Contents  on 17 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.

Radar Astrometry  on 17 February '10

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2231 UTC when the database was dated 17 Feb.

NEOCP Activity  on 17 February '10

The MPC's NEO Confirmation Page has 13 listings: 5 new, 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and eight updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of 40 listings on the NEOCP at some point today.

New MPECs  on 17 February '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-D38 - "21:17 UT" - 2010 DP


MPEC 2010-D37 - "21:14 UT" - 2010 DO


MPEC 2010-D36 - "21:11 UT" - 2010 DC


MPEC 2010-D35 - "20:33 UT" - 2010 DN


MPEC 2010-D34 - "20:29 UT" - 2010 DM


MPEC 2010-D33 - "20:27 UT" - 2010 DL


MPEC 2010-D32 - "20:25 UT" - 2010 DK


MPEC 2010-D31 - "20:20 UT" - 2010 DJ


MPEC 2010-D30 - "20:17 UT" - 2010 DH


MPEC 2010-D29 - "20:15 UT" - 2010 DG


MPEC 2010-D28 - "20:12 UT" - 2010 DF


MPEC 2010-D27 - "20:09 UT" - 2010 CH55


MPEC 2010-D26 - "20:07 UT" - 2010 CG55


MPEC 2010-D25 - "20:04 UT" - 2010 CF55


MPEC 2010-D24 - "20:02 UT" - 2010 CE55


MPEC 2010-D23 - "19:59 UT" - 2010 CD55


MPEC 2010-D22 - "19:56 UT" - 2010 CC55


MPEC 2010-D21 - "19:54 UT" - 2010 CB55


MPEC 2010-D20 - "19:49 UT" - 2010 CA55


MPEC 2010-D19 - "19:45 UT" - 2009 NJ


MPEC 2010-D18 - "19:32 UT" - 2007 LQ19


<< DOU on 17 Feb. '10 >>  MPEC 2010-D17 - "07:22 UT" - Daily Orbit Update

Observers  on 17 February '10

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 3 in MPECs 2010-D21, 2010-D28 & 2010-D29 -- 2010 DG, 2010 DF, 2010 CB55
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2010-D17, 2010-D21, 2010-D26, 2010-D36 & 2010-D37 -- 2010 DO, 2010 DC, 2010 CJ18, 2010 CG55, 2010 CB55, 2009 SX1, 2006 UR, 2006 EE1, 152941
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-D17 -- 2009 UN3
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2009 UN3
682Kanab Obs. in Utah, 2 in MPECs 2010-D17 & 2010-D26 -- 2010 CM44, 2010 CG55
704LINEAR in New Mexico, 19 in MPECs 2010-D17 & 2010-D23 -- 2010 CN19, 2010 CD55, 2010 CD19, 2006 AO4, 2003 CH11, 2003 BT47, 2002 LV, 2002 AJ129, 2001 PT9, 96590, 85990, 68359, 172722, 11398, 10165, 8201, 5693, 3671, 1627
H01Magdalena Ridge Obs. (MRO) in New Mexico, 7 in MPECs 2010-D21, 2010-D22, 2010-D24, 2010-D26, 2010-D27, 2010-D30 & 2010-D38 -- 2010 DP, 2010 DH, 2010 CH55, 2010 CG55, 2010 CE55, 2010 CC55, 2010 CB55
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-D18 -- 2007 LQ19
G96Mt. Lemmon Survey (MLS) in Arizona, 27 in MPECs 2010-D17, 2010-D21, 2010-D24, 2010-D25, 2010-D26, 2010-D27, 2010-D28, 2010-D29, 2010-D30, 2010-D31, 2010-D32, 2010-D33, 2010-D34, 2010-D35, 2010-D36 & 2010-D38 -- 2010 DP, 2010 DN, 2010 DM, 2010 DL, 2010 DK, 2010 DJ, 2010 DH, 2010 DG, 2010 DF, 2010 DC, 2010 CS19, 2010 CO19, 2010 CM19, 2010 CL19, 2010 CJ1, 2010 CH55, 2010 CG55, 2010 CF55, 2010 CE55, 2010 CB55, 2006 AO4, 1999 VO11, 173664, 172718, 154656, 8201, 2062
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2010-D17 -- 1996 BA1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2010-D17 -- 2010 BB3, 2009 UN3, 2008 EE, 2003 CH11, 2003 BT47, 2001 PT9, 2000 CO101
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-D21 -- 2010 CB55
473Remanzacco Obs. in Italy, 1 in MPEC 2010-D26 -- 2010 CG55
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-D21 & 2010-D23 -- 2010 CD55, 2010 CB55
H36Sandlot Obs. in Kansas, 4 in MPECs 2010-D21, 2010-D26, 2010-D29 & 2010-D37 -- 2010 DO, 2010 DG, 2010 CG55, 2010 CB55
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2010-D17 -- 2006 PA1, 2005 ED318, 2002 PG43, 2001 RZ11, 144861, 10145
291Spacewatch 1.8m telescope in Arizona, 18 in MPECs 2010-D17, 2010-D22, 2010-D24, 2010-D26, 2010-D27 & 2010-D34 -- 2010 DM, 2010 CS19, 2010 CR5, 2010 CQ19, 2010 CO44, 2010 CM, 2010 CK19, 2010 CJ19, 2010 CH55, 2010 CG55, 2010 CF19, 2010 CE55, 2010 CD19, 2010 CC55, 2010 AJ, 2006 GU, 2006 EF71, 2001 JW1
926Tenagra II Obs. in Arizona, 7 in MPECs 2010-D19, 2010-D21, 2010-D26, 2010-D28, 2010-D29, 2010-D37 & 2010-D38 -- 2010 DP, 2010 DO, 2010 DG, 2010 DF, 2010 CG55, 2010 CB55, 2009 NJ
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2010-D17 -- 11066
C51WISE in Earth polar orbit, 4 in MPECs 2010-D17, 2010-D20 & 2010-D22 -- 2010 CC55, 2010 CA55, 2009 SP, 2007 BG29
G56Walnut Creek Obs. in northern California, 3 in MPEC 2010-D17 -- 2002 XY38, 2002 AJ129, 162038
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 February '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 DPJPL Sentry2358202011.1e-10-6.13-6.130JPL: "Analysis based on 11 observations spanning .99417 days (2010-Feb-16.52093 to 2010-Feb-17.5151)." Diameter approximately 0.570 km. from mean, weighted H=18.9.
2010 DMJPL Sentry23582015-2110291.3e-08-4.87-5.650JPL: "Analysis based on 13 observations spanning 1.1279 days (2010-Feb-16.32523 to 2010-Feb-17.45315)." Diameter approximately 0.379 km. from mean, weighted H=19.8.
2010 DJJPL Sentry23582018-21083491.6e-05-5.49-5.790JPL: "Analysis based on 13 observations spanning 1.1058 days (2010-Feb-16.28522 to 2010-Feb-17.39107)." Diameter approximately 0.017 km. from mean, weighted H=26.6.
2010 DANEODyS14222016-2080171.64e-06-2.72-3.010NEODyS: "Based on 21 optical observations (of which 1 are rejected as outliers) from 2010/02/16.545 to 2010/02/16.934."
JPL Sentry02352016-2109534.1e-06-2.25-2.390JPL: "Analysis based on 21 observations spanning .38885 days (2010-Feb-16.54441 to 2010-Feb-16.93326)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2010 CH55JPL Sentry22312016-21091302.4e-07-3.82-4.950JPL: "Analysis based on 23 observations spanning 2.0166 days (2010-Feb-15.466 to 2010-Feb-17.4826)." Diameter approximately 0.498 km. from mean, weighted H=19.2.
2010 CO44JPL Sentry2231R E M O V E DJPL: Risk listing removed at 2135 UTC.
NEODyS2012R E M O V E DNEODyS #2 for the day, following a risk posting noted at 1422 UTC.
2010 CN44NEODyS16292021-203133.69e-08-4.51-4.770NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2010/02/15.111 to 2010/02/16.142."
2010 CS19JPL Sentry21022092-210452.1e-05-6.52-6.610JPL: "Analysis based on 23 observations spanning 1.1643 days (2010-Feb-15.32692 to 2010-Feb-16.49119)." Diameter approximately 0.009 km. from mean, weighted H=28.0.
NEODyS2012208818.07e-09-9.86-9.860NEODyS: "Based on 24 optical observations (of which 1 are rejected as outliers) from 2010/02/15.328 to 2010/02/16.492."
2010 CQ19JPL Sentry21022023-210768.5e-08-8.23-8.530JPL: "Analysis based on 16 observations spanning 1.0879 days (2010-Feb-15.27907 to 2010-Feb-16.36695)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
NEODyS2012207014.54e-08-8.47-8.470NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2010/02/15.280 to 2010/02/16.368."
2010 CK19JPL Sentry21022089-210751.6e-06-7.60-8.090JPL: "Analysis based on 30 observations spanning 2.1365 days (2010-Feb-14.33293 to 2010-Feb-16.46946)." Diameter approximately 0.009 km. from mean, weighted H=27.9.
NEODyS2102208926.84e-07-7.95-8.140NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2010/02/14.334 to 2010/02/16.470."
2010 CF19JPL Sentry2144R E M O V E DJPL: Risk listing removed at 2131 UTC.
NEODyS2012R E M O V E D-
2010 CD19JPL Sentry2102R E M O V E DJPL: Risk listing removed at 2050 UTC.
2010 CR5JPL Sentry21022019-2107171.3e-07-4.01-4.520JPL: "Analysis based on 30 observations spanning 7.9126 days (2010-Feb-09.3273 to 2010-Feb-17.23993)." Diameter approximately 0.383 km. from mean, weighted H=19.7.
NEODyS20122019-2087179.97e-08-4.06-4.570NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2010/02/09.328 to 2010/02/17.241."

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 17 February '10

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

2358Noted that JPL Sentry has posted 2010 DJ as an impact risk - see above
Noted that JPL Sentry has posted 2010 DM as an impact risk - see above
Noted that JPL Sentry has posted 2010 DP as an impact risk - see above
2231Noted that JPL Sentry has posted 2010 CH55 as an impact risk - see above
Noted that JPL Sentry has removed 2010 CO44 as an impact risk - see above
Noted Radar Astrometry database update - see above
2144Noted that JPL Sentry has removed 2010 CF19 as an impact risk - see above
Grabbed MPEC 2010-D36 - 2010 DC - see above
Grabbed MPEC 2010-D37 - 2010 DO - see above
Grabbed MPEC 2010-D38 - 2010 DP - see above
2102Noted that JPL Sentry has removed 2010 CD19 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 CK19 risk assessment - see above
Noted that NEODyS has updated its 2010 CK19 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CQ19 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CR5 risk assessment - see above
Noted that JPL Sentry has updated its 2010 CS19 risk assessment - see above
Grabbed MPEC 2010-D28 - 2010 DF - see above
Grabbed MPEC 2010-D29 - 2010 DG - see above
Grabbed MPEC 2010-D30 - 2010 DH - see above
Grabbed MPEC 2010-D31 - 2010 DJ - see above
Grabbed MPEC 2010-D32 - 2010 DK - see above
Grabbed MPEC 2010-D33 - 2010 DL - see above
Grabbed MPEC 2010-D34 - 2010 DM - see above
Grabbed MPEC 2010-D35 - 2010 DN - see above
2012Noted that NEODyS has removed 2010 CF19 as an impact risk - see above
Noted that NEODyS has removed 2010 CO44 as an impact risk - see above
Noted that NEODyS has updated its 2010 CQ19 risk assessment - see above
Noted that NEODyS has updated its 2010 CR5 risk assessment - see above
Noted that NEODyS has updated its 2010 CS19 risk assessment - see above
Grabbed MPEC 2010-D18 - 2007 LQ19 - see above
Grabbed MPEC 2010-D19 - 2009 NJ - see above
Grabbed MPEC 2010-D20 - 2010 CA55 - see above
Grabbed MPEC 2010-D21 - 2010 CB55 - see above
Grabbed MPEC 2010-D22 - 2010 CC55 - see above
Grabbed MPEC 2010-D23 - 2010 CD55 - see above
Grabbed MPEC 2010-D24 - 2010 CE55 - see above
Grabbed MPEC 2010-D25 - 2010 CF55 - see above
Grabbed MPEC 2010-D26 - 2010 CG55 - see above
Grabbed MPEC 2010-D27 - 2010 CH55 - see above
1900Grabbed MPEC 2010-D17 - Daily Orbit Update - see above
1629Noted that NEODyS has posted 2010 CN44 as an impact risk - see above
1422Noted that NEODyS has posted 2010 CO44 as an impact risk - see above
Noted that NEODyS has posted 2010 DA as an impact risk - see above
0235Noted that JPL Sentry has posted 2010 DA as an impact risk - see above