Key parameters at a glance

A radius of 14.30 Earth radii
A mass of 153.10 Earth masses
Surface gravity around 0.75 g
An orbital period of 649.918 days
Semi-major axis 1.4870 AU
Distance from Earth 137.65 light-years
Earth Similarity Index 0.250
Travel time at Voyager 1 speed 2,427,410 years

HD 210193 b Planet Profile

Physical Specs

Radius

14.30 R⊕

Radius (Jupiter)

1.270 R♃

Mass

153.10 M⊕

Mass (Jupiter)

0.482 M♃

Density

0.29 g/cm³

Surface Gravity

0.75 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.250

HZ Position Unknown

Controversial No

Discovery

Year 2019

Method Radial Velocity

Facility Las Campanas Observatory

Telescope 6.5 m Magellan II Clay Telescope

Size rank in cohort

Rank by radius

#301of 1771

top 16.9%

This planet

14.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HIP 65407 b 14.30 R⊕ HD 30669 b 14.30 R⊕ HD 45652 b 14.30 R⊕

Metric	Earth	HD 210193 b	Jupiter
Radius (R⊕)	1.00	14.30	11.21
Mass (M⊕)	1.00	153.10	317.83
Density (g/cm³)	5.51	0.29	1.33
Surface Gravity (g)	1.00	0.75	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	153.100 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 210193

HIP

HIP 109381

TIC

TIC 278523703

Gaia DR2

Gaia DR2 6570039342736534784

Gaia DR3

Gaia DR3 6570039342736534784

System

HD 210193

Percentile among Gas Giant cohort

Radius 14.300 R⊕ · percentile 82 / cohort 1771

Mass 153.100 M⊕ · percentile 12 / cohort 1747

Orbital period 649.92 d · percentile 71 / cohort 1533

Distance 42.20 pc · percentile 15 / cohort 1759

ESI 0.250 · percentile 45 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

649.918 days

Semi-major axis

1.4870 AU

Eccentricity

0.240

Inclination

— °

Year Length

A year here lasts about 1.78 Earth years on a mildly elliptical path at a mean orbital distance of 1.4870 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.250

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Feng et al. 2019

Instrument

Carnegie Planet Finder Spectrograph

Publication

2019-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at Las Campanas Observatory (12 shown).

HD 39855 b · Sub-Neptune HIP 54373 b · Sub-Neptune HD 103949 b · Sub-Neptune HD 24085 b · Sub-Neptune HIP 54373 c · Sub-Neptune HIP 35173 b · Sub-Neptune HD 211970 b · Sub-Neptune HD 64114 b · Neptune-like HIP 71135 b · Neptune-like HD 206255 b · Neptune-like HD 21411 b · Neptune-like HD 8326 b · Neptune-like

Host System: HD 210193

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,790 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.060 R☉

Stellar Mass

1.040 M☉

Metallicity [Fe/H]

0.13

Extended Stellar Properties

Surface gravity (log g)

4.435 dex

Stellar density

1.354 g/cm³

Systemic radial velocity

3.60 km/s

Rotational v·sin i

2.00 km/s

Activity index (log R'HK)

-4.860

Metallicity ratio

[M/H]

Distance

42.20 parsec

Light-years 137.65 ly

V-band magnitude

7.83 mag

Voyager-speed travel 2,427,410 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

23.666 mas

Total Proper Motion

175.049 mas/yr

PM Right Ascension

159.44 mas/yr

PM Declination

-72.27 mas/yr

Galactic Cartesian (pc)

x = 0.667 · y = -0.349 · z = -0.659

Equatorial (J2000)

RA 332.39513° · Dec -41.22521°

Galactic ℓ, b

359.227° · -54.074°

Ecliptic λ, β

318.873° · -27.776°

HTM-20 index

-980291024