Contents on 4 June '12
- Traffic Report -- three objects
- IAU Minor Planet Center
- Observers -- six observers
- Impact Risk Monitoring -- nothing to report
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 447 risk-listed objects, 19 have had news in the last 31 days. Updated at 1502 UTC on 4 June.
- 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 28 May
- 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 4 June '12
Three objects reported inside ten LD
There are three asteroids reported inside ten lunar distances (LD) of our planet today. 2012 LA is outbound from 8.0 to 8.2 LD* while 2012 KT12 departs from inside ten LD, passing from 9.31 to 10.11 LD, and 2012 KC45 also leaves ten LD, moving from 9.84 to 11.19 LD.
No other objects are known to come within ten LD until November.
This report was generated at 1504 UTC with follow-up in today's DOU MPEC for 2012 LA and 2012 KZ41.
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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.
NEOCP Activity on 4 June '12
The MPC's NEO Confirmation Page has 4 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four objects listed. Of these, two were "one nighters." So far The Tracking News has counted a total of five 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 4 June '12
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of recently (no longer) risk-listed objects
- K12K18N 2012 KN18 (small asteroid, Q=4.339 AU, arc=12 days, H=24.6 ~41m) from Astronomical Research Obs. Westfield (June 3.27-29p3)
- Observations of close-passing objects
- K12L00A 2012 LA (arc=2 days, H=27.4 ~11m, PMD candidate) from ARO Westfield (June 3.24-26p3)
- K12K41Z 2012 KZ41 (arc=7 days, H=25.1 ~32m) from Schiaparelli Obs. (May 30.06-07p3)
- Observation campaigns (radar support, potential mission destinations)
- K07L00E 2007 LE (arc=3 opp, H=19.4 ~446m, radar) from Schiaparelli Obs. (May 30.01p5) and Pear Tree Obs. (June 3.08-09p3)
-- Potential mission destinations (PMD) list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K12K18O 2012 KO18 (arc=12 days, H=22.1 ~129m) from Schiaparelli Obs. (May 29.86-89p3) and ARO Westfield (June 3.13-15p3)
- K12K03Z 2012 KZ3 (arc=15 days, H=24.7 ~39m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (May 31.18-20p3)
- K12K00X 2012 KX (arc=18 days, H=23.4 ~71m) from ARO Westfield (June 3.29-31p7)
- K12J11W 2012 JW11 (arc=16 days, H=21.9 ~141m) from Holmes/CTIO (May 31.16-17p3)
- K12J04Q 2012 JQ4 (arc=18 days, H=21.9 ~141m) from Holmes/CTIO (May 31.13-14p4)
- Observations of other asteroidal objects
- K12K47F 2012 KF47 (arc=3 days, H=20.8 ~234m) from ARO Westfield (June 3.16-18p3)
- K12K45M 2012 KM45 (arc=5 days, H=18.5 ~676m) from ARO Westfield (June 3.10-12p5)
- K12K18L 2012 KL18 (arc=11 days, H=18.9 ~562m) from Holmes/CTIO (May 31.21-22p4)
- K12K06C 2012 KC6 (arc=16 days, H=21.7 ~155m) from ARO Westfield (June 3.19-21p3)
- K12J16B 2012 JB16 (arc=20 days, H=19.7 ~389m) from Schiaparelli Obs. (May 29.97-98p3) and ARO Westfield (June 3.18-19p3)
- K12H40N 2012 HN40 (Q=4.516 AU, arc=38 days, H=20.3 ~295m) from Schiaparelli Obs. (May 29.92-93p3)
- K12H15S 2012 HS15 (arc=42 days, H=20.5 ~269m) from ARO Westfield (June 3.12-14p3)
- K12H01J 2012 HJ1 (arc=45 days, H=17.8 ~933m) from Schiaparelli Obs. (May 29.90-91p2)
- K12F00J 2012 FJ (i=40.1°, arc=79 days, H=18.8 ~589m) from ARO Westfield (June 3.22-23p3)
- K12D61H 2012 DH61 (arc=92 days, H=19.1 ~513m) from Schiaparelli Obs. (May 29.95-96p3)
- K12D30U 2012 DU30 (arc=2 opp, H=18.2 ~776m) from ARO Westfield (June 3.31-33p3)
- K11WD4V 2011 WV134 (Q=4.676 AU, arc=3 opp, H=17.1 ~1.29 km) from Starry Wanderer Obs. (June 3.87-88p2)
- K10O22S 2010 OS22 (arc=3 opp, H=18.1 ~812m) from David Tholen's team on Mauna Kea (May 22.61-62p2)
- K10L14J 2010 LJ14 (arc=2 opp, H=17.7 ~977m) from ARO Westfield (June 3.19-20p3)
- K06V13Y 2006 VY13 (Q=4.718 AU, arc=2 opp, H=17.2 ~1.23 km) from ARO Westfield (June 3.21-22p4)
Observers on 4 June '12
Six observers appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 13 in MPEC 2012-L10 -- 2012 LA, 2012 KX, 2012 KO18, 2012 KN18, 2012 KM45, 2012 KF47, 2012 KC6, 2012 JB16, 2012 HS15, 2012 FJ, 2012 DU30, 2010 LJ14, 2006 VY13|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPEC 2012-L10 -- 2012 KZ3, 2012 KL18, 2012 JW11, 2012 JQ4|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-L10 -- 2010 OS22|
|H23||Pear Tree Obs. in Florida, 1 in MPEC 2012-L10 -- 2007 LE|
|204||Schiaparelli Obs. in Italy, 7 in MPEC 2012-L10 -- 2012 KZ41, 2012 KO18, 2012 JB16, 2012 HN40, 2012 HJ1, 2012 DH61, 2007 LE|
|C36||Starry Wanderer Obs. in Belarus, 1 in MPEC 2012-L10 -- 2011 WV134|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 4 June '12
At last check (NEODyS and JPL at 2359 UTC) there was no risk monitoring news to report yet today. Visit the CRT to view activity in the last four weeks and our ephemerides page for a complete list of risk-rated objects under current observation or having recent news.