Star: HD 74868 A+B (close-orbiting binary) Distance from Sol: 119 ly Luminosity: (combined) 2.71 x Sol (A component is 2.3x as bright as the B component; these stars are separated by 15 million kilometres on average) Constellation: Vela Planet: Yathrib Type: Lifeless Gaian world, Campian subtype Semimajor Axis: 1.629 AU Year: 1.8 standard years Diameter: 13100 km Gravity: 1.05 gees Distance from Medina: 16.4 ly (epoch 2000) Colonised: 1650 AT
One of the four original colonies of the Stellar Umma, together with Medina (capital of the Umma Core), Zamzam (now capital of the Umma Shell) and Jeddah. Like many other worlds in this volume, Yathrib retains Umma Arabic as a major language.