Contents  on 21 June '10

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.

NEOCP Activity  on 21 June '10

The MPC's NEO Confirmation Page has 10 listings: 8 new, 2 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight new and two updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of fifteen listings on the NEOCP at some point 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 21 June '10

Minor Planet Electronic Circulars

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


MPEC 2010-M37 - "15:11 UT" - 2010 MQ1


MPEC 2010-M36 - "15:03 UT" - 2010 MP1


MPEC 2010-M35 - "14:55 UT" - 2010 LJ109


<< DOU on 21 June '10 >>  MPEC 2010-M34 - "06:13 UT" - Daily Orbit Update

Observers  on 21 June '10

A total of 21 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2010-M34 -- 2010 LK61, 2010 JL77, 2010 DJ56
I99Blanquita Obs. in Spain, 1 in MPEC 2010-M34 -- 2010 GA34
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2010-M34 -- 2010 LM68, 154590
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-M34 -- 2009 WC26
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2010-M34 -- 2003 QB90
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2010-M36 -- 2010 MP1
704LINEAR in New Mexico, 5 in MPECs 2010-M34 & 2010-M36 -- 2010 MP1, 2010 CL18, 2009 WC26, 2006 KL21, 2006 BN6
J75La Sagra Obs. in Spain, 3 in MPEC 2010-M34 -- 85989, 159609, 7977
H13Lenomiya Obs. in Arizona, 2 in MPEC 2010-M34 -- 2010 LN14, 2010 LM68
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2010-M35 & 2010-M37 -- 2010 MQ1, 2010 LJ109
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-M35 -- 2010 LJ109
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2010-M34 & 2010-M37 -- 2010 MQ1, 2002 OS4, 2000 KO44, 19764
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-M36 -- 2010 MP1
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-M36 -- 2010 MP1
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-M34 -- 2010 LY63
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-M36 -- 2010 MP1
204Schiaparelli Obs. in Italy, 2 in MPEC 2010-M34 -- 2010 LE68, 2010 EH20
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2010-M34 & 2010-M35 -- 2010 LJ14, 2010 LJ109, 2010 JG87, 2010 GX62
926Tenagra II Obs. in Arizona, 1 in MPEC 2010-M36 -- 2010 MP1
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-M36 -- 2010 MP1
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2010-M34 -- 2009 XC2, 85989
C51WISE in Earth polar orbit, 15 in MPECs 2010-M34 & 2010-M35 -- 2010 LJ109, 2009 XC2, 2009 UV18, 2008 WB59, 2005 XD1, 2005 CR37, 2004 RA11, 2002 YF4, 2001 WT1, 2001 AD2, 96189, 89959, 153271, 9162, 5587
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 June '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 CLOMON (backup) 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
2010 MF1JPL Sentry0158210412.5e-08-5.15-5.150JPL: "Analysis based on 31 observations spanning 1.8813 days (2010-Jun-18.5558 to 2010-Jun-20.43713)." Diameter approximately 0.460 km. from mean, weighted H=19.4.
2010 MRNEODyS0214R E M O V E D-
JPL Sentry0158R E M O V E DJPL: Risk listing removed at 1000 UTC 20 June.
2010 LV108NEODyS14212026-2087123.08e-07-5.16-5.300NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2010/06/14.275 to 2010/06/20.561."
JPL Sentry01582033-2108177.0e-07-4.88-5.170JPL: "Analysis based on 16 observations spanning 6.2854 days (2010-Jun-14.27451 to 2010-Jun-20.55991)." Diameter approximately 0.111 km. from mean, weighted H=22.4.
2010 LU108NEODyS14212048-208991.55e-08-4.96-5.250NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2010/06/15.994 to 2010/06/20.395."

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 21 June '10

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

1536Grabbed MPEC 2010-M36 - 2010 MP1 - see above
Grabbed MPEC 2010-M37 - 2010 MQ1 - see above
1505Grabbed MPEC 2010-M35 - 2010 LJ109 - see above
1421Noted that NEODyS has posted 2010 LU108 as an impact risk - see above
Noted that NEODyS has posted 2010 LV108 as an impact risk - see above
Grabbed MPEC 2010-M34 - Daily Orbit Update - see above
0214Noted that NEODyS has removed 2010 MR as an impact risk - see above
0158Noted that JPL Sentry has posted 2010 LV108 as an impact risk - see above
Noted that JPL Sentry has posted 2010 MF1 as an impact risk - see above
Noted that JPL Sentry has removed 2010 MR as an impact risk - see above