Contents  on 9 February '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 9 February '08

The MPC's NEO Confirmation Page has 18 listings: 12 new, 6 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had twelve new and six updated listings. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 31 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 9 February '08

Minor Planet Electronic Circulars

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


MPEC 2008-C58 - "17:45 UT" - 2008 CJ22


MPEC 2008-C57 - "15:24 UT" - 2008 CF22


MPEC 2008-C56 - "15:22 UT" - 2008 CE22


MPEC 2008-C55 - "15:04 UT" - 2008 CD22


MPEC 2008-C54 - "15:02 UT" - 2008 CC22


MPEC 2008-C53 - "14:55 UT" - 2008 CB22


MPEC 2008-C52 - "14:52 UT" - 2008 CA22


MPEC 2008-C51 - "14:49 UT" - 2008 CZ21


MPEC 2008-C50 - "14:46 UT" - 2008 CY21


MPEC 2008-C49 - "14:43 UT" - 2008 CX21


<< DOU on 9 Feb. '08 >>  MPEC 2008-C48 - "07:09 UT" - Daily Orbit Update

Observers  on 9 February '08

A total of 33 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 12 in MPEC 2008-C48 -- 2008 CJ, 2008 CG, 2008 BT2, 2008 BT18, 2008 BO16, 2008 BN16, 2008 BH16, 2008 BE15, 2008 AP33, 2008 AJ33, 2007 XJ16, 2007 VG184
300Bisei Spaceguard Center in Japan, 1 in MPEC 2008-C56 -- 2008 CE22
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2008-C48, 2008-C53, 2008-C55, 2008-C56 & 2008-C57 -- 2008 CF22, 2008 CE22, 2008 CD22, 2008 CB22, 2008 BP16, 2008 BH16, 2005 TU45, 40267, 173561, 1866
A67Chiusa di Pesio Obs., 1 in MPEC 2008-C48 -- 2005 TU45
176Consell Obs. in Spain, 3 in MPECs 2008-C48 & 2008-C53 -- 2008 CB22, 2008 BT18, 2008 AF4
448Desert Moon Obs. in New Mexico, 2 in MPEC 2008-C48 -- 2003 CN17, 2003 AK18
113Drebach Obs. in Germany, 2 in MPEC 2008-C48 -- 2000 CH59, 1989 AZ
151Eschenberg Obs. in Switzerland, 1 in MPEC 2008-C48 -- 2008 BD15
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-C53 -- 2008 CB22
B21Gaisberg Obs. in Austria, 2 in MPECs 2008-C52 & 2008-C54 -- 2008 CC22, 2008 CA22
651Grasslands Obs. in Arizona, 6 in MPECs 2008-C49, 2008-C50, 2008-C51, 2008-C55, 2008-C56 & 2008-C57 -- 2008 CZ21, 2008 CY21, 2008 CX21, 2008 CF22, 2008 CE22, 2008 CD22
J95Great Shefford Obs. in England, 7 in MPECs 2008-C48, 2008-C49, 2008-C50, 2008-C51, 2008-C53 & 2008-C58 -- 2008 CZ21, 2008 CY21, 2008 CX21, 2008 CL20, 2008 CJ22, 2008 CB22, 2006 DU62
B34Green Island Obs. in Cyprus, 3 in MPEC 2008-C48 -- 2008 AF4, 2007 PU11, 2005 TU45
A17Guidestar Obs. in Germany, 3 in MPECs 2008-C48 & 2008-C53 -- 2008 CL20, 2008 CB22, 2008 AF4
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2008-C48 -- 2007 TU24, 2007 TG8, 2005 TU45
246KLENOT in the Czech Republic, 5 in MPEC 2008-C48 -- 2008 CZ4, 2008 CP, 2008 CO, 2008 CE5, 2001 BE16
704LINEAR in New Mexico, 13 in MPECs 2008-C48, 2008-C49, 2008-C50 & 2008-C51 -- 2008 CZ21, 2008 CY4, 2008 CY21, 2008 CX21, 2008 BP16, 2008 AE, 2005 SF, 2002 AV31, 40267, 154347, 153591, 144922, 1620
J75La Sagra Obs. in Spain, 1 in MPEC 2008-C57 -- 2008 CF22
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2008-C48 -- 2008 CP
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2008-C48, 2008-C52, 2008-C53, 2008-C54, 2008-C56 & 2008-C58 -- 2008 CP, 2008 CJ22, 2008 CG, 2008 CE5, 2008 CE22, 2008 CC22, 2008 CB22, 2008 CA22, 2003 BM47, 2000 CG59
J93Mt. Tuffley Obs. in England, 3 in MPEC 2008-C48 -- 170891, 4954, 1036
557Ondrejov Obs. in the Czech Republic, 1 in MPEC 2008-C48 -- 2007 TU24
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2008-C48 -- 4450
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-C48 -- 2002 RC118, 173689
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-C48 -- 2004 HW
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2008-C48 & 2008-C52 -- 2008 CS1, 2008 CQ1, 2008 CH1, 2008 CA22, 2008 BX2, 2008 BT2, 2008 BO16, 2008 AF4, 2007 TA19, 2004 HM1, 2004 FM17
A97Stammersdorf Obs. in Austria, 1 in MPEC 2008-C48 -- 153591
A78Stia Obs. in Italy, 4 in MPEC 2008-C48 -- 2008 CG, 2008 BT18, 2008 BD15, 2008 AF4
147Suno Obs. in Italy, 1 in MPEC 2008-C48 -- 2008 CA5
6735Jim Young via Table Mtn. Obs. in southern California, 9 in MPECs 2008-C48, 2008-C49, 2008-C50, 2008-C51, 2008-C53, 2008-C55, 2008-C56 & 2008-C57 -- 2008 CZ4, 2008 CZ21, 2008 CY21, 2008 CX21, 2008 CS1, 2008 CF22, 2008 CE22, 2008 CD22, 2008 CB22
B01Taunus Obs. in Germany, 1 in MPEC 2008-C48 -- 2007 TU24
A55Vallemare di Borbona Obs. in Italy, 1 in MPEC 2008-C53 -- 2008 CB22
A48Verona Obs. in Italy, 2 in MPEC 2008-C48 -- 2008 CP, 2008 CN1

Impact Risk Monitoring  on 9 February '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 CF22JPL Sentry19012028-205259.0e-05-4.19-4.580JPL: "Analysis based on 33 observations spanning .43319 days (2008-Feb-09.06346 to 2008-Feb-09.49665)." Diameter approximately 0.022 km. from mean, weighted H=26.0.
2008 CE22JPL Sentry1939210412.1e-07-7.74-7.740JPL: "Analysis based on 38 observations spanning .23078 days (2008-Feb-09.29929 to 2008-Feb-09.53007)." Diameter approximately 0.018 km. from mean, weighted H=26.4.
2008 CD22JPL Sentry18272015-2106532.7e-08-6.16-7.230JPL: "Analysis based on 15 observations spanning .12716 days (2008-Feb-09.22668 to 2008-Feb-09.35384)." Diameter approximately 0.130 km. from mean, weighted H=22.1.
2008 CB22JPL Sentry1939210013.2e-09-6.10-6.100JPL: "Analysis based on 37 observations spanning 1.0890 days (2008-Feb-08.41828 to 2008-Feb-09.50727)." Diameter approximately 0.420 km. from mean, weighted H=19.5.
2008 CZ21JPL Sentry18052010-21071125.1e-08-4.36-4.730JPL: "Analysis based on 13 observations spanning .93493 days (2008-Feb-08.2891 to 2008-Feb-09.22403)." Diameter approximately 0.300 km. from mean, weighted H=20.3.
2008 CM20JPL Sentry18272008-2084266.0e-08-3.63-3.640JPL: "Analysis based on 21 observations spanning .65199 days (2008-Feb-08.1746 to 2008-Feb-08.82659)." Diameter approximately 0.210 km. from mean, weighted H=21.1.
NEODyS18052008-208431.96e-08-5.49-5.760NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2008/02/08.175 to 2008/02/08.827."
2008 CD6NEODyS23302012-20901811.72e-06-4.84-5.390NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/02/07.318 to 2008/02/08.331."
2008 CB6NEODyS18052035-2089419.99e-06-5.99-6.180NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/02/07.293 to 2008/02/08.330."
2008 CA5JPL Sentry1558R E M O V E DJPL: Risk listing removed at 1158 UTC.
NEODyS1558R E M O V E D
2008 CS1NEODyS15592044-2090171.5e-06-3.33-3.850NEODyS: "Based on 27 optical observations (of which 2 are rejected as outliers) from 2008/02/03.503 to 2008/02/08.531."
JPL Sentry15582044-2107231.8e-06-3.28-3.830JPL: "Analysis based on 25 observations spanning 5.0282 days (2008-Feb-03.50178 to 2008-Feb-08.52998)." Diameter approximately 0.300 km. from mean, weighted H=20.3.
2008 CJJPL Sentry15582033-210638.3e-07-7.59-7.600JPL: "Analysis based on 13 observations spanning 1.0540 days (2008-Feb-02.24586 to 2008-Feb-03.299901)." Diameter approximately 0.012 km. from mean, weighted H=27.3.
NEODyS1558R E M O V E D
2008 BO16NEODyS1559204513.28e-06-3.97-3.970NEODyS: "Based on 43 optical observations (of which 2 are rejected as outliers) from 2008/01/30.382 to 2008/02/08.309."
JPL Sentry1558204512.8e-06-4.03-4.030JPL: "Analysis based on 42 observations spanning 8.9272 days (2008-Jan-30.38083 to 2008-Feb-08.30803)." Diameter approximately 0.088 km. from mean, weighted H=22.9.
2008 BN16NEODyS15592067-208673.19e-07-6.90-7.190NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/01/30.248 to 2008/02/03.279."
JPL Sentry15582067-208652.6e-07-6.98-7.180JPL: "Analysis based on 20 observations spanning 4.0304 days (2008-Jan-30.24765 to 2008-Feb-03.27809)." Diameter approximately 0.022 km. from mean, weighted H=25.9.
2008 AF4NEODyS15592067-2090161.05e-05-2.65-2.770NEODyS: "Based on 430 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/02/08.897."
JPL Sentry15582078-2100332.2e-05-2.36-2.770JPL: "Analysis based on 426 observations spanning 29.500 days (2008-Jan-10.39652 to 2008-Feb-08.89639)." Diameter approximately 0.390 km. from mean, weighted H=19.7.

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 9 February '08

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

2330Noted that NEODyS has posted 2008 CD6 as an impact risk - see above
1939Noted that JPL Sentry has posted 2008 CB22 as an impact risk - see above
Noted that JPL Sentry has posted 2008 CE22 as an impact risk - see above
1901Noted that JPL Sentry has posted 2008 CF22 as an impact risk - see above
1827Noted that JPL Sentry has posted 2008 CD22 as an impact risk - see above
Noted that JPL Sentry has posted 2008 CM20 as an impact risk - see above
1805Noted that NEODyS has posted 2008 CB6 as an impact risk - see above
Noted that NEODyS has posted 2008 CM20 as an impact risk - see above
Noted that JPL Sentry has posted 2008 CZ21 as an impact risk - see above
1804Grabbed MPEC 2008-C58 - 2008 CJ22 - see above
1559Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has updated its 2008 BN16 risk assessment - see above
Noted that NEODyS has updated its 2008 BO16 risk assessment - see above
Noted that NEODyS has updated its 2008 CS1 risk assessment - see above
1558Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 BN16 risk assessment - see above
Noted that JPL Sentry has updated its 2008 BO16 risk assessment - see above
Noted that JPL Sentry has removed 2008 CA5 as an impact risk - see above
Noted that NEODyS has removed 2008 CA5 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 CJ risk assessment - see above
Noted that NEODyS has removed 2008 CJ as an impact risk - see above
Noted that JPL Sentry has updated its 2008 CS1 risk assessment - see above
Grabbed MPEC 2008-C48 - Daily Orbit Update - see above
Grabbed MPEC 2008-C49 - 2008 CX21 - see above
Grabbed MPEC 2008-C50 - 2008 CY21 - see above
Grabbed MPEC 2008-C51 - 2008 CZ21 - see above
Grabbed MPEC 2008-C52 - 2008 CA22 - see above
Grabbed MPEC 2008-C53 - 2008 CB22 - see above
Grabbed MPEC 2008-C54 - 2008 CC22 - see above
Grabbed MPEC 2008-C55 - 2008 CD22 - see above
Grabbed MPEC 2008-C56 - 2008 CE22 - see above
Grabbed MPEC 2008-C57 - 2008 CF22 - see above