🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.55 AU - 0.73 AU

Year: 331 Days

Day: 27.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 36.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.5

Radius: 9.4

Gravity: 7.68 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.68 AU - 0.76 AU

Year: 394 Days

Day: 13 Hours

Environment

Temp: -144 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,135,073 km

• M1: 116,986 km (0.065 R)
• M2: 701,464 km (0.07 R)
• M3: 1,023,549 km (0.101 R)
• M4: 1,619,098 km (0.093 R)
• M5: 2,024,209 km (0.086 R)
• M6: 2,421,840 km (0.103 R)
• M7: 3,352,339 km (0.109 R)
• M8: 4,351,054 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 969.5

Radius: 11.2

Gravity: 7.73 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.21 AU - 1.63 AU

Year: 1093 Days

Day: 9.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,135,073 km

• M1: 139,276 km (0.1 R)
• M2: 604,675 km (0.066 R)
• M3: 1,361,939 km (0.109 R)
• M4: 1,888,823 km (0.08 R)
• M5: 2,403,140 km (0.074 R)
• M6: 2,818,723 km (0.038 R)
• M7: 3,417,414 km (0.067 R)
• M8: 7,713,117 km (0.072 R)
• M9: 9,272,674 km (0.108 R)
• M10: 9,639,189 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 722.2

Radius: 10.9

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 4.04 AU - 6.16 AU

Year: 7437 Days

Day: 13.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 40,135,073 km

• M1: 135,536 km (0.118 R)
• M2: 983,756 km (0.078 R)
• M3: 1,347,578 km (0.095 R)
• M4: 1,760,169 km (0.112 R)
• M5: 2,108,283 km (0.115 R)
• M6: 4,226,289 km (0.052 R)
• M7: 4,604,473 km (0.096 R)
• M8: 5,650,461 km (0.076 R)
• M9: 6,811,640 km (0.077 R)
• M10: 8,755,814 km (0.108 R)
• M11: 9,509,488 km (0.036 R)
• M12: 12,739,455 km (0.113 R)
• M13: 14,479,578 km (0.095 R)
• M14: 14,845,793 km (0.116 R)
• M15: 15,406,786 km (0.102 R)
• M16: 15,981,840 km (0.113 R)
• M17: 18,856,512 km (0.1 R)
• M18: 19,366,940 km (0.103 R)
• M19: 26,962,772 km (0.103 R)
• M20: 29,814,407 km (0.083 R)
• M21: 32,029,503 km (0.051 R)
• M22: 32,652,129 km (0.109 R)
• M23: 35,223,716 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.8

Radius: 13.2

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 5.08 AU - 5.16 AU

Year: 7480 Days

Day: 11.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,135,073 km

• M1: 178,620 km (0.072 R)
• M2: 1,054,216 km (0.025 R)
• M3: 1,581,249 km (0.104 R)
• M4: 4,268,925 km (0.072 R)
• M5: 4,856,844 km (0.077 R)
• M6: 13,141,275 km (0.106 R)
• M7: 15,153,516 km (0.051 R)
• M8: 17,121,327 km (0.085 R)
• M9: 26,467,454 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.2

Radius: 13.7

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 5.13 AU - 5.79 AU

Year: 8238 Days

Day: 8.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,135,073 km

• M1: 170,392 km (0.099 R)
• M2: 808,427 km (0.1 R)
• M3: 1,620,743 km (0.055 R)
• M4: 2,388,330 km (0.086 R)
• M5: 3,366,999 km (0.055 R)
• M6: 4,054,701 km (0.077 R)
• M7: 7,067,901 km (0.096 R)
• M8: 7,858,975 km (0.094 R)
• M9: 8,828,668 km (0.12 R)
• M10: 9,703,516 km (0.114 R)
• M11: 13,791,727 km (0.078 R)
• M12: 14,344,641 km (0.117 R)
• M13: 18,572,426 km (0.068 R)
• M14: 23,566,901 km (0.112 R)
• M15: 24,039,480 km (0.083 R)
• M16: 24,922,556 km (0.099 R)
• M17: 30,216,526 km (0.048 R)
• M18: 31,529,397 km (0.054 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 189.1

Radius: 4.9

Gravity: 7.88 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 6.97 AU - 9.01 AU

Year: 14583 Days

Day: 25 Hours

Environment

Temp: -235 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 40,135,073 km

• M1: 61,036 km (0.082 R)
• M2: 237,711 km (0.053 R)
• M3: 664,813 km (0.103 R)
• M4: 1,581,100 km (0.03 R)
• M5: 1,838,707 km (0.049 R)
• M6: 2,259,825 km (0.093 R)
• M7: 2,419,895 km (0.079 R)
• M8: 2,822,912 km (0.077 R)
• M9: 3,761,638 km (0.071 R)
• M10: 4,168,694 km (0.109 R)
• M11: 5,160,977 km (0.078 R)
• M12: 5,695,640 km (0.077 R)
• M13: 8,207,837 km (0.058 R)
• M14: 8,375,237 km (0.085 R)
• M15: 8,587,815 km (0.062 R)
• M16: 9,473,734 km (0.082 R)
• M17: 10,177,143 km (0.057 R)
• M18: 11,168,229 km (0.102 R)
• M19: 11,582,017 km (0.073 R)
• M20: 13,225,649 km (0.117 R)
• M21: 13,513,924 km (0.094 R)
• M22: 15,778,985 km (0.095 R)
• M23: 19,894,123 km (0.096 R)
• M24: 23,307,647 km (0.049 R)
• M25: 23,559,421 km (0.096 R)
• M26: 24,671,531 km (0.052 R)
• M27: 26,449,951 km (0.079 R)
• M28: 28,598,625 km (0.098 R)
• M29: 35,184,671 km (0.108 R)
• M30: 35,405,328 km (0.113 R)
• M31: 37,089,800 km (0.117 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 203 - 17,746 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit