2012-01-30 Tracking News

Contents on 30 January '12

Traffic Report -- two objects
IAU Minor Planet Center
- NEOCP Activity -- 88 listings
- New MPECs -- eleven MPECs
Observers -- 29 observers
Impact Risk Monitoring -- seven objects
Chronology

Note: These A/CC news pages will update less often and less regularly than usual through Thursday, February 2nd, and possibly later.

Resources:

Consolidated Risk Tables - the CRT page (archive)
Of 436 risk-listed objects, 28 have had news in the last 31 days. Updated at 2126 UTC on 30 Jan.
Earth's Busy Neighborhood close passer EBN Traffic Report
Three objects are known to be within ten LD of Earth today. Updated at 1702 UTC on 29 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 27 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 30 January '12

Two objects reported inside ten LD

Two asteroids are reported flying within ten lunar distances (LD) of Earth today. Intruder 2012 BX34 is departing, traveling from 5.00 to 7.11 LD, and 2012 BD14 comes its closest to Earth on this passage, reaching 5.78 LD at 2210 UTC.

Up next, radar target 2011 CP4 arrives inside ten LD on February 22nd.

This report was updated at 2335 UTC with follow-up in today's DOU MPEC for 2012 BA77, 2012 BX34, 2012 BF27, 2012 BD14, and 2012 BO11.

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

NEOCP Activity on 30 January '12

The MPC's NEO Confirmation Page has 88 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 88 objects listed. Of these, 57 were "one nighters." So far The Tracking News has counted a total of 119 listings on the NEOCP today.

New MPECs on 30 January '12

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2012-B99 time-stamped "06:05 UT" - Daily Orbit Update - see below
MPEC 2012-B100 time-stamped "15:54 UT" - 2012 BX85 - see below
MPEC 2012-B101 time-stamped "16:06 UT" - 1999 AU23 - see below
MPEC 2012-B102 time-stamped "17:01 UT" - 2012 BE86 - see below
MPEC 2012-B103 time-stamped "18:16 UT" - 2012 BF86 - see below
MPEC 2012-B104 time-stamped "18:19 UT" - 2012 BG86 - see below
MPEC 2012-B105 time-stamped "18:23 UT" - 2012 BH86 - see below
MPEC 2012-B106 time-stamped "18:26 UT" - 2012 BJ86 - see below
MPEC 2012-B107 time-stamped "18:29 UT" - 2012 BK86 - see below
MPEC 2012-B108 time-stamped "18:31 UT" - 2012 BL86 - see below
MPEC 2012-B109 time-stamped "18:34 UT" - 2012 BM86

MPEC 2012-B109 - "18:34 UT" - 2012 BM86

K12B86M 2012 BM86 (risk-listed, Earth MOID=6.3 LD, H=21.9 ~141m) from Pan-STARRS 1 (PS1) (Jan. 29.56-59p3), Magdalena Ridge Obs. (MRO) (Jan. 30.34-37p4), and Tim Lister via Faulkes Telescope North (Jan. 30.45-46p5)

MPEC 2012-B108 - "18:31 UT" - 2012 BL86

K12B86L 2012 BL86 (risk-listed, Q=4.091 AU, H=24.0 ~54m) from the Catalina Sky Survey (CSS) (Jan. 29.34-35p3 & 29.40p4), Grasslands Obs. (Jan. 29.40p3), Bisei Spaceguard Center (Jan. 29.44-46p6), MRO (Jan. 29.45-47p4 & 30.23-25p4), St. Pardon de Conques Obs. (Jan. 30.05-07p3), and Astronomical Research Obs. Westfield (Jan. 30.08-09p3)

MPEC 2012-B107 - "18:29 UT" - 2012 BK86

K12B86K 2012 BK86 (borderline-small, H=21.9 ~141m) from the Mt. Lemmon Survey (MLS) (Jan. 29.20-23p4 at V=21.2-22.1), MRO (Jan. 29.24-26p4 & 30.24-27p4), and ARO Westfield (Jan. 30.26-27p3)

MPEC 2012-B106 - "18:26 UT" - 2012 BJ86

K12B86J 2012 BJ86 (risk-listed, Earth MOID=1.3 LD, i=1.3°, H=21.8 ~148m) from MLS (Jan. 29.10-16p8 & 30.15p4), MRO (Jan. 29.15-17p4, 29.24-27p3 & 30.12-14p4), and ARO Westfield (Jan. 30.02-03p3)

MPEC 2012-B105 - "18:23 UT" - 2012 BH86

K12B86H 2012 BH86 (small asteroid, Earth MOID=1.2 LD, i=3.6°, H=24.4 ~45m) from PS1 (Jan. 28.46-51p3), MRO (Jan. 29.45-48p4 & 30.19-21p4), the Spacewatch 1.8m telescope (Jan. 29.45-46p3), and Lister/Faulkes North (Jan. 30.30-31p3)

MPEC 2012-B104 - "18:19 UT" - 2012 BG86

K12B86G 2012 BG86 (i=36.0°, q=0.314 AU, H=21.3 ~186m) from CSS (Jan. 27.42-47p5), MRO (Jan. 27.47-49p4, 29.07-10p4 & 30.17-19p4), Great Shefford Obs. (Jan. 27.95-96p3 & 28.99-01p4), St. Pardon de Conques Obs. (Jan. 28.90-92p3), Grasslands Obs. (Jan. 29.28-29p3), and ARO Westfield (Jan. 30.04-05p4)

MPEC 2012-B103 - "18:16 UT" - 2012 BF86

K12B86F 2012 BF86 (small asteroid, Earth MOID=9.4 LD, H=22.4 ~112m) from LINEAR (Jan. 27.15-20p4), Great Shefford Obs. (Jan. 28.90-91p3), St. Pardon de Conques Obs. (Jan. 28.95-99p3), MRO (Jan. 29.07-10p4), Spacewatch 1.8m (Jan. 29.08-09p3 & 30.09p3), ARO Westfield (Jan. 29.12-13p3), Tomas Vorobjov via Kitt Peak Natl. Obs. (KPNO) (Jan. 29.13-14p4), and MLS (Jan. 30.09-11p4)

MPEC 2012-B102 - "17:01 UT" - 2012 BE86

K12B86E 2012 BE86 (H=19.8 ~371m) from PS1 (Jan. 24.36-40p3), Spacewatch 1.8m (Jan. 26.20p3, 29.19-20p2 & 30.33-34p3), and Lister/Faulkes North (Jan. 29.52-53p5)

MPEC 2012-B101 - "16:06 UT" - 1999 AU23

J99A23U 1999 AU23 (H=17.7 ~977m) from PS1 (Jan. 29.56-59p3) and MRO (Jan. 30.37-39p4)

MPEC 2012-B100 - "15:54 UT" - 2012 BX85

K12B85X 2012 BX85 (KBO, q=39.335 AU, Q=48.315 AU, H=5.5 ~269 km) from program code 5 via Vatican Advanced Technology Telescope (VATT) (Jan. 23.39-41p6, 27.41-43p5 & 29.41-43p3)

<< DOU on 30 Jan. '12 >> MPEC 2012-B99 - "06:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K12B77A 2012 BA77 (small asteroid, Q=4.079 AU, arc=5 days, H=25.9 ~22m, close passer) from ARO Westfield (Jan. 29.28-31p3 at V=22.0-22.3)
K12B61U 2012 BU61 (Q=4.393 AU, arc=3 days, H=21.0 ~214m) from ARO Westfield (Jan. 29.14-16p3)
K12B11O 2012 BO11 (small asteroid, arc=10 days, H=26.0 ~21m, close passer) from Spacewatch 1.8m (Jan. 29.49-50p3)
K11W02L 2011 WL2 (arc=74 days, H=20.8 ~234m) from ARO Westfield (Jan. 29.06-09p3 at V=22.3-6)
A1955 101955 1999 RQ36 (PMD) from MRO (Jan. 29.50-53p4)
Observations of recently (no longer) risk-listed objects
K12B77C 2012 BC77 (small asteroid, arc=4 days, H=25.1 ~32m) from ARO Westfield (Jan. 29.33-35p3) and Spacewatch 1.8m (Jan. 29.40-41p3)
K12B27F 2012 BF27 (small asteroid, arc=6 days, H=26.1 ~20m, close passer) from Spacewatch 1.8m (Jan. 29.42-43p3)
K12B14B 2012 BB14 (small asteroid, arc=10 days, H=25.2 ~31m, PMD candidate) from Spacewatch 1.8m (Jan. 30.17p2)
K12B11N 2012 BN11 (arc=10 days, H=20.9 ~224m) from Spacewatch 1.8m (Jan. 29.50p3)
K12B11K 2012 BK11 (small asteroid, arc=10 days, H=23.0 ~85m) from ARO Westfield (Jan. 29.36-38p3 at V=21.7-22.1)
Observations of close-passing objects
K12B34X 2012 BX34 (arc=2 days, H=27.6 ~10m, close passer) from CSS (Jan. 25.50-51p3)
K12B14D 2012 BD14 (arc=9 days, H=26.5 ~17m, close passer) from ARO Westfield (Jan. 29.17-18p4)
Observation campaigns (radar support, potential mission destinations)
K11Y74U 2011 YU74 (arc=34 days, H=23.0 ~85m, PMD candidate) from Wishing Star Obs. (Jan. 30.18p3)
P6004 256004 2006 UP (PMD) from the Sloan Digital Sky Survey (SDSS) (2006 Oct. 21.40p8)
J2642 192642 1999 RD32 (radar) from the Spacewatch 0.9m telescope (Jan. 29.28-32p3)
H5706 175706 1996 FG3 (PMD) from MLS (Jan. 29.17-19p4)
G2421 162421 2000 ET70 (radar) from Sandlot Obs. (Jan. 29.50p4)
E1018 141018 2001 WC47 (PMD, radar) from New Millennium Obs. (Jan. 25.99p2 & 26.04p2)
D8175 138175 2000 EE104 (PMD) from Petit Jean Mtn. South Obs. (PJMSO) (Jan. 29.35-36p5)
96631 96631 1999 FP59 (PMD) from Spacewatch 0.9m (Jan. 29.40-44p3)
29075 29075 1950 DA (radar) from CSS (Jan. 29.24-26p4)
00433 433 Eros (1898 DQ) (radar) from Mt. Tuffley Obs. (Jan. 29.01-02p3)
-- Potential mission destinations list & ephemerides -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K12B77O 2012 BO77 (arc=1 day, H=22.2 ~123m) from Kevin Hills via RAS Obs. Moorook (Jan. 27.60p3)
K12B77M 2012 BM77 (arc=2 days, H=23.9 ~56m) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Jan. 29.03-04p6) and ARO Westfield (Jan. 29.10-11p4)
K12B77K 2012 BK77 (arc=3 days, H=22.4 ~112m) from PS1 (Jan. 29.33p1 & 29.42p2)
K12B26V 2012 BV26 (arc=7 days, H=22.5 ~107m) from Spacewatch 1.8m (Jan. 29.51p3)
K12B14G 2012 BG14 (arc=8 days, H=25.0 ~34m) from PS1 (Jan. 28.46-51p3)
K12B13V 2012 BV13 (arc=10 days, H=22.2 ~123m) from ARO Westfield (Jan. 29.02-03p3)
K11Y63A 2011 YA63 (arc=29 days, H=24.6 ~41m) from ARO Westfield (Jan. 29.20-22p3 at V=21.8-22.3)
K11Y62W 2011 YW62 (arc=31 days, H=23.4 ~71m) from Spacewatch 1.8m (Jan. 30.15-16p3)
K05L03O 2005 LO3 (arc=13 days, H=23.5 ~68m) from SDSS (2005 June 4.32-33p3, 2005 June 5.32p6 & 2005 June 7.24p3)
K05EG9Z 2005 EZ169 (arc=23 days, H=25.3 ~29m) from SDSS (2005 March 10.16p3 & 2005 April 2.30-31p3)
K12B11J 2012 BJ11 (arc=10 days, H=22.0 ~135m) from PJMSO (Jan. 29.31-32p7)
Observations of other asteroidal objects
K12B77N 2012 BN77 (Q=4.005 AU, arc=4 days, H=19.4 ~446m) from Spacewatch 1.8m (Jan. 29.52-53p3)
K12B77B 2012 BB77 (arc=4 days, H=19.0 ~537m) from ARO Westfield (Jan. 29.31-32p3) and PS1 (Jan. 29.54-57p3)
K12B76Z 2012 BZ76 (Q=4.088 AU, arc=5 days, H=18.8 ~589m) from Holmes/CTIO (Jan. 29.24-25p4)
K12B61T 2012 BT61 (arc=5 days, H=19.5 ~426m) from ARO Westfield (Jan. 29.24-27p3 at V=21.9-22.2)
K12B23T 2012 BT23 (arc=10 days, H=19.0 ~537m) from Los Molinos Obs. (Jan. 29.26-27p2), ARO Westfield (Jan. 29.27-29p4), Desert Moon Obs. (Jan. 29.34-36p4), and Wishing Star Obs. (Jan. 30.12-13p3)
K12B23S 2012 BS23 (arc=9 days, H=21.5 ~170m) from ARO Westfield (Jan. 29.22-23p3)
K12B23R 2012 BR23 (arc=8 days, H=21.4 ~178m) from PS1 (Jan. 28.46-50p4)
K12B02B 2012 BB2 (arc=13 days, H=20.7 ~245m) from Wishing Star Obs. (Jan. 30.20-21p3)
K12A13C 2012 AC13 (arc=16 days, H=19.8 ~371m) from Desert Moon Obs. (Jan. 29.24-29p3)
K12A11A 2012 AA11 (arc=15 days, H=20.1 ~323m) from ARO Westfield (Jan. 29.09-10p3)
K12A10U 2012 AU10 (i=39.1°, arc=18 days, H=18.0 ~851m) from CSS (Jan. 29.41-43p4)
K12A10T 2012 AT10 (arc=28 days, H=20.1 ~323m) from Spacewatch 1.8m (Jan. 30.12-13p3)
K12A01E 2012 AE1 (arc=28 days, H=19.0 ~537m) from PJMSO (Jan. 29.30-31p7)
K11Y62U 2011 YU62 (Q=4.766 AU, arc=30 days, H=17.5 ~1.07 km) from Los Molinos Obs. (Jan. 29.05-07p5)
K11Y40D 2011 YD40 (arc=31 days, H=21.0 ~214m) from ARO Westfield (Jan. 29.15-18p4 at V=21.9-22.2)
K11Y28G 2011 YG28 (Q=4.530 AU, arc=33 days, H=21.5 ~170m) from ARO Westfield (Jan. 29.32-33p3)
K11Y15V 2011 YV15 (Q=4.394 AU, arc=3 opp, H=17.1 ~1.29 km) from New Millennium Obs. (Jan. 26.07-10p4) and Pear Tree Obs. (Jan. 29.28-31p3)
K11Y10X 2011 YX10 (arc=36 days, H=21.5 ~170m) from ARO Westfield (Jan. 29.03-05p3 at V=21.9-22.1) and Spacewatch 1.8m (Jan. 30.11p3)
K11Y10Q 2011 YQ10 (arc=37 days, H=18.8 ~589m) from Spacewatch 1.8m (Jan. 30.14-15p3)
K11Y06L 2011 YL6 (arc=36 days, H=21.4 ~178m) from CSS (Jan. 29.33-35p4)
K11X01E 2011 XE1 (arc=57 days, H=18.2 ~776m) from ARO Westfield (Jan. 29.19-20p4) and PJMSO (Jan. 29.21-22p6)
K11X00E 2011 XE (arc=2 opp, H=19.3 ~467m) from Desert Moon Obs. (Jan. 29.10-15p2 & 29.19p1)
K11WD4V 2011 WV134 (Q=4.676 AU, arc=2 opp, H=17.0 ~1.35 km) from PJMSO (Jan. 29.18-19p6) and Galati Obs. (Jan. 29.68p3)
K11W46M 2011 WM46 (arc=64 days, H=19.7 ~389m) from ARO Westfield (Jan. 29.11-14p3 at V=22.2-7)
K11SA2L 2011 SL102 (arc=3 opp, H=18.2 ~776m) from PJMSO (Jan. 29.27-28p6)
K11S69R 2011 SR69 (arc=127 days, H=20.1 ~323m) from ARO Westfield (Jan. 29.29-30p3)
K11Q37Y 2011 QY37 (arc=2 opp, H=18.5 ~676m) from ARO Westfield (Jan. 29.04-05p3)
K11Q14F 2011 QF14 (arc=159 days, H=18.8 ~589m) from Holmes/CTIO (Jan. 29.03-05p5) and ARO Westfield (Jan. 29.07-08p3)
K10L33R 2010 LR33 (arc=3 opp, H=18.2 ~776m) from Spacewatch 1.8m (Jan. 29.54-55p3)
K09R04D 2009 RD4 (Q=4.364 AU, arc=42 days, H=20.5 ~269m) from SDSS (2009 Oct. 15.28-29p4)
K09A15K 2009 AK15 (arc=2 opp, H=19.4 ~446m) from Holmes/CTIO (Jan. 29.03-05p5)
K08W13Z 2008 WZ13 (arc=2 opp, H=18.6 ~645m) from PJMSO (Jan. 29.20-21p6), Hamamatsu-Yuto Obs. (Jan. 29.51-55p9), and Galati Obs. (Jan. 29.69p16)
K08Q00Y 2008 QY (arc=3 opp, H=18.6 ~645m) from New Millennium Obs. (Jan. 26.08-12p6)
K08A31B 2008 AB31 (arc=5 opp, H=20.2 ~309m) from SDSS (2006 Jan. 7.48p3)
K07Y56V 2007 YV56 (arc=4 opp, H=21.0 ~214m) from MLS (Jan. 29.24-27p4 at V=21.1-22.4)
K06SD4J 2006 SJ134 (arc=3 opp, H=17.9 ~891m) from SDSS (2004 April 25.37-38p4)
K06K40A 2006 KA40 (arc=3 opp, H=19.6 ~407m) from SDSS (2006 May 25.23p6 at r=20.77, 2006 May 26.23p3 at r=20.80 & 2006 May 27.24p3 at r=22.05)
K05N01J 2005 NJ1 (arc=5 opp, H=18.5 ~676m) from Galati Obs. (Jan. 29.70p3)
K05J22A 2005 JA22 (arc=3 opp, H=18.6 ~645m) from Holmes/CTIO (Jan. 29.03-05p4)
K03B47K 2003 BK47 (Q=4.682 AU, arc=3 opp, H=17.9 ~891m) from CSS (Jan. 29.29-32p4) and ISON-NM Obs. (Jan. 29.37-42p4)
K03B33X 2003 BX33 (arc=4 opp, H=20.9 ~224m) from CSS (Jan. 29.29-33p4)
K03B01L 2003 BL1 (arc=4 opp, H=19.3 ~467m) from New Millennium Obs. (Jan. 26.00-05p6) and PJMSO (Jan. 29.36-37p5)
K02T68H 2002 TH68 (arc=34 days, H=21.5 ~170m) from SDSS (2002 Oct. 4.30p4)
K01SQ2J 2001 SJ262 (Q=4.640 AU, arc=2 opp, H=19.9 ~355m) from SDSS (2001 Nov. 21.25-26p4)
K00Y04G 2000 YG4 (arc=156 days, H=20.8 ~234m) from SDSS (2001 Jan. 25.32p4)
J96A02E 1996 AE2 (i=37.4°, arc=2 opp, H=20.3 ~295m) from New Millennium Obs. (Jan. 25.99p6 & 26.04-05p4) and PJMSO (Jan. 29.34-35p5)
V0842 310842 2003 AK18 from MLS (Jan. 29.17-19p4)
V0442 310442 2000 CH59 from PJMSO (Jan. 29.21p5)
U2831 302831 2003 FH from ARO Westfield (Nov. 2.03-06p13)
T4739 294739 2008 CM from Galati Obs. (Jan. 29.71p4)
K2435 202435 2005 XH8 from New Millennium Obs. (Jan. 25.82p1 & 26.82p1)
H0502 170502 2003 WM7 from ARO Westfield (Nov. 18.34-40p7)
G8378 168378 1997 ET30 from PS1 (Jan. 28.47-50p3)
G3081 163081 2002 AG29 from ARO Westfield (Nov. 6.08p1 & 6.13-25p6)
G3000 163000 2001 SW169 from New Millennium Obs. (Jan. 26.00-06p6)
G2186 162186 1999 OP3 from New Millennium Obs. (Jan. 25.97p2 & 26.03p2) and Wishing Star Obs. (Jan. 30.03-04p3)
G2038 162038 1996 DH from CSS (Jan. 29.36-39p4)
F4555 154555 2003 HA from CSS (Jan. 29.47-49p4)
F3951 153951 2002 AC3 from New Millennium Obs. (Jan. 25.98p2 & 26.04p2) and Spacewatch 0.9m (Jan. 30.15-18p3)
E4901 144901 2004 WG1 from CSS (Jan. 29.34-36p4)
E3651 143651 2003 QO104 from New Millennium Obs. (Jan. 25.98-03p6), CSS (Jan. 29.26-28p3), and PJMSO (Jan. 29.33-34p5)
E3381 143381 2003 BC21 from SDSS (2002 Dec. 31.52p4 & 2003 Jan. 27.47p4)
E2563 142563 2002 TR69 from New Millennium Obs. (Jan. 26.08-12p4)
E2348 142348 2002 RX211 from New Millennium Obs. (Jan. 25.99p2 & 26.04p2)
D8925 138925 2001 AU43 from SDSS (2001 Feb. 21.17p4)
D7925 137925 2000 BJ19 from New Millennium Obs. (Jan. 26.01-07p6)
A1873 101873 1999 NC5 from New Millennium Obs. (Jan. 26.01p2 & 26.06p2)
85990 85990 1999 JV6 from New Millennium Obs. (Jan. 26.07-11p6)
85839 85839 1998 YO4 from Wishing Star Obs. (Jan. 30.05-06p3)
66251 66251 1999 GJ2 from SDSS (2001 June 16.18p4 & 2005 Oct. 11.38-39p4)
53319 53319 1999 JM8 from Spacewatch 0.9m (Jan. 29.46-50p3)
41440 41440 2000 HZ23 from SDSS (2000 May 4.42-43p4)
32906 32906 1994 RH from New Millennium Obs. (Jan. 25.97-98p2 & 26.03p2), PJMSO (Jan. 29.32p5), and CSS (Jan. 29.34-36p4)
27002 27002 1998 DV9 from Spacewatch 0.9m (Jan. 29.51-54p3)
24475 24475 2000 VN2 from Wishing Star Obs. (Jan. 30.07-08p3)
20826 20826 2000 UV13 from Galati Obs. (Jan. 29.72p2)
09400 9400 1994 TW1 from New Millennium Obs. (Jan. 26.09-12p5)
06455 6455 1992 HE from New Millennium Obs. (Jan. 26.09-13p6)
06050 6050 Miwablock (1992 AE) from New Millennium Obs. (Jan. 25.99p2 & 26.04p2) and MLS (Jan. 29.24-26p4)
05143 5143 Heracles (1991 VL) from ARO Westfield (Nov. 6.29-34p8 & 18.06-28p21)
03554 3554 Amun (1986 EB) from New Millennium Obs. (Jan. 26.10-14p4)
03352 3352 McAuliffe (1981 CW) from New Millennium Obs. (Jan. 26.08-11p4)
03103 3103 Eger (1982 BB) from New Millennium Obs. (Jan. 26.01p2 & 26.06p2)
01866 1866 Sisyphus (1972 XA) from Hamamatsu-Yuto Obs. (Jan. 29.37-39p3)
01620 1620 Geographos (1951 RA) from PJMSO (Jan. 29.19-20p5)

Observers on 30 January '12

A total of 29 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 31 in MPECs 2012-B99, 2012-B103, 2012-B104, 2012-B106, 2012-B107 & 2012-B108 -- 2012 BV13, 2012 BU61, 2012 BT61, 2012 BT23, 2012 BS23, 2012 BM77, 2012 BL86, 2012 BK86, 2012 BK11, 2012 BJ86, 2012 BG86, 2012 BF86, 2012 BD14, 2012 BC77, 2012 BB77, 2012 BA77, 2012 AA11, 2011 YX10, 2011 YG28, 2011 YD40, 2011 YA63, 2011 XE1, 2011 WM46, 2011 WL2, 2011 SR69, 2011 QY37, 2011 QF14, 302831, 170502, 163081, 5143
`300`	Bisei Spaceguard Center in Japan, 1 in MPEC 2012-B108 -- 2012 BL86
`703`	Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2012-B99, 2012-B104 & 2012-B108 -- 2012 BX34, 2012 BL86, 2012 BG86, 2012 AU10, 2011 YL6, 2003 BX33, 2003 BK47, 32906, 29075, 162038, 154555, 144901, 143651
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPEC 2012-B99 -- 2012 BZ76, 2012 BM77, 2011 QF14, 2009 AK15, 2005 JA22
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2012-B99 -- 2012 BT23, 2012 AC13, 2011 XE
`F65%`	Tim Lister in southern California via Faulkes Telescope North in Hawaii, 3 in MPECs 2012-B102, 2012-B105 & 2012-B109 -- 2012 BM86, 2012 BH86, 2012 BE86
`C73`	Galati Obs. in Romania, 5 in MPEC 2012-B99 -- 2011 WV134, 2008 WZ13, 2005 NJ1, 294739, 20826
`651`	Grasslands Obs. in Arizona, 2 in MPECs 2012-B104 & 2012-B108 -- 2012 BL86, 2012 BG86
`J95`	Great Shefford Obs. in England, 2 in MPECs 2012-B103 & 2012-B104 -- 2012 BG86, 2012 BF86
`379`	Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2012-B99 -- 2008 WZ13, 1866
`H15`	ISON-NM Obs. in New Mexico, 1 in MPEC 2012-B99 -- 2003 BK47
`695{`	Tomas Vorobjov in England via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2012-B103 -- 2012 BF86
`704`	LINEAR in New Mexico, 1 in MPEC 2012-B103 -- 2012 BF86
`844`	Los Molinos Obs. in Uruguay, 2 in MPEC 2012-B99 -- 2012 BT23, 2011 YU62
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2012-B99, 2012-B101, 2012-B103, 2012-B104, 2012-B105, 2012-B106, 2012-B107, 2012-B108 & 2012-B109 -- 2012 BM86, 2012 BL86, 2012 BK86, 2012 BJ86, 2012 BH86, 2012 BG86, 2012 BF86, 1999 AU23, 101955
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2012-B99, 2012-B103, 2012-B106 & 2012-B107 -- 2012 BK86, 2012 BJ86, 2012 BF86, 2007 YV56, 310842, 175706, 6050
`J93`	Mt. Tuffley Obs. in England, 1 in MPEC 2012-B99 -- 433
`A24`	New Millennium Obs. in Italy, 22 in MPEC 2012-B99 -- 2011 YV15, 2008 QY, 2003 BL1, 1996 AE2, 85990, 32906, 202435, 163000, 162186, 153951, 143651, 142563, 142348, 141018, 137925, 101873, 9400, 6455, 6050, 3554, 3352, 3103
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2012-B99, 2012-B101, 2012-B102, 2012-B105 & 2012-B109 -- 2012 BR23, 2012 BM86, 2012 BK77, 2012 BH86, 2012 BG14, 2012 BE86, 2012 BB77, 1999 AU23, 168378
`H23`	Pear Tree Obs. in Florida, 1 in MPEC 2012-B99 -- 2011 YV15
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 13 in MPEC 2012-B99 -- 2012 BJ11, 2012 AE1, 2011 XE1, 2011 WV134, 2011 SL102, 2008 WZ13, 2003 BL1, 1996 AE2, 32906, 310442, 143651, 138175, 1620
D90`	Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-B99 -- 2012 BO77
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2012-B99 -- 162421
`645`	Sloan Digital Sky Survey (SDSS) in New Mexico, 14 in MPEC 2012-B99 -- 2009 RD4, 2008 AB31, 2006 SJ134, 2006 KA40, 2005 LO3, 2005 EZ169, 2002 TH68, 2001 SJ262, 2000 YG4, 66251, 41440, 256004, 143381, 138925
`691`	Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2012-B99 -- 96631, 53319, 27002, 192642, 153951
`291`	Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2012-B99, 2012-B102, 2012-B103 & 2012-B105 -- 2012 BV26, 2012 BO11, 2012 BN77, 2012 BN11, 2012 BH86, 2012 BF86, 2012 BF27, 2012 BE86, 2012 BC77, 2012 BB14, 2012 AT10, 2011 YX10, 2011 YW62, 2011 YQ10, 2010 LR33
`I93`	St. Pardon de Conques Obs. in France, 3 in MPECs 2012-B103, 2012-B104 & 2012-B108 -- 2012 BL86, 2012 BG86, 2012 BF86
`2905`	program code 5 via Vatican Advanced Technology Telescope in Arizona, 1 in MPEC 2012-B100 -- 2012 BX85
`I15`	Wishing Star Obs. in Rhode Island, 6 in MPEC 2012-B99 -- 2012 BT23, 2012 BB2, 2011 YU74, 85839, 24475, 162186

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

Impact Risk Monitoring on 30 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 BM86	JPL Sentry	2125	2026-2108	65	1.2e-07	-5.41	-6.29	0	JPL: "Analysis based on 12 observations spanning .89972 days (2012-Jan-29.55767 to 2012-Jan-30.457389)." Diameter approximately 0.142 km. from mean, weighted H=21.9.

2012 BL86	JPL Sentry	2125	2057-2061	2	2.2e-06	-5.22	-5.40	0	JPL: "Analysis based on 30 observations spanning .91281 days (2012-Jan-29.34034 to 2012-Jan-30.25315)." Diameter approximately 0.055 km. from mean, weighted H=24.0.

2012 BJ86	JPL Sentry	2125	2077-2111	13	1.3e-06	-4.43	-4.82	0	JPL: "Analysis based on 26 observations spanning 1.0493 days (2012-Jan-29.10142 to 2012-Jan-30.15077)." Diameter approximately 0.150 km. from mean, weighted H=21.7.

2012 BA77	JPL Sentry	1516	2015-2103	70	1.7e-05	-4.96	-5.53	0	JPL: "Analysis based on 9 observations spanning 4.9442 days (2012-Jan-24.36724 to 2012-Jan-29.311453)." Diameter approximately 0.022 km. from mean, weighted H=25.9.
2012 BA77	NEODyS	1516	2025-2072	24	1.24e-05	-4.97	-5.36	0	NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2012-01-24.368 to 2012-01-29.312."

2012 BU61	JPL Sentry	1516	2031-2110	20	8.0e-07	-3.96	-4.38	0	JPL: "Analysis based on 26 observations spanning 3.0686 days (2012-Jan-26.0941 to 2012-Jan-29.162714)." Diameter approximately 0.211 km. from mean, weighted H=21.0.
2012 BU61	NEODyS	1516	2031-2090	9	9.05e-07	-4.00	-4.18	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2012-01-26.095 to 2012-01-29.163."

2012 BO11	JPL Sentry	1516	2093	1	5.7e-08	-7.94	-7.94	0	JPL: "Analysis based on 42 observations spanning 10.003 days (2012-Jan-19.49216 to 2012-Jan-29.49508)." Diameter approximately 0.024 km. from mean, weighted H=25.8.

2011 WL2	JPL Sentry	1516	2098	1	1.0e-06	-4.19	-4.19	0	JPL: "Analysis based on 209 observations spanning 73.800 days (2011-Nov-16.31883 to 2012-Jan-29.11929)." Diameter approximately 0.240 km. from mean, weighted H=20.7.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 30 January '12

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

2335	Posted Traffic Report
2125	Noted that JPL Sentry has posted 2012 BJ86 as an impact risk - see above Noted that JPL Sentry has posted 2012 BL86 as an impact risk - see above Noted that JPL Sentry has posted 2012 BM86 as an impact risk - see above
1925	Grabbed MPEC 2012-B103 - 2012 BF86 - see above Grabbed MPEC 2012-B104 - 2012 BG86 - see above Grabbed MPEC 2012-B105 - 2012 BH86 - see above Grabbed MPEC 2012-B106 - 2012 BJ86 - see above Grabbed MPEC 2012-B107 - 2012 BK86 - see above Grabbed MPEC 2012-B108 - 2012 BL86 - see above Grabbed MPEC 2012-B109 - 2012 BM86 - see above
1720	Grabbed MPEC 2012-B100 - 2012 BX85 - see above Grabbed MPEC 2012-B101 - 1999 AU23 - see above Grabbed MPEC 2012-B102 - 2012 BE86 - see above
1516	Noted that JPL Sentry has updated its 2011 WL2 risk assessment - see above Noted that JPL Sentry has updated its 2012 BA77 risk assessment - see above Noted that NEODyS has updated its 2012 BA77 risk assessment - see above Noted that JPL Sentry has updated its 2012 BO11 risk assessment - see above Noted that JPL Sentry has updated its 2012 BU61 risk assessment - see above Noted that NEODyS has updated its 2012 BU61 risk assessment - see above Grabbed MPEC 2012-B99 - Daily Orbit Update - see above

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