2009-01-16 Tracking News

Contents on 16 January '09

IAU Minor Planet Center
- NEOCP Activity -- 19 listings: 5 new, 14 updated
- New MPECs -- two MPECs
Observers -- sixteen observing facilities
Impact Risk Monitoring -- three 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 16 January '09

The MPC's NEO Confirmation Page has 19 listings: 5 new, 14 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and fourteen updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 20 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 16 January '09

Minor Planet Electronic Circulars

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

MPEC 2009-B01 time-stamped "07:05 UT" - Daily Orbit Update - see below
MPEC 2009-B02 time-stamped "17:10 UT" - 2007 RT9

MPEC 2009-B02 - "17:10 UT" - 2007 RT9

K07R09T 2007 RT9 (risk-listed, H=18.8 ~589m) from the Siding Spring Survey (SSS) (Jan. 14.52-56p6, 15.44p2, 16.43-44p2 & 16.56p2)

<< DOU on 16 Jan. '09 >> MPEC 2009-B01 - "07:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K09A00L 2009 AL (almost small, Q=4.092 AU, arc=15 days, H=21.8 ~148m) from the Spacewatch 1.8m telescope (Jan. 16.18-19p3)
K08Y32U 2008 YU32 (arc=16 days, H=19.9 ~355m) from Spacewatch 1.8m (Jan. 16.13-15p3)
Observations of recently (no longer) risk-listed objects
K09A15M 2009 AM15 (arc=8 days, H=18.6 ~645m) from SSS (Jan. 14.43p2)
K08Y30U 2008 YU30 (small asteroid, arc=15 days, H=23.2 ~78m) from Desert Moon Obs. (Jan. 15.44-49p3)
K08Y30T 2008 YT30 (arc=15 days, H=19.3 ~467m) from Spacewatch 1.8m (Jan. 15.26p3)
K08Y03J 2008 YJ3 (arc=24 days, H=20.2 ~309m) from Spacewatch 1.8m (Jan. 15.28-29p3)
Observations of small asteroids (H>22.0)
K08Y32W 2008 YW32 (arc=15 days, H=25.2 ~31m) from Spacewatch 1.8m (Jan. 15.43-44p3 at V=22.2)
K08Y29G 2008 YG29 (arc=16 days, H=24.1 ~51m) from Spacewatch 1.8m (Jan. 15.48-49p3)
K08Y29D 2008 YD29 (Q=4.534 AU, arc=16 days, H=22.1 ~129m) from Spacewatch 1.8m (Jan. 15.30-31p3)
K08Y27M 2008 YM27 (arc=17 days, H=23.4 ~71m) from Spacewatch 1.8m (Jan. 15.31-32p3)
K08Y02M 2008 YM2 (arc=25 days, H=24.0 ~54m) from Spacewatch 1.8m (Jan. 15.33p3)
K07U01Y 2007 UY1 (arc=2 opp, H=22.9 ~89m) from LINEAR (Jan. 15.21-26p5)
Observations of almost-small asteroids (21.7<H<=22.0)
K08Y03G 2008 YG3 (Q=4.063 AU, arc=24 days, H=22.0 ~135m) from LINEAR (Jan. 15.22-26p4)
Observations of other objects
K09A15L 2009 AL15 (arc=8 days, H=21.3 ~186m) from Spacewatch 1.8m (Jan. 15.40-41p3)
K09A15K 2009 AK15 (arc=9 days, H=19.4 ~446m) from SSS (Jan. 15.45p2)
K08Y32Z 2008 YZ32 (arc=15 days, H=20.2 ~309m) from Desert Moon Obs. (Jan. 15.38-40p3)
K08Y32X 2008 YX32 (arc=15 days, H=20.8 ~234m) from Desert Moon Obs. (Jan. 15.26-31p3)
K08Y27S 2008 YS27 (arc=17 days, H=21.2 ~195m) from Spacewatch 1.8m (Jan. 15.51-52p3)
K08Y27R 2008 YR27 (arc=39 days, H=18.1 ~812m) from Desert Moon Obs. (Jan. 15.34-36p3)
K08Y26G 2008 YG26 (arc=18 days, H=21.7 ~155m) from Madonna di Dossobuono Obs. (Jan. 15.93-94p3)
K08Y02K 2008 YK2 (arc=22 days, H=19.5 ~426m) from Cyclops Obs. (Jan. 2.86-90p2)
K08Y00F 2008 YF (arc=23 days, H=20.9 ~224m) from Cyclops Obs. (Jan. 2.88-91p2)
K08X02E 2008 XE2 (arc=42 days, H=19.3 ~467m) from Desert Moon Obs. (Jan. 15.52-53p3)
K08X00M 2008 XM (q=0.111 AU, arc=45 days, H=19.8 ~371m) from Spacewatch 1.8m (Jan. 16.16-17p2)
K08W60L 2008 WL60 (arc=53 days, H=18.2 ~776m) from Calar Alto Obs. (Jan. 15.90p3)
K08V00F 2008 VF (arc=75 days, H=19.5 ~426m) from SSS (Dec. 26.50p1 & Jan. 15.46p1)
K08S82H 2008 SH82 (arc=112 days, H=21.4 ~178m) from Madonna di Dossobuono Obs. (Jan. 15.88-89p3)
K08S11V 2008 SV11 (Q=4.503 AU, arc=112 days, H=18.2 ~776m) from Desert Moon Obs. (Jan. 15.07-11p3)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.5 ~676m) from Madonna di Dossobuono Obs. (Jan. 15.90p3)
K08S01O 2008 SO1 (Q=4.610 AU, arc=2 opp, H=19.8 ~371m) from SSS (Jan. 3.65p1)
K08Q03T 2008 QT3 (arc=144 days, H=18.8 ~589m) from Calar Alto Obs. (Jan. 15.91p3) and Thompsonville Obs. (Jan. 16.16-17p6)
K08O09B 2008 OB9 (Q=5.652 AU, arc=169 days, H=17.4 ~1.12 km) from SSS (Jan. 14.44p2)
K08E05V 2008 EV5 (arc=2 opp, H=20.0 ~339m) from Cyclops Obs. (Jan. 2.87-91p2) and Madonna di Dossobuono Obs. (Jan. 15.91p3)
K08A28V 2008 AV28 (arc=2 opp, H=19.5 ~426m) from Spacewatch 1.8m (Jan. 16.12-13p3)
K07M13K 2007 MK13 (arc=3 opp, H=19.9 ~355m) from LINEAR (Jan. 15.38-42p4)
K06T00N 2006 TN (arc=2 opp, H=19.6 ~407m) from Spacewatch 1.8m (Jan. 16.09-11p3)
K06SL7Z 2006 SZ217 (arc=3 opp, H=17.4 ~1.12 km) from Boambee Obs. (Jan. 14.45-49p2, 15.44p1 & 15.49p1)
K06S19O 2006 SO19 (arc=3 opp, H=19.4 ~446m) from Spacewatch 1.8m (Jan. 15.54-55p2)
K06BE7Q 2006 BQ147 (arc=4 opp, H=18.9 ~562m) from Boambee Obs. (Jan. 14.44-48p2 & 15.42-43p2)
K06A02S 2006 AS2 (arc=4 opp, H=20.3 ~295m) from the Spacewatch 0.9m telescope (Jan. 15.25-27p2) and Thompsonville Obs. (Jan. 16.19-21p6)
K03Y01O 2003 YO1 (arc=4 opp, H=19.4 ~446m) from LINEAR (Jan. 15.14-19p5)
K03X22B 2003 XB22 (arc=3 opp, H=19.2 ~490m) from Madonna di Dossobuono Obs. (Jan. 15.92p3)
K01X01F 2001 XF1 (arc=3 opp, H=19.2 ~490m) from Spacewatch 1.8m (Jan. 16.08-09p3)
K01O84E 2001 OE84 (arc=3 opp, H=17.9 ~891m) from LINEAR (Jan. 15.33-36p4)
K01F01A 2001 FA1 (arc=5 opp, H=17.6 ~1.02 km) from Spacewatch 1.8m (Jan. 15.53-54p3)
K00DB0V 2000 DV110 (arc=6 opp, H=19.7 ~389m) from Spacewatch 1.8m (Jan. 15.45-47p3)
K4131 204131 2003 YL from Spacewatch 0.9m (Jan. 15.25-29p3)
J8856 198856 2005 LR3 from LINEAR (Jan. 15.45-50p5)
J4386 194386 2001 VG5 from Thompsonville Obs. (Jan. 16.09-10p6)
H5114 175114 2004 QQ from Spacewatch 0.9m (Jan. 15.26-29p3)
G2900 162900 2001 HG31 from LINEAR (Jan. 15.14-19p5), Mirasteilas Obs. (Jan. 16.03-04p3), and Thompsonville Obs. (Jan. 16.10-11p6)
G2361 162361 2000 AF6 from Mirasteilas Obs. (Jan. 15.98-99p3)
F9923 159923 2004 YJ32 from Spacewatch 0.9m (Jan. 15.30-34p3)
F4715 154715 2004 LB6 from Purple Mtn. Obs. XuYi Station (XuYi Sta.) (Jan. 15.66-69p3)
E2348 142348 2002 RX211 from Mirasteilas Obs. (Jan. 15.97p3) and El Guijo Obs. (Jan. 16.01-02p3)
E1765 141765 2002 MP3 from LINEAR (Jan. 15.26-31p5)
E1052 141052 2001 XR1 from Thompsonville Obs. (Jan. 16.15-16p6)
D6849 136849 1998 CS1 from Urseanu Obs. (Jan. 12.93-94p2)
89355 89355 2001 VS78 from Vicksburg Obs. (Jan. 15.14-15p3) and Thompsonville Obs. (Jan. 16.14-15p6)
31221 31221 1998 BP26 from LINEAR (Jan. 15.09-12p3)
22753 22753 1998 WT from Spacewatch 0.9m (Jan. 15.47-50p3) and Mirasteilas Obs. (Jan. 16.08-09p2)
22099 22099 2000 EX106 from B. Conklin via RAS Obs. Mayhill (Jan. 16.05-07p2)
08035 8035 1992 TB from Boambee Obs. (Jan. 14.41-46p4)
08013 8013 Gordonmoore (1990 KA) from Spacewatch 0.9m (Jan. 15.20-24p3)
04257 4257 Ubasti (1987 QA) from Boambee Obs. (Jan. 14.44-47p2 & 15.42-45p2)
04179 4179 Toutatis (1989 AC) from Spacewatch 0.9m (Jan. 15.31-35p3) and Thompsonville Obs. (Jan. 16.21-22p6)
01980 1980 Tezcatlipoca (1950 LA) from Thompsonville Obs. (Jan. 16.04-05p6)
01916 1916 Boreas (1953 RA) from LINEAR (Jan. 15.14-19p5)
01863 1863 Antinous (1948 EA) from LINEAR (Jan. 15.33-38p5)
01627 1627 Ivar (1929 SH) from Thompsonville Obs. (Jan. 16.07-08p6)

Observers on 16 January '09

Sixteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`432`	Boambee Obs. in New South Wales, 4 in MPEC 2009-B01 -- 2006 SZ217, 2006 BQ147, 8035, 4257
`493`	Calar Alto Obs. in Spain, 2 in MPEC 2009-B01 -- 2008 WL60, 2008 QT3
`B84`	Cyclops Obs. in The Netherlands, 3 in MPEC 2009-B01 -- 2008 YK2, 2008 YF, 2008 EV5
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2009-B01 -- 2008 YZ32, 2008 YX32, 2008 YU30, 2008 YR27, 2008 XE2, 2008 SV11
`J27`	El Guijo Obs. in Spain, 1 in MPEC 2009-B01 -- 142348
`704`	LINEAR in New Mexico, 11 in MPEC 2009-B01 -- 2008 YG3, 2007 UY1, 2007 MK13, 2003 YO1, 2001 OE84, 31221, 198856, 162900, 141765, 1916, 1863
`560`	Madonna di Dossobuono Obs. in Italy, 5 in MPEC 2009-B01 -- 2008 YG26, 2008 SQ1, 2008 SH82, 2008 EV5, 2003 XB22
`B67`	Mirasteilas Obs. in Switzerland, 4 in MPEC 2009-B01 -- 22753, 162900, 162361, 142348
`D29`	Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-B01 -- 154715
`H06\`	B. Conklin via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-B01 -- 22099
`E12`	Siding Spring Survey (SSS) in New South Wales, 6 in MPECs 2009-B01 & 2009-B02 -- 2009 AM15, 2009 AK15, 2008 VF, 2008 SO1, 2008 OB9, 2007 RT9
`691`	Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2009-B01 -- 2006 AS2, 22753, 204131, 175114, 159923, 8013, 4179
`291`	Spacewatch 1.8m telescope in Arizona, 18 in MPEC 2009-B01 -- 2009 AL15, 2009 AL, 2008 YW32, 2008 YU32, 2008 YT30, 2008 YS27, 2008 YM27, 2008 YM2, 2008 YJ3, 2008 YG29, 2008 YD29, 2008 XM, 2008 AV28, 2006 TN, 2006 SO19, 2001 XF1, 2001 FA1, 2000 DV110
`H53`	Thompsonville Obs. in Illinois, 9 in MPEC 2009-B01 -- 2008 QT3, 2006 AS2, 89355, 194386, 162900, 141052, 4179, 1980, 1627
`A92`	Urseanu Obs. in Romania, 1 in MPEC 2009-B01 -- 136849
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2009-B01 -- 89355

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

Impact Risk Monitoring on 16 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.
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

2009 AL	JPL Sentry	1428	2057-2106	3	3.1e-07	-5.16	-5.36	0	JPL: "Analysis based on 38 observations spanning 14.886 days (2009-Jan-01.29931 to 2009-Jan-16.18568)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
2009 AL	NEODyS	1428	2057-2090	2	8.73e-08	-5.45	-5.58	0	NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2009/01/01.300 to 2009/01/16.186."

2008 YU32	JPL Sentry	1428	R E M O V E D						JPL: Risk listing removed at 0954 UTC.
2008 YU32	NEODyS	1428	R E M O V E D						-

2007 RT9	JPL Sentry	1858	R E M O V E D						JPL: Risk listing removed at 1853 UTC.

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 16 January '09

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

1858	Noted that JPL Sentry has removed 2007 RT9 as an impact risk - see above
1810	Grabbed MPEC 2009-B02 - 2007 RT9 - see above
1428	Noted that JPL Sentry has removed 2008 YU32 as an impact risk - see above Noted that NEODyS has removed 2008 YU32 as an impact risk - see above Noted that JPL Sentry has updated its 2009 AL risk assessment - see above Noted that NEODyS has updated its 2009 AL risk assessment - see above Grabbed MPEC 2009-B01 - Daily Orbit Update - see above

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