Contents  on 23 October '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 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 23 October '08

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

When last checked at 2358 UTC today, the Minor Planet Center's NEO 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 eleven 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 23 October '08

Minor Planet Electronic Circulars

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


MPEC 2008-U43 - "19:19 UT" - 2008 UU1


MPEC 2008-U42 - "19:17 UT" - 2008 UT1


<< DOU on 23 Oct. '08 >>  MPEC 2008-U41 - "06:11 UT" - Daily Orbit Update


MPEC 2008-U40 - "01:58 UT" - 2008 UM1

Observers  on 23 October '08

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 8 in MPEC 2008-U41 -- 2008 TC4, 2008 SX7, 2008 SU1, 2008 SH82, 2008 QT3, 2008 NU, 2008 MH1, 2008 JZ7
I77CEAMIG-REA in Brazil, 1 in MPEC 2008-U43 -- 2008 UU1
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-U41 -- 2008 TX3, 2008 TD27, 2008 SN1, 2003 OA3
F654Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-U41 -- 4179
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-U41 -- 2008 TT26
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-U41 -- 9856
J95Great Shefford Obs. in England, 2 in MPECs 2008-U41 & 2008-U42 -- 2008 UT1, 2008 TT26
715Jornada Obs. in New Mexico, 1 in MPEC 2008-U41 -- 2008 TJ157
701Junk Bond Obs. in Arizona, 1 in MPEC 2008-U41 -- 2008 UX
704LINEAR in New Mexico, 8 in MPECs 2008-U41 & 2008-U42 -- 2008 UT1, 85774, 65733, 144900, 142348, 141765, 4587, 4055
304Las Campanas Obs. in Chile, 3 in MPEC 2008-U41 -- 2008 TV25, 2008 SE85, 2008 RG98
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-U41 -- 2008 TV26
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2008-U40 & 2008-U41 -- 2008 UX, 2008 UU, 2008 UM1, 2001 SG10, 96744, 162004, 144901
J69North Obs. in England, 1 in MPEC 2008-U41 -- 2008 TT26
589Santa Lucia Stroncone Obs. in Italy, 1 in MPEC 2008-U41 -- 2008 TT26
204Schiaparelli Obs. in Italy, 7 in MPEC 2008-U41 -- 2008 TX3, 2008 TK9, 2008 TK, 2008 TF4, 2008 TE1, 2008 TD4, 2008 TC4
E12Siding Spring Survey (SSS) in New South Wales, 7 in MPECs 2008-U41 & 2008-U43 -- 2008 UU1, 2008 UC, 2008 SX7, 2005 WD1, 2003 GW, 5131, 5011
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2008-U41 -- 2006 BG, 2005 YY128, 2001 SG276, 137799, 6178
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2008-U41 -- 2008 TZ3, 2008 TR10, 2008 TJ157, 2008 TD27, 2008 TD2, 2008 RM98, 2008 QW11, 2004 TU11
H53Thompsonville Obs. in Illinois, 2 in MPEC 2008-U41 -- 16960, 1620
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-U41 -- 2008 TX3
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2008-U41 -- 2008 TV26
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 23 October '08

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
2008 UM1NEODyS14382011-203844.21e-06-7.47-7.510NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2008/10/22.395 to 2008/10/22.426."
2008 UF1NEODyS14382050-207836.43e-08-7.28-7.490NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2008/10/22.324 to 2008/10/22.457."
2008 UD1NEODyS14382010-20902118.84e-08-3.89-4.580NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2008/10/21.290 to 2008/10/22.303."
2008 UCNEODyS1437R E M O V E D-
JPL Sentry1437R E M O V E DJPL: Risk listing removed at 1028 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 23 October '08

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

2012Grabbed MPEC 2008-U42 - 2008 UT1 - see above
Grabbed MPEC 2008-U43 - 2008 UU1 - see above
1438Grabbed MPEC 2008-U41 - Daily Orbit Update - see above
1437Noted that JPL Sentry has removed 2008 UC as an impact risk - see above
Noted that NEODyS has removed 2008 UC as an impact risk - see above
Noted that NEODyS has posted 2008 UD1 as an impact risk - see above
Noted that NEODyS has posted 2008 UF1 as an impact risk - see above
Noted that NEODyS has posted 2008 UM1 as an impact risk - see above
0308Grabbed MPEC 2008-U40 - 2008 UM1 - see above