Contents  on 17 January '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 January '09

The MPC's NEO Confirmation Page has 13 listings: 1 new, 12 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and twelve updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of 21 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 17 January '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-B11 - "19:19 UT" - 2007 EJ26


MPEC 2009-B10 - "16:53 UT" - Comets C/2008 W1, 2009 A1 (STEREO)


MPEC 2009-B09 - "16:18 UT" - 2009 AH16


MPEC 2009-B08 - "16:15 UT" - 2009 AG16


MPEC 2009-B07 - "16:11 UT" - 2009 AF16


<< DOU on 17 Jan. '09 >>  MPEC 2009-B06 - "07:05 UT" - Daily Orbit Update


MPEC 2009-B05 - "02:37 UT" - 2009 AE16


MPEC 2009-B04 - "02:33 UT" - 2009 AD16


MPEC 2009-B03 - "02:29 UT" - 2009 AC16

Observers  on 17 January '09

A total of 32 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 3 in MPECs 2009-B03, 2009-B04 & 2009-B07 -- 2009 AF16, 2009 AD16, 2009 AC16
H55Astronomical Research Obs. (ARO) in Illinois, 37 in MPECs 2009-B03, 2009-B05, 2009-B06, 2009-B07, 2009-B08 & 2009-B09 -- 2009 AT, 2009 AN, 2009 AM, 2009 AK, 2009 AH16, 2009 AG16, 2009 AF16, 2009 AE16, 2009 AD16, 2009 AC16, 2008 YZ32, 2008 YZ28, 2008 YX32, 2008 YU30, 2008 YS27, 2008 YG3, 2008 YG29, 2008 YG26, 2008 YE30, 2008 YE29, 2008 XE2, 2008 WP1, 2008 WH60, 2008 TQ2, 2008 SQ1, 2008 SO1, 2008 RS26, 2008 QT3, 2008 OB9, 2005 TZ51, 2002 VY94, 2001 NZ1, 2000 OM, 2000 EW70, 2000 BL19, 2000 AE6, 1999 CW8
235CAST Obs. in Italy, 1 in MPEC 2009-B04 -- 2009 AD16
493Calar Alto Obs. in Spain, 5 in MPECs 2009-B03, 2009-B04, 2009-B07, 2009-B08 & 2009-B09 -- 2009 AH16, 2009 AG16, 2009 AF16, 2009 AD16, 2009 AC16
B09Capannoli Obs. in Italy, 1 in MPEC 2009-B04 -- 2009 AD16
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2009-B04 & 2009-B05 -- 2009 AE16, 2009 AD16
A94Cormons Obs. in Italy, 3 in MPEC 2009-B06 -- 2003 WX25, 3200, 1620
448Desert Moon Obs. in New Mexico, 6 in MPEC 2009-B06 -- 2009 AT, 2009 AM, 2008 YU30, 2008 YE29, 2008 CH116, 2000 EW70
J27El Guijo Obs. in Spain, 2 in MPECs 2009-B04 & 2009-B06 -- 2009 AD16, 36284
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2009-B03, 2009-B04 & 2009-B05 -- 2009 AE16, 2009 AD16, 2009 AC16
704LINEAR in New Mexico, 26 in MPECs 2009-B03, 2009-B04, 2009-B05, 2009-B06, 2009-B07, 2009-B08 & 2009-B09 -- 2009 AH16, 2009 AG16, 2009 AF16, 2009 AE16, 2009 AD16, 2009 AC16, 2008 YR27, 2008 YG3, 2008 XE3, 2007 UY1, 2007 MK13, 2000 BL19, 1994 AW1, 89355, 54071, 25916, 20460, 162900, 162004, 153953, 143651, 142348, 141765, 136849, 111253, 1620
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2009-B06 -- 136849
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2009-B09 -- 2009 AH16
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2009-B06 -- 2008 TD
B67Mirasteilas Obs. in Switzerland, 5 in MPEC 2009-B06 -- 89355, 154715, 12711, 111253, 7358
213Montcabre Obs. in Spain, 1 in MPEC 2009-B04 -- 2009 AD16
900Moriyama Obs. in Japan, 2 in MPECs 2009-B04 & 2009-B05 -- 2009 AE16, 2009 AD16
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPEC 2009-B06 -- 2009 AM, 2003 RB, 203471, 162361, 154988, 152742, 5189
B49Paus Obs. in Spain, 1 in MPEC 2009-B04 -- 2009 AD16
H11Rodeo Obs. in New Mexico, 1 in MPEC 2009-B07 -- 2009 AF16
C494HI1-A instrument (4) aboard STEREO-A in heliocentric orbit leading Earth, 1 in MPEC 2009-B10 -- C/2009 A1
C504HI1-B instrument (4) aboard STEREO-B in heliocentric orbit trailing Earth, 2 in MPEC 2009-B10 -- C/2009 A1, C/2008 W1
854Sabino Canyon Obs. in Arizona, 6 in MPECs 2009-B03, 2009-B04, 2009-B05, 2009-B07, 2009-B08 & 2009-B09 -- 2009 AH16, 2009 AG16, 2009 AF16, 2009 AE16, 2009 AD16, 2009 AC16
104San Marcello Pistoiese Obs. in Italy, 3 in MPECs 2009-B03, 2009-B04 & 2009-B07 -- 2009 AF16, 2009 AD16, 2009 AC16
204Schiaparelli Obs. in Italy, 5 in MPEC 2009-B06 -- 2008 YY32, 2008 YG30, 2008 UC, 1994 AW1, 137805
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2009-B06 & 2009-B11 -- 2009 AM15, 2009 AK15, 2007 EJ26, 87024
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2009-B06 -- 2001 BJ16, 159368
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2009-B06 & 2009-B08 -- 2009 AL15, 2009 AL, 2009 AG16, 2008 YT30, 2008 YM27, 2008 YM2, 2008 YJ3, 2008 YG29, 2008 YE30, 2006 SO19, 2006 FD51, 2005 AY28, 2004 BH41, 2003 BH84, 2000 YJ29
A78Stia Obs. in Italy, 4 in MPEC 2009-B06 -- 2009 AM, 2008 YZ32, 2008 YR27, 111253
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-B05 -- 2009 AE16
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2009-B06 -- 7358, 1627
G56Walnut Creek Obs. in northern California, 2 in MPECs 2009-B04 & 2009-B06 -- 2009 AD16, 2006 AS2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 January '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.
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
2009 ALNEODyS15572057-209024.69e-08-5.97-5.990NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2009/01/01.300 to 2009/01/17.147."
JPL Sentry15562057-210631.7e-07-5.48-5.650JPL: "Analysis based on 41 observations spanning 15.846 days (2009-Jan-01.29931 to 2009-Jan-17.14576)." Diameter approximately 0.150 km. from mean, weighted H=21.8.

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 January '09

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

1928Grabbed MPEC 2009-B11 - 2007 EJ26 - see above
1714Grabbed MPEC 2009-B10 - Comets C/2008 W1, 2009 A1 (STEREO) - see above
1626Grabbed MPEC 2009-B07 - 2009 AF16 - see above
Grabbed MPEC 2009-B08 - 2009 AG16 - see above
Grabbed MPEC 2009-B09 - 2009 AH16 - see above
1557Noted that NEODyS has updated its 2009 AL risk assessment - see above
Grabbed MPEC 2009-B06 - Daily Orbit Update - see above
1556Noted that JPL Sentry has updated its 2009 AL risk assessment - see above
0258Grabbed MPEC 2009-B03 - 2009 AC16 - see above
Grabbed MPEC 2009-B04 - 2009 AD16 - see above
Grabbed MPEC 2009-B05 - 2009 AE16 - see above