Contents  on 11 October '12

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 11 October '12

Two objects reported inside ten LD

Reported flying inside ten lunar distances (LD) of Earth today are two objects, both intruders currently transiting Earth's Hill sphere. Risk-listed radar target 2012 TC4 is inside the Earth-Moon system, inbound from 1.86 to 0.43 LD (coming to 0.25 LD tomorrow), and newly announced 2012 TM79 exits Earth's Hill sphere, passing from 2.76 to 4.88 LD.

On approach next are two new discoveries. 2012 TE79 arrives inside ten LD on October 13th and 2012 TD79 on October 16th. And returning 2010 JK1 arrives on November 22nd.

This report was generated at 2338 UTC with new discoveries 2012 TM79 (MPEC), 2012 TE79 (MPEC), and 2012 TD79 (MPEC), plus follow-up in today's DOU MPEC for 2012 TC4 and departed 2012 RR16.


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 11 October '12

The MPC's NEO Confirmation Page has 121 listings

When last checked at 2344 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 121 objects listed. Of these, 108 were "one nighters." So far The Tracking News has counted a total of 179 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 11 October '12

Minor Planet Electronic Circulars

As of last check at 2344 UTC, there have been nineteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-T66 - "22:59 UT" - 2005 JU1


MPEC 2012-T65 - "21:00 UT" - 2010 JN33 = 2012 TU78


MPEC 2012-T64 - "19:30 UT" - 2012 TM79


MPEC 2012-T63 - "19:28 UT" - 2012 TL79


MPEC 2012-T62 - "19:25 UT" - 2012 TK79


MPEC 2012-T61 - "19:23 UT" - 2012 TJ79


MPEC 2012-T60 - "19:20 UT" - 2012 TH79


MPEC 2012-T59 - "19:18 UT" - 2012 TG79


MPEC 2012-T58 - "19:15 UT" - 2012 TF79


MPEC 2012-T57 - "19:13 UT" - 2012 TE79


MPEC 2012-T56 - "19:10 UT" - 2012 TD79


MPEC 2012-T55 - "18:35 UT" - Comet P/2012 T1 (Panstarrs)


MPEC 2012-T54 - "13:39 UT" - 2012 TV78


MPEC 2012-T53 - "13:36 UT" - 2012 TU78


MPEC 2012-T52 - "13:34 UT" - 2012 TT78


MPEC 2012-T51 - "13:31 UT" - 2012 TS78


MPEC 2012-T50 - "13:28 UT" - 2012 TQ78


MPEC 2012-T49 - "13:16 UT" - 2012 TC43


<< DOU on 11 Oct. '12 >>  MPEC 2012-T48 - "06:04 UT" - Daily Orbit Update

Observers  on 11 October '12

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 15 in MPECs 2012-T49, 2012-T50, 2012-T51, 2012-T52, 2012-T53, 2012-T54, 2012-T55, 2012-T56, 2012-T57, 2012-T59, 2012-T61, 2012-T62, 2012-T63, 2012-T64 & 2012-T66 -- 2012 TV78, 2012 TU78, 2012 TT78, 2012 TS78, 2012 TQ78, 2012 TM79, 2012 TL79, 2012 TK79, 2012 TJ79, 2012 TG79, 2012 TE79, 2012 TD79, 2012 TC43, P/2012 T1, 2005 JU1
B88Bigmuskie Obs. in Italy, 1 in MPEC 2012-T48 -- 141851
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-T56 -- 2012 TD79
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2012-T48, 2012-T64 & 2012-T66 -- 2012 TM79, 2012 LU7, 2009 TK, 2005 JU1, 1998 SE36, 99907, 335758, 335746, 3360
470Ceccano Obs. in Italy, 1 in MPEC 2012-T48 -- 2012 TC4
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPECs 2012-T48, 2012-T60, 2012-T62 & 2012-T66 -- 2012 TK79, 2012 TH79, 2012 OO, 2005 NK1, 2005 JU1
850Cordell-Lorenz Obs. in Tennessee, 2 in MPEC 2012-T48 -- 2012 RV16, 2002 UA31
448Desert Moon Obs. in New Mexico, 6 in MPEC 2012-T48 -- 2011 UG21, 2006 WN1, 277127, 265962, 155340, 138847
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 5 in MPECs 2012-T48 & 2012-T56 -- 2012 TS5, 2012 TR20, 2012 TD79, 2012 TC4, 2009 TK
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 3 in MPECs 2012-T48, 2012-T54 & 2012-T58 -- 2012 TV78, 2012 TF79, 2012 TC4
E100Tim Lister in southern California via Faulkes Telescope South in New South Wales, 2 in MPECs 2012-T50 & 2012-T66 -- 2012 TQ78, 2005 JU1
J95Great Shefford Obs. in England, 1 in MPEC 2012-T48 -- 2012 TC4
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2012-T48 -- 5646
857Iowa Robotic Obs. in Arizona, 1 in MPEC 2012-T48 -- 2012 TC4
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2012-T55 -- P/2012 T1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2012-T50, 2012-T51, 2012-T52, 2012-T56, 2012-T58, 2012-T59, 2012-T63, 2012-T64 & 2012-T66 -- 2012 TT78, 2012 TS78, 2012 TQ78, 2012 TM79, 2012 TL79, 2012 TG79, 2012 TF79, 2012 TD79, 2005 JU1
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2012-T48 & 2012-T55 -- 2012 TC4, P/2012 T1
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2012-T48, 2012-T51, 2012-T52, 2012-T56, 2012-T57, 2012-T58, 2012-T59 & 2012-T63 -- 2012 TT78, 2012 TS78, 2012 TL79, 2012 TG79, 2012 TF79, 2012 TE79, 2012 TD79, 2012 SV20, 2001 SF262, 2000 PG5, 12538
A24New Millennium Obs. in Italy, 8 in MPEC 2012-T48 -- 333889, 333358, 333284, 331963, 20460, 105140, 8035, 4487
583Odessa-Mayaki Obs. in the Ukraine, 2 in MPEC 2012-T48 -- 2012 QE50, 214869
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2012-T48, 2012-T49, 2012-T50, 2012-T51, 2012-T52, 2012-T53, 2012-T54, 2012-T55, 2012-T56, 2012-T57, 2012-T58, 2012-T60, 2012-T61 & 2012-T62 -- 2012 TV78, 2012 TU78, 2012 TT78, 2012 TS78, 2012 TQ78, 2012 TK79, 2012 TJ79, 2012 TH79, 2012 TF79, 2012 TE79, 2012 TD79, 2012 TC43, P/2012 T1, 2012 SW49, 2012 RR16, 2009 SB15, 2001 WL15
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 2 in MPECs 2012-T55 & 2012-T64 -- 2012 TM79, P/2012 T1
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2012-T50, 2012-T56, 2012-T64 & 2012-T66 -- 2012 TQ78, 2012 TM79, 2012 TD79, 2005 JU1
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2012-T48 -- 2012 TC4
H36Sandlot Obs. in Kansas, 2 in MPECs 2012-T53 & 2012-T54 -- 2012 TV78, 2012 TU78
204Schiaparelli Obs. in Italy, 5 in MPECs 2012-T55, 2012-T57, 2012-T59, 2012-T64 & 2012-T66 -- 2012 TM79, 2012 TG79, 2012 TE79, P/2012 T1, 2005 JU1
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2012-T48 -- 2012 MP
G40Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2012-T48 -- 2012 TC4
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-T48 -- 2002 TY68
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2012-T48, 2012-T49, 2012-T51, 2012-T52, 2012-T53, 2012-T54, 2012-T60 & 2012-T61 -- 2012 TY52, 2012 TV78, 2012 TU78, 2012 TT78, 2012 TS78, 2012 TN20, 2012 TM20, 2012 TJ79, 2012 TH79, 2012 TC43, 2012 TB53, 2012 SC22, 2012 RN6, 2012 PC20
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2012-T56 -- 2012 TD79
954Teide Obs. in the Canary Islands, 2 in MPEC 2012-T48 -- 2012 RV16, 141851
I76Tesla Obs. in Spain, 1 in MPEC 2012-T48 -- 2012 RV16
I15Wishing Star Obs. in Rhode Island, 1 in MPEC 2012-T48 -- 5587
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 October '12

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
2012 TH79JPL Sentry22032047-2103145.1e-09-6.72-7.360JPL: "Analysis based on 9 observations spanning .83436 days (2012-Oct-10.352913 to 2012-Oct-11.18727)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
2012 TF79JPL Sentry2203208712.0e-08-9.30-9.300JPL: "Analysis based on 18 observations spanning 1.9112 days (2012-Oct-09.346521 to 2012-Oct-11.25773)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2012 TV78JPL Sentry1615202012.4e-10-5.69-5.690JPL: "Analysis based on 23 observations spanning 2.8643 days (2012-Oct-08.314945 to 2012-Oct-11.17924)." Diameter approximately 0.600 km. from mean, weighted H=18.8.
2012 TS78JPL Sentry16152022-21121171.7e-06-2.14-2.640JPL: "Analysis based on 25 observations spanning 3.0731 days (2012-Oct-08.20071 to 2012-Oct-11.27383)." Diameter approximately 0.692 km. from mean, weighted H=18.4.
2012 TY52JPL Sentry16152018-202021.5e-09-6.16-6.360JPL: "Analysis based on 28 observations spanning 3.8656 days (2012-Oct-07.263715 to 2012-Oct-11.12936)." Diameter approximately 0.180 km. from mean, weighted H=21.4.
2012 TC4JPL Sentry23592020-2106766.1e-05-4.94-6.020JPL: "Analysis based on 191 observations spanning 6.3781 days (2012-Oct-04.467673 to 2012-Oct-10.8458)." Diameter approximately 0.015 km. from mean, weighted H=26.7.
NEODyS16152020-2100545.02e-05-4.99-6.00NEODyS: "Based on 191 optical observations (of which 0 are rejected as outliers) from 2012-10-04.468 to 2012-10-10.847."

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 11 October '12

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

2359Noted that JPL Sentry has updated its 2012 TC4 risk assessment - see above
2338Generated Traffic Report
2315Grabbed MPEC 2012-T66 - 2005 JU1 - see above
2209Grabbed MPEC 2012-T63 - 2012 TL79 - see above
Grabbed MPEC 2012-T64 - 2012 TM79 - see above
Grabbed MPEC 2012-T65 - 2010 JN33 = 2012 TU78 - see above
2208Grabbed MPEC 2012-T55 - Comet P/2012 T1 (Panstarrs) - see above
Grabbed MPEC 2012-T56 - 2012 TD79 - see above
Grabbed MPEC 2012-T57 - 2012 TE79 - see above
Grabbed MPEC 2012-T58 - 2012 TF79 - see above
Grabbed MPEC 2012-T60 - 2012 TH79 - see above
Grabbed MPEC 2012-T61 - 2012 TJ79 - see above
Grabbed MPEC 2012-T62 - 2012 TK79 - see above
2204Grabbed MPEC 2012-T59 - 2012 TG79 - see above
2203Noted that JPL Sentry has posted 2012 TF79 as an impact risk - see above
Noted that JPL Sentry has posted 2012 TH79 as an impact risk - see above
1615Noted that NEODyS has updated its 2012 TC4 risk assessment - see above
Noted that JPL Sentry has posted 2012 TS78 as an impact risk - see above
Noted that JPL Sentry has posted 2012 TV78 as an impact risk - see above
Noted that JPL Sentry has updated its 2012 TY52 risk assessment - see above
Grabbed MPEC 2012-T48 - Daily Orbit Update - see above
1614Grabbed MPEC 2012-T49 - 2012 TC43 - see above
Grabbed MPEC 2012-T50 - 2012 TQ78 - see above
Grabbed MPEC 2012-T51 - 2012 TS78 - see above
Grabbed MPEC 2012-T52 - 2012 TT78 - see above
Grabbed MPEC 2012-T53 - 2012 TU78 - see above
Grabbed MPEC 2012-T54 - 2012 TV78 - see above