Contents on 22 September '13
- Traffic Report -- two objects
- IAU Minor Planet Center
- Observers -- seven observers
- Impact Risk Monitoring -- nothing to report
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 514 risk-listed objects, 29 have had news in the last 31 days. Updated at 1508 UTC on 22 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 22 September '13
Two objects reported inside ten LD
Two objects are reported flying within ten lunar distances (LD) of our planet today. Within Earth's Hill sphere, tiny risk-listed intruder 2013 RZ53, possibly an artificial object, is outbound from 1.32 to 1.64 LD. And, further out, 2013 RF74 departs from inside ten LD, moving from 9.54 to 11.54 LD. No other objects are known to be coming this close until mid-November.
This report was generated at 1510 UTC with astrometry reported from a couple weeks ago in today's DOU MPEC for departed 2013 QE16.
Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. 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 22 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, five were "one nighters." So far The Tracking News has counted a total of seventeen 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 22 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 close-passing objects
- K13Q16E 2013 QE16 (arc=9 days, H=26.5 ~17m) from KLENOT (Sept. 6.89-90p6)
- Observation campaigns (radar support, potential mission destinations)
- W9437 329437 2002 OA22 (PMD, radar) from Castelmartini Obs. (Sept. 20.99p3)
-- Potential mission destinations list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of small asteroids (H>22.0)
- K12V05H 2012 VH5 (arc=2 opp, H=22.5 ~107m) from David Tholen's team on Mauna Kea (Aug. 16.50-51p3)
- Observations of other asteroidal objects
- K13S00F 2013 SF (arc=5 days, H=19.1 ~513m) from Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) (Sept. 22.10p4)
- K13R80X 2013 RX80 (arc=6 days, H=17.9 ~891m) from Wiggins Obs. (Sept. 21.33-34p4)
- K13R73W 2013 RW73 (arc=8 days, H=20.4 ~282m) from DGRO-RH (Sept. 22.12-13p3)
- K13Q11H 2013 QH11 (arc=18 days, H=19.6 ~407m) from KLENOT (Sept. 6.90-91p4)
- K13Q10J 2013 QJ10 (arc=28 days, H=19.5 ~426m) from Castelmartini Obs. (Sept. 20.86p3) and DGRO-RH (Sept. 22.10p3)
- K13P06X 2013 PX6 (Q=4.286 AU, arc=2 opp, H=18.4 ~708m) from Castelmartini Obs. (Sept. 4.08p3) and New Millennium Obs. (Sept. 18.07p2 & 18.11p1)
- K13O09M 2013 OM9 (arc=53 days, H=18.4 ~708m) from Castelmartini Obs. (Sept. 20.82-83p3)
- K12T00S 2012 TS (arc=2 opp, H=20.8 ~234m) from Castelmartini Obs. (Sept. 20.90-91p3)
- K10T54N 2010 TN54 (arc=3 opp, H=19.2 ~490m) from Castelmartini Obs. (Sept. 20.91-92p3)
- K02PD0C 2002 PC130 (arc=4 opp, H=18.3 ~741m) from Tholen team/Mauna Kea (Sept. 12.63p3)
- a8184 368184 2000 RN77 from Castelmartini Obs. (Sept. 20.90p3)
- Z5256 355256 2007 KN4 from Castelmartini Obs. (Sept. 20.93-94p3)
- Z4952 354952 2006 FJ9 from Pan-STARRS 1 (PS1) (Sept. 21.26-27p2)
- W6946 326946 2004 EN20 from Castelmartini Obs. (Sept. 20.92-93p3)
- R5677 275677 2000 RS11 from Castelmartini Obs. (Sept. 20.89p3)
- Q9690 269690 1996 RG3 from Castelmartini Obs. (Sept. 20.95p3)
- P2373 252373 2001 SA270 from Castelmartini Obs. (Sept. 20.97-98p3)
- P0620 250620 2005 GE59 from Castelmartini Obs. (Sept. 20.85p3)
- O3147 243147 2007 TX18 from Castelmartini Obs. (Sept. 20.81-82p3)
- M0909 220909 2005 EO1 from Castelmartini Obs. (Sept. 20.96p3)
- F9399 159399 1998 UL1 from PS1 (Sept. 21.41-42p2)
- 54789 54789 2001 MZ7 from PS1 (Sept. 21.33-34p2)
- 07088 7088 Ishtar (1992 AA) from PS1 (Sept. 21.33-34p2)
Observers on 22 September '13
Seven observers appear in today's MPEC.
|Code||Observer / observatory|
|160||Castelmartini Obs. in Italy, 15 in MPEC 2013-S27 -- 2013 QJ10, 2013 PX6, 2013 OM9, 2012 TS, 2010 TN54, 368184, 355256, 329437, 326946, 275677, 269690, 252373, 250620, 243147, 220909|
|G48||Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPEC 2013-S27 -- 2013 SF, 2013 RW73, 2013 QJ10|
|246||KLENOT in the Czech Republic, 2 in MPEC 2013-S27 -- 2013 QH11, 2013 QE16|
|5682||David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2013-S27 -- 2012 VH5, 2002 PC130|
|A24||New Millennium Obs. in Italy, 1 in MPEC 2013-S27 -- 2013 PX6|
|F51||Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2013-S27 -- 54789, 354952, 159399, 7088|
|718||Wiggins Obs. in Utah, 1 in MPEC 2013-S27 -- 2013 RX80|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 22 September '13
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.