Contents  on 15 April '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 15 April '10

The MPC's NEO Confirmation Page has 6 listings: 3 new, 3 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and three updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of twelve 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 15 April '10

Minor Planet Electronic Circulars

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


MPEC 2010-G122 - "23:12 UT" - 2010 FO92


MPEC 2010-G121 - "15:20 UT" - 2009 SW17


MPEC 2010-G120 - "14:40 UT" - 2010 GM65


MPEC 2010-G119 - "14:34 UT" - 2010 GL65


MPEC 2010-G118 - "14:30 UT" - 2010 GK65


MPEC 2010-G117 - "14:26 UT" - 2010 GJ65


MPEC 2010-G116 - "14:21 UT" - 2010 GH65


<< DOU on 15 Apr. '10 >>  MPEC 2010-G115 - "06:11 UT" - Daily Orbit Update

Observers  on 15 April '10

A total of 29 observing facilities appear in today's MPECs.

CodeObserver / observatory
J24Altamira Obs. in Spain, 1 in MPEC 2010-G115 -- 218863
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2010-G115 -- 2005 YU55
7056W. Bhatti via Apache Point Obs. in New Mexico, 1 in MPEC 2010-G115 -- 2010 GJ23
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 18 in MPECs 2010-G115, 2010-G116, 2010-G117, 2010-G118, 2010-G119 & 2010-G120 -- 2010 GZ33, 2010 GW62, 2010 GU6, 2010 GT7, 2010 GR33, 2010 GM65, 2010 GL65, 2010 GK65, 2010 GJ65, 2010 GH7, 2010 GH65, 2010 GF30, 2010 GE35, 2010 GB6, 2010 GA34, 2010 FL, 2010 CH18, 2005 YU55
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2010-G115, 2010-G118 & 2010-G122 -- 2010 GK65, 2010 FO92, 2010 CM44, 85628, 152889, 4947, 2368
C13Como Obs. in Italy, 1 in MPEC 2010-G115 -- 2005 YU55
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-G115 -- 2010 GT6, 2010 GL23, 2010 EV45, 2010 DE
J95Great Shefford Obs. in England, 4 in MPECs 2010-G115, 2010-G117, 2010-G118 & 2010-G122 -- 2010 GK65, 2010 GJ65, 2010 FO92, 2005 YU55
704LINEAR in New Mexico, 12 in MPECs 2010-G115 & 2010-G119 -- 2010 GU21, 2010 GS7, 2010 GL65, 2010 GA24, 2010 CN44, 2005 YU55, 1999 TA10, 88254, 68216, 52750, 162998, 11066
H01Magdalena Ridge Obs. (MRO) in New Mexico, 7 in MPECs 2010-G115, 2010-G116, 2010-G117, 2010-G118, 2010-G119, 2010-G120 & 2010-G122 -- 2010 GM65, 2010 GL65, 2010 GK65, 2010 GJ65, 2010 GH65, 2010 FO92, 2010 FD
213Montcabre Obs. in Spain, 1 in MPEC 2010-G115 -- 2005 YU55
474Mt. John Obs. in New Zealand, 1 in MPEC 2010-G118 -- 2010 GK65
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2010-G115, 2010-G117, 2010-G118, 2010-G120 & 2010-G122 -- 2010 GM65, 2010 GK65, 2010 GJ65, 2010 FO92, 2008 GG2, 2007 FD, 2000 AD205, 1996 GQ
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2010-G115 -- 2010 GU21, 2010 GA24, 2005 YU55
473Remanzacco Obs. in Italy, 1 in MPEC 2010-G122 -- 2010 FO92
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-G117, 2010-G118 & 2010-G119 -- 2010 GL65, 2010 GK65, 2010 GJ65
B04Saint-Barthelemy Obs. in Italy, 2 in MPECs 2010-G118 & 2010-G120 -- 2010 GM65, 2010 GK65
H36Sandlot Obs. in Kansas, 4 in MPECs 2010-G115, 2010-G117, 2010-G118 & 2010-G119 -- 2010 GL65, 2010 GK65, 2010 GJ65, 2005 YU55
204Schiaparelli Obs. in Italy, 5 in MPECs 2010-G115 & 2010-G117 -- 2010 GV23, 2010 GS7, 2010 GR7, 2010 GJ65, 2010 FF10
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-G116 -- 2010 GH65
J26Spaceguard Centre in Wales, 1 in MPEC 2010-G115 -- 3671
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2010-G115 & 2010-G122 -- 2010 GW62, 2010 FO92
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2010-G115 & 2010-G120 -- 2010 GZ5, 2010 GX62, 2010 GW23, 2010 GR33, 2010 GQ33, 2010 GM65, 2010 GE35, 2010 GE25, 2010 GD25, 2010 FC81, 2010 EX119, 2010 EK44, 2010 EJ43, 26760
926Tenagra II Obs. in Arizona, 12 in MPECs 2010-G115, 2010-G117, 2010-G118, 2010-G119, 2010-G120 & 2010-G121 -- 2010 GY23, 2010 GP33, 2010 GO33, 2010 GM65, 2010 GL65, 2010 GK65, 2010 GJ65, 2010 GJ30, 2010 GF30, 2010 GE35, 2010 GA34, 2009 SW17
H53Thompsonville Obs. in Illinois, 6 in MPEC 2010-G115 -- 2010 DB34, 2006 CX10, 54789, 218863, 3554, 1036
G72University Hills Obs. in southern California, 1 in MPEC 2010-G115 -- 2010 CM44
C51WISE in Earth polar orbit, 1 in MPEC 2010-G116 -- 2010 GH65
718Wiggins Obs. in Utah, 1 in MPEC 2010-G115 -- 2005 YU55
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2010-G115 -- 2010 GU21, 1998 WB2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 April '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 GX62JPL Sentry13522026-2103133.1e-07-4.30-4.760JPL: "Analysis based on 14 observations spanning 3.9010 days (2010-Apr-10.57631 to 2010-Apr-14.47734)." Diameter approximately 0.283 km. from mean, weighted H=20.4.
NEODyS13522043-208122.39e-08-5.02-5.090NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/04/10.577 to 2010/04/14.478."
2010 GE35NEODyS1352205717.22e-09-7.00-7.000NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2010/04/12.318 to 2010/04/14.388."
JPL Sentry1352R E M O V E DJPL: Risk listing removed at 1030 UTC.
2010 GV23JPL Sentry13522096-210521.3e-06-7.64-7.830JPL: "Analysis based on 57 observations spanning 4.1226 days (2010-Apr-09.21954 to 2010-Apr-13.34216)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2010 GH7JPL Sentry13522093-2110238.5e-05-5.71-6.210JPL: "Analysis based on 55 observations spanning 6.9483 days (2010-Apr-07.38604 to 2010-Apr-14.334368)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2010 FDJPL Sentry1352208515.6e-07-6.98-6.980JPL: "Analysis based on 36 observations spanning 29.073 days (2010-Mar-16.34477 to 2010-Apr-14.41727)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
NEODyS1352208515.34e-07-7.00-7.000NEODyS: "Based on 37 optical observations (of which 1 are rejected as outliers) from 2010/03/16.346 to 2010/04/14.418."
2005 YU55NEODyS23012055-2109903.82e-06-4.05-4.900NEODyS: "Based on 492 optical observations (of which 2 are rejected as outliers) from 2005/12/24.299 to 2010/04/14.947."
JPL Sentry13522066-2109152.0e-06-4.33-4.880JPL: "Analysis based on 491 observations spanning 1572.6 days (2005-Dec-24.29832 to 2010-Apr-14.94666)." Diameter approximately 0.140 km. from mean, weighted H=21.9.

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 15 April '10

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

2359Grabbed MPEC 2010-G122 - 2010 FO92 - see above
2301Noted that NEODyS has updated its 2005 YU55 risk assessment - see above
1701Grabbed MPEC 2010-G121 - 2009 SW17 - see above
1502Grabbed MPEC 2010-G116 - 2010 GH65 - see above
Grabbed MPEC 2010-G117 - 2010 GJ65 - see above
Grabbed MPEC 2010-G118 - 2010 GK65 - see above
Grabbed MPEC 2010-G119 - 2010 GL65 - see above
Grabbed MPEC 2010-G120 - 2010 GM65 - see above
1352Noted that JPL Sentry has updated its 2005 YU55 risk assessment - see above
Noted that JPL Sentry has updated its 2010 FD risk assessment - see above
Noted that NEODyS has updated its 2010 FD risk assessment - see above
Noted that JPL Sentry has removed 2010 GE35 as an impact risk - see above
Noted that NEODyS has posted 2010 GE35 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 GH7 risk assessment - see above
Noted that JPL Sentry has updated its 2010 GV23 risk assessment - see above
Noted that JPL Sentry has updated its 2010 GX62 risk assessment - see above
Noted that NEODyS has posted 2010 GX62 as an impact risk - see above
Grabbed MPEC 2010-G115 - Daily Orbit Update - see above