🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.57 AU - 0.77 AU

Year: 349 Days

Day: 44.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 38 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 476.3

Radius: 12.7

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.85 AU - 1.09 AU

Year: 607 Days

Day: 12.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,911,998 km

• M1: 157,975 km (0.107 R)
• M2: 639,232 km (0.055 R)
• M3: 1,122,134 km (0.108 R)
• M4: 1,583,045 km (0.065 R)
• M5: 1,999,076 km (0.111 R)
• M6: 2,731,956 km (0.092 R)
• M7: 3,448,979 km (0.097 R)
• M8: 3,926,495 km (0.065 R)
• M9: 4,477,464 km (0.068 R)
• M10: 4,967,846 km (0.073 R)
• M11: 5,392,405 km (0.099 R)
• M12: 5,984,513 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 474.6

Radius: 12.4

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.88 AU - 1.38 AU

Year: 764 Days

Day: 9.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,911,998 km

• M1: 154,235 km (0.046 R)
• M2: 591,211 km (0.074 R)
• M3: 1,007,691 km (0.084 R)
• M4: 1,398,890 km (0.059 R)
• M5: 1,786,348 km (0.061 R)
• M6: 2,208,663 km (0.07 R)
• M7: 2,643,993 km (0.094 R)
• M8: 3,161,153 km (0.085 R)
• M9: 3,649,889 km (0.081 R)
• M10: 4,462,654 km (0.119 R)
• M11: 6,017,574 km (0.064 R)
• M12: 6,568,095 km (0.069 R)
• M13: 7,152,125 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.1

Radius: 8.1

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.09 AU - 1.25 AU

Year: 805 Days

Day: 13.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 44.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,911,998 km

• M1: 100,679 km (0.105 R)
• M2: 401,670 km (0.07 R)
• M3: 723,156 km (0.108 R)
• M4: 1,292,675 km (0.107 R)
• M5: 1,654,702 km (0.087 R)
• M6: 2,593,877 km (0.081 R)
• M7: 3,021,727 km (0.091 R)
• M8: 3,701,201 km (0.066 R)
• M9: 4,271,468 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862.8

Radius: 13.2

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.98 AU - 2.1 AU

Year: 1853 Days

Day: 6.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,911,998 km

• M1: 164,109 km (0.066 R)
• M2: 736,022 km (0.099 R)
• M3: 1,416,093 km (0.083 R)
• M4: 1,915,900 km (0.099 R)
• M5: 2,533,590 km (0.115 R)
• M6: 3,982,595 km (0.118 R)
• M7: 5,356,053 km (0.093 R)
• M8: 7,563,668 km (0.101 R)
• M9: 8,502,844 km (0.102 R)
• M10: 9,382,778 km (0.117 R)
• M11: 11,020,726 km (0.12 R)
• M12: 11,632,880 km (0.064 R)
• M13: 12,717,465 km (0.068 R)
• M14: 13,606,674 km (0.087 R)
• M15: 14,177,689 km (0.057 R)
• M16: 15,041,019 km (0.072 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 632.9

Radius: 5.9

Gravity: 18.18 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 5.95 AU - 7.85 AU

Year: 11524 Days

Day: 18.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,911,998 km

• M1: 74,201 km (0.111 R)
• M2: 303,534 km (0.108 R)
• M3: 527,931 km (0.105 R)
• M4: 1,104,631 km (0.079 R)
• M5: 1,310,178 km (0.057 R)
• M6: 1,629,719 km (0.09 R)
• M7: 3,631,040 km (0.101 R)
• M8: 4,836,798 km (0.07 R)
• M9: 6,951,065 km (0.076 R)
• M10: 8,645,411 km (0.052 R)
• M11: 8,880,878 km (0.1 R)
• M12: 14,016,423 km (0.105 R)
• M13: 15,074,977 km (0.111 R)
• M14: 17,127,610 km (0.036 R)
• M15: 23,195,000 km (0.054 R)
• M16: 28,017,886 km (0.111 R)
• M17: 28,742,388 km (0.097 R)
• M18: 42,634,645 km (0.118 R)
• M19: 50,703,506 km (0.069 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 324.4

Radius: 4

Gravity: 20.28 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 8.22 AU - 9.56 AU

Year: 16853 Days

Day: 18.6 Hours

Environment

Temp: -237 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 52,911,998 km

• M1: 49,816 km (0.1 R)
• M2: 201,060 km (0.067 R)
• M3: 333,005 km (0.12 R)
• M4: 597,344 km (0.038 R)
• M5: 905,815 km (0.108 R)
• M6: 1,113,457 km (0.09 R)
• M7: 1,365,829 km (0.058 R)
• M8: 1,564,345 km (0.109 R)
• M9: 1,814,622 km (0.118 R)
• M10: 2,355,269 km (0.089 R)
• M11: 3,137,516 km (0.107 R)
• M12: 3,357,425 km (0.108 R)
• M13: 3,773,606 km (0.117 R)
• M14: 4,079,235 km (0.099 R)
• M15: 4,311,560 km (0.103 R)
• M16: 5,330,471 km (0.118 R)
• M17: 6,461,282 km (0.111 R)
• M18: 7,611,988 km (0.087 R)
• M19: 8,235,662 km (0.037 R)
• M20: 11,755,849 km (0.039 R)
• M21: 11,930,879 km (0.107 R)
• M22: 14,634,113 km (0.101 R)
• M23: 19,780,429 km (0.102 R)
• M24: 28,983,540 km (0.096 R)
• M25: 29,949,195 km (0.062 R)
• M26: 35,828,840 km (0.111 R)
• M27: 40,280,423 km (0.102 R)
• M28: 44,802,468 km (0.083 R)
• M29: 46,818,898 km (0.079 R)
• M30: 48,445,026 km (0.064 R)
• M31: 49,045,662 km (0.091 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 12,661 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit