2008 TC3 at 0000 UTC on October 7th.

JPL is reporting that "an atmospheric impact will very likely occur during early morning twilight over northern Sudan, north-eastern Africa, at 2:46 UT Tuesday morning" for the newly discovered (see below) tiny asteroid 2008 TC3. This A/CC sky graphic shows 2008 TC3's location two and three-quarter hours before the event as seen geocentrically, although, due its closeness to Earth, its sky location would appear very differently depending on your actual location. See news links here.


Contents  on 6 October '08

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 6 October '08

The MPC's NEO Confirmation Page has 8 listings: 2 new, 6 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and six updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of eleven objects listed on the NEOCP at some point today.

New MPECs  on 6 October '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been 20 MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-T68 - "23:40 UT" - 2008 TC3


MPEC 2008-T67 - "23:30 UT" - 2008 TC3


MPEC 2008-T66 - "23:05 UT" - 2008 TC3


MPEC 2008-T65 - "22:59 UT" - 2008 TC3


MPEC 2008-T64 - "22:49 UT" - 2008 TC3


MPEC 2008-T63 - "22:41 UT" - 2008 TC3


MPEC 2008-T62 - "22:27 UT" - 2008 TC3


MPEC 2008-T61 - "22:15 UT" - 2008 TC3


MPEC 2008-T60 - "22:08 UT" - 2008 TC3


MPEC 2008-T59 - "21:46 UT" - 2008 TC3


MPEC 2008-T58 - "21:37 UT" - 2008 TC3


MPEC 2008-T57 - "21:21 UT" - 2008 TC3


MPEC 2008-T56 - "21:07 UT" - 2008 TC3


MPEC 2008-T55 - "20:53 UT" - 2008 TC3


MPEC 2008-T54 - "20:20 UT" - 2008 TC3


MPEC 2008-T53 - "20:07 UT" - 2008 TC3


MPEC 2008-T52 - "19:15 UT" - 2008 TC3


MPEC 2008-T51 - "18:18 UT" - 2008 TC3


MPEC 2008-T50 - "14:59 UT" - 2008 TC3


<< DOU on 6 Oct. '08 >>  MPEC 2008-T49 - "06:10 UT" - Daily Orbit Update

Observers  on 6 October '08

A total of 33 observing facilities appear in today's MPECs.

CodeObserver / observatory
A86Albigneux Obs. in France, 1 in MPECs 2008-T63 & 2008-T67 -- 2008 TC3
J20Aravaca Obs., 1 in MPEC 2008-T66 -- 2008 TC3
H55Astronomical Research Obs. (ARO) in Illinois, 6 in MPEC 2008-T49 -- 2008 TZ, 2008 TL, 2008 TE, 2008 SV11, 2008 ST7, 2008 SH82
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-T61 -- 2008 TC3
235CAST Obs. in Italy, 1 in MPEC 2008-T60 -- 2008 TC3
A77Chante-Perdrix Obs. in France, 1 in MPECs 2008-T53, 2008-T63, 2008-T65 & 2008-T67 -- 2008 TC3
106Crni Vrh Obs. in Slovenia, 4 in MPECs 2008-T49 & 2008-T52 -- 2008 TC3, 2008 SP7, 2006 WZ2, 9856
J27El Guijo Obs. in Spain, 1 in MPEC 2008-T49 -- 2008 SQ1
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPECs 2008-T51 & 2008-T52 -- 2008 TC3
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-T59 -- 2008 TC3
F658program code 8 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-T49 -- 2008 ST
143Gnosca Obs. in Switzerland, 1 in MPECs 2008-T52, 2008-T53, 2008-T54, 2008-T55, 2008-T58, 2008-T61, 2008-T65 & 2008-T67 -- 2008 TC3
J95Great Shefford Obs. in England, 1 in MPECs 2008-T53, 2008-T55 & 2008-T63 -- 2008 TC3
046Klet Obs. in the Czech Republic, 1 in MPECs 2008-T54 & 2008-T55 -- 2008 TC3
J34La Fecha Obs. in Spain, 2 in MPEC 2008-T49 -- 2001 UZ16, 16960
J75La Sagra Obs. in Spain, 8 in MPECs 2008-T49, 2008-T57, 2008-T65 & 2008-T68 -- 2008 TC3, 2008 TA1, 2008 SQ1, 2008 SO, 2008 SE, 162873, 137044, 4450
620Mallorca Obs. on Mallorca, 1 in MPECs 2008-T56 & 2008-T65 -- 2008 TC3
952Marxuquera Obs. in Spain, 1 in MPECs 2008-T62, 2008-T64 & 2008-T68 -- 2008 TC3
213Montcabre Obs. in Spain, 1 in MPECs 2008-T55, 2008-T56, 2008-T57, 2008-T60, 2008-T61, 2008-T63, 2008-T64, 2008-T66, 2008-T67 & 2008-T68 -- 2008 TC3
474Mt. John Obs. in New Zealand, 6 in MPEC 2008-T49 -- 2008 TF, 2008 TC1, 2008 TA, 2008 SW150, 2008 RS26, 2004 RZ164
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2008-T49 & 2008-T50 -- 2008 TC3, 2008 RE80, 2008 OQ8
J93Mt. Tuffley Obs. in England, 5 in MPEC 2008-T49 -- 185851, 16960, 164400, 8567, 1627
J47Nazaret Obs. in Spain, 1 in MPECs 2008-T58, 2008-T59, 2008-T60, 2008-T61, 2008-T62, 2008-T63, 2008-T64, 2008-T66, 2008-T67 & 2008-T68 -- 2008 TC3
J53Posadas Obs. in Spain, 6 in MPECs 2008-T49, 2008-T63 & 2008-T68 -- 2008 TC3, 2008 SR1, 2008 SE, 2002 SS41, 2001 SK9, 1998 SJ70
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2008-T50 -- 2008 TC3
473Remanzacco Obs. in Italy, 1 in MPECs 2008-T55, 2008-T63, 2008-T65 & 2008-T67 -- 2008 TC3
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-T50 -- 2008 TC3
204Schiaparelli Obs. in Italy, 1 in MPECs 2008-T53, 2008-T54 & 2008-T61 -- 2008 TC3
E12Siding Spring Survey in New South Wales, 1 in MPEC 2008-T50 -- 2008 TC3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-T49 -- 2008 PL3
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2008-T49 -- 2008 TF2, 2008 SY150
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2008-T49 -- 190135
198Wildberg Obs. in Germany, 1 in MPEC 2008-T57 -- 2008 TC3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 October '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 TC3NEODyS1950200819.98e-011.691.690NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/10/06.278 to 2008/10/06.643."
JPL Sentry2123R E M O V E DJPL #2 for the day: Risk listing removed
2008 TENEODyS14382023-2084123.15e-05-5.27-5.270NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2008/10/01.248 to 2008/10/05.222."
JPL Sentry14372023-204733.2e-05-5.25-5.260JPL: "Analysis based on 35 observations spanning 3.9740 days (2008-Oct-01.24709 to 2008-Oct-05.22111)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 SH82NEODyS14382043-208139.23e-07-4.40-4.420NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/05.081."
JPL Sentry14372043-208139.5e-07-4.35-4.380JPL: "Analysis based on 38 observations spanning 8.8671 days (2008-Sep-26.21299 to 2008-Oct-05.08005)." Diameter approximately 0.210 km. from mean, weighted H=21.0.
2008 SV11NEODyS1438R E M O V E D-
JPL Sentry1437R E M O V E DJPL: Risk listing removed at 0951 UTC.
2008 ST7NEODyS14382062-2089123.59e-06-5.17-5.510NEODyS: "Based on 75 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/05.290."
JPL Sentry14372073-2108414.2e-05-4.24-4.810JPL: "Analysis based on 69 observations spanning 10.990 days (2008-Sep-24.29993 to 2008-Oct-05.28952)." Diameter approximately 0.052 km. from mean, weighted H=24.1.
2008 STNEODyS14382047-2084172.96e-05-5.93-5.970NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2008/09/22.162 to 2008/09/29.274."
JPL Sentry1437205212.8e-08-8.76-8.760JPL: "Analysis based on 36 observations spanning 7.1120 days (2008-Sep-22.16113 to 2008-Sep-29.27316)." Diameter approximately 0.013 km. from mean, weighted H=27.1.

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 6 October '08

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

2357Grabbed MPEC 2008-T65 - 2008 TC3 - see above
Grabbed MPEC 2008-T66 - 2008 TC3 - see above
Grabbed MPEC 2008-T67 - 2008 TC3 - see above
Grabbed MPEC 2008-T68 - 2008 TC3 - see above
2259Grabbed MPEC 2008-T61 - 2008 TC3 - see above
Grabbed MPEC 2008-T62 - 2008 TC3 - see above
Grabbed MPEC 2008-T63 - 2008 TC3 - see above
Grabbed MPEC 2008-T64 - 2008 TC3 - see above
2212Grabbed MPEC 2008-T59 - 2008 TC3 - see above
Grabbed MPEC 2008-T60 - 2008 TC3 - see above
2141Grabbed MPEC 2008-T56 - 2008 TC3 - see above
Grabbed MPEC 2008-T57 - 2008 TC3 - see above
Grabbed MPEC 2008-T58 - 2008 TC3 - see above
2123Noted that JPL Sentry has removed 2008 TC3 as an impact risk - see above
2056Grabbed MPEC 2008-T55 - 2008 TC3 - see above
2047Noted that JPL Sentry has posted 2008 TC3 as an impact risk - see above
2027Grabbed MPEC 2008-T53 - 2008 TC3 - see above
Grabbed MPEC 2008-T54 - 2008 TC3 - see above
1950Noted that NEODyS has posted 2008 TC3 as an impact risk - see above
1930Grabbed MPEC 2008-T52 - 2008 TC3 - see above
1859Grabbed MPEC 2008-T50 - 2008 TC3 - see above
Grabbed MPEC 2008-T51 - 2008 TC3 - see above
1438Noted that NEODyS has updated its 2008 SH82 risk assessment - see above
Noted that NEODyS has updated its 2008 ST risk assessment - see above
Noted that NEODyS has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has removed 2008 SV11 as an impact risk - see above
Noted that NEODyS has updated its 2008 TE risk assessment - see above
Grabbed MPEC 2008-T49 - Daily Orbit Update - see above
1437Noted that JPL Sentry has updated its 2008 SH82 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above
Noted that JPL Sentry has removed 2008 SV11 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 TE risk assessment - see above