Key parameters at a glance
- A radius of 10.42 Earth radii
- A mass of 588.00 Earth masses
- Surface gravity around 5.42 g
- An orbital period of 2.204 days
- Semi-major axis 0.0272 AU
- Equilibrium temperature 837 K (564 °C)
- Distance from Earth 998.51 light-years
- Earth Similarity Index 0.147
- Travel time at Voyager 1 speed 17,608,670 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5634 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1737of 1771
top 98.0%
This planet
10.42R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5634 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.42 | 11.21 |
| Mass (M⊕) | 1.00 | 588.00 | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | 5.42 | 2.53 |
| Insolation (S⊕) | 1.00 | 77.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 588.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 119585136
Gaia DR2
Gaia DR2 3979511431397114752
Gaia DR3
Gaia DR3 3979511431397114752
System
TOI-5634
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.20 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0272 AU.
Transit Fingerprint
Depth
2.828 %
Duration
1.670 h
Impact parameter b
0.360
Rp / R★
0.177000
Transit midpoint (BJD)
2,459,663.4184
Photometric dip
Transit produces a flux drop of 28,280 ppm lasting ≈ 1.67 h.
Extended Orbital Architecture
Planet / star radius ratio
0.177000
Semi-major axis / stellar radius
10.850
Impact parameter (b)
0.360
RV semi-amplitude (K)
439.000 m/s
Transit mid-time (BJD)
2,459,663.4184
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.08880
Eq. Temperature
837K
(564 °C)
Insolation (S⊕)
77.00
Earth = 1.00
Earth Similarity (ESI)
0.147
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.
Discovery Paper
Primary reference
Kanodia et al. 2024Instrument
TESS CCD Array
Publication
2024-08
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5634 A
Spectral Class
K-type orange
Effective Temperature
3,896 K — cooler than the Sun (5,778 K)
Estimated Age
7.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.540 R☉
Stellar Mass
0.556 M☉
Metallicity [Fe/H]
-0.27
Extended Stellar Properties
Surface gravity (log g)
4.730 dex
Stellar density
4.990 g/cm³
Rotational v·sin i
2.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.241 mas
Total Proper Motion
66.342 mas/yr
PM Right Ascension
-61.15 mas/yr
PM Declination
-25.73 mas/yr
Galactic Cartesian (pc)
x = -0.931 · y = 0.071 · z = 0.358
Equatorial (J2000)
RA 175.64364° · Dec 20.96529°
Galactic ℓ, b
230.646° · 73.134°
Ecliptic λ, β
167.438° · 17.461°
HTM-20 index
-56388896
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