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Contents  on 26 February '10

• IAU Minor Planet Center
  • NEOCP Activity -- three listings: 3 updated
  • New MPECs -- three MPECs
• Observers -- nine 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
• 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.

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

NEOCP Activity  on 26 February '10

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2328 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three updated listings. 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 26 February '10

Minor Planet Electronic Circulars

As of last check at 2328 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2010-D83 time-stamped "07:24 UT" - Daily Orbit Update - see below
• MPEC 2010-D84 time-stamped "14:20 UT" - 2007 EF - see below
• MPEC 2010-D85 time-stamped "21:59 UT" - 2010 DM56

MPEC 2010-D85 - "21:59 UT" - 2010 DM56

• K10D56M   2010 DM56 (Earth MOID=2.6 LD, H=20.0 ~339m) was discovered at 0628 UT on 19 Feb. by WISE, which observed it at Feb. 19.27p1, 19.47p1, 19.60p1, 19.67p1, 19.73p1, 19.80p2, 19.87p1, 19.93p1, 20.06p1, 20.13p1, 20.20p1, 20.26p1, 20.33p1, 20.39p1, 20.53p1, 20.59p1, 20.66p2, 20.73p1, 20.79p1, 20.86p1, 21.12p1, 21.19p1, 21.25p1, 21.32p1, 21.45p1, 21.59p1, 21.72p1, 21.85p1, 21.98p1, 22.11p1, and 22.18p1. The discovery was confirmed by Great Shefford Obs. (Feb. 26.81-86p3).

MPEC 2010-D84 - "14:20 UT" - 2007 EF

• K07E00F   2007 EF (Earth MOID=9.6 LD, H=21.5 ~170m) from Tenagra II Obs. (Feb. 25.52-53p3 & 26.50-54p18)

<< DOU on 26 Feb. '10 >>  MPEC 2010-D83 - "07:24 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K10D01G   2010 DG1 (small asteroid, arc=8 days, H=24.5 ~43m) from the Spacewatch 1.8m telescope (Feb. 25.29-30p3)
• Observations of recently (no longer) risk-listed objects
• K10D01W   2010 DW1 (arc=8 days, H=19.9 ~355m) from Tenagra II Obs. (Feb. 25.45-46p3)
• K10D00P   2010 DP (i=36.5°, arc=9 days, H=18.5 ~676m) from Sandlot Obs. (Feb. 25.43-44p2)
• K10C19J   2010 CJ19 (q=1.601 AU, arc=10 days, H=19.4 ~446m) from Desert Moon Obs. (Feb. 24.37-39p3)
• K10C19G   2010 CG19 (i=62.7°, arc=10 days, H=19.5 ~426m) from Schiaparelli Obs. (Feb. 20.96-97p2 & 21.05p1)
• Observations of small asteroids (H>22.0)
• K10D02E   2010 DE2 (arc=5 days, H=26.8 ~15m) from Schiaparelli Obs. (Feb. 21.09-10p5) and Tenagra II Obs. (Feb. 25.46-47p5)
• K10D01Z   2010 DZ1 (arc=6 days, H=25.6 ~26m) from Tenagra II Obs. (Feb. 25.26-27p2)
• Observations of other objects
• K10C44M   2010 CM44 (arc=12 days, H=19.1 ~513m) from Tenagra II Obs. (Feb. 25.45p2)
• K10C18L   2010 CL18 (Q=4.208 AU, arc=11 days, H=18.4 ~708m) from Schiaparelli Obs. (Feb. 21.11-12p5)
• K10C01R   2010 CR1 (q=0.366 AU, arc=2 opp, H=18.4 ~708m) from NEAT's Mt. Palomar telescope (2002 Feb. 11.46-48p5)
• K09U03N   2009 UN3 (i=37.4°, arc=129 days, H=18.5 ~676m) from Petit Jean Mtn. South Obs. (PJMSO) (Feb. 25.46-47p5)
• K08J00G   2008 JG (arc=3 opp, H=20.9 ~224m) from Schiaparelli Obs. (Feb. 21.01p2 & 21.08-09p2)
• K08E05V   2008 EV5 (arc=3 opp, H=20.0 ~339m) from WISE (Feb. 19.36p1, 19.62p1, 20.02p1, 20.15p1, 20.42p1, 20.55p1, 20.68p1, 20.95p1, 21.08p1, 21.21p1, 22.14p1, 22.27p2, 22.40p1, 22.53p1, 22.67p1, 23.06p2, 23.19p1, 23.59p1, 23.72p1 & 23.99p2)
• K02N16W   2002 NW16 (arc=2 opp, H=18.1 ~812m) from WISE (Feb. 23.23p1, 23.30p1, 23.36p1, 23.50p2, 23.63p1, 23.76p1, 23.89p1, 24.03p1, 24.16p1, 24.29p1 & 24.42p1)
• K00W67C   2000 WC67 (Q=4.236 AU, arc=3 opp, H=18.6 ~645m) from WISE (Feb. 22.61p1, 22.74p1, 23.07p1, 23.14p1, 23.60p1, 23.73p1, 23.86p1 & 24.13p1)
• J99R32C   1999 RC32 (arc=4 opp, H=18.4 ~708m) from Schiaparelli Obs. (Feb. 21.13-14p3)
• J96B01A   1996 BA1 (arc=2 opp, H=20.7 ~245m) from Schiaparelli Obs. (Feb. 20.00p1 & 21.07p2)
• L8863   218863 2006 WO127 from PJMSO (Feb. 25.06-07p5)

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Observers  on 26 February '10

Nine observing facilities appear in today's MPECs.

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Impact Risk Monitoring  on 26 February '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 26 February '10

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