Contents on 12 May '08
- IAU Minor Planet Center
- NEOCP Activity -- four listings: 2 new, 2 updated
- New MPECs -- seven MPECs
- Observers -- 28 observing facilities
- Impact Risk Monitoring -- ten objects
- Chronology
Resources:
- 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
The latest A/CC news is available via framed access, 
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 12 May '08
The MPC's NEO Confirmation Page has 4 listings: 2 new, 2 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and two updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of twelve 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 12 May '08
Minor Planet Electronic Circulars
As of last check at 2354 UTC, there have been seven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-J60 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2008-J61 time-stamped "15:47 UT" - 2008 JL24 - see below
- MPEC 2008-J62 time-stamped "16:28 UT" - 2008 JO24 - see below
- MPEC 2008-J63 time-stamped "16:33 UT" - 2008 JP24 - see below
- MPEC 2008-J64 time-stamped "18:04 UT" - Comet C/2008 J3 (McNaught) - see below
- MPEC 2008-J65 time-stamped "19:10 UT" - 2008 AL33 - see below
- MPEC 2008-J66 time-stamped "21:35 UT" - 2007 OC10
MPEC 2008-J66 - "21:35 UT" - 2007 OC10
- K07O10C 2007 OC10 (q=34.916 AU, Q=67.288 AU, H=5.7 ~245 km) from Mt. Palomar (May 10.41p1, 11.41p1 & 12.40p1)
MPEC 2008-J65 - "19:10 UT" - 2008 AL33
- K08A33L 2008 AL33 (small asteroid, H=22.7 ~98m) from Marc W. Buie via Kitt Peak Natl. Obs. (KPNO) (2004 Feb. 26.41p1 & 2004 Feb. 26.48p1) and the Spacewatch 1.8m telescope (2004 March 23.27-32p3)
MPEC 2008-J64 - "18:04 UT" - Comet C/2008 J3 (McNaught)
- CK08J030 C/2008 J3 (i=25.4°, q=3.532 AU, TP=2008 Apr. 3.968 TT) from the Siding Spring Survey (SSS) (May 10.69-75p5, 10.82p1, 11.66p1, 11.82p1 & 12.64p1), Mt. John Obs. (May 11.48-49p3, 11.62-63p4, 12.51-53p4 & 12.71-72p3), and Tiki Obs. (May 12.55-58p3)
MPEC 2008-J63 - "16:33 UT" - 2008 JP24
- K08J24P 2008 JP24 (small asteroid, Earth MOID=0.6 LD, H=26.6 ~16m) was discovered at 1418 UT on 10 May by SSS, which observed it at May 10.60-64p4, 10.69p1, 10.74p1, 11.54-55p2, and 12.58p1. The discovery was confirmed by Mt. John Obs. (May 10.65-66p6, 11.39p3, 11.46-47p3, 11.58-59p3, 12.38-39p5 & 12.48-49p5), Drebach Obs. (May 10.95p5), CEAMIG-REA (May 11.11p3), Grasslands Obs. (May 11.22p3), Astronomical Research Obs. (ARO) (May 12.21p2), and Tiki Obs. (May 12.24-26p3). This object is now within ten lunar distances (LD) of Earth, reaching 2.9 LD on 7 May.
MPEC 2008-J62 - "16:28 UT" - 2008 JO24
- K08J24O 2008 JO24 (Q=4.416 AU, H=17.8 ~933m) was discovered at 1042 UT on 10 May by the Mt. Lemmon Survey (MLS), which observed it at May 10.45-46p4, 11.43p4, and 12.46-48p3. The discovery was confirmed by Guidestar Obs. (May 11.02-06p3).
MPEC 2008-J61 - "15:47 UT" - 2008 JL24
- K08J24L 2008 JL24 (risk-listed, Earth MOID=0.2 LD, H=29.5 ~4m) was discovered at 0605 UT on 11 May by LINEAR, which observed it at May 11.25-30p5. The discovery was confirmed by Great Shefford Obs. (May 12.02-03p7), Alter Satzberg Obs. (May 12.06-08p5), Sabino Canyon Obs. (May 12.21-22p4), Tiki Obs. (May 12.29-32p3), and Mt. John Obs. (May 12.35-37p12 & 12.47p3). This object is now within ten lunar distances (LD) of Earth, reaching 0.5 LD on 10 May (INTRUDER).
<< DOU on 12 May '08 >> MPEC 2008-J60 - "06:07 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08H38B 2008 HB38 (arc=12 days, H=21.1 ~204m) from Spacewatch 1.8m (May 11.23-24p3 & 12.15-16p3)
- K08H04U 2008 HU4 (small asteroid, arc=11 days, H=28.3 ~7m) from Spacewatch 1.8m (May 11.31-32p3)
- K08H03O 2008 HO3 (Q=4.790 AU, arc=12 days, H=18.0 ~851m) from Spacewatch 1.8m (May 11.24-25p3)
- K08H03E 2008 HE3 (Q=4.443 AU, arc=13 days, H=19.1 ~513m) from Spacewatch 1.8m (May 11.21-22p3)
- Observations of recently (no longer) risk-listed objects
- K08GB0A 2008 GA110 (small asteroid, Q=4.497 AU, arc=27 days, H=22.1 ~129m) from Spacewatch 1.8m (May 11.25-26p3)
- K08G20O 2008 GO20 (small asteroid, arc=33 days, H=22.3 ~117m) from Madonna di Dossobuono Obs. (May 11.88-89p3)
- Observations of small asteroids (H>22.0)
- K08J02U 2008 JU2 (arc=9 days, H=22.7 ~98m) from Stia Obs. (May 10.85-87p4) and Drebach Obs. (May 11.96-97p5)
- K08E07Q 2008 EQ7 (arc=65 days, H=22.6 ~102m) from ARO (May 10.32-33p3)
- J98K03G 1998 KG3 (arc=3 opp, H=22.2 ~123m) from ARO (May 10.22-26p3)
- Observations of other objects
- K08J20O 2008 JO20 (arc=4 days, H=17.3 ~1.17 km) from MLS (May 8.14-19p6 discovery), Grasslands Obs. (May 8.22p3), Schiaparelli Obs. (May 8.84-85p2), Magdalena Ridge Obs. (MRO) (May 11.17-18p3), and Alter Satzberg Obs. (May 11.83-86p3)
- K08J20N 2008 JN20 (arc=2 days, H=18.5 ~676m) from Bisei Spaceguard Center (May 11.58-59p4) and Cormons Obs. (May 11.95p1)
- K08J20M 2008 JM20 (arc=1 day, H=21.0 ~214m) from Bisei (May 11.57p4)
- K08J19W 2008 JW19 (arc=4 days, H=20.8 ~234m) from ARO (May 10.28-29p4), Mt. John Obs. (May 11.43p3), and Alter Satzberg Obs. (May 11.99-04p3)
- K08J19T 2008 JT19 (arc=4 days, H=20.1 ~323m) from Spacewatch 1.8m (May 11.27p3)
- K08J19S 2008 JS19 (arc=4 days, H=18.9 ~562m) from ARO (May 10.15-16p5), Tiki Obs. (May 11.31-35p2), and Madonna di Dossobuono Obs. (May 11.85p3)
- K08J14Q 2008 JQ14 (arc=7 days, H=19.2 ~490m) from ARO (May 10.12p3) and Alter Satzberg Obs. (May 11.89-91p3)
- K08J07Z 2008 JZ7 (Q=4.411 AU, arc=5 days, H=18.5 ~676m) from ARO (May 10.13-14p5)
- K08J00O 2008 JO (arc=8 days, H=18.4 ~708m) from ARO (May 10.09-10p4)
- K08J00N 2008 JN (q=0.211 AU, arc=11 days, H=20.7 ~245m) from Madonna di Dossobuono Obs. (May 11.86-87p3)
- K08J00G 2008 JG (arc=9 days, H=20.9 ~224m) from ARO (May 10.27-28p3)
- K08H04V 2008 HV4 (arc=11 days, H=19.4 ~446m) from the Catalina Sky Survey (CSS) (May 11.36-38p4)
- K08H03S 2008 HS3 (arc=12 days, H=21.7 ~155m) from Madonna di Dossobuono Obs. (May 11.84p3)
- K08H02F 2008 HF2 (arc=14 days, H=19.5 ~426m) from LINEAR (May 11.32-35p4)
- K08H01W 2008 HW1 (q=0.102 AU, Q=5.064 AU, arc=42 days, H=17.5 ~1.07 km) from Remanzacco Obs. (May 11.95p2) and Cormons Obs. (May 11.96p6)
- K08G03V 2008 GV3 (i=72.9°, arc=33 days, H=18.5 ~676m) from ARO (May 10.17-18p4)
- K08F06W 2008 FW6 (arc=42 days, H=21.0 ~214m) from Spacewatch 1.8m (May 11.16-17p3)
- K08F06N 2008 FN6 (arc=43 days, H=21.3 ~186m) from Altschwendt Obs. (May 11.87-88p3)
- K08F00N 2008 FN (i=44.7°, arc=2 opp, H=18.5 ~676m) from MLS (May 11.28-30p3)
- K08E32B 2008 EB32 (arc=61 days, H=19.3 ~467m) from ARO (May 10.10-11p3)
- K08E06O 2008 EO6 (arc=66 days, H=19.6 ~407m) from ARO (May 10.19-20p3)
- K08D00E 2008 DE (arc=89 days, H=19.7 ~389m) from LINEAR (May 11.42-45p4)
- K08C22B 2008 CB22 (arc=93 days, H=19.7 ~389m) from Spacewatch 1.8m (May 11.18-20p3)
- K07VI3R 2007 VR183 (Q=4.353 AU, arc=240 days, H=17.5 ~1.07 km) from MLS (May 11.17-20p4) and CSS (May 11.23-25p4)
- K07V04Q 2007 VQ4 (arc=3 opp, H=16.0 ~2.14 km, q=1.271 AU) from Drebach Obs. (May 11.85-86p3)
- K06G02Q 2006 GQ2 (arc=2 opp, H=18.1 ~812m) from Mt. John Obs. (May 11.66-68p3)
- K05X01E 2005 XE1 (arc=2 opp, H=18.9 ~562m) from Wildberg Obs. (May 3.98-99p3)
- K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from Drebach Obs. (May 11.97p5)
- K04X44N 2004 XN44 (arc=2 opp, H=18.4 ~708m) from CSS (May 11.43-44p2)
- K04G01A 2004 GA1 (Q=4.068 AU, arc=4 opp, H=17.5 ~1.07 km) from Mt. John Obs. (May 11.74-75p4)
- K04C39D 2004 CD39 (arc=2 opp, H=20.4 ~282m) from Mt. John Obs. (May 11.53-57p5)
- K03K02O 2003 KO2 (q=0.356 AU, arc=4 opp, H=20.1 ~323m) from Wildberg Obs. (May 8.07p4)
- K01XQ6W 2001 XW266 (arc=3 opp, H=19.3 ~467m) from ARO (May 10.38-39p3)
- J99F00A 1999 FA (arc=2 opp, H=20.7 ~245m) from Wildberg Obs. (May 11.07p1)
- G3693 163693 Atira (2003 CP20) from LINEAR (May 11.15-19p4)
- G2723 162723 2000 VM2 from SSS (May 11.77p1)
- D7170 137170 1999 HF1 from Bergen-Enkheim Obs. (May 10.95-10p10)
- 10145 10145 1994 CK1 from MLS (May 11.20-22p4)
- 05836 5836 1993 MF from MLS (May 11.23-26p4)
- 05626 5626 1991 FE from CSS (May 11.32-35p4)
- 01866 1866 Sisyphus (1972 XA) from Timberlake Obs. (May 11.18-22p4)
Observers on 12 May '08
A total of 28 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| B03 | Alter Satzberg Obs. in Austria, 4 in MPECs 2008-J60 & 2008-J61 -- 2008 JW19, 2008 JQ14, 2008 JO20, 2008 JL24 |
| A44 | Altschwendt Obs. in Austria, 1 in MPEC 2008-J60 -- 2008 FN6 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 13 in MPECs 2008-J60 & 2008-J63 -- 2008 JZ7, 2008 JW19, 2008 JS19, 2008 JQ14, 2008 JP24, 2008 JO, 2008 JG, 2008 GV3, 2008 EQ7, 2008 EO6, 2008 EB32, 2001 XW266, 1998 KG3 |
| A74 | Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-J60 -- 137170 |
| 300 | Bisei Spaceguard Center in Japan, 2 in MPEC 2008-J60 -- 2008 JN20, 2008 JM20 |
| I77 | CEAMIG-REA in Brazil, 1 in MPEC 2008-J63 -- 2008 JP24 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2008-J60 -- 2008 HV4, 2007 VR183, 2004 XN44, 5626 |
| A94 | Cormons Obs. in Italy, 2 in MPEC 2008-J60 -- 2008 JN20, 2008 HW1 |
| 113 | Drebach Obs. in Germany, 4 in MPECs 2008-J60 & 2008-J63 -- 2008 JU2, 2008 JP24, 2007 VQ4, 2005 NB7 |
| 651 | Grasslands Obs. in Arizona, 2 in MPECs 2008-J60 & 2008-J63 -- 2008 JP24, 2008 JO20 |
| J95 | Great Shefford Obs. in England, 1 in MPEC 2008-J61 -- 2008 JL24 |
| A17 | Guidestar Obs. in Germany, 1 in MPEC 2008-J62 -- 2008 JO24 |
| 6951 | Marc W. Buie via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2008-J65 -- 2008 AL33 |
| 704 | LINEAR in New Mexico, 4 in MPECs 2008-J60 & 2008-J61 -- 2008 JL24, 2008 HF2, 2008 DE, 163693 |
| 560 | Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2008-J60 -- 2008 JS19, 2008 JN, 2008 HS3, 2008 GO20 |
| H01 | Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-J60 -- 2008 JO20 |
| 474 | Mt. John Obs. in New Zealand, 7 in MPECs 2008-J60, 2008-J61, 2008-J63 & 2008-J64 -- 2008 JW19, 2008 JP24, 2008 JL24, C/2008 J3, 2006 GQ2, 2004 GA1, 2004 CD39 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2008-J60 & 2008-J62 -- 2008 JO24, 2008 JO20, 2008 FN, 2007 VR183, 10145, 5836 |
| 675 | Mt. Palomar in southern California, 1 in MPEC 2008-J66 -- 2007 OC10 |
| 473 | Remanzacco Obs. in Italy, 1 in MPEC 2008-J60 -- 2008 HW1 |
| 854 | Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-J61 -- 2008 JL24 |
| 204 | Schiaparelli Obs. in Italy, 1 in MPEC 2008-J60 -- 2008 JO20 |
| E12 | Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-J60, 2008-J63 & 2008-J64 -- 2008 JP24, C/2008 J3, 162723 |
| 291 | Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2008-J60 & 2008-J65 -- 2008 JT19, 2008 HU4, 2008 HO3, 2008 HE3, 2008 HB38, 2008 GA110, 2008 FW6, 2008 CB22, 2008 AL33 |
| A78 | Stia Obs. in Italy, 1 in MPEC 2008-J60 -- 2008 JU2 |
| F85 | Tiki Obs. in Tahiti, 4 in MPECs 2008-J60, 2008-J61, 2008-J63 & 2008-J64 -- 2008 JS19, 2008 JP24, 2008 JL24, C/2008 J3 |
| H83 | Timberlake Obs. in Virginia, 1 in MPEC 2008-J60 -- 1866 |
| 198 | Wildberg Obs. in Germany, 3 in MPEC 2008-J60 -- 2005 XE1, 2003 KO2, 1999 FA |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 12 May '08
| 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 JL24 | JPL Sentry | 1834 | 2091 | 1 | 3.1e-07 | -9.10 | -9.10 | 0 | JPL: "Analysis based on 39 observations spanning 1.2199 days (2008-May-11.25353 to 2008-May-12.47344)." Diameter approximately 0.004 km. from mean, weighted H=29.4. |
| 2008 JL3 | JPL Sentry | 2354 | 2024-2100 | 16 | 1.2e-04 | -3.77 | -3.78 | 0 | JPL: "Analysis based on 29 observations spanning 4.0954 days (2008-May-05.35106 to 2008-May-09.44647)." Diameter approximately 0.029 km. from mean, weighted H=25.3. |
| 2008 JQ | JPL Sentry | 2258 | R E M O V E D | JPL: Risk listing removed at 2220 UTC. | |||||
| 2008 JP | JPL Sentry | 2354 | R E M O V E D | JPL: Risk listing removed at 2344 UTC. | |||||
| 2008 HC38 | JPL Sentry | 2043 | 2029 | 1 | 4.8e-08 | -7.40 | -7.40 | 0 | JPL: "Analysis based on 32 observations spanning 8.0249 days (2008-Apr-30.29803 to 2008-May-08.32293)." Diameter approximately 0.020 km. from mean, weighted H=26.1. |
| 2008 HB38 | JPL Sentry | 2320 | R E M O V E D | JPL: Risk listing removed at 2301 UTC. | |||||
| 2008 HU4 | JPL Sentry | 1636 | 2040-2086 | 10 | 3.0e-04 | -5.57 | -5.88 | 0 | JPL: "Analysis based on 43 observations spanning 10.997 days (2008-Apr-30.32444 to 2008-May-11.3218)." Diameter approximately 0.007 km. from mean, weighted H=28.3. |
| NEODyS | 1502 | 2040-2089 | 18 | 3.91e-04 | -5.45 | -5.72 | 0 | NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/05/11.323." | |
| 2008 HR3 | JPL Sentry | 2043 | R E M O V E D | JPL: Risk listing removed at 2039 UTC. | |||||
| 2008 HJ | JPL Sentry | 1748 | 2077-2106 | 18 | 2.2e-04 | -4.39 | -4.85 | 0 | JPL: "Analysis based on 78 observations spanning 6.1293 days (2008-Apr-24.24725 to 2008-Apr-30.376536)." Diameter approximately 0.024 km. from mean, weighted H=25.7. |
| 2006 SF281 | JPL Sentry | 2043 | 2009-2105 | 348 | 2.2e-06 | -5.44 | -6.60 | 0 | JPL: "Analysis based on 16 observations spanning .02717 days (2006-Sep-30.48927 to 2006-Sep-30.51644)." Diameter approximately 0.020 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 12 May '08
Times are UTC for when items were noted or added by The Tracking News.
| 2354 | Noted that JPL Sentry has posted 2008 JL3 as an impact risk - see above Noted that JPL Sentry has removed 2008 JP as an impact risk - see above |
| 2320 | Noted that JPL Sentry has removed 2008 HB38 as an impact risk - see above |
| 2258 | Noted that JPL Sentry has removed 2008 JQ as an impact risk - see above |
| 2201 | Grabbed MPEC 2008-J66 - 2007 OC10 - see above |
| 2043 | Noted that JPL Sentry has updated its 2006 SF281 risk assessment - see above Noted that JPL Sentry has updated its 2008 HC38 risk assessment - see above Noted that JPL Sentry has removed 2008 HR3 as an impact risk - see above Grabbed MPEC 2008-J65 - 2008 AL33 - see above |
| 1903 | Grabbed MPEC 2008-J64 - Comet C/2008 J3 (McNaught) - see above |
| 1834 | Noted that JPL Sentry has posted 2008 JL24 as an impact risk - see above |
| 1748 | Noted that JPL Sentry has updated its 2008 HJ risk assessment - see above |
| 1636 | Noted that JPL Sentry has updated its 2008 HU4 risk assessment - see above Grabbed MPEC 2008-J62 - 2008 JO24 - see above Grabbed MPEC 2008-J63 - 2008 JP24 - see above |
| 1600 | Grabbed MPEC 2008-J61 - 2008 JL24 - see above |
| 1502 | Noted that NEODyS has updated its 2008 HU4 risk assessment - see above |
| 1501 | Grabbed MPEC 2008-J60 - Daily Orbit Update - see above |
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