2008-08-28 Tracking News

Contents on 28 August '08

IAU Minor Planet Center
- NEOCP Activity -- two listings: 1 new, 1 updated
- New MPECs -- nine MPECs
Observers -- 24 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 28 August '08

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and one updated listing. Both of these were "one nighters." So far The Tracking News has counted a total of ten 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 28 August '08

Minor Planet Electronic Circulars

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

MPEC 2008-Q45 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2008-Q46 time-stamped "13:37 UT" - 2008 QS11 - see below
MPEC 2008-Q47 time-stamped "13:42 UT" - 2008 QU11 - see below
MPEC 2008-Q48 time-stamped "13:47 UT" - 2008 QV11 - see below
MPEC 2008-Q49 time-stamped "13:50 UT" - 2008 QW11 - see below
MPEC 2008-Q50 time-stamped "14:28 UT" - 2008 QT11 - see below
MPEC 2008-Q51 time-stamped "19:42 UT" - Comet P/2008 Q2 (Ory) - see below
MPEC 2008-Q52 time-stamped "19:48 UT" - Comet C/2008 Q3 (Garradd) - see below
MPEC 2008-Q53 time-stamped "22:15 UT" - 2005 FH

MPEC 2008-Q53 - "22:15 UT" - 2005 FH

K05F00H 2005 FH (Q=4.468 AU, H=17.5 ~1.07 km) from Astronomical Research Obs. (ARO) (Aug. 1.24-28p3 at V=21.8-22.1 & 28.15-19p3 at V=21.7-22.1)

MPEC 2008-Q52 - "19:48 UT" - Comet C/2008 Q3 (Garradd)

CK08Q030 C/2008 Q3 (Garradd) (i=139.8°, q=2.530 AU, TP=2009 July 1.896 TT) from the Siding Spring Survey (SSS) (Aug. 27.64-68p4, 27.74p1 & 28.70-72p3) and Mt. John Obs. (Aug. 28.48-51p5 & 28.70-72p5)

MPEC 2008-Q51 - "19:42 UT" - Comet P/2008 Q2 (Ory)

PK08Q020 P/2008 Q2 (Ory) (q=1.370 AU, Q=5.204 AU, TP=2008 Oct. 23.018 TT) from Jurassien-Vicques Obs. (Aug. 27.09-12p5 & 27.93-95p5), Drebach Obs. (Aug. 27.00-02p4), Terskol Obs. (Aug. 28.05-06p4), Schiaparelli Obs. (Aug. 28.12-14p2), ARO (Aug. 28.28p3), Sandlot Obs. (Aug. 28.32-33p3), Table Mtn. Obs. (Aug. 28.41-43p4), and Mt. John Obs. (Aug. 28.58-59p3)

MPEC 2008-Q50 - "14:28 UT" - 2008 QT11

K08Q11T 2008 QT11 (risk-listed, H=22.5 ~107m) was discovered at 1818 UT on 27 Aug. by SSS, which observed it at Aug. 27.76-81p4. The discovery was confirmed by Mt. John Obs. (Aug. 28.52-53p3).

MPEC 2008-Q49 - "13:50 UT" - 2008 QW11

K08Q11W 2008 QW11 (small asteroid, H=23.5 ~68m) was discovered at 1700 UT on 26 Aug. by SSS, which observed it at Aug. 26.71-78p7 and 27.62p1. The discovery was confirmed by ARO (Aug. 27.36-37p3), Tiki Obs. (Aug. 27.59-60p2), and Jim Young via Table Mtn. Obs. (Aug. 28.45-46p4).

MPEC 2008-Q48 - "13:47 UT" - 2008 QV11

K08Q11V 2008 QV11 (H=21.3 ~186m) was discovered at 1320 UT on 26 Aug. by SSS, which observed it at Aug. 26.56-59p4, 26.64-65p3, 27.54-55p3, and 28.49p1. The discovery was confirmed by Grove Creek Obs. (Aug. 28.43-45p3) and Mt. John Obs. (Aug. 28.44-45p4).

MPEC 2008-Q47 - "13:42 UT" - 2008 QU11

K08Q11U 2008 QU11 (small asteroid, Earth MOID=7.5 LD, H=25.4 ~28m) was discovered at 0628 UT on 26 Aug. by LINEAR, which observed it at Aug. 26.27-32p5. The discovery was confirmed by Naef Obs. (Aug. 27.92-94p6), Farra d'Isonzo Obs. (Aug. 27.93-95p2), KLENOT (Aug. 27.94p4), Drebach Obs. (Aug. 27.98p4), Remanzacco Obs. (Aug. 27.98p1), Young/Table Mtn. (Aug. 28.23-26p4), Sandlot Obs. (Aug. 28.30-31p3), and Mt. John Obs. (Aug. 28.54p4). This object was within ten lunar distances (LD) of Earth, reaching 7.7 LD on 22 Aug.

MPEC 2008-Q46 - "13:37 UT" - 2008 QS11

K08Q11S 2008 QS11 (risk-listed, Earth MOID=5.4 LD, H=19.7 ~389m) was discovered at 1517 UT on 27 Aug. by SSS, which observed it at Aug. 27.64-68p4 and 27.72-80p8. The discovery was confirmed by Mt. John Obs. (Aug. 28.46p3).

<< DOU on 28 Aug. '08 >> MPEC 2008-Q45 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08Q03T 2008 QT3 (arc=3 days, H=18.4 ~708m) from Crni Vrh Obs. (Aug. 26.88-89p12), ARO (Aug. 27.23-24p5), KLENOT (Aug. 27.89-90p7), and Eschenberg Obs. (Aug. 27.98p4)
K08O01O 2008 OO1 (small asteroid, arc=32 days, H=24.6 ~41m) from ARO (Aug. 27.20-26p3 at V=23.3-6)
Observations of recently (no longer) risk-listed objects
K08Q01C 2008 QC1 (small asteroid, Q=4.265 AU, arc=4 days, H=24.2 ~49m) from ARO (Aug. 27.38-39p6)
K08O08Q 2008 OQ8 (almost small, arc=28 days, H=21.9 ~141m) from ARO (Aug. 27.35-36p3)
K08O08P 2008 OP8 (arc=28 days, H=19.7 ~389m) from ARO (Aug. 27.25-26p3)
Observations of small asteroids (H>22.0)
K08Q02M 2008 QM2 (arc=4 days, H=23.8 ~59m) from ARO (Aug. 27.31-32p6)
K08Q01A 2008 QA1 (arc=4 days, H=22.5 ~107m) from ARO (Aug. 27.30p6)
Observations of almost-small asteroids (21.7<H<=22.0)
K08Q00F 2008 QF (arc=6 days, H=21.8 ~148m) from ARO (Aug. 27.21-22p3)
Observations of other objects
K08O01X 2008 OX1 (arc=32 days, H=21.5 ~170m) from ARO (Aug. 27.11-13p3)
K08N00U 2008 NU (Q=4.203 AU, arc=57 days, H=17.6 ~1.02 km) from Petit Jean Mtn. South Obs. (PJMSO) (Aug. 27.33-34p6)
K08M01R 2008 MR1 (arc=2 opp, H=18.5 ~676m) from PJMSO (Aug. 27.35-36p6)
K08M01H 2008 MH1 (Q=4.263 AU, arc=60 days, H=18.4 ~708m) from ARO (Aug. 27.15-16p3)
K08J30Z 2008 JZ30 (arc=105 days, H=18.5 ~676m) from ARO (Aug. 27.32-34p4)
K08J26R 2008 JR26 (arc=106 days, H=19.9 ~355m) from ARO (Aug. 27.12-14p3)
K08G00F 2008 GF (arc=148 days, H=20.7 ~245m) from ARO (Aug. 27.08-10p3)
K06W02Z 2006 WZ2 (arc=3 opp, H=16.8 ~1.48 km) from PJMSO (Aug. 27.37-38p5)
K06S06D 2006 SD6 (arc=2 opp, H=20.3 ~295m) from David Tholen's team on Mauna Kea (Aug. 13.53p2)
K05R34D 2005 RD34 (arc=2 opp, H=20.2 ~309m) from PJMSO (Aug. 27.26-27p3)
K05R34C 2005 RC34 (arc=2 opp, H=19.7 ~389m) from PJMSO (Aug. 27.38-39p5) and Eschenberg Obs. (Aug. 27.89-90p4)
K04S56B 2004 SB56 (arc=2 opp, H=19.3 ~467m) from Eschenberg Obs. (Aug. 27.80-81p7)
K03R00M 2003 RM (Q=4.673 AU, arc=2 opp, H=20.1 ~323m) from La Sagra Obs. (Aug. 27.03-06p3)
K02E03A 2002 EA3 (arc=4 opp, H=20.1 ~323m) from SSS (Aug. 27.76-81p4)
K01SQ9W 2001 SW269 (arc=4 opp, H=19.3 ~467m) from Alter Satzberg Obs. (Aug. 27.81-83p4)
J98W06Z 1998 WZ6 (arc=5 opp, H=17.3 ~1.17 km) from SSS (Aug. 27.78-81p2)
J0208 190208 2006 AQ from Tholen et al. (Aug. 13.40p2)
I8452 188452 2004 HE62 from Thompsonville Obs. (Aug. 28.10p6)
G4400 164400 2005 GN59 from Eschenberg Obs. (Aug. 27.79p3) and El Guijo Obs. (Aug. 27.97-98p3)
G2900 162900 2001 HG31 from La Sagra Obs. (Aug. 27.14-17p3)
D7199 137199 1999 KX4 from SSS (Aug. 27.69-71p4)
90403 90403 2003 YE45 from Thompsonville Obs. (Aug. 28.15p6)
66008 66008 1998 QH2 from PJMSO (Aug. 27.27-28p5)
65690 65690 1991 DG from PJMSO (Aug. 27.28-29p5)
08567 8567 1996 HW1 from El Guijo Obs. (Aug. 28.01-02p3)
04179 4179 Toutatis (1989 AC) from Thompsonville Obs. (Aug. 28.11p6)
01620 1620 Geographos (1951 RA) from Crni Vrh Obs. (Aug. 27.02-05p4)

Observers on 28 August '08

A total of 24 observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2008-Q45 -- 2001 SW269
`H55`	Astronomical Research Obs. (ARO) in Illinois, 16 in MPECs 2008-Q45, 2008-Q49, 2008-Q51 & 2008-Q53 -- 2008 QW11, 2008 QT3, 2008 QM2, 2008 QF, 2008 QC1, 2008 QA1, P/2008 Q2, 2008 OX1, 2008 OQ8, 2008 OP8, 2008 OO1, 2008 MH1, 2008 JZ30, 2008 JR26, 2008 GF, 2005 FH
`106`	Crni Vrh Obs. in Slovenia, 2 in MPEC 2008-Q45 -- 2008 QT3, 1620
`113`	Drebach Obs. in Germany, 2 in MPECs 2008-Q47 & 2008-Q51 -- 2008 QU11, P/2008 Q2
`J27`	El Guijo Obs. in Spain, 2 in MPEC 2008-Q45 -- 164400, 8567
`151`	Eschenberg Obs. in Switzerland, 4 in MPEC 2008-Q45 -- 2008 QT3, 2005 RC34, 2004 SB56, 164400
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-Q47 -- 2008 QU11
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2008-Q48 -- 2008 QV11
`185`	Jurassien-Vicques Obs. in Switzerland, 1 in MPEC 2008-Q51 -- P/2008 Q2
`246`	KLENOT in the Czech Republic, 2 in MPECs 2008-Q45 & 2008-Q47 -- 2008 QU11, 2008 QT3
`704`	LINEAR in New Mexico, 1 in MPEC 2008-Q47 -- 2008 QU11
`J75`	La Sagra Obs. in Spain, 2 in MPEC 2008-Q45 -- 2003 RM, 162900
`5682`	David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2008-Q45 -- 2006 SD6, 190208
`474`	Mt. John Obs. in New Zealand, 6 in MPECs 2008-Q46, 2008-Q47, 2008-Q48, 2008-Q50, 2008-Q51 & 2008-Q52 -- 2008 QV11, 2008 QU11, 2008 QT11, 2008 QS11, C/2008 Q3, P/2008 Q2
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2008-Q47 -- 2008 QU11
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2008-Q45 -- 2008 NU, 2008 MR1, 2006 WZ2, 2005 RD34, 2005 RC34, 66008, 65690
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2008-Q47 -- 2008 QU11
`H36`	Sandlot Obs. in Kansas, 2 in MPECs 2008-Q47 & 2008-Q51 -- 2008 QU11, P/2008 Q2
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2008-Q51 -- P/2008 Q2
`E12`	Siding Spring Survey (SSS) in New South Wales, 8 in MPECs 2008-Q45, 2008-Q46, 2008-Q48, 2008-Q49, 2008-Q50 & 2008-Q52 -- 2008 QW11, 2008 QV11, 2008 QT11, 2008 QS11, C/2008 Q3, 2002 EA3, 1998 WZ6, 137199
`673`	Table Mtn. Obs. in southern California, 1 in MPEC 2008-Q51 -- P/2008 Q2
`6735`	Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-Q47 & 2008-Q49 -- 2008 QW11, 2008 QU11
`B18`	Terskol Obs. in Russia, 1 in MPEC 2008-Q51 -- P/2008 Q2
`H53`	Thompsonville Obs. in Illinois, 3 in MPEC 2008-Q45 -- 90403, 188452, 4179
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2008-Q49 -- 2008 QW11

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

Impact Risk Monitoring on 28 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 QT11	JPL Sentry	1629	2100-2108	4	1.5e-09	-7.46	-7.85	0	JPL: "Analysis based on 7 observations spanning .76515 days (2008-Aug-27.76274 to 2008-Aug-28.52789)." Diameter approximately 0.141 km. from mean, weighted H=21.9.

2008 QS11	JPL Sentry	1629	2011-2107	189	2.6e-07	-3.41	-3.61	0	JPL: "Analysis based on 15 observations spanning .82688 days (2008-Aug-27.63741 to 2008-Aug-28.46429)." Diameter approximately 0.409 km. from mean, weighted H=19.6.

2008 QT3	NEODyS	1540	2016	1	6.32e-11	-6.39	-6.39	0	NEODyS: "Based on 74 optical observations (of which 0 are rejected as outliers) from 2008/08/24.899 to 2008/08/27.982."
2008 QT3	JPL Sentry	1539	2016-2068	6	2.2e-09	-5.09	-5.43	0	JPL: "Analysis based on 74 observations spanning 3.0837 days (2008-Aug-24.89792 to 2008-Aug-27.98159)." Diameter approximately 0.663 km. from mean, weighted H=18.5.

2008 OO1	JPL Sentry	1539	2107	1	1.6e-07	-6.85	-6.85	0	JPL: "Analysis based on 42 observations spanning 31.710 days (2008-Jul-26.55201 to 2008-Aug-27.26171)." Diameter approximately 0.041 km. from mean, weighted H=24.6.

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 28 August '08

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

2300	Grabbed MPEC 2008-Q53 - 2005 FH - see above
2133	Grabbed MPEC 2008-Q51 - Comet P/2008 Q2 (Ory) - see above Grabbed MPEC 2008-Q52 - Comet C/2008 Q3 (Garradd) - see above
1629	Noted that JPL Sentry has posted 2008 QS11 as an impact risk - see above Noted that JPL Sentry has posted 2008 QT11 as an impact risk - see above
1540	Noted that NEODyS has updated its 2008 QT3 risk assessment - see above Grabbed MPEC 2008-Q45 - Daily Orbit Update - see above Grabbed MPEC 2008-Q46 - 2008 QS11 - see above Grabbed MPEC 2008-Q47 - 2008 QU11 - see above Grabbed MPEC 2008-Q48 - 2008 QV11 - see above Grabbed MPEC 2008-Q49 - 2008 QW11 - see above Grabbed MPEC 2008-Q50 - 2008 QT11 - see above
1539	Noted that JPL Sentry has updated its 2008 OO1 risk assessment - see above Noted that JPL Sentry has updated its 2008 QT3 risk assessment - see above

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