Key parameters at a glance
- A radius of 9.53 Earth radii
- A mass of 66.74 Earth masses
- Surface gravity around 0.74 g
- An orbital period of 80.389 days
- Semi-major axis 0.4020 AU
- Equilibrium temperature 599 K (326 °C)
- Distance from Earth 921.51 light-years
- Earth Similarity Index 0.229
- Travel time at Voyager 1 speed 16,250,795 years
1 sibling around TOI-6695
TOI-6695 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| TOI-6695 b this | Neptune-like | 9.53 | 66.74 | 80.389 | 599 | 2025 |
| TOI-6695 c | Gas Giant | 13.60 | 460.85 | 242.400 | 415 | 2025 |
TOI-6695 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#44of 574
top 7.5%
This planet
9.53R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-6695 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 9.53 | 11.21 |
| Mass (M⊕) | 1.00 | 66.74 | 317.83 |
| Density (g/cm³) | 5.51 | 0.41 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.74 | 2.53 |
| Insolation (S⊕) | 1.00 | 85.94 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 66.744 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 118339710
Gaia DR2
Gaia DR2 5701679002245319296
Gaia DR3
Gaia DR3 5701679002245319296
System
TOI-6695
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 80.39 Earth days (22.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4020 AU.
Transit Fingerprint
Depth
0.232 %
Duration
8.667 h
Transit midpoint (BJD)
2,459,249.5471
Photometric dip
Transit produces a flux drop of 2,315 ppm lasting ≈ 8.67 h.
Extended Orbital Architecture
RV semi-amplitude (K)
8.000 m/s
Transit mid-time (BJD)
2,459,249.5471
Long. of periastron (ω)
137.00°
Angular separation (arcsec)
1.42000
Eq. Temperature
599K
(326 °C)
Insolation (S⊕)
85.94
Earth = 1.00
Earth Similarity (ESI)
0.229
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Transit timing variations
Gravitational interactions from neighbours have been detected.
Discovery Paper
Primary reference
Eberhardt et al. 2025Instrument
TESS CCD Array
Publication
2025-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-6695
Spectral Class
F-type yellow-white
Effective Temperature
6,400 K — hotter than the Sun (5,778 K)
Estimated Age
2.10 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.517 R☉
Stellar Mass
1.338 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.202 dex
Stellar density
0.540 g/cm³
Rotational v·sin i
6.70 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.511 mas
Total Proper Motion
4.751 mas/yr
PM Right Ascension
-3.80 mas/yr
PM Declination
2.85 mas/yr
Galactic Cartesian (pc)
x = -0.584 · y = 0.707 · z = -0.400
Equatorial (J2000)
RA 129.57202° · Dec -23.55022°
Galactic ℓ, b
246.505° · 10.635°
Ecliptic λ, β
140.033° · -40.365°
HTM-20 index
-661467451
Similar Worlds
Kepler-1515 b
Neptune-like · F-type yellow-white
Radius 9.55 R⊕ · 1,759.0 ly
TOI-907.01
Neptune-like · F-type yellow-white
Radius 9.62 R⊕ · 1,019.3 ly
TOI-1898 b
Neptune-like · F-type yellow-white
Radius 9.40 R⊕ · 259.8 ly
Kepler-51 d
Neptune-like · F-type yellow-white
Radius 9.70 R⊕ · 2,556.5 ly
TOI-1859 b
Neptune-like · F-type yellow-white
Radius 9.75 R⊕ · 731.8 ly
Kepler-1517 b
Neptune-like · F-type yellow-white
Radius 9.76 R⊕ · 2,763.5 ly