Contents  on 15 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 15 March '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. All of these were "one nighters." So far The Tracking News has counted a total of 29 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 15 March '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-E128 - "13:52 UT" - 2008 EP85


MPEC 2008-E127 - "12:10 UT" - 2008 EM85


MPEC 2008-E126 - "12:07 UT" - 2008 EL85


MPEC 2008-E125 - "12:04 UT" - 2008 EK85


MPEC 2008-E124 - "12:02 UT" - 2008 EJ85


MPEC 2008-E123 - "11:59 UT" - 2008 EH85


MPEC 2008-E122 - "11:55 UT" - 2008 EG85


MPEC 2008-E121 - "11:52 UT" - 2008 EF85


MPEC 2008-E120 - "11:49 UT" - 2008 EE85


MPEC 2008-E119 - "11:42 UT" - 2008 ED85


MPEC 2008-E118 - "11:36 UT" - 2008 EC85


MPEC 2008-E117 - "11:33 UT" - 2008 EB85


<< DOU on 15 Mar. '08 >>  MPEC 2008-E116 - "06:09 UT" - Daily Orbit Update


MPEC 2008-E115 - "04:05 UT" - 2008 EZ84

Observers  on 15 March '08

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-E116 -- 2008 EN6
E18BDI Obs., 1 in MPEC 2008-E116 -- 21088
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2008-E115 & 2008-E116 -- 2008 EZ84, 2008 CB22, 2006 DU62, 2006 BG55, 2000 XK44, 170891, 144922, 5587, 3552
B15Inastars Obs. in Germany, 1 in MPEC 2008-E116 -- 2003 DC14
701Junk Bond Obs. in Arizona, 1 in MPEC 2008-E116 -- 2008 EX84
704LINEAR in New Mexico, 8 in MPECs 2008-E116, 2008-E120, 2008-E121, 2008-E122, 2008-E124, 2008-E125, 2008-E126 & 2008-E127 -- 2008 EM85, 2008 EL85, 2008 EK85, 2008 EJ85, 2008 EG85, 2008 EF85, 2008 EE85, 85628
118Modra Obs. in Slovakia, 2 in MPECs 2008-E115 & 2008-E120 -- 2008 EZ84, 2008 EE85
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2008-E116, 2008-E117, 2008-E118, 2008-E119, 2008-E120, 2008-E121, 2008-E122, 2008-E123, 2008-E124, 2008-E125, 2008-E126, 2008-E127 & 2008-E128 -- 2008 EP85, 2008 EM85, 2008 EL85, 2008 EK85, 2008 EJ85, 2008 EH85, 2008 EG85, 2008 EF85, 2008 EE85, 2008 ED85, 2008 EC85, 2008 EB85, 2004 RY109, 3552
A13Naef Obs. in Switzerland, 1 in MPEC 2008-E116 -- 2008 EO6
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2008-E120, 2008-E124, 2008-E125 & 2008-E126 -- 2008 EL85, 2008 EK85, 2008 EJ85, 2008 EE85
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-E116 -- 2003 QZ30
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2008-E116 & 2008-E118 -- 2008 EX5, 2008 EC85, 2008 AF4

Impact Risk Monitoring  on 15 March '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 EH85JPL Sentry15342047-206133.5e-10-8.32-8.760JPL: "Analysis based on 20 observations spanning 1.8660 days (2008-Mar-13.37475 to 2008-Mar-15.2408)." Diameter approximately 0.078 km. from mean, weighted H=23.2.
2008 EZ84JPL Sentry15012072-210852.9e-05-5.32-5.410JPL: "Analysis based on 14 observations spanning 2.6974 days (2008-Mar-12.43046 to 2008-Mar-15.12783)." Diameter approximately 0.020 km. from mean, weighted H=26.2.
NEODyS15012072-208933.95e-05-5.19-5.300NEODyS: "Based on 17 optical observations (of which 3 are rejected as outliers) from 2008/03/12.431 to 2008/03/15.129."
2008 EV84NEODyS1501204114.85e-07-6.31-6.310NEODyS: "Based on 18 optical observations (of which 1 are rejected as outliers) from 2008/03/11.219 to 2008/03/12.257."
JPL Sentry01532041-210628.9e-07-6.01-6.010JPL: "Analysis based on 17 observations spanning 1.0376 days (2008-Mar-11.2187 to 2008-Mar-12.25627)." Diameter approximately 0.029 km. from mean, weighted H=25.3.
2008 EX5NEODyS15022044-2089862.35e-05-4.21-4.830NEODyS: "Based on 56 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/03/15.215."
JPL Sentry15012050-2101512.3e-05-4.23-4.850JPL: "Analysis based on 55 observations spanning 10.819 days (2008-Mar-04.39523 to 2008-Mar-15.21397)." Diameter approximately 0.059 km. from mean, weighted H=23.8.
2008 AF4NEODyS18042078-209144.02e-05-2.06-2.061NEODyS: "Based on 586 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/03/15.122. NOTE: The Virtual Impactor in 2089/01/09.479 ... is rated as Torino Scale 1."
2007 TL16JPL Sentry01532074-2095136.1e-06-6.01-6.170JPL: "Analysis based on 43 observations spanning 10.115 days (2007-Oct-09.28741 to 2007-Oct-19.40212)." Diameter approximately 0.019 km. from mean, weighted H=26.2.

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 15 March '08

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

1804Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
1534Noted that JPL Sentry has posted 2008 EH85 as an impact risk - see above
1502Noted that NEODyS has updated its 2008 EX5 risk assessment - see above
Grabbed MPEC 2008-E116 - Daily Orbit Update - see above
1501Noted that NEODyS has posted 2008 EV84 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 EX5 risk assessment - see above
Noted that JPL Sentry has posted 2008 EZ84 as an impact risk - see above
Noted that NEODyS has posted 2008 EZ84 as an impact risk - see above
Grabbed MPEC 2008-E117 - 2008 EB85 - see above
Grabbed MPEC 2008-E118 - 2008 EC85 - see above
Grabbed MPEC 2008-E119 - 2008 ED85 - see above
Grabbed MPEC 2008-E120 - 2008 EE85 - see above
Grabbed MPEC 2008-E121 - 2008 EF85 - see above
Grabbed MPEC 2008-E122 - 2008 EG85 - see above
Grabbed MPEC 2008-E123 - 2008 EH85 - see above
Grabbed MPEC 2008-E124 - 2008 EJ85 - see above
Grabbed MPEC 2008-E125 - 2008 EK85 - see above
Grabbed MPEC 2008-E126 - 2008 EL85 - see above
Grabbed MPEC 2008-E127 - 2008 EM85 - see above
Grabbed MPEC 2008-E128 - 2008 EP85 - see above
0522Grabbed MPEC 2008-E115 - 2008 EZ84 - see above
0153Noted that JPL Sentry has updated its 2007 TL16 risk assessment - see above
Noted that JPL Sentry has posted 2008 EV84 as an impact risk - see above