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NASA Astronomer to Discuss Best Viewing of Rare Comet May 12-13

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  • NASA Astronomer to Discuss Best Viewing of Rare Comet May 12-13

    <table border="0" cellpadding="0" cellspacing="0" width="516"> <tbody><tr><td align="left" width="400">North Alabamians Can View Rare Comet May 12-13; NASA Astronomer to Discuss Best Viewing at May 10 Media Briefing

    <!-- Title ends --></td><td align="right" width="116"> 05.03.06

    </td></tr><tr><td colspan="2"><!-- Body starts --> Steve Roy
    Marshall Space Flight Center, Huntsville, Ala.
    (Phone: 256.544.0034)

    Media advisory: 06-063


    What: To preview a disintegrating comet that will be viewable from North Alabama in mid-May, NASA astronomer Bill Cooke from NASA's Marshall Space Flight Center in Huntsville, Ala., will speak with the media May 10 about this unique phenomenon. The 73P/Schwassmann-Wachmann 3 ? the 73rd recognized periodic comet in our solar system -- will be viewable to North Alabama residents using a telescope or binoculars during the first couple of weeks in May.

    Discovered in 1930, the comet comes nearest to the Earth every 5 years. In 1995, the comet began to disintegrate. As of March 2006, at least 40 different fragments of the comet are known to be flying through the solar system. These fragments are expected to fly closest to the Earth around May 12, at a distance of approximately 7.3 million miles -- about 30 times the distance from Earth to the moon.

    Cooke and other astronomers will be watching the bright comet fragments to calculate their various trajectories for future years. The fragments can be seen low in the northeastern sky beginning around 11:30 p.m. CDT, Friday, May 12, with the best viewing at 4 a.m., Saturday, May 13, in the eastern sky, said Cooke.

    Who: Bill Cooke, meteor shower forecaster in the Marshall Center's Engineering Directorate

    When: 10 a.m. CDT, Wednesday, May 10

    Where: Marshall Center Bldg. 4200 Press Room

    To attend: News media interested in covering the event should contact Steve Roy of the Marshall Public and Employee Communications Office at (256) 544-0034. Media must report to the Redstone Joint Visitor Control Center at Gate 9, Interstate 565 interchange at Rideout Road/Research Park Boulevard. Vehicles are subject to a security search at the gate. News media will need two photo identifications and proof of car insurance. Visitor parking is available in front of Bldg. 4200 on the southwest side.


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  • #2
    Re: NASA Astronomer to Discuss Best Viewing of Rare Comet May 12-13

    Observations of Comet 73P/Schwassman-Wachmann 3

    Observations by Carl Hergenrother (Lunar and Planetary Lab [LPL], University of Arizona & Smithsonian Astrophysical Observatory [SAO]), Gil Esquerdo (Planetary Science Institute [PSI] and SAO), Kyle Smalley (SAO) and John Keller (LPL).

    Latest News (Updated 2006 May 5, 20:00 UT):

    Images of 73P-B from May 5 UT are now up.

    Gil Esquerdo (SAO and PSI) kindly observed 73P-B and G last night with the SAO 1.2-m.

    The central condensation of 73P-B is once again stretched into a bar elongated towards the anti-solar (or tailward) direction. This appearance has been seen twice before in the past month and suggets that the main nucleus of 73P-B has experienced a splitting or shedding event. Material shedded from the material is now fallen behind the main nucleus.

    The remnants from an earlier splitting event are still visible to the southwest (lower right in my images) of the main nucleus. At least a dozen components are visible. Note that the SAO 1.2-m is a smaller telescope at a sight with inferior seeing to the Vatican 1.8-m on Mount Graham. The 1.2-m should not be expected to see as much detail as the 1.8-m.


    <hr size="20"> The latest images are posted below. Older images of 73P's major components can be found here: 73P-B, 73P-C, 73P-G.


    The Department of Planetary Sciences/Lunar and Planetary Laboratory is an academic institution that pursues scholarly research and education across the broad discipline of planetary and solar systems science.

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