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 Post subject: 2017 Close Approaches
PostPosted: March 2nd, 2017, 8:53 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3506
Location: Baton Rouge, LA
2017 EA
Thursday, 2 March 2017, 8:05am CST
Classification: Apollo
Diameter: 2 to 4 meters
Probable Distance: 19,200 kilometers (0.05 LD) [That is not a misprint!]


Fifty-nine observations (all made today) were used for this prediction. Some of these observations (which appear in the Circular) came from the Steward Observatory at Kitt Peak. The most dire impact risk I could find associated with 2017 EA was a 0.00011% chance on 3 March 2046.

2017 EA's Orbit Diagram: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017%20EA;orb=1
2016 DV1's Minor Planet Electronic Circular: http://www.minorplanetcenter.net/mpec/K17/K17E15.html

As of late March/early April the Near Earth Object program will have a new website...
http://cneos.jpl.nasa.gov/
...but the old site will stay up for now.

[I will attempt to post a majority of close approaches (defined here as three lunar distances or closer.]


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PostPosted: March 4th, 2017, 7:13 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3506
Location: Baton Rouge, LA
Observers spotted 2017 EA just six hours before its close approach to Earth. It was not observed at close approach since it was in Earth's shadow at that time.

More information:
http://neo.jpl.nasa.gov/news/news194.html


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PostPosted: March 4th, 2017, 7:41 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3506
Location: Baton Rouge, LA
2017 DP109
Friday, 3 March 2017, 1:40am CST
Classification: Apollo
Diameter: 11 to 25 meters
Probable Distance: 998,400 kilometers (2.6 LD)


Twenty-eight observations (from 23 February to 2 March) were used for this prediction. Some of these observations (which appear in the Circular) came from the the Magdalena Ridge Observatory. The most dire impact risk I could find associated with 2017 DP109 was a 0.000019% chance on 2 March 2086.

2017 DP109's Orbit Diagram: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017%20DP109
2017 DP109's Minor Planet Electronic Circular: http://www.minorplanetcenter.net/mpec/K17/K17E28.html


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PostPosted: March 4th, 2017, 7:51 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3506
Location: Baton Rouge, LA
2017 DS109
Sunday, 5 March 2017, 8:29am CST
Classification: Apollo
Diameter: 17 to 39 meters
Probable Distance: 345,600 kilometers (0.9 LD)


133 observations (from 14 February to 4 March) were used for this prediction. Some of these observations (which appear in the Circular) came from the the Cordell-Lorenz Observatory. I could find at this time no impact risk associated with 2017 DS109; the next closest predicted pass (after tomorrow morning) is on 26 May 2023.

2017 DS109's Orbit Diagram: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017%20DS109
2017 DS109's Minor Planet Electronic Circular: http://www.minorplanetcenter.net/mpec/K17/K17E32.html


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PostPosted: March 18th, 2017, 4:31 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3506
Location: Baton Rouge, LA
2017 FK
Sunday, 19 March 2017, 7:00pm CDT
Classification: Apollo
Diameter: 9 to 20 meters
Probable Distance: 652,800 kilometers (1.7 LD)


Forty-two observations (from yesterday and today) were used for this prediction. Some of these observations (which appear in the Circular) came from the Bisei Spaceguard Center. I could find at this time no impact risk associated with 2017 FK; the next closest predicted pass is on 21 March 2061 (give or take one day and ten hours).

2017 FK's Orbit Diagram: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017%20FK
2017 FK's Minor Planet Electronic Circular: http://www.minorplanetcenter.net/mpec/K17/K17F16.html


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PostPosted: March 18th, 2017, 4:50 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3506
Location: Baton Rouge, LA
2017 FJ
Tuesday, 21 March 2017, 10:04am CDT
Classification: Apollo
Diameter: 6 to 14 meters
Probable Distance: 768,000 kilometers (2.0 LD)


Twenty-three observations (from yesterday and today) were used for this prediction. Some of these observations (which appear in the Circular) came from the Sandlot Observatory. I could find at this time no impact risk associated with 2017 FJ; the next closest predicted pass is on 10 July 2091 (give or take one day and eleven hours).

2017 FJ's Orbit Diagram: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017%20FJ
2017 FJ's Minor Planet Electronic Circular: http://www.minorplanetcenter.net/mpec/K17/K17F15.html


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