Contents  on 20 January '10

Resources:

The latest A/CC news is available via framed access, RSS news feed 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 20 January '10

The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and one updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of six listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 20 January '10

Minor Planet Electronic Circulars

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


MPEC 2010-B25 - "19:23 UT" - Observations of Comets


MPEC 2010-B24 - "18:56 UT" - Comet P/2010 A5 (LINEAR)


MPEC 2010-B23 - "18:48 UT" - Comet C/2010 A4 (Siding Spring)


MPEC 2010-B22 - "18:35 UT" - Comet P/2010 A3 (Hill)


MPEC 2010-B21 - "18:25 UT" - Comet P/2010 A2 (LINEAR)


MPEC 2010-B20 - "18:21 UT" - Comet P/2010 A1 (Hill)


MPEC 2010-B19 - "18:15 UT" - Comet P/2009 Y2 (Kowalski)


MPEC 2010-B18 - "18:10 UT" - Comet C/2009 Y1 (Catalina)


MPEC 2010-B17 - "15:34 UT" - 2010 BL2


MPEC 2010-B16 - "15:31 UT" - 2010 BK2


MPEC 2010-B15 - "15:14 UT" - 2005 UO


<< DOU on 20 Jan. '10 >>  MPEC 2010-B14 - "07:11 UT" - Daily Orbit Update


MPEC 2010-B13 - "00:36 UT" - 1998 OK1

Observers  on 20 January '10

A total of 61 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 16 in MPECs 2010-B18, 2010-B19, 2010-B21, 2010-B22, 2010-B24 & 2010-B25 -- P/2010 A5, P/2010 A3, P/2010 A2, P/2009 Y2, C/2009 Y1, C/2009 U5, C/2009 U3, C/2008 S3, C/2008 N1, C/2008 FK75, 232P, 217P, 157P, 145P, 64P, 22P
B54Ager Obs. in Spain, 1 in MPEC 2010-B25 -- 30P
J10Alicante Obs. in Spain, 1 in MPEC 2010-B25 -- 118P
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2010-B14 -- 2010 BC
C12Berta Obs., 3 in MPECs 2010-B22 & 2010-B25 -- P/2010 A3, 94P, 29P
215Buchloe Obs. in Germany, 6 in MPECs 2010-B18, 2010-B20, 2010-B21 & 2010-B25 -- P/2010 A2, P/2010 A1, C/2009 Y1, P/2009 Q4, 230P, 29P
235CAST Obs. in Italy, 17 in MPECs 2010-B21 & 2010-B25 -- P/2010 A2, C/2009 U3, P/2009 T2, P/2009 Q4, C/2008 Q3, C/2008 P1, C/2007 Q3, C/2006 OF2, 217P, 157P, 137P, 118P, 94P, 81P, 30P, 29P, 22P
B81Caimari Obs. on Mallorca, 1 in MPEC 2010-B25 -- 217P
160Castelmartini Obs. in Italy, 19 in MPECs 2010-B14, 2010-B19, 2010-B21, 2010-B22 & 2010-B25 -- 2010 BC, 2010 AF40, P/2010 A3, P/2010 A2, P/2009 Y2, C/2009 U3, C/2008 S3, 2007 UR3, C/2007 N3, 2002 NW16, 138937, 137925, 4015, 217P, 157P, 137P, 118P, 31P, 30P
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2010-B25 -- P/2009 Q4, C/2007 N3, 9P
A77Chante-Perdrix Obs. in France, 6 in MPECs 2010-B19, 2010-B20, 2010-B21, 2010-B22 & 2010-B25 -- P/2010 A3, P/2010 A2, P/2010 A1, P/2009 Y2, C/2008 A1, 29P
480Cockfield Obs. in England, 1 in MPEC 2010-B25 -- C/2009 U3
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2010-B14 -- 2010 BH2, 2006 CX10
157Frasso Sabino Obs. in Italy, 2 in MPECs 2010-B18 & 2010-B20 -- P/2010 A1, C/2009 Y1
372Geisei Obs. in Japan, 6 in MPECs 2010-B20, 2010-B22, 2010-B23, 2010-B24 & 2010-B25 -- P/2010 A5, C/2010 A4, P/2010 A3, P/2010 A1, C/2006 OF2, 230P
B83Gieres Obs. in France, 3 in MPEC 2010-B25 -- 217P, 118P, 30P
143Gnosca Obs. in Switzerland, 1 in MPEC 2010-B25 -- C/2007 Q3
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2010-B25 -- P/2009 Q4
J95Great Shefford Obs. in England, 1 in MPEC 2010-B14 -- 2010 AF40
E16Grove Creek Obs. in New South Wales, 2 in MPECs 2010-B17 & 2010-B25 -- 2010 BL2, 118P
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-B25 -- 217P, 118P, 30P
240Herrenberg Obs. in Germany, 2 in MPEC 2010-B14 -- 153243, 153201
G92Jarnac Obs. in Arizona, 1 in MPEC 2010-B25 -- 137P
415Kambah Obs. in the Australian Capital Territory, 3 in MPECs 2010-B23 & 2010-B25 -- C/2010 A4, 195P, 169P
D95Kurihara Obs. in Japan, 4 in MPECs 2010-B20 & 2010-B25 -- P/2010 A1, 217P, 118P, 30P
704LINEAR in New Mexico, 14 in MPECs 2010-B13, 2010-B22, 2010-B24 & 2010-B25 -- P/2010 A5, P/2010 A3, C/2009 U3, P/2009 Q4, C/2008 Q1, C/2007 N3, 1998 OK1, 137P, 81P, 64P, 44P, 31P, 30P, 29P
J38La Vara Obs. in Spain, 4 in MPEC 2010-B25 -- C/2007 Q3, 217P, 157P, 29P
B33Libbiano Obs. in Italy, 1 in MPEC 2010-B25 -- P/2009 Q4
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2010-B21 -- P/2010 A2
J40Malaga Obs. in Spain, 3 in MPECs 2010-B20 & 2010-B25 -- P/2010 A1, 137P, 81P
232Masquefa Obs. in Spain, 3 in MPEC 2010-B25 -- 217P, 118P, 30P
A06Mataro Obs. in Spain, 2 in MPEC 2010-B25 -- 217P, 118P
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPECs 2010-B13, 2010-B14 & 2010-B15 -- 2009 WO106, 2005 UO, 1998 OK1
J45Montana Cabreja Obs. in the Canary Islands, 2 in MPEC 2010-B25 -- C/2007 Q3, 81P
213Montcabre Obs. in Spain, 4 in MPECs 2010-B20, 2010-B21, 2010-B22 & 2010-B25 -- P/2010 A3, P/2010 A2, P/2010 A1, 29P
900Moriyama Obs. in Japan, 22 in MPECs 2010-B20, 2010-B21, 2010-B22, 2010-B24 & 2010-B25 -- P/2010 A5, P/2010 A3, P/2010 A2, P/2010 A1, C/2009 U5, C/2009 U3, P/2009 T2, P/2009 Q4, C/2008 P1, C/2007 Q3, C/2007 N3, C/2006 OF2, C/2005 L3, 232P, 230P, 217P, 157P, 118P, 94P, 81P, 30P, 29P
474Mt. John Obs. in New Zealand, 1 in MPEC 2010-B14 -- 2009 WN
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-B22 & 2010-B25 -- P/2010 A3, C/2007 N3, 44P
J47Nazaret Obs. in Spain, 5 in MPECs 2010-B22 & 2010-B25 -- P/2010 A3, C/2007 Q3, 217P, 81P, 30P
423North Ryde Obs. in New South Wales, 2 in MPEC 2010-B25 -- 195P, 169P
D92Osaki Obs. in Japan, 4 in MPECs 2010-B21 & 2010-B25 -- P/2010 A2, 217P, 118P, 29P
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-B25 -- C/2008 FK75
D90RAS Obs. Moorook in South Australia, 2 in MPECs 2010-B23 & 2010-B25 -- C/2010 A4, C/2008 E3
428Reedy Creek Obs. in Queensland, 1 in MPEC 2010-B14 -- 2010 AL30
473Remanzacco Obs. in Italy, 3 in MPECs 2010-B18, 2010-B19 & 2010-B25 -- P/2009 Y2, C/2009 Y1, 217P
C09Rouet Obs. in France, 6 in MPEC 2010-B25 -- C/2007 Q3, 217P, 118P, 81P, 30P, 29P
J07SPAG Monfrague Obs. in Spain, 1 in MPEC 2010-B25 -- P/2009 T2
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2010-B22 -- P/2010 A3
204Schiaparelli Obs. in Italy, 5 in MPECs 2010-B21 & 2010-B25 -- P/2010 A2, C/2008 A1, 203P, 145P, 30P
D93Sendai Obs. in Japan, 1 in MPEC 2010-B25 -- C/2005 L3
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPECs 2010-B13, 2010-B14, 2010-B16 & 2010-B17 -- 2010 BL2, 2010 BK2, 2003 CH11, 2001 BE10, 1998 OK1, 159686
071Smolyan Obs. in Bulgaria, 1 in MPEC 2010-B25 -- 118P
587Sormano Obs. in Italy, 6 in MPECs 2010-B13 & 2010-B14 -- 2010 BC, 2010 AO60, 2010 AJ30, 2010 AG40, 2010 AF40, 1998 OK1
691Spacewatch 0.9m telescope in Arizona, 13 in MPECs 2010-B14 & 2010-B25 -- C/2009 U5, 2009 FF19, C/2008 Q1, 2005 JF21, 2003 QH5, 2003 BA21, 222008, 164216, 163692, 162038, 105141, 74P, 64P
A71Stixendorf Obs. in Austria, 6 in MPECs 2010-B19, 2010-B22 & 2010-B25 -- P/2010 A3, P/2009 Y2, C/2009 U3, 203P, 157P, 30P
I19Tanti Obs. in Argentina, 3 in MPECs 2010-B16, 2010-B17 & 2010-B25 -- 2010 BL2, 2010 BK2, 169P
926Tenagra II Obs. in Arizona, 1 in MPEC 2010-B25 -- C/2008 S3
H10Tzec Maun Obs. Mayhill in New Mexico, 16 in MPECs 2010-B21, 2010-B24 & 2010-B25 -- P/2010 A5, P/2010 A2, C/2009 U3, P/2009 Q4, C/2008 S3, C/2008 P1, C/2008 N1, C/2007 Q3, C/2005 L3, 230P, 217P, 203P, 81P, 74P, 31P, 29P
H47Vicksburg Obs. in Mississippi, 9 in MPEC 2010-B25 -- P/2009 T2, P/2009 Q4, C/2008 Q3, C/2007 Q3, C/2006 OF2, C/2005 L3, 81P, 30P, 29P
B42Vitebsk Obs. in Belarus, 3 in MPEC 2010-B25 -- 137P, 29P, 9P
J08Zonalunar Obs. in Spain, 2 in MPEC 2010-B25 -- C/2009 U3, P/2009 Q4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 January '10

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 impact solutions beyond 100 years for a few objects.
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
2010 BL2JPL Sentry19002024-204826.3e-10-4.48-4.560JPL: "Analysis based on 17 observations spanning 1.0824 days (2010-Jan-19.47761 to 2010-Jan-20.56005)." Diameter approximately 1.300 km. from mean, weighted H=17.1.
2005 UOJPL Sentry1800R E M O V E DJPL: Risk listing removed at 1703 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 20 January '10

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

1936Grabbed MPEC 2010-B25 - Observations of Comets - see above
1901Grabbed MPEC 2010-B18 - Comet C/2009 Y1 (Catalina) - see above
Grabbed MPEC 2010-B19 - Comet P/2009 Y2 (Kowalski) - see above
Grabbed MPEC 2010-B20 - Comet P/2010 A1 (Hill) - see above
Grabbed MPEC 2010-B21 - Comet P/2010 A2 (LINEAR) - see above
Grabbed MPEC 2010-B22 - Comet P/2010 A3 (Hill) - see above
Grabbed MPEC 2010-B23 - Comet C/2010 A4 (Siding Spring) - see above
Grabbed MPEC 2010-B24 - Comet P/2010 A5 (LINEAR) - see above
1900Noted that JPL Sentry has posted 2010 BL2 as an impact risk - see above
1800Noted that JPL Sentry has removed 2005 UO as an impact risk - see above
1700Grabbed MPEC 2010-B15 - 2005 UO - see above
Grabbed MPEC 2010-B16 - 2010 BK2 - see above
Grabbed MPEC 2010-B17 - 2010 BL2 - see above
1500Grabbed MPEC 2010-B14 - Daily Orbit Update - see above
0155Grabbed MPEC 2010-B13 - 1998 OK1 - see above