Contents  on 20 March '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 March '10

The MPC's NEO Confirmation Page has 12 listings: 2 new, 10 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and ten updated listings. Of these, nine were "one nighters." So far The Tracking News has counted a total of thirteen 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 March '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 20 Mar. '10 >>  MPEC 2010-F46 - "06:09 UT" - Daily Orbit Update


MPEC 2010-F45 - "05:22 UT" - 2009 WN

Observers  on 20 March '10

Seventeen observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2010-F46 -- 2010 FQ
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 16 in MPEC 2010-F46 -- 2010 FT, 2010 FR, 2010 FO, 2010 FM, 2010 FK, 2010 FC, 2010 EH43, 2010 EF44, 2010 EC43, 2010 DM, 2010 CM44, 2010 CD19, 2010 BG2, 2010 BC3, 2009 UV18, 2007 TD14
703Catalina Sky Survey (CSS) in Arizona, 5 in MPEC 2010-F46 -- 2010 FU, 85990, 40267, 163132, 3554
448Desert Moon Obs. in New Mexico, 7 in MPEC 2010-F46 -- 2010 EV45, 2010 EQ43, 2010 EJ43, 2010 CR1, 2010 BC3, 2009 WC26, 162882
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2010-F46 -- 2010 CC180, 2000 CO101
H75Indian Hill North Obs. in Ohio, 1 in MPEC 2010-F46 -- 88254
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2010-F46 -- 2007 JZ20
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2010-F46 -- 2010 EA46
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPEC 2010-F46 -- 2004 RK, 1999 RC32, 39796, 144861, 9162, 1627
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-F45 -- 2009 WN
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2010-F46 -- 2010 FQ, 2010 EX11, 2010 CC180, 2009 UD2, 2008 EE, 2004 TR13, 2000 CO101
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2010-F46 -- 68216
H68Red Barn Obs. in Georgia, 1 in MPEC 2010-F46 -- 163243
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPEC 2010-F46 -- 2010 FU, 2010 EF21, 2009 UE2, 2007 EP88, 2004 QY2, 5653
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-F46 -- 39796
291Spacewatch 1.8m telescope in Arizona, 13 in MPEC 2010-F46 -- 2010 FR, 2010 FD, 2010 EW45, 2010 ES12, 2010 EH20, 2010 EG43, 2010 ED43, 2010 EC43, 2010 EA46, 2010 CM19, 2006 SV189, 2002 TY68, 159495
926Tenagra II Obs. in Arizona, 15 in MPEC 2010-F46 -- 2010 FU, 2010 FT, 2010 FQ, 2010 FN, 2010 FM, 2010 FC, 2010 FB, 2010 EX11, 2010 EV45, 2010 EK44, 2010 EK43, 2010 EJ43, 2010 EH43, 2010 EG21, 2010 EF43
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 March '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS 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. Both also post impact solutions beyond 100 years for a few special 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 FD6NEODyS15092016-2089695.75e-06-6.24-7.030NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2010/03/18.422 to 2010/03/19.361."
JPL Sentry01022016-2054292.6e-06-6.58-7.300JPL: "Analysis based on 15 observations spanning .93898 days (2010-Mar-18.42123 to 2010-Mar-19.36021)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2010 FTJPL Sentry1509R E M O V E DJPL: Risk listing removed at 1031 UTC.
NEODyS1509R E M O V E D-
2010 FRJPL Sentry1509207911.3e-09-7.35-7.350JPL: "Analysis based on 35 observations spanning 1.0716 days (2010-Mar-18.36381 to 2010-Mar-19.435389)." Diameter approximately 0.170 km. from mean, weighted H=21.5.
NEODyS1509R E M O V E D-
2010 FQJPL Sentry1509R E M O V E DJPL: Risk listing removed at 0957 UTC.
2010 FNJPL Sentry15092079-209381.2e-06-7.01-7.200JPL: "Analysis based on 25 observations spanning 1.9470 days (2010-Mar-17.24321 to 2010-Mar-19.1902)." Diameter approximately 0.016 km. from mean, weighted H=26.6.
NEODyS15092078-208461.23e-06-7.00-7.240NEODyS: "Based on 26 optical observations (of which 1 are rejected as outliers) from 2010/03/17.244 to 2010/03/19.191."
2010 FDJPL Sentry15092085-209922.5e-07-7.34-7.420JPL: "Analysis based on 28 observations spanning 2.8750 days (2010-Mar-16.34477 to 2010-Mar-19.21976)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
NEODyS1509R E M O V E D-
2010 EA46JPL Sentry15092041-205024.1e-07-5.67-5.680JPL: "Analysis based on 35 observations spanning 3.8987 days (2010-Mar-15.39725 to 2010-Mar-19.29593)." Diameter approximately 0.059 km. from mean, weighted H=23.8.
NEODyS15092041-205024.62e-07-5.65-5.650NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2010/03/15.398 to 2010/03/19.297."
2010 EW45JPL Sentry15092012-2108191.7e-07-2.59-3.020JPL: "Analysis based on 35 observations spanning 4.0312 days (2010-Mar-15.10972 to 2010-Mar-19.14097)." Diameter approximately 0.962 km. from mean, weighted H=17.7.
NEODyS15092016-2080121.28e-07-2.71-3.050NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2010/03/15.110 to 2010/03/19.142."
2010 EK44JPL Sentry15092099-210322.9e-09-6.14-6.210JPL: "Analysis based on 31 observations spanning 5.8480 days (2010-Mar-13.35941 to 2010-Mar-19.20741)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2010 EC43JPL Sentry1509R E M O V E DJPL: Risk listing removed at 0950 UTC.
NEODyS1509R E M O V E D-

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 March '10

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

1509Noted that JPL Sentry has updated its 2010 EA46 risk assessment - see above
Noted that NEODyS has updated its 2010 EA46 risk assessment - see above
Noted that JPL Sentry has removed 2010 EC43 as an impact risk - see above
Noted that NEODyS has removed 2010 EC43 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 EK44 risk assessment - see above
Noted that JPL Sentry has updated its 2010 EW45 risk assessment - see above
Noted that NEODyS has updated its 2010 EW45 risk assessment - see above
Noted that JPL Sentry has updated its 2010 FD risk assessment - see above
Noted that NEODyS has removed 2010 FD as an impact risk - see above
Noted that NEODyS has posted 2010 FD6 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 FN risk assessment - see above
Noted that NEODyS has updated its 2010 FN risk assessment - see above
Noted that JPL Sentry has removed 2010 FQ as an impact risk - see above
Noted that JPL Sentry has updated its 2010 FR risk assessment - see above
Noted that NEODyS has removed 2010 FR as an impact risk - see above
Noted that JPL Sentry has removed 2010 FT as an impact risk - see above
Noted that NEODyS has removed 2010 FT as an impact risk - see above
Grabbed MPEC 2010-F46 - Daily Orbit Update - see above
0557Grabbed MPEC 2010-F45 - 2009 WN - see above
0102Noted that JPL Sentry has posted 2010 FD6 as an impact risk - see above