η Piscium

Eta Piscium is a yellow giant, with a radius 26 times that of the Sun. It's the brightest star in Pisces.

Eta Piscium is also a close binary (BU 506): 3.8, 7.5; 62, 0.6".

This yellow giant is 15 northwest of alpha and easily found with the naked eye. In the same region is the very faint spiral galaxy M74 (one of the faintest of Messier's objects): binoculars.


The rest of the stars of interest in Pisces are very close to Andromeda, and it is easier to locate them by first locating some of the stars just southeast of alpha Andromedae.

So, from alpha Andromedae drop half way along the western side of the Great Square of Pegasus; now move two binocular fields east. (This may be far easier to do first with the naked eye.) You should be in the region of zeta Andromedae.

Placing zeta Andromedae at the top of your glasses, you will see two stars of Pisces southwest: binoculars.

The brightest of these two, 55 Piscium, is a binary (Struve 46) with a fine colour contrast, orange and blue: 5.6, 8.5; 194, 6.3".

Now moving your glasses north barely one field, with zeta And now on the southern edge you'll have 65 Piscium near the northern edge.

65 Piscium (Struve 61) is a fine binary of two equal magnitude white stars: 6.3, 6.3; 115, 4.3".

Southeast one field will show psi1 near the southern edge, and phi Piscium on the northeastern edge.
      psi1 Piscium (Struve 88): 5.3, 5.5; 159, 29.7".
      phi Piscium (Struve 99)AB: 4.7, 9.1; 221, 7.8".

The northern cord ends with sigma Piscium, two fields north of phi Piscium.

Click on sigma to continue.

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1999-2014 by Richard Dibon-Smith.