Key parameters at a glance
- A radius of 11.49 Earth radii
- A mass of 624.85 Earth masses
- Surface gravity around 4.73 g
- An orbital period of 2.136 days
- Semi-major axis 0.0279 AU
- Equilibrium temperature 890 K (617 °C)
- Distance from Earth 624.62 light-years
- Earth Similarity Index 0.191
- Travel time at Voyager 1 speed 11,015,197 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-2384 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1591of 1771
top 89.8%
This planet
11.49R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2384 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.49 | 11.21 |
| Mass (M⊕) | 1.00 | 624.85 | 317.83 |
| Density (g/cm³) | 5.51 | 2.26 | 1.33 |
| Surface Gravity (g) | 1.00 | 4.73 | 2.53 |
| Insolation (S⊕) | 1.00 | 104.30 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 624.851 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 382602147
Gaia DR2
Gaia DR2 4699702272124241152
Gaia DR3
Gaia DR3 4699702272124241152
System
TOI-2384
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.14 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0279 AU.
Transit Fingerprint
Depth
2.927 %
Duration
1.891 h
Impact parameter b
0.280
Rp / R★
0.172300
Transit midpoint (BJD)
2,459,591.9959
Photometric dip
Transit produces a flux drop of 29,273 ppm lasting ≈ 1.89 h.
Extended Orbital Architecture
Planet / star radius ratio
0.172300
Semi-major axis / stellar radius
9.820
Impact parameter (b)
0.280
RV semi-amplitude (K)
419.000 m/s
Transit mid-time (BJD)
2,459,591.9959
Angular separation (arcsec)
0.14600
Eq. Temperature
890K
(617 °C)
Insolation (S⊕)
104.30
Earth = 1.00
Earth Similarity (ESI)
0.191
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
Bryant et al. 2024Instrument
TESS CCD Array
Publication
2024-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2384
Spectral Class
K-type orange
Effective Temperature
3,943 K — cooler than the Sun (5,778 K)
Estimated Age
9.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.611 R☉
Stellar Mass
0.635 M☉
Metallicity [Fe/H]
0.33
Extended Stellar Properties
Surface gravity (log g)
4.660 dex
Stellar density
3.910 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.194 mas
Total Proper Motion
53.343 mas/yr
PM Right Ascension
8.58 mas/yr
PM Declination
-52.65 mas/yr
Galactic Cartesian (pc)
x = 0.341 · y = 0.249 · z = -0.906
Equatorial (J2000)
RA 36.15615° · Dec -65.00020°
Galactic ℓ, b
288.065° · -49.351°
Ecliptic λ, β
338.885° · -68.545°
HTM-20 index
-103586227
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