Saturday3 April 20043:05pm MST2004-04-03 UTC 2205 back top next  

The Asteroid/Comet Connection's
daily news journal about
asteroids, comets, and meteors


Today's issue status: done, updated
yesterdayAprilMondayIndex
The next news edition is planned for Monday the 5th.
  • News briefs – occultation news + bits & pieces
    – site news & thank-you's
  • Risk monitoring
    – NEODyS & JPL have removed 2004 FY31

Cover: Originally classified as a PHA when announced in MPEC 2004-F73, 2004 FM17 was caught by Robert Hutsebaut last Sunday morning, closing out its confirmation process after discovery by LINEAR two days earlier. He was running a Rent-a-scope telescope at New Mexico Skies from Belgium, and this is six images, of 20 seconds exposure each, stacked on the object's motion, causing short star streaks. 2004 FM17 lives mostly inside Earth's orbit, and JPL shows now that it doesn't come closer to Earth than 0.062 AU. It is estimated at roughly a half kilometer (500 yards) wide.

News briefs – panel 1/1 Major News for 3 April 2004 back top next  
News briefs

Occultation news:  The Conroe, Texas Courier reported April 1st that high school sophomore Beth Turner "won her third first-place award and Grand Award in a row" at "the Science Engineering Fair of Houston" with her project on "Asteroid Occultations." See Richard Nugent's news page about observing an occultation by 208 Lacrimosa early December 31st. David Dunham in January noted that, at age 15, she was "perhaps the youngest observer of an asteroidal occultation (and almost certainly the youngest to video record one)." Paul Maley's Houston Astronomical Events page tells about this successful group effort and has a picture of Beth Turner with her equipment.

Bits & pieces:  Additional to Thursday "Radar news", Ondrejov Observatory has posted a 2001 US16 lightcurve and a Binary NEA 1999 DJ4 page.

A Xinhua news item (March 31st "Bits & pieces") that the name of China's first astronaut will be submitted to the IAU for naming an asteroid morphed somehow into an AFP wire story carried at various news sites,

such as SpaceDaily April 1st, that "A Chinese observatory is seeking agreement with an international space naming body to name an unnamed star after Yang Liwei" (emphasis added). Update: Bill Yeung points out that Eric Elst already named 21064 Yangliwei !

Site news from the editor March was a banner month for minor object news and I am pleased to tell you that site traffic exceeded 800 average daily visits (about 25,300 total), doubling January and February numbers. A/CC Major News succeeds through reader participation, and I would like to collectively thank you for info from experts, images from observers, and news tips and reports of text problems from everybody.
      This is a good place for an overdue public "thank you" to Andre Knoefel and the Walter Hohmann (Essen) Observatory for sending a reprint of Walter Hohmann's 1925 book, Die Erreichbarkeit der Himmelskoerper (The Attainability of Celestial Bodies), in which he invented what is now called a "Hohmann transfer orbit" to move from one orbit to another. The reprint, in German only, can be ordered from the observatory.

Risk monitoring - panel 1/1 Major News for 3 April 2004 back top next  
Risk monitoring yesterday 3 April Monday

One of three objects remaining with impact solutions is reported in the Saturday Daily Orbit Update MPEC, and its few solutions have now been removed. 2004 FY31 has observations from Powell Observatory yesterday morning in Kansas, Linz Observatory last night in Austria, and Great Shefford Observatory early today in England.

Summary Risk Table - sources checked at 1906 UTC, 3 Apr

Object

Assessment

Years

VI
PS
cum
PS
max
T
S
Arc 
days
 2004 FY31JPL 4/3R E M O V E D
NEODyS 4/3R E M O V E D
 2004 FU4NEODyS 4/2R E M O V E D
JPL 4/22085-20851-3.07-3.07013.259
 2004 FE31 NEODyS 4/22012-208025-3.01-3.2503.265
JPL 4/22035-20997-5.34-5.8503.265
VI = count of "virtual impactors" (impact solutions)
See A/CC's Consolidated Risk Tables for more and maybe
  newer details, and check the monitors' links for latest info.
Note that only objects recently in view are shown here.
http://www.HohmannTransfer.com/mn/0404/03.htm   [ top ]
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