Contents  on 18 October '09

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NEOCP Activity  on 18 October '09

The MPC's NEO Confirmation Page has 10 listings: 3 new, 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and seven updated listings. Of these, six were "one nighters." The Tracking News counted a total of 21 listings on the NEOCP at some point on this day.

New MPECs  on 18 October '09

Minor Planet Electronic Circulars

There were six MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-U31 - "23:56 UT" - 2009 UN1


MPEC 2009-U30 - "23:51 UT" - 2009 UM1


MPEC 2009-U29 - "23:47 UT" - 2009 UL1


MPEC 2009-U28 - "23:44 UT" - 2009 UK1


MPEC 2009-U27 - "21:23 UT" - Comet C/2009 U1 (Garradd)


<< DOU on 18 Oct. '09 >>  MPEC 2009-U26 - "06:14 UT" - Daily Orbit Update

Observers  on 18 October '09

A total of 29 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
169Airali Obs. in Italy, 1 in MPEC 2009-U26 -- 433
H55Astronomical Research Obs. (ARO) in Illinois, 2 in MPECs 2009-U29 & 2009-U30 -- 2009 UM1, 2009 UL1
A81Balzaretto Obs. in Italy, 1 in MPEC 2009-U26 -- 159402
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-U26 -- 2006 UR
703Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2009-U26 -- 2004 QT24, 85770, 55408, 38091, 16816, 3553, 3200
448Desert Moon Obs. in New Mexico, 6 in MPEC 2009-U26 -- 2009 TK8, 2009 TA1, 2009 SK2, 2009 SB100, 2009 QO, 2006 AO4
F657Paul Roche in Wales via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-U26 -- 2005 UK1
J95Great Shefford Obs. in England, 6 in MPECs 2009-U26, 2009-U28, 2009-U29 & 2009-U31 -- 2009 UN1, 2009 UL1, 2009 UK1, 2009 UD, 2009 TM8, 2009 TK8
H05Kline Obs. in Colorado, 2 in MPEC 2009-U26 -- 2009 UG, 2009 TK12
704LINEAR in New Mexico, 11 in MPECs 2009-U26 & 2009-U28 -- 2009 UQ, 2009 UK1, 2009 UG, 2009 TK12, 2009 ST19, 2009 KC3, 2005 CN, 1998 MR24, 54401, 159402, 3553
I36Los Campitos Obs. in Argentina, 1 in MPEC 2009-U26 -- 5626
560Madonna di Dossobuono Obs. in Italy, 2 in MPEC 2009-U26 -- 2009 SM103, 159402
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2009-U28, 2009-U29, 2009-U30 & 2009-U31 -- 2009 UN1, 2009 UM1, 2009 UL1, 2009 UK1
232Masquefa Obs. in Spain, 1 in MPEC 2009-U26 -- 2009 KC3
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2009-U26, 2009-U29, 2009-U30 & 2009-U31 -- 2009 UN1, 2009 UM1, 2009 UL1, 2003 TK, 16816, 143487, 140158
D90`K. Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-U26 -- 2009 TH8
473Remanzacco Obs. in Italy, 1 in MPEC 2009-U28 -- 2009 UK1
I20Rio Cuarto Obs. in Argentina, 5 in MPEC 2009-U26 -- 2009 TA1, 2009 SS104, 2009 SQ172, 2009 SK1, 2009 QD34
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-U29 -- 2009 UL1
H36Sandlot Obs. in Kansas, 6 in MPECs 2009-U26 & 2009-U31 -- 2009 UQ, 2009 UN1, 2009 TV4, 2009 TN8, 2009 TL8, 2009 SQ
204Schiaparelli Obs. in Italy, 3 in MPECs 2009-U26 & 2009-U29 -- 2009 UL1, 2009 TL8, 2009 FG19
D21Shenton Park Obs. in Western Australia, 8 in MPEC 2009-U26 -- 2009 UK, 2009 UG, 2009 UF, 2009 UD, 2009 TN8, 2009 TK8, 2009 TH8, 2009 TF10
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2009-U26 & 2009-U27 -- 2009 UE, C/2009 U1, 2009 TH8, 2009 FU4
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2009-U26 & 2009-U30 -- 2009 UM1, 2009 TE10, 2009 TB3, 2009 SX17, 2009 SQ104
I19Tanti Obs. in Argentina, 1 in MPEC 2009-U27 -- C/2009 U1
926Tenagra II Obs. in Arizona, 8 in MPECs 2009-U26, 2009-U28, 2009-U29, 2009-U30 & 2009-U31 -- 2009 UN1, 2009 UM1, 2009 UL1, 2009 UK1, 2009 UD, 2009 UC, 2009 TO8, 2009 TM8
H53Thompsonville Obs. in Illinois, 2 in MPEC 2009-U26 -- 17274, 5626
J35Tucci Obs. in Spain, 1 in MPEC 2009-U26 -- 3552
C00Velikie Luki Obs. in Russia, 1 in MPEC 2009-U26 -- 2009 ML1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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 UKNEODyS15432038-208046.99e-09-5.56-5.800NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2009/10/16.283 to 2009/10/17.615."
2009 UENEODyS1543R E M O V E D-
2009 UDNEODyS1543R E M O V E D-
2009 TE10NEODyS15432011-2089701.24e-08-3.95-4.670NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2009/10/15.089 to 2009/10/17.094."
2009 TM8JPL Sentry16192079-21081017.3e-05-6.12-7.130JPL: "Analysis based on 36 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.
NEODyS15432079-2089164.76e-06-7.33-7.950NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2009/10/15.212 to 2009/10/17.463."
2009 TH8NEODyS1543R E M O V E D-

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 18 October '09

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

0027 10/19Grabbed MPEC 2009-U31 - 2009 UN1 - see above
2358Grabbed MPEC 2009-U28 - 2009 UK1 - see above
Grabbed MPEC 2009-U29 - 2009 UL1 - see above
Grabbed MPEC 2009-U30 - 2009 UM1 - see above
2200Grabbed MPEC 2009-U27 - Comet C/2009 U1 (Garradd) - see above
1619Noted that JPL Sentry has updated its 2009 TM8 risk assessment - see above
1543Noted that NEODyS has updated its 2009 TE10 risk assessment - see above
Noted that NEODyS has removed 2009 TH8 as an impact risk - see above
Noted that NEODyS has updated its 2009 TM8 risk assessment - see above
Noted that NEODyS has removed 2009 UD as an impact risk - see above
Noted that NEODyS has removed 2009 UE as an impact risk - see above
Noted that NEODyS has posted 2009 UK as an impact risk - see above
Grabbed MPEC 2009-U26 - Daily Orbit Update - see above