2008-08-10 Tracking News

Contents on 10 August '08

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- three MPECs
Observers -- 23 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
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 10 August '08

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2357 UTC). It was last noted active yesterday.

New MPECs on 10 August '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-P47 time-stamped "04:04 UT" - Comet P/2008 O2 (McNaught) - see below
MPEC 2008-P48 time-stamped "06:10 UT" - Daily Orbit Update - see below
MPEC 2008-P49 time-stamped "12:45 UT" - 2007 TW431, 2007 TX431

MPEC 2008-P49 - "12:45 UT" - 2007 TW431, 2007 TX431

K07Th1X 2007 TX431 was discovered at 1114 UT on 15 Oct. 2007 from Mauna Kea, where it was observed at 2007 Oct. 15.47p1 at R=23 and 2007 Oct. 15.58-61p2. The discovery was confirmed by Las Campanas Obs. (2007 Nov. 4.08-09p2) and Cerro Tololo Inter-American Obs. (CTIO) (2007 Dec. 6.13p1 & 2007 Dec. 7.04-08p2).
K07Th1W 2007 TW431 was discovered at 0119 UT on 15 Oct. 2007 by Las Campanas Obs., which observed it at 2007 Oct. 15.06p1, 2007 Oct. 15.12p1, 2007 Oct. 15.21p1, 2007 Oct. 16.07p1, 2007 Oct. 16.14p1, 2007 Oct. 16.19p1, 2007 Nov. 2.07p1, and 2007 Nov. 4.01p1.

<< DOU on 10 Aug. '08 >> MPEC 2008-P48 - "06:10 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K08P04W 2008 PW4 (small asteroid, arc=4 days, H=22.4 ~112m) from Astronomical Research Obs. (ARO) (Aug. 9.21-22p4)
K08O08P 2008 OP8 (arc=10 days, H=19.6 ~407m) from ARO (Aug. 9.15-16p4)
K08O02X 2008 OX2 (arc=12 days, H=19.8 ~371m) from ARO (Aug. 9.13-15p3)
Observations of small asteroids (H>22.0)
K08P02F 2008 PF2 (arc=8 days, H=23.5 ~68m) from ARO (Aug. 9.29p5)
K08P01E 2008 PE1 (arc=8 days, H=24.3 ~47m) from ARO (Aug. 9.24-25p4)
K08O06A 2008 OA6 (arc=11 days, H=22.7 ~98m) from ARO (Aug. 9.22-23p4)
K08O00M 2008 OM (arc=15 days, H=22.4 ~112m) from ARO (Aug. 9.10-12p4)
Observations of almost-small asteroids (21.7<H<=22.0)
K08O08M 2008 OM8 (arc=10 days, H=21.9 ~141m) from ARO (Aug. 9.20-21p4)
Observations of other objects
K08P07G 2008 PG7 (i=39.7°, arc=3 days, H=21.6 ~162m) from McCarthy Obs. (Aug. 8.21-25p4, 9.19-20p4 & 10.17-19p4) and ARO (Aug. 9.12-13p3)
K08O09S 2008 OS9 (arc=16 days, H=19.2 ~490m) from Thompsonville Obs. (Aug. 10.21p6)
K08O01X 2008 OX1 (arc=14 days, H=21.5 ~170m) from ARO (Aug. 9.08-09p6)
K08M05B 2008 MB5 (arc=40 days, H=19.3 ~467m) from Wobblesock Obs. (Aug. 9.42p3)
K08M01R 2008 MR1 (arc=40 days, H=18.6 ~645m) from Petit Jean Mtn. South Obs. (PJMSO) (Aug. 9.32-33p6)
K08E69C 2008 EC69 (Q=4.458 AU, arc=2 opp, H=17.2 ~1.23 km) from Leura Obs. (Aug. 8.62-63p3)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from PJMSO (Aug. 9.27-29p5)
K03O04B 2003 OB4 (Q=4.516 AU, arc=2 opp, H=19.3 ~467m) from Capannoli Observatory (Aug. 9.97p2)
K01XQ6W 2001 XW266 (arc=3 opp, H=19.5 ~426m) from McCarthy Obs. (Aug. 10.14-15p3)
K01T45A 2001 TA45 (arc=4 opp, H=19.2 ~490m) from PJMSO (Aug. 9.20-21p5)
I8452 188452 2004 HE62 from Atlante Obs. (Aug. 9.94-95p3) and Thompsonville Obs. (Aug. 10.17-18p6)
G2186 162186 1999 OP3 from Capannoli Obs. (Aug. 10.06p2)
90403 90403 2003 YE45 from Taurus-1 Obs. (Aug. 7.86-92p15)
85713 85713 1998 SS49 from the Siding Spring Survey (SSS) (Aug. 6.59-62p4)
65690 65690 1991 DG from Capannoli Obs. (Aug. 9.93-94p3) and El Guijo Obs. (Aug. 9.95-98p3)
11398 11398 1998 YP11 from Thompsonville Obs. (Aug. 10.15-16p6)
08567 8567 1996 HW1 from Taurus-1 Obs. (Aug. 7.98-02p10 & 9.02-04p6), PJMSO (Aug. 9.21-22p5), Atlante Obs. (Aug. 9.98-99p3), Stammersdorf Obs. (Aug. 9.98-00p5), Capannoli Obs. (Aug. 10.04p1), and Thompsonville Obs. (Aug. 10.14p6)
05332 5332 1990 DA from SSS (Aug. 6.65-71p4)
04257 4257 Ubasti (1987 QA) from El Guijo Obs. (Aug. 10.01-03p3)
04179 4179 Toutatis (1989 AC) from Thompsonville Obs. (Aug. 10.13-14p6)

MPEC 2008-P47 - "04:04 UT" - Comet P/2008 O2 (McNaught)

PK08O020 P/2008 O2 (McNaught) (q=3.713 AU, Q=5.222 AU, TP=2009 Nov. 22.074 TT) from Wobblesock Obs. (July 30.46-47p3 & Aug. 3.48-49p3), Malaga Obs. (Aug. 4.08-09p3), Gisborne Obs. (Aug. 5.40-48p5), SSS (Aug. 5.76p2), Suno Obs. (Aug. 5.90p1 & 5.95p1), Nazaret Obs. (Aug. 6.99-00p3), Ageo Obs. (Aug. 7.69-70p2), La Vara Obs. (Aug. 9.00-01p3), Moriyama Obs. (Aug. 9.64p2), and Masia Cal Maciarol Modul 8 (MCM8) (Aug. 9.99-00p3)

Observers on 10 August '08

A total of 23 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 1 in MPEC 2008-P47 -- P/2008 O2
`H55`	Astronomical Research Obs. (ARO) in Illinois, 10 in MPEC 2008-P48 -- 2008 PW4, 2008 PG7, 2008 PF2, 2008 PE1, 2008 OX2, 2008 OX1, 2008 OP8, 2008 OM8, 2008 OM, 2008 OA6
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2008-P48 -- 188452, 8567
`B09`	Capannoli Observatory in Italy, 4 in MPEC 2008-P48 -- 2003 OB4, 65690, 162186, 8567
`807`	Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-P49 -- 2007 TX431
`J27`	El Guijo Obs. in Spain, 2 in MPEC 2008-P48 -- 65690, 4257
`E94`	Gisborne Obs., 1 in MPEC 2008-P47 -- P/2008 O2
`J38`	La Vara Obs. in Spain, 1 in MPEC 2008-P47 -- P/2008 O2
`304`	Las Campanas Obs. in Chile, 2 in MPEC 2008-P49 -- 2007 TX431, 2007 TW431
`E17`	Leura Obs. in New South Wales, 1 in MPEC 2008-P48 -- 2008 EC69
`J40`	Malaga Obs. in Spain, 1 in MPEC 2008-P47 -- P/2008 O2
`A02`	Masia Cal Maciarol Modul 8 in Spain, 1 in MPEC 2008-P47 -- P/2008 O2
`568`	Mauna Kea in Hawaii, 1 in MPEC 2008-P49 -- 2007 TX431
`932`	McCarthy Obs. in Connecticut, 2 in MPEC 2008-P48 -- 2008 PG7, 2001 XW266
`900`	Moriyama Obs. in Japan, 1 in MPEC 2008-P47 -- P/2008 O2
`J47`	Nazaret Obs. in Spain, 1 in MPEC 2008-P47 -- P/2008 O2
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2008-P48 -- 2008 MR1, 2005 TZ51, 2001 TA45, 8567
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-P47 & 2008-P48 -- P/2008 O2, 85713, 5332
`A97`	Stammersdorf Obs. in Austria, 1 in MPEC 2008-P48 -- 8567
`147`	Suno Obs. in Italy, 1 in MPEC 2008-P47 -- P/2008 O2
`A98`	Taurus-1 Obs. in Belarus, 2 in MPEC 2008-P48 -- 90403, 8567
`H53`	Thompsonville Obs. in Illinois, 5 in MPEC 2008-P48 -- 2008 OS9, 188452, 11398, 8567, 4179
`E08`	Wobblesock Obs. in New South Wales, 2 in MPECs 2008-P47 & 2008-P48 -- P/2008 O2, 2008 MB5

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

Impact Risk Monitoring on 10 August '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2357 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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

2008 PR9	NEODyS	1508	2020-2086	3	3.89e-08	-5.50	-5.53	0	NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2008/08/08.728 to 2008/08/09.446."

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 10 August '08

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

1508	Grabbed MPEC 2008-P48 - Daily Orbit Update - see above Grabbed MPEC 2008-P49 - 2007 TW431, 2007 TX431 - see above
1507	Noted that NEODyS has posted 2008 PR9 as an impact risk - see above
0618	Grabbed MPEC 2008-P47 - Comet P/2008 O2 (McNaught) - see above

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