Key parameters at a glance
- A radius of 11.98 Earth radii
- A mass of 921.70 Earth masses
- Surface gravity around 6.42 g
- An orbital period of 30.159 days
- Semi-major axis 0.2157 AU
- Equilibrium temperature 976 K (703 °C)
- Distance from Earth 1,279.38 light-years
- Earth Similarity Index 0.176
- Travel time at Voyager 1 speed 22,561,799 years
TOI-5110 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1519of 1771
top 85.7%
This planet
11.98R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-5110 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.98 | 11.21 |
| Mass (M⊕) | 1.00 | 921.70 | 317.83 |
| Density (g/cm³) | 5.51 | 2.95 | 1.33 |
| Surface Gravity (g) | 1.00 | 6.42 | 2.53 |
| Insolation (S⊕) | 1.00 | 15.10 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 921.702 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 918.524 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 239977528
Gaia DR2
Gaia DR2 3439633221952197120
Gaia DR3
Gaia DR3 3439633221952197120
System
TOI-5110
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 30.16 Earth days (8.3% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.2157 AU.
Transit Fingerprint
Depth
0.222 %
Duration
4.217 h
Impact parameter b
0.430
Rp / R★
0.047090
Transit midpoint (BJD)
2,459,503.6790
Photometric dip
Transit produces a flux drop of 2,217 ppm lasting ≈ 4.22 h.
Extended Orbital Architecture
Planet / star radius ratio
0.047090
Impact parameter (b)
0.430
RV semi-amplitude (K)
218.400 m/s
Transit mid-time (BJD)
2,459,503.6790
Long. of periastron (ω)
92.20°
Angular separation (arcsec)
0.55000
Eq. Temperature
976K
(703 °C)
Insolation (S⊕)
15.10
Earth = 1.00
Earth Similarity (ESI)
0.176
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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
Heidari et al. 2024Instrument
TESS CCD Array
Publication
2025-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5110
Spectral Class
F-type yellow-white
Effective Temperature
6,160 K — hotter than the Sun (5,778 K)
Estimated Age
4.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.333 R☉
Stellar Mass
1.469 M☉
Metallicity [Fe/H]
0.07
Extended Stellar Properties
Surface gravity (log g)
3.869 dex
Stellar density
0.163 g/cm³
Rotational v·sin i
2.30 km/s
Rotation period
14.00 days
Activity index (log R'HK)
-5.200
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.522 mas
Total Proper Motion
6.540 mas/yr
PM Right Ascension
-6.30 mas/yr
PM Declination
-1.76 mas/yr
Galactic Cartesian (pc)
x = -0.065 · y = 0.849 · z = 0.524
Equatorial (J2000)
RA 94.40427° · Dec 31.61033°
Galactic ℓ, b
181.069° · 7.328°
Ecliptic λ, β
93.785° · 8.229°
HTM-20 index
-301648689
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