Contents  on 17 October '07

Resources:

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 17 October '07

The MPC's NEO Confirmation Page has 13 listings: 2 new, 11 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and eleven updated listings. Of these, ten were "one nighters." The Tracking News counted a total of fifteen objects listed on the NEOCP at some point on this day.

New MPECs  on 17 October '07

Minor Planet Electronic Circulars

There were four MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-U18 - "15:23 UT" - 2007 TE106


<< DOU on 17 Oct. '07 >>  MPEC 2007-U17 - "06:09 UT" - Daily Orbit Update


MPEC 2007-U16 - "01:32 UT" - Comets C/2007 M7, 2007 M8, 2007 M9, 2007 M10 (SOHO)


MPEC 2007-U15 - "01:21 UT" - Comets C/2007 M4, 2007 M5, 2007 M6 (SOHO)

Observers  on 17 October '07

A total of 21 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2007-U17 -- 2007 TS19
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2007-U17 -- 2007 TB23, 2007 DL41, 2005 SG, 2004 RD252
448Desert Moon Obs. in New Mexico, 5 in MPEC 2007-U17 -- 2007 TV24, 2007 TK8, 2007 SV2, 2007 SV11, 2007 SJ
113Drebach Obs. in Germany, 5 in MPEC 2007-U17 -- 2007 TH1, 2007 TG8, 2007 TG15, 2007 RF5, 2007 LR32
639Dresden Obs. in Germany, 2 in MPEC 2007-U17 -- 2007 TS19, 2002 UA31
151Eschenberg Obs. in Switzerland, 4 in MPEC 2007-U17 -- 2007 TS19, 2007 TR24, 2007 TH1, 2002 UA31
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-U17 -- 2007 UJ
A17Guidestar Obs. in Germany, 2 in MPEC 2007-U17 -- 2007 TC23, 2007 SP6
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2007-U17 -- 2007 PU11, 2002 RC118
246KLENOT in the Czech Republic, 3 in MPECs 2007-U17 & 2007-U18 -- 2007 TV24, 2007 TH3, 2007 TE106
704LINEAR in New Mexico, 1 in MPEC 2007-U17 -- 2007 TK8
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2007-U17 -- 2007 TH3
J40Malaga Obs. in Spain, 1 in MPEC 2007-U17 -- 4954
118Modra Obs. in Slovakia, 2 in MPEC 2007-U17 -- 2007 TM15, 2007 PU11
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2007-U17 & 2007-U18 -- 2007 TU68, 2007 TL16, 2007 TH72, 2007 TH19, 2007 TE106, 2007 TC14, 19764, 163051
434San Benedetto Po Obs. in Italy, 2 in MPEC 2007-U17 -- 2007 RF5, 2007 LR32
E12Siding Spring Survey in New South Wales, 1 in MPEC 2007-U17 -- 2007 TA19
2492LASCO Coronagraph 2 (SOHO C2) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 7 in MPECs 2007-U15 & 2007-U16 -- C/2007 M9, C/2007 M8, C/2007 M7, C/2007 M6, C/2007 M5, C/2007 M4, C/2007 M10
2493LASCO Coronagraph 3 (SOHO C3) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPECs 2007-U15 & 2007-U16 -- C/2007 M6, C/2007 M4, C/2007 M10
691Spacewatch 0.9m telescope in Arizona, 11 in MPECs 2007-U17 & 2007-U18 -- 2007 TK15, 2007 TH19, 2007 TE106, 2007 SR11, 2007 PU11, 2005 XL80, 52768, 4503, 4486, 3757, 2212
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2007-U17 & 2007-U18 -- 2007 TW68, 2007 TH19, 2007 TE106, 2007 TC23, 2007 TB23, 2007 PU11
A48Verona Obs. in Italy, 3 in MPEC 2007-U17 -- 2007 TS19, 2007 TR65, 2007 TC14

Impact Risk Monitoring  on 17 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 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 UHNEODyS14062013-202339.68e-08-4.94-5.320NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/10/16.323 to 2007/10/16.859."
JPL Sentry03102018-2106709.2e-08-5.32-5.660JPL: "Analysis based on 15 observations spanning .53580 days (2007-Oct-16.32204 to 2007-Oct-16.85784)." Diameter approximately 0.130 km. from mean, weighted H=22.0.
2007 TH72NEODyS12462038-2082144.24e-08-6.96-7.470NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2007/10/15.204 to 2007/10/16.272."
JPL Sentry12452035-2105374.4e-07-6.02-6.350JPL: "Analysis based on 16 observations spanning 1.0684 days (2007-Oct-15.20289 to 2007-Oct-16.27125)." Diameter approximately 0.046 km. from mean, weighted H=24.3.
2007 TC23NEODyS1405R E M O V E D
JPL Sentry1334R E M O V E DJPL: Risk listing removed at 1314 UTC.
2007 TB23JPL Sentry13342042-210776.2e-07-3.19-3.230JPL: "Analysis based on 40 observations spanning 6.0700 days (2007-Oct-10.38885 to 2007-Oct-16.45887)." Diameter approximately 0.610 km. from mean, weighted H=18.7.
NEODyS1246204212.98e-11-7.10-7.100NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2007/10/10.390 to 2007/10/16.460."
2007 TH19JPL Sentry1245201211.3e-10-5.26-5.260JPL: "Analysis based on 35 observations spanning 7.9534 days (2007-Oct-08.42597 to 2007-Oct-16.37936)." Diameter approximately 1.200 km. from mean, weighted H=17.2.
NEODyS1405R E M O V E D
2007 TL16NEODyS12462073-2090175.8e-06-6.03-6.200NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2007/10/09.288 to 2007/10/16.343."
JPL Sentry12452074-2095136.0e-06-5.96-6.120JPL: "Analysis based on 35 observations spanning 7.0546 days (2007-Oct-09.28741 to 2007-Oct-16.34199)." Diameter approximately 0.021 km. from mean, weighted H=26.1.
2007 TC14NEODyS1406208211.47e-07-5.27-5.270NEODyS: "Based on 129 optical observations (of which 0 are rejected as outliers) from 2007/10/08.391 to 2007/10/16.872."
JPL Sentry1245208211.4e-07-5.28-5.280JPL: "Analysis based on 129 observations spanning 8.4810 days (2007-Oct-08.39044 to 2007-Oct-16.87145)." Diameter approximately 0.130 km. from mean, weighted H=22.2.

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" for more about this.

Chronology  on 17 October '07

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

1558Grabbed MPEC 2007-U18 - 2007 TE106 - see above
1406Noted that NEODyS has updated its 2007 TC14 risk assessment - see above
1405Noted that NEODyS has removed 2007 TC23 as an impact risk - see above
Noted that NEODyS has removed 2007 TH19 as an impact risk - see above
Noted that NEODyS has posted 2007 UH as an impact risk - see above
1334Noted that JPL Sentry has updated its 2007 TB23 risk assessment - see above
Noted that JPL Sentry has removed 2007 TC23 as an impact risk - see above
1246Noted that NEODyS has updated its 2007 TB23 risk assessment - see above
Noted that NEODyS has updated its 2007 TH72 risk assessment - see above
Noted that NEODyS has updated its 2007 TL16 risk assessment - see above
Grabbed MPEC 2007-U17 - Daily Orbit Update - see above
1245Noted that JPL Sentry has updated its 2007 TC14 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TH19 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TH72 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TL16 risk assessment - see above
0310Noted that JPL Sentry has posted 2007 UH as an impact risk - see above
0201Grabbed MPEC 2007-U15 - Comets C/2007 M4, 2007 M5, 2007 M6 (SOHO) - see above
Grabbed MPEC 2007-U16 - Comets C/2007 M7, 2007 M8, 2007 M9, 2007 M10 (SOHO) - see above