Key parameters at a glance

A radius of 13.40 Earth radii
A mass of 647.10 Earth masses
Surface gravity around 3.60 g
An orbital period of 673.200 days
Semi-major axis 1.7400 AU
Distance from Earth 480.08 light-years
Earth Similarity Index 0.367
Travel time at Voyager 1 speed 8,466,132 years

HD 206610 b Planet Profile

Physical Specs

Radius

13.40 R⊕

Radius (Jupiter)

1.190 R♃

Mass

647.10 M⊕

Mass (Jupiter)

2.036 M♃

Density

1.48 g/cm³

Surface Gravity

3.60 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.367

HZ Position Unknown

Controversial No

Discovery

Year 2009

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I Telescope

Size rank in cohort

Rank by radius

#730of 1771

top 41.2%

This planet

13.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 114783 c 13.40 R⊕ HIP 79431 b 13.40 R⊕ HD 68988 b 13.40 R⊕

Metric	Earth	HD 206610 b	Jupiter
Radius (R⊕)	1.00	13.40	11.21
Mass (M⊕)	1.00	647.10	317.83
Density (g/cm³)	5.51	1.48	1.33
Surface Gravity (g)	1.00	3.60	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	647.102 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 206610

HIP

HIP 107251

TIC

TIC 333314269

Gaia DR2

Gaia DR2 2667434008056899712

Gaia DR3

Gaia DR3 2667434008056899712

System

HD 206610

Percentile among Gas Giant cohort

Radius 13.400 R⊕ · percentile 56 / cohort 1771

Mass 647.102 M⊕ · percentile 56 / cohort 1747

Orbital period 673.20 d · percentile 72 / cohort 1533

Distance 147.19 pc · percentile 44 / cohort 1759

ESI 0.367 · percentile 76 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

673.200 days

Semi-major axis

1.7400 AU

Eccentricity

0.100

Inclination

— °

Year Length

A year here lasts about 1.84 Earth years on a mildly elliptical path at a mean orbital distance of 1.7400 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.367

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Johnson et al. 2010

Instrument

HIRES Spectrometer

Publication

2010-05

Observation locale

Ground

Discovery cohort

Planets confirmed in 2009 at W. M. Keck Observatory (12 shown).

HD 13931 b · Gas Giant HAT-P-13 c · Gas Giant HD 181342 b · Gas Giant HD 212771 b · Gas Giant HD 136418 b · Gas Giant HIP 79431 b · Gas Giant HD 4313 b · Gas Giant HD 180902 b · Gas Giant HD 95089 b · Gas Giant GJ 179 b · Gas Giant HD 34445 b · Gas Giant GJ 649 b · Gas Giant

Host System: HD 206610

Spectral Class

K-type orange

Effective Temperature

4,842 K — cooler than the Sun (5,778 K)

Estimated Age

3.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

6.120 R☉

Stellar Mass

1.550 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

3.220 dex

Systemic radial velocity

-18.31 km/s

Rotational v·sin i

1.77 km/s

Metallicity ratio

[Fe/H]

Distance

147.19 parsec

Light-years 480.08 ly

V-band magnitude

8.34 mag

Voyager-speed travel 8,466,132 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

6.767 mas

Total Proper Motion

2.756 mas/yr

PM Right Ascension

1.98 mas/yr

PM Declination

1.92 mas/yr

Galactic Cartesian (pc)

x = 0.821 · y = -0.557 · z = -0.129

Equatorial (J2000)

RA 325.85376° · Dec -7.40825°

Galactic ℓ, b

47.877° · -41.348°

Ecliptic λ, β

325.594° · 5.918°

HTM-20 index

-1952206210

Observation Record

Photometric series

RV measurements

Stellar spectra

Similar Worlds

HD 93083 b

Gas Giant · K-type orange

Radius 13.40 R⊕ · 93.0 ly

Kepler-48 e

Gas Giant · K-type orange

Radius 13.40 R⊕ · 1,000.4 ly

HD 47366 b

Gas Giant · K-type orange

Radius 13.40 R⊕ · 275.1 ly

HIP 114933 b

Gas Giant · K-type orange

Radius 13.40 R⊕ · 331.9 ly

HD 114783 c

Gas Giant · K-type orange

Radius 13.40 R⊕ · 68.7 ly

HD 4732 b

Gas Giant · K-type orange

Radius 13.40 R⊕ · 178.7 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries W. M. Keck Observatory Mission K-type orange Hosts