Contents  on 21 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 21 March '10

The MPC's NEO Confirmation Page has 5 listings: 5 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of 21 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 21 March '10

Minor Planet Electronic Circulars

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


MPEC 2010-F60 - "22:19 UT" - 2010 FX9


MPEC 2010-F59 - "22:17 UT" - 2010 FW9


MPEC 2010-F58 - "22:15 UT" - 2010 FV9


MPEC 2010-F57 - "22:12 UT" - 2010 FU9


MPEC 2010-F56 - "22:09 UT" - 2010 FT9


MPEC 2010-F55 - "22:06 UT" - 2010 FS9


MPEC 2010-F54 - "22:02 UT" - 2010 FR9


MPEC 2010-F53 - "21:59 UT" - 2010 FQ9


MPEC 2010-F52 - "21:55 UT" - 2010 FP9


<< DOU on 21 Mar. '10 >>  MPEC 2010-F51 - "06:08 UT" - Daily Orbit Update


MPEC 2010-F50 - "02:26 UT" - Comet P/2002 FA9 = 2010 F2 (LINEAR)


MPEC 2010-F49 - "00:27 UT" - 2010 FF7


MPEC 2010-F48 - "00:24 UT" - 2010 FE7


MPEC 2010-F47 - "00:21 UT" - 2010 FD7

Observers  on 21 March '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 10 in MPECs 2010-F47, 2010-F49 & 2010-F51 -- 2010 FU, 2010 FL, 2010 FF7, 2010 FD7, 2010 FB, 2010 EZ45, 2010 EX11, 2010 EJ43, 2010 EG21, 2010 CM44
160Castelmartini Obs. in Italy, 7 in MPEC 2010-F51 -- 2006 CX10, 2004 TR13, 90367, 86067, 54789, 24761, 207945
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2010-F49, 2010-F50, 2010-F51, 2010-F55, 2010-F56, 2010-F57 & 2010-F60 -- 2010 FX9, 2010 FU9, 2010 FT9, 2010 FS9, 2010 FF7, P/2010 F2, 2010 EJ43, 2000 CO101, 1998 KN3
H75Indian Hill North Obs. in Ohio, 1 in MPEC 2010-F51 -- 1998 KN3
D95Kurihara Obs. in Japan, 1 in MPEC 2010-F51 -- 1627
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2010-F51 -- 2010 DJ56
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2010-F47, 2010-F48 & 2010-F49 -- 2010 FF7, 2010 FE7, 2010 FD7
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2010-F47, 2010-F48, 2010-F49, 2010-F51, 2010-F53, 2010-F54, 2010-F55, 2010-F56, 2010-F57, 2010-F58, 2010-F59 & 2010-F60 -- 2010 FX9, 2010 FW9, 2010 FV9, 2010 FU9, 2010 FT9, 2010 FS9, 2010 FR9, 2010 FQ9, 2010 FF7, 2010 FE7, 2010 FD7, 2010 EJ43
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-F60 -- 2010 FX9
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-F49 -- 2010 FF7
854Sabino Canyon Obs. in Arizona, 5 in MPECs 2010-F54, 2010-F55, 2010-F56, 2010-F57 & 2010-F58 -- 2010 FV9, 2010 FU9, 2010 FT9, 2010 FS9, 2010 FR9
204Schiaparelli Obs. in Italy, 5 in MPEC 2010-F51 -- 2010 EZ45, 2010 EX11, 2010 EJ43, 2010 EF44, 2003 UL12
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2010-F50 & 2010-F51 -- 2010 FU, P/2010 F2, 7358, 2368
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2010-F47, 2010-F51 & 2010-F52 -- 2010 FP9, 2010 FD7, 136618
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2010-F47, 2010-F51 & 2010-F52 -- 2010 FP9, 2010 FD7, 2010 EX11, 2010 EW45, 2010 EH20, 2010 EC43, 2010 EA46, 2010 CN44, 2010 CH55
926Tenagra II Obs. in Arizona, 22 in MPECs 2010-F47, 2010-F48, 2010-F49, 2010-F51, 2010-F52, 2010-F53, 2010-F54, 2010-F55, 2010-F56, 2010-F57, 2010-F58 & 2010-F59 -- 2010 FW9, 2010 FV9, 2010 FU9, 2010 FT9, 2010 FS9, 2010 FS, 2010 FR9, 2010 FR, 2010 FQ9, 2010 FQ, 2010 FP9, 2010 FP, 2010 FN, 2010 FM, 2010 FL, 2010 FK, 2010 FF7, 2010 FE7, 2010 FD7, 2010 FD, 2010 FB, 2010 EB43
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 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 FT9JPL Sentry23592059-209048.2e-08-6.80-6.880JPL: "Analysis based on 19 observations spanning 1.1008 days (2010-Mar-20.35895 to 2010-Mar-21.45978)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
2010 FS9JPL Sentry2359204111.4e-10-9.65-9.650JPL: "Analysis based on 24 observations spanning 1.0099 days (2010-Mar-20.35838 to 2010-Mar-21.36824)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
2010 FQ9JPL Sentry2359202111.3e-10-8.24-8.240JPL: "Analysis based on 14 observations spanning 1.0845 days (2010-Mar-20.31596 to 2010-Mar-21.40049)." Diameter approximately 0.098 km. from mean, weighted H=22.7.
2010 FE7NEODyS15532014-20901662.34e-06-4.85-5.540NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2010/03/19.331 to 2010/03/20.399."
JPL Sentry03362012-21094363.6e-06-4.65-5.300JPL: "Analysis based on 16 observations spanning 1.0676 days (2010-Mar-19.33039 to 2010-Mar-20.39794)." Diameter approximately 0.056 km. from mean, weighted H=23.9.
2010 FD7NEODyS15532021-2087238.55e-09-6.52-7.060NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2010/03/19.292 to 2010/03/20.444."
JPL Sentry02322015-2109483.9e-08-5.86-6.600JPL: "Analysis based on 24 observations spanning 1.1514 days (2010-Mar-19.29153 to 2010-Mar-20.44289)." Diameter approximately 0.130 km. from mean, weighted H=22.1.
2010 FRJPL Sentry1553R E M O V E DJPL: Risk listing removed at 1035 UTC.
2010 FNJPL Sentry15532079-209292.1e-06-6.78-7.120JPL: "Analysis based on 28 observations spanning 2.9452 days (2010-Mar-17.24321 to 2010-Mar-20.18843)." Diameter approximately 0.016 km. from mean, weighted H=26.7.
NEODyS15532082-209081.82e-06-6.85-7.160NEODyS: "Based on 29 optical observations (of which 1 are rejected as outliers) from 2010/03/17.244 to 2010/03/20.189."
2010 FDJPL Sentry15532085-209923.2e-07-7.24-7.240JPL: "Analysis based on 30 observations spanning 4.1168 days (2010-Mar-16.34477 to 2010-Mar-20.4616)." Diameter approximately 0.021 km. from mean, weighted H=26.1.
NEODyS1553208513.03e-07-7.26-7.260NEODyS: "Based on 31 optical observations (of which 1 are rejected as outliers) from 2010/03/16.346 to 2010/03/20.462."
2010 EA46JPL Sentry1553R E M O V E DJPL: Risk listing removed at 0949 UTC.
NEODyS1553R E M O V E D-
2010 EW45JPL Sentry15532016-2098202.1e-07-2.62-2.910JPL: "Analysis based on 38 observations spanning 5.0282 days (2010-Mar-15.10972 to 2010-Mar-20.13796)." Diameter approximately 0.921 km. from mean, weighted H=17.8.
NEODyS15532016-2080131.51e-07-2.74-2.970NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2010/03/15.110 to 2010/03/20.139."
2005 YU55NEODyS18012043-2109943.09e-04-2.25-2.561NEODyS: "Based on 66 optical observations (of which 1 are rejected as outliers) from 2005/12/24.299 to 2010/03/18.426. NOTE: The Virtual Impactor in 2103/11/10.386 ... are rated as Torino Scale 1."
JPL Sentry16332046-2109456.2e-04-1.95-1.961JPL: "Analysis based on 66 observations spanning 1545.1 days (2005-Dec-24.29832 to 2010-Mar-18.42529)." Diameter approximately 0.140 km. from mean, weighted H=21.9.
153814 2001 WN5JPL Sentry1633213317.3e-06-2.32-2.32n/aJPL: "Analysis based on 127 observations spanning 5150.1 days (1996-Feb-10.39593 to 2010-Mar-18.45383)." Diameter approximately 0.770 km. from mean, weighted H=18.2.

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 March '10

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

2359Noted that JPL Sentry has posted 2010 FQ9 as an impact risk - see above
Noted that JPL Sentry has posted 2010 FS9 as an impact risk - see above
Noted that JPL Sentry has posted 2010 FT9 as an impact risk - see above
2226Grabbed MPEC 2010-F52 - 2010 FP9 - see above
Grabbed MPEC 2010-F53 - 2010 FQ9 - see above
Grabbed MPEC 2010-F54 - 2010 FR9 - see above
Grabbed MPEC 2010-F55 - 2010 FS9 - see above
Grabbed MPEC 2010-F56 - 2010 FT9 - see above
Grabbed MPEC 2010-F57 - 2010 FU9 - see above
Grabbed MPEC 2010-F58 - 2010 FV9 - see above
Grabbed MPEC 2010-F59 - 2010 FW9 - see above
Grabbed MPEC 2010-F60 - 2010 FX9 - see above
1801Noted that NEODyS has updated its 2005 YU55 risk assessment - see above
1633Noted that JPL Sentry has updated its 153814 2001 WN5 risk assessment - see above
Noted that JPL Sentry has updated its 2005 YU55 risk assessment - see above
1553Noted that JPL Sentry has removed 2010 EA46 as an impact risk - see above
Noted that NEODyS has removed 2010 EA46 as an impact risk - 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 reposted 2010 FD as an impact risk - see above
Noted that NEODyS has posted 2010 FD7 as an impact risk - see above
Noted that NEODyS has posted 2010 FE7 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 FR as an impact risk - see above
Grabbed MPEC 2010-F51 - Daily Orbit Update - see above
0336Noted that JPL Sentry has posted 2010 FE7 as an impact risk - see above
0304Grabbed MPEC 2010-F50 - Comet P/2002 FA9 = 2010 F2 (LINEAR) - see above
0232Noted that JPL Sentry has posted 2010 FD7 as an impact risk - see above
0103Grabbed MPEC 2010-F47 - 2010 FD7 - see above
Grabbed MPEC 2010-F48 - 2010 FE7 - see above
Grabbed MPEC 2010-F49 - 2010 FF7 - see above