Key parameters at a glance
- A radius of 12.80 Earth radii
- A mass of 69.29 Earth masses
- Surface gravity around 0.42 g
- An orbital period of 3.346 days
- Semi-major axis 0.0480 AU
- Equilibrium temperature 1,657 K (1384 °C)
- Distance from Earth 1,318.36 light-years
- Earth Similarity Index 0.061
- Travel time at Voyager 1 speed 23,249,250 years
TOI-3682 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1061of 1771
top 59.9%
This planet
12.80R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-3682 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.80 | 11.21 |
| Mass (M⊕) | 1.00 | 69.29 | 317.83 |
| Density (g/cm³) | 5.51 | 0.18 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.42 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,258.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 69.287 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 28961316
Gaia DR2
Gaia DR2 117190351631297152
Gaia DR3
Gaia DR3 117190351631297152
System
TOI-3682
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.35 Earth days (0.9% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0480 AU.
Transit Fingerprint
Depth
0.458 %
Duration
4.176 h
Impact parameter b
0.464
Transit midpoint (BJD)
2,459,692.6592
Photometric dip
Transit produces a flux drop of 4,576 ppm lasting ≈ 4.18 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
5.930
Impact parameter (b)
0.464
RV semi-amplitude (K)
24.800 m/s
Transit mid-time (BJD)
2,459,692.6592
Angular separation (arcsec)
0.11900
Eq. Temperature
1,657K
(1384 °C)
Insolation (S⊕)
1,258.00
Earth = 1.00
Earth Similarity (ESI)
0.061
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-3682
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,703 K — cooler than the Sun (5,778 K)
Estimated Age
4.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.735 R☉
Stellar Mass
1.320 M☉
Metallicity [Fe/H]
0.42
Extended Stellar Properties
Surface gravity (log g)
4.077 dex
Stellar density
0.352 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.446 mas
Total Proper Motion
39.521 mas/yr
PM Right Ascension
34.94 mas/yr
PM Declination
-18.46 mas/yr
Galactic Cartesian (pc)
x = 0.578 · y = 0.695 · z = 0.427
Equatorial (J2000)
RA 50.27523° · Dec 25.29727°
Galactic ℓ, b
160.750° · -26.374°
Ecliptic λ, β
54.426° · 6.630°
HTM-20 index
1673103287
Similar Worlds
NGTS-13 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 2,112.2 ly
TOI-2295 c
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 411.9 ly
HD 75302 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 98.9 ly
HD 72892 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 227.4 ly
HD 132406 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 230.9 ly
HD 11755 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.80 R⊕ · 766.6 ly