Key parameters at a glance
- A radius of 10.60 Earth radii
- A mass of 130.95 Earth masses
- Surface gravity around 1.16 g
- An orbital period of 3.793 days
- Semi-major axis 0.0404 AU
- Equilibrium temperature 689 K (416 °C)
- Distance from Earth 451.29 light-years
- Earth Similarity Index 0.209
- Travel time at Voyager 1 speed 7,958,539 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5344 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1713of 1771
top 96.7%
This planet
10.60R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5344 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.60 | 11.21 |
| Mass (M⊕) | 1.00 | 130.95 | 317.83 |
| Density (g/cm³) | 5.51 | 0.60 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.16 | 2.53 |
| Insolation (S⊕) | 1.00 | 38.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 130.945 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 16005254
Gaia DR2
Gaia DR2 52359538285081728
Gaia DR3
Gaia DR3 52359538285081728
System
TOI-5344
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.79 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0404 AU.
Transit Fingerprint
Depth
2.444 %
Duration
1.773 h
Impact parameter b
0.735
Rp / R★
0.165300
Transit midpoint (BJD)
2,459,848.9903
Photometric dip
Transit produces a flux drop of 24,440 ppm lasting ≈ 1.77 h.
Extended Orbital Architecture
Planet / star radius ratio
0.165300
Semi-major axis / stellar radius
14.780
Impact parameter (b)
0.735
RV semi-amplitude (K)
74.400 m/s
Transit mid-time (BJD)
2,459,848.9903
Long. of periastron (ω)
95.00°
Angular separation (arcsec)
0.29200
Eq. Temperature
689K
(416 °C)
Insolation (S⊕)
38.00
Earth = 1.00
Earth Similarity (ESI)
0.209
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
Hartman et al. 2023Instrument
TESS CCD Array
Publication
2023-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5344
Spectral Class
K-type orange
Effective Temperature
3,747 K — cooler than the Sun (5,778 K)
Estimated Age
10.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.588 R☉
Stellar Mass
0.612 M☉
Metallicity [Fe/H]
0.43
Extended Stellar Properties
Surface gravity (log g)
4.686 dex
Stellar density
4.240 g/cm³
Systemic radial velocity
46.78 km/s
Rotational v·sin i
2.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
7.199 mas
Total Proper Motion
45.916 mas/yr
PM Right Ascension
40.29 mas/yr
PM Declination
-22.02 mas/yr
Galactic Cartesian (pc)
x = 0.420 · y = 0.834 · z = 0.357
Equatorial (J2000)
RA 63.26622° · Dec 20.91516°
Galactic ℓ, b
173.631° · -21.535°
Ecliptic λ, β
65.148° · -0.248°
HTM-20 index
-782185935
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