Key parameters at a glance

A radius of 12.10 Earth radii
A mass of 5,914.79 Earth masses
Surface gravity around 40.40 g
An orbital period of 1,854.844 days
Semi-major axis 3.0800 AU
Distance from Earth 330.62 light-years
Earth Similarity Index 0.300
Travel time at Voyager 1 speed 5,830,445 years

HD 214823 b Planet Profile

Physical Specs

Radius

12.10 R⊕

Radius (Jupiter)

1.080 R♃

Mass

5,914.79 M⊕

Mass (Jupiter)

18.610 M♃

Density

18.30 g/cm³

Surface Gravity

40.40 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.300

HZ Position Unknown

Controversial No

Discovery

Year 2016

Method Radial Velocity

Facility Haute-Provence Observatory

Telescope 1.93 m Telescope

Size rank in cohort

Rank by radius

#1454of 1771

top 82.0%

This planet

12.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 62364 b 12.10 R⊕ HD 106515 A b 12.10 R⊕ BD+20 2457 b 12.10 R⊕

Metric	Earth	HD 214823 b	Jupiter
Radius (R⊕)	1.00	12.10	11.21
Mass (M⊕)	1.00	5,914.79	317.83
Density (g/cm³)	5.51	18.30	1.33
Surface Gravity (g)	1.00	40.40	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	5,914.787 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	6,229.437 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 214823

HIP

HIP 111928

TIC

TIC 115779095

Gaia DR2

Gaia DR2 1889143121789650176

Gaia DR3

Gaia DR3 1889143121789650176

System

HD 214823

Percentile among Gas Giant cohort

Radius 12.100 R⊕ · percentile 16 / cohort 1771

Mass 5,914.787 M⊕ · percentile 96 / cohort 1747

Orbital period 1,854.84 d · percentile 84 / cohort 1533

Distance 101.37 pc · percentile 35 / cohort 1759

ESI 0.300 · percentile 58 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,854.844 days

Semi-major axis

3.0800 AU

Eccentricity

0.161

Inclination

99.51 °

Year Length

A year here lasts about 5.08 Earth years on a mildly elliptical path at a mean orbital distance of 3.0800 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.300

0 = alien, 1 = Earth-identical

Detection Signatures

Radial velocity

Stellar wobble has been measured spectroscopically.

Astrometry

Positional wobble of the host star was measured.

Discovery Paper

Primary reference

D Iacute Az et al. 2016

Instrument

SOPHIE Spectrograph

Publication

2016-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2016 at Haute-Provence Observatory (10 shown).

HD 35759 b · Gas Giant HD 220842 b · Gas Giant HD 12484 b · Gas Giant HD 191806 b · Gas Giant HIP 109600 b · Gas Giant HD 221585 b · Gas Giant HIP 109384 b · Gas Giant HD 143105 b · Gas Giant HIP 65407 c · Gas Giant HIP 65407 b · Gas Giant

Host System: HD 214823

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

6,215 K — hotter than the Sun (5,778 K)

Estimated Age

2.70 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

2.040 R☉

Stellar Mass

1.115 M☉

Metallicity [Fe/H]

0.17

Extended Stellar Properties

Surface gravity (log g)

4.050 dex

Stellar density

0.159 g/cm³

Systemic radial velocity

-44.50 km/s

Rotational v·sin i

5.70 km/s

Rotation period

17.50 days

Metallicity ratio

[Fe/H]

Distance

101.37 parsec

Light-years 330.62 ly

V-band magnitude

8.06 mag

Voyager-speed travel 5,830,445 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

9.837 mas

Total Proper Motion

83.203 mas/yr

PM Right Ascension

81.22 mas/yr

PM Declination

-18.05 mas/yr

Galactic Cartesian (pc)

x = 0.799 · y = -0.290 · z = 0.527

Equatorial (J2000)

RA 340.08321° · Dec 31.78752°

Galactic ℓ, b

92.860° · -23.319°

Ecliptic λ, β

355.979° · 36.761°

HTM-20 index

-1179258573

Observation Record

Photometric series

Stellar spectra

Archive notes