Key parameters at a glance
- A radius of 13.90 Earth radii
- A mass of 124.59 Earth masses
- Surface gravity around 0.64 g
- An orbital period of 34.524 days
- Semi-major axis 0.2044 AU
- Equilibrium temperature 590 K (317 °C)
- Distance from Earth 803.50 light-years
- Earth Similarity Index 0.193
- Travel time at Voyager 1 speed 14,169,635 years
1 sibling around WASP-148
WASP-148 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 |
|---|---|---|---|---|---|---|
| WASP-148 b | Neptune-like | 8.47 | 91.22 | 8.804 | 940 | 2020 |
| WASP-148 c this | Gas Giant | 13.90 | 124.59 | 34.524 | 590 | 2020 |
WASP-148 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#456of 1771
top 25.7%
This planet
13.90R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-148 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.90 | 11.21 |
| Mass (M⊕) | 1.00 | 124.59 | 317.83 |
| Density (g/cm³) | 5.51 | 0.26 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.64 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 124.589 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 120.139 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 115524421
Gaia DR2
Gaia DR2 1358355738906114816
Gaia DR3
Gaia DR3 1358355738906114816
System
WASP-148
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 34.52 Earth days (9.5% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.2044 AU.
Extended Orbital Architecture
Semi-major axis / stellar radius
48.100
Impact parameter (b)
11.000
RV semi-amplitude (K)
24.850 m/s
Transit mid-time (BJD)
2,457,935.6000
Long. of periastron (ω)
26.10°
Angular separation (arcsec)
0.83000
Eq. Temperature
590K
(317 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.193
0 = alien, 1 = Earth-identical
Insufficient insolation data — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
H Eacute Brard et al. 2020Instrument
SOPHIE Spectrograph
Publication
2020-08
Observation locale
Ground
Discovery cohort
Planets confirmed in 2020 at Haute-Provence Observatory (6 shown).
Host System: WASP-148
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,555 K — cooler than the Sun (5,778 K)
Estimated Age
3.60 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.912 R☉
Stellar Mass
0.954 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.496 dex
Stellar density
1.760 g/cm³
Systemic radial velocity
-5.62 km/s
Rotational v·sin i
2.00 km/s
Rotation period
26.20 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
4.030 mas
Total Proper Motion
30.231 mas/yr
PM Right Ascension
-13.48 mas/yr
PM Declination
-27.06 mas/yr
Galactic Cartesian (pc)
x = -0.196 · y = -0.688 · z = 0.698
Equatorial (J2000)
RA 254.13050° · Dec 44.30254°
Galactic ℓ, b
69.454° · 38.655°
Ecliptic λ, β
241.045° · 66.154°
HTM-20 index
158085657
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