Contents  on 20 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 20 October '07

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of eighteen 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 20 October '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been seven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2007-U43 - "15:38 UT" - 2007 UW3


MPEC 2007-U42 - "15:36 UT" - 2007 UV3


MPEC 2007-U41 - "15:33 UT" - 2007 UU3


MPEC 2007-U40 - "15:30 UT" - 2007 UT3


MPEC 2007-U39 - "15:27 UT" - 2007 US3


MPEC 2007-U38 - "15:24 UT" - 2007 UR3


<< DOU on 20 Oct. '07 >>  MPEC 2007-U37 - "06:10 UT" - Daily Orbit Update

Observers  on 20 October '07

A total of 24 observing facilities appear in today's MPECs.

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 3 in MPEC 2007-U37 -- 2007 PU11, 22771, 143678
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2007-U37, 2007-U39, 2007-U40, 2007-U41, 2007-U42 & 2007-U43 -- 2007 UW3, 2007 UV3, 2007 UU3, 2007 UT3, 2007 US3, 2007 RU12, 2004 KE1, 4954
448Desert Moon Obs. in New Mexico, 8 in MPEC 2007-U37 -- 2007 TX18, 2007 TL23, 2007 TG15, 2007 TD66, 2007 TC66, 2007 SE11, 2007 RU10, 138947
734Farpoint Obs. in Kansas, 1 in MPEC 2007-U42 -- 2007 UV3
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2007-U37 -- 2001 RY47
651Grasslands Obs. in Arizona, 2 in MPECs 2007-U39 & 2007-U43 -- 2007 UW3, 2007 US3
H51Greiner Research Obs. in Wisconsin, 2 in MPEC 2007-U37 -- 2007 TS19, 2007 TR24
458Guadarrama Obs. in Spain, 1 in MPEC 2007-U37 -- 2002 RC118
A17Guidestar Obs. in Germany, 1 in MPEC 2007-U43 -- 2007 UW3
B15Inastars Obs. in Germany, 1 in MPEC 2007-U37 -- 153271
715Jornada Obs. in New Mexico, 2 in MPEC 2007-U37 -- 2007 TO74, 2007 TD66
701Junk Bond Obs. in Arizona, 1 in MPEC 2007-U37 -- 2007 UA2
704LINEAR in New Mexico, 20 in MPECs 2007-U37, 2007-U39, 2007-U40, 2007-U41 & 2007-U42 -- 2007 UV3, 2007 UU3, 2007 UT3, 2007 US3, 2007 TU18, 2007 TS19, 2007 TJ19, 2007 TB23, 2007 SP6, 2007 RU12, 2007 RT19, 2007 PU11, 2007 DL41, 2002 RC118, 2001 RY47, 2000 JN10, 66251, 162004, 2212, 1865
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2007-U37, 2007-U39 & 2007-U43 -- 2007 UW3, 2007 US3, 2007 LR32
B28Mandi Obs. in Italy, 2 in MPEC 2007-U37 -- 2007 PU11, 2005 SG
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2007-U37 & 2007-U38 -- 2007 UR3, 2007 TS19, 2004 DD, 2001 XD, 25916, 3757
A24New Millennium Obs. in Italy, 2 in MPEC 2007-U37 -- 2007 TG8, 2007 LR32
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPEC 2007-U37 -- 2007 TX18, 2007 TG8, 2007 RU17, 2007 RT19, 2007 RF5, 2007 PU11, 2007 LR32, 2007 KN4, 2005 SG, 2002 RC118, 2001 RY47, 20826, 152787, 143678
473Remanzacco Obs. in Italy, 1 in MPEC 2007-U43 -- 2007 UW3
D21Shenton Park Obs. in Western Australia, 2 in MPEC 2007-U37 -- 2007 TT18, 2007 TR24
E12Siding Spring Survey (SSS) in New South Wales, 9 in MPEC 2007-U37 -- 2007 TQ24, 2007 TD71, 2007 TA19, 2007 PQ9, 2007 MC24, 2007 DL8, 2005 SA71, 2001 UY16, 159608
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-U38 -- 2007 UR3
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2007-U37 & 2007-U38 -- 2007 UR3, 2007 TX24, 2007 TW68, 2007 TQ24, 2007 TL16, 2007 TE71, 2007 TB23, 2007 SR1, 2007 RP12, 2002 WW17
A92Urseanu Obs. in Romania, 2 in MPEC 2007-U37 -- 2007 TS19, 2007 PU11

Impact Risk Monitoring  on 20 October '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2354 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 UY1NEODyS16432050-207321.75e-08-7.03-7.270NEODyS: "Based on 27 optical observations (of which 2 are rejected as outliers) from 2007/10/18.145 to 2007/10/19.226."
2007 UW1NEODyS18192048-2090674.61e-05-3.60-4.320NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2007/10/17.443 to 2007/10/19.483."
2007 TD71NEODyS14182051-2090162.77e-07-3.04-3.850NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2007/10/13.703 to 2007/10/19.768."
JPL Sentry14172054-2107303.2e-07-3.00-3.800JPL: "Analysis based on 18 observations spanning 6.0653 days (2007-Oct-13.70201 to 2007-Oct-19.76736)." Diameter approximately 0.730 km. from mean, weighted H=18.3.
2007 TB23JPL Sentry1417209716.7e-10-6.17-6.170JPL: "Analysis based on 58 observations spanning 8.9533 days (2007-Oct-10.38885 to 2007-Oct-19.34211)." Diameter approximately 0.610 km. from mean, weighted H=18.7.
2007 TL16NEODyS14182073-2090226.19e-06-6.01-6.190NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2007/10/09.288 to 2007/10/19.403."
JPL Sentry14172074-2095136.1e-06-5.95-6.110JPL: "Analysis based on 43 observations spanning 10.115 days (2007-Oct-09.28741 to 2007-Oct-19.40212)." Diameter approximately 0.021 km. from mean, weighted H=26.1.

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 20 October '07

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

1819Noted that NEODyS has posted 2007 UW1 as an impact risk - see above
1643Noted that NEODyS has posted 2007 UY1 as an impact risk - see above
1642Grabbed MPEC 2007-U40 - 2007 UT3 - see above
1605Grabbed MPEC 2007-U42 - 2007 UV3 - see above
1559Grabbed MPEC 2007-U38 - 2007 UR3 - see above
Grabbed MPEC 2007-U39 - 2007 US3 - see above
Grabbed MPEC 2007-U41 - 2007 UU3 - see above
Grabbed MPEC 2007-U43 - 2007 UW3 - see above
1418Noted that NEODyS has updated its 2007 TD71 risk assessment - see above
Noted that NEODyS has updated its 2007 TL16 risk assessment - see above
Grabbed MPEC 2007-U37 - Daily Orbit Update - see above
1417Noted that JPL Sentry has updated its 2007 TB23 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TD71 risk assessment - see above
Noted that JPL Sentry has updated its 2007 TL16 risk assessment - see above