Contents  on 2 January '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 2 January '09

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of 33 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 2 January '09

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been fourteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-A19 - "21:56 UT" - 2009 AO


MPEC 2009-A18 - "18:45 UT" - Editorial Notice


MPEC 2009-A17 - "18:35 UT" - 2007 TH422, 2007 TJ422, 2007 TK422


MPEC 2009-A16 - "17:48 UT" - 2009 AN


MPEC 2009-A15 - "17:46 UT" - 2009 AM


MPEC 2009-A14 - "17:44 UT" - 2009 AL


MPEC 2009-A13 - "17:41 UT" - 2009 AK


MPEC 2009-A12 - "17:35 UT" - 2008 YZ32


MPEC 2009-A11 - "17:33 UT" - 2008 YY32


MPEC 2009-A10 - "17:30 UT" - 2008 YX32


MPEC 2009-A09 - "17:28 UT" - 2008 YW32


MPEC 2009-A08 - "17:25 UT" - 2008 YV32


MPEC 2009-A07 - "17:21 UT" - 2008 YU32


<< DOU on 2 Jan. '09 >>  MPEC 2009-A06 - "07:09 UT" - Daily Orbit Update

Observers  on 2 January '09

A total of 25 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 24 in MPECs 2009-A06 & 2009-A12 -- 2008 YZ32, 2008 YZ28, 2008 YU30, 2008 YT30, 2008 YQ27, 2008 YO27, 2008 YN27, 2008 YN2, 2008 YM27, 2008 YJ2, 2008 YH30, 2008 YG30, 2008 YG3, 2008 YG29, 2008 YG26, 2008 YF3, 2008 YF29, 2008 YE29, 2008 YD29, 2008 XB1, 2008 WL60, 2008 WB59, 2008 QT3, 1991 FB
A74Bergen-Enkheim Obs. in Germany, 3 in MPEC 2009-A06 -- 2008 YE29, 2006 AS2, 2001 DV8
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2009-A06, 2009-A10, 2009-A11 & 2009-A12 -- 2008 YZ32, 2008 YY32, 2008 YX32, 2001 WT1, 68350, 25916, 141765, 3103, 2212
448Desert Moon Obs. in New Mexico, 7 in MPECs 2009-A06, 2009-A08, 2009-A10, 2009-A12 & 2009-A13 -- 2009 AK, 2008 YZ32, 2008 YX32, 2008 YV32, 2003 YX1, 162679, 136635
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2009-A11 & 2009-A13 -- 2009 AK, 2008 YY32
J95Great Shefford Obs. in England, 1 in MPEC 2009-A19 -- 2009 AO
379Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2009-A06 -- 2008 YK2, 2008 WQ63, 2008 WL60, 2008 SH82, 2008 EV5, 2005 BC
682Kanab Obs. in Utah, 3 in MPECs 2009-A10, 2009-A14 & 2009-A15 -- 2009 AM, 2009 AL, 2008 YX32
695Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPEC 2009-A17 -- 2007 TK422, 2007 TJ422, 2007 TH422
540Linz Obs. in Austria, 1 in MPEC 2009-A06 -- 2008 XQ2
688Lowell Obs. Anderson Mesa Station in Arizona, 3 in MPEC 2009-A17 -- 2007 TK422, 2007 TJ422, 2007 TH422
H01Magdalena Ridge Obs. (MRO) in New Mexico, 11 in MPECs 2009-A06, 2009-A07, 2009-A08, 2009-A09, 2009-A10, 2009-A11, 2009-A12, 2009-A14, 2009-A16 & 2009-A19 -- 2009 AO, 2009 AN, 2009 AL, 2008 YZ32, 2008 YY32, 2008 YX32, 2008 YW32, 2008 YV32, 2008 YU32, 2008 YH30, 2008 YF30
G96Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2009-A06, 2009-A07, 2009-A08, 2009-A09, 2009-A10, 2009-A11, 2009-A12, 2009-A13, 2009-A14, 2009-A15 & 2009-A16 -- 2009 AN, 2009 AM, 2009 AL, 2009 AK, 2008 YZ32, 2008 YY32, 2008 YX32, 2008 YW32, 2008 YV32, 2008 YU32, 2008 SR, 2008 SH82, 2008 RT26, 2005 TF49, 2003 HB6, 2001 VB76, 67399, 53550, 144901, 3360
J47Nazaret Obs. in Spain, 1 in MPEC 2009-A06 -- 2008 EV5
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2009-A06 -- 2008 YN27, 2008 YK2, 2008 XV2, 2008 XE2, 2008 VK14, 2008 UC95, 2008 SQ1, 2008 EV5, 2001 FX9, 4179
D29Purple Mtn. Obs. XuYi Station (XuYi Sta.) in China, 2 in MPEC 2009-A06 -- 142348, 2368
473Remanzacco Obs. in Italy, 1 in MPEC 2009-A11 -- 2008 YY32
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2009-A11, 2009-A12 & 2009-A13 -- 2009 AK, 2008 YZ32, 2008 YY32
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-A13 -- 2009 AK
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-A06 -- 2008 UC
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-A06 -- 11405
691Spacewatch 0.9m telescope in Arizona, 9 in MPECs 2009-A06, 2009-A09 & 2009-A19 -- 2009 AO, 2008 YW32, 2008 YR27, 35396, 199801, 175706, 153220, 142348, 12923
291Spacewatch 1.8m telescope in Arizona, 27 in MPECs 2009-A06, 2009-A07, 2009-A08, 2009-A09, 2009-A10, 2009-A11, 2009-A12, 2009-A13, 2009-A14, 2009-A15 & 2009-A16 -- 2009 AN, 2009 AM, 2009 AL, 2009 AK, 2008 YZ32, 2008 YY32, 2008 YX32, 2008 YW32, 2008 YV32, 2008 YU32, 2008 YU30, 2008 YT30, 2008 YJ3, 2008 YH30, 2008 YF30, 2008 YF29, 2008 YE30, 2008 YE29, 2008 YD29, 2008 YB29, 2008 YA29, 2008 XN, 2008 WP1, 2008 UN90, 2003 RP8, 2001 VB2, 88188
611Starkenburg Obs. in Germany, 2 in MPECs 2009-A11 & 2009-A16 -- 2009 AN, 2008 YY32
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2009-A06 -- 89355, 22099
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 January '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is 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
2009 ALJPL Sentry22172045-2106211.7e-07-5.18-5.590JPL: "Analysis based on 19 observations spanning .99924 days (2009-Jan-01.29931 to 2009-Jan-02.29855)." Diameter approximately 0.162 km. from mean, weighted H=21.6.
2008 YY32JPL Sentry2217207922.0e-06-6.00-6.030JPL: "Analysis based on 37 observations spanning 2.0164 days (2008-Dec-31.42442 to 2009-Jan-02.44077)." Diameter approximately 0.030 km. from mean, weighted H=25.2.
2008 YV32JPL Sentry22172078-209472.3e-06-6.47-7.040JPL: "Analysis based on 25 observations spanning 2.0893 days (2008-Dec-31.22029 to 2009-Jan-02.30958)." Diameter approximately 0.020 km. from mean, weighted H=26.1.
2008 YU32JPL Sentry22172013-21041243.9e-07-3.30-4.010JPL: "Analysis based on 16 observations spanning 1.9936 days (2008-Dec-31.10188 to 2009-Jan-02.09545)." Diameter approximately 0.366 km. from mean, weighted H=19.8.
2008 YU30JPL Sentry22172048-209085.9e-08-6.50-6.980JPL: "Analysis based on 26 observations spanning 1.2048 days (2008-Dec-31.31333 to 2009-Jan-01.5181)." Diameter approximately 0.077 km. from mean, weighted H=23.2.
NEODyS1414208811.61e-09-8.28-8.280NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/31.314 to 2009/01/01.519."
2008 YT30JPL Sentry22172029-21081246.7e-07-3.49-4.550JPL: "Analysis based on 25 observations spanning 1.3192 days (2008-Dec-31.09054 to 2009-Jan-01.40975)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
NEODyS14142018-2088591.07e-06-3.38-3.710NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/12/31.091 to 2009/01/01.411."
2008 YH30JPL Sentry2217R E M O V E DJPL: Risk listing removed at 2205 UTC.
2008 YF30JPL Sentry2217R E M O V E DJPL: Risk listing removed at 2135 UTC.
NEODyS1414R E M O V E D-
2008 YF29JPL Sentry22172024-203977.5e-06-4.28-4.330JPL: "Analysis based on 30 observations spanning 2.0024 days (2008-Dec-30.24924 to 2009-Jan-01.25162)." Diameter approximately 0.051 km. from mean, weighted H=24.1.
NEODyS14142024-208366.85e-06-4.27-4.320NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/12/30.250 to 2009/01/01.252."
2008 YE29JPL Sentry20592058-210653.3e-08-5.40-5.710JPL: "Analysis based on 42 observations spanning 2.0070 days (2008-Dec-30.22562 to 2009-Jan-01.23259)." Diameter approximately 0.316 km. from mean, weighted H=20.2.
NEODyS1414205811.27e-09-6.67-6.670NEODyS: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2008/12/30.226 to 2009/01/01.233."

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 January '09

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

2218Grabbed MPEC 2009-A19 - 2009 AO - see above
2217Noted that JPL Sentry has updated its 2008 YF29 risk assessment - see above
Noted that JPL Sentry has removed 2008 YF30 as an impact risk - see above
Noted that JPL Sentry has removed 2008 YH30 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 YT30 risk assessment - see above
Noted that JPL Sentry has updated its 2008 YU30 risk assessment - see above
Noted that JPL Sentry has posted 2008 YU32 as an impact risk - see above
Noted that JPL Sentry has posted 2008 YV32 as an impact risk - see above
Noted that JPL Sentry has posted 2008 YY32 as an impact risk - see above
Noted that JPL Sentry has posted 2009 AL as an impact risk - see above
2059Noted that JPL Sentry has updated its 2008 YE29 risk assessment - see above
1859Grabbed MPEC 2009-A06 - Daily Orbit Update - see above
Grabbed MPEC 2009-A09 - 2008 YW32 - see above
Grabbed MPEC 2009-A10 - 2008 YX32 - see above
Grabbed MPEC 2009-A11 - 2008 YY32 - see above
Grabbed MPEC 2009-A12 - 2008 YZ32 - see above
Grabbed MPEC 2009-A13 - 2009 AK - see above
Grabbed MPEC 2009-A14 - 2009 AL - see above
Grabbed MPEC 2009-A16 - 2009 AN - see above
Grabbed MPEC 2009-A17 - 2007 TH422, 2007 TJ422, 2007 TK422 - see above
Grabbed MPEC 2009-A18 - Editorial Notice - see above
1858Grabbed MPEC 2009-A07 - 2008 YU32 - see above
Grabbed MPEC 2009-A08 - 2008 YV32 - see above
Grabbed MPEC 2009-A15 - 2009 AM - see above
1414Noted that NEODyS has updated its 2008 YE29 risk assessment - see above
Noted that NEODyS has updated its 2008 YF29 risk assessment - see above
Noted that NEODyS has removed 2008 YF30 as an impact risk - see above
Noted that NEODyS has updated its 2008 YT30 risk assessment - see above
Noted that NEODyS has updated its 2008 YU30 risk assessment - see above