Contents  on 27 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.

NEOCP Activity  on 27 September '08

The MPC's NEO Confirmation Page has 4 listings: 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of nine 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 27 September '08

Minor Planet Electronic Circulars

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


MPEC 2008-S82 - "22:15 UT" - Comet C/2001 D1 = 2004 X7 = 2008 S2 (SOHO)


MPEC 2008-S81 - "18:26 UT" - Comets C/2001 D1, 2008 S2 (SOHO)


MPEC 2008-S80 - "16:36 UT" - 2008 SJ82


MPEC 2008-S79 - "16:31 UT" - 2008 SH82


MPEC 2008-S78 - "14:48 UT" - Observations of Comets


MPEC 2008-S77 - "14:33 UT" - Comet P/2008 S1 = 2008 JK (Catalina-McNaught)


MPEC 2008-S76 - "14:28 UT" - Comet C/2008 R3 (LINEAR)


MPEC 2008-S75 - "14:23 UT" - Comet P/2008 R1 (Garradd)


MPEC 2008-S74 - "14:05 UT" - Comet P/2008 QP20 (Linear-Hill)


MPEC 2008-S73 - "14:00 UT" - Comet C/2008 Q3 (Garradd)


MPEC 2008-S72 - "13:56 UT" - Comet P/2008 Q2 (Ory)


MPEC 2008-S71 - "13:53 UT" - Comet C/2008 Q1 (Maticic)


MPEC 2008-S70 - "13:49 UT" - Comet C/2008 P1 (Garradd)


<< DOU on 27 Sept. '08 >>  MPEC 2008-S69 - "06:07 UT" - Daily Orbit Update

Observers  on 27 September '08

A total of 60 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 3 in MPEC 2008-S78 -- C/2008 J6, 205P, 29P
J20Aravaca Obs., 4 in MPEC 2008-S78 -- C/2008 J1, C/2006 W3, C/2006 OF2, 205P
H55Astronomical Research Obs. (ARO) in Illinois, 19 in MPECs 2008-S69 & 2008-S78 -- 2008 SU1, 2008 ST7, 2008 ST1, 2008 ST, 2008 SS, 2008 SR7, 2008 SR1, 2008 SP, 2008 SO, 2008 SE, 2008 RY24, 2008 RX24, 2008 RW24, 2008 RV, 2008 RQ24, 2008 QT3, 2008 OQ8, 2008 OM, C/2008 N1
467Auckland Obs. in New Zealand, 9 in MPECs 2008-S70, 2008-S77 & 2008-S78 -- P/2008 S1, C/2008 P1, P/2008 O2, C/2008 A1, C/2007 Q3, C/2007 N3, C/2007 G1, 205P, 67P
215Buchloe Obs. in Germany, 1 in MPEC 2008-S78 -- 44P
J96Cantabria Obs. in Spain, 2 in MPEC 2008-S78 -- C/2006 W3, C/2006 OF2
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2008-S78 -- P/2008 L2, C/2006 S3, 144P
J65Celbridge Obs. in Ireland, 4 in MPEC 2008-S69 -- 2008 SU1, 2008 SQ, 2008 SE, 2008 RV
A77Chante-Perdrix Obs. in France, 5 in MPECs 2008-S72 & 2008-S78 -- P/2008 Q2, C/2006 S3, 205P, 67P, 47P
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2008-S74 & 2008-S78 -- P/2008 QP20, 205P
I31Cristo Rey Obs. in Argentina, 1 in MPEC 2008-S78 -- C/2008 A1
J27El Guijo Obs. in Spain, 5 in MPEC 2008-S69 -- 2008 SQ1, 2003 GW, 2002 VV17, 2002 SS41, 1865
E85Farm Cove Obs. in New Zealand, 4 in MPECs 2008-S72, 2008-S77 & 2008-S78 -- P/2008 S1, P/2008 Q2, C/2008 A1, C/2007 N3
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-S69 -- 1627
J95Great Shefford Obs. in England, 2 in MPECs 2008-S78 & 2008-S79 -- 2008 SH82, 205P
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2008-S70 -- C/2008 P1
442Gualba Obs. in Spain, 1 in MPEC 2008-S78 -- 29P
F84Hibiscus Obs. in Tahiti, 2 in MPECs 2008-S77 & 2008-S78 -- P/2008 S1, 205P
D88Hiratsuka Obs., 5 in MPECs 2008-S71, 2008-S76 & 2008-S78 -- C/2008 R3, C/2008 Q1, C/2007 N3, 67P, 47P
B15Inastars Obs. in Germany, 1 in MPEC 2008-S69 -- 2003 GW
185Jurassien-Vicques Obs. in Switzerland, 1 in MPEC 2008-S72 -- P/2008 Q2
415Kambah Obs. in the Australian Capital Territory, 6 in MPECs 2008-S70, 2008-S73 & 2008-S78 -- C/2008 Q3, C/2008 P1, P/2008 J3, C/2007 Q3, 197P, 6P
585Kiev Comet Station in the Ukraine, 3 in MPECs 2008-S74 & 2008-S78 -- P/2008 QP20, 205P, 44P
J66Kinver Obs. in England, 2 in MPEC 2008-S69 -- 2008 SU1, 137032
352Konan Obs. in Japan, 9 in MPECs 2008-S72 & 2008-S78 -- P/2008 Q2, P/2008 L2, C/2007 W1, C/2007 U1, 67P, 61P, 59P, 47P, 6P
704LINEAR in New Mexico, 4 in MPECs 2008-S72 & 2008-S78 -- P/2008 Q2, C/2006 W3, 144P, 61P
J87La Canada Obs. in Spain, 1 in MPEC 2008-S72 -- P/2008 Q2
J38La Vara Obs. in Spain, 13 in MPECs 2008-S71, 2008-S76 & 2008-S78 -- C/2008 R3, C/2008 Q1, C/2008 N1, P/2008 L2, C/2008 J1, C/2007 N3, C/2006 W3, C/2006 OF2, 205P, 200P, 67P, 47P, 29P
844Los Molinos Obs. in Uruguay, 3 in MPEC 2008-S78 -- 67P, 47P, 6P
J40Malaga Obs. in Spain, 3 in MPEC 2008-S78 -- C/2008 J1, C/2006 W3, 205P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-S69 -- 2008 LA
D62Miyaki-Argenteus Obs. in Japan, 1 in MPEC 2008-S69 -- 2008 SE
J45Montana Cabreja Obs. in the Canary Islands, 1 in MPEC 2008-S78 -- 205P
900Moriyama Obs. in Japan, 16 in MPECs 2008-S72 & 2008-S78 -- P/2008 Q2, P/2008 O2, P/2008 L2, C/2007 W1, C/2007 U1, C/2007 N3, C/2006 W3, C/2006 OF2, 200P, 61P, 59P, 51P, 29P, 19P, 15P, 6P
474Mt. John Obs. in New Zealand, 1 in MPEC 2008-S80 -- 2008 SJ82
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2008-S78 & 2008-S79 -- 2008 SH82, 203P
J93Mt. Tuffley Obs. in England, 6 in MPECs 2008-S69 & 2008-S78 -- C/2006 OF2, 185851, 16960, 164400, 8567, 1627
A13Naef Obs. in Switzerland, 2 in MPEC 2008-S78 -- C/2006 S3, 203P
J47Nazaret Obs. in Spain, 6 in MPECs 2008-S76 & 2008-S78 -- C/2008 R3, C/2007 U1, C/2007 N3, 205P, 200P, 199P
J29Nira Obs. in Spain, 1 in MPEC 2008-S78 -- 61P
423North Ryde Obs. in New South Wales, 6 in MPECs 2008-S69, 2008-S70, 2008-S73, 2008-S77 & 2008-S78 -- P/2008 S1, C/2008 Q3, C/2008 P1, P/2008 J3, 3753, 6P
B49Paus Obs. in Spain, 1 in MPEC 2008-S78 -- 205P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPECs 2008-S72 & 2008-S78 -- P/2008 Q2, C/2007 U1, C/2006 OF2, 61P, 59P, 51P, 44P
649Powell Obs. in Kansas, 1 in MPEC 2008-S69 -- 2008 SR7
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-S78 -- C/2008 J1
461SZTE Asteroid Program in Hungary, 1 in MPEC 2008-S78 -- C/2006 S3
619Sabadell Obs. in Spain, 1 in MPEC 2008-S69 -- 8567
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-S72 -- P/2008 Q2
204Schiaparelli Obs. in Italy, 10 in MPECs 2008-S71, 2008-S76 & 2008-S78 -- C/2008 R3, C/2008 Q1, C/2008 J6, C/2007 U1, C/2006 OF2, 205P, 61P, 51P, 19P, 15P
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPECs 2008-S69, 2008-S75 & 2008-S80 -- 2008 SX7, 2008 SJ82, P/2008 R1, 2008 JO24, 2001 QM163, 1980
510Siegen Obs. in Germany, 1 in MPEC 2008-S69 -- 137032
071Smolyan Obs. in Bulgaria, 1 in MPEC 2008-S78 -- C/2007 G1
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 2 in MPEC 2008-S81 -- C/2008 S2, C/2001 D1
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2008-S69 -- 2008 RK1, 2008 RG98, 88188, 190491, 162900
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2008-S69 -- 2008 ST7, 2008 RM98, 2006 GW2
B26Terres Blanches Obs. in France, 3 in MPEC 2008-S78 -- C/2008 N1, C/2007 W1, C/2006 S3
H53Thompsonville Obs. in Illinois, 5 in MPEC 2008-S69 -- 2002 QY6, 1998 SJ70, 39572, 164400, 4179
H47Vicksburg Obs. in Mississippi, 6 in MPECs 2008-S76 & 2008-S78 -- C/2008 R3, C/2007 N3, C/2006 S3, 205P, 67P, 47P
B42Vitebsk Obs. in Belarus, 14 in MPECs 2008-S72, 2008-S74 & 2008-S78 -- P/2008 QP20, P/2008 Q2, P/2008 L2, C/2008 J6, C/2007 W1, C/2006 W3, 205P, 200P, 144P, 61P, 59P, 51P, 44P, 29P
367Yatsuka Obs., 8 in MPEC 2008-S78 -- C/2007 N3, C/2006 W3, C/2006 OF2, 67P, 47P, 29P, 19P, 6P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 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 SJ82JPL Sentry19322060-210293.7e-08-5.60-5.930JPL: "Analysis based on 13 observations spanning .93324 days (2008-Sep-26.74755 to 2008-Sep-27.68079)." Diameter approximately 0.230 km. from mean, weighted H=20.8.
2008 SV11NEODyS14452009-20905203.95e-07-1.70-1.740NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/09/26.261."
2008 ST7JPL Sentry14452073-2108953.5e-05-4.26-5.130JPL: "Analysis based on 35 observations spanning 2.0060 days (2008-Sep-24.29993 to 2008-Sep-26.3059)." Diameter approximately 0.054 km. from mean, weighted H=24.0.
NEODyS14452062-2089201.03e-05-4.72-5.200NEODyS: "Based on 38 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/09/26.307."
2008 STJPL Sentry14452047-2108246.9e-05-5.62-6.050JPL: "Analysis based on 31 observations spanning 3.8835 days (2008-Sep-22.16113 to 2008-Sep-26.04466)." Diameter approximately 0.013 km. from mean, weighted H=27.1.
NEODyS14452047-2082122.9e-05-5.91-6.070NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2008/09/22.162 to 2008/09/26.045."
2008 RM98JPL Sentry1445R E M O V E DJPL: Risk listing removed at 0851 UTC.
NEODyS1445R E M O V E D-
2008 LAJPL Sentry1445R E M O V E DJPL: Risk listing removed at 0851 UTC.
NEODyS1445R 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 27 September '08

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

2306Grabbed MPEC 2008-S82 - Comet C/2001 D1 = 2004 X7 = 2008 S2 (SOHO) - see above
1932Noted that JPL Sentry has posted 2008 SJ82 as an impact risk - see above
Grabbed MPEC 2008-S79 - 2008 SH82 - see above
Grabbed MPEC 2008-S80 - 2008 SJ82 - see above
Grabbed MPEC 2008-S81 - Comets C/2001 D1, 2008 S2 (SOHO) - see above
1606Grabbed MPEC 2008-S78 - Observations of Comets - see above
1445Noted that JPL Sentry has removed 2008 LA as an impact risk - see above
Noted that NEODyS has removed 2008 LA as an impact risk - see above
Noted that JPL Sentry has removed 2008 RM98 as an impact risk - see above
Noted that NEODyS has removed 2008 RM98 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 ST risk assessment - see above
Noted that NEODyS has updated its 2008 ST risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has posted 2008 SV11 as an impact risk - see above
Grabbed MPEC 2008-S69 - Daily Orbit Update - see above
Grabbed MPEC 2008-S70 - Comet C/2008 P1 (Garradd) - see above
Grabbed MPEC 2008-S71 - Comet C/2008 Q1 (Maticic) - see above
Grabbed MPEC 2008-S72 - Comet P/2008 Q2 (Ory) - see above
Grabbed MPEC 2008-S73 - Comet C/2008 Q3 (Garradd) - see above
Grabbed MPEC 2008-S74 - Comet P/2008 QP20 (Linear-Hill) - see above
Grabbed MPEC 2008-S75 - Comet P/2008 R1 (Garradd) - see above
Grabbed MPEC 2008-S76 - Comet C/2008 R3 (LINEAR) - see above
Grabbed MPEC 2008-S77 - Comet P/2008 S1 = 2008 JK (Catalina-McNaught) - see above