Key parameters at a glance
- A radius of 14.80 Earth radii
- A mass of 343.26 Earth masses
- Surface gravity around 1.57 g
- An orbital period of 5.084 days
- Semi-major axis 0.0621 AU
- Equilibrium temperature 1,490 K (1217 °C)
- Distance from Earth 738.41 light-years
- Earth Similarity Index 0.085
- Travel time at Voyager 1 speed 13,021,929 years
WASP-68 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#252of 1771
top 14.2%
This planet
14.80R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-68 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.80 | 11.21 |
| Mass (M⊕) | 1.00 | 343.26 | 317.83 |
| Density (g/cm³) | 5.51 | 0.67 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.57 | 2.53 |
| Insolation (S⊕) | 1.00 | 843.48 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 343.256 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HD
HD 193334
TIC
TIC 71841620
Gaia DR2
Gaia DR2 6860535606196306304
Gaia DR3
Gaia DR3 6860535606196306304
System
WASP-68
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.08 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0621 AU.
Transit Fingerprint
Depth
0.570 %
Duration
5.084 h
Impact parameter b
0.260
Rp / R★
0.075000
Transit midpoint (BJD)
2,456,802.0892
Photometric dip
Transit produces a flux drop of 5,700 ppm lasting ≈ 5.08 h.
Extended Orbital Architecture
Planet / star radius ratio
0.075000
Semi-major axis / stellar radius
7.930
Impact parameter (b)
0.260
RV semi-amplitude (K)
97.900 m/s
Transit mid-time (BJD)
2,456,802.0892
Angular separation (arcsec)
0.27400
Eq. Temperature
1,490K
(1217 °C)
Insolation (S⊕)
843.48
Earth = 1.00
Earth Similarity (ESI)
0.085
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-68
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,910 K — hotter than the Sun (5,778 K)
Estimated Age
5.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.790 R☉
Stellar Mass
1.490 M☉
Metallicity [Fe/H]
0.22
Extended Stellar Properties
Surface gravity (log g)
4.170 dex
Stellar density
0.360 g/cm³
Systemic radial velocity
28.64 km/s
Rotational v·sin i
2.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
4.388 mas
Total Proper Motion
12.784 mas/yr
PM Right Ascension
-11.17 mas/yr
PM Declination
-6.21 mas/yr
Galactic Cartesian (pc)
x = 0.543 · y = -0.772 · z = -0.331
Equatorial (J2000)
RA 305.09572° · Dec -19.31473°
Galactic ℓ, b
24.369° · -27.947°
Ecliptic λ, β
302.856° · 0.211°
HTM-20 index
1768049979
Similar Worlds
HAT-P-1 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.78 R⊕ · 518.5 ly
Gaia-2 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.82 R⊕ · 682.4 ly
HAT-P-53 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.77 R⊕ · 2,174.8 ly
KELT-23 A b
Gas Giant · G-type yellow (Sun-like)
Radius 14.83 R⊕ · 411.8 ly
HAT-P-55 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.84 R⊕ · 1,667.9 ly
WASP-36 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.87 R⊕ · 1,260.1 ly