Key parameters at a glance
- A radius of 17.15 Earth radii
- A mass of 285.73 Earth masses
- Surface gravity around 0.97 g
- An orbital period of 2.609 days
- Semi-major axis 0.0394 AU
- Equilibrium temperature 1,789 K (1516 °C)
- Distance from Earth 1,947.24 light-years
- Earth Similarity Index 0.052
- Travel time at Voyager 1 speed 34,339,507 years
TOI-5592 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#104of 1771
top 5.8%
This planet
17.15R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5592 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 17.15 | 11.21 |
| Mass (M⊕) | 1.00 | 285.73 | 317.83 |
| Density (g/cm³) | 5.51 | 0.22 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.97 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,712.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 285.728 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 88529975
Gaia DR2
Gaia DR2 1101653957463314688
Gaia DR3
Gaia DR3 1101653957463314688
System
TOI-5592
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.61 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0394 AU.
Transit Fingerprint
Depth
1.260 %
Duration
1.985 h
Impact parameter b
0.941
Transit midpoint (BJD)
2,459,794.0122
Photometric dip
Transit produces a flux drop of 12,600 ppm lasting ≈ 1.99 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
6.070
Impact parameter (b)
0.941
RV semi-amplitude (K)
116.700 m/s
Transit mid-time (BJD)
2,459,794.0122
Angular separation (arcsec)
0.06590
Eq. Temperature
1,789K
(1516 °C)
Insolation (S⊕)
1,712.00
Earth = 1.00
Earth Similarity (ESI)
0.052
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-5592
Spectral Class
F-type yellow-white
Effective Temperature
6,237 K — hotter than the Sun (5,778 K)
Estimated Age
3.60 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.393 R☉
Stellar Mass
1.194 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.226 dex
Stellar density
0.621 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.646 mas
Total Proper Motion
11.737 mas/yr
PM Right Ascension
5.10 mas/yr
PM Declination
-10.57 mas/yr
Galactic Cartesian (pc)
x = -0.117 · y = 0.392 · z = 0.913
Equatorial (J2000)
RA 106.68007° · Dec 65.85725°
Galactic ℓ, b
149.968° · 26.126°
Ecliptic λ, β
99.226° · 42.952°
HTM-20 index
-2125548525
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