2012-01-20 Tracking News

Contents on 20 January '12

Traffic Report -- four objects
IAU Minor Planet Center
- NEOCP Activity -- 30 listings
- New MPECs -- ten MPECs
Observers -- 74 observers
Impact Risk Monitoring -- five objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page (archive)
Of 426 risk-listed objects, 19 have had news in the last 31 days. Updated at 2359 UTC on 20 Jan.
Earth's Busy Neighborhood close passer EBN Traffic Report
Four objects are known to be within ten LD of Earth today. Updated at 1605 UTC on 20 Jan.
Ephemerides for risk-rated & nearby objects + potential mission destinations
News image catalog
News old archive & Small Objects Archive
Object Links - mainly for radar targets & close passers - updated 8 Jan.
Observing Campaigns

The latest A/CC news is available via framed access, 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 20 January '12

Four objects reported inside ten LD

There are four rocky visitors reported traveling inside ten lunar distances (LD) of Earth today. Intruder 2012 BV1 is inside the Earth-Moon system. Further away, 2012 AQ10 is departing, traveling from 5.91 to 7.39 LD, 2012 BS1 comes in from 8.4 to 6.6 LD*, and 2011 YH40 exits ten LD, passing from 8.58 to 10.26 LD.

Coming toward Earth, risk-listed 2012 BY1 arrives inside ten LD on January 22nd and radar target 2011 CP4 comes inside on February 22nd.

This report was updated at 2354 UTC with new discovery 2012 BO11 (MPEC) and earlier with follow-up in today's DOU MPEC for 2012 AP10. This report was previously updated at 0059 and 1553 UTC.

Notes: Ten LD has no astronomical significance but is a useful reporting boundary. Distances are interpreted by A/CC from JPL Horizons data. "LD*" indicates some passage uncertainty. See also today's timeline plus current additional details, sky chart, and ephemerides.

NEOCP Activity on 20 January '12

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, 25 were "one nighters." So far The Tracking News has counted a total of 54 listings on the NEOCP today.

New MPECs on 20 January '12

Minor Planet Electronic Circulars

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

MPEC 2012-B22 time-stamped "06:04 UT" - Daily Orbit Update - see below
MPEC 2012-B23 time-stamped "17:34 UT" - Observations and Orbits of Comets - see below
MPEC 2012-B24 time-stamped "21:15 UT" - 2012 BF11 - see below
MPEC 2012-B25 time-stamped "21:17 UT" - 2012 BG11 - see below
MPEC 2012-B26 time-stamped "21:22 UT" - 2012 BJ11 - see below
MPEC 2012-B27 time-stamped "21:25 UT" - 2012 BK11 - see below
MPEC 2012-B28 time-stamped "21:28 UT" - 2012 BL11 - see below
MPEC 2012-B29 time-stamped "21:30 UT" - 2012 BM11 - see below
MPEC 2012-B30 time-stamped "21:32 UT" - 2012 BN11 - see below
MPEC 2012-B31 time-stamped "21:34 UT" - 2012 BO11

MPEC 2012-B31 - "21:34 UT" - 2012 BO11

K12B11O 2012 BO11 (Earth MOID=0.6 LD, i=0.4°, H=25.5 ~27m, close passer) from the Catalina Sky Survey (CSS) (Jan. 19.49-53p8 & 20.47-48p4)

MPEC 2012-B30 - "21:32 UT" - 2012 BN11

K12B11N 2012 BN11 (risk-listed, Earth MOID=8.9 LD, i=4.1°, H=21.1 ~204m) from Pan-STARRS 1 (PS1) (Jan. 19.47-50p3), the Spacewatch 0.9m telescope (Jan. 19.50-53p3), Magdalena Ridge Obs. (MRO) (Jan. 20.35-38p4), and Astronomical Research Obs. Westfield (Jan. 20.35-36p3)

MPEC 2012-B29 - "21:30 UT" - 2012 BM11

K12B11M 2012 BM11 (small asteroid, H=23.1 ~81m) from CSS (Jan. 19.46-54p12), ARO Westfield (Jan. 20.34p4), MRO (Jan. 20.36-38p4), and Sandlot Obs. (Jan. 20.41-43p4)

MPEC 2012-B28 - "21:28 UT" - 2012 BL11

K12B11L 2012 BL11 (small asteroid, H=25.8 ~23m) from PS1 (Jan. 19.46-51p3 at w=22.0-22.4), the Spacewatch 1.8m telescope (Jan. 20.34p2), and the Mt. Lemmon Survey (MLS) (Jan. 20.51-52p4)

MPEC 2012-B27 - "21:25 UT" - 2012 BK11

K12B11K 2012 BK11 (risk-listed, H=23.1 ~81m) from PS1 (Jan. 19.46-51p4 at w=22.2-6), MLS (Jan. 20.52p4 at V=21.1-22.1), and Tim Lister via Faulkes Telescope North (Jan. 20.55-56p6)

MPEC 2012-B26 - "21:22 UT" - 2012 BJ11

K12B11J 2012 BJ11 (borderline-small, H=21.9 ~141m) from CSS (Jan. 19.31-33p3, 19.38-40p4 & 20.37p4), Spacewatch 1.8m (Jan. 19.38p3), Raheny Obs. (Jan. 19.95-97p3), Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) (Jan. 20.16-17p3), and Sabino Canyon Obs. (Jan. 20.26-27p2)

MPEC 2012-B25 - "21:17 UT" - 2012 BG11

K12B11G 2012 BG11 (small asteroid, H=22.3 ~117m) from LINEAR (Jan. 19.21-26p5) and MLS (Jan. 20.25p2)

MPEC 2012-B24 - "21:15 UT" - 2012 BF11

K12B11F 2012 BF11 (borderline-small, H=21.8 ~148m) from MLS (Jan. 19.16-19p4, 19.24p4 & 20.18p4) and Spacewatch 1.8m (Jan. 19.24-25p3)

<< OOC on 20 Jan. '12 >> MPEC 2012-B23 - "17:34 UT" - Observations and Orbits of Comets

CK12A020 C/2012 A2 (LINEAR) (i=126.0°, q=3.479 AU, TP=2012 Nov. 9.31130 TT) from MASTER-II Obs. (Jan. 15.94-97p2 & 16.69p1), LINEAR (Jan. 17.47-53p5), Bisei Spaceguard Center (Jan. 17.72p7), Farra d'Isonzo Obs. (Jan. 17.89-92p3), San Marcello Pistoiese Obs. (Jan. 17.94p2), Siegen Obs. (Jan. 17.95-99p4), Valdicerro Obs. (Jan. 17.97-02p5), Crni Vrh Obs. (Jan. 18.11-12p10), Sendai Obs. (Jan. 18.74-75p2), and Cordell-Lorenz Obs. (Jan. 19.45-47p2)
CK12A010 C/2012 A1 (Panstarrs) (i=120.8°, q=7.574 AU, TP=2013 Dec. 5.09265 TT) from Hidetaka Sato via RAS Obs. Mayhill (Jan. 14.20-21p3), Geisei Obs. (Jan. 14.54-55p3), and Montcabre Obs. (Jan. 17.99-03p2 & 18.07p1)
CK11Y030 C/2011 Y3 (Boattini) (Centaur, q=3.495 AU, Q=19.946 AU, TP=2011 Aug. 26.53735 TT) from Sato/RAS Mayhill (Jan. 14.18-19p3) and San Marcello Pistoiese Obs. (Jan. 17.87-90p2)
PK11Y020 P/2011 Y2 (Boattini) (q=1.787 AU, Q=10.655 AU, TP=2012 Mar. 21.69132 TT) from Sato/RAS Mayhill (Jan. 12.07-08p4) and Buchloe Obs. (Jan. 15.78-79p3)
PK11W020 P/2011 W2 (Rinner) (q=2.303 AU, Q=5.295 AU, TP=2011 Nov. 6.19611 TT) from Kiev Comet Station (Dec. 7.08-11p2 & 28.99p10), Geisei Obs. (Dec. 27.72-73p2 & 30.73-74p2), Schiaparelli Obs. (Jan. 12.94-95p2), Kevin Hills via RAS Obs. Moorook (Jan. 13.69-70p3), Haute Provence Obs. (Jan. 13.87-90p5, 14.91-95p6 & 17.88-89p2), CAST Obs. (Jan. 14.92-93p2), Brixiis Obs. (Jan. 14.92-94p9 & 17.89-90p5), Montcabre Obs. (Jan. 14.96-97p3), Frasso Sabino Obs. (Jan. 15.89-90p4), Olmen Obs. (Jan. 15.93p1 & 15.98-99p2), Oukaimeden Obs. (Jan. 16.06-09p3), Castelmartini Obs. (Jan. 16.06-07p3 & 17.99p3), Murrumbateman Obs. (Jan. 16.56p2 & 17.53p2), Moriyama Obs. (Jan. 17.59p2), Nazaret Obs. (Jan. 19.03-08p3), and Petit Jean Mtn. South Obs. (PJMSO) (Jan. 19.34-35p6)
CK11UU5F C/2011 UF305 (LINEAR) (i=94.0°, q=2.138 AU, TP=2012 July 22.16289 TT) from Kurihara Obs. (Jan. 18.85p3)
PK11UD4A P/2011 UA134 (Spacewatch-Panstarrs) (q=2.051 AU, Q=9.115 AU, TP=2011 Dec. 7.20077 TT) from Ageo Obs. (Dec. 24.53-54p2)
PK11U020 P/2011 U2 (Bressi) (q=4.837 AU, Q=6.044 AU, TP=2012 May 7.72335 TT) from Ageo Obs. (Dec. 24.58-59p2)
CK11S020 C/2011 S2 (Kowalski) (Centaur, q=1.115 AU, Q=31.466 AU, TP=2011 Oct. 26.34708 TT) from Sato/RAS Mayhill (Dec. 28.53p2) and Geisei Obs. (Dec. 30.82-83p3)
PK11R030 P/2011 R3 (Novichonok-Gerke) (q=3.558 AU, Q=6.151 AU, TP=2012 Apr. 2.99446 TT) from Hills/RAS Moorook (Jan. 14.52-54p3)
CK11R010 C/2011 R1 (McNaught) (i=116.2°, q=2.080 AU, TP=2012 Oct. 19.61878 TT) from Hills/RAS Moorook (Dec. 30.61-62p3 & Jan. 15.56-57p3), Los Campitos Obs. (Jan. 14.07-09p4 & 17.10-11p3), and Moriyama Obs. (Jan. 17.40-41p2)
CK11Q040 C/2011 Q4 (SWAN) (i=147.8°, q=1.112 AU, Q=84.837 AU, TP=2011 Sept. 21.08303 TT) from Castelmartini Obs. (Jan. 12.17-18p3 & 18.13-14p3)
PK11N010 P/2011 N1 (ASH) (q=2.858 AU, Q=9.748 AU, TP=2012 May 31.08567 TT) from Hills/RAS Moorook (Dec. 30.59-60p3 & Jan. 16.53-54p3) and IAA-AI Atacama (Jan. 18.04-07p8)
CK11L040 C/2011 L4 (Panstarrs) (i=84.2°, q=0.302 AU, TP=2013 Mar. 10.18748 TT) from Kurihara Obs. (Jan. 13.86p4) and TRAPPIST (Jan. 17.36-37p4)
CK11L020 C/2011 L2 (McNaught) (i=104.3°, q=1.943 AU, TP=2011 Nov. 1.27614 TT) from Murrumbateman Obs. (Jan. 16.58-59p2)
CK11J020 C/2011 J2 (LINEAR) (i=122.8°, q=3.444 AU, TP=2013 Dec. 25.36208 TT) from Ageo Obs. (Dec. 25.77-78p2) and LINEAR (Jan. 19.46-52p5)
CK11G010 C/2011 G1 (McNaught) (i=162.2°, q=2.155 AU, TP=2011 Sept. 16.41363 TT) from Kiev Comet Sta. (Dec. 29.07-08p8), CAST Obs. (Jan. 14.91p2), Olmen Obs. (Jan. 15.85-88p3), San Marcello Pistoiese Obs. (Jan. 15.92-93p3), Bedoin Obs. (Jan. 16.95p2), Moriyama Obs. (Jan. 17.57p2), Brixiis Obs. (Jan. 17.86-87p7), Castelmartini Obs. (Jan. 17.92-93p3), PJMSO (Jan. 18.34-35p6), and CSS (Jan. 19.22-23p4)
CK11F010 C/2011 F1 (LINEAR) (i=56.6°, q=1.819 AU, TP=2013 Jan. 8.00378 TT) from Castelmartini Obs. (Jan. 12.14p3 & 18.08p3), Schiaparelli Obs. (Jan. 12.20-23p2), Betelgeuse Station (Jan. 14.16p3), Brixiis Obs. (Jan. 15.03-04p9), Olmen Obs. (Jan. 16.02-04p3), Bedoin Obs. (Jan. 17.14-15p3), Vallauris Obs. (Jan. 17.19-22p3), and Cielo Profundo Obs. (Jan. 17.23-27p3)
CK10S010 C/2010 S1 (LINEAR) (i=125.3°, q=5.900 AU, TP=2013 May 20.32036 TT) from Ageo Obs. (Dec. 4.52-53p2), Castelmartini Obs. (Jan. 11.71-72p3), Brixiis Obs. (Jan. 12.83-85p10), Betelgeuse Sta. (Jan. 14.76-77p3), Maidbronn Obs. (Jan. 14.82-83p4 & 15.75-76p3), PJMSO (Jan. 15.05-06p4), Buchloe Obs. (Jan. 15.74p2), Tarbatness Obs. (Jan. 16.78-79p2), Olmen Obs. (Jan. 16.79-82p3), and Rodeno Obs. (Jan. 18.78-79p3)
CK10R010 C/2010 R1 (LINEAR) (i=156.9°, q=5.621 AU, TP=2012 May 18.90232 TT) from Kurihara Obs. (Jan. 13.84p3) and Olmen Obs. (Jan. 17.25-26p3)
PK10J81C P/2010 JC81 (WISE) (i=38.7°, q=1.811 AU, Q=14.471 AU, TP=2011 Apr. 26.56223 TT) from Castelmartini Obs. (Jan. 12.13p3 & 18.06-07p3), LINEAR (Jan. 13.38-42p4 & 14.46-51p5), Olmen Obs. (Jan. 15.99-02p3), and Bedoin Obs. (Jan. 17.04-05p3)
CK10G020 C/2010 G2 (Hill) (i=103.7°, q=1.981 AU, Q=190.492 AU, TP=2011 Sept. 2.05247 TT) from Rhozen Obs. (Dec. 24.80-82p15), Kiev Comet Sta. (Dec. 28.86-88p8), Hills/RAS Moorook (Dec. 30.63-64p3 & Jan. 15.58-59p3), Kurihara Obs. (Jan. 9.44p3), Mas des Gres Obs. (Jan. 11.76-77p7), Castelmartini Obs. (Jan. 11.87-88p3, 15.90p3 & 17.84-85p3), Brixiis Obs. (Jan. 12.81-83p11, 14.77-79p10, 16.82-84p9 & 17.77-78p7), Wellinghofen Obs. (Jan. 13.87-89p3), Los Campitos Obs. (Jan. 14.10p3, 15.07-08p3 & 17.12-13p4), Olmen Obs. (Jan. 14.72p2, 14.85p1 & 15.88-91p3), Montcabre Obs. (Jan. 14.76-77p3 & 17.84-85p3), Betelgeuse Sta. (Jan. 14.77-78p3), CAST Obs. (Jan. 14.83p2), Gieres Obs. (Jan. 14.83-88p4), Maidbronn Obs. (Jan. 14.85-87p3, 15.87-88p4 & 16.86-87p3), Monte Deva Obs. (Jan. 14.94-98p4), Buchloe Obs. (Jan. 15.79p4), Corner Obs. (Jan. 15.80-85p3 & 16.83-84p2), Murrumbateman Obs. (Jan. 16.46-50p3), Tarbatness Obs. (Jan. 16.76-77p2), Cielo Profundo Obs. (Jan. 16.80-85p3), Waterlooville Obs. (Jan. 16.85p4), Bedoin Obs. (Jan. 16.86-88p3), Blanquita Obs. (Jan. 17.84-86p3), Vinyols Obs. (Jan. 17.92-99p3), PJMSO (Jan. 18.15-16p6 & 20.10-11p6), Rodeno Obs. (Jan. 18.81-82p3), and LINEAR (Jan. 19.16-18p3)
CK10F87B C/2010 FB87 (WISE-Garradd) (i=107.6°, q=2.843 AU, Q=603.920 AU, TP=2010 Nov. 7.38604 TT) from Ageo Obs. (Dec. 24.64-65p3), Kiev Comet Sta. (Dec. 29.00-02p9), Schiaparelli Obs. (Jan. 13.01p2), and Vallauris Obs. (Jan. 16.87-90p3)
CK10B010 C/2010 B1 (Cardinal) (i=102.0°, q=2.941 AU, Q=5961.068 AU, TP=2011 Feb. 7.08005 TT) from Hills/RAS Moorook (Jan. 13.65-66p3)
PK09SS0K P/2009 SK280 (Spacewatch-Hill) (q=4.199 AU, Q=5.355 AU, TP=2009 May 24.66431 TT) from Ovidiu Vaduvescu via La Palma (Dec. 23.14-15p7)
CK09S030 C/2009 S3 (Lemmon) (i=60.4°, q=6.475 AU, TP=2011 Dec. 11.30736 TT) from Buchloe Obs. (Jan. 15.74p3)
CK09P010 C/2009 P1 (Garradd) (i=106.2°, q=1.551 AU, TP=2011 Dec. 23.67761 TT) from Schiaparelli Obs. (Jan. 12.21-23p2), Kurihara Obs. (Jan. 13.85p2 & 18.83-84p3), Montcabre Obs. (Jan. 14.19-23p3), Brixiis Obs. (Jan. 15.17-21p13), Olmen Obs. (Jan. 17.21-24p3 & 18.18-21p3), and Ernesto Guido via RAS Obs. Mayhill (Jan. 18.49p2)
CK09F040 C/2009 F4 (McNaught) (i=79.3°, q=5.455 AU, TP=2011 Dec. 31.90814 TT) from Kevin Hills via RAS Obs. Victoria (Dec. 30.69-70p3 & Jan. 16.51-52p3), Los Campitos Obs. (Jan. 14.06p2 & 15.10-12p3), Gisborne Obs. (Jan. 15.41p1, 15.47p1 & 15.51p1), and Hills/RAS Moorook (Jan. 15.61-62p3)
CK08Y120 C/2008 Y12 (SOHO) (i=23.4°, q=0.066 AU, TP=2008 Dec. 22.60543 TT) from STEREO-A (2008 Dec. 21.74-13p15)
CK08S030 C/2008 S3 (Boattini) (i=162.7°, q=8.018 AU, TP=2011 June 7.40484 TT) from Kiev Comet Sta. (Dec. 6.82-83p5), Castelmartini Obs. (Jan. 11.79p3), Olmen Obs. (Jan. 15.74-76p3), and Buchloe Obs. (Jan. 15.76p3)
CK08F75K C/2008 FK75 (Lemmon-Siding Spring) (i=61.2°, q=4.511 AU, TP=2010 Sept. 29.25738 TT) from Ageo Obs. (Dec. 4.46-47p2 & 25.49-50p2), Castelmartini Obs. (Jan. 11.73-74p3), Betelgeuse Sta. (Jan. 14.76p2), Olmen Obs. (Jan. 14.81-82p3), PJMSO (Jan. 15.06-08p6), Buchloe Obs. (Jan. 15.73p3), Maidbronn Obs. (Jan. 15.74p3), and CSS (Jan. 19.10-11p4)
0255P 255P/Levy (q=1.007 AU, Q=5.066 AU, TP=2012 Jan. 14.94158 TT) from Kiev Comet Sta. (Dec. 28.78-79p5), Ageo Obs. (Dec. 29.47-49p3), Kurihara Obs. (Jan. 7.45p1 & 9.46-47p2), Sato/RAS Mayhill (Jan. 12.06-07p4), Frasso Sabino Obs. (Jan. 12.78p3), Ka-Dar Obs. TAU Station (Jan. 13.71-72p3), Olmen Obs. (Jan. 13.73-75p3 & 15.79-84p3), CSS (Jan. 14.15-16p3), Betelgeuse Sta. (Jan. 14.78-79p3), CAST Obs. (Jan. 14.79-81p3), Schiaparelli Obs. (Jan. 14.84-85p2), Lumezzane Obs. (Jan. 15.75p4), Maidbronn Obs. (Jan. 15.80-85p3), Castelmartini Obs. (Jan. 15.86-87p3 & 17.78-79p3), Nazaret Obs. (Jan. 15.89-93p3 & 18.90-92p3), Brixiis Obs. (Jan. 17.84-85p4), and PJMSO (Jan. 20.12-13p6)
0253P 253P/Panstarrs from Ageo Obs. (Dec. 17.47-50p2) and Hills/RAS Moorook (Dec. 30.54p2)
0246P 246P/NEAT from Ageo Obs. (Dec. 17.74-75p3), Schiaparelli Obs. (Jan. 12.20-22p2), Hills/RAS Moorook (Jan. 13.71-73p3), Kurihara Obs. (Jan. 13.83p3), and Bedoin Obs. (Jan. 18.06-08p3)
0244P 244P/Scotti from Ageo Obs. (Dec. 17.70-72p3), Castelmartini Obs. (Jan. 11.92p3, 15.96-97p3 & 17.88-89p3), Brixiis Obs. (Jan. 14.94-96p9), Hills/RAS Moorook (Jan. 15.59-61p3), Tarbatness Obs. (Jan. 16.79-80p2), Olmen Obs. (Jan. 16.84-87p3), Cielo Profundo Obs. (Jan. 16.86-89p3), Bedoin Obs. (Jan. 16.90-92p3), LINEAR (Jan. 17.25-28p3), Haute Provence Obs. (Jan. 17.84-87p4), and PJMSO (Jan. 18.19-21p6)
0243P 243P/NEAT from Ageo Obs. (Dec. 25.70-72p2) and MLS (Jan. 18.15-17p4)
0242P 242P/Spahr from Ageo Obs. (Dec. 25.54-57p2), Hills/RAS Moorook (Dec. 30.64-66p3 & Jan. 16.57-59p3), CAST Obs. (Jan. 14.84p2), Buchloe Obs. (Jan. 15.79-80p3), Moriyama Obs. (Jan. 17.49p2), Brixiis Obs. (Jan. 17.82-83p5), Bedoin Obs. (Jan. 17.84-85p3), and PJMSO (Jan. 20.13-14p6)
0240P 240P/NEAT from Ageo Obs. (Dec. 17.85-86p2)
0213P 213P/Van Ness from Ageo Obs. (Dec. 17.52-54p2), Castelmartini Obs. (Jan. 11.78p3, 15.73-74p3 & 17.73p3), CSS (Jan. 14.07-09p4), PJMSO (Jan. 15.08-09p5), Buchloe Obs. (Jan. 15.76p3), and Olmen Obs. (Jan. 16.82-83p3)
0176P 176P/LINEAR from Maidbronn Obs. (Jan. 14.88p1 & 14.93-94p2) and Hills/RAS Moorook (Jan. 16.55-56p2)
0164P 164P/Christensen from Kiev Comet Sta. (Dec. 29.09-11p12), Castelmartini Obs. (Jan. 12.11-12p3 & 18.05p3), Hills/RAS Moorook (Jan. 13.74-76p3), Brixiis Obs. (Jan. 15.01-02p4), Olmen Obs. (Jan. 15.95-98p3), Bedoin Obs. (Jan. 16.98-99p3), Vallauris Obs. (Jan. 17.02-07p3), Moriyama Obs. (Jan. 17.62p2), and Nazaret Obs. (Jan. 19.09-16p3)
0130P 130P/McNaught-Hughes (q=2.098 AU, Q=4.974 AU, TP=2011 June 24.77640 TT) from Hills/RAS Moorook (Jan. 14.48-49p3) and Buchloe Obs. (Jan. 15.75p2)
0123P 123P/West-Hartley from Hills/RAS Moorook (Jan. 16.73-74p3)
0117P 117P/Helin-Roman-Alu 1 from Hills/RAS Moorook (Jan. 14.76-77p2 & 15.71-73p3) and Bedoin Obs. (Jan. 17.02-03p2)
0097P 97P/Metcalf-Brewington from Hills/RAS Moorook (Dec. 30.70-71p2), Haute Provence Obs. (Jan. 14.85-88p2), Murrumbateman Obs. (Jan. 16.52p2), and San Marcello Pistoiese Obs. (Jan. 17.84-87p2)
0091P 91P/Russell 3 from Murrumbateman Obs. (Jan. 17.60-62p2)
0078P 78P/Gehrels 2 from Rhozen Obs. (Dec. 24.76-79p14), Kiev Comet Sta. (Dec. 28.80-81p14), Castelmartini Obs. (Jan. 11.80p3, 15.83-84p3 & 17.76p3), Brixiis Obs. (Jan. 12.77-80p6, 14.87-89p10 & 16.80-82p10), Olmen Obs. (Jan. 13.76-78p3 & 15.77-79p3), Stixendorf Obs. (Jan. 14.72-73p5), Betelgeuse Sta. (Jan. 14.75-76p3), Gieres Obs. (Jan. 14.76-82p4), CAST Obs. (Jan. 14.77-78p2), Monte Deva Obs. (Jan. 14.86-87p5), PJMSO (Jan. 15.04-05p6 & 20.11-12p6), Lumezzane Obs. (Jan. 15.76p4), Maidbronn Obs. (Jan. 15.77-78p3), Hills/RAS Moorook (Jan. 16.46-47p3), Bedoin Obs. (Jan. 16.75-76p3), Corner Obs. (Jan. 16.79-80p2), Tarbatness Obs. (Jan. 16.81p2), Waterlooville Obs. (Jan. 16.82-83p8), Moriyama Obs. (Jan. 17.46-47p2), Blanquita Obs. (Jan. 17.82-84p3), Vallauris Obs. (Jan. 18.75-77p3), and Rodeno Obs. (Jan. 18.80p3)
0065P 65P/Gunn from Castelmartini Obs. (Jan. 11.83-84p3 & 17.80-81p3), CAST Obs. (Jan. 14.80-82p3), and Hills/RAS Moorook (Jan. 16.48-50p3)
0049P 49P/Arend-Rigaux from Kiev Comet Sta. (Dec. 29.12-13p7), Castelmartini Obs. (Jan. 12.15p3 & 18.10p3), Oukaimeden Obs. (Jan. 13.21-25p4), Hills/RAS Moorook (Jan. 13.76-77p3), Betelgeuse Sta. (Jan. 14.17p3), Vicksburg Obs. (Jan. 15.46-48p3 & 18.43-46p4), Bedoin Obs. (Jan. 17.06-07p3), Vallauris Obs. (Jan. 17.08-11p4), Cielo Profundo Obs. (Jan. 17.12-16p3), Olmen Obs. (Jan. 17.12p1 & 17.20-21p2), and Grove Creek Obs. (Jan. 19.69-70p2)
0048P 48P/Johnson from Ageo Obs. (Dec. 4.36p2), Kiev Comet Sta. (Dec. 6.72-73p4), and Hills/RAS Moorook (Jan. 14.46-47p3)
0045P 45P/Honda-Mrkos-Pajdusakova from MLS (Jan. 19.52-54p4)
0029P 29P/Schwassmann-Wachmann 1 from Schiaparelli Obs. (Jan. 12.19-21p2), Kurihara Obs. (Jan. 13.81-82p3), Olmen Obs. (Jan. 17.16-19p3), Cielo Profundo Obs. (Jan. 17.18-20p3), Vallauris Obs. (Jan. 18.15-21p3), Vicksburg Obs. (Jan. 18.47-50p4), and Nazaret Obs. (Jan. 19.16-22p3)
0021P 21P/Giacobini-Zinner from Ageo Obs. (Dec. 4.38p2), Oukaimeden Obs. (Jan. 13.79p3), Stixendorf Obs. (Jan. 14.70-71p6), Olmen Obs. (Jan. 14.72-74p3, 15.71-74p3 & 19.71-73p3), Castelmartini Obs. (Jan. 16.72p3 & 17.71-72p3), Vallauris Obs. (Jan. 18.73-74p3), and San Marcello Pistoiese Obs. (Jan. 18.74-75p2)

<< DOU on 20 Jan. '12 >> MPEC 2012-B22 - "06:04 UT" - Daily Orbit Update

Observations of risk-listed objects
K12A10P 2012 AP10 (small asteroid, arc=9 days, H=26.4 ~18m, close passer) from Lister/Faulkes North (Jan. 19.33-34p3) and Spacewatch 1.8m (Jan. 20.20-21p3)
Observation campaigns (radar support, potential mission destinations)
K02B25F 2002 BF25 (arc=3 opp, H=22.3 ~117m, PMD) from Lumezzane Obs. (Jan. 15.83p2)
K02A00W 2002 AW (arc=3 opp, H=20.7 ~245m, PMD) from PS1 (Jan. 19.46-51p4)
J2642 192642 1999 RD32 (radar) from Desert Moon Obs. (Jan. 19.41-42p5)
H5706 175706 1996 FG3 (PMD) from New Millennium Obs. (Jan. 11.90p2 & 11.94p2) and Montevenere Obs. (Jan. 17.93-94p2 & 18.89-91p2)
E1018 141018 2001 WC47 (PMD, radar) from PS1 (Jan. 19.44-46p2 & 19.59p1)
D8175 138175 2000 EE104 (PMD) from CSS (Jan. 19.36-37p3)
29075 29075 1950 DA (radar) from Lumezzane Obs. (Jan. 15.99p4) and CSS (Jan. 19.20-21p4)
-- Potential mission destinations list & ephemerides -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K12B01Z 2012 BZ1 (i=37.2°, arc=1 day, H=23.8 ~59m) from LINEAR (Jan. 19.40-44p4)
K12A03C 2012 AC3 (arc=14 days, H=22.9 ~89m) from Lumezzane Obs. (Jan. 15.96-97p3)
K11Y63M 2011 YM63 (arc=19 days, H=22.2 ~123m) from Spacewatch 0.9m (Jan. 19.36-40p3) and CSS (Jan. 19.49-51p3)
K11Y28Z 2011 YZ28 (arc=21 days, H=22.5 ~107m) from Spacewatch 1.8m (Jan. 19.46p3)
K11Y00C 2011 YC (arc=10 days, H=24.6 ~41m) from Vaduvescu/La Palma (Dec. 23.27-28p7)
Observations of other asteroidal objects
K12B02B 2012 BB2 (arc=3 days, H=20.6 ~257m) from DGRO-RH (Jan. 18.15p3) and LINEAR (Jan. 19.22-26p4)
K12A10U 2012 AU10 (i=39.1°, arc=8 days, H=18.1 ~812m) from Desert Moon Obs. (Jan. 19.43-47p3)
K12A01E 2012 AE1 (arc=18 days, H=19.0 ~537m) from Lumezzane Obs. (Jan. 16.00-01p4) and PJMSO (Jan. 19.36-37p6)
K11Y28G 2011 YG28 (Q=4.528 AU, arc=23 days, H=21.4 ~178m) from Desert Moon Obs. (Jan. 19.36-39p3)
K11Y15V 2011 YV15 (Q=4.394 AU, arc=3 opp, H=17.1 ~1.29 km) from CSS (2007 April 15.13-15p4)
K11X03O 2011 XO3 (Q=5.386 AU, arc=48 days, H=16.7 ~1.55 km) from Lumezzane Obs. (Jan. 15.87p4)
K11X01E 2011 XE1 (arc=47 days, H=18.1 ~812m) from LINEAR (Jan. 19.27-33p5)
K11WD4V 2011 WV134 (Q=4.676 AU, arc=2 opp, H=17.1 ~1.29 km) from New Millennium Obs. (Jan. 11.88p2 & 11.93p2) and Lumezzane Obs. (Jan. 15.85-86p4)
K11SA2L 2011 SL102 (arc=3 opp, H=18.2 ~776m) from New Millennium Obs. (Jan. 11.90p2 & 11.95p2)
K11O15R 2011 OR15 (arc=177 days, H=21.2 ~195m) from PS1 (Jan. 19.48-52p4)
K06V13Y 2006 VY13 (Q=4.718 AU, arc=2 opp, H=17.3 ~1.17 km) from LINEAR (Jan. 19.50-52p3)
K06M10J 2006 MJ10 (i=39.3°, arc=4 opp, H=18.7 ~616m) from Lumezzane Obs. (Jan. 15.97-98p4), CSS (Jan. 19.20-21p4), and PJMSO (Jan. 19.35-36p5)
K05Y00S 2005 YS (q=0.320 AU, arc=3 opp, H=19.6 ~407m) from CSS (Jan. 19.15-16p4)
K05EM4E 2005 EE224 (arc=4 opp, H=19.8 ~371m) from Spacewatch 1.8m (Jan. 19.50-51p3)
K05A14H 2005 AH14 (arc=4 opp, H=17.2 ~1.23 km) from Desert Moon Obs. (Jan. 19.50-54p3)
K04Q17B 2004 QB17 (arc=3 opp, H=18.5 ~676m) from CSS (Jan. 19.12-14p4)
K03B47K 2003 BK47 (Q=4.682 AU, arc=3 opp, H=17.9 ~891m) from ISON-NM Obs. (Jan. 19.33-37p4)
K03A23F 2003 AF23 (arc=2 opp, H=20.9 ~224m) from LINEAR (Jan. 19.21-27p4)
K02A11N 2002 AN11 (arc=3 opp, H=18.2 ~776m) from LINEAR (Jan. 19.34-39p4)
J96A02E 1996 AE2 (i=37.4°, arc=2 opp, H=20.3 ~295m) from CSS (Jan. 19.36-37p4) and PJMSO (Jan. 19.40-41p6)
V1555 311555 2006 BA148 from Lumezzane Obs. (Jan. 15.98p4) and CSS (Jan. 19.18-19p4)
V1044 311044 2004 BB103 from Lumezzane Obs. (Jan. 15.81p4)
V0737 310737 2002 QG24 from Spacewatch 0.9m (Jan. 19.18-22p3)
U5090 305090 2007 VQ4 from CSS (Jan. 19.12-14p4)
S9315 289315 2005 AN26 from Lumezzane Obs. (Jan. 15.99p4)
S5625 285625 2000 RD34 from CSS (Jan. 19.15-16p4)
R5714 275714 2000 YH4 from ISON-NM Obs. (Jan. 19.11-12p2) and CSS (Jan. 19.18-19p4)
K4232 204232 2004 DG2 from CSS (Jan. 19.24-25p4)
K2435 202435 2005 XH8 from New Millennium Obs. (Jan. 11.89-94p6)
H2034 172034 2001 WR1 from CSS (Jan. 19.07-09p4)
G8378 168378 1997 ET30 from MLS (Jan. 19.25-28p4)
G3696 163696 2003 EB50 from Lumezzane Obs. (Jan. 15.80p4)
F4269 154269 2002 SM from CSS (Jan. 19.41-42p3)
F3951 153951 2002 AC3 from PS1 (Jan. 19.43-44p2 & 19.58-59p2)
E1531 141531 2002 GB from MLS (Jan. 19.55-56p3)
D8524 138524 2000 OJ8 from LINEAR (Jan. 19.34-39p5) and PJMSO (Jan. 19.41-43p5)
D8013 138013 2000 CN101 from LINEAR (Jan. 19.34-39p5)
99799 99799 2002 LJ3 from PS1 (Jan. 19.29-32p3)
90147 90147 2002 YK14 from Lumezzane Obs. (Jan. 15.81-82p4)
66959 66959 1999 XO35 from CSS (Jan. 19.12-13p3)
66251 66251 1999 GJ2 from LINEAR (Jan. 19.34-39p5)
39796 39796 1997 TD from Lumezzane Obs. (Jan. 15.99p2)
37336 37336 2001 RM from LINEAR (Jan. 19.08-13p4)
32906 32906 1994 RH from CSS (Jan. 19.26-28p4)
12923 12923 Zephyr (1999 GK4) from ISON-NM Obs. (Jan. 19.33-38p4)
10145 10145 1994 CK1 from Montevenere Obs. (Jan. 17.99p2 & 18.97-98p2)
08567 8567 1996 HW1 from New Millennium Obs. (Jan. 11.91p2 & 11.96p2)
04055 4055 Magellan (1985 DO2) from LINEAR (Jan. 19.41-46p5)
03200 3200 Phaethon (1983 TB) from CSS (Jan. 19.15-16p4)
03103 3103 Eger (1982 BB) from CSS (Jan. 19.49-51p4)
02062 2062 Aten (1976 AA) from Lumezzane Obs. (Jan. 15.79p4) and LINEAR (Jan. 19.08-13p5)
01620 1620 Geographos (1951 RA) from New Millennium Obs. (Jan. 11.91p2 & 11.95p2)
01036 1036 Ganymed (1924 TD) from LINEAR (Jan. 19.14-20p5)
00719 719 Albert (1911 MT) from PS1 (Jan. 19.47-52p4) and Spacewatch 0.9m (Jan. 19.49-53p3)

Observers on 20 January '12

A total of 74 observers appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 16 in MPEC 2012-B23 -- P/2011 UA134, P/2011 U2, C/2011 J2, C/2010 S1, C/2010 FB87, C/2008 FK75, 255P, 253P, 246P, 244P, 243P, 242P, 240P, 213P, 48P, 21P
`H21`	Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2012-B29 & 2012-B30 -- 2012 BN11, 2012 BM11
`132`	Bedoin Obs. in France, 11 in MPEC 2012-B23 -- C/2011 G1, C/2011 F1, P/2010 JC81, C/2010 G2, 246P, 244P, 242P, 164P, 117P, 78P, 49P
`B75`	Betelgeuse Station in Italy, 7 in MPEC 2012-B23 -- C/2011 F1, C/2010 S1, C/2010 G2, C/2008 FK75, 255P, 78P, 49P
`300`	Bisei Spaceguard Center in Japan, 1 in MPEC 2012-B23 -- C/2012 A2
`I99`	Blanquita Obs. in Spain, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
`B96`	Brixiis Obs. in Belgium, 11 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2011 F1, C/2010 S1, C/2010 G2, C/2009 P1, 255P, 244P, 242P, 164P, 78P
`215`	Buchloe Obs. in Germany, 9 in MPEC 2012-B23 -- P/2011 Y2, C/2010 S1, C/2010 G2, C/2009 S3, C/2008 S3, C/2008 FK75, 242P, 213P, 130P
`235`	CAST Obs. in Italy, 7 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2010 G2, 255P, 242P, 78P, 65P
`160`	Castelmartini Obs. in Italy, 17 in MPEC 2012-B23 -- P/2011 W2, C/2011 Q4, C/2011 G1, C/2011 F1, C/2010 S1, P/2010 JC81, C/2010 G2, C/2008 S3, C/2008 FK75, 255P, 244P, 213P, 164P, 78P, 65P, 49P, 21P
`703`	Catalina Sky Survey (CSS) in Arizona, 26 in MPECs 2012-B22, 2012-B23, 2012-B26, 2012-B29 & 2012-B31 -- 2012 BO11, 2012 BM11, 2012 BJ11, 2011 YV15, 2011 YM63, C/2011 G1, C/2008 FK75, 2006 MJ10, 2005 YS, 2004 QB17, 1996 AE2, 66959, 32906, 311555, 305090, 29075, 285625, 275714, 204232, 172034, 154269, 138175, 3200, 3103, 255P, 213P
`J01`	Cielo Profundo Obs. in Spain, 5 in MPEC 2012-B23 -- C/2011 F1, C/2010 G2, 244P, 49P, 29P
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2012-B23 -- C/2012 A2
`B50`	Corner Obs. in Germany, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
`106`	Crni Vrh Obs. in Slovenia, 1 in MPEC 2012-B23 -- C/2012 A2
`448`	Desert Moon Obs. in New Mexico, 4 in MPEC 2012-B22 -- 2012 AU10, 2011 YG28, 2005 AH14, 192642
`G48`	Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPECs 2012-B22 & 2012-B26 -- 2012 BJ11, 2012 BB2
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-B23 -- C/2012 A2
`F65%`	Tim Lister in southern California via Faulkes Telescope North in Hawaii, 2 in MPECs 2012-B22 & 2012-B27 -- 2012 BK11, 2012 AP10
`157`	Frasso Sabino Obs. in Italy, 2 in MPEC 2012-B23 -- P/2011 W2, 255P
`372`	Geisei Obs. in Japan, 3 in MPEC 2012-B23 -- C/2012 A1, P/2011 W2, C/2011 S2
`B83`	Gieres Obs. in France, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
`E94`	Gisborne Obs. in New Zealand, 1 in MPEC 2012-B23 -- C/2009 F4
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2012-B23 -- 49P
`511`	Haute Provence Obs. in Germany, 3 in MPEC 2012-B23 -- P/2011 W2, 244P, 97P
`I16`	IAA-AI Atacama in Chile, 1 in MPEC 2012-B23 -- P/2011 N1
`H15`	ISON-NM Obs. in New Mexico, 3 in MPEC 2012-B22 -- 2003 BK47, 275714, 12923
`C32`	Ka-Dar Obs. TAU Station in Russia, 1 in MPEC 2012-B23 -- 255P
`585`	Kiev Comet Station in the Ukraine, 10 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2010 G2, C/2010 FB87, C/2008 S3, 255P, 164P, 78P, 49P, 48P
`D95`	Kurihara Obs. in Japan, 8 in MPEC 2012-B23 -- C/2011 UF305, C/2011 L4, C/2010 R1, C/2010 G2, C/2009 P1, 255P, 246P, 29P
`704`	LINEAR in New Mexico, 19 in MPECs 2012-B22, 2012-B23 & 2012-B25 -- 2012 BZ1, 2012 BG11, 2012 BB2, C/2012 A2, 2011 XE1, C/2011 J2, P/2010 JC81, C/2010 G2, 2006 VY13, 2003 AF23, 2002 AN11, 66251, 37336, 138524, 138013, 4055, 2062, 1036, 244P
`950.`	Ovidiu Vaduvescu via La Palma in the Canary Islands, 2 in MPECs 2012-B22 & 2012-B23 -- 2011 YC, P/2009 SK280
`I36`	Los Campitos Obs. in Argentina, 3 in MPEC 2012-B23 -- C/2011 R1, C/2010 G2, C/2009 F4
`130`	Lumezzane Obs. in Italy, 16 in MPECs 2012-B22 & 2012-B23 -- 2012 AE1, 2012 AC3, 2011 XO3, 2011 WV134, 2006 MJ10, 2002 BF25, 90147, 39796, 311555, 311044, 29075, 289315, 163696, 2062, 255P, 78P
`C94`	MASTER-II Obs., 1 in MPEC 2012-B23 -- C/2012 A2
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2012-B29 & 2012-B30 -- 2012 BN11, 2012 BM11
`B82`	Maidbronn Obs. in Germany, 6 in MPEC 2012-B23 -- C/2010 S1, C/2010 G2, C/2008 FK75, 255P, 176P, 78P
`B10`	Mas des Gres Obs., 1 in MPEC 2012-B23 -- C/2010 G2
`213`	Montcabre Obs. in Spain, 4 in MPEC 2012-B23 -- C/2012 A1, P/2011 W2, C/2010 G2, C/2009 P1
`945`	Monte Deva Obs. in Spain, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
`C91`	Montevenere Obs., 2 in MPEC 2012-B22 -- 175706, 10145
`900`	Moriyama Obs. in Japan, 6 in MPEC 2012-B23 -- P/2011 W2, C/2011 R1, C/2011 G1, 242P, 164P, 78P
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2012-B22, 2012-B23, 2012-B24, 2012-B25, 2012-B27 & 2012-B28 -- 2012 BL11, 2012 BK11, 2012 BG11, 2012 BF11, 168378, 141531, 243P, 45P
`E07`	Murrumbateman Obs. in New South Wales, 5 in MPEC 2012-B23 -- P/2011 W2, C/2011 L2, C/2010 G2, 97P, 91P
`J47`	Nazaret Obs. in Spain, 4 in MPEC 2012-B23 -- P/2011 W2, 255P, 164P, 29P
`A24`	New Millennium Obs. in Italy, 6 in MPEC 2012-B22 -- 2011 WV134, 2011 SL102, 202435, 175706, 8567, 1620
`C23`	Olmen Obs. in Belgium, 18 in MPEC 2012-B23 -- P/2011 W2, C/2011 G1, C/2011 F1, C/2010 S1, C/2010 R1, P/2010 JC81, C/2010 G2, C/2009 P1, C/2008 S3, C/2008 FK75, 255P, 244P, 213P, 164P, 78P, 49P, 29P, 21P
`J43`	Oukaimeden Obs. in Morocco, 3 in MPEC 2012-B23 -- P/2011 W2, 49P, 21P
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2012-B22, 2012-B27, 2012-B28 & 2012-B30 -- 2012 BN11, 2012 BL11, 2012 BK11, 2011 OR15, 2002 AW, 99799, 153951, 141018, 719
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPECs 2012-B22 & 2012-B23 -- 2012 AE1, P/2011 W2, C/2011 G1, C/2010 S1, C/2010 G2, C/2008 FK75, 2006 MJ10, 1996 AE2, 138524, 255P, 244P, 242P, 213P, 78P
`H06%`	Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-B23 -- C/2009 P1
`H06\|`	Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 5 in MPEC 2012-B23 -- C/2012 A1, C/2011 Y3, P/2011 Y2, C/2011 S2, 255P
D90`	Kevin Hills in England via RAS Obs. Moorook in South Australia, 21 in MPEC 2012-B23 -- P/2011 W2, P/2011 R3, C/2011 R1, P/2011 N1, C/2010 G2, C/2010 B1, C/2009 F4, 253P, 246P, 244P, 242P, 176P, 164P, 130P, 123P, 117P, 97P, 78P, 65P, 49P, 48P
E03`	Kevin Hills in England via RAS Obs. Victoria in Victoria, 1 in MPEC 2012-B23 -- C/2009 F4
`J41`	Raheny Obs. in Ireland, 1 in MPEC 2012-B26 -- 2012 BJ11
`071`	Rhozen Obs. in Bulgaria, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
`939`	Rodeno Obs. in Spain, 3 in MPEC 2012-B23 -- C/2010 S1, C/2010 G2, 78P
`C49`	STEREO-A in heliocentric orbit leading Earth, 1 in MPEC 2012-B23 -- C/2008 Y12
`854`	Sabino Canyon Obs. in Arizona, 1 in MPEC 2012-B26 -- 2012 BJ11
`104`	San Marcello Pistoiese Obs. in Italy, 5 in MPEC 2012-B23 -- C/2012 A2, C/2011 Y3, C/2011 G1, 97P, 21P
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2012-B29 -- 2012 BM11
`204`	Schiaparelli Obs. in Italy, 7 in MPEC 2012-B23 -- P/2011 W2, C/2011 F1, C/2010 FB87, C/2009 P1, 255P, 246P, 29P
`D93`	Sendai Obs. in Japan, 1 in MPEC 2012-B23 -- C/2012 A2
`510`	Siegen Obs. in Germany, 1 in MPEC 2012-B23 -- C/2012 A2
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2012-B22 & 2012-B30 -- 2012 BN11, 2011 YM63, 310737, 719
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2012-B22, 2012-B24, 2012-B26 & 2012-B28 -- 2012 BL11, 2012 BJ11, 2012 BF11, 2012 AP10, 2011 YZ28, 2005 EE224
`A71`	Stixendorf Obs. in Austria, 2 in MPEC 2012-B23 -- 78P, 21P
`I40`	TRAPPIST in Chile, 1 in MPEC 2012-B23 -- C/2011 L4
`I81`	Tarbatness Obs. in Scotland, 4 in MPEC 2012-B23 -- C/2010 S1, C/2010 G2, 244P, 78P
`C92`	Valdicerro Obs. in Italy, 1 in MPEC 2012-B23 -- C/2012 A2
`B51`	Vallauris Obs. in France, 7 in MPEC 2012-B23 -- C/2011 F1, C/2010 FB87, 164P, 78P, 49P, 29P, 21P
`H47`	Vicksburg Obs. in Mississippi, 2 in MPEC 2012-B23 -- 49P, 29P
`C90`	Vinyols Obs., 1 in MPEC 2012-B23 -- C/2010 G2
`940`	Waterlooville Obs. in England, 2 in MPEC 2012-B23 -- C/2010 G2, 78P
`C28`	Wellinghofen Obs. in Germany, 1 in MPEC 2012-B23 -- C/2010 G2

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 20 January '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 BN11	JPL Sentry	2359	2026-2099	29	2.8e-08	-5.27	-5.76	0	JPL: "Analysis based on 13 observations spanning .90896 days (2012-Jan-19.46782 to 2012-Jan-20.37678)." Diameter approximately 0.230 km. from mean, weighted H=20.8.

2012 BK11	JPL Sentry	2322	2038-2088	5	9.3e-10	-7.90	-8.24	0	JPL: "Analysis based on 14 observations spanning 1.0983 days (2012-Jan-19.45989 to 2012-Jan-20.558222)." Diameter approximately 0.097 km. from mean, weighted H=22.7.

2012 BY1	NEODyS	1517	2019-2089	131	2.07e-06	-6.02	-6.85	0	NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2012-01-18.391 to 2012-01-19.398."
2012 BY1	JPL Sentry	0028	2019-2110	85	1.8e-06	-5.97	-6.70	0	JPL: "Analysis based on 10 observations spanning 1.0070 days (2012-Jan-18.39002 to 2012-Jan-19.39704)." Diameter approximately 0.021 km. from mean, weighted H=26.0.

2012 BU1	NEODyS	1517	2057-2086	3	2.49e-05	-5.95	-6.0	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2012-01-18.322 to 2012-01-19.408."

2012 AP10	JPL Sentry	1517	2069-2111	72	9.5e-05	-5.09	-5.81	0	JPL: "Analysis based on 63 observations spanning 9.1249 days (2012-Jan-11.08359 to 2012-Jan-20.20847)." Diameter approximately 0.018 km. from mean, weighted H=26.4.
2012 AP10	NEODyS	1517	2064-2089	52	8.72e-05	-5.05	-5.7	0	NEODyS: "Based on 57 optical observations (of which 2 are rejected as outliers) from 2012-01-11.084 to 2012-01-19.208."

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 20 January '12

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

2359	Noted that JPL Sentry has posted 2012 BN11 as an impact risk - see above
2354	Updated Traffic Report
2322	Noted that JPL Sentry has posted 2012 BK11 as an impact risk - see above
2218	Grabbed MPEC 2012-B24 - 2012 BF11 - see above Grabbed MPEC 2012-B25 - 2012 BG11 - see above Grabbed MPEC 2012-B26 - 2012 BJ11 - see above Grabbed MPEC 2012-B27 - 2012 BK11 - see above Grabbed MPEC 2012-B28 - 2012 BL11 - see above Grabbed MPEC 2012-B29 - 2012 BM11 - see above Grabbed MPEC 2012-B30 - 2012 BN11 - see above Grabbed MPEC 2012-B31 - 2012 BO11 - see above
1800	Grabbed MPEC 2012-B23 - Observations and Orbits of Comets - see above
1517	Noted that JPL Sentry has updated its 2012 AP10 risk assessment - see above Noted that NEODyS has updated its 2012 AP10 risk assessment - see above Noted that NEODyS has posted 2012 BU1 as an impact risk - see above Noted that NEODyS has posted 2012 BY1 as an impact risk - see above Grabbed MPEC 2012-B22 - Daily Orbit Update - see above
0028	Noted that JPL Sentry has posted 2012 BY1 as an impact risk - see above

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