🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.42 AU - 0.62 AU

Year: 238 Days

Day: 45.1 Hours

Environment

Temp: -111 °C

Axial Tilt: 43.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.1

Radius: 13.8

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.63 AU - 1.05 AU

Year: 489 Days

Day: 10.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,691,923 km

• M1: 171,589 km (0.085 R)
• M2: 629,657 km (0.064 R)
• M3: 1,171,950 km (0.105 R)
• M4: 1,692,102 km (0.054 R)
• M5: 2,224,221 km (0.079 R)
• M6: 2,774,442 km (0.087 R)
• M7: 3,861,420 km (0.094 R)
• M8: 4,590,111 km (0.053 R)
• M9: 5,263,302 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.7

Radius: 9.1

Gravity: 6.63 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.2 AU - 2.96 AU

Year: 2635 Days

Day: 13.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 40,691,923 km

• M1: 113,246 km (0.045 R)
• M2: 459,265 km (0.106 R)
• M3: 815,308 km (0.068 R)
• M4: 1,312,123 km (0.094 R)
• M5: 1,917,845 km (0.088 R)
• M6: 2,482,876 km (0.047 R)
• M7: 2,820,219 km (0.062 R)
• M8: 3,323,466 km (0.067 R)
• M9: 4,040,638 km (0.106 R)
• M10: 5,460,322 km (0.112 R)
• M11: 7,128,638 km (0.104 R)
• M12: 7,541,229 km (0.094 R)
• M13: 8,253,614 km (0.106 R)
• M14: 8,675,629 km (0.103 R)
• M15: 9,884,081 km (0.111 R)
• M16: 10,397,501 km (0.057 R)
• M17: 11,678,507 km (0.095 R)
• M18: 12,462,101 km (0.104 R)
• M19: 16,554,650 km (0.111 R)
• M20: 18,187,212 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.8

Radius: 14.9

Gravity: 0.05 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 5.14 AU - 5.14 AU

Year: 7409 Days

Day: 6.5 Hours

Environment

Temp: -213 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 40,691,923 km

• M1: 185,352 km (0.103 R)
• M2: 702,661 km (0.037 R)
• M3: 1,757,027 km (0.041 R)
• M4: 2,599,861 km (0.115 R)
• M5: 3,525,872 km (0.038 R)
• M6: 4,374,092 km (0.106 R)
• M7: 4,910,101 km (0.074 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 729.4

Radius: 13.9

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 4.53 AU - 7.45 AU

Year: 9321 Days

Day: 14.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 40,691,923 km

• M1: 173,534 km (0.094 R)
• M2: 935,435 km (0.088 R)
• M3: 1,493,136 km (0.117 R)
• M4: 2,290,044 km (0.026 R)
• M5: 4,469,984 km (0.105 R)
• M6: 6,309,290 km (0.095 R)
• M7: 7,338,524 km (0.091 R)
• M8: 8,835,998 km (0.073 R)
• M9: 10,173,852 km (0.103 R)
• M10: 12,087,658 km (0.074 R)
• M11: 13,919,184 km (0.087 R)
• M12: 14,547,795 km (0.093 R)
• M13: 16,271,012 km (0.095 R)
• M14: 22,682,777 km (0.057 R)
• M15: 25,363,421 km (0.078 R)
• M16: 27,263,763 km (0.066 R)
• M17: 27,753,397 km (0.104 R)
• M18: 28,548,809 km (0.106 R)
• M19: 35,937,148 km (0.104 R)
• M20: 36,526,115 km (0.049 R)
• M21: 41,859,279 km (0.079 R)
• M22: 45,735,809 km (0.115 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 367.4

Radius: 7.3

Gravity: 6.89 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 6.14 AU - 7.7 AU

Year: 11574 Days

Day: 23.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 40,691,923 km

• M1: 100,979 km (0.062 R)
• M2: 481,855 km (0.098 R)
• M3: 744,249 km (0.114 R)
• M4: 991,535 km (0.115 R)
• M5: 1,294,321 km (0.045 R)
• M6: 1,561,503 km (0.115 R)
• M7: 1,834,668 km (0.049 R)
• M8: 5,192,991 km (0.114 R)
• M9: 5,773,730 km (0.086 R)
• M10: 6,219,382 km (0.114 R)
• M11: 6,687,922 km (0.07 R)
• M12: 8,711,682 km (0.109 R)
• M13: 11,533,098 km (0.039 R)
• M14: 12,351,399 km (0.082 R)
• M15: 12,632,643 km (0.094 R)
• M16: 14,287,195 km (0.076 R)
• M17: 15,684,589 km (0.092 R)
• M18: 20,499,247 km (0.107 R)
• M19: 21,053,058 km (0.065 R)
• M20: 22,439,232 km (0.079 R)
• M21: 26,773,681 km (0.071 R)
• M22: 29,886,962 km (0.105 R)
• M23: 33,450,533 km (0.081 R)
• M24: 38,350,162 km (0.115 R)
• M25: 40,907,987 km (0.076 R)
• M26: 42,675,186 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 190.1

Radius: 4.6

Gravity: 8.98 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 8.13 AU - 8.21 AU

Year: 14848 Days

Day: 22.1 Hours

Environment

Temp: -230 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,691,923 km

• M1: 63,280 km (0.092 R)
• M2: 302,188 km (0.069 R)
• M3: 1,327,232 km (0.04 R)
• M4: 2,736,594 km (0.064 R)
• M5: 7,944,545 km (0.067 R)
• M6: 9,555,414 km (0.03 R)
• M7: 10,609,780 km (0.112 R)
• M8: 12,609,904 km (0.093 R)
• M9: 18,536,074 km (0.107 R)
• M10: 33,378,726 km (0.097 R)
• M11: 37,952,082 km (0.085 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 289 - 16,539 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit