Key parameters at a glance
- A radius of 14.62 Earth radii
- A mass of 178.30 Earth masses
- Surface gravity around 0.83 g
- An orbital period of 5.611 days
- Semi-major axis 0.0681 AU
- Equilibrium temperature 1,604 K (1331 °C)
- Distance from Earth 2,045.21 light-years
- Earth Similarity Index 0.069
- Travel time at Voyager 1 speed 36,067,336 years
WASP-169 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#266of 1771
top 15.0%
This planet
14.62R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-169 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.62 | 11.21 |
| Mass (M⊕) | 1.00 | 178.30 | 317.83 |
| Density (g/cm³) | 5.51 | 0.33 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.83 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,486.86 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 178.303 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 386259537
Gaia DR2
Gaia DR2 5723772524469252096
Gaia DR3
Gaia DR3 5723772524469252096
System
WASP-169
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.61 Earth days (1.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0681 AU.
Transit Fingerprint
Depth
0.446 %
Duration
6.053 h
Impact parameter b
0.270
Rp / R★
0.076700
Transit midpoint (BJD)
2,457,697.0176
Photometric dip
Transit produces a flux drop of 4,460 ppm lasting ≈ 6.05 h.
Extended Orbital Architecture
Planet / star radius ratio
0.076700
Semi-major axis / stellar radius
7.300
Impact parameter (b)
0.270
RV semi-amplitude (K)
52.900 m/s
Transit mid-time (BJD)
2,457,697.0176
Angular separation (arcsec)
0.10900
Eq. Temperature
1,604K
(1331 °C)
Insolation (S⊕)
1,486.86
Earth = 1.00
Earth Similarity (ESI)
0.069
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
Nielsen et al. 2019Instrument
iKon-L CCD Camera
Publication
2019-10
Observation locale
Ground
Discovery cohort
Planets confirmed in 2019 at WASP-South (9 shown).
Host System: WASP-169
Spectral Class
F-type yellow-white
Effective Temperature
6,110 K — hotter than the Sun (5,778 K)
Estimated Age
3.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.011 R☉
Stellar Mass
1.337 M☉
Metallicity [Fe/H]
0.06
Extended Stellar Properties
Surface gravity (log g)
3.958 dex
Stellar density
0.234 g/cm³
Systemic radial velocity
67.66 km/s
Rotational v·sin i
4.30 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.566 mas
Total Proper Motion
13.726 mas/yr
PM Right Ascension
-13.18 mas/yr
PM Declination
-3.82 mas/yr
Galactic Cartesian (pc)
x = -0.592 · y = 0.774 · z = -0.224
Equatorial (J2000)
RA 127.38723° · Dec -12.94477°
Galactic ℓ, b
236.341° · 14.947°
Ecliptic λ, β
133.599° · -30.900°
HTM-20 index
213283955
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