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Contents  on 12 December '08

• IAU Minor Planet Center
  • NEOCP Activity -- none
  • New MPECs -- three MPECs
• Observers -- eight observing facilities
• Impact Risk Monitoring -- one object
• Chronology

Resources:

• Consolidated Risk Tables - the CRT page
• Earth's Busy Neighborhood Traffic Report
• Ephemerides for risk-rated and nearby objects
• Old & new CRT Archive
• Old News Archive & Small Objects Archive

The latest A/CC news is available via framed access,  RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

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NEOCP Activity  on 12 December '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2358 UTC). It was last noted active on December 9th.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

New MPECs  on 12 December '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2008-X79 time-stamped "07:06 UT" - Daily Orbit Update - see below
• MPEC 2008-X80 time-stamped "14:57 UT" - 2007 DU103 - see below
• MPEC 2008-X81 time-stamped "18:06 UT" - Comet P/2008 X4

MPEC 2008-X81 - "18:06 UT" - Comet P/2008 X4

• PK08X040   P/2008 X4 (i=10.7°, q=0.496 AU, TP=2008 Dec. 18.34 TT) from the HI1-B instrument (4) aboard STEREO-B (Dec. 8.24p2, 8.35p2, 8.46p2, 8.52p2, 8.57p2, 8.68p2, 8.74p2, 8.79p2, 8.85p2, 8.91p2, 9.02p2, 9.07p2, 9.13p2, 9.24p2, 9.29p2, 9.35p2, 9.41p2, 9.46p2, 9.52p2, 9.57p2, 9.63p2, 9.68p2, 9.74p2, 9.79p2, 9.85p2, 9.91p2 & 9.96p2)

MPEC 2008-X80 - "14:57 UT" - 2007 DU103

• K07DA3U   2007 DU103 (H=17.5 ~1.07 km) from David Tholen's team on Mauna Kea (Sept. 16.57-58p4 at R=22.3-6 & Oct. 9.42-43p4 at R=22.5-6)

<< DOU on 12 Dec. '08 >>  MPEC 2008-X79 - "07:06 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K08X01C   2008 XC1 (small asteroid, arc=7 days, H=23.6 ~65m) from the Siding Spring Survey (SSS) (Dec. 10.59p4) and Sandlot Obs. (Dec. 11.33p5)
• Observations of recently (no longer) risk-listed objects
• K08X01M   2008 XM1 (almost small, Q=4.218 AU, arc=7 days, H=22.0 ~135m) from Astronomical Research Obs. (ARO) (Dec. 11.04-05p5)
• K08W63Q   2008 WQ63 (arc=19 days, H=20.0 ~339m) from Sandlot Obs. (Dec. 11.34-35p3)
• Observations of other objects
• K08X03E   2008 XE3 (Q=4.053 AU, arc=70 days, H=16.3 ~1.86 km) from Desert Moon Obs. (Dec. 11.40-43p3)
• K08X02W   2008 XW2 (arc=5 days, H=20.7 ~245m) from Sandlot Obs. (Dec. 11.39-40p3)
• K08X02V   2008 XV2 (arc=5 days, H=20.3 ~295m) from Desert Moon Obs. (Dec. 11.33-38p3) and Sandlot Obs. (Dec. 11.36-38p4)
• K08X02E   2008 XE2 (arc=7 days, H=19.1 ~513m) from Desert Moon Obs. (Dec. 11.45-47p3)
• K08X00M   2008 XM (q=0.110 AU, arc=9 days, H=19.8 ~371m) from Desert Moon Obs. (Dec. 11.23-27p3)
• K08U07E   2008 UE7 (arc=46 days, H=20.4 ~282m) from Hamamatsu-Yuto Obs. (Dec. 11.71-74p8)
• K08TF7E   2008 TE157 (Q=4.444 AU, arc=70 days, H=20.7 ~245m) from Desert Moon Obs. (Dec. 11.14-19p3)
• K06V14B   2006 VB14 (arc=2 opp, H=18.5 ~676m) from Hamamatsu-Yuto Obs. (Dec. 11.65-68p10)
• K05X04M   2005 XM4 (arc=2 opp, H=19.6 ~407m) from Desert Moon Obs. (Dec. 11.29-30p3)
• G2900   162900 2001 HG31 from Chabot Obs. (Dec. 11.21-22p4)
• D6923   136923 1998 JH2 from Chabot Obs. (Dec. 11.32p4)
• 04179   4179 Toutatis (1989 AC) from Hamamatsu-Yuto Obs. (Dec. 11.76-78p7)

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Observers  on 12 December '08

Eight observing facilities appear in today's MPECs.

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Impact Risk Monitoring  on 12 December '08

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

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Chronology  on 12 December '08

Times are UTC for when items were noted or added by The Tracking News.