[AZ-Observing] Re: In Memory of Pierre Schwaar May 14, 1946-March 6, 2000
- From: Gene A Lucas <geneluca@xxxxxxxxxxxxx>
- To: sac-forum@xxxxxxxxxxxxx, EVACONLINE <EVAC@xxxxxxxxxxxxxx>, az-observing@xxxxxxxxxxxxx
- Date: Wed, 11 Mar 2009 21:40:47 -0700
I would like to add my thanks to Jennifer for this timely reminder about
our lost friend, Pierre.
Here is a bit of information about Pierre's asteroid:
13006 SCHWAAR
see: http://en.wikipedia.org/wiki/13006_Schwaar
Asteroid (13006) Schwaar is a main-belt asteroid that was discovered
Jan. 12, 1983 by Brian Skiff at the Anderson Mesa Station of the Lowell
Observatory.
Citation: Pierre-Yves Schwaar (1946-2000) was a well-regarded amateur
optician and telescope maker. He was also an accomplished observer and
photographer of the night sky, often making resourceful use of simple
apparatus.
(Reference: 2001 Jan 09 Minor Planet Circular 20010109)
Here is some information on the orbit -- which keeps it between Mars and
Jupiter, in the main belt of asteroids...
period = 1252.7706676 days or 3.43 yrs
inclination, i =28.51913 deg
eccentricity e = 0.2017889
semi-major axis, a = 2.2743053 AU
perihelion distance, q = 1.8153757 AU
aphelion distance, Q = 2.7332349 AU
absolute magnitude, H = 13.6 (calculated for a distance of 1 AU) --
converts to an approximate diameter of 5 to 12 km (3 to 7.5 miles;
depending upon albedo, the reflectance)
Ephemeris – March 2009
2009-Mar-12 00:00 RA 22 48 36.96 DEC -16 53 28.3 MAG 18.98 (and decreasing)
This places (13006) Schwaar near (west of) the star Delta Aquarius (Skat)
See: NASA-JPL Solar System Dynamics – Small Bodies Database Browser –
Asteroids
http://ssd.jpl.nasa.gov/?asteroids
Conversion of absolute magnitude H to diameter:
http://neo.jpl.nasa.gov/glossary/h.html
Gene Lucas
(17250)
Rick Tejera wrote:
>
> Jennifer,
>
> Thanks for the reminder and being the keeper of Pierre’s memory.
>
> /Clear Skies/
>
> */Rick Tejera/*
> */Editor SACnews,/*
> */Public Outreach Coordinator/*
> */Saguaro Astronomy Club/*
> */Phoenix, Arizona/*
> */www.saguaroastro.org/* <http://www.saguaroastro.org/>
> */saguaroastro/**/@/**/cox.net/*
>
> ------------------------------------------------------------------------
>
> *From:* sac-forum-bounce@xxxxxxxxxxxxx
> [mailto:sac-forum-bounce@xxxxxxxxxxxxx] *On Behalf Of *Jennifer Polakis
> *Sent:* Wednesday, March 11, 2009 20:55
> *To:* EVACONLINE
> *Cc:* sac-forum@xxxxxxxxxxxxx; az-observing@xxxxxxxxxxxxx
> *Subject:* [sac-forum] In Memory of Pierre Schwaar May 14, 1946-March
> 6, 2000
>
> http://www.saguaroastro.org/content/SACNEWS/sac2000/sn0400.pdf
>
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