Wednesday1 September 200411:32am MDT2004-09-01 UTC 1732

News briefs

Fred Whipple:  The Harvard-Smithsonian Center for Astrophysics issued a news release yesterday (photos) about the passing of Fred Whipple, “the oldest living American astronomer and one of the last giants of 20th century astronomy.” Sky & Telescope has an Astro News Brief from Monday, Astronomy.com has a long piece from yesterday, and Space.com has an Associated Press wire story from yesterday. See more links yesterday.

Comet news:  Sky & Telescope has an article from Sunday about comet C/2004 Q2 (Machholz) that says the MPC-calculated orbit

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Today's issue status: done

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“suggests that the comet could brighten to naked-eye visibility in early January.” The discovery was reported Friday and the first MPEC was issued Saturday. MPEC 2004-Q69 Monday now puts perihelion at 1.203 AU on January 24th, and the MPC Ephemeris Service (MPES) presently shows closest approach to Earth at 0.345 AU during 5-7 January



Risk monitoring yesterday 1 Sept. tomorrow

At last check Wednesday, there is no risk monitoring news to report today.

Summary Risk Table - sources checked at 1709 UTC, 1 Sep

Object

Assessment

Years

VI
PS
cum
PS
max
T
S
Arc 
days
 2004 QB17 NEODyS 8/292020-20718-5.13-5.7302.739
JPL 8/292013-209712-4.71-5.0902.739
 2004 FU162JPL 8/242006-2104824-5.38-6.3700.031
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.
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