“HD 103197”的意思、由来-开放百科全书

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HD 103197

释义

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{{Starbox begin
| name = HD 103197
}}{{Starbox observe
| epoch = J2000.0
| constell = Centaurus
| ra = {{RA|11|52|52.979}}^[1]
| dec = {{DEC|–50|17|34.17}}^[1]
| appmag_v = 9.41
}}{{Starbox character
| class = K1Vp
| appmag_1_passband = B
| appmag_1 = 10.26
| appmag_2_passband = J
| appmag_2 = 7.916
| appmag_3_passband = H
| appmag_3 = 7.600
| appmag_4_passband = K
| appmag_4 = 7.426
| r-i =
| v-r =
| b-v = 0.85
| u-b =
| variable =
}}{{Starbox astrometry
| radial_v =
| prop_mo_ra = –80.24 ± 0.91^[1]
| prop_mo_dec = 6.61 ± 0.99^[1]
| parallax = 18.82
| p_error = 1.41
| parallax_footnote = ^[1]
| absmag_v = 5.95
}}{{Starbox detail
| mass = 0.76
| radius = 0.88 ± 0.11
| gravity = 4.28
| luminosity = 0.434 ± 0.073
| temperature = 5020 ± 100
| metal_fe = 0.21
| rotation =
| age_gyr =
}}{{Starbox catalog
| names = CD−49°6573, HIP 57931, PPM 769972
}}{{Starbox reference
| Simbad = HD+103197
| NSTED = HD+103197
| EPE = HD+103197
}}{{Starbox end}}

HD 103197 is a 9th magnitude K-type main sequence star located approximately 170 light years away^[1] in the constellation Centaurus. The star is smaller, cooler, dimmer, and less massive than our Sun. Its metal content is thirteen-eighths as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.

{{OrbitboxPlanet begin
| table_ref =
}}{{OrbitboxPlanet
| exoplanet = b
| mass_earth = ≥31.2 ± 2.0
| period = 47.84 ± 0.03
| semimajor = 0.249 ± 0.004
| eccentricity = 0.0(fixed)
}}{{Orbitbox end}}

References

1. ^¹²³⁴⁵⁶{{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }}Vizier catalog entry

^[1]
}}{{Sky|11|52|52.9787|-|50|17|34.160|160.9}}{{Stars of Centaurus}}{{main-star-stub}}{{extrasolar-planet-stub}}

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