Contents  on 6 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 6 April '10

The MPC's NEO Confirmation Page has 15 listings: 1 new, 14 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and fourteen updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of eighteen 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 6 April '10

Minor Planet Electronic Circulars

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


MPEC 2010-G32 - "22:38 UT" - 2008 GJ110


MPEC 2010-G31 - "22:31 UT" - 2008 SQ


MPEC 2010-G30 - "15:18 UT" - 2010 GU6


MPEC 2010-G29 - "15:14 UT" - 2010 GT6


<< DOU on 6 Apr. '10 >>  MPEC 2010-G28 - "06:08 UT" - Daily Orbit Update


MPEC 2010-G27 - "03:51 UT" - Comet C/2010 G1 (Boattini)

Observers  on 6 April '10

A total of 37 observing facilities appear in today's MPECs.

CodeObserver / observatory
J24Altamira Obs. in Spain, 1 in MPEC 2010-G28 -- 2010 CL18
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 10 in MPECs 2010-G28, 2010-G29 & 2010-G30 -- 2010 GU6, 2010 GT6, 2010 FX9, 2010 EZ45, 2010 DB34, 2010 CM44, 2010 CL18, 2010 CC180, 2010 BB3, 2008 EE
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-G28 -- 2005 YU55, 1036
I99Blanquita Obs. in Spain, 3 in MPEC 2010-G28 -- 2005 YU55, 85839, 3554
235CAST Obs. in Italy, 1 in MPEC 2010-G27 -- C/2010 G1
B09Capannoli Obs. in Italy, 2 in MPEC 2010-G28 -- 2005 YU55, 12923
160Castelmartini Obs. in Italy, 2 in MPEC 2010-G28 -- 218863, 162998
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2010-G27, 2010-G28 & 2010-G30 -- 2010 GU6, C/2010 G1, 2010 CC180, 2009 UD2, 234061, 16064, 4947, 2368, 433
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2010-G28 -- 2005 YU55
C13Como Obs., 2 in MPEC 2010-G28 -- 2010 CC180, 2005 YU55
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-G28 -- 2010 EV45, 2010 EK44, 2010 DP, 162882
639Dresden Obs. in Germany, 1 in MPEC 2010-G28 -- 2010 DB34
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2010-G27 -- C/2010 G1
651Grasslands Obs. in Arizona, 1 in MPEC 2010-G29 -- 2010 GT6
J95Great Shefford Obs. in England, 1 in MPEC 2010-G27 -- C/2010 G1
240Herrenberg Obs. in Germany, 1 in MPEC 2010-G28 -- 2006 CX10
G92Jarnac Obs. in Arizona, 1 in MPEC 2010-G28 -- 2010 CM44
704LINEAR in New Mexico, 1 in MPEC 2010-G28 -- 220124
J75La Sagra Obs. in Spain, 2 in MPEC 2010-G28 -- 153814, 1917
H13Lenomiya Obs. in Arizona, 1 in MPEC 2010-G28 -- 2010 FQ
B82Maidbronn Obs. in Germany, 1 in MPEC 2010-G27 -- C/2010 G1
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2010-G28 -- 2005 ED318, 11066
A99Monte Baldo Obs. in Italy, 1 in MPEC 2010-G27 -- C/2010 G1
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-G27, 2010-G28 & 2010-G30 -- 2010 GU6, C/2010 G1, 8567
J47Nazaret Obs. in Spain, 1 in MPEC 2010-G27 -- C/2010 G1
A53Peschiera del Garda Obs. in Italy, 5 in MPEC 2010-G28 -- 2010 DB34, 2010 CM44, 2000 CO101, 88254, 218863
J53Posadas Obs. in Spain, 1 in MPEC 2010-G28 -- 218863
473Remanzacco Obs. in Italy, 2 in MPECs 2010-G29 & 2010-G30 -- 2010 GU6, 2010 GT6
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-G27 -- C/2010 G1
204Schiaparelli Obs. in Italy, 3 in MPECs 2010-G27, 2010-G29 & 2010-G30 -- 2010 GU6, 2010 GT6, C/2010 G1
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-G29 -- 2010 GT6
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2010-G29 & 2010-G30 -- 2010 GU6, 2010 GT6
926Tenagra II Obs. in Arizona, 4 in MPECs 2010-G29, 2010-G30, 2010-G31 & 2010-G32 -- 2010 GU6, 2010 GT6, 2008 SQ, 2008 GJ110
A48Verona Obs. in Italy, 2 in MPEC 2010-G28 -- 2010 FQ, 2010 CH18
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2010-G28 -- 2000 CO101, 85839
C51WISE in Earth polar orbit, 5 in MPEC 2010-G28 -- 163243, 163132, 153249, 142464, 7822
J08Zonalunar Obs. in Spain, 1 in MPEC 2010-G28 -- 220124
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 GD6NEODyS13232028-2078143.88e-09-6.98-7.730NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2010/04/05.259 to 2010/04/05.330."
2010 GB6NEODyS13232019-209051.12e-10-7.21-7.300NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2010/04/05.169 to 2010/04/05.311."
2010 GA6NEODyS13232023-208361.27e-06-6.10-6.240NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2010/04/05.166 to 2010/04/05.306."
2005 YU55JPL Sentry18002043-2109363.5e-04-2.12-2.331JPL: "Analysis based on 147 observations spanning 1563.7 days (2005-Dec-24.29832 to 2010-Apr-06.03428)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
NEODyS13232043-2109982.42e-04-2.30-2.661NEODyS: "Based on 133 optical observations (of which 1 are rejected as outliers) from 2005/12/24.299 to 2010/04/04.615. NOTE: The Virtual Impactors in 2103/11/10.386 and 2103/11/10.491 ... are rated as Torino Scale 1."
153814 2001 WN5JPL Sentry1800213316.8e-07-3.34-3.34-JPL: "Analysis based on 130 observations spanning 5167.6 days (1996-Feb-10.39593 to 2010-Apr-05.00513)." Diameter approximately 0.780 km. from mean, weighted H=18.2.
NEODyS15352106-213345.0e-06-2.49-2.510NEODyS: "Based on 134 optical observations (of which 7 are rejected as outliers) from 1996/02/10.397 to 2010/04/05.006."

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 6 April '10

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

2308Grabbed MPEC 2010-G31 - 2008 SQ - see above
Grabbed MPEC 2010-G32 - 2008 GJ110 - see above
1800Noted 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
1535Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
Grabbed MPEC 2010-G29 - 2010 GT6 - see above
Grabbed MPEC 2010-G30 - 2010 GU6 - see above
1323Noted that NEODyS has updated its 2005 YU55 risk assessment - see above
Noted that NEODyS has posted 2010 GA6 as an impact risk - see above
Noted that NEODyS has posted 2010 GB6 as an impact risk - see above
Noted that NEODyS has posted 2010 GD6 as an impact risk - see above
Grabbed MPEC 2010-G28 - Daily Orbit Update - see above
0450Grabbed MPEC 2010-G27 - Comet C/2010 G1 (Boattini) - see above