Contents  on 9 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 9 March '13

Three objects reported inside ten LD

Three visitors are reported traveling within ten lunar distances (LD) of our home world today. Intruder 2013 EC20 (a radar target and candidate potential mission destination) continues to float through the Earth-Moon system, passing Earth at 0.39 LD at 0240 UT. Within Earth's Hill sphere, 2013 EN20 is inbound from 2.9 to 1.5 LD* and radar target 2013 ET comes its closest to Earth on this passage, reaching 2.54 LD at 1208 UT.

Coming to the neighborhood next, risk-listed 2013 ES11 arrives inside ten LD on March 19th and risk-listed radar target 2007 EO88 arrives on March 15th.

This report was updated at 2255 UTC with a new discovery, departed risk-listed 2013 EV27 (MPEC), which passed Earth at 3.04 LD on February 28th. Today's first traffic report was generated at 1615 UTC with follow-up in today's DOU MPEC for 2013 EC20 and 2013 ET as well as observation of distant 68216 2001 CV26 and 136617 1994 CC.



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 March '13

The MPC's NEO Confirmation Page has 12 listings

When last checked at 2319 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had twelve objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 40 listings on the NEOCP today.

New MPECs  on 9 March '13

Minor Planet Electronic Circulars

As of last check at 2319 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-E42 - "22:58 UT" - 2013 ED28


MPEC 2013-E41 - "22:54 UT" - 2013 EC28


<< OOC on 9 Mar. '13 >> MPEC 2013-E40 - "22:21 UT" - Observations and Orbits of Comets


MPEC 2013-E39 - "20:15 UT" - 2013 EY27


MPEC 2013-E38 - "20:10 UT" - 2013 EW27


MPEC 2013-E37 - "20:05 UT" - 2013 EV27


<< DOU on 9 Mar. '13 >>  MPEC 2013-E36 - "06:05 UT" - Daily Orbit Update

Observers  on 9 March '13

A total of 80 observers appear in today's MPECs.

CodeObserver / observatory
119Abastumani Obs. in Georgia, 1 in MPEC 2013-E36 -- 2013 EC20
C60Argelander Institute for Astronomy Obs. (AIfA Obs.) in Germany, 2 in MPEC 2013-E40 -- C/2012 S1, C/2012 L2
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2013-E36, 2013-E39, 2013-E41 & 2013-E42 -- 2013 EY27, 2013 EM20, 2013 ED28, 2013 EC28, 2012 YQ3, 2006 WA, 2002 GS
I47Auger Obs. in Argentina, 1 in MPEC 2013-E40 -- C/2013 A1
C34Baja Obs. in Hungary, 5 in MPEC 2013-E40 -- C/2012 S1, C/2011 J2, C/2009 P1, 273P, 63P
565Bassano Bresciano Obs. in Italy, 1 in MPEC 2013-E40 -- C/2012 S1
K31Bellino Obs., 2 in MPEC 2013-E40 -- C/2011 UF305, C/2009 P1
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-E40 -- C/2012 S1
I32Beta Orionis Obs. in Argentina, 2 in MPEC 2013-E40 -- C/2012 S1, C/2012 F6
C86Blanes Obs. in Spain, 3 in MPEC 2013-E40 -- C/2012 V2, C/2012 S1, C/2012 L2
B96Brixiis Obs. in Belgium, 11 in MPEC 2013-E40 -- C/2012 X1, C/2012 S1, C/2012 L2, P/2012 B1, C/2012 A1, C/2011 UF305, C/2011 J2, C/2010 R1, 260P, 78P, 63P
215Buchloe Obs. in Germany, 4 in MPEC 2013-E40 -- C/2013 A1, P/2012 US27, C/2012 J1, 242P
235CAST Obs. in Italy, 6 in MPEC 2013-E40 -- C/2012 V2, C/2012 S1, C/2012 L2, C/2012 L1, C/2009 P1, 63P
493Calar Alto Obs. in Spain, 3 in MPECs 2013-E38, 2013-E41 & 2013-E42 -- 2013 EW27, 2013 ED28, 2013 EC28
B53Casal Lumbroso Obs. in Italy, 1 in MPEC 2013-E40 -- C/2012 S1
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2013-E36, 2013-E38, 2013-E40 & 2013-E41 -- 2013 EW27, 2013 EC28, 2013 EC20, 2012 XF112, C/2012 X1, C/2010 R1, 274P, 185P
470Ceccano Obs. in Italy, 1 in MPEC 2013-E40 -- C/2012 S1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPECs 2013-E37 & 2013-E39 -- 2013 EY27, 2013 EV27
970Chelmsford Obs. in England, 3 in MPEC 2013-E40 -- C/2012 S1, C/2012 L2, 274P
J01Cielo Profundo Obs. in Spain, 7 in MPEC 2013-E40 -- C/2011 R1, C/2011 J2, C/2010 R1, C/2009 P1, C/2006 S3, 273P, 63P
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2013-E40 -- C/2012 S1
B50Corner Obs. in Germany, 2 in MPEC 2013-E40 -- C/2012 S1, C/2012 L2
958Dax Obs. in France, 24 in MPEC 2013-E40 -- C/2012 Y1, C/2012 X1, 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, 273P, 262P, 244P, 175P, 117P, 78P, 63P
113Drebach Obs. in Germany, 2 in MPEC 2013-E40 -- C/2012 S1, 63P
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-E40 -- C/2012 S1
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-E36 -- 2013 EC20
F658David Tholen's team in Hawaii via Faulkes Telescope North in Hawaii, 2 in MPEC 2013-E36 -- 2013 ER4, 99942
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 1 in MPEC 2013-E40 -- C/2013 A1
C73Galati Obs. in Romania, 2 in MPEC 2013-E40 -- C/2011 R1, C/2006 S3
372Geisei Obs. in Japan, 2 in MPEC 2013-E40 -- C/2013 D1, 273P
511Haute Provence Obs. in Germany, 5 in MPEC 2013-E40 -- P/2013 CE31, C/2012 Y1, C/2011 UF305, C/2011 J2, 63P
D88Hiratsuka Obs. in Japan, 3 in MPEC 2013-E40 -- C/2009 P1, 244P, 175P
C43Hoyerswerda Obs. in Germany, 3 in MPEC 2013-E40 -- C/2011 UF305, C/2011 J2, C/2009 P1
987Isle of Man Obs. on the Isle of Man, 3 in MPEC 2013-E40 -- C/2012 V2, C/2012 S1, C/2012 L2
585Kiev Comet Station in the Ukraine, 19 in MPEC 2013-E40 -- C/2012 X1, C/2012 V2, C/2012 S1, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, P/2012 B1, C/2012 A2, C/2011 UF305, C/2011 R1, C/2011 J2, 274P, 273P, 244P, 242P, 175P, 117P, 63P
695{Tomas Vorobjov in England via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2013-E40 -- C/2013 A1
168Kourovskaya Obs. in Russia, 3 in MPEC 2013-E36 -- 85990, 356394, 5828
D95Kurihara Obs. in Japan, 8 in MPEC 2013-E40 -- C/2012 V2, P/2012 US27, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2012 A2, 262P
J38La Vara Obs. in Spain, 8 in MPEC 2013-E40 -- C/2012 X1, C/2012 S1, C/2012 L2, C/2011 J2, C/2010 R1, 175P, 63P, 29P
303Llano del Hato Obs. in Venezuela, 4 in MPEC 2013-E36 -- 99942, 68216, 3752, 1685
C41MASTER-II Obs. Kislovodsk in Russia, 1 in MPEC 2013-E36 -- 40267
C10Maisoncelles Obs. in France, 11 in MPEC 2013-E40 -- P/2013 CE31, C/2012 S1, C/2012 K1, P/2012 B1, C/2011 J2, C/2010 S1, 280P, 274P, 273P, 63P, 10P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-E37 -- 2013 EV27
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2013-E38 & 2013-E39 -- 2013 EY27, 2013 EW27
213Montcabre Obs. in Spain, 6 in MPEC 2013-E40 -- C/2012 X1, C/2012 S1, C/2011 J2, C/2010 S1, C/2009 P1, 63P
945Monte Deva Obs. in Spain, 4 in MPEC 2013-E40 -- C/2012 S1, C/2012 L2, C/2011 J2, 63P
C91Montevenere Obs., 3 in MPEC 2013-E40 -- C/2012 S1, C/2011 J2, 63P
900Moriyama Obs. in Japan, 4 in MPEC 2013-E40 -- C/2012 S1, P/2012 B1, C/2011 J2, C/2010 R1
474Mt. John Obs. in New Zealand, 2 in MPEC 2013-E36 -- 2013 ET, 2013 ES
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2013-E36, 2013-E41 & 2013-E42 -- 2013 ED28, 2013 EC28, 2000 BE19
E07Murrumbateman Obs. in New South Wales, 9 in MPEC 2013-E40 -- C/2013 D1, C/2013 C2, C/2012 Y3, C/2012 F6, C/2009 P1, C/2009 F4, 242P, 185P, 21P
C82Nastro Verde Obs., 1 in MPEC 2013-E40 -- C/2012 S1
C47Nonndorf Obs. in Austria, 12 in MPEC 2013-E40 -- C/2012 X1, C/2012 V2, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K1, P/2012 B1, C/2011 J2, 244P, 175P, 78P, 63P
C23Olmen Obs. in Belgium, 23 in MPEC 2013-E40 -- C/2012 X1, 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 J2, C/2010 S1, C/2010 R1, C/2009 P1, C/2006 S3, 274P, 273P, 262P, 244P, 175P, 78P, 63P, 29P
F51Pan-STARRS 1 (PS1) in Hawaii, 21 in MPECs 2013-E36, 2013-E37, 2013-E38, 2013-E39 & 2013-E40 -- 2013 EY27, 2013 EW27, 2013 EV27, 2013 CX129, 2013 AM60, C/2012 F3, 2009 UM3, 2007 EH88, 2004 SZ19, 52387, 354127, 263976, 137175, 136617, 8567, 7480, 5693, 2329, 276P, 223P, 78P
H23Pear Tree Obs. in Florida, 1 in MPEC 2013-E40 -- C/2012 S1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 24 in MPECs 2013-E36 & 2013-E40 -- 2013 ET, 2013 EC20, 2013 EA, C/2013 A1, C/2012 X1, C/2012 V2, P/2012 US27, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2012 A2, C/2012 A1, C/2011 UF305, C/2011 J2, C/2009 P1, 2009 BL2, 2009 AV, 99942, 274P, 242P, 175P, 63P
D29Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2013-E40 -- C/2012 F3, P/2012 B1
071Rhozen Obs. in Bulgaria, 5 in MPEC 2013-E40 -- C/2012 L2, C/2012 J1, C/2012 A2, C/2011 UF305, C/2010 S1
461SZTE Asteroid Program in Hungary, 7 in MPEC 2013-E40 -- C/2012 X1, C/2012 V2, C/2012 S1, C/2012 L2, C/2012 L1, C/2011 UF305, C/2011 J2
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2013-E40 -- C/2012 S1
H36Sandlot Obs. in Kansas, 3 in MPECs 2013-E36, 2013-E38 & 2013-E41 -- 2013 EW27, 2013 EC28, 2011 EW16
B70Sant Celoni Obs. in Spain, 1 in MPEC 2013-E40 -- C/2011 J2
033Schwarzschild Obs. in Germany, 1 in MPEC 2013-E38 -- 2013 EW27
E12Siding Spring Survey in New South Wales, 1 in MPEC 2013-E40 -- C/2013 A1
510Siegen Obs. in Germany, 3 in MPEC 2013-E40 -- C/2012 S1, C/2012 L2, C/2012 L1
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2013-E38 & 2013-E40 -- 2013 EW27, P/2013 A2, C/2012 S1, 274P, 270P, 48P
Z86St. Mellons Obs., 1 in MPEC 2013-E40 -- C/2012 S1
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2013-E38 & 2013-E41 -- 2013 EW27, 2013 EC28
C36Starry Wanderer Obs. in Belarus, 6 in MPEC 2013-E40 -- C/2012 S1, C/2012 K1, C/2011 UF305, C/2010 S1, 273P, 63P
A71Stixendorf Obs. in Austria, 6 in MPEC 2013-E40 -- C/2012 V2, C/2012 L2, C/2012 L1, 274P, 175P, 63P
147Suno Obs. in Italy, 1 in MPEC 2013-E40 -- C/2012 S1
C35Terrassa Obs., 3 in MPEC 2013-E40 -- C/2012 S1, C/2011 J2, 63P
B51Vallauris Obs. in France, 2 in MPEC 2013-E40 -- C/2012 S1, C/2011 UF305
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2013-E40 -- 262P
C90Vinyols Obs., 1 in MPEC 2013-E40 -- 63P
C28Wellinghofen Obs. in Germany, 2 in MPEC 2013-E40 -- C/2012 S1, C/2012 L2
198Wildberg Obs. in Germany, 1 in MPEC 2013-E40 -- 63P
D20Zadko Obs. in Western Australia, 1 in MPEC 2013-E36 -- 99942
727Zeno Obs. in Oklahoma, 1 in MPEC 2013-E36 -- 2013 ET
J08Zonalunar Obs. in Spain, 3 in MPEC 2013-E40 -- C/2012 S1, C/2011 J2, 273P
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2013-E40 -- C/2012 X1, 76P
Q621program code 1 via iTelescope Obs. Siding Spring in New South Wales, 6 in MPEC 2013-E40 -- C/2013 A1, C/2012 Y3, C/2012 C1, C/2011 O1, C/2010 G2, C/2009 F4
Q626program code 6 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-E40 -- C/2013 E1
Q627program code 7 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-E40 -- C/2013 A1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 March '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2319 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 EV27JPL Sentry21532038-208481.5e-05-5.51-5.550JPL: "Analysis based on 9 observations spanning 3.7693 days (2013-Mar-05.41619 to 2013-Mar-09.18551)." Diameter approximately 0.013 km. from mean, weighted H=27.0.
2013 EC20NEODyS1611R E M O V E D-
JPL Sentry0509R E M O V E DJPL: Risk listing removed at 0208 UTC.

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 9 March '13

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

2319Grabbed MPEC 2013-E41 - 2013 EC28 - see above
Grabbed MPEC 2013-E42 - 2013 ED28 - see above
2255Updated Traffic Report
2244Grabbed MPEC 2013-E40 - Observations and Orbits of Comets - see above
2153Noted that JPL Sentry has posted 2013 EV27 as an impact risk - see above
Grabbed MPEC 2013-E38 - 2013 EW27 - see above
Grabbed MPEC 2013-E39 - 2013 EY27 - see above
2009Grabbed MPEC 2013-E37 - 2013 EV27 - see above
1611Noted that NEODyS has removed 2013 EC20 as an impact risk - see above
Grabbed MPEC 2013-E36 - Daily Orbit Update - see above
0509Noted that JPL Sentry has removed 2013 EC20 as an impact risk - see above