Contents  on 10 June '13

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 10 June '13

Two objects reported inside ten LD

There are two visitors reported to be within ten lunar distances (LD) of our planet today. Intruder 2013 LR6 is outbound from 3.90 to 6.03 LD, and 2013 LD2 comes its closest to Earth this time around, reaching 6.03 LD at 0936 UT.

This report was generated at 1313 UTC with follow-up in today's DOU MPEC for 2013 LD2.



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 10 June '13

The MPC's NEO Confirmation Page has 14 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fourteen objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 29 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 10 June '13

Minor Planet Electronic Circulars

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


MPEC 2013-L53 - "21:09 UT" - 2010 YC1


MPEC 2013-L52 - "11:17 UT" - 2010 TH19


MPEC 2013-L51 - "11:09 UT" - 2013 LH16


MPEC 2013-L50 - "11:04 UT" - 2013 LG16


MPEC 2013-L49 - "11:01 UT" - 2013 LF16


MPEC 2013-L48 - "10:57 UT" - 2013 LE16


MPEC 2013-L47 - "10:54 UT" - 2013 LD16


MPEC 2013-L46 - "10:44 UT" - 2010 VM1


MPEC 2013-L45 - "10:42 UT" - 2011 KE3


<< DOU on 10 June '13 >>  MPEC 2013-L44 - "06:07 UT" - Daily Orbit Update

Observers  on 10 June '13

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
Z95Astronomy for All Remote Obs., 1 in MPEC 2013-L48 -- 2013 LE16
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2013-L44 -- 152756
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2013-L44 & 2013-L48 -- 2013 LE16, 184990, 7839
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPECs 2013-L44 & 2013-L51 -- 2013 LQ6, 2013 LH16, 2013 LF1, 2013 LD2, 2013 LD1, 2013 LC1, 2013 JM7, 2000 GD147, 254417
W841program code 1 via DECam in Chile, 6 in MPECs 2013-L44 & 2013-L53 -- 2012 HW1, 2010 YC1, 2010 GY6, 2007 VX137, 279744, 100085
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2013-L44 -- 2013 LB2
006Fabra Obs. in Spain, 1 in MPEC 2013-L44 -- 285263
G27Fabra Obs., 1 in MPEC 2013-L44 -- 285263
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-L48 -- 2013 LE16
J95Great Shefford Obs. in England, 2 in MPECs 2013-L48 & 2013-L51 -- 2013 LH16, 2013 LE16
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 3 in MPEC 2013-L44 -- 2013 JX2, 2013 JM7, 2013 JL22
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2013-L44 -- 2013 LE7, 265032
W85LCOGT Cerro Tololo A in Chile, 2 in MPECs 2013-L46 & 2013-L50 -- 2013 LG16, 2010 VM1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2013-L45, 2013-L46, 2013-L49, 2013-L50 & 2013-L51 -- 2013 LH16, 2013 LG16, 2013 LF16, 2011 KE3, 2010 VM1
5682David Tholen's team on Mauna Kea in Hawaii, 4 in MPEC 2013-L44 -- 2013 LC2, 2013 LB2, 2013 CX129, 2013 CN222
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2013-L50 & 2013-L51 -- 2013 LH16, 2013 LG16
474Mt. John Obs. in New Zealand, 12 in MPEC 2013-L44 -- 2013 LF1, 2013 LE1, 2013 LD2, 2013 LD1, 2013 LC1, 2013 LB, 2013 LA, 2013 KL6, 2013 JB36, 2013 GH84, 2013 BC18, 2011 GD68
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2013-L45, 2013-L46, 2013-L47, 2013-L48 & 2013-L49 -- 2013 LF16, 2013 LE16, 2013 LD16, 2011 KE3, 2010 VM1
628Mulheim-Ruhr Obs. in Germany, 1 in MPEC 2013-L44 -- 354952
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPECs 2013-L50 & 2013-L51 -- 2013 LH16, 2013 LG16
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2013-L44 -- 2013 JR28, 2009 BL2, 285263, 163249
C95SATINO-1 in France, 2 in MPEC 2013-L44 -- 285263, 163249
461SZTE Asteroid Program in Hungary, 2 in MPECs 2013-L48 & 2013-L51 -- 2013 LH16, 2013 LE16
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2013-L51 -- 2013 LH16
H36Sandlot Obs. in Kansas, 4 in MPECs 2013-L44, 2013-L48, 2013-L49 & 2013-L51 -- 2013 LH16, 2013 LF16, 2013 LE16, 2013 KJ6
204Schiaparelli Obs. in Italy, 3 in MPECs 2013-L47, 2013-L48 & 2013-L51 -- 2013 LH16, 2013 LE16, 2013 LD16
E12Siding Spring Survey in New South Wales, 1 in MPEC 2013-L44 -- 2013 LD2
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2013-L44 & 2013-L51 -- 2013 LH16, 2013 LC7, 2013 LB1, 2013 KY1
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2013-L44, 2013-L46, 2013-L47, 2013-L48, 2013-L49 & 2013-L52 -- 2013 LF16, 2013 LE16, 2013 LD16, 2013 KM6, 2013 GG69, 2013 BC18, 2010 VM1, 2010 TH19, 2010 NJ1, 2010 LT108, 2008 MG1, 2002 QD7, 345646, 137126
673!program code "!" (10) via Table Mtn. Obs. in southern California, 1 in MPEC 2013-L44 -- 2013 JR28
A92Urseanu Obs. in Romania, 2 in MPEC 2013-L44 -- 285263, 137199
C90Vinyols Obs., 1 in MPEC 2013-L44 -- 285263
Z92West Park Obs., 1 in MPEC 2013-L44 -- 285263
718Wiggins Obs. in Utah, 2 in MPEC 2013-L44 -- 2013 JR28, 163249
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2013-L44 -- 2013 LB2, 2013 JR28, 2013 FD11
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-L48 -- 2013 LE16
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 June '13

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
2013 LH16JPL Sentry13002024-210982.2e-08-4.14-4.670JPL: "Analysis based on 30 observations spanning 2.7987 days (2013-Jun-07.47239 to 2013-Jun-10.27113)." Diameter approximately 0.656 km. from mean, weighted H=18.6.
2013 LE16JPL Sentry13002042-210781.6e-06-2.61-2.880JPL: "Analysis based on 40 observations spanning 2.9822 days (2013-Jun-07.23871 to 2013-Jun-10.22089)." Diameter approximately 0.647 km. from mean, weighted H=18.6.
NEODyS13002042-211071.44e-06-2.69-2.930NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2013-06-07.239 to 2013-06-10.222."

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 10 June '13

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

2111Grabbed MPEC 2013-L53 - 2010 YC1 - see above
1313Generated Traffic Report
1300Noted that JPL Sentry has posted 2013 LE16 as an impact risk - see above
Noted that NEODyS has posted 2013 LE16 as an impact risk - see above
Noted that JPL Sentry has posted 2013 LH16 as an impact risk - see above
Grabbed MPEC 2013-L44 - Daily Orbit Update - see above
Grabbed MPEC 2013-L45 - 2011 KE3 - see above
Grabbed MPEC 2013-L46 - 2010 VM1 - see above
Grabbed MPEC 2013-L47 - 2013 LD16 - see above
Grabbed MPEC 2013-L48 - 2013 LE16 - see above
Grabbed MPEC 2013-L49 - 2013 LF16 - see above
Grabbed MPEC 2013-L50 - 2013 LG16 - see above
Grabbed MPEC 2013-L51 - 2013 LH16 - see above
Grabbed MPEC 2013-L52 - 2010 TH19 - see above