Key parameters at a glance
- A radius of 1.53 Earth radii
- A mass of 3.72 Earth masses
- Surface gravity around 1.59 g
- An orbital period of 6.341 days
- Semi-major axis 0.0640 AU
- Equilibrium temperature 910 K (637 °C)
- Distance from Earth 318.37 light-years
- Earth Similarity Index 0.332
- Travel time at Voyager 1 speed 5,614,524 years
1 sibling around TOI-5788
TOI-5788 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-5788 b this | Super-Earth | 1.53 | 3.72 | 6.341 | 910 | 2026 |
| TOI-5788 c | Sub-Neptune | 2.27 | 6.40 | 16.213 | 667 | 2026 |
TOI-5788 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#703of 1176
top 59.7%
This planet
1.53R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | TOI-5788 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.53 | 11.21 |
| Mass (M⊕) | 1.00 | 3.72 | 317.83 |
| Density (g/cm³) | 5.51 | 5.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.59 | 2.53 |
| Insolation (S⊕) | 1.00 | 175.10 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3.720 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 42883782
Gaia DR2
Gaia DR2 2042653052618584960
Gaia DR3
Gaia DR3 2042653052618584960
System
TOI-5788
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.34 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0640 AU.
Transit Fingerprint
Depth
0.033 %
Duration
3.341 h
Rp / R★
0.016100
Transit midpoint (BJD)
2,459,611.7425
Photometric dip
Transit produces a flux drop of 330 ppm lasting ≈ 3.34 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016100
RV semi-amplitude (K)
1.420 m/s
Transit mid-time (BJD)
2,459,611.7425
Long. of periastron (ω)
96.00°
Angular separation (arcsec)
0.65600
Eq. Temperature
910K
(637 °C)
Insolation (S⊕)
175.10
Earth = 1.00
Earth Similarity (ESI)
0.332
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.
Discovery Paper
Primary reference
Lakeland 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-5788
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,615 K — cooler than the Sun (5,778 K)
Estimated Age
5.72 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.870 R☉
Stellar Mass
0.870 M☉
Metallicity [Fe/H]
-0.32
Extended Stellar Properties
Surface gravity (log g)
4.420 dex
Stellar density
1.889 g/cm³
Systemic radial velocity
-59.36 km/s
Rotational v·sin i
2.00 km/s
Activity index (log R'HK)
-4.940
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
10.216 mas
Total Proper Motion
120.921 mas/yr
PM Right Ascension
17.20 mas/yr
PM Declination
119.69 mas/yr
Galactic Cartesian (pc)
x = 0.255 · y = -0.811 · z = 0.526
Equatorial (J2000)
RA 287.42490° · Dec 31.76153°
Galactic ℓ, b
63.437° · 10.358°
Ecliptic λ, β
295.450° · 53.672°
HTM-20 index
-625989599
Similar Worlds
Kepler-1950 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.53 R⊕ · 2,274.1 ly
Kepler-198 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.53 R⊕ · 1,615.6 ly
Kepler-990 c
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Radius 1.53 R⊕ · 2,616.3 ly
Kepler-825 b
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Kepler-1891 b
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K2-192 b
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