NGC 2682 Sand 1429 b
Astrophysical Synthesis & Habitability Characterization
NGC 2682 Sand 1429 b is a confirmed gas giant exoplanet orbiting the star NGC 2682 Sand 1429, located approximately 2781.4 light-years (852.79 parsecs) from the Solar System. First announced in 2024 by Multiple Observatories using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 13.4 Earth radii (1.2 Jupiter radii) and has a measured mass of 572.091 Earth masses (1.8 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.31 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 3.19 g⊕ (31.28 m/s²), and an escape velocity of 73.1 km/s.
In its orbital architecture around NGC 2682 Sand 1429, NGC 2682 Sand 1429 b completes one full revolution every 77.48 Earth days at a semi-major axis of 0.384 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 53.9 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 683 K (+410°C / +770°F) and receiving 37.26 S⊕ (~50,709 W/m²), NGC 2682 Sand 1429 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star NGC 2682 Sand 1429 is classified as a warm F-type star of spectral type F9.5 V with an effective photospheric temperature of 6,000 K, a radius of 2.13 R☉, a mass of 1.26 M☉, an estimated bolometric luminosity of 5.275 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.3 Gyr and a metallicity of [Fe/H] = -0.013 dex (near-solar heavy-element abundance). From Earth, NGC 2682 Sand 1429 shines at apparent V-band magnitude 12.704 (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: Multiple Observatories · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | NGC 2682 Sand 1429 |
| Spectral Type | F9.5 V |
| Effective Temp (Teff) | 6,000 K |
| Stellar Radius | 2.1300 R☉ |
| Stellar Mass | 1.2600 M☉ |
| Bolometric Luminosity | 5.275 L☉ |
| Metallicity [Fe/H] | -0.013 dex |
| Stellar Age | 4.300 Gyr |
| Apparent Magnitude | V: 12.704 · G: 12.586 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.384000 AU |
| Orbital Period | 77.48 days |
| Mean Orbital Velocity | 53.9 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 1.31 g/cm³ (73.1 km/s vesc) |
| Insolation Flux | 37.2589 S⊕ (~50,709 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2781.400 LY (852.793 pc) |