Contents  on 12 February '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 12 February '13

Four objects reported inside ten LD

Four asteroids are reported to be within ten lunar distances (LD) of our planet today. Radar target 2013 BV15 enters Earth's Hill sphere, coming in from 4.41 to 3.74 LD. Out further, intruder 2012 DA14 (risk-listed radar target) is inbound from 5.35 to 3.97 LD, radar target 2013 BS45 comes its closest to Earth on this passage, reaching 4.89 LD at 0117 UT, and risk-listed intruder 2013 CY is outbound from 8.81 to 9.42 LD.

Headed our way next, 2013 CE82 comes inside ten LD on February 14th and risk-listed 2007 EO88 arrives on March 15th.

This report was generated at 1721 UTC with follow-up in today's DOU MPEC for 2013 CE82, 2013 CY, 2013 BV15, 2012 DA14, and departed 2013 CL22 and 2013 BD74 (adding 8.76 days to the previous 3.11-day observing arc).



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. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 12 February '13

The MPC's NEO Confirmation Page has 34 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 34 objects listed. Of these, seventeen were "one nighters." So far The Tracking News has counted a total of 57 listings on the NEOCP today.

New MPECs  on 12 February '13

Minor Planet Electronic Circulars

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


MPEC 2013-C60 - "20:40 UT" - 2013 CW83


MPEC 2013-C59 - "20:35 UT" - 2013 CV83


MPEC 2013-C58 - "20:26 UT" - 2013 CU83


MPEC 2013-C57 - "20:21 UT" - 2013 CT83


MPEC 2013-C56 - "19:46 UT" - 2013 CS83


MPEC 2013-C55 - "17:25 UT" - 2012 JS17


MPEC 2013-C54 - "14:43 UT" - 2010 MU112


<< DOU on 12 Feb. '13 >>  MPEC 2013-C53 - "06:04 UT" - Daily Orbit Update


<< OOC on 12 Feb. '13 >> MPEC 2013-C52 - "02:17 UT" - Observations and Orbits of Comets


MPEC 2013-C51 - "01:23 UT" - 2013 CV82


MPEC 2013-C50 - "01:19 UT" - 2013 CU82


MPEC 2013-C49 - "01:14 UT" - 2013 CT82

Observers  on 12 February '13

A total of 116 observers appear in today's MPECs.

CodeObserver / observatory
B17AZT-8 Evpatoria in the Ukraine, 1 in MPEC 2013-C53 -- 99942
349Ageo Obs. in Japan, 21 in MPEC 2013-C52 -- C/2012 V2, C/2012 T5, C/2012 K5, C/2012 K1, C/2012 A1, C/2011 R1, C/2011 J2, C/2010 U3, C/2010 R1, C/2009 P1, C/2008 FK75, C/2006 S3, C/2005 L3, 273P, 272P, 270P, 262P, 244P, 175P, 117P, 29P
G53Alder Springs Obs. in northern California, 1 in MPEC 2013-C53 -- 190119
J24Altamira Obs. in the Canary Islands, 27 in MPEC 2013-C52 -- C/2013 A1, C/2012 Y3, C/2012 Y1, C/2012 X1, C/2012 V2, P/2012 US27, C/2012 T5, C/2012 S4, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, P/2012 B1, C/2012 A2, C/2011 J2, C/2009 P1, C/2006 S3, 274P, 272P, 262P, 260P, 244P, 175P, 117P, 114P, 63P
Z74Amanecer de Arrakis Obs., 2 in MPEC 2013-C52 -- C/2012 S1, C/2012 L2
7057Krisztian Sarneczky via Apache Point Obs. in New Mexico, 2 in MPEC 2013-C52 -- P/2008 T1, 160P
C60Argelander Institute for Astronomy Obs. in Germany, 1 in MPEC 2013-C52 -- C/2012 S1
I79AstroCamp Nerpio, 1 in MPEC 2013-C52 -- C/2012 S1
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2013-C55, 2013-C56, 2013-C57, 2013-C58 & 2013-C60 -- 2013 CW83, 2013 CU83, 2013 CT83, 2013 CS83, 2012 JS17
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2013-C52 -- C/2012 L1, C/2012 K5, 274P
I47Auger Obs. in Argentina, 1 in MPEC 2013-C52 -- C/2012 T5
300Bisei Spaceguard Center in Japan, 3 in MPECs 2013-C53 & 2013-C59 -- 2013 CV83, 2013 CE82, 2000 DL8
C86Blanes Obs. in Spain, 5 in MPEC 2013-C52 -- C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1
I99Blanquita Obs. in Spain, 5 in MPEC 2013-C52 -- C/2012 S1, C/2012 L2, C/2012 K5, C/2011 UF305, C/2011 J2
B59Borken Obs. in Germany, 1 in MPEC 2013-C52 -- C/2012 K5
B96Brixiis Obs. in Belgium, 1 in MPEC 2013-C52 -- C/2012 S1
215Buchloe Obs. in Germany, 6 in MPEC 2013-C52 -- C/2012 S1, C/2012 L1, C/2012 K5, C/2012 A2, C/2011 UF305, 262P
235CAST Obs. in Italy, 5 in MPEC 2013-C52 -- C/2012 V2, C/2012 S1, C/2012 L2, C/2012 K5, 63P
B20Carmelita Obs. in Spain, 1 in MPEC 2013-C52 -- C/2012 K5
I72Carpe-Noctem Obs., 7 in MPEC 2013-C52 -- C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2011 UF305, 63P
B66Casasco Obs. in Italy, 3 in MPEC 2013-C52 -- C/2012 S1, C/2012 L2, 63P
703Catalina Sky Survey (CSS) in Arizona, 19 in MPECs 2013-C52, 2013-C53, 2013-C59 & 2013-C60 -- 2013 CW83, 2013 CV83, 2013 AY52, 2013 AA32, C/2012 X1, C/2012 S1, 2011 SD173, 2011 BK24, 2010 XL69, C/2010 R1, 2010 GE25, C/2009 P1, 2008 DG17, 2000 DL8, 7358, 272P, 266P, 261P, 244P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPEC 2013-C53 -- 2013 BE74, 2013 BC74, 2013 AQ27, 2012 VV93, 2012 SD22, 2012 QC8, 2010 BB, 2005 DD, 347813, 325102, 276732
G58Chabot Obs. in northern California, 2 in MPEC 2013-C53 -- 2013 BD74, 2013 AL11
A77Chante-Perdrix Obs. in France, 2 in MPEC 2013-C52 -- 273P, 117P
J01Cielo Profundo Obs. in Spain, 10 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5, P/2012 B1, C/2011 UF305, C/2011 J2, C/2009 P1, C/2006 S3, 273P, 63P, 29P
C13Como Obs. in Italy, 2 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5
850Cordell-Lorenz Obs. in Tennessee, 2 in MPEC 2013-C52 -- C/2012 S1, C/2011 J2
822Cordoba Obs. in Argentina, 1 in MPEC 2013-C52 -- C/2012 F6
B50Corner Obs. in Germany, 1 in MPEC 2013-C52 -- C/2012 S1
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2013-C52 -- 274P
I17Cupillari Obs. in Pennsylvania, 2 in MPEC 2013-C52 -- C/2012 S1, C/2011 UF305
958Dax Obs. in France, 1 in MPEC 2013-C60 -- 2013 CW83
448Desert Moon Obs. in New Mexico, 5 in MPEC 2013-C53 -- 2013 CL22, 2009 DK46, 222165, 177049, 136993
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPECs 2013-C52 & 2013-C53 -- 2013 CN35, C/2012 S1, C/2012 L1, C/2012 K5
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 7 in MPECs 2013-C49, 2013-C50, 2013-C51, 2013-C53, 2013-C56, 2013-C59 & 2013-C60 -- 2013 CW83, 2013 CV83, 2013 CV82, 2013 CU82, 2013 CT82, 2013 CS83, 2013 BM76
K36Ebersheim Obs., 1 in MPEC 2013-C52 -- C/2012 S1
J19El Maestrat Obs. in Spain, 1 in MPEC 2013-C52 -- C/2011 J2
I57Elche Obs., 12 in MPEC 2013-C52 -- C/2012 X2, C/2012 X1, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2009 P1, C/2006 S3, 274P, 262P, 29P
E85Farm Cove Obs. in New Zealand, 4 in MPEC 2013-C52 -- C/2012 Y1, C/2011 UF305, C/2009 P1, 242P
157Frasso Sabino Obs. in Italy, 3 in MPEC 2013-C52 -- C/2013 B2, P/2013 A2, C/2012 S1
I88Fuensanta de Martos Obs., 2 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5
372Geisei Obs. in Japan, 6 in MPEC 2013-C52 -- C/2013 B2, P/2013 A2, C/2012 J1, C/2010 G2, C/2009 P1, 273P
203GiaGa Obs. in Italy, 2 in MPEC 2013-C52 -- C/2011 UF305, 274P
458Guadarrama Obs. in Spain, 1 in MPEC 2013-C52 -- C/2012 L1
511Haute Provence Obs. in Germany, 8 in MPEC 2013-C52 -- C/2012 X1, C/2012 V2, C/2012 L1, C/2012 A2, C/2011 J2, 274P, 272P, 63P
D88Hiratsuka Obs. in Japan, 7 in MPEC 2013-C52 -- C/2012 X1, C/2012 V2, C/2012 K5, C/2011 J2, 260P, 168P, 63P
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2013-C52 -- C/2012 K5
048Hradec Kralove Obs. in the Czech Republic, 3 in MPEC 2013-C52 -- C/2012 V2, P/2012 S2, C/2012 S1
D00ISON-Kislovodsk Obs., 4 in MPECs 2013-C52 & 2013-C53 -- C/2012 S1, C/2012 K5, C/2006 S3, 2005 SG19
H15ISON-NM Obs. in New Mexico, 2 in MPEC 2013-C52 -- P/2012 US27, 244P
B15Inastars Obs. in Germany, 1 in MPEC 2013-C52 -- C/2012 S1
987Isle of Man Obs. on the Isle of Man, 2 in MPEC 2013-C52 -- C/2012 S1, C/2011 J2
585Kiev Comet Station in the Ukraine, 3 in MPEC 2013-C52 -- C/2012 V2, C/2012 T5, C/2012 L2
C40Kuban State Univ. Obs. in Russia, 1 in MPEC 2013-C53 -- 99942
D95Kurihara Obs. in Japan, 26 in MPEC 2013-C52 -- P/2013 A2, C/2012 X2, C/2012 X1, C/2012 V2, P/2012 US27, C/2012 S1, C/2012 L2, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 A2, C/2012 A1, C/2011 UF305, C/2011 R1, C/2011 J2, C/2010 S1, C/2010 R1, C/2009 P1, C/2006 S3, 274P, 273P, 244P, 175P, 117P, 63P, 29P
W86LCOGT Cerro Tololo B in Chile, 3 in MPECs 2013-C49, 2013-C53 & 2013-C57 -- 2013 CT83, 2013 CT82, 2012 DA14
212La Dehesilla Obs. in Spain, 14 in MPEC 2013-C52 -- C/2012 X1, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2012 A2, C/2011 J2, C/2009 P1, 274P, 272P, 175P, 78P, 63P
J38La Vara Obs. in Spain, 4 in MPEC 2013-C52 -- C/2012 L2, C/2012 K5, C/2012 J1, C/2012 A2
A14Les Engarouines Obs. in France, 1 in MPEC 2013-C52 -- 117P
J134program code 4 via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2013-C52 -- C/2012 S1
844Los Molinos Obs. in Uruguay, 3 in MPEC 2013-C52 -- C/2012 F6, C/2011 R1, C/2011 L4
130Lumezzane Obs. in Italy, 6 in MPECs 2013-C52 & 2013-C53 -- P/2012 US27, 2010 QD2, 2009 BD2, 177049, 17188, 162011
C10Maisoncelles Obs. in France, 7 in MPEC 2013-C52 -- C/2012 S1, P/2012 B1, C/2011 UF305, 244P, 176P, 175P, 63P
232Masquefa Obs. in Spain, 4 in MPEC 2013-C52 -- C/2012 K5, C/2012 J1, C/2011 UF305, 63P
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPECs 2013-C53 & 2013-C54 -- 2013 CY, 2013 BE27, 2010 MU112
568_Marco Micheli on Mauna Kea in Hawaii, 5 in MPECs 2013-C49, 2013-C50, 2013-C51, 2013-C57 & 2013-C58 -- 2013 CV82, 2013 CU83, 2013 CU82, 2013 CT83, 2013 CT82
711McDonald Obs. in Texas, 3 in MPECs 2013-C52, 2013-C57 & 2013-C58 -- 2013 CU83, 2013 CT83, C/2012 S1
152Moletai Obs. in Lithuania, 1 in MPEC 2013-C52 -- C/2012 K5
213Montcabre Obs. in Spain, 10 in MPEC 2013-C52 -- C/2013 B2, P/2013 A2, C/2012 T5, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 A2, 273P, 29P
C91Montevenere Obs., 6 in MPECs 2013-C52 & 2013-C53 -- C/2012 S1, C/2012 L1, 2010 QD2, 99942, 5646, 2062
900Moriyama Obs. in Japan, 14 in MPEC 2013-C52 -- C/2012 Y3, C/2012 Y1, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 K5, P/2012 B1, C/2011 UF305, C/2011 J2, C/2009 P1, 274P, 168P, 78P, 63P
474Mt. John Obs. in New Zealand, 1 in MPEC 2013-C53 -- 2012 DA14
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2013-C52 & 2013-C56 -- 2013 CS83, 274P, 270P, 256P, 175P, 10P
E07Murrumbateman Obs. in New South Wales, 13 in MPEC 2013-C52 -- C/2013 A1, C/2012 Y3, C/2012 T6, C/2012 K5, C/2012 F6, C/2012 C1, P/2011 R3, C/2011 O1, C/2009 P1, C/2009 F4, 78P, 26P, 21P
D81Nagano Obs. in Japan, 2 in MPEC 2013-C52 -- C/2006 S3, 273P
A24New Millennium Obs. in Italy, 8 in MPECs 2013-C52 & 2013-C53 -- C/2012 S1, C/2012 L2, C/2012 L1, C/2011 UF305, 4179, 2062, 260P, 186P
0892Oleksandr V. Shulga via Nikolaev Obs. in the Ukraine, 2 in MPEC 2013-C52 -- C/2012 K5, 262P
C47Nonndorf Obs. in Austria, 7 in MPEC 2013-C52 -- C/2012 V2, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 A2, C/2011 J2, 63P
C23Olmen Obs. in Belgium, 22 in MPEC 2013-C52 -- C/2012 X1, C/2012 V2, 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 S1, C/2010 R1, C/2006 S3, 274P, 273P, 262P, 260P, 168P, 117P, 63P, 29P
557Ondrejov Obs. in the Czech Republic, 1 in MPEC 2013-C52 -- C/2012 S1
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2013-C52 -- 134P
C27Pallerols Obs. in Spain, 2 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5
F51Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2013-C49, 2013-C51, 2013-C52, 2013-C53, 2013-C57 & 2013-C58 -- 2013 CV82, 2013 CU83, 2013 CT83, 2013 CT82, 2012 LK9, C/2012 F6, P/2011 W1, 277127, 162900, 11054, 5836, 269P, 266P, 138P, 134P, 63P
B49Paus Obs. in Spain, 1 in MPEC 2013-C52 -- 63P
H23Pear Tree Obs. in Florida, 1 in MPEC 2013-C52 -- C/2012 S1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 26 in MPECs 2013-C52 & 2013-C53 -- 2013 CN35, 2013 BV15, C/2012 Y1, 2012 XY6, 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, 2010 QD2, C/2009 P1, C/2008 FK75, 99942, 274P, 270P, 262P, 260P, 175P, 63P
J53Posadas Obs. in Spain, 3 in MPEC 2013-C52 -- C/2012 S1, C/2012 L1, 274P
D29Purple Mtn. Obs. Xuyi Station in China, 4 in MPECs 2013-C52 & 2013-C53 -- 2013 CW35, P/2012 B1, 244P, 175P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 25 in MPEC 2013-C52 -- P/2013 A2, C/2013 A1, C/2012 Y3, C/2012 Y1, C/2012 K6, C/2012 K5, C/2012 F6, C/2012 C1, P/2012 B1, C/2011 UF305, C/2011 R1, C/2011 O1, C/2011 L4, C/2010 R1, C/2009 P1, C/2009 F4, C/2006 S3, 262P, 244P, 242P, 185P, 175P, 117P, 78P, 29P
939Rodeno Obs. in Spain, 5 in MPEC 2013-C52 -- C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2012 A2
V05Rusty Mtn. Obs., 1 in MPEC 2013-C52 -- C/2012 S1
233San Vito Obs. in Italy, 2 in MPEC 2013-C52 -- C/2012 L2, C/2012 L1
H36Sandlot Obs. in Kansas, 4 in MPECs 2013-C52, 2013-C53, 2013-C56 & 2013-C59 -- 2013 CV83, 2013 CS83, 2013 BV15, 256P
B70Sant Celoni Obs. in Spain, 5 in MPEC 2013-C52 -- C/2012 S1, C/2011 UF305, C/2011 J2, 272P, 63P
510Siegen Obs. in Germany, 3 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5, C/2011 J2
G68Sierra Stars Obs. in northern California, 2 in MPEC 2013-C52 -- C/2012 S1, P/2012 B1
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2013-C53 -- 2013 AB53
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2013-C52 & 2013-C53 -- 2013 AB53, 138P
291Spacewatch 1.8m telescope in Arizona, 16 in MPECs 2013-C49, 2013-C50, 2013-C52, 2013-C53, 2013-C57 & 2013-C58 -- 2013 CU83, 2013 CU82, 2013 CT83, 2013 CT82, 2013 CL22, P/2013 AL76, P/2013 A2, P/2012 TK8, P/2012 SB6, P/2012 O3, P/2011 S1, P/2010 JC81, 2000 ED14, 79P, 48P, 36P
K21St. Saturnin les Avignon Obs., 2 in MPEC 2013-C52 -- C/2012 K5, 262P
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2013-C52 -- C/2012 S1
I81Tarbatness Obs. in Scotland, 3 in MPEC 2013-C52 -- C/2012 S1, C/2012 L1, C/2012 A2
926Tenagra II Obs. in Arizona, 5 in MPECs 2013-C52 & 2013-C53 -- C/2012 X1, 2368, 272P, 78P, 63P
C35Terrassa Obs., 2 in MPEC 2013-C52 -- C/2012 K5, C/2011 UF305
B51Vallauris Obs. in France, 3 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5, C/2011 J2
2904Carl Hergenrother via Vatican Advanced Technology Telescope (VATT) in Arizona, 12 in MPEC 2013-C52 -- C/2013 A1, C/2012 X1, C/2012 V2, C/2012 T5, C/2012 S1, C/2012 K1, C/2011 UF305, C/2009 P1, 175P, 168P, 63P, 26P
H47Vicksburg Obs. in Mississippi, 6 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5, C/2011 UF305, C/2009 P1, 274P, 262P
I45W Crucis Obs. in Argentina, 1 in MPEC 2013-C52 -- C/2012 F6
I42Westport Obs. in Massachusetts, 3 in MPEC 2013-C53 -- 2013 CN35, 2013 AU76, 2013 AM60
718Wiggins Obs. in Utah, 1 in MPEC 2013-C59 -- 2013 CV83
C42Xingming Obs. in China, 2 in MPEC 2013-C52 -- C/2012 S1, 273P
367Yatsuka Obs. in Japan, 8 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5, C/2011 UF305, C/2011 J2, C/2006 S3, 273P, 117P, 63P
J08Zonalunar Obs. in Spain, 1 in MPEC 2013-C52 -- C/2012 S1
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-C59 -- 2013 CV83
H06#M. Suzuki via iTelescope Obs. Mayhill in New Mexico, 4 in MPEC 2013-C52 -- C/2012 X1, C/2012 S1, 273P, 63P
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-C52 -- 63P
H06*Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-C52 -- C/2012 S1
H06Lprogram code "L" via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-C52 -- C/2012 S1
H06`Erik Bryssinck in Belgium via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-C52 -- C/2012 S1
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 15 in MPEC 2013-C52 -- C/2013 B2, P/2013 AL76, P/2013 A2, P/2012 WA34, P/2012 U2, P/2012 SB6, C/2012 F3, C/2012 B3, C/2011 UF305, P/2011 N1, C/2011 L6, P/2004 H2, 272P, 266P, 114P
I89iTelescope Obs. Nerpio in Spain, 2 in MPEC 2013-C52 -- C/2012 S1, C/2012 K5
Q621program code 1 via iTelescope Obs. Siding Spring in New South Wales, 2 in MPEC 2013-C52 -- C/2012 Y3, C/2012 K6
Q626program code 6 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-C52 -- C/2012 F6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 February '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 CU83JPL Sentry23012024-2111751.1e-07-5.12-6.260JPL: "Analysis based on 15 observations spanning 1.8951 days (2013-Feb-10.40949 to 2013-Feb-12.304573)." Diameter approximately 0.196 km. from mean, weighted H=21.2.
2013 CT82NEODyS17142015-2100474.26e-07-2.00-2.080NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2013-02-08.487 to 2013-02-12.006."
JPL Sentry04212015-21121948.2e-07-1.82-2.010JPL: "Analysis based on 19 observations spanning 3.5193 days (2013-Feb-08.48634 to 2013-Feb-12.00565)." Diameter approximately 0.919 km. from mean, weighted H=17.8.
2013 CL22JPL Sentry1714206433.5e-06-5.39-5.560JPL: "Analysis based on 61 observations spanning 6.4549 days (2013-Feb-05.05792 to 2013-Feb-11.51285)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
NEODyS17142064-206429.88e-07-5.94-5.990NEODyS: "Based on 61 optical observations (of which 3 are rejected as outliers) from 2013-02-05.059 to 2013-02-11.514."
2013 CYJPL Sentry17142069-209864.0e-06-7.33-7.830JPL: "Analysis based on 66 observations spanning 8.2700 days (2013-Feb-01.34874 to 2013-Feb-09.618719)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
NEODyS17142072-2098147.8e-06-7.09-7.880NEODyS: "Based on 66 optical observations (of which 0 are rejected as outliers) from 2013-02-01.350 to 2013-02-09.619."
2012 DA14JPL Sentry17142080-210933.4e-06-5.36-5.450JPL: "Analysis based on 297 observations spanning 354.46 days (2012-Feb-23.03431 to 2013-Feb-11.49616)." Diameter approximately 0.051 km. from mean, weighted H=24.1.
NEODyS17142080-209762.43e-05-4.48-4.530NEODyS: "Based on 300 optical observations (of which 4 are rejected as outliers) from 2012-02-23.029 to 2013-02-11.497."

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 12 February '13

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

2301Noted that JPL Sentry has posted 2013 CU83 as an impact risk - see above
2100Grabbed MPEC 2013-C57 - 2013 CT83 - see above
Grabbed MPEC 2013-C58 - 2013 CU83 - see above
Grabbed MPEC 2013-C59 - 2013 CV83 - see above
Grabbed MPEC 2013-C60 - 2013 CW83 - see above
2001Grabbed MPEC 2013-C56 - 2013 CS83 - see above
1819Grabbed MPEC 2013-C55 - 2012 JS17 - see above
1721Generated Traffic Report
1714Noted that JPL Sentry has updated its 2012 DA14 risk assessment - see above
Noted that NEODyS has updated its 2012 DA14 risk assessment - see above
Noted that JPL Sentry has updated its 2013 CL22 risk assessment - see above
Noted that NEODyS has updated its 2013 CL22 risk assessment - see above
Noted that NEODyS has posted 2013 CT82 as an impact risk - see above
Noted that JPL Sentry has updated its 2013 CY risk assessment - see above
Noted that NEODyS has updated its 2013 CY risk assessment - see above
Grabbed MPEC 2013-C53 - Daily Orbit Update - see above
Grabbed MPEC 2013-C54 - 2010 MU112 - see above
0421Noted that JPL Sentry has posted 2013 CT82 as an impact risk - see above
0222Grabbed MPEC 2013-C52 - Observations and Orbits of Comets - see above
0153Grabbed MPEC 2013-C51 - 2013 CV82 - see above
0124Grabbed MPEC 2013-C49 - 2013 CT82 - see above
Grabbed MPEC 2013-C50 - 2013 CU82 - see above