2010-09-03 Tracking News

Spitzer Space Telescope artwork, credit NASA/JPL-Caltech/R. Hurt.

It was reported yesterday that, in the course of a "warm mode" program to survey NEO physical characteristics via infrared, the Spitzer Space Telescope (SST) has found "a surprisingly wide array of compositions" among the first 100 of 700 objects planned (about 10% of the known population). Artwork credit: NASA/JPL-Caltech/R. Hurt.

Contents on 3 September '10

IAU Minor Planet Center
- NEOCP Activity -- 17 listings: 2 new, 15 updated
- New MPECs -- twelve MPECs
Observers -- 29 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 3 September '10

The MPC's NEO Confirmation Page has 17 listings: 2 new, 15 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and fifteen updated listings. Of these, twelve were "one nighters." The Tracking News counted a total of 26 listings on the NEOCP at some point on this day.

New MPECs on 3 September '10

Minor Planet Electronic Circulars

There were twelve MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-R12 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2010-R13 time-stamped "15:35 UT" - 1997 GL3 - see below
MPEC 2010-R14 time-stamped "16:28 UT" - 2010 RS3 - see below
MPEC 2010-R15 time-stamped "16:32 UT" - 2010 RT3 - see below
MPEC 2010-R16 time-stamped "16:37 UT" - 2010 RU3 - see below
MPEC 2010-R17 time-stamped "16:45 UT" - 2010 RV3 - see below
MPEC 2010-R18 time-stamped "16:54 UT" - 2010 RW3 - see below
MPEC 2010-R19 time-stamped "17:03 UT" - 2010 RX3 - see below
MPEC 2010-R20 time-stamped "17:09 UT" - 2010 RY3 - see below
MPEC 2010-R21 time-stamped "18:51 UT" - Comet P/2010 L1 (WISE) - see below
MPEC 2010-R22 time-stamped "21:57 UT" - 2010 RJ4 - see below
MPEC 2010-R23 time-stamped "23:13 UT" - Comet P/2010 L1 = 2002 Q16 (WISE)

MPEC 2010-R23 - "23:13 UT" - Comet P/2010 L1 = 2002 Q16 (WISE)

PK10L010 P/2010 L1 (WISE) (q=2.140 AU, Q=5.875 AU, TP=2010 Feb. 4.57272 TT)
PK02Q160 P/2002 Q16 (q=2.149 AU, Q=5.889 AU, TP=2002 Jan. 19.70542 TT) from NEAT's Mt. Palomar telescope (2002 Aug. 27.46-48p3, 2002 Sept. 4.44-48p3, 2002 Sept. 11.34-39p3 & 2002 Sept. 12.26-32p3)

MPEC 2010-R22 - "21:57 UT" - 2010 RJ4

K10R04J 2010 RJ4 (small asteroid, H=24.0 ~54m) was discovered at 0606 UT on 3 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 3.25-27p4 and 3.39p4. The discovery was confirmed by Sabino Canyon Obs. (Sept. 3.34-35p3), the Spacewatch 1.8m telescope (Sept. 3.40-41p3), Terskol Obs. (Sept. 3.75-76p3), Eschenberg Obs. (Sept. 3.82p4), Great Shefford Obs. (Sept. 3.85-86p3), and Libbiano Obs. (Sept. 3.88-89p3).

MPEC 2010-R21 - "18:51 UT" - Comet P/2010 L1 (WISE)

PK10L010 P/2010 L1 (WISE) (q=2.140 AU, Q=5.876 AU, TP=2010 Feb. 4.57377 TT) from Schiaparelli Obs. (July 16.02p1 & 16.08p1) and MLS (Sept. 3.38-39p4)

MPEC 2010-R20 - "17:09 UT" - 2010 RY3

K10R03Y 2010 RY3 (risk-listed, Q=4.660 AU, Earth MOID=5.2 LD, H=25.0 ~34m) was discovered at 1049 UT on 2 Sept. by MLS, which observed it at Sept. 2.45-50p8 and 3.43p5. The discovery was confirmed by Spacewatch 1.8m (Sept. 3.32p2).

MPEC 2010-R19 - "17:03 UT" - 2010 RX3

K10R03X 2010 RX3 (risk-listed, Q=4.307 AU, Earth MOID=6.2 LD, H=25.0 ~34m) was discovered at 1045 UT on 2 Sept. by MLS, which observed it at Sept. 2.45-50p10 and 3.42p4. The discovery was confirmed by Great Shefford Obs. (Sept. 3.01-03p3).

MPEC 2010-R18 - "16:54 UT" - 2010 RW3

K10R03W 2010 RW3 (small asteroid, H=23.7 ~62m) was discovered at 0909 UT on 2 Sept. by MLS, which observed it at Sept. 2.38-41p8 at V=21.5-22.6 and 3.29-31p4 at V=21.8-22.3. The discovery was confirmed by Spacewatch 1.8m (Sept. 3.29-30p3 at V=22.2-4).

MPEC 2010-R17 - "16:45 UT" - 2010 RV3

K10R03V 2010 RV3 (small asteroid, q=0.259 AU, Q=4.071 AU, Earth MOID=2.6 LD, H=23.1 ~81m) was discovered at 0833 UT on 2 Sept. by MLS, which observed it at Sept. 2.36-41p7 at V=21.5-22.6 and 3.36-37p3 at V=21.2-5. The discovery was confirmed by Spacewatch 1.8m (Sept. 3.27-28p2 at V=22.4).

MPEC 2010-R16 - "16:37 UT" - 2010 RU3

K10R03U 2010 RU3 (small asteroid, H=26.6 ~16m) was discovered at 0657 UT on 2 Sept. by MLS, which observed it at Sept. 2.29-35p9 and 3.32p4.

MPEC 2010-R15 - "16:32 UT" - 2010 RT3

K10R03T 2010 RT3 (small asteroid, H=23.4 ~71m) was discovered at 0444 UT on 2 Sept. by MLS, which observed it at Sept. 2.20-26p8. The discovery was confirmed by Great Shefford Obs. (Sept. 2.90-91p3), Spacewatch 1.8m (Sept. 3.20-21p3), Farpoint Obs. (Sept. 3.27-28p4), and Sabino Canyon Obs. (Sept. 3.29-30p2).

MPEC 2010-R14 - "16:28 UT" - 2010 RS3

K10R03S 2010 RS3 (small asteroid, H=22.6 ~102m) was discovered at 0359 UT on 2 Sept. by MLS, which observed it at Sept. 2.17-19p4, 2.25-26p4, and 3.21-22p3. The discovery was confirmed by Chabot Obs. (Sept. 2.24p3), Inastars Obs. (Sept. 2.84-85p4), Great Shefford Obs. (Sept. 2.85-88p3), Remanzacco Obs. (Sept. 2.92-93p2), Spacewatch 1.8m (Sept. 3.18-19p3), Farpoint Obs. (Sept. 3.25-27p3), and Sabino Canyon Obs. (Sept. 3.26-27p2).

MPEC 2010-R13 - "15:35 UT" - 1997 GL3

J97G03L 1997 GL3 (Q=4.057 AU, Earth MOID=0.8 LD, H=19.3 ~467m) from La Sagra Obs. (Sept. 3.07-10p3 & 3.14-15p3), Great Shefford Obs. (Sept. 3.14p3), CEAMIG-REA (Sept. 3.17-18p3), Cordell-Lorenz Obs. (Sept. 3.26-31p3), Sabino Canyon Obs. (Sept. 3.38p3), Farpoint Obs. (Sept. 3.39p4), MLS (Sept. 3.44-45p4), and Moriyama Obs. (Sept. 3.53-55p3)

<< DOU on 3 Sept. '10 >> MPEC 2010-R12 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K10Q02G 2010 QG2 (small asteroid, arc=2 days, H=24.2 ~49m) from Spacewatch 1.8m (Sept. 2.30-31p3)
Observations of recently (no longer) risk-listed objects
K10P66R 2010 PR66 (Q=4.936 AU, arc=18 days, H=19.4 ~446m) from Doc Greiner Research Obs. (DGRO) (Aug. 28.09-10p3) and Sormano Obs. (Sept. 1.87-88p3)
Observations of small asteroids (H>22.0)
K10R00F 2010 RF (arc=1 day, H=23.1 ~81m) from LINEAR (Sept. 2.30-35p5)
K10R00A 2010 RA (arc=1 day, H=22.9 ~89m) from LINEAR (Sept. 2.30-35p5)
K10P66S 2010 PS66 (arc=18 days, H=25.1 ~32m) from Desert Moon Obs. (Sept. 2.29p1 & 2.34-38p2) and MLS (Sept. 2.42-44p4)
K10P02Q 2010 PQ2 (arc=30 days, H=24.6 ~41m) from Spacewatch 1.8m (Sept. 2.31-33p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10P66U 2010 PU66 (arc=30 days, H=22.0 ~135m) from Spacewatch 1.8m (Sept. 2.27-28p3)
K10P10R 2010 PR10 (arc=26 days, H=21.9 ~141m) from Stia Obs. (Sept. 1.80-82p4), Sormano Obs. (Sept. 1.90p3), Desert Moon Obs. (Sept. 2.10-12p4), and Chabot Obs. (Sept. 2.17-18p3)
Observations of other objects
K10Q02D 2010 QD2 (arc=12 days, H=17.8 ~933m) from Spacewatch 1.8m (Sept. 2.38-39p3)
K10P10M 2010 PM10 (arc=27 days, H=19.6 ~407m) from LINEAR (Sept. 2.36-47p10)
K10P02P 2010 PP2 (arc=31 days, H=21.1 ~204m) from La Sagra Obs. (Sept. 2.84-86p3)
K10OA1L 2010 OL101 (Q=4.172 AU, arc=37 days, H=20.2 ~309m) from Chabot Obs. (Sept. 2.22-23p3)
K10OA1B 2010 OB101 (arc=46 days, H=20.5 ~269m) from Spacewatch 1.8m (Sept. 2.25-26p3)
K10O00C 2010 OC (Q=4.707 AU, arc=45 days, H=19.1 ~513m) from Sormano Obs. (Sept. 1.94p3)
K10NB7W 2010 NW117 (arc=56 days, H=18.1 ~812m) from DGRO (Aug. 26.13p2) and LINEAR (Sept. 2.19-24p5)
K10N03G 2010 NG3 (Q=4.084 AU, arc=56 days, H=17.1 ~1.29 km) from the Siding Spring Survey (SSS) (Sept. 2.68-69p3)
K10M01F 2010 MF1 (arc=76 days, H=19.7 ~389m) from DGRO (Aug. 23.08p6), Hamamatsu-Yuto Obs. (Sept. 1.47-50p7 & 2.49-52p5), and Castelmartini Obs. (Sept. 1.85-86p3)
K10F92O 2010 FO92 (arc=166 days, H=20.0 ~339m) from Sormano Obs. (Sept. 1.89p3), Castelmartini Obs. (Sept. 1.90p3), and LINEAR (Sept. 2.19-23p4)
K09Y00G 2009 YG (arc=3 opp, H=18.5 ~676m) from MLS (2006 Oct. 22.48-52p7 at V=18.8-21.7 & Sept. 2.36-38p4 at V=21.9-22.7)
K07VI9G 2007 VG189 (arc=2 opp, H=19.3 ~467m) from Santa Mama Obs. (Sept. 2.78-81p5)
K07B49G 2007 BG49 (arc=3 opp, H=18.6 ~645m) from MLS (Sept. 2.42-44p4)
K05X08J 2005 XJ8 (arc=3 opp, H=17.0 ~1.35 km) from Spacewatch 1.8m (Sept. 2.46-47p3 at V=22.1)
K03S84J 2003 SJ84 (i=36.7°, arc=3 opp, H=19.4 ~446m) from Spacewatch 1.8m (Sept. 2.33-35p3 at V=22.5)
K03Q05H 2003 QH5 (arc=2 opp, H=20.1 ~323m) from Spacewatch 1.8m (Sept. 3.14p3)
K03F05C 2003 FC5 (arc=5 opp, H=18.2 ~776m) from LINEAR (Sept. 2.25-30p4)
K02N71E 2002 NE71 (arc=2 opp, H=19.3 ~467m) from Hamamatsu-Yuto Obs. (Sept. 1.52-60p13 & 2.55-58p4) and Castelmartini Obs. (Sept. 1.84-85p4)
O3025 243025 2006 UM216 from Castelmartini Obs. (Sept. 1.90-91p3)
N0979 230979 2005 AT42 from LINEAR (Sept. 2.21-24p3)
I9011 189011 Ogmios (1997 NJ6) from Chabot Obs. (Sept. 2.19-20p3)
G1998 161998 1988 PA from LINEAR (Sept. 2.19-23p5)
F3842 153842 2001 XT30 from Desert Moon Obs. (Sept. 2.47p5)
E3381 143381 2003 BC21 from Atlante Obs. (Sept. 2.97-99p3)
D8404 138404 2000 HA24 from LINEAR (Sept. 2.24-29p4)
87311 87311 2000 QJ1 from LINEAR (Sept. 2.26-29p4)
23187 23187 2000 PN9 from Castelmartini Obs. (Sept. 1.95p3)
19764 19764 2000 NF5 from Hamamatsu-Yuto Obs. (Sept. 1.70-72p4), Vicksburg Obs. (Sept. 2.32-34p5), and LINEAR (Sept. 2.42-46p5)
17182 17182 1999 VU from LINEAR (Sept. 2.36-41p5)
07336 7336 Saunders (1989 RS1) from Castelmartini Obs. (Sept. 1.96-97p3) and the Spaceguard Centre (Sept. 2.93p4)
06239 6239 Minos (1989 QF) from Vicksburg Obs. (Sept. 2.30-31p3), LINEAR (Sept. 2.36-40p5), and Atlante Obs. (Sept. 2.93-95p3)
05786 5786 Talos (1991 RC) from Castelmartini Obs. (Sept. 1.91-92p3)
05143 5143 Heracles (1991 VL) from LINEAR (Sept. 2.36-41p5)
04660 4660 Nereus (1982 DB) from MLS (Sept. 2.38-40p4)
04197 4197 1982 TA from Vicksburg Obs. (Sept. 2.41-42p3)
04183 4183 Cuno (1959 LM) from LINEAR (Sept. 2.31-35p5)
04055 4055 Magellan (1985 DO2) from Santa Mama Obs. (Sept. 2.82-84p5)

Observers on 3 September '10

A total of 29 observing facilities appeared in this day's MPECs.

Code	Observer / observatory
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2010-R12 -- 143381, 6239
`I77`	CEAMIG-REA in Brazil, 1 in MPEC 2010-R13 -- 1997 GL3
`160`	Castelmartini Obs. in Italy, 7 in MPEC 2010-R12 -- 2010 MF1, 2010 FO92, 2002 NE71, 243025, 23187, 7336, 5786
`G58`	Chabot Obs. in northern California, 4 in MPECs 2010-R12 & 2010-R14 -- 2010 RS3, 2010 PR10, 2010 OL101, 189011
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-R13 -- 1997 GL3
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2010-R12 -- 2010 PS66, 2010 PR10, 153842
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2010-R12 -- 2010 PR66, 2010 NW117, 2010 MF1
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2010-R22 -- 2010 RJ4
`734`	Farpoint Obs. in Kansas, 3 in MPECs 2010-R13, 2010-R14 & 2010-R15 -- 2010 RT3, 2010 RS3, 1997 GL3
`J95`	Great Shefford Obs. in England, 5 in MPECs 2010-R13, 2010-R14, 2010-R15, 2010-R19 & 2010-R22 -- 2010 RX3, 2010 RT3, 2010 RS3, 2010 RJ4, 1997 GL3
`379`	Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-R12 -- 2010 MF1, 2002 NE71, 19764
`B15`	Inastars Obs. in Germany, 1 in MPEC 2010-R14 -- 2010 RS3
`704`	LINEAR in New Mexico, 15 in MPEC 2010-R12 -- 2010 RF, 2010 RA, 2010 PM10, 2010 NW117, 2010 FO92, 2003 FC5, 87311, 230979, 19764, 17182, 161998, 138404, 6239, 5143, 4183
`J75`	La Sagra Obs. in Spain, 2 in MPECs 2010-R12 & 2010-R13 -- 2010 PP2, 1997 GL3
`B33`	Libbiano Obs. in Italy, 1 in MPEC 2010-R22 -- 2010 RJ4
`900`	Moriyama Obs. in Japan, 1 in MPEC 2010-R13 -- 1997 GL3
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2010-R12, 2010-R13, 2010-R14, 2010-R15, 2010-R16, 2010-R17, 2010-R18, 2010-R19, 2010-R20, 2010-R21 & 2010-R22 -- 2010 RY3, 2010 RX3, 2010 RW3, 2010 RV3, 2010 RU3, 2010 RT3, 2010 RS3, 2010 RJ4, 2010 PS66, P/2010 L1, 2009 YG, 2007 BG49, 1997 GL3, 4660
`644`	NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-R23 -- P/2002 Q16
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2010-R14 -- 2010 RS3
`854`	Sabino Canyon Obs. in Arizona, 4 in MPECs 2010-R13, 2010-R14, 2010-R15 & 2010-R22 -- 2010 RT3, 2010 RS3, 2010 RJ4, 1997 GL3
`B38`	Santa Mama Obs. in Italy, 2 in MPEC 2010-R12 -- 2007 VG189, 4055
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2010-R21 -- P/2010 L1
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2010-R12 -- 2010 NG3
`587`	Sormano Obs. in Italy, 4 in MPEC 2010-R12 -- 2010 PR66, 2010 PR10, 2010 OC, 2010 FO92
`J26`	Spaceguard Centre in Wales, 1 in MPEC 2010-R12 -- 7336
`291`	Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2010-R12, 2010-R14, 2010-R15, 2010-R17, 2010-R18, 2010-R20 & 2010-R22 -- 2010 RY3, 2010 RW3, 2010 RV3, 2010 RT3, 2010 RS3, 2010 RJ4, 2010 QG2, 2010 QD2, 2010 PU66, 2010 PQ2, 2010 OB101, 2005 XJ8, 2003 SJ84, 2003 QH5
`A78`	Stia Obs. in Italy, 1 in MPEC 2010-R12 -- 2010 PR10
`B18`	Terskol Obs. in Russia, 1 in MPEC 2010-R22 -- 2010 RJ4
`H47`	Vicksburg Obs. in Mississippi, 3 in MPEC 2010-R12 -- 19764, 6239, 4197

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

Impact Risk Monitoring on 3 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 RY3	JPL Sentry	1920	2064-2106	11	2.1e-07	-6.88	-7.08	0	JPL: "Analysis based on 15 observations spanning .98168 days (2010-Sep-02.45103 to 2010-Sep-03.43271)." Diameter approximately 0.035 km. from mean, weighted H=24.9.

2010 RX3	JPL Sentry	1920	2054	1	2.6e-09	-8.58	-8.58	0	JPL: "Analysis based on 17 observations spanning .97471 days (2010-Sep-02.44799 to 2010-Sep-03.4227)." Diameter approximately 0.034 km. from mean, weighted H=25.0.

2010 QG2	JPL Sentry	1502	2051-2064	10	3.2e-05	-4.06	-4.33	0	JPL: "Analysis based on 19 observations spanning 1.9350 days (2010-Aug-31.37082 to 2010-Sep-02.30578)." Diameter approximately 0.049 km. from mean, weighted H=24.2.
2010 QG2	NEODyS	1502	2051-2070	15	3.17e-05	-4.06	-4.34	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2010/08/31.372 to 2010/09/02.307."

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 3 September '10

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

2359	Grabbed MPEC 2010-R23 - Comet P/2010 L1 = 2002 Q16 (WISE) - see above
2302	Grabbed MPEC 2010-R22 - 2010 RJ4 - see above
1920	Noted that JPL Sentry has posted 2010 RX3 as an impact risk - see above Noted that JPL Sentry has posted 2010 RY3 as an impact risk - see above Grabbed MPEC 2010-R21 - Comet P/2010 L1 (WISE) - see above
1734	Grabbed MPEC 2010-R15 - 2010 RT3 - see above Grabbed MPEC 2010-R16 - 2010 RU3 - see above Grabbed MPEC 2010-R17 - 2010 RV3 - see above Grabbed MPEC 2010-R18 - 2010 RW3 - see above Grabbed MPEC 2010-R19 - 2010 RX3 - see above Grabbed MPEC 2010-R20 - 2010 RY3 - see above
1632	Grabbed MPEC 2010-R13 - 1997 GL3 - see above Grabbed MPEC 2010-R14 - 2010 RS3 - see above
1502	Noted that JPL Sentry has updated its 2010 QG2 risk assessment - see above Noted that NEODyS has updated its 2010 QG2 risk assessment - see above Grabbed MPEC 2010-R12 - Daily Orbit Update - see above

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