Contents  on 2 May '08


NOTE: The Tracking News and this Web site will be updating less often, and at sometimes irregular intervals, until around May 4th.

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 2 May '08

The MPC's NEO Confirmation Page has 7 listings: 7 updated

When last checked at 2336 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of 20 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 2 May '08

Minor Planet Electronic Circulars

As of last check at 2336 UTC, there have been ten MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-J16 - "16:53 UT" - 2008 JJ

MPEC 2008-J15 - "16:49 UT" - 2008 JG

MPEC 2008-J14 - "16:46 UT" - 2008 JE

MPEC 2008-J13 - "16:43 UT" - 2008 HC38

MPEC 2008-J12 - "16:34 UT" - 2008 HB38

MPEC 2008-J11 - "16:30 UT" - 2008 HA38

MPEC 2008-J10 - "16:21 UT" - 2008 HY37

MPEC 2008-J09 - "13:25 UT" - 2006 KM103

MPEC 2008-J08 - "13:20 UT" - 2004 RA11

<< DOU on 2 May '08 >>  MPEC 2008-J07 - "06:07 UT" - Daily Orbit Update

Observers  on 2 May '08

Seventeen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 10 in MPEC 2008-J07 -- 2008 HJ3, 2008 HF2, 2008 HD2, 2008 GW20, 2008 GF, 2008 GE110, 2008 GC110, 2008 EB32, 2000 ER70, 1999 FA
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2008-J14, 2008-J15 & 2008-J16 -- 2008 JJ, 2008 JG, 2008 JE
A77Chante-Perdrix Obs. in France, 1 in MPEC 2008-J07 -- 2008 HW1
J27El Guijo Obs. in Spain, 2 in MPEC 2008-J07 -- 2007 VQ4, 1866
J95Great Shefford Obs. in England, 3 in MPECs 2008-J07, 2008-J13 & 2008-J15 -- 2008 JG, 2008 HQ3, 2008 HC38
B19Iluro Obs. in Spain, 3 in MPEC 2008-J07 -- 2008 EC69, 53319, 35107
682Kanab Obs. in Utah, 1 in MPEC 2008-J15 -- 2008 JG
704LINEAR in New Mexico, 1 in MPEC 2008-J13 -- 2008 HC38
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2008-J07 -- 2008 GV3, 2007 VQ4, 2001 HY7
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-J08 -- 2004 RA11
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2008-J10, 2008-J11, 2008-J12, 2008-J13, 2008-J14, 2008-J15 & 2008-J16 -- 2008 JJ, 2008 JG, 2008 JE, 2008 HY37, 2008 HC38, 2008 HB38, 2008 HA38
J93Mt. Tuffley Obs. in England, 2 in MPEC 2008-J07 -- 4954, 3288
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2008-J13, 2008-J14 & 2008-J15 -- 2008 JG, 2008 JE, 2008 HC38
204Schiaparelli Obs. in Italy, 2 in MPECs 2008-J13 & 2008-J14 -- 2008 JE, 2008 HC38
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2008-J07 & 2008-J10 -- 2008 HY37, 152679
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2008-J09, 2008-J10, 2008-J11, 2008-J12, 2008-J14 & 2008-J15 -- 2008 JG, 2008 JE, 2008 HY37, 2008 HB38, 2008 HA38, 2006 KM103
198Wildberg Obs. in Germany, 3 in MPECs 2008-J07, 2008-J15 & 2008-J16 -- 2008 JJ, 2008 JG, 2008 HW1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 May '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2336 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.





Notes for Today's Latest Risk Assessments
2008 HB38JPL Sentry20592010-21071382.4e-06-3.51-3.700JPL: "Analysis based on 15 observations spanning 2.0935 days (2008-Apr-30.29538 to 2008-May-02.38885)." Diameter approximately 0.153 km. from mean, weighted H=21.7.
2008 HU4NEODyS12432073-208644.35e-07-8.25-8.360NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/05/01.401."
2008 HO3NEODyS12432017-2082279.54e-10-4.82-5.520NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/04/29.339 to 2008/05/01.280."

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 2 May '08

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

2059Noted that JPL Sentry has posted 2008 HB38 as an impact risk - see above
1742Grabbed MPEC 2008-J10 - 2008 HY37 - see above
Grabbed MPEC 2008-J11 - 2008 HA38 - see above
Grabbed MPEC 2008-J12 - 2008 HB38 - see above
Grabbed MPEC 2008-J13 - 2008 HC38 - see above
Grabbed MPEC 2008-J14 - 2008 JE - see above
Grabbed MPEC 2008-J15 - 2008 JG - see above
Grabbed MPEC 2008-J16 - 2008 JJ - see above
1401Grabbed MPEC 2008-J08 - 2004 RA11 - see above
Grabbed MPEC 2008-J09 - 2006 KM103 - see above
1242Noted that NEODyS has posted 2008 HO3 as an impact risk - see above
Noted that NEODyS has posted 2008 HU4 as an impact risk - see above
Grabbed MPEC 2008-J07 - Daily Orbit Update - see above