Key parameters at a glance
- A radius of 10.77 Earth radii
- A mass of 236.78 Earth masses
- Surface gravity around 2.04 g
- An orbital period of 9.455 days
- Semi-major axis 0.0990 AU
- Equilibrium temperature 1,373 K (1100 °C)
- Distance from Earth 1,292.27 light-years
- Earth Similarity Index 0.109
- Travel time at Voyager 1 speed 22,789,224 years
2 siblings around TOI-375
TOI-375 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
TOI-375 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1692of 1771
top 95.5%
This planet
10.77R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-375 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.77 | 11.21 |
| Mass (M⊕) | 1.00 | 236.78 | 317.83 |
| Density (g/cm³) | 5.51 | 1.04 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.04 | 2.53 |
| Insolation (S⊕) | 1.00 | 593.30 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 236.782 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 280097543
Gaia DR2
Gaia DR2 4638853885598035968
Gaia DR3
Gaia DR3 4638853885598035968
System
TOI-375
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 9.45 Earth days (2.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0990 AU.
Transit Fingerprint
Depth
0.135 %
Duration
9.840 h
Impact parameter b
0.177
Rp / R★
0.034000
Transit midpoint (BJD)
2,458,329.2910
Photometric dip
Transit produces a flux drop of 1,355 ppm lasting ≈ 9.84 h.
Extended Orbital Architecture
Planet / star radius ratio
0.034000
Impact parameter (b)
0.177
RV semi-amplitude (K)
56.270 m/s
Transit mid-time (BJD)
2,458,329.2910
Long. of periastron (ω)
9.11°
Angular separation (arcsec)
0.25000
Eq. Temperature
1,373K
(1100 °C)
Insolation (S⊕)
593.30
Earth = 1.00
Earth Similarity (ESI)
0.109
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
Reinarz et al. 2026Instrument
TESS CCD Array
Publication
2026-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2026 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-375
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,260 K — cooler than the Sun (5,778 K)
Estimated Age
2.94 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.900 R☉
Stellar Mass
1.441 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
3.672 dex
Stellar density
0.083 g/cm³
Rotational v·sin i
2.97 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
2.495 mas
Total Proper Motion
6.424 mas/yr
PM Right Ascension
-4.79 mas/yr
PM Declination
-4.28 mas/yr
Galactic Cartesian (pc)
x = 0.149 · y = 0.160 · z = -0.976
Equatorial (J2000)
RA 47.14990° · Dec -77.38333°
Galactic ℓ, b
294.036° · -37.271°
Ecliptic λ, β
301.619° · -73.542°
HTM-20 index
-1573057111
Similar Worlds
Kepler-77 b
Gas Giant · G-type yellow (Sun-like)
Radius 10.76 R⊕ · 2,085.5 ly
TOI-5027 b
Gas Giant · G-type yellow (Sun-like)
Radius 10.76 R⊕ · 666.8 ly
TOI-2158 b
Gas Giant · G-type yellow (Sun-like)
Radius 10.76 R⊕ · 647.3 ly
Kepler-15 b
Gas Giant · G-type yellow (Sun-like)
Radius 10.76 R⊕ · 2,411.6 ly
Kepler-725 b
Gas Giant · G-type yellow (Sun-like)
Radius 10.80 R⊕ · 2,473.8 ly
TOI-7510 c
Gas Giant · G-type yellow (Sun-like)
Radius 10.81 R⊕ · 812.1 ly