Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 251.00 Earth masses
Surface gravity around 1.30 g
An orbital period of 1,035.700 days
Semi-major axis 2.0700 AU
Distance from Earth 108.27 light-years
Earth Similarity Index 0.290
Travel time at Voyager 1 speed 1,909,262 years

HD 197037 b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

251.00 M⊕

Mass (Jupiter)

0.790 M♃

Density

0.51 g/cm³

Surface Gravity

1.30 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.290

HZ Position Unknown

Controversial No

Discovery

Year 2012

Method Radial Velocity

Facility McDonald Observatory

Telescope 2.7 m Harlan J. Smith Telescope

Size rank in cohort

Rank by radius

#456of 1771

top 25.7%

This planet

13.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

24 Sex c 13.90 R⊕ HD 148156 b 13.90 R⊕ HD 134987 c 13.90 R⊕

Metric	Earth	HD 197037 b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	251.00	317.83
Density (g/cm³)	5.51	0.51	1.33
Surface Gravity (g)	1.00	1.30	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	251.000 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 197037

HIP

HIP 101948

TIC

TIC 195382102

Gaia DR2

Gaia DR2 2066437688140905600

Gaia DR3

Gaia DR3 2066437688140905600

System

HD 197037

Percentile among Gas Giant cohort

Radius 13.900 R⊕ · percentile 72 / cohort 1771

Mass 251.000 M⊕ · percentile 27 / cohort 1747

Orbital period 1,035.70 d · percentile 78 / cohort 1533

Distance 33.19 pc · percentile 9 / cohort 1759

ESI 0.290 · percentile 55 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,035.700 days

Semi-major axis

2.0700 AU

Eccentricity

0.220

Inclination

— °

Year Length

A year here lasts about 2.84 Earth years on a mildly elliptical path at a mean orbital distance of 2.0700 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.290

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Robertson et al. 2012

Instrument

Tull Coude Spectrograph

Publication

2012-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2012 at McDonald Observatory (2 shown).

BD+20 274 b · Gas Giant HD 219415 b · Gas Giant

Host System: HD 197037

Spectral Class

F-type yellow-white

Effective Temperature

6,150 K — hotter than the Sun (5,778 K)

Estimated Age

1.90 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.105 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

-0.20

Extended Stellar Properties

Surface gravity (log g)

4.400 dex

Stellar density

1.039 g/cm³

Systemic radial velocity

9.09 km/s

Rotational v·sin i

4.00 km/s

Metallicity ratio

[Fe/H]

Distance

33.19 parsec

Light-years 108.27 ly

V-band magnitude

6.82 mag

Voyager-speed travel 1,909,262 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

30.097 mas

Total Proper Motion

230.603 mas/yr

PM Right Ascension

-62.90 mas/yr

PM Declination

-221.86 mas/yr

Galactic Cartesian (pc)

x = 0.475 · y = -0.568 · z = 0.672

Equatorial (J2000)

RA 309.88697° · Dec 42.24759°

Galactic ℓ, b

81.676° · 0.412°

Ecliptic λ, β

331.875° · 57.436°

HTM-20 index

-137855606