Key parameters at a glance
- A radius of 11.90 Earth radii
- A mass of 170.40 Earth masses
- Surface gravity around 1.20 g
- An orbital period of 2.930 days
- Semi-major axis 0.0340 AU
- Equilibrium temperature 675 K (402 °C)
- Distance from Earth 529.12 light-years
- Earth Similarity Index 0.204
- Travel time at Voyager 1 speed 9,331,024 years
- Almost certainly tidally locked to its host star given the close orbit
TOI-5293 A b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1526of 1771
top 86.1%
This planet
11.90R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5293 A b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.90 | 11.21 |
| Mass (M⊕) | 1.00 | 170.40 | 317.83 |
| Density (g/cm³) | 5.51 | 0.56 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.20 | 2.53 |
| Insolation (S⊕) | 1.00 | 34.60 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 170.400 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 250111245
Gaia DR2
Gaia DR2 2640121486388076032
Gaia DR3
Gaia DR3 2640121486388076032
System
TOI-5293
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.93 Earth days (0.8% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0340 AU.
Transit Fingerprint
Depth
5.083 %
Duration
1.940 h
Impact parameter b
0.320
Rp / R★
0.210000
Transit midpoint (BJD)
2,459,448.9148
Photometric dip
Transit produces a flux drop of 50,830 ppm lasting ≈ 1.94 h.
Extended Orbital Architecture
Planet / star radius ratio
0.210000
Semi-major axis / stellar radius
14.100
Impact parameter (b)
0.320
RV semi-amplitude (K)
115.600 m/s
Transit mid-time (BJD)
2,459,448.9148
Long. of periastron (ω)
-92.00°
Sky-projected obliquity (λ)
-12.00°
True obliquity (ψ)
24.00°
Angular separation (arcsec)
0.21000
Eq. Temperature
675K
(402 °C)
Insolation (S⊕)
34.60
Earth = 1.00
Earth Similarity (ESI)
0.204
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
Ca Ntilde As et al. 2023Instrument
TESS CCD Array
Publication
2023-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5293 A
Spectral Class
M-type red dwarf
Effective Temperature
3,586 K — cooler than the Sun (5,778 K)
Estimated Age
2.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.520 R☉
Stellar Mass
0.540 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.770 dex
Stellar density
5.400 g/cm³
Systemic radial velocity
8.00 km/s
Rotational v·sin i
2.00 km/s
Rotation period
20.60 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
6.136 mas
Total Proper Motion
16.785 mas/yr
PM Right Ascension
-16.78 mas/yr
PM Declination
0.39 mas/yr
Galactic Cartesian (pc)
x = 0.997 · y = -0.073 · z = -0.036
Equatorial (J2000)
RA 355.82868° · Dec -2.04509°
Galactic ℓ, b
87.005° · -60.076°
Ecliptic λ, β
355.356° · -0.219°
HTM-20 index
-1522617901
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