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Wednesday12 November 20034:10pm MST2003-11-12 UTC 2310
Today's news Page status: done
  • News briefs – 1990 OS news, Rosetta status & an asteroid conjunction
  • Risk monitoring – 2003 UO12 & 2003 UX34 cleared of last impact solutions
News briefs

Radar news:  In its present encounter with Earth, 1990 OS is at its closest today, at about 8.9 lunar distances. This morning's Daily Orbit Update MPEC reports observation of 1990 OS by radar from Arecibo in Puerto Rico on November 6th and from Goldstone in southern California yesterday. As reported November 10th, Arecibo observations revealed that 1990 OS is binary.

Rosetta:  The Rosetta Journal has an entry dated November 7th with pictures and brief explanation that deployment testing of the -Y wing of the spacecraft's solar array was successful and "is now ready to fly."

Asteroid alignment:  It just came to A/CC's attention that Sky & Telescope has an item, "Five Asteroids Meet," that tells about a conjunction of large Main Belt asteroids within one degree that has been underway since November 3rd, was tightest on the 9th, and ends on the 14th. "A set of CCD images spanning an hour or so, when stacked, should clearly show the five asteroids' dotted trails."

The prediction came from Aldo Vitagliano using his free SOLEX Solar System dynamics modeling software that runs under Win9x/2000/XP [not MS-DOS as originally reported].


Summary Risk Table - sources checked at 1858 UTC, 12 Nov

Object

Assessment

Years

VI
PS
cum
PS
max
T
S
Arc 
days
 2003 UX34JPL 11/12R E M O V E D
 2003 UO12JPL 11/12R E M O V E D
NEODyS 11/4R E M O V E D
VI = count of "virtual impactors" (impact solutions)
See A/CC's Consolidated Risk Tables for more and maybe
  newer details, and check the monitors' links for latest info.
Risk monitoring yesterday 12 Nov. 18 Nov.

JPL removed 2003 UO12 overnight and, after today's Daily Orbit Update MPEC with the new observation of 2003 UX34 that A/CC reported yesterday, also removed that object. It was observing with the 2.5m Isaac Newton Telescope on La Palma that made the difference in both cases. There are now no objects under recent observation that have impact solutions.

http://www.HohmannTransfer.com/mn/0311/12.htm
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