61 Cygni /ˈsɪɡni/ is a binary star system in the constellation Cygnus, consisting of a pair of K-type dwarf stars that orbit each other in a period of...
50 KB (5,255 words) - 11:51, 22 June 2024
to a star other than the Sun, by Friedrich Bessel in 1838. The star was 61 Cygni, and he used a 160-millimetre (6.2 in) heliometre designed by Joseph von...
24 KB (1,934 words) - 19:24, 16 September 2024
spiral galaxy in the constellation Cetus 61 Ursae Majoris is located about 31.1 light-years from the Sun. [1] 61 Cygni was christened the "Flying Star" in...
9 KB (1,291 words) - 15:08, 12 August 2024
stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also...
51 KB (5,865 words) - 15:36, 27 September 2024
unchanged over the years, are: Sigma Draconis (K0 V) Epsilon Eridani (K2 V) 61 Cygni A (K5 V) Other primary MK standard stars include: 70 Ophiuchi A (K0 V)...
13 KB (1,420 words) - 17:34, 7 September 2024
binaries include 61 Cygni (a binary in the constellation Cygnus, composed of two K class (orange) main-sequence stars, 61 Cygni A and 61 Cygni B, which is...
68 KB (8,196 words) - 10:44, 8 October 2024
parallax measurements in 1832–1838, for the stars Alpha Centauri, Vega, and 61 Cygni. Stellar parallax is so small that it was unobservable until the 19th century...
22 KB (2,777 words) - 09:57, 27 August 2024
idea came from an object that was at the time believed to exist in the 61 Cygni system, and which might represent an extrasolar planet. The planet Mesklin...
38 KB (3,687 words) - 04:54, 4 October 2024
catalogue are sometimes indicated by the Greek letter sigma, Σ. Thus, 61 Cygni is also designated as Σ2758. Since most double stars are true binary stars...
13 KB (1,283 words) - 09:14, 13 September 2024
stellar parallax. In 1838 he published a parallax of 0.314 arcseconds for 61 Cygni, which indicated that the star is 10.3 ly away. Compared with the current...
30 KB (2,908 words) - 08:03, 24 September 2024