Contents  on 2 November '11

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 2 November '11

The MPC's NEO Confirmation Page has 12 listings

When last checked at 2301 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had twelve objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 24 listings on the NEOCP 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 2 November '11

Minor Planet Electronic Circulars

As of last check at 2301 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2011-V14 - "22:23 UT" - 2011 UE305


MPEC 2011-V13 - "21:14 UT" - Comet P/2011 V1 (Boattini)


MPEC 2011-V12 - "17:10 UT" - 2011 VB


MPEC 2011-V11 - "17:07 UT" - 2011 VA


MPEC 2011-V10 - "17:05 UT" - 2011 UC292


MPEC 2011-V09 - "10:33 UT" - 2011 GN44


<< DOU on 2 Nov. '11 >>  MPEC 2011-V08 - "06:06 UT" - Daily Orbit Update

Observers  on 2 November '11

A total of 33 observers appear in today's MPECs.

CodeObserver / observatory
G53Alder Springs Obs. in northern California, 1 in MPEC 2011-V08 -- 2011 UD21
H21Astronomical Research Obs. Westfield in Illinois, 29 in MPECs 2011-V08, 2011-V11 & 2011-V12 -- 2011 VB, 2011 VA, 2011 UZ255, 2011 UY192, 2011 UX255, 2011 UX192, 2011 UW255, 2011 UW158, 2011 UV158, 2011 UU, 2011 US91, 2011 US63, 2011 UP63, 2011 UH169, 2011 UD, 2011 UC190, 2011 UB131, 2011 UA193, 2011 TG2, 2011 SQ32, 2011 SQ12, 2011 SO25, 2011 SM120, 2011 SM102, 2011 SF25, 2011 SF108, 2011 RZ, 2011 QH21, 2004 PJ2
565Bassano Bresciano Obs. in Italy, 1 in MPEC 2011-V08 -- 297418
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2011-V08 -- 153271
703Catalina Sky Survey (CSS) in Arizona, 19 in MPEC 2011-V08 -- 2011 UU106, 2011 US63, 2011 SE108, 2007 WU4, 2002 QE7, 2001 SF286, 85713, 54071, 39572, 283460, 16834, 162980, 154330, 138883, 13651, 8035, 5131, 4183, 3691
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPECs 2011-V08 & 2011-V09 -- 2011 UY255, 2011 UM169, 2011 UB64, 2011 UA193, 2011 SS67, 2011 GN44, 2011 GD62, 2011 FZ2, 2009 AM15
448Desert Moon Obs. in New Mexico, 9 in MPEC 2011-V08 -- 2011 UD115, 2011 TG2, 2011 SU232, 2011 RR12, 2011 QF14, 2011 MO4, 2010 LJ14, 162421, 154302
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 4 in MPEC 2011-V08 -- 2011 UZ255, 2011 UW255, 2011 UF256, 2011 UD256
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 2 in MPEC 2011-V08 -- 2006 SQ78, 154330
157Frasso Sabino Obs. in Italy, 3 in MPEC 2011-V08 -- 2011 UU106, 2011 UD115, 2011 RF
355Hadano Obs. in Japan, 1 in MPEC 2011-V08 -- 2006 SQ78
B86Hagen Obs. in Germany, 1 in MPEC 2011-V08 -- 2011 UG256
379Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2011-V08 -- 2011 SR69, 2004 JO2, 2003 FH, 163081, 7341, 3988
H15ISON-NM Obs. in New Mexico, 2 in MPEC 2011-V08 -- 2011 UU106, 99799
046Klet Obs. in the Czech Republic, 3 in MPEC 2011-V08 -- 2011 UZ275, 2011 UU106, 2011 SQ12
704LINEAR in New Mexico, 22 in MPEC 2011-V08 -- 2011 UZ255, 2011 UG256, 2011 SL102, 2011 OV4, 2008 UX, 2004 QJ7, 2001 UE5, 1991 TF3, 90075, 88188, 42286, 275545, 20086, 162269, 154302, 138524, 136923, 6050, 3988, 3352, 2201, 1627
900Moriyama Obs. in Japan, 1 in MPEC 2011-V08 -- 2011 UZ275
G96Mt. Lemmon Survey (MLS) in Arizona, 17 in MPECs 2011-V08, 2011-V10, 2011-V11, 2011-V12, 2011-V13 & 2011-V14 -- 2011 VB, 2011 VA, P/2011 V1, 2011 UZ114, 2011 UU106, 2011 UQ20, 2011 UE305, 2011 UC292, 2011 UA115, 2011 TN9, 2011 OA, 2011 GA55, 2009 VO24, 2005 BE2, 2002 AA, 190166, 172974
A13Naef Obs. in Switzerland, 1 in MPEC 2011-V08 -- 2011 UU106
089Nikolaev Obs. in the Ukraine, 10 in MPEC 2011-V08 -- 2011 TN9, 2011 SR69, 2003 FH, 1990 UA, 96315, 85818, 37336, 32906, 24475, 16816
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2011-V08 -- 190208, 155110, 137799
D29Purple Mtn. Obs. Xuyi Station in China, 3 in MPEC 2011-V08 -- 2011 SR69, 2002 QE7, 2201
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-V13 -- P/2011 V1
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2011-V08 -- 2011 UY255
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2011-V08 & 2011-V12 -- 2011 VB, 2011 UU106
204Schiaparelli Obs. in Italy, 5 in MPEC 2011-V08 -- 2011 UU106, 2011 UT20, 2011 UQ91, 2011 UH10, 2000 SH8
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2011-V08 -- 2011 FZ2, 54789
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2011-V08 -- 2011 UU20
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2011-V08 -- 2011 LJ19, 2006 WW1, 52768, 285179, 1943
291Spacewatch 1.8m telescope in Arizona, 29 in MPECs 2011-V08, 2011-V10, 2011-V12, 2011-V13 & 2011-V14 -- 2011 VB, P/2011 V1, 2011 UZ255, 2011 UX114, 2011 UW158, 2011 UW114, 2011 UV63, 2011 UU20, 2011 UU158, 2011 UU, 2011 UT91, 2011 UT20, 2011 UP91, 2011 UM147, 2011 UL21, 2011 UL169, 2011 UK10, 2011 UH169, 2011 UG256, 2011 UF21, 2011 UE305, 2011 UC292, 2011 UB64, 2011 UA131, 2011 SE248, 2010 OF101, 2010 FQ, 2007 DZ40, 2006 OT9
B18Terskol Obs. in Russia, 2 in MPECs 2011-V10 & 2011-V13 -- P/2011 V1, 2011 UC292
A48Verona Obs. in Italy, 1 in MPEC 2011-V08 -- 2011 SR69
I15Wishing Star Obs. in Rhode Island, 6 in MPEC 2011-V08 -- 2011 SR69, 2011 SQ12, 2011 OQ5, 2011 KF4, 2008 UX, 1990 UA
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2320 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 CLOMON2 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
2011 UZ255JPL Sentry16342063-210548.6e-06-4.36-4.360JPL: "Analysis based on 37 observations spanning 1.9309 days (2011-Oct-30.44574 to 2011-Nov-01.37662)." Diameter approximately 0.070 km. from mean, weighted H=23.4.
NEODyS16342066-208951.13e-05-4.23-4.250NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-11-01.377."
2011 UW255NEODyS1634R E M O V E D-
JPL Sentry1634R E M O V E DJPL: Risk listing removed at 1135 UTC.
2011 UA193NEODyS1634R E M O V E D-
JPL Sentry1634R E M O V E DJPL: Risk listing removed at 1132 UTC.
2011 UX192NEODyS1634R E M O V E D-
2011 UM169JPL Sentry16342090-2107195.6e-05-4.45-4.760JPL: "Analysis based on 27 observations spanning 4.7750 days (2011-Oct-27.37573 to 2011-Nov-01.15075)." Diameter approximately 0.034 km. from mean, weighted H=25.0.
2011 UL169JPL Sentry16342057-207351.3e-05-6.51-6.570JPL: "Analysis based on 26 observations spanning 3.9809 days (2011-Oct-27.2919 to 2011-Oct-31.27277)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS16342057-206651.2e-05-6.54-6.590NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2011-10-27.293 to 2011-10-31.274."
2011 UW158JPL Sentry16342015-21111772.7e-05-1.94-2.290JPL: "Analysis based on 44 observations spanning 6.9757 days (2011-Oct-25.4186 to 2011-Nov-01.39432)." Diameter approximately 0.439 km. from mean, weighted H=19.4.
NEODyS16342015-2085141.07e-05-1.82-1.910NEODyS: "Based on 44 optical observations (of which 2 are rejected as outliers) from 2011-10-25.419 to 2011-11-01.395."
2011 UV158NEODyS1634R E M O V E D-
JPL Sentry1634R E M O V E DJPL: Risk listing removed at 1215 UTC.
2011 UL21JPL Sentry16342035-210941.4e-08-3.00-3.180JPL: "Analysis based on 87 observations spanning 15.038 days (2011-Oct-17.48272 to 2011-Nov-01.52034)." Diameter approximately 2.500 km. from mean, weighted H=15.7.
NEODyS16342035-206531.68e-09-3.94-4.040NEODyS: "Based on 87 optical observations (of which 0 are rejected as outliers) from 2011-10-17.483 to 2011-11-01.521."
2011 UD21JPL Sentry1634R E M O V E DJPL: Risk listing removed at 1056 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 2 November '11

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

2301Grabbed MPEC 2011-V14 - 2011 UE305 - see above
2214Grabbed MPEC 2011-V13 - Comet P/2011 V1 (Boattini) - see above
1735Grabbed MPEC 2011-V10 - 2011 UC292 - see above
Grabbed MPEC 2011-V11 - 2011 VA - see above
Grabbed MPEC 2011-V12 - 2011 VB - see above
1634Noted that JPL Sentry has removed 2011 UA193 as an impact risk - see above
Noted that NEODyS has removed 2011 UA193 as an impact risk - see above
Noted that JPL Sentry has removed 2011 UD21 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UL169 risk assessment - see above
Noted that NEODyS has updated its 2011 UL169 risk assessment - see above
Noted that JPL Sentry has updated its 2011 UL21 risk assessment - see above
Noted that NEODyS has updated its 2011 UL21 risk assessment - see above
Noted that JPL Sentry has updated its 2011 UM169 risk assessment - see above
Noted that JPL Sentry has removed 2011 UV158 as an impact risk - see above
Noted that NEODyS has removed 2011 UV158 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UW158 risk assessment - see above
Noted that NEODyS has updated its 2011 UW158 risk assessment - see above
Noted that JPL Sentry has removed 2011 UW255 as an impact risk - see above
Noted that NEODyS has removed 2011 UW255 as an impact risk - see above
Noted that NEODyS has removed 2011 UX192 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UZ255 risk assessment - see above
Noted that NEODyS has updated its 2011 UZ255 risk assessment - see above
Grabbed MPEC 2011-V08 - Daily Orbit Update - see above
Grabbed MPEC 2011-V09 - 2011 GN44 - see above