2010-03-09 Tracking News

Contents on 9 March '10

IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 updated
- New MPECs -- nine MPECs
Observers -- eighteen 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 9 March '10

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. So far The Tracking News has counted a total of seven 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 9 March '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been nine MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-E27 time-stamped "04:56 UT" - 2010 DW1 - see below
MPEC 2010-E28 time-stamped "07:07 UT" - Daily Orbit Update - see below
MPEC 2010-E29 time-stamped "12:30 UT" - 2010 DG77 - see below
MPEC 2010-E30 time-stamped "12:33 UT" - 2010 DH77 - see below
MPEC 2010-E31 time-stamped "12:35 UT" - 2010 DJ77 - see below
MPEC 2010-E32 time-stamped "13:42 UT" - 2010 EK12 - see below
MPEC 2010-E33 time-stamped "14:08 UT" - 2007 HD70 - see below
MPEC 2010-E34 time-stamped "18:24 UT" - Comet C/2010 D3 (WISE) - see below
MPEC 2010-E35 time-stamped "20:37 UT" - 2009 XR2

MPEC 2010-E35 - "20:37 UT" - 2009 XR2

K09X02R 2009 XR2 (H=19.0 ~537m) from NEAT's USAF Haleakala telescope (2000 Dec. 2.66p1 & 2000 Dec. 30.58-60p3)

MPEC 2010-E34 - "18:24 UT" - Comet C/2010 D3 (WISE)

CK10D030 C/2010 D3 (WISE) (i=76.4°, q=4.236 AU, TP=2010 Sept. 2.349 TT) from WISE (Feb. 26.52p1, 26.66p1, 26.79p1, 27.18p1, 27.71p1, 28.11p1, 28.24p2, 28.51p1, 28.64p1, 28.77p1 & 28.90p1) and the Siding Spring Survey (SSS) (March 8.44-46p4 & 9.43-46p2)

MPEC 2010-E33 - "14:08 UT" - 2007 HD70

K07H70D 2007 HD70 (H=20.9 ~224m) from the Spacewatch 0.9m telescope (Feb. 17.22-24p2) and Tenagra II Obs. (March 3.14-16p2 & 9.20-23p3)

MPEC 2010-E32 - "13:42 UT" - 2010 EK12

K10E12K 2010 EK12 (H=17.8 ~933m) was discovered at 1459 UT on 8 March by SSS, which observed it at Jan. 19.70-73p4 and March 8.62-65p3. The discovery was confirmed by Grove Creek Obs. (March 9.47-48p3 & 9.54p1).

MPEC 2010-E31 - "12:35 UT" - 2010 DJ77

K10D77J 2010 DJ77 (small asteroid, H=22.3 ~117m) was discovered at 1159 UT on 20 Feb. by WISE, which observed it at Feb. 20.50p1, 20.63p1, 20.70p1, 20.76p1, 20.83p1, 21.23p1, 21.29p1, and 21.36p1.

MPEC 2010-E30 - "12:33 UT" - 2010 DH77

K10D77H 2010 DH77 (Q=4.051 AU, H=20.1 ~323m) was discovered at 0755 UT on 19 Feb. by WISE, which observed it at Feb. 19.33p1, 19.46p1, 19.59p1, 19.66p1, 19.73p1, 19.79p2, and 20.19p1.

MPEC 2010-E29 - "12:30 UT" - 2010 DG77

K10D77G 2010 DG77 (risk-listed, Earth MOID=2.4 LD, H=23.3 ~74m) was discovered at 0413 UT on 19 Feb. by WISE, which observed it at Feb. 19.18p1, 19.24p1, 19.31p1, 19.64p1, 19.71p1, and 19.77p1.

<< DOU on 9 Mar. '10 >> MPEC 2010-E28 - "07:07 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K10D01W 2010 DW1 (arc=2 opp, H=20.0 ~339m) from Astronomical Research Obs. Westfield (ARO Westfield) (March 5.46-47p3)
Observations of small asteroids (H>22.0)
K10C55C 2010 CC55 (arc=22 days, H=22.1 ~129m) from David Tholen's team on Mauna Kea (March 5.61-62p2)
K10C00N 2010 CN (arc=26 days, H=23.4 ~71m) from ARO Westfield (March 4.16-19p3)
K00R52E 2000 RE52 (arc=2 opp, H=22.3 ~117m) from Grove Creek Obs. (March 8.47p3)
Observations of other objects
K10D34B 2010 DB34 (arc=13 days, H=19.1 ~513m) from ARO Westfield (March 4.23-24p3 & 5.25-27p3)
K10D01X 2010 DX1 (Q=4.420 AU, arc=16 days, H=21.6 ~162m) from ARO Westfield (March 4.14-15p3 & 5.21-22p3)
K10C44M 2010 CM44 (arc=23 days, H=19.3 ~467m) from Schiaparelli Obs. (March 5.08p2 & 5.15-16p2), ARO Westfield (March 5.33-35p3), and Petit Jean Mtn. South Obs. (PJMSO) (March 8.42p6)
K10C18L 2010 CL18 (Q=4.193 AU, arc=22 days, H=18.4 ~708m) from ARO Westfield (March 5.38-39p4)
K10C01R 2010 CR1 (q=0.366 AU, arc=2 opp, H=18.4 ~708m) from ARO Westfield (March 5.23-25p3)
K10C01L 2010 CL1 (arc=25 days, H=19.5 ~426m) from ARO Westfield (March 4.12-14p3)
K10B03B 2010 BB3 (arc=44 days, H=20.3 ~295m) from ARO Westfield (March 5.27-28p3)
K09X02R 2009 XR2 (arc=82 days, H=19.0 ~537m) from ARO Westfield (March 5.15-16p2)
K09U18V 2009 UV18 (Q=5.187 AU, arc=2 opp, H=15.9 ~2.24 km, q=1.167 AU) from ARO Westfield (March 4.47-48p3)
K08J00F 2008 JF (arc=3 opp, H=17.9 ~891m) from ARO Westfield (March 8.23-26p3 at V=22.1-2)
K08G01E 2008 GE1 (arc=2 opp, H=19.3 ~467m) from Bergen-Enkheim Obs. (March 7.96-98p3)
K08E05Y 2008 EY5 (q=0.234 AU, arc=3 opp, H=20.1 ~323m) from Grove Creek Obs. (March 8.46-49p5)
K08E00E 2008 EE (arc=3 opp, H=19.8 ~371m) from Peschiera del Garda Obs. (March 8.95-97p3)
K07F42V 2007 FV42 (arc=4 opp, H=17.9 ~891m) from ARO Westfield (March 5.28-29p3)
K07E00F 2007 EF (arc=2 opp, H=21.4 ~178m) from Schiaparelli Obs. (March 5.12-13p5)
K06D14S 2006 DS14 (arc=3 opp, H=20.4 ~282m) from ARO Westfield (March 4.24-26p6)
K04T13R 2004 TR13 (arc=4 opp, H=18.4 ~708m) from Thompsonville Obs. (March 9.08-09p6)
K04H01O 2004 HO1 (arc=3 opp, H=18.2 ~776m) from ARO Westfield (March 8.25-26p2 at V=22.9-23.2)
K03H42S 2003 HS42 (arc=4 opp, H=20.2 ~309m) from ARO Westfield (March 4.36-38p3)
K02C26F 2002 CF26 (arc=6 opp, H=17.2 ~1.23 km) from Herrenberg Obs. (March 8.87-88p3)
K00W19Q 2000 WQ19 (arc=4 opp, H=18.2 ~776m) from ARO Westfield (March 5.34-37p3)
K00CA1O 2000 CO101 (arc=2 opp, H=19.1 ~513m) from Peschiera del Garda Obs. (March 8.86-89p5)
K00A06D 2000 AD6 (arc=4 opp, H=18.4 ~708m) from ARO Westfield (March 5.30-33p4)
L8863 218863 2006 WO127 from Peschiera del Garda Obs. (March 6.77-80p4 & 8.79-83p4) and Thompsonville Obs. (March 9.06-07p6)
G3132 163132 2002 CU11 from Herrenberg Obs. (March 8.84-85p7)
G2882 162882 2001 FD58 from Cyclops Obs. (March 6.86-91p5)
F2978 152978 2000 GJ147 from Bergen-Enkheim Obs. (March 8.03-17p5)
90367 90367 2003 LC5 from Cyclops Obs. (March 7.82-87p6)
68216 68216 2001 CV26 from ARO Westfield (March 5.44-46p4) and Velikie Luki Obs. (March 7.86-89p3)
54789 54789 2001 MZ7 from Peschiera del Garda Obs. (March 6.85-92p4), Cyclops Obs. (March 6.92p3), El Maestrat Obs. (March 8.84-87p9), and Thompsonville Obs. (March 9.10-12p6)
04486 4486 Mithra (1987 SB) from Schiaparelli Obs. (March 5.11-17p3)

MPEC 2010-E27 - "04:56 UT" - 2010 DW1

K10D01W 2010 DW1 (Earth MOID=3.1 LD, H=20.0 ~339m) from NEAT's Mt. Palomar telescope (2002 Aug. 29.49-52p3, 2002 Sept. 9.41-44p2 & 2002 Sept. 17.18-25p3) and NEAT/Hawaii (2002 Sept. 8.46-48p3 & 2002 Sept. 13.41-42p2)

Observers on 9 March '10

Eighteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 19 in MPEC 2010-E28 -- 2010 DX1, 2010 DW1, 2010 DB34, 2010 CR1, 2010 CN, 2010 CM44, 2010 CL18, 2010 CL1, 2010 BB3, 2009 XR2, 2009 UV18, 2008 JF, 2007 FV42, 2006 DS14, 2004 HO1, 2003 HS42, 2000 WQ19, 2000 AD6, 68216
`A74`	Bergen-Enkheim Obs. in Germany, 2 in MPEC 2010-E28 -- 2008 GE1, 152978
`B84`	Cyclops Obs. in The Netherlands, 3 in MPEC 2010-E28 -- 90367, 54789, 162882
`J19`	El Maestrat Obs. in Spain, 1 in MPEC 2010-E28 -- 54789
`E16`	Grove Creek Obs. in New South Wales, 3 in MPECs 2010-E28 & 2010-E32 -- 2010 EK12, 2008 EY5, 2000 RE52
`240`	Herrenberg Obs. in Germany, 2 in MPEC 2010-E28 -- 2002 CF26, 163132
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-E28 -- 2010 CC55
`644`	NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-E27 -- 2010 DW1
`608`	NEAT's USAF Haleakala telescope in Hawaii, 2 in MPECs 2010-E27 & 2010-E35 -- 2010 DW1, 2009 XR2
`A53`	Peschiera del Garda Obs. in Italy, 4 in MPEC 2010-E28 -- 2008 EE, 2000 CO101, 54789, 218863
`H45`	Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2010-E28 -- 2010 CM44
`204`	Schiaparelli Obs. in Italy, 3 in MPEC 2010-E28 -- 2010 CM44, 2007 EF, 4486
`E12`	Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2010-E32 & 2010-E34 -- 2010 EK12, C/2010 D3
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-E33 -- 2007 HD70
`926`	Tenagra II Obs. in Arizona, 1 in MPEC 2010-E33 -- 2007 HD70
`H53`	Thompsonville Obs. in Illinois, 3 in MPEC 2010-E28 -- 2004 TR13, 54789, 218863
`C00`	Velikie Luki Obs. in Russia, 1 in MPEC 2010-E28 -- 68216
`C51`	WISE in Earth polar orbit, 4 in MPECs 2010-E29, 2010-E30, 2010-E31 & 2010-E34 -- 2010 DJ77, 2010 DH77, 2010 DG77, C/2010 D3

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

Impact Risk Monitoring on 9 March '10

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2359 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 DG77	JPL Sentry	1601	2012-2108	847	2.0e-05	-4.45	-5.55	0	JPL: "Analysis based on 6 observations spanning .59543 days (2010-Feb-19.17573 to 2010-Feb-19.77116)." Diameter approximately 0.041 km. from mean, weighted H=24.6.

2010 CA	NEODyS	1601	2022	1	5.56e-06	-4.30	-4.30	0	NEODyS: "Based on 60 optical observations (of which 0 are rejected as outliers) from 2010/02/05.197 to 2010/02/14.098."

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 9 March '10

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

2142	Grabbed MPEC 2010-E35 - 2009 XR2 - see above
1926	Grabbed MPEC 2010-E34 - Comet C/2010 D3 (WISE) - see above
1601	Noted that NEODyS has updated its 2010 CA risk assessment - see above Noted that JPL Sentry has posted 2010 DG77 as an impact risk - see above Grabbed MPEC 2010-E28 - Daily Orbit Update - see above Grabbed MPEC 2010-E29 - 2010 DG77 - see above Grabbed MPEC 2010-E30 - 2010 DH77 - see above Grabbed MPEC 2010-E31 - 2010 DJ77 - see above Grabbed MPEC 2010-E32 - 2010 EK12 - see above Grabbed MPEC 2010-E33 - 2007 HD70 - see above
0639	Grabbed MPEC 2010-E27 - 2010 DW1 - see above

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