Key parameters at a glance
- A radius of 12.54 Earth radii
- A mass of 148.43 Earth masses
- Surface gravity around 0.94 g
- An orbital period of 3.361 days
- Semi-major axis 0.0422 AU
- Equilibrium temperature 1,167 K (894 °C)
- Distance from Earth 642.92 light-years
- Earth Similarity Index 0.109
- Travel time at Voyager 1 speed 11,337,813 years
WASP-6 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1228of 1771
top 69.3%
This planet
12.54R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-6 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.54 | 11.21 |
| Mass (M⊕) | 1.00 | 148.43 | 317.83 |
| Density (g/cm³) | 5.51 | 0.44 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.94 | 2.53 |
| Insolation (S⊕) | 1.00 | 288.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 148.426 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 204376737
Gaia DR2
Gaia DR2 2385171398768647552
Gaia DR3
Gaia DR3 2385171398768647552
System
WASP-6
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.36 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0422 AU.
Transit Fingerprint
Depth
2.408 %
Duration
2.569 h
Impact parameter b
0.195
Rp / R★
0.144600
Transit midpoint (BJD)
2,454,596.4326
Photometric dip
Transit produces a flux drop of 24,082 ppm lasting ≈ 2.57 h.
Extended Orbital Architecture
Planet / star radius ratio
0.144600
Semi-major axis / stellar radius
11.210
Impact parameter (b)
0.195
RV semi-amplitude (K)
69.600 m/s
Transit mid-time (BJD)
2,454,596.4326
Long. of periastron (ω)
1.70°
Sky-projected obliquity (λ)
7.20°
Angular separation (arcsec)
0.21400
Eq. Temperature
1,167K
(894 °C)
Insolation (S⊕)
288.00
Earth = 1.00
Earth Similarity (ESI)
0.109
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
Tregloan Reed et al. 2015Instrument
iKon-L CCD Camera
Publication
2015-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2009 at SuperWASP (6 shown).
Host System: WASP-6
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,438 K — cooler than the Sun (5,778 K)
Estimated Age
3.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.790 R☉
Stellar Mass
0.854 M☉
Metallicity [Fe/H]
-0.15
Extended Stellar Properties
Surface gravity (log g)
4.565 dex
Stellar density
2.439 g/cm³
Systemic radial velocity
12.53 km/s
Rotational v·sin i
1.50 km/s
Rotation period
28.28 days
Activity index (log R'HK)
-4.476
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.045 mas
Total Proper Motion
43.639 mas/yr
PM Right Ascension
-23.30 mas/yr
PM Declination
-36.89 mas/yr
Galactic Cartesian (pc)
x = 0.903 · y = -0.189 · z = -0.385
Equatorial (J2000)
RA 348.15713° · Dec -22.67412°
Galactic ℓ, b
38.731° · -67.195°
Ecliptic λ, β
340.086° · -16.162°
HTM-20 index
1057571794
Observation Record
Photometric series
6
RV measurements
2
Transmission spectra
3
Emission spectra
3
Similar Worlds
HAT-P-63 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.54 R⊕ · 1,315.9 ly
TIC 237913194 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.52 R⊕ · 998.2 ly
WASP-42 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.58 R⊕ · 578.2 ly
HD 181234 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.50 R⊕ · 155.7 ly
HD 183263 c
Gas Giant · G-type yellow (Sun-like)
Radius 12.50 R⊕ · 176.8 ly
WASP-8 c
Gas Giant · G-type yellow (Sun-like)
Radius 12.50 R⊕ · 293.4 ly