Contents on 12 November '12
- Traffic Report -- six objects
- IAU Minor Planet Center
- Observers -- eight observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 468 risk-listed objects, 30 have had news in the last 30 days. Updated at 1607 UTC on 12 Nov.
- 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 12 November '12
Six objects reported inside ten LD
Six asteroids are reported passing within ten lunar distances (LD) of our planet today. Inside Earth's Hill sphere, 2012 VC26 is headed out from 2.31 to 2.64 LD. Further away, risk-listed 2012 UY68 is inbound from 7.14 to 6.82 LD, and 2012 VQ6 is outbound from 4.75 to 7.52 LD, 2012 UV136 from 6.00 to 6.31 LD, and 2012 VA26 from 7.27 to 9.03 LD, while 2012 UX136 leaves ten LD, moving from 8.94 to 10.09 LD.
Coming toward Earth next, 2012 VB26 arrives inside ten LD on November 16th and radar target 2010 JK1 arrives on November 22nd.
This report was generated at 1609 UTC with follow-up in today's DOU MPEC for 2012 UV136.
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 12 November '12
The MPC's NEO Confirmation Page has 34 listings
When last checked at 2108 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 34 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 35 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 November '12
Minor Planet Electronic Circulars
As of last check at 2108 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
- K12UF8R 2012 UR158 (q=0.324 AU, Q=4.162 AU, arc=16 days, H=20.8 ~234m) from Astronomical Research Obs. Westfield (Nov. 1.38-39p4)
- Observations of close-passing objects
- K12UD6V 2012 UV136 (arc=16 days, H=25.6 ~26m, PMD candidate) from ARO Westfield (Nov. 2.38-39p3)
- Observations of small asteroids (H>22.0)
- K12V04Y 2012 VY4 (Q=4.524 AU, arc=11 days, H=22.3 ~117m) from Sandlot Obs. (Nov. 12.08-10p3)
- Observations of other asteroidal objects
- K12UD6S 2012 US136 (i=52.0°, q=0.379 AU, Q=9.111 AU, arc=22 days, H=15.9 ~2.24 km) from Tesla Obs. (Nov. 11.85-87p4)
- K12TR4P 2012 TP274 (arc=28 days, H=20.0 ~339m) from ARO Westfield (Nov. 9.07-08p2) and the Spacewatch 1.8m telescope (Nov. 12.16-17p3)
- K12TL9A 2012 TA219 (Q=4.123 AU, arc=34 days, H=18.0 ~851m) from Bisei Spaceguard Center (Nov. 11.74p3)
- K12T79Y 2012 TY79 (arc=33 days, H=20.1 ~323m) from ARO Westfield (Nov. 1.23-24p2)
- K12O00O 2012 OO (arc=118 days, H=20.6 ~257m) from Pan-STARRS 1 (PS1) (Nov. 11.50-51p2)
- K12H01J 2012 HJ1 (arc=2 opp, H=17.9 ~891m) from Tesla Obs. (Nov. 11.97-98p2)
- K08X02E 2008 XE2 (arc=2 opp, H=19.2 ~490m) from Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) (Nov. 12.10-11p4)
- K08H04V 2008 HV4 (arc=2 opp, H=19.7 ~389m) from DGRO-RH (Nov. 12.12p3)
- W9338 329338 2001 JW2 from DGRO-RH (Nov. 12.06p11)
- 03360 3360 Syrinx (1981 VA) from New Millennium Obs. (Nov. 7.96p2 & 8.06p1)
Observers on 12 November '12
Eight observers appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2012-V71 -- 2012 UV136, 2012 UR158, 2012 TY79, 2012 TP274|
|300||Bisei Spaceguard Center in Japan, 1 in MPEC 2012-V71 -- 2012 TA219|
|G48||Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPEC 2012-V71 -- 2008 XE2, 2008 HV4, 329338|
|A24||New Millennium Obs. in Italy, 1 in MPEC 2012-V71 -- 3360|
|F51||Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-V71 -- 2012 OO|
|H36||Sandlot Obs. in Kansas, 1 in MPEC 2012-V71 -- 2012 VY4|
|291||Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2012-V71 -- 2012 TP274|
|I76||Tesla Obs. in Spain, 2 in MPEC 2012-V71 -- 2012 US136, 2012 HJ1|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 12 November '12
Notes for Today's Latest Risk Assessments
|2009 VZ39||JPL Sentry||0405||2012-2110||790||7.0e-06||-6.14||-6.90||0||JPL: "Analysis based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546)." Diameter approximately 0.009 km. from mean, weighted H=27.9.|
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.