2009-08-21 Tracking News

Contents on 21 August '09

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- six MPECs
Observers -- 28 observing facilities
Impact Risk Monitoring -- four 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 - NEW 13-14 Aug. 2009
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 21 August '09

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were four listings noted earlier today.

New MPECs on 21 August '09

Minor Planet Electronic Circulars

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

MPEC 2009-Q36 time-stamped "01:54 UT" - 2009 QL8 - see below
MPEC 2009-Q37 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2009-Q38 time-stamped "10:21 UT" - 2009 QO8 - see below
MPEC 2009-Q39 time-stamped "10:23 UT" - 2009 QQ8 - see below
MPEC 2009-Q40 time-stamped "11:04 UT" - 2009 QR8 - see below
MPEC 2009-Q41 time-stamped "20:24 UT" - 2008 SO266

MPEC 2009-Q41 - "20:24 UT" - 2008 SO266

K08SQ6O 2008 SO266 from Mt. Palomar (Aug. 18.34p1, 18.40p1, 18.45p1 & 21.43p1)

MPEC 2009-Q40 - "11:04 UT" - 2009 QR8

K09Q08R 2009 QR8 was discovered at 1009 UT on 18 Aug. by the Spacewatch 0.9m telescope, which observed it at Aug. 18.42-46p3. The discovery was confirmed by the Spacewatch 1.8m telescope (Aug. 18.50p3 & 20.32-33p3).

MPEC 2009-Q39 - "10:23 UT" - 2009 QQ8

K09Q08Q 2009 QQ8 was discovered at 0639 UT on 20 Aug. by LINEAR, which observed it at Aug. 20.28-31p4. The discovery was confirmed by Great Shefford Obs. (Aug. 21.08-09p3) and Dave Balam via Plaskett 1.8m Telescope (Aug. 21.33-34p3).

MPEC 2009-Q38 - "10:21 UT" - 2009 QO8

K09Q08O 2009 QO8 was discovered at 1410 UT on 18 Aug. by the Siding Spring Survey (SSS), which observed it at Aug. 18.59-63p4, 18.69-70p2, and 20.65p2. The discovery was confirmed by Tanti Obs. (Aug. 21.20-23p4).

<< DOU on 21 Aug. '09 >> MPEC 2009-Q37 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K09Q06H 2009 QH6 (small asteroid, arc=1 day, H=22.7 ~98m) from Spacewatch 1.8m (Aug. 20.27-28p3), M. Trueblood & L. Lebofsky via Kitt Peak Natl. Obs. (KPNO) (Aug. 20.32p3), Sormano Obs. (Aug. 20.87p3), and Great Shefford Obs. (Aug. 20.87-89p3)
K09Q00R 2009 QR (small asteroid, arc=4 days, H=27.4 ~11m) from Great Shefford Obs. (Aug. 21.07-08p3)
Observations of small asteroids (H>22.0)
K09Q06J 2009 QJ6 (arc=2 days, H=22.6 ~102m) from Trueblood & Lebofsky/KPNO (Aug. 20.35p3) and Great Shefford Obs. (Aug. 21.13p3)
K09Q05M 2009 QM5 (arc=2 days, H=22.4 ~112m) from Trueblood & Lebofsky/KPNO (Aug. 20.24-28p3) and Spacewatch 1.8m (Aug. 20.26-27p3)
K09Q02J 2009 QJ2 (arc=2 days, H=23.5 ~68m) from SSS (Aug. 20.60p2)
K09Q02G 2009 QG2 (arc=3 days, H=23.2 ~78m) from LINEAR (Aug. 20.14-17p4), Castelmartini Obs. (Aug. 20.85-86p3), Great Shefford Obs. (Aug. 20.85-87p3), Zonalunar Obs. (Aug. 20.91p1), and Sormano Obs. (Aug. 20.94p2)
K09Q00C 2009 QC (arc=4 days, H=22.3 ~117m) from Spacewatch 0.9m (Aug. 20.22-24p2) and the Catalina Sky Survey (CSS) (Aug. 20.33-34p3)
K09P01R 2009 PR1 (arc=6 days, H=24.6 ~41m) from SSS (Aug. 20.66p2)
K09P00H 2009 PH (arc=10 days, H=22.2 ~123m) from Spacewatch 1.8m (Aug. 20.19-20p3)
K07R17Q 2007 RQ17 (arc=2 opp, H=22.6 ~102m) from CSS (Aug. 20.40-42p4)
Observations of almost-small asteroids (21.7<H<=22.0)
K09Q05O 2009 QO5 (arc=2 days, H=22.0 ~135m) from Spacewatch 1.8m (Aug. 20.33-34p3)
Observations of other objects
K09Q08E 2009 QE8 (arc=5 days, H=18.2 ~776m) from Castelmartini Obs. (Aug. 20.95p1)
K09Q02L 2009 QL2 (Q=4.115 AU, arc=2 days, H=21.0 ~214m) from Trueblood & Lebofsky/KPNO (Aug. 20.27p3)
K09Q02K 2009 QK2 (Q=5.230 AU, arc=3 days, H=17.8 ~933m) from Sormano Obs. (Aug. 20.88p2)
K09Q01W 2009 QW1 (Q=4.326 AU, arc=3 days, H=21.5 ~170m) from SSS (Aug. 20.54p2)
K09Q00O 2009 QO (arc=58 days, H=20.1 ~323m) from Doc Greiner Research Obs. (DGRO) (Aug. 19.13p3)
K09P00Y 2009 PY (arc=7 days, H=21.2 ~195m) from SSS (Aug. 20.47-48p3)
K09O00G 2009 OG (i=48.3°, q=0.382 AU, Q=5.029 AU, arc=34 days, H=16.2 ~1.95 km) from Castelmartini Obs. (Aug. 20.81p3) and Sormano Obs. (Aug. 20.86p3)
K09O00C 2009 OC (arc=2 opp, H=20.4 ~282m) from Thompsonville Obs. (Aug. 20.24-25p6)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.9 ~2.24 km) from Thompsonville Obs. (Aug. 20.14-15p6) and Castelmartini Obs. (Aug. 20.83-84p5)
K09M01L 2009 ML1 (arc=59 days, H=19.5 ~426m) from Bigmuskie Obs. (Aug. 21.06-07p3)
K09L00X 2009 LX (Q=4.542 AU, arc=70 days, H=19.5 ~426m) from Eschenberg Obs. (Aug. 20.84p3) and Bigmuskie Obs. (Aug. 20.97-98p3)
K09K02L 2009 KL2 (arc=2 opp, H=18.0 ~851m) from Castelmartini Obs. (Aug. 20.82p3)
K09H82B 2009 HB82 (Q=4.414 AU, arc=119 days, H=17.7 ~977m) from LINEAR (Aug. 20.32-37p5)
K07L00L 2007 LL (arc=3 opp, H=20.4 ~282m) from CSS (Aug. 20.21-23p4)
K06W01N 2006 WN1 (arc=2 opp, H=18.9 ~562m) from Spacewatch 1.8m (Aug. 20.44-45p3)
K06O15F 2006 OF15 (arc=3 opp, H=18.4 ~708m) from Spacewatch 1.8m (Aug. 20.49-50p2)
K06E01E 2006 EE1 (i=36.4°, arc=2 opp, H=19.7 ~389m) from Jim Young via Table Mtn. Obs. (Aug. 20.20-22p4)
K05E00J 2005 EJ (arc=3 opp, H=19.9 ~355m) from Spacewatch 1.8m (Aug. 20.37-39p3 at V=21.8-22.1)
K03T00K 2003 TK (arc=3 opp, H=19.6 ~407m) from Spacewatch 1.8m (Aug. 20.34-36p3)
K02T69A 2002 TA69 (i=38.7°, arc=2 opp, H=18.2 ~776m) from Spacewatch 1.8m (Aug. 20.48-49p2)
K02N01P 2002 NP1 (arc=3 opp, H=17.6 ~1.02 km) from Thompsonville Obs. (Aug. 20.22-23p6) and Eschenberg Obs. (Aug. 20.81p3)
K01H07Z 2001 HZ7 (arc=2 opp, H=19.7 ~389m) from Spacewatch 1.8m (Aug. 20.30-31p3)
J93R00A 1993 RA (arc=3 opp, H=19.2 ~490m) from Spacewatch 0.9m (Aug. 20.36-38p2)
L7390 217390 2005 CW25 from LINEAR (Aug. 20.14-18p4), Thompsonville Obs. (Aug. 20.16p6), and Castelmartini Obs. (Aug. 20.81p3)
G3697 163697 2003 EF54 from CSS (Aug. 20.21-23p4) and Castelmartini Obs. (Aug. 20.86-87p3)
D8925 138925 2001 AU43 from Castelmartini Obs. (Aug. 20.85p3)
52750 52750 1998 KK17 from La Sagra Obs. (Aug. 19.98-01p3)
35107 35107 1991 VH from Betelgeuse Station (Feb. 11.88-89p3)
22753 22753 1998 WT from Betelgeuse Sta. (Feb. 11.99p1)
17274 17274 2000 LC16 from Thompsonville Obs. (Aug. 20.19-21p6) and Mt. Tuffley Obs. (Aug. 20.97p3)
05626 5626 1991 FE from Thompsonville Obs. (Aug. 20.18-19p6)
05587 5587 1990 SB from LINEAR (Aug. 20.40-44p4)
04179 4179 Toutatis (1989 AC) from Betelgeuse Sta. (Feb. 11.99p3)
04015 4015 Wilson-Harrington (1979 VA) from Buchloe Obs. (Aug. 19.85p3) and Grove Creek Obs. (Aug. 20.46-47p2)
02100 2100 Ra-Shalom (1978 RA) from Alicante Obs. (Aug. 19.85-86p2) and LINEAR (Aug. 20.13-18p5)
00433 433 Eros (1898 DQ) from Velikie Luki Obs. (Aug. 20.81-86p3) and Mt. Tuffley Obs. (Aug. 20.95-96p3)

MPEC 2009-Q36 - "01:54 UT" - 2009 QL8

K09Q08L 2009 QL8 (risk-listed) was discovered at 0923 UT on 20 Aug. by CSS, which observed it at Aug. 20.39-44p8. The discovery was confirmed by Sormano Obs. (Aug. 20.97-98p3), CAST Obs. (Aug. 20.99-00p2), Great Shefford Obs. (Aug. 21.02-03p3), Drebach Obs. (Aug. 21.03-05p3), and Schiaparelli Obs. (Aug. 21.03-06p3).

Observers on 21 August '09

A total of 28 observing facilities appear in today's MPECs.

Code	Observer / observatory
`J10`	Alicante Obs. in Spain, 1 in MPEC 2009-Q37 -- 2100
`B75`	Betelgeuse Station in Italy, 3 in MPEC 2009-Q37 -- 35107, 22753, 4179
`B88`	Bigmuskie Obs. in Italy, 2 in MPEC 2009-Q37 -- 2009 ML1, 2009 LX
`215`	Buchloe Obs. in Germany, 1 in MPEC 2009-Q37 -- 4015
`235`	CAST Obs. in Italy, 1 in MPEC 2009-Q36 -- 2009 QL8
`160`	Castelmartini Obs. in Italy, 8 in MPEC 2009-Q37 -- 2009 QG2, 2009 QE8, 2009 OG, 2009 NE, 2009 KL2, 217390, 163697, 138925
`703`	Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2009-Q36 & 2009-Q37 -- 2009 QL8, 2009 QC, 2007 RQ17, 2007 LL, 163697
`H26`	Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-Q37 -- 2009 QO
`113`	Drebach Obs. in Germany, 1 in MPEC 2009-Q36 -- 2009 QL8
`151`	Eschenberg Obs. in Switzerland, 2 in MPEC 2009-Q37 -- 2009 LX, 2002 NP1
`J95`	Great Shefford Obs. in England, 6 in MPECs 2009-Q36, 2009-Q37 & 2009-Q39 -- 2009 QR, 2009 QQ8, 2009 QL8, 2009 QJ6, 2009 QH6, 2009 QG2
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2009-Q37 -- 4015
`695]`	M. Trueblood & L. Lebofsky via Kitt Peak Natl. Obs. (KPNO) in Arizona, 4 in MPEC 2009-Q37 -- 2009 QM5, 2009 QL2, 2009 QJ6, 2009 QH6
`704`	LINEAR in New Mexico, 6 in MPECs 2009-Q37 & 2009-Q39 -- 2009 QQ8, 2009 QG2, 2009 HB82, 217390, 5587, 2100
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2009-Q37 -- 52750
`675`	Mt. Palomar in southern California, 1 in MPEC 2009-Q41 -- 2008 SO266
`J93`	Mt. Tuffley Obs. in England, 2 in MPEC 2009-Q37 -- 17274, 433
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2009-Q39 -- 2009 QQ8
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2009-Q36 -- 2009 QL8
`E12`	Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2009-Q37 & 2009-Q38 -- 2009 QW1, 2009 QO8, 2009 QJ2, 2009 PY, 2009 PR1
`587`	Sormano Obs. in Italy, 5 in MPECs 2009-Q36 & 2009-Q37 -- 2009 QL8, 2009 QK2, 2009 QH6, 2009 QG2, 2009 OG
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2009-Q37 & 2009-Q40 -- 2009 QR8, 2009 QC, 1993 RA
`291`	Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2009-Q37 & 2009-Q40 -- 2009 QR8, 2009 QO5, 2009 QM5, 2009 QH6, 2009 PH, 2006 WN1, 2006 OF15, 2005 EJ, 2003 TK, 2002 TA69, 2001 HZ7
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2009-Q37 -- 2006 EE1
`I19`	Tanti Obs. in Argentina, 1 in MPEC 2009-Q38 -- 2009 QO8
`H53`	Thompsonville Obs. in Illinois, 6 in MPEC 2009-Q37 -- 2009 OC, 2009 NE, 2002 NP1, 217390, 17274, 5626
`C00`	Velikie Luki Obs., 1 in MPEC 2009-Q37 -- 433
`J08`	Zonalunar Obs. in Spain, 1 in MPEC 2009-Q37 -- 2009 QG2

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

Impact Risk Monitoring on 21 August '09

**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

2009 QL8	NEODyS	1411	2015-2086	32	5.56e-09	-4.87	-5.03	0	NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2009/08/20.392 to 2009/08/21.063."
2009 QL8	JPL Sentry	0528	2016-2096	18	6.0e-09	-5.15	-5.63	0	JPL: "Analysis based on 22 observations spanning .67040 days (2009-Aug-20.39152 to 2009-Aug-21.06192)." Diameter approximately 0.434 km. from mean, weighted H=19.5.

2009 QZ6	NEODyS	1411	2020-2068	5	2.16e-10	-5.49	-5.67	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2009/08/19.367 to 2009/08/20.439."

2009 QH6	NEODyS	1411	R E M O V E D						-
2009 QH6	JPL Sentry	1411	R E M O V E D						JPL: Risk listing removed at 0853 UTC.

2009 QR	NEODyS	1411	2087	1	2.1e-08	-9.20	-9.20	0	NEODyS: "Based on 40 optical observations (of which 5 are rejected as outliers) from 2009/08/17.244 to 2009/08/21.076."

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 21 August '09

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

2102	Grabbed MPEC 2009-Q41 - 2008 SO266 - see above
1411	Noted that JPL Sentry has removed 2009 QH6 as an impact risk - see above Noted that NEODyS has removed 2009 QH6 as an impact risk - see above Noted that NEODyS has posted 2009 QL8 as an impact risk - see above Noted that NEODyS has updated its 2009 QR risk assessment - see above Noted that NEODyS has posted 2009 QZ6 as an impact risk - see above Grabbed MPEC 2009-Q37 - Daily Orbit Update - see above Grabbed MPEC 2009-Q38 - 2009 QO8 - see above Grabbed MPEC 2009-Q39 - 2009 QQ8 - see above Grabbed MPEC 2009-Q40 - 2009 QR8 - see above Noted that the NEOCP has become empty
0528	Noted that JPL Sentry has posted 2009 QL8 as an impact risk - see above
0205	Grabbed MPEC 2009-Q36 - 2009 QL8 - see above

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