Key parameters at a glance
- A radius of 17.26 Earth radii
- A mass of 139.84 Earth masses
- Surface gravity around 0.47 g
- An orbital period of 4.808 days
- Semi-major axis 0.0569 AU
- Equilibrium temperature 1,205 K (932 °C)
- Distance from Earth 1,142.66 light-years
- Earth Similarity Index 0.079
- Travel time at Voyager 1 speed 20,150,891 years
TOI-2796 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#101of 1771
top 5.6%
This planet
17.26R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2796 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 17.26 | 11.21 |
| Mass (M⊕) | 1.00 | 139.84 | 317.83 |
| Density (g/cm³) | 5.51 | 0.15 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.47 | 2.53 |
| Insolation (S⊕) | 1.00 | 352.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 139.845 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 220076110
Gaia DR2
Gaia DR2 3222453935725951488
Gaia DR3
Gaia DR3 3222453935725951488
System
TOI-2796
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.81 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0569 AU.
Transit Fingerprint
Depth
2.240 %
Duration
1.960 h
Impact parameter b
0.970
Transit midpoint (BJD)
2,459,026.4888
Photometric dip
Transit produces a flux drop of 22,400 ppm lasting ≈ 1.96 h.
Extended Orbital Architecture
Semi-major axis / stellar radius
11.430
Impact parameter (b)
0.970
RV semi-amplitude (K)
50.000 m/s
Transit mid-time (BJD)
2,459,026.4888
Angular separation (arcsec)
0.16200
Eq. Temperature
1,205K
(932 °C)
Insolation (S⊕)
352.00
Earth = 1.00
Earth Similarity (ESI)
0.079
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-2796
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,764 K — cooler than the Sun (5,778 K)
Estimated Age
4.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.069 R☉
Stellar Mass
1.063 M☉
Metallicity [Fe/H]
0.24
Extended Stellar Properties
Surface gravity (log g)
4.400 dex
Stellar density
1.220 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.827 mas
Total Proper Motion
3.726 mas/yr
PM Right Ascension
2.64 mas/yr
PM Declination
2.63 mas/yr
Galactic Cartesian (pc)
x = 0.102 · y = 0.995 · z = 0.016
Equatorial (J2000)
RA 84.15272° · Dec 0.89628°
Galactic ℓ, b
203.334° · -16.157°
Ecliptic λ, β
83.670° · -22.415°
HTM-20 index
1206776512
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