Contents on 5 September '12
- Traffic Report -- no objects
- IAU Minor Planet Center
- Observers -- ten observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 446 risk-listed objects, 15 have had news in the last 32 days. Updated at 1617 UTC on 5 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 - updated 27 July 2x
- 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 5 September '12
No objects reported inside ten LD
No objects are reported to be inside ten lunar distances (LD) of Earth today. Approaching next, radar target 2012 QG42 arrives inside ten LD on September 11th and 2010 JK1 on November 22nd.
This report was generated at 1618 UTC with follow-up in today's DOU MPEC for 2012 QG42.
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 5 September '12
The MPC's NEO Confirmation Page has 1 listing
When last checked at 2015 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one object listed. This was a "one nighter." 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 5 September '12
Minor Planet Electronic Circulars
As of last check at 2015 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of risk-listed objects
- K12P00X 2012 PX (small asteroid, arc=28 days, H=23.2 ~78m) from Astronomical Research Obs. Westfield (Sept. 4.27-29p8)
- Observations of close-passing objects
- K12Q42G 2012 QG42 (arc=10 days, H=20.5 ~269m, radar support) from Urseanu Obs. (Sept. 3.86-89p11 & 3.94-95p3), Cygnus Obs. (Sept. 3.93-97p3), ARO Westfield (Sept. 4.19-20p8), Wiggins Obs. (Sept. 4.27-28p3), Ernesto Guido via Faulkes Telescope South (Sept. 4.48p4), the Siding Spring Survey (SSS) (Sept. 4.61-62p3), Olmen Obs. (Sept. 4.86-87p7), Teide Obs. (Sept. 4.91-92p2 & 4.97-99p2), and Petit Jean Mtn. South Obs. (PJMSO) (Sept. 5.17-18p10)
- Observation campaigns (radar support, potential mission destinations)
- 04769 4769 Castalia (1989 PB) (radar) from SSS (July 18.67-71p4, Aug. 13.51-55p4, 16.57-59p3 & Sept. 4.40-43p3)
-- Planetary radar schedules: Arecibo & Goldstone
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K12Q49G 2012 QG49 (arc=7 days, H=22.6 ~102m) from ARO Westfield (Sept. 4.11-12p3)
- K12Q18C 2012 QC18 (arc=9 days, H=24.0 ~54m) from ARO Westfield (Sept. 4.16p4)
- K12P24P 2012 PP24 (arc=19 days, H=22.2 ~123m) from ARO Westfield (Sept. 4.18p3)
- K05R02Z 2005 RZ2 (arc=2 opp, H=23.3 ~74m) from ARO Westfield (Sept. 4.26-27p3)
- K12Q17X 2012 QX17 (arc=10 days, H=21.8 ~148m) from ARO Westfield (Sept. 4.17p3)
- K12F58G 2012 FG58 (arc=151 days, H=22.0 ~135m) from David Tholen's team on Mauna Kea (Aug. 26.46-47p3 at R=22.4-6)
- Observations of other asteroidal objects
- K12Q50E 2012 QE50 (arc=8 days, H=18.7 ~616m) from ARO Westfield (Sept. 4.20-23p5), Wiggins Obs. (Sept. 4.23-25p3), and PJMSO (Sept. 5.20-22p8)
- K12Q49H 2012 QH49 (i=37.8°, Q=4.308 AU, arc=7 days, H=20.9 ~224m) from SSS (Sept. 4.65p2)
- K12Q45J 2012 QJ45 (arc=9 days, H=20.8 ~234m) from ARO Westfield (Sept. 4.23-25p3) and SSS (Sept. 4.63p2)
- K12Q42F 2012 QF42 (arc=9 days, H=21.4 ~178m) from ARO Westfield (Sept. 4.23-25p6) and SSS (Sept. 4.64p2)
- K12Q17B 2012 QB17 (arc=11 days, H=19.9 ~355m) from ARO Westfield (Sept. 4.12-13p3)
- K12Q14Y 2012 QY14 (arc=14 days, H=20.0 ~339m) from ARO Westfield (Sept. 4.17-18p3)
- K12Q02J 2012 QJ2 (arc=19 days, H=20.3 ~295m) from ARO Westfield (Sept. 4.25-27p4)
- K12P20C 2012 PC20 (arc=21 days, H=21.4 ~178m) from ARO Westfield (Sept. 4.18-19p3)
- K12P17S 2012 PS17 (arc=24 days, H=20.0 ~339m) from ARO Westfield (Sept. 4.19-20p3) and PJMSO (Sept. 5.16-17p7)
- K12P05G 2012 PG5 (Q=4.825 AU, arc=28 days, H=18.7 ~616m) from ARO Westfield (Sept. 4.21-23p6) and PJMSO (Sept. 5.18-19p7)
- K12O00O 2012 OO (arc=50 days, H=20.6 ~257m) from ARO Westfield (Sept. 4.34-35p3)
- K12N00P 2012 NP (arc=53 days, H=21.3 ~186m) from ARO Westfield (Sept. 4.29-30p3)
- K12M02N 2012 MN2 (arc=80 days, H=20.6 ~257m) from ARO Westfield (Sept. 4.30-31p4)
- K12L09K 2012 LK9 (Q=4.068 AU, arc=75 days, H=17.9 ~891m) from Tholen team/Mauna Kea (Aug. 26.28p1)
- K12B20C 2012 BC20 (arc=227 days, H=18.7 ~616m) from ARO Westfield (Sept. 4.28-29p6)
- K10O22S 2010 OS22 (arc=3 opp, H=18.1 ~812m) from PJMSO (Sept. 5.13-14p5)
- K06D00Y 2006 DY (arc=2 opp, H=18.4 ~708m) from ARO Westfield (Sept. 4.36-37p4)
- K00S08D 2000 SD8 (arc=5 opp, H=20.8 ~234m) from ARO Westfield (Sept. 4.34-35p5)
- W9520 329520 2002 SV from ARO Westfield (Sept. 4.37-39p6)
- L4869 214869 2007 PA8 from ARO Westfield (Sept. 4.32-34p7)
- 90403 90403 2003 YE45 from SSS (Sept. 4.40-42p2)
- 29075 29075 1950 DA from SSS (Aug. 26.49-50p2 & Sept. 4.53-56p2)
- 04954 4954 Eric (1990 SQ) from SSS (Sept. 4.46p1)
Observers on 5 September '12
Ten observers appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 24 in MPEC 2012-R09 -- 2012 QY14, 2012 QX17, 2012 QJ45, 2012 QJ2, 2012 QG49, 2012 QG42, 2012 QF42, 2012 QE50, 2012 QC18, 2012 QB17, 2012 PX, 2012 PS17, 2012 PP24, 2012 PG5, 2012 PC20, 2012 OO, 2012 NP, 2012 MN2, 2012 BC20, 2006 DY, 2005 RZ2, 2000 SD8, 329520, 214869|
|I63||Cygnus Obs., 1 in MPEC 2012-R09 -- 2012 QG42|
|E102||Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-R09 -- 2012 QG42|
|5682||David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2012-R09 -- 2012 LK9, 2012 FG58|
|C23||Olmen Obs. in Belgium, 1 in MPEC 2012-R09 -- 2012 QG42|
|H45||Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2012-R09 -- 2012 QG42, 2012 QE50, 2012 PS17, 2012 PG5, 2010 OS22|
|E12||Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2012-R09 -- 2012 QJ45, 2012 QH49, 2012 QG42, 2012 QF42, 90403, 29075, 4954, 4769|
|954||Teide Obs. in the Canary Islands, 1 in MPEC 2012-R09 -- 2012 QG42|
|A92||Urseanu Obs. in Romania, 1 in MPEC 2012-R09 -- 2012 QG42|
|718||Wiggins Obs. in Utah, 2 in MPEC 2012-R09 -- 2012 QG42, 2012 QE50|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 5 September '12
Notes for Today's Latest Risk Assessments
|2012 PX||JPL Sentry||1615||2108||1||2.6e-07||-6.09||-6.09||0||JPL: "Analysis based on 183 observations spanning 27.936 days (2012-Aug-07.35157 to 2012-Sep-04.287907)." Diameter approximately 0.079 km. from mean, weighted H=23.2.|
|NEODyS||1615||R E M O V E D||-|
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 5 September '12
Times are UTC for when items were noted or added by The Tracking News.
|1618||Generated Traffic Report|
|1615||Noted that JPL Sentry has updated its 2012 PX risk assessment - see above|
Noted that NEODyS has removed 2012 PX as an impact risk - see above
Grabbed MPEC 2012-R09 - Daily Orbit Update - see above