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

Watch out, cross traffic ahead! Discovered yesterday by the Mt. Lemmon Survey, tiny 2010 TD54 will cross Earth's orbit tomorrow, passing from outside to inside by flying right between the Earth and Moon. Credit: NASA/JPL NEO Program Office orbit viewer.


Contents  on 11 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 11 October '10

The MPC's NEO Confirmation Page has 21 listings: 5 new, 16 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and sixteen updated listings. Of these, nine were "one nighters."

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 '10

Minor Planet Electronic Circulars

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


MPEC 2010-T74 - "21:50 UT" - 2010 TD54


MPEC 2010-T73 - "15:12 UT" - 2004 BV1 = 2010 TM


<< DOU on 11 Oct. '10 >>  MPEC 2010-T72 - "06:08 UT" - Daily Orbit Update

Observers  on 11 October '10

A total of 27 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 16 in MPEC 2010-T72 -- 2010 TQ19, 2010 TN4, 2010 TN3, 2010 TL, 2010 TK6, 2010 TG19, 2010 SD13, 2010 RN80, 2010 RC130, 2010 PR10, 2010 ON101, 2010 OB101, 2010 OB, 2010 NW117, 2010 LH14, 2005 SP9
300Bisei Spaceguard Center in Japan, 1 in MPEC 2010-T72 -- 2010 TC54
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2010-T72 -- 2010 NW117, 85770
A77Chante-Perdrix Obs. in France, 1 in MPEC 2010-T72 -- 2007 RU17
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-T72 -- 2010 TG19
113Drebach Obs. in Germany, 1 in MPEC 2010-T72 -- 2007 VC138
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2010-T74 -- 2010 TD54
J95Great Shefford Obs. in England, 3 in MPEC 2010-T72 -- 2010 TH54, 2010 TG54, 2010 TD54
A17Guidestar Obs. in Germany, 1 in MPEC 2010-T72 -- 2010 TG19
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2010-T72 -- 2010 RN80, 2010 MR87, 2010 LY63
240Herrenberg Obs. in Germany, 1 in MPEC 2010-T72 -- 1865
046Klet Obs. in the Czech Republic, 1 in MPEC 2010-T74 -- 2010 TD54
704LINEAR in New Mexico, 9 in MPECs 2010-T72 & 2010-T74 -- 2010 TF54, 2010 TD54, 2000 TU28, 250706, 250697, 23187, 219071, 5869, 4055
H01Magdalena Ridge Obs. in New Mexico, 1 in MPECs 2010-T72 & 2010-T74 -- 2010 TD54
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2010-T72 & 2010-T74 -- 2010 TM4, 2010 TD54, 2010 RK43, 2010 GA24, 2004 EB, 2003 TG2, 1999 XR35, 65679, 170903
J93Mt. Tuffley Obs. in England, 5 in MPEC 2010-T72 -- 65679, 100926, 4055, 3122, 2212
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2010-T72 -- 2006 SP134
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2010-T72 -- 2010 RN80, 2010 MR87, 2010 LY63
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-T72 -- 2000 TU28
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-T72 -- 2010 RP80, 2005 TB15
291Spacewatch 1.8m telescope in Arizona, 12 in MPEC 2010-T72 -- 2010 TU5, 2010 TM, 2010 TL, 2010 TG19, 2010 TE, 2010 SU15, 2010 SH15, 2010 SB, 2010 SA17, 2010 NT1, 2006 WT1, 1999 RJ27
611Starkenburg Obs. in Germany, 1 in MPEC 2010-T72 -- 2010 TD54
A78Stia Obs. in Italy, 2 in MPEC 2010-T72 -- 2007 VG189, 12538
A98Taurus-1 Obs. in Belarus, 2 in MPEC 2010-T72 -- 2010 RN80, 2010 LR68
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-T72 -- 3200
C51WISE in Earth polar orbit, 2 in MPEC 2010-T72 -- 2010 SJ13, 2007 XB10
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2010-T72 -- 2010 RK43, 2010 LY63, 137032
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 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 TD54JPL Sentry1719R E M O V E DJPL: Risk listing removed at 0853 UTC.
2010 TG19NEODyS1719202613.07e-09-7.56-7.560NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2010/10/07.143 to 2010/10/10.818."
2010 TMJPL Sentry17192025-2110491.4e-06-2.94-3.510JPL: "Analysis based on 31 observations spanning 7.9991 days (2010-Oct-02.44882 to 2010-Oct-10.44791)." Diameter approximately 0.498 km. from mean, weighted H=19.2.
NEODyS17192025-208194.85e-07-3.32-3.670NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2010/10/02.450 to 2010/10/10.449."

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 '10

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

2217Grabbed MPEC 2010-T74 - 2010 TD54 - see above
1719Noted that JPL Sentry has removed 2010 TD54 as an impact risk - see above
Noted that NEODyS has reposted 2010 TG19 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 TM risk assessment - see above
Noted that NEODyS has updated its 2010 TM risk assessment - see above
Grabbed MPEC 2010-T73 - 2004 BV1 = 2010 TM - see above
0754Grabbed MPEC 2010-T72 - Daily Orbit Update - see above