Contents on 12 September '13
- Traffic Report -- no objects
- IAU Minor Planet Center
- Observers -- thirteen observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 509 risk-listed objects, 29 have had news in the last 31 days. Updated at 1447 UTC on 12 Sept.
- 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 - last updated 20 Feb. (discontinued)
- 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 12 September '13
No objects reported inside ten LD
No objects are reported to be within ten lunar distances (LD) of Earth today, and none are known to be coming in until mid-November.
This report was generated at 1449 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 12 September '13
The MPC's NEO Confirmation Page has 16 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had sixteen objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 22 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 12 September '13
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
- K13R06E 2013 RE6 (arc=2 opp, H=21.4 ~178m) from NEAT's Mt. Palomar telescope (2001 Oct. 17.16-21p3)
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K13R36E 2013 RE36 (i=45.3°, arc=4 days, H=24.2 ~49m) from Marco Micheli on Mauna Kea (Sept. 11.29-30p3)
- K13Q17N 2013 QN17 (arc=13 days, H=24.0 ~54m) from the Spacewatch 1.8m telescope (Sept. 12.18p3)
- K13P07A 2013 PA7 (arc=39 days, H=22.5 ~107m) from Spacewatch 1.8m (Sept. 12.19p3)
- K08CB9J 2008 CJ119 (arc=2 opp, H=21.8 ~148m) from the Mt. Lemmon Survey (MLS) (March 16.44-46p4 at V=21.2-22.1) and Pan-STARRS 1 (PS1) (April 9.45-50p3)
- Observations of other asteroidal objects
- K13Q11C 2013 QC11 (arc=15 days, H=21.6 ~162m) from Astronomical Research Obs. Westfield (Sept. 11.13-15p3) and Spacewatch 1.8m (Sept. 12.21-22p3)
- K13Q10M 2013 QM10 from ARO Westfield (Sept. 11.11-12p4)
- K13Q10J 2013 QJ10 (arc=18 days, H=19.5 ~426m) from Bigmuskie Obs. (Sept. 11.81-83p3)
- K13P26E 2013 PE26 (i=45.6°, arc=35 days, H=17.8 ~933m) from Spacewatch 1.8m (Sept. 12.16-17p3)
- K13G07Y 2013 GY7 (arc=162 days, H=20.4 ~282m) from Spacewatch 1.8m (Sept. 12.13-14p3)
- K12T00S 2012 TS (arc=2 opp, H=20.7 ~245m) from Verona Obs. (Sept. 11.89-91p4)
- K11UA6U 2011 UU106 (arc=4 opp, H=18.7 ~616m) from ARO Westfield (Sept. 11.16-21p3 at V=22.1-4)
- K11SH3D 2011 SD173 (arc=4 opp, H=19.5 ~426m) from the Palomar Transient Factory (PTF) (Sept. 11.30p1 & 11.35-39p2)
- K10A02K 2010 AK2 (i=45.1°, arc=4 opp, H=19.0 ~537m) from Spacewatch 1.8m (Sept. 12.12-13p3)
- K08D00V 2008 DV (arc=3 opp, H=18.4 ~708m) from ARO Westfield (Sept. 11.22-25p3)
- P5071 255071 2005 UH6 from NEAT's USAF Haleakala telescope (2002 Oct. 26.21-23p3 & 2002 Oct. 31.33-36p3)
- P1346 251346 2007 SJ from PTF (Sept. 11.25p1 & 11.39-43p2)
- O3147 243147 2007 TX18 from Verona Obs. (Sept. 11.86-88p4)
- N4341 234341 2001 FZ57 from NEAT/Hawaii (2001 March 21.64-65p2, 2001 April 18.32-34p3 & 2001 May 10.38p1)
- L7837 217837 2001 LC from NEAT/Hawaii (2001 June 25.53-55p3 & 2001 June 28.35-37p3)
- I5702 185702 1998 HK3 from SONEAR Obs. (Sept. 11.18-19p3)
- G8378 168378 1997 ET30 from Elena Remote Obs. (Sept. 11.26-28p4)
- E0039 140039 2001 SO73 from SONEAR Obs. (Sept. 11.11p3)
- 86829 86829 2000 GR146 from SONEAR Obs. (Sept. 11.11-13p3)
- 10115 10115 1992 SK from Estrella de Mar Obs. (Sept. 11.09-16p3)
- 03352 3352 McAuliffe (1981 CW) from SONEAR Obs. (Sept. 11.17-18p3)
Observers on 12 September '13
Thirteen observers appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2013-R82 -- 2013 QM10, 2013 QC11, 2011 UU106, 2008 DV|
|B88||Bigmuskie Obs. in Italy, 1 in MPEC 2013-R82 -- 2013 QJ10|
|G32||Elena Remote Obs., 1 in MPEC 2013-R82 -- 168378|
|Z81||Estrella de Mar Obs., 1 in MPEC 2013-R82 -- 10115|
|568_||Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2013-R82 -- 2013 RE36|
|G96||Mt. Lemmon Survey in Arizona, 1 in MPEC 2013-R82 -- 2008 CJ119|
|644||NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2013-R82 -- 2013 RE6|
|608||NEAT's USAF Haleakala telescope in Hawaii, 3 in MPEC 2013-R82 -- 255071, 234341, 217837|
|I41||Palomar Transient Factory (PTF) in southern California, 2 in MPEC 2013-R82 -- 2011 SD173, 251346|
|F51||Pan-STARRS 1 in Hawaii, 1 in MPEC 2013-R82 -- 2008 CJ119|
|Y00||SONEAR Obs. in Brazil, 4 in MPEC 2013-R82 -- 86829, 185702, 140039, 3352|
|291||Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2013-R82 -- 2013 QN17, 2013 QC11, 2013 PE26, 2013 PA7, 2013 GY7, 2010 AK2|
|A48||Verona Obs. in Italy, 2 in MPEC 2013-R82 -- 2012 TS, 243147|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 12 September '13
Notes for Today's Latest Risk Assessments
|2008 EM68||JPL Sentry||0340||2013-2110||563||4.6e-06||-5.77||-6.28||0||JPL: "Analysis based on 11 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183)." Diameter approximately 0.010 km. from mean, weighted H=27.5.|
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.