Sawyers World

Sawyers World

Habitable planet orbiting Alpha Centauri A, (Alpha Centauri A II)

First extra-solar planet settled by humans (but not first landed upon, see Kakuloa).

• Largest city: Sawyer City

• Rotation: 25h 44m 17s (solar, ie noon to noon)
• Calendar: week = 5 26-hour days plus 2 25-hour days, with every 4th weekend having an extra hour.
• Radius: slightly larger than Earth, about 1.05 E, 8400 miles diameter (8320 miles)
• Density: slightly lower than Earth, about 5.2 gm/cm3, similar to Venus (5.23 gm/cm3)
• Gravity: slightly lower than Earth, about 0.99 g (9.7 m/sec2) (0.986 g, 9.682 m/sec2)

(But escape velocity slightly higher, due to 1/r-squared: 11.42 km/sec vs 11.18 km/sec, and get a 0.41 km/sec boost from rotation at equator (vs 0.44 on Earth)

• • Specifically, Ve = 11.49 km/sec, rotation boost = 0.45 km/sec at equator, 0.32 at 45 deg lat.

Sources

• The Chara Talisman ("we're here 26 hours a day")
• Alpha Centauri, First Landing (discussion of planetary parameters on initial survey)