Key parameters at a glance

A radius of 13.50 Earth radii
A mass of 561.92 Earth masses
Surface gravity around 3.08 g
An orbital period of 858.000 days
Semi-major axis 1.8800 AU
Distance from Earth 412.06 light-years
Earth Similarity Index 0.355
Travel time at Voyager 1 speed 7,266,717 years

HD 72490 b Planet Profile

Physical Specs

Radius

13.50 R⊕

Radius (Jupiter)

1.200 R♃

Mass

561.92 M⊕

Mass (Jupiter)

1.768 M♃

Density

1.26 g/cm³

Surface Gravity

3.08 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.355

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I Telescope

Size rank in cohort

Rank by radius

#671of 1771

top 37.8%

This planet

13.50R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 45350 b 13.50 R⊕ HD 82943 b 13.50 R⊕ HD 27442 b 13.50 R⊕

Metric	Earth	HD 72490 b	Jupiter
Radius (R⊕)	1.00	13.50	11.21
Mass (M⊕)	1.00	561.92	317.83
Density (g/cm³)	5.51	1.26	1.33
Surface Gravity (g)	1.00	3.08	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	561.923 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 72490

HIP

HIP 41997

TIC

TIC 20537900

Gaia DR2

Gaia DR2 603329694046441472

Gaia DR3

Gaia DR3 603329694046441472

System

HD 72490

Percentile among Gas Giant cohort

Radius 13.500 R⊕ · percentile 59 / cohort 1771

Mass 561.923 M⊕ · percentile 51 / cohort 1747

Orbital period 858.00 d · percentile 75 / cohort 1533

Distance 126.34 pc · percentile 40 / cohort 1759

ESI 0.355 · percentile 72 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

858.000 days

Semi-major axis

1.8800 AU

Eccentricity

0.124

Inclination

— °

Year Length

A year here lasts about 2.35 Earth years on a mildly elliptical path at a mean orbital distance of 1.8800 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.355

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Luhn et al. 2019

Instrument

HIRES Spectrometer

Publication

2019-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at W. M. Keck Observatory (12 shown).

HD 75784 c · Gas Giant HD 99706 c · Gas Giant HD 148164 c · Gas Giant HD 55696 b · Gas Giant HD 95089 c · Gas Giant HD 13167 b · Gas Giant HD 18015 b · Gas Giant HAT-P-11 c · Gas Giant HD 156279 c · Gas Giant HD 98736 b · Gas Giant HD 180053 b · Gas Giant HD 114783 c · Gas Giant

Host System: HD 72490

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

4,934 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

4.960 R☉

Stellar Mass

1.210 M☉

Metallicity [Fe/H]

-0.13

Extended Stellar Properties

Surface gravity (log g)

3.210 dex

Systemic radial velocity

31.82 km/s

Metallicity ratio

[M/H]

Distance

126.34 parsec

Light-years 412.06 ly

V-band magnitude

7.82 mag

Voyager-speed travel 7,266,717 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

7.887 mas

Total Proper Motion

30.040 mas/yr

PM Right Ascension

25.24 mas/yr

PM Declination

-16.29 mas/yr

Galactic Cartesian (pc)

x = -0.604 · y = 0.762 · z = 0.234

Equatorial (J2000)

RA 128.40283° · Dec 13.55072°

Galactic ℓ, b

211.796° · 28.680°

Ecliptic λ, β

127.315° · -5.053°

HTM-20 index

1053181712