61 Cygni

61 Cygni (Struve 2758) is an attractive binary of two dwarf orange stars:
    5.2, 61; 152, 31.6". The component orbits the primary every 653.3 years.

61 Cygni has the distinction of being the first to have its parallax measured (in 1838).

The system is about one and a half binocular fields southeast of Deneb: binoculars, or two binocular fields north of zeta Cygni.

Tau Cygni, nearly centred in the same field, is a vast system of ten companions only suitable for larger telescopes; even then B is the most accessible. AB: 3.8, 6.6; 213, 0.9".

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1999-2014 by Richard Dibon-Smith.