HD 184010

HD 184010 is a single evolved star in the constellation of Vulpecula. Its surface temperature is 4,987±10 K. HD 184010 has an orange/red hue and is visible to the naked eye with an apparent visual magnitude of 5.89. Based upon parallax measurements, it is located 200 light-years in distance from the Sun. The object is drifting further away from the Sun with a radial velocity of +5.73±0.12 km/s.^[2]

HD 184010

Location of HD 184010 in the night sky. The star is marked within the red square.
Observation data Epoch J2000      Equinox J2000
Constellation	Vulpecula[1]
Right ascension	19h 31m 21.62s[2]
Declination	+26° 37′ 01.8″[2]
Apparent magnitude (V)	5.89[3]
Characteristics
Evolutionary stage	red giant branch[3][2]
Spectral type	K0 III-IV[3]
Astrometry
Radial velocity (Rv)	5.73±0.12[2] km/s
Proper motion (μ)	RA: 10.965 mas/yr[2] Dec.: 25.121 mas/yr[2]
Parallax (π)	16.2940±0.0301 mas[2]
Distance	200.2 ± 0.4 ly (61.4 ± 0.1 pc)
Absolute magnitude (MV)	+1.98[1]
Details[3]
Mass	1.35+0.19 −0.21 M☉
Radius	4.86+0.55 −0.49 R☉
Luminosity	13.09+3.15 −2.65 L☉
Surface gravity (log g)	3.18+0.08 −0.07 cgs
Temperature	4,987±10[4] K
Metallicity [Fe/H]	−0.17±0.10 dex
Rotational velocity (v sin i)	1.34 km/s
Age	2.76+2.24 −0.95 Gyr
Other designations
HIP 96016, HR 7421, TYC 2133-2965-1, GSC 02133-02965, 2MASS J19312163+2637018[5]
Database references
SIMBAD	data
Exoplanet Archive	data

Planetary system

In 2022, three planets orbiting HD 184010 were discovered by the radial velocity method.^[3][4]

None of these three planets orbit in the habitable zone and all are believed to be gas giants.^[3]

The HD 184010 planetary system^[3][a]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥0.31+0.03 −0.04 MJ	0.940+0.005 −0.001	286.6+2.4 −0.7	0	—	—
c	≥0.30+0.03 −0.06 MJ	1.334+0.013 −0.005	484.3+5.5 −3.5	0	—	—
d	≥0.45+0.04 −0.06 MJ	1.920±0.012	836.4±8.4	0	—	—

See also

• List of exoplanets discovered in 2022

Notes

1. The preferred model assumes circular orbits.