2009-01-28 Tracking News

Contents on 28 January '09

IAU Minor Planet Center
- NEOCP Activity -- ten listings: 1 new, 9 updated
- New MPECs -- three MPECs
Observers -- thirteen 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 28 January '09

The MPC's NEO Confirmation Page has 10 listings: 1 new, 9 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and nine updated listings. Of these, six were "one nighters."

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 January '09

Minor Planet Electronic Circulars

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

MPEC 2009-B65 time-stamped "07:05 UT" - Daily Orbit Update - see below
MPEC 2009-B66 time-stamped "21:17 UT" - Comets C/2008 U2, 2008 U3, 2008 U4, 2008 U5 (SOHO) - see below
MPEC 2009-B67 time-stamped "21:22 UT" - Comets C/2008 U6, 2008 U7, 2008 U8, 2008 U9 (SOHO)

MPEC 2009-B67 - "21:22 UT" - Comets C/2008 U6, 2008 U7, 2008 U8, 2008 U9 (SOHO)

CK08U090 C/2008 U9 from the LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. (SOHO) (2008 Oct. 21.62-69p12)
CK08U080 C/2008 U8 from SOHO C2 (2008 Oct. 20.75-79p8 & 2008 Oct. 20.83-84p4)
CK08U070 C/2008 U7 from the LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. (SOHO) (2008 Oct. 20.57-85p26) and SOHO C2 (2008 Oct. 20.87-02p16)
CK08U060 C/2008 U6 from SOHO C2 (2008 Oct. 18.44-52p14)

MPEC 2009-B66 - "21:17 UT" - Comets C/2008 U2, 2008 U3, 2008 U4, 2008 U5 (SOHO)

CK08U050 C/2008 U5 from SOHO C2 (2008 Oct. 18.19-29p12)
CK08U040 C/2008 U4 from SOHO C3 (2008 Oct. 16.86-93p8, 2008 Oct. 16.97-03p8 & 2008 Oct. 17.07-51p42) and SOHO C2 (2008 Oct. 17.50-62p12)
CK08U030 C/2008 U3 from SOHO C2 (2008 Oct. 16.79-85p10)
CK08U020 C/2008 U2 from SOHO C2 (2008 Oct. 16.52-62p12)

<< DOU on 28 Jan. '09 >> MPEC 2009-B65 - "07:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K09B05R 2009 BR5 (almost small, arc=7 days, H=22.0 ~135m) from LINEAR (Jan. 27.36-41p5)
K09A00L 2009 AL (almost small, Q=4.135 AU, arc=27 days, H=21.8 ~148m) from the Spacewatch 1.8m telescope (Jan. 27.21-22p3 & 28.13-14p2)
Observations of recently (no longer) risk-listed objects
K09A00V 2009 AV (i=45.9°, arc=25 days, H=18.0 ~851m) from Tenagra II Obs. (Jan. 27.55p3)
Observations of small asteroids (H>22.0)
K09B11H 2009 BH11 (arc=1 day, H=26.3 ~19m) from Mt. John Obs. (Jan. 27.55-56p4)
K09B11G 2009 BG11 (arc=2 days, H=22.5 ~107m) from Mt. John Obs. (Jan. 27.48p4), the Siding Spring Survey (SSS) (Jan. 27.51-52p3), and Schiaparelli Obs. (Jan. 27.79p3)
K09B11C 2009 BC11 (arc=2 days, H=22.1 ~129m) from Tenagra II Obs. (Jan. 27.54p3) and Mt. John Obs. (Jan. 27.63-64p4)
K09B00C 2009 BC (arc=12 days, H=22.8 ~93m) from the Spacewatch 0.9m telescope (Jan. 25.14-16p2) and Spacewatch 1.8m (Jan. 28.16-17p3)
Observations of other objects
K09B02M 2009 BM2 (Q=4.265 AU, arc=10 days, H=19.9 ~355m) from Capannoli Obs. (Jan. 27.98-99p2)
K09A16D 2009 AD16 (Q=4.186 AU, arc=13 days, H=20.6 ~257m) from Hamamatsu-Yuto Obs. (Jan. 27.53-59p5) and Capannoli Obs. (Jan. 27.93-94p3)
K09A15L 2009 AL15 (arc=20 days, H=21.4 ~178m) from Spacewatch 1.8m (Jan. 27.22-23p3)
K09A15K 2009 AK15 (arc=21 days, H=19.4 ~446m) from Mt. John Obs. (Jan. 27.47p4)
K08Y27R 2008 YR27 (arc=52 days, H=18.1 ~812m) from B. Conklin via RAS Obs. Mayhill (Jan. 28.07-08p2)
K08Y00A 2008 YA (Q=4.834 AU, arc=43 days, H=18.0 ~851m) from SSS (Jan. 27.46p1) and Spacewatch 1.8m (Jan. 28.14-15p3)
K08X00N 2008 XN (arc=57 days, H=21.4 ~178m) from Spacewatch 1.8m (Jan. 28.11-12p3)
K08Q03T 2008 QT3 (arc=156 days, H=18.9 ~562m) from Hamamatsu-Yuto Obs. (Jan. 27.45-47p9)
K08M05B 2008 MB5 (arc=209 days, H=19.2 ~490m) from Schiaparelli Obs. (Jan. 25.12p3)
K08E05V 2008 EV5 (arc=2 opp, H=20.0 ~339m) from Hamamatsu-Yuto Obs. (Jan. 27.48-51p8)
K06W02Z 2006 WZ2 (arc=3 opp, H=16.9 ~1.41 km) from Hamamatsu-Yuto Obs. (Jan. 25.79-83p6 & 27.74-78p9)
K06A02S 2006 AS2 (arc=4 opp, H=20.4 ~282m) from Schiaparelli Obs. (Jan. 25.10-11p5) and Hamamatsu-Yuto Obs. (Jan. 27.60-64p8)
K04X60Y 2004 XY60 (q=0.130 AU, arc=4 opp, H=18.9 ~562m) from SSS (Jan. 27.44p1)
K04N08L 2004 NL8 (Q=4.417 AU, arc=4 opp, H=17.1 ~1.29 km) from LINEAR (Jan. 27.48-53p5)
K03R00B 2003 RB (arc=4 opp, H=18.7 ~616m) from Spacewatch 0.9m (Jan. 26.20-22p2)
K3217 203217 2001 FX9 from LINEAR (Jan. 27.31-35p5)
G3014 163014 2001 UA5 from Purple Mtn. Obs. XuYi Station (XuYi Sta.) (Jan. 26.46-49p4)
B1253 111253 2001 XU10 from Naef Obs. (Jan. 27.99-01p2)
08013 8013 Gordonmoore (1990 KA) from Spacewatch 0.9m (Jan. 25.14-17p2)
07358 7358 Oze (1995 YA3) from Spacewatch 0.9m (Jan. 25.14p1)
04183 4183 Cuno (1959 LM) from XuYi Sta. (Jan. 26.46-49p4)
04179 4179 Toutatis (1989 AC) from Hamamatsu-Yuto Obs. (Jan. 25.72-73p4)
03122 3122 Florence (1981 ET3) from LINEAR (Jan. 27.37-42p5)
02061 2061 Anza (1960 UA) from LINEAR (Jan. 27.30-35p5)

Observers on 28 January '09

Thirteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`B09`	Capannoli Obs. in Italy, 2 in MPEC 2009-B65 -- 2009 BM2, 2009 AD16
`379`	Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2009-B65 -- 2009 AD16, 2008 QT3, 2008 EV5, 2006 WZ2, 2006 AS2, 4179
`704`	LINEAR in New Mexico, 5 in MPEC 2009-B65 -- 2009 BR5, 2004 NL8, 203217, 3122, 2061
`474`	Mt. John Obs. in New Zealand, 4 in MPEC 2009-B65 -- 2009 BH11, 2009 BG11, 2009 BC11, 2009 AK15
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2009-B65 -- 111253
`D29`	Purple Mtn. Obs. XuYi Station (XuYi Sta.) in China, 2 in MPEC 2009-B65 -- 163014, 4183
`H06\`	B. Conklin via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-B65 -- 2008 YR27
`204`	Schiaparelli Obs. in Italy, 3 in MPEC 2009-B65 -- 2009 BG11, 2008 MB5, 2006 AS2
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2009-B65 -- 2009 BG11, 2008 YA, 2004 XY60
`2492`	LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2009-B66 & 2009-B67 -- C/2008 U9, C/2008 U8, C/2008 U7, C/2008 U6, C/2008 U5, C/2008 U4, C/2008 U3, C/2008 U2
`2493`	LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPECs 2009-B66 & 2009-B67 -- C/2008 U7, C/2008 U4
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2009-B65 -- 2009 BC, 2003 RB, 8013, 7358
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2009-B65 -- 2009 BC, 2009 AL15, 2009 AL, 2008 YA, 2008 XN
`926`	Tenagra II Obs. in Arizona, 2 in MPEC 2009-B65 -- 2009 BC11, 2009 AV

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

Impact Risk Monitoring on 28 January '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2358 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.
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 BR5	JPL Sentry	1417	2059-2108	7	7.2e-07	-4.55	-4.65	0	JPL: "Analysis based on 26 observations spanning 6.9589 days (2009-Jan-20.45513 to 2009-Jan-27.414)." Diameter approximately 0.130 km. from mean, weighted H=22.0.
2009 BR5	NEODyS	1417	2025-2078	7	8.26e-07	-4.49	-4.59	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2009/01/20.456 to 2009/01/27.415."

2009 AL	JPL Sentry	1417	2090	1	9.4e-10	-7.69	-7.69	0	JPL: "Analysis based on 55 observations spanning 26.838 days (2009-Jan-01.29931 to 2009-Jan-28.13701)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
2009 AL	NEODyS	1417	R E M O V E D						-

2004 XY130	JPL Sentry	2359	R E M O V E D						JPL: Risk listing removed at 1200 UTC 29 Oct..

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 January '09

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

2359	Noted that JPL Sentry has removed 2004 XY130 as an impact risk - see above
2159	Grabbed MPEC 2009-B66 - Comets C/2008 U2, 2008 U3, 2008 U4, 2008 U5 (SOHO) - see above Grabbed MPEC 2009-B67 - Comets C/2008 U6, 2008 U7, 2008 U8, 2008 U9 (SOHO) - see above
1417	Noted that JPL Sentry has updated its 2009 AL risk assessment - see above Noted that NEODyS has removed 2009 AL as an impact risk - see above Noted that JPL Sentry has updated its 2009 BR5 risk assessment - see above Noted that NEODyS has updated its 2009 BR5 risk assessment - see above Grabbed MPEC 2009-B65 - Daily Orbit Update - see above

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