Contents  on 22 March '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 22 March '12

Four objects reported inside ten LD

Four objects are reported flying inside ten lunar distances (LD) of our planet today. 2012 EO8 exits Earth's Hill sphere, traveling from 3.69 to 5.10 LD. Further out, risk-listed 2012 EK5 comes its closest to Earth this time around, reaching 5.82 LD at 0432 UTC, 2012 EL8 is outbound from 8.3 to 8.7 LD*, and 2012 EJ5 departs from inside ten LD, passing from 9.94 to 10.74 LD.

Up next, radar target intruder 2012 EG5 arrives inside ten LD on March 27th and returning 2007 HV4 comes inside on April 14th.

This report was posted at 1421 UTC with follow-up in today's DOU MPEC for 2012 FG, 2012 EO8, and 2012 EG5.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. Object distances are interpreted by A/CC from JPL Horizons data. "LD*" indicates some passage uncertainty. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 22 March '12

The MPC's NEO Confirmation Page has 19 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nineteen objects listed. Of these, fourteen were "one nighters." So far The Tracking News has counted a total of 32 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 22 March '12

Minor Planet Electronic Circulars

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


MPEC 2012-F55 - "19:15 UT" - Editorial Notice: Mailing of MPECs


MPEC 2012-F54 - "18:07 UT" - Comet P/2005 JY126 = 2012 F4 (Catalina)


MPEC 2012-F53 - "14:58 UT" - 2012 FB14


MPEC 2012-F52 - "14:56 UT" - 2012 FA14


MPEC 2012-F51 - "14:54 UT" - 2012 FZ13


MPEC 2012-F50 - "14:51 UT" - 2012 FY13


MPEC 2012-F49 - "14:49 UT" - 2012 FX13


<< DOU on 22 Mar. '12 >>  MPEC 2012-F48 - "06:03 UT" - Daily Orbit Update

Observers  on 22 March '12

A total of 32 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2012-F48 -- 2012 EO8
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2012-F48 -- 2012 DX75
B75Betelgeuse Station in Italy, 4 in MPEC 2012-F48 -- 2012 EL5, 2012 EK8, 2012 DX75, 2012 AA11
B88Bigmuskie Obs. in Italy, 1 in MPEC 2012-F48 -- 2012 DX75
160Castelmartini Obs. in Italy, 6 in MPEC 2012-F48 -- 2012 EL5, 2012 EK8, 2012 EB2, 2012 DX75, 2012 BC20, 2011 YV15
703Catalina Sky Survey (CSS) in Arizona, 16 in MPEC 2012-F48 -- 2012 EK8, 2012 DU30, 2012 CC17, 2011 YV15, 2011 WV134, 68267, 32906, 275558, 238063, 171819, 16912, 138205, 136618, 9400, 7358, 5324
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPEC 2012-F48 -- 2012 FJ, 2012 EM8, 2012 DX32, 2012 DQ8
151Eschenberg Obs. in Switzerland, 1 in MPEC 2012-F48 -- 2004 QJ7
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-F54 -- P/2012 F4
J95Great Shefford Obs. in England, 1 in MPEC 2012-F48 -- 2012 EO8
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2012-F48 -- 2011 YV15, 141018
246KLENOT in the Czech Republic, 7 in MPEC 2012-F48 -- 2012 ES14, 2012 EQ10, 2012 EM8, 2012 EG5, 2012 DO8, 2012 DK61, 3102
046Klet Obs. in the Czech Republic, 1 in MPEC 2012-F48 -- 2012 EK8
704LINEAR in New Mexico, 7 in MPEC 2012-F48 -- 2012 EK8, 312942, 238063, 154144, 136618, 9400, 3352
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2012-F49, 2012-F50, 2012-F51, 2012-F52 & 2012-F53 -- 2012 FZ13, 2012 FY13, 2012 FX13, 2012 FB14, 2012 FA14
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPEC 2012-F48 -- 2012 DG4, 2012 CC17, 2011 FR29
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2012-F48 -- 2004 FG11
C91Montevenere Obs., 1 in MPEC 2012-F48 -- 2012 EG5
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2012-F48, 2012-F49, 2012-F50, 2012-F51 & 2012-F53 -- 2012 FZ13, 2012 FY13, 2012 FX13, 2012 FG, 2012 FC1, 2012 FB14, 41429, 318160, 277810, 21277, 172722, 136618
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2012-F48 -- 2011 HS4
A13Naef Obs. in Switzerland, 1 in MPEC 2012-F48 -- 2001 HA8
A24New Millennium Obs. in Italy, 21 in MPEC 2012-F48 -- 2012 EG5, 2012 DX75, 2012 DH4, 2012 CD29, 2012 BC20, 2012 AA11, 2011 XO3, 89959, 85839, 317643, 29075, 21088, 162186, 155336, 154269, 138359, 138013, 101873, 1917, 1627, 1620
C47Nonndorf Obs. in Austria, 4 in MPEC 2012-F48 -- 2012 DH4, 317643, 24475, 1627
J69North Obs. in England, 1 in MPEC 2012-F48 -- 2012 DH4
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2012-F48 -- 192642
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2012-F48 & 2012-F52 -- 2012 FA14, 2012 DX75, 2012 DK61, 318050, 212546, 6455, 6053, 5620, 3271
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-F54 -- P/2012 F4
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2012-F48 -- 2012 EG5
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2012-F48 -- 2010 SO16
926Tenagra II Obs. in Arizona, 1 in MPEC 2012-F52 -- 2012 FA14
198Wildberg Obs. in Germany, 1 in MPEC 2012-F48 -- 2012 DU30
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2012-F48 -- 2012 EL5, 2012 DH4, 2012 BC20
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 March '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 FA14JPL Sentry19022014-21116383.8e-06-4.14-4.380JPL: "Analysis based on 15 observations spanning .92353 days (2012-Mar-21.29656 to 2012-Mar-22.22009)." Diameter approximately 0.092 km. from mean, weighted H=22.8.

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 22 March '12

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

2004Grabbed MPEC 2012-F55 - Editorial Notice: Mailing of MPECs - see above
1902Noted that JPL Sentry has posted 2012 FA14 as an impact risk - see above
Grabbed MPEC 2012-F54 - Comet P/2005 JY126 = 2012 F4 (Catalina) - see above
1514Grabbed MPEC 2012-F49 - 2012 FX13 - see above
Grabbed MPEC 2012-F50 - 2012 FY13 - see above
Grabbed MPEC 2012-F51 - 2012 FZ13 - see above
Grabbed MPEC 2012-F52 - 2012 FA14 - see above
Grabbed MPEC 2012-F53 - 2012 FB14 - see above
1421Posted Traffic Report
1419Grabbed MPEC 2012-F48 - Daily Orbit Update - see above