TOI-1452 b: 4.8 Earth Masses
Super-earth around TOI-1452
It is 1.67 times Earth's radius, closest in size to Earth, and 4.8 times Earth's mass, at 5.60 g/cm3, denser than Earth. A year there lasts 11.06 days, on an orbit 6 times closer to its star than Mercury is to the Sun. Its equilibrium temperature is 326 K, hotter than any desert. The host star TOI-1452 runs at 3185 K with 0.25 times the Sun's mass.
What is established here and what is missing
On the edge of the habitable zone. Borderline.
Dense enough to be rock rather than gas, at 5.60 g/cm3. Yes.
A measured mass, not just a radius. Yes.
A measured temperature rather than one derived from the star. Yes.
Any detection of an atmosphere. Not recorded in the archive.
Radius
1.67 Earth radii
Mass
4.8 Earth masses
Equilibrium temperature
326 K (measured)
One year
11.06 days
Orbit radius
0.0610 AU
Host star
TOI-1452 at 3185 K
Distance
100 light-years
Starlight blocked
0.310% at each transit
What the dip tells you
Block a known fraction of a known star and you have measured a width.
Two independent measurements sit behind this page: a dip in starlight for the size, and something else entirely for the mass. Together they make a density.
Found by Transiting Exoplanet Survey Satellite (TESS) in 2022. TESS scans most of the sky in 27-day stretches, so it favours bright nearby stars and short orbits over the faint distant ones Kepler specialised in.
