Key parameters at a glance
- A radius of 1.80 Earth radii
- A mass of 3.89 Earth masses
- Surface gravity around 1.20 g
- An orbital period of 1.306 days
- Semi-major axis 0.0202 AU
- Equilibrium temperature 1,117 K (844 °C)
- Distance from Earth 93.00 light-years
- Earth Similarity Index 0.249
- Travel time at Voyager 1 speed 1,640,097 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-2427 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#253of 1176
top 21.4%
This planet
1.80R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | TOI-2427 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.80 | 11.21 |
| Mass (M⊕) | 1.00 | 3.89 | 317.83 |
| Density (g/cm³) | 5.51 | 3.67 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.20 | 2.53 |
| Insolation (S⊕) | 1.00 | 62.71 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 142937186
Gaia DR2
Gaia DR2 5055663973297050624
Gaia DR3
Gaia DR3 5055663973297050624
System
TOI-2427
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.31 Earth days (0.4% of a terrestrial year) at a mean orbital distance of 0.0202 AU.
Transit Fingerprint
Depth
0.056 %
Duration
0.634 h
Impact parameter b
0.870
Transit midpoint (BJD)
2,459,169.6202
Photometric dip
Transit produces a flux drop of 560 ppm lasting ≈ 0.63 h.
Eq. Temperature
1,117K
(844 °C)
Insolation (S⊕)
62.71
Earth = 1.00
Earth Similarity (ESI)
0.249
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Giacalone et al. 2022Instrument
TESS CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2427
Spectral Class
K-type orange
Effective Temperature
4,072 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.650 R☉
Stellar Mass
0.640 M☉
Metallicity [Fe/H]
—
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
35.041 mas
Total Proper Motion
156.041 mas/yr
PM Right Ascension
150.45 mas/yr
PM Declination
41.39 mas/yr
Galactic Cartesian (pc)
x = 0.522 · y = 0.676 · z = -0.520
Equatorial (J2000)
RA 52.29173° · Dec -31.36287°
Galactic ℓ, b
229.608° · -55.516°
Ecliptic λ, β
38.317° · -48.264°
HTM-20 index
1017863384
Similar Worlds
K2-155 b
Super-Earth · K-type orange
Radius 1.80 R⊕ · 237.4 ly
Kepler-1353 b
Super-Earth · K-type orange
Radius 1.80 R⊕ · 1,935.4 ly
Kepler-1794 b
Super-Earth · K-type orange
Radius 1.79 R⊕ · 1,830.5 ly
Kepler-305 e
Super-Earth · K-type orange
Radius 1.79 R⊕ · 2,832.6 ly
TOI-1075 b
Super-Earth · K-type orange
Radius 1.79 R⊕ · 200.5 ly
Kepler-768 b
Super-Earth · K-type orange
Radius 1.79 R⊕ · 2,558.9 ly