Contents  on 2 January '08

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 this year 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 '08

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of 20 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 '08

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 2008-A19 - "20:52 UT" - 2007 VQ4


MPEC 2008-A18 - "18:03 UT" - 2008 AE


MPEC 2008-A17 - "18:00 UT" - 2008 AD


MPEC 2008-A16 - "16:10 UT" - 2007 YV56


MPEC 2008-A15 - "16:07 UT" - 2007 YU56


MPEC 2008-A14 - "16:04 UT" - 2007 YT56


MPEC 2008-A13 - "16:01 UT" - 2007 YS56


MPEC 2008-A12 - "15:56 UT" - 2007 YR56


MPEC 2008-A11 - "15:53 UT" - 2007 YQ56


MPEC 2008-A10 - "15:50 UT" - 2007 YP56


MPEC 2008-A09 - "15:48 UT" - 2007 YO56


MPEC 2008-A08 - "15:45 UT" - 2007 YN56


MPEC 2008-A07 - "15:41 UT" - 2007 YM56


MPEC 2008-A06 - "14:00 UT" - Comet C/2007 Y2 (McNaught)


<< DOU on 2 Jan. '08 >>  MPEC 2008-A05 - "07:08 UT" - Daily Orbit Update

Observers  on 2 January '08

A total of 34 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-A08 -- 2007 YN56
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2008-A05 -- 4450, 1620
235CAST Obs. in Italy, 2 in MPECs 2008-A11 & 2008-A17 -- 2008 AD, 2007 YQ56
I77CEAMIG-REA in Brazil, 3 in MPECs 2008-A06, 2008-A16 & 2008-A17 -- 2008 AD, 2007 YV56, C/2007 Y2
703Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2008-A05, 2008-A13, 2008-A14, 2008-A15, 2008-A16, 2008-A17 & 2008-A18 -- 2008 AE, 2008 AD, 2007 YV56, 2007 YU56, 2007 YT56, 2007 YS56, 2007 YM1, 1999 RH33, 66407, 66251, 33342, 162173, 154347, 140288, 7092, 5587, 3553, 1866
470Ceccano Obs. in Italy, 1 in MPEC 2008-A10 -- 2007 YP56
A94Cormons Obs. in Italy, 3 in MPEC 2008-A05 -- 96189, 68063, 4450
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-A05 -- 66272
448Desert Moon Obs. in New Mexico, 3 in MPECs 2008-A05 & 2008-A13 -- 2007 YS56, 2007 VR183, 2007 RT147
595Farra d'Isonzo Obs. in Italy, 8 in MPECs 2008-A08, 2008-A10, 2008-A11, 2008-A13, 2008-A15, 2008-A16, 2008-A17 & 2008-A18 -- 2008 AE, 2008 AD, 2007 YV56, 2007 YU56, 2007 YS56, 2007 YQ56, 2007 YP56, 2007 YN56
143Gnosca Obs. in Switzerland, 3 in MPECs 2008-A05, 2008-A08 & 2008-A11 -- 2007 YZ, 2007 YQ56, 2007 YN56
651Grasslands Obs. in Arizona, 3 in MPECs 2008-A08, 2008-A10 & 2008-A11 -- 2007 YQ56, 2007 YP56, 2007 YN56
A17Guidestar Obs. in Germany, 2 in MPECs 2008-A08 & 2008-A13 -- 2007 YS56, 2007 YN56
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2008-A05 -- 2007 YZ, 2005 WJ56
701Junk Bond Obs. in Arizona, 3 in MPECs 2008-A08, 2008-A10 & 2008-A11 -- 2007 YQ56, 2007 YP56, 2007 YN56
704LINEAR in New Mexico, 2 in MPECs 2008-A08 & 2008-A10 -- 2007 YP56, 2007 YN56
699LONEOS in Arizona, 1 in MPEC 2008-A11 -- 2007 YQ56
130Lumezzane Obs. in Italy, 11 in MPEC 2008-A05 -- 2007 YZ, 2007 YM1, 2007 VQ4, 90403, 66272, 33342, 170903, 170891, 153591, 136793, 10563
474Mt. John Obs. in New Zealand, 1 in MPEC 2008-A08 -- 2007 YN56
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2008-A05, 2008-A08, 2008-A09, 2008-A10, 2008-A11, 2008-A12, 2008-A13, 2008-A14, 2008-A15 & 2008-A16 -- 2007 YV56, 2007 YU56, 2007 YT56, 2007 YS56, 2007 YR56, 2007 YQ56, 2007 YP56, 2007 YO56, 2007 YN56, 2007 XJ20, 2005 XK8
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2008-A19 -- 2007 VQ4
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2008-A19 -- 2007 VQ4
A13Naef Obs. in Switzerland, 1 in MPEC 2008-A15 -- 2007 YU56
A24New Millennium Obs. in Italy, 11 in MPECs 2008-A05, 2008-A08, 2008-A11 & 2008-A13 -- 2007 YS56, 2007 YQ56, 2007 YN56, 2007 XH16, 2007 TG8, 99935, 86324, 85804, 20826, 143678, 137084
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2008-A05 -- 2007 YZ
H062Robert Hutsebaut in Belgium via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-A16 -- 2007 YV56
204Schiaparelli Obs. in Italy, 7 in MPECs 2008-A05, 2008-A08, 2008-A10, 2008-A11, 2008-A12, 2008-A13 & 2008-A16 -- 2007 YV56, 2007 YS56, 2007 YR56, 2007 YQ56, 2007 YP56, 2007 YN56, 2007 TU24
260&Rob Matson in California using the Siding Spring Digitized Sky Survey in New South Wales, 2 in MPECs 2008-A05 & 2008-A19 -- 2007 VQ4, 2007 SP6
E12Siding Spring Survey in New South Wales, 1 in MPEC 2008-A06 -- C/2007 Y2
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2008-A05, 2008-A07 & 2008-A09 -- 2007 YO56, 2007 YM56, 9172
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2008-A07, 2008-A09, 2008-A10 & 2008-A11 -- 2007 YQ56, 2007 YP56, 2007 YO56, 2007 YM56
147Suno Obs. in Italy, 1 in MPEC 2008-A08 -- 2007 YN56
6739Heath Rhoades via Table Mtn. Obs. in southern California, 1 in MPEC 2008-A08 -- 2007 YN56
247roving observer, 2 in MPECs 2008-A16 & 2008-A18 -- 2008 AE, 2007 YV56

Impact Risk Monitoring  on 2 January '08

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 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
2008 AEJPL Sentry21312017-2107188.2e-09-5.25-5.790JPL: "Analysis based on 12 observations spanning .68896 days (2008-Jan-01.43123 to 2008-Jan-02.12019)." Diameter approximately 0.400 km. from mean, weighted H=19.7.
2007 YV56JPL Sentry2009207525.1e-10-7.24-7.460JPL: "Analysis based on 29 observations spanning 1.7142 days (2007-Dec-31.5148 to 2008-Jan-02.22898)." Diameter approximately 0.220 km. from mean, weighted H=20.9.
2007 YS56JPL Sentry20092084-209541.6e-07-7.37-7.410JPL: "Analysis based on 20 observations spanning 1.6607 days (2007-Dec-31.24562 to 2008-Jan-01.90636)." Diameter approximately 0.025 km. from mean, weighted H=25.6.
2007 YM56JPL Sentry2320201211.0e-10-7.65-7.650JPL: "Analysis based on 11 observations spanning 2.0593 days (2007-Dec-30.29391 to 2008-Jan-01.35318)." Diameter approximately 0.130 km. from mean, weighted H=22.0.

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 '08

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

2320Noted that JPL Sentry has posted 2007 YM56 as an impact risk - see above
2131Noted that JPL Sentry has posted 2008 AE as an impact risk - see above
Grabbed MPEC 2008-A19 - 2007 VQ4 - see above
2009Noted that JPL Sentry has posted 2007 YS56 as an impact risk - see above
Noted that JPL Sentry has posted 2007 YV56 as an impact risk - see above
1810Grabbed MPEC 2008-A17 - 2008 AD - see above
Grabbed MPEC 2008-A18 - 2008 AE - see above
1631Grabbed MPEC 2008-A13 - 2007 YS56 - see above
Grabbed MPEC 2008-A14 - 2007 YT56 - see above
Grabbed MPEC 2008-A15 - 2007 YU56 - see above
Grabbed MPEC 2008-A16 - 2007 YV56 - see above
1600Grabbed MPEC 2008-A07 - 2007 YM56 - see above
Grabbed MPEC 2008-A08 - 2007 YN56 - see above
Grabbed MPEC 2008-A09 - 2007 YO56 - see above
Grabbed MPEC 2008-A10 - 2007 YP56 - see above
Grabbed MPEC 2008-A11 - 2007 YQ56 - see above
Grabbed MPEC 2008-A12 - 2007 YR56 - see above
1433Grabbed MPEC 2008-A06 - Comet C/2007 Y2 (McNaught) - see above
1400Grabbed MPEC 2008-A05 - Daily Orbit Update - see above