Kepler-1044 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1044 b is a confirmed sub-neptune exoplanet orbiting the star Kepler-1044, located approximately 4171.4 light-years (1278.96 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0486% across the stellar disk), this world measures 2.67 Earth radii and has a measured mass of 7.61 Earth masses. Combining its mass and radius yields a mean bulk density of 2.2 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 Kepler-1044, Kepler-1044 b completes one full revolution every 6.774 Earth days at a semi-major axis of 0.0741 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 119 km/s (compared to Earth's 29.8 km/s). The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1058 K (+785°C / +1445°F) and receiving 218.50 S⊕ (~297,374 W/m²), Kepler-1044 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1044 is classified as a stellar host with an effective photospheric temperature of 5,985 K, a radius of 1.11 R☉, a mass of 1.08 M☉, an estimated bolometric luminosity of 1.418 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.55 Gyr and a metallicity of [Fe/H] = 0.04 dex (near-solar heavy-element abundance). From Earth, Kepler-1044 shines at apparent V-band magnitude 15.478 (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: Kepler · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | Kepler-1044 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,985 K |
| Stellar Radius | 1.1100 R☉ |
| Stellar Mass | 1.0800 M☉ |
| Bolometric Luminosity | 1.418 L☉ |
| Metallicity [Fe/H] | 0.040 dex |
| Stellar Age | 3.550 Gyr |
| Apparent Magnitude | V: 15.478 · G: 15.306 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.074100 AU |
| Orbital Period | 6.774 days |
| Mean Orbital Velocity | 119 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.9200° |
| Mean Bulk Density | 2.2 g/cm³ (18.9 km/s vesc) |
| Insolation Flux | 218.4970 S⊕ (~297,374 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 4171.400 LY (1278.960 pc) |