Contents on 9 November '12
- Traffic Report -- eleven objects
- IAU Minor Planet Center
- Observers -- ten observers
- Impact Risk Monitoring -- three objects
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 469 risk-listed objects, 30 have had news in the last 30 days. Updated at 1645 UTC on 9 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 9 November '12
Eleven objects reported inside ten LD
Eleven asteroids are reported passing within ten lunar distances (LD) of our planet today. Two of them are entering Earth's Hill sphere. 2012 VQ6 comes in from 4.66 to 2.26 LD and 2012 VC26 from 4.19 to 3.26 LD.
Out further, 2012 VB5 comes its closest to Earth on this passage, reaching 4.65 LD at 1105 UTC, as does 2012 VA26, coming to 5.12 LD at 1728 UTC. 2012 UV136 is inbound from 5.92 to 5.80 LD and risk-listed 2012 UY68 from 9.02 to 8.27 LD. And five are outbound. 2012 VE26 travels from 4.38 to 8.47 LD, 2012 UX136 from 5.61 to 6.68 LD, 2012 VD5 from 6.72 to 9.23 LD, 2012 UL171 from 9.0 to 9.5 LD*, and 2012 VL5 leaves ten LD, passing from 9.58 to 10.71 LD.
Approaching our neighborhood next, 2012 VB26 arrives inside ten LD on November 16th and radar target 2010 JK1 arrives on November 22nd.
This report was generated at 1636 UTC with follow-up in today's DOU MPEC for 2012 VQ6 and 2012 UY68 plus the recovery of departed risk-listed 2012 UU158, adding 12 days to an observing arc of less than two days.
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 9 November '12
The MPC's NEO Confirmation Page has 36 listings
When last checked at 2341 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 36 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 9 November '12
Minor Planet Electronic Circulars
As of last check at 2341 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
- K12V06Q 2012 VQ6 (small asteroid, arc=5 days, H=27.0 ~13m, close passer) from the Spacewatch 1.8m telescope (Nov. 9.20p3)
- K12UF8U 2012 UU158 (small asteroid, arc=14 days, H=26.6 ~16m, close passer) from David Tholen's team on Mauna Kea (Nov. 6.45-46p2 at R=22.7-23.0)
- K12U68Y 2012 UY68 (small asteroid, arc=18 days, H=25.0 ~34m, close passer) from Tholen team/Mauna Kea (Nov. 6.50p5)
- Observations of recently (no longer) risk-listed objects
- K12V05F 2012 VF5 (arc=5 days, H=18.7 ~616m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Nov. 8.01-02p3)
- K12UF8R 2012 UR158 (q=0.324 AU, Q=4.162 AU, arc=16 days, H=20.8 ~234m) from Tholen team/Mauna Kea (Nov. 6.65p3)
- K12T79H 2012 TH79 (arc=29 days, H=21.6 ~162m) from Holmes/CTIO (Nov. 8.12-13p4)
- K12T79F 2012 TF79 (small asteroid, arc=29 days, H=27.4 ~11m, PMD candidate) from Tholen team/Mauna Kea (Nov. 6.34-35p3)
- Observation campaigns (radar support, potential mission destinations)
- D6993 136993 1998 ST49 (radar) from New Millennium Obs. (Nov. 6.78p2, 7.76p2 & 7.80-81p2)
-- Potential mission destinations (PMD) list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of almost-small asteroids (21.7<H<=22.0)
- K05W00D 2005 WD (arc=2 opp, H=22.0 ~135m) from LINEAR (Nov. 8.22-27p4)
- Observations of other asteroidal objects
- K12V06H 2012 VH6 (arc=5 days, H=21.1 ~204m) from Holmes/CTIO (Nov. 8.15-17p5)
- K12V04Z 2012 VZ4 (arc=6 days, H=20.0 ~339m) from Holmes/CTIO (Nov. 8.10-11p3)
- K12UD6S 2012 US136 (i=52.0°, q=0.379 AU, Q=9.215 AU, arc=19 days, H=15.9 ~2.24 km) from Petit Jean Mtn. South Obs. (PJMSO) (Nov. 9.05-06p12)
- K12U09S 2012 US9 (arc=23 days, H=21.6 ~162m) from the Mt. Lemmon Survey (MLS) (Nov. 8.13-15p4)
- K12S59A 2012 SA59 (Q=4.085 AU, arc=42 days, H=18.9 ~562m) from New Millennium Obs. (Nov. 6.78-79p4, 6.84p4 & 7.77-82p8)
- K12K18K 2012 KK18 (Q=4.257 AU, arc=172 days, H=18.4 ~708m) from Piazzi Obs. (Nov. 7.91p1 & 7.96p1)
- K10X45T 2010 XT45 (arc=3 opp, H=17.5 ~1.07 km) from Pan-STARRS 1 (PS1) (Nov. 7.60-61p2)
- K05U00C 2005 UC (arc=2 opp, H=19.8 ~371m) from PS1 (Nov. 7.58-59p2)
- K05QF1X 2005 QX151 (arc=2 opp, H=20.5 ~269m) from PS1 (Nov. 7.52-53p2)
- K04U00B 2004 UB (arc=2 opp, H=20.4 ~282m) from New Millennium Obs. (Nov. 6.95-01p9, 7.91p4 & 7.96p4)
- K02TJ0R 2002 TR190 (arc=2 opp, H=19.3 ~467m) from PJMSO (Nov. 9.07p8)
- K02T68Y 2002 TY68 (arc=3 opp, H=18.8 ~589m) from New Millennium Obs. (Nov. 6.77p4, 6.83p4 & 7.76p4) and Piazzi Obs. (Nov. 7.90p1 & 7.96p1)
- X8176 338176 2002 RC118 from PS1 (Nov. 8.31-32p2)
- X3358 333358 2001 WN1 from New Millennium Obs. (Nov. 6.77p4, 6.83p4, 7.76p4 & 7.80p1) and LINEAR (Nov. 8.21-27p5)
- X1509 331509 1999 YA from Holmes/CTIO (Nov. 8.35-37p5)
- X0825 330825 2008 XE3 from New Millennium Obs. (Nov. 6.79p2, 6.84p2, 7.77p2 & 7.82p1) and LINEAR (Nov. 8.28-34p5)
- V0560 310560 2001 QL142 from Holmes/CTIO (Nov. 7.35-37p2 & 8.35-36p2)
- J2563 192563 1998 WZ6 from Holmes/CTIO (Sept. 23.38-40p5)
- G3364 163364 2002 OD20 from New Millennium Obs. (Nov. 6.96p4, 7.01p3, 7.91p4 & 7.96p4)
- G2679 162679 2000 TK1 from New Millennium Obs. (Nov. 6.77-82p8, 7.76p4 & 7.80p4)
- E1079 141079 2001 XS30 from PS1 (Nov. 7.47-49p2)
- D8925 138925 2001 AU43 from Holmes/CTIO (Nov. 8.35-36p5)
- 17188 17188 1999 WC2 from PS1 (Nov. 7.50-51p2)
- 08034 8034 Akka (1992 LR) from PS1 (Nov. 7.58-59p2)
- 05646 5646 1990 TR from New Millennium Obs. (Nov. 7.96p2 & 8.06p2)
- 02212 2212 Hephaistos (1978 SB) from PS1 (Nov. 7.48-49p2)
- 01620 1620 Geographos (1951 RA) from the Catalina Sky Survey (CSS) (Nov. 8.08-09p4)
Observers on 9 November '12
Ten observers appear in today's MPEC.
|Code||Observer / observatory|
|703||Catalina Sky Survey in Arizona, 1 in MPEC 2012-V59 -- 1620|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPEC 2012-V59 -- 2012 VZ4, 2012 VH6, 2012 VF5, 2012 TH79, 331509, 310560, 192563, 138925|
|704||LINEAR in New Mexico, 3 in MPEC 2012-V59 -- 2005 WD, 333358, 330825|
|5682||David Tholen's team on Mauna Kea in Hawaii, 4 in MPEC 2012-V59 -- 2012 UY68, 2012 UU158, 2012 UR158, 2012 TF79|
|G96||Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-V59 -- 2012 US9|
|A24||New Millennium Obs. in Italy, 9 in MPEC 2012-V59 -- 2012 SA59, 2004 UB, 2002 TY68, 333358, 330825, 163364, 162679, 136993, 5646|
|F51||Pan-STARRS 1 (PS1) in Hawaii, 8 in MPEC 2012-V59 -- 2010 XT45, 2005 UC, 2005 QX151, 338176, 17188, 141079, 8034, 2212|
|H45||Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2012-V59 -- 2012 US136, 2002 TR190|
|C63||Piazzi Obs., 2 in MPEC 2012-V59 -- 2012 KK18, 2002 TY68|
|291||Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2012-V59 -- 2012 VQ6|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 9 November '12
Notes for Today's Latest Risk Assessments
|2012 VQ6||NEODyS||1630||R E M O V E D||-|
|2012 UU158||JPL Sentry||1630||2042-2070||4||4.4e-06||-6.28||-6.38||0||JPL: "Analysis based on 11 observations spanning 13.951 days (2012-Oct-23.50549 to 2012-Nov-06.456322)." Diameter approximately 0.014 km. from mean, weighted H=26.9.|
|NEODyS||1630||2041-2078||6||3.39e-06||-6.43||-6.49||0||NEODyS: "Based on 11 optical observations (of which 1 are rejected as outliers) from 2012-10-23.506 to 2012-11-06.457."|
|2012 UY68||JPL Sentry||1630||2112||1||1.1e-10||-10.43||-10.4||0||JPL: "Analysis based on 39 observations spanning 17.932 days (2012-Oct-20.30946 to 2012-Nov-07.24123)." Diameter approximately 0.034 km. from mean, weighted H=25.0.|
|NEODyS||1630||2081-2081||1||8.55e-10||-9.38||-9.38||0||NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2012-10-20.310 to 2012-11-07.242."|
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 9 November '12
Times are UTC for when items were noted or added by The Tracking News.
|1636||Generated Traffic Report|
|1630||Noted that JPL Sentry has updated its 2012 UU158 risk assessment - see above|
Noted that NEODyS has updated its 2012 UU158 risk assessment - see above
Noted that JPL Sentry has updated its 2012 UY68 risk assessment - see above
Noted that NEODyS has updated its 2012 UY68 risk assessment - see above
Noted that NEODyS has removed 2012 VQ6 as an impact risk - see above
Grabbed MPEC 2012-V59 - Daily Orbit Update - see above