Key parameters at a glance
- A radius of 1.76 Earth radii
- A mass of 3.75 Earth masses
- Surface gravity around 1.21 g
- An orbital period of 14.010 days
- Semi-major axis 0.0782 AU
- Equilibrium temperature 337 K (64 °C)
- Distance from Earth 90.71 light-years
- Earth Similarity Index 0.778
- Travel time at Voyager 1 speed 1,599,697 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around TOI-5799
TOI-5799 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-5799 b | Super-Earth | 1.73 | 3.65 | 4.165 | 505 | 2024 |
| TOI-5799 c this | Super-Earth | 1.76 | 3.75 | 14.010 | 337 | 2025 |
TOI-5799 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#315of 1176
top 26.7%
This planet
1.76R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | TOI-5799 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.76 | 11.21 |
| Mass (M⊕) | 1.00 | 3.75 | 317.83 |
| Density (g/cm³) | 5.51 | 3.78 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.21 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 328081248
Gaia DR2
Gaia DR2 1807887150930343424
Gaia DR3
Gaia DR3 1807887150930343424
System
TOI-5799
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 14.01 Earth days (3.8% of a terrestrial year) at a mean orbital distance of 0.0782 AU.
Transit Fingerprint
Duration
1.730 h
Impact parameter b
0.624
Rp / R★
0.050100
Transit midpoint (BJD)
2,460,383.0352
Extended Orbital Architecture
Planet / star radius ratio
0.050100
Semi-major axis / stellar radius
52.300
Impact parameter (b)
0.624
Transit mid-time (BJD)
2,460,383.0352
Angular separation (arcsec)
2.81000
Eq. Temperature
337K
(64 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.778
0 = alien, 1 = Earth-identical
Insufficient insolation data — liquid water is physically possible with adequate atmospheric pressure. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Yalcinkaya et al. 2025Instrument
TESS CCD Array
Publication
2025-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5799
Spectral Class
M-type red dwarf
Effective Temperature
3,452 K — cooler than the Sun (5,778 K)
Estimated Age
9.60 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.321 R☉
Stellar Mass
0.325 M☉
Metallicity [Fe/H]
0.01
Extended Stellar Properties
Surface gravity (log g)
4.936 dex
Stellar density
13.800 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 7 bands
Astrometric Data
Parallax
35.926 mas
Total Proper Motion
301.977 mas/yr
PM Right Ascension
177.64 mas/yr
PM Declination
244.21 mas/yr
Galactic Cartesian (pc)
x = 0.504 · y = -0.819 · z = 0.275
Equatorial (J2000)
RA 301.63018° · Dec 15.98914°
Galactic ℓ, b
55.924° · -8.610°
Ecliptic λ, β
308.164° · 35.332°
HTM-20 index
1523836595
Similar Worlds
G 264-012 c
Super-Earth · M-type red dwarf
Radius 1.76 R⊕ · 52.2 ly
TOI-1634 b
Super-Earth · M-type red dwarf
Radius 1.76 R⊕ · 115.0 ly
TOI-4529 b
Super-Earth · M-type red dwarf
Radius 1.77 R⊕ · 92.6 ly
GJ 667 C c
Super-Earth · M-type red dwarf
Radius 1.77 R⊕ · 23.6 ly
TOI-5713 b
Super-Earth · M-type red dwarf
Radius 1.77 R⊕ · 133.3 ly
TOI-2267 d
Super-Earth · M-type red dwarf
Radius 1.77 R⊕ · 73.5 ly