Contents  on 13 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 13 October '13

Three objects reported inside ten LD

Three visitors are reported flying within ten lunar distances (LD) of our planet today. 2013 TM127 enters Earth's Hill sphere, traveling from 4.01 to 3.03 LD. Risk-listed 2013 TX68 comes its closest to Earth this time around, reaching 5.41 LD at 0810 UT. And risk-listed intruder 2013 RZ53 is outbound from 8.10 to 8.43 LD.

Radar target 2001 AV43 arrives inside ten LD on November 6th and radar target 2013 NJ arrives on November 19th.

This report was generated at 1737 UTC with the discovery of already departed 2013 TV132 (MPEC), and with follow-up in today's DOU MPEC for four departed objects: intruder 2013 TL127, 2013 TG6, 2013 TP4, and 2013 PR43.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. 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 13 October '13

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of 31 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 13 October '13

Minor Planet Electronic Circulars

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


MPEC 2013-T100 - "23:48 UT" - 2011 CQ4


MPEC 2013-T99 - "14:57 UT" - 2013 TV132


MPEC 2013-T98 - "14:52 UT" - 2013 TU132


MPEC 2013-T97 - "14:48 UT" - 2013 TT132


MPEC 2013-T96 - "14:43 UT" - 2013 TS132


MPEC 2013-T95 - "14:38 UT" - 2013 TR132


<< DOU on 13 Oct. '13 >>  MPEC 2013-T94 - "06:06 UT" - Daily Orbit Update

Observers  on 13 October '13

A total of 21 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 16 in MPECs 2013-T94, 2013-T96, 2013-T97 & 2013-T100 -- 2013 TX5, 2013 TT132, 2013 TS132, 2013 TN127, 2013 TL69, 2013 TH69, 2013 TC6, 2013 TB80, 2013 SR24, 2013 SO19, 2013 SK19, 2013 RJ74, 2013 PR43, 2013 PO43, 2011 CQ4, 137120
300Bisei Spaceguard Center in Japan, 1 in MPEC 2013-T94 -- 2013 SV24
703Catalina Sky Survey (CSS) in Arizona, 15 in MPEC 2013-T94 -- 2013 RM43, 2012 TS, 2011 WU95, 2008 UN90, 2003 WX25, 1998 YB8, 1996 TP6, 371660, 350988, 223456, 194126, 162913, 162510, 11398, 5863
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPEC 2013-T94 -- 2013 TN69, 2013 TG6, 2013 TC6, 2013 TB80, 2013 ST, 2013 SA20, 2013 OP3, 2005 WR54
448Desert Moon Obs. in New Mexico, 6 in MPEC 2013-T94 -- 2013 TL127, 2013 SL30, 2013 QJ10, 2011 WM2, 2008 JR26, 39565
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 1 in MPEC 2013-T96 -- 2013 TS132
D00ISON-Kislovodsk Obs., 2 in MPEC 2013-T94 -- 2011 UW158, 3361
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 8 in MPEC 2013-T94 -- 2013 OO2, 2013 OG, 2013 NP8, 2013 NP11, 2013 LF7, 2013 ER89, 2011 WU95, 2004 AS1
D95Kurihara Obs. in Japan, 1 in MPEC 2013-T94 -- 250620
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2013-T97 -- 2013 TT132
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2013-T94 & 2013-T98 -- 2013 TU132, 2013 TP4
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-T94 -- 3908
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2013-T94, 2013-T95, 2013-T98 & 2013-T99 -- 2013 TV132, 2013 TU132, 2013 TR132, 2010 SG15, 2008 HB38, 168378, 6239, 3691, 3361
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPECs 2013-T94, 2013-T96 & 2013-T97 -- 2013 TT132, 2013 TS132, 2013 BO76
D29Purple Mtn. Obs. Xuyi Station in China, 5 in MPEC 2013-T94 -- 2013 SW24, 2013 MX5, 2010 TN54, 355256, 3361
D03Rantiga Obs., 1 in MPEC 2013-T94 -- 257838
H36Sandlot Obs. in Kansas, 2 in MPECs 2013-T94 & 2013-T95 -- 2013 TS4, 2013 TR132
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2013-T94 -- 2013 TD4, 2008 TA1, 2000 HW23, 373135
291Spacewatch 1.8m telescope in Arizona, 16 in MPECs 2013-T94, 2013-T96, 2013-T97 & 2013-T98 -- 2013 TW68, 2013 TU132, 2013 TT5, 2013 TT132, 2013 TS132, 2013 TQ12, 2013 SX19, 2013 SL19, 2013 SC20, 2013 SA20, 2013 RN21, 2013 RK43, 2013 RJ74, 2013 RB74, 2013 RB6, 2013 NW
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2013-T94 -- 2013 RH74
926Tenagra II Obs. in Arizona, 23 in MPECs 2013-T94, 2013-T96, 2013-T97 & 2013-T98 -- 2013 TZ5, 2013 TY5, 2013 TX5, 2013 TU132, 2013 TT5, 2013 TT132, 2013 TS4, 2013 TS132, 2013 TR5, 2013 TQ5, 2013 TO69, 2013 TN69, 2013 TL69, 2013 TJ6, 2013 TG6, 2013 TF6, 2013 TD6, 2013 TB6, 2013 TA6, 2013 SL30, 2013 SL20, 2012 TS, 2003 ND
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 October '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 TV132JPL Sentry17362074-2106131.9e-05-5.70-5.710JPL: "Analysis based on 19 observations spanning 1.0358 days (2013-Oct-12.39906 to 2013-Oct-13.43485)." Diameter approximately 0.018 km. from mean, weighted H=26.4.
NEODyS17362078-210371.59e-05-5.77-5.780NEODyS: "Based on 20 optical observations (of which 1 are rejected as outliers) from 2013-10-12.400 to 2013-10-13.436."
2013 TP4JPL Sentry1617202613.8e-05-4.57-4.570JPL: "Analysis based on 21 observations spanning 9.0740 days (2013-Oct-03.22944 to 2013-Oct-12.30343)." Diameter approximately 0.012 km. from mean, weighted H=27.3.
NEODyS16172026-202613.85e-05-4.56-4.560NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2013-10-03.230 to 2013-10-12.304."

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 13 October '13

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

2359Grabbed MPEC 2013-T100 - 2011 CQ4 - see above
1737Generated Traffic Report
1736Noted that JPL Sentry has posted 2013 TV132 as an impact risk - see above
Noted that NEODyS has posted 2013 TV132 as an impact risk - see above
1617Noted that JPL Sentry has updated its 2013 TP4 risk assessment - see above
Noted that NEODyS has updated its 2013 TP4 risk assessment - see above
Grabbed MPEC 2013-T94 - Daily Orbit Update - see above
Grabbed MPEC 2013-T95 - 2013 TR132 - see above
Grabbed MPEC 2013-T96 - 2013 TS132 - see above
Grabbed MPEC 2013-T97 - 2013 TT132 - see above
Grabbed MPEC 2013-T98 - 2013 TU132 - see above
Grabbed MPEC 2013-T99 - 2013 TV132 - see above