Key parameters at a glance
- A radius of 13.14 Earth radii
- A mass of 352.79 Earth masses
- Surface gravity around 2.04 g
- An orbital period of 3.244 days
- Semi-major axis 0.0461 AU
- Equilibrium temperature 1,633 K (1360 °C)
- Distance from Earth 1,820.41 light-years
- Earth Similarity Index 0.081
- Travel time at Voyager 1 speed 32,102,935 years
TOI-3819 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#903of 1771
top 50.9%
This planet
13.14R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-3819 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.14 | 11.21 |
| Mass (M⊕) | 1.00 | 352.79 | 317.83 |
| Density (g/cm³) | 5.51 | 0.85 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.04 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,186.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 352.790 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 95660472
Gaia DR2
Gaia DR2 876608292608416512
Gaia DR3
Gaia DR3 876608292608416512
System
TOI-3819
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.24 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0461 AU.
Transit Fingerprint
Depth
0.613 %
Duration
2.779 h
Impact parameter b
0.808
Transit midpoint (BJD)
2,459,502.7437
Photometric dip
Transit produces a flux drop of 6,130 ppm lasting ≈ 2.78 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
6.430
Impact parameter (b)
0.808
RV semi-amplitude (K)
131.000 m/s
Transit mid-time (BJD)
2,459,502.7437
Angular separation (arcsec)
0.08260
Eq. Temperature
1,633K
(1360 °C)
Insolation (S⊕)
1,186.00
Earth = 1.00
Earth Similarity (ESI)
0.081
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. 2023Instrument
TESS CCD Array
Publication
2023-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-3819
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,859 K — hotter than the Sun (5,778 K)
Estimated Age
4.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.538 R☉
Stellar Mass
1.242 M☉
Metallicity [Fe/H]
0.27
Extended Stellar Properties
Surface gravity (log g)
4.156 dex
Stellar density
0.478 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.763 mas
Total Proper Motion
23.578 mas/yr
PM Right Ascension
-6.04 mas/yr
PM Declination
-22.79 mas/yr
Galactic Cartesian (pc)
x = -0.460 · y = 0.740 · z = 0.491
Equatorial (J2000)
RA 121.86326° · Dec 29.38864°
Galactic ℓ, b
192.471° · 28.443°
Ecliptic λ, β
117.749° · 8.968°
HTM-20 index
-1507657892
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