Contents on 29 October '12
- Traffic Report -- five objects
- IAU Minor Planet Center
- Observers -- eight observers
- Impact Risk Monitoring -- nothing to report
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 464 risk-listed objects, 25 have had news in the last 30 days. Updated at 1514 UTC on 29 Oct.
- 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 14 Sept.
- 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 29 October '12
Five objects reported inside ten LD
There are five objects reported traveling within ten lunar distances (LD) of our planet today. Within Earth's Hill sphere, risk-listed 2012 UU169 comes its closest to Earth this time around, reaching 2.98 LD at 1201 UTC. Further out, newly announced 2012 UK171 is outbound from 7.54 to 7.85 LD while 2012 UX136 is inbound from 8.7 to 7.6 LD* and new discovery 2012 UL171 from 8.9 to 8.5 LD*, and 2012 UW9 may be coming its closest to Earth on this passage -- 9.4 LD at 0324 UTC (uncertainty: +/- 5.4333 hours).
Up next, 2012 UV136 arrives inside ten LD on November 1st, risk-listed 2012 UY68 arrives on November 7th, and radar target 2010 JK1 on November 22nd.
This report was updated at 1614 UTC with follow-up in today's DOU MPEC for 2012 UK171. Today's first report was generated at 0050 UTC with new discoveries 2012 UL171 (MPEC) and 2012 UK171 (MPEC) announced yesterday.
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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.
NEOCP Activity on 29 October '12
The MPC's NEO Confirmation Page has 25 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 25 objects listed. Of these, 20 were "one nighters."
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 29 October '12
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2012-U118 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2012-U119 time-stamped "14:21 UT" - 2012 GS5
MPEC 2012-U119 - "14:21 UT" - 2012 GS5
- K12G05S 2012 GS5 (Q=6.290 AU, H=18.7 ~616m) from David Tholen's team on Mauna Kea (Oct. 10.54-56p3 at R=22.0-22.1 & 17.59-60p3 at R=21.6-7)
- Observations of close-passing objects
- K12UH1K 2012 UK171 (arc=3 days, H=24.6 ~41m) from Bisei Spaceguard Center (Oct. 28.71-72p8)
- Observation campaigns (radar support, potential mission destinations)
- R5611 275611 1999 XX262 (PMD) from Desert Moon Obs. (Oct. 28.06-12p3)
- L4869 214869 2007 PA8 (radar) from Desert Moon Obs. (Oct. 28.32p5)
-- Potential mission destinations list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of small asteroids (H>22.0)
- K12U69B 2012 UB69 (arc=3 days, H=22.1 ~129m) from Astronomical Research Obs. Westfield (Oct. 25.18-19p5)
- Observations of other asteroidal objects
- K12UD6S 2012 US136 (i=52.0°, q=0.379 AU, Q=8.875 AU, arc=8 days, H=15.9 ~2.24 km) from Tesla Obs. (Oct. 28.85-87p6)
- K12O00O 2012 OO (arc=104 days, H=20.6 ~257m) from Pan-STARRS 1 (PS1) (Oct. 28.45-46p2)
- K09L00S 2009 LS (i=45.0°, arc=3 opp, H=18.0 ~851m) from Inastars Obs. (Oct. 28.77p5)
- K07VO3O 2007 VO243 (arc=2 opp, H=19.4 ~446m) from PS1 (Oct. 28.45-46p2)
- J98W04L 1998 WL4 (arc=3 opp, H=19.5 ~426m) from the Mt. Lemmon Survey (MLS) (2005 Nov. 25.27-29p4)
- W9340 329340 2001 LM5 from PS1 (Oct. 28.28-29p2)
- Q5962 265962 2006 CG from Desert Moon Obs. (Oct. 28.16-19p3)
- D8847 138847 2000 VE62 from Desert Moon Obs. (Oct. 28.22-26p3)
- D7052 137052 Tjelvar (1998 VO33) from PS1 (Oct. 28.53-56p4)
- B2985 112985 2002 RS28 from Desert Moon Obs. (Oct. 28.44-46p5)
Observers on 29 October '12
Eight observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2012-U118 -- 2012 UB69|
|300||Bisei Spaceguard Center in Japan, 1 in MPEC 2012-U118 -- 2012 UK171|
|448||Desert Moon Obs. in New Mexico, 5 in MPEC 2012-U118 -- 275611, 265962, 214869, 138847, 112985|
|B15||Inastars Obs. in Germany, 1 in MPEC 2012-U118 -- 2009 LS|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-U119 -- 2012 GS5|
|G96||Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-U118 -- 1998 WL4|
|F51||Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2012-U118 -- 2012 OO, 2007 VO243, 329340, 137052|
|I76||Tesla Obs. in Spain, 1 in MPEC 2012-U118 -- 2012 US136|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 29 October '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.