243 Ida and its satellite Dactyl observed from 
Galileo on 28 Aug. 1993. Credit: NASA/JPL.

On this day in 1993 the Jupiter-bound Galileo spacecraft flew past Main Belter 243 Ida and, surprise, photographed a satellite. This wasn't discovered until the imagery was downloaded five-plus months later. The satellite, now named Dactyl, orbits at about 100 km. and is around 1.5 km. in diameter -- about 1/37th the size of Ida. Credit: NASA/JPL.


Contents  on 28 August '07

Resources:

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 28 August '07

Minor-Object Science  on 28 August '07

NEOCP Activity  on 28 August '07

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. Of these, one was a "one nighter." So far Major News has counted a total of five 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 28 August '07

Minor Planet Electronic Circulars

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


MPEC 2007-Q40 - "20:07 UT" - PHAs


MPEC 2007-Q39 - "20:07 UT" - Unusual Minor Planets


MPEC 2007-Q38 - "20:07 UT" - Amors


MPEC 2007-Q37 - "20:07 UT" - Atens and Apollos


MPEC 2007-Q36 - "20:02 UT" - Critical-List Minor Planets


MPEC 2007-Q35 - "19:46 UT" - Distant Minor Planets


MPEC 2007-Q34 - "19:25 UT" - Observable Comets


<< DOU on 28 Aug. '07 >>  MPEC 2007-Q33 - "06:05 UT" - Daily Orbit Update


MPEC 2007-Q32 - "04:11 UT" - 2006 VT2

Observers  on 28 August '07

Eight observing facilities appear in today's MPECs.

CodeObserver / observatory
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2007-Q33 -- 2007 QA2
H55Astronomical Research Obs. in Illinois, 3 in MPECs 2007-Q32 & 2007-Q33 -- 2007 LB15, 2006 VT2, 2003 QZ29
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2007-Q33 -- 2007 PF28
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2007-Q33 -- 2007 PF28
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2007-Q33 -- 2007 OY
J75La Sagra Obs. in Spain, 1 in MPEC 2007-Q33 -- 7350
473Remanzacco Obs. in Italy, 3 in MPEC 2007-Q33 -- 2007 LR32, 2007 DA41, 105140
204Schiaparelli Obs. in Italy, 1 in MPEC 2007-Q33 -- 145656

Impact Risk Monitoring  on 28 August '07

At last check (NEODyS and JPL at 2354 UTC) there was no risk monitoring news to report yet today. See the CRT for activity in the last month.

Chronology  on 28 August '07

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

2155Grabbed MPEC 2007-Q34 - Observable Comets - see above
Grabbed MPEC 2007-Q35 - Distant Minor Planets - see above
Grabbed MPEC 2007-Q36 - Critical-List Minor Planets - see above
Grabbed MPEC 2007-Q37 - Atens and Apollos - see above
Grabbed MPEC 2007-Q38 - Amors - see above
Grabbed MPEC 2007-Q39 - Unusual Minor Planets - see above
Grabbed MPEC 2007-Q40 - PHAs - see above
1909Added link to news story, "Asteroids Found by Bulgarian Astronomers Acknowledged" - see above
Added link to news story, "New Telescope Debuts at UCF's Robinson Observatory" - see above
1737Added MOS paper, "Rate and Distribution of Kilogram Lunar Impactors" - see above
1423Grabbed MPEC 2007-Q33 - Daily Orbit Update - see above
0528Grabbed MPEC 2007-Q32 - 2006 VT2 - see above