Key parameters at a glance
- A radius of 13.20 Earth radii
- A mass of 224.00 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 2.652 days
- Semi-major axis 0.0260 AU
- Equilibrium temperature 593 K (320 °C)
- Distance from Earth 411.37 light-years
- Earth Similarity Index 0.223
- Travel time at Voyager 1 speed 7,254,466 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-7149 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#847of 1771
top 47.8%
This planet
13.20R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-7149 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.20 | 11.21 |
| Mass (M⊕) | 1.00 | 224.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.53 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 20.60 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 224.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 459323923
Gaia DR2
Gaia DR2 1200751810900182400
Gaia DR3
Gaia DR3 1200751810900182400
System
TOI-7149
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.65 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0260 AU.
Transit Fingerprint
Depth
12.619 %
Duration
1.726 h
Rp / R★
0.333400
Transit midpoint (BJD)
2,459,703.5961
Photometric dip
Transit produces a flux drop of 126,188 ppm lasting ≈ 1.73 h.
Extended Orbital Architecture
Planet / star radius ratio
0.333400
Semi-major axis / stellar radius
15.520
RV semi-amplitude (K)
216.000 m/s
Transit mid-time (BJD)
2,459,703.5961
Long. of periastron (ω)
-16.40°
Angular separation (arcsec)
0.20600
Eq. Temperature
593K
(320 °C)
Insolation (S⊕)
20.60
Earth = 1.00
Earth Similarity (ESI)
0.223
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
Kanodia et al. 2025Instrument
TESS CCD Array
Publication
2025-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-7149
Spectral Class
M-type red dwarf
Effective Temperature
3,363 K — cooler than the Sun (5,778 K)
Estimated Age
7.80 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.351 R☉
Stellar Mass
0.344 M☉
Metallicity [Fe/H]
-0.08
Extended Stellar Properties
Surface gravity (log g)
4.880 dex
Stellar density
11.200 g/cm³
Rotational v·sin i
2.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
7.901 mas
Total Proper Motion
15.034 mas/yr
PM Right Ascension
-7.76 mas/yr
PM Declination
12.88 mas/yr
Galactic Cartesian (pc)
x = -0.403 · y = -0.854 · z = 0.328
Equatorial (J2000)
RA 244.73847° · Dec 19.17581°
Galactic ℓ, b
34.971° · 41.967°
Ecliptic λ, β
238.313° · 39.877°
HTM-20 index
1300428449
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