Contents on 30 March '08
- IAU Minor Planet Center
- NEOCP Activity -- eleven listings: 2 new, 9 updated
- New MPECs -- three MPECs
- Observers -- fifteen observing facilities
- Impact Risk Monitoring -- six 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 30 March '08
The MPC's NEO Confirmation Page has 11 listings: 2 new, 9 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and nine updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of seventeen 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 30 March '08
Minor Planet Electronic Circulars
As of last check at 2354 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-F55 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2008-F56 time-stamped "21:03 UT" - 2008 FW5 - see below
- MPEC 2008-F57 time-stamped "21:56 UT" - 2008 ES
MPEC 2008-F57 - "21:56 UT" - 2008 ES
- K08E00S 2008 ES (Q=4.037 AU, H=18.2 ~776m) from NEAT's USAF Haleakala telescope (2001 March 16.60-61p2, 2001 March 18.41-43p3 & 2001 March 26.39-41p3)
MPEC 2008-F56 - "21:03 UT" - 2008 FW5
- K08F05W 2008 FW5 (risk-listed, Earth MOID=4.4 LD, H=21.9 ~141m) was discovered at 1146 UT on 28 March by the Mt. Lemmon Survey (MLS), which observed it at March 28.47-50p7. The discovery was confirmed by Great Shefford Obs. (March 29.13-14p2) and the Spacewatch 1.8m telescope (March 29.40-41p3 & 30.36p2).
<< DOU on 30 Mar. '08 >> MPEC 2008-F55 - "06:07 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08F05F 2008 FF5 (small asteroid, q=0.081 AU, Q=4.362 AU, arc=1 day, H=23.0 ~85m) from MLS (March 29.33-34p4)
- K08F00N 2008 FN (i=54.0°, Q=4.288 AU, arc=2 days, H=18.0 ~851m) from Junk Bond Obs. (March 28.42-45p2 & 28.49p1)
- K08F00K 2008 FK (small asteroid, arc=2 days, H=27.3 ~12m) from Spacewatch 1.8m (March 29.31p3)
- K08E09A 2008 EA9 (small asteroid, arc=23 days, H=27.7 ~10m) from Spacewatch 1.8m (March 29.25-26p2)
- K08E07R 2008 ER7 (arc=24 days, H=20.0 ~339m) from Spacewatch 1.8m (March 30.18p3)
- Observations of recently (no longer) risk-listed objects
- K08E69D 2008 ED69 (i=36.3°, Q=5.054 AU, arc=18 days, H=16.8 ~1.48 km) from Desert Moon Obs. (March 29.44-46p3)
- K08E69C 2008 EC69 (Q=4.455 AU, arc=40 days, H=17.0 ~1.35 km) from Spacewatch 1.8m (March 29.35-36p3)
- K08E07M 2008 EM7 (arc=24 days, H=21.2 ~195m) from Spacewatch 1.8m (March 30.14-15p3 at V=21.7-22.2)
- K08E06L 2008 EL6 (arc=7 days, H=21.1 ~204m) from EURONEAR via La Silla (March 12.05-06p17)
- K08E00S 2008 ES (Q=4.032 AU, arc=27 days, H=18.2 ~776m) from Desert Moon Obs. (March 29.23-25p4)
- Observations of small asteroids (H>22.0)
- K08F05H 2008 FH5 (arc=1 day, H=27.0 ~13m) from MLS (March 29.33-35p4)
- K08F05E 2008 FE5 (arc=1 day, H=22.1 ~129m) from MLS (March 29.28-30p4)
- K08F00P 2008 FP (q=0.280 AU, Q=4.994 AU, arc=1 day, H=26.3 ~19m) from the Catalina Sky Survey (CSS) (March 29.29-41p18 & 29.46-48p4)
- K08F00O 2008 FO (arc=3 days, H=23.2 ~78m) from Junk Bond Obs. (March 28.23-27p7) and Verona Obs. (March 29.98p3)
- K08F00C 2008 FC (arc=6 days, H=24.8 ~37m) from Desert Moon Obs. (March 29.37-41p3)
- K08E85E 2008 EE85 (arc=16 days, H=22.8 ~93m) from LINEAR (March 29.24-29p5)
- K08CB6P 2008 CP116 (arc=105 days, H=22.9 ~89m) from MLS (March 29.31-33p4)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K08F05G 2008 FG5 (arc=1 day, H=21.8 ~148m) from Greiner Research Obs. (GRO) (March 29.29p5) and LINEAR (March 29.37-41p5)
- K08E68Y 2008 EY68 (q=0.176 AU, arc=15 days, H=22.0 ~135m) from Astronomical Research Obs. (ARO) (March 12.29-30p4)
- K08CB9J 2008 CJ119 (arc=88 days, H=21.8 ~148m) from MLS (March 29.21-24p4)
- Observations of other objects
- K08F00G 2008 FG (i=41.4°, arc=3 days, H=19.6 ~407m) from Spacewatch 1.8m (March 30.16-17p3)
- K08E32B 2008 EB32 (arc=19 days, H=19.2 ~490m) from Desert Moon Obs. (March 29.11-15p3)
- K08E09M 2008 EM9 (q=0.291 AU, arc=20 days, H=17.5 ~1.07 km) from CSS (March 29.35-36p3)
- K08E09B 2008 EB9 (arc=22 days, H=20.4 ~282m) from Spacewatch 1.8m (March 30.11-12p3)
- K08D00E 2008 DE (arc=46 days, H=19.4 ~446m) from LINEAR (March 29.31-36p5)
- K08CB8Z 2008 CZ118 (arc=46 days, H=18.4 ~708m) from Desert Moon Obs. (March 29.27-28p3)
- K08C72L 2008 CL72 (arc=55 days, H=19.9 ~355m) from Desert Moon Obs. (March 29.17-21p3)
- K07R19X 2007 RX19 (i=40.4°, arc=194 days, H=18.5 ~676m) from Peschiera del Garda Obs. (March 13.87-89p3 & 25.83-84p2)
- K07R07N 2007 RN7 (arc=139 days, H=21.6 ~162m) from David Tholen's team on Mauna Kea (Jan. 8.28-29p2 at R=22.0-22.1 & 9.28p2 at R=22.5)
- K07N04S 2007 NS4 (arc=2 opp, H=19.1 ~513m) from MLS (March 29.28-30p4)
- K05YI0P 2005 YP180 (arc=2 opp, H=19.3 ~467m) from Spacewatch 1.8m (March 29.32-33p3)
- K05M13P 2005 MP13 (arc=2 opp, H=19.8 ~371m) from Spacewatch 1.8m (March 29.33-34p3)
- K05JA8U 2005 JU108 (arc=3 opp, H=19.7 ~389m) from MLS (March 29.36-37p4)
- K05B02E 2005 BE2 (arc=2 opp, H=18.2 ~776m) from Peschiera del Garda Obs. (March 13.93-96p4)
- K04F32N 2004 FN32 (arc=4 opp, H=19.0 ~537m) from Desert Moon Obs. (March 29.31-34p3)
- K03H42U 2003 HU42 (arc=4 opp, H=18.0 ~851m) from Spacewatch 1.8m (March 29.38-39p3)
- K02J00C 2002 JC (i=40.9°, arc=6 opp, H=17.1 ~1.29 km) from LINEAR (March 29.43-46p4)
- K02F05W 2002 FW5 (i=46.4°, arc=3 opp, H=19.3 ~467m) from GRO (March 29.27-28p9)
- K02AC9J 2002 AJ129 (q=0.117 AU, arc=3 opp, H=18.5 ~676m) from GRO (March 29.31p3), Spacewatch 1.8m (March 29.36-37p3), and Desert Moon Obs. (March 29.48-49p4)
- K00DA7P 2000 DP107 (arc=6 opp, H=18.2 ~776m) from LINEAR (March 29.24-29p5)
- E4411 144411 2004 EW9 from the Spacewatch 0.9m telescope (Jan. 3.13-16p3)
- D8205 138205 2000 EZ148 from LINEAR (March 29.30-35p5)
- 53435 53435 1999 VM40 from Spacewatch 0.9m (March 29.37-40p3)
- 41429 41429 2000 GE2 from MLS (March 29.25-27p4)
- 24445 24445 2000 PM8 from Spacewatch 0.9m (March 29.37-40p3)
- 13553 13553 1992 JE from MLS (March 29.31-33p4)
- 09162 9162 1987 OA from LINEAR (March 29.31-36p5)
- 05646 5646 1990 TR from LINEAR (March 29.31-36p5)
- 05626 5626 1991 FE from MLS (March 29.45-46p4)
- 04503 4503 Cleobulus (1989 WM) from LINEAR (March 29.42-47p5)
- 03908 3908 Nyx (1980 PA) from MLS (March 29.25-27p4)
- 03757 3757 1982 XB from Spacewatch 0.9m (March 29.32-35p3)
- 03552 3552 Don Quixote (1983 SA) from LINEAR (March 29.30-35p5)
Observers on 30 March '08
Fifteen observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H55 | Astronomical Research Obs. in Illinois, 1 in MPEC 2008-F55 -- 2008 EY68 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-F55 -- 2008 FP, 2008 EM9 |
| 448 | Desert Moon Obs. in New Mexico, 8 in MPEC 2008-F55 -- 2008 FC, 2008 ES, 2008 ED69, 2008 EB32, 2008 CZ118, 2008 CL72, 2004 FN32, 2002 AJ129 |
| J95 | Great Shefford Obs. in England, 1 in MPEC 2008-F56 -- 2008 FW5 |
| H51 | Greiner Research Obs. (GRO) in Wisconsin, 3 in MPEC 2008-F55 -- 2008 FG5, 2002 FW5, 2002 AJ129 |
| 701 | Junk Bond Obs. in Arizona, 2 in MPEC 2008-F55 -- 2008 FO, 2008 FN |
| 704 | LINEAR in New Mexico, 10 in MPEC 2008-F55 -- 2008 FG5, 2008 EE85, 2008 DE, 2002 JC, 2000 DP107, 138205, 9162, 5646, 4503, 3552 |
| 809| | EURONEAR via La Silla in Chile, 1 in MPEC 2008-F55 -- 2008 EL6 |
| 5682 | David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-F55 -- 2007 RN7 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2008-F55 & 2008-F56 -- 2008 FW5, 2008 FH5, 2008 FF5, 2008 FE5, 2008 CP116, 2008 CJ119, 2007 NS4, 2005 JU108, 41429, 13553, 5626, 3908 |
| 608 | NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2008-F57 -- 2008 ES |
| A53 | Peschiera del Garda Obs. in Italy, 2 in MPEC 2008-F55 -- 2007 RX19, 2005 BE2 |
| 691 | Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2008-F55 -- 53435, 24445, 144411, 3757 |
| 291 | Spacewatch 1.8m telescope in Arizona, 12 in MPECs 2008-F55 & 2008-F56 -- 2008 FW5, 2008 FK, 2008 FG, 2008 ER7, 2008 EM7, 2008 EC69, 2008 EB9, 2008 EA9, 2005 YP180, 2005 MP13, 2003 HU42, 2002 AJ129 |
| A48 | Verona Obs. in Italy, 1 in MPEC 2008-F55 -- 2008 FO |
Impact Risk Monitoring on 30 March '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 FW5 | JPL Sentry | 2355 | 2096-2108 | 3 | 2.0e-08 | -6.46 | -6.75 | 0 | JPL: "Analysis based on 14 observations spanning 1.8970 days (2008-Mar-28.46774 to 2008-Mar-30.36478)." Diameter approximately 0.150 km. from mean, weighted H=21.7. |
| 2008 FF5 | JPL Sentry | 1550 | 2029-2080 | 12 | 4.6e-07 | -4.81 | -5.25 | 0 | JPL: "Analysis based on 29 observations spanning 1.0225 days (2008-Mar-28.32219 to 2008-Mar-29.34473)." Diameter approximately 0.082 km. from mean, weighted H=23.1. |
| NEODyS | 1458 | 2029-2087 | 9 | 4.24e-07 | -4.82 | -5.26 | 0 | NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/03/29.345." | |
| 2008 FN | JPL Sentry | 1903 | 2020-2105 | 47 | 2.1e-08 | -3.77 | -4.52 | 0 | JPL: "Analysis based on 19 observations spanning 1.7126 days (2008-Mar-27.45915 to 2008-Mar-29.17179)." Diameter approximately 0.784 km. from mean, weighted H=18.2. |
| NEODyS | 1458 | 2010-2082 | 43 | 1.38e-08 | -3.81 | -4.60 | 0 | NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/03/27.460 to 2008/03/29.173." | |
| 2008 FK | JPL Sentry | 1651 | R E M O V E D | JPL: Risk listing removed at 1622 UTC. | |||||
| NEODyS | 1456 | R E M O V E D | |||||||
| 2008 EA9 | JPL Sentry | 1550 | 2061-2081 | 5 | 2.5e-05 | -6.34 | -6.65 | 0 | JPL: "Analysis based on 47 observations spanning 22.854 days (2008-Mar-06.40551 to 2008-Mar-29.25974)." Diameter approximately 0.010 km. from mean, weighted H=27.7. |
| NEODyS | 1458 | 2061-2090 | 25 | 3.75e-05 | -6.13 | -6.64 | 0 | NEODyS: "Based on 48 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/29.260." | |
| 2008 ER7 | JPL Sentry | 1903 | 2077-2104 | 8 | 1.4e-06 | -3.52 | -4.06 | 0 | JPL: "Analysis based on 65 observations spanning 23.847 days (2008-Mar-06.33608 to 2008-Mar-30.18305)." Diameter approximately 0.320 km. from mean, weighted H=20.1. |
| NEODyS | 1458 | 2077-2089 | 3 | 5.01e-07 | -3.89 | -4.14 | 0 | NEODyS: "Based on 65 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/30.184." | |
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 30 March '08
Times are UTC for when items were noted or added by The Tracking News.
| 2355 | Noted that JPL Sentry has posted 2008 FW5 as an impact risk - see above |
| 2235 | Grabbed MPEC 2008-F57 - 2008 ES - see above |
| 2132 | Grabbed MPEC 2008-F56 - 2008 FW5 - see above |
| 1903 | Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above Noted that JPL Sentry has posted 2008 FN as an impact risk - see above |
| 1651 | Noted that JPL Sentry has removed 2008 FK as an impact risk - see above |
| 1550 | Noted that JPL Sentry has updated its 2008 EA9 risk assessment - see above Noted that JPL Sentry has updated its 2008 FF5 risk assessment - see above |
| 1458 | Noted that NEODyS has updated its 2008 EA9 risk assessment - see above Noted that NEODyS has updated its 2008 ER7 risk assessment - see above Noted that NEODyS has updated its 2008 FF5 risk assessment - see above Noted that NEODyS has updated its 2008 FN risk assessment - see above |
| 1457 | Grabbed MPEC 2008-F55 - Daily Orbit Update - see above |
| 1456 | Noted that NEODyS has removed 2008 FK as an impact risk - see above |
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