Key parameters at a glance
- A radius of 13.09 Earth radii
- A mass of 1,182.32 Earth masses
- Surface gravity around 6.90 g
- An orbital period of 5.859 days
- Semi-major axis 0.0730 AU
- Equilibrium temperature 1,648 K (1375 °C)
- Distance from Earth 2,052.05 light-years
- Earth Similarity Index 0.094
- Travel time at Voyager 1 speed 36,187,835 years
TOI-5301 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#950of 1771
top 53.6%
This planet
13.09R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5301 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.09 | 11.21 |
| Mass (M⊕) | 1.00 | 1,182.32 | 317.83 |
| Density (g/cm³) | 5.51 | 2.88 | 1.33 |
| Surface Gravity (g) | 1.00 | 6.90 | 2.53 |
| Insolation (S⊕) | 1.00 | 429.79 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,182.322 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 58825110
Gaia DR2
Gaia DR2 2776823148594090752
Gaia DR3
Gaia DR3 2776823148594090752
System
TOI-5301
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.86 Earth days (1.6% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0730 AU.
Transit Fingerprint
Depth
0.325 %
Duration
3.938 h
Impact parameter b
0.600
Rp / R★
0.055100
Transit midpoint (BJD)
2,459,277.3698
Photometric dip
Transit produces a flux drop of 3,250 ppm lasting ≈ 3.94 h.
Extended Orbital Architecture
Planet / star radius ratio
0.055100
Semi-major axis / stellar radius
7.200
Impact parameter (b)
0.600
RV semi-amplitude (K)
336.000 m/s
Transit mid-time (BJD)
2,459,277.3698
Long. of periastron (ω)
75.00°
Angular separation (arcsec)
0.11600
Eq. Temperature
1,648K
(1375 °C)
Insolation (S⊕)
429.79
Earth = 1.00
Earth Similarity (ESI)
0.094
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Schulte et al. 2024Instrument
TESS CCD Array
Publication
2024-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5301
Spectral Class
F-type yellow-white
Effective Temperature
6,240 K — hotter than the Sun (5,778 K)
Estimated Age
2.43 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.190 R☉
Stellar Mass
1.483 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
3.926 dex
Stellar density
0.197 g/cm³
Rotational v·sin i
11.80 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.561 mas
Total Proper Motion
7.927 mas/yr
PM Right Ascension
5.76 mas/yr
PM Declination
-5.44 mas/yr
Galactic Cartesian (pc)
x = 0.949 · y = 0.219 · z = 0.226
Equatorial (J2000)
RA 12.99080° · Dec 13.07837°
Galactic ℓ, b
123.130° · -49.793°
Ecliptic λ, β
17.036° · 6.922°
HTM-20 index
830795543
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