Key parameters at a glance
- A radius of 17.03 Earth radii
- A mass of 374.72 Earth masses
- Surface gravity around 1.29 g
- An orbital period of 2.103 days
- Semi-major axis 0.0364 AU
- Equilibrium temperature 1,942 K (1669 °C)
- Distance from Earth 987.66 light-years
- Earth Similarity Index 0.057
- Travel time at Voyager 1 speed 17,417,424 years
TOI-1181 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#109of 1771
top 6.1%
This planet
17.03R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-1181 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 17.03 | 11.21 |
| Mass (M⊕) | 1.00 | 374.72 | 317.83 |
| Density (g/cm³) | 5.51 | 0.49 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.29 | 2.53 |
| Insolation (S⊕) | 1.00 | 14,140.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 374.720 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 229510866
Gaia DR2
Gaia DR2 2241587416546520320
Gaia DR3
Gaia DR3 2241587416547315584
System
TOI-1181
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.10 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0364 AU.
Transit Fingerprint
Depth
0.714 %
Duration
4.122 h
Impact parameter b
0.329
Rp / R★
0.079470
Transit midpoint (BJD)
2,459,481.5170
Photometric dip
Transit produces a flux drop of 7,142 ppm lasting ≈ 4.12 h.
Extended Orbital Architecture
Planet / star radius ratio
0.079470
Semi-major axis / stellar radius
3.976
Impact parameter (b)
0.329
RV semi-amplitude (K)
146.000 m/s
Transit mid-time (BJD)
2,459,481.5170
Long. of periastron (ω)
90.00°
Sky-projected obliquity (λ)
-1.50°
Angular separation (arcsec)
0.12000
Eq. Temperature
1,942K
(1669 °C)
Insolation (S⊕)
14,140.00
Earth = 1.00
Earth Similarity (ESI)
0.057
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
Kab Aacute Th et al. 2022Instrument
TESS CCD Array
Publication
2022-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-1181
Spectral Class
F-type yellow-white
Effective Temperature
6,054 K — hotter than the Sun (5,778 K)
Estimated Age
2.70 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.961 R☉
Stellar Mass
1.467 M☉
Metallicity [Fe/H]
0.38
Extended Stellar Properties
Surface gravity (log g)
4.020 dex
Stellar density
0.312 g/cm³
Rotational v·sin i
10.60 km/s
Rotation period
8.70 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.274 mas
Total Proper Motion
5.679 mas/yr
PM Right Ascension
-5.68 mas/yr
PM Declination
0.19 mas/yr
Galactic Cartesian (pc)
x = 0.198 · y = -0.385 · z = 0.901
Equatorial (J2000)
RA 297.21582° · Dec 64.35435°
Galactic ℓ, b
96.709° · 18.394°
Ecliptic λ, β
1.577° · 78.579°
HTM-20 index
991934609
Similar Worlds
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Gas Giant · F-type yellow-white
Radius 17.04 R⊕ · 1,514.9 ly
WASP-103 b
Gas Giant · F-type yellow-white
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HAT-P-56 b
Gas Giant · F-type yellow-white
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HAT-P-7 b
Gas Giant · F-type yellow-white
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WASP-79 b
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TOI-5592 b
Gas Giant · F-type yellow-white
Radius 17.15 R⊕ · 1,947.2 ly