Key parameters at a glance

A radius of 13.30 Earth radii
A mass of 762.80 Earth masses
Surface gravity around 4.31 g
An orbital period of 357.800 days
Semi-major axis 1.1000 AU
Distance from Earth 106.35 light-years
Earth Similarity Index 0.379
Travel time at Voyager 1 speed 1,875,540 years

mu Leo b Planet Profile

Physical Specs

Radius

13.30 R⊕

Radius (Jupiter)

1.180 R♃

Mass

762.80 M⊕

Mass (Jupiter)

2.400 M♃

Density

1.78 g/cm³

Surface Gravity

4.31 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.379

HZ Position Unknown

Controversial No

Discovery

Year 2014

Method Radial Velocity

Facility Bohyunsan Optical Astronomical Observatory

Telescope 1.8 m Telescope

Size rank in cohort

Rank by radius

#793of 1771

top 44.7%

This planet

13.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 b 13.30 R⊕ HD 129445 b 13.30 R⊕ GJ 876 b 13.30 R⊕

Metric	Earth	mu Leo b	Jupiter
Radius (R⊕)	1.00	13.30	11.21
Mass (M⊕)	1.00	762.80	317.83
Density (g/cm³)	5.51	1.78	1.33
Surface Gravity (g)	1.00	4.31	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	762.800 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 85503

HIP

HIP 48455

TIC

TIC 82204610

Gaia DR2

Gaia DR2 643819484616249984

Gaia DR3

Gaia DR3 643819484617141504

System

mu Leo

Percentile among Gas Giant cohort

Radius 13.300 R⊕ · percentile 53 / cohort 1771

Mass 762.800 M⊕ · percentile 60 / cohort 1747

Orbital period 357.80 d · percentile 62 / cohort 1533

Distance 32.61 pc · percentile 9 / cohort 1759

ESI 0.379 · percentile 79 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

357.800 days

Semi-major axis

1.1000 AU

Eccentricity

0.090

Inclination

— °

Year Length

A year here lasts approximately 357.80 Earth days (98.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 1.1000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.379

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Lee et al. 2014

Instrument

BOES Echelle Spectrograph

Publication

2014-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2014 at Bohyunsan Optical Astronomical Observatory (2 shown).

bet UMi b · Gas Giant bet Cnc b · Gas Giant

Host System: mu Leo

Spectral Class

K-type orange

Effective Temperature

4,538 K — cooler than the Sun (5,778 K)

Estimated Age

3.35 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

11.400 R☉

Stellar Mass

1.500 M☉

Metallicity [Fe/H]

0.36

Extended Stellar Properties

Surface gravity (log g)

2.400 dex

Systemic radial velocity

13.60 km/s

Rotational v·sin i

2.40 km/s

Metallicity ratio

[Fe/H]

Distance

32.61 parsec

Light-years 106.35 ly

V-band magnitude

3.87 mag

Voyager-speed travel 1,875,540 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

30.649 mas

Total Proper Motion

222.606 mas/yr

PM Right Ascension

-215.75 mas/yr

PM Declination

-54.84 mas/yr

Galactic Cartesian (pc)

x = -0.764 · y = 0.474 · z = 0.438

Equatorial (J2000)

RA 148.18987° · Dec 26.00671°

Galactic ℓ, b

204.045° · 50.245°

Ecliptic λ, β

141.425° · 12.348°

HTM-20 index

-1774117888

Similar Worlds

TOI-4010 e

Gas Giant · K-type orange

Radius 13.30 R⊕ · 578.9 ly

HD 94890 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 201.2 ly

NGC 2682 Sand 978 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 2,680.7 ly

HD 12661 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 123.4 ly

HD 108863 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 537.3 ly

Kepler-432 c

Gas Giant · K-type orange

Radius 13.30 R⊕ · 2,765.9 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Bohyunsan Optical Astronomical Observatory Mission K-type orange Hosts