TOI-2267 d
Astrophysical Synthesis & Habitability Characterization
TOI-2267 d is a confirmed super-earth exoplanet orbiting the star TOI-2267 B, located approximately 73.5 light-years (22.55 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 1.5581% across the stellar disk), this world measures 1.77 Earth radii and has a measured mass of 3.78 Earth masses. Combining its mass and radius yields a mean bulk density of 3.76 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.21 g⊕ (11.87 m/s²), and an escape velocity of 16.3 km/s.
In its orbital architecture around TOI-2267 B, TOI-2267 d completes one full revolution every 2.034 Earth days at a semi-major axis of 0.0145 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 77.5 km/s (compared to Earth's 29.8 km/s).
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 422 K (+149°C / +300°F) and receiving 5.30 S⊕ (~7,213 W/m²), TOI-2267 d orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2267 B is classified as a low-mass red dwarf of spectral type M6 V with an effective photospheric temperature of 3,022 K, a radius of 0.13 R☉, a mass of 0.0989 M☉, an estimated bolometric luminosity of 0.00126 L☉. Stellar evolution modeling indicates an estimated stellar age of 1 Gyr and a metallicity of [Fe/H] = 0.164 dex (metal-rich relative to the Sun).
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-2267 B |
| Spectral Type | M6 V |
| Effective Temp (Teff) | 3,022 K |
| Stellar Radius | 0.1300 R☉ |
| Stellar Mass | 0.0989 M☉ |
| Bolometric Luminosity | 0.00126 L☉ |
| Metallicity [Fe/H] | 0.164 dex |
| Stellar Age | 1.000 Gyr |
| Apparent Magnitude | — |
| System Architecture | 2 Stars, 3 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.014500 AU |
| Orbital Period | 2.034 days |
| Mean Orbital Velocity | 77.5 km/s |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 89.0000° |
| Mean Bulk Density | 3.76 g/cm³ (16.3 km/s vesc) |
| Insolation Flux | 5.3000 S⊕ (~7,213 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 73.500 LY (22.550 pc) |