2010-09-01 Tracking News

Contents on 1 September '10

IAU Minor Planet Center
- NEOCP Activity -- three listings: 3 updated
- New MPECs -- four MPECs
Observers -- nineteen observing facilities
Impact Risk Monitoring -- three objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Of 321 risk-listed objects, 12 have had news in the last 31 days. Updated at 1511 UTC.
Earth's Busy Neighborhood Traffic Report
One object is known to be within ten LD of Earth today. Updated at 2303 UTC.
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 1 September '10

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2330 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three updated listings. Of these, two were "one nighters." 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 1 September '10

Minor Planet Electronic Circulars

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

MPEC 2010-R01 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2010-R02 time-stamped "16:16 UT" - 2009 ME9 - see below
MPEC 2010-R03 time-stamped "22:30 UT" - 2010 QG2 - see below
MPEC 2010-R04 time-stamped "22:32 UT" - 2010 RA

MPEC 2010-R04 - "22:32 UT" - 2010 RA

K10R00A 2010 RA (small asteroid, Q=4.023 AU, H=23.0 ~85m) was discovered at 0927 UT on 1 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 1.39-45p12. The discovery was confirmed by Bisei Spaceguard Center (Sept. 1.68-70p15), Sormano Obs. (Sept. 1.82p4), Eschenberg Obs. (Sept. 1.85p3), Castelmartini Obs. (Sept. 1.86-89p8), Great Shefford Obs. (Sept. 1.89-90p3), and Hagen Obs. (Sept. 1.91-92p3).

MPEC 2010-R03 - "22:30 UT" - 2010 QG2

K10Q02G 2010 QG2 (risk-listed, Earth MOID=0.6 LD, H=24.0 ~54m) was discovered at 0853 UT on 31 Aug. by LINEAR, which observed it at Aug. 31.37-39p3 and Sept. 1.36-40p4. The discovery was confirmed by Sormano Obs. (Sept. 1.92-93p3). This object is now within ten lunar distances (LD) of Earth, reaching 4.7 LD on 4 Sept.

MPEC 2010-R02 - "16:16 UT" - 2009 ME9

K09M09E 2009 ME9 (H=21.3 ~186m) from Astronomical Research Obs. Westfield (Aug. 29.09p1 at V=22.9, 31.12-14p3 at V=22.2-5 & Sept. 1.10-15p3 at V=22.3-5)

<< DOU on 1 Sept. '10 >> MPEC 2010-R01 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K10P65S 2010 PS65 (small asteroid, Q=4.650 AU, arc=18 days, H=24.7 ~39m) from ARO Westfield (Aug. 31.27-33p3 at V=21.7-22.1)
Observations of small asteroids (H>22.0)
K10P57D 2010 PD57 (arc=21 days, H=22.6 ~102m) from ARO Westfield (Aug. 31.15-18p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10O00B 2010 OB (Q=4.386 AU, arc=44 days, H=21.9 ~141m) from ARO Westfield (Aug. 31.35-38p3)
Observations of other objects
K10P75Y 2010 PY75 (Q=4.691 AU, arc=16 days, H=18.7 ~616m) from Wishing Star Obs. (Aug. 31.05-07p3)
K10OA1N 2010 ON101 (arc=32 days, H=20.5 ~269m) from the Spacewatch 1.8m telescope (Sept. 1.22-23p3)
K10OA1F 2010 OF101 (arc=40 days, H=19.5 ~426m) from Spacewatch 1.8m (Sept. 1.20-21p3)
K10O22E 2010 OE22 (Q=4.312 AU, arc=45 days, H=21.5 ~170m) from ARO Westfield (Aug. 31.16-18p3)
K10NB7W 2010 NW117 (arc=54 days, H=18.1 ~812m) from Wishing Star Obs. (Aug. 31.12-15p3)
K10N01T 2010 NT1 (i=39.5°, arc=59 days, H=19.4 ~446m) from Spacewatch 1.8m (Sept. 1.18-19p3)
K10M87R 2010 MR87 (arc=70 days, H=19.3 ~467m) from ARO Westfield (Aug. 31.12-14p3)
K10M01F 2010 MF1 (arc=74 days, H=19.7 ~389m) from Stia Obs. (Aug. 30.81-82p3), ARO Westfield (Aug. 31.05-06p5), Wishing Star Obs. (Aug. 31.10p3), GiaGa Obs. (Aug. 31.86-88p2), and Santa Mama Obs. (Aug. 31.90-92p5)
K10H33D 2010 HD33 (arc=134 days, H=18.3 ~741m) from Spacewatch 1.8m (Sept. 1.15-16p3)
K10G07S 2010 GS7 (Q=4.477 AU, arc=146 days, H=21.5 ~170m) from ARO Westfield (Aug. 31.21-25p3 at V=22.2-5)
K10E20H 2010 EH20 (arc=177 days, H=18.0 ~851m) from the Siding Spring Survey (SSS) (Aug. 30.49-51p4)
K09C05Q 2009 CQ5 (arc=2 opp, H=17.6 ~1.02 km) from Santa Mama Obs. (Aug. 31.81-82p5)
K07VI9G 2007 VG189 (arc=2 opp, H=19.3 ~467m) from Wishing Star Obs. (Aug. 31.03-04p3) and Santa Mama Obs. (Aug. 31.83-86p5)
K07T18Y 2007 TY18 (arc=3 opp, H=17.9 ~891m) from LINEAR (Aug. 31.37-41p5)
K06K21L 2006 KL21 (arc=2 opp, H=20.9 ~224m) from SSS (Aug. 30.73-75p2)
K06B06N 2006 BN6 (Q=4.353 AU, arc=5 opp, H=17.4 ~1.12 km) from Naef Obs. (Aug. 31.85-86p2)
K05Q05C 2005 QC5 (arc=4 opp, H=19.7 ~389m) from SSS (Aug. 30.49-51p2)
K04F04U 2004 FU4 (arc=3 opp, H=18.4 ~708m) from SSS (Aug. 30.77-79p2)
K00P27Q 2000 PQ27 (arc=2 opp, H=19.8 ~371m) from Naef Obs. (Aug. 31.89-93p3)
N7442 237442 1999 TA10 from Stia Obs. (Aug. 30.85-88p3)
G1998 161998 1988 PA from LINEAR (Aug. 31.19-23p4) and Wishing Star Obs. (Sept. 1.01-03p3)
F2558 152558 1990 SA from Wishing Star Obs. (Aug. 31.08-09p3)
E3381 143381 2003 BC21 from Thompsonville Obs. (Sept. 1.14-15p6)
85989 85989 1999 JD6 from Kiev Comet Station (July 16.86-00p28)
07336 7336 Saunders (1989 RS1) from La Sagra Obs. (Aug. 30.84-86p3) and Thompsonville Obs. (Sept. 1.12-13p6)
05786 5786 Talos (1991 RC) from GiaGa Obs. (Aug. 31.87-89p2)
04055 4055 Magellan (1985 DO2) from Santa Mama Obs. (Aug. 31.88-89p5)

Observers on 1 September '10

Nineteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2010-R01 & 2010-R02 -- 2010 PS65, 2010 PD57, 2010 OE22, 2010 OB, 2010 MR87, 2010 MF1, 2010 GS7, 2009 ME9
`300`	Bisei Spaceguard Center in Japan, 1 in MPEC 2010-R04 -- 2010 RA
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2010-R04 -- 2010 RA
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2010-R04 -- 2010 RA
`203`	GiaGa Obs. in Italy, 2 in MPEC 2010-R01 -- 2010 MF1, 5786
`J95`	Great Shefford Obs. in England, 1 in MPEC 2010-R04 -- 2010 RA
`B86`	Hagen Obs. in Germany, 1 in MPEC 2010-R04 -- 2010 RA
`585`	Kiev Comet Station in the Ukraine, 1 in MPEC 2010-R01 -- 85989
`704`	LINEAR in New Mexico, 3 in MPECs 2010-R01 & 2010-R03 -- 2010 QG2, 2007 TY18, 161998
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2010-R01 -- 7336
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-R04 -- 2010 RA
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2010-R01 -- 2006 BN6, 2000 PQ27
`B38`	Santa Mama Obs. in Italy, 4 in MPEC 2010-R01 -- 2010 MF1, 2009 CQ5, 2007 VG189, 4055
`E12`	Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2010-R01 -- 2010 EH20, 2006 KL21, 2005 QC5, 2004 FU4
`587`	Sormano Obs. in Italy, 2 in MPECs 2010-R03 & 2010-R04 -- 2010 RA, 2010 QG2
`291`	Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2010-R01 -- 2010 ON101, 2010 OF101, 2010 NT1, 2010 HD33
`A78`	Stia Obs. in Italy, 2 in MPEC 2010-R01 -- 2010 MF1, 237442
`H53`	Thompsonville Obs. in Illinois, 2 in MPEC 2010-R01 -- 143381, 7336
`I15`	Wishing Star Obs. in Rhode Island, 6 in MPEC 2010-R01 -- 2010 PY75, 2010 NW117, 2010 MF1, 2007 VG189, 161998, 152558

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

Impact Risk Monitoring on 1 September '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. Both also post impact solutions beyond 100 years for a few special 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 QG2	JPL Sentry	2359	2051-2065	14	2.6e-05	-4.04	-4.44	0	JPL: "Analysis based on 10 observations spanning 1.5557 days (2010-Aug-31.37082 to 2010-Sep-01.92655)." Diameter approximately 0.053 km. from mean, weighted H=24.0.

2010 QE2	NEODyS	1511	2043	1	7.65e-11	-5.52	-5.52	0	NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2010/08/25.193 to 2010/08/31.794."

2010 PS65	JPL Sentry	1511	2102	1	1.0e-06	-6.14	-6.14	0	JPL: "Analysis based on 38 observations spanning 18.033 days (2010-Aug-13.29423 to 2010-Aug-31.327429)." Diameter approximately 0.040 km. from mean, weighted H=24.6.

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 1 September '10

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

2359	Noted that JPL Sentry has posted 2010 QG2 as an impact risk - see above
2300	Grabbed MPEC 2010-R03 - 2010 QG2 - see above Grabbed MPEC 2010-R04 - 2010 RA - see above
1747	Grabbed MPEC 2010-R02 - 2009 ME9 - see above
1511	Noted that JPL Sentry has updated its 2010 PS65 risk assessment - see above Noted that NEODyS has posted 2010 QE2 as an impact risk - see above Grabbed MPEC 2010-R01 - Daily Orbit Update - see above

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