The NEO 2016 WJ1 on 2016-11-28 from Mayhill, New Mexico

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only 8 days data-arc span there is "little" known about the NEO 2016 WJ1 and the information in this post may become outdated.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 2016-11-27) 

• Object: 2016 WJ1 
• Approximate Diameter: 140  m - 320  m (459.318 feet to 1049.87 feet)(Absolute Magnitude: H= 21.345)
• 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 27.09769 (by Cesena, Italy  (MPC Code K65)
• Data-Arc Span(publish) : 8 days
• Number of Optical Observations(published): 108
• 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. 
• (J04) ESA Optical Ground Station, Tenerife, Canary Islands (Spain).
• (J69) North Observatory, Clanfield, UK.
• (K38) M57 Observatory, Saltrio, Italy.
• (K65) Cesena, Italy.
• (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.
• (Z80) Northolt Branch Observatory,UK.
• Perihelion Distance: 0.6643867240093884  (AU)
• Aphelion Distance: 2.019109835427547 (AU)
• Earth MOID: 0.00035665 AU (0.139 (LD)) or 33,152.689 miles (53,354.081 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-December-16 at a Nominal Distance of  0.0539800537140701 (AU) (21.007 (LD)) or 5,017,759.469 miles (8,075,301.095 (KM))

The NEO 2016 WJ1 on 2016-11-28 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 5- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-28 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 5- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-28 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 5- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-28 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 5- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-28 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 45- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(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 2016-11-25 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 WJ1 on 2016-11-24

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

Background
(as of 2016-11-23) 

• Object: 2016 WJ1 
• Approximate Diameter: 150 m - 330 m (492.126 feet to 1082.68 feet)(Absolute Magnitude: H= 21.303)
• 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
• On the NEODyS CLOMON2 risk page: yes
• 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 23.32687 (byTenagra II Observatory, Nogales (MPC Code 926)
• Data-Arc Span(publish) : 4 days
• Number of Optical Observations(published): 56
  
• Perihelion Distance: 0.6659416098880451  (AU)
• Aphelion Distance: 2.008089275410093 (AU)
• Earth MOID: 0.000375787 AU (0.146 (LD)) or 34,931.584 miles (56,216.935 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-December-16 at a Nominal Distance of  0.053816832705857 (AU) ( 20.944 (LD)) or 5,002,587.129 miles (8,050,883.58 (KM))

The NEO 2016 WJ1 on 2016-11-24 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 10- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-24 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 10- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-24 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 10- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(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

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

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

Confirmation of the Near-Earth Object 2016 TJ17

Confirmation image of the Near-Earth Object 2016 TJ17 (absolute magnitude =25.4 ~28m) 
on 2016-10-08 a stack of 9-60 second luminance BIN2 taken 
with iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD) 
at Observatory: Siding Spring - Australia (MPC code Q62)
By Steven M. Tilley

 

 Background

(as of 2016-10-09)

•  Object:  2016 TJ17
• Approximate Diameter: 22 m - 160.761 m(72.1785 feet to 1541.99 feet)( Absolute Magnitude:  H= 25.409 )
• Orbit Type: Apollo [NEO]
• On the Sentry Risk Table:  No  (Never has been listed )
• On the NEODyS CLOMON2 risk page: No 
• First Observed was made on: 2016 10 06.27431
• First Observed  By: Catalina Sky Survey, Arizona,USA (MPC Code 703) The Discovery M.P.E.C.: MPEC 2016-T82 : 2016 TJ17 see The Tracking News(Saturday, 8 October 2016) 
• Last Observed(publish):2016 10 09.26048
• Data-Arc Span(publish) : 3 days
  
•  Number of Observations(publish): 58
• Perihelion Distance:  0.7816366260606531
• Aphelion Distance: 3.537812747373569
• Earth MOID:   0.00117955(0.459 (LD)) 109,646.022 or miles (176,458.168 (KM))
• Last Close-Approach to Earth:  Passed the Earth on  at a Nominal Distance of 0.0031372716407202  (AU), (1.221Lunar Distance (LD)), or 291,627.618 miles ( 469,329.157(KM))

    Other links:

• Space Situational Awareness(ESA)  2016 TJ17
• Near Earth Objects Dynamic Site--2016 TJ17
• (MPC) Observations 2016 TJ17 
• JPL Orbit Diagram 2009 ES 
• 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 
• The NEO Confirmation Page(MPC) 
•  Practical guide on how to observe NEOCP object  by Birtwhistle et al.

Asteroid 2009 ES Fact Sheet

 Background

(as of 2016-09-25)

 

•  Object:  2009 ES 
• Approximate Diameter: 210  m - 470 m (688.976  feet to 1541.99 feet)( Absolute Magnitude:  H= 20.5 )
• 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 09 24.18217 (by Arkansas Sky Obs., Petit Jean Mountain South (MPC Code H45))
• Data-Arc Span(publish) : 2763 days (7.56 yr)
  
•  Number of Observations(publish): 138
• Perihelion Distance: 0.9619118486089225(AU)
• Aphelion Distance: 1.907532243973262(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 0.0483771389748092 (AU), (18.827 Lunar Distance (LD)), or 4,496,936.007 miles (7,237,116.981 (KM))
• Next Close-Approach to Mars: Will pass Mars on 2017-Oct-18 at Nominal Distance of 0.00457425454370645 (AU) (1.78(LD)) or 425,203.524 miles (684,298.74 (KM))
• Next Close-Approach to Earth: Will safely pass Earth on 2028-Sep-18 at Nominal Distance of 0.323011688169902 (AU) (125.707(LD)) or 30,025,812.231 miles (48,321,860.759 (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

 Other links:

• 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

An Asteroid as Entered the Blogosphere… Should I Be Worried?

A commentary by Steven M. Tilley



The Asteroid to Earth "Say out my Way!!!!"
Earth to the Asteroid "Watch where you're going ... fool!!!"
 Image edited by Steven M. Tilley
(Disclaimer --  Earth and
asteroids CAN NOT talk)
 see the original (public domain) image
Planetoid crashing into primordial Earth  at
 Donald Davis' official site

About every few month or so an asteroid makes waves online.  This lead some people to panic. Before anyone panics and does something dumb. One should remember one of the secrets to life, breathe, in and out. Then remember anyone can post anything online. Some sources are better than others when it comes to asteroid information. Sources range from very useful to worse than useless.

First 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.  The writer of this blog post is aware that are many people in the blogosphere who distrusts one or more of the name reliable sources.  The author suggests that they reexamine their stand. A significant number of individuals and organizations from around the world observe asteroids; these observations serve as a cross check. If someone or a group makes an error, the error would soon come to light with more observations. If there is nothing about the asteroid  from the name from reliable sources most likely, the story probably is wrong. 

Another thing to remember as a story moves through the blogosphere it changes like the "telephone game." The original story is misread, poorly translated, misunderstood, etc. then rewritten by other writers with the wrong information.  Then other writers then use the revised story as a source for new stories adding to the madness. One should seek out the original story(and see if it is reliable).

When reading up ( and writing) about asteroids one should know the limits of one's knowledge base.  Some of bloggers and youtbers out there go way outside of their knowledge base; they think they "know" when they don't  "know."  The problem is many people mistakenly repost "wrong" blog posts(and videos) adding to the madness. Just because something has been shared, many times does not make it true.

It should be stated that no post is complete without a "good" headline and an image to hook readers. Many times the picture is wrong, and the headline is highly misleading.  It takes lots of time to find a picture of the asteroid or use a telescope to image the asteroid in question.  This requirement of time will lead many writers to find any old image of any old asteroid. Many times if the author used a real picture of the asteroid internet users would not click.

Finally one should keep studying about asteroid there so much to know. One should not be afraid seeking good answers to questions. Just look for good sources of information.