Contents  on 29 July '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 29 July '08

The MPC's NEO Confirmation Page has 12 listings: 6 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and six updated listings. Of these, eleven were "one nighters." So far The Tracking News has counted a total of eighteen 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 29 July '08

Minor Planet Electronic Circulars

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


MPEC 2008-O47 - "18:16 UT" - Observations of Comets


MPEC 2008-O46 - "17:52 UT" - Comet C/2008 N1 (Holmes)


MPEC 2008-O45 - "17:46 UT" - Comet P/2008 L2 (Hill)


MPEC 2008-O44 - "17:34 UT" - Comet 51P/Harrington


MPEC 2008-O43 - "14:09 UT" - 2008 OY2


MPEC 2008-O42 - "14:05 UT" - 2008 OX2


MPEC 2008-O41 - "13:59 UT" - 2008 OV2


<< DOU on 29 July '08 >>  MPEC 2008-O40 - "06:08 UT" - Daily Orbit Update

Observers  on 29 July '08

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

CodeObserver / observatory
349Ageo Obs. in Japan, 3 in MPEC 2008-O47 -- C/2008 A1, C/2007 N3, 19P
J97Alginet Obs. in Spain, 3 in MPEC 2008-O47 -- C/2005 L3, 68P, 6P
B03Alter Satzberg Obs. in Austria, 2 in MPECs 2008-O40 & 2008-O43 -- 2008 OY2, 2008 OX1
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-O40 -- 2008 GF
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-O47 -- 6P
I32Beta Orionis Obs. in Argentina, 5 in MPEC 2008-O47 -- C/2008 A1, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 V1
300Bisei Spaceguard Center in Japan, 2 in MPEC 2008-O47 -- C/2008 J1, C/2007 N3
215Buchloe Obs. in Germany, 2 in MPEC 2008-O47 -- C/2006 S3, 187P
235CAST Obs. in Italy, 5 in MPEC 2008-O47 -- C/2008 J1, C/2007 W3, C/2007 N3, C/2005 L3, 6P
B20Carmelita Obs. in Spain, 5 in MPEC 2008-O47 -- C/2008 J1, C/2006 OF2, C/2005 L3, 68P, 6P
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2008-O44, 2008-O46 & 2008-O47 -- C/2008 N1, 61P, 51P
A77Chante-Perdrix Obs. in France, 5 in MPECs 2008-O46 & 2008-O47 -- C/2008 N1, C/2008 J6, C/2008 J5, C/2008 J1, 6P
I31Cristo Rey Obs. in Argentina, 1 in MPEC 2008-O47 -- 186P
639Dresden Obs. in Germany, 1 in MPEC 2008-O40 -- 90403
J27El Guijo Obs. in Spain, 1 in MPEC 2008-O47 -- C/2006 OF2
808El Leoncito Obs. in Argentina, 4 in MPEC 2008-O47 -- P/2008 J2, C/2007 G1, C/2007 B2, 186P
151Eschenberg Obs. in Switzerland, 1 in MPEC 2008-O47 -- C/2008 J6
762Four Winds Obs. in Michigan, 1 in MPEC 2008-O47 -- 6P
372Geisei Obs. in Japan, 11 in MPECs 2008-O46 & 2008-O47 -- C/2008 N1, C/2008 J6, C/2008 J5, P/2008 J2, C/2008 J1, C/2007 W1, C/2007 N3, C/2006 OF2, C/2005 L3, 15P, 6P
E94Gisborne Obs., 4 in MPEC 2008-O47 -- C/2008 A1, C/2007 N3, C/2007 G1, 6P
A07Gretz-Armainvilliers Obs. in France, 1 in MPEC 2008-O47 -- C/2008 J1
379Hamamatsu-Yuto Obs. in Japan, 6 in MPECs 2008-O40 & 2008-O47 -- 2008 OX1, C/2006 W3, C/2006 OF2, 2005 RC34, C/2005 L3, 6P
750Hobbs Obs. in Wisconsin, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
D78Iga-Ueno Obs. in Japan, 4 in MPEC 2008-O47 -- C/2007 W1, C/2006 OF2, 15P, 6P
B19Iluro Obs. in Spain, 7 in MPECs 2008-O40 & 2008-O47 -- C/2008 J6, C/2008 J1, 2005 RC34, 164400, 8567, 5332, 6P
B15Inastars Obs. in Germany, 2 in MPECs 2008-O40 & 2008-O47 -- 105140, 6P
J39Ingenio Obs. in the Canary Islands, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
J28Jaen Obs. in Spain, 2 in MPEC 2008-O47 -- C/2006 W3, C/2006 OF2
246KLENOT in the Czech Republic, 9 in MPECs 2008-O40, 2008-O41, 2008-O42, 2008-O43, 2008-O44, 2008-O45 & 2008-O46 -- 2008 OY2, 2008 OX2, 2008 OV2, 2008 OO, 2008 OM, C/2008 N1, 2008 MR1, P/2008 L2, 51P
415Kambah Obs. in the Australian Capital Territory, 2 in MPEC 2008-O47 -- C/2008 E3, C/2006 K4
J38La Vara Obs. in Spain, 8 in MPECs 2008-O46 & 2008-O47 -- C/2008 N1, C/2008 J1, C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 6P
J59Linceo Obs. in Spain, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
130Lumezzane Obs. in Italy, 2 in MPEC 2008-O47 -- C/2008 H1, C/2007 JA21
J40Malaga Obs. in Spain, 1 in MPEC 2008-O47 -- 59P
A02Masia Cal Maciarol Modul 8 in Spain, 1 in MPEC 2008-O47 -- 6P
232Masquefa Obs. in Spain, 9 in MPEC 2008-O47 -- C/2008 J1, C/2007 W1, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 67P, 47P, 6P
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-O40 -- 2008 OM, 2008 NB
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-O47 -- 6P
213Montcabre Obs. in Spain, 5 in MPEC 2008-O47 -- C/2007 W1, C/2007 N3, 67P, 47P, 6P
945Monte Deva Obs. in Spain, 6 in MPEC 2008-O47 -- C/2008 J1, C/2007 N3, C/2006 OF2, C/2005 L3, 47P, 6P
900Moriyama Obs. in Japan, 21 in MPECs 2008-O45 & 2008-O47 -- P/2008 L2, C/2008 J6, C/2008 J5, C/2008 J1, C/2007 W3, C/2007 W1, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 W3, C/2006 Q1, C/2006 OF2, C/2005 S4, C/2005 L3, 187P, 68P, 67P, 47P, 19P, 15P, 6P
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2008-O41, 2008-O42 & 2008-O43 -- 2008 OY2, 2008 OX2, 2008 OV2
A13Naef Obs. in Switzerland, 3 in MPECs 2008-O40, 2008-O46 & 2008-O47 -- C/2008 N1, C/2006 S3, 162186
D81Nagano Obs., 1 in MPEC 2008-O47 -- C/2007 N3
J47Nazaret Obs. in Spain, 7 in MPEC 2008-O47 -- C/2007 W1, C/2007 N3, C/2005 L3, 67P, 61P, 47P, 6P
J69North Obs. in England, 1 in MPEC 2008-O40 -- 2005 RC34
B49Paus Obs. in Spain, 4 in MPEC 2008-O47 -- C/2008 J6, C/2007 W1, C/2005 S4, 6P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPECs 2008-O40 & 2008-O47 -- 2008 MU1, C/2008 J1, C/2007 W1, C/2006 W3, C/2006 S3, C/2006 OF2, 2005 RC34, 2003 OB4, 2001 TA45, 8567, 6P
941Pla D'Arguines Obs. in Spain, 1 in MPEC 2008-O47 -- 6P
J53Posadas Obs. in Spain, 6 in MPEC 2008-O47 -- C/2008 J6, C/2008 J1, C/2007 N3, C/2006 OF2, C/2005 L3, 6P
H06RAS Obs. Mayhill in New Mexico, 2 in MPEC 2008-O47 -- C/2008 J1, C/2007 N3
473Remanzacco Obs. in Italy, 3 in MPECs 2008-O40 & 2008-O47 -- 2008 OO1, C/2008 J5, C/2005 L3
939Rodeno Obs. in Spain, 6 in MPEC 2008-O47 -- C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 68P, 6P
104San Marcello Pistoiese Obs. in Italy, 2 in MPEC 2008-O47 -- C/2008 J1, C/2008 H1
B61Sant Cugat del Valles Obs. in Spain, 1 in MPEC 2008-O47 -- C/2005 L3
B38Santa Mama Obs. in Italy, 5 in MPEC 2008-O40 -- 2008 MU1, 90403, 35107, 174050, 137170
204Schiaparelli Obs. in Italy, 12 in MPEC 2008-O47 -- C/2008 J6, C/2007 W3, C/2007 N3, C/2007 JA21, C/2007 G1, C/2005 S4, C/2005 L3, 187P, 68P, 46P, 26P, 6P
E12Siding Spring Survey (SSS) in New South Wales, 16 in MPECs 2008-O40, 2008-O43 & 2008-O47 -- 2008 OY2, 2008 OX1, 2008 OO1, 2008 ON, 2008 OM, 2008 NS1, 2008 NO3, C/2008 J5, C/2008 E3, C/2007 G1, C/2007 B2, C/2006 V1, C/2006 Q1, C/2006 K4, 79P, 47P
B40Skylive Obs. in Italy, 1 in MPEC 2008-O47 -- 59P
A97Stammersdorf Obs. in Austria, 1 in MPEC 2008-O47 -- 6P
H67Stonegate Obs. in Michigan, 1 in MPEC 2008-O40 -- 35107
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-O40 -- 2008 LW16
B51Vallauris Obs. in France, 1 in MPEC 2008-O47 -- 6P
J70Vega del Thader Obs. in Spain, 5 in MPEC 2008-O47 -- C/2007 W1, C/2007 N3, C/2006 OF2, 46P, 6P
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2008-O47 -- C/2007 N3, 6P
B42Vitebsk Obs. in Belarus, 8 in MPECs 2008-O45 & 2008-O47 -- P/2008 L2, C/2008 J6, C/2008 J1, C/2007 N3, C/2006 W3, C/2005 L3, 26P, 6P
367Yatsuka Obs., 2 in MPEC 2008-O47 -- C/2006 Q1, C/2005 L3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 July '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 OY2JPL Sentry1636209111.9e-08-9.06-9.060JPL: "Analysis based on 20 observations spanning .55592 days (2008-Jul-28.73553 to 2008-Jul-29.29145)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
2008 OX2JPL Sentry16362016-2108822.9e-07-4.07-4.310JPL: "Analysis based on 13 observations spanning .97399 days (2008-Jul-28.42552 to 2008-Jul-29.39951)." Diameter approximately 0.259 km. from mean, weighted H=20.6.
2008 OO1JPL Sentry1417210717.8e-07-6.21-6.210JPL: "Analysis based on 25 observations spanning 2.2057 days (2008-Jul-26.55201 to 2008-Jul-28.75769)." Diameter approximately 0.040 km. from mean, weighted H=24.7.
2008 OONEODyS16342062-208871.12e-06-3.29-3.380NEODyS: "Based on 51 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/07/28.895."
JPL Sentry14172075-2108266.3e-07-3.63-4.250JPL: "Analysis based on 51 observations spanning 2.8024 days (2008-Jul-26.09211 to 2008-Jul-28.89446)." Diameter approximately 0.397 km. from mean, weighted H=19.7.
2008 NO3JPL Sentry1417R E M O V E DJPL: Risk listing removed at 0849 UTC.

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 29 July '08

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

1929Grabbed MPEC 2008-O44 - Comet 51P/Harrington - see above
Grabbed MPEC 2008-O45 - Comet P/2008 L2 (Hill) - see above
Grabbed MPEC 2008-O46 - Comet C/2008 N1 (Holmes) - see above
Grabbed MPEC 2008-O47 - Observations of Comets - see above
1636Noted that JPL Sentry has posted 2008 OX2 as an impact risk - see above
Noted that JPL Sentry has posted 2008 OY2 as an impact risk - see above
1634Noted that NEODyS has updated its 2008 OO risk assessment - see above
1417Noted that JPL Sentry has removed 2008 NO3 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that JPL Sentry has updated its 2008 OO1 risk assessment - see above
Grabbed MPEC 2008-O40 - Daily Orbit Update - see above
Grabbed MPEC 2008-O41 - 2008 OV2 - see above
Grabbed MPEC 2008-O42 - 2008 OX2 - see above
Grabbed MPEC 2008-O43 - 2008 OY2 - see above