Key parameters at a glance

A radius of 4.41 Earth radii
A mass of 17.80 Earth masses
Surface gravity around 0.92 g
An orbital period of 45.791 days
Semi-major axis 0.2460 AU
Distance from Earth 102.82 light-years
Earth Similarity Index 0.514
Travel time at Voyager 1 speed 1,813,312 years

HD 64114 b Planet Profile

Physical Specs

Radius

4.41 R⊕

Radius (Jupiter)

0.393 R♃

Mass

17.80 M⊕

Mass (Jupiter)

0.056 M♃

Density

1.14 g/cm³

Surface Gravity

0.92 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.514

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

#475of 574

top 82.6%

This planet

4.41R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

KMT-2023-BLG-0830L b 4.41 R⊕ OGLE-2018-BLG-1126L b 4.41 R⊕ Kepler-550 b 4.42 R⊕

Metric	Earth	HD 64114 b	Jupiter
Radius (R⊕)	1.00	4.41	11.21
Mass (M⊕)	1.00	17.80	317.83
Density (g/cm³)	5.51	1.14	1.33
Surface Gravity (g)	1.00	0.92	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	17.800 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 64114

HIP

HIP 38392

TIC

TIC 36021583

Gaia DR2

Gaia DR2 3037245604373149824

Gaia DR3

Gaia DR3 3037245604373149824

System

HD 64114

Percentile among Neptune-like cohort

Radius 4.410 R⊕ · percentile 17 / cohort 574

Mass 17.800 M⊕ · percentile 21 / cohort 574

Orbital period 45.79 d · percentile 69 / cohort 524

Distance 31.53 pc · percentile 10 / cohort 572

ESI 0.514 · percentile 93 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

45.791 days

Semi-major axis

0.2460 AU

Eccentricity

0.120

Inclination

— °

Year Length

A year here lasts approximately 45.79 Earth days (12.5% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.2460 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.514

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 HIP 71135 b · Neptune-like HD 206255 b · Neptune-like HD 21411 b · Neptune-like HD 8326 b · Neptune-like HD 102843 b · Gas Giant

Host System: HD 64114

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,676 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.883 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

—

Extended Stellar Properties

Surface gravity (log g)

4.518 dex

Stellar density

1.867 g/cm³

Systemic radial velocity

52.79 km/s

Rotational v·sin i

2.00 km/s

Distance

31.53 parsec

Light-years 102.82 ly

V-band magnitude

7.71 mag

Voyager-speed travel 1,813,312 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

31.691 mas

Total Proper Motion

186.867 mas/yr

PM Right Ascension

-69.45 mas/yr

PM Declination

-173.48 mas/yr

Galactic Cartesian (pc)

x = -0.461 · y = 0.867 · z = -0.191

Equatorial (J2000)

RA 117.98256° · Dec -11.03372°

Galactic ℓ, b

229.789° · 8.084°

Ecliptic λ, β

122.632° · -31.357°

HTM-20 index

-424149414