2012-02-01 Tracking News

Contents on 1 February '12

Traffic Report -- three objects
IAU Minor Planet Center
- NEOCP Activity -- 50 listings
- New MPECs -- six MPECs
Observers -- 21 observers
Impact Risk Monitoring -- two 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 437 risk-listed objects, 29 have had news in the last 31 days. Updated at 1745 UTC on 1 Feb.
Earth's Busy Neighborhood close passer EBN Traffic Report
Three objects are known to be within ten LD of Earth today. Updated at 0042 UTC on 1 Feb.
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 1 February '12

Three objects reported inside ten LD

Three asteroids are reported traveling within ten lunar distances (LD) of Earth today. 2012 BD14 is outbound, moving from 6.04 to 6.68 LD, intruder 2012 BX34 departs from inside ten LD, moving from 9.21 to 11.32 LD, and risk-listed 2012 BA102 leaves ten LD, passing from 9.35 to 11.00 LD.

Next up, radar target 2011 CP4 arrives inside ten LD on February 22nd.

This report was updated at 1749 UTC with follow-up in today's DOU MPEC for 2012 BA102 and 2012 BV61.

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 1 February '12

The MPC's NEO Confirmation Page has 50 listings

When last checked at 2305 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 50 objects listed. Of these, 34 were "one nighters." So far The Tracking News has counted a total of 60 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 1 February '12

Minor Planet Electronic Circulars

As of last check at 2305 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2012-C01 time-stamped "06:05 UT" - Daily Orbit Update - see below
MPEC 2012-C02 time-stamped "21:50 UT" - 2012 BN123 - see below
MPEC 2012-C03 time-stamped "21:53 UT" - 2012 BO123 - see below
MPEC 2012-C04 time-stamped "21:55 UT" - 2012 BP123 - see below
MPEC 2012-C05 time-stamped "22:02 UT" - 2012 BQ123 - see below
MPEC 2012-C06 time-stamped "22:32 UT" - 2012 BC20

MPEC 2012-C06 - "22:32 UT" - 2012 BC20

K12B20C 2012 BC20 (H=18.5 ~676m) from the Catalina Sky Survey (CSS) (Feb. 1.47-53p8)

MPEC 2012-C05 - "22:02 UT" - 2012 BQ123

K12BC3Q 2012 BQ123 (small asteroid, Earth MOID=4.5 LD, i=1.0°, H=24.7 ~39m) from the Mt. Lemmon Survey (MLS) (Jan. 31.43-45p8, Feb. 1.23p4 & 1.43-45p4)

MPEC 2012-C04 - "21:55 UT" - 2012 BP123

K12BC3P 2012 BP123 (small asteroid, Earth MOID=7.5 LD, i=2.4°, H=27.1 ~13m) from MLS (Jan. 31.32-33p10 at V=21.2-22.3 & Feb. 1.23p4 at V=21.5-9)

MPEC 2012-C03 - "21:53 UT" - 2012 BO123

K12BC3O 2012 BO123 (small asteroid, H=24.8 ~37m) from MLS (Jan. 31.24-28p11, 31.33p8, 31.44p3 & Feb. 1.19p2)

MPEC 2012-C02 - "21:50 UT" - 2012 BN123

K12BC3N 2012 BN123 (small asteroid, H=23.3 ~74m) from MLS (Jan. 31.20-22p4 at V=20.8-22.0 & 31.30-31p4 at V=21.0-22.2) and the Spacewatch 1.8m telescope (Feb. 1.13-14p2)

<< DOU on 1 Feb. '12 >> MPEC 2012-C01 - "06:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K12BA2A 2012 BA102 (small asteroid, arc=1 day, H=26.5 ~17m, close passer) from LINEAR (Jan. 31.28-33p4)
K12B86M 2012 BM86 (almost small, arc=2 days, H=21.8 ~148m) from Spacewatch 1.8m (Jan. 31.41-42p2)
Observations of recently (no longer) risk-listed objects
K12B11N 2012 BN11 (arc=12 days, H=20.9 ~224m) from Astronomical Research Obs. Westfield (Jan. 31.36-37p7) and Spacewatch 1.8m (Jan. 31.42p3)
Observations of close-passing objects
K12B61V 2012 BV61 (arc=5 days, H=25.2 ~31m, close passer) from ARO Westfield (Jan. 31.43-45p3)
Observation campaigns (radar support, potential mission destinations)
K02B25F 2002 BF25 (arc=3 opp, H=22.2 ~123m, PMD) from MLS (Jan. 31.12-15p4)
K02A00W 2002 AW (arc=3 opp, H=20.7 ~245m, PMD) from NEAT's USAF Haleakala telescope (2002 Jan. 12.30-31p2)
29075 29075 1950 DA (radar) from New Millennium Obs. (Jan. 21.87p2) and Atlante Obs. (Jan. 31.83-86p3)
02201 2201 Oljato (1947 XC) (radar) from New Millennium Obs. (Jan. 21.80p2)
00433 433 Eros (1898 DQ) (radar) from Lohrmann Obs. (Jan. 31.02-03p15), Cordell-Lorenz Obs. (Jan. 31.27-30p4), and Huelva Obs. (Jan. 31.94p1 & 31.98-99p2)
-- Potential mission destinations list & ephemerides -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K12B86H 2012 BH86 (arc=4 days, H=24.4 ~45m) from Spacewatch 1.8m (Feb. 1.19-20p3)
K12B77F 2012 BF77 (arc=4 days, H=24.8 ~37m) from Alter Satzberg Obs. (Jan. 30.89-92p4)
K12B14E 2012 BE14 (arc=12 days, H=22.7 ~98m) from Spacewatch 1.8m (Feb. 1.16-17p3)
K11Y63M 2011 YM63 (arc=31 days, H=22.1 ~129m) from LINEAR (Jan. 31.35-40p5)
K11Y28Z 2011 YZ28 (arc=34 days, H=22.5 ~107m) from Spacewatch 1.8m (Jan. 31.23p3 & Feb. 1.15-16p3)
Observations of other asteroidal objects
K12B23T 2012 BT23 (arc=11 days, H=19.1 ~513m) from ARO Westfield (Jan. 31.29-30p5)
K11SA2L 2011 SL102 (arc=3 opp, H=18.2 ~776m) from New Millennium Obs. (Jan. 21.87p2 & 21.93p2), Lohrmann Obs. (Jan. 30.82-83p5 & 30.93-98p9), and Hadano Obs. (Jan. 31.50-51p4)
K11S69R 2011 SR69 (arc=129 days, H=20.1 ~323m) from Lohrmann Obs. (Jan. 30.86p3 & 30.95-99p5)
K08W13Z 2008 WZ13 (arc=2 opp, H=18.6 ~645m) from Hamamatsu-Yuto Obs. (Jan. 31.53-57p12)
K07R19T 2007 RT19 (arc=3 opp, H=18.3 ~741m) from Pan-STARRS 1 (PS1) (Jan. 31.63-65p4)
K06V13Y 2006 VY13 (Q=4.718 AU, arc=2 opp, H=17.3 ~1.17 km) from LINEAR (Jan. 31.42-47p5)
K05S19G 2005 SG19 (Q=4.168 AU, arc=4 opp, H=16.6 ~1.62 km) from NEAT's GEODSS Haleakala telescope (1996 April 17.30-35p3)
K04M00D 2004 MD (arc=3 opp, H=20.2 ~309m) from MLS (Jan. 31.19-22p4)
K03B01L 2003 BL1 (arc=4 opp, H=19.3 ~467m) from CSS (Jan. 31.40-41p4)
K02R27D 2002 RD27 (Q=4.117 AU, arc=2 opp, H=17.7 ~977m) from Desert Moon Obs. (Jan. 31.49-53p3)
J96A02E 1996 AE2 (i=37.4°, arc=2 opp, H=20.3 ~295m) from PS1 (Jan. 30.52-54p3)
R5792 275792 2001 QH142 from LINEAR (Jan. 31.29-34p4)
K9924 209924 2005 WS55 from New Millennium Obs. (Jan. 21.81p2 & 21.90p2)
G3760 163760 2003 OR14 from Desert Moon Obs. (Jan. 31.09-11p3)
G3000 163000 2001 SW169 from CSS (Jan. 31.42-44p4)
G2186 162186 1999 OP3 from New Millennium Obs. (Jan. 21.96p2) and Hamamatsu-Yuto Obs. (Jan. 31.49-52p3)
G2038 162038 1996 DH from MLS (Jan. 31.36p4)
F9857 159857 2004 LJ1 from PS1 (Jan. 31.44-49p4)
F3951 153951 2002 AC3 from LINEAR (Jan. 31.22-27p5)
E2563 142563 2002 TR69 from AGM Obs. (Jan. 31.22-25p4)
E1498 141498 2002 EZ16 from CSS (Jan. 31.13-15p4)
D8013 138013 2000 CN101 from Oukaimeden Obs. (Jan. 29.94-98p4)
99799 99799 2002 LJ3 from New Millennium Obs. (Jan. 21.87-93p5)
90147 90147 2002 YK14 from Desert Moon Obs. (Jan. 31.13-15p3)
86039 86039 1999 NC43 from PS1 (Jan. 31.63-65p4)
85990 85990 1999 JV6 from LINEAR (Jan. 31.35-40p5)
85839 85839 1998 YO4 from New Millennium Obs. (Jan. 21.94p2)
35396 35396 1997 XF11 from CSS (Jan. 31.21-22p3)
32906 32906 1994 RH from New Millennium Obs. (Jan. 21.96p2)
24475 24475 2000 VN2 from New Millennium Obs. (Jan. 21.81p2 & 21.90p2)
21277 21277 1996 TO5 from PS1 (Jan. 31.67-68p2)
21088 21088 1992 BL2 from New Millennium Obs. (Jan. 21.87-88p2 & 21.93-94p2), MASTER-II Obs. Kislovodsk (Jan. 30.65-67p3), and LINEAR (Jan. 31.16-21p5)
20826 20826 2000 UV13 from New Millennium Obs. (Jan. 21.79-80p2 & 21.88p2)
16816 16816 1997 UF9 from New Millennium Obs. (Jan. 21.79p2)
10145 10145 1994 CK1 from New Millennium Obs. (Jan. 21.86p2 & 21.92p2) and LINEAR (Jan. 31.10-14p4)
08567 8567 1996 HW1 from New Millennium Obs. (Jan. 21.92p2)
07358 7358 Oze (1995 YA3) from New Millennium Obs. (Jan. 21.81p2)
04183 4183 Cuno (1959 LM) from New Millennium Obs. (Jan. 21.80p2 & 21.89p1)
03103 3103 Eger (1982 BB) from MASTER-II Obs. Blagoveshchensk (Jan. 30.64p1 & 30.69p1)
01866 1866 Sisyphus (1972 XA) from New Millennium Obs. (Jan. 21.80p2 & 21.89p2)
01627 1627 Ivar (1929 SH) from New Millennium Obs. (Jan. 21.87p2 & 21.93p1)
01620 1620 Geographos (1951 RA) from New Millennium Obs. (Jan. 21.82p2 & 21.90p2)
01221 1221 Amor (1932 EA1) from NEAT/Hawaii (2004 Jan. 19.61-63p3) and PS1 (Jan. 31.63-65p4)

Observers on 1 February '12

A total of 21 observers appear in today's MPECs.

Code	Observer / observatory
`I69`	AGM Obs., 1 in MPEC 2012-C01 -- 142563
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2012-C01 -- 2012 BF77
`H21`	Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2012-C01 -- 2012 BV61, 2012 BT23, 2012 BN11
`J51`	Atlante Obs. in the Canary Islands, 1 in MPEC 2012-C01 -- 29075
`703`	Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2012-C01 & 2012-C06 -- 2012 BC20, 2003 BL1, 35396, 163000, 141498
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2012-C01 -- 433
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2012-C01 -- 2002 RD27, 90147, 163760
`355`	Hadano Obs. in Japan, 1 in MPEC 2012-C01 -- 2011 SL102
`379`	Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2012-C01 -- 2008 WZ13, 162186
`J37`	Huelva Obs. in Spain, 1 in MPEC 2012-C01 -- 433
`704`	LINEAR in New Mexico, 8 in MPEC 2012-C01 -- 2012 BA102, 2011 YM63, 2006 VY13, 85990, 275792, 21088, 153951, 10145
`C01`	Lohrmann Obs. in Germany, 3 in MPEC 2012-C01 -- 2011 SR69, 2011 SL102, 433
`D54`	MASTER-II Obs. Blagoveshchensk in Russia, 1 in MPEC 2012-C01 -- 3103
`C41`	MASTER-II Obs. Kislovodsk in Russia, 1 in MPEC 2012-C01 -- 21088
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2012-C01, 2012-C02, 2012-C03, 2012-C04 & 2012-C05 -- 2012 BQ123, 2012 BP123, 2012 BO123, 2012 BN123, 2004 MD, 2002 BF25, 162038
`566`	NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2012-C01 -- 2005 SG19
`608`	NEAT's USAF Haleakala telescope in Hawaii, 2 in MPEC 2012-C01 -- 2002 AW, 1221
`A24`	New Millennium Obs. in Italy, 19 in MPEC 2012-C01 -- 2011 SL102, 99799, 85839, 32906, 29075, 24475, 21088, 209924, 20826, 16816, 162186, 10145, 8567, 7358, 4183, 2201, 1866, 1627, 1620
`J43`	Oukaimeden Obs. in Morocco, 1 in MPEC 2012-C01 -- 138013
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 6 in MPEC 2012-C01 -- 2007 RT19, 1996 AE2, 86039, 21277, 159857, 1221
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2012-C01 & 2012-C02 -- 2012 BN123, 2012 BN11, 2012 BM86, 2012 BH86, 2012 BE14, 2011 YZ28

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

Impact Risk Monitoring on 1 February '12

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2305 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 BA102	JPL Sentry	1744	2093-2112	3	3.9e-06	-6.54	-6.55	0	JPL: "Analysis based on 15 observations spanning 1.3960 days (2012-Jan-30.21365 to 2012-Jan-31.60961)." Diameter approximately 0.017 km. from mean, weighted H=26.5.

2012 BM86	JPL Sentry	1744	2072-2102	7	2.3e-08	-6.10	-6.54	0	JPL: "Analysis based on 14 observations spanning 1.8586 days (2012-Jan-29.55767 to 2012-Jan-31.41632)." Diameter approximately 0.151 km. from mean, weighted H=21.8.
2012 BM86	NEODyS	1744	R E M O V E D						-

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 1 February '12

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

2305	Grabbed MPEC 2012-C02 - 2012 BN123 - see above Grabbed MPEC 2012-C03 - 2012 BO123 - see above Grabbed MPEC 2012-C04 - 2012 BP123 - see above Grabbed MPEC 2012-C05 - 2012 BQ123 - see above Grabbed MPEC 2012-C06 - 2012 BC20 - see above
1749	Posted Traffic Report
1744	Noted that JPL Sentry has updated its 2012 BA102 risk assessment - see above Noted that JPL Sentry has updated its 2012 BM86 risk assessment - see above Noted that NEODyS has removed 2012 BM86 as an impact risk - see above Grabbed MPEC 2012-C01 - Daily Orbit Update - see above

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