Contents  on 11 October '07

Resources:

Notes: Until September 16th this daily news page, which had included links to news and to science papers as well as some occasional original reporting, was called Major News About Minor Objects. Without the news-link and science-link sections, this page was renamed as The Tracking News to more accurately reflect its continuing purpose.

The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site.

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 this year 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 11 October '07

The MPC's NEO Confirmation Page has 17 listings: 7 new, 10 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven new and ten updated listings. All of these were "one nighters." So far Tracking News has counted a total of 36 objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 11 October '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been ten MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-T79 - "21:44 UT" - 2007 TL23


MPEC 2007-T78 - "18:12 UT" - Comets C/2007 K14, 2007 K15, 2007 K16, 2007 K17, 2007 K18 (SOHO)


MPEC 2007-T77 - "18:06 UT" - Comets C/2007 K10, 2007 K11, 2007 K12, 2007 K13 (SOHO)


MPEC 2007-T76 - "17:20 UT" - Comet P/2007 T2 (Kowalski)


MPEC 2007-T75 - "17:14 UT" - 2007 TC23


MPEC 2007-T74 - "17:09 UT" - 2007 TB23


MPEC 2007-T73 - "17:05 UT" - 2007 TA23


MPEC 2007-T72 - "15:46 UT" - 2007 TY18


MPEC 2007-T71 - "13:36 UT" - 2007 TX22


<< DOU on 11 Oct. '07 >>  MPEC 2007-T70 - "06:08 UT" - Daily Orbit Update

Observers  on 11 October '07

A total of 27 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 3 in MPECs 2007-T70 & 2007-T79 -- 2007 TL23, 2007 TG15, 2007 TC14
H55Astronomical Research Obs. (ARO) in Illinois, 6 in MPECs 2007-T70 & 2007-T72 -- 2007 TY18, 2007 TL15, 2007 TG1, 2007 TC14, 2007 QA2, 2007 PQ
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2007-T70, 2007-T71, 2007-T74, 2007-T75, 2007-T76 & 2007-T79 -- 2007 TX22, 2007 TL23, 2007 TC23, 2007 TB23, P/2007 T2, 2007 RU12, 2002 UO3, 162117
A77Chante-Perdrix Obs. in France, 2 in MPEC 2007-T70 -- 2002 RC118, 17182
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2007-T76 -- P/2007 T2
151Eschenberg Obs. in Switzerland, 2 in MPEC 2007-T70 -- 2007 RF5, 2001 RY47
734Farpoint Obs. in Kansas, 1 in MPEC 2007-T76 -- P/2007 T2
H87Fenwick Obs., 1 in MPEC 2007-T70 -- 2007 TG15
651Grasslands Obs. in Arizona, 3 in MPECs 2007-T71, 2007-T76 & 2007-T79 -- 2007 TX22, 2007 TL23, P/2007 T2
J95Great Shefford Obs. in England, 2 in MPEC 2007-T70 -- 2007 TV18, 2007 TT18
B15Inastars Obs. in Germany, 1 in MPEC 2007-T70 -- 2007 TT18
585Kiev Comet Station in the Ukraine, 1 in MPEC 2007-T76 -- P/2007 T2
046Klet Obs. in the Czech Republic, 2 in MPEC 2007-T70 -- 2007 SG11, 2007 LR32
704LINEAR in New Mexico, 1 in MPEC 2007-T70 -- 2007 SG11
699LONEOS in Arizona, 6 in MPEC 2007-T70 -- 2007 TG8, 2007 TG15, 2007 RF5, 2007 KN4, 2002 RC118, 1998 XC9
D35Lulin Minor Bodies Tracking (LIMIT) in Taiwan, 2 in MPEC 2007-T70 -- 2007 TS19, 2007 TL16
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2007-T70, 2007-T72, 2007-T73, 2007-T74, 2007-T75 & 2007-T76 -- 2007 TY18, 2007 TC23, 2007 TB23, 2007 TA23, P/2007 T2, 2004 TH10, 1997 GH28, 8034, 3691
J93Mt. Tuffley Obs. in England, 1 in MPEC 2007-T70 -- 4954
A13Naef Obs. in Switzerland, 3 in MPEC 2007-T70 -- 2000 TH1, 17182, 152787
649Powell Obs. in Kansas, 3 in MPECs 2007-T71, 2007-T75 & 2007-T79 -- 2007 TX22, 2007 TL23, 2007 TC23
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2007-T70 -- 162273
473Remanzacco Obs. in Italy, 1 in MPEC 2007-T76 -- P/2007 T2
204Schiaparelli Obs. in Italy, 2 in MPECs 2007-T70 & 2007-T76 -- 2007 TJ19, P/2007 T2
2492LASCO Coronagraph 2 (SOHO C2) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 9 in MPECs 2007-T77 & 2007-T78 -- C/2007 K18, C/2007 K17, C/2007 K16, C/2007 K15, C/2007 K14, C/2007 K13, C/2007 K12, C/2007 K11, C/2007 K10
2493LASCO Coronagraph 3 (SOHO C3) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPECs 2007-T77 & 2007-T78 -- C/2007 K18, C/2007 K10
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2007-T70 & 2007-T72 -- 2007 TY18, 2007 TD1, 2007 TB14, 2006 RJ1
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2007-T72 -- 2007 TY18
926Tenagra II Obs. in Arizona, 2 in MPECs 2007-T72 & 2007-T74 -- 2007 TY18, 2007 TB23

Impact Risk Monitoring  on 11 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now usually the year 2090.
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
2007 TX22JPL18022040-2079412.6e-05-6.40-7.080JPL: "Analysis based on 19 observations spanning .13425 days (2007-Oct-11.20094 to 2007-Oct-11.33519)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
2007 TX18NEODyS2010207211.99e-09-5.77-5.770NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2007/10/09.333 to 2007/10/10.291."
JPL01312012-2106361.3e-08-3.66-3.850JPL: "Analysis based on 19 observations spanning .95813 days (2007-Oct-09.33181 to 2007-Oct-10.289939)." Diameter approximately 1.400 km. from mean, weighted H=16.9.
2007 TV18JPL13462057-210763.6e-09-7.99-8.360JPL #2 for the day: "Analysis based on 18 observations spanning 1.6503 days (2007-Oct-09.20375 to 2007-Oct-10.85402)." Diameter approximately 0.067 km. from mean, weighted H=23.5.
NEODyS13462056-206031.73e-09-8.20-8.330NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2007/10/09.205 to 2007/10/10.855."
2007 TU18NEODyS15022031-208848.05e-09-7.55-7.560NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2007/10/09.203 to 2007/10/10.317."
JPL04442031-208371.6e-08-7.37-7.520JPL: "Analysis based on 9 observations spanning 1.1140 days (2007-Oct-09.20211 to 2007-Oct-10.31609)." Diameter approximately 0.044 km. from mean, weighted H=24.4.
2007 TL16NEODyS20102061-2090637.78e-05-4.90-5.130NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2007/10/09.288 to 2007/10/09.787."
JPL13462061-2079197.0e-05-4.82-5.000JPL: "Analysis based on 18 observations spanning .49848 days (2007-Oct-09.28741 to 2007-Oct-09.78589)." Diameter approximately 0.021 km. from mean, weighted H=26.1.
2007 TL15NEODyS1416R E M O V E D
JPL1346R E M O V E DJPL: Risk listing removed at 1155 UTC.
2007 TH19NEODyS13462009-2087417.79e-08-2.52-2.890NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2007/10/08.427 to 2007/10/10.434."
JPL03402009-2106395.0e-08-2.84-2.910JPL: "Analysis based on 17 observations spanning 2.0071 days (2007-Oct-08.42597 to 2007-Oct-10.43312)." Diameter approximately 1.121 km. from mean, weighted H=17.4.
2007 TC23JPL20092040-2103181.1e-08-5.98-6.730JPL: "Analysis based on 16 observations spanning 1.0271 days (2007-Oct-10.44721 to 2007-Oct-11.47434)." Diameter approximately 0.258 km. from mean, weighted H=20.6.
2007 TC14NEODyS1502R E M O V E D
JPL1346R E M O V E DJPL: Risk listing removed at 1004 UTC.
2007 TB14NEODyS1416R E M O V E D
JPL1346R E M O V E DJPL: Risk listing removed at 1257 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 an 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" for more about this.

Chronology  on 11 October '07

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

2333Grabbed MPEC 2007-T79 - 2007 TL23 - see above
2010Noted that NEODyS has updated its 2007 TL16 risk assessment - see above
2009Noted that JPL has posted 2007 TC23 as an impact risk - see above
Noted that NEODyS has posted 2007 TX18 as an impact risk - see above
Grabbed MPEC 2007-T77 - Comets C/2007 K10, 2007 K11, 2007 K12, 2007 K13 (SOHO) - see above
Grabbed MPEC 2007-T78 - Comets C/2007 K14, 2007 K15, 2007 K16, 2007 K17, 2007 K18 (SOHO) - see above
1802Noted that JPL has posted 2007 TX22 as an impact risk - see above
1801Grabbed MPEC 2007-T76 - Comet P/2007 T2 (Kowalski) - see above
1729Grabbed MPEC 2007-T73 - 2007 TA23 - see above
Grabbed MPEC 2007-T74 - 2007 TB23 - see above
Grabbed MPEC 2007-T75 - 2007 TC23 - see above
1601Grabbed MPEC 2007-T72 - 2007 TY18 - see above
1502Noted that NEODyS has removed 2007 TC14 as an impact risk - see above
Noted that NEODyS has posted 2007 TU18 as an impact risk - see above
1416Noted that NEODyS has removed 2007 TB14 as an impact risk - see above
Noted that NEODyS has removed 2007 TL15 as an impact risk - see above
1347Grabbed MPEC 2007-T70 - Daily Orbit Update - see above
1346Noted that JPL has removed 2007 TB14 as an impact risk - see above
Noted that JPL has removed 2007 TC14 as an impact risk - see above
Noted that NEODyS has posted 2007 TH19 as an impact risk - see above
Noted that JPL has removed 2007 TL15 as an impact risk - see above
Noted that JPL has updated its 2007 TL16 risk assessment - see above
Noted that JPL has updated its 2007 TV18 risk assessment - see above
Noted that NEODyS has posted 2007 TV18 as an impact risk - see above
Grabbed MPEC 2007-T71 - 2007 TX22 - see above
0444Noted that JPL has posted 2007 TU18 as an impact risk - see above
0340Noted that JPL has posted 2007 TH19 as an impact risk - see above
Noted that JPL has posted 2007 TV18 as an impact risk - see above
0131Noted that JPL has posted 2007 TX18 as an impact risk - see above