Key parameters at a glance

A radius of 13.60 Earth radii
A mass of 481.51 Earth masses
Surface gravity around 2.60 g
An orbital period of 355.500 days
Semi-major axis 1.0790 AU
Distance from Earth 176.76 light-years
Earth Similarity Index 0.341
Travel time at Voyager 1 speed 3,117,242 years

HD 210702 b Planet Profile

Physical Specs

Radius

13.60 R⊕

Radius (Jupiter)

1.210 R♃

Mass

481.51 M⊕

Mass (Jupiter)

1.515 M♃

Density

1.05 g/cm³

Surface Gravity

2.60 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.341

HZ Position Unknown

Controversial No

Discovery

Year 2007

Method Radial Velocity

Facility Lick Observatory

Telescope 3.0 m C. Donald Shane Telescope

Size rank in cohort

Rank by radius

#609of 1771

top 34.3%

This planet

13.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 19994 b 13.60 R⊕ HD 205739 b 13.60 R⊕ HD 79498 b 13.60 R⊕

Metric	Earth	HD 210702 b	Jupiter
Radius (R⊕)	1.00	13.60	11.21
Mass (M⊕)	1.00	481.51	317.83
Density (g/cm³)	5.51	1.05	1.33
Surface Gravity (g)	1.00	2.60	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	481.510 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 210702

HIP

HIP 109577

TIC

TIC 456826468

Gaia DR2

Gaia DR2 1775004778213735168

Gaia DR3

Gaia DR3 1775004778213735168

System

HD 210702

Percentile among Gas Giant cohort

Radius 13.600 R⊕ · percentile 63 / cohort 1771

Mass 481.510 M⊕ · percentile 48 / cohort 1747

Orbital period 355.50 d · percentile 62 / cohort 1533

Distance 54.20 pc · percentile 22 / cohort 1759

ESI 0.341 · percentile 68 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

355.500 days

Semi-major axis

1.0790 AU

Eccentricity

0.071

Inclination

— °

Year Length

A year here lasts approximately 355.50 Earth days (97.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 1.0790 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.341

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Johnson et al. 2007

Instrument

Hamilton Echelle Spectrograph

Publication

2007-08

Observation locale

Ground

Discovery cohort

Planets confirmed in 2007 at Lick Observatory (3 shown).

HD 192699 b · Gas Giant kap CrB b · Gas Giant HD 167042 b · Gas Giant

Host System: HD 210702

Spectral Class

K-type orange

Effective Temperature

4,912 K — cooler than the Sun (5,778 K)

Estimated Age

2.10 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

4.540 R☉

Stellar Mass

1.330 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

3.230 dex

Systemic radial velocity

16.39 km/s

Rotational v·sin i

1.99 km/s

Metallicity ratio

[Fe/H]

Distance

54.20 parsec

Light-years 176.76 ly

V-band magnitude

5.93 mag

Voyager-speed travel 3,117,242 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

18.423 mas

Total Proper Motion

17.459 mas/yr

PM Right Ascension

-3.24 mas/yr

PM Declination

-17.16 mas/yr

Galactic Cartesian (pc)

x = 0.856 · y = -0.437 · z = 0.276

Equatorial (J2000)

RA 332.96386° · Dec 16.04048°

Galactic ℓ, b

76.293° · -32.021°

Ecliptic λ, β

341.228° · 25.295°

HTM-20 index

1506696581

Similar Worlds

HS Psc b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 122.8 ly

HD 185283 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 102.4 ly

HD 331093 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 163.7 ly

HD 167042 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 162.0 ly

HD 10442 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 441.5 ly

HD 83443 c

Gas Giant · K-type orange

Radius 13.60 R⊕ · 133.4 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Lick Observatory Mission K-type orange Hosts