Confirmed Exoplanet Discovered 2016

HD 86950 b

A gas giant orbiting the k-type orange HD 86950, located approximately 684.4 light-years from Earth.

Key parameters at a glance

  • A radius of 13.00 Earth radii
  • A mass of 1,144.19 Earth masses
  • Surface gravity around 6.77 g
  • An orbital period of 1,270.000 days
  • Semi-major axis 2.7200 AU
  • Distance from Earth 684.40 light-years
  • Earth Similarity Index 0.411
  • Travel time at Voyager 1 speed 12,069,437 years

HD 86950 b Planet Profile

Physical Specs

Radius
13.00 R⊕
Radius (Jupiter)
1.160 R♃
Mass
1,144.19 M⊕
Mass (Jupiter)
3.600 M♃
Density
2.86 g/cm³
Surface Gravity
6.77 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.411
HZ Position Unknown
Controversial No

Discovery

Year 2016
Method Radial Velocity
Facility Multiple Observatories
Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#960of 1771

top 54.2%

This planet

13.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth HD 86950 b Jupiter
Radius (R⊕)1.0013.0011.21
Mass (M⊕)1.001,144.19317.83
Density (g/cm³)5.512.861.33
Surface Gravity (g)1.006.772.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 1,144.188 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD

HD 86950

HIP

HIP 49129

TIC

TIC 332711151

Gaia DR2

Gaia DR2 5673523262530712832

Gaia DR3

Gaia DR3 5673523262530712832

System

HD 86950

Percentile among Gas Giant cohort

Radius 13.000 R⊕ · percentile 43 / cohort 1771
Mass 1,144.188 M⊕ · percentile 70 / cohort 1747
Orbital period 1,270.00 d · percentile 80 / cohort 1533
Distance 209.84 pc · percentile 51 / cohort 1759
ESI 0.411 · percentile 88 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
1,270.000 days
Semi-major axis
2.7200 AU
Eccentricity
0.170
Inclination
°

Year Length

A year here lasts about 3.48 Earth years on a mildly elliptical path at a mean orbital distance of 2.7200 AU.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.411

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Wittenmyer et al. 2017

Instrument

Multiple Instruments

Publication

2017-02

Observation locale

Ground

Host System: HD 86950

Spectral Class

K-type orange

Effective Temperature

4,805 K — cooler than the Sun (5,778 K)

Estimated Age

Stellar Radius

8.800 R☉

Stellar Mass

1.660 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

2.660 dex

Systemic radial velocity

10.75 km/s

Metallicity ratio

[Fe/H]

Distance
209.84 parsec
Light-years 684.40 ly
V-band magnitude
7.47 mag
Voyager-speed travel 12,069,437 yr

Multi-band Host Photometry — 11 bands

4.98.58.55B7.47V7.18Gaia6.57TESS5.69J5.19H5.04K4.96W14.89W25.02W34.95W4

Astrometric Data

Parallax

4.737 mas

Total Proper Motion

14.206 mas/yr

PM Right Ascension

-9.44 mas/yr

PM Declination

-10.62 mas/yr

Galactic Cartesian (pc)

x = -0.830 · y = 0.471 · z = -0.298

Equatorial (J2000)

RA 150.40666° · Dec -17.33307°

Galactic ℓ, b

255.233° · 29.406°

Ecliptic λ, β

159.275° · -27.443°

HTM-20 index

1431874879

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