2010 TD54 crosses Earth's 
orbit. Credit: NASA/JPL.

Today small asteroid 2010 TD54 flies harmlessly through the Earth-Moon system, something estimated to occur daily, though usually unnoticed. Credit: NASA/JPL.


Contents  on 12 October '10

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.

NEOCP Activity  on 12 October '10

The MPC's NEO Confirmation Page has 17 listings: 5 new, 12 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and twelve updated listings. Of these, eight were "one nighters." So far The Tracking News has counted a total of 33 listings on the NEOCP at some point 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 12 October '10

Minor Planet Electronic Circulars

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


MPEC 2010-T91 - "23:02 UT" - 2009 YD7


MPEC 2010-T90 - "22:54 UT" - 2010 CG55


MPEC 2010-T89 - "21:25 UT" - 2010 TX54


MPEC 2010-T88 - "20:51 UT" - 2010 TW54


MPEC 2010-T87 - "20:44 UT" - 2010 TV54


MPEC 2010-T86 - "19:21 UT" - 2010 TU54


MPEC 2010-T85 - "19:14 UT" - 2010 TS54


MPEC 2010-T84 - "19:08 UT" - 2010 TR54


MPEC 2010-T83 - "18:52 UT" - 2010 TQ54


MPEC 2010-T82 - "18:47 UT" - 2010 TP54


MPEC 2010-T81 - "16:59 UT" - 2010 TN54


MPEC 2010-T80 - "16:50 UT" - 2010 TM54


MPEC 2010-T79 - "16:30 UT" - 2010 TK54


MPEC 2010-T78 - "14:52 UT" - 2005 TE45


<< DOU on 12 Oct. '10 >>  MPEC 2010-T77 - "06:08 UT" - Daily Orbit Update


MPEC 2010-T76 - "02:25 UT" - 2010 GH65


MPEC 2010-T75 - "02:08 UT" - 2010 TD54

Observers  on 12 October '10

A total of 36 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 2 in MPEC 2010-T77 -- 2010 TH19, 2010 TC54
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2010-T78, 2010-T79, 2010-T81, 2010-T83, 2010-T84, 2010-T88 & 2010-T89 -- 2010 TX54, 2010 TW54, 2010 TR54, 2010 TQ54, 2010 TN54, 2010 TK54, 2005 TE45
A74Bergen-Enkheim Obs. in Germany, 2 in MPECs 2010-T77 & 2010-T81 -- 2010 TN54, 2010 JE
300Bisei Spaceguard Center in Japan, 1 in MPEC 2010-T84 -- 2010 TR54
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2010-T77, 2010-T81, 2010-T88 & 2010-T89 -- 2010 TX54, 2010 TW54, 2010 TN54, 2010 TJ54, 2010 TG19, 2010 SK15, 2010 SD13, 248083, 242211, 161998, 12923, 5143, 4660, 4486, 4183
807Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2010-T91 -- 2009 YD7
G58Chabot Obs. in northern California, 1 in MPEC 2010-T84 -- 2010 TR54
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-T81 -- 2010 TN54
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2010-T77 -- 248083
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-T77 -- 2010 RK64, 2010 RC130, 88959, 153814
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPECs 2010-T77 & 2010-T81 -- 2010 TN54, 2010 TC54
651Grasslands Obs. in Arizona, 1 in MPEC 2010-T81 -- 2010 TN54
J95Great Shefford Obs. in England, 4 in MPECs 2010-T75, 2010-T77, 2010-T83 & 2010-T89 -- 2010 TX54, 2010 TQ54, 2010 TH54, 2010 TD54
A17Guidestar Obs. in Germany, 7 in MPECs 2010-T75, 2010-T77 & 2010-T81 -- 2010 TN54, 2010 TK19, 2010 TJ54, 2010 TF54, 2010 TD54, 2010 TC54, 2010 SK15
B86Hagen Obs. in Germany, 2 in MPECs 2010-T75 & 2010-T88 -- 2010 TW54, 2010 TD54
951Highworth Obs. in England, 1 in MPEC 2010-T77 -- 2010 RN80
J37Huelva Obs. in Spain, 1 in MPEC 2010-T77 -- 100926
046Klet Obs. in the Czech Republic, 2 in MPECs 2010-T77 & 2010-T88 -- 2010 TW54, 2010 SD13
704LINEAR in New Mexico, 14 in MPECs 2010-T77 & 2010-T81 -- 2010 TN54, 2010 TG54, 2010 RP80, 2010 QD2, 2010 MR87, 2007 TY18, 2000 TU28, 250706, 250697, 23187, 228502, 219071, 162913, 4183
B33Libbiano Obs. in Italy, 1 in MPEC 2010-T81 -- 2010 TN54
688Lowell Obs. Anderson Mesa Station in Arizona, 1 in MPEC 2010-T91 -- 2009 YD7
130Lumezzane Obs. in Italy, 4 in MPEC 2010-T77 -- 2010 RN80, 2010 MR87, 2010 LY63, 251346
H01Magdalena Ridge Obs. (MRO) in New Mexico, 10 in MPECs 2010-T78, 2010-T79, 2010-T80, 2010-T81, 2010-T82, 2010-T83, 2010-T84, 2010-T86, 2010-T87 & 2010-T88 -- 2010 TW54, 2010 TV54, 2010 TU54, 2010 TR54, 2010 TQ54, 2010 TP54, 2010 TN54, 2010 TM54, 2010 TK54, 2005 TE45
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2010-T77 -- 2010 TK
118Modra Obs. in Slovakia, 1 in MPEC 2010-T77 -- 2010 RX30
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2010-T77, 2010-T80, 2010-T82, 2010-T83, 2010-T84, 2010-T85, 2010-T87 & 2010-T88 -- 2010 TW54, 2010 TV54, 2010 TS54, 2010 TR54, 2010 TQ54, 2010 TP54, 2010 TM54, 2010 SH13, 2010 PM10, 2010 OD101, 2002 TC70, 87311
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-T76 -- 2010 GH65
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPECs 2010-T78, 2010-T79 & 2010-T86 -- 2010 TU54, 2010 TK54, 2005 TE45
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-T90 -- 2010 CG55
473Remanzacco Obs. in Italy, 2 in MPECs 2010-T81 & 2010-T84 -- 2010 TR54, 2010 TN54
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-T88 -- 2010 TW54
510Siegen Obs. in Germany, 3 in MPECs 2010-T77, 2010-T81 & 2010-T88 -- 2010 TW54, 2010 TN54, 2010 TD54
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2010-T77 -- 2010 RQ80, 2010 OC101, 249595, 4486
291Spacewatch 1.8m telescope in Arizona, 19 in MPECs 2010-T77, 2010-T78, 2010-T79, 2010-T80, 2010-T81, 2010-T82, 2010-T83, 2010-T84, 2010-T85, 2010-T86, 2010-T87 & 2010-T89 -- 2010 TX54, 2010 TV54, 2010 TU54, 2010 TS54, 2010 TR54, 2010 TQ54, 2010 TP54, 2010 TN54, 2010 TM54, 2010 TM, 2010 TK54, 2010 TK, 2010 TE, 2010 SG15, 2010 RW3, 2005 TE45, 2005 QA5, 2002 WQ4, 2000 YO29
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-T88 -- 2010 TW54
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-T88 -- 2010 TW54
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 October '10

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 CLOMON (backup) 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
2010 TW54JPL Sentry23052074-2107142.0e-05-6.36-6.720JPL: "Analysis based on 41 observations spanning .98252 days (2010-Oct-11.34885 to 2010-Oct-12.33137)." Diameter approximately 0.010 km. from mean, weighted H=27.6.
2010 TG19NEODyS1623202113.41e-10-8.35-8.350NEODyS: "Based on 52 optical observations (of which 0 are rejected as outliers) from 2010/10/07.143 to 2010/10/12.136."
2010 TMNEODyS1623R E M O V E D-
2010 RX30JPL Sentry16232063-210338.0e-07-7.25-7.270JPL: "Analysis based on 94 observations spanning 2.9582 days (2010-Sep-05.43059 to 2010-Sep-08.388761)." Diameter approximately 0.012 km. from mean, weighted H=27.2.

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 12 October '10

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

2305Noted that JPL Sentry has posted 2010 TW54 as an impact risk - see above
Grabbed MPEC 2010-T90 - 2010 CG55 - see above
Grabbed MPEC 2010-T91 - 2009 YD7 - see above
2201Grabbed MPEC 2010-T89 - 2010 TX54 - see above
2106Grabbed MPEC 2010-T87 - 2010 TV54 - see above
Grabbed MPEC 2010-T88 - 2010 TW54 - see above
1931Grabbed MPEC 2010-T84 - 2010 TR54 - see above
Grabbed MPEC 2010-T85 - 2010 TS54 - see above
Grabbed MPEC 2010-T86 - 2010 TU54 - see above
1902Grabbed MPEC 2010-T82 - 2010 TP54 - see above
Grabbed MPEC 2010-T83 - 2010 TQ54 - see above
1740Grabbed MPEC 2010-T81 - 2010 TN54 - see above
1704Grabbed MPEC 2010-T79 - 2010 TK54 - see above
Grabbed MPEC 2010-T80 - 2010 TM54 - see above
1623Noted that JPL Sentry has updated its 2010 RX30 risk assessment - see above
Noted that NEODyS has updated its 2010 TG19 risk assessment - see above
Noted that NEODyS has removed 2010 TM as an impact risk - see above
Grabbed MPEC 2010-T78 - 2005 TE45 - see above
0803Grabbed MPEC 2010-T77 - Daily Orbit Update - see above
0502Grabbed MPEC 2010-T75 - 2010 TD54 - see above
Grabbed MPEC 2010-T76 - 2010 GH65 - see above