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Contents  on 1 December '07

• IAU Minor Planet Center
  • NEOCP Activity -- one listing: 1 updated
  • New MPECs -- six MPECs
  • Observers -- sixteen observing facilities
• Impact Risk Monitoring -- two objects
• 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 news: framed access (best),  RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 this year 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 1 December '07

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. So far The Tracking News has counted a total of four objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

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

New MPECs  on 1 December '07

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2007-X01 time-stamped "00:40 UT" - 2003 BH84 - see below
• MPEC 2007-X02 time-stamped "00:44 UT" - 2007 WE55 - see below
• MPEC 2007-X03 time-stamped "00:47 UT" - 2007 WF55 - see below
• MPEC 2007-X04 time-stamped "07:10 UT" - Daily Orbit Update - see below
• MPEC 2007-X05 time-stamped "14:49 UT" - Comet C/2007 W1 (Boattini) - see below
• MPEC 2007-X06 time-stamped "21:22 UT" - 2007 RW10, 2007 RG283, 2007 RH283

MPEC 2007-X06 - "21:22 UT" - 2007 RW10, 2007 RG283, 2007 RH283

• K07RS3H   2007 RH283 was discovered at 0626 UT on 15 Sept. by Mt. Palomar, which observed it at Sept. 15.27p1, 15.34p1, 16.22p1, and 16.27p1. The discovery was confirmed by Lowell Obs. Anderson Mesa Station (Oct. 4.15p1, 4.22p1, 4.28p1, Nov. 17.14p1, 17.20p1 & 17.25p1).
• K07RS3G   2007 RG283 was discovered at 0539 UT on 15 Sept. by Mt. Palomar, which observed it at Sept. 15.24p1, 15.28p1, 16.15p1, and 16.19p1. The discovery was confirmed by Anderson Mesa Sta. (Oct. 2.24p1, 2.39p1, Nov. 17.13p1, 17.19p1 & 17.24p1).
• K07R10W   2007 RW10 from Mt. Palomar (Sept. 16.33p1, 16.38p1, Oct. 19.11p1, 19.16p1, 19.27p1, Nov. 6.15p1, 6.21p1, 6.26p1, 29.09p1, 29.14p1 & 29.26p1) and Anderson Mesa Sta. (Oct. 4.17p1, 4.23p1 & 4.28p1)

MPEC 2007-X05 - "14:49 UT" - Comet C/2007 W1 (Boattini)

• CK07W010   C/2007 W1 (i=9.8°, q=0.870 AU, TP=2008 June 26.417 TT) from Ageo Obs. (Nov. 24.80-81p2 & 30.82-83p3), Montcabre Obs. (Nov. 27.23-24p3), and Cordell-Lorenz Obs. (Nov. 30.45-47p4)

<< DOU on 1 Dec. '07 >>  MPEC 2007-X04 - "07:10 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K07W55E   2007 WE55 (arc=2 days, H=19.9 ~355m) from Farra d'Isonzo Obs. (Dec. 1.02-04p2)
• K07W03T   2007 WT3 (small asteroid, Q=4.077 AU, arc=12 days, H=24.2 ~49m) from Astronomical Research Obs. (ARO) (Nov. 30.14-18p3 at V=22.1-2)
• Observations of recently (no longer) risk-listed objects
• K07W04V   2007 WV4 (i=38.2°, arc=11 days, H=19.3 ~467m) from Madonna di Dossobuono Obs. (Nov. 29.95p3)
• K07VD7W   2007 VW137 (arc=20 days, H=18.1 ~812m) from ARO (Nov. 28.22-23p3)
• Observations of small asteroids (H>22.0)
• K07W04Z   2007 WZ4 (arc=10 days, H=24.4 ~45m) from Silver Spring Obs. (Nov. 28.17p1 & 28.29p1), ARO (Nov. 28.24-26p3), and Madonna di Dossobuono Obs. (Nov. 29.92p3)
• K07W04T   2007 WT4 (arc=11 days, H=22.5 ~107m) from ARO (Nov. 30.19-21p3)
• K07W03M   2007 WM3 (arc=11 days, H=23.1 ~81m) from ARO (Nov. 28.10-11p3)
• K07VJ1F   2007 VF191 (arc=15 days, H=22.4 ~112m) from ARO (Nov. 30.27-28p3)
• K07V03D   2007 VD3 (arc=27 days, H=22.1 ~129m) from ARO (Nov. 28.14p3)
• Observations of almost-small asteroids (21.7<H<=22.0)
• K07V08H   2007 VH8 (Q=4.302 AU, arc=23 days, H=21.8 ~148m) from ARO (Nov. 28.08-10p3)
• Observations of other objects
• K07W05B   2007 WB5 (arc=10 days, H=18.9 ~562m) from ARO (Nov. 27.23p2 & 30.12-13p3)
• K07W04X   2007 WX4 (arc=10 days, H=20.0 ~339m) from ARO (Nov. 28.08-09p3)
• K07VI4J   2007 VJ184 (arc=16 days, H=21.2 ~195m) from ARO (Nov. 28.01-02p2)
• K07V08L   2007 VL8 (arc=23 days, H=21.3 ~186m) from ARO (Nov. 28.19-20p3)
• K07V07X   2007 VX7 (arc=25 days, H=19.5 ~426m) from ARO (Nov. 28.15-16p3)
• K07U51Q   2007 UQ51 (arc=28 days, H=20.2 ~309m) from ARO (Nov. 28.11-13p3)
• K07U06S   2007 US6 (arc=3 opp, H=18.3 ~741m) from Hamamatsu-Yuto Obs. (Nov. 30.62-63p3)
• K07T71D   2007 TD71 (i=49.8°, arc=47 days, H=18.5 ~676m) from ARO (Nov. 30.17-18p3)
• K07T23B   2007 TB23 (i=38.3°, arc=51 days, H=18.7 ~616m) from ARO (Nov. 30.12-13p3)
• K07R05F   2007 RF5 (arc=86 days, H=18.4 ~708m) from ARO (Nov. 30.02-03p3)
• K07M06L   2007 ML6 (arc=162 days, H=18.5 ~676m) from ARO (Nov. 30.20-21p3)
• K06UL6S   2006 US216 (IEO, q=0.278 AU, Q=0.995 AU, arc=3 opp, H=19.8 ~371m) from LONEOS (2005 Nov. 6.46-52p4)
• H0903   170903 2004 WS2 from Naef Obs. (Nov. 30.91-95p4)
• 66251   66251 1999 GJ2 from Montana Blanca Obs. (Nov. 30.99-01p3)

MPEC 2007-X03 - "00:47 UT" - 2007 WF55

• K07W55F   2007 WF55 (H=19.0 ~537m) was discovered at 0730 UT on 29 Nov. by LINEAR, which observed it at Nov. 29.31-36p5. The discovery was confirmed by Lumezzane Obs. (Nov. 30.88p4) and Farra d'Isonzo Obs. (Nov. 30.99-00p3).

MPEC 2007-X02 - "00:44 UT" - 2007 WE55

• K07W55E   2007 WE55 (risk-listed, H=19.9 ~355m) was discovered at 0628 UT on 29 Nov. by LINEAR, which observed it at Nov. 29.27-31p4. The discovery was confirmed by Lumezzane Obs. (Nov. 30.84-86p3).

MPEC 2007-X01 - "00:40 UT" - 2003 BH84

• K03B84H   2003 BH84 (H=17.1 ~1.29 km) from LINEAR (Nov. 29.13-18p5), ARO (Nov. 30.14-16p4), La Canada Obs. (Nov. 30.82-83p3), Lumezzane Obs. (Nov. 30.83p4), and Farra d'Isonzo Obs. (Nov. 30.97-98p2)

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Observers  on 1 December '07

Sixteen observing facilities appear in today's MPECs.

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Impact Risk Monitoring  on 1 December '07

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 1 December '07

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