Key parameters at a glance
- A radius of 8.54 Earth radii
- A mass of 73.00 Earth masses
- Surface gravity around 1.00 g
- An orbital period of 12.779 days
- Semi-major axis 0.1140 AU
- Equilibrium temperature 1,040 K (767 °C)
- Distance from Earth 627.77 light-years
- Earth Similarity Index 0.146
- Travel time at Voyager 1 speed 11,070,701 years
TOI-5786 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#120of 574
top 20.7%
This planet
8.54R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | TOI-5786 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 8.54 | 11.21 |
| Mass (M⊕) | 1.00 | 73.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.64 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.00 | 2.53 |
| Insolation (S⊕) | 1.00 | 374.46 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 73.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 40292751
Gaia DR2
Gaia DR2 2032764938419327616
Gaia DR3
Gaia DR3 2032764938419327616
System
TOI-5786
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 12.78 Earth days (3.5% of a terrestrial year) at a mean orbital distance of 0.1140 AU.
Transit Fingerprint
Depth
0.301 %
Duration
4.600 h
Impact parameter b
0.330
Rp / R★
0.057600
Transit midpoint (BJD)
2,460,140.6139
Photometric dip
Transit produces a flux drop of 3,008 ppm lasting ≈ 4.60 h.
Extended Orbital Architecture
Planet / star radius ratio
0.057600
Semi-major axis / stellar radius
18.000
Impact parameter (b)
0.330
RV semi-amplitude (K)
17.400 m/s
Transit mid-time (BJD)
2,460,140.6139
Angular separation (arcsec)
0.59200
Eq. Temperature
1,040K
(767 °C)
Insolation (S⊕)
374.46
Earth = 1.00
Earth Similarity (ESI)
0.146
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
Thomas et al. 2025Instrument
TESS CCD Array
Publication
2025-01
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-5786
Spectral Class
F-type yellow-white
Effective Temperature
6,235 K — hotter than the Sun (5,778 K)
Estimated Age
2.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.360 R☉
Stellar Mass
1.230 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.260 dex
Stellar density
0.682 g/cm³
Rotational v·sin i
7.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
5.167 mas
Total Proper Motion
0.946 mas/yr
PM Right Ascension
-0.84 mas/yr
PM Declination
0.44 mas/yr
Galactic Cartesian (pc)
x = 0.340 · y = -0.790 · z = 0.511
Equatorial (J2000)
RA 293.32233° · Dec 30.70425°
Galactic ℓ, b
64.800° · 5.386°
Ecliptic λ, β
303.140° · 51.494°
HTM-20 index
2019724542
Similar Worlds
DMPP-2 c
Neptune-like · F-type yellow-white
Radius 8.26 R⊕ · 449.9 ly
TOI-4507 b
Neptune-like · F-type yellow-white
Radius 8.20 R⊕ · 581.4 ly
Kepler-703 b
Neptune-like · F-type yellow-white
Radius 8.20 R⊕ · 3,773.1 ly
TOI-4641 b
Neptune-like · F-type yellow-white
Radius 8.18 R⊕ · 281.6 ly
Kepler-1746 b
Neptune-like · F-type yellow-white
Radius 8.94 R⊕ · 3,194.8 ly
Kepler-51 c
Neptune-like · F-type yellow-white
Radius 9.00 R⊕ · 2,556.5 ly