Astronomy and Space

GJ 1245

GJ 1245 (Gliese 1245) is a double star with components G 208-44 and G 208-45, located 15.2 light-years (4.7 parsecs) away in the constellation Cygnus. G 208-44 is itself a closer double star made up of two red dwarfs, while G 208-45 is also a red dwarf. GJ 1245 is the 43rd closest stellar system to the Solar System. GJ 1245 A and B are both active flare stars, and the pair are collectively designated V1581 Cygni. The largest of the three stars, GJ 1245 A (G 208-44 A) is only 12% the Sun's mass. Of the other two stars, GJ 1245 C (G 208-44 B), is closest to star A at 2 AU away; it is 8% of the Sun's mass. The third star, GJ 1245 B (G 208-45), is 27 AU away from star A, and is estimated to complete an orbit every 279 years. It is slightly smaller and less luminous than GJ 1245 A.

Also on this shelf

See also

• ▸(175706) 1996 FG3
• ▸Fill flash
• ▸8 Cygni

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