Key parameters at a glance
- A radius of 16.81 Earth radii
- A mass of 479.92 Earth masses
- Surface gravity around 1.70 g
- An orbital period of 5.215 days
- Semi-major axis 0.0661 AU
- Equilibrium temperature 1,630 K (1357 °C)
- Distance from Earth 898.84 light-years
- Earth Similarity Index 0.072
- Travel time at Voyager 1 speed 15,851,105 years
WASP-136 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#120of 1771
top 6.7%
This planet
16.81R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-136 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.81 | 11.21 |
| Mass (M⊕) | 1.00 | 479.92 | 317.83 |
| Density (g/cm³) | 5.51 | 0.58 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.70 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,843.46 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 479.921 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 176220787
Gaia DR2
Gaia DR2 2441013811932929280
Gaia DR3
Gaia DR3 2441013811932929280
System
WASP-136
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.22 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0661 AU.
Transit Fingerprint
Depth
0.521 %
Duration
5.590 h
Impact parameter b
0.300
Rp / R★
0.068000
Transit midpoint (BJD)
2,456,776.9055
Photometric dip
Transit produces a flux drop of 5,206 ppm lasting ≈ 5.59 h.
Extended Orbital Architecture
Planet / star radius ratio
0.068000
Semi-major axis / stellar radius
7.400
Impact parameter (b)
0.300
Transit mid-time (BJD)
2,456,776.9055
Sky-projected obliquity (λ)
-38.00°
True obliquity (ψ)
60.00°
Angular separation (arcsec)
0.24000
Eq. Temperature
1,630K
(1357 °C)
Insolation (S⊕)
1,843.46
Earth = 1.00
Earth Similarity (ESI)
0.072
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
Lam et al. 2017Instrument
iKon-L CCD Camera
Publication
2017-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at SuperWASP (11 shown).
Host System: WASP-136
Spectral Class
F-type yellow-white
Effective Temperature
6,250 K — hotter than the Sun (5,778 K)
Estimated Age
3.62 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.390 R☉
Stellar Mass
1.410 M☉
Metallicity [Fe/H]
-0.18
Extended Stellar Properties
Surface gravity (log g)
3.900 dex
Stellar density
0.186 g/cm³
Systemic radial velocity
11.64 km/s
Rotational v·sin i
12.20 km/s
Rotation period
5.40 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.601 mas
Total Proper Motion
9.959 mas/yr
PM Right Ascension
2.47 mas/yr
PM Declination
9.65 mas/yr
Galactic Cartesian (pc)
x = 0.988 · y = 0.006 · z = -0.155
Equatorial (J2000)
RA 0.32576° · Dec -8.92625°
Galactic ℓ, b
87.529° · -68.281°
Ecliptic λ, β
356.719° · -8.314°
HTM-20 index
783064719
Similar Worlds
TOI-4329 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 2,339.0 ly
HATS-27 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 2,664.7 ly
WASP-168 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 991.3 ly
HATS-65 b
Gas Giant · F-type yellow-white
Radius 16.82 R⊕ · 1,609.0 ly
WASP-176 b
Gas Giant · F-type yellow-white
Radius 16.87 R⊕ · 1,853.9 ly
HAT-P-56 b
Gas Giant · F-type yellow-white
Radius 16.93 R⊕ · 1,045.8 ly