🌌 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: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 26.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 925.3

Radius: 9.9

Gravity: 9.44 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.64 AU - 1 AU

Year: 479 Days

Day: 14.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 49,004,715 km

• M1: 123,119 km (0.111 R)
• M2: 443,707 km (0.076 R)
• M3: 765,941 km (0.076 R)
• M4: 1,105,827 km (0.07 R)
• M5: 1,599,650 km (0.09 R)
• M6: 1,992,344 km (0.112 R)
• M7: 2,795,535 km (0.073 R)
• M8: 3,308,507 km (0.054 R)
• M9: 4,224,045 km (0.053 R)
• M10: 4,804,635 km (0.073 R)
• M11: 5,774,627 km (0.109 R)
• M12: 6,335,021 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 991

Radius: 13.6

Gravity: 5.36 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.81 AU - 1.33 AU

Year: 715 Days

Day: 13.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 49,004,715 km

• M1: 169,345 km (0.116 R)
• M2: 712,834 km (0.11 R)
• M3: 1,281,007 km (0.092 R)
• M4: 1,787,545 km (0.107 R)
• M5: 2,721,634 km (0.12 R)
• M6: 3,286,516 km (0.07 R)
• M7: 4,082,975 km (0.074 R)
• M8: 4,586,521 km (0.117 R)
• M9: 5,335,109 km (0.071 R)
• M10: 5,778,816 km (0.101 R)
• M11: 6,247,207 km (0.117 R)
• M12: 8,003,636 km (0.088 R)
• M13: 8,929,497 km (0.048 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 805.2

Radius: 14.5

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.18 AU - 1.94 AU

Year: 1258 Days

Day: 6.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 49,004,715 km

• M1: 180,565 km (0.059 R)
• M2: 840,590 km (0.025 R)
• M3: 1,344,286 km (0.103 R)
• M4: 1,981,723 km (0.103 R)
• M5: 2,725,823 km (0.111 R)
• M6: 3,618,772 km (0.105 R)
• M7: 4,311,411 km (0.108 R)
• M8: 4,814,807 km (0.047 R)
• M9: 6,353,571 km (0.054 R)
• M10: 9,036,759 km (0.069 R)
• M11: 9,615,553 km (0.101 R)
• M12: 10,219,031 km (0.075 R)
• M13: 12,146,001 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86

Radius: 9.8

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.87 AU - 2.99 AU

Year: 3238 Days

Day: 10.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 73.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,004,715 km

• M1: 123,269 km (0.092 R)
• M2: 593,754 km (0.069 R)
• M3: 1,155,793 km (0.114 R)
• M4: 1,651,261 km (0.091 R)
• M5: 1,994,888 km (0.112 R)
• M6: 4,197,267 km (0.097 R)
• M7: 6,663,688 km (0.094 R)
• M8: 8,698,967 km (0.063 R)
• M9: 10,120,894 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 795.2

Radius: 8.7

Gravity: 10.51 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 3.17 AU - 5.03 AU

Year: 5360 Days

Day: 6.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 49,004,715 km

• M1: 108,159 km (0.091 R)
• M2: 410,646 km (0.095 R)
• M3: 683,812 km (0.091 R)
• M4: 1,011,730 km (0.088 R)
• M5: 1,541,008 km (0.11 R)
• M6: 2,616,018 km (0.037 R)
• M7: 3,911,685 km (0.073 R)
• M8: 4,686,901 km (0.097 R)
• M9: 5,413,049 km (0.066 R)
• M10: 6,473,249 km (0.077 R)
• M11: 7,966,835 km (0.106 R)
• M12: 8,472,475 km (0.118 R)
• M13: 9,165,712 km (0.09 R)
• M14: 11,327,700 km (0.116 R)
• M15: 12,997,811 km (0.098 R)
• M16: 13,864,132 km (0.066 R)
• M17: 14,142,534 km (0.106 R)
• M18: 15,000,478 km (0.093 R)
• M19: 15,591,389 km (0.071 R)
• M20: 16,568,862 km (0.08 R)
• M21: 18,243,909 km (0.087 R)
• M22: 18,849,033 km (0.05 R)
• M23: 19,676,758 km (0.082 R)
• M24: 23,466,670 km (0.118 R)
• M25: 24,102,162 km (0.064 R)
• M26: 24,912,683 km (0.036 R)
• M27: 28,248,117 km (0.097 R)
• M28: 30,069,022 km (0.092 R)
• M29: 33,043,776 km (0.092 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 398.4

Radius: 5.9

Gravity: 11.44 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 6.62 AU - 8.6 AU

Year: 13555 Days

Day: 21.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 49,004,715 km

• M1: 73,602 km (0.111 R)
• M2: 277,504 km (0.084 R)
• M3: 1,946,119 km (0.104 R)
• M4: 2,394,613 km (0.066 R)
• M5: 2,844,005 km (0.087 R)
• M6: 4,073,400 km (0.116 R)
• M7: 6,450,361 km (0.115 R)
• M8: 7,033,194 km (0.109 R)
• M9: 7,864,210 km (0.079 R)
• M10: 8,303,430 km (0.084 R)
• M11: 10,276,925 km (0.085 R)
• M12: 11,510,808 km (0.084 R)
• M13: 12,661,365 km (0.084 R)
• M14: 15,800,826 km (0.107 R)
• M15: 16,642,015 km (0.062 R)
• M16: 19,581,763 km (0.113 R)
• M17: 22,238,471 km (0.111 R)
• M18: 25,126,159 km (0.091 R)
• M19: 25,885,368 km (0.117 R)
• M20: 26,953,946 km (0.08 R)
• M21: 27,549,046 km (0.101 R)
• M22: 30,123,326 km (0.108 R)
• M23: 38,175,581 km (0.068 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 198 - 12,564 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit