Key parameters at a glance
- A radius of 11.21 Earth radii
- A mass of 82.58 Earth masses
- Surface gravity around 0.66 g
- An orbital period of 3.868 days
- Semi-major axis 0.0453 AU
- Equilibrium temperature 971 K (698 °C)
- Distance from Earth 162.95 light-years
- Earth Similarity Index 0.126
- Travel time at Voyager 1 speed 2,873,608 years
- Almost certainly tidally locked to its host star given the close orbit
WASP-69 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1628of 1771
top 91.9%
This planet
11.21R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-69 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.21 | 11.21 |
| Mass (M⊕) | 1.00 | 82.58 | 317.83 |
| Density (g/cm³) | 5.51 | 0.29 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.66 | 2.53 |
| Insolation (S⊕) | 1.00 | 180.56 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 82.580 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 248853232
Gaia DR2
Gaia DR2 6910753016653587840
Gaia DR3
Gaia DR3 6910753016653587840
System
WASP-69
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.87 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0453 AU.
Transit Fingerprint
Depth
1.726 %
Duration
2.187 h
Impact parameter b
0.686
Rp / R★
0.133600
Transit midpoint (BJD)
2,455,748.8343
Photometric dip
Transit produces a flux drop of 17,260 ppm lasting ≈ 2.19 h.
Extended Orbital Architecture
Planet / star radius ratio
0.133600
Semi-major axis / stellar radius
12.170
Impact parameter (b)
0.686
RV semi-amplitude (K)
38.100 m/s
Transit mid-time (BJD)
2,455,748.8343
Long. of periastron (ω)
90.00°
Sky-projected obliquity (λ)
0.05°
True obliquity (ψ)
29.20°
Angular separation (arcsec)
0.90700
Eq. Temperature
971K
(698 °C)
Insolation (S⊕)
180.56
Earth = 1.00
Earth Similarity (ESI)
0.126
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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
Anderson et al. 2014Instrument
iKon-L CCD Camera
Publication
2014-12
Observation locale
Ground
Discovery cohort
Planets confirmed in 2014 at SuperWASP (12 shown).
Host System: WASP-69
Spectral Class
K-type orange
Effective Temperature
4,792 K — cooler than the Sun (5,778 K)
Estimated Age
1.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.801 R☉
Stellar Mass
0.830 M☉
Metallicity [Fe/H]
0.35
Extended Stellar Properties
Surface gravity (log g)
4.570 dex
Stellar density
2.170 g/cm³
Systemic radial velocity
-9.63 km/s
Rotational v·sin i
1.54 km/s
Rotation period
23.07 days
Activity index (log R'HK)
-4.597
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
19.987 mas
Total Proper Motion
99.320 mas/yr
PM Right Ascension
33.68 mas/yr
PM Declination
-93.44 mas/yr
Galactic Cartesian (pc)
x = 0.705 · y = -0.704 · z = -0.089
Equatorial (J2000)
RA 315.02597° · Dec -5.09486°
Galactic ℓ, b
43.858° · -30.826°
Ecliptic λ, β
315.964° · 11.453°
HTM-20 index
-805884556
Observation Record
Transmission spectra
1
Emission spectra
7
Archive notes
1
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