Key parameters at a glance
- A radius of 11.89 Earth radii
- A mass of 1,144.18 Earth masses
- Surface gravity around 8.09 g
- An orbital period of 8.872 days
- Semi-major axis 0.0892 AU
- Equilibrium temperature 1,166 K (893 °C)
- Distance from Earth 1,095.84 light-years
- Earth Similarity Index 0.148
- Travel time at Voyager 1 speed 19,325,053 years
TOI-2025 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1545of 1771
top 87.2%
This planet
11.89R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-2025 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.89 | 11.21 |
| Mass (M⊕) | 1.00 | 1,144.18 | 317.83 |
| Density (g/cm³) | 5.51 | 3.74 | 1.33 |
| Surface Gravity (g) | 1.00 | 8.09 | 2.53 |
| Insolation (S⊕) | 1.00 | 343.72 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,144.182 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 394050135
Gaia DR2
Gaia DR2 2296342614570999552
Gaia DR3
Gaia DR3 2296342614570999552
System
TOI-2025
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.87 Earth days (2.4% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0892 AU.
Transit Fingerprint
Depth
0.558 %
Duration
3.601 h
Impact parameter b
0.190
Rp / R★
0.074690
Transit midpoint (BJD)
2,459,089.5334
Photometric dip
Transit produces a flux drop of 5,578 ppm lasting ≈ 3.60 h.
Extended Orbital Architecture
Planet / star radius ratio
0.074690
Semi-major axis / stellar radius
13.120
Impact parameter (b)
0.190
RV semi-amplitude (K)
341.000 m/s
Transit mid-time (BJD)
2,459,089.5334
Long. of periastron (ω)
91.80°
Sky-projected obliquity (λ)
9.00°
Angular separation (arcsec)
0.26500
Eq. Temperature
1,166K
(893 °C)
Insolation (S⊕)
343.72
Earth = 1.00
Earth Similarity (ESI)
0.148
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
Knudstrup et al. 2022Instrument
TESS CCD Array
Publication
2022-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-2025
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,977 K — hotter than the Sun (5,778 K)
Estimated Age
4.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.459 R☉
Stellar Mass
1.199 M☉
Metallicity [Fe/H]
0.15
Extended Stellar Properties
Surface gravity (log g)
4.187 dex
Stellar density
0.542 g/cm³
Rotational v·sin i
6.00 km/s
Rotation period
13.20 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.948 mas
Total Proper Motion
5.313 mas/yr
PM Right Ascension
2.79 mas/yr
PM Declination
-4.52 mas/yr
Galactic Cartesian (pc)
x = 0.030 · y = -0.132 · z = 0.991
Equatorial (J2000)
RA 282.79526° · Dec 82.24541°
Galactic ℓ, b
114.232° · 26.869°
Ecliptic λ, β
83.759° · 74.035°
HTM-20 index
-39071451
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