Key parameters at a glance
- A radius of 14.24 Earth radii
- A mass of 146.20 Earth masses
- Surface gravity around 0.72 g
- An orbital period of 1.750 days
- Semi-major axis 0.0272 AU
- Equilibrium temperature 1,315 K (1042 °C)
- Distance from Earth 570.18 light-years
- Earth Similarity Index 0.085
- Travel time at Voyager 1 speed 10,055,113 years
- Almost certainly tidally locked to its host star given the close orbit
WASP-52 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#329of 1771
top 18.5%
This planet
14.24R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-52 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.24 | 11.21 |
| Mass (M⊕) | 1.00 | 146.20 | 317.83 |
| Density (g/cm³) | 5.51 | 0.29 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.72 | 2.53 |
| Insolation (S⊕) | 1.00 | 605.76 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 146.200 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 427685831
Gaia DR2
Gaia DR2 2666015878575546496
Gaia DR3
Gaia DR3 2666015878575546496
System
WASP-52
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.75 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0272 AU.
Transit Fingerprint
Depth
2.710 %
Duration
1.810 h
Impact parameter b
0.600
Rp / R★
0.164600
Transit midpoint (BJD)
2,455,793.6814
Photometric dip
Transit produces a flux drop of 27,100 ppm lasting ≈ 1.81 h.
Extended Orbital Architecture
Planet / star radius ratio
0.164600
Semi-major axis / stellar radius
7.380
Impact parameter (b)
0.600
RV semi-amplitude (K)
85.000 m/s
Transit mid-time (BJD)
2,455,793.6814
Sky-projected obliquity (λ)
24.00°
True obliquity (ψ)
20.00°
Angular separation (arcsec)
0.15600
Eq. Temperature
1,315K
(1042 °C)
Insolation (S⊕)
605.76
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. 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
Hebrard et al. 2013Instrument
iKon-L CCD Camera
Publication
2013-01
Observation locale
Ground
Discovery cohort
Planets confirmed in 2012 at SuperWASP (12 shown).
Host System: WASP-52
Spectral Class
K-type orange
Effective Temperature
5,000 K — cooler than the Sun (5,778 K)
Estimated Age
0.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.790 R☉
Stellar Mass
0.870 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.582 dex
Stellar density
2.480 g/cm³
Systemic radial velocity
-1.04 km/s
Rotational v·sin i
3.60 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
5.692 mas
Total Proper Motion
44.785 mas/yr
PM Right Ascension
-6.91 mas/yr
PM Declination
-44.25 mas/yr
Galactic Cartesian (pc)
x = 0.968 · y = -0.197 · z = 0.152
Equatorial (J2000)
RA 348.49479° · Dec 8.76108°
Galactic ℓ, b
86.185° · -47.038°
Ecliptic λ, β
352.917° · 12.601°
HTM-20 index
271619583
Observation Record
RV measurements
2
Transmission spectra
3
Emission spectra
6
Archive notes
1
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