Key parameters at a glance
- A radius of 12.50 Earth radii
- A mass of 2,884.93 Earth masses
- Surface gravity around 18.46 g
- An orbital period of 6,134.427 days
- Semi-major axis 6.2480 AU
- Distance from Earth 122.09 light-years
- Earth Similarity Index 0.396
- Travel time at Voyager 1 speed 2,153,057 years
HD 25015 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1235of 1771
top 69.7%
This planet
12.50R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 25015 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.50 | 11.21 |
| Mass (M⊕) | 1.00 | 2,884.93 | 317.83 |
| Density (g/cm³) | 5.51 | 8.12 | 1.33 |
| Surface Gravity (g) | 1.00 | 18.46 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 2,884.928 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 1,423.878 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 25015
HIP
HIP 18527
TIC
TIC 178249461
Gaia DR2
Gaia DR2 5094032153102626688
Gaia DR3
Gaia DR3 5094032153102626688
System
HD 25015
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 16.80 Earth years on a highly eccentric trajectory at a mean orbital distance of 6.2480 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.396
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
Rickman et al. 2019Instrument
CORALIE Spectrograph
Publication
2019-05
Observation locale
Ground
Discovery cohort
Planets confirmed in 2019 at La Silla Observatory (12 shown).
Host System: HD 25015
Spectral Class
K-type orange
Effective Temperature
5,160 K — cooler than the Sun (5,778 K)
Estimated Age
4.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.830 R☉
Stellar Mass
0.860 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.400 dex
Stellar density
2.247 g/cm³
Systemic radial velocity
28.15 km/s
Rotational v·sin i
3.49 km/s
Rotation period
13.60 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
26.686 mas
Total Proper Motion
159.372 mas/yr
PM Right Ascension
118.72 mas/yr
PM Declination
106.33 mas/yr
Galactic Cartesian (pc)
x = 0.477 · y = 0.808 · z = -0.346
Equatorial (J2000)
RA 59.43355° · Dec -20.26733°
Galactic ℓ, b
214.130° · -47.043°
Ecliptic λ, β
51.661° · -39.726°
HTM-20 index
1706123577
Similar Worlds
HD 38801 b
Gas Giant · K-type orange
Radius 12.50 R⊕ · 298.2 ly
HD 86065 b
Gas Giant · K-type orange
Radius 12.50 R⊕ · 131.7 ly
HD 115404 A c
Gas Giant · K-type orange
Radius 12.50 R⊕ · 35.8 ly
HD 94890 c
Gas Giant · K-type orange
Radius 12.50 R⊕ · 201.2 ly
BD-08 2823 c
Gas Giant · K-type orange
Radius 12.50 R⊕ · 134.8 ly
HD 164604 c
Gas Giant · K-type orange
Radius 12.50 R⊕ · 128.4 ly