Key parameters at a glance
- A radius of 10.20 Earth radii
- A mass of 127.40 Earth masses
- Surface gravity around 1.22 g
- An orbital period of 3.318 days
- Semi-major axis 0.0369 AU
- Equilibrium temperature 719 K (446 °C)
- Distance from Earth 614.27 light-years
- Earth Similarity Index 0.206
- Travel time at Voyager 1 speed 10,832,636 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5349 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1751of 1771
top 98.8%
This planet
10.20R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5349 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.20 | 11.21 |
| Mass (M⊕) | 1.00 | 127.40 | 317.83 |
| Density (g/cm³) | 5.51 | 0.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.22 | 2.53 |
| Insolation (S⊕) | 1.00 | 44.50 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 127.400 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 26054627
Gaia DR2
Gaia DR2 58372904816938240
Gaia DR3
Gaia DR3 58372904816938240
System
TOI-5349
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.32 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0369 AU.
Transit Fingerprint
Depth
2.501 %
Duration
1.950 h
Impact parameter b
0.510
Rp / R★
0.161000
Transit midpoint (BJD)
2,459,521.8184
Photometric dip
Transit produces a flux drop of 25,010 ppm lasting ≈ 1.95 h.
Extended Orbital Architecture
Planet / star radius ratio
0.161000
Semi-major axis / stellar radius
13.600
Impact parameter (b)
0.510
RV semi-amplitude (K)
76.200 m/s
Transit mid-time (BJD)
2,459,521.8184
Long. of periastron (ω)
-50.00°
Angular separation (arcsec)
0.19600
Eq. Temperature
719K
(446 °C)
Insolation (S⊕)
44.50
Earth = 1.00
Earth Similarity (ESI)
0.206
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
Sandoval et al. 2026Instrument
TESS CCD Array
Publication
2026-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2026 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5349
Spectral Class
M-type red dwarf
Effective Temperature
3,751 K — cooler than the Sun (5,778 K)
Estimated Age
9.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.580 R☉
Stellar Mass
0.610 M☉
Metallicity [Fe/H]
0.50
Extended Stellar Properties
Surface gravity (log g)
4.720 dex
Stellar density
4.400 g/cm³
Systemic radial velocity
40.42 km/s
Rotational v·sin i
2.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.282 mas
Total Proper Motion
41.893 mas/yr
PM Right Ascension
37.14 mas/yr
PM Declination
-19.38 mas/yr
Galactic Cartesian (pc)
x = 0.566 · y = 0.743 · z = 0.356
Equatorial (J2000)
RA 52.71257° · Dec 20.87963°
Galactic ℓ, b
165.834° · -28.415°
Ecliptic λ, β
55.503° · 1.794°
HTM-20 index
-688117910
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