Key parameters at a glance
- A radius of 3.56 Earth radii
- A mass of 12.40 Earth masses
- Surface gravity around 0.98 g
- An orbital period of 6.234 days
- Semi-major axis 0.0439 AU
- Equilibrium temperature 378 K (105 °C)
- Distance from Earth 217.84 light-years
- Earth Similarity Index 0.544
- Travel time at Voyager 1 speed 3,841,613 years
- Almost certainly tidally locked to its host star given the close orbit
Context from the literature
The list of exoplanets detected by the Transiting Exoplanet Survey Satellite (TESS) contains bodies with a wide variety of properties, with significant ranges in orbital distances, masses, radii, composition, habitability, and host star type. As of 17 September 2025, the TESS Mission has detected 8,361 planets and confirmed 693 planets, including hot Jupiters, super-Earths, circumbinary planets, and planets located in the circumstellar habitable zones of their host stars. TESS has detected over 7,668 unconfirmed planet candidates.
Excerpted from Wikipedia · full article
TOI-7384 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#151of 1978
top 7.6%
This planet
3.56R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-7384 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.56 | 11.21 |
| Mass (M⊕) | 1.00 | 12.40 | 317.83 |
| Density (g/cm³) | 5.51 | 1.51 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.98 | 2.53 |
| Insolation (S⊕) | 1.00 | 4.90 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 192833836
Gaia DR2
Gaia DR2 4808732662634331520
Gaia DR3
Gaia DR3 4808732662634331520
System
TOI-7384
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.23 Earth days (1.7% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0439 AU.
Transit Fingerprint
Depth
1.390 %
Duration
1.452 h
Impact parameter b
0.611
Rp / R★
0.102380
Transit midpoint (BJD)
2,459,565.1011
Photometric dip
Transit produces a flux drop of 13,899 ppm lasting ≈ 1.45 h.
Extended Orbital Architecture
Planet / star radius ratio
0.102380
Semi-major axis / stellar radius
29.700
Impact parameter (b)
0.611
Transit mid-time (BJD)
2,459,565.1011
Angular separation (arcsec)
0.65700
Eq. Temperature
378K
(105 °C)
Insolation (S⊕)
4.90
Earth = 1.00
Earth Similarity (ESI)
0.544
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.
Discovery Paper
Primary reference
Scott et al. 2026Instrument
TESS CCD Array
Publication
2026-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2026 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-7384
Spectral Class
M-type red dwarf
Effective Temperature
3,185 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.319 R☉
Stellar Mass
0.318 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
4.930 dex
Stellar density
12.800 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
14.944 mas
Total Proper Motion
111.850 mas/yr
PM Right Ascension
-45.87 mas/yr
PM Declination
-102.01 mas/yr
Galactic Cartesian (pc)
x = 0.092 · y = 0.762 · z = -0.641
Equatorial (J2000)
RA 83.10318° · Dec -39.83425°
Galactic ℓ, b
244.940° · -31.540°
Ecliptic λ, β
78.280° · -62.993°
HTM-20 index
1165089270
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