Key parameters at a glance
- A radius of 14.01 Earth radii
- A mass of 1,872.01 Earth masses
- Surface gravity around 9.54 g
- An orbital period of 101.941 days
- Semi-major axis 0.4160 AU
- Equilibrium temperature 427 K (154 °C)
- Distance from Earth 395.10 light-years
- Earth Similarity Index 0.380
- Travel time at Voyager 1 speed 6,967,625 years
TOI-4465 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#411of 1771
top 23.2%
This planet
14.01R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-4465 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.01 | 11.21 |
| Mass (M⊕) | 1.00 | 1,872.01 | 317.83 |
| Density (g/cm³) | 5.51 | 3.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 9.54 | 2.53 |
| Insolation (S⊕) | 1.00 | 130.53 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,872.009 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 157236902
Gaia DR2
Gaia DR2 4521842556801236352
Gaia DR3
Gaia DR3 4521842556801236352
System
TOI-4465
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 101.94 Earth days (27.9% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.4160 AU.
Transit Fingerprint
Depth
1.352 %
Duration
12.002 h
Impact parameter b
0.080
Rp / R★
0.126800
Transit midpoint (BJD)
2,459,395.1256
Photometric dip
Transit produces a flux drop of 13,520 ppm lasting ≈ 12.00 h.
Extended Orbital Architecture
Planet / star radius ratio
0.126800
Semi-major axis / stellar radius
88.400
Impact parameter (b)
0.080
RV semi-amplitude (K)
277.190 m/s
Transit mid-time (BJD)
2,459,395.1256
Long. of periastron (ω)
279.74°
Angular separation (arcsec)
3.43000
Eq. Temperature
427K
(154 °C)
Insolation (S⊕)
130.53
Earth = 1.00
Earth Similarity (ESI)
0.380
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
Essack 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-4465
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,545 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
1.014 R☉
Stellar Mass
0.930 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.379 dex
Stellar density
1.300 g/cm³
Rotational v·sin i
4.13 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
8.226 mas
Total Proper Motion
69.791 mas/yr
PM Right Ascension
-54.42 mas/yr
PM Declination
43.69 mas/yr
Galactic Cartesian (pc)
x = 0.103 · y = -0.957 · z = 0.273
Equatorial (J2000)
RA 276.13403° · Dec 15.84189°
Galactic ℓ, b
44.271° · 12.988°
Ecliptic λ, β
277.610° · 39.119°
HTM-20 index
1151520605
Similar Worlds
WASP-185 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.01 R⊕ · 911.1 ly
OGLE-TR-10 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.01 R⊕ · 4,386.7 ly
HATS-32 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 2,430.2 ly
HD 360 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 363.8 ly
HD 211810 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 210.8 ly
HD 37124 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.00 R⊕ · 103.3 ly