2010-03-08 Tracking News

Contents on 8 March '10

IAU Minor Planet Center
- NEOCP Activity -- six listings: 6 updated
- New MPECs -- three MPECs
Observers -- ten observing facilities
Impact Risk Monitoring -- two 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 8 March '10

The MPC's NEO Confirmation Page has 6 listings: 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six updated listings. So far The Tracking News has counted a total of nine 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.

New MPECs on 8 March '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-E24 time-stamped "02:02 UT" - 2007 PF6 - see below
MPEC 2010-E25 time-stamped "07:07 UT" - Daily Orbit Update - see below
MPEC 2010-E26 time-stamped "12:55 UT" - 2007 UB6

MPEC 2010-E26 - "12:55 UT" - 2007 UB6

K07U06B 2007 UB6 (H=19.6 ~407m) from Astronomical Research Obs. Westfield (ARO Westfield) (March 7.21-24p3 & 8.19-21p3)

<< DOU on 8 Mar. '10 >> MPEC 2010-E25 - "07:07 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K10D01W 2010 DW1 (arc=18 days, H=20.0 ~339m) from ARO Westfield (March 7.38-39p3)
K10D00P 2010 DP (i=36.5°, arc=19 days, H=18.5 ~676m) from ARO Westfield (March 7.36-37p3)
Observations of small asteroids (H>22.0)
K10E11X 2010 EX11 (arc=5 days, H=24.0 ~54m) from Great Shefford Obs. (March 8.09-10p3)
K10C55B 2010 CB55 (arc=26 days, H=22.5 ~107m) from ARO Westfield (March 7.15-18p3 at V=21.9-22.1)
K09U02D 2009 UD2 (arc=141 days, H=22.3 ~117m) from Atlante Obs. (March 8.01-03p3)
Observations of other objects
K10D01X 2010 DX1 (Q=4.420 AU, arc=16 days, H=21.6 ~162m) from ARO Westfield (March 7.20p2 & 7.26-27p3)
K10C55F 2010 CF55 (arc=20 days, H=21.6 ~162m) from Chabot Obs. (March 7.35-36p3)
K10C44M 2010 CM44 (arc=22 days, H=19.3 ~467m) from ARO Westfield (March 7.32-33p5)
K10C18L 2010 CL18 (Q=4.193 AU, arc=22 days, H=18.4 ~708m) from ARO Westfield (March 7.36-37p4)
K10C01R 2010 CR1 (q=0.366 AU, arc=2 opp, H=18.4 ~708m) from ARO Westfield (March 7.28-29p3)
K10B03C 2010 BC3 (Q=5.273 AU, arc=45 days, H=20.5 ~269m) from ARO Westfield (March 7.38-40p3)
K10A00J 2010 AJ (Q=4.549 AU, arc=60 days, H=20.2 ~309m) from ARO Westfield (March 7.12-18p3 at V=22.8-23.2)
K09X02C 2009 XC2 (Q=4.188 AU, arc=3 opp, H=17.0 ~1.35 km) from ARO Westfield (March 7.40-42p4)
K09U18V 2009 UV18 (Q=5.187 AU, arc=2 opp, H=15.9 ~2.24 km, q=1.167 AU) from ARO Westfield (March 7.43p4)
K09K05D 2009 KD5 (arc=3 opp, H=18.2 ~776m) from WISE (Feb. 25.64p1, 26.04p1, 26.31p1, 26.44p2, 26.57p1, 26.70p1, 26.83p1, 26.97p1, 27.17p1, 27.30p1, 27.56p1 & 27.69p1)
K08E05V 2008 EV5 (arc=3 opp, H=20.0 ~339m) from WISE (Feb. 26.64p1, 26.77p1, 26.90p1, 27.03p1, 27.16p1, 27.30p1, 27.56p1, 27.83p1, 27.96p1, 28.09p1, 28.22p1, 28.36p2, 28.62p1, 28.75p1, March 1.02p2, 1.15p1, 1.28p1, 1.55p1, 1.68p1, 1.81p1, 2.08p1, 2.21p1, 2.34p1, 3.00p1, 3.13p1, 3.27p1, 3.53p1, 3.66p2, 3.80p1, 4.19p1, 4.32p1, 4.46p1, 4.59p1, 4.79p1, 4.85p1, 4.92p1, 4.99p1, 5.05p1, 5.12p1, 5.19p1, 5.32p1 & 5.38p1)
K07B08M 2007 BM8 (q=0.375 AU, arc=4 opp, H=18.5 ~676m) from WISE (March 3.64p1, 3.77p1, 3.90p1, 4.50p1 & 4.63p1)
K04V00C 2004 VC (i=39.1°, arc=4 opp, H=18.8 ~589m) from WISE (Feb. 28.98p1, March 1.18p1, 1.31p1, 1.51p1 & 1.57p1)
K04F11G 2004 FG11 (arc=3 opp, H=21.0 ~214m) from ARO Westfield (March 7.31-34p3)
K02X04G 2002 XG4 (arc=3 opp, H=18.2 ~776m) from WISE (Feb. 28.17p1, 28.43p1, 28.56p1, 28.70p1, 28.76p1, 28.89p1, March 1.03p1, 1.09p1, 1.16p1, 1.22p1, 1.56p1 & 1.82p1)
K02C26F 2002 CF26 (arc=6 opp, H=17.2 ~1.23 km) from Mirasteilas Obs. (March 7.98-99p3)
K02AC9J 2002 AJ129 (q=0.117 AU, arc=3 opp, H=18.5 ~676m) from Herrenberg Obs. (March 7.83-85p4)
K01V76C 2001 VC76 (arc=3 opp, H=19.8 ~371m) from ARO Westfield (March 7.22-28p3 at V=22.8-23.1)
K00CA1O 2000 CO101 (arc=2 opp, H=19.1 ~513m) from Atlante Obs. (March 7.96-97p3)
J99R32C 1999 RC32 (arc=4 opp, H=18.4 ~708m) from Naef Obs. (March 7.88-90p2)
J96B01A 1996 BA1 (arc=2 opp, H=20.7 ~245m) from ARO Westfield (March 7.30-31p3)
H5706 175706 1996 FG3 from Naef Obs. (March 7.83-85p2)
G2882 162882 2001 FD58 from Chabot Obs. (March 7.33-34p3) and Herrenberg Obs. (March 7.79-81p5)
54789 54789 2001 MZ7 from Atlante Obs. (March 7.93-94p3)
35432 35432 1998 BG9 from Naef Obs. (March 7.92-94p2)
11066 11066 Sigurd (1992 CC1) from the Spaceguard Centre (March 8.00-01p3)
07822 7822 1991 CS from Herrenberg Obs. (March 7.78-79p6)
01862 1862 Apollo (1932 HA) from Herrenberg Obs. (March 7.87-88p3)

MPEC 2010-E24 - "02:02 UT" - 2007 PF6

K07P06F 2007 PF6 (H=20.7 ~245m) from David Tholen's team on Mauna Kea (2009 Oct. 18.49-51p3 at R=23.0-1 & 2009 Nov. 1.49p1 at R=22.5)

Observers on 8 March '10

Ten observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 15 in MPECs 2010-E25 & 2010-E26 -- 2010 DX1, 2010 DW1, 2010 DP, 2010 CR1, 2010 CM44, 2010 CL18, 2010 CB55, 2010 BC3, 2010 AJ, 2009 XC2, 2009 UV18, 2007 UB6, 2004 FG11, 2001 VC76, 1996 BA1
`J51`	Atlante Obs. in the Canary Islands, 3 in MPEC 2010-E25 -- 2009 UD2, 2000 CO101, 54789
`G58`	Chabot Obs. in northern California, 2 in MPEC 2010-E25 -- 2010 CF55, 162882
`J95`	Great Shefford Obs. in England, 1 in MPEC 2010-E25 -- 2010 EX11
`240`	Herrenberg Obs. in Germany, 4 in MPEC 2010-E25 -- 2002 AJ129, 162882, 7822, 1862
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-E24 -- 2007 PF6
`B67`	Mirasteilas Obs. in Switzerland, 1 in MPEC 2010-E25 -- 2002 CF26
`A13`	Naef Obs. in Switzerland, 3 in MPEC 2010-E25 -- 1999 RC32, 35432, 175706
`J26`	Spaceguard Centre in Wales, 1 in MPEC 2010-E25 -- 11066
`C51`	WISE in Earth polar orbit, 5 in MPEC 2010-E25 -- 2009 KD5, 2008 EV5, 2007 BM8, 2004 VC, 2002 XG4

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

Impact Risk Monitoring on 8 March '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 CS19	JPL Sentry	2108	2104	4	3.7e-05	-6.29	-6.32	0	JPL: "Analysis based on 43 observations spanning 4.0065 days (2010-Feb-15.32692 to 2010-Feb-19.333453)." Diameter approximately 0.009 km. from mean, weighted H=28.0.

2010 CA	JPL Sentry	2108	2022	1	5.3e-06	-4.32	-4.32	0	JPL: "Analysis based on 60 observations spanning 8.9008 days (2010-Feb-05.19638 to 2010-Feb-14.097229)." Diameter approximately 0.043 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 8 March '10

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

2108	Noted that JPL Sentry has updated its 2010 CA risk assessment - see above Noted that JPL Sentry has updated its 2010 CS19 risk assessment - see above
1531	Grabbed MPEC 2010-E25 - Daily Orbit Update - see above Grabbed MPEC 2010-E26 - 2007 UB6 - see above
0621	Grabbed MPEC 2010-E24 - 2007 PF6 - see above

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