Contents  on 9 March '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 March '08

The MPC's NEO Confirmation Page has 18 listings: 2 new, 16 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and sixteen 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 9 March '08

Minor Planet Electronic Circulars

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


MPEC 2008-E72 - "19:02 UT" - 2008 ED8


<< DOU on 9 Mar. '08 >>  MPEC 2008-E71 - "07:08 UT" - Daily Orbit Update

Observers  on 9 March '08

A total of 30 observing facilities appear in today's MPECs.

CodeObserver / observatory
J32Aljaraque Obs., 3 in MPEC 2008-E71 -- 3288, 1685, 1620
H55Astronomical Research Obs. (ARO) in Illinois, 8 in MPECs 2008-E71 & 2008-E72 -- 2008 EW5, 2008 ES, 2008 ER, 2008 EO, 2008 EH, 2008 EE, 2008 ED8, 2008 DV22
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-E71 -- 2005 EA
I77CEAMIG-REA in Brazil, 1 in MPEC 2008-E72 -- 2008 ED8
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2008-E71 -- 2003 GS, 90403, 170891, 153591
448Desert Moon Obs. in New Mexico, 5 in MPEC 2008-E71 -- 2008 EE, 2008 DJ5, 2008 DE, 2008 CL72, 2006 AD
639Dresden Obs. in Germany, 2 in MPEC 2008-E71 -- 2008 EL, 2008 EK1
151Eschenberg Obs. in Switzerland, 1 in MPEC 2008-E71 -- 2008 EZ7
651Grasslands Obs. in Arizona, 1 in MPEC 2008-E72 -- 2008 ED8
J95Great Shefford Obs. in England, 1 in MPEC 2008-E71 -- 2008 EZ7
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2008-E71 -- 2007 TG8
379Hamamatsu-Yuto Obs. in Japan, 5 in MPEC 2008-E71 -- 2008 CL1, 2007 VQ4, 2005 EK70, 2005 BE2, 2002 TD66
B15Inastars Obs. in Germany, 5 in MPEC 2008-E71 -- 2007 TU24, 154347, 152942, 144922, 136618
246KLENOT in the Czech Republic, 1 in MPEC 2008-E72 -- 2008 ED8
046Klet Obs. in the Czech Republic, 4 in MPECs 2008-E71 & 2008-E72 -- 2008 EL, 2008 EK1, 2008 ED8, 2008 DJ
704LINEAR in New Mexico, 15 in MPECs 2008-E71 & 2008-E72 -- 2008 EP, 2008 ED8, 2008 DK5, 2008 CL72, 2008 CL1, 2008 BT18, 1993 TQ2, 99935, 85709, 85628, 22099, 144922, 13553, 9856, 9162
620Mallorca Obs. on Mallorca, 1 in MPEC 2008-E71 -- 2008 EZ7
5682David Tholen's team (Tholen et al.) on Mauna Kea in Hawaii, 2 in MPEC 2008-E71 -- 2008 CH116, 2008 BO16
711McDonald Obs. in Texas, 14 in MPEC 2008-E71 -- 2008 EX5, 2008 EO6, 2008 EK1, 2008 EH, 2008 DY, 2008 DE, 2008 DA4, 2008 CM116, 2008 BE, 2008 AF4, 2004 HW, 2000 DP107, 68359, 154589
474Mt. John Obs. in New Zealand, 4 in MPECs 2008-E71 & 2008-E72 -- 2008 EP6, 2008 EL6, 2008 ED8, 2008 DL4
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2008-E71 & 2008-E72 -- 2008 ED8, 41429
A13Naef Obs. in Switzerland, 3 in MPEC 2008-E71 -- 2008 EZ7, 2008 DK5, 164222
J69North Obs. in England, 2 in MPEC 2008-E71 -- 2008 CL1, 11398
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2008-E71 -- 2008 CN1, 2008 BT18, 2002 TD66
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2008-E72 -- 2008 ED8
H68Red Barn Obs. in Georgia, 1 in MPEC 2008-E72 -- 2008 ED8
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2008-E71 & 2008-E72 -- 2008 EZ7, 2008 EY5, 2008 EP6, 2008 EJ1, 2008 ED8, 2005 NB7, 163243
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-E71 -- 2003 QZ30, 2059
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2008-E71 & 2008-E72 -- 2008 EX5, 2008 ER7, 2008 EM7, 2008 ED8, 2008 DB, 2008 DA4, 2003 BQ35
B18Terskol Obs. in Russia, 2 in MPEC 2008-E71 -- 2002 TD66, 1620

Impact Risk Monitoring  on 9 March '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 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
2008 ED8JPL Sentry22022080-209321.1e-06-5.92-6.010JPL: "Analysis based on 66 observations spanning 1.3746 days (2008-Mar-08.16797 to 2008-Mar-09.54253)." Diameter approximately 0.048 km. from mean, weighted H=24.3.
2008 EA8NEODyS2110202112.88e-11-8.03-8.030NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/03/06.253 to 2008/03/08.291."
2008 EZ7JPL Sentry1531R E M O V E DJPL: Risk listing removed at 1511 UTC.
2008 ER7NEODyS20002009-2090892.26e-06-3.21-4.070NEODyS #2: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/08.427."
JPL Sentry14472014-21087341.6e-05-2.45-3.690JPL: "Analysis based on 18 observations spanning 2.0899 days (2008-Mar-06.33608 to 2008-Mar-08.42602)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
2008 EM7NEODyS14502014-2088337.32e-07-4.00-4.460NEODyS: "Based on 25 optical observations (of which 1 are rejected as outliers) from 2008/03/06.258 to 2008/03/08.247."
JPL Sentry14472014-2105799.4e-07-3.93-4.410JPL: "Analysis based on 24 observations spanning 1.9888 days (2008-Mar-06.25767 to 2008-Mar-08.24642)." Diameter approximately 0.170 km. from mean, weighted H=21.5.
2008 EL6JPL Sentry1706R E M O V E DJPL: Risk listing removed at 1639 UTC.
NEODyS1447R E M O V E D
2008 EX5NEODyS14502049-20901992.95e-05-4.17-4.980NEODyS: "Based on 24 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/03/08.458."
JPL Sentry14472049-21061563.4e-05-4.15-5.090JPL: "Analysis based on 23 observations spanning 4.0619 days (2008-Mar-04.39523 to 2008-Mar-08.45712)." Diameter approximately 0.056 km. from mean, weighted H=23.9.
2008 DA4JPL Sentry1447210011.8e-07-6.53-6.530JPL: "Analysis based on 55 observations spanning 10.103 days (2008-Feb-27.28072 to 2008-Mar-08.38364)." Diameter approximately 0.055 km. from mean, weighted H=23.9.
2008 DBNEODyS14502046-2090235.38e-05-4.66-4.710NEODyS: "Based on 62 optical observations (of which 2 are rejected as outliers) from 2008/02/18.243 to 2008/03/08.341."
JPL Sentry14472046-2108287.5e-05-4.53-4.590JPL: "Analysis based on 61 observations spanning 19.098 days (2008-Feb-18.242 to 2008-Mar-08.33987)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
2008 BO16JPL Sentry1447R E M O V E DJPL: Risk listing removed at 1257 UTC.
NEODyS1447R E M O V E D
2008 AF4JPL Sentry21102078-210084.7e-05-2.00-2.091JPL #2 for the day: "Analysis based on 575 observations spanning 57.824 days (2008-Jan-10.39652 to 2008-Mar-08.22017)." Diameter approximately 0.390 km. from mean, weighted H=19.7.
NEODyS14482078-208933.64e-05-2.10-2.101NEODyS: "Based on 579 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/03/08.221. NOTE: The Virtual Impactor in 2089/01/09.479 ... is rated as Torino Scale 1."

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 March '08

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

2202Noted that JPL Sentry has posted 2008 ED8 as an impact risk - see above
2110Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has posted 2008 EA8 as an impact risk - see above
2000Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
1918Grabbed MPEC 2008-E72 - 2008 ED8 - see above
1706Noted that JPL Sentry has removed 2008 EL6 as an impact risk - see above
1531Noted that JPL Sentry has removed 2008 EZ7 as an impact risk - see above
1450Noted that NEODyS has updated its 2008 DB risk assessment - see above
Noted that NEODyS has updated its 2008 EM7 risk assessment - see above
Noted that NEODyS has updated its 2008 EX5 risk assessment - see above
1448Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
1447Noted that JPL Sentry has removed 2008 BO16 as an impact risk - see above
Noted that NEODyS has removed 2008 BO16 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 DA4 risk assessment - see above
Noted that JPL Sentry has updated its 2008 DB risk assessment - see above
Noted that NEODyS has removed 2008 EL6 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 EM7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 EX5 risk assessment - see above
Grabbed MPEC 2008-E71 - Daily Orbit Update - see above
0239Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
0128Noted that NEODyS has posted 2008 ER7 as an impact risk - see above