2009-08-16 Tracking News

Contents on 16 August '09

IAU Minor Planet Center
- NEOCP Activity -- four listings: 1 new, 3 updated
- New MPECs -- four MPECs
Observers -- 25 observing facilities
Impact Risk Monitoring -- one object
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 16 August '09

The MPC's NEO Confirmation Page has 4 listings: 1 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and three updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of ten 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 16 August '09

Minor Planet Electronic Circulars

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

MPEC 2009-Q01 time-stamped "00:13 UT" - 2009 PU1 - see below
MPEC 2009-Q02 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2009-Q03 time-stamped "22:47 UT" - 2009 PT2 - see below
MPEC 2009-Q04 time-stamped "23:05 UT" - 2009 QC

MPEC 2009-Q04 - "23:05 UT" - 2009 QC

K09Q00C 2009 QC was discovered at 0937 UT on 16 Aug. by the Catalina Sky Survey (CSS), which observed it at Aug. 16.40-42p4 and 16.49p4. The discovery was confirmed by Mandi Obs. (Aug. 16.88-91p5) and Sormano Obs. (Aug. 16.91p3).

MPEC 2009-Q03 - "22:47 UT" - 2009 PT2

K09P02T 2009 PT2 was discovered at 0347 UT on 15 Aug. by the Spacewatch 0.9m telescope, which observed it at Aug. 15.16-19p3. The discovery was confirmed by Great Shefford Obs. (Aug. 15.97p2), Astronomical Research Obs. (ARO) (Aug. 16.15-16p2), and the Spacewatch 1.8m telescope (Aug. 16.27-28p3).

<< DOU on 16 Aug. '09 >> MPEC 2009-Q02 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K09P01U 2009 PU1 (small asteroid, arc=1 day, H=22.2 ~123m) from Great Shefford Obs. (Aug. 16.07-08p4)
Observations of small asteroids (H>22.0)
K09P00H 2009 PH (arc=5 days, H=22.2 ~123m) from ARO (Aug. 15.14-15p3)
K09M08N 2009 MN8 (arc=48 days, H=22.7 ~98m) from ARO (Aug. 15.20-21p3 at V=21.8-22.1)
Observations of other objects
K09O07Z 2009 OZ7 (arc=18 days, H=21.0 ~214m) from ARO (Aug. 15.22-24p4) and CSS (Aug. 15.29-31p4)
K09O00G 2009 OG (i=48.3°, q=0.382 AU, Q=5.029 AU, arc=29 days, H=16.2 ~1.95 km) from Petit Jean Mtn. South Obs. (PJMSO) (Aug. 15.16-17p9), Atlante Obs. (Aug. 15.86-87p3), and Thompsonville Obs. (Aug. 16.12p6)
K09O00C 2009 OC (arc=2 opp, H=20.4 ~282m) from Eschenberg Obs. (Aug. 15.84-85p7), Atlante Obs. (Aug. 15.97-98p3), Bootes Obs. (Aug. 15.97-02p4), and Drebach Obs. (Aug. 15.99-01p3)
K09N01D 2009 ND1 (Q=4.302 AU, arc=32 days, H=16.7 ~1.55 km) from Alianza S4 Obs. (Aug. 14.14p3)
K09N00L 2009 NL (Q=4.764 AU, arc=33 days, H=19.8 ~371m) from LINEAR (Aug. 15.35-39p5)
K09N00H 2009 NH (arc=36 days, H=18.8 ~589m) from Siegen Obs. (Aug. 15.04-06p3) and Atlante Obs. (Aug. 15.00-01p3)
K09N00E 2009 NE (q=0.361 AU, Q=4.987 AU, arc=4 opp, H=15.9 ~2.24 km) from PJMSO (Aug. 15.15-16p6)
K09N00A 2009 NA (Q=4.133 AU, arc=45 days, H=17.5 ~1.07 km) from Doc Greiner Research Obs. (DGRO) (Aug. 15.19-20p6)
K09M09C 2009 MC9 (arc=46 days, H=17.9 ~891m) from DGRO (Aug. 15.22-23p10)
K09M06Z 2009 MZ6 (arc=2 opp, H=20.6 ~257m) from ARO (Aug. 15.20-21p4)
K09M06X 2009 MX6 (arc=52 days, H=19.2 ~490m) from McCarthy Obs. (Aug. 15.06p1)
K09L00S 2009 LS (i=45.0°, arc=64 days, H=18.0 ~851m) from ARO (Aug. 15.10-11p3)
K09H82B 2009 HB82 (Q=4.414 AU, arc=114 days, H=17.8 ~933m) from Goodricke-Pigott Obs. (Aug. 15.36-39p3)
K09D03R 2009 DR3 (arc=181 days, H=21.5 ~170m) from ARO (Aug. 14.25-28p4 at V=22.0-22.4)
K06C00X 2006 CX (arc=3 opp, H=18.9 ~562m) from ARO (Aug. 15.30-31p3 at V=22.0-22.2)
K05M00C 2005 MC (Q=4.169 AU, arc=3 opp, H=16.4 ~1.78 km) from Castelmartini Obs. (Aug. 14.90p3)
K02N16W 2002 NW16 (arc=2 opp, H=18.0 ~851m) from Castelmartini Obs. (Aug. 14.97-98p4)
K02N01P 2002 NP1 (arc=3 opp, H=17.7 ~977m) from Siegen Obs. (Aug. 15.02-03p3), DGRO (Aug. 15.20-21p10), CSS (Aug. 15.29-31p4), Eschenberg Obs. (Aug. 15.82-83p7), and Posadas Obs. (Aug. 16.04p3)
K01O14A 2001 OA14 (arc=4 opp, H=18.4 ~708m) from Castelmartini Obs. (Aug. 14.95p3)
K01H04A 2001 HA4 (Q=4.819 AU, arc=2 opp, H=17.6 ~1.02 km) from the Siding Spring Survey (SSS) (Aug. 15.56-59p2)
L7430 217430 2005 SN25 from Atlante Obs. (Aug. 15.94-96p3) and Posadas Obs. (Aug. 16.02-03p3)
L7390 217390 2005 CW25 from McCarthy Obs. (Aug. 15.11p1) and Thompsonville Obs. (Aug. 16.14-15p6)
G2483 162483 2000 PJ5 from CSS (Aug. 15.18-20p4)
54401 54401 2000 LM from Castelmartini Obs. (Aug. 14.91-92p3)
20826 20826 2000 UV13 from LINEAR (Aug. 15.35-40p4)
17274 17274 2000 LC16 from McCarthy Obs. (Aug. 15.14p2), Spacewatch 0.9m (Aug. 15.16-19p3), and Mt. Tuffley Obs. (Aug. 15.94p3)
16834 16834 1997 WU22 from LINEAR (July 2.36-40p7) and Castelmartini Obs. (Aug. 14.96p3)
11066 11066 Sigurd (1992 CC1) from Bootes Obs. (Aug. 16.18-19p3)
08566 8566 1996 EN from Bootes Obs. (Aug. 16.17p3)
05626 5626 1991 FE from Spacewatch 0.9m (Aug. 15.15-18p3), CSS (Aug. 15.24-26p4), and Thompsonville Obs. (Aug. 16.16-17p6)
02100 2100 Ra-Shalom (1978 RA) from Thompsonville Obs. (Aug. 16.13p5)
01943 1943 Anteros (1973 EC) from LINEAR (July 25.35-40p5), Velikie Luki Obs. (Aug. 14.85-89p2 & 15.83-88p3), Bootes Obs. (Aug. 15.94p3), and Drebach Obs. (Aug. 15.96p4)
00433 433 Eros (1898 DQ) from LINEAR (July 17.33-35p3) and Mt. Tuffley Obs. (Aug. 15.93p3)

MPEC 2009-Q01 - "00:13 UT" - 2009 PU1

K09P01U 2009 PU1 (risk-listed) was discovered at 0945 UT on 15 Aug. by LINEAR, which observed it at Aug. 15.41-45p5. The discovery was confirmed by Wildberg Obs. (Aug. 15.96-97p5) and Eschenberg Obs. (Aug. 15.97p3).

Observers on 16 August '09

A total of 25 observing facilities appear in today's MPECs.

Code	Observer / observatory
`I08`	Alianza S4 Obs. in Argentina, 1 in MPEC 2009-Q02 -- 2009 ND1
`H55`	Astronomical Research Obs. (ARO) in Illinois, 8 in MPECs 2009-Q02 & 2009-Q03 -- 2009 PT2, 2009 PH, 2009 OZ7, 2009 MZ6, 2009 MN8, 2009 LS, 2009 DR3, 2006 CX
`J51`	Atlante Obs. in the Canary Islands, 4 in MPEC 2009-Q02 -- 2009 OG, 2009 OC, 2009 NH, 217430
`J05`	Bootes Obs., 4 in MPEC 2009-Q02 -- 2009 OC, 11066, 8566, 1943
`160`	Castelmartini Obs. in Italy, 5 in MPEC 2009-Q02 -- 2005 MC, 2002 NW16, 2001 OA14, 54401, 16834
`703`	Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2009-Q02 & 2009-Q04 -- 2009 QC, 2009 OZ7, 2002 NP1, 162483, 5626
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2009-Q02 -- 2009 NA, 2009 MC9, 2002 NP1
`113`	Drebach Obs. in Germany, 2 in MPEC 2009-Q02 -- 2009 OC, 1943
`151`	Eschenberg Obs. in Switzerland, 3 in MPECs 2009-Q01 & 2009-Q02 -- 2009 PU1, 2009 OC, 2002 NP1
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-Q02 -- 2009 HB82
`J95`	Great Shefford Obs. in England, 2 in MPECs 2009-Q02 & 2009-Q03 -- 2009 PU1, 2009 PT2
`704`	LINEAR in New Mexico, 6 in MPECs 2009-Q01 & 2009-Q02 -- 2009 PU1, 2009 NL, 20826, 16834, 1943, 433
`B28`	Mandi Obs. in Italy, 1 in MPEC 2009-Q04 -- 2009 QC
`932`	McCarthy Obs. in Connecticut, 3 in MPEC 2009-Q02 -- 2009 MX6, 217390, 17274
`J93`	Mt. Tuffley Obs. in England, 2 in MPEC 2009-Q02 -- 17274, 433
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2009-Q02 -- 2009 OG, 2009 NE
`J53`	Posadas Obs. in Spain, 2 in MPEC 2009-Q02 -- 2002 NP1, 217430
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2009-Q02 -- 2001 HA4
`510`	Siegen Obs. in Germany, 2 in MPEC 2009-Q02 -- 2009 NH, 2002 NP1
`587`	Sormano Obs. in Italy, 1 in MPEC 2009-Q04 -- 2009 QC
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2009-Q02 & 2009-Q03 -- 2009 PT2, 17274, 5626
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2009-Q03 -- 2009 PT2
`H53`	Thompsonville Obs. in Illinois, 4 in MPEC 2009-Q02 -- 2009 OG, 217390, 5626, 2100
`C00`	Velikie Luki Obs., 1 in MPEC 2009-Q02 -- 1943
`198`	Wildberg Obs. in Germany, 1 in MPEC 2009-Q01 -- 2009 PU1

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

Impact Risk Monitoring on 16 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 PU1	JPL Sentry	1525	R E M O V E D						JPL #2 for the day: Risk listing removed at 0850 UTC.

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 16 August '09

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

2358	Grabbed MPEC 2009-Q03 - 2009 PT2 - see above Grabbed MPEC 2009-Q04 - 2009 QC - see above
1525	Noted that JPL Sentry has removed 2009 PU1 as an impact risk - see above Grabbed MPEC 2009-Q02 - Daily Orbit Update - see above
0223	Noted that JPL Sentry has posted 2009 PU1 as an impact risk - see above
0017	Grabbed MPEC 2009-Q01 - 2009 PU1 - see above

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