Key parameters at a glance
- A radius of 11.21 Earth radii
- A mass of 1,900.61 Earth masses
- Surface gravity around 15.13 g
- An orbital period of 22.654 days
- Semi-major axis 0.1580 AU
- Equilibrium temperature 799 K (526 °C)
- Distance from Earth 1,024.12 light-years
- Earth Similarity Index 0.217
- Travel time at Voyager 1 speed 18,060,299 years
TOI-2338 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1633of 1771
top 92.2%
This planet
11.21R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2338 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.21 | 11.21 |
| Mass (M⊕) | 1.00 | 1,900.61 | 317.83 |
| Density (g/cm³) | 5.51 | 7.42 | 1.33 |
| Surface Gravity (g) | 1.00 | 15.13 | 2.53 |
| Insolation (S⊕) | 1.00 | 13.85 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,900.614 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 24358417
Gaia DR2
Gaia DR2 4822916912388338176
Gaia DR3
Gaia DR3 4822916912388338176
System
TOI-2338
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 22.65 Earth days (6.2% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.1580 AU.
Transit Fingerprint
Depth
1.153 %
Duration
3.468 h
Impact parameter b
0.260
Rp / R★
0.098000
Transit midpoint (BJD)
2,458,458.7545
Photometric dip
Transit produces a flux drop of 11,530 ppm lasting ≈ 3.47 h.
Extended Orbital Architecture
Planet / star radius ratio
0.098000
Semi-major axis / stellar radius
32.300
Impact parameter (b)
0.260
RV semi-amplitude (K)
584.000 m/s
Transit mid-time (BJD)
2,458,458.7545
Long. of periastron (ω)
12.60°
Angular separation (arcsec)
0.50300
Eq. Temperature
799K
(526 °C)
Insolation (S⊕)
13.85
Earth = 1.00
Earth Similarity (ESI)
0.217
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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
Brahm et al. 2023Instrument
TESS CCD Array
Publication
2023-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2338
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,581 K — cooler than the Sun (5,778 K)
Estimated Age
7.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.050 R☉
Stellar Mass
0.990 M☉
Metallicity [Fe/H]
0.22
Extended Stellar Properties
Surface gravity (log g)
4.400 dex
Stellar density
1.301 g/cm³
Rotational v·sin i
2.50 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.156 mas
Total Proper Motion
42.057 mas/yr
PM Right Ascension
38.00 mas/yr
PM Declination
18.02 mas/yr
Galactic Cartesian (pc)
x = 0.124 · y = 0.813 · z = -0.569
Equatorial (J2000)
RA 81.34458° · Dec -34.66825°
Galactic ℓ, b
238.660° · -31.858°
Ecliptic λ, β
76.601° · -57.706°
HTM-20 index
1231891657
Similar Worlds
TIC 279401253 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.21 R⊕ · 931.4 ly
TOI-2524 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.21 R⊕ · 1,431.3 ly
WASP-34 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.21 R⊕ · 430.8 ly
Kepler-68 e
Gas Giant · G-type yellow (Sun-like)
Radius 11.20 R⊕ · 470.2 ly
WASP-157 b
Gas Giant · G-type yellow (Sun-like)
Radius 11.19 R⊕ · 1,089.5 ly
Kepler-289 c
Gas Giant · G-type yellow (Sun-like)
Radius 11.23 R⊕ · 2,297.6 ly