Confirmed Exoplanet Discovered 2015

HD 67087 c

A gas giant orbiting the f-type yellow-white HD 67087, located approximately 249.6 light-years from Earth.

Key parameters at a glance

  • A radius of 12.90 Earth radii
  • A mass of 1,540.00 Earth masses
  • Surface gravity around 9.25 g
  • An orbital period of 2,374.000 days
  • Semi-major axis 3.8600 AU
  • Distance from Earth 249.58 light-years
  • Earth Similarity Index 0.428
  • Travel time at Voyager 1 speed 4,401,345 years

1 sibling around HD 67087

HD 67087 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet Type Radius (R⊕) Mass (M⊕) Period (d) Eq. T (K) Year
HD 67087 b Gas Giant 13.10 973.00 352.200 2015
HD 67087 c this Gas Giant 12.90 1,540.00 2,374.000 2015

HD 67087 c Planet Profile

Physical Specs

Radius
12.90 R⊕
Radius (Jupiter)
1.150 R♃
Mass
1,540.00 M⊕
Mass (Jupiter)
4.850 M♃
Density
3.94 g/cm³
Surface Gravity
9.25 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.428
HZ Position Unknown
Controversial No

Discovery

Year 2015
Method Radial Velocity
Facility Multiple Observatories
Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1011of 1771

top 57.0%

This planet

12.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth HD 67087 c Jupiter
Radius (R⊕)1.0012.9011.21
Mass (M⊕)1.001,540.00317.83
Density (g/cm³)5.513.941.33
Surface Gravity (g)1.009.252.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 1,540.000 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD

HD 67087

HIP

HIP 39767

TIC

TIC 165796397

Gaia DR2

Gaia DR2 877846136542812160

Gaia DR3

Gaia DR3 877846136542812160

System

HD 67087

Percentile among Gas Giant cohort

Radius 12.900 R⊕ · percentile 41 / cohort 1771
Mass 1,540.000 M⊕ · percentile 74 / cohort 1747
Orbital period 2,374.00 d · percentile 86 / cohort 1533
Distance 76.52 pc · percentile 30 / cohort 1759
ESI 0.428 · percentile 94 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
2,374.000 days
Semi-major axis
3.8600 AU
Eccentricity
0.760
Inclination
°

Year Length

A year here lasts about 6.50 Earth years on a highly eccentric trajectory at a mean orbital distance of 3.8600 AU.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.428

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Harakawa et al. 2015

Instrument

Multiple Instruments

Publication

2015-06

Observation locale

Ground

Host System: HD 67087

Spectral Class

F-type yellow-white

Effective Temperature

6,330 K — hotter than the Sun (5,778 K)

Estimated Age

1.45 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.550 R☉

Stellar Mass

1.360 M☉

Metallicity [Fe/H]

0.25

Extended Stellar Properties

Surface gravity (log g)

4.190 dex

Stellar density

0.632 g/cm³

Systemic radial velocity

0.62 km/s

Rotational v·sin i

9.70 km/s

Metallicity ratio

[Fe/H]

Distance
76.52 parsec
Light-years 249.58 ly
V-band magnitude
8.05 mag
Voyager-speed travel 4,401,345 yr

Multi-band Host Photometry — 11 bands

6.78.68.60B8.05V7.92Gaia7.58TESS7.10J6.91H6.87K6.80W16.84W26.88W36.69W4

Astrometric Data

Parallax

13.040 mas

Total Proper Motion

41.148 mas/yr

PM Right Ascension

-16.51 mas/yr

PM Declination

-37.69 mas/yr

Galactic Cartesian (pc)

x = -0.451 · y = 0.723 · z = 0.523

Equatorial (J2000)

RA 121.91557° · Dec 31.55116°

Galactic ℓ, b

190.118° · 29.092°

Ecliptic λ, β

117.325° · 11.090°

HTM-20 index

1248697000

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