Contents  on 19 February '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 19 February '10

The MPC's NEO Confirmation Page has 7 listings: 3 new, 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and four updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of 23 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 19 February '10

Minor Planet Electronic Circulars

As of last check at 2348 UTC, there have been nine MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-D55 - "22:19 UT" - 2010 DZ1


MPEC 2010-D54 - "22:11 UT" - 2010 DY1


MPEC 2010-D53 - "22:09 UT" - 2010 DX1


MPEC 2010-D52 - "22:05 UT" - 2010 DW1


MPEC 2010-D51 - "19:10 UT" - Comet P/2010 D1 (WISE)


MPEC 2010-D50 - "18:21 UT" - 2010 DU1


MPEC 2010-D49 - "18:15 UT" - 2010 DT1


<< DOU on 19 Feb. '10 >>  MPEC 2010-D48 - "07:22 UT" - Daily Orbit Update


MPEC 2010-D47 - "05:15 UT" - 2010 DN1

Observers  on 19 February '10

A total of 20 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 19 in MPECs 2010-D48, 2010-D53, 2010-D54 & 2010-D55 -- 2010 DZ1, 2010 DY1, 2010 DX1, 2010 DP, 2010 DF1, 2010 DA, 2010 CS19, 2010 CP19, 2010 CN, 2010 CM44, 2010 CM19, 2010 CL18, 2010 CL1, 2010 CJ18, 2010 CH55, 2010 BC3, 2009 XC2, 2009 UV18, 153814
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2010-D48, 2010-D51, 2010-D53, 2010-D54 & 2010-D55 -- 2010 DZ1, 2010 DY1, 2010 DX1, 2010 DO, P/2010 D1, 2010 CL18, 2010 BC3
G58Chabot Obs. in northern California, 1 in MPEC 2010-D48 -- 2010 CO44
448Desert Moon Obs. in New Mexico, 6 in MPEC 2010-D48 -- 2010 DA, 2010 CM44, 2010 CL18, 2010 CG19, 2009 XC2, 53110
J95Great Shefford Obs. in England, 3 in MPECs 2010-D53, 2010-D54 & 2010-D55 -- 2010 DZ1, 2010 DY1, 2010 DX1
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-D48 -- 2009 UN3, 2000 CO101, 54789
046Klet Obs. in the Czech Republic, 1 in MPEC 2010-D48 -- 2010 CC19
704LINEAR in New Mexico, 19 in MPECs 2010-D48 & 2010-D52 -- 2010 DW1, 2010 CF19, 2007 UR3, 2006 EE1, 2002 XY38, 2002 NW16, 1996 BA1, 99248, 40263, 27346, 175706, 162998, 162038, 16064, 137925, 8567, 4015, 2368, 1864
H01Magdalena Ridge Obs. (MRO) in New Mexico, 10 in MPECs 2010-D47, 2010-D48, 2010-D49, 2010-D50, 2010-D53, 2010-D54 & 2010-D55 -- 2010 DZ1, 2010 DY1, 2010 DX1, 2010 DU1, 2010 DT1, 2010 DP, 2010 DN1, 2010 DM, 2010 CS19, 2010 CH55
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2010-D47, 2010-D48, 2010-D49 & 2010-D50 -- 2010 DU1, 2010 DT1, 2010 DN1, 2002 CY58, 96631, 16064, 4015
A13Naef Obs. in Switzerland, 3 in MPEC 2010-D48 -- 2003 BT47, 2002 AJ129, 86067
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2010-D48 -- 2010 BB3, 2008 EE, 2005 TY51, 2003 CH11, 2003 BT47, 2002 WP, 2001 PT9, 2000 CO101, 1999 RC32, 214088
204Schiaparelli Obs. in Italy, 6 in MPEC 2010-D48 -- 2010 CN, 2010 CL1, 2010 CA, 2010 BG2, 2010 BC3, 2006 AO4
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2010-D48 & 2010-D52 -- 2010 DW1, 2010 DA
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-D48 -- 2008 EB9, 2002 NV16
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2010-D48 & 2010-D51 -- 2010 DP, 2010 DH1, P/2010 D1, 2010 CS19, 2010 CR5, 2010 CQ19, 2010 CN44, 2010 CH55, 2003 BQ35
926Tenagra II Obs. in Arizona, 14 in MPECs 2010-D47, 2010-D48, 2010-D49, 2010-D50, 2010-D53, 2010-D54 & 2010-D55 -- 2010 DZ1, 2010 DY1, 2010 DX1, 2010 DU1, 2010 DT1, 2010 DP, 2010 DO, 2010 DN1, 2010 DC, 2010 CP19, 2010 CJ18, 2010 CH18, 2010 CD55, 2010 CC19
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-D48 -- 163132
C00Velikie Luki Obs. in Russia, 1 in MPEC 2010-D48 -- 2003 BT47
C51WISE in Earth polar orbit, 4 in MPECs 2010-D48 & 2010-D51 -- P/2010 D1, 2010 CO1, 2010 CH18, 2008 EV5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 February '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2348 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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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 DJ1JPL Sentry2102R E M O V E DJPL: Risk listing removed at 2051 UTC.
2010 DH1JPL Sentry1422R E M O V E DJPL: Risk listing removed at 1133 UTC.
2010 DG1NEODyS1422205112.05e-10-9.13-9.130NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2010/02/17.211 to 2010/02/18.288."
2010 DPJPL Sentry1422R E M O V E DJPL: Risk listing removed at 1131 UTC.
NEODyS1422R E M O V E D-
2010 DMJPL Sentry14222030-210861.7e-09-4.84-5.100JPL: "Analysis based on 19 observations spanning 2.0815 days (2010-Feb-16.32523 to 2010-Feb-18.40672)." Diameter approximately 0.713 km. from mean, weighted H=18.4.
NEODyS14222030-207247.95e-10-4.99-5.060NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2010/02/16.326 to 2010/02/18.407."
2010 CH55JPL Sentry14222022-2091582.1e-08-4.80-5.910JPL: "Analysis based on 32 observations spanning 2.9632 days (2010-Feb-15.466 to 2010-Feb-18.42924)." Diameter approximately 0.519 km. from mean, weighted H=19.1.
NEODyS14222084-208832.11e-10-7.22-7.550NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2010/02/15.467 to 2010/02/18.430."
2010 CN44JPL Sentry14222054-2096111.7e-07-3.98-4.180JPL: "Analysis based on 15 observations spanning 2.9937 days (2010-Feb-15.11003 to 2010-Feb-18.10369)." Diameter approximately 0.475 km. from mean, weighted H=19.3.
NEODyS14222059-207021.13e-07-4.21-4.380NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2010/02/15.111 to 2010/02/18.104."
2010 CS19JPL Sentry1422210443.7e-05-6.30-6.330JPL: "Analysis based on 40 observations spanning 3.1225 days (2010-Feb-15.32692 to 2010-Feb-18.449459)." Diameter approximately 0.008 km. from mean, weighted H=28.0.
NEODyS1422R E M O V E D-
2010 CQ19JPL Sentry1422210516.7e-08-8.40-8.400JPL: "Analysis based on 18 observations spanning 3.0147 days (2010-Feb-15.27907 to 2010-Feb-18.29375)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
2010 CG19NEODyS14222019-208442.39e-08-4.65-4.920NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010/02/14.284 to 2010/02/18.256."
2010 CR5JPL Sentry14222032-208762.7e-08-4.69-4.900JPL: "Analysis based on 35 observations spanning 9.8836 days (2010-Feb-09.3273 to 2010-Feb-19.21089)." Diameter approximately 0.369 km. from mean, weighted H=19.8.
NEODyS14222030-208772.6e-08-4.62-4.800NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2010/02/09.328 to 2010/02/19.212."
2010 CAJPL Sentry1422202218.5e-06-4.13-4.130JPL: "Analysis based on 59 observations spanning 8.9008 days (2010-Feb-05.19638 to 2010-Feb-14.097229)." Diameter approximately 0.043 km. from mean, weighted H=24.5.
NEODyS14222022-208228.74e-06-4.11-4.110NEODyS: "Based on 59 optical observations (of which 0 are rejected as outliers) from 2010/02/05.197 to 2010/02/14.098."
2001 WN5JPL Sentry1802213317.6e-05-1.30-1.30-JPL: "Analysis based on 121 observations spanning 5122.0 days (1996-Feb-10.39593 to 2010-Feb-18.441914)." Diameter approximately 0.780 km. from mean, weighted H=18.2.
NEODyS14222107-213321.04e-04-1.18-1.18-NEODyS: "Based on 125 optical observations (of which 7 are rejected as outliers) from 1996/02/10.397 to 2010/02/18.443."

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 19 February '10

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

2239Grabbed MPEC 2010-D52 - 2010 DW1 - see above
Grabbed MPEC 2010-D53 - 2010 DX1 - see above
Grabbed MPEC 2010-D54 - 2010 DY1 - see above
Grabbed MPEC 2010-D55 - 2010 DZ1 - see above
2102Noted that JPL Sentry has removed 2010 DJ1 as an impact risk - see above
2001Grabbed MPEC 2010-D51 - Comet P/2010 D1 (WISE) - see above
1901Grabbed MPEC 2010-D49 - 2010 DT1 - see above
Grabbed MPEC 2010-D50 - 2010 DU1 - see above
1802Noted that JPL Sentry has updated its 153814 2001 WN5 risk assessment - see above
1422Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CA risk assessment - see above
Noted that NEODyS has updated its 2010 CA risk assessment - see above
Noted that NEODyS has updated its 2010 CG19 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CH55 risk assessment - see above
Noted that NEODyS has updated its 2010 CH55 risk assessment - see above
Noted that JPL Sentry has posted 2010 CN44 as an impact risk - see above
Noted that NEODyS has updated its 2010 CN44 risk assessment - see above
Noted that JPL Sentry has reposted 2010 CQ19 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 CR5 risk assessment - see above
Noted that NEODyS has updated its 2010 CR5 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CS19 risk assessment - see above
Noted that NEODyS has removed 2010 CS19 as an impact risk - see above
Noted that NEODyS has posted 2010 DG1 as an impact risk - see above
Noted that JPL Sentry has removed 2010 DH1 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 DM risk assessment - see above
Noted that NEODyS has updated its 2010 DM risk assessment - see above
Noted that JPL Sentry has removed 2010 DP as an impact risk - see above
Noted that NEODyS has removed 2010 DP as an impact risk - see above
Grabbed MPEC 2010-D48 - Daily Orbit Update - see above
0651Grabbed MPEC 2010-D47 - 2010 DN1 - see above