TOI-1744.01
Astrophysical Synthesis & Habitability Characterization
TOI-1744.01 is a confirmed sub-neptune exoplanet orbiting the star TOI-1744, located approximately 373.1 light-years (114.39 parsecs) from the Solar System. First announced in 2024 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.0465% across the stellar disk), this world measures 2.68 Earth radii and has a measured mass of 7.65 Earth masses. Combining its mass and radius yields a mean bulk density of 2.19 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.07 g⊕ (10.49 m/s²), and an escape velocity of 18.9 km/s.
In its orbital architecture around TOI-1744, TOI-1744.01 completes one full revolution every 22.342 Earth days at a semi-major axis of 0.164086 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 79.9 km/s (compared to Earth's 29.8 km/s).
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 598 K (+325°C / +617°F) and receiving 63.31 S⊕ (~86,165 W/m²), TOI-1744.01 orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-1744 is classified as a stellar host with an effective photospheric temperature of 6,179 K, a radius of 1.14 R☉, a mass of 1.18 M☉, an estimated bolometric luminosity of 1.7 L☉. From Earth, TOI-1744 shines at apparent V-band magnitude 9.543 (accessible to binoculars and small amateur telescopes) 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-1744 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,179 K |
| Stellar Radius | 1.1400 R☉ |
| Stellar Mass | 1.1800 M☉ |
| Bolometric Luminosity | 1.7 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 9.543 · G: 9.392 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.164086 AU |
| Orbital Period | 22.342 days |
| Mean Orbital Velocity | 79.9 km/s |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 2.19 g/cm³ (18.9 km/s vesc) |
| Insolation Flux | 63.3100 S⊕ (~86,165 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 373.100 LY (114.390 pc) |