Contents on 13 March '08
- IAU Minor Planet Center
- NEOCP Activity -- 25 listings: 22 new, 3 updated
- New MPECs -- one MPEC
- Observers -- thirteen 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 13 March '08
The MPC's NEO Confirmation Page has 25 listings: 22 new, 3 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had 22 new and three updated listings. All of these were "one nighters."
New MPECs on 13 March '08
Minor Planet Electronic Circulars
As of last check at 2354 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
<< DOU on 13 Mar. '08 >> MPEC 2008-E106 - "06:09 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08E68V 2008 EV68 (small asteroid, arc=1 day, H=23.6 ~65m) from Astronomical Research Obs. (ARO) (March 12.29-30p3)
- K08E08A 2008 EA8 (small asteroid, q=0.299 AU, arc=6 days, H=22.1 ~129m) from program code "|" via La Silla (March 11.15-17p14) and the Spacewatch 1.8m telescope (March 12.26-28p3)
- K08E07R 2008 ER7 (arc=6 days, H=19.8 ~371m) from La Silla/code "|" (March 11.28-30p12) and Spacewatch 1.8m (March 12.44-45p3)
- K08E07M 2008 EM7 (arc=6 days, H=21.5 ~170m) from Spacewatch 1.8m (March 12.25p3)
- K08E05V 2008 EV5 (arc=8 days, H=20.0 ~339m) from Spacewatch 1.8m (March 12.14-15p3)
- K08D04A 2008 DA4 (small asteroid, arc=13 days, H=23.9 ~56m) from ARO (March 1.33-34p3)
- Observations of recently (no longer) risk-listed objects
- K08E32G 2008 EG32 (small asteroid, arc=1 day, H=27.1 ~13m) from Spacewatch 1.8m (March 12.28-30p3) and the Catalina Sky Survey (CSS) (March 12.31-32p3)
- K08E07O 2008 EO7 (arc=5 days, H=19.9 ~355m) from the Spacewatch 0.9m telescope (March 10.28-31p3) and Spacewatch 1.8m (March 10.45p2)
- K08E05E 2008 EE5 (i=44.7°, arc=5 days, H=19.1 ~513m) from ARO (March 9.04-05p3)
- K08D22X 2008 DX22 (small asteroid, arc=9 days, H=24.5 ~43m) from ARO (March 9.18-20p3 at V=22.3)
- K08D05G 2008 DG5 (arc=10 days, H=19.7 ~389m) from ARO (March 1.23-24p3)
- K08D04G 2008 DG4 (small asteroid, Q=4.092 AU, arc=7 days, H=23.8 ~59m) from ARO (March 1.35-36p5)
- K08D00Y 2008 DY (Q=4.402 AU, arc=11 days, H=20.7 ~245m) from ARO (March 1.39p3)
- K08D00J 2008 DJ (arc=16 days, H=20.5 ~269m) from CSS (March 12.23-25p3)
- K08CB8R 2008 CR118 (arc=2 opp, H=18.7 ~616m) from LINEAR (March 12.22-26p3)
- K08C22B 2008 CB22 (arc=32 days, H=19.7 ~389m) from CSS (March 11.36-38p4)
- K08C06E 2008 CE6 (small asteroid, arc=31 days, H=23.6 ~65m) from Spacewatch 0.9m (March 9.29-32p3)
- Observations of small asteroids (H>22.0)
- K08E09E 2008 EE9 (arc=4 days, H=22.3 ~117m) from CSS (March 12.33-34p4)
- K08E00L 2008 EL (arc=29 days, H=22.3 ~117m) from Klet Obs. (March 8.93p2) and CSS (March 12.25-27p4)
- K08CH5B 2008 CB175 (arc=26 days, H=25.4 ~28m) from ARO (March 6.30p2 at V=21.7-21.8 & 11.26-28p3 at V=22.1-2)
- K08B02T 2008 BT2 (arc=51 days, H=24.3 ~47m) from ARO (March 9.10p1 at V=22.2)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K08E00F 2008 EF (arc=8 days, H=21.9 ~141m) from ARO (March 9.14-17p4 at V=22.2-4)
- K06F35V 2006 FV35 (arc=5 opp, H=21.8 ~148m) from Spacewatch 0.9m (March 10.39-42p3)
- Observations of other objects
- K08E09B 2008 EB9 (arc=3 days, H=20.3 ~295m) from Spacewatch 0.9m (March 11.11-13p3)
- K08E07T 2008 ET7 (arc=5 days, H=21.0 ~214m) from Spacewatch 0.9m (March 11.15-19p3)
- K08D23H 2008 DH23 (arc=10 days, H=19.7 ~389m) from Spacewatch 0.9m (March 10.40-43p3)
- K08D00W 2008 DW (arc=15 days, H=21.5 ~170m) from ARO (March 1.36-37p3) and LINEAR (March 12.29-32p3)
- K08CB8Z 2008 CZ118 (arc=28 days, H=18.4 ~708m) from CSS (March 11.33-35p4)
- K08C22A 2008 CA22 (arc=30 days, H=20.6 ~257m) from ARO (March 9.09-11p3)
- K08C01L 2008 CL1 (arc=38 days, H=19.5 ~426m) from Balzaretto Obs. (March 11.87-89p4)
- K08C00H 2008 CH (arc=39 days, H=20.3 ~295m) from CSS (March 11.26-27p4)
- K08A33N 2008 AN33 (Q=4.353 AU, arc=47 days, H=19.0 ~537m) from ARO (March 1.38p3)
- K07Y00K 2007 YK (arc=2 opp, H=17.6 ~1.02 km) from LINEAR (March 12.21-24p3)
- K07T24U 2007 TU24 (arc=152 days, H=20.3 ~295m) from CSS (March 11.21-23p3)
- K07T08G 2007 TG8 (Q=4.306 AU, arc=182 days, H=18.6 ~645m) from LINEAR (March 12.22-26p5) and Madonna di Dossobuono Obs. (March 12.92-93p3)
- K07R19X 2007 RX19 (i=40.4°, arc=180 days, H=18.4 ~708m) from Greiner Research Obs. (GRO) (March 12.11-13p9)
- K07Q03E 2007 QE3 (Q=4.044 AU, arc=2 opp, H=19.9 ~355m) from Spacewatch 0.9m (March 10.22-26p3)
- K07E00L 2007 EL (arc=2 opp, H=19.7 ~389m) from David Tholen's team on Mauna Kea (Jan. 9.24-25p2 at R=22.3-4)
- K05R34D 2005 RD34 (arc=2 opp, H=20.2 ~309m) from CSS (March 12.28-30p4)
- K05G59E 2005 GE59 (arc=3 opp, H=18.1 ~812m) from La Silla/code "|" (March 11.35-36p6)
- K05E00A 2005 EA (arc=2 opp, H=21.0 ~214m) from CSS (March 12.23-25p4)
- K05B02E 2005 BE2 (arc=2 opp, H=18.2 ~776m) from Madonna di Dossobuono Obs. (March 2.96p3)
- K04X44N 2004 XN44 (arc=2 opp, H=18.3 ~741m) from LINEAR (March 12.44-47p3)
- K03D14C 2003 DC14 (Q=4.510 AU, arc=3 opp, H=16.5 ~1.70 km) from ARO (March 1.40-41p3)
- K02T66D 2002 TD66 (arc=4 opp, H=20.3 ~295m) from CSS (March 12.26-28p4)
- K00DA7P 2000 DP107 (arc=4 opp, H=18.2 ~776m) from Madonna di Dossobuono Obs. (March 12.91p3)
- E3678 143678 2003 SA224 from LINEAR (March 12.10-15p4)
- D8205 138205 2000 EZ148 from LINEAR (March 12.27-32p5)
- D6618 136618 1994 CN2 from LINEAR (March 12.27-32p5)
- 85839 85839 1998 YO4 from LINEAR (March 12.44-49p5)
- 09856 9856 1991 EE from CSS (March 12.51-52p3)
- 09162 9162 1987 OA from LINEAR (March 12.32-37p9)
- 04954 4954 Eric (1990 SQ) from Puzol Obs. (March 12.80-81p5)
- 03552 3552 Don Quixote (1983 SA) from LINEAR (March 12.27-31p4)
- 02101 2101 Adonis (1936 CA) from Spacewatch 0.9m (March 10.28-30p2)
- 01620 1620 Geographos (1951 RA) from Airali Obs. (March 11.90p2)
Observers on 13 March '08
Thirteen observing facilities appear in today's MPEC.
| Code | Observer / observatory |
|---|---|
| 169 | Airali Obs. in Italy, 1 in MPEC 2008-E106 -- 1620 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 14 in MPEC 2008-E106 -- 2008 EV68, 2008 EF, 2008 EE5, 2008 DY, 2008 DX22, 2008 DW, 2008 DG5, 2008 DG4, 2008 DA4, 2008 CB175, 2008 CA22, 2008 BT2, 2008 AN33, 2003 DC14 |
| A81 | Balzaretto Obs. in Italy, 1 in MPEC 2008-E106 -- 2008 CL1 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 12 in MPEC 2008-E106 -- 2008 EL, 2008 EG32, 2008 EE9, 2008 DJ, 2008 CZ118, 2008 CH, 2008 CB22, 2007 TU24, 2005 RD34, 2005 EA, 2002 TD66, 9856 |
| H51 | Greiner Research Obs. in Wisconsin, 1 in MPEC 2008-E106 -- 2007 RX19 |
| 046 | Klet Obs. in the Czech Republic, 1 in MPEC 2008-E106 -- 2008 EL |
| 704 | LINEAR in New Mexico, 11 in MPEC 2008-E106 -- 2008 DW, 2008 CR118, 2007 YK, 2007 TG8, 2004 XN44, 85839, 143678, 138205, 136618, 9162, 3552 |
| 809| | program code "|" via La Silla in Chile, 3 in MPEC 2008-E106 -- 2008 ER7, 2008 EA8, 2005 GE59 |
| 560 | Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2008-E106 -- 2007 TG8, 2005 BE2, 2000 DP107 |
| 5682 | David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-E106 -- 2007 EL |
| J42 | Puzol Obs. in Spain, 1 in MPEC 2008-E106 -- 4954 |
| 691 | Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2008-E106 -- 2008 ET7, 2008 EO7, 2008 EB9, 2008 DH23, 2008 CE6, 2007 QE3, 2006 FV35, 2101 |
| 291 | Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2008-E106 -- 2008 EV5, 2008 ER7, 2008 EO7, 2008 EM7, 2008 EG32, 2008 EA8 |
Impact Risk Monitoring on 13 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 EC69 | NEODyS | 1429 | 2009-2089 | 75 | 2.61e-09 | -4.11 | -4.79 | 0 | NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/03/11.497 to 2008/03/12.507." |
| 2008 EV68 | JPL Sentry | 1428 | 2011-2106 | 147 | 1.3e-07 | -5.89 | -6.80 | 0 | JPL: "Analysis based on 14 observations spanning 1.0129 days (2008-Mar-11.28909 to 2008-Mar-12.302035)." Diameter approximately 0.068 km. from mean, weighted H=23.5. |
| NEODyS | 1428 | 2016-2090 | 61 | 3.99e-08 | -6.40 | -7.28 | 0 | NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2008/03/11.290 to 2008/03/12.303." | |
| 2008 EM68 | NEODyS | 1429 | 2011-2090 | 442 | 5.04e-06 | -6.00 | -6.47 | 0 | NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/03/08.252 to 2008/03/08.363." |
| 2008 EL68 | NEODyS | 1429 | 2019-2084 | 92 | 1.05e-05 | -6.69 | -7.22 | 0 | NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2008/03/06.408 to 2008/03/06.480." |
| 2008 EK68 | NEODyS | 1428 | 2030-2090 | 133 | 9.24e-06 | -8.08 | -8.98 | 0 | NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2008/03/05.441 to 2008/03/05.481." |
| 2008 EA8 | JPL Sentry | 1428 | R E M O V E D | JPL: Risk listing removed at 1050 UTC. | |||||
| NEODyS | 1428 | R E M O V E D | |||||||
| 2008 ER7 | NEODyS | 1429 | 2068-2090 | 26 | 1.43e-05 | -2.34 | -2.75 | 0 | NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/12.450." |
| JPL Sentry | 1428 | 2042-2108 | 130 | 1.9e-05 | -2.23 | -2.76 | 0 | JPL: "Analysis based on 39 observations spanning 6.1135 days (2008-Mar-06.33608 to 2008-Mar-12.44962)." Diameter approximately 0.350 km. from mean, weighted H=19.9. | |
| 2008 EM7 | JPL Sentry | 1428 | 2031-2055 | 2 | 1.8e-08 | -5.45 | -5.45 | 0 | JPL: "Analysis based on 43 observations spanning 5.9970 days (2008-Mar-06.25767 to 2008-Mar-12.25471)." Diameter approximately 0.180 km. from mean, weighted H=21.4. |
| NEODyS | 1428 | R E M O V E D | |||||||
| 2008 EV5 | JPL Sentry | 1428 | R E M O V E D | JPL: Risk listing removed at 1206 UTC. | |||||
| 2008 DA4 | JPL Sentry | 1428 | 2100 | 1 | 4.8e-07 | -6.11 | -6.11 | 0 | JPL: "Analysis based on 64 observations spanning 12.949 days (2008-Feb-27.28072 to 2008-Mar-11.22986)." Diameter approximately 0.054 km. from mean, weighted H=24.0. |
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 13 March '08
Times are UTC for when items were noted or added by The Tracking News.
| 1429 | Noted that NEODyS has updated its 2008 ER7 risk assessment - see above |
| 1428 | Noted that JPL Sentry has updated its 2008 DA4 risk assessment - see above Noted that JPL Sentry has removed 2008 EA8 as an impact risk - see above Noted that NEODyS has removed 2008 EA8 as an impact risk - see above Noted that NEODyS has posted 2008 EC69 as an impact risk - see above Noted that NEODyS has posted 2008 EK68 as an impact risk - see above Noted that NEODyS has posted 2008 EL68 as an impact risk - see above Noted that NEODyS has posted 2008 EM68 as an impact risk - see above Noted that JPL Sentry has updated its 2008 EM7 risk assessment - see above Noted that NEODyS has removed 2008 EM7 as an impact risk - see above Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above Noted that JPL Sentry has removed 2008 EV5 as an impact risk - see above Noted that JPL Sentry has updated its 2008 EV68 risk assessment - see above Noted that NEODyS has posted 2008 EV68 as an impact risk - see above Grabbed MPEC 2008-E106 - Daily Orbit Update - see above |
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