Contents  on 26 October '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 26 October '12

Three objects reported inside ten LD

There are three asteroids reported traveling inside ten lunar distances (LD) of our planet today. 2012 TP231 is outbound from 8.49 to 9.76 LD and the two others exit from within ten LD. 2012 US18 moves from 8.08 to 10.29 LD and 2012 UF34 from 8.66 to 10.87 LD.

Coming our way next, 2012 UW9 and 2012 UX136 arrive inside ten LD tomorrow, 2012 UV136 arrives on November 1st, risk-listed 2012 UY68 on November 7th, and radar target 2010 JK1 on November 22nd.

This report was updated at 2337 UTC with a new discovery, the recently departed 2012 UU158 (MPEC). Today's first traffic report was posted at 1549 UTC with follow-up in today's DOU MPEC for 2012 UX136 and 2012 UV136.


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.

Radar Astrometry  on 26 October '12

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2119 UTC when the database was dated 26 Oct.

NEOCP Activity  on 26 October '12

The MPC's NEO Confirmation Page has 46 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 46 objects listed. Of these, 37 were "one nighters." So far The Tracking News has counted a total of 80 listings on the NEOCP today.

New MPECs  on 26 October '12

Minor Planet Electronic Circulars

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


<< OOC on 26 Oct. '12 >> MPEC 2012-U109 - "20:51 UT" - Observations and Orbits of Comets


MPEC 2012-U108 - "20:15 UT" - 2012 UW158


MPEC 2012-U107 - "20:13 UT" - 2012 UV158


MPEC 2012-U106 - "20:10 UT" - 2012 UU158


MPEC 2012-U105 - "16:50 UT" - 2012 UT158


MPEC 2012-U104 - "16:47 UT" - 2012 UR158


<< DOU on 26 Oct. '12 >>  MPEC 2012-U103 - "06:09 UT" - Daily Orbit Update

Observers  on 26 October '12

A total of 120 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 15 in MPEC 2012-U109 -- C/2012 T6, C/2012 T5, P/2012 SB6, C/2012 S1, C/2012 Q1, C/2012 K5, C/2012 A2, C/2010 S1, 261P, 260P, 256P, 244P, 168P, 71P, 37P
J97Alginet Obs. in Spain, 3 in MPEC 2012-U109 -- C/2012 S4, C/2012 J1, C/2010 S1
J24Altamira Obs. in the Canary Islands, 3 in MPEC 2012-U109 -- C/2012 S4, C/2008 FK75, 260P
251Arecibo in Puerto Rico, 1 in radar -- 136993
C60Argelander Institute for Astronomy Obs. in Germany, 1 in MPEC 2012-U109 -- C/2012 S1
H21Astronomical Research Obs. Westfield in Illinois, 23 in MPECs 2012-U103, 2012-U104, 2012-U105, 2012-U107 & 2012-U108 -- 2012 UZ68, 2012 UW27, 2012 UW158, 2012 UV158, 2012 UT158, 2012 US136, 2012 UR158, 2012 UD, 2012 TZ52, 2012 TS231, 2012 TQ139, 2012 TG53, 2012 RV16, 2012 QO10, 2012 QF49, 2012 QB17, 2012 PS17, 2005 CZ6, 1999 VR6, 326291, 303262, 162911, 137032
I47Auger Obs. in Argentina, 14 in MPECs 2012-U103 & 2012-U109 -- 2012 QE50, C/2011 O1, C/2011 L4, C/2011 F1, C/2011 A3, C/2010 G2, C/2009 F4, C/2006 S3, P/1997 C1, 260P, 246P, 242P, 185P, 29P
300Bisei Spaceguard Center in Japan, 2 in MPECs 2012-U107 & 2012-U108 -- 2012 UW158, 2012 UV158
C86Blanes Obs. in Spain, 1 in MPEC 2012-U109 -- 168P
I99Blanquita Obs. in Spain, 4 in MPEC 2012-U109 -- C/2012 J1, C/2010 S1, 260P, 168P
B59Borken Obs. in Germany, 2 in MPEC 2012-U109 -- C/2012 J1, 168P
B96Brixiis Obs. in Belgium, 19 in MPEC 2012-U109 -- P/2012 SB6, C/2012 S4, P/2012 S2, C/2012 S1, C/2012 L2, C/2012 L1, C/2012 J1, C/2012 A2, C/2011 UF305, C/2010 S1, C/2008 S3, 262P, 261P, 260P, 168P, 160P, 71P, 65P, 37P
215Buchloe Obs. in Germany, 8 in MPEC 2012-U109 -- C/2012 T5, P/2012 T3, P/2012 SB6, C/2012 J1, 260P, 168P, 120P, 37P
235CAST Obs. in Italy, 1 in MPEC 2012-U109 -- 168P
B20Carmelita Obs. in Spain, 1 in MPEC 2012-U109 -- 168P
I72Carpe-Noctem Obs., 9 in MPEC 2012-U109 -- P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2010 S1, 262P, 260P, 168P
B53Casal Lumbroso Obs. in Italy, 1 in MPEC 2012-U109 -- 168P
703Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2012-U103, 2012-U104, 2012-U107, 2012-U108 & 2012-U109 -- 2012 UW158, 2012 UV158, 2012 UR158, C/2012 T5, P/2012 T1, P/2012 R1, P/2012 P1, P/2012 O1, P/2012 NJ, C/2012 J1, C/2008 FK75, 52340, 192642, 17511, 17182, 162723, 144411, 12538, 5731, 244P, 160P, 78P, 71P
470Ceccano Obs. in Italy, 3 in MPECs 2012-U107 & 2012-U109 -- 2012 UV158, C/2012 S1, 168P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-U109 -- C/2012 T4
I84Cerro del Viento Obs., 1 in MPEC 2012-U109 -- 260P
A77Chante-Perdrix Obs. in France, 2 in MPEC 2012-U109 -- C/2012 J1, 168P
970Chelmsford Obs. in England, 7 in MPEC 2012-U109 -- C/2012 S4, C/2012 S1, C/2012 J1, C/2010 S1, 262P, 168P, 160P
J01Cielo Profundo Obs. in Spain, 11 in MPEC 2012-U109 -- C/2012 T6, C/2012 T5, C/2012 S1, C/2011 UF305, C/2010 S1, C/2009 P1, C/2008 S3, 261P, 260P, 168P, 37P
I51Clinton Obs., 4 in MPEC 2012-U109 -- C/2012 J1, C/2010 S1, 260P, 168P
850Cordell-Lorenz Obs. in Tennessee, 4 in MPEC 2012-U109 -- C/2012 S1, 213P, 168P, 65P
B50Corner Obs. in Germany, 3 in MPEC 2012-U109 -- C/2012 J1, 262P, 168P
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2012-U109 -- C/2012 T6
958Dax Obs. in France, 22 in MPEC 2012-U109 -- C/2012 S1, P/2012 O3, P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2012 A2, C/2011 UF305, C/2011 A3, C/2010 S1, C/2009 S3, C/2009 P1, C/2008 S3, C/2008 FK75, 261P, 260P, 168P, 160P, 78P, 71P, 37P
448Desert Moon Obs. in New Mexico, 4 in MPEC 2012-U103 -- 2012 UP27, 334412, 214869, 6569
C74El Teatrillo de Lyra Obs. in Spain, 2 in MPEC 2012-U109 -- C/2012 J1, 168P
I57Elche Obs., 8 in MPEC 2012-U109 -- C/2012 S1, C/2012 K5, C/2012 J1, C/2010 S1, 260P, 168P, 71P, 37P
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-U109 -- 168P
F658David Tholen's team in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-U109 -- C/2012 S3
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 5 in MPEC 2012-U109 -- C/2012 T4, C/2011 O1, C/2011 A3, 262P, 71P
E106program code 6 via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-U109 -- P/2012 T1
C18Frasnes-Lez-Anvaing Obs. in Belgium, 1 in MPEC 2012-U103 -- 99907
157Frasso Sabino Obs. in Italy, 6 in MPEC 2012-U109 -- P/2012 T7, C/2012 T5, P/2012 SB6, C/2012 S4, P/2012 S2, C/2012 S1
I88Fuensanta de Martos Obs., 1 in MPEC 2012-U109 -- 168P
C73Galati Obs. in Romania, 2 in MPEC 2012-U109 -- C/2012 S1, 260P
372Geisei Obs. in Japan, 11 in MPEC 2012-U109 -- P/2012 TK8, P/2012 T7, C/2012 T6, C/2012 T5, P/2012 T2, P/2012 SB6, C/2012 S4, C/2012 S1, C/2012 Q1, C/2009 P1, P/1997 C1
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 136993
511Haute Provence Obs. in Germany, 2 in MPEC 2012-U109 -- C/2012 J1, 160P
D88Hiratsuka Obs. in Japan, 8 in MPEC 2012-U109 -- C/2012 T5, P/2012 SB6, C/2012 S4, C/2012 J1, C/2008 FK75, 261P, 260P, 168P
C43Hoyerswerda Obs. in Germany, 3 in MPEC 2012-U109 -- C/2012 J1, 260P, 168P
D00ISON-Kislovodsk Obs., 1 in MPEC 2012-U109 -- C/2012 S1
H15ISON-NM Obs. in New Mexico, 2 in MPEC 2012-U109 -- C/2012 T5, C/2009 P1
B15Inastars Obs. in Germany, 1 in MPEC 2012-U109 -- C/2012 S1
A21Irmtraut Obs. in Germany, 3 in MPEC 2012-U109 -- C/2012 J1, C/2010 S1, 168P
987Isle of Man Obs. on the Isle of Man, 3 in MPEC 2012-U109 -- 262P, 260P, 168P
246KLENOT in the Czech Republic, 3 in MPEC 2012-U109 -- P/2012 TK8, P/2012 SB6, C/2012 Q1
C32Ka-Dar Obs. TAU Station in Russia, 44 in MPECs 2012-U104 & 2012-U109 -- 2012 UR158, C/2012 U1, P/2012 TK8, C/2012 T6, C/2012 T5, P/2012 T1, P/2012 SB6, C/2012 S4, C/2012 S3, P/2012 S2, C/2012 S1, C/2012 Q1, P/2012 O3, P/2012 O1, P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 A2, C/2011 UF305, P/2011 R3, P/2011 N1, C/2010 U3, C/2010 S1, C/2008 FK75, 262P, 261P, 260P, 242P, 215P, 189P, 185P, 175P, 168P, 160P, 120P, 114P, 78P, 71P, 65P, 63P, 48P
585Kiev Comet Station in the Ukraine, 5 in MPEC 2012-U109 -- C/2012 L2, C/2012 L1, C/2012 K5, C/2012 J1, C/2010 S1
352Konan Obs. in Japan, 3 in MPEC 2012-U109 -- C/2012 J1, C/2010 S1, 260P
C40Kuban State Univ. Obs. in Russia, 3 in MPEC 2012-U109 -- C/2012 K5, C/2011 F1, C/2006 S3
D95Kurihara Obs. in Japan, 10 in MPEC 2012-U109 -- C/2012 S1, C/2012 L2, C/2012 K5, C/2012 J1, C/2012 A2, C/2011 UF305, C/2010 S1, 260P, 189P, 168P
704LINEAR in New Mexico, 13 in MPEC 2012-U109 -- C/2012 T6, C/2012 T5, P/2012 SB6, P/2012 S2, P/2012 O3, C/2010 S1, C/2008 S3, C/2008 FK75, P/2006 Q2, P/1997 C1, 160P, 71P, 37P
J38La Vara Obs. in Spain, 14 in MPEC 2012-U109 -- C/2012 T5, C/2012 S1, P/2012 NJ, C/2012 L2, C/2012 K1, C/2012 J1, C/2010 S1, C/2008 S3, C/2008 FK75, 262P, 261P, 260P, 168P, 160P
304Las Campanas Obs. in Chile, 3 in MPEC 2012-U109 -- P/2012 T3, P/2012 T2, P/2012 T1
130Lumezzane Obs. in Italy, 4 in MPEC 2012-U109 -- C/2012 T6, P/2012 SB6, C/2012 S4, P/2012 S2
238MPC code 238, 1 in MPEC 2012-U109 -- C/2011 F1
C85MPC code C85, 1 in MPEC 2012-U109 -- P/2011 N1
I79MPC code I79, 1 in MPEC 2012-U109 -- 260P
C10Maisoncelles Obs. in France, 9 in MPEC 2012-U109 -- P/2012 TK8, P/2012 T7, C/2012 T6, C/2012 T5, P/2012 T3, P/2012 T2, P/2012 T1, P/2012 SB6, 168P
B10Mas des Gres Obs., 2 in MPEC 2012-U109 -- C/2012 J1, 168P
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2012-U109 -- P/2012 TK8, P/2012 T1
568_Marco Micheli on Mauna Kea in Hawaii, 3 in MPEC 2012-U109 -- C/2012 U1, P/2012 T2, P/2012 T1
118Modra Obs. in Slovakia, 1 in MPEC 2012-U104 -- 2012 UR158
152Moletai Obs. in Lithuania, 1 in MPEC 2012-U109 -- C/2012 S1
213Montcabre Obs. in Spain, 6 in MPEC 2012-U109 -- C/2012 K5, C/2012 K1, C/2012 J1, C/2010 S1, 260P, 168P
945Monte Deva Obs. in Spain, 4 in MPEC 2012-U109 -- C/2012 J1, C/2010 S1, 260P, 168P
900Moriyama Obs. in Japan, 20 in MPECs 2012-U107, 2012-U108 & 2012-U109 -- 2012 UW158, 2012 UV158, C/2012 T6, C/2012 T5, P/2012 SB6, P/2012 S2, C/2012 J1, C/2012 A2, C/2010 S1, C/2009 S3, C/2008 S3, C/2008 FK75, 262P, 261P, 260P, 168P, 160P, 158P, 71P, 37P
G84Mt. Lemmon SkyCenter in Arizona, 2 in MPEC 2012-U109 -- P/2012 T7, C/2012 S1
G96Mt. Lemmon Survey (MLS) in Arizona, 15 in MPECs 2012-U103, 2012-U104, 2012-U105, 2012-U106 & 2012-U109 -- 2012 UU158, 2012 UT158, 2012 UR158, C/2012 T5, P/2012 SB6, P/2012 P1, P/2012 O1, P/2006 Q2, 17182, 155340, 261P, 120P, 71P, 37P, 9P
E07Murrumbateman Obs. in New South Wales, 2 in MPEC 2012-U109 -- C/2012 T4, P/2012 T3
A13Naef Obs. in Switzerland, 2 in MPEC 2012-U109 -- P/1997 C1, 37P
D81Nagano Obs. in Japan, 3 in MPEC 2012-U109 -- C/2012 F6, 260P, 168P
J47Nazaret Obs. in Spain, 4 in MPEC 2012-U109 -- C/2012 S1, 261P, 168P, 65P
I89Nerpio Obs. in Italy, 1 in MPEC 2012-U109 -- 168P
A24New Millennium Obs. in Italy, 6 in MPEC 2012-U103 -- 2008 HV4, 2005 SH19, 333358, 250458, 18882, 17182
0892Oleksandr V. Shulga via Nikolaev Obs. in the Ukraine, 7 in MPECs 2012-U103 & 2012-U109 -- 2012 US136, 2012 RV16, 329338, 276397, 162911, 136993, 260P
C47Nonndorf Obs. in Austria, 4 in MPEC 2012-U109 -- C/2012 S1, C/2010 S1, 260P, 168P
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2012-U109 -- 168P
411Oizumi Obs. in Japan, 1 in MPEC 2012-U109 -- C/2012 S1
C23Olmen Obs. in Belgium, 20 in MPEC 2012-U109 -- C/2012 T5, C/2012 S4, C/2012 S1, P/2012 NJ, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 A2, C/2011 UF305, C/2010 S1, C/2008 S3, C/2008 FK75, 262P, 260P, 168P, 160P, 71P, 37P
B69Owls & Ravens Obs. in Germany, 4 in MPEC 2012-U109 -- C/2012 S4, C/2012 L2, 260P, 168P
F51Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2012-U103, 2012-U105, 2012-U106 & 2012-U109 -- 2012 UV136, 2012 UU158, 2012 UT158, C/2012 T5, P/2012 T1, P/2012 SB6, C/2012 S4, P/2012 P1, C/2009 S3, 260P, 172P, 168P, 158P, 71P
A32Panker Obs. in Germany, 9 in MPEC 2012-U109 -- P/2012 NJ, C/2012 J1, C/2010 S1, C/2008 FK75, 262P, 261P, 260P, 189P, 168P
H23Pear Tree Obs. in Florida, 4 in MPECs 2012-U103 & 2012-U109 -- 2012 QF49, C/2012 J1, 260P, 168P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2012-U109 -- 260P, 168P
586Pic du Midi Obs. in France, 15 in MPEC 2012-U109 -- P/2012 T1, C/2012 S4, P/2012 S2, C/2012 S1, P/2012 NJ, C/2012 A2, C/2011 UF305, C/2010 S1, 261P, 260P, 168P, 120P, 65P, 37P, 2P
J52Pinsoro Obs. in Spain, 5 in MPEC 2012-U109 -- C/2012 S1, C/2012 J1, 260P, 185P, 168P
H06#M. Suzuki via RAS Obs. Mayhill in New Mexico, 2 in MPEC 2012-U109 -- 260P, 168P
H06{program code "{" (31) via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-U109 -- 260P
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-U109 -- C/2012 F6
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 7 in MPEC 2012-U109 -- P/2012 S2, C/2012 Q1, C/2012 C1, C/2011 O1, 158P, 114P, 71P
071Rhozen Obs. in Bulgaria, 8 in MPEC 2012-U109 -- C/2012 S1, C/2012 L2, C/2012 J1, C/2012 A2, C/2011 UF305, C/2011 L4, C/2010 S1, 71P
C79Roser Obs., 1 in MPEC 2012-U109 -- 168P
C09Rouet Obs. in France, 3 in MPEC 2012-U109 -- C/2012 J1, 260P, 160P
461SZTE Asteroid Program in Hungary, 5 in MPECs 2012-U104 & 2012-U109 -- 2012 UR158, C/2012 S1, C/2012 J1, 168P, 121P
H36Sandlot Obs. in Kansas, 2 in MPECs 2012-U104 & 2012-U109 -- 2012 UR158, C/2012 S1
B70Sant Celoni Obs. in Spain, 1 in MPEC 2012-U109 -- 168P
B56Sant Pere Obs. in Spain, 2 in MPEC 2012-U109 -- C/2012 J1, 168P
204Schiaparelli Obs. in Italy, 9 in MPECs 2012-U103, 2012-U104 & 2012-U109 -- 2012 UR158, 2012 UC, 2012 TS231, 2012 TR231, 2012 TM139, 2012 RF15, 2007 RT19, 2005 CZ6, 168P
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2012-U103 & 2012-U109 -- 2012 UX136, C/2012 T4
510Siegen Obs. in Germany, 6 in MPEC 2012-U109 -- C/2012 K5, C/2012 J1, C/2010 S1, 262P, 260P, 168P
G40Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2012-U109 -- 260P
691Spacewatch 0.9m telescope in Arizona, 7 in MPECs 2012-U103 & 2012-U109 -- C/2012 T5, P/2012 P1, C/2010 U3, 1999 VR6, P/1997 C1, 137044, 244P
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2012-U103, 2012-U104, 2012-U105, 2012-U107, 2012-U108 & 2012-U109 -- 2012 UZ33, 2012 UW158, 2012 UV158, 2012 UT158, 2012 US136, 2012 UR158, 2012 UR136, 2012 UE34, 2012 TX284, 2012 TP139, C/2012 T5
C36Starry Wanderer Obs. in Belarus, 3 in MPEC 2012-U109 -- P/2012 S2, 260P, 168P
A71Stixendorf Obs. in Austria, 9 in MPEC 2012-U109 -- P/2012 TK8, C/2012 T6, P/2012 T1, P/2012 SB6, P/2012 S2, C/2012 J1, 260P, 168P, 160P
A98Taurus-1 Obs. in Belarus, 5 in MPEC 2012-U109 -- C/2012 S4, C/2012 J1, C/2010 S1, 260P, 168P
954Teide Obs. in the Canary Islands, 4 in MPECs 2012-U103 & 2012-U109 -- 2012 UX136, C/2012 T5, C/2012 J1, 168P
926Tenagra II Obs. in Arizona, 5 in MPECs 2012-U104, 2012-U105 & 2012-U109 -- 2012 UT158, 2012 UR158, P/2012 S2, C/2008 FK75, P/1997 C1
I76Tesla Obs. in Spain, 1 in MPEC 2012-U109 -- 168P
A92Urseanu Obs. in Romania, 1 in MPEC 2012-U109 -- 168P
B51Vallauris Obs. in France, 9 in MPEC 2012-U109 -- C/2012 S4, C/2012 S3, C/2012 J1, C/2012 A2, C/2011 UF305, C/2010 S1, 260P, 168P, 160P
H47Vicksburg Obs. in Mississippi, 4 in MPEC 2012-U109 -- P/2012 S2, C/2012 S1, 260P, 168P
C90Vinyols Obs., 2 in MPEC 2012-U109 -- C/2012 J1, 168P
C28Wellinghofen Obs. in Germany, 5 in MPEC 2012-U109 -- C/2012 K5, C/2012 J1, C/2012 A2, C/2010 S1, 168P
718Wiggins Obs. in Utah, 1 in MPEC 2012-U103 -- 2012 RV16
198Wildberg Obs. in Germany, 2 in MPECs 2012-U107 & 2012-U108 -- 2012 UW158, 2012 UV158
C42Xingming Obs. in China, 1 in MPEC 2012-U109 -- C/2012 S1
367Yatsuka Obs. in Japan, 16 in MPEC 2012-U109 -- C/2012 T6, C/2012 T5, C/2012 S4, P/2012 S2, C/2012 S1, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 F6, C/2011 J2, C/2011 F1, C/2010 S1, C/2009 P1, 262P, 260P, 168P
J08Zonalunar Obs. in Spain, 1 in MPEC 2012-U109 -- C/2012 T5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 October '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 UU158JPL Sentry23092029-2108441.0e-04-4.75-4.860JPL: "Analysis based on 7 observations spanning 1.8964 days (2012-Oct-23.50549 to 2012-Oct-25.40194)." Diameter approximately 0.014 km. from mean, weighted H=26.9.
2012 UR158JPL Sentry19002024-2081309.3e-07-3.03-3.190JPL: "Analysis based on 42 observations spanning 3.9956 days (2012-Oct-22.4752 to 2012-Oct-26.47079)." Diameter approximately 0.278 km. from mean, weighted H=20.4.
2012 UR138NEODyS15452020-2098613.9e-07-4.62-5.110NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2012-10-23.513 to 2012-10-25.494."
2012 UR136JPL Sentry1545R E M O V E DJPL: Risk listing removed at 0951 UTC.
2012 UE34JPL Sentry15452027-20772008.8e-06-4.34-4.890JPL: "Analysis based on 22 observations spanning 6.9254 days (2012-Oct-18.393522 to 2012-Oct-25.31896)." Diameter approximately 0.077 km. from mean, weighted H=23.2.
NEODyS15452034-21001122.78e-05-4.00-4.960NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2012-10-18.394 to 2012-10-25.320."
2012 UZ33JPL Sentry15452015-209835.9e-07-2.78-2.850JPL: "Analysis based on 41 observations spanning 7.9044 days (2012-Oct-17.44832 to 2012-Oct-25.35275)." Diameter approximately 0.494 km. from mean, weighted H=19.2.
NEODyS15452015-201824.09e-08-3.22-3.230NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2012-10-17.449 to 2012-10-25.354."

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 26 October '12

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

2337Updated Traffic Report
2309Noted that JPL Sentry has posted 2012 UU158 as an impact risk - see above
2119Grabbed MPEC 2012-U106 - 2012 UU158 - see above
Grabbed MPEC 2012-U107 - 2012 UV158 - see above
Grabbed MPEC 2012-U108 - 2012 UW158 - see above
Grabbed MPEC 2012-U109 - Observations and Orbits of Comets - see above
Noted Radar Astrometry database update - see above
1900Noted that JPL Sentry has posted 2012 UR158 as an impact risk - see above
1709Grabbed MPEC 2012-U104 - 2012 UR158 - see above
Grabbed MPEC 2012-U105 - 2012 UT158 - see above
1545Noted 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 JPL Sentry has removed 2012 UR136 as an impact risk - see above
Noted that NEODyS has posted 2012 UR138 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 UZ33 risk assessment - see above
Noted that NEODyS has updated its 2012 UZ33 risk assessment - see above
Grabbed MPEC 2012-U103 - Daily Orbit Update - see above