2008-11-23 Tracking News

Contents on 23 November '08

IAU Minor Planet Center
- NEOCP Activity -- five listings: 2 new, 3 updated
- New MPECs -- two MPECs
Observers -- 21 observing facilities
Impact Risk Monitoring -- seven 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 23 November '08

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

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and three updated listings. All of these were "one nighters." So far The Tracking News has counted a total of six 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 23 November '08

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-W54 time-stamped "07:08 UT" - Daily Orbit Update - see below
MPEC 2008-W55 time-stamped "23:20 UT" - 2008 WB59

MPEC 2008-W55 - "23:20 UT" - 2008 WB59

K08W59B 2008 WB59 (H=19.0 ~537m) was discovered at 0845 UT on 23 Nov. by the Catalina Sky Survey (CSS), which observed it at Nov. 23.36-40p5 and 23.50p2. The discovery was confirmed by Jim Young via Table Mtn. Obs. (Nov. 23.49-51p4) and Farra d'Isonzo Obs. (Nov. 23.87-89p3).

<< DOU on 23 Nov. '08 >> MPEC 2008-W54 - "07:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08W32X 2008 WX32 (arc=1 day, H=18.9 ~562m) from Astronomical Research Obs. (ARO) (Nov. 22.09-10p3)
K08W32W 2008 WW32 (arc=1 day, H=21.4 ~178m) from Kanab Obs. (Nov. 22.16p1 & 22.21p1)
K08W32K 2008 WK32 (arc=1 day, H=19.7 ~389m) from ARO (Nov. 22.15-16p3) and the Spacewatch 1.8m telescope (Nov. 22.44-45p3)
K08W14D 2008 WD14 (small asteroid, arc=2 days, H=22.8 ~93m) from Spacewatch 1.8m (Nov. 22.13-14p3), the Siding Spring Survey (SSS) (Nov. 22.42p2 & 22.47p1), and Pla D'Arguines Obs. (Nov. 22.75-78p5)
K08V14L 2008 VL14 (arc=13 days, H=21.1 ~204m) from Spacewatch 1.8m (Nov. 22.28-29p2)
K08U99W 2008 UW99 (small asteroid, arc=22 days, H=24.7 ~39m) from ARO (Nov. 22.17-20p3 at V=22.1)
Observations of recently (no longer) risk-listed objects
K08W14A 2008 WA14 (small asteroid, arc=2 days, H=22.9 ~89m) from ARO (Nov. 22.23-24p3)
K08W00L 2008 WL (Q=4.507 AU, arc=3 days, H=21.7 ~155m) from ARO (Nov. 21.42p3)
K08U07E 2008 UE7 (arc=28 days, H=20.5 ~269m) from ARO (Nov. 21.45p3 & 22.27-28p3), Petit Jean Mtn. South Obs. (PJMSO) (Nov. 22.38p6), Hamamatsu-Yuto Obs. (Nov. 22.65-67p7), Verona Obs. (Nov. 22.96p4), and Peschiera del Garda Obs. (Nov. 23.01-03p3)
K04X03K 2004 XK3 (small asteroid, arc=2 opp, H=24.3 ~47m) from Hamamatsu-Yuto Obs. (Nov. 22.50-54p9 & 22.59-61p4) and Verona Obs. (Nov. 22.87-89p4)
Observations of small asteroids (H>22.0)
K08W14F 2008 WF14 (arc=1 day, H=24.9 ~35m) from Spacewatch 1.8m (Nov. 22.37-38p3)
K08W00K 2008 WK (arc=3 days, H=23.1 ~81m) from ARO (Nov. 21.41p3)
K08W00D 2008 WD (arc=3 days, H=25.8 ~23m) from ARO (Nov. 21.43p2) and Great Shefford Obs. (Nov. 23.00-04p6)
Observations of other objects
K08W00N 2008 WN (arc=2 days, H=18.5 ~676m) from ARO (Nov. 21.41-42p3)
K08V14K 2008 VK14 (arc=13 days, H=19.1 ~513m) from LINEAR (Nov. 21.39-44p5) and ARO (Nov. 21.43-44p3)
K08V14G 2008 VG14 (Q=4.478 AU, arc=15 days, H=20.2 ~309m) from LINEAR (Nov. 22.28-32p8)
K08V04U 2008 VU4 (Q=4.211 AU, arc=16 days, H=17.5 ~1.07 km) from LINEAR (Nov. 22.35-41p5) and Peschiera del Garda Obs. (Nov. 23.04-05p3)
K08V00N 2008 VN (Q=5.011 AU, arc=2 opp, H=16.8 ~1.48 km) from ARO (Nov. 21.46p3)
K08V00F 2008 VF (arc=21 days, H=19.5 ~426m) from ARO (Nov. 21.44p3 & 22.26p1)
K08TF7K 2008 TK157 (arc=61 days, H=20.5 ~269m) from Peschiera del Garda Obs. (Nov. 22.84-88p2)
K08T10R 2008 TR10 (arc=45 days, H=20.5 ~269m) from ARO (Nov. 22.02-06p3 at V=23.1-5)
K08S07P 2008 SP7 (Q=4.200 AU, arc=60 days, H=18.9 ~562m) from LINEAR (Nov. 22.27-32p5)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.4 ~708m) from Verona Obs. (Nov. 14.88-91p4), San Vito Obs. (Nov. 22.86-87p3), and Fiamene Obs. (Nov. 22.96-97p4)
K08S00E 2008 SE (arc=64 days, H=19.4 ~446m) from Fiamene Obs. (Nov. 22.93-94p2)
K08R98G 2008 RG98 (arc=74 days, H=17.2 ~1.23 km) from PJMSO (Nov. 22.10-11p6) and LINEAR (Nov. 22.13-19p5)
K08R24Y 2008 RY24 (arc=3 opp, H=17.8 ~933m) from PJMSO (Nov. 22.11-12p6)
K08Q03T 2008 QT3 (arc=89 days, H=18.6 ~645m) from LINEAR (Nov. 22.07-11p4)
K08M01R 2008 MR1 (arc=3 opp, H=18.4 ~708m) from LINEAR (Nov. 22.26-31p5), Peschiera del Garda Obs. (Nov. 22.93-94p2), and Fiamene Obs. (Nov. 22.95p2)
K08M00Z 2008 MZ (Q=4.207 AU, arc=160 days, H=18.6 ~645m) from PJMSO (Nov. 22.38-40p6) and Fiamene Obs. (Nov. 22.89-90p3)
K06SL7Z 2006 SZ217 (arc=3 opp, H=17.3 ~1.17 km) from North Obs. (Nov. 21.99-00p4), PJMSO (Nov. 22.40-41p6), Hamamatsu-Yuto Obs. (Nov. 22.61-64p6), Fiamene Obs. (Nov. 22.97-98p4), and Verona Obs. (Nov. 22.98p4)
K04X44N 2004 XN44 (arc=2 opp, H=18.4 ~708m) from David Tholen's team on Mauna Kea (Nov. 20.28p2 at R=22.1)
K02V94Y 2002 VY94 (Q=5.375 AU, arc=2 opp, H=16.7 ~1.55 km) from LINEAR (Nov. 22.32-37p5)
K01X00Q 2001 XQ (Q=6.249 AU, arc=2 opp, H=19.2 ~490m) from Spacewatch 1.8m (Nov. 22.41-42p3)
K01W25A 2001 WA25 (arc=4 opp, H=18.5 ~676m) from LINEAR (Nov. 21.45-50p5)
K01W02J 2001 WJ2 (arc=3 opp, H=19.8 ~371m) from LINEAR (Nov. 22.34-38p4)
K01O25G 2001 OG25 (arc=4 opp, H=19.8 ~371m) from Spacewatch 1.8m (Nov. 22.24-25p3)
K01L05M 2001 LM5 (arc=3 opp, H=19.2 ~490m) from LINEAR (Nov. 21.26-31p5)
J96T09E 1996 TE9 (arc=3 opp, H=18.8 ~589m) from PJMSO (Nov. 22.12-13p6)
J94A01W 1994 AW1 (arc=3 opp, H=17.6 ~1.02 km) from PJMSO (Nov. 22.02p6)
J9801 199801 2007 AE12 from Fiamene Obs. (Nov. 22.90-91p5)
J4126 194126 2001 SG276 from LINEAR (Nov. 22.21-26p4)
G2900 162900 2001 HG31 from New Millennium Obs. (Nov. 20.98p2) and LINEAR (Nov. 21.25-31p5 & 22.09-14p4)
G2679 162679 2000 TK1 from New Millennium Obs. (Nov. 20.80-81p3)
G2149 162149 1998 YQ11 from LINEAR (Nov. 22.20-25p5)
E1765 141765 2002 MP3 from Goodricke-Pigott Obs. (Nov. 21.46-49p3) and CSS (Nov. 22.44-46p4)
96315 96315 1997 AP10 from the Mt. Lemmon Survey (MLS) (Nov. 22.41-42p4)
85774 85774 1998 UT18 from CSS (Nov. 22.41-43p4)
53430 53430 1999 TY16 from New Millennium Obs. (Nov. 20.98p2)
52768 52768 1998 OR2 from CSS (Nov. 22.41-43p4)
18882 18882 1999 YN4 from CSS (Nov. 22.52-53p8)
17511 17511 1992 QN from LINEAR (Nov. 22.42-48p5)
16834 16834 1997 WU22 from CSS (Nov. 22.44-46p4)
12538 12538 1998 OH from LINEAR (Nov. 22.15-19p4)
04183 4183 Cuno (1959 LM) from New Millennium Obs. (Nov. 20.87-90p4)
03200 3200 Phaethon (1983 TB) from New Millennium Obs. (Nov. 20.96p2)
01916 1916 Boreas (1953 RA) from New Millennium Obs. (Nov. 20.97p2)
01620 1620 Geographos (1951 RA) from New Millennium Obs. (Nov. 20.89-93p6)

Observers on 23 November '08

A total of 21 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 13 in MPEC 2008-W54 -- 2008 WX32, 2008 WN, 2008 WL, 2008 WK32, 2008 WK, 2008 WD, 2008 WA14, 2008 VN, 2008 VK14, 2008 VF, 2008 UW99, 2008 UE7, 2008 TR10
`703`	Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2008-W54 & 2008-W55 -- 2008 WB59, 85774, 52768, 18882, 16834, 141765
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-W55 -- 2008 WB59
`B23`	Fiamene Obs. in Italy, 6 in MPEC 2008-W54 -- 2008 SQ1, 2008 SE, 2008 MZ, 2008 MR1, 2006 SZ217, 199801
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-W54 -- 141765
`J95`	Great Shefford Obs. in England, 1 in MPEC 2008-W54 -- 2008 WD
`379`	Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2008-W54 -- 2008 UE7, 2006 SZ217, 2004 XK3
`682`	Kanab Obs. in Utah, 1 in MPEC 2008-W54 -- 2008 WW32
`704`	LINEAR in New Mexico, 16 in MPEC 2008-W54 -- 2008 VU4, 2008 VK14, 2008 VG14, 2008 SP7, 2008 RG98, 2008 QT3, 2008 MR1, 2002 VY94, 2001 WJ2, 2001 WA25, 2001 LM5, 194126, 17511, 162900, 162149, 12538
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-W54 -- 2004 XN44
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-W54 -- 96315
`A24`	New Millennium Obs. in Italy, 7 in MPEC 2008-W54 -- 53430, 162900, 162679, 4183, 3200, 1916, 1620
`J69`	North Obs. in England, 1 in MPEC 2008-W54 -- 2006 SZ217
`A53`	Peschiera del Garda Obs. in Italy, 4 in MPEC 2008-W54 -- 2008 VU4, 2008 UE7, 2008 TK157, 2008 MR1
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2008-W54 -- 2008 UE7, 2008 RY24, 2008 RG98, 2008 MZ, 2006 SZ217, 1996 TE9, 1994 AW1
`941`	Pla D'Arguines Obs. in Spain, 1 in MPEC 2008-W54 -- 2008 WD14
`233`	San Vito Obs. in Italy, 1 in MPEC 2008-W54 -- 2008 SQ1
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2008-W54 -- 2008 WD14
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2008-W54 -- 2008 WK32, 2008 WF14, 2008 WD14, 2008 VL14, 2001 XQ, 2001 OG25
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-W55 -- 2008 WB59
`A48`	Verona Obs. in Italy, 4 in MPEC 2008-W54 -- 2008 UE7, 2008 SQ1, 2006 SZ217, 2004 XK3

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

Impact Risk Monitoring on 23 November '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2359 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 WY32	NEODyS	2301	2010-2073	70	2.66e-08	-5.73	-6.03	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/11/22.176 to 2008/11/22.251."

2008 WX32	NEODyS	1512	2013-2083	8	9.03e-10	-5.34	-5.38	0	NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/11/21.293 to 2008/11/22.329."
2008 WX32	JPL Sentry	1511	2033-2082	7	2.2e-09	-5.67	-5.96	0	JPL: "Analysis based on 20 observations spanning 1.0359 days (2008-Nov-21.29224 to 2008-Nov-22.32811)." Diameter approximately 0.541 km. from mean, weighted H=19.0.

2008 WW32	NEODyS	1512	2021-2080	2	2.05e-10	-8.04	-8.18	0	NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2008/11/21.130 to 2008/11/22.206."
2008 WW32	JPL Sentry	1511	2032-2080	2	1.3e-09	-6.74	-6.77	0	JPL: "Analysis based on 14 observations spanning 1.0767 days (2008-Nov-21.12895 to 2008-Nov-22.20561)." Diameter approximately 0.200 km. from mean, weighted H=21.1.

2008 WK32	JPL Sentry	1511	2034-2098	6	5.5e-09	-6.14	-6.53	0	JPL: "Analysis based on 20 observations spanning 1.1217 days (2008-Nov-21.32959 to 2008-Nov-22.45132)." Diameter approximately 0.323 km. from mean, weighted H=20.1.
2008 WK32	NEODyS	1511	R E M O V E D						-

2008 WD14	JPL Sentry	1511	R E M O V E D						JPL: Risk listing removed at 0952 UTC.

2008 VL14	NEODyS	1512	2076	2	6.86e-07	-4.01	-4.23	0	NEODyS: "Based on 47 optical observations (of which 1 are rejected as outliers) from 2008/11/09.266 to 2008/11/22.289."
2008 VL14	JPL Sentry	1511	2071-2076	3	7.7e-07	-3.95	-4.25	0	JPL: "Analysis based on 46 observations spanning 13.022 days (2008-Nov-09.2656 to 2008-Nov-22.28778)." Diameter approximately 0.202 km. from mean, weighted H=21.1.

2008 UW99	JPL Sentry	1511	2093	1	8.6e-07	-6.26	-6.26	0	JPL: "Analysis based on 45 observations spanning 21.741 days (2008-Oct-31.45784 to 2008-Nov-22.1992)." Diameter approximately 0.039 km. from mean, weighted H=24.7.

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 23 November '08

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

2359	Grabbed MPEC 2008-W55 - 2008 WB59 - see above
2300	Noted that NEODyS has posted 2008 WY32 as an impact risk - see above
1512	Noted that NEODyS has updated its 2008 VL14 risk assessment - see above Grabbed MPEC 2008-W54 - Daily Orbit Update - see above
1511	Noted that JPL Sentry has updated its 2008 UW99 risk assessment - see above Noted that JPL Sentry has updated its 2008 VL14 risk assessment - see above Noted that JPL Sentry has removed 2008 WD14 as an impact risk - see above Noted that JPL Sentry has updated its 2008 WK32 risk assessment - see above Noted that NEODyS has removed 2008 WK32 as an impact risk - see above Noted that JPL Sentry has updated its 2008 WW32 risk assessment - see above Noted that NEODyS has posted 2008 WW32 as an impact risk - see above Noted that JPL Sentry has posted 2008 WX32 as an impact risk - see above Noted that NEODyS has posted 2008 WX32 as an impact risk - see above

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