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Update 01/13/03: The
period of the orbit is still not determined (it's in the thousands
of years) and the comet is nearing 355,000,000 miles away from Earth. I
can't see it visually even with our 20" telescope in the
observatory, but each time I look up towards the area of the North Star,
I know just where its at and am so glad it has paid us a visit and is
now on its way back home, a round-trip journey of billions of miles!
Update 9/25/02: Comet
Snyder-Murakami is now about 300,000,000 miles north of Earth, so there
is not much chance of an impact, at least on this go-round. The
period of the comet is still not known, as its orbit probably takes this
comet way out into the 'Oort Cloud'. The comet is still located in
the constellation Ursa Minor, and not too far from the 'bowl' of the
Little Dipper.
Update 5/16/02: The comet,
while still visible in moderate sized amateur telescopes, is getting
fainter as it recedes from the inner Solar System. It's current distance
from Earth is about 150,000,000 miles, and is located between the orbits
of Earth and Mars. It will continue to head north in our skies,
and will be in the constellations Draco and Ursa Minor (the little bear)
for the next few months (See the latest chart of its path above). For
more orbital information and a neat JAVA applet showing the comet's
position and current known orbit, visit JPL's
Near Earth Object web site.
Update 4/13/02: With more
observations of the comet being done nightly, the orbit is slowly being
refined. As of today, the comet's orbit appears to be 'hyperbolic'
rather than an 'ellipse'. An 'elliptical' orbit is a closed orbit,
similar to that of Earth, other planets, and most known comets. A
hyperbolic orbit is one in which is open ended, and for all practical
purposes, an object in this type of orbit will never return to our solar
system again!
In the early morning hours
of Monday, March 11, 2002, I was observing our beautiful Arizona night sky in the
constellation Aquila (The Eagle) rising in the east. This is a
constellation is which a good portion of the Summer Milky Way is
visible. It was not too long before sunrise, so I was just moving
the telescope around and looking at some glorious collections of stars
when I came across a faint patch of light that none of the current
astronomy catalogs showed. I watched this 'object' for awhile, and
over a period of about 1/2 hour, I noticed that is was slowly moving to
the north. This was possibly an undiscovered comet! Well, to
make a long story short, I was in contact with the International
Astronomical Union before too long and within the next day, they
confirmed that this was a comet discovery! I had found it none too
soon, because just a few hours later, an amateur astronomer in Japan
(Shigeki Murakami) also found it. The name has officially become
Comet Snyder-Murakami after the orbital elements were calculated by
astronomers at the IAU . The comet also has the designation of C/2002
E2.
This is such a rare and rewarding event, and I am
still so overwhelmed at my luck in finding it. This is the
first comet visually discovered in the United States in almost four
years. Once more is
known about this comet, then I'll add
more information on a new page and of course include some
pictures. Information on its position in space and it orbital
elements for those with astronomy software programs that accept such
numbers can be found at this web site: http://cfa-www.harvard.edu/iau/Ephemerides/Comets/2002E2.html
As far as anyone knows, this is the first comet
discovery ever in Cochise County, Arizona, and the first visual comet
discovery within the United States in four years. Most comets
these days are discovered by CCD cameras (digital) attached to telescopes.
Right now (March 16), this
comet is visible only through a telescope as a morning object, It
does not appear that it will brighten to any degree, but will remain at
a consistent brightness (approximately magnitude 10) for several weeks.
The comet is still continuing north in the sky, presently in the
constellation of Aquila, then passing through Sagitta and into Vulpecula
by the end of March. In early April, it will enter Lyra. We'll certainly keep it in view and let you
know what is going on with it! |