HD 8535

Star in the constellation Phoenix

HD 8535
Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Phoenix
Right ascension	01^h 23^m 37.23585^s^[1]
Declination	–41° 16′ 11.2795″^[1]
Apparent magnitude (V)	7.70^[2]
Characteristics
Spectral type	G0V^[3]
Apparent magnitude (B)	8.22^[4]
Apparent magnitude (J)	6.735^[5]
Apparent magnitude (H)	6.449^[5]
Apparent magnitude (K)	6.354^[5]
B−V color index	0.553±0.009^[2]
Astrometry

Radial velocity (R_v)	+2.51±0.12^[1] km/s
Proper motion (μ)	RA: +57.795 mas/yr^[1] Dec.: −69.879 mas/yr^[1]
Parallax (π)	18.0657 ± 0.0181 mas^[1]
Distance	180.5 ± 0.2 ly (55.35 ± 0.06 pc)
Absolute magnitude (M_V)	4.10^[2]

Details^[6]

Mass	1.17±0.02 `M`_☉
Radius	1.18±0.02 `R`_☉
Luminosity	1.85±0.01 `L`_☉
Surface gravity (log g)	4.36±0.02 cgs
Temperature	6,200±50 K
Metallicity [Fe/H]	0.02 dex
Rotational velocity (v sin i)	3.07^[7] km/s
Age	2.1±0.9 Gyr

Other designations
CD–41°359, GC 1693, HD 8535, HIP 6511, SAO 215484, PPM 305828^[8]
Database references
SIMBAD	data
Exoplanet Archive	data

HD 8535 is a star located 181 light-years (55 parsecs) away from the Sun in the southern constellation of Phoenix. It has a yellow hue and can be viewed using binoculars or a small telescope, having a low apparent visual magnitude of 7.70.^[2] The star is drifting further away from the Sun with a radial velocity of +2.5 km/s.^[1]

This is an ordinary G-type main-sequence star with a stellar classification of G0V.^[3] The luminosity class of 'V' indicates the star is generating energy through core hydrogen fusion. It is about two^[6] billion years old and is spinning slowly with a projected rotational velocity of 3 km/s.^[7] The abundance of elements other than hydrogen and helium in the star – what astronomers term metallicity – is about the same as in the Sun. It has 17% more mass than the Sun and an 18% greater radius. The star is radiating 1.85 times the luminosity of the Sun from its photosphere at an effective temperature of 6,200 K.^[6]

A survey in 2015 has ruled out the existence of any stellar companions at projected distances above 23 astronomical units.^[9] However, in 2019 a white dwarf companion to this star was found.^[10]

Planetary system

In 2009, a gas giant was found in orbit around the star using the radial velocity method. It has an orbital period of 3.59 years and has at least 68% of the mass of Jupiter.^[11]

The HD 8535 planetary system^[11]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥ 0.68+0.07 −0.04 M_J	2.45+0.04 −0.06	1,313±28	0.15+0.09 −0.05	—	—

References

^ ^a ^b ^c ^d ^e ^f 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 at VizieR.
^ ^a ^b ^c ^d 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 Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 2. Ann Arbor: Dept. of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862. ISBN 978-0333750889.
^ ^a ^b ^c Cutri, R. M.; et al. (June 2003). 2MASS All Sky Catalog of point sources. NASA/IPAC. Bibcode:2003tmc..book.....C.
^ ^a ^b ^c 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 Delgado Mena, E.; et al. (April 2015). "Li abundances in F stars: planets, rotation, and Galactic evolution". Astronomy & Astrophysics. 576: 24. arXiv:1412.4618. Bibcode:2015A&A...576A..69D. doi:10.1051/0004-6361/201425433. S2CID 56051637. A69.
^ "HD 8535". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-08.
^ Mugrauer, M.; Ginski, C. (12 May 2015). "High-contrast imaging search for stellar and substellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 450 (3): 3127–3136. Bibcode:2015MNRAS.450.3127M. doi:10.1093/mnras/stv771. hdl:1887/49340. Retrieved 19 June 2020.
^ Mugrauer, M. (December 2019). "Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release". Monthly Notices of the Royal Astronomical Society. 490 (4): 5088–5102. Bibcode:2019MNRAS.490.5088M. doi:10.1093/mnras/stz2673.
^ ^a ^b Naef, Dominique; Mayor, Michel; Lo Curto, Gaspare; Bouchy, François; Lovis, Christophe; Moutou, Claire; Benz, Willy; Pepe, Francesco; Queloz, Didier; Santos, Nuno C.; Ségransan, Damien; Udry, Stéphane; Bonfils, Xavier; Delfosse, Xavier; Forveille, Thierry; Hébrard, Guillaume; Mordasini, Christoph; Perrier, Christian; Boisse, Isabelle; Sosnowska, Danuta (2010). "The HARPS Search for Southern Extrasolar Planets XXIII. 8 Planetary Companions to Low-activity Solar-type Stars". Astronomy and Astrophysics. 523: A15. arXiv:1008.4600. Bibcode:2010A&A...523A..15N. doi:10.1051/0004-6361/200913616. S2CID 118845989.

Constellation of Phoenix

Stars

Bayer	α (Ankaa) β γ δ ε ζ (Wurren) η θ ι κ λ¹ λ² μ ν ξ π ρ σ τ υ φ χ ψ ω
Variable	RV SX YZ AD AE AI AW AZ BB BD
HR	6 23 73 109 111 120 140 148 162 171 198 202 209 229 299 350 408 411 443 447 519 524 537 574 588 632 636 659 686 698 706 8910 8920 8929 8959 8993 9001 9046 9077 9082
HD	2039 5388 6434 (Nenque) 8535 9895 11421 13218 13387 223549 224782
Other	CD-44 170 BPM 30551 HE 0107-5240 NGC 405 WASP-4 WASP-5 WASP-18 WASP-29 WASP-96 WD 2359-434