HD 23596

HD 23596
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Perseus
Right ascension	03h 48m 00.37471s[1]
Declination	+40° 31′ 50.2940″[1]
Apparent magnitude (V)	7.24
Characteristics
Evolutionary stage	subgiant[1]
Spectral type	F8
Astrometry
Radial velocity (Rv)	−10.18±0.13[1] km/s
Proper motion (μ)	RA: 52.742±0.039 mas/yr[1] ; Dec.: 21.740±0.026 mas/yr[1]
Parallax (π)	19.3247 ± 0.0306 mas[1]
Distance	168.8 ± 0.3 ly ; (51.75 ± 0.08 pc)
Details
Mass	1.2±0.04[2] M☉
Radius	1.53±0.04[2] R☉
Luminosity	2.63±0.03[2] L☉
Surface gravity (log g)	4.14±0.03[2] cgs
Temperature	5,953±48[2] K
Age	5.0±0.7[2] Gyr
Other designations
	BD+40º835, HIP 17747, SAO 39110
Database references
SIMBAD	data

HD 23596 is a 7th magnitude star approximately 170 light years away in the constellation Perseus. The visual luminosity of the star is 2.63 times greater than the Sun.[2] HD 23596 dwarfs the Sun is terms of physical properties; including mass, radius, age, metallicity, and temperature. The spectrum of the star is F8.

Planetary system

In June 2002, a massive long-period planet orbiting the star was announced.[3] In 2022, the inclination and true mass of HD 23596 b were measured via astrometry.[4]

The HD 23596 planetary system[4]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (years)	Eccentricity	Inclination	Radius
b	11.914+0.990 −1.768 M_J	2.694+0.107 −0.118	4.203+0.021 −0.025	0.282+0.017 −0.014	38.898+15.759 −77.179°	—

References

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.
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.
Perrier, C.; et al. (2003). "The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates". Astronomy and Astrophysics. 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode:2003A&A...410.1039P. doi:10.1051/0004-6361:20031340. S2CID 6946291.
Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.

External links

"Notes for star HD 23596". The Extrasolar Planet Encyclopaedia.
"HD 23596". SIMBAD. Centre de données astronomiques de Strasbourg.

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[Gaia_DR3-1] 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.

[Bonfanti2015-2] 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.

[Perrier2003-3] Perrier, C.; et al. (2003). "The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates". Astronomy and Astrophysics. 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode:2003A&A...410.1039P. doi:10.1051/0004-6361:20031340. S2CID 6946291.

[Feng2022-4] Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.