Key parameters at a glance
- A radius of 2.48 Earth radii
- A mass of 6.70 Earth masses
- Surface gravity around 1.09 g
- An orbital period of 6.096 days
- Semi-major axis 0.0599 AU
- Equilibrium temperature 737 K (464 °C)
- Distance from Earth 296.38 light-years
- Earth Similarity Index 0.345
- Travel time at Voyager 1 speed 5,226,585 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-1301.01 Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1224of 1978
top 61.8%
This planet
2.48R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | TOI-1301.01 | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.48 | 11.21 |
| Mass (M⊕) | 1.00 | 6.70 | 317.83 |
| Density (g/cm³) | 5.51 | 2.42 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.09 | 2.53 |
| Insolation (S⊕) | 1.00 | 72.55 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 356867115
Gaia DR2
Gaia DR2 2266490873877571712
Gaia DR3
Gaia DR3 2266490873877571712
System
TOI-1301
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.10 Earth days (1.7% of a terrestrial year) at a mean orbital distance of 0.0599 AU.
Transit Fingerprint
Depth
0.114 %
Duration
2.333 h
Rp / R★
0.030800
Transit midpoint (BJD)
2,459,710.2944
Photometric dip
Transit produces a flux drop of 1,143 ppm lasting ≈ 2.33 h.
Eq. Temperature
737K
(464 °C)
Insolation (S⊕)
72.55
Earth = 1.00
Earth Similarity (ESI)
0.345
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
Crossfield et al. 2024Instrument
TESS CCD Array
Publication
2024-11
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1301
Spectral Class
K-type orange
Effective Temperature
4,820 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.732 R☉
Stellar Mass
0.770 M☉
Metallicity [Fe/H]
—
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
10.976 mas
Total Proper Motion
96.149 mas/yr
PM Right Ascension
-43.32 mas/yr
PM Declination
85.84 mas/yr
Galactic Cartesian (pc)
x = 0.032 · y = -0.314 · z = 0.949
Equatorial (J2000)
RA 275.86254° · Dec 71.58175°
Galactic ℓ, b
102.162° · 27.832°
Ecliptic λ, β
70.073° · 84.566°
HTM-20 index
-980875454
Similar Worlds
K2-285 d
Sub-Neptune · K-type orange
Radius 2.48 R⊕ · 505.4 ly
Kepler-1030 b
Sub-Neptune · K-type orange
Radius 2.48 R⊕ · 2,474.6 ly
TOI-712 d
Sub-Neptune · K-type orange
Radius 2.47 R⊕ · 191.2 ly
HIP 97166 b
Sub-Neptune · K-type orange
Radius 2.48 R⊕ · 215.1 ly
Kepler-306 d
Sub-Neptune · K-type orange
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HIP 116454 b
Sub-Neptune · K-type orange
Radius 2.47 R⊕ · 203.7 ly