Key parameters at a glance
- A radius of 13.10 Earth radii
- A mass of 953.49 Earth masses
- Surface gravity around 5.56 g
- An orbital period of 2,990.000 days
- Semi-major axis 3.7000 AU
- Distance from Earth 126.17 light-years
- Earth Similarity Index 0.398
- Travel time at Voyager 1 speed 2,225,046 years
HD 108202 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#910of 1771
top 51.3%
This planet
13.10R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 108202 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.10 | 11.21 |
| Mass (M⊕) | 1.00 | 953.49 | 317.83 |
| Density (g/cm³) | 5.51 | 2.33 | 1.33 |
| Surface Gravity (g) | 1.00 | 5.56 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 953.485 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HD
HD 108202
HIP
HIP 60648
TIC
TIC 94924490
Gaia DR2
Gaia DR2 3694842171545206656
Gaia DR3
Gaia DR3 3694842171545206656
System
HD 108202
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 8.19 Earth years on a highly eccentric trajectory at a mean orbital distance of 3.7000 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.398
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
Philipot et al. 2023Instrument
HARPS Spectrograph
Publication
2023-08
Observation locale
Ground
Discovery cohort
Planets confirmed in 2023 at La Silla Observatory (12 shown).
Host System: HD 108202
Spectral Class
K-type orange
Effective Temperature
4,556 K — cooler than the Sun (5,778 K)
Estimated Age
6.50 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.664 R☉
Stellar Mass
0.740 M☉
Metallicity [Fe/H]
0.30
Extended Stellar Properties
Surface gravity (log g)
4.652 dex
Stellar density
3.474 g/cm³
Activity index (log R'HK)
-4.500
Metallicity ratio
[M/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
25.821 mas
Total Proper Motion
319.582 mas/yr
PM Right Ascension
-310.08 mas/yr
PM Declination
-77.36 mas/yr
Galactic Cartesian (pc)
x = -0.993 · y = -0.113 · z = -0.019
Equatorial (J2000)
RA 186.46132° · Dec -1.11092°
Galactic ℓ, b
289.604° · 61.097°
Ecliptic λ, β
186.368° · 1.545°
HTM-20 index
2108238607
Similar Worlds
HD 4732 c
Gas Giant · K-type orange
Radius 13.10 R⊕ · 178.7 ly
HD 37605 c
Gas Giant · K-type orange
Radius 13.10 R⊕ · 152.6 ly
HD 102843 b
Gas Giant · K-type orange
Radius 13.10 R⊕ · 204.7 ly
HD 142245 b
Gas Giant · K-type orange
Radius 13.10 R⊕ · 317.1 ly
HD 112570 b
Gas Giant · K-type orange
Radius 13.10 R⊕ · 330.0 ly
KOINTREAU-3 b
Gas Giant · K-type orange
Radius 13.10 R⊕ · 458.5 ly