Key parameters at a glance
- A radius of 14.36 Earth radii
- A mass of 308.29 Earth masses
- Surface gravity around 1.50 g
- An orbital period of 3.566 days
- Semi-major axis 0.0492 AU
- Equilibrium temperature 1,673 K (1400 °C)
- Distance from Earth 1,771.05 light-years
- Earth Similarity Index 0.072
- Travel time at Voyager 1 speed 31,232,521 years
TOI-4794 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#295of 1771
top 16.6%
This planet
14.36R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-4794 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.36 | 11.21 |
| Mass (M⊕) | 1.00 | 308.29 | 317.83 |
| Density (g/cm³) | 5.51 | 0.57 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.50 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,310.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 308.294 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 95589845
Gaia DR2
Gaia DR2 3034394776886475520
Gaia DR3
Gaia DR3 3034394776886475520
System
TOI-4794
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.57 Earth days (1.0% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0492 AU.
Transit Fingerprint
Depth
0.823 %
Duration
4.015 h
Impact parameter b
0.180
Transit midpoint (BJD)
2,458,889.6895
Photometric dip
Transit produces a flux drop of 8,230 ppm lasting ≈ 4.02 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
7.320
Impact parameter (b)
0.180
RV semi-amplitude (K)
111.000 m/s
Transit mid-time (BJD)
2,458,889.6895
Angular separation (arcsec)
0.09060
Eq. Temperature
1,673K
(1400 °C)
Insolation (S⊕)
1,310.00
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-4794
Spectral Class
F-type yellow-white
Effective Temperature
6,390 K — hotter than the Sun (5,778 K)
Estimated Age
2.70 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.451 R☉
Stellar Mass
1.250 M☉
Metallicity [Fe/H]
-0.10
Extended Stellar Properties
Surface gravity (log g)
4.215 dex
Stellar density
0.583 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.814 mas
Total Proper Motion
14.666 mas/yr
PM Right Ascension
-14.43 mas/yr
PM Declination
-2.60 mas/yr
Galactic Cartesian (pc)
x = -0.342 · y = 0.914 · z = -0.218
Equatorial (J2000)
RA 110.48355° · Dec -12.56548°
Galactic ℓ, b
227.569° · 0.919°
Ecliptic λ, β
114.414° · -34.285°
HTM-20 index
1844008381
Similar Worlds
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