Contents on 2 May '08
- IAU Minor Planet Center
- Observers -- seventeen observing facilities
- Impact Risk Monitoring -- three objects
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
NOTE: The Tracking News and this Web site will be updating less often, and at sometimes irregular intervals, until around May 4th.
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-J07 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2008-J08 time-stamped "13:20 UT" - 2004 RA11 - see below
- MPEC 2008-J09 time-stamped "13:25 UT" - 2006 KM103 - see below
- MPEC 2008-J10 time-stamped "16:21 UT" - 2008 HY37 - see below
- MPEC 2008-J11 time-stamped "16:30 UT" - 2008 HA38 - see below
- MPEC 2008-J12 time-stamped "16:34 UT" - 2008 HB38 - see below
- MPEC 2008-J13 time-stamped "16:43 UT" - 2008 HC38 - see below
- MPEC 2008-J14 time-stamped "16:46 UT" - 2008 JE - see below
- MPEC 2008-J15 time-stamped "16:49 UT" - 2008 JG - see below
- MPEC 2008-J16 time-stamped "16:53 UT" - 2008 JJ
MPEC 2008-J16 - "16:53 UT" - 2008 JJ
- K08J00J 2008 JJ (i=44.0°, H=18.8 ~589m) was discovered at 1040 UT on 1 May by the Mt. Lemmon Survey (MLS), which observed it at May 1.44-48p7 and 2.40-42p3. The discovery was confirmed by the Catalina Sky Survey (CSS) (April 30.40-41p3) and Wildberg Obs. (May 1.91-92p4).
MPEC 2008-J15 - "16:49 UT" - 2008 JG
- K08J00G 2008 JG (H=21.0 ~214m) was discovered at 0925 UT on 1 May by CSS, which observed it at May 1.39-44p8. The discovery was confirmed by Wildberg Obs. (May 1.98p3), Great Shefford Obs. (May 1.99-00p3), Sabino Canyon Obs. (May 2.30-31p3), MLS (May 2.37-38p4), Kanab Obs. (May 2.42-46p2), and the Spacewatch 1.8m telescope (May 2.43-45p3).
MPEC 2008-J14 - "16:46 UT" - 2008 JE
- K08J00E 2008 JE (small asteroid, H=25.8 ~23m) was discovered at 0534 UT on 1 May by CSS, which observed it at May 1.23-25p4 and 1.32-33p3. The discovery was confirmed by Sabino Canyon Obs. (May 1.31p2), Schiaparelli Obs. (May 2.04-05p2), Spacewatch 1.8m (May 2.28-31p3), and MLS (May 2.30-31p4).
MPEC 2008-J13 - "16:43 UT" - 2008 HC38
- K08H38C 2008 HC38 (small asteroid, Earth MOID=0.2 LD, H=26.1 ~20m) was discovered at 0709 UT on 30 April by LINEAR, which observed it at April 30.30-34p5. The discovery was confirmed by MLS (May 1.31p4), Schiaparelli Obs. (May 1.97-98p2), Great Shefford Obs. (May 1.98-02p2), and Sabino Canyon Obs. (May 2.25-26p3). This object was within ten lunar distances (LD) of Earth, reaching 2.2 LD on 28 April.
MPEC 2008-J12 - "16:34 UT" - 2008 HB38
- K08H38B 2008 HB38 (risk-listed, Earth MOID=1.4 LD, H=21.2 ~195m) was discovered at 0705 UT on 30 April by MLS, which observed it at April 30.30-32p4, May 1.24p4, and 2.34-36p4. The discovery was confirmed by Spacewatch 1.8m (May 2.38-39p3).
MPEC 2008-J11 - "16:30 UT" - 2008 HA38
- K08H38A 2008 HA38 (H=20.5 ~269m) was discovered at 0704 UT on 30 April by MLS, which observed it at April 30.29-32p4, 30.41p3, May 1.24p1, 1.28-30p8, and 2.34-36p4. The discovery was confirmed by Spacewatch 1.8m (May 2.36-37p3).
MPEC 2008-J10 - "16:21 UT" - 2008 HY37
- K08H37Y 2008 HY37 (H=18.3 ~741m) was discovered at 0353 UT on 29 April by the Spacewatch 0.9m telescope, which observed it at April 29.16-18p3. The discovery was confirmed by Spacewatch 1.8m (April 29.22p3, 30.23p3 & May 2.23-25p3 at V=21.8-22.3) and MLS (April 30.22-24p4).
MPEC 2008-J09 - "13:25 UT" - 2006 KM103
- K06KA3M 2006 KM103 (Earth MOID=4.8 LD, H=20.2 ~309m) from Spacewatch 1.8m (April 29.37-38p3 & May 2.47-49p3 at V=22.2)
MPEC 2008-J08 - "13:20 UT" - 2004 RA11
- K04R11A 2004 RA11 (i=39.3°, H=18.9 ~562m) from David Tholen's team on Mauna Kea (April 22.49p2 at R=22.6 & 27.56-57p3 at R=22.7-8)
- Observations of recently (no longer) risk-listed objects
- K08G00F 2008 GF (arc=29 days, H=20.7 ~245m) from Astronomical Research Obs. (ARO) (April 21.15-18p3)
- Observations of small asteroids (H>22.0)
- K08H03Q 2008 HQ3 (arc=3 days, H=27.5 ~11m) from Great Shefford Obs. (April 29.95p1 & May 1.94-96p3)
- K08H03J 2008 HJ3 (arc=2 days, H=23.1 ~81m) from ARO (April 30.20-21p3)
- K08H02D 2008 HD2 (arc=3 days, H=25.1 ~32m) from ARO (April 30.22p1)
- K08GB0E 2008 GE110 (arc=10 days, H=22.1 ~129m) from ARO (April 21.24-26p3)
- K08GB0C 2008 GC110 (arc=14 days, H=22.2 ~123m) from ARO (April 21.28-29p3)
- K08G20W 2008 GW20 (arc=17 days, H=22.1 ~129m) from ARO (April 21.30-31p5)
- Observations of other objects
- K08H02F 2008 HF2 (arc=3 days, H=19.6 ~407m) from ARO (April 30.32-33p4)
- K08H01W 2008 HW1 (q=0.102 AU, Q=5.066 AU, arc=32 days, H=17.5 ~1.07 km) from Chante-Perdrix Obs. (April 30.88-89p3) and Wildberg Obs. (May 1.89-90p4)
- K08G03V 2008 GV3 (i=72.9°, arc=24 days, H=18.5 ~676m) from Madonna di Dossobuono Obs. (May 1.87p3)
- K08E69C 2008 EC69 (Q=4.458 AU, arc=73 days, H=17.1 ~1.29 km) from Iluro Obs. (May 1.12p3)
- K08E32B 2008 EB32 (arc=51 days, H=19.2 ~490m) from ARO (April 30.09-10p3)
- K07V04Q 2007 VQ4 (arc=3 opp, H=15.9 ~2.24 km, q=1.271 AU) from Madonna di Dossobuono Obs. (May 1.88p3) and El Guijo Obs. (May 1.99-01p2)
- K01H07Y 2001 HY7 (arc=4 opp, H=20.5 ~269m) from Madonna di Dossobuono Obs. (May 1.89p3)
- K00E70R 2000 ER70 (i=36.9°, arc=4 opp, H=16.9 ~1.41 km) from ARO (April 21.32-33p3)
- J99F00A 1999 FA (arc=2 opp, H=20.7 ~245m) from ARO (April 21.34-35p3)
- F2679 152679 1998 KU2 from Spacewatch 0.9m (May 1.16-17p2)
- 53319 53319 1999 JM8 from Iluro Obs. (May 1.13-14p3)
- 35107 35107 1991 VH from Iluro Obs. (May 1.07p3)
- 04954 4954 Eric (1990 SQ) from Mt. Tuffley Obs. (May 1.93p3)
- 03288 3288 Seleucus (1982 DV) from Mt. Tuffley Obs. (May 1.96-97p3)
- 01866 1866 Sisyphus (1972 XA) from El Guijo Obs. (May 1.03-05p2)
Observers on 2 May '08
Seventeen observing facilities appear in today's MPECs.
|Code||Observer / observatory|
|H55||Astronomical 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|
|703||Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2008-J14, 2008-J15 & 2008-J16 -- 2008 JJ, 2008 JG, 2008 JE|
|A77||Chante-Perdrix Obs. in France, 1 in MPEC 2008-J07 -- 2008 HW1|
|J27||El Guijo Obs. in Spain, 2 in MPEC 2008-J07 -- 2007 VQ4, 1866|
|J95||Great Shefford Obs. in England, 3 in MPECs 2008-J07, 2008-J13 & 2008-J15 -- 2008 JG, 2008 HQ3, 2008 HC38|
|B19||Iluro Obs. in Spain, 3 in MPEC 2008-J07 -- 2008 EC69, 53319, 35107|
|682||Kanab Obs. in Utah, 1 in MPEC 2008-J15 -- 2008 JG|
|704||LINEAR in New Mexico, 1 in MPEC 2008-J13 -- 2008 HC38|
|560||Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2008-J07 -- 2008 GV3, 2007 VQ4, 2001 HY7|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-J08 -- 2004 RA11|
|G96||Mt. 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|
|J93||Mt. Tuffley Obs. in England, 2 in MPEC 2008-J07 -- 4954, 3288|
|854||Sabino Canyon Obs. in Arizona, 3 in MPECs 2008-J13, 2008-J14 & 2008-J15 -- 2008 JG, 2008 JE, 2008 HC38|
|204||Schiaparelli Obs. in Italy, 2 in MPECs 2008-J13 & 2008-J14 -- 2008 JE, 2008 HC38|
|691||Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2008-J07 & 2008-J10 -- 2008 HY37, 152679|
|291||Spacewatch 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|
|198||Wildberg 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
Notes for Today's Latest Risk Assessments
|2008 HB38||JPL Sentry||2059||2010-2107||138||2.4e-06||-3.51||-3.70||0||JPL: "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 HU4||NEODyS||1243||2073-2086||4||4.35e-07||-8.25||-8.36||0||NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/05/01.401."|
|2008 HO3||NEODyS||1243||2017-2082||27||9.54e-10||-4.82||-5.52||0||NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/04/29.339 to 2008/05/01.280."|
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.
|2059||Noted that JPL Sentry has posted 2008 HB38 as an impact risk - see above|
|1742||Grabbed 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
|1401||Grabbed MPEC 2008-J08 - 2004 RA11 - see above|
Grabbed MPEC 2008-J09 - 2006 KM103 - see above
|1242||Noted 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