Image from Steve Bowers
The twin suns of Yathrib set across the Golden Sea.

Stellar Umma system.

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.

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Development Notes
Text by M. Alan Kazlev
additional material by Steve Bowers
Initially published on 15 December 2001.