Comet 103P/Hartley 2 imaged by WISE on 10 May 
2010. Credit: NASA/JPL-Caltech/UCLA.

Although visual observers have only recently started reporting a hint of a tail for brightening (and soon to be visited) 103P/Hartley 2, this WISE space telescope false-color infrared image from back on May 10th, released yesterday, shows a tail as well as the comet's dust trail. The Hubble Space Telescope also has a 103P image posted yesterday from September 25th. Credit: NASA/JPL-Caltech/UCLA.


Contents  on 6 October '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 October '10

The MPC's NEO Confirmation Page has 5 listings: 2 new, 3 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and three updated listings. Of these, two were "one nighters."

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 October '10

Minor Planet Electronic Circulars

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


MPEC 2010-T38 - "23:28 UT" - Comets C/2001 A5, 2001 O3, 2001 R10, 2008 P7 (SOHO)


MPEC 2010-T37 - "23:25 UT" - Comets C/2000 P4, 2000 P5, 2000 S8, 2000 S9 (SOHO)


MPEC 2010-T36 - "22:54 UT" - 2010 RE64


MPEC 2010-T35 - "16:11 UT" - Observations of Comets


MPEC 2010-T34 - "15:26 UT" - 2010 RM64


<< DOU on 6 Oct. '10 >>  MPEC 2010-T33 - "06:07 UT" - Daily Orbit Update


MPEC 2010-T32 - "03:00 UT" - Comet C/2010 S1 (LINEAR)


MPEC 2010-T31 - "02:50 UT" - Comet P/2010 R2 (La Sagra)


MPEC 2010-T30 - "02:42 UT" - Comet C/2010 R1 (LINEAR)

Observers  on 6 October '10

A total of 70 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 9 in MPEC 2010-T35 -- C/2010 G2, C/2009 UG89, C/2009 P1, C/2008 FK75, C/2006 S3, 215P, 126P, 65P, 43P
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2010-T35 -- 103P
I92Astreo Obs., 1 in MPEC 2010-T35 -- 103P
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPEC 2010-T33 -- 2010 TN4, 2010 TL, 2010 TK, 2010 TE, 2010 TD, 2010 ST16, 2010 SK15, 2010 SH15, 2010 SF15, 2010 SD13, 2010 RD31
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2010-T35 -- 103P
I32Beta Orionis Obs. in Argentina, 3 in MPEC 2010-T35 -- C/2009 P1, 65P, 10P
I99Blanquita Obs. in Spain, 4 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2008 FK75, C/2006 S3, 236P
B59Borken Obs. in Germany, 1 in MPEC 2010-T35 -- 103P
B96Brixiis Obs. in Belgium, 1 in MPEC 2010-T35 -- 103P
215Buchloe Obs. in Germany, 7 in MPECs 2010-T31, 2010-T32 & 2010-T35 -- C/2010 S1, P/2010 R2, C/2010 J2, C/2009 Y1, C/2009 UG89, C/2008 FK75, 103P
160Castelmartini Obs. in Italy, 8 in MPECs 2010-T31, 2010-T33 & 2010-T35 -- 2010 RK43, P/2010 R2, C/2008 S3, C/2008 FK75, C/2006 S3, 138847, 236P, 103P
A77Chante-Perdrix Obs. in France, 9 in MPECs 2010-T30, 2010-T32 & 2010-T35 -- C/2010 S1, C/2010 R1, C/2010 J2, C/2009 K5, C/2006 S3, 240P, 236P, 126P, 103P
J01Cielo Profundo Obs. in Spain, 7 in MPECs 2010-T31, 2010-T32 & 2010-T35 -- C/2010 S1, P/2010 R2, C/2009 S3, C/2008 S3, C/2006 S3, 103P, 10P
850Cordell-Lorenz Obs. in Tennessee, 3 in MPECs 2010-T30 & 2010-T35 -- C/2010 R1, 103P, 10P
B50Corner Obs. in Germany, 2 in MPEC 2010-T35 -- C/2006 S3, 103P
I39Cruz del Sur Obs., 1 in MPEC 2010-T35 -- C/2009 P1
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 5 in MPEC 2010-T33 -- 2010 TM3, 2010 TK, 2010 RC130, 2010 MR87, 2010 LY63
E85Farm Cove Obs. in New Zealand, 2 in MPEC 2010-T35 -- C/2009 P1, 65P
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2010-T33 -- 2010 RR179
372Geisei Obs. in Japan, 1 in MPEC 2010-T30 -- C/2010 R1
379Hamamatsu-Yuto Obs. in Japan, 7 in MPECs 2010-T33 & 2010-T35 -- 2010 RP80, 2010 RN80, 2010 LY63, 2000 TJ1, 137032, 2212, 103P
J37Huelva Obs. in Spain, 2 in MPEC 2010-T33 -- 4954, 4197
987Isle of Man Obs. on the Isle of Man, 3 in MPEC 2010-T35 -- C/2007 Q3-A, C/2006 S3, 103P
J28Jaen Obs. in Spain, 2 in MPECs 2010-T33 & 2010-T35 -- 2010 RK43, 103P
G92Jarnac Obs. in Arizona, 1 in MPEC 2010-T35 -- 219P
585Kiev Comet Station in the Ukraine, 3 in MPEC 2010-T35 -- C/2010 J2, C/2010 B1, 103P
D95Kurihara Obs. in Japan, 4 in MPEC 2010-T35 -- C/2009 UG89, C/2008 FK75, C/2006 S3, 103P
704LINEAR in New Mexico, 7 in MPECs 2010-T33 & 2010-T35 -- C/2010 J2, C/2008 S3, 250162, 17181, 153842, 219P, 10P
J75La Sagra Obs. in Spain, 9 in MPECs 2010-T33 & 2010-T35 -- 2010 RP80, 2010 RA147, C/2008 S3, 2007 RU17, 65679, 29075, 19764, 2212, 244P
809La Silla in Chile, 1 in MPEC 2010-T36 -- 2010 RE64
J38La Vara Obs. in Spain, 1 in MPEC 2010-T35 -- C/2009 UG89
B33Libbiano Obs. in Italy, 3 in MPECs 2010-T31, 2010-T32 & 2010-T35 -- C/2010 S1, P/2010 R2, 103P
J59Linceo Obs. in Spain, 1 in MPEC 2010-T35 -- 65P
I36Los Campitos Obs. in Argentina, 1 in MPEC 2010-T35 -- 10P
B82Maidbronn Obs. in Germany, 6 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2010 G2, C/2009 S3, C/2008 FK75, C/2007 Q3-A, 103P
C10Maisoncelles Obs. in France, 3 in MPECs 2010-T32 & 2010-T35 -- C/2010 S1, 236P, 103P
J40Malaga Obs. in Spain, 2 in MPEC 2010-T35 -- 103P, 10P
118Modra Obs. in Slovakia, 2 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2010 B1
152Moletai Obs. in Lithuania, 2 in MPECs 2010-T32 & 2010-T35 -- C/2010 S1, 103P
213Montcabre Obs. in Spain, 11 in MPECs 2010-T30, 2010-T31, 2010-T32, 2010-T33 & 2010-T35 -- C/2010 S1, 2010 RC130, P/2010 R2, C/2010 R1, C/2010 J2, C/2008 FK75, C/2007 Q3-A, C/2006 S3, 236P, 103P, 10P
900Moriyama Obs. in Japan, 1 in MPEC 2010-T35 -- 215P
474Mt. John Obs. in New Zealand, 5 in MPECs 2010-T30 & 2010-T33 -- 2010 TE, 2010 RU30, 2010 RB, C/2010 R1, 2001 UP27
J78Murcia Obs. in Spain, 4 in MPEC 2010-T35 -- C/2008 FK75, 103P, 65P, 10P
J47Nazaret Obs. in Spain, 2 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, 103P
583Odessa-Mayaki Obs. in the Ukraine, 5 in MPEC 2010-T35 -- C/2010 B1, C/2008 FK75, C/2006 S3, 103P, 10P
D92Osaki Obs. in Japan, 4 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2008 FK75, 236P, 103P
B49Paus Obs. in Spain, 5 in MPECs 2010-T31, 2010-T32 & 2010-T35 -- C/2010 S1, P/2010 R2, C/2008 S3, 236P, 103P
H23Pear Tree Obs. in Florida, 3 in MPEC 2010-T35 -- C/2006 S3, 236P, 103P
J53Posadas Obs. in Spain, 1 in MPEC 2010-T35 -- 103P
H06RAS Obs. Mayhill in New Mexico, 3 in MPEC 2010-T35 -- C/2010 G2, C/2009 T1, 236P
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2010-T35 -- C/2009 P1
473Remanzacco Obs. in Italy, 2 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2008 FK75
939Rodeno Obs. in Spain, 4 in MPEC 2010-T35 -- C/2008 FK75, C/2006 S3, 103P, 10P
H36Sandlot Obs. in Kansas, 2 in MPEC 2010-T35 -- C/2009 T1, 241P
204Schiaparelli Obs. in Italy, 8 in MPECs 2010-T30, 2010-T33 & 2010-T35 -- 2010 SV3, C/2010 R1, C/2010 B1, C/2009 K5, C/2008 S3, 3200, 244P, 241P
E12Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2010-T33 & 2010-T34 -- 2010 SJ, 2010 RM64, 2006 SC6, 2003 UV11, 16657
510Siegen Obs. in Germany, 3 in MPEC 2010-T35 -- C/2008 FK75, C/2007 Q3-A, 103P
G68Sierra Stars Obs. in northern California, 1 in MPEC 2010-T35 -- 103P
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2010-T37 & 2010-T38 -- C/2008 P7, C/2001 R10, C/2001 O3, C/2001 A5, C/2000 S9, C/2000 S8, C/2000 P5, C/2000 P4
587Sormano Obs. in Italy, 1 in MPEC 2010-T33 -- 2010 SK15
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-T33 -- 2010 RT11
A98Taurus-1 Obs. in Belarus, 7 in MPECs 2010-T33 & 2010-T35 -- C/2010 G2, C/2010 B1, C/2009 UG89, 2004 FU4, 240P, 236P, 103P
H10Tzec Maun Obs. Mayhill in New Mexico, 7 in MPECs 2010-T31, 2010-T32 & 2010-T35 -- C/2010 S1, P/2010 R2, C/2009 K5, C/2008 FK75, C/2006 S3, 103P, 10P
D96Tzec Maun Obs. Moorook in South Australia, 6 in MPEC 2010-T35 -- C/2009 P1, C/2006 S3, 215P, 65P, 10P, 2P
B51Vallauris Obs. in France, 1 in MPEC 2010-T35 -- 103P
H47Vicksburg Obs. in Mississippi, 6 in MPEC 2010-T35 -- C/2010 B1, C/2008 S3, C/2006 S3, 240P, 219P, 10P
B42Vitebsk Obs. in Belarus, 2 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2008 FK75
C51WISE in Earth polar orbit, 7 in MPEC 2010-T33 -- 2010 GM23, 2008 EE, 53789, 246138, 154589, 152978, 7839
367Yatsuka Obs. in Japan, 6 in MPEC 2010-T35 -- C/2009 Y1, C/2009 P1, C/2006 S3, 103P, 65P, 10P
J08Zonalunar Obs. in Spain, 3 in MPECs 2010-T31 & 2010-T35 -- P/2010 R2, C/2006 S3, 10P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 October '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 TU5NEODyS15412016-2090591.57e-07-3.92-4.690NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2010/10/03.411 to 2010/10/05.319."
2010 TEJPL Sentry1541R E M O V E DJPL: Risk listing removed at 0857 UTC.
2010 TDJPL Sentry15412072-209162.4e-06-6.44-6.810JPL: "Analysis based on 27 observations spanning 4.0814 days (2010-Oct-01.20604 to 2010-Oct-05.287411)." Diameter approximately 0.014 km. from mean, weighted H=26.9.
NEODyS15412072-208552.23e-06-6.47-6.840NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2010/10/01.207 to 2010/10/05.288."
2010 GM23JPL Sentry15412087-2110234.9e-05-4.37-4.840JPL: "Analysis based on 54 observations spanning 4.7837 days (2010-Apr-08.31133 to 2010-Apr-13.09506)." Diameter approximately 0.040 km. from mean, weighted H=24.7.

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 October '10

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

2359Grabbed MPEC 2010-T37 - Comets C/2000 P4, 2000 P5, 2000 S8, 2000 S9 (SOHO) - see above
Grabbed MPEC 2010-T38 - Comets C/2001 A5, 2001 O3, 2001 R10, 2008 P7 (SOHO) - see above
2303Grabbed MPEC 2010-T36 - 2010 RE64 - see above
1732Grabbed MPEC 2010-T35 - Observations of Comets - see above
1541Noted that JPL Sentry has updated its 2010 GM23 risk assessment - see above
Noted that JPL Sentry has updated its 2010 TD risk assessment - see above
Noted that NEODyS has updated its 2010 TD risk assessment - see above
Noted that JPL Sentry has removed 2010 TE as an impact risk - see above
Noted that NEODyS has posted 2010 TU5 as an impact risk - see above
Grabbed MPEC 2010-T33 - Daily Orbit Update - see above
Grabbed MPEC 2010-T34 - 2010 RM64 - see above
0310Grabbed MPEC 2010-T30 - Comet C/2010 R1 (LINEAR) - see above
Grabbed MPEC 2010-T31 - Comet P/2010 R2 (La Sagra) - see above
Grabbed MPEC 2010-T32 - Comet C/2010 S1 (LINEAR) - see above