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Showing posts with label (TEL 21). Show all posts
Showing posts with label (TEL 21). Show all posts

Nov 24, 2016

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:

Nov 23, 2016

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:

Jan 16, 2016

Comet C/2013 X1 (PANSTARRS) On 2016-01-15

Comet C/2013 X1 (PANSTARRS) On 2016-01-15 

 Background
(as of 2016-01-15)
The Comet C/2013 X1(PANSTARRS) on 2016-01-15 from
Mayhill, New Mexico (New Mexico Skies) - (MPC Code H06) on 2016-01-15
a stack of 27-60 seconds Luminance BIN2
images taken with itelescope.net's
(TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)

Astrometrica object verification window a 60 second Luminance BIN2 image(1 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)


Astrometrica object verification window a 60 second Luminance BIN2 image(9 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)

Astrometrica object verification window a 60 second Luminance BIN2 image(18 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)

Astrometrica object verification window a 60 second Luminance BIN2 image(27 of 27) taken with itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer) fromMayhill, New Mexico (New Mexico Skies) - (MPC Code H06)

Other links:

Jan 11, 2016

The NEO 2015 YC2 on 2016-01-10



 Background
(as of 2016-01-11)
  •  Object: 2015 YC2
  • Approximate Diameter: 56 m - 120 m (183.727 feet to 393.701 feet) ( Absolute Magnitude:  H= 23.4 )
  •  Orbit Type:  Apollo 
  •  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 infomation read  Understanding Risk Pages by Jon Giorgini
  • On the NEODyS CLOMON2 risk page: Yes
  • First Observed  on: 2015 12 19.27013
  • First Observed  By: Mt. Lemmon Survey (MPC Code G96) ,  (The Discovery M.P.E.C.: MPEC 2015-Y67 : 2015 YC2)
  •  Last Observed: 2016 01 11.36839
  •  Data-Arc Span: 23 day
  •  Number Oppositions : 1
  •  Number of Observations Made:  90
  • Next Close-Approach:  Will safely pass Earth on  2016-Jan-15 at  Nominal Distance of 0.0126600709130298 AU (4.93 (LD)) or1,176,827.112  miles or (1,893,919.651 KM)
(1 of 3) Stacks of 8 - 15 Second Luminance BIN2 images taken with  itelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
(2 of 3) Stacks of 8 - 15 Second Luminance BIN2 images taken with  itelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
(3 of 3) Stacks of 8 - 15 Second Luminance BIN2 images taken with  itelescope.net's (TEL T11 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer)

(1 of 3) Stacks of 15 - 15 Second Luminance BIN2 images taken with Using itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)

(2 of 3) Stacks of 15 - 15 Second Luminance BIN2 images taken with Using itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
(3 of 3) Stacks of 15 - 15 Second Luminance BIN2 images taken with Using itelescope.net's (TEL T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer)
Other links:

Oct 2, 2015

The Recovery on 2nd Opposition of the Asteroid 2011 YS62 From 2015-09-26 To 2015-09-28


 Observing Runs Looking for 2011 YS62 from 2015-08-26 to 2015-08-28


When it comes to target selection there two criteria I use first is would additional observations be useful, the second is the target in range of the telescope's capability. To find targets I check one or all of the lists (see below) and see if the target is range of the telescope's capability (if it is important I will push the limit of the range) Then I will plan an observing run.  Recently I checked the Arecibo Asteroid Schedule and I saw they had requested optical astrometry for 2011 YS62.  At the time this asteroid had a data-arc span of 89 days and had been unobserved for 1314 days (3.597 years)

First Night 
I first did run of 15 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27), with no luck,. Next I used  Find_Orb to generate new orbital elements with Epoch  2015 Sep 26.0  and did a another run 15. I also used  Find_Orb's Monte Carlo function to generate a lot of clones(virtual asteroids) orbital elements and then manually add them to Astrometrica's MPCOrb.dat file. Then  I created 3 stacks of  5 images and found a moving object near the known object box of one of the clones. I assigned  a temporary designation to the object and  submitted night one's observations to the Minor Planet Center. 

Astrometrica object verification window a stack (1 of  3 First Night )  a  stacks 5 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (2 of  3 First Night )  a  stacks 5 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (1 of  3 First Night )  a  stacks 5 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Second Night
Using Find_Orb I generated two orbits one was with just night one’s observations, the other with 2011 YS62 and night one's observations (“updated orbit”) and manually replaced the "clones" orbital elements.  Next I  ran a series of 6-120 Second Luminance BIN2 Images on  itelescope.net's (TEL T27) and  created a stacks of  5 images and found an object at the  known object  box for  the "updated orbit".  Then I ran a second run of 6 images and created a stack of 5 and saw that the object was moving.  Later on I ran another run of 15 images and created a 3 more stacks of 5 images. I assigned a (new) temporary designation to the object and submitted the second night’s observations to the Minor Planet Center.  Shortly thereafter the object was listed on the NEO Confirmation Page.              
Astrometrica object verification window a stack (1 of  5 Second Night )  a  stacks 5 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (2 of  5 Second Night )  a  stacks 5- 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (3 of  5 Second Night )  a  stacks 5- 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (4 of  5 Second Night )  a  stacks 5- 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (3 of  5 Second Night )  a  stacks 5- 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Third Night
I did the same orbit  update has I did the night before then, I obtain 32--120 Second Luminance BIN2 images with itelescope.net's (TEL T27) and created 3 stacks of  10  image and  submitted  the third night observations to the Minor Planet Center using the designation that was on the NEO Confirmation Page.
Astrometrica object verification window a stack (1 of  3 First Night )  a  stacks 10 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (2 of  3 First Night )  a  stacks 10 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
Astrometrica object verification window a stack (3 of  3 First Night )  a  stacks 10 - 120 Second Luminance BIN2 Images on itelescope.net's (TEL T27 0.70-m f/6.6 CDK astrograph + CCD)  at Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62)
On 2015 Sept. 28 the Minor Planet Center issued MPEC 2015-S102: 2011 YS62  with the observations from the three nights of and updated orbital elements.

 Background
(as of 2015-09-30)
  •  Object: 2011 YS62
  • Approximate Diameter: 310 m - 680 m (1017.06 feet to 2230.97 feet) ( Absolute Magnitude:  H=  19.7 )
  •  Orbit Type: Amor
  • First Observed was made  on: 2011 12 29.15398
  • First Observed  By: Pan-STARRS 1 (MPC Code F51) 
  •  Assignment of asterisk: Catalina Sky Survey (MPC Code 703) For infomation on how discoverer is defined read MPEC 2010-U20 : EDITORIAL NOTICE
  •  Last Observed: 2015 09 28.58389
  •  Data-Arc Span: 1405 days (3.85 yr) 
  •  Number Oppositions :2
  •  Number of Observations Made:  85
  • Next Close-Approach:  Will safely pass Earth on  2015-Nov-2 at Nominal Distance of 0.0914513682160852 AU (35.59(LD)) or 8,500,935.758 miles or ( 13,680,929.957 KM)
  • On the Goldstone Asteroid Schedule: NO
  • On the Arecibo Asteroid Schedule:  YES,  Dates: 2015 Nov 29 (Request Optical Astrometry: No(It was request before recovery was made), Request Optical  Lightcurve:NO, Request Optical Characterization NO)
  Target lists
   
  Other Links