2010-01-11 Tracking News

Contents on 11 January '10

IAU Minor Planet Center
- NEOCP Activity -- five listings: 3 new, 2 updated
- New MPECs -- eight MPECs
Observers -- sixteen 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 11 January '10

The MPC's NEO Confirmation Page has 5 listings: 3 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of eighteen 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 11 January '10

Minor Planet Electronic Circulars

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

MPEC 2010-A52 time-stamped "01:33 UT" - 2008 RH1 - see below
MPEC 2010-A53 time-stamped "07:11 UT" - Daily Orbit Update - see below
MPEC 2010-A54 time-stamped "14:37 UT" - 2010 AE30 - see below
MPEC 2010-A55 time-stamped "14:41 UT" - 2010 AF30 - see below
MPEC 2010-A56 time-stamped "14:54 UT" - 2010 AG30 - see below
MPEC 2010-A57 time-stamped "14:57 UT" - 2010 AH30 - see below
MPEC 2010-A58 time-stamped "15:02 UT" - 2010 AJ30 - see below
MPEC 2010-A59 time-stamped "15:43 UT" - 2010 AL30

MPEC 2010-A59 - "15:43 UT" - 2010 AL30

K10A30L 2010 AL30 (small asteroid, Earth MOID=0.0 LD, H=27.0 ~13m) was discovered at 0634 UT on 10 Jan. by LINEAR, which observed it at Jan. 10.27-32p5. The discovery was confirmed by the Mt. Lemmon Survey (MLS) (Jan. 11.29p5) and Grove Creek Obs. (Jan. 11.58-60p6). This object is now within ten lunar distances (LD) of Earth, reaching 0.3 LD on 13 Jan. (INTRUDER).

MPEC 2010-A58 - "15:02 UT" - 2010 AJ30

K10A30J 2010 AJ30 (small asteroid, H=22.5 ~107m) was discovered at 0558 UT on 10 Jan. by the Catalina Sky Survey (CSS), which observed it at Jan. 10.25-26p4. The discovery was confirmed by Sandlot Obs. (Jan. 10.29p4), McCarthy Obs. (Jan. 10.30p2), MLS (Jan. 10.34-35p5 & 11.18-19p4), Astronomical Research Obs. Westfield (ARO Westfield) (Jan. 10.38-39p3), Moriyama Obs. (Jan. 10.58-59p2), Hadano Obs. (Jan. 10.60-61p4), and New Millennium Obs. (Jan. 10.90p4).

MPEC 2010-A57 - "14:57 UT" - 2010 AH30

K10A30H 2010 AH30 (i=43.2°, H=18.4 ~708m) was discovered at 0555 UT on 10 Jan. by MLS, which observed it at Jan. 10.25-26p3, 10.37p4, and 11.26-27p5.

MPEC 2010-A56 - "14:54 UT" - 2010 AG30

K10A30G 2010 AG30 (small asteroid, Earth MOID=2.5 LD, H=27.0 ~13m) was discovered at 0553 UT on 10 Jan. by MLS, which observed it at Jan. 10.25-31p11, 11.28p4, and 11.33p3. This object will be coming within ten lunar distances (LD) of Earth, reaching 3.3 LD on 15 Jan.

MPEC 2010-A55 - "14:41 UT" - 2010 AF30

K10A30F 2010 AF30 (borderline-small, H=21.9 ~141m) was discovered at 0508 UT on 10 Jan. by MLS, which observed it at Jan. 10.21-24p5, 10.28p5, and 11.31-32p5. The discovery was confirmed by the Spacewatch 1.8m telescope (Jan. 11.34-35p2).

MPEC 2010-A54 - "14:37 UT" - 2010 AE30

K10A30E 2010 AE30 (risk-listed, Earth MOID=1.3 LD, H=23.3 ~74m) was discovered at 0455 UT on 10 Jan. by LINEAR, which observed it at Jan. 10.21-26p5. The discovery was confirmed by MLS (Jan. 11.28-29p5).

<< DOU on 11 Jan. '10 >> MPEC 2010-A53 - "07:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K09X00O 2009 XO (arc=32 days, H=20.5 ~269m) from ARO Westfield (Jan. 10.41p4 & 10.49-50p4)
K09W52R 2009 WR52 (small asteroid, arc=16 days, H=28.3 ~7m) from David Tholen's team on Mauna Kea (Dec. 9.29p2 at R=23.5-7)
Observations of recently (no longer) risk-listed objects
K10A01R 2010 AR1 (small asteroid, arc=3 days, H=25.8 ~23m) from ARO Westfield (Jan. 10.31-32p3)
K10A00K 2010 AK (arc=4 days, H=19.2 ~490m) from Desert Moon Obs. (Jan. 10.31-36p3)
K10A00J 2010 AJ (Q=4.563 AU, arc=4 days, H=20.1 ~323m) from the Spacewatch 0.9m telescope (Jan. 10.23-26p3) and ARO Westfield (Jan. 10.35-37p3)
K09Y06V 2009 YV6 (arc=21 days, H=20.8 ~234m) from Spacewatch 1.8m (Jan. 10.34p2)
K09Y00G 2009 YG (arc=24 days, H=18.6 ~645m) from ARO Westfield (Jan. 10.49-50p4)
K09X02F 2009 XF2 (arc=29 days, H=20.1 ~323m) from ARO Westfield (Jan. 10.12-13p3) and Desert Moon Obs. (Jan. 10.25-28p3)
Observations of small asteroids (H>22.0)
K10A03J 2010 AJ3 (arc=2 days, H=24.4 ~45m) from ARO Westfield (Jan. 10.44-45p4)
K10A03E 2010 AE3 (arc=2 days, H=23.7 ~62m) from LINEAR (Jan. 10.27-33p5) and ARO Westfield (Jan. 10.31-32p5)
K10A02O 2010 AO2 (arc=3 days, H=22.5 ~107m) from ARO Westfield (Jan. 10.32-33p3)
K10A02L 2010 AL2 (arc=3 days, H=26.6 ~16m) from ARO Westfield (Jan. 10.34p4)
K10A00L 2010 AL (arc=4 days, H=22.4 ~112m) from Spacewatch 1.8m (Jan. 10.38-39p2) and ARO Westfield (Jan. 10.42-43p3)
Observations of other objects
K10A00E 2010 AE (arc=5 days, H=19.5 ~426m) from ARO Westfield (Jan. 10.37-38p4) and Desert Moon Obs. (Jan. 10.39p2)
K09W07Z 2009 WZ7 (arc=52 days, H=19.8 ~371m) from ARO Westfield (Jan. 10.13-15p3 at V=21.9-22.2)
K09V24O 2009 VO24 (arc=60 days, H=19.7 ~389m) from ARO Westfield (Jan. 10.04-05p3)
K09K04N 2009 KN4 (arc=2 opp, H=18.3 ~741m) from MLS (Jan. 10.12-14p5)
K09K03C 2009 KC3 (Q=5.447 AU, arc=2 opp, H=18.0 ~851m) from ARO Westfield (Jan. 10.07-10p3 at V=21.9-22.3)
K08G00D 2008 GD (q=0.267 AU, arc=3 opp, H=19.7 ~389m) from ARO Westfield (Jan. 10.46-48p3 at V=22.0-22.2)
K07M13K 2007 MK13 (arc=3 opp, H=20.0 ~339m) from Hamamatsu-Yuto Obs. (Jan. 10.56-60p6) and Atlante Obs. (Jan. 10.90-92p3)
K05M00C 2005 MC (Q=4.167 AU, arc=3 opp, H=16.6 ~1.62 km) from Hamamatsu-Yuto Obs. (Jan. 10.62-65p7)
K04L02C 2004 LC2 (arc=3 opp, H=18.6 ~645m) from ARO Westfield (Jan. 10.42-46p3 at V=22.0-22.1)
K00WE8P 2000 WP148 (arc=5 opp, H=19.3 ~467m) from MLS (Jan. 10.08-09p5)
L5188 215188 2000 NM from LINEAR (Jan. 10.27-32p5)
G2273 162273 1999 VL12 from CSS (Jan. 10.11-13p4)
G2038 162038 1996 DH from LINEAR (Jan. 10.39-42p3)
F3201 153201 2000 WO107 from CSS (Jan. 10.26-28p4)
A3067 103067 1999 XA143 from Spacewatch 0.9m (Jan. 10.28-32p3)
35432 35432 1998 BG9 from LINEAR (Jan. 10.40-45p5)
05646 5646 1990 TR from Atlante Obs. (Jan. 10.94-95p3)
04486 4486 Mithra (1987 SB) from LINEAR (Jan. 10.40-45p5)

MPEC 2010-A52 - "01:33 UT" - 2008 RH1

K08R01H 2008 RH1 (small asteroid, H=22.6 ~102m) from Tholen team/Mauna Kea (2009 Aug. 12.32p2 at R=22.2, 2009 Sept. 8.27p1 & Dec. 9.24p1 at R=24.0)

Observers on 11 January '10

Sixteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 17 in MPECs 2010-A53 & 2010-A58 -- 2010 AR1, 2010 AO2, 2010 AL2, 2010 AL, 2010 AJ30, 2010 AJ3, 2010 AJ, 2010 AE3, 2010 AE, 2009 YG, 2009 XO, 2009 XF2, 2009 WZ7, 2009 VO24, 2009 KC3, 2008 GD, 2004 LC2
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2010-A53 -- 2007 MK13, 5646
`703`	Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2010-A53 & 2010-A58 -- 2010 AJ30, 162273, 153201
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2010-A53 -- 2010 AK, 2010 AE, 2009 XF2
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2010-A59 -- 2010 AL30
`355`	Hadano Obs. in Japan, 1 in MPEC 2010-A58 -- 2010 AJ30
`379`	Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2010-A53 -- 2007 MK13, 2005 MC
`704`	LINEAR in New Mexico, 7 in MPECs 2010-A53, 2010-A54 & 2010-A59 -- 2010 AL30, 2010 AE30, 2010 AE3, 35432, 215188, 162038, 4486
`5682`	David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-A52 & 2010-A53 -- 2009 WR52, 2008 RH1
`932`	McCarthy Obs. in Connecticut, 1 in MPEC 2010-A58 -- 2010 AJ30
`900`	Moriyama Obs. in Japan, 1 in MPEC 2010-A58 -- 2010 AJ30
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2010-A53, 2010-A54, 2010-A55, 2010-A56, 2010-A57, 2010-A58 & 2010-A59 -- 2010 AL30, 2010 AJ30, 2010 AH30, 2010 AG30, 2010 AF30, 2010 AE30, 2009 KN4, 2000 WP148
`A24`	New Millennium Obs. in Italy, 1 in MPEC 2010-A58 -- 2010 AJ30
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2010-A58 -- 2010 AJ30
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-A53 -- 2010 AJ, 103067
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2010-A53 & 2010-A55 -- 2010 AL, 2010 AF30, 2009 YV6

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

Impact Risk Monitoring on 11 January '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 AE30	JPL Sentry	1820	2017-2109	574	4.4e-06	-4.27	-5.01	0	JPL: "Analysis based on 10 observations spanning 1.0811 days (2010-Jan-10.20528 to 2010-Jan-11.28639)." Diameter approximately 0.077 km. from mean, weighted H=23.2.

2009 XO	JPL Sentry	1500	2038-2081	2	1.4e-07	-4.67	-4.92	0	JPL: "Analysis based on 194 observations spanning 32.351 days (2009-Dec-09.152 to 2010-Jan-10.503155)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
2009 XO	NEODyS	1500	2038-2086	4	1.44e-07	-4.66	-4.91	0	NEODyS: "Based on 194 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/10.504."

2009 WR52	NEODyS	1631	2031-2090	28	8.89e-05	-5.82	-5.94	0	NEODyS: "Based on 26 optical observations (of which 1 are rejected as outliers) from 2009/11/23.220 to 2009/12/09.291."
2009 WR52	JPL Sentry	1500	2031-2109	51	1.3e-04	-5.72	-5.91	0	JPL: "Analysis based on 25 observations spanning 16.072 days (2009-Nov-23.21917 to 2009-Dec-09.290725)." Diameter approximately 0.007 km. from mean, weighted H=28.3.

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 11 January '10

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

1820	Noted that JPL Sentry has posted 2010 AE30 as an impact risk - see above
1631	Noted that NEODyS has updated its 2009 WR52 risk assessment - see above
1607	Grabbed MPEC 2010-A58 - 2010 AJ30 - see above Grabbed MPEC 2010-A59 - 2010 AL30 - see above
1500	Noted that JPL Sentry has updated its 2009 WR52 risk assessment - see above 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-A53 - Daily Orbit Update - see above Grabbed MPEC 2010-A54 - 2010 AE30 - see above Grabbed MPEC 2010-A55 - 2010 AF30 - see above Grabbed MPEC 2010-A56 - 2010 AG30 - see above Grabbed MPEC 2010-A57 - 2010 AH30 - see above
0218	Grabbed MPEC 2010-A52 - 2008 RH1 - see above

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