Contents  on 6 October '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 6 October '13

Five objects reported inside ten LD

There are five objects reported traveling within ten lunar distances (LD) of Earth today. Radar target 2013 SU24 is outbound from 5.19 to 5.54 LD, risk-listed intruder 2013 RZ53 from 5.84 to 6.16 LD, and 2013 TQ4 from 6.98 to 8.03 LD, while 2013 TO4 is inbound from 8.85 to 7.50 LD and 2013 SC21 from 9.50 to 8.85 LD.

Approaching our neighborhood next, radar target 2001 AV43 arrives inside ten LD on November 6th.

This report was generated at 1518 UTC.

Update:  The Minor Planet Center reports "major" network issues such that "Issuance of MPECs will be delayed and last night's DOU MPEC has been abandoned."



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 6 October '13

The MPC's NEO Confirmation Page has 61 listings

When last checked at 2053 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 61 objects listed. Of these, eighteen were "one nighters." The Tracking News counted a total of 64 listings on the NEOCP on this day.

New MPECs  on 6 October '13

Minor Planet Electronic Circulars

There were sixteen MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-T54 - "22:42 UT" - 2013 TC6


MPEC 2013-T53 - "22:37 UT" - 2013 TD6


MPEC 2013-T52 - "22:33 UT" - 2013 TB6


MPEC 2013-T51 - "22:27 UT" - 2013 TA6


MPEC 2013-T50 - "22:22 UT" - 2013 TZ5


MPEC 2013-T49 - "22:18 UT" - 2013 TY5


MPEC 2013-T48 - "22:13 UT" - 2013 TX5


MPEC 2013-T47 - "22:08 UT" - 2013 TW5


MPEC 2013-T46 - "22:03 UT" - 2013 TV5


MPEC 2013-T45 - "21:59 UT" - 2013 TT5


MPEC 2013-T44 - "21:54 UT" - 2013 TS5


MPEC 2013-T43 - "21:49 UT" - 2013 TR5


MPEC 2013-T42 - "21:44 UT" - 2013 TQ5


MPEC 2013-T41 - "21:36 UT" - 2003 UP24


MPEC 2013-T40 - "21:31 UT" - 2008 TY3


MPEC 2013-T39 - "21:09 UT" - 2009 VA1

Observers  on 6 October '13

A total of 26 observers appeared in this day's MPECs.

CodeObserver / observatory
703Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2013-T43, 2013-T44, 2013-T46, 2013-T48, 2013-T50, 2013-T52 & 2013-T54 -- 2013 TZ5, 2013 TX5, 2013 TV5, 2013 TS5, 2013 TR5, 2013 TC6, 2013 TB6
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2013-T44 -- 2013 TS5
G58Chabot Obs. in northern California, 1 in MPEC 2013-T48 -- 2013 TX5
448Desert Moon Obs. in New Mexico, 3 in MPECs 2013-T43, 2013-T44 & 2013-T54 -- 2013 TS5, 2013 TR5, 2013 TC6
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2013-T50 & 2013-T51 -- 2013 TZ5, 2013 TA6
J95Great Shefford Obs. in England, 1 in MPEC 2013-T42 -- 2013 TQ5
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2013-T43 -- 2013 TR5
246KLENOT in the Czech Republic, 1 in MPEC 2013-T43 -- 2013 TR5
V37LCOGT Fort Davis in Texas, 2 in MPECs 2013-T43 & 2013-T53 -- 2013 TR5, 2013 TD6
K93LCOGT Sutherland C in South Africa, 1 in MPEC 2013-T44 -- 2013 TS5
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-T44 -- 2013 TS5
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2013-T40 & 2013-T45 -- 2013 TT5, 2008 TY3
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2013-T41, 2013-T42, 2013-T43, 2013-T46, 2013-T48, 2013-T49, 2013-T50, 2013-T51, 2013-T52, 2013-T53 & 2013-T54 -- 2013 TZ5, 2013 TY5, 2013 TX5, 2013 TV5, 2013 TR5, 2013 TQ5, 2013 TD6, 2013 TC6, 2013 TB6, 2013 TA6, 2003 UP24
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2013-T40, 2013-T45, 2013-T49 & 2013-T51 -- 2013 TY5, 2013 TT5, 2013 TA6, 2008 TY3
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2013-T51 -- 2013 TA6
461SZTE Asteroid Program in Hungary, 1 in MPEC 2013-T43 -- 2013 TR5
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2013-T44, 2013-T46, 2013-T52 & 2013-T54 -- 2013 TV5, 2013 TS5, 2013 TC6, 2013 TB6
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2013-T43 -- 2013 TR5
H36Sandlot Obs. in Kansas, 1 in MPEC 2013-T44 -- 2013 TS5
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2013-T43 -- 2013 TR5
033Schwarzschild Obs. in Germany, 1 in MPEC 2013-T47 -- 2013 TW5
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-T47 -- 2013 TW5
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2013-T40, 2013-T44, 2013-T45, 2013-T47, 2013-T49 & 2013-T53 -- 2013 TY5, 2013 TW5, 2013 TT5, 2013 TS5, 2013 TD6, 2008 TY3
673!Jana Pittichova via Table Mtn. Obs. in southern California, 1 in MPEC 2013-T43 -- 2013 TR5
926Tenagra II Obs. in Arizona, 9 in MPECs 2013-T39, 2013-T41, 2013-T42, 2013-T43, 2013-T48, 2013-T50, 2013-T51, 2013-T52 & 2013-T53 -- 2013 TZ5, 2013 TX5, 2013 TR5, 2013 TQ5, 2013 TD6, 2013 TB6, 2013 TA6, 2009 VA1, 2003 UP24
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-T47 -- 2013 TW5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 October '13

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2106 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 TG4NEODyS1515R E M O V E D-
2013 SW24NEODyS1515R 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 6 October '13

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

0007 10/7Grabbed MPEC 2013-T39 - 2009 VA1 - see above
Grabbed MPEC 2013-T40 - 2008 TY3 - see above
Grabbed MPEC 2013-T41 - 2003 UP24 - see above
Grabbed MPEC 2013-T42 - 2013 TQ5 - see above
Grabbed MPEC 2013-T43 - 2013 TR5 - see above
Grabbed MPEC 2013-T44 - 2013 TS5 - see above
Grabbed MPEC 2013-T45 - 2013 TT5 - see above
Grabbed MPEC 2013-T46 - 2013 TV5 - see above
Grabbed MPEC 2013-T47 - 2013 TW5 - see above
Grabbed MPEC 2013-T48 - 2013 TX5 - see above
Grabbed MPEC 2013-T49 - 2013 TY5 - see above
Grabbed MPEC 2013-T50 - 2013 TZ5 - see above
Grabbed MPEC 2013-T51 - 2013 TA6 - see above
Grabbed MPEC 2013-T52 - 2013 TB6 - see above
Grabbed MPEC 2013-T53 - 2013 TD6 - see above
Grabbed MPEC 2013-T54 - 2013 TC6 - see above
1518Generated Traffic Report
1515Noted that NEODyS has removed 2013 SW24 as an impact risk - see above
Noted that NEODyS has removed 2013 TG4 as an impact risk - see above