Contents on 28 November '12
- Traffic Report -- three objects
- Radar Astrometry -- one object
- IAU Minor Planet Center
- Observers -- fifteen observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 472 risk-listed objects, 30 have had news in the last 30 days. Updated at 1656 UTC on 28 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 28 November '12
Three objects reported inside ten LD
There are three asteroids reported moving within ten lunar distances (LD) of our planet today. 2012 WH1 is inbound from 8.04 to 7.66 LD, risk-listed 2012 WR10 is outbound from 7.90 to 8.57 LD, and radar target 2010 JK1 exits ten LD, traveling from 9.67 to 10.09 LD.
Approaching next, 2009 BS5 arrives inside ten LD on December 7th.
This report was generated at 1658 UTC with follow-up in today's DOU MPEC for departed risk-listed 2012 WS3.
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.
Radar Astrometry on 28 November '12
Radar observation of one object
Data update noted at 2359 UTC when the database was dated 28 Nov.
- 2009 LS from Arecibo (Nov. 24.58 velocity)
NEOCP Activity on 28 November '12
The MPC's NEO Confirmation Page has 7 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of nine listings on the NEOCP today.
New MPECs on 28 November '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-W55 time-stamped "06:05 UT" - Daily Orbit Update - see below
- MPEC 2012-W56 time-stamped "18:12 UT" - 2012 WG32
MPEC 2012-W56 - "18:12 UT" - 2012 WG32
- K12W32G 2012 WG32 (H=17.8 ~933m) from Pan-STARRS 1 (PS1) (Nov. 24.63-65p7), the Spacewatch 1.8m telescope (Nov. 25.37-38p3), Sandlot Obs. (Nov. 25.45-49p3), McDonald Obs. (Nov. 25.49-52p9), Astronomical Research Obs. Westfield (Nov. 26.44-46p3 & 28.41-43p3), and the Mt. Lemmon Survey (MLS) (Nov. 27.40-41p4)
- Observations of risk-listed objects
- K12W03S 2012 WS3 (small asteroid, arc=6 days, H=25.9 ~22m, close passer) from David Tholen's team on Mauna Kea (Nov. 26.53p1)
- Observation campaigns (radar support, potential mission destinations)
- D6635 136635 1994 VA1 (PMD) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Nov. 27.34-36p5)
-- Potential mission destinations list & ephemerides + NHATS
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K12V05C 2012 VC5 (Q=4.581 AU, arc=20 days, H=23.8 ~59m) from Holmes/CTIO (Nov. 12.35-36p5)
- K05W00D 2005 WD (arc=2 opp, H=21.9 ~141m) from Holmes/CTIO (Nov. 27.24-26p5)
- Observations of other asteroidal objects
- K12W04L 2012 WL4 (arc=8 days, H=19.8 ~371m) from Holmes/CTIO (Nov. 27.21-22p5)
- K12W03P 2012 WP3 (arc=10 days, H=17.5 ~1.07 km) from Holmes/CTIO (Nov. 27.26-27p3) and Kevin Hills via RAS Obs. Moorook (Nov. 27.71-72p3)
- K12T53F 2012 TF53 (arc=50 days, H=21.2 ~195m) from Holmes/CTIO (Nov. 27.06-07p3)
- K12S22A 2012 SA22 (arc=70 days, H=18.0 ~851m) from Holmes/CTIO (Nov. 27.28-29p5)
- K12S09T 2012 ST9 (arc=2 opp, H=19.7 ~389m) from Holmes/CTIO (Nov. 27.02-03p3)
- K12Q50E 2012 QE50 (arc=91 days, H=18.9 ~562m) from Holmes/CTIO (Nov. 27.31-32p4)
- K12Q42F 2012 QF42 (arc=93 days, H=21.6 ~162m) from Holmes/CTIO (Nov. 26.22p2 & 27.28-29p4)
- K12Q10P 2012 QP10 (arc=2 opp, H=19.4 ~446m) from Holmes/CTIO (Nov. 27.17-18p5)
- K12H31G 2012 HG31 (arc=226 days, H=18.9 ~562m) from Holmes/CTIO (Nov. 27.08p2)
- K04X14N 2004 XN14 (arc=4 opp, H=19.8 ~371m) from LCOGT Cerro Tololo C (Nov. 18.29-37p11 & 27.31-33p17) and Holmes/CTIO (Nov. 27.13p4)
- K04K17K 2004 KK17 (i=41.6°, arc=5 opp, H=18.4 ~708m) from Holmes/CTIO (Nov. 27.09-10p5)
- K00R53D 2000 RD53 (arc=4 opp, H=19.9 ~355m) from Holmes/CTIO (Nov. 26.27-28p5 & 27.33-35p5)
- K00A06D 2000 AD6 (arc=5 opp, H=18.4 ~708m) from Holmes/CTIO (Nov. 27.11-12p5)
- X1963 331963 2004 XK35 from Desert Moon Obs. (Nov. 27.04-07p3)
- V3809 313809 2004 BH41 from Holmes/CTIO (Nov. 27.28-29p2)
- S5540 285540 2000 GU127 from Desert Moon Obs. (Nov. 27.18-20p5)
- N7442 237442 1999 TA10 from Desert Moon Obs. (Nov. 27.21-23p3)
- N2368 232368 2003 AZ2 from Holmes/CTIO (Nov. 27.25-26p5)
- M9672 229672 2006 WR1 from Holmes/CTIO (Nov. 27.34-35p5)
- L4869 214869 2007 PA8 from Odessa-Mayaki Obs. (Nov. 16.10-12p15)
- K3471 203471 2002 AU4 from Holmes/CTIO (Nov. 27.29-30p5)
- J9145 199145 2005 YY128 from MLS (Nov. 27.17-20p4)
- J2563 192563 1998 WZ6 from Holmes/CTIO (Oct. 21.36-38p4)
- H3561 173561 2000 YV137 from Holmes/CTIO (Nov. 27.19-20p5)
- G2825 162825 2001 BO61 from Holmes/CTIO (Nov. 27.34-35p4)
- G2679 162679 2000 TK1 from Lohrmann Obs. (Nov. 13.73-74p3 & 13.83-84p5)
- F9635 159635 2002 CZ46 from Holmes/CTIO (Nov. 27.27-28p4)
- D6773 136773 1996 TR6 from Desert Moon Obs. (Nov. 27.26-30p3)
- 88959 88959 2001 TZ44 from Holmes/CTIO (Nov. 27.15-16p3)
- 87684 87684 2000 SY2 from Cordoba Obs. (Nov. 28.03-05p3)
- 68548 68548 2001 XR31 from Desert Moon Obs. (Nov. 27.49-50p3)
Observers on 28 November '12
Fifteen observers appear in today's MPECs.
|Code||Observer / observatory|
|251||Arecibo in Puerto Rico, 1 in radar -- 2009 LS|
|H21||Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2012-W56 -- 2012 WG32|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 25 in MPEC 2012-W55 -- 2012 WP3, 2012 WL4, 2012 VC5, 2012 TF53, 2012 ST9, 2012 SA22, 2012 QP10, 2012 QF42, 2012 QE50, 2012 HG31, 2005 WD, 2004 XN14, 2004 KK17, 2000 RD53, 2000 AD6, 88959, 313809, 232368, 229672, 203471, 192563, 173561, 162825, 159635, 136635|
|822||Cordoba Obs. in Argentina, 1 in MPEC 2012-W55 -- 87684|
|448||Desert Moon Obs. in New Mexico, 5 in MPEC 2012-W55 -- 68548, 331963, 285540, 237442, 136773|
|W87||LCOGT Cerro Tololo C in Chile, 1 in MPEC 2012-W55 -- 2004 XN14|
|C01||Lohrmann Obs. in Germany, 1 in MPEC 2012-W55 -- 162679|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-W55 -- 2012 WS3|
|711||McDonald Obs. in Texas, 1 in MPEC 2012-W56 -- 2012 WG32|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2012-W55 & 2012-W56 -- 2012 WG32, 199145|
|583||Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2012-W55 -- 214869|
|F51||Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-W56 -- 2012 WG32|
|D90`||Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-W55 -- 2012 WP3|
|H36||Sandlot Obs. in Kansas, 1 in MPEC 2012-W56 -- 2012 WG32|
|291||Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2012-W56 -- 2012 WG32|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 28 November '12
Notes for Today's Latest Risk Assessments
|2012 WS3||JPL Sentry||1655||2065-2080||6||1.1e-06||-6.58||-6.68||0||JPL: "Analysis based on 46 observations spanning 6.2061 days (2012-Nov-20.32726 to 2012-Nov-26.533341)." Diameter approximately 0.022 km. from mean, weighted H=25.9.|
|NEODyS||1655||2082-2100||16||2.33e-06||-6.36||-6.96||0||NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2012-11-20.328 to 2012-11-26.534."|
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 28 November '12
Times are UTC for when items were noted or added by The Tracking News.
|2359||Noted Radar Astrometry database update - see above|
|2004||Grabbed MPEC 2012-W56 - 2012 WG32 - see above|
|1658||Generated Traffic Report|
|1655||Noted that JPL Sentry has updated its 2012 WS3 risk assessment - see above|
Noted that NEODyS has updated its 2012 WS3 risk assessment - see above
Grabbed MPEC 2012-W55 - Daily Orbit Update - see above