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.
| 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 | |
| Database references | |
| SIMBAD | data |
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]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 11.914+0.990 −1.768 MJ |
2.694+0.107 −0.118 |
4.203+0.021 −0.025 |
0.282+0.017 −0.014 |
38.898+15.759 −77.179° |
— |
Constellation of Perseus | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| Stars |
| ||||||||||||
| |||||||||||||
| Star clusters |
| ||||||||||||
| Nebulae |
| ||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||
| |||||||||||||
This subgiant-star-related article is a stub. You can help Wikipedia by expanding it. |