Contents on 30 March '13
- Traffic Report -- three objects
- IAU Minor Planet Center
- Observers -- nine observers
- Impact Risk Monitoring -- three objects
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 501 risk-listed objects, 266 have had news in the last 31 days. Updated at 1734 UTC on 30 March.
- Ephemerides for risk-rated & nearby objects + potential mission destinations
- News image catalog
- News old archive & Small Objects Archive
- Object Links - mainly for radar targets & close passers - updated 20 Feb.
- Observing Campaigns
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.
Traffic Report on 30 March '13
Three objects reported inside ten LD
There are three asteroids reported to be within ten lunar distances (LD) of our world today. Radar target 2013 FB8 comes its closest to Earth this time around, reaching 4.22 LD at 1553 UT, while risk-listed 2013 EL89 is outbound from 4.60 to 5.06 LD and 2013 FD8 departs from inside ten LD, moving from 9.84 to 11.06 LD.
Up next, risk-listed 2010 GM23 arrives inside ten LD on April 10th.
This report was generated at 1511 UTC with follow-up in today's DOU MPEC for 2013 FB8 plus observation of distant 68216 2001 CV26 and of 2012 QG42 from last September.
Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Object distances are interpreted by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.
NEOCP Activity on 30 March '13
The MPC's NEO Confirmation Page has 1 listing
When last checked at 2320 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one object listed. So far The Tracking News has counted a total of two listings on the NEOCP today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 30 March '13
Minor Planet Electronic Circulars
As of last check at 2320 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of risk-listed objects
- K13E28D 2013 ED28 (arc=22 days, H=21.4 ~178m) from Astronomical Research Obs. Westfield (March 29.06-09p3 at V=21.8-22.1)
- Observations of recently (no longer) risk-listed objects
- K13EA8V 2013 EV108 (arc=20 days, H=20.6 ~257m) from ARO Westfield (March 28.19-20p4 & 29.15-16p5)
- Observations of close-passing objects
- K13F08B 2013 FB8 (arc=11 days, H=25.0 ~34m, radar support) from ARO Westfield (March 28.29-30p5), McDonald Obs. (March 29.31-34p11), and South Obs. (March 29.90-91p6)
- K12Q42G 2012 QG42 from Rand II Obs. (2012 Sept. 12.04p5, 2012 Sept. 13.04-05p5 & 2012 Sept. 14.03-06p5)
- 68216 68216 2001 CV26 from ARO Westfield (March 28.20-22p6) and Elche Obs. (March 29.93p3)
- Observation campaigns (radar support, potential mission destinations)
- 68278 68278 2001 FC7 (PMD) from ARO Westfield (March 28.22-23p3)
-- Potential mission destinations list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K13F09M 2013 FM9 (arc=9 days, H=23.8 ~59m) from ARO Westfield (March 29.06-09p3)
- K13E04Q 2013 EQ4 (arc=26 days, H=23.2 ~78m) from ARO Westfield (March 29.13-14p3)
- K13E00A 2013 EA (arc=28 days, H=21.9 ~141m) from ARO Westfield (March 28.23-24p5) and Slooh.com Canary Islands Obs. (March 28.97-00p3)
- Observations of other asteroidal objects
- K13F13Y 2013 FY13 (arc=5 days, H=20.5 ~269m) from the Siding Spring Survey (SSS) (March 29.68-69p2)
- K13EA8W 2013 EW108 (arc=14 days, H=19.9 ~355m) from ARO Westfield (March 29.11-12p4)
- K13E27W 2013 EW27 (arc=23 days, H=18.0 ~851m) from ARO Westfield (March 29.04-06p3)
- K13E20M 2013 EM20 (arc=3 opp, H=19.8 ~371m) from the Spacewatch 0.9m telescope (1997 April 7.36-41p3 at V=21.4-22.2)
- K13CM2N 2013 CN222 (Q=5.328 AU, arc=43 days, H=18.6 ~645m) from ARO Westfield (March 29.16-18p3)
- K13CC9U 2013 CU129 (Q=4.958 AU, arc=44 days, H=17.3 ~1.17 km) from ARO Westfield (March 29.10-12p3)
- K13CC8N 2013 CN128 (arc=43 days, H=19.9 ~355m) from ARO Westfield (March 29.13-15p3)
- K13C35W 2013 CW35 (arc=48 days, H=21.0 ~214m) from SSS (March 25.64-67p2)
- K13A76U 2013 AU76 (Q=4.768 AU, arc=85 days, H=18.2 ~776m) from ARO Westfield (March 29.06-08p4)
- K13A60M 2013 AM60 (Q=5.086 AU, arc=81 days, H=18.4 ~708m) from ARO Westfield (March 29.05p3)
- K12V93V 2012 VV93 (arc=2 opp, H=17.4 ~1.12 km) from NEAT's Mt. Palomar telescope (2005 Sept. 2.42-47p3)
- K12M11M 2012 MM11 (arc=224 days, H=20.3 ~295m) from ARO Westfield (Jan. 15.33-37p3 at V=22.1-3)
- K12M04R 2012 MR4 (i=53.1°, arc=2 opp, H=17.6 ~1.02 km) from SSS (March 29.39-41p2)
- K11B24K 2011 BK24 (arc=2 opp, H=19.6 ~407m) from ARO Westfield (March 28.11-12p4)
- K09U03M 2009 UM3 (Q=4.353 AU, arc=4 opp, H=17.9 ~891m) from ARO Westfield (March 29.19-20p5)
- K09B02L 2009 BL2 (arc=2 opp, H=19.4 ~446m) from ARO Westfield (March 28.05-06p4)
- K07E88P 2007 EP88 (q=0.096 AU, arc=3 opp, H=18.5 ~676m) from ARO Westfield (March 28.05-06p4)
- K05YI0O 2005 YO180 (arc=6 opp, H=20.3 ~295m) from ARO Westfield (March 29.09-10p5)
- Z7618 357618 2005 EM30 from ARO Westfield (March 29.18-19p4)
- Z0513 350513 2000 BG19 from ARO Westfield (March 28.10-11p3)
- Y3098 343098 2009 DV42 from ARO Westfield (March 29.16-18p4)
- R5974 275974 2001 XD from ARO Westfield (March 28.15-16p3)
- O2216 242216 2003 RN10 from SSS (March 29.51p1)
- G3696 163696 2003 EB50 from ARO Westfield (March 28.31-33p4)
- F3267 153267 2001 CB32 from ARO Westfield (March 29.19-20p3)
- F2952 152952 2000 GC2 from ARO Westfield (March 28.17-18p4)
- D6993 136993 1998 ST49 from ARO Westfield (March 29.17p2)
- 25916 25916 2001 CP44 from ARO Westfield (March 28.08-09p3)
- 22771 22771 1999 CU3 from Elche Obs. (March 29.93p3)
- 06047 6047 1991 TB1 from ARO Westfield (March 28.06-08p5 & 29.11p4)
- 05645 5645 1990 SP from ARO Westfield (March 28.25-28p8) and Elche Obs. (March 29.94p3)
- 03199 3199 Nefertiti (1982 RA) from SSS (March 29.62-67p4)
- 01866 1866 Sisyphus (1972 XA) from ARO Westfield (March 28.28-29p3)
- 01864 1864 Daedalus (1971 FA) from ARO Westfield (March 28.13-14p4)
- 01036 1036 Ganymed (1924 TD) from SSS (March 27.50-54p4)
Observers on 30 March '13
Nine observers appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 34 in MPEC 2013-F59 -- 2013 FM9, 2013 FB8, 2013 EW27, 2013 EW108, 2013 EV108, 2013 EQ4, 2013 ED28, 2013 EA, 2013 CU129, 2013 CN222, 2013 CN128, 2013 AU76, 2013 AM60, 2012 MM11, 2011 BK24, 2009 UM3, 2009 BL2, 2007 EP88, 2005 YO180, 68278, 68216, 357618, 350513, 343098, 275974, 25916, 163696, 153267, 152952, 136993, 6047, 5645, 1866, 1864|
|I57||Elche Obs., 3 in MPEC 2013-F59 -- 68216, 22771, 5645|
|711||McDonald Obs. in Texas, 1 in MPEC 2013-F59 -- 2013 FB8|
|644||NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2013-F59 -- 2012 VV93|
|W71||Rand II Obs., 1 in MPEC 2013-F59 -- 2012 QG42|
|E12||Siding Spring Survey (SSS) in New South Wales, 6 in MPEC 2013-F59 -- 2013 FY13, 2013 CW35, 2012 MR4, 242216, 3199, 1036|
|G40||Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-F59 -- 2013 EA|
|J84||South Obs. in England, 1 in MPEC 2013-F59 -- 2013 FB8|
|691||Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-F59 -- 2013 EM20|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 30 March '13
Notes for Today's Latest Risk Assessments
|2013 EH68||NEODyS||1507||2095-2095||2||7.44e-08||-6.02||-6.05||0||NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2013-03-13.469 to 2013-03-20.289."|
|2013 ED28||JPL Sentry||1507||2036||1||1.5e-05||-2.52||-2.52||0||JPL: "Analysis based on 41 observations spanning 21.868 days (2013-Mar-07.21735 to 2013-Mar-29.085141)." Diameter approximately 0.170 km. from mean, weighted H=21.4.|
|NEODyS||1507||R E M O V E D||-|
|2008 AO112||JPL Sentry||1729||R E M O V E D||JPL: Risk listing removed at 1645 UTC.|
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 '13
Times are UTC for when items were noted or added by The Tracking News.
|1729||Noted that JPL Sentry has removed 2008 AO112 as an impact risk - see above|
|1511||Generated Traffic Report|
|1507||Noted that JPL Sentry has updated its 2013 ED28 risk assessment - see above|
Noted that NEODyS has removed 2013 ED28 as an impact risk - see above
Noted that NEODyS has updated its 2013 EH68 risk assessment - see above
Grabbed MPEC 2013-F59 - Daily Orbit Update - see above