Key parameters at a glance
- A radius of 10.92 Earth radii
- A mass of 61.66 Earth masses
- Surface gravity around 0.52 g
- An orbital period of 6.236 days
- Semi-major axis 0.0740 AU
- Equilibrium temperature 1,468 K (1195 °C)
- Distance from Earth 1,836.48 light-years
- Earth Similarity Index 0.078
- Travel time at Voyager 1 speed 32,386,324 years
TOI-4734 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1671of 1771
top 94.3%
This planet
10.92R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-4734 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.92 | 11.21 |
| Mass (M⊕) | 1.00 | 61.66 | 317.83 |
| Density (g/cm³) | 5.51 | 0.26 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.52 | 2.53 |
| Insolation (S⊕) | 1.00 | 775.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 61.659 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 97714451
Gaia DR2
Gaia DR2 3343402074506386176
Gaia DR3
Gaia DR3 3343402074506386176
System
TOI-4734
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.24 Earth days (1.7% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0740 AU.
Transit Fingerprint
Depth
0.291 %
Duration
5.813 h
Impact parameter b
0.120
Transit midpoint (BJD)
2,459,710.2380
Photometric dip
Transit produces a flux drop of 2,908 ppm lasting ≈ 5.81 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
8.590
Impact parameter (b)
0.120
RV semi-amplitude (K)
17.300 m/s
Transit mid-time (BJD)
2,459,710.2380
Angular separation (arcsec)
0.13100
Eq. Temperature
1,468K
(1195 °C)
Insolation (S⊕)
775.00
Earth = 1.00
Earth Similarity (ESI)
0.078
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-4734
Spectral Class
F-type yellow-white
Effective Temperature
6,070 K — hotter than the Sun (5,778 K)
Estimated Age
3.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.857 R☉
Stellar Mass
1.391 M☉
Metallicity [Fe/H]
0.29
Extended Stellar Properties
Surface gravity (log g)
4.046 dex
Stellar density
0.309 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.750 mas
Total Proper Motion
5.432 mas/yr
PM Right Ascension
-1.64 mas/yr
PM Declination
-5.18 mas/yr
Galactic Cartesian (pc)
x = -0.006 · y = 0.976 · z = 0.217
Equatorial (J2000)
RA 90.35812° · Dec 12.54788°
Galactic ℓ, b
196.023° · -5.105°
Ecliptic λ, β
90.352° · -10.891°
HTM-20 index
883303076
Similar Worlds
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