Key parameters at a glance

A radius of 14.00 Earth radii
A mass of 238.37 Earth masses
Surface gravity around 1.22 g
An orbital period of 352.650 days
Semi-major axis 1.0400 AU
Distance from Earth 188.52 light-years
Earth Similarity Index 0.284
Travel time at Voyager 1 speed 3,324,489 years

HD 155193 b Planet Profile

Physical Specs

Radius

14.00 R⊕

Radius (Jupiter)

1.250 R♃

Mass

238.37 M⊕

Mass (Jupiter)

0.750 M♃

Density

0.48 g/cm³

Surface Gravity

1.22 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.284

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Radial Velocity

Facility Haute-Provence Observatory

Telescope 1.93 m Telescope

Size rank in cohort

Rank by radius

#415of 1771

top 23.4%

This planet

14.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 9446 b 14.00 R⊕ HD 156411 b 14.00 R⊕ HD 224693 b 14.00 R⊕

Metric	Earth	HD 155193 b	Jupiter
Radius (R⊕)	1.00	14.00	11.21
Mass (M⊕)	1.00	238.37	317.83
Density (g/cm³)	5.51	0.48	1.33
Surface Gravity (g)	1.00	1.22	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	238.371 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 155193

TIC

TIC 447842929

Gaia DR2

Gaia DR2 4443815297524544000

Gaia DR3

Gaia DR3 4443815297524544000

System

HD 155193

Percentile among Gas Giant cohort

Radius 14.000 R⊕ · percentile 74 / cohort 1771

Mass 238.371 M⊕ · percentile 25 / cohort 1747

Orbital period 352.65 d · percentile 62 / cohort 1533

Distance 57.80 pc · percentile 24 / cohort 1759

ESI 0.284 · percentile 53 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

352.650 days

Semi-major axis

1.0400 AU

Eccentricity

0.210

Inclination

0.71 °

Year Length

A year here lasts approximately 352.65 Earth days (96.6% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 1.0400 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.284

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Dalal et al. 2021

Instrument

SOPHIE Spectrograph

Publication

2021-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Haute-Provence Observatory (11 shown).

HD 27969 b · Gas Giant HD 109286 b · Gas Giant HD 211403 b · Gas Giant HD 80869 b · Gas Giant BD+63 1405 b · Gas Giant HD 331093 b · Gas Giant BD+45 564 b · Gas Giant HD 95544 b · Gas Giant HD 115954 b · Gas Giant HD 124330 b · Gas Giant BD+55 362 b · Gas Giant

Host System: HD 155193

Spectral Class

F-type yellow-white

Effective Temperature

6,239 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.764 R☉

Stellar Mass

1.221 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.260 dex

Stellar density

0.316 g/cm³

Systemic radial velocity

3.88 km/s

Rotational v·sin i

3.60 km/s

Metallicity ratio

[Fe/H]

Distance

57.80 parsec

Light-years 188.52 ly

V-band magnitude

7.01 mag

Voyager-speed travel 3,324,489 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

17.272 mas

Total Proper Motion

151.831 mas/yr

PM Right Ascension

-67.49 mas/yr

PM Declination

-136.00 mas/yr

Galactic Cartesian (pc)

x = -0.214 · y = -0.961 · z = 0.174

Equatorial (J2000)

RA 257.42089° · Dec 10.03810°

Galactic ℓ, b

30.502° · 27.124°

Ecliptic λ, β

255.209° · 32.834°

HTM-20 index

979446124