Key parameters at a glance
- A radius of 14.28 Earth radii
- A mass of 129.04 Earth masses
- Surface gravity around 0.63 g
- An orbital period of 3.494 days
- Semi-major axis 0.0463 AU
- Equilibrium temperature 1,512 K (1239 °C)
- Distance from Earth 1,519.86 light-years
- Earth Similarity Index 0.070
- Travel time at Voyager 1 speed 26,802,745 years
TOI-3912 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#325of 1771
top 18.3%
This planet
14.28R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-3912 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.28 | 11.21 |
| Mass (M⊕) | 1.00 | 129.04 | 317.83 |
| Density (g/cm³) | 5.51 | 0.24 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.63 | 2.53 |
| Insolation (S⊕) | 1.00 | 872.20 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 129.038 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 156648452
Gaia DR2
Gaia DR2 1255520718461480960
Gaia DR3
Gaia DR3 1255520718461480960
System
TOI-3912
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.49 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0463 AU.
Transit Fingerprint
Depth
0.885 %
Duration
3.557 h
Impact parameter b
0.544
Transit midpoint (BJD)
2,459,442.8187
Photometric dip
Transit produces a flux drop of 8,850 ppm lasting ≈ 3.56 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
7.160
Impact parameter (b)
0.544
RV semi-amplitude (K)
51.200 m/s
Transit mid-time (BJD)
2,459,442.8187
Angular separation (arcsec)
0.09940
Eq. Temperature
1,512K
(1239 °C)
Insolation (S⊕)
872.20
Earth = 1.00
Earth Similarity (ESI)
0.070
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-3912
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,725 K — cooler than the Sun (5,778 K)
Estimated Age
7.50 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.392 R☉
Stellar Mass
1.088 M☉
Metallicity [Fe/H]
0.19
Extended Stellar Properties
Surface gravity (log g)
4.188 dex
Stellar density
0.569 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.117 mas
Total Proper Motion
7.762 mas/yr
PM Right Ascension
7.74 mas/yr
PM Declination
-0.53 mas/yr
Galactic Cartesian (pc)
x = -0.740 · y = -0.534 · z = 0.408
Equatorial (J2000)
RA 215.80150° · Dec 24.07656°
Galactic ℓ, b
29.666° · 69.117°
Ecliptic λ, β
203.870° · 35.926°
HTM-20 index
1326134519
Similar Worlds
TOI-1294 c
Gas Giant · G-type yellow (Sun-like)
Radius 14.30 R⊕ · 1,085.0 ly
HD 45652 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.30 R⊕ · 113.7 ly
HD 30669 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.30 R⊕ · 189.4 ly
51 Peg b
Gas Giant · G-type yellow (Sun-like)
Radius 14.30 R⊕ · 50.4 ly
HD 164509 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.30 R⊕ · 173.2 ly
HD 208487 b
Gas Giant · G-type yellow (Sun-like)
Radius 14.30 R⊕ · 147.2 ly