BETA MON (Beta Monocerotis). Dim constellations commonly hold remarkable sights. The luminary of Monoceros, the Unicorn, a modern constellation, is among them.
[5505] beta Monocerotis is a triple star, with three components forming a fixed triangle. It can be spotted in a small telescope.
02 2356 beta MON 06 28 48.9 -07 01 59 B3Ve 4.60 -0.10 2357 beta MON 06 28 49.4 -07 02 04 B3ne 5.40 -0.07 2358 beta MON 06 28 49.4 -07 02 04 B3e 5.60 0.00 2227 gamma MON 06 14 51.3 -06 16 29 K3III 3.98 1.32 2714 delta MON 07 11 51.8 -00 29 34 A2V 4.
Beta Monocerotis is an impressive triple star system, the three stars form a triangle which seems to be fixed. The visual magnitudes of the stars are 4.7, 5.2 and 6.1.
Double stars in Monoceros: Beta Monocerotis is a wonderful triple star system, especially for smaller telescopes. William Herschel, who discovered it in 1781, thought it was one of the best he'd ever seen.
 See also: Magnitude, Monoceros, Delta, Star, Constellation
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