Confirmed Exoplanet Discovered 2011

HD 96127 b

A gas giant orbiting the k-type orange HD 96127, located approximately 1,916.7 light-years from Earth.

Key parameters at a glance

  • A radius of 12.10 Earth radii
  • A mass of 6,661.72 Earth masses
  • Surface gravity around 45.50 g
  • An orbital period of 647.300 days
  • Semi-major axis 1.4200 AU
  • Distance from Earth 1,916.69 light-years
  • Earth Similarity Index 0.286
  • Travel time at Voyager 1 speed 33,800,740 years

HD 96127 b Planet Profile

Physical Specs

Radius
12.10 R⊕
Radius (Jupiter)
1.080 R♃
Mass
6,661.72 M⊕
Mass (Jupiter)
20.960 M♃
Density
20.70 g/cm³
Surface Gravity
45.50 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.286
HZ Position Unknown
Controversial No

Discovery

Year 2011
Method Radial Velocity
Facility McDonald Observatory
Telescope 9.2 m Hobby-Eberly Telescope

Size rank in cohort

Rank by radius

#1454of 1771

top 82.0%

This planet

12.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 62364 b 12.10 R⊕ HD 106515 A b 12.10 R⊕ BD+20 2457 b 12.10 R⊕
Metric Earth HD 96127 b Jupiter
Radius (R⊕)1.0012.1011.21
Mass (M⊕)1.006,661.72317.83
Density (g/cm³)5.5120.701.33
Surface Gravity (g)1.0045.502.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 6,661.717 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD

HD 96127

HIP

HIP 54232

TIC

TIC 252803484

Gaia DR2

Gaia DR2 781999921242524160

Gaia DR3

Gaia DR3 781999921242524160

System

HD 96127

Percentile among Gas Giant cohort

Radius 12.100 R⊕ · percentile 16 / cohort 1771
Mass 6,661.717 M⊕ · percentile 97 / cohort 1747
Orbital period 647.30 d · percentile 71 / cohort 1533
Distance 587.66 pc · percentile 78 / cohort 1759
ESI 0.286 · percentile 54 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
647.300 days
Semi-major axis
1.4200 AU
Eccentricity
0.300
Inclination
— °

Year Length

A year here lasts about 1.77 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.4200 AU.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.286

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Gettel et al. 2012

Instrument

High Resolution Spectrograph

Publication

2012-01

Observation locale

Ground

Discovery cohort

Planets confirmed in 2011 at McDonald Observatory (4 shown).

HD 220773 b · Gas Giant HD 79498 b · Gas Giant HD 240237 b · Gas Giant BD+48 738 b · Gas Giant

Host System: HD 96127

Spectral Class

K-type orange

Effective Temperature

3,943 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

51.100 R☉

Stellar Mass

10.940 M☉

Metallicity [Fe/H]

-0.24

Extended Stellar Properties

Surface gravity (log g)

2.060 dex

Systemic radial velocity

-37.45 km/s

Metallicity ratio

[Fe/H]

Distance
587.66 parsec
Light-years 1,916.69 ly
V-band magnitude
7.41 mag
Voyager-speed travel 33,800,740 yr

Multi-band Host Photometry — 11 bands

3.88.98.92B7.41V6.88Gaia6.08TESS4.89J4.12H3.91K3.85W13.82W23.87W33.76W4

Astrometric Data

Parallax

1.674 mas

Total Proper Motion

8.265 mas/yr

PM Right Ascension

8.02 mas/yr

PM Declination

-1.98 mas/yr

Galactic Cartesian (pc)

x = -0.696 · y = 0.168 · z = 0.698

Equatorial (J2000)

RA 166.44150° · Dec 44.30155°

Galactic ℓ, b

166.966° · 62.736°

Ecliptic λ, β

148.173° · 35.034°

HTM-20 index

866499925

Similar Worlds

HD 184010 b

Gas Giant · K-type orange

Radius 12.10 R⊕ · 198.3 ly

tau Gem b

Gas Giant · K-type orange

Radius 12.10 R⊕ · 367.0 ly

KIC 3526061 b

Gas Giant · K-type orange

Radius 12.10 R⊕ · 1,308.6 ly

HIP 948 b

Gas Giant · K-type orange

Radius 12.10 R⊕ · 113.7 ly

HD 109988 b

Gas Giant · K-type orange

Radius 12.10 R⊕ · 138.7 ly

BD+20 2457 b

Gas Giant · K-type orange

Radius 12.10 R⊕ · 5,021.9 ly

Explore Related Categories

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