Contents on 6 February '10
- IAU Minor Planet Center
- NEOCP Activity -- six listings: 2 new, 4 updated
- New MPECs -- one MPEC
- Observers -- five 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.
NEOCP Activity on 6 February '10
The MPC's NEO Confirmation Page has 6 listings: 2 new, 4 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and four updated listings. Of these, four were "one nighters."
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 6 February '10
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
<< DOU on 6 Feb. '10 >> MPEC 2010-C17 - "07:19 UT" - Daily Orbit Update
- Observations of almost-small asteroids (21.7<H<=22.0)
- K10A60O 2010 AO60 (arc=21 days, H=21.8 ~148m) from the Catalina Sky Survey (CSS) (Feb. 5.13-17p9)
- Observations of other objects
- K10B03T 2010 BT3 (Q=4.012 AU, arc=13 days, H=21.5 ~170m) from CSS (Feb. 5.28-29p3)
- K10B02H 2010 BH2 (arc=18 days, H=19.5 ~426m) from Tenagra II Obs. (Feb. 5.14-15p3)
- K09U03N 2009 UN3 (i=37.4°, arc=109 days, H=17.8 ~933m) from Tzec Maun Obs. Moorook (Jan. 31.68-69p2 & Feb. 5.73-75p5)
- K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from Tenagra II Obs. (Feb. 5.10p2)
- K07U03R 2007 UR3 (arc=3 opp, H=21.2 ~195m) from CSS (Feb. 5.13-17p10)
- K07C26N 2007 CN26 (arc=2 opp, H=21.1 ~204m) from the Spacewatch 1.8m telescope (Feb. 5.42-44p3 at V=22.3-6)
- K06BE8A 2006 BA148 (arc=3 opp, H=18.4 ~708m) from CSS (Feb. 5.20-21p3)
- J94C00B 1994 CB (arc=3 opp, H=21.0 ~214m) from CSS (Feb. 5.13-16p6)
- H2722 172722 2004 BV102 from the Spacewatch 0.9m telescope (Feb. 5.41-45p3)
- 01627 1627 Ivar (1929 SH) from Spacewatch 0.9m (Feb. 5.41-45p3)
Observers on 6 February '10
Five observing facilities appear in today's MPEC.
| Code | Observer / observatory |
|---|---|
| 703 | Catalina Sky Survey (CSS) in Arizona, 5 in MPEC 2010-C17 -- 2010 BT3, 2010 AO60, 2007 UR3, 2006 BA148, 1994 CB |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-C17 -- 172722, 1627 |
| 291 | Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-C17 -- 2007 CN26 |
| 926 | Tenagra II Obs. in Arizona, 2 in MPEC 2010-C17 -- 2010 BH2, 2009 KL2 |
| D96 | Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-C17 -- 2009 UN3 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 6 February '10
| 0000NNN000 Object | Risk Monitor | When Noted UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Today's Latest Risk Assessments |
| 2010 CA | JPL Sentry | 0158 | 2016-2101 | 122 | 4.8e-06 | -4.50 | -5.05 | 0 | JPL: "Analysis based on 17 observations spanning .59399 days (2010-Feb-05.19638 to 2010-Feb-05.79037)." Diameter approximately 0.042 km. from mean, weighted H=24.5. |
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.
Chronology on 6 February '10
Times are UTC for when items were noted or added by The Tracking News.
| 1707 | Grabbed MPEC 2010-C17 - Daily Orbit Update - see above |
| 0158 | Noted that JPL Sentry has posted 2010 CA as an impact risk - see above |
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