Key parameters at a glance
- A radius of 15.47 Earth radii
- A mass of 394.11 Earth masses
- Surface gravity around 1.65 g
- An orbital period of 2.341 days
- Semi-major axis 0.0365 AU
- Equilibrium temperature 1,772 K (1499 °C)
- Distance from Earth 1,050.59 light-years
- Earth Similarity Index 0.067
- Travel time at Voyager 1 speed 18,527,227 years
WASP-24 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#201of 1771
top 11.3%
This planet
15.47R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-24 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 15.47 | 11.21 |
| Mass (M⊕) | 1.00 | 394.11 | 317.83 |
| Density (g/cm³) | 5.51 | 0.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.65 | 2.53 |
| Insolation (S⊕) | 1.00 | 934.47 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 394.109 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 460396820
Gaia DR2
Gaia DR2 1153682508388170112
Gaia DR3
Gaia DR3 1153682508388170112
System
WASP-24
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.34 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0365 AU.
Transit Fingerprint
Depth
1.000 %
Duration
2.683 h
Impact parameter b
0.653
Rp / R★
0.100400
Transit midpoint (BJD)
2,455,402.1274
Photometric dip
Transit produces a flux drop of 10,000 ppm lasting ≈ 2.68 h.
Extended Orbital Architecture
Planet / star radius ratio
0.100400
Semi-major axis / stellar radius
5.910
Impact parameter (b)
0.653
RV semi-amplitude (K)
148.200 m/s
Transit mid-time (BJD)
2,455,402.1274
Long. of periastron (ω)
70.00°
Sky-projected obliquity (λ)
-4.70°
Angular separation (arcsec)
0.11300
Eq. Temperature
1,772K
(1499 °C)
Insolation (S⊕)
934.47
Earth = 1.00
Earth Similarity (ESI)
0.067
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
Street et al. 2010Instrument
iKon-L CCD Camera
Publication
2010-09
Observation locale
Ground
Discovery cohort
Planets confirmed in 2010 at SuperWASP (12 shown).
Host System: WASP-24
Spectral Class
F-type yellow-white
Effective Temperature
6,075 K — hotter than the Sun (5,778 K)
Estimated Age
3.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.420 R☉
Stellar Mass
1.430 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
4.260 dex
Stellar density
0.710 g/cm³
Systemic radial velocity
-17.79 km/s
Rotational v·sin i
7.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.076 mas
Total Proper Motion
18.843 mas/yr
PM Right Ascension
-16.71 mas/yr
PM Declination
-8.70 mas/yr
Galactic Cartesian (pc)
x = -0.679 · y = -0.733 · z = 0.041
Equatorial (J2000)
RA 227.21550° · Dec 2.34329°
Galactic ℓ, b
1.863° · 48.830°
Ecliptic λ, β
224.046° · 19.220°
HTM-20 index
573335399
Observation Record
RV measurements
1
Emission spectra
3
Archive notes
1
Similar Worlds
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