Contents  on 29 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 29 August '13

One object reported inside ten LD

One natural object is reported passing within ten lunar distances (LD) of Earth today. Newly announced 2013 QG11 is outbound from 8.02 to 9.24 LD, having passed our planet at 5.50 LD four days ago. No other objects are known to be coming inside ten LD until mid-November.

This report was updated at 2230 UTC with new discovery 2013 QG11 (MPEC). Today's first traffic report was generated at 1528 UTC with follow-up in today's DOU MPEC for departed object 2013 PR43.



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 29 August '13

The MPC's NEO Confirmation Page has 49 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 49 objects listed. Of these, 35 were "one nighters." So far The Tracking News has counted a total of 70 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 29 August '13

Minor Planet Electronic Circulars

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


MPEC 2013-Q52 - "22:51 UT" - 2013 QH11


MPEC 2013-Q51 - "19:45 UT" - 2013 QG11


MPEC 2013-Q50 - "19:39 UT" - 2013 QF11


MPEC 2013-Q49 - "19:34 UT" - 2013 QE11


MPEC 2013-Q48 - "19:26 UT" - 2013 QD11


MPEC 2013-Q47 - "19:21 UT" - 2013 QC11


MPEC 2013-Q46 - "19:15 UT" - 2013 QB11


<< DOU on 29 Aug. '13 >>  MPEC 2013-Q45 - "06:02 UT" - Daily Orbit Update

Observers  on 29 August '13

A total of 28 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPECs 2013-Q45, 2013-Q46, 2013-Q47, 2013-Q48, 2013-Q49, 2013-Q50, 2013-Q51 & 2013-Q52 -- 2013 QH11, 2013 QG11, 2013 QF11, 2013 QE11, 2013 QD11, 2013 QC11, 2013 QB11, 2013 PX6, 2013 PU13, 2013 PR43, 2013 PD39, 2013 OO5, 343166, 312473
C77Bernezzo Obs. in Italy, 2 in MPECs 2013-Q45 & 2013-Q50 -- 2013 QF11, 2013 PX6
300Bisei Spaceguard Center in Japan, 3 in MPEC 2013-Q45 -- 285263, 163249, 137199
493Calar Alto Obs. in Spain, 2 in MPECs 2013-Q45 & 2013-Q52 -- 2013 QH11, 203217
G30Casselman Obs., 1 in MPEC 2013-Q45 -- 52762
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2013-Q45, 2013-Q47, 2013-Q50 & 2013-Q51 -- 2013 QG11, 2013 QF11, 2013 QC11, 2013 PR43, 2013 BO76, 2012 XR134, 2009 CP5, 2003 RM, 2002 MT1, 276786, 275677, 26166, 247517, 4197, 4183
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 21 in MPECs 2013-Q45, 2013-Q46, 2013-Q47, 2013-Q48 & 2013-Q49 -- 2013 QU1, 2013 QK6, 2013 QE11, 2013 QD11, 2013 QC11, 2013 QB11, 2013 PC39, 2013 OP3, 2013 OO5, 2013 LE16, 2013 CE129, 2013 BF18, 2008 XP2, 2006 KD1, 2005 WR54, 351278, 349074, 333889, 329915, 307070, 154807
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2013-Q47 -- 2013 QC11
K20Danastro Obs., 1 in MPEC 2013-Q45 -- 2013 OM9
Z81Estrella de Mar Obs., 1 in MPEC 2013-Q45 -- 2001 QC34
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-Q47 -- 2013 QC11
J95Great Shefford Obs. in England, 4 in MPECs 2013-Q48, 2013-Q50, 2013-Q51 & 2013-Q52 -- 2013 QH11, 2013 QG11, 2013 QF11, 2013 QD11
B86Hagen Obs. in Germany, 3 in MPECs 2013-Q47, 2013-Q48 & 2013-Q50 -- 2013 QF11, 2013 QD11, 2013 QC11
Q64LCOGT Siding Spring B in New South Wales, 1 in MPEC 2013-Q46 -- 2013 QB11
I36Los Campitos Obs. in Argentina, 1 in MPEC 2013-Q52 -- 2013 QH11
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2013-Q45 & 2013-Q51 -- 2013 QG11, 2013 LT28
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2013-Q45, 2013-Q46, 2013-Q48 & 2013-Q49 -- 2013 QE11, 2013 QD11, 2013 QB11, 2005 EJ94, 18736
A13Naef Obs. in Switzerland, 3 in MPECs 2013-Q45 & 2013-Q52 -- 2013 QH11, 368664, 243147
Q61PROMPT A in New South Wales, 1 in MPEC 2013-Q45 -- 52768
I41Palomar Transient Factory (PTF) in southern California, 2 in MPEC 2013-Q45 -- 2003 OB4, 275677
F51Pan-STARRS 1 (PS1) in Hawaii, 7 in MPECs 2013-Q45 & 2013-Q52 -- 2013 QK6, 2013 QH11, 2013 KY1, 2005 XL80, 2001 QC34, 355256, 173689
Y00SONEAR Obs. in Brazil, 3 in MPECs 2013-Q45, 2013-Q47 & 2013-Q52 -- 2013 QH11, 2013 QC11, 2013 PX6
H36Sandlot Obs. in Kansas, 6 in MPECs 2013-Q46, 2013-Q47, 2013-Q48, 2013-Q50, 2013-Q51 & 2013-Q52 -- 2013 QH11, 2013 QG11, 2013 QF11, 2013 QD11, 2013 QC11, 2013 QB11
J84South Obs. in England, 1 in MPEC 2013-Q52 -- 2013 QH11
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2013-Q45 & 2013-Q52 -- 2013 QH11, 2013 PW14, 2013 PU31, 2013 PF26, 2013 PD39, 2013 PC39, 2008 CA5, 2001 TP103
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2013-Q50, 2013-Q51 & 2013-Q52 -- 2013 QH11, 2013 QG11, 2013 QF11
A79Zvezdno Obshtestvo Obs. in Bulgaria, 6 in MPECs 2013-Q46, 2013-Q47, 2013-Q48, 2013-Q50, 2013-Q51 & 2013-Q52 -- 2013 QH11, 2013 QG11, 2013 QF11, 2013 QD11, 2013 QC11, 2013 QB11
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-Q45 -- 2012 JR17
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 August '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 PD39JPL Sentry1527R E M O V E DJPL: Risk listing removed at 1201 UTC.
NEODyS1527R 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 29 August '13

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

2320Grabbed MPEC 2013-Q52 - 2013 QH11 - see above
2230Updated Traffic Report
2000Grabbed MPEC 2013-Q48 - 2013 QD11 - see above
Grabbed MPEC 2013-Q49 - 2013 QE11 - see above
Grabbed MPEC 2013-Q50 - 2013 QF11 - see above
Grabbed MPEC 2013-Q51 - 2013 QG11 - see above
1929Grabbed MPEC 2013-Q46 - 2013 QB11 - see above
Grabbed MPEC 2013-Q47 - 2013 QC11 - see above
1527Noted that JPL Sentry has removed 2013 PD39 as an impact risk - see above
Noted that NEODyS has removed 2013 PD39 as an impact risk - see above
Grabbed MPEC 2013-Q45 - Daily Orbit Update - see above