Mars meterorite found by MER Opportunity. 
Credit: NASA/JPL-Caltech/Cornell Univ.

Trundling across Mars toward its next destination last month, MER Opportunity happened upon a reported nickel-iron meteorite now named Oilean Ruaidh. See more images here (e.g., Panoramic Camera for Sol 2368, 2369, and 2371). Credit: NASA/JPL-Caltech/Cornell Univ.


Contents  on 7 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 7 October '10

The MPC's NEO Confirmation Page has 10 listings: 1 new, 9 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and nine updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of fourteen 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 7 October '10

Minor Planet Electronic Circulars

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


MPEC 2010-T51 - "22:31 UT" - 2007 PS45


MPEC 2010-T50 - "21:30 UT" - Comets C/2010 K3, 2010 K4, 2010 K5, 2010 K6, 2010 K7, 2010 K8 (SOHO)


MPEC 2010-T49 - "20:32 UT" - Comets C/2010 J12, 2010 J13, 2010 J14, 2010 J15, 2010 J16 (SOHO)


MPEC 2010-T48 - "20:16 UT" - Comets C/2010 J6, 2010 J7, 2010 J8, 2010 J9, 2010 J10, 2010 J11 (SOHO)


MPEC 2010-T47 - "18:47 UT" - Comets C/2010 H7, 2010 H8, 2010 H9, 2010 H10, 2010 H11 (SOHO)


MPEC 2010-T46 - "16:11 UT" - 2009 YS6


MPEC 2010-T45 - "15:39 UT" - 2010 TK7


MPEC 2010-T44 - "15:19 UT" - Comet P/2010 P4 (WISE)


MPEC 2010-T43 - "11:08 UT" - 2010 TJ7


MPEC 2010-T42 - "11:03 UT" - 2010 TH7


<< DOU on 7 Oct. '10 >>  MPEC 2010-T41 - "06:07 UT" - Daily Orbit Update


MPEC 2010-T40 - "00:14 UT" - 2006 WU29


MPEC 2010-T39 - "00:10 UT" - 2003 YS17

Observers  on 7 October '10

A total of 28 observing facilities appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2010-T43 -- 2010 TJ7
H21Astronomical Research Obs. Westfield in Illinois, 15 in MPECs 2010-T41, 2010-T42 & 2010-T43 -- 2010 TU5, 2010 TN4, 2010 TM4, 2010 TM, 2010 TL, 2010 TJ7, 2010 TH7, 2010 TE, 2010 SZ16, 2010 SS16, 2010 SH13, 2010 SF15, 2010 SD13, 2010 SA17, 2010 RN80
807`program code "`" (30) via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2010-T45 -- 2010 TK7
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 5 in MPECs 2010-T41 & 2010-T42 -- 2010 TH7, 2010 RC130, 2010 MR87, 2007 RU17, 2000 TJ1
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2010-T41 -- 2010 RA91
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2010-T41 -- 2003 UV11
E10Faulkes Telescope South in New South Wales, 2 in MPECs 2010-T42 & 2010-T45 -- 2010 TK7, 2010 TH7
J95Great Shefford Obs. in England, 1 in MPEC 2010-T41 -- 2010 TM4
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2010-T41 -- 251346
704LINEAR in New Mexico, 4 in MPEC 2010-T41 -- 2010 TM3, 2010 LR68, 250620, 250162
J75La Sagra Obs. in Spain, 6 in MPEC 2010-T41 -- 2010 PM10, 2007 RU17, 243147, 168378, 5869, 4688
809La Silla in Chile, 1 in MPEC 2010-T51 -- 2007 PS45
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2010-T41, 2010-T42 & 2010-T43 -- 2010 TU5, 2010 TJ7, 2010 TH7
568^program code "^" (28) on Mauna Kea in Hawaii, 1 in MPEC 2010-T41 -- 2010 RT80
900Moriyama Obs. in Japan, 1 in MPEC 2010-T43 -- 2010 TJ7
474Mt. John Obs. in New Zealand, 15 in MPECs 2010-T39, 2010-T40, 2010-T41, 2010-T42, 2010-T43 & 2010-T45 -- 2010 TK7, 2010 TJ7, 2010 TH7, 2010 SL13, 2010 SK15, 2010 SJ, 2010 SG15, 2010 RN82, 2010 RC130, 2010 RA, 2010 NG3, 2010 MN51, 2010 JA35, 2006 WU29, 2003 YS17
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2010-T42 & 2010-T43 -- 2010 TJ7, 2010 TH7
A13Naef Obs. in Switzerland, 3 in MPEC 2010-T41 -- 2010 PM10, 2003 TX7, 243147
H06RAS Obs. Mayhill in New Mexico, 2 in MPECs 2010-T44 & 2010-T46 -- P/2010 P4, 2009 YS6
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-T43 -- 2010 TJ7
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-T43 -- 2010 TJ7
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-T43 -- 2010 TJ7
H36Sandlot Obs. in Kansas, 2 in MPECs 2010-T42 & 2010-T43 -- 2010 TJ7, 2010 TH7
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2010-T42 & 2010-T43 -- 2010 TJ7, 2010 TH7
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 22 in MPECs 2010-T47, 2010-T48, 2010-T49 & 2010-T50 -- C/2010 K8, C/2010 K7, C/2010 K6, C/2010 K5, C/2010 K4, C/2010 K3, C/2010 J9, C/2010 J8, C/2010 J7, C/2010 J6, C/2010 J16, C/2010 J15, C/2010 J14, C/2010 J13, C/2010 J12, C/2010 J11, C/2010 J10, C/2010 H9, C/2010 H8, C/2010 H7, C/2010 H11, C/2010 H10
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 4 in MPECs 2010-T47, 2010-T48, 2010-T49 & 2010-T50 -- C/2010 K6, C/2010 J7, C/2010 J14, C/2010 H8
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2010-T41 -- 2010 RQ80, 2010 RP80, 1998 QB28, 249816, 19764, 18736
H10Tzec Maun Obs. Mayhill in New Mexico, 2 in MPECs 2010-T43 & 2010-T46 -- 2010 TJ7, 2009 YS6
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-T43 -- 2010 TJ7
C51WISE in Earth polar orbit, 1 in MPEC 2010-T45 -- 2010 TK7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 October '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 TU5JPL Sentry15532028-2093208.0e-09-5.24-5.760JPL: "Analysis based on 28 observations spanning 3.7913 days (2010-Oct-03.41063 to 2010-Oct-07.20195)." Diameter approximately 0.430 km. from mean, weighted H=19.5.
NEODyS15532016-2074165.49e-09-5.41-6.050NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2010/10/03.411 to 2010/10/07.203."
2010 TMJPL Sentry15532022-2110781.4e-07-4.16-4.690JPL: "Analysis based on 15 observations spanning 3.9698 days (2010-Oct-02.44882 to 2010-Oct-06.418663)." Diameter approximately 0.421 km. from mean, weighted H=19.6.
NEODyS15532046-208042.65e-08-4.60-4.640NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2010/10/02.450 to 2010/10/06.419."
2010 SZ16JPL Sentry1553R E M O V E DJPL: Risk listing removed at 0949 UTC.

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 7 October '10

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

2302Grabbed MPEC 2010-T51 - 2007 PS45 - see above
2202Grabbed MPEC 2010-T50 - Comets C/2010 K3, 2010 K4, 2010 K5, 2010 K6, 2010 K7, 2010 K8 (SOHO) - see above
2105Grabbed MPEC 2010-T48 - Comets C/2010 J6, 2010 J7, 2010 J8, 2010 J9, 2010 J10, 2010 J11 (SOHO) - see above
Grabbed MPEC 2010-T49 - Comets C/2010 J12, 2010 J13, 2010 J14, 2010 J15, 2010 J16 (SOHO) - see above
1949Grabbed MPEC 2010-T47 - Comets C/2010 H7, 2010 H8, 2010 H9, 2010 H10, 2010 H11 (SOHO) - see above
1714Grabbed MPEC 2010-T46 - 2009 YS6 - see above
1553Noted that JPL Sentry has removed 2010 SZ16 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 TM risk assessment - see above
Noted that NEODyS has updated its 2010 TM risk assessment - see above
Noted that JPL Sentry has updated its 2010 TU5 risk assessment - see above
Noted that NEODyS has updated its 2010 TU5 risk assessment - see above
Grabbed MPEC 2010-T41 - Daily Orbit Update - see above
Grabbed MPEC 2010-T42 - 2010 TH7 - see above
Grabbed MPEC 2010-T43 - 2010 TJ7 - see above
Grabbed MPEC 2010-T44 - Comet P/2010 P4 (WISE) - see above
Grabbed MPEC 2010-T45 - 2010 TK7 - see above
0052Grabbed MPEC 2010-T39 - 2003 YS17 - see above
Grabbed MPEC 2010-T40 - 2006 WU29 - see above