Ross 614
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Double star Ross 614 |
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | unicorn | ||||||||||||||||
| Known exoplanets |
0 |
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| Astrometry | |||||||||||||||||
| Radial velocity | +16.70 km / s | ||||||||||||||||
| parallax | 242.9659 ± 0.8833 mas | ||||||||||||||||
| distance | 13,424 ± 0.049 Lj (4.1158 ± 0.015 pc ) |
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| Absolute visual brightness M vis | 13.09 / 16.17 mag | ||||||||||||||||
| Proper movement : | |||||||||||||||||
| Rec. Share: | (750.140) mas / a | ||||||||||||||||
| Dec. portion: | (-802.947) mas / a | ||||||||||||||||
| orbit | |||||||||||||||||
| period | 16,595 ± 0.0077 a | ||||||||||||||||
| Major semi-axis | 2.4-5.3 AU | ||||||||||||||||
| Individual data | |||||||||||||||||
| Names | A; B. | ||||||||||||||||
| Observation data: | |||||||||||||||||
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Right ascension |
A. | 06 h 29 m 23.39 s | |||||||||||||||
| B. | 06 h 29 m 23.52 s | ||||||||||||||||
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declination |
A. | −2 ° 48 ′ 48.8 ″ | |||||||||||||||
| B. | −2 ° 48 ′ 51.1 ″ | ||||||||||||||||
| Apparent brightness | A. | 11.15 likes | |||||||||||||||
| B. | 14.23 mag | ||||||||||||||||
| Typing: | |||||||||||||||||
| Spectral class | A. | M4.5 V | |||||||||||||||
| B. | M8 V | ||||||||||||||||
| B − V color index | A. | 1.693 | |||||||||||||||
| B. | (1.77) | ||||||||||||||||
| U − B color index | A. | 1.178 | |||||||||||||||
| Physical Properties: | |||||||||||||||||
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Absolute vis. Brightness M vis |
A. | 13.09 mag | |||||||||||||||
| B. | 16.17 likes | ||||||||||||||||
| Dimensions | A. | 0.22 M ☉ | |||||||||||||||
| B. | 0.117 M ☉ | ||||||||||||||||
| radius | A. | 0.25 R ☉ | |||||||||||||||
| B. | 0.13 R ☉ | ||||||||||||||||
| Other names and catalog entries |
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Ross 614 is a binary star system 13.36 light years away from the sun in the constellation Unicorn and is one of the stars that are closest to the sun . It is made up of two red dwarfs that will move into orbit with a separation of over 2.4 AU in approximately 16.6 years . Both stars are variable and show random flares . Ross 614 A is a UV Ceti star .
The larger primary star is called Ross 614 A (LHS 1849), the smaller secondary star is called Ross 614 B (LHS 1850). Component A has 22% of the solar mass and 25% of the solar radius , component B about 11.7% of the solar mass and 13% of the solar radius.
discovery
Ross 614 A was discovered in 1927 by Frank Elmore Ross at the Yerkes Observatory with a 100 cm telescope. Ross then included this new star, along with many others he discovered, in his catalog of the same name. The discovery of the binary star system was made in 1936 by Dirk Reuyl using the 26-inch telescope from the McCormick Observatory at the University of Virginia . In 1951, Sarah L. Lippincott made the first reasonably accurate predictions about the position of Ross 614 B with the 61 cm telescope of the Sproul Observatory. These calculations were used by Walter Baade to compare the binary star system for the first time with the then new Hale- Telescope at the Palomar Observatory in California to be found and optically resolved.