a Lyncis


Alpha Lyncis is a red giant 222 light years away, with a visual magnitude of 3.14.

Finding alpha Lyncis can be a challenge, particularly if you don't enjoy the most perfectly black skies. The surest way to locate alpha Lyncis is to start in Cancer. If you've studied this constellation, you should be able to locate iota1 Cancri.
     From iota Cnc move up to the sigma-2 sigma-3 stars just to the northeast. Now place sigma-2 and sigma-3 at the right edge of your glasses. You should see alpha Lyncis on the left: alpha Lyn.

Centering your glasses on alpha, you'll see some fainter stars from Leo Minor to the east: binoculars.

The vicinity of alpha Lyn has some fine binaries which, if you can't resolve, you can at least find in binoculars. One of these is in the same field of view as alpha, to the west: Struve 1282.
    Struve 1282 is a splendid binary of 7.7 and 7.8 stars, 3.7" separation at 278º

To the northwest of alpha is the bright 38 Lyncis, a fine binary suitable for medium sized telescopes: 4.0, 6.3; 228º, 2.9". The binary designation of this star is Struve 1334.
    To the north-northeast of 38 Lyn is an even finer sight: Struve 1338, two nearly equal stars (6.9, 7.1), a challenge for medium telescopes as it is a rapidly orbiting binary with a period of 220 years.     On 1 January 2000 the values are 0.4" and 16º. In just twenty years the binary widens to 1.2" at 94º. The orbit is perfectly 'egg-shaped'.

Another rapid binary in this region is Kui 37 (4.2, 6.5), also known as 10 UMa, as it once was part of that constellation. This star's orbit is even faster, at 21.85 years. the 2000.00 values are: 46º at 0.6".

This selection of binaries is only a few of the many found in Lynx. Other fine examples are found in the northern extremes of the constellation.


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© 1999-2000 by Richard Dibon-Smith.