Contents  on 31 March '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 31 March '08

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of sixteen 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 31 March '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been nine MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-F66 - "21:06 UT" - 2008 FY6


MPEC 2008-F65 - "21:01 UT" - 2008 FX6


MPEC 2008-F64 - "20:57 UT" - 2008 FW6


MPEC 2008-F63 - "20:46 UT" - Observations of Comets


MPEC 2008-F62 - "20:02 UT" - Comet C/2008 C1 (Chen-Gao)


MPEC 2008-F61 - "17:14 UT" - 2008 FU6


MPEC 2008-F60 - "17:09 UT" - 2008 FT6


MPEC 2008-F59 - "17:07 UT" - 2008 FS6


<< DOU on 31 Mar. '08 >>  MPEC 2008-F58 - "06:07 UT" - Daily Orbit Update

Observers  on 31 March '08

A total of 67 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 8 in MPEC 2008-F63 -- C/2007 U1, C/2007 T1, C/2007 G1, C/2007 B2, C/2005 L3, 183P, 26P, 17P
B03Alter Satzberg Obs. in Austria, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
J51Atlante Obs. in the Canary Islands, 7 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 S5, C/2006 Q1, C/2002 VQ94, 70P
467Auckland Obs. in New Zealand, 7 in MPEC 2008-F63 -- C/2008 A1, C/2007 W1, C/2007 T1, C/2007 Q3, C/2007 M2, C/2007 B2, 8P
A81Balzaretto Obs. in Italy, 2 in MPEC 2008-F63 -- C/2007 M2, C/2007 B2
B59Borken Obs. in Germany, 2 in MPEC 2008-F63 -- C/2007 T5, 124P
235CAST Obs. in Italy, 9 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 S5, 110P, 93P, 46P, 29P, 17P
J79Calarreona Obs. in Spain, 5 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 110P, 93P, 74P, 17P
B20Carmelita Obs. in Spain, 4 in MPEC 2008-F63 -- C/2007 W1, C/2007 B2, C/2006 S5, 124P
703Catalina Sky Survey (CSS) in Arizona, 16 in MPECs 2008-F58, 2008-F61 & 2008-F63 -- 2008 FU6, C/2007 M2, C/2007 B2, 2003 GW, 2003 FY6, 2002 FW5, 85236, 53789, 178871, 175921, 170891, 5587, 4954, 3554, 179P, 70P
A77Chante-Perdrix Obs. in France, 6 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, 79P, 46P, 17P, 4P
448Desert Moon Obs. in New Mexico, 6 in MPEC 2008-F58 -- 2008 EO6, 2008 DJ5, 2008 CR118, 2008 CB22, 2008 BT18, 2003 LO6
808El Leoncito Obs. in Argentina, 14 in MPECs 2008-F58 & 2008-F63 -- 2008 EM9, C/2007 W1, C/2007 B2, C/2006 Q1, 2003 GW, 1994 AW1, 96189, 21088, 173689, 162567, 155110, 153591, 5836, 3691
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2008-F63 -- 79P
B21Gaisberg Obs. in Austria, 1 in MPEC 2008-F59 -- 2008 FS6
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-F63 -- C/2007 B2
651Grasslands Obs. in Arizona, 3 in MPECs 2008-F58, 2008-F59 & 2008-F61 -- 2008 FU6, 2008 FS6, 2003 FY6
J95Great Shefford Obs. in England, 3 in MPECs 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6
H51Greiner Research Obs. (GRO) in Wisconsin, 3 in MPECs 2008-F58 & 2008-F63 -- 2005 GG, 197P, 46P
458Guadarrama Obs. in Spain, 3 in MPEC 2008-F63 -- 124P, 29P, 17P
442Gualba Obs. in Spain, 2 in MPEC 2008-F63 -- 46P, 29P
A17Guidestar Obs. in Germany, 1 in MPEC 2008-F61 -- 2008 FU6
B15Inastars Obs. in Germany, 1 in MPEC 2008-F58 -- 40267
246KLENOT in the Czech Republic, 2 in MPECs 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6
415Kambah Obs. in the Australian Capital Territory, 3 in MPEC 2008-F63 -- C/2007 W1, C/2006 Q1, 8P
585Kiev Comet Station in the Ukraine, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 110P, 46P
704LINEAR in New Mexico, 21 in MPECs 2008-F58, 2008-F61, 2008-F63, 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6, 2008 FU6, C/2007 Y1, C/2007 U1, C/2007 M2, C/2006 S5, 2005 RD34, 89830, 144922, 141432, 1866, 1864, 179P, 110P, 93P, 79P, 29P, 22P, 4P
699LONEOS in Arizona, 1 in MPEC 2008-F63 -- P/1998 X1
J76La Murta Obs. in Spain, 5 in MPEC 2008-F63 -- C/2007 M2, C/2007 B2, 93P, 70P, 29P
J38La Vara Obs. in Spain, 8 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 S5, 124P, 93P, 29P, 17P
B57Laietania Obs. in Spain, 5 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 183P, 124P, 46P, 17P
J55Los Altos de Arguineguin Obs. in the Canary Islands, 2 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 17P
844Los Molinos Obs. in Uruguay, 2 in MPEC 2008-F63 -- C/2007 B2, 8P
130Lumezzane Obs. in Italy, 3 in MPEC 2008-F63 -- P/2007 C2, C/2006 S5, 183P
560Madonna di Dossobuono Obs. in Italy, 8 in MPECs 2008-F58 & 2008-F63 -- 2008 FO, 2008 EE85, 2008 EB32, 2007 RX19, 2003 GW, 183P, 180P, 124P
A06Mataro Obs. in Spain, 6 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, 65P, 46P, 29P
118Modra Obs. in Slovakia, 3 in MPECs 2008-F59, 2008-F61 & 2008-F64 -- 2008 FW6, 2008 FU6, 2008 FS6
J46Montana Blanca Obs. in the Canary Islands, 4 in MPECs 2008-F58 & 2008-F63 -- 1864, 46P, 29P, 17P
213Montcabre Obs. in Spain, 4 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 B2, 46P, 7P
945Monte Deva Obs. in Spain, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 124P, 46P
900Moriyama Obs. in Japan, 2 in MPEC 2008-F63 -- C/2007 Y1, C/2007 D1
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2008-F61, 2008-F63 & 2008-F64 -- 2008 FW6, 2008 FU6, P/2006 B7, 74P
J93Mt. Tuffley Obs. in England, 2 in MPEC 2008-F63 -- C/2005 L3, 124P
J47Nazaret Obs. in Spain, 11 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 B2, C/2006 S5, 158P, 124P, 65P, 46P, 29P, 22P, 17P, 7P
423North Ryde Obs. in New South Wales, 3 in MPEC 2008-F63 -- C/2008 A1, C/2007 Y2, C/2007 Q3
B49Paus Obs. in Spain, 1 in MPEC 2008-F63 -- C/2007 B2
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
H06%E. Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-F61 -- 2008 FU6
473Remanzacco Obs. in Italy, 7 in MPECs 2008-F63, 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6, C/2007 W1, 70P, 46P, 7P
939Rodeno Obs. in Spain, 8 in MPEC 2008-F63 -- C/2007 W1, C/2007 B2, C/2006 S5, 180P, 124P, 65P, 46P, 29P
461SZTE Asteroid Program (SZTE) in Hungary, 4 in MPECs 2008-F58, 2008-F61 & 2008-F63 -- 2008 FU6, 2008 EA32, C/2005 L3, C/2002 VQ94
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6
104San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2008-F58 & 2008-F63 -- 2008 FO, C/2007 W1, C/2007 M2, C/2007 D1, C/2007 B2
204Schiaparelli Obs. in Italy, 13 in MPECs 2008-F58, 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 Y1, C/2007 T5, C/2007 T1, P/2007 C2, C/2006 S5, 2006 FK9, P/2005 Y2, C/2002 VQ94, 179P, 124P, 22P, 17P
071Smolyan Obs. in Bulgaria, 6 in MPEC 2008-F63 -- C/2007 U1, C/2007 B2, C/2005 L3, 74P, 65P, 17P
691Spacewatch 0.9m telescope in Arizona, 7 in MPECs 2008-F58, 2008-F59, 2008-F60 & 2008-F63 -- 2008 FT6, 2008 FS6, P/2006 B7, 136618, 102873, 5626, 158P
291Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2008-F58, 2008-F59 & 2008-F60 -- 2008 FT6, 2008 FS6, 2008 FN, 2008 FK, 2008 FG, 2008 FF5, 2008 EY68, 2008 ET7, 2008 ER7, 2008 EJ, 2008 EC69, 2008 EB9, 2008 EA9, 2008 DJ, 2008 AN33, 2005 GP21, 2002 AJ129
A97Stammersdorf Obs. in Austria, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, 17P
147Suno Obs. in Italy, 2 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 197P
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
A55Vallemare di Borbona Obs. in Italy, 2 in MPECs 2008-F58 & 2008-F65 -- 2008 FX6, 2003 FY6
J70Vega del Thader Obs. in Spain, 7 in MPEC 2008-F63 -- C/2007 W1, C/2007 T1, C/2007 B2, C/2006 S5, 124P, 65P, 29P
A48Verona Obs. in Italy, 1 in MPEC 2008-F63 -- C/2007 W1
H47Vicksburg Obs. in Mississippi, 4 in MPEC 2008-F63 -- C/2007 T5, C/2006 S5, 180P, 124P
B42Vitebsk Obs. in Belarus, 11 in MPEC 2008-F63 -- C/2007 G1, C/2007 B2, C/2005 L3, 197P, 124P, 110P, 79P, 70P, 65P, 46P, 22P
C42Xingming Obs. in China, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, 46P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 31 March '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 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 FW6JPL Sentry2355206512.0e-10-7.68-7.680JPL: "Analysis based on 31 observations spanning 1.6644 days (2008-Mar-30.18598 to 2008-Mar-31.85041)." Diameter approximately 0.240 km. from mean, weighted H=20.7.
2008 FT6JPL Sentry19172020-209983.5e-09-4.17-4.400JPL: "Analysis based on 12 observations spanning 1.9373 days (2008-Mar-29.3796 to 2008-Mar-31.31691)." Diameter approximately 1.400 km. from mean, weighted H=16.9.
2008 FF5JPL Sentry14342029-208784.4e-07-4.73-5.160JPL: "Analysis based on 31 observations spanning 1.8732 days (2008-Mar-28.32219 to 2008-Mar-30.19535)." Diameter approximately 0.082 km. from mean, weighted H=23.1.
NEODyS14342029-208774.33e-07-4.71-5.060NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/03/30.196."
2008 FNJPL Sentry14342020-2105527.9e-08-3.17-3.880JPL: "Analysis based on 22 observations spanning 2.8789 days (2008-Mar-27.45915 to 2008-Mar-30.33805)." Diameter approximately 0.783 km. from mean, weighted H=18.2.
NEODyS14342020-2090495.81e-08-3.26-3.950NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/03/27.460 to 2008/03/30.339."
2008 EA9JPL Sentry14342061-2106114.0e-05-6.11-6.660JPL: "Analysis based on 50 observations spanning 23.815 days (2008-Mar-06.40551 to 2008-Mar-30.22099)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
NEODyS14342063-2090164.13e-05-6.09-6.660NEODyS: "Based on 51 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/30.222."
2008 ER7JPL Sentry14342077-210473.0e-06-3.20-3.510JPL: "Analysis based on 68 observations spanning 24.869 days (2008-Mar-06.33608 to 2008-Mar-31.20471)." Diameter approximately 0.320 km. from mean, weighted H=20.1.
NEODyS14342073-208945.29e-07-3.87-4.160NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/31.205."

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 31 March '08

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

2355Noted that JPL Sentry has posted 2008 FW6 as an impact risk - see above
2209Grabbed MPEC 2008-F66 - 2008 FY6 - see above
2105Grabbed MPEC 2008-F62 - Comet C/2008 C1 (Chen-Gao) - see above
Grabbed MPEC 2008-F63 - Observations of Comets - see above
Grabbed MPEC 2008-F64 - 2008 FW6 - see above
Grabbed MPEC 2008-F65 - 2008 FX6 - see above
1917Noted that JPL Sentry has posted 2008 FT6 as an impact risk - see above
1734Grabbed MPEC 2008-F61 - 2008 FU6 - see above
1714Grabbed MPEC 2008-F59 - 2008 FS6 - see above
Grabbed MPEC 2008-F60 - 2008 FT6 - see above
1434Noted that JPL Sentry has updated its 2008 EA9 risk assessment - see above
Noted that NEODyS has updated its 2008 EA9 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above
Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 FF5 risk assessment - see above
Noted that NEODyS has updated its 2008 FF5 risk assessment - see above
Noted that JPL Sentry has updated its 2008 FN risk assessment - see above
Noted that NEODyS has updated its 2008 FN risk assessment - see above
Grabbed MPEC 2008-F58 - Daily Orbit Update - see above