Key parameters at a glance

A radius of 13.40 Earth radii
A mass of 661.72 Earth masses
Surface gravity around 3.69 g
An orbital period of 360.080 days
Semi-major axis 1.2070 AU
Distance from Earth 275.13 light-years
Earth Similarity Index 0.368
Travel time at Voyager 1 speed 4,851,909 years

1 sibling around HD 47366

HD 47366 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
HD 47366 b this	Gas Giant	13.40	661.72	360.080	—	2016
HD 47366 c	Gas Giant	13.50	483.73	677.530	—	2016

HD 47366 b Planet Profile

Physical Specs

Radius

13.40 R⊕

Radius (Jupiter)

1.190 R♃

Mass

661.72 M⊕

Mass (Jupiter)

2.082 M♃

Density

1.51 g/cm³

Surface Gravity

3.69 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.368

HZ Position Unknown

Controversial No

Discovery

Year 2016

Method Radial Velocity

Facility Okayama Astrophysical Observatory

Telescope 1.88 m 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 47366 b	Jupiter
Radius (R⊕)	1.00	13.40	11.21
Mass (M⊕)	1.00	661.72	317.83
Density (g/cm³)	5.51	1.51	1.33
Surface Gravity (g)	1.00	3.69	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	661.719 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 47366

HIP

HIP 31674

TIC

TIC 443578538

Gaia DR2

Gaia DR2 2951804033248308480

Gaia DR3

Gaia DR3 2951804033248308480

System

HD 47366

Percentile among Gas Giant cohort

Radius 13.400 R⊕ · percentile 56 / cohort 1771

Mass 661.719 M⊕ · percentile 56 / cohort 1747

Orbital period 360.08 d · percentile 63 / cohort 1533

Distance 84.36 pc · percentile 31 / cohort 1759

ESI 0.368 · percentile 76 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

360.080 days

Semi-major axis

1.2070 AU

Eccentricity

0.071

Inclination

— °

Year Length

A year here lasts approximately 360.08 Earth days (98.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 1.2070 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.368

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Sato et al. 2016

Instrument

HIDES Echelle Spectrograph

Publication

2016-03

Observation locale

Ground

Host System: HD 47366

Spectral Class

K-type orange

Effective Temperature

4,866 K — cooler than the Sun (5,778 K)

Estimated Age

1.61 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

7.300 R☉

Stellar Mass

1.810 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

2.970 dex

Systemic radial velocity

9.12 km/s

Rotational v·sin i

4.30 km/s

Rotation period

86.00 days

Metallicity ratio

[Fe/H]

Distance

84.36 parsec

Light-years 275.13 ly

V-band magnitude

6.11 mag

Voyager-speed travel 4,851,909 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

11.826 mas

Total Proper Motion

126.102 mas/yr

PM Right Ascension

9.83 mas/yr

PM Declination

-125.72 mas/yr

Galactic Cartesian (pc)

x = -0.159 · y = 0.961 · z = -0.225

Equatorial (J2000)

RA 99.42002° · Dec -12.98566°

Galactic ℓ, b

223.036° · -8.887°

Ecliptic λ, β

101.373° · -36.054°

HTM-20 index

707769984

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

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

HD 33844 b

Gas Giant · K-type orange

Radius 13.40 R⊕ · 345.0 ly

Explore Related Categories

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