Key parameters at a glance
- A radius of 12.32 Earth radii
- A mass of 1,233.17 Earth masses
- Surface gravity around 8.13 g
- An orbital period of 7.433 days
- Semi-major axis 0.0795 AU
- Equilibrium temperature 1,198 K (925 °C)
- Distance from Earth 1,971.91 light-years
- Earth Similarity Index 0.142
- Travel time at Voyager 1 speed 34,774,628 years
TOI-3919 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1347of 1771
top 76.0%
This planet
12.32R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-3919 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.32 | 11.21 |
| Mass (M⊕) | 1.00 | 1,233.17 | 317.83 |
| Density (g/cm³) | 5.51 | 3.63 | 1.33 |
| Surface Gravity (g) | 1.00 | 8.13 | 2.53 |
| Insolation (S⊕) | 1.00 | 184.32 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,233.174 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 23769326
Gaia DR2
Gaia DR2 1497132660589966976
Gaia DR3
Gaia DR3 1497132660589966976
System
TOI-3919
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.43 Earth days (2.0% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0795 AU.
Transit Fingerprint
Depth
0.695 %
Duration
3.854 h
Impact parameter b
0.835
Rp / R★
0.085600
Transit midpoint (BJD)
2,459,519.2998
Photometric dip
Transit produces a flux drop of 6,950 ppm lasting ≈ 3.85 h.
Extended Orbital Architecture
Planet / star radius ratio
0.085600
Semi-major axis / stellar radius
12.950
Impact parameter (b)
0.835
RV semi-amplitude (K)
367.000 m/s
Transit mid-time (BJD)
2,459,519.2998
Long. of periastron (ω)
-65.80°
Angular separation (arcsec)
0.13100
Eq. Temperature
1,198K
(925 °C)
Insolation (S⊕)
184.32
Earth = 1.00
Earth Similarity (ESI)
0.142
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-3919
Spectral Class
F-type yellow-white
Effective Temperature
6,100 K — hotter than the Sun (5,778 K)
Estimated Age
3.10 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.319 R☉
Stellar Mass
1.208 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.279 dex
Stellar density
0.742 g/cm³
Rotational v·sin i
7.73 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
1.625 mas
Total Proper Motion
2.370 mas/yr
PM Right Ascension
2.19 mas/yr
PM Declination
0.91 mas/yr
Galactic Cartesian (pc)
x = -0.666 · y = -0.369 · z = 0.648
Equatorial (J2000)
RA 208.94475° · Dec 40.39181°
Galactic ℓ, b
81.964° · 71.225°
Ecliptic λ, β
186.877° · 47.830°
HTM-20 index
-717158464
Similar Worlds
ups And c
Gas Giant · F-type yellow-white
Radius 12.30 R⊕ · 43.7 ly
HD 217786 b
Gas Giant · F-type yellow-white
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HD 8673 b
Gas Giant · F-type yellow-white
Radius 12.30 R⊕ · 123.5 ly
HD 136118 b
Gas Giant · F-type yellow-white
Radius 12.30 R⊕ · 167.8 ly
Kepler-117 c
Gas Giant · F-type yellow-white
Radius 12.34 R⊕ · 4,747.4 ly
TOI-1842 b
Gas Giant · F-type yellow-white
Radius 12.35 R⊕ · 728.8 ly