Contents  on 3 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 3 November '11

The MPC's NEO Confirmation Page has 15 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fifteen objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 27 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 3 November '11

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2011-V16 - "15:27 UT" - 2011 UF305


<< DOU on 3 Nov. '11 >>  MPEC 2011-V15 - "06:06 UT" - Daily Orbit Update

Observers  on 3 November '11

A total of 20 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 23 in MPEC 2011-V15 -- 2011 UZ255, 2011 UY114, 2011 UW255, 2011 US63, 2011 UP20, 2011 UN20, 2011 UM169, 2011 UJ169, 2011 UH20, 2011 UG256, 2011 UF256, 2011 UD, 2011 UA193, 2011 UA, 2011 TN9, 2011 TG2, 2011 TA4, 2011 SP68, 2011 SL102, 2011 RR12, 2011 RF, 2011 OV4, 2011 KN9
703Catalina Sky Survey (CSS) in Arizona, 10 in MPEC 2011-V15 -- 2007 VQ4, 2006 SQ78, 2004 RJ84, 85709, 53110, 267494, 170502, 169675, 16816, 162273
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 7 in MPEC 2011-V15 -- 2011 UZ275, 2011 UY255, 2011 UM169, 2011 UA193, 2011 SZ15, 2011 QF23, 2011 MW2
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2011-V15 -- 154302
448Desert Moon Obs. in New Mexico, 7 in MPEC 2011-V15 -- 2011 UW158, 2011 US63, 2011 UL147, 2011 UA, 2011 TN9, 39565, 3988
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPEC 2011-V15 -- 2011 UU106, 2011 US63, 2011 UG256
355Hadano Obs. in Japan, 10 in MPEC 2011-V15 -- 2011 TN9, 2011 SR69, 2011 SL102, 2011 RR12, 2008 UX, 2002 QE7, 297418, 219071, 20826, 3200
246KLENOT in the Czech Republic, 3 in MPEC 2011-V15 -- 2011 UZ255, 2011 UW158, 2011 UJ169
046Klet Obs. in the Czech Republic, 5 in MPEC 2011-V15 -- 2011 UU158, 2011 TN9, 2011 SR69, 2011 RR12, 2008 UX
704LINEAR in New Mexico, 15 in MPECs 2011-V15 & 2011-V16 -- 2011 UG256, 2011 UF305, 2011 SR69, 2011 MO4, 2001 UE5, 37336, 267337, 170502, 162433, 162273, 154302, 138524, 3988, 2212, 1943
C01Lohrmann Obs. in Germany, 3 in MPEC 2011-V15 -- 283460, 219071, 154302
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPEC 2011-V15 -- 2011 UJ169, 2009 DO111, 2006 SW5, 2006 SV134, 2002 KH3, 162173, 6053
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2011-V15 -- 2011 UT
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2011-V15 -- 2011 SR69, 2011 OQ5, 2011 KF4, 1990 UA
J52Pinsoro Obs. in Spain, 1 in MPEC 2011-V15 -- 96315
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2011-V16 -- 2011 UF305
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2011-V15 -- 2011 UZ255
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2011-V15 -- 2011 EF17, 162273
291Spacewatch 1.8m telescope in Arizona, 21 in MPECs 2011-V15 & 2011-V16 -- 2011 UY63, 2011 UX63, 2011 UX192, 2011 UW114, 2011 UV63, 2011 UU20, 2011 UU158, 2011 UT20, 2011 US91, 2011 US63, 2011 UR63, 2011 UM147, 2011 UK10, 2011 UJ10, 2011 UF305, 2011 UB64, 2011 UA276, 2011 UA131, 2011 TN9, 2011 SG189, 2011 SE248
B18Terskol Obs. in Russia, 1 in MPEC 2011-V16 -- 2011 UF305
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 November '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 UE305NEODyS15322062-206211.74e-11-8.73-8.730NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2011-10-30.465 to 2011-11-01.528."
JPL Sentry01332019-2111949.1e-08-5.16-6.210JPL: "Analysis based on 14 observations spanning 2.0629 days (2011-Oct-30.46441 to 2011-Nov-01.52727)." Diameter approximately 0.183 km. from mean, weighted H=21.3.
2011 UZ255JPL Sentry15322063-210539.4e-06-4.31-4.320JPL: "Analysis based on 48 observations spanning 3.5980 days (2011-Oct-30.44574 to 2011-Nov-03.04378)." Diameter approximately 0.070 km. from mean, weighted H=23.4.
NEODyS15322066-208931.1e-05-4.24-4.260NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-11-03.045."
2011 UM169JPL Sentry15322098-2107196.1e-05-4.42-4.690JPL: "Analysis based on 34 observations spanning 5.9295 days (2011-Oct-27.37573 to 2011-Nov-02.30525)." Diameter approximately 0.034 km. from mean, weighted H=25.0.
2011 UW158JPL Sentry20332015-21111015.0e-05-1.88-2.201JPL: "Analysis based on 51 observations spanning 8.6082 days (2011-Oct-25.4186 to 2011-Nov-03.02677)." Diameter approximately 0.434 km. from mean, weighted H=19.5.
NEODyS15322044-2090212.67e-05-2.03-2.270NEODyS: "Based on 51 optical observations (of which 2 are rejected as outliers) from 2011-10-25.419 to 2011-11-03.028."
2011 UR63JPL Sentry1532211031.2e-07-7.56-7.770JPL: "Analysis based on 28 observations spanning 12.128 days (2011-Oct-21.25408 to 2011-Nov-02.38218)." Diameter approximately 0.024 km. from mean, weighted H=25.7.
2011 UTJPL Sentry15322034-210984.4e-06-5.83-6.370JPL: "Analysis based on 73 observations spanning 11.862 days (2011-Oct-17.41107 to 2011-Oct-29.27325)." Diameter approximately 0.024 km. from mean, weighted H=25.7.

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 3 November '11

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

2033Noted that JPL Sentry has updated its 2011 UW158 risk assessment - see above
1532Noted that NEODyS has posted 2011 UE305 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UM169 risk assessment - see above
Noted that JPL Sentry has reposted 2011 UR63 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 UT risk assessment - see above
Noted that NEODyS has updated its 2011 UW158 risk assessment - 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-V15 - Daily Orbit Update - see above
Grabbed MPEC 2011-V16 - 2011 UF305 - see above
0133Noted that JPL Sentry has posted 2011 UE305 as an impact risk - see above