Tubb (world)/Physical

Tubb has two stars in the star system.

Yellow Sun
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	G7 V	Main Sequence (Dwarf)		0.95	5480 - 5550	0.83567
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0086	0.0758	0.88 - 1.56	0.86	8.6
	Orbit #	*	*	3	3	7
	Remarks
Red Sun
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	M6 V	Main Sequence (Dwarf)		0.102	2740 - 2810	0.00034
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0013	0.0015	0.02 - 0.04	0.13	1.3
	Orbit #	*	*	*	0	3
	Remarks		Far Companion; Subject to periodic flares<small><sup>(a)</sup></small>

^(a) The Red Sun is subject to flares about once every 20-30 years which increase output by a factor of two. The distance from Tubb itself means that the effect on Tubb's environment and ecology is minimal.

System Data

No information yet available.

Mainworld Data

The mainworld is named after the fabled leader of its first (Human) settlement: Iraza Shan Tubb.

Mainworld Size (S)

Tubb is a Meso World between 12,000km and 13,500km in diameter. The world has a standard gravity between 0.8G and 1.1G. The horizon will appear about 5.1km away. Vessels with 1G of thrust should check with local starport authorities before attempting to land using emergency power.

Mainworld Atmosphere (A)

Tubb has a pressure of 1.50 to 2.49 atmospheres. While a Dense Atmosphere requires no survival gear this atmosphere also contains an unusual taint such as disease, a hazardous gas mix, pollutants, or sulfur compounds which requires the use of a Filter Mask. Some taints may require more protective equipment. TL–3 or more advanced survival gear is required to settle this world.

Mainworld Hydrosphere (H)

Tubb has 95-100% of its surface covered by liquid water with only a few islands and archipelagos. Wilderness refueling is possible. Such worlds are Water Worlds or Ocean Worlds.