Contents  on 23 October '07

Resources:

NEOCP Activity  on 23 October '07

The MPC's NEO Confirmation Page has 8 listings: 3 new, 5 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and five updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of eleven 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 23 October '07

Minor Planet Electronic Circulars

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


MPEC 2007-U69 - "17:15 UT" - Observations of Comets


MPEC 2007-U68 - "16:54 UT" - Comet P/2007 T4 (Gibbs)


MPEC 2007-U67 - "16:48 UT" - Comet P/2007 T2 (Kowalski)


MPEC 2007-U66 - "16:43 UT" - Comet C/2007 T1 (McNaught)


MPEC 2007-U65 - "16:37 UT" - Comet C/2007 S2 (Lemmon)


MPEC 2007-U64 - "16:32 UT" - Comet P/2007 S1 (Zhao)


MPEC 2007-U63 - "16:28 UT" - Comet P/2007 R4 (Garradd)


MPEC 2007-U62 - "16:22 UT" - Comet P/2007 R3 (Gibbs)


MPEC 2007-U61 - "16:19 UT" - Comet P/2007 R2 (Gibbs)


MPEC 2007-U60 - "16:15 UT" - Comet P/2007 R1 (Larson)


MPEC 2007-U59 - "16:10 UT" - Comet C/2007 Q3 (Siding Spring)


MPEC 2007-U58 - "16:03 UT" - Comet P/2007 Q2 (Gilmore)


MPEC 2007-U57 - "11:42 UT" - 2007 UP6


MPEC 2007-U56 - "11:39 UT" - 2007 UO6


<< DOU on 23 Oct. '07 >>  MPEC 2007-U55 - "06:12 UT" - Daily Orbit Update

Observers  on 23 October '07

A total of 56 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 6 in MPECs 2007-U66, 2007-U67 & 2007-U69 -- P/2007 T2, C/2007 T1, C/2007 O1, C/2007 F1, C/2006 U6, C/2006 K1
H55Astronomical Research Obs. (ARO) in Illinois, 5 in MPECs 2007-U55 & 2007-U56 -- 2007 UO6, 2007 UG6, 2007 UF6, 2007 UD6, 2007 UB6
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2007-U69 -- 93P, 70P, 50P
413Australian Natl. Univ. 1m telescope in New South Wales, 1 in MPEC 2007-U66 -- C/2007 T1
413(K. Sarneczky via Australian Natl. Univ. 1m telescope in New South Wales, 3 in MPEC 2007-U55 -- 2007 US3, 2007 UH6, 2007 UC2
703Catalina Sky Survey (CSS) in Arizona, 24 in MPECs 2007-U55, 2007-U58, 2007-U60, 2007-U65, 2007-U67 & 2007-U69 -- P/2007 T2, C/2007 S2, 2007 RT19, P/2007 R1, P/2007 Q2, C/2006 M1, P/2005 Y2, 2005 SG, P/2004 F3, 2002 RC118, 2000 JN10, 21088, 161998, 154278, 11405, 8034, 4486, 3200, 2212, 1862, 191P, 179P, 139P, 70P
A77Chante-Perdrix Obs. in France, 6 in MPECs 2007-U64 & 2007-U69 -- P/2007 S1, C/2007 F1, 117P, 50P, 17P, 8P
734Farpoint Obs. in Kansas, 3 in MPECs 2007-U56, 2007-U57 & 2007-U68 -- 2007 UP6, 2007 UO6, P/2007 T4
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-U55 -- 2007 TM15
203GiaGa Obs. in Italy, 5 in MPECs 2007-U55 & 2007-U69 -- 2007 TS19, 2007 PU11, 2002 RC118, 191P, 93P
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2007-U69 -- C/2006 S5
458Guadarrama Obs. in Spain, 2 in MPEC 2007-U69 -- C/2006 OF2, 93P
442Gualba Obs. in Spain, 2 in MPEC 2007-U69 -- 50P, 29P
379Hamamatsu-Yuto Obs. in Japan, 5 in MPECs 2007-U55 & 2007-U69 -- 2007 TS19, 2007 PU11, 2007 LR32, 2002 RC118, 93P
D88Hiratsuka Obs., 5 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, 191P, 117P, 93P, 50P
J39Ingenio Obs., 4 in MPEC 2007-U69 -- P/2007 H1, C/2006 OF2, 188P, 93P
A21Irmtraut Obs. in Germany, 5 in MPEC 2007-U69 -- 188P, 110P, 29P, 17P, 8P
987Isle of Man Obs. on the Isle of Man, 2 in MPEC 2007-U69 -- 110P, 93P
J44Iturrieta Obs. in Spain, 1 in MPEC 2007-U69 -- 93P
701Junk Bond Obs. in Arizona, 1 in MPEC 2007-U69 -- C/2007 N3
246KLENOT in the Czech Republic, 1 in MPEC 2007-U62 -- P/2007 R3
415Kambah Obs. in Australia, 5 in MPECs 2007-U59, 2007-U63 & 2007-U69 -- P/2007 R4, C/2007 Q3, C/2006 U6, C/2006 Q1, C/2006 K1
585Kiev Comet Station in the Ukraine, 13 in MPECs 2007-U58, 2007-U60, 2007-U61, 2007-U62, 2007-U63, 2007-U64, 2007-U65, 2007-U66 & 2007-U69 -- C/2007 T1, C/2007 S2, P/2007 S1, P/2007 R4, P/2007 R3, P/2007 R2, P/2007 R1, P/2007 Q2, C/2006 OF2, 128P, 93P, 74P, 44P
704LINEAR in New Mexico, 19 in MPECs 2007-U55, 2007-U57, 2007-U65 & 2007-U69 -- 2007 UV3, 2007 UP6, 2007 UB6, C/2007 S2, C/2007 O1, 2007 LR32, C/2007 E1, C/2006 M1, P/2005 Y2, 2002 UR3, 2002 UA31, 3288, 191P, 188P, 179P, 139P, 128P, 117P, 113P
699LONEOS in Arizona, 11 in MPECs 2007-U55, 2007-U61, 2007-U62 & 2007-U69 -- 2007 RT19, P/2007 R3, P/2007 R2, C/2007 N3, C/2006 M1, P/2004 F3, 2000 JN10, 161998, 191P, 139P, 136P
J76La Murta Obs. in Spain, 7 in MPEC 2007-U69 -- P/2007 H1, C/2006 OF2, 188P, 93P, 50P, 29P, 8P
B33Libbiano Obs. in Italy, 2 in MPEC 2007-U69 -- 110P, 29P
J59Linceo Obs. in Spain, 5 in MPEC 2007-U69 -- P/2007 H1, C/2006 OF2, 191P, 188P, 117P
130Lumezzane Obs. in Italy, 2 in MPEC 2007-U69 -- C/2006 S3, 188P
118Modra Obs. in Slovakia, 1 in MPEC 2007-U61 -- P/2007 R2
213Montcabre Obs. in Spain, 8 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, P/2007 H1, C/2006 OF2, 188P, 116P, 93P, 50P, 17P
945Monte Deva Obs. in Spain, 7 in MPEC 2007-U69 -- P/2007 H1, C/2006 S5, C/2006 OF2, 191P, 188P, 93P, 50P
900Moriyama Obs. in Japan, 1 in MPEC 2007-U69 -- P/2007 H1
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2007-U55, 2007-U60 & 2007-U69 -- 2007 UH6, P/2007 R1, 136P, 116P
J93Mt. Tuffley Obs. in England, 2 in MPEC 2007-U69 -- 93P, 50P
J78Murcia Obs. in Spain, 1 in MPEC 2007-U69 -- 93P
D81Nagano Obs., 3 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, 50P, 8P
J47Nazaret Obs. in Spain, 6 in MPEC 2007-U69 -- P/2007 H1, 188P, 117P, 93P, 17P, 8P
A24New Millennium Obs. in Italy, 16 in MPECs 2007-U55 & 2007-U69 -- 2007 TG15, C/2007 E1, C/2006 W3, C/2006 S3, C/2006 M1, 137084, 191P, 188P, 139P, 117P, 113P, 110P, 93P, 50P, 29P, 17P
423North Ryde Obs. in New South Wales, 6 in MPECs 2007-U55, 2007-U59, 2007-U63 & 2007-U69 -- P/2007 R4, C/2007 Q3, C/2006 U6, C/2006 Q1, 3753, 46P
224Ottmarsheim Obs. in France, 1 in MPEC 2007-U69 -- 93P
J52Pinsoro Obs. in Spain, 7 in MPEC 2007-U69 -- 191P, 117P, 93P, 74P, 50P, 29P, 17P
H06RAS Obs. Mayhill in New Mexico, 2 in MPEC 2007-U69 -- C/2006 S5, 8P
473Remanzacco Obs. in Italy, 2 in MPECs 2007-U60 & 2007-U69 -- P/2007 R1, 93P
619Sabadell Obs. in Spain, 1 in MPEC 2007-U69 -- C/2006 OF2
204Schiaparelli Obs. in Italy, 14 in MPECs 2007-U65, 2007-U68 & 2007-U69 -- P/2007 T4, C/2007 S2, C/2007 E1, C/2006 S5, C/2006 M1, P/2004 F3, 191P, 139P, 128P, 110P, 74P, 44P, 29P, 17P
D21Shenton Park Obs. in Western Australia, 3 in MPEC 2007-U55 -- 2007 UV3, 2007 UT3, 2007 UT
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2007-U55, 2007-U63, 2007-U66 & 2007-U69 -- 2007 TD71, 2007 TA19, C/2007 T1, P/2007 R4, C/2006 U6, C/2006 K1, 46P
510Siegen Obs. in Germany, 4 in MPEC 2007-U69 -- C/2006 OF2, 93P, 50P, 8P
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2007-U56 & 2007-U58 -- 2007 UO6, P/2007 Q2
A97Stammersdorf Obs. in Austria, 1 in MPEC 2007-U66 -- C/2007 T1
D70Tosa Obs., 3 in MPECs 2007-U66 & 2007-U69 -- C/2007 T1, C/2006 OF2, 93P
B39Tradate Obs. in Italy, 2 in MPEC 2007-U69 -- 93P, 50P
A82Trieste Obs., 1 in MPEC 2007-U62 -- P/2007 R3
J70Vega del Thader Obs. in Spain, 1 in MPEC 2007-U66 -- C/2007 T1
H47Vicksburg Obs. in Mississippi, 3 in MPEC 2007-U69 -- C/2006 OF2, 93P, 50P
138Village-Neuf Obs. in France, 1 in MPEC 2007-U69 -- 93P

Impact Risk Monitoring  on 23 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 UO6JPL Sentry16062010-2104151.7e-05-5.65-6.140JPL: "Analysis based on 9 observations spanning 1.9989 days (2007-Oct-21.36454 to 2007-Oct-23.36341)." Diameter approximately 0.012 km. from mean, weighted H=27.3.
2007 UD6NEODyS16062058-2090481.1e-04-5.87-6.180NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2007/10/20.296 to 2007/10/22.301."
JPL Sentry14132058-2098501.1e-04-5.87-6.200JPL: "Analysis based on 39 observations spanning 2.0041 days (2007-Oct-20.29569 to 2007-Oct-22.299793)." Diameter approximately 0.007 km. from mean, weighted H=28.4.
2007 UT3NEODyS20002022-2080207.42e-06-5.08-5.130NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2007/10/19.300 to 2007/10/22.705."
JPL Sentry14132022-2102227.7e-06-5.09-5.160JPL: "Analysis based on 16 observations spanning 3.4053 days (2007-Oct-19.2989 to 2007-Oct-22.70417)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
2007 TD71NEODyS14142060-2087141.95e-07-3.22-3.620NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2007/10/13.703 to 2007/10/22.707."
JPL Sentry14132063-208171.7e-07-3.29-3.660JPL: "Analysis based on 21 observations spanning 9.0041 days (2007-Oct-13.70201 to 2007-Oct-22.70612)." Diameter approximately 0.720 km. from mean, weighted H=18.4.

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 23 October '07

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

2000Noted that NEODyS has updated its 2007 UT3 risk assessment - see above
1746Grabbed MPEC 2007-U69 - Observations of Comets - see above
1659Grabbed MPEC 2007-U58 - Comet P/2007 Q2 (Gilmore) - see above
Grabbed MPEC 2007-U59 - Comet C/2007 Q3 (Siding Spring) - see above
Grabbed MPEC 2007-U60 - Comet P/2007 R1 (Larson) - see above
Grabbed MPEC 2007-U61 - Comet P/2007 R2 (Gibbs) - see above
Grabbed MPEC 2007-U62 - Comet P/2007 R3 (Gibbs) - see above
Grabbed MPEC 2007-U63 - Comet P/2007 R4 (Garradd) - see above
Grabbed MPEC 2007-U64 - Comet P/2007 S1 (Zhao) - see above
Grabbed MPEC 2007-U65 - Comet C/2007 S2 (Lemmon) - see above
Grabbed MPEC 2007-U66 - Comet C/2007 T1 (McNaught) - see above
Grabbed MPEC 2007-U67 - Comet P/2007 T2 (Kowalski) - see above
Grabbed MPEC 2007-U68 - Comet P/2007 T4 (Gibbs) - see above
1606Noted that JPL Sentry has posted 2007 UO6 as an impact risk - see above
1605Noted that NEODyS has posted 2007 UD6 as an impact risk - see above
1414Noted that NEODyS has updated its 2007 TD71 risk assessment - see above
Grabbed MPEC 2007-U55 - Daily Orbit Update - see above
1413Noted that JPL Sentry has updated its 2007 TD71 risk assessment - see above
Noted that JPL Sentry has updated its 2007 UD6 risk assessment - see above
Noted that JPL Sentry has updated its 2007 UT3 risk assessment - see above
Grabbed MPEC 2007-U56 - 2007 UO6 - see above
1408Grabbed MPEC 2007-U57 - 2007 UP6 - see above