Contents  on 25 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 25 October '09

The MPC's NEO Confirmation Page has 6 listings: 2 new, 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and four updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of 21 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 25 October '09

Minor Planet Electronic Circulars

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


MPEC 2009-U101 - "23:00 UT" - 2009 UZ19


MPEC 2009-U100 - "22:53 UT" - Comet C/2009 U5 (Grauer)


MPEC 2009-U99 - "22:50 UT" - 2009 UY19


MPEC 2009-U98 - "22:47 UT" - 2009 UX19


MPEC 2009-U97 - "22:44 UT" - 2009 UW19


MPEC 2009-U96 - "22:41 UT" - 2009 UV19


MPEC 2009-U95 - "22:36 UT" - 2009 UU19


MPEC 2009-U94 - "22:33 UT" - 2009 UT19


MPEC 2009-U93 - "22:30 UT" - 2009 US19


MPEC 2009-U92 - "17:04 UT" - 2004 RV2


<< DOU on 25 Oct. '09 >>  MPEC 2009-U91 - "06:09 UT" - Daily Orbit Update


MPEC 2009-U90 - "00:51 UT" - 2009 UE19


MPEC 2009-U89 - "00:48 UT" - 2009 UD19

Observers  on 25 October '09

A total of 33 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2009-U91 -- 2009 UO3
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2009-U91 -- 2009 TA1, 2009 ST19, 2005 RQ6
J02Busot Obs., 1 in MPEC 2009-U91 -- 30825
160Castelmartini Obs. in Italy, 2 in MPEC 2009-U91 -- 2009 SM103, 162181
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2009-U89, 2009-U90, 2009-U91, 2009-U93 & 2009-U99 -- 2009 UY19, 2009 UX17, 2009 US19, 2009 UE19, 2009 UD19, 2009 SV171, 2001 UW16, 218017, 217683, 162181, 152560
G58Chabot Obs. in northern California, 1 in MPEC 2009-U93 -- 2009 US19
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2009-U91 & 2009-U93 -- 2009 US19, 1998 MR24
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-U99 -- 2009 UY19
143Gnosca Obs. in Switzerland, 1 in MPEC 2009-U93 -- 2009 US19
J95Great Shefford Obs. in England, 8 in MPECs 2009-U89, 2009-U90, 2009-U91, 2009-U93, 2009-U97, 2009-U99 & 2009-U101 -- 2009 UZ19, 2009 UY19, 2009 UW19, 2009 US19, 2009 UO3, 2009 UE19, 2009 UD19, 2009 UC19
A17Guidestar Obs. in Germany, 2 in MPECs 2009-U93 & 2009-U99 -- 2009 UY19, 2009 US19
B86Hagen Obs. in Germany, 1 in MPEC 2009-U93 -- 2009 US19
704LINEAR in New Mexico, 13 in MPECs 2009-U91, 2009-U93 & 2009-U101 -- 2009 UZ19, 2009 US19, 2009 TK8, 2009 TK12, 2006 UR, 2004 VA15, 185716, 17511, 162273, 152560, 143678, 5646, 2212
B33Libbiano Obs. in Italy, 3 in MPECs 2009-U91, 2009-U99 & 2009-U100 -- 2009 UY19, 2009 UE19, C/2009 U5
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2009-U89, 2009-U90, 2009-U93, 2009-U94, 2009-U95, 2009-U96, 2009-U97 & 2009-U100 -- 2009 UW19, 2009 UV19, 2009 UU19, 2009 UT19, 2009 US19, 2009 UE19, 2009 UD19, C/2009 U5
B28Mandi Obs. in Italy, 1 in MPEC 2009-U93 -- 2009 US19
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2009-U91, 2009-U93, 2009-U95, 2009-U96, 2009-U97 & 2009-U100 -- 2009 UW19, 2009 UV19, 2009 UU19, 2009 US19, 2009 UB19, C/2009 U5, 99907, 96536, 37638, 171486, 16816
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2009-U91 -- 2009 TK8, 2009 TK12, 2009 SF2, 2009 KC3, 2005 RQ6, 1999 HY1
941Pla D'Arguines Obs. in Spain, 1 in MPEC 2009-U91 -- 2001 UW16
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 2 in MPECs 2009-U98 & 2009-U99 -- 2009 UY19, 2009 UX19
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-U98 -- 2009 UX19
473Remanzacco Obs. in Italy, 2 in MPECs 2009-U89 & 2009-U91 -- 2009 UD19, 2009 UC19
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-U93 -- 2009 US19
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-U100 -- C/2009 U5
B74Santa Maria de Montmagastrell Obs. in Spain, 4 in MPEC 2009-U91 -- 2009 TA1, 2009 ST19, 2009 RN, 2009 NH
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-U93 -- 2009 US19
E12Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2009-U91 & 2009-U98 -- 2009 UZ17, 2009 UY17, 2009 UX19, 2009 UN3, 2009 HD21
587Sormano Obs. in Italy, 2 in MPECs 2009-U93 & 2009-U99 -- 2009 UY19, 2009 US19
291Spacewatch 1.8m telescope in Arizona, 19 in MPECs 2009-U91, 2009-U93, 2009-U94, 2009-U96 & 2009-U97 -- 2009 UW19, 2009 UV19, 2009 UT19, 2009 US19, 2009 UM1, 2009 UF2, 2009 UD2, 2009 TV4, 2009 TS7, 2009 TC8, 2009 SW171, 2009 SS104, 2009 SQ104, 2009 SB, 2009 RZ3, 2009 RV1, 2005 AT42, 2001 BP61, 1999 AJ39
611Starkenburg Obs. in Germany, 2 in MPECs 2009-U93 & 2009-U99 -- 2009 UY19, 2009 US19
926Tenagra II Obs. in Arizona, 7 in MPECs 2009-U91, 2009-U92, 2009-U94, 2009-U97 & 2009-U100 -- 2009 UX17, 2009 UW19, 2009 UT19, 2009 UQ5, C/2009 U5, 2009 SX1, 2004 RV2
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-U91 -- 2009 UV18
C00Velikie Luki Obs. in Russia, 1 in MPEC 2009-U91 -- 2009 TK8
A48Verona Obs. in Italy, 2 in MPEC 2009-U91 -- 2009 UQ, 2009 UO3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 October '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.
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 UW18NEODyS15392011-2087901.27e-08-4.64-5.170NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2009/10/23.346 to 2009/10/24.423."
2009 UV18JPL Sentry17022016-2108902.2e-07-2.14-3.100JPL: "Analysis based on 36 observations spanning 2.0650 days (2009-Oct-22.39951 to 2009-Oct-24.46451)." Diameter approximately 2.117 km. from mean, weighted H=16.0.
NEODyS15392013-2090511.05e-07-2.39-3.300NEODyS: "Based on 37 optical observations (of which 1 are rejected as outliers) from 2009/10/22.400 to 2009/10/24.465."
2009 UN3JPL Sentry15392020-2108543.5e-08-3.53-4.300JPL: "Analysis based on 17 observations spanning 5.1178 days (2009-Oct-19.59856 to 2009-Oct-24.71635)." Diameter approximately 0.924 km. from mean, weighted H=17.8.
NEODyS15392020-2090594.06e-08-3.44-4.260NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2009/10/19.599 to 2009/10/24.717."

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 25 October '09

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

2310Grabbed MPEC 2009-U93 - 2009 US19 - see above
Grabbed MPEC 2009-U94 - 2009 UT19 - see above
Grabbed MPEC 2009-U95 - 2009 UU19 - see above
Grabbed MPEC 2009-U96 - 2009 UV19 - see above
Grabbed MPEC 2009-U97 - 2009 UW19 - see above
Grabbed MPEC 2009-U98 - 2009 UX19 - see above
Grabbed MPEC 2009-U99 - 2009 UY19 - see above
Grabbed MPEC 2009-U100 - Comet C/2009 U5 (Grauer) - see above
Grabbed MPEC 2009-U101 - 2009 UZ19 - see above
1803Grabbed MPEC 2009-U92 - 2004 RV2 - see above
1702Noted that JPL Sentry has updated its 2009 UV18 risk assessment - see above
1539Noted that JPL Sentry has updated its 2009 UN3 risk assessment - see above
Noted that NEODyS has updated its 2009 UN3 risk assessment - see above
Noted that NEODyS has posted 2009 UV18 as an impact risk - see above
Noted that NEODyS has posted 2009 UW18 as an impact risk - see above
Grabbed MPEC 2009-U91 - Daily Orbit Update - see above
0133Grabbed MPEC 2009-U89 - 2009 UD19 - see above
Grabbed MPEC 2009-U90 - 2009 UE19 - see above