Key parameters at a glance
- A radius of 13.07 Earth radii
- A mass of 466.83 Earth masses
- Surface gravity around 2.73 g
- An orbital period of 1.955 days
- Semi-major axis 0.0293 AU
- Equilibrium temperature 1,395 K (1122 °C)
- Distance from Earth 602.89 light-years
- Earth Similarity Index 0.106
- Travel time at Voyager 1 speed 10,632,015 years
WASP-50 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#952of 1771
top 53.7%
This planet
13.07R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-50 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.07 | 11.21 |
| Mass (M⊕) | 1.00 | 466.83 | 317.83 |
| Density (g/cm³) | 5.51 | 1.33 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.73 | 2.53 |
| Insolation (S⊕) | 1.00 | 690.34 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 466.829 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 382391899
Gaia DR2
Gaia DR2 5160557726183065984
Gaia DR3
Gaia DR3 5160557726183065984
System
WASP-50
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.96 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0293 AU.
Transit Fingerprint
Depth
1.964 %
Duration
1.834 h
Impact parameter b
0.669
Rp / R★
0.139000
Transit midpoint (BJD)
2,458,411.0934
Photometric dip
Transit produces a flux drop of 19,635 ppm lasting ≈ 1.83 h.
Extended Orbital Architecture
Planet / star radius ratio
0.139000
Semi-major axis / stellar radius
7.510
Impact parameter (b)
0.669
RV semi-amplitude (K)
256.600 m/s
Transit mid-time (BJD)
2,458,411.0934
Long. of periastron (ω)
44.00°
Sky-projected obliquity (λ)
-2.90°
Angular separation (arcsec)
0.15900
Eq. Temperature
1,395K
(1122 °C)
Insolation (S⊕)
690.34
Earth = 1.00
Earth Similarity (ESI)
0.106
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Gillon et al. 2011Instrument
iKon-L CCD Camera
Publication
2011-09
Observation locale
Ground
Discovery cohort
Planets confirmed in 2011 at SuperWASP (8 shown).
Host System: WASP-50
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,400 K — cooler than the Sun (5,778 K)
Estimated Age
7.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.843 R☉
Stellar Mass
0.892 M☉
Metallicity [Fe/H]
-0.12
Extended Stellar Properties
Surface gravity (log g)
4.540 dex
Stellar density
2.120 g/cm³
Systemic radial velocity
25.24 km/s
Rotational v·sin i
1.97 km/s
Rotation period
16.30 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.382 mas
Total Proper Motion
9.545 mas/yr
PM Right Ascension
3.28 mas/yr
PM Declination
8.96 mas/yr
Galactic Cartesian (pc)
x = 0.710 · y = 0.678 · z = -0.189
Equatorial (J2000)
RA 43.68807° · Dec -10.89802°
Galactic ℓ, b
189.679° · -56.789°
Ecliptic λ, β
37.610° · -26.312°
HTM-20 index
2027163942
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