Contents  on 3 March '13

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 3 March '13

Two objects reported inside ten LD

There are two objects reported to be within a radius of ten lunar distances (LD) from Earth today. Intruder 2013 EC enters Earth's Hill sphere, passing from 6.04 to 1.72 LD, while 2013 EB departs from inside ten LD, traveling from 8.7 to 11.7 LD*.

Coming to the neighborhood next, risk-listed radar target 2007 EO88 is calculated with some uncertainty to arrive inside ten LD on March 15th.

This report was generated at 1655 UTC with first follow-up for departed 2013 DA1 in today's DOU MPEC along with observation of departed risk-listed 2013 CL22 and distant 68216 2001 CV26.



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 3 March '13

The MPC's NEO Confirmation Page has 19 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nineteen objects listed. Of these, three were "one nighters." So far The Tracking News has counted a total of 22 listings on the NEOCP today.

New MPECs  on 3 March '13

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.


<< DOU on 3 Mar. '13 >>  MPEC 2013-E07 - "06:03 UT" - Daily Orbit Update


<< OOC on 3 Mar. '13 >> MPEC 2013-E06 - "01:00 UT" - Observations and Orbits of Comets

Observers  on 3 March '13

A total of 56 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 11 in MPEC 2013-E06 -- C/2013 D1, C/2012 Y3, C/2012 X2, P/2012 B1, C/2011 R1, 274P, 273P, 246P, 125P, 117P, 63P
Z74Amanecer de Arrakis Obs., 3 in MPEC 2013-E06 -- C/2012 S1, C/2011 J2, 63P
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2013-E06 -- C/2011 UF305
I47Auger Obs. in Argentina, 2 in MPEC 2013-E06 -- C/2013 A1, C/2011 L4
I56Beckman Obs. in Spain, 1 in MPEC 2013-E07 -- 2011 BK24
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-E07 -- 68216
C12Berta Obs. in Spain, 1 in MPEC 2013-E06 -- C/2012 S1
I32Beta Orionis Obs. in Argentina, 2 in MPEC 2013-E06 -- C/2012 S1, C/2012 F6
I99Blanquita Obs. in Spain, 1 in MPEC 2013-E06 -- C/2012 L2
726Brainerd Obs. in Minnesota, 3 in MPEC 2013-E06 -- C/2012 S1, C/2011 J2, 63P
B96Brixiis Obs. in Belgium, 7 in MPEC 2013-E06 -- P/2012 US27, C/2012 S1, C/2012 L2, C/2012 L1, C/2009 P1, 244P, 63P
I72Carpe-Noctem Obs., 3 in MPEC 2013-E06 -- C/2012 S1, C/2011 J2, 63P
703Catalina Sky Survey (CSS) in Arizona, 14 in MPECs 2013-E06 & 2013-E07 -- 2012 TJ146, 2009 AV, 99935, 68278, 68216, 267221, 22771, 214869, 198856, 154347, 153267, 7358, 280P, 78P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPEC 2013-E07 -- 2013 DZ, 2013 DM1, 2013 CR35, 2013 CL89, 2013 CK89, 2013 CK129, 2013 BD70, 2012 WP3, 2012 SG32, 2010 EH43, 2008 ED69, 2007 JF22
958Dax Obs. in France, 20 in MPEC 2013-E06 -- C/2012 V2, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, P/2012 B1, C/2012 A2, C/2011 UF305, C/2011 J2, C/2010 R1, C/2009 P1, C/2006 S3, 274P, 244P, 117P, 78P, 63P, 29P
448Desert Moon Obs. in New Mexico, 6 in MPECs 2013-E06 & 2013-E07 -- 2013 DU, C/2012 S1, 2011 SD173, 2010 GR7, 2003 XE, 152952
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-E07 -- 2013 EA
C73Galati Obs. in Romania, 9 in MPEC 2013-E06 -- C/2012 V2, C/2012 S1, C/2012 L2, C/2011 R1, C/2011 J2, C/2006 S3, 273P, 117P, 63P
372Geisei Obs. in Japan, 5 in MPEC 2013-E06 -- C/2012 K5, C/2012 J1, C/2011 UF305, C/2009 P1, 29P
D88Hiratsuka Obs. in Japan, 11 in MPEC 2013-E06 -- C/2012 X1, C/2012 V2, C/2012 S1, C/2012 L2, C/2012 L1, P/2012 B1, C/2012 A2, C/2011 UF305, C/2011 J2, 274P, 63P
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2013-E06 -- C/2012 S1
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-E06 -- C/2013 A1
B15Inastars Obs. in Germany, 1 in MPEC 2013-E07 -- 137108
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2013-E06 -- C/2013 A1
D95Kurihara Obs. in Japan, 8 in MPEC 2013-E06 -- C/2012 V2, P/2012 US27, C/2012 S1, C/2012 L2, C/2012 J1, C/2012 A2, C/2011 UF305, 272P
J38La Vara Obs. in Spain, 11 in MPEC 2013-E06 -- C/2013 A1, C/2012 X1, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 J1, C/2012 A2, C/2011 J2, C/2009 P1, 175P, 63P
J134program code 4 via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2013-E06 -- C/2012 S1
C10Maisoncelles Obs. in France, 2 in MPEC 2013-E06 -- C/2012 LP26, 29P
B67Mirasteilas Obs. in Switzerland, 3 in MPECs 2013-E06 & 2013-E07 -- 2013 CX129, C/2012 S1, 214869
213Montcabre Obs. in Spain, 4 in MPEC 2013-E06 -- C/2012 S1, P/2012 B1, C/2011 J2, 63P
C91Montevenere Obs., 1 in MPEC 2013-E06 -- 63P
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPEC 2013-E07 -- 2013 CQ35, 2008 CR118, 1999 YR14, 39796, 214869, 5836
J15Muxagata Obs., 1 in MPEC 2013-E06 -- C/2009 P1
A24New Millennium Obs. in Italy, 10 in MPEC 2013-E06 -- C/2012 X1, C/2012 S1, C/2012 L1, C/2012 K1, C/2011 UF305, C/2011 J2, 274P, 244P, 175P, 63P
0892Oleksandr V. Shulga via Nikolaev Obs. in the Ukraine, 1 in MPEC 2013-E06 -- 63P
C47Nonndorf Obs. in Austria, 1 in MPEC 2013-E07 -- 2013 EA
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2013-E06 -- C/2013 A1, C/2011 R1
H23Pear Tree Obs. in Florida, 2 in MPEC 2013-E06 -- C/2011 J2, 63P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 19 in MPECs 2013-E06 & 2013-E07 -- C/2012 X1, C/2012 V2, P/2012 US27, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, P/2012 B1, C/2012 A2, C/2011 UF305, C/2011 J2, C/2010 R1, 2009 AV, C/2006 S3, 99942, 242P, 117P, 63P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 11 in MPEC 2013-E06 -- C/2013 D1, C/2013 C2, C/2012 Y3, C/2012 K5, C/2012 K1, C/2012 F6, P/2012 B1, C/2009 F4, C/2006 S3, 262P, 29P
D03Rantiga Obs., 1 in MPEC 2013-E06 -- C/2012 S1
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2013-E07 -- 99942
233San Vito Obs. in Italy, 2 in MPEC 2013-E06 -- C/2012 S1, C/2011 UF305
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPEC 2013-E06 -- C/2012 X1, C/2011 J2
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2013-E07 -- 2013 CX129, 2004 XN50
291Spacewatch 1.8m telescope in Arizona, 17 in MPEC 2013-E07 -- 2013 DA15, 2013 DA1, 2013 CW83, 2013 CV129, 2013 CU83, 2013 CU129, 2013 CS83, 2013 CM129, 2013 CL22, 2013 CE129, 2013 BJ18, 2013 AV60, 2012 XR134, 2012 VN82, 2008 HF2, 2007 PF6, 2006 FK
A97Stammersdorf Obs. in Austria, 1 in MPEC 2013-E06 -- C/2012 S1
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2013-E06 -- 63P
I81Tarbatness Obs. in Scotland, 1 in MPEC 2013-E06 -- C/2012 S1
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2013-E06 -- C/2012 K5, C/2009 P1
G56Walnut Creek Obs. in northern California, 1 in MPEC 2013-E06 -- C/2012 S1
C42Xingming Obs. in China, 1 in MPEC 2013-E06 -- 273P
727Zeno Obs. in Oklahoma, 1 in MPEC 2013-E06 -- C/2012 S1
J08Zonalunar Obs. in Spain, 2 in MPEC 2013-E06 -- C/2012 L2, 63P
H06iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2013-E06 -- P/2012 B1, C/2011 J2, 63P
H06#M. Suzuki via iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2013-E06 -- C/2010 R1, C/2006 S3
H06Lprogram code "L" via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-E06 -- C/2012 S1
I89iTelescope Obs. Nerpio in Spain, 1 in MPEC 2013-E06 -- C/2012 S1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 March '13

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
2013 CL22JPL Sentry1652206431.2e-06-5.86-5.940JPL: "Analysis based on 73 observations spanning 25.476 days (2013-Feb-05.05792 to 2013-Mar-02.53404)." Diameter approximately 0.039 km. from mean, weighted H=24.7.

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 3 March '13

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

1655Generated Traffic Report
1652Noted that JPL Sentry has updated its 2013 CL22 risk assessment - see above
Grabbed MPEC 2013-E07 - Daily Orbit Update - see above
0138Grabbed MPEC 2013-E06 - Observations and Orbits of Comets - see above