Confirmed Exoplanet Discovered 2009

HD 175167 b

A gas giant orbiting the g-type yellow (sun-like) HD 175167, located approximately 231.9 light-years from Earth.

Key parameters at a glance

  • A radius of 12.30 Earth radii
  • A mass of 4,703.86 Earth masses
  • Surface gravity around 31.09 g
  • An orbital period of 1,175.000 days
  • Semi-major axis 2.4000 AU
  • Distance from Earth 231.85 light-years
  • Earth Similarity Index 0.331
  • Travel time at Voyager 1 speed 4,088,714 years

HD 175167 b Planet Profile

Physical Specs

Radius
12.30 R⊕
Radius (Jupiter)
1.090 R♃
Mass
4,703.86 M⊕
Mass (Jupiter)
14.800 M♃
Density
13.90 g/cm³
Surface Gravity
31.09 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.331
HZ Position Unknown
Controversial No

Discovery

Year 2009
Method Radial Velocity
Facility Las Campanas Observatory
Telescope 6.5 m Magellan II Clay Telescope

Size rank in cohort

Rank by radius

#1349of 1771

top 76.1%

This planet

12.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth HD 175167 b Jupiter
Radius (R⊕)1.0012.3011.21
Mass (M⊕)1.004,703.86317.83
Density (g/cm³)5.5113.901.33
Surface Gravity (g)1.0031.092.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 4,703.860 M⊕ Direct mass measurement (not derived).
Minimum mass (M sin i) 2,574.410 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD

HD 175167

HIP

HIP 93281

TIC

TIC 467966544

Gaia DR2

Gaia DR2 6421118739093252224

Gaia DR3

Gaia DR3 6421118739093252224

System

HD 175167

Percentile among Gas Giant cohort

Radius 12.300 R⊕ · percentile 22 / cohort 1771
Mass 4,703.860 M⊕ · percentile 93 / cohort 1747
Orbital period 1,175.00 d · percentile 79 / cohort 1533
Distance 71.09 pc · percentile 28 / cohort 1759
ESI 0.331 · percentile 65 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
1,175.000 days
Semi-major axis
2.4000 AU
Eccentricity
0.510
Inclination
60.00 °

Year Length

A year here lasts about 3.22 Earth years on a highly eccentric trajectory at a mean orbital distance of 2.4000 AU.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.331

0 = alien, 1 = Earth-identical

Detection Signatures

Radial velocity

Stellar wobble has been measured spectroscopically.

Astrometry

Positional wobble of the host star was measured.

Discovery Paper

Primary reference

Arriagada et al. 2010

Instrument

MIKE Spectrograph

Publication

2010-03

Observation locale

Ground

Discovery cohort

Planets confirmed in 2009 at Las Campanas Observatory (4 shown).

Host System: HD 175167

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,635 K — cooler than the Sun (5,778 K)

Estimated Age

Stellar Radius

1.750 R☉

Stellar Mass

1.090 M☉

Metallicity [Fe/H]

0.28

Extended Stellar Properties

Surface gravity (log g)

4.090 dex

Stellar density

0.258 g/cm³

Systemic radial velocity

4.81 km/s

Metallicity ratio

[Fe/H]

Distance
71.09 parsec
Light-years 231.85 ly
V-band magnitude
8.01 mag
Voyager-speed travel 4,088,714 yr

Multi-band Host Photometry — 11 bands

6.28.78.73B8.01V7.82Gaia7.35TESS6.71J6.38H6.29K6.31W16.24W26.30W36.27W4

Astrometric Data

Parallax

14.039 mas

Total Proper Motion

191.641 mas/yr

PM Right Ascension

-7.04 mas/yr

PM Declination

-191.51 mas/yr

Galactic Cartesian (pc)

x = 0.089 · y = -0.331 · z = -0.939

Equatorial (J2000)

RA 285.00339° · Dec -69.94507°

Galactic ℓ, b

325.362° · -26.088°

Ecliptic λ, β

277.461° · -46.894°

HTM-20 index

1426278058

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