🌌 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: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.6 AU - 0.68 AU

Year: 331 Days

Day: 45.9 Hours

Environment

Temp: -125 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190

Radius: 14.1

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.95 AU - 1.21 AU

Year: 725 Days

Day: 6.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 80,399,118 km

• M1: 175,478 km (0.095 R)
• M2: 629,358 km (0.084 R)
• M3: 1,088,923 km (0.074 R)
• M4: 1,612,815 km (0.109 R)
• M5: 3,531,557 km (0.081 R)
• M6: 5,231,138 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.4

Radius: 9.5

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 1.29 AU - 1.65 AU

Year: 1151 Days

Day: 6.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 80,399,118 km

• M1: 118,182 km (0.115 R)
• M2: 564,732 km (0.097 R)
• M3: 898,634 km (0.105 R)
• M4: 1,415,046 km (0.102 R)
• M5: 2,280,919 km (0.109 R)
• M6: 2,627,238 km (0.042 R)
• M7: 2,927,032 km (0.078 R)
• M8: 3,375,526 km (0.119 R)
• M9: 3,772,410 km (0.085 R)
• M10: 5,290,828 km (0.117 R)
• M11: 5,735,882 km (0.104 R)
• M12: 6,071,729 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.3

Radius: 12.2

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.79 AU - 2.33 AU

Year: 1909 Days

Day: 12.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 151.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 80,399,118 km

• M1: 151,842 km (0.108 R)
• M2: 561,740 km (0.117 R)
• M3: 1,043,296 km (0.073 R)
• M4: 1,508,994 km (0.098 R)
• M5: 1,895,555 km (0.115 R)
• M6: 3,183,293 km (0.081 R)
• M7: 4,223,447 km (0.094 R)
• M8: 4,842,932 km (0.12 R)
• M9: 5,931,705 km (0.048 R)
• M10: 6,361,500 km (0.046 R)
• M11: 6,812,089 km (0.115 R)
• M12: 7,610,492 km (0.091 R)
• M13: 8,176,720 km (0.106 R)
• M14: 11,404,444 km (0.104 R)
• M15: 13,482,957 km (0.079 R)
• M16: 14,144,628 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 28.8

Radius: 12.8

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 3.03 AU - 4.87 AU

Year: 5069 Days

Day: 11.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 80,399,118 km

• M1: 262,843 km (0.118 R)
• M2: 736,470 km (0.109 R)
• M3: 1,527,394 km (0.12 R)
• M4: 2,259,377 km (0.119 R)
• M5: 3,187,033 km (0.096 R)
• M6: 4,054,701 km (0.05 R)
• M7: 4,597,591 km (0.106 R)
• M8: 5,934,847 km (0.099 R)
• M9: 6,636,760 km (0.098 R)
• M10: 7,223,184 km (0.101 R)
• M11: 7,972,370 km (0.103 R)
• M12: 8,827,770 km (0.114 R)
• M13: 10,286,050 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.4

Radius: 12.9

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.3 AU - 5.68 AU

Year: 7197 Days

Day: 7.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,399,118 km

• M1: 160,519 km (0.097 R)
• M2: 637,137 km (0.096 R)
• M3: 1,161,328 km (0.098 R)
• M4: 2,461,783 km (0.117 R)
• M5: 3,626,851 km (0.11 R)
• M6: 4,810,170 km (0.075 R)
• M7: 9,672,101 km (0.067 R)
• M8: 14,006,699 km (0.112 R)
• M9: 15,880,562 km (0.114 R)
• M10: 22,159,035 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 800.5

Radius: 8

Gravity: 12.51 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 5.29 AU - 7.65 AU

Year: 10626 Days

Day: 18.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 80,399,118 km

• M1: 183,557 km (0.097 R)
• M2: 448,195 km (0.107 R)
• M3: 697,276 km (0.082 R)
• M4: 1,132,306 km (0.071 R)
• M5: 1,632,711 km (0.034 R)
• M6: 2,072,230 km (0.086 R)
• M7: 3,024,570 km (0.077 R)
• M8: 4,692,436 km (0.111 R)
• M9: 5,042,346 km (0.048 R)
• M10: 6,348,934 km (0.082 R)
• M11: 7,142,550 km (0.098 R)
• M12: 8,270,817 km (0.096 R)
• M13: 9,021,799 km (0.114 R)
• M14: 13,662,774 km (0.094 R)
• M15: 14,913,113 km (0.083 R)
• M16: 20,096,380 km (0.082 R)
• M17: 28,297,634 km (0.099 R)
• M18: 29,350,953 km (0.063 R)
• M19: 32,211,862 km (0.096 R)
• M20: 34,535,117 km (0.072 R)
• M21: 38,865,826 km (0.082 R)
• M22: 39,773,287 km (0.038 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 857.5

Radius: 5.8

Gravity: 25.49 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 9.44 AU - 9.9 AU

Year: 19416 Days

Day: 16.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 80,399,118 km

• M1: 72,106 km (0.086 R)
• M2: 302,188 km (0.053 R)
• M3: 1,342,342 km (0.111 R)
• M4: 1,931,608 km (0.066 R)
• M5: 2,306,650 km (0.093 R)
• M6: 3,065,111 km (0.107 R)
• M7: 3,819,832 km (0.099 R)
• M8: 5,689,805 km (0.063 R)
• M9: 6,151,764 km (0.115 R)
• M10: 13,656,490 km (0.104 R)
• M11: 18,215,336 km (0.097 R)
• M12: 24,231,564 km (0.099 R)
• M13: 31,578,166 km (0.111 R)
• M14: 31,967,270 km (0.115 R)
• M15: 41,663,905 km (0.064 R)
• M16: 42,131,847 km (0.099 R)
• M17: 42,761,205 km (0.109 R)
• M18: 43,078,203 km (0.062 R)
• M19: 50,278,648 km (0.091 R)
• M20: 52,422,385 km (0.08 R)
• M21: 65,731,509 km (0.113 R)
• M22: 75,213,321 km (0.046 R)
• M23: 77,306,944 km (0.091 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 487 - 18,021 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit