Contents  on 10 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 10 April '10

The MPC's NEO Confirmation Page has 11 listings: 3 new, 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and eight updated listings. Of these, nine were "one nighters." So far The Tracking News has counted a total of 22 listings on the NEOCP at some point today.

New MPECs  on 10 April '10

Minor Planet Electronic Circulars

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


MPEC 2010-G80 - "22:17 UT" - 2010 GF25


MPEC 2010-G79 - "22:01 UT" - 2010 GE25


MPEC 2010-G78 - "21:07 UT" - 2010 GD25


MPEC 2010-G77 - "20:18 UT" - 2010 GA24


MPEC 2010-G76 - "18:14 UT" - 2010 GY23


MPEC 2010-G75 - "17:41 UT" - 2010 GX23


MPEC 2010-G74 - "17:07 UT" - 2010 GW23


MPEC 2010-G73 - "16:34 UT" - 2010 GV23


<< DOU on 10 Apr. '10 >>  MPEC 2010-G72 - "06:09 UT" - Daily Orbit Update

Observers  on 10 April '10

A total of 39 observing facilities appear in today's MPECs.

CodeObserver / observatory
7056W. Bhatti via Apache Point Obs. in New Mexico, 2 in MPECs 2010-G72 & 2010-G79 -- 2010 GK23, 2010 GE25
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 18 in MPECs 2010-G72, 2010-G73, 2010-G74, 2010-G75, 2010-G77, 2010-G78 & 2010-G79 -- 2010 GX23, 2010 GW23, 2010 GV23, 2010 GT7, 2010 GS7, 2010 GH7, 2010 GE25, 2010 GD25, 2010 GA6, 2010 GA24, 2010 FV9, 2010 EK43, 2010 BZ4, 2010 AL, 2004 XL35, 2003 BQ35, 1998 WB2, 152664
I99Blanquita Obs. in Spain, 2 in MPEC 2010-G72 -- 2010 CM44, 2005 YU55
B09Capannoli Obs. in Italy, 3 in MPEC 2010-G72 -- 2005 YU55, 2003 UL12, 3671
160Castelmartini Obs. in Italy, 2 in MPEC 2010-G72 -- 86067, 54789
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2010-G72, 2010-G75 & 2010-G77 -- 2010 GX23, 2010 GH7, 2010 GA7, 2010 GA24, 2003 HS42, 1999 HW1, 1998 WB2, 218863, 12923, 5370
448Desert Moon Obs. in New Mexico, 7 in MPEC 2010-G72 -- 2010 GZ6, 2010 GU6, 2010 EV45, 2010 EF21, 2010 EE43, 2007 DB56, 2004 EU9
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 5 in MPEC 2010-G72 -- 2010 GZ6, 2010 GU6, 2010 GU5, 2010 GT6, 1998 WB2
B23Fiamene Obs. in Italy, 8 in MPEC 2010-G72 -- 2010 GA7, 2010 FP, 1998 WB2, 27346, 220124, 218863, 175706, 162998
651Grasslands Obs. in Arizona, 1 in MPEC 2010-G78 -- 2010 GD25
J95Great Shefford Obs. in England, 3 in MPECs 2010-G73, 2010-G74 & 2010-G78 -- 2010 GW23, 2010 GV23, 2010 GD25
A17Guidestar Obs. in Germany, 4 in MPECs 2010-G72 & 2010-G75 -- 2010 GX23, 2010 GU5, 2010 GS7, 2010 GB6
240Herrenberg Obs. in Germany, 3 in MPEC 2010-G72 -- 2010 FR, 232382, 3671
750Hobbs Obs. in Wisconsin, 1 in MPEC 2010-G72 -- 2005 YU55
G92Jarnac Obs. in Arizona, 1 in MPEC 2010-G72 -- 1999 TA10
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2010-G72 -- 2010 BC3, 2005 YU55
704LINEAR in New Mexico, 8 in MPECs 2010-G72 & 2010-G77 -- 2010 GM23, 2010 GA24, 2010 DB34, 2003 UL12, 218863, 141432, 12923, 887
J87La Canada Obs. in Spain, 1 in MPEC 2010-G72 -- 2010 EK44
J59Linceo Obs. in Spain, 2 in MPEC 2010-G72 -- 2005 YU55, 1036
H01Magdalena Ridge Obs. (MRO) in New Mexico, 11 in MPECs 2010-G72, 2010-G73, 2010-G74, 2010-G75, 2010-G76, 2010-G77, 2010-G78, 2010-G79 & 2010-G80 -- 2010 GY23, 2010 GX23, 2010 GW23, 2010 GV23, 2010 GH7, 2010 GF25, 2010 GE25, 2010 GD6, 2010 GD25, 2010 GA24, 2010 FE7
711McDonald Obs. in Texas, 1 in MPEC 2010-G77 -- 2010 GA24
213Montcabre Obs. in Spain, 3 in MPECs 2010-G72 & 2010-G75 -- 2010 GX23, 2010 CC180, 1998 WB2
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2010-G72, 2010-G73, 2010-G76 & 2010-G78 -- 2010 GY23, 2010 GV23, 2010 GD25, 163732, 2061
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2010-G72 -- 2010 GU6, 2010 CN44, 2009 UV18, 2005 YU55
941Pla D'Arguines Obs. in Spain, 1 in MPEC 2010-G72 -- 2001 HC
D29Purple Mtn. Obs. Xuyi Station (Xuyi Sta.) in China, 2 in MPEC 2010-G72 -- 2010 GA6, 12923
473Remanzacco Obs. in Italy, 2 in MPECs 2010-G73 & 2010-G75 -- 2010 GX23, 2010 GV23
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-G75 -- 2010 GX23
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-G73 & 2010-G75 -- 2010 GX23, 2010 GV23
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2010-G75 -- 2010 GX23
H36Sandlot Obs. in Kansas, 4 in MPECs 2010-G73, 2010-G74, 2010-G75 & 2010-G78 -- 2010 GX23, 2010 GW23, 2010 GV23, 2010 GD25
204Schiaparelli Obs. in Italy, 1 in MPEC 2010-G75 -- 2010 GX23
587Sormano Obs. in Italy, 6 in MPECs 2010-G72, 2010-G73 & 2010-G75 -- 2010 GX23, 2010 GV23, 2010 GU21, 2010 GA7, 2005 YU55, 153814
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-G74 -- 2010 GW23
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2010-G72, 2010-G73, 2010-G74, 2010-G76, 2010-G79 & 2010-G80 -- 2010 GY23, 2010 GW23, 2010 GV23, 2010 GT7, 2010 GS7, 2010 GH7, 2010 GF25, 2010 GE25, 2010 FY80, 2010 FC81, 2010 FB6, 2010 EQ43, 2010 EF44, 2010 CM, 2005 BG14
I19Tanti Obs. in Argentina, 3 in MPEC 2010-G72 -- 2010 CV180, 2010 CC180, 2008 EE
926Tenagra II Obs. in Arizona, 18 in MPECs 2010-G72, 2010-G73, 2010-G74, 2010-G75, 2010-G76, 2010-G78 & 2010-G79 -- 2010 GZ6, 2010 GZ5, 2010 GY23, 2010 GX23, 2010 GW23, 2010 GV23, 2010 GU6, 2010 GU5, 2010 GT7, 2010 GS7, 2010 GH7, 2010 GG7, 2010 GF7, 2010 GE25, 2010 GD25, 2010 GC6, 2010 GB6, 2010 GA6
C51WISE in Earth polar orbit, 14 in MPECs 2010-G72, 2010-G79 & 2010-G80 -- 2010 GF25, 2010 GE25, 2010 DM56, 2010 CN44, 2010 CH18, 2007 MK13, 2007 HX4, 2006 OU10, 2003 QH5, 2002 WZ2, 1999 XX262, 66251, 162903, 142464
J08Zonalunar Obs. in Spain, 1 in MPEC 2010-G72 -- 2005 YU55
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 April '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. 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 GV23JPL Sentry19082092-210543.5e-06-7.19-7.380JPL: "Analysis based on 39 observations spanning 1.0318 days (2010-Apr-09.21954 to 2010-Apr-10.2513)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2010 GM23NEODyS15112086-208735.8e-07-6.26-6.370NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2010/04/08.312 to 2010/04/09.343."
JPL Sentry15052086-2109242.7e-05-4.68-5.160JPL #2 for the day: "Analysis based on 40 observations spanning 1.0310 days (2010-Apr-08.31133 to 2010-Apr-09.34233)." Diameter approximately 0.037 km. from mean, weighted H=24.8.
2010 GK23NEODyS17082058-208955.37e-09-5.58-5.890NEODyS: "Based on 27 optical observations (of which 1 are rejected as outliers) from 2010/04/04.075 to 2010/04/09.356."
JPL Sentry15052071-208936.6e-09-5.53-5.610JPL #2 for the day: "Analysis based on 27 observations spanning 5.2809 days (2010-Apr-04.07456 to 2010-Apr-09.35543)." Diameter approximately 0.363 km. from mean, weighted H=19.8.
2010 GT7JPL Sentry15052096-210434.1e-09-6.26-6.350JPL: "Analysis based on 53 observations spanning 1.9841 days (2010-Apr-07.44183 to 2010-Apr-09.425882)." Diameter approximately 0.290 km. from mean, weighted H=20.4.
NEODyS1505R E M O V E D-
2010 GH7JPL Sentry15052093-2110221.0e-04-5.61-6.050JPL: "Analysis based on 33 observations spanning 2.0406 days (2010-Apr-07.38604 to 2010-Apr-09.42666)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2010 FF10NEODyS1505208313.73e-10-7.92-7.920NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2010/03/20.310 to 2010/04/09.476."
JPL Sentry0031208313.5e-10-7.89-7.890JPL: "Analysis based on 32 observations spanning 20.166 days (2010-Mar-20.30918 to 2010-Apr-09.47525)." Diameter approximately 0.160 km. from mean, weighted H=21.6.
2005 YU55NEODyS23582062-2109571.05e-05-3.62-4.230NEODyS #2 for the day: "Based on 306 optical observations (of which 2 are rejected as outliers) from 2005/12/24.299 to 2010/04/09.981."
JPL Sentry00312071-2109267.4e-06-3.80-4.460JPL: "Analysis based on 276 observations spanning 1566.7 days (2005-Dec-24.29832 to 2010-Apr-08.9926)." Diameter approximately 0.140 km. from mean, weighted H=21.9.
153814 2001 WN5NEODyS15112099-213376.76e-08-4.36-4.470NEODyS: "Based on 145 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/04/09.976."
JPL Sentry0031213313.3e-08-4.67-4.67-JPL: "Analysis based on 138 observations spanning 5171.0 days (1996-Feb-10.39593 to 2010-Apr-08.36797)." 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 10 April '10

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

2358Noted that NEODyS has updated its 2005 YU55 risk assessment - see above
Grabbed MPEC 2010-G77 - 2010 GA24 - see above
Grabbed MPEC 2010-G78 - 2010 GD25 - see above
Grabbed MPEC 2010-G79 - 2010 GE25 - see above
Grabbed MPEC 2010-G80 - 2010 GF25 - see above
1908Noted that JPL Sentry has posted 2010 GV23 as an impact risk - see above
Grabbed MPEC 2010-G76 - 2010 GY23 - see above
1812Grabbed MPEC 2010-G74 - 2010 GW23 - see above
Grabbed MPEC 2010-G75 - 2010 GX23 - see above
1708Noted that NEODyS has posted 2010 GK23 as an impact risk - see above
Grabbed MPEC 2010-G73 - 2010 GV23 - see above
1512Grabbed MPEC 2010-G72 - Daily Orbit Update - see above
1511Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
1505Noted that NEODyS has posted 2010 FF10 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 GK23 risk assessment - see above
Noted that JPL Sentry has updated its 2010 GM23 risk assessment - see above
Noted that NEODyS has posted 2010 GM23 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 GT7 risk assessment - see above
Noted that NEODyS has removed 2010 GT7 as an impact risk - see above
0031Noted 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
Noted that NEODyS has updated its 2005 YU55 risk assessment - see above
Noted that JPL Sentry has posted 2010 FF10 as an impact risk - see above
Noted that JPL Sentry has posted 2010 GK23 as an impact risk - see above
Noted that JPL Sentry has posted 2010 GM23 as an impact risk - see above