Contents  on 12 September '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 12 September '09

The MPC's NEO Confirmation Page has 5 listings: 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of seven 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 12 September '09

Minor Planet Electronic Circulars

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


MPEC 2009-R49 - "15:20 UT" - Observations of Comets


MPEC 2009-R48 - "15:04 UT" - Comet C/2009 R1 (McNaught)


MPEC 2009-R47 - "14:56 UT" - Comet P/2009 Q5 (McNaught)


MPEC 2009-R46 - "14:52 UT" - Comet P/2009 Q4 (Boattini)


MPEC 2009-R45 - "14:47 UT" - Comet P/2009 Q1 (Hill)


MPEC 2009-R44 - "14:44 UT" - Comet C/2009 P1 (Garradd)


MPEC 2009-R43 - "14:39 UT" - Comet C/2009 O4 (Hill)


MPEC 2009-R42 - "12:38 UT" - 2009 RD1


<< DOU on 12 Sept. '09 >>  MPEC 2009-R41 - "06:07 UT" - Daily Orbit Update

Observers  on 12 September '09

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

CodeObserver / observatory
349Ageo Obs. in Japan, 10 in MPECs 2009-R43, 2009-R46, 2009-R47 & 2009-R49 -- P/2009 Q5, P/2009 Q4, C/2009 O4, C/2008 P1, C/2007 VO53, C/2006 W3, 222P, 157P, 127P, 88P
J97Alginet Obs. in Spain, 2 in MPEC 2009-R49 -- C/2009 K2, C/2006 W3
J24Altamira Obs. in Spain, 5 in MPECs 2009-R43, 2009-R47 & 2009-R49 -- P/2009 Q5, C/2009 O4, C/2008 P1, C/2006 W3, 217P
H55Astronomical Research Obs. (ARO) in Illinois, 10 in MPEC 2009-R41 -- 2009 RH, 2009 QT, 2009 QG34, 2009 QF31, 2009 QC36, 2009 QC23, 2009 QA35, 2009 PQ1, 2009 ML1, 2006 VV2
J51Atlante Obs. in the Canary Islands, 4 in MPEC 2009-R49 -- C/2008 P1, C/2006 W3, C/2006 S3, 22P
A81Balzaretto Obs. in Italy, 1 in MPEC 2009-R49 -- 22P
I32Beta Orionis Obs. in Argentina, 3 in MPEC 2009-R49 -- C/2009 K5, C/2006 W3, 22P
B59Borken Obs. in Germany, 1 in MPEC 2009-R49 -- C/2006 W3
B96Brixiis Obs. in Belgium, 2 in MPEC 2009-R49 -- P/2009 L2, C/2006 W3
160Castelmartini Obs. in Italy, 5 in MPECs 2009-R43, 2009-R45 & 2009-R49 -- P/2009 Q1, C/2009 O4, P/2009 L2, C/2009 K2, C/2006 W3
703Catalina Sky Survey (CSS) in Arizona, 14 in MPECs 2009-R41, 2009-R45 & 2009-R49 -- 2009 QO, 2009 QF31, P/2009 Q1, 2009 MC9, C/2007 U1, 30825, 17274, 163899, 163697, 8035, 1943, 433, 118P, 43P
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 4 in MPECs 2009-R41 & 2009-R42 -- 2009 RD1, 2009 QC36, 2009 KC3, 152664
I21El Condor Obs. in Argentina, 5 in MPECs 2009-R41, 2009-R42, 2009-R43, 2009-R48 & 2009-R49 -- 2009 RD1, C/2009 R1, C/2009 O4, C/2006 W3, 2000 CO101
762Four Winds Obs. in Michigan, 1 in MPEC 2009-R49 -- C/2006 W3
E94Gisborne Obs. in New Zealand, 2 in MPEC 2009-R49 -- C/2008 T2, 22P
J95Great Shefford Obs. in England, 1 in MPEC 2009-R41 -- 2009 KC3
442Gualba Obs. in Spain, 2 in MPEC 2009-R49 -- C/2006 W3, C/2006 Q1
750Hobbs Obs. in Wisconsin, 2 in MPEC 2009-R49 -- C/2006 W3, 22P
415Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2009-R49 -- 162P
585Kiev Comet Station in the Ukraine, 7 in MPECs 2009-R41, 2009-R43, 2009-R45, 2009-R46, 2009-R47 & 2009-R49 -- P/2009 Q5, P/2009 Q4, P/2009 Q1, C/2009 O4, 2009 NH, C/2006 W3, 217P
D95Kurihara Obs., 3 in MPEC 2009-R49 -- C/2006 W3, 88P, 22P
704LINEAR in New Mexico, 1 in MPEC 2009-R49 -- C/2007 VO53
212La Dehesilla Obs. in Spain, 4 in MPEC 2009-R49 -- P/2009 L2, C/2009 K2, C/2008 N1, C/2006 Q1
J75La Sagra Obs. in Spain, 2 in MPECs 2009-R41 & 2009-R49 -- 2000 RH60, 222P
A65Le Couvent de Lentin Obs. in France, 3 in MPEC 2009-R41 -- 16834, 1943, 433
J59Linceo Obs. in Spain, 1 in MPEC 2009-R49 -- 22P
C01Lohrmann Obs. in Germany, 13 in MPEC 2009-R41 -- 2009 NE, 2009 MC9, 2005 TG45, 2002 NP1, 217390, 17274, 16834, 163697, 162181, 12711, 11500, 1943, 433
B82Maidbronn Obs. in Germany, 2 in MPEC 2009-R49 -- C/2006 Q1, 157P
J40Malaga Obs. in Spain, 2 in MPEC 2009-R49 -- C/2008 N1, C/2006 W3
232Masquefa Obs. in Spain, 2 in MPEC 2009-R49 -- C/2006 W3, 22P
118Modra Obs. in Slovakia, 4 in MPEC 2009-R49 -- C/2009 K2, C/2008 P1, C/2007 VO53, C/2007 U1
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2009-R49 -- 22P
213Montcabre Obs. in Spain, 6 in MPECs 2009-R45, 2009-R47, 2009-R48 & 2009-R49 -- C/2009 R1, P/2009 Q5, P/2009 Q1, C/2008 P1, C/2006 W3, 157P
945Monte Deva Obs. in Spain, 6 in MPECs 2009-R43 & 2009-R49 -- C/2009 O4, C/2008 P1, C/2006 W3, C/2006 Q1, 217P, 22P
900Moriyama Obs. in Japan, 11 in MPECs 2009-R43 & 2009-R49 -- C/2009 O4, C/2008 P1, C/2008 N1, C/2007 U1, C/2006 W3, C/2006 S3, C/2006 Q1, 219P, 127P, 43P, 22P
D81Nagano Obs. in Japan, 2 in MPEC 2009-R49 -- C/2006 S3, 22P
J47Nazaret Obs. in Spain, 7 in MPECs 2009-R43, 2009-R47 & 2009-R49 -- P/2009 Q5, C/2009 O4, P/2009 L2, C/2008 P1, C/2006 W3, 157P, 22P
B49Paus Obs. in Spain, 1 in MPEC 2009-R49 -- C/2006 S3
561Piszkesteto Sta. in Hungary, 1 in MPEC 2009-R43 -- C/2009 O4
H06RAS Obs. Mayhill in New Mexico, 2 in MPEC 2009-R49 -- 222P, 217P
D90RAS Obs. Moorook in South Australia, 5 in MPECs 2009-R44, 2009-R48 & 2009-R49 -- C/2009 R1, C/2009 P1, C/2009 K5, P/2009 K1, C/2008 T2
473Remanzacco Obs. in Italy, 2 in MPECs 2009-R43 & 2009-R49 -- C/2009 O4, C/2006 W3
I20Rio Cuarto Obs. in Argentina, 2 in MPEC 2009-R41 -- 2009 QE34, 2002 TN30
461SZTE Asteroid Program (SZTE) in Hungary, 2 in MPEC 2009-R49 -- C/2006 W3, C/2006 Q1
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-R42 -- 2009 RD1
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-R49 -- C/2008 S3
B61Sant Cugat del Valles Obs. in Spain, 2 in MPECs 2009-R41 & 2009-R49 -- C/2006 W3, 1943
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPEC 2009-R49 -- C/2008 P1, 217P
204Schiaparelli Obs. in Italy, 4 in MPEC 2009-R49 -- C/2008 S3, 219P, 118P, 30P
E12Siding Spring Survey (SSS) in New South Wales, 9 in MPECs 2009-R41, 2009-R42, 2009-R44, 2009-R47, 2009-R48 & 2009-R49 -- 2009 RD1, C/2009 R1, 2009 QJ9, P/2009 Q5, C/2009 P1, 2009 MC9, 2005 TE15, 4015, 162P
B40Skylive Obs. in Italy, 1 in MPEC 2009-R49 -- 217P
A97Stammersdorf Obs. in Austria, 1 in MPEC 2009-R49 -- C/2006 W3
A71Stixendorf Obs. in Austria, 6 in MPEC 2009-R49 -- C/2009 K2, C/2008 P1, C/2008 N1, C/2006 W3, C/2006 Q1, 22P
I19Tanti Obs. in Argentina, 2 in MPECs 2009-R44 & 2009-R49 -- C/2009 P1, C/2009 K5
H10Tzec Maun Obs. Mayhill in New Mexico, 6 in MPECs 2009-R41, 2009-R43, 2009-R47 & 2009-R49 -- 2009 RN, P/2009 Q5, C/2009 O4, C/2008 P1, 217P, 118P
D25Tzec Maun Obs. Pingelly in Western Australia, 5 in MPEC 2009-R49 -- P/2009 K1, C/2006 W3, 217P, 88P, 22P
C00Velikie Luki Obs. in Russia, 1 in MPEC 2009-R41 -- 17274
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2009-R49 -- C/2006 W3, 22P
I13Washington D.C. Obs. in Washington, D.C., 1 in MPEC 2009-R49 -- C/2006 W3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 September '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 RRNEODyS14552020-2090532.56e-06-5.82-6.510NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2009/09/11.183 to 2009/09/11.338."
2009 RNJPL Sentry14552015-2106321.3e-07-4.17-4.590JPL: "Analysis based on 25 observations spanning .43798 days (2009-Sep-11.00009 to 2009-Sep-11.43807)." Diameter approximately 0.366 km. from mean, weighted H=19.8.
NEODyS14552015-2088172.14e-08-4.52-4.630NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/09/11.001 to 2009/09/11.439."

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 12 September '09

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

1544Grabbed MPEC 2009-R47 - Comet P/2009 Q5 (McNaught) - see above
Grabbed MPEC 2009-R48 - Comet C/2009 R1 (McNaught) - see above
Grabbed MPEC 2009-R49 - Observations of Comets - see above
1455Noted that JPL Sentry has updated its 2009 RN risk assessment - see above
Noted that NEODyS has posted 2009 RN as an impact risk - see above
Noted that NEODyS has posted 2009 RR as an impact risk - see above
Grabbed MPEC 2009-R41 - Daily Orbit Update - see above
Grabbed MPEC 2009-R42 - 2009 RD1 - see above
Grabbed MPEC 2009-R43 - Comet C/2009 O4 (Hill) - see above
Grabbed MPEC 2009-R44 - Comet C/2009 P1 (Garradd) - see above
Grabbed MPEC 2009-R45 - Comet P/2009 Q1 (Hill) - see above
Grabbed MPEC 2009-R46 - Comet P/2009 Q4 (Boattini) - see above