Contents  on 26 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 26 March '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter."

New MPECs  on 26 March '08

Minor Planet Electronic Circulars

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


<< DOU on 26 Mar. '08 >>  MPEC 2008-F33 - "06:07 UT" - Daily Orbit Update


MPEC 2008-F32 - "03:16 UT" - Comets C/2002 Q8, 2008 E4, 2008 F1 (SOHO)

Observers  on 26 March '08

Thirteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 22 in MPEC 2008-F33 -- 2008 EY68, 2008 EY5, 2008 EN82, 2008 EK1, 2008 EJ85, 2008 EE9, 2008 EE, 2008 DW, 2008 DV, 2008 DK5, 2008 DJ5, 2008 DJ, 2008 DC, 2008 CS116, 2008 CN1, 2008 CD22, 2008 BC22, 2008 AE, 2005 TR50, 2005 JS108, 2003 AD1, 36183
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2008-F33 -- 2008 ED69, 2007 PA8, 20826, 152942, 7350, 3552
448Desert Moon Obs. in New Mexico, 5 in MPEC 2008-F33 -- 2008 EO6, 2008 EN82, 2008 EE85, 2008 CM, 2005 NB7
734Farpoint Obs. in Kansas, 1 in MPEC 2008-F33 -- 2008 AF4
595Farra d'Isonzo Obs. in Italy, 3 in MPEC 2008-F33 -- 2008 EY68, 2008 EM9, 2008 EE85
809|program code "|" via La Silla in Chile, 3 in MPEC 2008-F33 -- 2008 EQ7, 2008 DJ5, 162173
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-F33 -- 2007 GG
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2008-F33 -- 2008 EM85, 2008 DE, 2008 AE, 2006 BG55, 2003 GW
H85Silver Spring Obs. in Maryland, 2 in MPEC 2008-F33 -- 2008 EE85, 2008 DY
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPEC 2008-F32 -- C/2008 F1, C/2008 E4, C/2002 Q8
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2008-F33 -- 2004 CR2, 53789, 164222, 138205, 136618, 3552
291Spacewatch 1.8m telescope in Arizona, 11 in MPEC 2008-F33 -- 2008 EZ97, 2008 EX5, 2008 ER7, 2008 EA9, 2008 DW, 2008 DL5, 2008 DK5, 2008 CA22, 2007 XA23, 2004 RH340, 2002 SZ
A48Verona Obs. in Italy, 2 in MPEC 2008-F33 -- 2008 EM85, 2008 EE85

Impact Risk Monitoring  on 26 March '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 EA9NEODyS16192043-2089243.87e-05-6.11-6.620NEODyS: "Based on 35 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/25.263."
JPL Sentry14182068-210552.1e-05-6.40-6.640JPL: "Analysis based on 34 observations spanning 18.856 days (2008-Mar-06.40551 to 2008-Mar-25.26184)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 ER7NEODyS14192077-209031.66e-06-3.35-3.400NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/26.244."
JPL Sentry14182077-2104122.7e-06-3.17-3.410JPL: "Analysis based on 54 observations spanning 19.907 days (2008-Mar-06.33608 to 2008-Mar-26.24323)." Diameter approximately 0.331 km. from mean, weighted H=20.0.
2008 EX5NEODyS14192044-2089791.86e-05-4.37-4.710NEODyS: "Based on 61 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/03/25.384."
JPL Sentry14182060-2083271.6e-05-4.42-4.840JPL: "Analysis based on 60 observations spanning 20.988 days (2008-Mar-04.39523 to 2008-Mar-25.3829)." Diameter approximately 0.057 km. from mean, weighted H=23.9.
2008 AF4JPL Sentry16182089-210074.0e-05-2.08-2.301JPL: "Analysis based on 591 observations spanning 75.813 days (2008-Jan-10.39652 to 2008-Mar-26.20983)." Diameter approximately 0.390 km. from mean, weighted H=19.7.
NEODyS1419208922.29e-05-2.30-2.301NEODyS: "Based on 595 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/03/26.211. NOTE: The Virtual Impactor in 2089/01/09.478 ... is rated as Torino Scale 1."

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 26 March '08

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

1619Noted that NEODyS has updated its 2008 EA9 risk assessment - see above
1618Noted that JPL Sentry has updated its 2008 AF4 risk assessment - see above
1419Noted that NEODyS has updated its 2008 AF4 risk assessment - see above
Noted that NEODyS has updated its 2008 ER7 risk assessment - see above
Noted that NEODyS has updated its 2008 EX5 risk assessment - see above
1418Noted that JPL Sentry has updated its 2008 EA9 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 EX5 risk assessment - see above
Grabbed MPEC 2008-F33 - Daily Orbit Update - see above
The NEOCP has become active
0603Grabbed MPEC 2008-F32 - Comets C/2002 Q8, 2008 E4, 2008 F1 (SOHO) - see above