🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.42 AU - 0.6 AU

Year: 235 Days

Day: 42.7 Hours

Environment

Temp: -116 °C

Axial Tilt: 32.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.4 AU - 0.66 AU

Year: 249 Days

Day: 23.1 Hours

Environment

Temp: -119 °C

Axial Tilt: 26.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.5

Radius: 15

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.78 AU - 1.02 AU

Year: 551 Days

Day: 11.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 41,853,230 km

• M1: 191,036 km (0.062 R)
• M2: 670,049 km (0.115 R)
• M3: 1,768,097 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.3

Radius: 9.6

Gravity: 6.69 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.43 AU - 1.47 AU

Year: 1127 Days

Day: 11.1 Hours

Environment

Temp: -178 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 41,853,230 km

• M1: 119,828 km (0.12 R)
• M2: 520,900 km (0.089 R)
• M3: 910,602 km (0.048 R)
• M4: 1,242,410 km (0.066 R)
• M5: 1,964,968 km (0.111 R)
• M6: 4,273,862 km (0.082 R)
• M7: 4,919,376 km (0.116 R)
• M8: 5,711,198 km (0.065 R)
• M9: 6,247,955 km (0.105 R)
• M10: 6,631,674 km (0.114 R)
• M11: 8,571,659 km (0.118 R)
• M12: 10,170,860 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 255.1

Radius: 13.3

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.64 AU - 1.82 AU

Year: 1469 Days

Day: 10.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 41,853,230 km

• M1: 165,455 km (0.092 R)
• M2: 991,385 km (0.115 R)
• M3: 2,093,622 km (0.087 R)
• M4: 4,747,638 km (0.068 R)
• M5: 5,522,256 km (0.048 R)
• M6: 6,487,162 km (0.069 R)
• M7: 7,136,866 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.7

Radius: 9.3

Gravity: 7.86 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.46 AU - 2.46 AU

Year: 2491 Days

Day: 8.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 41,853,230 km

• M1: 117,434 km (0.05 R)
• M2: 409,599 km (0.087 R)
• M3: 726,298 km (0.053 R)
• M4: 1,038,060 km (0.073 R)
• M5: 1,431,352 km (0.118 R)
• M6: 2,157,500 km (0.119 R)
• M7: 2,760,978 km (0.089 R)
• M8: 3,314,490 km (0.12 R)
• M9: 3,654,975 km (0.106 R)
• M10: 4,364,967 km (0.072 R)
• M11: 5,475,282 km (0.036 R)
• M12: 6,057,218 km (0.06 R)
• M13: 7,225,727 km (0.075 R)
• M14: 9,568,429 km (0.041 R)
• M15: 12,980,009 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.4

Radius: 12.1

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 3.78 AU - 5.8 AU

Year: 6769 Days

Day: 11.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 41,853,230 km

• M1: 150,495 km (0.042 R)
• M2: 626,815 km (0.081 R)
• M3: 1,019,210 km (0.094 R)
• M4: 1,519,615 km (0.036 R)
• M5: 1,962,126 km (0.05 R)
• M6: 2,367,536 km (0.109 R)
• M7: 2,908,781 km (0.105 R)
• M8: 3,351,291 km (0.096 R)
• M9: 4,112,894 km (0.061 R)
• M10: 5,561,301 km (0.07 R)
• M11: 6,012,937 km (0.075 R)
• M12: 8,356,986 km (0.108 R)
• M13: 8,735,618 km (0.052 R)
• M14: 9,527,589 km (0.112 R)
• M15: 12,353,942 km (0.072 R)
• M16: 13,125,717 km (0.111 R)
• M17: 13,580,943 km (0.054 R)
• M18: 17,749,189 km (0.084 R)
• M19: 19,455,801 km (0.054 R)
• M20: 20,273,503 km (0.086 R)
• M21: 21,347,167 km (0.119 R)
• M22: 24,709,828 km (0.108 R)
• M23: 26,652,506 km (0.076 R)
• M24: 27,199,586 km (0.108 R)
• M25: 29,463,001 km (0.1 R)
• M26: 30,146,215 km (0.08 R)
• M27: 30,839,900 km (0.037 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.9

Radius: 13.9

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 5.33 AU - 6.55 AU

Year: 9347 Days

Day: 5.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 41,853,230 km

• M1: 173,234 km (0.092 R)
• M2: 905,366 km (0.049 R)
• M3: 1,378,844 km (0.102 R)
• M4: 1,990,699 km (0.12 R)
• M5: 3,045,513 km (0.058 R)
• M6: 3,675,171 km (0.113 R)
• M7: 4,417,924 km (0.057 R)
• M8: 4,986,995 km (0.115 R)
• M9: 5,604,834 km (0.118 R)
• M10: 6,484,021 km (0.114 R)
• M11: 7,259,835 km (0.074 R)
• M12: 8,347,412 km (0.079 R)
• M13: 9,633,504 km (0.033 R)
• M14: 11,099,115 km (0.091 R)
• M15: 13,628,516 km (0.104 R)
• M16: 14,530,591 km (0.097 R)
• M17: 15,027,854 km (0.115 R)
• M18: 16,994,318 km (0.109 R)
• M19: 18,541,908 km (0.1 R)
• M20: 20,722,895 km (0.071 R)
• M21: 22,902,836 km (0.103 R)
• M22: 26,315,761 km (0.081 R)
• M23: 28,480,143 km (0.047 R)
• M24: 30,964,814 km (0.038 R)
• M25: 32,207,374 km (0.1 R)
• M26: 34,461,515 km (0.111 R)
• M27: 37,511,816 km (0.119 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 442 - 15,078 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit