TOI-5736 b
Astrophysical Synthesis & Habitability Characterization
TOI-5736 b is a confirmed super-earth exoplanet orbiting the star TOI-5736, located approximately 301.2 light-years (92.36 parsecs) from the Solar System. First announced in 2025 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.0608% across the stellar disk), this world measures 1.56 Earth radii and has a measured mass of 3.05 Earth masses. Combining its mass and radius yields a mean bulk density of 4.43 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.25 g⊕ (12.26 m/s²), and an escape velocity of 15.6 km/s.
In its orbital architecture around TOI-5736, TOI-5736 b completes one full revolution every 0.649 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1311 K (+1038°C / +1900°F) and receiving 493.48 S⊕ (~671,630 W/m²), TOI-5736 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5736 is classified as a stellar host with an effective photospheric temperature of 3,949 K, a radius of 0.58 R☉, a mass of 0.57 M☉, an estimated bolometric luminosity of 0.073 L☉. From Earth, TOI-5736 shines at apparent V-band magnitude 13.553 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere.
Methodology: Computed using the Schulze-Makuch et al. (2011) weighted metric comparing physical interior (radius, estimated density) and surface thermal regime (escape velocity, equilibrium temperature).
Discovery Facility: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-5736 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 3,949 K |
| Stellar Radius | 0.5800 R☉ |
| Stellar Mass | 0.5700 M☉ |
| Bolometric Luminosity | 0.073 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 13.553 · G: 12.904 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 0.649 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 84.5000° |
| Mean Bulk Density | 4.43 g/cm³ (15.6 km/s vesc) |
| Insolation Flux | 493.4827 S⊕ (~671,630 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 301.200 LY (92.360 pc) |