2010-02-13 Tracking News

Contents on 13 February '10

IAU Minor Planet Center
- NEOCP Activity -- seven listings: 1 new, 6 updated
- New MPECs -- one MPEC
Observers -- eleven observing facilities
Impact Risk Monitoring -- three objects
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 13 February '10

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, two were "one nighters."

New MPECs on 13 February '10

Minor Planet Electronic Circulars

There was one MPEC posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 13 Feb. '10 >> MPEC 2010-C48 - "07:22 UT" - Daily Orbit Update

Observations of risk-listed objects
K10C01M 2010 CM1 (small asteroid, arc=2 days, H=25.3 ~29m) from Astronomical Research Obs. Westfield (ARO Westfield) (Feb. 11.27-28p3)
K10C00A 2010 CA (small asteroid, arc=7 days, H=24.6 ~41m) from ARO Westfield (Feb. 12.12-13p6)
Observations of recently (no longer) risk-listed objects
K10C01J 2010 CJ1 (small asteroid, arc=3 days, H=24.2 ~49m) from ARO Westfield (Feb. 11.24-26p3 & 12.29-30p3)
K10B02L 2010 BL2 (i=60.1°, arc=24 days, H=16.3 ~1.86 km) from Desert Moon Obs. (Feb. 12.09-14p3)
Observations of small asteroids (H>22.0)
K10C01K 2010 CK1 (arc=3 days, H=24.0 ~54m) from ARO Westfield (Feb. 11.23p4) and Doc Greiner Research Obs. (DGRO) (Feb. 12.21p3)
K10C00N 2010 CN (arc=6 days, H=23.5 ~68m) from ARO Westfield (Feb. 11.31p3 & 12.28-29p3)
K10A60L 2010 AL60 (arc=28 days, H=22.4 ~112m) from ARO Westfield (Feb. 11.06-08p3)
K09X02O 2009 XO2 (arc=61 days, H=23.5 ~68m) from ARO Westfield (Feb. 11.42-47p3 at V=22.6-23.1)
K02X38Y 2002 XY38 (arc=2 opp, H=23.0 ~85m) from Rio Cuarto Obs. (Feb. 13.05-07p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10B02K 2010 BK2 (arc=24 days, H=22.0 ~135m) from ARO Westfield (Feb. 11.13-14p4 & 12.17-18p3)
K10A60O 2010 AO60 (arc=27 days, H=21.8 ~148m) from ARO Westfield (Feb. 11.19-21p4)
Observations of other objects
K10C01N 2010 CN1 (arc=4 days, H=19.0 ~537m) from Tanti Obs. (Feb. 13.03-04p3)
K10C01L 2010 CL1 (arc=4 days, H=19.5 ~426m) from ARO Westfield (Feb. 11.30-31p3), Desert Moon Obs. (Feb. 12.26-29p3), and Rio Cuarto Obs. (Feb. 13.14-16p3)
K10B03T 2010 BT3 (arc=20 days, H=21.5 ~170m) from ARO Westfield (Feb. 11.22p3) and Desert Moon Obs. (Feb. 12.19-24p3)
K10B03C 2010 BC3 (Q=5.244 AU, arc=22 days, H=20.4 ~282m) from ARO Westfield (Feb. 11.49p3) and Desert Moon Obs. (Feb. 12.44-46p2)
K10B03B 2010 BB3 (arc=23 days, H=20.3 ~295m) from ARO Westfield (Feb. 11.34-35p3), DGRO (Feb. 12.18p3 & 13.08p3), and Bigmuskie Obs. (Feb. 12.97-98p3)
K10B02H 2010 BH2 (arc=24 days, H=19.5 ~426m) from ARO Westfield (Feb. 11.10p2)
K10B00B 2010 BB (arc=28 days, H=20.0 ~339m) from ARO Westfield (Feb. 12.05p3) and the Spacewatch 1.8m telescope (Feb. 13.13-14p3)
K10A30F 2010 AF30 (arc=32 days, H=21.4 ~178m) from ARO Westfield (Feb. 11.03-07p3)
K09X02C 2009 XC2 (Q=4.188 AU, arc=63 days, H=17.0 ~1.35 km) from WISE (Feb. 10.35p1, 10.55p1, 10.62p1, 10.69p1, 10.75p1, 10.82p1, 10.88p1, 10.95p1, 11.02p1, 11.08p1, 11.21p2, 11.28p1, 11.35p1, 11.61p1 & 11.74p1) and Desert Moon Obs. (Feb. 12.48-49p3)
K09X02B 2009 XB2 (arc=63 days, H=20.3 ~295m) from ARO Westfield (Feb. 12.07-10p3)
K09U03N 2009 UN3 (i=37.4°, arc=116 days, H=18.3 ~741m) from DGRO (Feb. 12.22p9)
K09U02W 2009 UW2 (arc=144 days, H=20.1 ~323m) from ARO Westfield (Feb. 11.16-17p3)
K07G49D 2007 GD49 (arc=3 opp, H=16.8 ~1.48 km) from ARO Westfield (Feb. 12.33-37p3 at V=22.7-23.0)
K07DA3T 2007 DT103 (arc=2 opp, H=19.2 ~490m) from ARO Westfield (Feb. 12.18-23p3 at V=22.7-23.2)
K05W02R 2005 WR2 (arc=4 opp, H=19.3 ~467m) from ARO Westfield (Feb. 12.20-24p3 at V=21.9-22.5)
K05W01D 2005 WD1 (i=43.1°, arc=4 opp, H=16.7 ~1.55 km) from ARO Westfield (Feb. 11.41-45p3 at V=21.8-22.2)
K05T51Y 2005 TY51 (Q=4.048 AU, arc=2 opp, H=17.7 ~977m) from Bigmuskie Obs. (Feb. 12.85-90p3)
K05T45P 2005 TP45 (arc=3 opp, H=20.9 ~224m) from ARO Westfield (Feb. 12.26-30p3 at V=22.1-3)
K05R06Q 2005 RQ6 (arc=2 opp, H=18.9 ~562m) from ARO Westfield (Feb. 12.14-16p3)
K04X50D 2004 XD50 (arc=2 opp, H=18.5 ~676m) from DGRO (Feb. 13.10-11p5)
K04RA9Y 2004 RY109 (arc=4 opp, H=19.0 ~537m) from ARO Westfield (Feb. 11.36-39p4)
K02C58Y 2002 CY58 (arc=2 opp, H=21.0 ~214m) from NEAT's Mt. Palomar telescope (2002 Feb. 13.37-40p3 & 2002 Feb. 14.38-41p3)
K02AC9J 2002 AJ129 (q=0.117 AU, arc=3 opp, H=18.5 ~676m) from Bigmuskie Obs. (Feb. 12.99-00p3)
K01X88P 2001 XP88 (arc=4 opp, H=20.6 ~257m) from ARO Westfield (Feb. 11.31-34p3 at V=21.9-22.1)
K01P09T 2001 PT9 (arc=2 opp, H=20.5 ~269m) from Bigmuskie Obs. (Feb. 13.00-01p3)
K01H04A 2001 HA4 (Q=4.817 AU, arc=3 opp, H=17.6 ~1.02 km) from David Tholen's team on Mauna Kea (Jan. 18.65p1)
K01F32O 2001 FO32 (i=38.9°, q=0.295 AU, arc=4 opp, H=17.7 ~977m) from Desert Moon Obs. (Feb. 12.50-53p4)
K00J10N 2000 JN10 (arc=4 opp, H=17.8 ~933m) from ARO Westfield (Feb. 11.36-39p3 at V=21.7-22.3)
N0549 230549 2003 BH from Bigmuskie Obs. (Feb. 12.93-96p3)
G1995 161995 1983 LB from ARO Westfield (Feb. 12.34-36p3 at V=21.7-22.2)
86067 86067 1999 RM28 from Capannoli Obs. (Feb. 12.94-95p3)
01627 1627 Ivar (1929 SH) from Capannoli Obs. (Feb. 12.92p2)

Observers on 13 February '10

Eleven observing facilities appeared in this day's MPEC.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 28 in MPEC 2010-C48 -- 2010 CN, 2010 CM1, 2010 CL1, 2010 CK1, 2010 CJ1, 2010 CA, 2010 BT3, 2010 BK2, 2010 BH2, 2010 BC3, 2010 BB3, 2010 BB, 2010 AO60, 2010 AL60, 2010 AF30, 2009 XO2, 2009 XB2, 2009 UW2, 2007 GD49, 2007 DT103, 2005 WR2, 2005 WD1, 2005 TP45, 2005 RQ6, 2004 RY109, 2001 XP88, 2000 JN10, 161995
`B88`	Bigmuskie Obs. in Italy, 5 in MPEC 2010-C48 -- 2010 BB3, 2005 TY51, 2002 AJ129, 2001 PT9, 230549
`B09`	Capannoli Obs. in Italy, 2 in MPEC 2010-C48 -- 86067, 1627
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2010-C48 -- 2010 CL1, 2010 BT3, 2010 BL2, 2010 BC3, 2009 XC2, 2001 FO32
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 4 in MPEC 2010-C48 -- 2010 CK1, 2010 BB3, 2009 UN3, 2004 XD50
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-C48 -- 2001 HA4
`644`	NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-C48 -- 2002 CY58
`I20`	Rio Cuarto Obs. in Argentina, 2 in MPEC 2010-C48 -- 2010 CL1, 2002 XY38
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-C48 -- 2010 BB
`I19`	Tanti Obs. in Argentina, 1 in MPEC 2010-C48 -- 2010 CN1
`C51`	WISE in Earth polar orbit, 1 in MPEC 2010-C48 -- 2009 XC2

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

Impact Risk Monitoring on 13 February '10

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2358 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

2010 CM1	NEODyS	2007	R E M O V E D						-

2010 CA	NEODyS	2007	2022	2	2.4e-05	-3.72	-3.72	0	NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2010/02/05.197 to 2010/02/12.133."

2001 WN5	NEODyS	1818	2106-2133	4	1.21e-04	-1.12	-1.12	0	NEODyS: "Based on 123 optical observations (of which 7 are rejected as outliers) from 1996/02/10.397 to 2010/02/11.484."
2001 WN5	JPL Sentry	1522	2133	1	1.0e-04	-1.18	-1.18	-	"Analysis based on 119 observations spanning 5115.1 days (1996-Feb-10.39593 to 2010-Feb-11.48277)." Diameter approximately 0.780 km. from mean, weighted H=18.2.

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 13 February '10

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

0510 2/16	Grabbed MPEC 2010-C48 - Daily Orbit Update - see above
2007	Noted that NEODyS has updated its 2010 CA risk assessment - see above Noted that NEODyS has removed 2010 CM1 as an impact risk - see above
1818	Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
0207	Noted that JPL Sentry has updated its 153814 2001 WN5 risk assessment - see above

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