Key parameters at a glance
- A radius of 12.64 Earth radii
- A mass of 412.86 Earth masses
- Surface gravity around 2.58 g
- An orbital period of 2.022 days
- Semi-major axis 0.0279 AU
- Equilibrium temperature 809 K (536 °C)
- Distance from Earth 1,099.46 light-years
- Earth Similarity Index 0.187
- Travel time at Voyager 1 speed 19,388,898 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5292 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1177of 1771
top 66.4%
This planet
12.64R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5292 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.64 | 11.21 |
| Mass (M⊕) | 1.00 | 412.86 | 317.83 |
| Density (g/cm³) | 5.51 | 1.12 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.58 | 2.53 |
| Insolation (S⊕) | 1.00 | 102.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 412.859 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 33397739
Gaia DR2
Gaia DR2 2610422023759160576
Gaia DR3
Gaia DR3 2610422023759160576
System
TOI-5292
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.02 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
4.403 %
Duration
45.220 h
Impact parameter b
0.199
Transit midpoint (BJD)
2,460,551.1467
Photometric dip
Transit produces a flux drop of 44,030 ppm lasting ≈ 45.22 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
9.820
Impact parameter (b)
0.199
RV semi-amplitude (K)
311.500 m/s
Transit mid-time (BJD)
2,460,551.1467
Long. of periastron (ω)
227.00°
Angular separation (arcsec)
0.08280
Eq. Temperature
809K
(536 °C)
Insolation (S⊕)
102.00
Earth = 1.00
Earth Similarity (ESI)
0.187
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
Dransfield et al. 2026Instrument
TESS CCD Array
Publication
2026-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2026 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5292 A
Spectral Class
M-type red dwarf
Effective Temperature
3,919 K — cooler than the Sun (5,778 K)
Estimated Age
5.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.611 R☉
Stellar Mass
0.596 M☉
Metallicity [Fe/H]
0.33
Extended Stellar Properties
Surface gravity (log g)
4.642 dex
Stellar density
4.120 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.940 mas
Total Proper Motion
11.086 mas/yr
PM Right Ascension
-8.70 mas/yr
PM Declination
-6.87 mas/yr
Galactic Cartesian (pc)
x = 0.953 · y = -0.269 · z = -0.141
Equatorial (J2000)
RA 344.22236° · Dec -8.11975°
Galactic ℓ, b
62.619° · -56.897°
Ecliptic λ, β
342.345° · -1.290°
HTM-20 index
1780737611
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