Contents  on 16 May '07

WELCOME to A/CC's prototype daily news publication designed to be the viewing end of a planned autonomous 24-hour news service. The new tools and this publication format are working well enough now to share with readers. It is expected that this approach will require less time to maintain than our previous news and small asteroid pages, which were retired on May 14th. There's still more development ahead and there probably will be some glitches along the way, but this is what's needed to keep up with the increasing pace of minor-object news. The CRT page will be maintained separately for a little while longer, until all of this is working smoothly. And the CRT and small-asteroid ephemerides will be kept going.

Minor-Object News  on 16 May '07

Minor-Object Science  on 16 May '07

No science papers were available or prepared today.

NEOCP Activity  on 16 May '07

The MPC's NEO Confirmation Page has 8 listings: 4 new, 4 updated

When last checked at 2351 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and four updated listings. Of these, four were "one nighters."

New MPECs  on 16 May '07

Minor Planet Electronic Circulars

There was one MPEC issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 16 May '07 >>  MPEC 2007-K01 - "06:08 UT" - Daily Orbit Update

Observers  on 16 May '07

Sixteen observing facilities appeared in this day's MPECs.

H55Astronomical Research Obs. in Illinois, 5 in MPEC 2007-K01 -- 2007 HD15, 2007 FJ1, 2007 HG44, 2007 EZ, 2000 WO67
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2007-K01 -- 2000 DJ8
703Catalina Sky Survey in Arizona, 2 in MPEC 2007-K01 -- 2007 JH22, 2006 KE89
734Farpoint Obs. in Kansas, 1 in MPEC 2007-K01 -- 2007 JY2
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2007-K01 -- 2007 FV42, 1998 UL1, 86829
704LINEAR in New Mexico, 1 in MPEC 2007-K01 -- 2007 JF22
8099Andrea Boattini via La Silla in Chile, 2 in MPEC 2007-K01 -- 2007 HH44, 2007 HF44
G63Mill Creek Obs. in Oregon, 1 in MPEC 2007-K01 -- 145656
118Modra Obs. in Slovakia, 1 in MPEC 2007-K01 -- 86829
G96Mt. Lemmon Survey in Arizona, 4 in MPEC 2007-K01 -- 2003 EB50, 1993 GD, 136874, 54660
H45Petit Jean Mtn. South Obs. in Arkansas, 8 in MPEC 2007-K01 -- 2007 JZ20, 2007 HB, 2005 LR3, 2002 KF4, 145656, 86829, 54660, 39796
561Piszkesteto Sta. in Hungary, 1 in MPEC 2007-K01 -- 136874
E12Siding Spring Survey in New South Wales, 1 in MPEC 2007-K01 -- 2007 JJ35
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2007-K01 -- 2005 LG8, 89958
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2007-K01 -- 2007 JY2, 2007 EP88, 2006 VW2, 2003 RX7
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-K01 -- 2007 JJ35

Impact Risk Monitoring  on 16 May '07

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2351 UTC)
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2080.
For the latest official risk assessments, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2007 JZ20JPL22162030-2104394.1e-07-2.58-3.060JPL: "Analysis based on 47 observations spanning 4.0913 days (2007-May-11.28648 to 2007-May-15.37777)." Diameter approximately 0.851 km. from mean, weighted H=18.0.
NEODyS14002030-2080281.69e-07-2.94-3.430NEODyS: "Based on 47 optical observations (of which 1 are rejected as outliers) from 2007/05/11.287 to 2007/05/15.379."
2007 JY2JPL2003R E M O V E DJPL: Risk listing removed at 1948 UTC.
2007 JF16JPL19242014-2101377.0e-08-4.96-5.630JPL: "Analysis based on 14 observations spanning 1.9520 days (2007-May-10.3675 to 2007-May-12.31954)." Diameter approximately 0.232 km. from mean, weighted H=20.8.
2007 HE15JPL2216210211.8e-09-6.57-6.570JPL: "Analysis based on 24 observations spanning 19.985 days (2007-Apr-22.51299 to 2007-May-12.49826)." Diameter approximately 0.380 km. from mean, weighted H=19.7.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

For a list of all risk-rated objects recently in view, see our ephemerides page.

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from an 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" for more about all this.

Chronology  on 16 May '07

Times are UTC for when the items were noted by Major News.

2216Noted that JPL has updated its 2007 HE15 risk assessment - see above
Noted that JPL has posted 2007 JZ20 as an impact risk
2003Noted that JPL has removed 2007 JY2 as an impact risk - see above
1924Noted that JPL has posted 2007 JF16 as an impact risk - see above
1922Added link to news story, "Gusts of 120kmh rattle South Island"
1400Noted that NEODyS has updated its 2007 JZ20 risk assessment - see above
Grabbed MPEC 2007-K01 - Daily Orbit Update - see above