Key parameters at a glance
- A radius of 10.73 Earth radii
- A mass of 82.00 Earth masses
- Surface gravity around 0.71 g
- An orbital period of 4.566 days
- Semi-major axis 0.0557 AU
- Equilibrium temperature 1,286 K (1013 °C)
- Distance from Earth 985.27 light-years
- Earth Similarity Index 0.098
- Travel time at Voyager 1 speed 17,375,264 years
TOI-5210 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1704of 1771
top 96.2%
This planet
10.73R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5210 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.73 | 11.21 |
| Mass (M⊕) | 1.00 | 82.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.36 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.71 | 2.53 |
| Insolation (S⊕) | 1.00 | 456.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 82.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 265979849
Gaia DR2
Gaia DR2 1838769198425933568
Gaia DR3
Gaia DR3 1838769198425933568
System
TOI-5210
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.57 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0557 AU.
Transit Fingerprint
Depth
0.662 %
Duration
3.710 h
Impact parameter b
0.240
Transit midpoint (BJD)
2,459,854.9087
Photometric dip
Transit produces a flux drop of 6,620 ppm lasting ≈ 3.71 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
9.930
Impact parameter (b)
0.240
RV semi-amplitude (K)
29.700 m/s
Transit mid-time (BJD)
2,459,854.9087
Angular separation (arcsec)
0.18400
Eq. Temperature
1,286K
(1013 °C)
Insolation (S⊕)
456.00
Earth = 1.00
Earth Similarity (ESI)
0.098
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
Yee et al. 2025Instrument
TESS CCD Array
Publication
2025-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5210
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,723 K — cooler than the Sun (5,778 K)
Estimated Age
5.30 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.209 R☉
Stellar Mass
1.105 M☉
Metallicity [Fe/H]
0.32
Extended Stellar Properties
Surface gravity (log g)
4.319 dex
Stellar density
0.888 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.282 mas
Total Proper Motion
23.549 mas/yr
PM Right Ascension
23.30 mas/yr
PM Declination
3.44 mas/yr
Galactic Cartesian (pc)
x = 0.648 · y = -0.664 · z = 0.374
Equatorial (J2000)
RA 314.31692° · Dec 21.95021°
Galactic ℓ, b
67.902° · -15.090°
Ecliptic λ, β
324.615° · 37.368°
HTM-20 index
-373841527
Similar Worlds
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