Contents  on 18 November '12

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

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 18 November '12

Ten objects reported inside ten LD

Ten asteroids are reported inside ten lunar distances (LD) of Earth today. Risk-listed 2012 VE77 comes its closest to Earth this time around, reaching 4.50 LD at 0016 UTC. 2012 VN76 is inbound from 8.0 to 7.5 LD*. And all the others are outbound: Risk-listed intruder 2012 VJ38 from 4.10 to 5.12 LD, risk-listed 2012 VS76 from 4.18 to 6.43 LD, 2012 VC26 from 7.59 to 8.74 LD, risk-listed 2012 VU76 from 8.23 to 8.53 LD, 2012 UY68 from 8.24 to 9.00 LD, and 2012 UV136 from 9.24 to 9.99 LD, while newly announced 2012 WF leaves ten LD, passing from 8.87 to 10.79 LD, as does 2012 VB26, traveling from 9.8 to 10.6 LD*.

On approach next, radar target 2010 JK1 arrives inside ten LD on November 22nd.

This report was updated at 1848 UTC to note the first follow-up for departed intruder 2012 VH77 in today's DOU MPEC along with expansion of departed 2012 VB20's observation arc from 1.937 to 5.877 days and follow-up for risk-listed 2012 VU76 and three departed objects: risk-listed 2012 VV76 plus 2012 VR76 and 2012 VB37. Today's first traffic report was posted at 0448 UTC with new discovery 2012 WF (MPEC).


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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 18 November '12

The MPC's NEO Confirmation Page has 5 listings

When last checked at 2305 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five objects listed. Of these, one was a "one nighter." So far The Tracking News has counted a total of eleven 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 18 November '12

Minor Planet Electronic Circulars

As of last check at 2305 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-W18 - "23:02 UT" - 1998 VE31


<< DOU on 18 Nov. '12 >>  MPEC 2012-W17 - "06:06 UT" - Daily Orbit Update


MPEC 2012-W16 - "02:28 UT" - 2012 VN82


MPEC 2012-W15 - "01:16 UT" - 2012 WH


MPEC 2012-W14 - "01:14 UT" - 2012 WG


MPEC 2012-W13 - "01:11 UT" - 2012 WF


MPEC 2012-W12 - "01:02 UT" - 2012 WE

Observers  on 18 November '12

A total of 31 observers appear in today's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 5 in MPEC 2012-W17 -- 99907, 333358, 330825, 276397, 5646
H21Astronomical Research Obs. Westfield in Illinois, 34 in MPECs 2012-W13, 2012-W14, 2012-W16, 2012-W17 & 2012-W18 -- 2012 WG, 2012 WF, 2012 VZ25, 2012 VV76, 2012 VU76, 2012 VO76, 2012 VO7, 2012 VN82, 2012 VK76, 2012 VJ77, 2012 VJ46, 2012 VH77, 2012 VH46, 2012 VG6, 2012 VF46, 2012 VF37, 2012 VD77, 2012 VC5, 2012 VB37, 2012 VA5, 2012 US9, 2012 US169, 2012 US136, 2012 UQ138, 2012 TS5, 2012 TP274, 2012 TG146, 2012 TD146, 2012 SW20, 2012 SL8, 2003 MU, 2002 DU3, 1998 VE31, 1998 HJ3
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-W18 -- 1998 VE31
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-W18 -- 1998 VE31
726Brainerd Obs. in Minnesota, 1 in MPEC 2012-W17 -- 330825
703Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2012-W13 & 2012-W17 -- 2012 WF, 2012 TA219, 326291, 144411, 4947, 3200
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPEC 2012-W17 -- 2012 UW27, 2012 UB34, 2012 TZ52, 2012 TS, 2012 PQ28, 333908, 331509, 313809, 310560, 280136, 217430
639Dresden Obs. in Germany, 2 in MPEC 2012-W17 -- 2012 US136, 6455
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2012-W16 & 2012-W17 -- 2012 VP6, 2012 VN82, 2012 VB20
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2012-W18 -- 1998 VE31
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-W13 -- 2012 WF
J95Great Shefford Obs. in England, 8 in MPECs 2012-W12, 2012-W13, 2012-W14, 2012-W15, 2012-W16, 2012-W17 & 2012-W18 -- 2012 WH, 2012 WG, 2012 WF, 2012 WE, 2012 VU76, 2012 VN82, 2012 VG77, 1998 VE31
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2012-W13 -- 2012 WF
246KLENOT in the Czech Republic, 4 in MPECs 2012-W13, 2012-W14 & 2012-W17 -- 2012 WG, 2012 WF, 2012 VZ25, 2012 VF46
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 8 in MPEC 2012-W17 -- 2012 VJ46, 2012 VG26, 2012 UQ18, 2012 UD34, 2012 TD146, 2012 ME7, 2006 JT, 2006 CX10
046Klet Obs. in the Czech Republic, 11 in MPEC 2012-W17 -- 2012 VZ25, 2012 US136, 2012 TJ146, 2012 TA79, 2012 TA219, 2012 SA59, 2012 QB17, 2012 JR17, 2008 HV4, 162679, 138852
704LINEAR in New Mexico, 7 in MPECs 2012-W17 & 2012-W18 -- 2012 RX16, 2012 JR17, 2003 UC20, 2000 WL63, 1998 VE31, 237442, 162004
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 12 in MPEC 2012-W17 -- 2012 VS6, 2012 VP6, 2012 VK5, 2012 VJ5, 2012 VG5, 2012 VD6, 2012 VD26, 2012 UV27, 2012 TN139, 6239, 3753, 3551
809|EURONEAR via La Silla in Chile, 1 in MPEC 2012-W17 -- 5863
C41MASTER-II Obs. Kislovodsk in Russia, 1 in MPEC 2012-W17 -- 237442
B28Mandi Obs. in Italy, 1 in MPEC 2012-W13 -- 2012 WF
474Mt. John Obs. in New Zealand, 1 in MPEC 2012-W18 -- 1998 VE31
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2012-W14, 2012-W15, 2012-W16 & 2012-W17 -- 2012 WH, 2012 WG, 2012 VN82, 2011 KD11, 2010 HQ80, 2006 WN1, 2004 XH29, 2003 UC5, 2003 SL215, 153306
J93Mt. Tuffley Obs. in England, 3 in MPEC 2012-W17 -- 99907, 5646, 3360
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-W12 -- 2012 WE
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2012-W17 -- 2012 VZ25, 2012 VF37, 2012 VE37, 2012 US136, 2012 SA59, 2012 QF49, 2012 JR17, 2002 TR190
473Remanzacco Obs. in Italy, 1 in MPEC 2012-W17 -- 2012 VJ82
H36Sandlot Obs. in Kansas, 6 in MPECs 2012-W12, 2012-W17 & 2012-W18 -- 2012 WE, 2012 VR76, 2012 VK77, 2012 VJ46, 2012 UD34, 1998 VE31
204Schiaparelli Obs. in Italy, 12 in MPEC 2012-W17 -- 2012 VV76, 2012 VP76, 2012 VO76, 2012 VJ82, 2012 VJ77, 2012 VF46, 2012 VF37, 2012 VE46, 2012 VD77, 2012 TA219, 2011 KD11, 2001 YM2
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2012-W17 -- 2006 WN1, 2003 SL215, 141079, 8034
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2012-W12, 2012-W13, 2012-W14, 2012-W16 & 2012-W17 -- 2012 WG, 2012 WF, 2012 WE, 2012 VY4, 2012 VN82, 2012 VK5, 2012 VJ6, 2012 VF37, 2012 UR136, 2012 UD34
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 November '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2305 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON2 risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2012 VV76JPL Sentry17152074-209431.5e-07-7.18-7.480JPL: "Analysis based on 27 observations spanning 3.9441 days (2012-Nov-13.43413 to 2012-Nov-17.378278)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
NEODyS17152086-209431.7e-07-7.14-7.470NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2012-11-13.435 to 2012-11-17.379."
2012 VU76JPL Sentry17152090-210921.1e-05-5.77-5.780JPL: "Analysis based on 36 observations spanning 4.7527 days (2012-Nov-13.43639 to 2012-Nov-18.18904)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
NEODyS17152092-210027.98e-09-8.83-9.10NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2012-11-13.437 to 2012-11-18.190."
2012 VO76JPL Sentry17152064-207836.1e-08-5.19-5.190JPL: "Analysis based on 37 observations spanning 4.0424 days (2012-Nov-13.23964 to 2012-Nov-17.282003)." Diameter approximately 0.220 km. from mean, weighted H=21.0.
NEODyS17152078-207817.02e-09-6.12-6.120NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2012-11-13.240 to 2012-11-17.283."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

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 18 November '12

Times are UTC for when items were noted or added by The Tracking News.

2305Grabbed MPEC 2012-W18 - 1998 VE31 - see above
1848Updated Traffic Report
1715Noted that JPL Sentry has updated its 2012 VO76 risk assessment - see above
Noted that NEODyS has updated its 2012 VO76 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VU76 risk assessment - see above
Noted that NEODyS has updated its 2012 VU76 risk assessment - see above
Noted that JPL Sentry has updated its 2012 VV76 risk assessment - see above
Noted that NEODyS has updated its 2012 VV76 risk assessment - see above
Grabbed MPEC 2012-W17 - Daily Orbit Update - see above
0246Grabbed MPEC 2012-W16 - 2012 VN82 - see above
0158Grabbed MPEC 2012-W12 - 2012 WE - see above
Grabbed MPEC 2012-W13 - 2012 WF - see above
Grabbed MPEC 2012-W14 - 2012 WG - see above
Grabbed MPEC 2012-W15 - 2012 WH - see above