🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.45 AU - 0.65 AU

Year: 263 Days

Day: 42.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.4

Radius: 10.6

Gravity: 8.02 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.53 AU - 0.87 AU

Year: 378 Days

Day: 6.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 59,881,232 km

• M1: 131,796 km (0.066 R)
• M2: 747,989 km (0.118 R)
• M3: 1,175,390 km (0.044 R)
• M4: 1,620,295 km (0.034 R)
• M5: 2,246,661 km (0.051 R)
• M6: 2,845,950 km (0.089 R)
• M7: 3,345,308 km (0.117 R)
• M8: 3,902,560 km (0.054 R)
• M9: 4,696,176 km (0.048 R)
• M10: 5,061,195 km (0.057 R)
• M11: 5,396,145 km (0.1 R)
• M12: 5,762,809 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362.8

Radius: 9.8

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.62 AU - 0.88 AU

Year: 419 Days

Day: 10.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,881,232 km

• M1: 121,922 km (0.09 R)
• M2: 433,834 km (0.079 R)
• M3: 835,803 km (0.102 R)
• M4: 1,368,222 km (0.067 R)
• M5: 1,873,713 km (0.076 R)
• M6: 2,344,348 km (0.109 R)
• M7: 2,663,440 km (0.093 R)
• M8: 3,753,859 km (0.109 R)
• M9: 4,168,395 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 724.4

Radius: 10.3

Gravity: 6.83 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.88 AU - 1.2 AU

Year: 685 Days

Day: 10.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 59,881,232 km

• M1: 128,056 km (0.035 R)
• M2: 482,004 km (0.064 R)
• M3: 880,982 km (0.076 R)
• M4: 1,437,785 km (0.074 R)
• M5: 2,347,939 km (0.057 R)
• M6: 2,725,524 km (0.09 R)
• M7: 3,131,233 km (0.069 R)
• M8: 3,563,421 km (0.109 R)
• M9: 4,005,333 km (0.093 R)
• M10: 5,017,213 km (0.119 R)
• M11: 5,611,267 km (0.101 R)
• M12: 6,393,364 km (0.05 R)
• M13: 8,054,050 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.2

Radius: 13.9

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 2.05 AU - 3.29 AU

Year: 2817 Days

Day: 7.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 95.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,881,232 km

• M1: 176,376 km (0.119 R)
• M2: 1,205,011 km (0.104 R)
• M3: 1,806,394 km (0.096 R)
• M4: 2,619,309 km (0.11 R)
• M5: 3,845,563 km (0.033 R)
• M6: 7,548,858 km (0.075 R)
• M7: 8,846,021 km (0.063 R)
• M8: 9,824,990 km (0.119 R)
• M9: 13,327,076 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 169.8

Radius: 11.3

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 3.05 AU - 3.23 AU

Year: 3593 Days

Day: 10.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,881,232 km

• M1: 141,669 km (0.114 R)
• M2: 531,521 km (0.094 R)
• M3: 1,233,734 km (0.075 R)
• M4: 1,598,453 km (0.12 R)
• M5: 3,174,317 km (0.105 R)
• M6: 4,167,198 km (0.059 R)
• M7: 6,526,357 km (0.09 R)
• M8: 12,863,472 km (0.115 R)
• M9: 14,460,878 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 792

Radius: 5.8

Gravity: 23.54 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 6.37 AU - 10.23 AU

Year: 15439 Days

Day: 17.1 Hours

Environment

Temp: -236 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 59,881,232 km

• M1: 78,688 km (0.048 R)
• M2: 379,231 km (0.076 R)
• M3: 758,162 km (0.114 R)
• M4: 1,047,335 km (0.094 R)
• M5: 1,976,786 km (0.115 R)
• M6: 2,170,366 km (0.097 R)
• M7: 2,573,532 km (0.068 R)
• M8: 3,256,746 km (0.103 R)
• M9: 3,697,910 km (0.107 R)
• M10: 4,272,665 km (0.109 R)
• M11: 5,559,954 km (0.089 R)
• M12: 10,526,005 km (0.086 R)
• M13: 12,768,178 km (0.082 R)
• M14: 13,374,798 km (0.06 R)
• M15: 15,309,996 km (0.117 R)
• M16: 16,699,012 km (0.078 R)
• M17: 19,725,526 km (0.028 R)
• M18: 32,422,646 km (0.087 R)
• M19: 50,162,709 km (0.113 R)
• M20: 50,494,667 km (0.107 R)
• M21: 54,070,654 km (0.115 R)
• M22: 65,013,589 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 226.2

Radius: 7.4

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 10.32 AU - 12.14 AU

Year: 24299 Days

Day: 19.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 59,881,232 km

• M1: 92,451 km (0.084 R)
• M2: 360,680 km (0.091 R)
• M3: 1,083,388 km (0.097 R)
• M4: 1,978,581 km (0.092 R)
• M5: 3,244,927 km (0.102 R)
• M6: 4,182,607 km (0.082 R)
• M7: 5,504,005 km (0.109 R)
• M8: 6,220,579 km (0.115 R)
• M9: 8,023,083 km (0.1 R)
• M10: 11,697,357 km (0.047 R)
• M11: 12,749,927 km (0.075 R)
• M12: 25,315,550 km (0.095 R)
• M13: 33,178,564 km (0.115 R)
• M14: 35,151,012 km (0.038 R)
• M15: 36,551,547 km (0.086 R)
• M16: 40,283,565 km (0.083 R)
• M17: 42,241,502 km (0.111 R)
• M18: 43,823,799 km (0.098 R)
• M19: 49,751,913 km (0.114 R)
• M20: 58,988,834 km (0.026 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 184 - 17,628 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit