Contents  on 22 June '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 June '12

Two objects reported inside ten LD

Two objects are reported to be less than ten lunar distances (LD) from our planet today. 2012 LU is inbound from 6.04 to 5.80 LD and risk-listed 2012 MY2 from 6.61 to 5.82 LD. No other objects are known to come inside ten LD until November.

This report was generated at 1555 UTC with follow-up in today's DOU MPEC for 2012 MY2, 2012 LA11, and 2012 LU, and was revised at 1753 UTC with improved distance info.


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 22 June '12

The MPC's NEO Confirmation Page has 17 listings

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

New MPECs  on 22 June '12

Minor Planet Electronic Circulars

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


MPEC 2012-M36 - "17:05 UT" - 2012 MV4


MPEC 2012-M35 - "17:02 UT" - 2012 MS4


MPEC 2012-M34 - "17:00 UT" - 2012 MR4


<< OOC on 22 June '12 >> MPEC 2012-M33 - "16:34 UT" - Observations and Orbits of Comets


<< DOU on 22 June '12 >>  MPEC 2012-M32 - "06:02 UT" - Daily Orbit Update

Observers  on 22 June '12

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

CodeObserver / observatory
349Ageo Obs. in Japan, 19 in MPEC 2012-M33 -- C/2012 K5, C/2012 J1, C/2012 F1, C/2012 CH17, C/2012 BJ98, P/2012 B1, C/2012 A2, P/2011 W2, P/2011 W1, C/2011 UF305, C/2011 L4, C/2011 A3, C/2009 P1, C/2005 L3, 246P, 244P, 117P, 29P, 9P
J24Altamira Obs. in the Canary Islands, 15 in MPEC 2012-M33 -- C/2012 L3, C/2012 L1, C/2012 K5, P/2012 K3, C/2012 K1, C/2012 J1, C/2012 CH17, C/2012 BJ98, C/2011 UF305, C/2010 S1, C/2009 P1, 246P, 123P, 117P, 49P
E23Arcadia Obs. in New South Wales, 1 in MPEC 2012-M35 -- 2012 MS4
H21Astronomical Research Obs. Westfield in Illinois, 15 in MPECs 2012-M32, 2012-M33, 2012-M34, 2012-M35 & 2012-M36 -- 2012 MW1, 2012 MV4, 2012 MU2, 2012 MS4, 2012 MR4, 2012 LU7, 2012 LR1, 2012 LL9, 2012 LJ11, 2012 LG4, 2012 LC13, 2012 LC1, 2012 LA11, C/2012 L3, C/2010 D3
467Auckland Obs. in New Zealand, 1 in MPEC 2012-M33 -- C/2011 O1
I47Auger Obs. in Argentina, 7 in MPEC 2012-M33 -- C/2011 L4, C/2011 A3, C/2010 R1, C/2009 P1, C/2006 S3, 246P, 96P
A81Balzaretto Obs. in Italy, 1 in MPEC 2012-M33 -- C/2011 F1
C86Blanes Obs. in Spain, 5 in MPEC 2012-M33 -- C/2011 UF305, C/2011 L4, C/2011 F1, C/2009 P1, C/2006 S3
I99Blanquita Obs. in Spain, 5 in MPEC 2012-M33 -- C/2011 L4, C/2011 F1, C/2006 S3, 246P, 152P
235CAST Obs. in Italy, 4 in MPEC 2012-M33 -- C/2011 L4, C/2011 F1, C/2009 P1, C/2006 S3
I72Carpe-Noctem Obs., 4 in MPEC 2012-M33 -- C/2011 UF305, C/2011 F1, C/2010 R1, C/2006 S3
160Castelmartini Obs. in Italy, 13 in MPECs 2012-M32 & 2012-M33 -- 2012 LU7, C/2012 K5, 2012 JR17, C/2012 J1, 2012 DH61, C/2012 CH17, C/2011 F1, C/2010 S1, C/2010 R1, C/2008 S3, 329291, 153958, 246P
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2012-M32, 2012-M33 & 2012-M36 -- 2012 MV4, 2012 LD1, C/2012 J1, C/2012 CH17, C/2011 L4, C/2010 R1, 2004 CL, 20460, 3352, 2201, 152P, 117P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPECs 2012-M32 & 2012-M35 -- 2012 MY2, 2012 MS4, 2012 MN2, 2012 LW7, 2012 LU, 2012 LK9, 2012 LK2, 2012 LJ2, 2012 KX, 2012 KL18, 2012 JW11, 2012 JB16
A77Chante-Perdrix Obs. in France, 3 in MPEC 2012-M33 -- C/2012 K5, C/2010 R1, C/2006 S3
970Chelmsford Obs. in England, 1 in MPEC 2012-M33 -- C/2011 F1
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2012-M33 -- C/2012 L1, C/2012 K5, C/2012 K1, C/2011 L4, C/2010 S1
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2012-M33 -- C/2011 UF305, C/2011 F1
I39Cruz del Sur Obs. in Argentina, 2 in MPECs 2012-M33 & 2012-M35 -- 2012 MS4, 96P
448Desert Moon Obs. in New Mexico, 3 in MPEC 2012-M32 -- 1999 YA, 277830, 248818
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2012-M36 -- 2012 MV4
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2012-M32 & 2012-M35 -- 2012 MS4, 2007 LC15
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-M35 -- 2012 MS4
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 2 in MPEC 2012-M33 -- C/2011 L4, C/2006 S3
E105Richard Miles in England via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-M33 -- 17P
157Frasso Sabino Obs. in Italy, 6 in MPEC 2012-M33 -- C/2012 L3, C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1, C/2012 J1
I88Fuensanta de Martos Obs., 3 in MPEC 2012-M33 -- C/2012 K5, C/2011 L4, C/2006 S3
203GiaGa Obs. in Italy, 2 in MPEC 2012-M33 -- C/2011 F1, C/2010 R1
B83Gieres Obs. in France, 3 in MPEC 2012-M33 -- C/2011 L4, C/2011 F1, C/2006 S3
E94Gisborne Obs. in New Zealand, 2 in MPECs 2012-M33 & 2012-M35 -- 2012 MS4, C/2011 O1
511Haute Provence Obs. in Germany, 4 in MPEC 2012-M33 -- C/2012 L2, C/2012 L1, C/2012 K5, C/2012 K1
C43Hoyerswerda Obs., 4 in MPEC 2012-M33 -- C/2011 UF305, C/2011 L4, C/2011 F1, C/2006 S3
857Iowa Robotic Obs. in Arizona, 2 in MPEC 2012-M33 -- C/2011 L4, 185P
D95Kurihara Obs. in Japan, 1 in MPEC 2012-M33 -- C/2011 L4
704LINEAR in New Mexico, 8 in MPECs 2012-M32, 2012-M33, 2012-M35 & 2012-M36 -- 2012 MV4, 2012 MS4, 2012 LU7, C/2010 R1, 2004 CL, 153958, 4034, 1221
130Lumezzane Obs. in Italy, 5 in MPEC 2012-M33 -- C/2012 L3, C/2012 L1, C/2012 K5, P/2012 K3, 257P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2012-M34 & 2012-M35 -- 2012 MS4, 2012 MR4
C10Maisoncelles Obs. in France, 7 in MPEC 2012-M33 -- C/2012 L3, C/2012 L1, C/2012 K8, C/2012 K5, C/2011 L4, C/2006 S3, 105P
232Masquefa Obs. in Spain, 7 in MPEC 2012-M33 -- C/2012 J1, C/2011 L4, C/2011 F1, C/2010 S1, C/2006 S3, 246P, 152P
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-M32 -- 2012 DG54
213Montcabre Obs. in Spain, 6 in MPEC 2012-M33 -- C/2012 K5, C/2012 J1, C/2011 L4, C/2011 F1, C/2010 S1, C/2006 S3
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2012-M32, 2012-M33, 2012-M34 & 2012-M36 -- 2012 MV4, 2012 MR4, P/2012 K3, 2004 CL
J93Mt. Tuffley Obs. in England, 2 in MPEC 2012-M33 -- C/2011 F1, C/2006 S3
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2012-M33 -- 185P
J47Nazaret Obs. in Spain, 5 in MPEC 2012-M33 -- C/2012 K5, C/2012 K1, C/2012 J1, C/2011 L4, 29P
I89Nerpio Obs. in Italy, 1 in MPEC 2012-M35 -- 2012 MS4
C47Nonndorf Obs. in Austria, 6 in MPEC 2012-M33 -- C/2012 L1, C/2012 K5, C/2012 J1, C/2011 UF305, C/2011 F1, C/2010 S1
C23Olmen Obs. in Belgium, 10 in MPEC 2012-M33 -- C/2012 L3, C/2012 K5, C/2012 K1, C/2012 J1, C/2012 B3, C/2012 A2, C/2011 UF305, C/2011 F1, C/2010 S1, C/2006 S3
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2012-M33 -- 246P, 105P, 74P
H23Pear Tree Obs. in Florida, 2 in MPECs 2012-M32 & 2012-M33 -- 2012 LU7, C/2006 S3
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2012-M33 -- C/2012 CH17
941Pla D'Arguines Obs. in Spain, 1 in MPEC 2012-M33 -- C/2012 K1
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 8 in MPECs 2012-M33 & 2012-M35 -- 2012 MS4, P/2012 K3, C/2012 F6, C/2012 E3, P/2004 H3, 185P, 160P, 152P
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 10 in MPEC 2012-M33 -- C/2011 O1, C/2010 R1, C/2006 S3, 260P, 257P, 189P, 185P, 152P, 123P, 74P
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2012-M35 -- 2012 MS4
C09Rouet Obs. in France, 3 in MPEC 2012-M33 -- C/2012 L1, C/2012 K5, C/2012 J1
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2012-M35 & 2012-M36 -- 2012 MV4, 2012 MS4
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2012-M33 -- C/2012 J1
H36Sandlot Obs. in Kansas, 2 in MPECs 2012-M32 & 2012-M35 -- 2012 MY2, 2012 MS4
B56Sant Pere Obs. in Spain, 2 in MPEC 2012-M33 -- C/2011 F1, C/2006 S3
B38Santa Mama Obs. in Italy, 3 in MPEC 2012-M32 -- 85818, 7889, 5587
204Schiaparelli Obs. in Italy, 2 in MPECs 2012-M35 & 2012-M36 -- 2012 MV4, 2012 MS4
033Schwarzschild Obs. in Germany, 1 in MPEC 2012-M33 -- C/2011 L4
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-M33 -- 185P
291Spacewatch 1.8m telescope in Arizona, 18 in MPECs 2012-M32, 2012-M33, 2012-M34 & 2012-M35 -- 2012 MY2, 2012 MU2, 2012 MS4, 2012 MR4, 2012 MQ, 2012 LU7, 2012 LT7, 2012 LQ7, 2012 LK9, 2012 LK2, 2012 LG4, 2012 LF11, 2012 LD13, 2012 HR2, 2010 FQ, 2009 QO, 2008 WM64, 185P
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2012-M32, 2012-M35 & 2012-M36 -- 2012 MV4, 2012 MS4, 2006 BZ7
A71Stixendorf Obs. in Austria, 13 in MPEC 2012-M33 -- C/2012 L3, C/2012 L2, C/2012 L1, C/2012 K5, P/2012 K3, C/2012 K1, C/2012 J1, C/2011 L4, C/2011 KP36, C/2011 F1, C/2006 S3, 185P, 152P
954Teide Obs. in the Canary Islands, 1 in MPEC 2012-M35 -- 2012 MS4
926Tenagra II Obs. in Arizona, 1 in MPEC 2012-M33 -- C/2011 L4
C35Terrassa Obs., 3 in MPEC 2012-M33 -- C/2011 L4, C/2010 S1, C/2006 S3
B51Vallauris Obs. in France, 7 in MPEC 2012-M33 -- C/2012 L3, C/2012 L1, C/2012 K5, C/2012 J1, C/2010 S1, C/2010 R1, C/2006 S3
718Wiggins Obs. in Utah, 2 in MPEC 2012-M32 -- 2012 LG11, 1685
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2012-M32 -- 2012 LZ1, 2012 LG11, 329437
C42Xingming Obs. in China, 1 in MPEC 2012-M33 -- C/2011 L4
367Yatsuka Obs. in Japan, 5 in MPEC 2012-M33 -- C/2011 UF305, C/2011 L4, C/2011 F1, C/2009 P1, C/2006 S3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 June '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 MY2JPL Sentry15522072-2111231.3e-05-5.91-6.390JPL: "Analysis based on 30 observations spanning 2.9973 days (2012-Jun-19.18552 to 2012-Jun-22.18284)." Diameter approximately 0.019 km. from mean, weighted H=26.2.
NEODyS15522080-208541.19e-06-6.88-7.210NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2012-06-19.186 to 2012-06-22.184."
2012 MU2JPL Sentry15522015-209859.1e-05-0.89-0.891JPL: "Analysis based on 36 observations spanning 4.0143 days (2012-Jun-18.16459 to 2012-Jun-22.17892)." Diameter approximately 0.242 km. from mean, weighted H=20.7.
NEODyS15522015-206749.8e-05-0.85-0.851NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2012-06-18.165 to 2012-06-22.180."
2012 LK9JPL Sentry15522047-209051.0e-08-4.24-4.620JPL: "Analysis based on 49 observations spanning 8.8823 days (2012-Jun-12.35378 to 2012-Jun-21.23611)." Diameter approximately 1.100 km. from mean, weighted H=17.5.
NEODyS15522020-205942.43e-09-4.44-4.540NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2012-06-12.355 to 2012-06-21.237."
2012 LR1JPL Sentry1552208013.9e-09-6.01-6.010JPL: "Analysis based on 92 observations spanning 11.814 days (2012-Jun-09.40456 to 2012-Jun-21.21871)." Diameter approximately 0.280 km. from mean, weighted H=20.4.

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 June '12

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

1720Grabbed MPEC 2012-M33 - Observations and Orbits of Comets - see above
Grabbed MPEC 2012-M34 - 2012 MR4 - see above
Grabbed MPEC 2012-M35 - 2012 MS4 - see above
Grabbed MPEC 2012-M36 - 2012 MV4 - see above
1555Generated Traffic Report
1552Noted that JPL Sentry has updated its 2012 LK9 risk assessment - see above
Noted that NEODyS has updated its 2012 LK9 risk assessment - see above
Noted that JPL Sentry has updated its 2012 LR1 risk assessment - see above
Noted that JPL Sentry has updated its 2012 MU2 risk assessment - see above
Noted that NEODyS has updated its 2012 MU2 risk assessment - see above
Noted that JPL Sentry has updated its 2012 MY2 risk assessment - see above
Noted that NEODyS has updated its 2012 MY2 risk assessment - see above
Grabbed MPEC 2012-M32 - Daily Orbit Update - see above