Key parameters at a glance
- A radius of 11.29 Earth radii
- A mass of 331.00 Earth masses
- Surface gravity around 2.60 g
- An orbital period of 1.791 days
- Semi-major axis 0.0229 AU
- Equilibrium temperature 745 K (472 °C)
- Distance from Earth 558.77 light-years
- Earth Similarity Index 0.214
- Travel time at Voyager 1 speed 9,853,859 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-6383 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1619of 1771
top 91.4%
This planet
11.29R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-6383 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.29 | 11.21 |
| Mass (M⊕) | 1.00 | 331.00 | 317.83 |
| Density (g/cm³) | 5.51 | 1.26 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.60 | 2.53 |
| Insolation (S⊕) | 1.00 | 51.30 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 331.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 328513434
Gaia DR2
Gaia DR2 473934011733049856
Gaia DR3
Gaia DR3 473934011733049856
System
TOI-6383
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.79 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0229 AU.
Transit Fingerprint
Depth
4.732 %
Duration
1.540 h
Rp / R★
0.224500
Transit midpoint (BJD)
2,459,933.5955
Photometric dip
Transit produces a flux drop of 47,315 ppm lasting ≈ 1.54 h.
Extended Orbital Architecture
Planet / star radius ratio
0.224500
Semi-major axis / stellar radius
10.680
RV semi-amplitude (K)
277.000 m/s
Transit mid-time (BJD)
2,459,933.5955
Long. of periastron (ω)
23.80°
Angular separation (arcsec)
0.13400
Eq. Temperature
745K
(472 °C)
Insolation (S⊕)
51.30
Earth = 1.00
Earth Similarity (ESI)
0.214
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
Bernab & Ograve et al. 2024Instrument
TESS CCD Array
Publication
2024-12
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-6383 A
Spectral Class
M-type red dwarf
Effective Temperature
3,444 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.457 R☉
Stellar Mass
0.458 M☉
Metallicity [Fe/H]
—
Extended Stellar Properties
Surface gravity (log g)
4.810 dex
Stellar density
6.740 g/cm³
Systemic radial velocity
11.90 km/s
Rotational v·sin i
2.00 km/s
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.809 mas
Total Proper Motion
65.669 mas/yr
PM Right Ascension
41.13 mas/yr
PM Declination
-51.19 mas/yr
Galactic Cartesian (pc)
x = 0.240 · y = 0.423 · z = 0.874
Equatorial (J2000)
RA 60.42470° · Dec 60.89137°
Galactic ℓ, b
144.098° · 6.100°
Ecliptic λ, β
71.922° · 39.295°
HTM-20 index
390361033
Similar Worlds
TOI-3714 b
Gas Giant · M-type red dwarf
Radius 11.32 R⊕ · 367.6 ly
TOI-5916 b
Gas Giant · M-type red dwarf
Radius 11.35 R⊕ · 651.4 ly
2MASS J01225093-2439505 b
Gas Giant · M-type red dwarf
Radius 11.21 R⊕ · 110.3 ly
HATS-6 b
Gas Giant · M-type red dwarf
Radius 11.19 R⊕ · 552.2 ly
TOI-3235 b
Gas Giant · M-type red dwarf
Radius 11.40 R⊕ · 237.5 ly
KMT-2016-BLG-1337L b
Gas Giant · M-type red dwarf
Radius 11.40 R⊕ · 22,570.0 ly