The NEO 2016 WJ1 on 2016-12-01 from Siding Spring - Australia

See The NEO 2016 WJ1 Has Been Removed from the Sentry Risk Table--Neodys Risk Table List 3 Possible Impacts 2106-2115.

NOTE with only 12 days data-arc span there is "little" known about the NEO 2016 WJ1 and the information in this post may become outdated. So one should always check the links for updates. Whenever an object is posted to one the risk lists (especially if it has a Torino Scale 1 or greater) and it is observable, observers will take a particular interest in it. In the coming days it is possible there will be more follow-up observations and a search in archives for precovery observations. It is MOST likely this object will be removed from the risk lists. It could take observations over one or more orbital periods before we can reliably say where it will be from 2030 to 2108.

Background
(as of 2016-12-01 9:50am CST) 

• Object: 2016 WJ1 
• Approximate Diameter: 140 m - 310 m (459.318 feet to 1017.06 feet)(Absolute Magnitude: H= 21.402)
• Orbit Type: Apollo [NEO]- Potentially Hazardous Asteroid
• On the Sentry Risk Table: yes  NO
•  NOTE this is NOT a prediction of an impact but rather a statement there is insufficient observational data rule out an impact -- for information read  Understanding Risk Pages by Jon Giorgini
•  Torino Scale(JPL): 1 
• "A routine discovery in which a pass near the Earth is predicted that poses no unusual level of danger. Current calculations show the chance of collision is extremely unlikely with no cause for public attention or public concern. New telescopic observations very likely will lead to re-assignment to Level 0"
• On the NEODyS CLOMON2 risk page: yes
• Torino Scale(NEODyS CLOMON2): 1
• First observation was made: 2016 11 19.46522
• First observed by: Mt. Lemmon Survey (MPC Code G96) The Discovery M.P.E.C.: MPEC 2016-W38 : 2016 WJ1
• Last Observation(publish): 2016 12 01.48096 (by iTelescope Observatory  (MPC Code Q62)
• Data-Arc Span(publish) : 12 days
• Number of Optical Observations(published): 222
• Observatories Reporting (Published) Observations(MPC Code):
• (151) Eschenberg Observatory, Winterthur, Switzerland. 
• (203) GiaGa Observatory, Italy.  
• (246) Klet Observatory-KLENOT, Czech Republic.  
• (291) LPL/Spacewatch II,Arizona,US. 
• (691) Steward Observatory, Kitt Peak-Spacewatch, Arizona,US.
• (926) Tenagra II Observatory, Nogales,Arizona,US. 
• (958) Observatoire de Dax,France.
• (A17) Guidestar Observatory, Weinheim, Germany.
• (A48) Povegliano Veronese,Italy.
• (C47) Nonndorf, Austria.
• (E10) Siding Spring-Faulkes Telescope South, NSW,Australia.
• (F51) Pan-STARRS 1, Haleakala,Hawaii,US. 
• (G96) Mt. Lemmon Survey, Arizona,US.
• (H06) iTelescope Observatory, Mayhill,New Mexico,US.
• (H21) Astronomical Research Observatory, Westfield,Illinois,US.
• (H45) Arkansas Sky Obs., Petit Jean Mountain South,Arizona,US. 
• (I52) Steward Observatory, Mt. Lemmon Station, Arizona,US.
• (J04) ESA Optical Ground Station, Tenerife, Canary Islands, Spain.
• (J69) North Observatory, Clanfield, UK.
• (K38) M57 Observatory, Saltrio, Italy.
• (K61) Rokycany Observatory,Czech Republic.
• (K65) Cesena Italy.
• (K74) Muensterschwarzach Observatory, Schwarzach, Germany.
• (K88) GINOP-KHK, Piszkesteto,Hungary.
• (L04) ROASTERR-1 Observatory, Cluj-Napoca,Romania.
• (Q62) iTelescope Observatory, Siding Spring, NSW,Australia.   
• (T05) ATLAS-HKO, Haleakala,Hawaii,US.
• (T12) Mauna Kea-UH/Tholen NEO Follow-U, Hawaii,US.
• (W88) Slooh.com Chile Observatory, La Dehesa,Chile.
• (Y28) OASI, Brazil.
• (Z80) Northolt Branch Observatory, UK.
.
• Perihelion Distance: .6653138187201434 (AU)
• Aphelion Distance: 2.01493605513458 (AU)
• Earth MOID: 0.000339608 AU (0.132 (LD)) or 31,568.536 miles (50,804.634 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-December-16 at a Nominal Distance of  0.0538386015810167 (AU) (20.952 (LD)) or 5,004,610.672 miles (8,054,140.158 (KM))

A image of the NEO 2016 WJ1 on 2016-12-01
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of  3 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

A image of the NEO 2016 WJ1 on 2016-12-01
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of  3 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

A image of the NEO 2016 WJ1 on 2016-12-01
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of  3 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

A image of the NEO 2016 WJ1 on 2016-12-01
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of  3 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

 Useful Links: 

• Space Situational Awareness(ESA) -- 2016 WJ1
• Near Earth Objects Dynamic Site--2016 WJ1
• (MPC) Observations --2016 WJ1
• JPL Orbit Diagram --2016 WJ1
• NEO Earth Close Approaches (JPL) (up coming)
• JPL's NEO Earth Close-Approaches  (Between 1900 A.D. and 2200 A.D- limited to encounters with  reasonably low uncertainty)
• The Tracking News
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC)
• Don’t fear apocalyptic asteroids: you’re safer than you think
• Understanding Risk Pages By Jon Giorgini
• Revised asteroid scale aids understanding of impact risk
• Near Earth Objects Scale Helps Risk Communication
• Dealing With the Impact Hazard: An International Project
• The Palermo Technical Impact Hazard Scale
• An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
• International Asteroid Warning Network 
• Impact Risk Assessment: An Introduction - Near-Earth Object Program
• Hazardous NEO Technical Reviews
• Frequently Asked Questions For Impact Risk Assessment 
• How to Find an Impact Orbit for the Earth-Asteroid Collision
• The Asteroid/Comet Impact Hazard
• Whom should we call? Data policy for immediate impactors announcements
• NEO Search & Follow-Up
• NEOs' Science pages  by Livia Giacomini 
• 
  

The NEO 2016 WJ1 on 2016-11-25 from Siding Spring - Australia

See The NEO 2016 WJ1 Has Been Removed from the Sentry Risk Table--Neodys Risk Table List 3 Possible Impacts 2106-2115.

NOTE with only 6 days data-arc span there is "little" known about the NEO 2016 WJ1 and the information in this post may become outdated. So one should check the links for updates. Whenever an object is posted to one the risk lists (especially if it has a Torino Scale 1 or greater) and it is observable, observers will take a particular interest in it. In the coming days it is possible there will be more follow-up observations and a search in archives for precovery observations. It is likely this object will be removed from the risk lists.

Background
(as of 2016-11-25) 

• Object: 2016 WJ1 
• Approximate Diameter: 140  m - 320  m (459.318 feet to 1049.87 feet)(Absolute Magnitude: H= 21.338)
• Orbit Type: Apollo [NEO]- Potentially Hazardous Asteroid
• On the Sentry Risk Table: yes  NO
•  NOTE this is NOT a prediction of an impact but rather a statement there is insufficient observational data rule out an impact -- for information read  Understanding Risk Pages by Jon Giorgini
•  Torino Scale(JPL): 1 
• "A routine discovery in which a pass near the Earth is predicted that poses no unusual level of danger. Current calculations show the chance of collision is extremely unlikely with no cause for public attention or public concern. New telescopic observations very likely will lead to re-assignment to Level 0"
• On the NEODyS CLOMON2 risk page: yes
• Torino Scale(NEODyS CLOMON2): 1
• First observation was made: 2016 11 19.46522
• First observed by: Mt. Lemmon Survey (MPC Code G96) The Discovery M.P.E.C.: MPEC 2016-W38 : 2016 WJ1
• Last Observation(publish): 2016 11 25.183886 (by OASI, Nova ItacurubaI (MPC Code Y28)
• Data-Arc Span(publish) : 6 days
• Number of Optical Observations(published): 80
• Observatories Reporting (Published) Observations(MPC Code):
• (246) Klet Observatory-KLENOT,Czech Republic. 
• (291) LPL/Spacewatch II,Arizona,US. 
• (691) Steward Observatory, Kitt Peak-Spacewatch, Arizona,US.
• (926) Tenagra II Observatory, Nogales,Arizona, US. 
• (958) Observatoire de Dax, France.
• (G96) Mt. Lemmon Survey, Arizona,US. 
• (H06) iTelescope Observatory, Mayhill,New Mexico,US.
• (H21) Astronomical Research Observatory, Westfield, Illinois,US.
• (I52) Steward Observatory, Mt. Lemmon Station,Arizona,US.
• (K88) GINOP-KHK, Piszkesteto, Hungary.
• (L04) ROASTERR-1 Observatory, Cluj-Napoca, Romania.
• (Q62) iTelescope Observatory, Siding Spring,NSW,Australia. 
• (T12) Mauna Kea-UH/Tholen NEO Follow-U, Hawaii,US.
• (Y28) OASI, Nova Itacuruba, Brazil.
• Perihelion Distance: 0.6643788245227231 (AU)
• Aphelion Distance: 2.019174401968141 (AU)
• Earth MOID: 0.000357041 AU ( 0.139 (LD)) or 33,189.034 miles (53,412.573 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-December-16 at a Nominal Distance of  0.05398437711059 (AU) (21.009 (LD)) or 5,018,161.354 miles (8,075,947.866 (KM))

A image of the NEO 2016 WJ1 on 2016-11-25
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 5 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

A image of the NEO 2016 WJ1 on 2016-11-25
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 5 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

A image of the NEO 2016 WJ1 on 2016-11-25
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 5 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

Useful Links: 

• Space Situational Awareness(ESA) -- 2016 WJ1
• Near Earth Objects Dynamic Site--2016 WJ1
• (MPC) Observations --2016 WJ1
• JPL Orbit Diagram --2016 WJ1
• NEO Earth Close Approaches (JPL) (up coming)
• JPL's NEO Earth Close-Approaches  (Between 1900 A.D. and 2200 A.D- limited to encounters with  reasonably low uncertainty)
• The Tracking News
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC)
• Don’t fear apocalyptic asteroids: you’re safer than you think
• Understanding Risk Pages By Jon Giorgini
• Revised asteroid scale aids understanding of impact risk
• Near Earth Objects Scale Helps Risk Communication
• Dealing With the Impact Hazard: An International Project
• The Palermo Technical Impact Hazard Scale
• An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
• International Asteroid Warning Network 
• Impact Risk Assessment: An Introduction - Near-Earth Object Program
• Hazardous NEO Technical Reviews
• Frequently Asked Questions For Impact Risk Assessment 
• How to Find an Impact Orbit for the Earth-Asteroid Collision
• The Asteroid/Comet Impact Hazard
• Whom should we call? Data policy for immediate impactors announcements

The NEO 2016 WJ1 on 2016-11-24 from Siding Spring - Australia

See The NEO 2016 WJ1 Has Been Removed from the Sentry Risk Table--Neodys Risk Table List 3 Possible Impacts 2106-2115.

NOTE with only 4 days data-arc span there is "little" known about the NEO 2016 WJ1 and the information in this post may become outdated. So one should check the links for updates. Whenever an object is posted to one the risk lists (especially if it has a Torino Scale 1 or greater) and it is observable, observers will take a particular interest in it. In the coming days it is possible there will be more follow-up observations and a search in archives for precovery observations. It is likely this object will be removed from the risk lists.

Background
(as of 2016-11-24) 

• Object: 2016 WJ1 
• Approximate Diameter: 140  m - 320  m (459.318 feet to 1049.87 feet)(Absolute Magnitude: H= 21.328)
• Orbit Type: Apollo [NEO]- Potentially Hazardous Asteroid
• On the Sentry Risk Table: yes NO 
•  NOTE this is NOT a prediction of an impact but rather a statement there is insufficient observational data rule out an impact -- for information read  Understanding Risk Pages by Jon Giorgini
•  Torino Scale(JPL): 1 
• "A routine discovery in which a pass near the Earth is predicted that poses no unusual level of danger. Current calculations show the chance of collision is extremely unlikely with no cause for public attention or public concern. New telescopic observations very likely will lead to re-assignment to Level 0"
• On the NEODyS CLOMON2 risk page: yes
• Torino Scale(NEODyS CLOMON2): 1
• First observation was made: 2016 11 19.46522
• First observed by: Mt. Lemmon Survey (MPC Code G96) The Discovery M.P.E.C.: MPEC 2016-W38 : 2016 WJ1
• Last Observation(publish): 2016 11 24.49274 (by LPL/Spacewatch II (MPC Code 291)
• Data-Arc Span(publish) : 5 days
• Number of Optical Observations(published): 68
  
• Perihelion Distance: 0.6646977875617796 (AU)
• Aphelion Distance: 2.016698875781032 (AU)
• Earth MOID: 0.000378886 AU ( 0.147 (LD)) or 35,219.654 miles (56,680.539 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-December-16 at a Nominal Distance of  0.0539141743012569 (AU) (20.982 (LD)) or 5,011,635.595 miles (8,065,445.676 (KM))

A image of the NEO 2016 WJ1 on 2016-11-24
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 5 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

  

A image of the NEO 2016 WJ1 on 2016-11-24
from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 5 - 60 second luminance BIN2 images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD)
(C) Steven M. Tilley

Useful Links:

• Space Situational Awareness(ESA) -- 2016 WJ1
• Near Earth Objects Dynamic Site--2016 WJ1
• (MPC) Observations --2016 WJ1
• JPL Orbit Diagram --2016 WJ1
• NEO Earth Close Approaches (JPL) (up coming)
• JPL's NEO Earth Close-Approaches  (Between 1900 A.D. and 2200 A.D- limited to encounters with  reasonably low uncertainty)
• The Tracking News
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC)
• Don’t fear apocalyptic asteroids: you’re safer than you think
• Understanding Risk Pages By Jon Giorgini
• Revised asteroid scale aids understanding of impact risk
• Near Earth Objects Scale Helps Risk Communication
• Dealing With the Impact Hazard: An International Project
• The Palermo Technical Impact Hazard Scale
• An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
• International Asteroid Warning Network 
• Impact Risk Assessment: An Introduction - Near-Earth Object Program
• Hazardous NEO Technical Reviews
• Frequently Asked Questions For Impact Risk Assessment 
• How to Find an Impact Orbit for the Earth-Asteroid Collision
• The Asteroid/Comet Impact Hazard
• Whom should we call? Data policy for immediate impactors announcements

The NEO 2016 WG on 2016-11-23

Background
(as of 2016-11-23) 

• Object: 2016 WG
• Approximate Diameter: 59 m - 130 m (193.57 feet to 426.509 feet)(Absolute Magnitude: H= 23.258)
• Orbit Type: Apollo [NEO]
• On the Sentry Risk Table: yes   NOTE this is NOT a prediction of an impact but rather a statement there is insufficient observational data rule out an impact -- for information read  Understanding Risk Pages by Jon Giorgini
• On the NEODyS CLOMON2 risk page: yes
• First observation was made: 2016 11 18.43559
• First observed by: Mt. Lemmon Survey (MPC Code G96) The Discovery M.P.E.C.: MPEC 2016-W21 : 2016 WG
• Last Observation(publish): 2016 11 23.33429 (by LPL/Spacewatch II (MPC Code 291)
• Data-Arc Span(publish) : 5 days
• Number of Optical Observations(published): 101
• Perihelion Distance: 0.4718660174472272(AU)
• Aphelion Distance: 3.176881868525502 (AU)
• Earth MOID:  0.00171104 AU ( 0.666 (LD)) or 159,051.104 miles (255,967.941 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-November-25 at a Nominal Distance of 0.0107875037239381 (AU) (4.198 (LD)) or 1,002,761.117 miles (1,613,787.587 (KM))

The NEO 2016 WG on 2016-11-23 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 4- 15 Second Luminance BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WG on 2016-11-23 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 4- 15 Second Luminance BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WG on 2016-11-23 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 4- 15 Second Luminance BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

Useful Links:

• Space Situational Awareness(ESA) -- 2016 WG
• Near Earth Objects Dynamic Site--2016 WG
• (MPC) Observations --2016 WG
• JPL Orbit Diagram --2016 WG
• NEO Earth Close Approaches (JPL) (up coming)
• JPL's NEO Earth Close-Approaches  (Between 1900 A.D. and 2200 A.D- limited to encounters with  reasonably low uncertainty)
• The Tracking News
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC)
• Don’t fear apocalyptic asteroids: you’re safer than you think
• Understanding Risk Pages By Jon Giorgini
• Revised asteroid scale aids understanding of impact risk
• Near Earth Objects Scale Helps Risk Communication
• Dealing With the Impact Hazard: An International Project
• The Palermo Technical Impact Hazard Scale
• An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
• International Asteroid Warning Network

Information on the Asteroid (35396) 1997 XF11

The Near Earth Object (35396) 1997 XF11 is notable( or notorious) for the fact it became the center of a media firestorm on 11 March 1998 when an IAU Circular and press information sheet incorrectly stated the possibility of it impacting the Earth in 2028. Within a day new calculations where done showing the probability of Earth impact to be essentially zero. However this was after the news media reported the story and old(or incorrect) news stories have away living for long time(this can be a good thing if research is done right). This is why one should aways look for updates when doing any research. Recently this story has made a comeback in blogosphere. To show that (35396) 1997 XF11 is NOT "Being Hidden From the World" I obtain the publicly available orbit and imaged it from AstroCamp Observatory. Nerpio, Spain (MPC Code I89)...and I fond where it should be. Here is the images, background information, and links on (35396) 1997 XF11.

The Near Earth Objects (35396) 1997 XF11 on 2016-11-01 from AstroCamp Observatory. Nerpio, Spain - (MPC Code I89) using itelescope.net's (T7 TEL 0.43-m f/6.8 reflector + CCD) a stack of 4 - 60 Second Luminance BIN2 Images
(C) Steven M. Tilley

The Near Earth Objects (35396) 1997 XF11 on 2016-11-01 from AstroCamp Observatory. Nerpio, Spain - (MPC Code I89)
using itelescope.net's (T7 TEL 0.43-m f/6.8 reflector + CCD) a stack of 4 - 60 Second Luminance BIN2 Images
(C) Steven M. Tilley

Background 

(as of 2016-11-07)

• Object: (35396) 1997 XF11
• Approximate Diameter: 1.3 km - 2.8 km ( 0.807783 miles to 1.739839  km )(Absolute Magnitude: H=16.9)
• Orbit Type: Apollo [NEO] Potentially Hazardous Asteroid
• On the Sentry Risk Table: No
• On the NEODyS CLOMON2 risk page: No
• First(Precovery) Observation was Made: 1990 03 22.44427
• First(Precovery) Observed By: Palomar Mountain (MPC Code 675)
• Discovery Observation was Made: 1997 12 06.47227
• Discovery Observation was Made By: Steward Observatory, Kitt Peak-Spacewatch (MPC Code 691) The Discovery M.P.E.C.: MPEC 1997-Y11 : 1997 XF11
• Last Observation(publish): 2016 11 04.83358  (by Purple Mountain Observatory, XuYi Station, China (MPC Code D29))
• Data-Arc Span(publish) : 9724 days (26.62 yr)
• Number of Optical Observations(published): 1595
• Radar observations: 6
• Observatories Reporting (Published) Observations(MPC Code):
• (006) Fabra Observatory, Barcelona, Spain.
• (046) Klet Observatory, Ceske Budejovice, Czech Republic.
• (057) Belgrade, Serbia.
• (073) Bucharest, Romania.
• (084) Pulkovo, Russia
• (104) San Marcello Pistoiese, Italy.
• (106) Crni Vrh, Slovenia
• (118) Astronomical and Geophysical Observatory, Modra, Slovakia.
• (127) Bornheim, Germany
• (130) Lumezzane, Italy.
• (151) Eschenberg Observatory, Winterthur, Switzerland.
• (160) Castelmartini,Italy.
• (168) Kourovskaya, Russia.
• (176) Observatorio Astronomico de Consell, Spain.
• (185) Observatoire Astronomique Jurassien-Vicques, Switzerland.
• (204) Schiaparelli Observatory,Italy
• (213) Observatorio Montcabre, Spain
• (251) Arecibo, Puerto Rico,US
• (253) Goldstone DSS 14, Fort Irwin, California, US
• (291) LPL/Spacewatch II, Arizona,US
• (333) Desert Eagle Observatory,Arizona, US
• (360) Kuma Kogen, Japan
• (379) Hamamatsu-Yuto, Japan
• (402) Dynic Astronomical Observatory,Japan
• (413) Siding Spring Observatory,NSW, Australia
• (422) Loomberah, NSW, Australia
• (428) Reedy Creek,QLD,Australia.
• (474) Mount John Observatory, Lake Tekapo, New Zealand.
• (557) Ondrejov, Czech Republic
• (568) Mauna Kea, Hawaii, US
• (587) Sormano, Italy
• (608) Haleakala-AMOS, Hawaii, US
• (644) Palomar Mountain/NEAT, Arizona, US
• (658) National Research Council of Canada, Brit, Columbia, Canada
• (670) Camarillo,Arizona,US
• (675) Palomar Mountain, Arizona,US
• (691) Steward Observatory, Kitt Peak-Spacewatch, Arizona, US
• (696) Whipple Observatory, Mt. Hopkins, Arizona, US
• (699) Lowell Observatory-LONEOS, Arizona,US
• (703) Catalina Sky Survey, Arizona,US
• (704) Lincoln Laboratory ETS, New Mexico, US
• (705) Apache Point,New Mexico, US
• (711) McDonald Observatory, Fort Davis,Texas,US.
• (807) Cerro Tololo Observatory, La Serena, Chile.
• (809) European Southern Observatory, La Silla, Chile.
• (897) YGCO Chiyoda Station, Japan.
• (900) Moriyama, Japan.
• (921) SW Institute for Space Research, Cloudcroft  New Mexico,US
• (932) John J. McCarthy Obs., New Milford, Connecticut,US
• (938) Linhaceira,Portugal.
• (940) Waterlooville, UK.
• (941) Observatorio Pla D'Arguines, Spain.
• (952) Marxuquera, Spain.
• (954) Teide Observatory,Canary Islands (Spain).
• (A30) Crespadoro,Italy.
• (B67) Sternwarte Mirasteilas, Falera, Switzerland.
• (C00) Velikie Luki, Russian.
• (C20) Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs., Russia.
• (C51) WISE.
• (D25) Tzec Maun Observatory, Pingell (before 2010),WA, Australia.
• (D29) Purple Mountain Observatory, XuYi Station, China.
• (E12) Siding Spring Survey, NSW, Australia
• (F51) Pan-STARRS 1, Haleakala, Hawaii, US
• (G34) Oberfrauendorf, Germany.
• (G36) Calar Alto-CASADO, Spain.
• (G45) Space Surveillance Telescope, Atom Site, New Mexico, US
• (G92) Jarnac Observatory, Vail, Arizona,US
• (G96) Mt. Lemmon Survey, Arizona, US
• (H21) Astronomical Research Observatory, Westfield, Illinois, US
• (H23) Pear Tree Observatory, Valparaiso , Florida, US
• (H45) Arkansas Sky Obs., Petit Jean Mountain South, Arkansas, US
• (H79) York University Observatory, Toronto, Canada/Ontario.
• (I20) Observatorio Astronomico Salvador, Rio Cuarto, Argentina.
• (J16) An Carraig Observatory, Loughinisland, UK.
• (J19) El Maestrat, Spain.
• (J75) OAM Observatory, La Sagra, Spain.
• (J93) Mount Tuffley Observatory, Gloucester, UK.
• (J94) Abbeydale, UK.
• (K38) M57 Observatory, Saltrio, Italy.
• (K63) G. Pascoli Observatory, Castelvecchio Pascoli, Italy.
• (Q62) iTelescope Observatory, Siding Spring, NSW, Australia.
• (T05) ATLAS-HKO, Haleakala, Hawaii, US
• (V78) Spirit Marsh Observatory. Sauk Centre, Minnesota, US
• (V83) Rolling Hills Observatory, Warrensburg, Missouri, US
• (W19) Kalamazoo, Michigan, US
• (Y00) SONEAR Observatory, Oliveira (S20.71513 W44.78496) Brazil.
• Perihelion Distance: 0.7445669829462876 (AU)
• Aphelion Distance: 2.141039135154752 (AU)
• Earth MOID:  0.000392071 AU ( 0.153 (LD)) or 36,445.276 miles (58,652.987 (KM))
• Last Close-Approach to Earth: Passed the Earth on 2016-June-10 at a Nominal Distance of  0.179984750131334 (AU), (70.045 Lunar Distance (LD)), 16,730,627.744 or miles (26,925,335.376 (KM))
•  Close-Approach to Venus: Will pass Venus on 2021-September-17 at Nominal Distance of  0.0932504234507136 (AU) (36.29  (LD)) or 8,668,168.39 miles (13,950,064.789 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2021-November-18 at Nominal Distance of  0.443542182988942 (AU) (172.614 (LD)) or 41,229,821.677 miles (66,352,966.137 (KM))
• Close-Approach to Earth: Will safely pass Earth on  2023-May-05 at Nominal Distance of  0.241774173444771 (AU) (94.092 (LD)) or  miles 22,474,313.469 ( 36,168,901.535 (KM))
• Close-Approach to Earth: Will safely pass Earth on  2028-October-26 at Nominal Distance of 0.00621153684077898 (AU) (2.417 (LD)) or 577,398.421  miles  (929,232.685 (KM))
• Close-Approach to The Moon: Will safely pass Moon on 2028-October-26 at Nominal Distance of  0.00886650062640578 (AU)(3.451 (LD)) or 824,192.723 miles  (1,326,409.614(KM))
• Useful Links:
• Space Situational Awareness(ESA) -- (35396) 1997 XF11
• Near Earth Objects Dynamic Site--(35396) 1997 XF11
• (MPC) Observations --(35396) 1997 XF11
• JPL Orbit Diagram --(35396) 1997 XF11
• NEO Earth Close Approaches (JPL) (up coming)
• JPL's NEO Earth Close-Approaches  (Between 1900 A.D. and 2200 A.D- limited to encounters with  reasonably low uncertainty)
• The Tracking News
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC)
• Don’t fear apocalyptic asteroids: you’re safer than you think
• Understanding Risk Pages By Jon Giorgini
• Revised asteroid scale aids understanding of impact risk
• Near Earth Objects Scale Helps Risk Communication
• Dealing With the Impact Hazard: An International Project
• The Palermo Technical Impact Hazard Scale
• An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
• Asteroid 1997 XF11 from the WIYN
• One-Mile-Wide Asteroid to Pass Close to the Earth in 2028  (1998 March 11, updated  1998 March 12)
• Asteroid Is Expected to Make A Pass Close to Earth in 2028 (New York Times, March 12, 1998)
• Asteroid Will Miss Earth By "Comfortable Distance" In 2028 (JPL's press release.)
• IAU Statement prepared by Dr. David Morrison, 14 March 1998 (Internet Archive)
• How the Asteroid Story Hit: An Astronomer Reveals How a Discovery Spun Out of Control 
• Prediscovery Ephemerides for 1997 XF11
• IAUC 6837: 1997 XF11; C/1997 W2, C/1998 E1
• IAUC 6839: 1997 XF11 - Central Bureau for Astronomical Telegrams
• IAUC 6879: P/1998 G1; C/1998 G2; 1997 XF11
• Asteroid 1997 XF11 - Near-Earth Object Program - NASA
• Spacewatch discovery of 1997 XF11
• 1997 XF11 – the true story 
• The Asteroid/Comet Impact Hazard
• Whom should we call? Data policy for immediate impactors announcements
• Rotation period and spin direction of near-Earth asteroid (35396) 1997 XF11
• Motion of the Dangerous Asteroid 1997 XF₁₁
• How to Find an Impact Orbit for the Earth-Asteroid Collision
• (35396) 1997 XF11 (Wikipedia)
• NASA: There is No Asteroid Threatening Earth
• Impact Risk Assessment: An Introduction - Near-Earth Object Program
• Hazardous NEO Technical Reviews
• Frequently Asked Questions For Impact Risk Assessment 
• 1997XF11 Ephemerides for 26 Oct 2028--NEODyS (Near Earth Objects - Dynamic Site
   

Confirmation Images of the Asteroid 2016 VC1

 Background

(as of 2016-11-06)

•  Object:  2016 VC1
• Approximate Diameter:  130 m - 290 m  ( 426.509 feet to  951.444  feet)(Absolute Magnitude:  H= 21.576 )
• Orbit Type: Apollo [NEO]  Potentially Hazardous Asteroid
• On the Sentry Risk Table:  NO
• On the NEODyS CLOMON2 risk page: No 
• First Observation was made: 2016 11 02.59825
• First Observed  By: Purple Mountain Observatory, XuYi Station, China (MPC Code D29)  The Discovery M.P.E.C.: MPEC 2016-V47 : 2016 VC1
• Last Observation was made(publish): 2016 11 06.85421  (by Bernezzo Observatory (MPC Code C77))
• Data-Arc Span(publish) : 4 days
• Number of Observations(published): 69
• Perihelion Distance:  0.7144718474842521(AU)
• Aphelion Distance: 3.872523314277046 (AU)
• Earth MOID:  0.0356285 AU ( 13.866 (LD)) or  3,311,875.979  miles (5,329,947.736 (KM))
• Next Close-Approach to Earth: Will safely pass Earth on 2016-Nov-22 at Nominal Distance of 0.0451994363061197  (AU) ( 17.59 (LD)) or  4,201,550.09  miles (6,761,739.428  (KM))

 



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-04 from Auberry California USA - (MPC Code U69)
a stack of 5 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-04 from Auberry California USA - (MPC Code U69)
a stack of 5 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-04 from Auberry California USA - (MPC Code U69)
a stack of 5 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-04 from Auberry California USA - (MPC Code U69)
a stack of 5 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-05 from Auberry California USA - (MPC Code U69)
a stack of 9 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-05 from Auberry California USA - (MPC Code U69)
a stack of 9 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley



A confirmation image of the Near Earth Object 2016 VC1
on 2016-11-05 from Auberry California USA - (MPC Code U69)
a stack of 9 - 60 Second Luminance BIN2 Images using
itelescope.net's (t24 TEL 0.61-m f/6.5 reflector + CCD)
(C) Steven M. Tilley


Other links:

• Near Earth Objects Dynamic Site--2016 VC1
• (MPC) Observations 2016 VC1 
• JPL Orbit Diagram 2016 VC1 
• NEO Earth Close Approaches (JPL)
• The Tracking News 
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC) 
• Understanding Risk Pages By Jon Giorgini
•  An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
•  Don’t fear apocalyptic asteroids: you’re safer than you think 

 

A Confirmation Image of The NEO 2016 UE On 2016-10-20

A confirmation image of the Near-Earth Object 2016 UE
on 2016-10-20 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
 a stack of 4 - 60 Second Luminance BIN2 Images taken with iTelescope.net's
(TEL T27 0.70-m f/6.6 reflector + CCD) (C) Steven M. Tilley



See:

• MPEC 2016-U25 : 2016 UE
• JPL Orbit Diagram 2016 UE 

The Asteroid 2009 ES Past Safely then Someone Said Something and The Internet Goes Crazy

 Background

(as of 2016-10-10)

•  Object:  2009 ES 
• Approximate Diameter: 210  m - 470 m (688.976  feet to 1541.99 feet)(Absolute Magnitude:  H= 20.5 ) --(NOT 10 km)
• Orbit Type: Apollo [NEO]  Potentially Hazardous Asteroid
• On the Sentry Risk Table:  No  Removed on  2009-03-18 10:56  
• On the NEODyS CLOMON2 risk page: No  Removed see The Tracking News(Wednesday, 18 March 2009) 
• First Observed was made on: 2009 03 02.21182
• First Observed  By: Mt. Lemmon Survey, Arizona, USA (MPC Code G96) The Discovery M.P.E.C.: MPEC 2009-E19 : 2009 ES see The Tracking News(Tuesday, 3 March 2009) 
• Last Observed(publish):2016 10 06.09155 (by Arkansas Sky Obs., Petit Jean Mountain South (MPC Code H45))
• Data-Arc Span(publish) : 2775 days (7.60 yr)
• Number of Observations(published): 166
• Observatories Reporting Observations(published):
• Arkansas Sky Obs., Petit Jean Mountain South, Arkansas, USA
• Castelmartini, Italy.
• Cerro Tololo Observatory, La Serena, Chile. 
• Eschenberg Observatory, Winterthur, Switzerland.
• Fabra Observatory, Barcelona, Spain.
• Kitt Peak, Arizona, USA
• Klet Observatory-KLENOT, Czech Republic.
• Kyiv comet station, Ukraine.
• LPL/Spacewatch II, Arizona, USA
• Mount John Observatory, Lake Tekapo, New Zealand.
• Mt. Lemmon Survey, Arizona, USA
• Magdalena Ridge Observatory, Socorro  New Mexico, US
• Observatorio Tesla, Valdemorillo, Spain.
• Pan-STARRS 1, Haleakala,  Hawaii, USA
• SONEAR Observatory, Oliveira, Brazil.
• Schiaparelli Observatory, Italy.
• Sternwarte Mirasteilas, Falera, Switzerland.
• Perihelion Distance: 0.9619118307549718(AU)
• Aphelion Distance: 1.907532258830227(AU)
• Earth MOID:  0.0390574 AU (15.2 (LD)) or 3,630,612.147 miles (5,842,903.875(KM))
• Last Close-Approach to Earth:  Passed the Earth on 2016-Sep-05 at a Nominal Distance of 0.0483771077875026 (AU), (18.827 Lunar Distance (LD)), or 4,496,933.108 miles (7,237,112.315 (KM))
• Next Close-Approach to Mars: Will pass Mars on 2017-Oct-18 at Nominal Distance of 0.00457422070311273 (AU) (1.78(LD)) or 425,200.378 miles (684,293.677(KM))
• Next Close-Approach to Earth: Will safely pass Earth on 2028-Sep-18 at Nominal Distance of 0.323012120161073 (AU) (125.707(LD)) or 30,025,852.387 miles (48,321,925.383 (KM))

The NEO 2009 ES on 2016-09-20 (Astrometrica) a stack of 4 - 60 Second Luminance BIN2 Images taken with iTelescope.net's (TEL T11 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer) at (MPC Code H06) Mayhill, New Mexico (New Mexico Skies) By Steven M. Tilley

Tweets(Before Purple Mountain Observatory's Report)

Asteroid Earth Impact - 5-Day Forecast:

ALL CLEAR!

With Occasional Earth Flybys pic.twitter.com/Csz50RHsKY

— Ron Baalke (@RonBaalke) September 3, 2016

A large ~350-meter asteroid, 2009 ES, passes safely by the Earth today (19 Lunar Distance) pic.twitter.com/KPhIpnCFWN

— Ron Baalke (@RonBaalke) September 5, 2016

Asteroid 2009 ES flyby in ~ 30 mins (Sep 5 at 19:24 UT). Dist: 18.83 LD. Size: 150-470 m. https://t.co/Ox8KTKqbmm

— Minor Planet Center (@MinorPlanetCtr) September 5, 2016

asteroid (2009 ES) missed earth by 19 lunar distances: diameter ~340 m, velocity 18.06 km/s, energy ~2 gigatons. https://t.co/tGkAZRSqPP

— Asteroids and Comets (@AsteroidMisses) September 5, 2016

Note before Purple Mountain Observatory's Report 2009 ES just a NEO with well know orbit. Any danger into the foreseeable future from 2009 ES was ruled out on 2009-03-18 10:56(UTC).

Purple Mountain Observatory's Report

No panic! China telescope captures images of Earth-approaching asteroid for 1st time https://t.co/atY8QJ4rWB pic.twitter.com/wWzEcAPnkY

— China Xinhua News (@XHNews) September 8, 2016

Telescope at Purple Mountain Observatory in Nanjing captured images of #asteroid 2009ES approaching Earth. #Jiangsu pic.twitter.com/FixXW16B9C

— Jiangsu China (@loveJiangsu) September 9, 2016

 

Then as this story moved through the blogosphere, it changed like the "telephone game." The report was misread, poorly translated, misunderstood, etc. then rewritten by other writers with the wrong information.  Then other writers then use the revised stories as sources for new stories adding to the madness. One should seek out the original story(and see if it is reliable), and check for reliable information from some of the reliable sources such as the Minor Planet Center, NASA NEO Program Office at JPL, ESA's NEODyS (Near Earth Objects Dynamic Site), or The Tracking News.  I am not posting links to the crazy stories, Just Google Asteroid  2009 ES  and see for yourself.

 

Other links:

• Space Situational Awareness(ESA)  2009 ES
• Near Earth Objects Dynamic Site--2009 ES
• (MPC) Observations 2009 ES 
• JPL Orbit Diagram 2009 ES 
• NEO Earth Close Approaches (JPL)
• MPC Asteroid Data Explorer(Asteroid: 2009 ES)
• The Tracking News 
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC) 
• Understanding Risk Pages By Jon Giorgini
•  An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
•  Don’t fear apocalyptic asteroids: you’re safer than you think 

Correction: (as of 2016-10-25) was corrected to say (as of 2016-10-10) the date of the post