Key parameters at a glance
- A radius of 1.87 Earth radii
- A mass of 18.10 Earth masses
- Surface gravity around 5.15 g
- An orbital period of 20.226 days
- Semi-major axis 0.1362 AU
- Equilibrium temperature 497 K (224 °C)
- Distance from Earth 195.24 light-years
- Earth Similarity Index 0.462
- Travel time at Voyager 1 speed 3,443,061 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around TOI-2322
TOI-2322 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-2322 b | Rocky Terrestrial | 0.99 | 2.31 | 11.307 | 603 | 2025 |
| TOI-2322 c this | Super-Earth | 1.87 | 18.10 | 20.226 | 497 | 2025 |
TOI-2322 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#168of 1176
top 14.2%
This planet
1.87R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | TOI-2322 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.87 | 11.21 |
| Mass (M⊕) | 1.00 | 18.10 | 317.83 |
| Density (g/cm³) | 5.51 | 14.69 | 1.33 |
| Surface Gravity (g) | 1.00 | 5.15 | 2.53 |
| Insolation (S⊕) | 1.00 | 10.15 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 18.100 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 300812741
Gaia DR2
Gaia DR2 5264331179802870016
Gaia DR3
Gaia DR3 5264331179802870016
System
TOI-2322
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 20.23 Earth days (5.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1362 AU.
Transit Fingerprint
Depth
0.071 %
Duration
2.307 h
Impact parameter b
0.787
Transit midpoint (BJD)
2,459,037.4161
Photometric dip
Transit produces a flux drop of 712 ppm lasting ≈ 2.31 h.
Extended Orbital Architecture
Impact parameter (b)
0.787
RV semi-amplitude (K)
5.370 m/s
Transit mid-time (BJD)
2,459,037.4161
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
2.28000
Eq. Temperature
497K
(224 °C)
Insolation (S⊕)
10.15
Earth = 1.00
Earth Similarity (ESI)
0.462
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
Hobson et al. 2025Instrument
TESS CCD Array
Publication
2025-08
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2322
Spectral Class
K-type orange
Effective Temperature
4,664 K — cooler than the Sun (5,778 K)
Estimated Age
3.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.662 R☉
Stellar Mass
0.703 M☉
Metallicity [Fe/H]
-0.12
Extended Stellar Properties
Surface gravity (log g)
4.570 dex
Stellar density
2.908 g/cm³
Rotation period
21.28 days
Activity index (log R'HK)
-4.587
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
16.676 mas
Total Proper Motion
53.887 mas/yr
PM Right Ascension
7.87 mas/yr
PM Declination
-53.31 mas/yr
Galactic Cartesian (pc)
x = -0.148 · y = 0.290 · z = -0.946
Equatorial (J2000)
RA 116.97310° · Dec -71.00197°
Galactic ℓ, b
283.148° · -21.131°
Ecliptic λ, β
216.663° · -79.392°
HTM-20 index
-1385900094
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TOI-286 c
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