Key parameters at a glance
- A radius of 14.71 Earth radii
- A mass of 155.10 Earth masses
- Surface gravity around 0.72 g
- An orbital period of 3.622 days
- Semi-major axis 0.0486 AU
- Equilibrium temperature 1,488 K (1215 °C)
- Distance from Earth 1,286.64 light-years
- Earth Similarity Index 0.072
- Travel time at Voyager 1 speed 22,689,891 years
TOI-5386 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#259of 1771
top 14.6%
This planet
14.71R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5386 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.71 | 11.21 |
| Mass (M⊕) | 1.00 | 155.10 | 317.83 |
| Density (g/cm³) | 5.51 | 0.27 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.72 | 2.53 |
| Insolation (S⊕) | 1.00 | 817.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 155.100 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 202425357
Gaia DR2
Gaia DR2 1616054670018575872
Gaia DR3
Gaia DR3 1616054670018575872
System
TOI-5386
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.62 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0486 AU.
Transit Fingerprint
Depth
1.172 %
Duration
2.223 h
Impact parameter b
0.884
Transit midpoint (BJD)
2,459,621.2824
Photometric dip
Transit produces a flux drop of 11,720 ppm lasting ≈ 2.22 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
8.384
Impact parameter (b)
0.884
RV semi-amplitude (K)
58.100 m/s
Transit mid-time (BJD)
2,459,621.2824
Angular separation (arcsec)
0.12300
Eq. Temperature
1,488K
(1215 °C)
Insolation (S⊕)
817.00
Earth = 1.00
Earth Similarity (ESI)
0.072
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
Yee et al. 2025Instrument
TESS CCD Array
Publication
2025-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5386 A
Spectral Class
F-type yellow-white
Effective Temperature
6,094 K — hotter than the Sun (5,778 K)
Estimated Age
3.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.245 R☉
Stellar Mass
1.165 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.314 dex
Stellar density
0.850 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.507 mas
Total Proper Motion
17.279 mas/yr
PM Right Ascension
-16.15 mas/yr
PM Declination
6.14 mas/yr
Galactic Cartesian (pc)
x = -0.341 · y = -0.354 · z = 0.871
Equatorial (J2000)
RA 226.10692° · Dec 60.53623°
Galactic ℓ, b
98.269° · 49.740°
Ecliptic λ, β
176.452° · 70.021°
HTM-20 index
-125746944
Similar Worlds
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TOI-3474 b
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WASP-169 b
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XO-3 b
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Radius 14.80 R⊕ · 694.9 ly