| 词条 | HD 142022 |
| 释义 |
| name = HD 142022 | epoch = J2000.0 | constell = Octans | ra = {{RA|16|10|15.0238}} | dec = {{DEC|−84|13|53.802}} | appmag_v = 7.69 | absmag_v = 4.91 | dist_ly = 117 | dist_pc = 35.9 | spectral = G9V | names = CD−83 202, GC 21507, GCRV 65757, Gl 606.1, GJ 9536, HIP 79242, LTT 6382, SAO 258738 | Simbad = HD+142022 | ARICNS = 01252 | EPE = HD+142022+A }} HD 142022 is a binary star system{{citation needed|date=April 2017}} located in the southernmost constellation of Octans located at a distance of 117 ly. The primary star (HD 142022 A) has a spectral type of G9V and has apparent magnitude of 7.69. Its mass is 1% less than the Sun but the radius is only 70.5%. The star is old, only 400 million years younger than the Universe itself. It is a Population I star with metallicity of 55% greater than solar. The primary star has a single known planet, discovered in 2005. {{OrbitboxPlanet begin}}{{OrbitboxPlanet| exoplanet = b | mass = >4.47 | period = 1928 ± 46 | semimajor = 2.93 | eccentricity = 0.53 ± 0.20 }}{{Orbitbox end}} See also
References
External links{{Sky|16|10|15.0238|-|84|13|53.802|117}}{{Stars of Octans}}{{main-star-stub}} 8 : G-type main-sequence stars|Henry Draper Catalogue objects|Hipparcos objects|Octans|Planetary systems|Binary stars|Durchmusterung objects|Gliese and GJ objects |
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