Contents on 23 June '13
- Traffic Report -- no objects
- IAU Minor Planet Center
- Observers -- nine observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 504 risk-listed objects, 14 have had news in the last 31 days. Updated at 1432 UTC on 23 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 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 23 June '13
No objects reported inside ten LD
No objects are reported traveling within ten lunar distances (LD) of Earth today, and none are known to be coming in until late July.
This report was generated at 1443 UTC.
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 23 June '13
The MPC's NEO Confirmation Page has 12 listings
When last checked at 2253 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had twelve objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of fourteen 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 23 June '13
Minor Planet Electronic Circulars
As of last check at 2253 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2013-M35 time-stamped "06:06 UT" - Daily Orbit Update - see below
- MPEC 2013-M36 time-stamped "15:30 UT" - 2012 HA2
MPEC 2013-M36 - "15:30 UT" - 2012 HA2
- K12H02A 2012 HA2 (i=38.5°, H=21.2 ~195m) from David Tholen's team on Mauna Kea (June 9.33p1 at R=23.7 & 21.31-33p2 at R=23.4-5)
- Observations of risk-listed objects
- K13E28D 2013 ED28 (arc=35 days, H=21.4 ~178m) from Spacewatch via Kitt Peak Natl. Obs. (KPNO) (April 10.25-26p3 at R=22.1-3 & 11.29-30p3 at R=21.7-22.0)
- Observation campaigns (radar support, potential mission destinations)
- S5263 285263 1998 QE2 (radar) from Olmen Obs. (June 21.92-93p4 & 22.00-01p4) and Terrassa Obs. (June 22.97-98p9)
- G3249 163249 2002 GT (PMD) from program code 1 via Slooh.com Canary Islands Obs. (June 21.96p1, 22.09-12p3 & 22.16p1) and Wiggins Obs. (June 22.23-25p4)
-- Potential mission destinations list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of small asteroids (H>22.0)
- K13L02B 2013 LB2 (arc=17 days, H=22.7 ~98m) from Astronomical Research Obs. Westfield (June 21.22-23p2)
- Observations of other asteroidal objects
- K13L31N 2013 LN31 (Q=4.062 AU, arc=7 days, H=20.0 ~339m) from ARO Westfield (June 21.16-17p5) and Wiggins Obs. (June 22.27-28p3)
- K13L25H 2013 LH25 (Q=6.644 AU, arc=13 days, H=17.2 ~1.23 km) from ARO Westfield (June 21.12-14p3)
- K13L01B 2013 LB1 (arc=20 days, H=17.5 ~1.07 km) from ARO Westfield (June 21.33-34p5)
- K13G79Z 2013 GZ79 (arc=82 days, H=19.9 ~355m) from ARO Westfield (June 21.24-25p2)
- K13F13W 2013 FW13 (arc=46 days, H=21.7 ~155m) from Spacewatch/KPNO (April 10.44-45p6)
- K13E27W 2013 EW27 (arc=108 days, H=17.9 ~891m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 21.95-96p4)
- K13C82T 2013 CT82 (arc=62 days, H=18.1 ~812m) from Spacewatch/KPNO (April 11.24-29p4 at R=22.0-22.4)
- K13B76O 2013 BO76 (arc=102 days, H=20.2 ~309m) from Spacewatch/KPNO (April 10.16-17p4 & 11.15p3)
- K13B73O 2013 BO73 (arc=79 days, H=19.9 ~355m) from Spacewatch/KPNO (April 11.17-19p3 at R=22.4-6)
- K13B18J 2013 BJ18 (arc=138 days, H=20.2 ~309m) from Spacewatch/KPNO (April 8.18-20p5 & 10.18-19p3)
- K11S05R 2011 SR5 (q=0.347 AU, arc=3 opp, H=20.7 ~245m) from Spacewatch/KPNO (April 10.49p3 at R=22.3 & 11.49-50p2 at R=22.0)
- K10S16O 2010 SO16 (arc=2 opp, H=20.5 ~269m) from Holmes/CTIO (June 21.95-96p5)
- K10KC7Y 2010 KY127 (i=60.3°, q=0.297 AU, Q=4.698 AU, arc=4 opp, H=16.6 ~1.62 km) from Spacewatch/KPNO (April 10.28-29p3 at R=22.3)
- K10K10R 2010 KR10 (arc=2 opp, H=19.5 ~426m) from Spacewatch/KPNO (April 8.29-30p4 & 10.34p3)
- K10J35A 2010 JA35 (arc=2 opp, H=20.4 ~282m) from Spacewatch/KPNO (April 10.36-37p3 at R=22.6 & 11.37-38p3 at R=22.7-8)
- K10H80R 2010 HR80 (arc=3 opp, H=19.8 ~371m) from Spacewatch/KPNO (April 8.21-22p3 at R=22.0-22.2 & 11.25-27p6 at R=21.9-22.2)
- K09Q08L 2009 QL8 (arc=3 opp, H=19.5 ~426m) from Spacewatch/KPNO (April 8.33-34p3 at R=22.1-4 & 10.39-40p3 at R=22.3)
- Z0964 350964 2003 BT35 from Pan-STARRS 1 (PS1) (June 22.48-50p3)
- Q5032 265032 2003 OU from Spacewatch/KPNO (April 8.31-32p3)
Observers on 23 June '13
Nine observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 5 in MPEC 2013-M35 -- 2013 LN31, 2013 LH25, 2013 LB2, 2013 LB1, 2013 GZ79|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2013-M35 -- 2013 EW27, 2010 SO16|
|695^||Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 13 in MPEC 2013-M35 -- 2013 FW13, 2013 ED28, 2013 CT82, 2013 BO76, 2013 BO73, 2013 BJ18, 2011 SR5, 2010 KY127, 2010 KR10, 2010 JA35, 2010 HR80, 2009 QL8, 265032|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-M36 -- 2012 HA2|
|C23||Olmen Obs. in Belgium, 1 in MPEC 2013-M35 -- 285263|
|F51||Pan-STARRS 1 in Hawaii, 1 in MPEC 2013-M35 -- 350964|
|G401||program code 1 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-M35 -- 163249|
|C35||Terrassa Obs., 1 in MPEC 2013-M35 -- 285263|
|718||Wiggins Obs. in Utah, 2 in MPEC 2013-M35 -- 2013 LN31, 163249|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 23 June '13
Notes for Today's Latest Risk Assessments
|2013 ED28||JPL Sentry||1423||R E M O V E D||JPL: Risk listing removed at 0954 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 23 June '13
Times are UTC for when items were noted or added by The Tracking News.
|1807||Grabbed MPEC 2013-M36 - 2012 HA2 - see above|
|1443||Generated Traffic Report|
|1423||Noted that JPL Sentry has removed 2013 ED28 as an impact risk - see above|
Grabbed MPEC 2013-M35 - Daily Orbit Update - see above