Key parameters at a glance

A radius of 12.40 Earth radii
A mass of 3,378.53 Earth masses
Surface gravity around 21.97 g
An orbital period of 482.000 days
Semi-major axis 1.2800 AU
Distance from Earth 2,206.70 light-years
Earth Similarity Index 0.374
Travel time at Voyager 1 speed 38,915,205 years

HD 95127 b Planet Profile

Physical Specs

Radius

12.40 R⊕

Radius (Jupiter)

1.110 R♃

Mass

3,378.53 M⊕

Mass (Jupiter)

10.630 M♃

Density

9.74 g/cm³

Surface Gravity

21.97 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.374

HZ Position Unknown

Controversial No

Discovery

Year 2015

Method Radial Velocity

Facility McDonald Observatory

Telescope 9.2 m Hobby-Eberly Telescope

Size rank in cohort

Rank by radius

#1298of 1771

top 73.2%

This planet

12.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 110014 b 12.40 R⊕ CFBDSIR J145829+101343 b 12.40 R⊕ MOA-2010-BLG-073L b 12.40 R⊕

Metric	Earth	HD 95127 b	Jupiter
Radius (R⊕)	1.00	12.40	11.21
Mass (M⊕)	1.00	3,378.53	317.83
Density (g/cm³)	5.51	9.74	1.33
Surface Gravity (g)	1.00	21.97	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	3,378.533 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 95127

HIP

HIP 53733

TIC

TIC 252794572

Gaia DR2

Gaia DR2 781641961487762816

Gaia DR3

Gaia DR3 781641961487762816

System

HD 95127

Percentile among Gas Giant cohort

Radius 12.400 R⊕ · percentile 25 / cohort 1771

Mass 3,378.533 M⊕ · percentile 89 / cohort 1747

Orbital period 482.00 d · percentile 67 / cohort 1533

Distance 676.58 pc · percentile 81 / cohort 1759

ESI 0.374 · percentile 77 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

482.000 days

Semi-major axis

1.2800 AU

Eccentricity

0.110

Inclination

— °

Year Length

A year here lasts about 1.32 Earth years on a mildly elliptical path at a mean orbital distance of 1.2800 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.374

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Niedzielski et al. 2015

Instrument

High Resolution Spectrograph

Publication

2015-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2015 at McDonald Observatory (3 shown).

BD+49 828 b · Gas Giant psi1 Dra B b · Gas Giant HD 216536 b · Gas Giant

Host System: HD 95127

Spectral Class

K-type orange

Effective Temperature

4,218 K — cooler than the Sun (5,778 K)

Estimated Age

5.50 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

41.010 R☉

Stellar Mass

3.700 M☉

Metallicity [Fe/H]

-0.18

Extended Stellar Properties

Surface gravity (log g)

1.780 dex

Systemic radial velocity

-16.30 km/s

Rotational v·sin i

2.60 km/s

Metallicity ratio

[Fe/H]

Distance

676.58 parsec

Light-years 2,206.70 ly

V-band magnitude

8.15 mag

Voyager-speed travel 38,915,205 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.450 mas

Total Proper Motion

18.849 mas/yr

PM Right Ascension

-14.10 mas/yr

PM Declination

-12.50 mas/yr

Galactic Cartesian (pc)

x = -0.697 · y = 0.188 · z = 0.692

Equatorial (J2000)

RA 164.89612° · Dec 43.81441°

Galactic ℓ, b

169.038° · 61.996°

Ecliptic λ, β

147.258° · 34.084°

HTM-20 index

86784512

Similar Worlds

HD 87816 c

Gas Giant · K-type orange

Radius 12.40 R⊕ · 434.5 ly

HD 16905 b

Gas Giant · K-type orange

Radius 12.40 R⊕ · 129.6 ly

Gaia-4 b

Gas Giant · K-type orange

Radius 12.40 R⊕ · 239.7 ly

HD 110014 b

Gas Giant · K-type orange

Radius 12.40 R⊕ · 328.6 ly

TYC 4282-00605-1 b

Gas Giant · K-type orange

Radius 12.40 R⊕ · 1,513.8 ly

WISPIT 1 b

Gas Giant · K-type orange

Radius 12.40 R⊕ · 750.2 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries McDonald Observatory Mission K-type orange Hosts