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This past week the University of Maryland reported that the EPOXI Deep Impact spacecraft on November 4th passed through "a storm of fluffy particles of water ice being spewed out by carbon dioxide jets coming from the rough ends of [103P/Hartley 2, while] a different process was causing water vapor to come out of the comet's mid-section." For more info, see this, this, and also this. Image credit: NASA/JPL/UM.

Contents  on 20 November '10

• IAU Minor Planet Center
  • NEOCP Activity -- two listings: 1 new, 1 updated
  • New MPECs -- one MPEC
• Observers -- eight observers
• Impact Risk Monitoring -- one object
• Chronology

Resources:

• Consolidated Risk Tables - the CRT page
    Of 366 risk-listed objects, 48 have had news in the last 30 days. Updated at 1634 UTC on 20 Nov.
• Earth's Busy Neighborhood Traffic Report
    Eight objects are known to be within ten LD of Earth today. Updated at 1949 UTC on 20 Nov.
• Ephemerides for risk-rated and nearby objects
• News image catalog
• 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 20 November '10

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and one updated listing. Of these, one was a "one nighter." So far The Tracking News has counted a total of four listings on the NEOCP at some point today.

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

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

New MPECs  on 20 November '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 20 Nov. '10 >>  MPEC 2010-W15 - "07:12 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K10VJ4W   2010 VW194 (small asteroid, arc=4 days, H=26.5 ~17m) from Astronomical Research Obs. Westfield (Nov. 19.33-36p3)
• Observations of recently (no longer) risk-listed objects
• K10VE0C   2010 VC140 (small asteroid, arc=4 days, H=27.9 ~9m) from ARO Westfield (Nov. 19.37-43p5)
• K10VD9Z   2010 VZ139 (small asteroid, arc=21 days, H=22.9 ~89m) from ARO Westfield (Nov. 19.18-19p3)
• Observations of small asteroids (H>22.0)
• K10W00B   2010 WB (arc=3 days, H=24.0 ~54m) from ARO Westfield (Nov. 19.27p4)
• K10V00U   2010 VU (arc=13 days, H=24.9 ~35m) from David Tholen's team on Mauna Kea (Nov. 14.41-42p3 at R=22.5-6)
• Observations of almost-small asteroids (21.7<H<=22.0)
• J98H49G   1998 HG49 (arc=4 opp, H=21.8 ~148m) from LINEAR (Nov. 19.38-42p7)
• Observations of other objects
• K10W00J   2010 WJ (arc=2 days, H=18.0 ~851m) from ARO Westfield (Nov. 19.27-29p4) and LINEAR (Nov. 19.40-44p4)
• K10W00H   2010 WH (arc=2 days, H=19.0 ~537m) from ARO Westfield (Nov. 19.30-31p4)
• K10VJ0Y   2010 VY190 (arc=4 days, H=19.0 ~537m) from ARO Westfield (Nov. 19.23-25p4)
• K10VD9Y   2010 VY139 (Q=4.095 AU, arc=5 days, H=20.5 ~269m) from ARO Westfield (Nov. 19.45-46p3)
• K10VD9K   2010 VK139 from the Siding Spring Survey (SSS) (Nov. 18.49p2)
• K10V72D   2010 VD72 (arc=9 days, H=21.5 ~170m) from SSS (Nov. 18.51p2)
• K10V71Z   2010 VZ71 from Desert Moon Obs. (Nov. 18.23-28p3)
• K10T55C   2010 TC55 (Q=4.607 AU, arc=38 days, H=20.3 ~295m) from ARO Westfield (Nov. 19.30p4)
• K10T54Y   2010 TY54 (arc=39 days, H=21.5 ~170m) from ARO Westfield (Nov. 19.31-32p3)
• K10T03M   2010 TM3 (arc=2 opp, H=20.6 ~257m) from LINEAR (Nov. 19.32-37p5)
• K10S13D   2010 SD13 (Q=4.300 AU, arc=54 days, H=18.8 ~589m) from ARO Westfield (Nov. 19.03-04p4) and Wishing Star Obs. (Nov. 19.99-01p3)
• K10RI1F   2010 RF181 (arc=69 days, H=20.7 ~245m) from Tzec Maun Obs. Mayhill (Nov. 19.48-50p4)
• K10R80N   2010 RN80 (arc=70 days, H=20.2 ~309m) from ISON-NM Obs. (Nov. 19.34p3)
• K10NB7W   2010 NW117 (arc=135 days, H=18.1 ~812m) from ARO Westfield (Nov. 19.01-02p3) and Wishing Star Obs. (Nov. 20.02-03p3)
• K10L97O   2010 LO97 (arc=160 days, H=18.8 ~589m) from LINEAR (Nov. 19.32-37p5) and Wishing Star Obs. (Nov. 20.12-14p3)
• K10L63Y   2010 LY63 from ARO Westfield (Nov. 19.10-12p5)
• K07VD8C   2007 VC138 (arc=2 opp, H=19.4 ~446m) from ARO Westfield (Nov. 19.12-16p4)
• K02V68E   2002 VE68 (arc=3 opp, H=20.5 ~269m) from ARO Westfield (Nov. 19.08-10p4)
• G9352   169352 2001 UY16 from Wishing Star Obs. (Nov. 20.05-06p3)
• B1253   111253 2001 XU10 from LINEAR (Nov. 19.45-50p5)
• 18882   18882 1999 YN4 from LINEAR (Nov. 19.39-44p5)

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Observers  on 20 November '10

Eight observers appear in today's MPEC.

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Impact Risk Monitoring  on 20 November '10

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 20 November '10

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