Contents  on 22 October '09

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 22 October '09

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and five updated listings. All of these were "one nighters." So far The Tracking News has counted a total of twelve listings on the NEOCP at some point 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 22 October '09

Minor Planet Electronic Circulars

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


MPEC 2009-U67 - "16:42 UT" - Comet C/2009 U3 (Hill)


MPEC 2009-U66 - "15:16 UT" - 2009 UK14


MPEC 2009-U65 - "14:47 UT" - 2009 UJ14


MPEC 2009-U64 - "14:40 UT" - 2009 UH14


MPEC 2009-U63 - "14:30 UT" - 2008 GE1


<< DOU on 22 Oct. '09 >>  MPEC 2009-U62 - "06:11 UT" - Daily Orbit Update

Observers  on 22 October '09

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 10 in MPEC 2009-U62 -- 2009 UK, 2009 TN8, 2009 TL4, 2009 TF10, 2009 SW, 2009 ST103, 2009 SP, 2009 SO103, 2009 SM, 2009 RM
300Bisei Spaceguard Center in Japan, 2 in MPECs 2009-U62 & 2009-U67 -- 2009 UJ5, C/2009 U3
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2009-U62, 2009-U64 & 2009-U67 -- 2009 UH14, C/2009 U3, 2009 SV171, 2009 SS104, 2009 KM7, 2007 VH186, 5587, 3288
F65Faulkes Telescope North in Hawaii, 1 in MPEC 2009-U67 -- C/2009 U3
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 2 in MPECs 2009-U62 & 2009-U65 -- 2009 UJ5, 2009 UJ14
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2009-U67 -- C/2009 U3
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2009-U62 -- 2009 ST19, 2009 RN, 2009 KC3, 2005 RQ6
704LINEAR in New Mexico, 1 in MPEC 2009-U62 -- 2009 UK
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPEC 2009-U62 -- 2009 TS7, 2009 TC8, 2000 GD147
900Moriyama Obs. in Japan, 2 in MPECs 2009-U62 & 2009-U67 -- 2009 UJ5, C/2009 U3
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2009-U62, 2009-U64, 2009-U65, 2009-U66 & 2009-U67 -- 2009 UK14, 2009 UJ14, 2009 UH14, C/2009 U3, 218017, 144922, 138815
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-U67 -- C/2009 U3
D21Shenton Park Obs. in Western Australia, 2 in MPEC 2009-U62 -- 2009 UU1, 2009 UD
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2009-U62 -- 2009 UN3, 2002 FB6
071Smolyan Obs. in Bulgaria, 3 in MPEC 2009-U62 -- 2009 ST19, 2009 NA, 2009 KC3
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2009-U62 -- 2009 UL, 2009 UF2, 2009 UD2, 2009 TC8, 2009 SU19, 2009 SB170, 2009 RA4
926Tenagra II Obs. in Arizona, 6 in MPECs 2009-U62, 2009-U63, 2009-U64, 2009-U65, 2009-U66 & 2009-U67 -- 2009 UK14, 2009 UJ14, 2009 UH14, C/2009 U3, 2009 TG10, 2008 GE1
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-U62 -- 433
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2009-U62 -- 88263
G56Walnut Creek Obs. in northern California, 2 in MPEC 2009-U62 -- 2009 UO3, 2009 TK12
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 October '09

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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
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
2009 UK14JPL Sentry19372016-2105209.7e-09-8.38-8.660JPL: "Analysis based on 19 observations spanning .14612 days (2009-Oct-22.2467 to 2009-Oct-22.39282)." Diameter approximately 0.020 km. from mean, weighted H=26.1.
2009 UN3JPL Sentry14042026-2108748.1e-08-3.33-4.270JPL: "Analysis based on 13 observations spanning 2.1089 days (2009-Oct-19.59856 to 2009-Oct-21.70747)." Diameter approximately 0.921 km. from mean, weighted H=17.8.
NEODyS14042013-20901661.43e-07-2.68-3.110NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/10/19.599 to 2009/10/21.708."
2009 UF2JPL Sentry14042052-206824.1e-09-8.10-8.370JPL: "Analysis based on 16 observations spanning 3.0489 days (2009-Oct-18.22265 to 2009-Oct-21.27154)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
NEODyS14042037-206835.45e-09-8.10-8.400NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2009/10/18.223 to 2009/10/21.272."
2009 TD17NEODyS15332039-2090607.05e-05-5.44-5.550NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/10/09.328 to 2009/10/11.330."
2009 TG10JPL Sentry1404R E M O V E DJPL: Risk listing removed at 0949 UTC.
2009 TC8JPL Sentry1404R E M O V E DJPL: Risk listing removed at 0949 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 22 October '09

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

1937Noted that JPL Sentry has posted 2009 UK14 as an impact risk - see above
1714Grabbed MPEC 2009-U67 - Comet C/2009 U3 (Hill) - see above
1533Grabbed MPEC 2009-U63 - 2008 GE1 - see above
Grabbed MPEC 2009-U64 - 2009 UH14 - see above
Grabbed MPEC 2009-U65 - 2009 UJ14 - see above
Grabbed MPEC 2009-U66 - 2009 UK14 - see above
1532Noted that NEODyS has posted 2009 TD17 as an impact risk - see above
1404Noted that JPL Sentry has removed 2009 TC8 as an impact risk - see above
Noted that JPL Sentry has removed 2009 TG10 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 UF2 risk assessment - see above
Noted that NEODyS has updated its 2009 UF2 risk assessment - see above
Noted that JPL Sentry has updated its 2009 UN3 risk assessment - see above
Noted that NEODyS has updated its 2009 UN3 risk assessment - see above
Grabbed MPEC 2009-U62 - Daily Orbit Update - see above