A/CC's The Tracking News

The Tracking News on Friday, 2012-02-03

The latest checks by A/CC noted online here are 2359 for NEODyS (backup), 2359 for JPL Sentry, 2359 for MPC MPECs, and 2359 UTC for the MPC NEO Confirmation Page (NEOCP), which had eighteen objects listed. Of these, ten were "one nighters."

Radar update

Radar astrometry added for one object: 2006 CJ. Noted at 2359 UTC.

2012 CU - JPL risk posted

JPL Sentry has posted 2012 CU as an impact risk. Noted at 2203 UTC. - [direct]

2012 CU - MPEC 2012-C21

Key info includes, risk-listed, Earth MOID = 1.2 LD, i = 0.3 deg., H = 25.8, roughly 23m, close passer in diameter. Dated 2002 UT, noted at 2040 UTC. - [direct]

2012 CT - MPEC 2012-C20

Key info includes, H = 21.4, roughly 178m in diameter. Dated 1959 UT, noted at 2040 UTC. - [direct]

2012 CS - MPEC 2012-C19

Key info includes, small asteroid, Q = 4.052 AU, Earth MOID = 2.3 LD, i = 1.1 deg., H = 23.0, roughly 85m in diameter. Dated 1956 UT, noted at 2040 UTC. - [direct]

2012 CR - MPEC 2012-C18

Key info includes, borderline-small, H = 21.8, roughly 148m in diameter. Dated 1952 UT, noted at 2040 UTC. - [direct]

2006 AL8 - MPEC 2012-C17

Key info includes, q = 0.377 AU, Q = 6.300 AU, H = 18.3, roughly 741m in diameter. Dated 1933 UT, noted at 2040 UTC. - [direct]

2012 BM86 - JPL risk updated

JPL Sentry has updated its 2012 BM86 risk assessment. Noted at 1454 UTC. - [direct]

2012 BL86 - JPL risk removed

JPL Sentry has removed 2012 BL86 as an impact risk. Noted at 1454 UTC.

2012 BJ86 - NEODyS risk updated

NEODyS has updated its 2012 BJ86 risk assessment. Noted at 1454 UTC. - [direct]

Daily Orbit Update - MPEC 2012-C15

Observations of 49 objects are reported. Dated 0606 UT, noted at 1454 UTC. - [direct]

2012 CG - MPEC 2012-C16

Key info includes, Centaur, q = 13.519 AU, Q = 20.376 AU, H = 8.7, roughly 61.6 km in diameter. Dated 1312 UT, noted at 1454 UTC. - [direct]

2012 BO11 - NEODyS risk removed

NEODyS has removed 2012 BO11 as an impact risk. Noted at 1454 UTC.

Traffic Report for "Earth's Busy Neighborhood"

There is one object known to be within ten lunar distances (LD) of Earth today, February 3rd. One other is known to be approaching to within ten LD between now and early March. Nine objects recently passed Earth at less than ten LD and are of continuing active interest. Updated at 1551 UTC. New data has been posted today for one object.