Contents  on 17 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 17 October '09

The MPC's NEO Confirmation Page has 10 listings: 2 new, 8 updated

When last checked at 2309 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and eight updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of nineteen 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 17 October '09

Minor Planet Electronic Circulars

As of last check at 2309 UTC, there have been twelve MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-U25 - "19:45 UT" - 2009 UQ


MPEC 2009-U24 - "19:39 UT" - 2009 TM10


MPEC 2009-U23 - "14:59 UT" - 2008 UB95


MPEC 2009-U22 - "14:55 UT" - 1995 SD1


MPEC 2009-U21 - "12:41 UT" - 2009 UN


MPEC 2009-U20 - "12:39 UT" - 2009 UM


MPEC 2009-U19 - "12:36 UT" - 2009 UL


MPEC 2009-U18 - "12:32 UT" - 2009 UK


MPEC 2009-U17 - "12:29 UT" - 2009 UJ


MPEC 2009-U16 - "12:19 UT" - 2005 UN157


<< DOU on 17 Oct. '09 >>  MPEC 2009-U15 - "06:09 UT" - Daily Orbit Update


MPEC 2009-U14 - "01:06 UT" - 2009 TK12

Observers  on 17 October '09

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

CodeObserver / observatory
493Calar Alto Obs. in Spain, 1 in MPEC 2009-U15 -- 2005 TG45
703Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2009-U14, 2009-U15, 2009-U24 & 2009-U25 -- 2009 UQ, 2009 TM10, 2009 TK12, 2009 SG2, 2009 QO, 143487
J65Celbridge Obs. in Ireland, 1 in MPEC 2009-U14 -- 2009 TK12
448Desert Moon Obs. in New Mexico, 8 in MPEC 2009-U15 -- 2009 SW, 2009 SS104, 2009 RM, 2009 RD4, 2009 QK2, 2009 QG34, 2009 QD34, 2006 UR
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-U25 -- 2009 UQ
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 2 in MPECs 2009-U20 & 2009-U21 -- 2009 UN, 2009 UM
E10Faulkes Telescope South in New South Wales, 3 in MPECs 2009-U15, 2009-U16 & 2009-U20 -- 2009 UM, 2009 UD, 2005 UN157
J77Golden Hill Obs. in England, 1 in MPEC 2009-U14 -- 2009 TK12
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-U15 -- 162998
J95Great Shefford Obs. in England, 4 in MPECs 2009-U15, 2009-U20 & 2009-U21 -- 2009 UN, 2009 UM, 2009 UD, 2009 TM8
J28Jaen Obs. in Spain, 1 in MPEC 2009-U25 -- 2009 UQ
G92Jarnac Obs. in Arizona, 3 in MPECs 2009-U15 & 2009-U24 -- 2009 TM10, 2003 UB10, 85628
704LINEAR in New Mexico, 14 in MPECs 2009-U14 & 2009-U15 -- 2009 UD, 2009 TN8, 2009 TL4, 2009 TK12, 2009 TF10, 2009 ML1, 2008 JO, 2006 UR, 2004 XJ3, 1998 MR24, 34613, 162273, 136617, 2212
J75La Sagra Obs. in Spain, 2 in MPEC 2009-U15 -- 2009 TK8, 218863
H13Lenomiya Obs. in Arizona, 1 in MPEC 2009-U15 -- 2009 MC9
H01Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2009-U15, 2009-U16, 2009-U17, 2009-U18, 2009-U19, 2009-U20, 2009-U21 & 2009-U25 -- 2009 UQ, 2009 UN, 2009 UM, 2009 UL, 2009 UK, 2009 UJ, 2009 UD, 2009 TM8, 2005 UN157
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2009-U15, 2009-U16, 2009-U17, 2009-U18, 2009-U19, 2009-U20 & 2009-U21 -- 2009 UN, 2009 UM, 2009 UL, 2009 UK, 2009 UJ, 2006 SP134, 2005 UN157, 96536, 171486, 3361
423North Ryde Obs. in New South Wales, 1 in MPEC 2009-U15 -- 3753
B49Paus Obs. in Spain, 2 in MPEC 2009-U15 -- 2009 ST19, 2009 NA
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-U24 -- 2009 TM10
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-U15 -- 2009 TH8
I20Rio Cuarto Obs. in Argentina, 2 in MPEC 2009-U15 -- 2009 TH8, 2009 QY33
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2009-U17, 2009-U18 & 2009-U25 -- 2009 UQ, 2009 UK, 2009 UJ
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2009-U15 -- 2009 ST19
204Schiaparelli Obs. in Italy, 6 in MPEC 2009-U15 -- 2009 TU, 2009 TT, 2009 TS, 2009 TQ, 2009 RD4, 159402
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-U15 -- 2009 TH8
G68Sierra Stars Obs. in northern California, 1 in MPEC 2009-U15 -- 2009 SM
J26Spaceguard Centre in Wales, 1 in MPEC 2009-U15 -- 1943
291Spacewatch 1.8m telescope in Arizona, 16 in MPECs 2009-U15, 2009-U16, 2009-U18 & 2009-U19 -- 2009 UL, 2009 UK, 2009 TS7, 2009 TB3, 2009 SW1, 2009 SW, 2009 ST, 2009 SD229, 2009 SC15, 2009 SB15, 2009 PH, 2006 YT13, 2006 VT2, 2006 KF89, 2005 VQ, 2005 UN157
A78Stia Obs. in Italy, 3 in MPEC 2009-U15 -- 2009 ST19, 2009 SM103, 2009 RD4
147Suno Obs. in Italy, 2 in MPECs 2009-U14 & 2009-U15 -- 2009 UG, 2009 TK12
I19Tanti Obs. in Argentina, 1 in MPEC 2009-U18 -- 2009 UK
926Tenagra II Obs. in Arizona, 11 in MPECs 2009-U15, 2009-U16, 2009-U17, 2009-U18, 2009-U19, 2009-U20, 2009-U21, 2009-U22 & 2009-U23 -- 2009 UN, 2009 UM, 2009 UL, 2009 UK, 2009 UJ, 2009 TT, 2009 TL4, 2009 TJ4, 2008 UB95, 2005 UN157, 1995 SD1
C00Velikie Luki Obs. in Russia, 3 in MPEC 2009-U15 -- 2009 ST19, 35396, 5646
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 October '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2309 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 UKJPL Sentry15282016-2107742.3e-07-4.16-5.000JPL: "Analysis based on 30 observations spanning 1.1749 days (2009-Oct-16.28264 to 2009-Oct-17.45749)." Diameter approximately 0.351 km. from mean, weighted H=19.9.
2009 UENEODyS15292022-2090453.04e-07-6.77-7.580NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/10/16.412 to 2009/10/16.566."
2009 UDNEODyS1528207019.97e-09-9.31-9.310NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2009/10/16.282 to 2009/10/17.162."
JPL Sentry1528R E M O V E DJPL: Risk listing removed at 0933 UTC.
2009 UBNEODyS15282011-2088328.64e-09-7.08-7.150NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2009/10/16.179 to 2009/10/16.247."
2009 TE10NEODyS15292012-2060231.1e-09-4.91-5.260NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2009/10/15.089 to 2009/10/16.140."
2009 TM8JPL Sentry15282079-2108781.4e-04-5.85-6.530JPL: "Analysis based on 32 observations spanning 1.9675 days (2009-Oct-15.2109 to 2009-Oct-17.178442)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS15282079-208992.44e-06-7.52-8.130NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2009/10/15.212 to 2009/10/17.179."
2009 TH8JPL Sentry15282068-210048.5e-06-5.20-5.460JPL: "Analysis based on 26 observations spanning 2.4663 days (2009-Oct-14.54405 to 2009-Oct-17.01031)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
NEODyS1528206812.69e-07-6.54-6.540NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2009/10/14.545 to 2009/10/17.011."
2009 TS7NEODyS15292028-207923.35e-10-7.94-7.970NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2009/10/14.163 to 2009/10/16.412."
JPL Sentry15282044-210761.8e-09-7.70-8.130JPL: "Analysis based on 22 observations spanning 2.2491 days (2009-Oct-14.16257 to 2009-Oct-16.4117)." Diameter approximately 0.099 km. from mean, weighted H=22.7.
2009 TB3JPL Sentry1528R E M O V E DJPL: Risk listing removed at 0849 UTC.
2009 TUNEODyS1529208632.17e-05-5.88-6.310NEODyS: "Based on 56 optical observations (of which 1 are rejected as outliers) from 2009/10/10.191 to 2009/10/15.219."
JPL Sentry15282086-210862.2e-05-5.86-6.310JPL: "Analysis based on 55 observations spanning 5.0288 days (2009-Oct-10.18978 to 2009-Oct-15.21859)." Diameter approximately 0.012 km. from mean, weighted H=27.4.

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 17 October '09

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

2000Grabbed MPEC 2009-U24 - 2009 TM10 - see above
Grabbed MPEC 2009-U25 - 2009 UQ - see above
1529Noted that NEODyS has updated its 2009 TS7 risk assessment - see above
Noted that NEODyS has updated its 2009 TU risk assessment - see above
1528Noted that JPL Sentry has removed 2009 TB3 as an impact risk - see above
Noted that NEODyS has posted 2009 TE10 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 TH8 risk assessment - see above
Noted that NEODyS has updated its 2009 TH8 risk assessment - see above
Noted that JPL Sentry has updated its 2009 TM8 risk assessment - see above
Noted that NEODyS has updated its 2009 TM8 risk assessment - see above
Noted that JPL Sentry has updated its 2009 TS7 risk assessment - see above
Noted that JPL Sentry has updated its 2009 TU risk assessment - see above
Noted that NEODyS has posted 2009 UB as an impact risk - see above
Noted that JPL Sentry has removed 2009 UD as an impact risk - see above
Noted that NEODyS has posted 2009 UD as an impact risk - see above
Noted that NEODyS has posted 2009 UE as an impact risk - see above
Noted that JPL Sentry has posted 2009 UK as an impact risk - see above
Grabbed MPEC 2009-U15 - Daily Orbit Update - see above
Grabbed MPEC 2009-U16 - 2005 UN157 - see above
Grabbed MPEC 2009-U17 - 2009 UJ - see above
Grabbed MPEC 2009-U18 - 2009 UK - see above
Grabbed MPEC 2009-U19 - 2009 UL - see above
Grabbed MPEC 2009-U20 - 2009 UM - see above
Grabbed MPEC 2009-U21 - 2009 UN - see above
Grabbed MPEC 2009-U22 - 1995 SD1 - see above
Grabbed MPEC 2009-U23 - 2008 UB95 - see above
0210Grabbed MPEC 2009-U14 - 2009 TK12 - see above