Key parameters at a glance
- A radius of 1.54 Earth radii
- A mass of 3.57 Earth masses
- Surface gravity around 1.51 g
- An orbital period of 7.189 days
- Equilibrium temperature 1,009 K (736 °C)
- Distance from Earth 219.82 light-years
- Earth Similarity Index 0.298
- Travel time at Voyager 1 speed 3,876,543 years
TOI-512 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#670of 1176
top 56.9%
This planet
1.54R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | TOI-512 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.54 | 11.21 |
| Mass (M⊕) | 1.00 | 3.57 | 317.83 |
| Density (g/cm³) | 5.51 | 5.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.51 | 2.53 |
| Insolation (S⊕) | 1.00 | 127.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3.570 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 119292328
Gaia DR2
Gaia DR2 5574111674620962688
Gaia DR3
Gaia DR3 5574111674620962688
System
TOI-512
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.19 Earth days (2.0% of a terrestrial year) on a nearly circular orbit.
Transit Fingerprint
Depth
0.025 %
Duration
3.310 h
Impact parameter b
0.300
Rp / R★
0.015700
Transit midpoint (BJD)
2,458,471.2120
Photometric dip
Transit produces a flux drop of 246 ppm lasting ≈ 3.31 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015700
Impact parameter (b)
0.300
RV semi-amplitude (K)
1.540 m/s
Transit mid-time (BJD)
2,458,471.2120
Long. of periastron (ω)
-54.00°
Eq. Temperature
1,009K
(736 °C)
Insolation (S⊕)
127.00
Earth = 1.00
Earth Similarity (ESI)
0.298
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
Rodrigues et al. 2025Instrument
TESS CCD Array
Publication
2025-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-512
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,277 K — cooler than the Sun (5,778 K)
Estimated Age
8.23 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.890 R☉
Stellar Mass
0.740 M☉
Metallicity [Fe/H]
-0.11
Extended Stellar Properties
Surface gravity (log g)
4.350 dex
Stellar density
1.886 g/cm³
Systemic radial velocity
68.08 km/s
Rotational v·sin i
1.63 km/s
Activity index (log R'HK)
-5.100
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
14.808 mas
Total Proper Motion
109.060 mas/yr
PM Right Ascension
3.00 mas/yr
PM Declination
-109.02 mas/yr
Galactic Cartesian (pc)
x = -0.090 · y = 0.776 · z = -0.624
Equatorial (J2000)
RA 96.64670° · Dec -38.60721°
Galactic ℓ, b
246.564° · -21.087°
Ecliptic λ, β
101.028° · -61.792°
HTM-20 index
-1758491619
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