Key parameters at a glance
- A radius of 15.28 Earth radii
- A mass of 260.62 Earth masses
- Surface gravity around 1.12 g
- An orbital period of 4.335 days
- Semi-major axis 0.0535 AU
- Equilibrium temperature 1,531 K (1258 °C)
- Distance from Earth 1,361.26 light-years
- Earth Similarity Index 0.074
- Travel time at Voyager 1 speed 24,005,836 years
TOI-3894 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#211of 1771
top 11.9%
This planet
15.28R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-3894 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 15.28 | 11.21 |
| Mass (M⊕) | 1.00 | 260.62 | 317.83 |
| Density (g/cm³) | 5.51 | 0.40 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.12 | 2.53 |
| Insolation (S⊕) | 1.00 | 546.90 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 260.619 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 165464482
Gaia DR2
Gaia DR2 1562935820172427392
Gaia DR3
Gaia DR3 1562935820172427392
System
TOI-3894
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.33 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0535 AU.
Transit Fingerprint
Depth
0.898 %
Duration
3.595 h
Impact parameter b
0.700
Rp / R★
0.093020
Transit midpoint (BJD)
2,459,250.5078
Photometric dip
Transit produces a flux drop of 8,978 ppm lasting ≈ 3.60 h.
Extended Orbital Architecture
Planet / star radius ratio
0.093020
Semi-major axis / stellar radius
7.630
Impact parameter (b)
0.700
RV semi-amplitude (K)
96.000 m/s
Transit mid-time (BJD)
2,459,250.5078
Long. of periastron (ω)
108.00°
Angular separation (arcsec)
0.12800
Eq. Temperature
1,531K
(1258 °C)
Insolation (S⊕)
546.90
Earth = 1.00
Earth Similarity (ESI)
0.074
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
Schulte et al. 2024Instrument
TESS CCD Array
Publication
2024-07
Observation locale
Space
Discovery cohort
Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-3894
Spectral Class
F-type yellow-white
Effective Temperature
6,000 K — hotter than the Sun (5,778 K)
Estimated Age
5.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.502 R☉
Stellar Mass
1.138 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.143 dex
Stellar density
0.475 g/cm³
Rotational v·sin i
5.27 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.367 mas
Total Proper Motion
12.364 mas/yr
PM Right Ascension
-8.94 mas/yr
PM Declination
8.54 mas/yr
Galactic Cartesian (pc)
x = -0.563 · y = -0.221 · z = 0.796
Equatorial (J2000)
RA 201.37483° · Dec 52.76810°
Galactic ℓ, b
111.314° · 63.585°
Ecliptic λ, β
168.520° · 54.906°
HTM-20 index
265274497
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