Contents  on 19 October '07

Resources:

Note: Marching toward complete automation, we have inaugurated on October 18th an RSS news feed RSS news feed that is generated from the same scripts used to produce these daily news pages, replacing previously manual RSS creation. This provides faster and more complex (and surer) linking to both the related A/CC news items and, when available, now also to the original documents. And so this means not only an RSS news feed for A/CC reporting but also for MPECs and active risk assessments. Additionally, this change allows providing an alternate RSS news feed RSS feed for daily news as published on A/CC's backup Web site.

The latest news: framed access (best), RSS news feed RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 this year 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 19 October '07

The MPC's NEO Confirmation Page has 11 listings: 6 new, 5 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had six new and five updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of nineteen objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 19 October '07

Minor Planet Electronic Circulars

As of last check at 2355 UTC, there have been twelve MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-U36 - "21:56 UT" - Comets C/2007 R8, 2007 R9, 2007 R10, 2007 S3, 2007 S4 (SOHO)


MPEC 2007-U35 - "20:03 UT" - Comets C/2007 Q8, 2007 Q9, 2007 R6, 2007 R7 (SOHO)


MPEC 2007-U34 - "19:58 UT" - Comets C/2007 Q4, 2007 Q5, 2007 Q6, 2007 Q7 (SOHO)


MPEC 2007-U33 - "17:00 UT" - 2007 UC2


MPEC 2007-U32 - "16:58 UT" - 2007 UB2


MPEC 2007-U31 - "16:56 UT" - 2007 UA2


MPEC 2007-U30 - "16:52 UT" - 2007 UZ1


MPEC 2007-U29 - "16:50 UT" - 2007 UY1


MPEC 2007-U28 - "16:47 UT" - 2007 UX1


MPEC 2007-U27 - "16:45 UT" - 2007 UW1


MPEC 2007-U26 - "14:49 UT" - Comet P/2007 T2 (Kowalski)


<< DOU on 19 Oct. '07 >>  MPEC 2007-U25 - "06:12 UT" - Daily Orbit Update

Observers  on 19 October '07

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 13 in MPEC 2007-U25 -- 2007 TX24, 2007 TW68, 2007 TV18, 2007 TN74, 2007 TL15, 2007 TG1, 2007 TD1, 2007 SV2, 2007 RZ8, 2007 RT1, 2007 RR17, 2007 RP12, 2007 RL133
170Begues Obs. in Spain, 3 in MPEC 2007-U25 -- 2007 DA41, 2002 UA31, 53426
300Bisei Spaceguard Center in Japan, 1 in MPEC 2007-U33 -- 2007 UC2
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2007-U25, 2007-U27, 2007-U28, 2007-U29 & 2007-U33 -- 2007 UY1, 2007 UX1, 2007 UW1, 2007 UC2, 2007 TR65, 2007 RT147, 2002 UA31, 2002 SV, 87309, 21374, 16636, 3288
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2007-U26 -- P/2007 T2
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-U27 -- 2007 UW1
651Grasslands Obs. in Arizona, 4 in MPECs 2007-U27, 2007-U29, 2007-U30 & 2007-U33 -- 2007 UZ1, 2007 UY1, 2007 UW1, 2007 UC2
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2007-U25 -- 2007 PU11, 2007 LR32, 2002 RC118
246KLENOT in the Czech Republic, 1 in MPEC 2007-U25 -- 2007 TH71
585Kiev Comet Station in the Ukraine, 1 in MPEC 2007-U26 -- P/2007 T2
704LINEAR in New Mexico, 11 in MPECs 2007-U25 & 2007-U29 -- 2007 UY1, 2007 TJ19, 2007 RU17, 2007 RT147, 2004 KE1, 21374, 163760, 161998, 154278, 144900, 1036
699LONEOS in Arizona, 3 in MPECs 2007-U25 & 2007-U27 -- 2007 UW1, 21277, 2212
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2007-U27 -- 2007 UW1
B28Mandi Obs. in Italy, 2 in MPEC 2007-U25 -- 2007 PU11, 2005 SG
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2007-U25, 2007-U26, 2007-U28, 2007-U29, 2007-U30, 2007-U31, 2007-U32 & 2007-U33 -- 2007 UZ1, 2007 UY1, 2007 UX1, 2007 UC2, 2007 UB2, 2007 UA2, P/2007 T2, 85839, 6489
A53Peschiera del Garda Obs. in Italy, 6 in MPEC 2007-U25 -- 2007 TG8, 2007 TC14, 2007 SG11, 2007 RF5, 2007 OV, 2007 DA41
D21Shenton Park Obs. in Western Australia, 4 in MPEC 2007-U25 -- 2007 TU18, 2007 TR65, 2007 TJ19, 2007 TA19
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2007-U25 -- 2007 TD71, 2007 TA19
2492LASCO Coronagraph 2 (SOHO C2) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 4 in MPECs 2007-U35 & 2007-U36 -- C/2007 S4, C/2007 R7, C/2007 R6, C/2007 R10
2493LASCO Coronagraph 3 (SOHO C3) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 11 in MPECs 2007-U34, 2007-U35 & 2007-U36 -- C/2007 S4, C/2007 S3, C/2007 R9, C/2007 R8, C/2007 R7, C/2007 Q9, C/2007 Q8, C/2007 Q7, C/2007 Q6, C/2007 Q5, C/2007 Q4
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2007-U25 -- 2007 UH, 2007 TD1, 2007 TB14, 2007 RR17, 2007 QK2, 2007 PU11, 1993 TQ2
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2007-U25, 2007-U28, 2007-U30, 2007-U31 & 2007-U32 -- 2007 UZ1, 2007 UX1, 2007 UB2, 2007 UA2, 2007 TU24, 2007 TL16, 2007 TH72, 2007 TG1, 2007 TB23, 2007 RS12
6735Jim Young via Table Mtn. Obs. in southern California, 5 in MPECs 2007-U27, 2007-U28, 2007-U29, 2007-U30 & 2007-U33 -- 2007 UZ1, 2007 UY1, 2007 UX1, 2007 UW1, 2007 UC2

Impact Risk Monitoring  on 19 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2355 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now 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
2007 UY1JPL Sentry22592043-2107456.5e-07-5.62-5.950JPL: "Analysis based on 26 observations spanning 1.0811 days (2007-Oct-18.14415 to 2007-Oct-19.22523)." Diameter approximately 0.085 km. from mean, weighted H=23.0.
2007 UW1JPL Sentry23552048-2106941.6e-04-3.12-3.430JPL: "Analysis based on 28 observations spanning 2.0396 days (2007-Oct-17.44246 to 2007-Oct-19.48208)." Diameter approximately 0.097 km. from mean, weighted H=22.7.
2007 USNEODyS15102015-2090205.46e-09-7.14-7.380NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2007/10/16.242 to 2007/10/17.164."
2007 TH72JPL Sentry1436209616.1e-09-8.00-8.000JPL: "Analysis based on 28 observations spanning 4.0146 days (2007-Oct-15.20289 to 2007-Oct-19.21753)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
NEODyS14362078-208727.62e-09-7.85-7.960NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2007/10/15.204 to 2007/10/19.218."
2007 TD71JPL Sentry14362051-2107312.6e-07-3.09-3.990JPL: "Analysis based on 16 observations spanning 5.0269 days (2007-Oct-13.70201 to 2007-Oct-18.72894)." Diameter approximately 0.740 km. from mean, weighted H=18.3.
NEODyS14362048-2090182.18e-07-3.15-4.050NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2007/10/13.703 to 2007/10/18.730."
2007 TU24JPL Sentry14362039-2104205.7e-06-3.21-3.330JPL: "Analysis based on 65 observations spanning 7.9331 days (2007-Oct-11.26838 to 2007-Oct-19.20144)." Diameter approximately 0.320 km. from mean, weighted H=20.1.
NEODyS14362045-207726.74e-07-3.89-4.040NEODyS: "Based on 65 optical observations (of which 0 are rejected as outliers) from 2007/10/11.269 to 2007/10/19.202."
2007 TB23JPL Sentry1510209724.2e-07-3.36-3.370JPL: "Analysis based on 51 observations spanning 7.8440 days (2007-Oct-10.38885 to 2007-Oct-18.23284)." Diameter approximately 0.620 km. from mean, weighted H=18.7.
2007 TL16JPL Sentry14362074-2095136.2e-06-5.94-6.120JPL: "Analysis based on 38 observations spanning 9.0701 days (2007-Oct-09.28741 to 2007-Oct-18.35748)." Diameter approximately 0.021 km. from mean, weighted H=26.1.
NEODyS14362074-2090175.63e-06-6.05-6.200NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2007/10/09.288 to 2007/10/18.358."
2007 TC14NEODyS1510208211.55e-07-5.25-5.250NEODyS: "Based on 134 optical observations (of which 0 are rejected as outliers) from 2007/10/08.391 to 2007/10/16.872."
JPL Sentry1436R E M O V E DJPL: Risk listing removed at 1334 UTC.

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 19 October '07

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

2355Noted that JPL Sentry has posted 2007 UW1 as an impact risk - see above
2259Noted that JPL Sentry has posted 2007 UY1 as an impact risk - see above
2159Grabbed MPEC 2007-U36 - Comets C/2007 R8, 2007 R9, 2007 R10, 2007 S3, 2007 S4 (SOHO) - see above
2059Grabbed MPEC 2007-U34 - Comets C/2007 Q4, 2007 Q5, 2007 Q6, 2007 Q7 (SOHO) - see above
Grabbed MPEC 2007-U35 - Comets C/2007 Q8, 2007 Q9, 2007 R6, 2007 R7 (SOHO) - see above
1723Grabbed MPEC 2007-U32 - 2007 UB2 - see above
Grabbed MPEC 2007-U33 - 2007 UC2 - see above
1658Grabbed MPEC 2007-U27 - 2007 UW1 - see above
Grabbed MPEC 2007-U28 - 2007 UX1 - see above
Grabbed MPEC 2007-U29 - 2007 UY1 - see above
Grabbed MPEC 2007-U30 - 2007 UZ1 - see above
Grabbed MPEC 2007-U31 - 2007 UA2 - see above
1510Noted that JPL Sentry has updated its 2007 TB23 risk assessment - see above
Noted that NEODyS has updated its 2007 TC14 risk assessment - see above
Noted that NEODyS has posted 2007 US as an impact risk - see above
Grabbed MPEC 2007-U26 - Comet P/2007 T2 (Kowalski) - see above
1437Grabbed MPEC 2007-U25 - Daily Orbit Update - see above
1436Noted that JPL Sentry has removed 2007 TC14 as an impact risk - see above
Noted that JPL Sentry has updated its 2007 TD71 risk assessment - see above
Noted that NEODyS has updated its 2007 TD71 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TH72 risk assessment - see above
Noted that NEODyS has updated its 2007 TH72 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TL16 risk assessment - see above
Noted that NEODyS has updated its 2007 TL16 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TU24 risk assessment - see above
Noted that NEODyS has updated its 2007 TU24 risk assessment - see above