Contents  on 13 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 13 April '10

The MPC's NEO Confirmation Page has 8 listings: 7 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven new and one updated listings. Of these, two 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 13 April '10

Minor Planet Electronic Circulars

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


MPEC 2010-G105 - "20:09 UT" - Comet P/2009 WX51 (Catalina)


MPEC 2010-G104 - "18:50 UT" - Comet C/2010 G2 (Hill)


MPEC 2010-G103 - "18:07 UT" - Comet C/2010 G1 (Boattini)


MPEC 2010-G102 - "13:03 UT" - 2010 GE35


MPEC 2010-G101 - "12:59 UT" - 2010 FH92


MPEC 2010-G100 - "12:17 UT" - 2010 GD35


MPEC 2010-G99 - "12:15 UT" - 2010 GC35


<< DOU on 13 Apr. '10 >>  MPEC 2010-G98 - "06:09 UT" - Daily Orbit Update

Observers  on 13 April '10

A total of 42 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 1 in MPEC 2010-G103 -- C/2010 G1
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 25 in MPECs 2010-G98, 2010-G99, 2010-G100 & 2010-G102 -- 2010 GZ6, 2010 GX23, 2010 GV23, 2010 GU6, 2010 GU21, 2010 GT7, 2010 GS7, 2010 GR7, 2010 GH7, 2010 GH30, 2010 GE35, 2010 GD35, 2010 GC6, 2010 GC35, 2010 GB6, 2010 GA24, 2010 FL, 2010 DJ56, 2010 CL18, 2010 BH2, 2009 KD5, 2005 YU55, 2002 NP1, 2002 CE26, 1998 WB2
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2010-G98 -- 2005 YU55
467Auckland Obs. in New Zealand, 1 in MPEC 2010-G101 -- 2010 FH92
I99Blanquita Obs. in Spain, 1 in MPEC 2010-G103 -- C/2010 G1
215Buchloe Obs. in Germany, 1 in MPEC 2010-G103 -- C/2010 G1
235CAST Obs. in Italy, 1 in MPEC 2010-G103 -- C/2010 G1
703Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2010-G98 & 2010-G102 -- 2010 GE35, 2010 FQ, 2000 CO101, 54789, 24761, 164207
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2010-G104 -- C/2010 G2
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-G102 -- 2010 GE35
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-G98 -- 2010 GY6, 2010 GU6, 2010 FA81
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-G98 -- 2010 GT7
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2010-G98 -- 4179
F654Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2010-G102 -- 2010 GE35
J95Great Shefford Obs. in England, 2 in MPECs 2010-G98 & 2010-G100 -- 2010 GD35, 2005 YU55
750Hobbs Obs. in Wisconsin, 1 in MPEC 2010-G98 -- 2005 YU55
I96Hyperion Obs., 1 in MPEC 2010-G98 -- 2010 GA24
046Klet Obs. in the Czech Republic, 1 in MPEC 2010-G103 -- C/2010 G1
704LINEAR in New Mexico, 11 in MPECs 2010-G98, 2010-G102 & 2010-G104 -- 2010 GE35, C/2010 G2, 2010 FF10, 2002 NP1, 1998 KN3, 88254, 162998, 141531, 138155, 138013, 1980
J38La Vara Obs. in Spain, 1 in MPEC 2010-G103 -- C/2010 G1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2010-G98, 2010-G99 & 2010-G100 -- 2010 GK23, 2010 GH7, 2010 GD35, 2010 GC35
568Mauna Kea in Hawaii, 1 in MPEC 2010-G103 -- C/2010 G1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-G98 -- 2010 EW45
213Montcabre Obs. in Spain, 1 in MPEC 2010-G103 -- C/2010 G1
900Moriyama Obs. in Japan, 1 in MPEC 2010-G103 -- C/2010 G1
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-G98, 2010-G99 & 2010-G100 -- 2010 GF30, 2010 GD35, 2010 GC35
B69Owls & Ravens Obs. in Germany, 1 in MPEC 2010-G103 -- C/2010 G1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPECs 2010-G98, 2010-G103 & 2010-G104 -- C/2010 G2, C/2010 G1, 2005 YU55, 1998 WB2
J53Posadas Obs. in Spain, 1 in MPEC 2010-G103 -- C/2010 G1
H06RAS Obs. Mayhill in New Mexico, 2 in MPECs 2010-G103 & 2010-G104 -- C/2010 G2, C/2010 G1
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-G100 & 2010-G102 -- 2010 GE35, 2010 GD35
H36Sandlot Obs. in Kansas, 2 in MPECs 2010-G100 & 2010-G102 -- 2010 GE35, 2010 GD35
204Schiaparelli Obs. in Italy, 1 in MPEC 2010-G103 -- C/2010 G1
D93Sendai Obs. in Japan, 1 in MPEC 2010-G103 -- C/2010 G1
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-G98 -- 2010 GA24
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2010-G98 -- 2010 FY80, 2005 YU55
A71Stixendorf Obs. in Austria, 1 in MPEC 2010-G103 -- C/2010 G1
926Tenagra II Obs. in Arizona, 6 in MPECs 2010-G98, 2010-G99, 2010-G100 & 2010-G102 -- 2010 GX23, 2010 GV23, 2010 GO33, 2010 GE35, 2010 GD35, 2010 GC35
H53Thompsonville Obs. in Illinois, 8 in MPEC 2010-G98 -- 2010 CM44, 2005 YU55, 88254, 54789, 218863, 3554, 1627, 433
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-G103 -- C/2010 G1
C51WISE in Earth polar orbit, 2 in MPECs 2010-G101 & 2010-G105 -- 2010 FH92, P/2009 WX51
367Yatsuka Obs. in Japan, 1 in MPEC 2010-G103 -- C/2010 G1
J08Zonalunar Obs. in Spain, 1 in MPEC 2010-G103 -- C/2010 G1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 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 GE35JPL Sentry15042013-204231.1e-05-2.57-2.570JPL: "Analysis based on 24 observations spanning 1.0398 days (2010-Apr-12.3176 to 2010-Apr-13.35737)." Diameter approximately 0.097 km. from mean, weighted H=22.7.
2010 GR33NEODyS15042030-2079124.26e-09-7.24-7.940NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2010/04/11.476 to 2010/04/12.435."
2010 GV23JPL Sentry15042096-210522.5e-06-7.36-7.550JPL: "Analysis based on 45 observations spanning 2.9864 days (2010-Apr-09.21954 to 2010-Apr-12.205901)." Diameter approximately 0.010 km. from mean, weighted H=27.8.
2010 GH7JPL Sentry15042099-2110258.7e-05-5.68-6.200JPL: "Analysis based on 49 observations spanning 5.0071 days (2010-Apr-07.38604 to 2010-Apr-12.39317)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2005 YU55NEODyS21112053-2109805.31e-06-3.90-4.820NEODyS: "Based on 416 optical observations (of which 2 are rejected as outliers) from 2005/12/24.299 to 2010/04/13.205."

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 13 April '10

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

2111Noted that NEODyS has updated its 2005 YU55 risk assessment - see above
Grabbed MPEC 2010-G105 - Comet P/2009 WX51 (Catalina) - see above
1905Grabbed MPEC 2010-G104 - Comet C/2010 G2 (Hill) - see above
1814Grabbed MPEC 2010-G103 - Comet C/2010 G1 (Boattini) - see above
1504Noted that JPL Sentry 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 NEODyS has posted 2010 GR33 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 GV23 risk assessment - see above
Grabbed MPEC 2010-G98 - Daily Orbit Update - see above
Grabbed MPEC 2010-G99 - 2010 GC35 - see above
Grabbed MPEC 2010-G100 - 2010 GD35 - see above
Grabbed MPEC 2010-G101 - 2010 FH92 - see above
Grabbed MPEC 2010-G102 - 2010 GE35 - see above