Sandtu

Sandtu is a star system located in the Firestorm Nebula, consisting of the star Sandtu and four planets.

Sandtu is the home system of the brakomi.

## Sandtu

* Stellar mass - 0.89 solar masses
* Stellar luminosity - 0.57
* Age - 5.065 billion years (10.522 billion left on main sequence)
* Habitable ecosphere radius - 0.754 AU (0.614-1.089)

## Brak

Main Article: Brak

* Planet Type - Terrestrial, Cold, Few clouds (N2, O2, He - breathable)
* Distance from primary star - 0.925AU
* Mass - 6.9E+024Kg (1.153 Earth masses)
* Surface gravity - 1030.2 cm/sec2 (1.05 Earth gees)
* Surface pressure - 1518 millibars (1.498 Earth atmospheres)
* Surface temperature - 37.1F
* Normal temperature range -
	+ Night (30.3F) Day (43.4F)
	+ Min (-5.8F) Max (77.6F)
* Equatorial radius - 6680.8 Km (1 Earth radii)
* Density - 5.52 grams/cc (1 Earth densities)
* Eccentricity of orbit - 0.069
* Escape velocity - 11.7 Km/sec
* Molecular weight retained - 3.9 and above
	+ He, N, O, CH4, NH3, H2O, Ne, N2
	+ Nitrogen 82.6% 1254 mb (ipp: 1202)
	+ Oxygen 14.6% 221 mb(ipp: 212)
	+ Helium 2.0% 31 mb (ipp: 29)
	+ Argon 0.8% 12 mb (ipp: 11)
* Axial tilt - 15 degree
* Planetary albedo - 0.17
* Exospheric temperature - 846.24K
* Length of year - 345.16 Earth days (519.20 local)
* Length of day - 15.96 hours
* Boiling point of water - 233.1F
* Hydrosphere percentage - 73.0
* Cloud cover percentage - 23.6
* Ice cover percentage - 8.3

## Dirno

* Planet type - Gas Dwarf
* Distance from primary star - 1.527AU
* Mass - 1.5E+025Kg (2.545 Earth masses)
* Equatorial radius - 8622.5 Km (1.4 Earth radii)
* Density - 5.67 grams/cc (1 Earth densities)
* Eccentricity of orbit - 0.027
* Escape velocity -  15.3 Km/sec
* Molecular weight retained - 0.9 and above
	+ H, H2, He, N, O, CH4, NH3, H2O
* Axial tilt - 28 degrees
* Planetary albedo - 0.70
* Exospheric temperature - 310.70K
* Length of year - 731.79 Earth days (1351.84 local)
* Length of day - 12.99 hours

## Nakk

* Planet Type - Ice, Cold, Icy, Arid, Cloudless, Normal atmosphere
* Distance from primary star - 2.684AU
* Mass - 6.7E+024Kg (1.119 Earth masses)
* Surface gravity - 1019.5 cm/sec2 (1.04 Earth gees)
* Surface pressure - 1430 millibars (1.411 Earth atmospheres)
* Surface temperature - -234F
* Normal temperature range -
	+ Night (-237F) Day (-231.2F)
	+ Min (-265.6F) Max (-205F)
* Equatorial radius - 6616.3 Km (1 Earth radii)
* Density - 5.51 grams/cc (1 Earth densities)
* Eccentricity of orbit - 0.062
* Escape velocity - 11.6 Km/sec
* Molecular weight retained - 0.5 and above
	+ H, H2, He, N, O, CH4, NH3, H2O
* Axial tilt - 25 degrees
* Planetary albedo - 0.70
* Exospheric temperature - 100.56K
* Length of year - 1705.44 Earth days (2726.60 local)
* Length of day - 15.01 hours
* Boiling point of water - 230F
* Hydrosphere percentage - 0.0
* Cloud cover percentage - 0.0
* Ice cover percentage - 100.0

## Vixn

* Planet type - Sub-Jovian
* Distance from primary star - 6.724AU
* Mass - 2.5E+025Kg (4.207 Earth masses, 2.270 Earth masses dust, 1.938 Earth masses gas)
* Equatorial radius - 19330.1 Km (3 Earth radii)
* Density - 0.83 grams/cc (0.15 Earth densities)
* Eccentricity of orbit - 0.001
* Escape velocity - 13.2 Km/sec
* Molecular weight retained - 0.1 and above
	+ H, H2, He, N, O, CH4, NH3, H2O
* Axial tilt - 32 degrees
* Planetary albedo - 0.45
* Exospheric temperature - 16.02K
* Length of year - 6761.77 Earth days (8413.53 local)
* Length of day - 19.29 hours