Key parameters at a glance
- A radius of 14.12 Earth radii
- A mass of 209.13 Earth masses
- Surface gravity around 1.05 g
- An orbital period of 3.466 days
- Semi-major axis 0.0482 AU
- Equilibrium temperature 1,624 K (1351 °C)
- Distance from Earth 1,964.23 light-years
- Earth Similarity Index 0.072
- Travel time at Voyager 1 speed 34,639,174 years
WASP-165 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#367of 1771
top 20.7%
This planet
14.12R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-165 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.12 | 11.21 |
| Mass (M⊕) | 1.00 | 209.13 | 317.83 |
| Density (g/cm³) | 5.51 | 0.44 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.05 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,373.53 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 209.132 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 228381868
Gaia DR2
Gaia DR2 2415410962124813056
Gaia DR3
Gaia DR3 2415410962124813056
System
WASP-165
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.47 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0482 AU.
Transit Fingerprint
Depth
0.544 %
Duration
4.176 h
Impact parameter b
0.530
Rp / R★
0.073800
Transit midpoint (BJD)
2,457,649.7114
Photometric dip
Transit produces a flux drop of 5,440 ppm lasting ≈ 4.18 h.
Extended Orbital Architecture
Planet / star radius ratio
0.073800
Semi-major axis / stellar radius
5.930
Impact parameter (b)
0.530
RV semi-amplitude (K)
76.000 m/s
Transit mid-time (BJD)
2,457,649.7114
Angular separation (arcsec)
0.08010
Eq. Temperature
1,624K
(1351 °C)
Insolation (S⊕)
1,373.53
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
Lendl et al. 2019Instrument
iKon-L CCD Camera
Publication
2019-01
Observation locale
Ground
Discovery cohort
Planets confirmed in 2018 at SuperWASP-South (12 shown).
Host System: WASP-165
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,599 K — cooler than the Sun (5,778 K)
Estimated Age
4.77 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.750 R☉
Stellar Mass
1.248 M☉
Metallicity [Fe/H]
0.33
Extended Stellar Properties
Surface gravity (log g)
3.930 dex
Stellar density
0.328 g/cm³
Systemic radial velocity
25.66 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.634 mas
Total Proper Motion
28.200 mas/yr
PM Right Ascension
28.02 mas/yr
PM Declination
-3.21 mas/yr
Galactic Cartesian (pc)
x = 0.955 · y = -0.040 · z = -0.294
Equatorial (J2000)
RA 357.58065° · Dec -17.07759°
Galactic ℓ, b
65.211° · -72.666°
Ecliptic λ, β
350.846° · -14.678°
HTM-20 index
1391964593
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