2008-08-26 Tracking News

Contents on 26 August '08

IAU Minor Planet Center
- NEOCP Activity -- five listings: 2 new, 3 updated
- New MPECs -- four MPECs
Observers -- 22 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
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 26 August '08

The MPC's NEO Confirmation Page has 5 listings: 2 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and three updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of eight objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs on 26 August '08

Minor Planet Electronic Circulars

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

MPEC 2008-Q40 time-stamped "06:06 UT" - Daily Orbit Update - see below
MPEC 2008-Q41 time-stamped "17:00 UT" - 2008 QT3 - see below
MPEC 2008-Q42 time-stamped "17:24 UT" - 2007 VH305 - see below
MPEC 2008-Q43 time-stamped "17:39 UT" - 2008 QU3

MPEC 2008-Q43 - "17:39 UT" - 2008 QU3

K08Q03U 2008 QU3 (H=20.5 ~269m) was discovered at 0448 UT on 22 Aug. by LINEAR, which observed it at Aug. 22.20-25p6. The discovery was confirmed by Crni Vrh Obs. (Aug. 25.80-83p4), Farra d'Isonzo Obs. (Aug. 25.88-90p3), Schiaparelli Obs. (Aug. 25.93-94p3), Monte Baldo Obs. (Aug. 25.94p1), Terskol Obs. (Aug. 26.01p4), Astronomical Research Obs. (ARO) (Aug. 26.07-08p5), Prairie Grass Obs. (Aug. 26.10-13p6), and Jim Young via Table Mtn. Obs. (Aug. 26.16-20p4).

MPEC 2008-Q42 - "17:24 UT" - 2007 VH305

K07VU5H 2007 VH305 (Centaur, q=8.188 AU, Q=40.643 AU, H=11.5 ~17.0 km) from the SZTE Asteroid Program (SZTE) (Aug. 25.05p1 & 26.08-10p2)

MPEC 2008-Q41 - "17:00 UT" - 2008 QT3

K08Q03T 2008 QT3 (risk-listed, Earth MOID=2.3 LD, H=18.7 ~616m) was discovered at 2133 UT on 24 Aug. by Crni Vrh Obs., which observed it at Aug. 24.90-93p4. The discovery was confirmed by KLENOT (Aug. 24.00p2 & 25.88-89p7), Drebach Obs. (Aug. 25.02p3), Terskol Obs. (Aug. 25.02-03p4 & 26.01-02p4), Sandlot Obs. (Aug. 25.09-10p4), Remanzacco Obs. (Aug. 25.11p1), Schiaparelli Obs. (Aug. 25.95p2), ARO (Aug. 26.18-19p6), and Young/Table Mtn. (Aug. 26.29-33p4).

<< DOU on 26 Aug. '08 >> MPEC 2008-Q40 - "06:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K08Q01C 2008 QC1 (small asteroid, Q=4.262 AU, arc=2 days, H=24.1 ~51m) from ARO (Aug. 25.26-27p3) and the Siding Spring Survey (SSS) (Aug. 25.67-68p2)
K08O00O 2008 OO (arc=30 days, H=19.8 ~371m) from ARO (Aug. 25.14-16p4)
Observations of recently (no longer) risk-listed objects
K08O07S 2008 OS7 (arc=26 days, H=20.5 ~269m) from ARO (Aug. 25.18-20p4)
K08O02X 2008 OX2 (arc=28 days, H=20.0 ~339m) from ARO (Aug. 25.20-21p3)
Observations of small asteroids (H>22.0)
K08Q01A 2008 QA1 (arc=2 days, H=22.4 ~112m) from ARO (Aug. 25.19-20p3) and SSS (Aug. 25.67p2)
K08P02F 2008 PF2 (arc=24 days, H=23.8 ~59m) from ARO (Aug. 25.34-36p3)
K08O08N 2008 ON8 (arc=26 days, H=25.3 ~29m) from ARO (Aug. 25.37-41p3 at V=22.2-6)
K08O06A 2008 OA6 (arc=27 days, H=22.7 ~98m) from ARO (Aug. 25.24-26p3)
K08O00M 2008 OM (arc=30 days, H=22.3 ~117m) from the Spacewatch 0.9m telescope (Aug. 21.19-22p3)
K08M01Q 2008 MQ1 (arc=56 days, H=24.2 ~49m) from ARO (Aug. 25.27-29p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K08O08M 2008 OM8 (arc=26 days, H=22.0 ~135m) from ARO (Aug. 25.32-33p3)
Observations of other objects
K08Q01D 2008 QD1 (arc=2 days, H=18.8 ~589m) from ARO (Aug. 25.30-31p3) and SSS (Aug. 25.68p2)
K08Q00Z 2008 QZ (arc=3 days, H=20.5 ~269m) from Spacewatch 0.9m (Aug. 24.32-33p3), LINEAR (Aug. 24.35-37p3), and ARO (Aug. 25.23-25p3)
K08Q00C 2008 QC (arc=6 days, H=20.7 ~245m) from SSS (Aug. 25.69p2)
K08Q00B 2008 QB (q=0.314 AU, arc=6 days, H=20.7 ~245m) from Schiaparelli Obs. (Aug. 21.97p5) and SSS (Aug. 25.49p2)
K08P03L 2008 PL3 (arc=20 days, H=19.4 ~446m) from LINEAR (Aug. 23.27-32p5)
K08O00N 2008 ON (arc=31 days, H=20.4 ~282m) from Schiaparelli Obs. (Aug. 21.93p1 & 21.98p1) and Fiamene Obs. (Aug. 25.86p1)
K08N01S 2008 NS1 (Q=4.350 AU, arc=51 days, H=17.3 ~1.17 km) from SSS (Aug. 25.45p1)
K08M01R 2008 MR1 (arc=2 opp, H=18.5 ~676m) from ARO (Aug. 25.28-29p3)
K08L16N 2008 LN16 (arc=76 days, H=19.9 ~355m) from SSS (Aug. 25.66-67p2)
K08J20O 2008 JO20 (Q=5.288 AU, arc=2 opp, H=17.2 ~1.23 km) from the Catalina Sky Survey (CSS) (2007 Dec. 31.21p1)
K06W02Z 2006 WZ2 (arc=3 opp, H=16.8 ~1.48 km) from LINEAR (Aug. 25.41-44p4)
K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from ARO (Aug. 24.24-33p5)
K04X44N 2004 XN44 (arc=2 opp, H=18.4 ~708m) from LINEAR (Aug. 24.34-39p4)
K04S56B 2004 SB56 (arc=2 opp, H=19.2 ~490m) from LINEAR (Aug. 22.20-25p5) and Chabot Obs. (Aug. 25.29-30p2)
K04N08L 2004 NL8 (Q=4.417 AU, arc=3 opp, H=17.2 ~1.23 km) from LINEAR (Aug. 24.14-18p3)
K03R00M 2003 RM (Q=4.673 AU, arc=2 opp, H=20.2 ~309m) from LINEAR (Aug. 24.33-38p5)
K03F06Q 2003 FQ6 (arc=3 opp, H=21.0 ~214m) from ARO (Aug. 25.32-33p3)
J94A01W 1994 AW1 (arc=3 opp, H=17.5 ~1.07 km) from Schiaparelli Obs. (Aug. 21.88-89p2)
I9700 189700 2001 TA45 from Schiaparelli Obs. (Aug. 23.90-91p2)
I8452 188452 2004 HE62 from Posadas Obs. (Aug. 25.92p3) and Thompsonville Obs. (Aug. 26.19p6)
G4400 164400 2005 GN59 from Atlante Obs. (Aug. 26.04-05p3)
G3000 163000 2001 SW169 from LINEAR (Aug. 23.34-39p8)
A5140 105140 2000 NL10 from LINEAR (Aug. 22.27-32p5)
90403 90403 2003 YE45 from Chabot Obs. (Aug. 25.27-28p3), Fiamene Obs. (Aug. 25.84p1), and Thompsonville Obs. (Aug. 26.16-17p4)
90075 90075 2002 VU94 from LINEAR (Aug. 25.42-45p3)
88254 88254 2001 FM129 from SSS (Aug. 25.41-42p4)
86829 86829 2000 GR146 from SSS (Aug. 25.75-78p4)
66063 66063 1998 RO1 from LINEAR (Aug. 25.40-45p5)
65733 65733 1993 PC from LINEAR (Aug. 24.33-37p4)
12711 12711 1991 BB from LINEAR (Aug. 22.41-44p3)
11398 11398 1998 YP11 from SSS (Aug. 25.46-48p3)
07888 7888 1993 UC from LINEAR (Aug. 24.33-38p5)
05786 5786 Talos (1991 RC) from LINEAR (Aug. 24.33-38p4)
04179 4179 Toutatis (1989 AC) from LINEAR (Aug. 24.21-25p4) and Thompsonville Obs. (Aug. 26.15-16p6)
03352 3352 McAuliffe (1981 CW) from LINEAR (Aug. 23.33-37p4)
00887 887 Alinda (1918 DB) from LINEAR (Aug. 23.21-26p5)

Observers on 26 August '08

A total of 22 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 17 in MPECs 2008-Q40, 2008-Q41 & 2008-Q43 -- 2008 QZ, 2008 QU3, 2008 QT3, 2008 QD1, 2008 QC1, 2008 QA1, 2008 PF2, 2008 OX2, 2008 OS7, 2008 OO, 2008 ON8, 2008 OM8, 2008 OA6, 2008 MR1, 2008 MQ1, 2005 TZ51, 2003 FQ6
`J51`	Atlante Obs. in the Canary Islands, 1 in MPEC 2008-Q40 -- 164400
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2008-Q40 -- 2008 JO20
`G58`	Chabot Obs. in northern California, 2 in MPEC 2008-Q40 -- 2004 SB56, 90403
`106`	Crni Vrh Obs. in Slovenia, 2 in MPECs 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3
`113`	Drebach Obs. in Germany, 1 in MPEC 2008-Q41 -- 2008 QT3
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-Q43 -- 2008 QU3
`B23`	Fiamene Obs. in Italy, 2 in MPEC 2008-Q40 -- 2008 ON, 90403
`246`	KLENOT in the Czech Republic, 1 in MPEC 2008-Q41 -- 2008 QT3
`704`	LINEAR in New Mexico, 19 in MPECs 2008-Q40 & 2008-Q43 -- 2008 QZ, 2008 QU3, 2008 PL3, 2006 WZ2, 2004 XN44, 2004 SB56, 2004 NL8, 2003 RM, 90075, 66063, 65733, 163000, 12711, 105140, 7888, 5786, 4179, 3352, 887
`A99`	Monte Baldo Obs. in Italy, 1 in MPEC 2008-Q43 -- 2008 QU3
`J53`	Posadas Obs. in Spain, 1 in MPEC 2008-Q40 -- 188452
`H59`	Prairie Grass Obs. in Indiana, 1 in MPEC 2008-Q43 -- 2008 QU3
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2008-Q41 -- 2008 QT3
`461`	SZTE Asteroid Program in Hungary, 1 in MPEC 2008-Q42 -- 2007 VH305
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2008-Q41 -- 2008 QT3
`204`	Schiaparelli Obs. in Italy, 6 in MPECs 2008-Q40, 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3, 2008 QB, 2008 ON, 1994 AW1, 189700
`E12`	Siding Spring Survey (SSS) in New South Wales, 10 in MPEC 2008-Q40 -- 2008 QD1, 2008 QC1, 2008 QC, 2008 QB, 2008 QA1, 2008 NS1, 2008 LN16, 88254, 86829, 11398
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-Q40 -- 2008 QZ, 2008 OM
`6735`	Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3
`B18`	Terskol Obs. in Russia, 2 in MPECs 2008-Q41 & 2008-Q43 -- 2008 QU3, 2008 QT3
`H53`	Thompsonville Obs. in Illinois, 3 in MPEC 2008-Q40 -- 90403, 188452, 4179

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

Impact Risk Monitoring on 26 August '08

**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.
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 QT3	JPL Sentry	1918	2016-2107	209	1.5e-06	-2.68	-3.23	0	JPL: "Analysis based on 41 observations spanning 1.4330 days (2008-Aug-24.89792 to 2008-Aug-26.3309)." Diameter approximately 0.613 km. from mean, weighted H=18.7.

2008 QC1	JPL Sentry	1453	R E M O V E D						JPL: Risk listing removed at 0850 UTC.

2008 QY	NEODyS	1453	2018-2079	5	4.45e-10	-6.11	-6.32	0	NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2008/08/21.451 to 2008/08/23.473."

2008 OO	JPL Sentry	1453	2100	1	7.3e-07	-3.62	-3.62	0	JPL: "Analysis based on 100 observations spanning 30.072 days (2008-Jul-26.09211 to 2008-Aug-25.16363)." Diameter approximately 0.380 km. from mean, weighted H=19.7.

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 26 August '08

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

1918	Noted that JPL Sentry has posted 2008 QT3 as an impact risk - see above
1759	Grabbed MPEC 2008-Q42 - 2007 VH305 - see above Grabbed MPEC 2008-Q43 - 2008 QU3 - see above
1708	Grabbed MPEC 2008-Q41 - 2008 QT3 - see above
1453	Noted that JPL Sentry has updated its 2008 OO risk assessment - see above Noted that JPL Sentry has removed 2008 QC1 as an impact risk - see above Noted that NEODyS has posted 2008 QY as an impact risk - see above Grabbed MPEC 2008-Q40 - Daily Orbit Update - see above

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