2018 Close Approaches

Small pieces of rock, with a big influence (just ask the dinosaurs).
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Amy Brouillette
Posts: 17
Joined: April 4th, 2012, 5:32 pm

2018 Close Approaches

Post by Amy Brouillette » March 22nd, 2018, 1:20 pm

Hey y'all. I'm going to be taking over the close approach postings for Mr. Chris.

2018 FR3
Thursday, March 22, 2018, 9:58pm CDT
Classification: Apollo
Diameter: 13 m - 29 m
Probable Distance: 1.13 LD


This prediction was derived from 60 observations over a single day. I was unable to find a listing for impact likelihood with the Sentry program.

2018 FF3's Orbit Diagram: https://ssd.jpl.nasa.gov/sbdb.cgi?sstr= ... ;cad=0#orb
Minor Planet Electronic Circular: https://minorplanetcenter.net/mpec/K18/K18F86.html


2018 FZ3
Friday, March 23, 2018, 11:21am CDT
Classification: Apollo
Diameter: 8.4 m - 19 m
Probable Distance: 0.50 LD


This data was calculated with 27 observations over a span of one day. I was unable to find a listing for impact likelihood with the Sentry program. There was a candidate with the same number of observations with the Scout program, but the magnitudes did not match.

2018 FZ3's Orbit Diagram: https://ssd.jpl.nasa.gov/sbdb.cgi?sstr= ... ;cad=0#orb
Minor Planet Electronic Circular: https://minorplanetcenter.net/mpec/K18/K18FA5.html



Let me know if you have any suggestions for ways I can improve this.

Christopher K.
Posts: 4320
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: 2018 Close Approaches

Post by Christopher K. » September 8th, 2018, 7:35 pm

2018 RC
Sunday, 9 September 2018, 7:09am CDT
Classification: Aten
Diameter: 31 to 69 meters
Probable Distance: 224,850 kilometers (0.6 LD)


133 observations (from 3 to 7 September) were used for this prediction. Some of these observations which appear in the Circular came from Mount John Observatory. I could find no impact risk for 2018 RC (please note this was my first time using the new search function at CNEOS).

Atens orbit mostly inside Earth's orbit.

2018 RC's Orbit Diagram: https://ssd.jpl.nasa.gov/sbdb.cgi?sstr= ... ;cad=1#orb
2017 DP109's Minor Planet Electronic Circular: https://www.minorplanetcenter.net/db_se ... ommit=Show

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