Key parameters at a glance
- A radius of 11.72 Earth radii
- A mass of 1,830.69 Earth masses
- Surface gravity around 13.32 g
- An orbital period of 5.469 days
- Semi-major axis 0.0526 AU
- Equilibrium temperature 624 K (351 °C)
- Distance from Earth 688.99 light-years
- Earth Similarity Index 0.285
- Travel time at Voyager 1 speed 12,150,422 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-2379 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1567of 1771
top 88.4%
This planet
11.72R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2379 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.72 | 11.21 |
| Mass (M⊕) | 1.00 | 1,830.69 | 317.83 |
| Density (g/cm³) | 5.51 | 6.21 | 1.33 |
| Surface Gravity (g) | 1.00 | 13.32 | 2.53 |
| Insolation (S⊕) | 1.00 | 25.30 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,830.692 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 201177276
Gaia DR2
Gaia DR2 6521531466699512064
Gaia DR3
Gaia DR3 6521531466699512064
System
TOI-2379
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.47 Earth days (1.5% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0526 AU.
Transit Fingerprint
Depth
3.241 %
Duration
1.867 h
Impact parameter b
0.242
Rp / R★
0.172900
Transit midpoint (BJD)
2,459,401.5660
Photometric dip
Transit produces a flux drop of 32,412 ppm lasting ≈ 1.87 h.
Extended Orbital Architecture
Planet / star radius ratio
0.172900
Semi-major axis / stellar radius
18.170
Impact parameter (b)
0.242
RV semi-amplitude (K)
1,002.500 m/s
Transit mid-time (BJD)
2,459,401.5660
Long. of periastron (ω)
73.10°
Angular separation (arcsec)
0.24900
Eq. Temperature
624K
(351 °C)
Insolation (S⊕)
25.30
Earth = 1.00
Earth Similarity (ESI)
0.285
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
Bryant et al. 2024Instrument
TESS CCD Array
Publication
2024-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2379
Spectral Class
K-type orange
Effective Temperature
3,707 K — cooler than the Sun (5,778 K)
Estimated Age
10.40 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.622 R☉
Stellar Mass
0.645 M☉
Metallicity [Fe/H]
0.50
Extended Stellar Properties
Surface gravity (log g)
4.653 dex
Stellar density
3.760 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
4.705 mas
Total Proper Motion
16.620 mas/yr
PM Right Ascension
16.53 mas/yr
PM Declination
1.74 mas/yr
Galactic Cartesian (pc)
x = 0.601 · y = -0.020 · z = -0.799
Equatorial (J2000)
RA 358.09205° · Dec -53.04316°
Galactic ℓ, b
321.891° · -61.857°
Ecliptic λ, β
330.767° · -46.484°
HTM-20 index
1750223580
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