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- From: bcollins@utdallas.edu (Arlin B. Collins)
- Subject: Sky&Tel Weekly News Bulletin
- Message-ID: <BxvJ8C.I59@utdallas.edu>
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- Organization: Univ. of Texas at Dallas
- Date: Tue, 17 Nov 1992 18:55:23 GMT
- Lines: 115
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- ***
- SKY & TELESCOPE NEWS BULLETIN
- November 14, 1992
-
- PICKING UP SWIFT-TUTTLE
- With the Moon receding into the morning sky, it's much easier now to
- spot Comet Swift-Tuttle among the stars of eastern Hercules. In fact
- it's getting *so* easy, that Bill Smith of Ukiah, California, reports
- glimpsing it with his unaided eye. And this week you'll have a chance
- to do likewise in the hours after sunset. The comet has brightened to
- better than magnitude 5.5, so it should be a snap to spot even with
- small binoculars. You'll need to look for the comet before it sets in
- the northwest between 9 and 10 p.m. Swift-Tuttle is starting to pick up
- steam as it heads toward its perihelion on December 12th, moving closer
- to the Sun by 700,000 miles per day and a Moon's width across our skies
- every six hours. Here are the comet's positions for 0 hour Universal
- time and equinox 2000 coordinates:
-
- R.A. (2000) Dec.
- ================
- Nov. 14 17h 56m +25.9 deg.
- Nov. 16 18h 05m +23.1 deg.
- Nov. 18 18h 14m +20.3 deg.
- Nov. 20 18h 23m +17.6 deg.
-
- VENUS & THE TEAPOT
- An interesting optical illusion takes place this week in the southwest
- after sunset. Venus has become unmistakable as a brilliant beacon in
- that part of the sky, but after dark on the 18th it will also become
- the temporary top to the famous Teapot, a miniconstellation in
- Sagittarius. Usually the star Lambda Sagittarii occupies that location,
- and of course it's still there -- but Venus definitely overwhelms it.
-
- JAN OORT, 1900-92
- On November 5th the renowned astronomer Jan Hendrik Oort died in the
- Dutch town of Wassenaar at the age of 92. Oort is probably best known
- for predicting the existence of the solar system's distant swarm of
- comets, now named the Oort cloud, but there is hardly any topic in
- astronomy that did not benefit from his contributions. Ironically, Oort
- considered his work on distant comets just a sidelight. He and Bertil
- Lindblad of Sweden drew international recognition for their discovery,
- in 1927, that our galaxy rotates. Oort was among the first to realize
- the enormous potential of radio astronomy, and he also recognized the
- link between the Crab nebula and the supernova explosion of 1054. Oort
- served as president of the International Astronomical Union from 1958
- to 1961, and after retiring in 1970 he studied the center of the Milky
- Way and superclusters of galaxies.
-
- SUNSPOT GROUP
- Rick Kruzewski checked in to let us know that there's a naked-eye
- sunspot group currently crossing the solar disk. It's already past the
- meridian, so your best chance of seeing it is early this week.
-
- -----THIS WEEK'S "SKY AT A GLANCE"
-
- NOV 15 -- SUN
- Saturn's brightest moon Titan can be seen in a small telescope four
- ring lengths east of the planet.
-
- NOV 16 -- MON
- Venus is very close to the 3rd-magnitude star Lambda Sagittarii early
- this week. Binoculars help.
-
- The Leonid meteor shower should be at its peak early Tuesday morning,
- but moonlight interferes.
-
- NOV 17 -- TUE
- The eclipsing variable star Algol will be at minimum brightness,
- magnitude 3.4 instead of its usual 2.1, for a couple of hours centered
- on 10:56 p.m. Eastern standard time.
-
- Last quarter Moon (exact at 6:39 a.m. EST).
-
- NOV 18 -- WED
- The waning crescent Moon is near Jupiter Thursday and Friday mornings.
-
- NOV 19 -- THU
- *
-
- NOV 20 -- FRI
- Algol is at minimum around 7:45 p.m. EST.
-
- NOV 21 -- SAT
- Mercury is at inferior conjunction.
-
- ----- THIS WEEK'S PLANET ROUNDUP
-
- MERCURY is hidden in the glare of the Sun.
-
- VENUS is in the southwest as twilight fades, getting higher and
- brighter each week. It's on its way up to a grand apparition as the
- "evening star" this winter.
-
- MARS is in Gemini in line with fainter Pollux and Castor. It rises
- around 9 p.m. and shines high overhead in the early morning hours. Mars
- is getting big and bright on the way to its January 7th opposition;
- currently it's 11.6 arc seconds in apparent diameter.
-
- JUPITER, in Virgo, is the brightest "star" in the eastern sky before
- and during dawn.
-
- SATURN, in Capricornus, is the lone bright "star" in the
- south-southwest after dark.
-
- URANUS and NEPTUNE, faint at 6th and 8th magnitude respectively, are
- low in the southwest right after dusk.
-
- PLUTO is hidden behind the sunset.
-
- -----
- SkyLine is provided by the publishers of "Sky & Telescope" magazine.
- It may not be used for profit. It is released via "go astroforum" on
- CompuServe.
- --
- Arlin B Collins CompuServe: INTERNET:bcollins@utdallas.edu :-)
-