Key parameters at a glance
- A radius of 15.80 Earth radii
- A mass of 117.60 Earth masses
- Surface gravity around 0.47 g
- An orbital period of 4.378 days
- Semi-major axis 0.0574 AU
- Equilibrium temperature 1,470 K (1197 °C)
- Distance from Earth 948.08 light-years
- Earth Similarity Index 0.066
- Travel time at Voyager 1 speed 16,719,448 years
WASP-63 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#174of 1771
top 9.8%
This planet
15.80R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-63 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 15.80 | 11.21 |
| Mass (M⊕) | 1.00 | 117.60 | 317.83 |
| Density (g/cm³) | 5.51 | 0.17 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.47 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,103.27 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 117.597 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 393414358
Gaia DR2
Gaia DR2 5574766468155514752
Gaia DR3
Gaia DR3 5574766468155514752
System
WASP-63
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.38 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0574 AU.
Transit Fingerprint
Depth
0.610 %
Duration
5.390 h
Impact parameter b
0.180
Rp / R★
0.078200
Transit midpoint (BJD)
2,458,574.7710
Photometric dip
Transit produces a flux drop of 6,100 ppm lasting ≈ 5.39 h.
Extended Orbital Architecture
Planet / star radius ratio
0.078200
Semi-major axis / stellar radius
6.590
Impact parameter (b)
0.180
RV semi-amplitude (K)
39.000 m/s
Transit mid-time (BJD)
2,458,574.7710
Angular separation (arcsec)
0.19700
Eq. Temperature
1,470K
(1197 °C)
Insolation (S⊕)
1,103.27
Earth = 1.00
Earth Similarity (ESI)
0.066
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
Hellier et al. 2012Instrument
iKon-L CCD Camera
Publication
2012-10
Observation locale
Ground
Discovery cohort
Planets confirmed in 2012 at SuperWASP (12 shown).
Host System: WASP-63
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,550 K — cooler than the Sun (5,778 K)
Estimated Age
8.30 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.860 R☉
Stellar Mass
1.280 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.010 dex
Stellar density
0.280 g/cm³
Systemic radial velocity
-23.71 km/s
Rotational v·sin i
2.80 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.411 mas
Total Proper Motion
32.456 mas/yr
PM Right Ascension
-17.56 mas/yr
PM Declination
-27.30 mas/yr
Galactic Cartesian (pc)
x = -0.059 · y = 0.782 · z = -0.620
Equatorial (J2000)
RA 94.33636° · Dec -38.32338°
Galactic ℓ, b
245.672° · -22.721°
Ecliptic λ, β
97.173° · -61.655°
HTM-20 index
-189407673
Observation Record
RV measurements
1
Transmission spectra
3
Emission spectra
3
Similar Worlds
HATS-51 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.80 R⊕ · 1,270.6 ly
WASP-113 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.79 R⊕ · 1,419.3 ly
WASP-19 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.86 R⊕ · 875.2 ly
NGTS-32 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.92 R⊕ · 2,731.4 ly
WASP-119 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.69 R⊕ · 986.5 ly
KELT-10 b
Gas Giant · G-type yellow (Sun-like)
Radius 15.68 R⊕ · 614.5 ly