Contents  on 5 December '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 December '12

No objects reported inside ten LD

No objects are reported moving within ten lunar distances (LD) of Earth today. Headed our way next, 2009 BS5 arrives inside ten LD on December 7th.

This report was updated at 2023 UTC with discovery of already departed 2012 XP2 (MPEC). Today's first traffic report was generated at 1709 UTC with follow-up in today's DOU MPEC for departed 2012 XC and radar target 2010 JK1 and for departed risk-listed 2012 WR10, 2012 WS3, and 2012 VV76.


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.

NEOCP Activity  on 5 December '12

The MPC's NEO Confirmation Page has 15 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fifteen objects listed. Of these, six were "one nighters." So far The Tracking News has counted a total of 23 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 December '12

Minor Planet Electronic Circulars

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


MPEC 2012-X19 - "18:48 UT" - 2012 XQ2


MPEC 2012-X18 - "18:13 UT" - 2012 XP2


MPEC 2012-X17 - "18:10 UT" - 2012 XN2


MPEC 2012-X16 - "17:44 UT" - 2009 WF106


<< DOU on 5 Dec. '12 >>  MPEC 2012-X15 - "06:02 UT" - Daily Orbit Update


MPEC 2012-X14 - "03:28 UT" - Comet C/2012 V4

Observers  on 5 December '12

A total of 39 observers appear in today's MPECs.

CodeObserver / observatory
169Airali Obs. in Italy, 1 in MPEC 2012-X15 -- 330825
J24Altamira Obs. in the Canary Islands, 1 in MPEC 2012-X14 -- C/2012 V4
E23Arcadia Obs. in New South Wales, 1 in MPEC 2012-X18 -- 2012 XP2
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2012-X15, 2012-X16, 2012-X17, 2012-X18 & 2012-X19 -- 2012 XQ2, 2012 XP2, 2012 XN2, 2009 WF106, 159533
I47Auger Obs. in Argentina, 1 in MPEC 2012-X14 -- C/2012 V4
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-X15 -- 2012 VF37
B88Bigmuskie Obs. in Italy, 1 in MPEC 2012-X15 -- 163364
300Bisei Spaceguard Center in Japan, 2 in MPECs 2012-X15 & 2012-X17 -- 2012 XN2, 2010 XL56
726Brainerd Obs. in Minnesota, 6 in MPEC 2012-X15 -- 2001 YM2, 345705, 333358, 330825, 137052, 5646
493Calar Alto Obs. in Spain, 1 in MPEC 2012-X15 -- 2008 EG
I10Campo Catino Austral Obs. in Chile, 1 in MPEC 2012-X14 -- C/2012 V4
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2012-X15, 2012-X16, 2012-X17 & 2012-X18 -- 2012 XP2, 2012 XN2, 2012 QB17, 2010 JK1, 2009 WF106, 2007 VR183, 2007 RX19, 285540, 162004, 6569, 3200
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2012-X15, 2012-X16 & 2012-X17 -- 2012 XN2, 2010 XL56, 2009 WF106
448Desert Moon Obs. in New Mexico, 5 in MPECs 2012-X15 & 2012-X17 -- 2012 XN2, 2012 WK4, 2012 VP76, 2012 VM82, 237442
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPECs 2012-X15, 2012-X16 & 2012-X17 -- 2012 XN2, 2012 VZ25, 2009 WF106
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-X16 -- 2009 WF106
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-X16 -- 2009 WF106
E108program code 8 via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-X18 -- 2012 XP2
C73Galati Obs. in Romania, 3 in MPEC 2012-X15 -- 345705, 5646, 4179
J95Great Shefford Obs. in England, 3 in MPECs 2012-X15, 2012-X16 & 2012-X17 -- 2012 XN2, 2012 FP62, 2009 WF106
W85LCOGT Cerro Tololo A in Chile, 6 in MPECs 2012-X15, 2012-X16, 2012-X17, 2012-X18 & 2012-X19 -- 2012 XQ2, 2012 XP2, 2012 XN2, 2012 TZ52, 2009 WF106, 212359
704LINEAR in New Mexico, 8 in MPEC 2012-X15 -- 99907, 329669, 285540, 162900, 5836, 5587, 4487, 3908
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-X15 -- 2012 VV76
118Modra Obs. in Slovakia, 1 in MPEC 2012-X17 -- 2012 XN2
C91Montevenere Obs., 2 in MPEC 2012-X15 -- 2000 WL63, 345705
474Mt. John Obs. in New Zealand, 1 in MPEC 2012-X15 -- 2006 WK3
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2012-X15, 2012-X16, 2012-X17, 2012-X18 & 2012-X19 -- 2012 XQ2, 2012 XP2, 2012 XN2, 2012 XC, 2012 VN82, 2010 XL56, 2009 WF106, 2009 DC43, 2005 UC, 2003 LG, 2002 PC11
E07Murrumbateman Obs. in New South Wales, 1 in MPEC 2012-X14 -- C/2012 V4
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2012-X15 -- 2003 QC10
A24New Millennium Obs. in Italy, 1 in MPEC 2012-X17 -- 2012 XN2
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2012-X15 -- 2012 US136, 2012 QF49
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-X15 -- 2012 VF37
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 2 in MPECs 2012-X14 & 2012-X18 -- 2012 XP2, C/2012 V4
H36Sandlot Obs. in Kansas, 4 in MPECs 2012-X16, 2012-X17, 2012-X18 & 2012-X19 -- 2012 XQ2, 2012 XP2, 2012 XN2, 2009 WF106
204Schiaparelli Obs. in Italy, 2 in MPECs 2012-X16 & 2012-X17 -- 2012 XN2, 2009 WF106
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2012-X14 & 2012-X15 -- C/2012 V4, 2007 CA27
J84South Obs. in England, 1 in MPEC 2012-X16 -- 2009 WF106
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2012-X15 -- 2006 WN1, 159533
291Spacewatch 1.8m telescope in Arizona, 23 in MPECs 2012-X15, 2012-X16, 2012-X17 & 2012-X19 -- 2012 XQ2, 2012 XN2, 2012 WS3, 2012 WR10, 2012 WH, 2012 WB25, 2012 VN82, 2012 VN7, 2012 VK76, 2012 VJ77, 2012 VJ6, 2012 VF37, 2012 VE82, 2012 VE46, 2012 VC5, 2012 UZ33, 2012 UW68, 2012 UR136, 2012 TP274, 2012 TP139, 2012 HF31, 2010 XL56, 2009 WF106
718Wiggins Obs. in Utah, 1 in MPEC 2012-X15 -- 2012 VF37
G28Wyncroft Obs., 1 in MPEC 2012-X15 -- 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 5 December '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 XHNEODyS17072080-208631.31e-07-7.57-7.670NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2012-12-03.179 to 2012-12-04.400."
2012 WR10JPL Sentry17072087-210548.4e-07-8.20-8.420JPL: "Analysis based on 33 observations spanning 12.190 days (2012-Nov-22.21759 to 2012-Dec-04.4075)." Diameter approximately 0.007 km. from mean, weighted H=28.5.
NEODyS17072081-209851.04e-06-8.08-8.480NEODyS: "Based on 33 optical observations (of which 1 are rejected as outliers) from 2012-11-22.218 to 2012-12-04.408."
2012 WS3JPL Sentry17072066-2112516.8e-05-4.95-5.690JPL: "Analysis based on 49 observations spanning 14.009 days (2012-Nov-20.32726 to 2012-Dec-04.33655)." Diameter approximately 0.022 km. from mean, weighted H=25.9.
NEODyS17072082-2100162.5e-06-6.32-6.980NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2012-11-20.328 to 2012-12-04.337."
2012 VV76JPL Sentry1707207412.5e-09-8.88-8.880JPL: "Analysis based on 45 observations spanning 13.180 days (2012-Nov-13.43413 to 2012-Nov-26.614374)." Diameter approximately 0.026 km. from mean, weighted H=25.6.
NEODyS17072094-209412.4e-08-8.02-8.020NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2012-11-13.435 to 2012-11-26.615."

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 December '12

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

2023Updated Traffic Report
1951Grabbed MPEC 2012-X19 - 2012 XQ2 - see above
1846Grabbed MPEC 2012-X17 - 2012 XN2 - see above
Grabbed MPEC 2012-X18 - 2012 XP2 - see above
1810Grabbed MPEC 2012-X16 - 2009 WF106 - see above
1707Noted that JPL Sentry has updated its 2012 VV76 risk assessment - see above
Noted that NEODyS has updated its 2012 VV76 risk assessment - see above
Noted that JPL Sentry has updated its 2012 WR10 risk assessment - see above
Noted that NEODyS has updated its 2012 WR10 risk assessment - see above
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
Noted that NEODyS has posted 2012 XH as an impact risk - see above
Grabbed MPEC 2012-X15 - Daily Orbit Update - see above
0608Grabbed MPEC 2012-X14 - Comet C/2012 V4 - see above