Key parameters at a glance
- A radius of 16.29 Earth radii
- A mass of 292.40 Earth masses
- Surface gravity around 1.10 g
- An orbital period of 3.824 days
- Semi-major axis 0.0513 AU
- Equilibrium temperature 1,580 K (1307 °C)
- Distance from Earth 966.92 light-years
- Earth Similarity Index 0.069
- Travel time at Voyager 1 speed 17,051,670 years
TOI-2154 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#142of 1771
top 8.0%
This planet
16.29R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2154 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.29 | 11.21 |
| Mass (M⊕) | 1.00 | 292.40 | 317.83 |
| Density (g/cm³) | 5.51 | 0.37 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.10 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,005.89 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 292.402 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 428787891
Gaia DR2
Gaia DR2 570653411060484480
Gaia DR3
Gaia DR3 570653411060484480
System
TOI-2154
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.82 Earth days (1.0% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0513 AU.
Transit Fingerprint
Depth
1.143 %
Duration
2.465 h
Impact parameter b
0.864
Rp / R★
0.106930
Transit midpoint (BJD)
2,459,148.6017
Photometric dip
Transit produces a flux drop of 11,430 ppm lasting ≈ 2.47 h.
Extended Orbital Architecture
Planet / star radius ratio
0.106930
Semi-major axis / stellar radius
7.910
Impact parameter (b)
0.864
RV semi-amplitude (K)
105.000 m/s
Transit mid-time (BJD)
2,459,148.6017
Long. of periastron (ω)
31.00°
Angular separation (arcsec)
0.17300
Eq. Temperature
1,580K
(1307 °C)
Insolation (S⊕)
1,005.89
Earth = 1.00
Earth Similarity (ESI)
0.069
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
Rodriguez et al. 2023Instrument
TESS CCD Array
Publication
2023-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2154
Spectral Class
F-type yellow-white
Effective Temperature
6,280 K — hotter than the Sun (5,778 K)
Estimated Age
2.90 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.396 R☉
Stellar Mass
1.233 M☉
Metallicity [Fe/H]
0.01
Extended Stellar Properties
Surface gravity (log g)
4.239 dex
Stellar density
0.639 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.344 mas
Total Proper Motion
18.651 mas/yr
PM Right Ascension
-10.78 mas/yr
PM Declination
15.22 mas/yr
Galactic Cartesian (pc)
x = 0.032 · y = 0.093 · z = 0.995
Equatorial (J2000)
RA 71.02815° · Dec 84.36427°
Galactic ℓ, b
128.174° · 24.059°
Ecliptic λ, β
86.199° · 61.176°
HTM-20 index
1740279659
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