Key parameters at a glance

A radius of 13.20 Earth radii
A mass of 947.13 Earth masses
Surface gravity around 5.44 g
An orbital period of 58.830 days
Semi-major axis 0.2970 AU
Distance from Earth 157.65 light-years
Earth Similarity Index 0.395
Travel time at Voyager 1 speed 2,780,211 years

HD 12484 b Planet Profile

Physical Specs

Radius

13.20 R⊕

Radius (Jupiter)

1.170 R♃

Mass

947.13 M⊕

Mass (Jupiter)

2.980 M♃

Density

2.26 g/cm³

Surface Gravity

5.44 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.395

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

#847of 1771

top 47.8%

This planet

13.20R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 c 13.20 R⊕ HD 37605 b 13.20 R⊕ MOA-2009-BLG-387L b 13.20 R⊕

Metric	Earth	HD 12484 b	Jupiter
Radius (R⊕)	1.00	13.20	11.21
Mass (M⊕)	1.00	947.13	317.83
Density (g/cm³)	5.51	2.26	1.33
Surface Gravity (g)	1.00	5.44	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	947.133 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 12484

HIP

HIP 9519

TIC

TIC 419940916

Gaia DR2

Gaia DR2 2517585927699042944

Gaia DR3

Gaia DR3 2517585931994600448

System

HD 12484

Percentile among Gas Giant cohort

Radius 13.200 R⊕ · percentile 49 / cohort 1771

Mass 947.133 M⊕ · percentile 65 / cohort 1747

Orbital period 58.83 d · percentile 51 / cohort 1533

Distance 48.34 pc · percentile 19 / cohort 1759

ESI 0.395 · percentile 84 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

58.830 days

Semi-major axis

0.2970 AU

Eccentricity

0.070

Inclination

— °

Year Length

A year here lasts approximately 58.83 Earth days (16.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2970 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.395

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

H Eacute Brard et al. 2016

Instrument

SOPHIE Spectrograph

Publication

2016-04

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 191806 b · Gas Giant HIP 109600 b · Gas Giant HD 221585 b · Gas Giant HIP 109384 b · Gas Giant HD 143105 b · Gas Giant HD 214823 b · Gas Giant HIP 65407 c · Gas Giant HIP 65407 b · Gas Giant

Host System: HD 12484

Spectral Class

F-type yellow-white

Effective Temperature

5,920 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.002 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.650 dex

Stellar density

1.469 g/cm³

Systemic radial velocity

4.96 km/s

Rotational v·sin i

8.20 km/s

Metallicity ratio

[Fe/H]

Distance

48.34 parsec

Light-years 157.65 ly

V-band magnitude

8.18 mag

Voyager-speed travel 2,780,211 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

20.660 mas

Total Proper Motion

37.941 mas/yr

PM Right Ascension

36.37 mas/yr

PM Declination

-10.81 mas/yr

Galactic Cartesian (pc)

x = 0.860 · y = 0.509 · z = 0.049

Equatorial (J2000)

RA 30.61153° · Dec 2.81581°

Galactic ℓ, b

155.462° · -55.506°

Ecliptic λ, β

29.488° · -9.047°

HTM-20 index

-424993026