2010-01-03 Tracking News

Contents on 3 January '10

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- two MPECs
Observers -- seven 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 3 January '10

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs on 3 January '10

Minor Planet Electronic Circulars

As of last check at 2341 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-A10 time-stamped "07:09 UT" - Daily Orbit Update - see below
MPEC 2010-A11 time-stamped "19:59 UT" - 2009 FT

MPEC 2010-A11 - "19:59 UT" - 2009 FT

K09F00T 2009 FT (H=18.9 ~562m) from David Tholen's team on Mauna Kea (Nov. 1.59-60p3 at R=22.1-4 & Dec. 9.48-49p2 at R=21.8-9)

<< DOU on 3 Jan. '10 >> MPEC 2010-A10 - "07:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K09X00O 2009 XO (arc=24 days, H=20.3 ~295m) from Desert Moon Obs. (Jan. 2.27p3)
Observations of recently (no longer) risk-listed objects
K09X02F 2009 XF2 (arc=20 days, H=20.1 ~323m) from Desert Moon Obs. (Jan. 1.26-30p3)
Observations of other objects
K09W26C 2009 WC26 (arc=40 days, H=17.3 ~1.17 km) from Desert Moon Obs. (Jan. 1.19-23p3)
K09W06O 2009 WO6 (Q=4.882 AU, arc=75 days, H=17.3 ~1.17 km) from Desert Moon Obs. (Jan. 1.10-13p3)
K08Y32Z 2008 YZ32 (arc=2 opp, H=20.2 ~309m) from H. Sato via RAS Obs. Mayhill (Jan. 1.44p2) and Great Shefford Obs. (Jan. 1.88-89p3)
K06Y02Y 2006 YY2 (arc=2 opp, H=17.8 ~933m) from Desert Moon Obs. (Jan. 2.47-51p3)
K05Y93Y 2005 YY93 (q=0.302 AU, Q=4.871 AU, arc=3 opp, H=17.2 ~1.23 km) from Naef Obs. (Jan. 2.75-78p2)
K05A42T 2005 AT42 (Q=4.606 AU, arc=4 opp, H=16.5 ~1.70 km) from Desert Moon Obs. (Jan. 2.43-45p3)
K03F01J 2003 FJ1 (arc=5 opp, H=17.7 ~977m) from Desert Moon Obs. (Jan. 2.18-22p3)
K03B47T 2003 BT47 (arc=4 opp, H=17.4 ~1.12 km) from Desert Moon Obs. (Jan. 2.33-39p3)
D8893 138893 2000 YH66 from Desert Moon Obs. (Jan. 2.24-25p2)
36284 36284 2000 DM8 from Castelmartini Obs. (Jan. 2.71p3)
24761 24761 Ahau (1993 BW2) from Desert Moon Obs. (Jan. 2.29-30p2)
12711 12711 Tukmit (1991 BB) from Castelmartini Obs. (Jan. 2.72p3)
11398 11398 1998 YP11 from Naef Obs. (Jan. 2.81-84p2)
09950 9950 ESA (1990 VB) from Desert Moon Obs. (Jan. 1.07-09p5)
04015 4015 Wilson-Harrington (1979 VA) from Gualba Obs. (Jan. 1.74p3)
03552 3552 Don Quixote (1983 SA) from Desert Moon Obs. (Jan. 1.05-06p5)

Observers on 3 January '10

Seven observing facilities appear in today's MPECs.

Code	Observer / observatory
`160`	Castelmartini Obs. in Italy, 2 in MPEC 2010-A10 -- 36284, 12711
`448`	Desert Moon Obs. in New Mexico, 12 in MPEC 2010-A10 -- 2009 XO, 2009 XF2, 2009 WO6, 2009 WC26, 2006 YY2, 2005 AT42, 2003 FJ1, 2003 BT47, 24761, 138893, 9950, 3552
`J95`	Great Shefford Obs. in England, 1 in MPEC 2010-A10 -- 2008 YZ32
`442`	Gualba Obs. in Spain, 1 in MPEC 2010-A10 -- 4015
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-A11 -- 2009 FT
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2010-A10 -- 2005 YY93, 11398
`H06\|`	H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-A10 -- 2008 YZ32

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 3 January '10

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2341 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
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

2009 XO	JPL Sentry	1702	2038	1	2.8e-07	-4.03	-4.03	0	JPL: "Analysis based on 128 observations spanning 24.120 days (2009-Dec-09.152 to 2010-Jan-02.2724)." Diameter approximately 0.300 km. from mean, weighted H=20.3.
2009 XO	NEODyS	1702	2038	1	2.72e-07	-4.03	-4.03	0	NEODyS: "Based on 128 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/02.273."

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 3 January '10

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

2322	Noted that the NEOCP has become empty
2203	Noted that the NEOCP has become active
2000	Grabbed MPEC 2010-A11 - 2009 FT - see above
1702	Noted that JPL Sentry has updated its 2009 XO risk assessment - see above Noted that NEODyS has updated its 2009 XO risk assessment - see above Grabbed MPEC 2010-A10 - Daily Orbit Update - see above

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