Contents  on 10 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 10 October '13

Four objects reported inside ten LD

There are four objects reported to be within ten lunar distances (LD) of our planet today. 2013 TO4 is outbound from 6.67 to 7.66 LD, risk-listed intruder 2013 RZ53 from 7.13 to 7.45 LD, and radar target 2013 SU24 from 7.98 to 9.05 LD, while risk-listed 2013 TX68 comes inside ten LD, passing from 11.85 to 9.15 LD.

Radar target 2001 AV43 arrives inside ten LD on November 6th.

This report was generated at 1529 UTC with follow-up in today's DOU MPEC for 2013 TX68 and departed objects 2013 TP4 (risk listed, first follow-up) and 2013 RY80 (more than doubling its observation arc to 23.83 days), plus astrometry for distant 2006 VV2.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. "Distant" is used to describe objects that have come within ten LD since this reporting began (2007) but are not so close during this passage or apparition. 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 October '13

The MPC's NEO Confirmation Page has 6 listings

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

Minor Planet Electronic Circulars

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


MPEC 2013-T87 - "18:01 UT" - 2013 RD32 = 2004 RS331


MPEC 2013-T86 - "16:21 UT" - 2013 TB80


MPEC 2013-T85 - "16:15 UT" - 2013 TA80


<< DOU on 10 Oct. '13 >>  MPEC 2013-T84 - "06:04 UT" - Daily Orbit Update


MPEC 2013-T83 - "04:47 UT" - 2012 VE37


MPEC 2013-T82 - "02:44 UT" - 1990 UP

Observers  on 10 October '13

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

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2013-T82 & 2013-T86 -- 2013 TB80, 1990 UP
H21Astronomical Research Obs. Westfield in Illinois, 16 in MPECs 2013-T83, 2013-T84, 2013-T85 & 2013-T86 -- 2013 TT5, 2013 TR5, 2013 TQ5, 2013 TL69, 2013 TH69, 2013 TC6, 2013 TC4, 2013 TB80, 2013 TB6, 2013 TA80, 2013 RY80, 2013 RK16, 2012 VE37, 2008 AZ110, 2005 BW1, 2002 VY94
G36CASADO in Spain, 1 in MPEC 2013-T85 -- 2013 TA80
703Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2013-T82, 2013-T84 & 2013-T86 -- 2013 TE, 2013 TB80, 2013 TB6, 2013 SL20, 2013 RY5, 2012 ER14, 2011 WU95, 2009 SK1, 2005 RO33, 1990 UP, 88710, 65733, 354182, 351278, 162980, 4450, 4183, 1627
G58Chabot Obs. in northern California, 2 in MPEC 2013-T84 -- 2013 SR24, 285263
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2013-T86 -- 2013 TB80
958Dax Obs. in France, 1 in MPEC 2013-T86 -- 2013 TB80
448Desert Moon Obs. in New Mexico, 6 in MPECs 2013-T84 & 2013-T85 -- 2013 TA80, 2010 EH43, 2009 DM1, 2008 UN90, 2005 BW1, 1972 RB
I48El Catalejo Obs. in Argentina, 1 in MPEC 2013-T86 -- 2013 TB80
F65$Ernesto Guido in Italy via Faulkes Telescope North in Hawaii, 1 in MPEC 2013-T86 -- 2013 TB80
E105Richard Miles in England via Faulkes Telescope South in New South Wales, 2 in MPECs 2013-T84 & 2013-T85 -- 2013 TK69, 2013 TA80
J95Great Shefford Obs. in England, 2 in MPECs 2013-T82 & 2013-T86 -- 2013 TB80, 1990 UP
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2013-T86 -- 2013 TB80
246KLENOT in the Czech Republic, 3 in MPECs 2013-T84 & 2013-T85 -- 2013 TE6, 2013 TA80, 2013 SX24
046Klet Obs. in the Czech Republic, 7 in MPEC 2013-T84 -- 2013 SW24, 2013 RH74, 2010 VD1, 351278, 340666, 220909, 17511
D95Kurihara Obs. in Japan, 1 in MPEC 2013-T84 -- 433
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2013-T84 -- 2013 TP4
568;program code ";" on Mauna Kea in Hawaii, 1 in MPEC 2013-T84 -- 2007 FK3
900Moriyama Obs. in Japan, 1 in MPEC 2013-T86 -- 2013 TB80
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPEC 2013-T84 -- 2013 TC, 2013 SY19, 2013 SV19, 2013 SB21, 2010 SG15, 2009 XD, 2006 VV2, 2004 HW, 373135, 369983, 363790, 249816, 20826, 203217
J93Mt. Tuffley Obs. in England, 1 in MPEC 2013-T84 -- 89830
I41Palomar Transient Factory (PTF) in southern California, 4 in MPEC 2013-T84 -- 2013 MX5, 88710, 252373, 162566
H36Sandlot Obs. in Kansas, 5 in MPEC 2013-T84 -- 2013 TX68, 2013 TL, 2013 TF4, 2013 SO20, 2013 SB21
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2013-T84 -- 2013 TD4
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2013-T84 -- 2013 TR4, 2013 TQ12, 2013 TJ4, 2013 TG4, 2013 SG25, 2013 RD32
926Tenagra II Obs. in Arizona, 1 in MPEC 2013-T84 -- 251346
H068program code 8 via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-T84 -- 285263
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-T85 -- 2013 TA80
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-T86 -- 2013 TB80
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 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 TX68NEODyS15102017-206534.72e-09-7.30-7.310NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2013-10-06.261 to 2013-10-09.216."
JPL Sentry1503201713.3e-09-7.43-7.430JPL: "Analysis based on 32 observations spanning 2.9549 days (2013-Oct-06.25997 to 2013-Oct-09.2149)." Diameter approximately 0.030 km. from mean, weighted H=25.3.
2013 TP4NEODyS15102026-202613.78e-05-4.57-4.570NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2013-10-03.230 to 2013-10-09.281."
JPL Sentry1503202613.7e-05-4.57-4.570JPL: "Analysis based on 19 observations spanning 6.0503 days (2013-Oct-03.22944 to 2013-Oct-09.27975)." Diameter approximately 0.012 km. from mean, weighted H=27.3.
2013 SW24NEODyS15102106-210614.23e-09-6.63-6.630NEODyS: "Based on 159 optical observations (of which 0 are rejected as outliers) from 2013-09-27.557 to 2013-10-08.899."
JPL Sentry1503210613.6e-09-6.70-6.700JPL: "Analysis based on 159 observations spanning 11.342 days (2013-Sep-27.55584 to 2013-Oct-08.89834)." Diameter approximately 0.230 km. from mean, weighted H=20.8.

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 October '13

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

1841Grabbed MPEC 2013-T87 - 2013 RD32 = 2004 RS331 - see above
1630Grabbed MPEC 2013-T85 - 2013 TA80 - see above
Grabbed MPEC 2013-T86 - 2013 TB80 - see above
1529Generated Traffic Report
1510Noted that NEODyS has updated its 2013 SW24 risk assessment - see above
Noted that NEODyS has updated its 2013 TP4 risk assessment - see above
Noted that NEODyS has updated its 2013 TX68 risk assessment - see above
1503Noted that JPL Sentry has reposted 2013 SW24 as an impact risk - see above
Noted that JPL Sentry has updated its 2013 TP4 risk assessment - see above
Noted that JPL Sentry has updated its 2013 TX68 risk assessment - see above
Grabbed MPEC 2013-T83 - 2012 VE37 - see above
Grabbed MPEC 2013-T84 - Daily Orbit Update - see above
0407Grabbed MPEC 2013-T82 - 1990 UP - see above