Contents  on 22 September '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.

Radar Astrometry  on 22 September '08

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added the following small-body radar observing work:


Data addition noted at 1937 UTC when the database was dated 22 Sept.


Data addition noted at 2314 UTC when the database was dated 22 Sept.

NEOCP Activity  on 22 September '08

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

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of thirteen objects listed on the NEOCP at some point today.

New MPECs  on 22 September '08

Minor Planet Electronic Circulars

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


MPEC 2008-S35 - "18:07 UT" - 2007 MM13


MPEC 2008-S34 - "18:03 UT" - 2008 SU


MPEC 2008-S33 - "17:59 UT" - 2008 ST


MPEC 2008-S32 - "17:55 UT" - 2008 SS


MPEC 2008-S31 - "17:52 UT" - 2008 SR


MPEC 2008-S30 - "17:49 UT" - 2008 SQ


MPEC 2008-S29 - "17:47 UT" - 2008 SP


MPEC 2008-S28 - "17:44 UT" - 2008 SO


MPEC 2008-S27 - "17:14 UT" - Observations of Comets


MPEC 2008-S26 - "16:59 UT" - Comet P/2008 S1 = 2008 JK (Catalina-McNaught)


MPEC 2008-S25 - "16:41 UT" - Comet C/2008 R3 (LINEAR)


MPEC 2008-S24 - "16:35 UT" - Comet C/2008 Q3 (Garradd)


MPEC 2008-S23 - "16:26 UT" - Comet P/2008 Q2 (Ory)


MPEC 2008-S22 - "16:01 UT" - Comet C/2008 Q1 (Maticic)


MPEC 2008-S21 - "15:13 UT" - Comet C/2008 P1 (Garradd)


<< DOU on 22 Sept. '08 >>  MPEC 2008-S20 - "06:06 UT" - Daily Orbit Update

Observers  on 22 September '08

A total of 59 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 1 in MPEC 2008-S25 -- C/2008 R3
J97Alginet Obs. in Spain, 2 in MPECs 2008-S22 & 2008-S27 -- C/2008 Q1, C/2005 S4
B37Ametlla del Valles Obs. in Spain, 4 in MPECs 2008-S22 & 2008-S27 -- C/2008 Q1, C/2005 S4, C/2005 L3, 199P
J20Aravaca Obs., 4 in MPEC 2008-S27 -- C/2008 J1, C/2007 N3, C/2006 W3, 205P
251Arecibo in Puerto Rico, 1 in radar -- 137032
H55Astronomical Research Obs. (ARO) in Illinois, 28 in MPECs 2008-S20, 2008-S28, 2008-S30, 2008-S31, 2008-S32, 2008-S33, 2008-S34 & 2008-S35 -- 2008 SU, 2008 ST, 2008 SS, 2008 SR, 2008 SQ, 2008 SO, 2008 RW24, 2008 RT26, 2008 RT24, 2008 RT, 2008 RQ24, 2008 RG1, 2008 ON, 2008 MZ, 2008 JZ7, 2007 MM13, 2006 WZ2, 2005 WK4, 2005 RC34, 2005 LR3, 2004 NL8, 2003 GW, 2002 SS41, 2002 QY6, 2001 SG10, 2001 OG25, 2000 PK5, 1998 SC15
J51Atlante Obs. in the Canary Islands, 7 in MPECs 2008-S22 & 2008-S27 -- C/2008 Q1, C/2008 N1, C/2007 N3, C/2006 W3, C/2006 OF2, 205P, 29P
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-S20 -- 2003 GW
I32Beta Orionis Obs. in Argentina, 2 in MPECs 2008-S21 & 2008-S27 -- C/2008 P1, C/2008 A1
235CAST Obs. in Italy, 2 in MPEC 2008-S27 -- C/2006 W3, 205P
B20Carmelita Obs. in Spain, 4 in MPEC 2008-S27 -- C/2008 J1, C/2007 N3, C/2006 W3, 205P
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2008-S20, 2008-S23 & 2008-S27 -- 2008 RY24, 2008 QZ, 2008 QT3, P/2008 Q2, C/2008 N1, 2003 RM, 2001 UZ16, 1994 AW1, 138947, 8567
B24Cesson Obs. in France, 1 in MPEC 2008-S20 -- 2003 GW
A77Chante-Perdrix Obs. in France, 1 in MPEC 2008-S27 -- 68P
850Cordell-Lorenz Obs. in Tennessee, 5 in MPECs 2008-S22, 2008-S25, 2008-S27, 2008-S28 & 2008-S30 -- 2008 SQ, 2008 SO, C/2008 R3, C/2008 Q1, 205P
I31Cristo Rey Obs. in Argentina, 2 in MPEC 2008-S27 -- C/2008 A1, 6P
448Desert Moon Obs. in New Mexico, 1 in MPEC 2008-S32 -- 2008 SS
151Eschenberg Obs. in Switzerland, 3 in MPECs 2008-S20, 2008-S23 & 2008-S30 -- 2008 SQ, P/2008 Q2, 11500
E85Farm Cove Obs. in New Zealand, 2 in MPECs 2008-S24 & 2008-S26 -- P/2008 S1, C/2008 Q3
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 185851
J95Great Shefford Obs. in England, 3 in MPECs 2008-S29, 2008-S30 & 2008-S32 -- 2008 SS, 2008 SQ, 2008 SP
E16Grove Creek Obs. in New South Wales, 7 in MPECs 2008-S21 & 2008-S27 -- C/2008 P1, C/2007 N3, 205P, 67P, 51P, 47P, 6P
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2008-S27 -- 205P
J28Jaen Obs. in Spain, 4 in MPECs 2008-S20, 2008-S22 & 2008-S23 -- P/2008 Q2, C/2008 Q1, 105140, 5143
415Kambah Obs. in the Australian Capital Territory, 7 in MPECs 2008-S21, 2008-S23, 2008-S24 & 2008-S27 -- C/2008 Q3, P/2008 Q2, C/2008 P1, P/2008 O2, P/2008 J3, C/2006 V1, 6P
585Kiev Comet Station in the Ukraine, 4 in MPECs 2008-S23, 2008-S25 & 2008-S27 -- C/2008 R3, P/2008 Q2, P/2008 O2, C/2007 N3
352Konan Obs. in Japan, 1 in MPEC 2008-S27 -- 205P
J38La Vara Obs. in Spain, 2 in MPEC 2008-S27 -- C/2005 L3, 205P
J59Linceo Obs. in Spain, 2 in MPECs 2008-S20 & 2008-S27 -- 163000, 205P
130Lumezzane Obs. in Italy, 3 in MPEC 2008-S27 -- 67P, 61P, 51P
J40Malaga Obs. in Spain, 4 in MPEC 2008-S27 -- C/2008 J1, C/2007 W1, C/2006 W3, 205P
152Moletai Obs. in Lithuania, 3 in MPECs 2008-S22 & 2008-S27 -- C/2008 Q1, P/2008 L2, C/2007 W1
J45Montana Cabreja Obs. in the Canary Islands, 2 in MPEC 2008-S27 -- C/2006 OF2, 205P
213Montcabre Obs. in Spain, 3 in MPECs 2008-S22, 2008-S25 & 2008-S27 -- C/2008 R3, C/2008 Q1, 205P
945Monte Deva Obs. in Spain, 4 in MPEC 2008-S27 -- C/2008 J1, C/2006 W3, C/2006 OF2, 205P
900Moriyama Obs. in Japan, 2 in MPECs 2008-S22 & 2008-S30 -- 2008 SQ, C/2008 Q1
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2008-S27, 2008-S29, 2008-S30, 2008-S31 & 2008-S33 -- 2008 ST, 2008 SR, 2008 SQ, 2008 SP, P/2008 O2
J93Mt. Tuffley Obs. in England, 1 in MPEC 2008-S27 -- C/2006 OF2
A13Naef Obs. in Switzerland, 5 in MPECs 2008-S20, 2008-S22 & 2008-S30 -- 2008 SQ, C/2008 Q1, 1998 SO, 65733, 140288
J47Nazaret Obs. in Spain, 15 in MPECs 2008-S22, 2008-S23, 2008-S25, 2008-S27 & 2008-S32 -- 2008 SS, C/2008 R3, P/2008 Q2, C/2008 Q1, P/2008 O2, C/2007 W1, C/2007 N3, C/2006 OF2, 205P, 199P, 67P, 61P, 47P, 29P, 17P
J69North Obs. in England, 1 in MPEC 2008-S20 -- 185851
423North Ryde Obs. in New South Wales, 4 in MPECs 2008-S21, 2008-S26 & 2008-S27 -- P/2008 S1, C/2008 P1, P/2008 J3, 6P
B49Paus Obs. in Spain, 2 in MPEC 2008-S27 -- P/2008 L2, 205P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2008-S27 -- 205P, 51P
473Remanzacco Obs. in Italy, 1 in MPEC 2008-S30 -- 2008 SQ
854Sabino Canyon Obs. in Arizona, 5 in MPECs 2008-S20, 2008-S28, 2008-S30, 2008-S32 & 2008-S33 -- 2008 ST, 2008 SS, 2008 SQ, 2008 SO, 2008 SA
E12Siding Spring Survey (SSS) in New South Wales, 15 in MPECs 2008-S20, 2008-S26, 2008-S27 & 2008-S32 -- 2008 SS, 2008 SD, 2008 SC, P/2008 S1, 2008 QS11, 2008 MZ, 2007 RF5, C/2007 N3, C/2006 V1, 142348, 3753, 199P, 68P, 67P, 47P
510Siegen Obs. in Germany, 5 in MPEC 2008-S27 -- C/2008 J1, C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2
071Smolyan Obs. in Bulgaria, 4 in MPEC 2008-S27 -- C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-S20, 2008-S23, 2008-S28 & 2008-S34 -- 2008 SU, 2008 SO, P/2008 Q2, 96744
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2008-S20, 2008-S28, 2008-S31 & 2008-S34 -- 2008 SU, 2008 SR, 2008 SO, 2008 RK1, 2008 RJ1, 2008 RG1, 2006 UP, 2006 TN, 2000 JY8, 1991 TB2
A78Stia Obs. in Italy, 2 in MPEC 2008-S20 -- 2008 PL3, 2008 NU
673Table Mtn. Obs. in southern California, 4 in MPECs 2008-S22, 2008-S23 & 2008-S27 -- P/2008 Q2, C/2008 Q1, C/2008 N1, 205P
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-S20 -- 2008 SA
A98Taurus-1 Obs. in Belarus, 2 in MPEC 2008-S20 -- 185851, 16960
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-S30 -- 2008 SQ
J70Vega del Thader Obs. in Spain, 2 in MPEC 2008-S27 -- 205P, 47P
231Vesqueville Obs. in Belgium, 1 in MPEC 2008-S27 -- 205P
H47Vicksburg Obs. in Mississippi, 4 in MPECs 2008-S25 & 2008-S27 -- C/2008 R3, C/2007 N3, 205P, 47P
367Yatsuka Obs., 1 in MPEC 2008-S27 -- 205P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 September '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 STJPL Sentry20262027-2041104.0e-06-6.38-6.840JPL: "Analysis based on 21 observations spanning .22444 days (2008-Sep-22.16113 to 2008-Sep-22.38557)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
2008 SRJPL Sentry20262010-2105175.5e-09-5.39-5.540JPL: "Analysis based on 18 observations spanning .90029 days (2008-Sep-21.43219 to 2008-Sep-22.33248)." Diameter approximately 0.186 km. from mean, weighted H=21.3.
2008 SOJPL Sentry20262013-2108791.5e-07-4.57-4.820JPL: "Analysis based on 20 observations spanning 1.0572 days (2008-Sep-21.23903 to 2008-Sep-22.29621)." Diameter approximately 0.220 km. from mean, weighted H=20.9.
2008 KN11NEODyS1937204612.6e-07-5.57-5.570NEODyS: "Based on 129 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/19.985."

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 22 September '08

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

2314Noted Radar Astrometry database addition - see above
2026Noted that JPL Sentry has posted 2008 SO as an impact risk - see above
Noted that JPL Sentry has posted 2008 SR as an impact risk - see above
Noted that JPL Sentry has posted 2008 ST as an impact risk - see above
1937Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
Noted Radar Astrometry database addition - see above
1832Grabbed MPEC 2008-S24 - Comet C/2008 Q3 (Garradd) - see above
Grabbed MPEC 2008-S25 - Comet C/2008 R3 (LINEAR) - see above
Grabbed MPEC 2008-S26 - Comet P/2008 S1 = 2008 JK (Catalina-McNaught) - see above
Grabbed MPEC 2008-S27 - Observations of Comets - see above
Grabbed MPEC 2008-S28 - 2008 SO - see above
Grabbed MPEC 2008-S29 - 2008 SP - see above
Grabbed MPEC 2008-S30 - 2008 SQ - see above
Grabbed MPEC 2008-S31 - 2008 SR - see above
Grabbed MPEC 2008-S32 - 2008 SS - see above
Grabbed MPEC 2008-S33 - 2008 ST - see above
Grabbed MPEC 2008-S34 - 2008 SU - see above
Grabbed MPEC 2008-S35 - 2007 MM13 - see above
1637Grabbed MPEC 2008-S21 - Comet C/2008 P1 (Garradd) - see above
Grabbed MPEC 2008-S22 - Comet C/2008 Q1 (Maticic) - see above
Grabbed MPEC 2008-S23 - Comet P/2008 Q2 (Ory) - see above
1410Grabbed MPEC 2008-S20 - Daily Orbit Update - see above