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Contents  on 13 June '07

• Minor-Object News -- four items
• Minor-Object Science -- three papers
• IAU Minor Planet Center
  • NEOCP Activity -- eight listings: 4 new, 4 updated
  • New MPECs -- one MPEC
  • Observers -- ten observing facilities
• Impact Risk Monitoring -- one object reported
• Chronology

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.

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Minor-Object News  on 13 June '07

• "Bold dentist set to explore," Salisbury Journal 13 June - Quote: "Mr Daniels will join a team of around 40 scientists doctors and vets to search for an eight kilometre wide meterorite crater [in Bolivia], possibly the site of the Earth's most recent big meteorite impact."
• "June 10th Dawn Journal," NASA Dawn mission 12 June - Quote: "[The] extraordinary capability of its ion propulsion system gives Dawn much greater flexibility in when it can launch than interplanetary missions that use conventional chemical propulsion... Dawn's new launch period opens on July 7 ... and if launch does not happen by July 11, readers may be assured [that there will be] later windows."
• "Exploration Place displays meteorite," The Wichita Eagle 12 June - Quote: "Greensburg's famous 1,000-pound space rock landed at Exploration Place on Monday, where it will be on display for about a month."
  • "Meteorite to tour state while Greensburg rebuilds," AP at KBSD-TV 12 June - Quote: "Greensburg's meteorite will tour the state for the next few months while the town rebuilds from last month's devastating tornado."

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Minor-Object Science  on 13 June '07

• "The Total Number of Giant Planets in Debris Disks with Central Clearings" by Faber, Peter with Alice C. Quillen, abstract & PDF at arXiv.org 13 June - Quote: "Infrared spectra from the Spitzer Space Telescope (SSC) of many debris disks are well fit with a single black body temperature which suggest clearings within the disk. We assume that inside the clearing orbital instability due to planets removes dust generating planetesimal belts and dust generated by the outer disk that is scattered or drifts into the clearing."
• "Dynamics of the giant planets of the solar system in the gaseous proto-planetary disk and relationship to the current orbital architecture" by Morbidelli, Alessandro with Kleomenis Tsiganis, Aurelien Crida & 2 others, abstract & PDF at arXiv.org 13 June - Quote: "We study the orbital evolution of the 4 giant planets of our solar system in a gas disk... Our preliminary simulations show that, when a planetesimal disk is added beyond the orbit of the outermost planet, the planets can evolve ... to their current orbits in a fashion qualitatively similar to that described in Tsiganis et al. (2005)."
• "A new young stellar cluster embedded in a molecular cloud in the far outer Galaxy" by Yun, Joao L. with Ana Lopez-Sepulcre & Jose M. Torrelles, abstract & PDF at arXiv.org 13 June - Quote: "The cluster appears composed of low and intermediate-mass, young reddened stars with a large fraction having cleared the inner regions of their circumstellar discs... The observations are compatible with a 4 Myr cluster."

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NEOCP Activity  on 13 June '07

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

When last checked at 2330 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and four updated listings. Of these, five were "one nighters."

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New MPECs  on 13 June '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 13 June '07 >>  MPEC 2007-L50 - "06:07 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K07L00S   2007 LS (Q=4.484 AU, arc=4 days, H=17.8 ~933m) from the Spacewatch 0.9m telescope (June 12.28-31p3)
• Observations of other objects
• K07L00F   2007 LF (arc=6 days, H=20.5 ~269m) from Hamamatsu-Yuto Obs. (June 12.51-53p3) and Greiner Research Obs. (June 13.12-13p4)
• K07L00A   2007 LA (arc=6 days, H=21.4 ~178m) from Astronomical Research Obs. (ARO) (June 12.09-10p4)
• K07J22H   2007 JH22 (arc=31 days, H=21.7 ~155m) from Spacewatch 0.9m (June 12.39-43p3)
• K07F42V   2007 FV42 (arc=84 days, H=17.8 ~933m) from Hamamatsu-Yuto Obs. (June 12.59-62p12)
• K07E88K   2007 EK88 (arc=90 days, H=21.6 ~162m) from ARO (June 12.20-21p3)
• K06WC7O   2006 WO127 (arc=2 opp, H=16.1 ~2.04 km, q=0.993 AU) from Spacewatch 0.9m (June 9.23-26p3)
• K06W03Z   2006 WZ3 (arc=2 opp, H=20.2 ~309m) from the Spacewatch 1.8m telescope (June 12.40-41p3)
• K06W03L   2006 WL3 (arc=203 days, H=19.9 ~355m) from Haute Provence Obs. (May 10.97-01p6)
• K06D62U   2006 DU62 (arc=2 opp, H=18.1 ~812m) from Mt. John Obs. (June 12.32-34p4)
• K06C00G   2006 CG (arc=3 opp, H=19.1 ~513m) from Jim Young via Table Mtn. Obs. (June 12.26-28p4)
• K05G59E   2005 GE59 (arc=2 opp, H=18.1 ~812m) from Spacewatch 1.8m (June 12.45-46p3 at V=22.2)
• K05B14G   2005 BG14 (arc=2 opp, H=18.6 ~645m) from Spacewatch 0.9m (June 12.23-26p3) and the Catalina Sky Survey (CSS) (June 12.34-36p4)
• K05A13D   2005 AD13 (arc=2 opp, H=17.9 ~891m) from Hamamatsu-Yuto Obs. (June 12.58p4)
• K04X35L   2004 XL35 (arc=2 opp, H=19.4 ~446m) from Mt. John Obs. (June 12.59-61p5)
• K03K02P   2003 KP2 (i=44.6°, Q=4.668 AU, arc=5 opp, H=15.4 ~2.82 km, q=0.837 AU) from ARO (June 12.11-12p3)
• K02K04F   2002 KF4 (i=37.2°, Q=4.571 AU, arc=3 opp, H=17.2 ~1.23 km) from Hamamatsu-Yuto Obs. (June 12.55-56p3)
• K02A02C   2002 AC2 (i=58.9°, arc=4 opp, H=16.5 ~1.70 km) from CSS (June 12.37-39p4)
• K01SH0E   2001 SE170 (arc=3 opp, H=18.2 ~776m) from CSS (June 12.32-33p4)
• K01Q34C   2001 QC34 (arc=2 opp, H=20.0 ~339m) from Spacewatch 1.8m (June 12.44-45p3)
• K00H14O   2000 HO14 (arc=3 opp, H=18.4 ~708m) from Spacewatch 1.8m (June 12.43p3)
• J97R00T   1997 RT (arc=2 opp, H=19.8 ~371m) from Mt. John Obs. (June 12.35-37p6)
• D6874   136874 1998 FH74 from Santa Mama Obs. (June 11.83-85p3)
• 68950   68950 2002 QF15 from Santa Mama Obs. (June 11.86-89p3)
• 68348   68348 2001 LO7 from Spacewatch 0.9m (June 10.36-39p3)
• 40267   40267 1999 GJ4 from Santa Mama Obs. (June 11.89-92p3)
• 04947   4947 Ninkasi (1988 TJ1) from CSS (June 12.30-36p7)
• 03551   3551 Verenia (1983 RD) from Spacewatch 0.9m (June 10.24-27p3)

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Observers  on 13 June '07

Ten observing facilities appeared in this day's MPECs.

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Impact Risk Monitoring  on 13 June '07

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.

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Chronology  on 13 June '07

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