2009-01-23 Tracking News

Contents on 23 January '09

IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- one MPEC
Observers -- fourteen observing facilities
Impact Risk Monitoring -- two 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 January '09

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs on 23 January '09

Minor Planet Electronic Circulars

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

<< DOU on 23 Jan. '09 >> MPEC 2009-B48 - "07:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K09B00E 2009 BE (small asteroid, arc=6 days, H=26.2 ~19m) from Siegen Obs. (Jan. 21.09-11p3) and Petit Jean Mtn. South Obs. (PJMSO) (Jan. 22.39-40p12)
K09B00D 2009 BD (small asteroid, arc=6 days, H=28.8 ~6m) from S. Nazarov via Crimean Astrophysical Obs. (CrAO) (Jan. 20.98-99p25) and Astronomical Research Obs. (ARO) (Jan. 22.20-21p3)
Observations of recently (no longer) risk-listed objects
K09B02E 2009 BE2 (arc=6 days, H=18.9 ~562m) from ARO (Jan. 22.05-08p3 at V=21.9-22.2)
Observations of small asteroids (H>22.0)
K09B02J 2009 BJ2 (arc=3 days, H=27.1 ~13m) from Great Shefford Obs. (Jan. 20.90-91p2)
K09B02H 2009 BH2 (arc=5 days, H=22.4 ~112m) from PJMSO (Jan. 22.40-41p7)
K09B02F 2009 BF2 (arc=6 days, H=25.8 ~23m) from ARO (Jan. 22.22-23p3) and LINEAR (Jan. 22.33-37p4)
K09B00G 2009 BG (arc=6 days, H=25.5 ~27m) from ARO (Jan. 22.18p4) and PJMSO (Jan. 22.37p6)
Observations of other objects
K09B02M 2009 BM2 (Q=4.255 AU, arc=4 days, H=19.8 ~371m) from Siegen Obs. (Jan. 21.16-17p3), ARO (Jan. 22.26p4), LINEAR (Jan. 22.33-38p5), and PJMSO (Jan. 22.36p7)
K09B02L 2009 BL2 (arc=4 days, H=19.3 ~467m) from ARO (Jan. 22.13-14p3)
K09B00F 2009 BF (i=45.9°, arc=6 days, H=18.8 ~589m) from ARO (Jan. 22.17-19p3)
K09B00B 2009 BB (q=0.360 AU, Q=4.705 AU, arc=6 days, H=18.2 ~776m) from ARO (Jan. 22.03-04p3)
K09A16F 2009 AF16 (arc=7 days, H=21.2 ~195m) from ARO (Jan. 22.11-12p3) and PJMSO (Jan. 22.32-33p8)
K09A16D 2009 AD16 (Q=4.216 AU, arc=7 days, H=20.5 ~269m) from Urseanu Obs. (Jan. 18.97-99p5), Siegen Obs. (Jan. 21.01-02p3), and PJMSO (Jan. 22.31-32p8)
K09A15L 2009 AL15 (arc=15 days, H=21.4 ~178m) from ARO (Jan. 22.22-23p3)
K09A00T 2009 AT (Q=7.292 AU, arc=20 days, H=21.0 ~214m) from ARO (Jan. 22.10-12p3)
K09A00M 2009 AM (Q=4.774 AU, arc=21 days, H=21.4 ~178m) from ARO (Jan. 22.16-17p5)
K08X02E 2008 XE2 (arc=49 days, H=19.3 ~467m) from PJMSO (Jan. 22.38-39p5)
K08V00F 2008 VF (arc=75 days, H=19.4 ~446m) from Andrushivka Obs. (Nov. 1.06-07p3 & 1.11p1)
K08U95C 2008 UC95 (arc=85 days, H=18.6 ~645m) from PJMSO (Jan. 22.43p6)
K08S82H 2008 SH82 (arc=118 days, H=21.4 ~178m) from Bornheim Obs. (Dec. 29.83p3), Peschiera del Garda Obs. (Jan. 15.89-94p4), and ARO (Jan. 22.12-13p3)
K08Q03T 2008 QT3 (arc=151 days, H=18.9 ~562m) from Peschiera del Garda Obs. (Jan. 15.84-86p4), Siegen Obs. (Jan. 20.95-96p3), and Thompsonville Obs. (Jan. 23.04-06p6)
K08M05B 2008 MB5 (arc=206 days, H=19.2 ~490m) from PJMSO (Jan. 22.42-43p6)
K08E32A 2008 EA32 (IEO, Q=0.804 AU, arc=2 opp, H=16.5 ~1.70 km) from PJMSO (Jan. 22.05p6)
K08E05V 2008 EV5 (arc=2 opp, H=20.0 ~339m) from Bornheim Obs. (Dec. 28.92p3, 29.94-95p3 & 30.94p4) and Siegen Obs. (Jan. 9.99p2 & 10.82-83p3)
K06A02S 2006 AS2 (arc=4 opp, H=20.4 ~282m) from LINEAR (Jan. 22.27-32p5), PJMSO (Jan. 22.34-35p5), and Thompsonville Obs. (Jan. 23.06-08p6)
K05N01J 2005 NJ1 (arc=4 opp, H=18.5 ~676m) from LINEAR (Jan. 22.39-44p5)
K02V94Y 2002 VY94 (Q=5.375 AU, arc=2 opp, H=16.8 ~1.48 km) from Thompsonville Obs. (Jan. 23.11-15p6)
K01B16J 2001 BJ16 (arc=4 opp, H=18.4 ~708m) from LINEAR (Jan. 22.33-37p4)
J99C08W 1999 CW8 (arc=3 opp, H=18.6 ~645m) from PJMSO (Jan. 22.35p6)
K3015 203015 1999 YF3 from Inastars Obs. (Jan. 22.74-75p4)
K0840 200840 2001 XN254 from LINEAR (Jan. 22.15-20p4)
G2900 162900 2001 HG31 from Bornheim Obs. (Dec. 26.87-88p4 & 28.80-81p4)
G2361 162361 2000 AF6 from Bornheim Obs. (Dec. 26.94-95p4, 28.87-89p4, 29.87-88p4 & 30.82-83p2)
E2348 142348 2002 RX211 from Atlante Obs. (Jan. 22.94-95p3)
E1765 141765 2002 MP3 from Bornheim Obs. (Dec. 30.92-93p3)
B1253 111253 2001 XU10 from Remanzacco Obs. (Jan. 22.97-98p2)
89355 89355 2001 VS78 from Bornheim Obs. (Dec. 26.97-99p4, 28.89-91p5 & 29.91p3)
85867 85867 1999 BY9 from LINEAR (Jan. 22.41-44p4)
22753 22753 1998 WT from LINEAR (Jan. 22.33-38p5)
11405 11405 1999 CV3 from LINEAR (Jan. 22.08-11p3)
07358 7358 Oze (1995 YA3) from LINEAR (Jan. 22.21-26p5)
04179 4179 Toutatis (1989 AC) from Siegen Obs. (Jan. 21.04p3) and Atlante Obs. (Jan. 22.99-00p3)
04055 4055 Magellan (1985 DO2) from LINEAR (Jan. 22.22-27p5)
03360 3360 Syrinx (1981 VA) from LINEAR (Jan. 22.09-12p4)
02368 2368 Beltrovata (1977 RA) from LINEAR (Jan. 22.26-31p5)
01864 1864 Daedalus (1971 FA) from Siegen Obs. (Jan. 9.94-96p2)

Observers on 23 January '09

Fourteen observing facilities appear in today's MPEC.

Code	Observer / observatory
`A50`	Andrushivka Obs. in the Ukraine, 1 in MPEC 2009-B48 -- 2008 VF
`H55`	Astronomical Research Obs. (ARO) in Illinois, 13 in MPEC 2009-B48 -- 2009 BM2, 2009 BL2, 2009 BG, 2009 BF2, 2009 BF, 2009 BE2, 2009 BD, 2009 BB, 2009 AT, 2009 AM, 2009 AL15, 2009 AF16, 2008 SH82
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2009-B48 -- 142348, 4179
`127`	Bornheim Obs. in Germany, 6 in MPEC 2009-B48 -- 2008 SH82, 2008 EV5, 89355, 162900, 162361, 141765
`0953`	S. Nazarov via Crimean Astrophysical Obs. in the Ukraine, 1 in MPEC 2009-B48 -- 2009 BD
`J95`	Great Shefford Obs. in England, 1 in MPEC 2009-B48 -- 2009 BJ2
`B15`	Inastars Obs. in Germany, 1 in MPEC 2009-B48 -- 203015
`704`	LINEAR in New Mexico, 13 in MPEC 2009-B48 -- 2009 BM2, 2009 BF2, 2006 AS2, 2005 NJ1, 2001 BJ16, 85867, 22753, 200840, 11405, 7358, 4055, 3360, 2368
`A53`	Peschiera del Garda Obs. in Italy, 2 in MPEC 2009-B48 -- 2008 SH82, 2008 QT3
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPEC 2009-B48 -- 2009 BM2, 2009 BH2, 2009 BG, 2009 BE, 2009 AF16, 2009 AD16, 2008 XE2, 2008 UC95, 2008 MB5, 2008 EA32, 2006 AS2, 1999 CW8
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2009-B48 -- 111253
`510`	Siegen Obs. in Germany, 7 in MPEC 2009-B48 -- 2009 BM2, 2009 BE, 2009 AD16, 2008 QT3, 2008 EV5, 4179, 1864
`H53`	Thompsonville Obs. in Illinois, 3 in MPEC 2009-B48 -- 2008 QT3, 2006 AS2, 2002 VY94
`A92`	Urseanu Obs. in Romania, 1 in MPEC 2009-B48 -- 2009 AD16

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

Impact Risk Monitoring on 23 January '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 some objects with impact solutions beyond 100 years.
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 BE	JPL Sentry	1428	2061-2108	21	6.3e-04	-3.92	-4.18	0	JPL: "Analysis based on 81 observations spanning 6.0351 days (2009-Jan-16.36105 to 2009-Jan-22.39616)." Diameter approximately 0.020 km. from mean, weighted H=26.1.
2009 BE	NEODyS	1428	2037-2090	16	5.88e-04	-3.95	-4.19	0	NEODyS: "Based on 81 optical observations (of which 0 are rejected as outliers) from 2009/01/16.362 to 2009/01/22.397."

2009 BD	JPL Sentry	1428	2054-2108	34	4.9e-04	-5.23	-5.76	0	JPL: "Analysis based on 111 observations spanning 5.9357 days (2009-Jan-16.27641 to 2009-Jan-22.212081)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
2009 BD	NEODyS	1428	2053-2090	59	5.49e-04	-5.19	-5.76	0	NEODyS: "Based on 112 optical observations (of which 1 are rejected as outliers) from 2009/01/16.277 to 2009/01/22.213."

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 January '09

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

1428

Noted that JPL Sentry has updated its 2009 BD risk assessment - see above
Noted that NEODyS has updated its 2009 BD risk assessment - see above
Noted that JPL Sentry has updated its 2009 BE risk assessment - see above
Noted that NEODyS has updated its 2009 BE risk assessment - see above
Grabbed MPEC 2009-B48 - Daily Orbit Update - see above
Noted that the NEOCP has become empty

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