Contents  on 5 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 5 November '12

Five objects reported inside ten LD

Five asteroids are reported inside inside ten lunar distances (LD) of Earth today. Newly announced 2012 VD5 enters Earth's Hill sphere, going from 3.99 to 1.91 LD and, within Earth's Hill sphere, 2012 UX136 is headed away from 2.75 to 3.04 LD. Further out, newly announced 2012 VL5 is outbound from 5.85 to 6.59 LD and 2012 UL171 from 7.8 to 8.0 LD*, while 2012 UV136 is inbound from 7.67 to 7.09 LD.

Approaching our world next, on November 7th newly announced 2012 VB5 comes inside ten LD as does risk-listed 2012 UY68, and radar target 2010 JK1 arrives on November 22nd.

This report was updated at 2343 UTC with new discoveries 2012 VL5 (MPEC), 2012 VD5 (MPEC), and 2012 VB5 (MPEC). Today's first traffic report was generated at 1557 UTC with follow-up in today's DOU MPEC for 2012 UK171 and 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. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 5 November '12

The MPC's NEO Confirmation Page has 60 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 60 objects listed. Of these, 36 were "one nighters." So far The Tracking News has counted a total of 81 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 November '12

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been fifteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-V20 - "21:20 UT" - 2012 VL5


MPEC 2012-V19 - "21:18 UT" - 2012 VK5


MPEC 2012-V18 - "21:15 UT" - 2012 VJ5


MPEC 2012-V17 - "21:12 UT" - 2012 VH5


MPEC 2012-V16 - "21:09 UT" - 2012 VG5


MPEC 2012-V15 - "21:07 UT" - 2012 VF5


MPEC 2012-V14 - "21:04 UT" - 2012 VE5


MPEC 2012-V13 - "20:43 UT" - 2012 VD5


MPEC 2012-V12 - "18:45 UT" - 2012 VC5


MPEC 2012-V11 - "18:42 UT" - 2012 VB5


MPEC 2012-V10 - "18:40 UT" - 2012 VA5


MPEC 2012-V09 - "18:32 UT" - 2012 VZ4


MPEC 2012-V08 - "18:29 UT" - 2012 VY4


MPEC 2012-V07 - "15:10 UT" - 2012 TW78


<< DOU on 5 Nov. '12 >>  MPEC 2012-V06 - "06:03 UT" - Daily Orbit Update

Observers  on 5 November '12

A total of 27 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2012-V10, 2012-V11, 2012-V12, 2012-V13, 2012-V18, 2012-V19 & 2012-V20 -- 2012 VL5, 2012 VK5, 2012 VJ5, 2012 VD5, 2012 VC5, 2012 VB5, 2012 VA5
300Bisei Spaceguard Center in Japan, 4 in MPEC 2012-V06 -- 2012 LU7, 333889, 276397, 5587
703Catalina Sky Survey (CSS) in Arizona, 16 in MPECs 2012-V06 & 2012-V13 -- 2012 VD5, 2012 UX27, 2012 TQ78, 2012 TJ146, 2012 JR17, 2004 UB, 2004 TL19, 99907, 340048, 33342, 237442, 220839, 207970, 19356, 162900, 1685
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2012-V09, 2012-V10 & 2012-V15 -- 2012 VZ4, 2012 VF5, 2012 VA5
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2012-V06 -- 2012 UC69
448Desert Moon Obs. in New Mexico, 3 in MPEC 2012-V06 -- 2012 TQ256, 2012 PS17, 2006 WR127
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPECs 2012-V06, 2012-V12, 2012-V13 & 2012-V18 -- 2012 VJ5, 2012 VD5, 2012 VC5, 330233
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-V09 -- 2012 VZ4
C18Frasnes-Lez-Anvaing Obs. in Belgium, 1 in MPEC 2012-V06 -- 2012 QF49
J95Great Shefford Obs. in England, 5 in MPECs 2012-V08, 2012-V11, 2012-V13, 2012-V16 & 2012-V20 -- 2012 VY4, 2012 VL5, 2012 VG5, 2012 VD5, 2012 VB5
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2012-V13 -- 2012 VD5
704LINEAR in New Mexico, 10 in MPEC 2012-V06 -- 2012 LU7, 329669, 326732, 162900, 162082, 10302, 5836, 5587, 5143, 3908
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-V06 -- 2012 RU16
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2012-V06, 2012-V10, 2012-V11, 2012-V12, 2012-V18, 2012-V19 & 2012-V20 -- 2012 VL5, 2012 VK5, 2012 VJ5, 2012 VC5, 2012 VB5, 2012 VA5, 2012 UV136, 2012 UD34, 2008 XE2, 2000 JQ3, 190119, 153306, 3908
A24New Millennium Obs. in Italy, 1 in MPEC 2012-V13 -- 2012 VD5
G34Oberfrauendorf Obs., 1 in MPEC 2012-V06 -- 2012 QG42
F51Pan-STARRS 1 (PS1) in Hawaii, 20 in MPECs 2012-V06, 2012-V07, 2012-V08, 2012-V09, 2012-V14, 2012-V15, 2012-V16 & 2012-V17 -- 2012 VZ4, 2012 VY4, 2012 VH5, 2012 VG5, 2012 VF5, 2012 VE5, 2012 TX78, 2012 TW78, 2012 TT145, 2012 SZ49, 2012 RS16, 2010 HQ80, 2009 SD229, 99907, 96744, 31221, 277958, 11054, 3200, 1221
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2012-V06 -- 2012 QF49, 2008 HV4, 2005 SH19, 1998 WL4
H36Sandlot Obs. in Kansas, 2 in MPECs 2012-V12 & 2012-V16 -- 2012 VG5, 2012 VC5
204Schiaparelli Obs. in Italy, 9 in MPECs 2012-V06 & 2012-V13 -- 2012 VD5, 2012 UX27, 2012 UQ18, 2012 UP27, 2012 TX78, 2012 TT231, 2012 TQ139, 2012 PW, 2010 JT34
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2012-V06 -- 2004 UB, 96590
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2012-V06, 2012-V07, 2012-V08, 2012-V09, 2012-V11, 2012-V12, 2012-V13, 2012-V14, 2012-V16, 2012-V17 & 2012-V18 -- 2012 VZ4, 2012 VY4, 2012 VJ5, 2012 VH5, 2012 VG5, 2012 VE5, 2012 VD5, 2012 VC5, 2012 VB5, 2012 UX68, 2012 UW136, 2012 UR138, 2012 UE34, 2012 TW78, 2004 UB
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2012-V06 -- 2012 QF49
I52Steward Obs. Mt. Lemmon Station in Arizona, 2 in MPECs 2012-V12 & 2012-V18 -- 2012 VJ5, 2012 VC5
926Tenagra II Obs. in Arizona, 2 in MPEC 2012-V06 -- 2012 TM139, 12538
G33Wickede Obs., 2 in MPEC 2012-V06 -- 214869, 136993
718Wiggins Obs. in Utah, 2 in MPECs 2012-V06 & 2012-V13 -- 2012 VD5, 2012 UK171
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 5 November '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 VF5JPL Sentry2302208612.2e-10-6.58-6.580JPL: "Analysis based on 14 observations spanning 1.8295 days (2012-Nov-03.21501 to 2012-Nov-05.04453)." Diameter approximately 0.660 km. from mean, weighted H=18.6.
2012 VE5JPL Sentry23592014-21122701.1e-05-1.88-2.740JPL: "Analysis based on 10 observations spanning 1.8642 days (2012-Nov-03.212285 to 2012-Nov-05.07645)." Diameter approximately 0.349 km. from mean, weighted H=19.9.
2012 UR138NEODyS1555R E M O V E D-
2012 UE34JPL Sentry15552079-2111182.8e-07-6.11-6.350JPL: "Analysis based on 28 observations spanning 16.870 days (2012-Oct-18.393522 to 2012-Nov-04.26319)." Diameter approximately 0.080 km. from mean, weighted H=23.1.
NEODyS15552099-209911.43e-07-6.38-6.380NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2012-10-18.394 to 2012-11-04.264."
2012 RU16JPL Sentry15552077-208924.8e-07-6.85-7.050JPL: "Analysis based on 56 observations spanning 25.093 days (2012-Sep-15.34955 to 2012-Oct-10.44277)." Diameter approximately 0.026 km. from mean, weighted H=25.6.
NEODyS15552032-208931.95e-07-7.23-7.410NEODyS: "Based on 56 optical observations (of which 0 are rejected as outliers) from 2012-09-15.350 to 2012-10-10.444."

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 5 November '12

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

2359Noted that JPL Sentry has posted 2012 VE5 as an impact risk - see above
2343Updated Traffic Report
2302Noted that JPL Sentry has posted 2012 VF5 as an impact risk - see above
Grabbed MPEC 2012-V13 - 2012 VD5 - see above
Grabbed MPEC 2012-V14 - 2012 VE5 - see above
Grabbed MPEC 2012-V15 - 2012 VF5 - see above
Grabbed MPEC 2012-V16 - 2012 VG5 - see above
Grabbed MPEC 2012-V17 - 2012 VH5 - see above
Grabbed MPEC 2012-V18 - 2012 VJ5 - see above
Grabbed MPEC 2012-V19 - 2012 VK5 - see above
Grabbed MPEC 2012-V20 - 2012 VL5 - see above
1901Grabbed MPEC 2012-V08 - 2012 VY4 - see above
Grabbed MPEC 2012-V09 - 2012 VZ4 - see above
Grabbed MPEC 2012-V10 - 2012 VA5 - see above
Grabbed MPEC 2012-V11 - 2012 VB5 - see above
Grabbed MPEC 2012-V12 - 2012 VC5 - see above
1555Noted that JPL Sentry has updated its 2012 RU16 risk assessment - see above
Noted that NEODyS has updated its 2012 RU16 risk assessment - see above
Noted that JPL Sentry has updated its 2012 UE34 risk assessment - see above
Noted that NEODyS has updated its 2012 UE34 risk assessment - see above
Noted that NEODyS has removed 2012 UR138 as an impact risk - see above
Grabbed MPEC 2012-V06 - Daily Orbit Update - see above
Grabbed MPEC 2012-V07 - 2012 TW78 - see above