TIC 279401253 c
Astrophysical Synthesis & Habitability Characterization
TIC 279401253 c is a confirmed gas giant exoplanet orbiting the star TIC 279401253, located approximately 931.4 light-years (285.58 parsecs) from the Solar System. First announced in 2023 by Multiple Observatories using the Transit detection technique (producing an estimated primary transit depth of 1.1876% across the stellar disk), this world measures 12.6 Earth radii (1.12 Jupiter radii) and has a measured mass of 2548.984 Earth masses (8.02 Jupiter masses). Combining its mass and radius yields a mean bulk density of 7.03 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 16.06 g⊕ (157.49 m/s²), and an escape velocity of 159.1 km/s.
In its orbital architecture around TIC 279401253, TIC 279401253 c completes one full revolution every 155.3 Earth days at a semi-major axis of 0.591 AU (situated at an orbital separation between Mercury's 0.39 AU and Venus's 0.72 AU). Its mean orbital velocity is approximately 41.4 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.254, swinging from 0.4409 AU at periapsis out to 0.7411 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 384 K (+111°C / +232°F) and receiving 3.58 S⊕ (~4,871 W/m²), TIC 279401253 c orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TIC 279401253 is classified as a stellar host with an effective photospheric temperature of 5,951 K, a radius of 1.06 R☉, a mass of 1.13 M☉, an estimated bolometric luminosity of 1.264 L☉. Stellar evolution modeling indicates an estimated stellar age of 1.2 Gyr and a metallicity of [Fe/H] = 0.2 dex (metal-rich relative to the Sun). From Earth, TIC 279401253 shines at apparent V-band magnitude 11.938 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere. The TIC 279401253 system is a multi-planet architecture hosting 2 confirmed worlds, with TIC 279401253 c sharing its stellar neighborhood alongside TIC 279401253 b.
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: Multiple Observatories · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TIC 279401253 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,951 K |
| Stellar Radius | 1.0600 R☉ |
| Stellar Mass | 1.1300 M☉ |
| Bolometric Luminosity | 1.264 L☉ |
| Metallicity [Fe/H] | 0.200 dex |
| Stellar Age | 1.200 Gyr |
| Apparent Magnitude | V: 11.938 · G: 11.697 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.591000 AU |
| Orbital Period | 155.3 days |
| Mean Orbital Velocity | 41.4 km/s |
| Orbital Eccentricity (e) | 0.25400 |
| Orbital Inclination (i) | 90.0000° |
| Mean Bulk Density | 7.03 g/cm³ (159.1 km/s vesc) |
| Insolation Flux | 3.5788 S⊕ (~4,871 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 931.400 LY (285.584 pc) |