Pluto, Charon, Nix, and Hydra from 
the HST. Credit: NASA, ESA, etc.

Pluto at center with its large moon, Charon, and small moons Hydra and Nix, from the Hubble Space Telescope in 2005. Charon has been in the news recently about its water-ice surface and possible cryovolcanism, and see news below about Hydra and Nix. Credit: NASA, ESA, H. Weaver, A. Stern, and the HST Pluto Companion Search Team.

Contents  on 20 July '07


The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site.

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.

Minor-Object News  on 20 July '07

Minor-Object Science  on 20 July '07

NEOCP Activity  on 20 July '07

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, three were "one nighters."

New MPECs  on 20 July '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 20 July '07 >>  MPEC 2007-O33 - "06:07 UT" - Daily Orbit Update

Observers  on 20 July '07

Nine observing facilities appeared in this day's MPECs.

703Catalina Sky Survey in Arizona, 1 in MPEC 2007-O33 -- 2100
A21Irmtraut Obs. in Germany, 1 in MPEC 2007-O33 -- 2007 NC5
704LINEAR in New Mexico, 8 in MPEC 2007-O33 -- 2005 GO22, 2003 MT9, 1997 PN, 153415, 140158, 24443, 18882, 433
B28Mandi Obs. in Italy, 1 in MPEC 2007-O33 -- 2003 HF2
474Mt. John Obs. in New Zealand, 1 in MPEC 2007-O33 -- 2007 NT4
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2007-O33 -- 2100
A24New Millennium Obs. in Italy, 5 in MPEC 2007-O33 -- 2007 MB24, 2007 LR32, 2004 ST9, 136818, 85275
H45Petit Jean Mtn. South Obs. in Arkansas, 11 in MPEC 2007-O33 -- 2007 LR32, 2007 LA15, 2007 LV8, 2007 LF, 2007 CK26, 2006 XA, 2004 ST9, 2003 HF2, 1999 VO6, 145656, 85275
E12Siding Spring Survey in New South Wales, 1 in MPEC 2007-O33 -- 154269

Impact Risk Monitoring  on 20 July '07

There was no risk monitoring news to report on this day.

Chronology  on 20 July '07

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

1516Added news report, "Na Kilo Hoku"
Added link to news story, "Researchers scour Prairies for meteorites"
Added link to news story, "Hanging out with black hole physicists"
Added link to news story, "Ball of Gas Meets Ball of Stars"
1336Grabbed MPEC 2007-O33 - Daily Orbit Update - see above
0418Added MOS paper, "Coronal abundances of X-ray bright pre-main sequence stars in the Taurus Molecular Cloud" - see above
Added MOS paper, "Debris Disks in NGC 2547" - see above
Added MOS paper, "Formation of Protoplanets from Massive Planetesimals in Binary Systems" - see above
Added MOS paper, "Molecular line radiative transfer in protoplanetary disks: Monte Carlo simulations versus approximate methods" - see above
Added MOS paper, "The 105 Lsun High-Mass Protostellar Object IRAS 23151+5912" - see above
Added link to news story, "Aucklanders treated to meteorite display"