Key parameters at a glance
- A radius of 14.12 Earth radii
- A mass of 95.30 Earth masses
- Surface gravity around 0.48 g
- An orbital period of 3.944 days
- Semi-major axis 0.0510 AU
- Equilibrium temperature 1,415 K (1142 °C)
- Distance from Earth 1,054.35 light-years
- Earth Similarity Index 0.072
- Travel time at Voyager 1 speed 18,593,429 years
TOI-1296 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#370of 1771
top 20.8%
This planet
14.12R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-1296 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.12 | 11.21 |
| Mass (M⊕) | 1.00 | 95.30 | 317.83 |
| Density (g/cm³) | 5.51 | 0.19 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.48 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,078.60 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 95.300 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 219854185
Gaia DR2
Gaia DR2 1650851223740149504
Gaia DR3
Gaia DR3 1650851223740149504
System
TOI-1296
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.94 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0510 AU.
Transit Fingerprint
Depth
0.673 %
Duration
4.864 h
Impact parameter b
0.243
Rp / R★
0.075989
Transit midpoint (BJD)
2,458,930.7553
Photometric dip
Transit produces a flux drop of 6,733 ppm lasting ≈ 4.86 h.
Extended Orbital Architecture
Planet / star radius ratio
0.075989
Semi-major axis / stellar radius
6.440
Impact parameter (b)
0.243
RV semi-amplitude (K)
35.000 m/s
Transit mid-time (BJD)
2,458,930.7553
Long. of periastron (ω)
0.60°
Angular separation (arcsec)
0.15800
Eq. Temperature
1,415K
(1142 °C)
Insolation (S⊕)
1,078.60
Earth = 1.00
Earth Similarity (ESI)
0.072
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
Moutou et al. 2021Instrument
TESS CCD Array
Publication
2021-09
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1296
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,567 K — cooler than the Sun (5,778 K)
Estimated Age
7.10 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.703 R☉
Stellar Mass
1.158 M☉
Metallicity [Fe/H]
0.41
Extended Stellar Properties
Surface gravity (log g)
4.035 dex
Stellar density
0.328 g/cm³
Systemic radial velocity
25.39 km/s
Rotational v·sin i
4.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.065 mas
Total Proper Motion
22.305 mas/yr
PM Right Ascension
-21.25 mas/yr
PM Declination
-6.79 mas/yr
Galactic Cartesian (pc)
x = -0.077 · y = -0.329 · z = 0.941
Equatorial (J2000)
RA 256.77064° · Dec 70.23848°
Galactic ℓ, b
101.404° · 34.157°
Ecliptic λ, β
136.908° · 83.918°
HTM-20 index
2114709264
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