Contents  on 4 May '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 4 May '12

Four objects reported inside ten LD

Four objects are reported traveling within ten lunar distances (LD) of Earth today. 2012 HA34 is outbound from 5.00 to 7.35 LD and radar target 2012 HM from 8.14 to 9.55 LD. Risk-listed 2012 HE31 exits ten LD, moving from 9.01 to 11.28 LD, as does probably the so-far unreported 1992 JD, which is calculated with some uncertainty to pass from 9.9 to 10.4 LD.

On the way in next, 2010 KK37 arrives inside ten LD on May 15th.

This report was generated at 1550 UTC with follow-up in today's DOU MPEC for 2012 HP13, 2012 HG2, and 2012 HM.


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.

NEOCP Activity  on 4 May '12

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There was one listing noted earlier today.

New MPECs  on 4 May '12

Minor Planet Electronic Circulars

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


<< OOC on 4 May '12 >> MPEC 2012-J16 - "21:34 UT" - Observations and Orbits of Comets


<< DOU on 4 May '12 >>  MPEC 2012-J15 - "06:05 UT" - Daily Orbit Update


MPEC 2012-J14 - "02:58 UT" - 2009 VA26

Observers  on 4 May '12

A total of 46 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 23 in MPEC 2012-J15 -- 2012 JA, 2012 HZ33, 2012 HW1, 2012 HR15, 2012 HN8, 2012 HN2, 2012 HN13, 2012 HM8, 2012 HL, 2012 HK, 2012 HJ31, 2012 HJ1, 2012 HH31, 2012 HG8, 2012 HG2, 2012 HD20, 2012 GS5, 2012 GK, 2012 FJ, 2012 DO, 2004 FF29, 163000, 141018
C77Bernezzo Obs. in Italy, 1 in MPEC 2012-J15 -- 141018
I32Beta Orionis Obs. in Argentina, 1 in MPEC 2012-J16 -- 29P
B75Betelgeuse Station in Italy, 5 in MPEC 2012-J16 -- C/2012 CH17, C/2012 A2, C/2011 J2, C/2011 F1, C/2010 R1
I58Betera Obs., 2 in MPEC 2012-J16 -- C/2009 P1, 29P
C86Blanes Obs. in Spain, 4 in MPEC 2012-J16 -- C/2011 UF305, C/2011 F1, C/2009 P1, 246P
I99Blanquita Obs. in Spain, 3 in MPEC 2012-J16 -- C/2011 F1, C/2009 P1, 29P
B20Carmelita Obs. in Spain, 2 in MPEC 2012-J16 -- C/2011 UF305, C/2011 F1
160Castelmartini Obs. in Italy, 6 in MPEC 2012-J16 -- C/2012 CH17, C/2011 J2, C/2011 F1, 246P, 117P, 49P
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2012-J16 -- C/2012 BJ98, C/2010 L3
A77Chante-Perdrix Obs. in France, 2 in MPEC 2012-J16 -- C/2006 S3, 29P
I51Clinton Obs., 3 in MPEC 2012-J15 -- 141018, 6455, 5587
821Cordoba Obs. Bosque Alegre Station in Argentina, 3 in MPEC 2012-J15 -- 2004 RQ252, 2003 QN47, 2001 QD96
C74El Teatrillo de Lyra Obs. in Spain, 2 in MPEC 2012-J16 -- C/2006 S3, 29P
C73Galati Obs. in Romania, 8 in MPECs 2012-J15 & 2012-J16 -- 2012 HZ33, C/2011 UF305, 2009 XG8, 322966, 312473, 154555, 141018, 5587
372Geisei Obs. in Japan, 2 in MPEC 2012-J16 -- C/2011 L4, 257P
203GiaGa Obs. in Italy, 6 in MPECs 2012-J15 & 2012-J16 -- 2012 HL, C/2011 J2, 318050, 141018, 246P, 49P
442Gualba Obs. in Spain, 1 in MPEC 2012-J16 -- 29P
H15ISON-NM Obs. in New Mexico, 2 in MPEC 2012-J16 -- C/2012 A2, C/2011 UF305
585Kiev Comet Station in the Ukraine, 3 in MPEC 2012-J16 -- C/2010 R1, C/2006 S3, 246P
D95Kurihara Obs. in Japan, 1 in MPEC 2012-J16 -- P/2012 F2
704LINEAR in New Mexico, 3 in MPEC 2012-J16 -- C/2012 A2, C/2006 S3, 123P
130Lumezzane Obs. in Italy, 3 in MPEC 2012-J16 -- C/2011 UF305, C/2010 R1, 152P
C10Maisoncelles Obs. in France, 3 in MPEC 2012-J16 -- C/2010 R1, 246P, 29P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-J14 -- 2009 VA26
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2012-J16 -- P/2012 H1
213Montcabre Obs. in Spain, 7 in MPEC 2012-J16 -- C/2012 E1, C/2012 CH17, C/2011 L4, C/2011 F1, C/2010 S1, C/2006 S3, 29P
945Monte Deva Obs. in Spain, 4 in MPEC 2012-J16 -- C/2011 F1, C/2010 R1, C/2009 P1, C/2006 S3
900Moriyama Obs. in Japan, 6 in MPEC 2012-J16 -- C/2012 CH17, C/2012 B3, C/2012 A2, C/2011 UF305, C/2011 J2, P/2010 JC81
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2012-J15 -- 68548
D81Nagano Obs. in Japan, 2 in MPEC 2012-J16 -- C/2011 F1, 246P
A24New Millennium Obs. in Italy, 16 in MPECs 2012-J15 & 2012-J16 -- P/2010 JC81, C/2009 P1, 2002 JC9, 85839, 318050, 24475, 154555, 143651, 141018, 7889, 6455, 5587, 4055, 3352, 3103, 117P
0892Oleksandr V. Shulga via Nikolaev Obs. in the Ukraine, 10 in MPEC 2012-J15 -- 2012 HP13, 2012 HM, 2012 HL, 2012 FY23, 2011 WV134, 2003 WH166, 2001 SZ269, 1994 NK, 186823, 141018
C23Olmen Obs. in Belgium, 11 in MPEC 2012-J16 -- C/2012 CH17, C/2012 A2, C/2011 UF305, C/2011 F1, C/2010 S1, C/2010 R1, C/2009 P1, C/2006 S3, 246P, 49P, 29P
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2012-J16 -- C/2011 J2
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPECs 2012-J15 & 2012-J16 -- 2012 HL, 2012 HJ1, 2012 DO, C/2011 F1, 2004 FF29, 2003 WH166, 1998 HE3
H06`E. Bryssinck via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-J16 -- 29P
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 2 in MPEC 2012-J16 -- P/2012 H1, C/2011 UF305
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 4 in MPEC 2012-J16 -- C/2011 L4, 257P, 246P, 152P
939Rodeno Obs. in Spain, 6 in MPEC 2012-J16 -- C/2011 UF305, C/2011 F1, C/2009 P1, C/2006 S3, 246P, 29P
B56Sant Pere Obs. in Spain, 1 in MPEC 2012-J16 -- C/2009 P1
204Schiaparelli Obs. in Italy, 10 in MPEC 2012-J15 -- 2012 HZ33, 2012 HC20, 2012 GK, 2012 FL35, 2012 FE58, 2010 LJ14, 2010 KX7, 2003 SV222, 322966, 141018
E12Siding Spring Survey in New South Wales, 1 in MPEC 2012-J15 -- 2012 FD23
510Siegen Obs. in Germany, 1 in MPEC 2012-J16 -- C/2011 F1
645Sloan Digital Sky Survey (SDSS) in New Mexico, 9 in MPEC 2012-J15 -- 2011 AW55, 2010 WF3, 2010 LL34, 2010 GR7, 190788, 190135, 190119, 154020, 139289
I81Tarbatness Obs. in Scotland, 9 in MPEC 2012-J16 -- C/2012 CH17, C/2012 A2, C/2011 J2, C/2011 F1, C/2010 S1, P/2010 JC81, C/2009 P1, 246P, 49P
2905Richard P. Boyle via Vatican Advanced Technology Telescope in Arizona, 1 in MPEC 2012-J16 -- C/2010 R1
C90Vinyols Obs., 1 in MPEC 2012-J16 -- 29P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 May '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 HP13JPL Sentry15442090-209231.0e-08-7.80-8.060JPL: "Analysis based on 189 observations spanning 5.3761 days (2012-Apr-22.46032 to 2012-Apr-27.836459)." Diameter approximately 0.048 km. from mean, weighted H=24.2.
2012 HG2JPL Sentry15442053-2058124.3e-05-5.49-5.950JPL: "Analysis based on 149 observations spanning 12.940 days (2012-Apr-20.37147 to 2012-May-03.311934)." Diameter approximately 0.014 km. from mean, weighted H=27.0.
2008 XBNEODyS1544R 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 4 May '12

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

2209Grabbed MPEC 2012-J16 - Observations and Orbits of Comets - see above
1550Generated Traffic Report
1546Grabbed MPEC 2012-J15 - Daily Orbit Update - see above
1544Noted that NEODyS has removed 2008 XB as an impact risk - see above
Noted that JPL Sentry has updated its 2012 HG2 risk assessment - see above
Noted that JPL Sentry has updated its 2012 HP13 risk assessment - see above
Noted that the NEOCP has become empty
0455Grabbed MPEC 2012-J14 - 2009 VA26 - see above