Contents  on 21 January '08

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 21 January '08

The MPC's NEO Confirmation Page has 8 listings: 8 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had eight updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of twelve 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 21 January '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been six MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 21 Jan. '08 >>  MPEC 2008-B27 - "07:10 UT" - Daily Orbit Update


MPEC 2008-B26 - "00:34 UT" - Observations of Comets


MPEC 2008-B25 - "00:15 UT" - Comet C/2008 A1 (McNaught)


MPEC 2008-B24 - "00:12 UT" - Comet C/2007 Y1 (LINEAR)


MPEC 2008-B23 - "00:08 UT" - Comet C/2007 W3 (LINEAR)


MPEC 2008-B22 - "00:01 UT" - Comet C/2007 W1 (Boattini)

Observers  on 21 January '08

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

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 2 in MPECs 2008-B25 & 2008-B26 -- C/2008 A1, C/2006 Q1
349Ageo Obs. in Japan, 9 in MPECs 2008-B22 & 2008-B26 -- C/2007 W1, C/2007 U1, P/2007 T2, P/2007 H1, C/2006 M1, 194P, 124P, 65P, 8P
J51Atlante Obs. in the Canary Islands, 5 in MPECs 2008-B22 & 2008-B26 -- C/2007 W1, C/2007 S2, C/2006 S5, 65P, 29P
A81Balzaretto Obs. in Italy, 3 in MPECs 2008-B26 & 2008-B27 -- 2000 CH59, 110P, 29P
215Buchloe Obs. in Germany, 3 in MPEC 2008-B26 -- P/2007 T2, 156P, 7P
B20Carmelita Obs. in Spain, 3 in MPEC 2008-B26 -- C/2006 W3, 93P, 29P
E00Castlemaine Obs. in Victoria, 2 in MPECs 2008-B25 & 2008-B26 -- C/2008 A1, C/2007 T1
703Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2008-B24 & 2008-B26 -- C/2007 Y1, 195P, 180P, 70P
A77Chante-Perdrix Obs. in France, 6 in MPEC 2008-B26 -- C/2006 OF2, 148P, 117P, 29P, 17P, 8P
448Desert Moon Obs. in New Mexico, 5 in MPEC 2008-B27 -- 2007 YX1, 2007 YK, 2007 YB2, 2004 XP164, 171839
372Geisei Obs. in Japan, 2 in MPECs 2008-B25 & 2008-B26 -- C/2008 A1, 29P
H51Greiner Research Obs. in Wisconsin, 4 in MPECs 2008-B26 & 2008-B27 -- 2008 AF4, 2005 TU45, 93P, 50P
458Guadarrama Obs. in Spain, 3 in MPEC 2008-B26 -- 93P, 29P, 17P
355Hadano Obs. in Japan, 17 in MPECs 2008-B22, 2008-B23, 2008-B24 & 2008-B26 -- C/2007 Y1, C/2007 W3, C/2007 W1, C/2007 U1, P/2007 T6, C/2007 T5, P/2007 C2, C/2006 S5, 180P, 124P, 110P, 93P, 74P, 65P, 50P, 17P, 8P
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2008-B26 -- 29P, 17P
B19Iluro Obs. in Spain, 2 in MPEC 2008-B26 -- C/2006 S5, 29P
701Junk Bond Obs. in Arizona, 1 in MPEC 2008-B26 -- 74P
415Kambah Obs. in the Australian Capital Territory, 2 in MPECs 2008-B25 & 2008-B26 -- C/2008 A1, C/2006 Q1
585Kiev Comet Station in the Ukraine, 7 in MPECs 2008-B23 & 2008-B26 -- C/2007 W3, C/2006 S5, 194P, 93P, 46P, 17P, 8P
400Kitami Obs. in Japan, 5 in MPEC 2008-B26 -- C/2007 U1, P/2007 T6, C/2007 S2, P/2007 C2, C/2007 B2
704LINEAR in New Mexico, 12 in MPECs 2008-B24, 2008-B26 & 2008-B27 -- C/2007 Y1, P/2007 H1, P/2007 C2, C/2006 S5, 2005 EK70, 2003 BT35, 89830, 35107, 4954, 1685, 124P, 70P
699LONEOS in Arizona, 4 in MPEC 2008-B26 -- C/2007 S2, C/2006 S5, 195P, 116P
J76La Murta Obs. in Spain, 6 in MPEC 2008-B26 -- C/2006 S5, C/2006 OF2, 46P, 29P, 17P, 8P
J67La Puebla de Vallbona Obs. (Vallbona Obs.) in Spain, 7 in MPEC 2008-B26 -- P/2007 H1, C/2006 M1, 117P, 93P, 50P, 46P, 8P
J38La Vara Obs. in Spain, 11 in MPEC 2008-B26 -- P/2007 H1, C/2006 W3, C/2006 S5, C/2006 OF2, 191P, 93P, 50P, 46P, 29P, 17P, 8P
J59Linceo Obs. in Spain, 2 in MPEC 2008-B26 -- C/2006 S5, 8P
130Lumezzane Obs. in Italy, 1 in MPEC 2008-B26 -- 148P
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-B27 -- 2008 AK33
J40Malaga Obs. in Spain, 2 in MPECs 2008-B24 & 2008-B27 -- C/2007 Y1, 1036
232Masquefa Obs. in Spain, 3 in MPECs 2008-B22 & 2008-B26 -- C/2007 W1, C/2007 B2, 65P
A06Mataro Obs. in Spain, 1 in MPEC 2008-B26 -- 29P
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-B26 -- 29P
213Montcabre Obs. in Spain, 11 in MPECs 2008-B24 & 2008-B26 -- C/2007 Y1, P/2007 T6, C/2007 T5, P/2007 T2, C/2006 W3, C/2006 S5, 110P, 65P, 29P, 17P, 7P
945Monte Deva Obs. in Spain, 11 in MPEC 2008-B26 -- C/2007 B2, C/2006 W3, C/2006 S5, 124P, 110P, 93P, 65P, 46P, 29P, 17P, 8P
B06Montseny Obs., 2 in MPEC 2008-B26 -- 110P, 93P
900Moriyama Obs. in Japan, 3 in MPEC 2008-B26 -- 46P, 17P, 8P
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2008-B26 & 2008-B27 -- 2008 BE, 2008 BC, P/2007 T6, C/2007 T5, P/2007 T2, C/2007 M2, 2003 AK18, 170502, 163902, 4503, 65P, 10P
J78Murcia Obs. in Spain, 5 in MPEC 2008-B26 -- 110P, 93P, 50P, 29P, 17P
D81Nagano Obs., 2 in MPEC 2008-B26 -- C/2006 OF2, 29P
J47Nazaret Obs. in Spain, 4 in MPEC 2008-B26 -- P/2007 T6, C/2007 T5, 65P, 17P
423North Ryde Obs. in New South Wales, 4 in MPECs 2008-B22, 2008-B24, 2008-B25 & 2008-B26 -- C/2008 A1, C/2007 Y1, C/2007 W1, C/2007 T1
224Ottmarsheim Obs. in France, 3 in MPEC 2008-B26 -- 191P, 110P, 50P
B49Paus Obs. in Spain, 5 in MPECs 2008-B24 & 2008-B26 -- C/2007 Y1, C/2007 S2, 156P, 65P, 29P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2008-B26 -- C/2007 U1, P/2007 C2, C/2006 W3, C/2006 S5, 110P, 50P, 29P, 17P
D90RAS Obs. Moorook, 1 in MPEC 2008-B25 -- C/2008 A1
473Remanzacco Obs. in Italy, 1 in MPEC 2008-B26 -- 29P
939Rodeno Obs. in Spain, 6 in MPEC 2008-B26 -- C/2007 B2, C/2006 W3, C/2006 S5, 93P, 46P, 17P
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2008-B27 -- 2008 AF4
233San Vito Obs. in Italy, 2 in MPEC 2008-B26 -- 93P, 17P
B56Sant Pere Obs., 1 in MPEC 2008-B26 -- 29P
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-B26 -- C/2006 M1, 194P
B40Skylive Obs. in Italy, 1 in MPEC 2008-B26 -- C/2007 M2
691Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2008-B26 & 2008-B27 -- C/2007 S2, 2005 EC224, 34613, 187P, 173P, 10P
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2008-B27 -- 2008 AT28, 2008 AN33, 2008 AH33, 2008 AG33, 2007 YQ56, 2007 UR3, 1998 BB10
B30Szamotuly-Galowo Obs. in Poland, 7 in MPEC 2008-B26 -- C/2007 U1, C/2006 W3, 50P, 46P, 29P, 17P, 8P
673Table Mtn. Obs. in southern California, 9 in MPECs 2008-B23, 2008-B25 & 2008-B26 -- C/2008 A1, C/2007 W3, C/2006 S5, 191P, 93P, 74P, 50P, 29P, 17P
J35Tucci Obs. in Spain, 2 in MPEC 2008-B26 -- C/2007 U1, C/2006 S5
G72University Hills Obs. in southern California, 1 in MPEC 2008-B27 -- 2008 AF4
J70Vega del Thader Obs. in Spain, 5 in MPEC 2008-B26 -- 110P, 46P, 29P, 17P, 8P
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2008-B26 -- C/2006 S5, 179P
B42Vitebsk Obs. in Belarus, 6 in MPEC 2008-B26 -- C/2006 S5, 179P, 116P, 110P, 65P, 29P

Impact Risk Monitoring  on 21 January '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of 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 AK33JPL Sentry1522R E M O V E DJPL: Risk listing removed at 1043 UTC.
NEODyS1522R E M O V E D
2008 AF4JPL Sentry15222088-2099251.9e-05-2.43-2.700JPL: "Analysis based on 197 observations spanning 10.580 days (2008-Jan-10.39652 to 2008-Jan-20.97632)." Diameter approximately 0.380 km. from mean, weighted H=19.8.
NEODyS15222083-2090101.11e-05-2.65-2.690NEODyS: "Based on 200 optical observations (of which 3 are rejected as outliers) from 2008/01/10.397 to 2008/01/20.977."

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 21 January '08

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

1522Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Noted that JPL Sentry has removed 2008 AK33 as an impact risk - see above
Noted that NEODyS has removed 2008 AK33 as an impact risk - see above
Grabbed MPEC 2008-B27 - Daily Orbit Update - see above
0101Grabbed MPEC 2008-B26 - Observations of Comets - see above
0024Grabbed MPEC 2008-B22 - Comet C/2007 W1 (Boattini) - see above
Grabbed MPEC 2008-B23 - Comet C/2007 W3 (LINEAR) - see above
Grabbed MPEC 2008-B24 - Comet C/2007 Y1 (LINEAR) - see above
Grabbed MPEC 2008-B25 - Comet C/2008 A1 (McNaught) - see above