Key parameters at a glance

A radius of 14.10 Earth radii
A mass of 203.41 Earth masses
Surface gravity around 1.02 g
An orbital period of 2,412.000 days
Semi-major axis 3.3800 AU
Distance from Earth 180.17 light-years
Earth Similarity Index 0.272
Travel time at Voyager 1 speed 3,177,336 years

HD 105779 b Planet Profile

Physical Specs

Radius

14.10 R⊕

Radius (Jupiter)

1.260 R♃

Mass

203.41 M⊕

Mass (Jupiter)

0.640 M♃

Density

0.40 g/cm³

Surface Gravity

1.02 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.272

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#371of 1771

top 20.9%

This planet

14.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 27894 b 14.10 R⊕ HD 103720 b 14.10 R⊕ HD 216770 b 14.10 R⊕

Metric	Earth	HD 105779 b	Jupiter
Radius (R⊕)	1.00	14.10	11.21
Mass (M⊕)	1.00	203.41	317.83
Density (g/cm³)	5.51	0.40	1.33
Surface Gravity (g)	1.00	1.02	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	203.410 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 105779

TIC

TIC 347713631

Gaia DR2

Gaia DR2 3567602184853029760

Gaia DR3

Gaia DR3 3567602184853029760

System

HD 105779

Percentile among Gas Giant cohort

Radius 14.100 R⊕ · percentile 77 / cohort 1771

Mass 203.410 M⊕ · percentile 20 / cohort 1747

Orbital period 2,412.00 d · percentile 86 / cohort 1533

Distance 55.24 pc · percentile 23 / cohort 1759

ESI 0.272 · percentile 50 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2,412.000 days

Semi-major axis

3.3800 AU

Eccentricity

0.000

Inclination

— °

Year Length

A year here lasts about 6.60 Earth years on a nearly circular orbit at a mean orbital distance of 3.3800 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.272

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Sreenivas et al. 2022

Instrument

HARPS Spectrograph

Publication

2022-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2022 at La Silla Observatory (12 shown).

TOI-500 c · Sub-Neptune pi Men d · Sub-Neptune TOI-500 e · Sub-Neptune CoRoT-7 d · Neptune-like TOI-500 d · Neptune-like HD 69123 b · Gas Giant HD 103891 b · Gas Giant HD 114082 b · Gas Giant HD 64121 b · Gas Giant HD 22532 b · Gas Giant HD 29399 b · Gas Giant iot Dra c · Gas Giant

Host System: HD 105779

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,792 K — hotter than the Sun (5,778 K)

Estimated Age

7.54 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.940 R☉

Stellar Mass

0.890 M☉

Metallicity [Fe/H]

-0.25

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

1.718 g/cm³

Rotational v·sin i

2.00 km/s

Activity index (log R'HK)

-4.940

Metallicity ratio

[Fe/H]

Distance

55.24 parsec

Light-years 180.17 ly

V-band magnitude

8.65 mag

Voyager-speed travel 3,177,336 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

18.074 mas

Total Proper Motion

240.332 mas/yr

PM Right Ascension

-235.79 mas/yr

PM Declination

-46.51 mas/yr

Galactic Cartesian (pc)

x = -0.955 · y = -0.044 · z = -0.292

Equatorial (J2000)

RA 182.66121° · Dec -16.95649°

Galactic ℓ, b

289.119° · 44.818°

Ecliptic λ, β

189.313° · -14.472°

HTM-20 index

1350717326