Contents  on 31 August '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 31 August '13

No objects reported inside ten LD

No asteroids are reported to be within ten lunar distances (LD) of our planet today, and none are known to be coming in until mid-November.

This report was updated at 2100 UTC to note the recovery of distant 2012 UV136 (MPEC). Today's first traffic report was generated at 1452 (revised at 1520) UTC with follow-up in today's DOU MPEC for departed objects 2013 QG11, 2013 PJ10, and radar target 277475 2005 WK4 plus observation of distant radar target 152664 1998 FW4. Earlier the MPC announced the recovery of distant 2012 LA11 (MPEC).



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 31 August '13

The MPC's NEO Confirmation Page has 63 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 63 objects listed. Of these, 28 were "one nighters." So far The Tracking News has counted a total of 73 listings on the NEOCP today.

New MPECs  on 31 August '13

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-Q61 - "21:03 UT" - 2013 QE16


MPEC 2013-Q60 - "20:59 UT" - 2013 QD16


MPEC 2013-Q59 - "18:22 UT" - 2013 QY1


MPEC 2013-Q58 - "14:56 UT" - 2012 UV136


<< DOU on 31 Aug. '13 >>  MPEC 2013-Q57 - "06:03 UT" - Daily Orbit Update


MPEC 2013-Q56 - "02:56 UT" - 2012 LA11

Observers  on 31 August '13

A total of 26 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPECs 2013-Q57 & 2013-Q60 -- 2013 QV1, 2013 QD16, 2013 PZ38, 2013 PX6, 2013 PV6, 2013 PO43, 2013 PN43, 2013 PC7, 2013 PB39, 2013 OS3, 2013 OP3, 2013 OM9, 2013 NX23, 2013 MP11
U82CS3 Palmer Divide Station in southern California, 2 in MPEC 2013-Q57 -- 2013 OM9, 329437
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPECs 2013-Q57 & 2013-Q59 -- 2013 QY1, 2013 PV2, 2013 PV13, 2013 PH10, 2000 SV20, 85628, 366833, 361123, 358744, 349925, 7025
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2013-Q61 -- 2013 QE16
987Isle of Man Obs. on the Isle of Man, 1 in MPEC 2013-Q57 -- 137126
W85LCOGT Cerro Tololo A in Chile, 1 in MPEC 2013-Q60 -- 2013 QD16
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2013-Q57 -- 2010 OQ1
5682David Tholen's team on Mauna Kea in Hawaii, 5 in MPECs 2013-Q56, 2013-Q57 & 2013-Q58 -- 2013 FX7, 2013 FC8, 2013 EP89, 2012 UV136, 2012 LA11
568;program code ";" on Mauna Kea in Hawaii, 1 in MPEC 2013-Q57 -- 2006 AN4
568_Marco Micheli on Mauna Kea in Hawaii, 6 in MPECs 2013-Q57, 2013-Q60 & 2013-Q61 -- 2013 QN11, 2013 QE16, 2013 QD16, 2013 PB7, 2013 ND24, 2005 YV55
152Moletai Obs. in Lithuania, 1 in MPEC 2013-Q57 -- 108906
474Mt. John Obs. in New Zealand, 19 in MPEC 2013-Q57 -- 2013 QM10, 2013 QL10, 2013 QG11, 2013 QF11, 2013 QE11, 2013 QD11, 2013 QC11, 2013 QB11, 2013 PV2, 2013 PU31, 2013 PH10, 2013 PF67, 2013 PF21, 2013 PE26, 2013 PD21, 2013 PC39, 2013 NV6, 2013 MZ5, 2011 OJ5
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2013-Q60 -- 2013 QD16
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2013-Q57 -- 2013 JE1
A13Naef Obs. in Switzerland, 1 in MPEC 2013-Q57 -- 137126
F51Pan-STARRS 1 (PS1) in Hawaii, 15 in MPECs 2013-Q57, 2013-Q59 & 2013-Q61 -- 2013 QY1, 2013 QM10, 2013 QE16, 2013 BO76, 2012 XR134, 2010 RT11, 2008 PH9, 2006 KD1, 2002 RH52, 52768, 250697, 250620, 200840, 171486, 141851
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2013-Q57 -- 2013 QJ10, 2013 PX6, 2013 HG20, 2010 CF19, 329437
D03Rantiga Obs., 1 in MPEC 2013-Q57 -- 2013 PC7
Y00SONEAR Obs. in Brazil, 30 in MPEC 2013-Q57 -- 2013 PX6, 2013 OM9, 2013 KR1, 2010 UX95, 2010 TN54, 2010 CF19, 2009 WE253, 2009 CP5, 2006 QA58, 2002 RH52, 85804, 54789, 52762, 368664, 303262, 277475, 271480, 250620, 242450, 20826, 17182, 159609, 152664, 143678, 137126, 136900, 8013, 4953, 3691, 3352
461SZTE Asteroid Program in Hungary, 1 in MPEC 2013-Q57 -- 162510
233San Vito Obs. in Italy, 1 in MPEC 2013-Q57 -- 137126
H36Sandlot Obs. in Kansas, 3 in MPECs 2013-Q57, 2013-Q59 & 2013-Q60 -- 2013 QY1, 2013 QV1, 2013 QD16
204Schiaparelli Obs. in Italy, 9 in MPECs 2013-Q57 & 2013-Q60 -- 2013 QD16, 2013 PJ10, 2013 OM9, 2013 OG, 2013 NV, 2013 NP11, 2013 HG20, 2011 NP, 366833
033Schwarzschild Obs. in Germany, 4 in MPECs 2013-Q57 & 2013-Q60 -- 2013 QG11, 2013 QD16, 2013 QB11, 2013 HG20
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2013-Q60 & 2013-Q61 -- 2013 QE16, 2013 QD16
I76Tesla Obs. in Spain, 3 in MPEC 2013-Q57 -- 2013 QJ10, 2013 PX6, 2013 HG20
718Wiggins Obs. in Utah, 1 in MPEC 2013-Q57 -- 2013 QJ10
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2013-Q61 -- 2013 QE16
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 31 August '13

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 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 QN11JPL Sentry14482069-2109201.5e-08-7.09-7.760JPL: "Analysis based on 20 observations spanning .94363 days (2013-Aug-29.4694 to 2013-Aug-30.413026)." Diameter approximately 0.089 km. from mean, weighted H=22.9.

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 31 August '13

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

2203Grabbed MPEC 2013-Q61 - 2013 QE16 - see above
2100Grabbed MPEC 2013-Q60 - 2013 QD16 - see above
Updated Traffic Report
1836Grabbed MPEC 2013-Q59 - 2013 QY1 - see above
1625Grabbed MPEC 2013-Q58 - 2012 UV136 - see above
1448Noted that JPL Sentry has updated its 2013 QN11 risk assessment - see above
Grabbed MPEC 2013-Q57 - Daily Orbit Update - see above
0424Grabbed MPEC 2013-Q56 - 2012 LA11 - see above