Star in the constellation Eridanus
HD 30562 is astar in theequatorial constellation ofEridanus . It has a golden hue and can be viewed with the naked eye under good seeing conditions, having anapparent visual magnitude of 5.77.[ 2] The distance to this star is 85 light years based onparallax .[ 1] It is drifting further away with a highradial velocity of +77 km/s,[ 7] having come to within 46.8 light-years some 236,000 years ago.[ 2]
Thestellar classification of HD 30562 has varied somewhat depending on the study, including types G2IV,[ 3] G5V,[ 4] and F8V.[ 5] It is about 4.4[ 6] billion years old and appears to bechromospherically inactive .[ 5] The star is spinning with aprojected rotational velocity of 5.8 km/s,[ 8] giving it arotation period of 24.2 days.[ 5] Based on the abundance of iron appearing in thesprectrum , themetallicity of this star, what astronomers term the abundance of elements with higheratomic numbers than helium, is about 70% higher than in the Sun.[ 8] HD 30562 has 25% greater mass than the Sun and a 57% larger radius. The star is radiating almost three times the luminosity of the Sun from itsphotosphere at aneffective temperature of 5,983 K.[ 6]
In August 2009, it was found that this star has aJupiter -like planet that orbits in a very eccentric path.[ 5] [ 10] In 2023, the inclination andtrue mass of HD 30562 b were determined viaastrometry .[ 11]
^a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 .Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 .S2CID 244398875 . Gaia DR3 record for this source atVizieR .^a b c d e f g h i j Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters .38 (5): 331.arXiv :1108.4971 .Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 .S2CID 119257644 . ^a b Gray, R. O.; et al. (July 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I".The Astronomical Journal .132 (1):161– 170.arXiv :astro-ph/0603770 .Bibcode :2006AJ....132..161G .doi :10.1086/504637 .S2CID 119476992 . ^a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars".Michigan Spectral Survey .5 .Bibcode :1999MSS...C05....0H . ^a b c d e f Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory".The Astrophysical Journal .703 (2):1545– 1556.arXiv :0908.1596 .Bibcode :2009ApJ...703.1545F .doi :10.1088/0004-637X/703/2/1545 .S2CID 15524804 . ^a b c d Bonfanti, A.; et al. (2015)."Revising the ages of planet-hosting stars" .Astronomy and Astrophysics .575 . A18.arXiv :1411.4302 .Bibcode :2015A&A...575A..18B .doi :10.1051/0004-6361/201424951 .S2CID 54555839 . ^a b Nidever, David L.; et al. (August 2002). "Radial Velocities for 889 Late-Type Stars".The Astrophysical Journal Supplement Series .141 (2):503– 522.arXiv :astro-ph/0112477 .Bibcode :2002ApJS..141..503N .doi :10.1086/340570 .S2CID 51814894 . ^a b c d Luck, R. Earle (January 2017)."Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants" .The Astronomical Journal .153 (1): 19.arXiv :1611.02897 .Bibcode :2017AJ....153...21L .doi :10.3847/1538-3881/153/1/21 .S2CID 119511744 . 21. ^ "HD 30562" .SIMBAD .Centre de données astronomiques de Strasbourg . Retrieved2021-01-14 .^ Marmier, M.; et al. (2013)."The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets" .Astronomy and Astrophysics .551 . A90.arXiv :1211.6444 .Bibcode :2013A&A...551A..90M .doi :10.1051/0004-6361/201219639 .S2CID 59467665 . ^a b Xiao, Guang-Yao; Liu, Yu-Juan; et al. (March 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements".Research in Astronomy and Astrophysics .23 (5).arXiv :2303.12409 .Bibcode :2023RAA....23e5022X .doi :10.1088/1674-4527/accb7e .S2CID 257663647 .