https://planetstar.fandom.com/wiki/61_Cygni_system?oldid=10788. Like these other planets, this one has a very eccentric orbit, halfway between the eccentricities of other planets in value. And it was the first star to have its distance accurately measured. The surface temp is −221°F, slightly colder than Saturn. High overhead on early fall evenings, in a busy region of the Milky Way near Deneb, is a rather ordinary double star. 61 Cygni is the first star other than our Sun to have its distance measured using the parallax. 10182 ships passed through 61 Cygni space, including 70 ships in the last 7 days. However, the maximum eccentricity during this long-term cycle is as high as 0.25, reached 260,000 years ago. The stars orbit the center of mass once every 659 years at an average separation of 84 AU. 61 Cyg Ad has more mass than two other planets combined. In 1838, Friedrich Bessel calculated the distance as 10.4 light-years, close to the modern figure. ; Based on the spectral type (B2V) of the star, the star's colour is blue . The primary star, 61 Cygni A is 30% less massive than the Sun, has a spectral classification of K5 displaying a strong deep yellow / orange. The system also has a large proper motion due to its velocity of 108 km/s relative to our Solar System. The wikipedia:en:61 Cygni binary star system comprises 61 Cygni A, also referred to as Swan, and a partner of unknown nickname but known formally as 61 Cygni B. This system was located approximately eleven light years from the Sol system, part of the constellation Cygnus . In 2364, the location of 61 Cygni was labeled in a star chart of the stellar neighborhood with Sol at the center. 61 Cyg Ac has mass 22 Earth masses and diameter 64.3 megameters, producing the density slightly less than water. The description is based on the spectral class. first human-crewed interstellar colonization effort, https://revelationspace.fandom.com/wiki/61_Cygni_system?oldid=6900. The planet takes 3.13 days or 75.2 hours to rotate once on its axis. This star, 61 Cygni, isn’t one of the brightest stars. The first such claim was made in 1942 by detecting systematic variations of component stars' orbits. Take your favorite fandoms with you and never miss a beat. 61 Cygni is a binary star system in the constellation Cygnus. 19 Cygni. The planet's surface gravity is 6⁄7 of that of Earth's. The planet's composition and structure is similar to 61 Cyg Ab. 61 Cygni Ac is a planet that takes 98% of an Earth year to orbit the star at a distance of 7⁄8 that of Earth's. 18-19) establishes that system as the location of Tellar. It's density is very similar to 61 Cyg Bb, and this planet has similar structure and composition to that planet, except the surface is not covered in oceans. It is a Neptune-mass planet, massing 14.6 Earth masses and has diameter of 57.8 megameters. It moves across the sky faster than all but about a half-dozen other stars. The planet's surface contains few bodies of water in the form of lakes that often steam. Nearby star system containing two orange dwarves. 6 ships passed through 61 Cygni space in the last 24 hours. The planet's density is just 6⁄7 of that of water and under 1⁄6 of that of Earth's, and half the density of Neptune. 61 Cyg Bc orbits at a semimajor axis of 0.61 AU, which is 3⁄5 of the semimajor axis of Earth. Deneb, Alpha Cygni (α Cyg), is a class A supergiant located at an approximate distance of 1,550 light years from Earth. Smaller and dimmer than Sol… As such, the … The planet Tellar Prime and its moon Scott are both located in this system. Because this planet orbits farther away from the parent star than 61 Cyg Ab, this planet is colder with the surface temp of −98°F. 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