Contact binary system in Antlia | |
![]() Image from Steve Bowers | |
S Antliae is a contact binary star. The two stars share material and are slowly spiralling towards each other |
Freedonia (S Antliae) System | |
Stars | Names: Freedonia Components: 2 (Contact Binary) 1) Freedonia (S Antliae A) 2) Libertia (S Antliae B) Location: - Distance from Sol: 260.7 ly (J2000) - Constellation: Antlia Freedonia Names: Freedonia, S Antliae A, HD 82610 A, HIP 46810 A, HR 3798 A Physical characteristics: - Mass: 1.94 x Sol - Radius: 2.026 x Sol - Luminosity: 13.69 x Sol (bolometric) - Temperature: 7,800 Kelvin - Spectral type: A8V - Age: 6 billion years Libertia Names: Libertia, S Antliae B, HD 82610 B, HIP 46810 B, HR 3798 B Physical characteristics: - Mass: 0.76 x Sol - Radius: 1.322 x Sol - Luminosity: 4.570 x Sol (bolometric) - Temperature: 7,340 Kelvin-- Spectral type: A9V - Age: 6 billion years Freedonia-Libertia binary orbit Orbital characteristics: - Average separation: 2,300,000 km - Period: 15.6 hr - Eccentricity: 0.66 |
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System | Planets 1) Losenbasen: AmmonoJovian Semi-major axis = 9.41 AU Orbital period = 17.56 years Eccentricity = 0.31 Inclination from binary plane 65 degrees Mass = 0.356 x Jupiter Radius = 61015 km ( 9.57 x Earth ) Obliquity 19 degrees Rotational period 12.8 hours Irradiance from star 0.2 x Earth Moons Tacolia Radius 2101 km Hautna Radius 1981 km ========== 2) Atmen: CryoAzurianJovian Semi-major axis =27.7 AU Orbital period = 0.196 years Eccentricity = 2.74 Inclination from binary plane 74 degrees Mass = 0.21 x Jupiter Radius = 45313 km Obliquity 23.1 degrees Rotational period 12.8 hours Irradiance from star 0.059 x Earth Moon Sylvania |
![]() Image from Steve Bowers | |
Losenbasen, a gas giant in this system |
![]() Image from Steve Bowers | |
Sunrise in Freedonia |