Key parameters at a glance
- A radius of 16.37 Earth radii
- A mass of 133.49 Earth masses
- Surface gravity around 0.50 g
- An orbital period of 4.954 days
- Semi-major axis 0.0643 AU
- Equilibrium temperature 1,772 K (1499 °C)
- Distance from Earth 1,708.26 light-years
- Earth Similarity Index 0.050
- Travel time at Voyager 1 speed 30,125,192 years
WASP-88 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#139of 1771
top 7.8%
This planet
16.37R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-88 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.37 | 11.21 |
| Mass (M⊕) | 1.00 | 133.49 | 317.83 |
| Density (g/cm³) | 5.51 | 0.14 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.50 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,489.55 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 133.489 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 100566492
Gaia DR2
Gaia DR2 6482103014085857024
Gaia DR3
Gaia DR3 6482103014085857024
System
WASP-88
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.95 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0643 AU.
Transit Fingerprint
Depth
0.700 %
Duration
6.048 h
Impact parameter b
0.230
Rp / R★
0.084000
Transit midpoint (BJD)
2,458,248.2653
Photometric dip
Transit produces a flux drop of 7,000 ppm lasting ≈ 6.05 h.
Extended Orbital Architecture
Planet / star radius ratio
0.084000
Semi-major axis / stellar radius
6.670
Impact parameter (b)
0.230
RV semi-amplitude (K)
52.400 m/s
Transit mid-time (BJD)
2,458,248.2653
Angular separation (arcsec)
0.12300
Eq. Temperature
1,772K
(1499 °C)
Insolation (S⊕)
1,489.55
Earth = 1.00
Earth Similarity (ESI)
0.050
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
Delrez et al. 2014Instrument
iKon-L CCD Camera
Publication
2014-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2014 at SuperWASP (12 shown).
Host System: WASP-88
Spectral Class
F-type yellow-white
Effective Temperature
6,430 K — hotter than the Sun (5,778 K)
Estimated Age
3.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.800 R☉
Stellar Mass
0.940 M☉
Metallicity [Fe/H]
-0.08
Extended Stellar Properties
Surface gravity (log g)
3.960 dex
Stellar density
0.230 g/cm³
Systemic radial velocity
-5.15 km/s
Rotational v·sin i
8.40 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.881 mas
Total Proper Motion
7.549 mas/yr
PM Right Ascension
5.83 mas/yr
PM Declination
-4.80 mas/yr
Galactic Cartesian (pc)
x = 0.422 · y = -0.512 · z = -0.749
Equatorial (J2000)
RA 309.51123° · Dec -48.46208°
Galactic ℓ, b
351.098° · -37.304°
Ecliptic λ, β
298.806° · -28.898°
HTM-20 index
-2045471564
Similar Worlds
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