🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.4

Radius: 13.7

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.47 AU - 0.71 AU

Year: 313 Days

Day: 10.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,303,036 km

• M1: 170,392 km (0.116 R)
• M2: 613,950 km (0.111 R)
• M3: 1,042,996 km (0.092 R)
• M4: 1,499,719 km (0.045 R)
• M5: 2,128,927 km (0.114 R)
• M6: 2,617,963 km (0.039 R)
• M7: 3,172,522 km (0.098 R)
• M8: 3,719,003 km (0.102 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531.6

Radius: 12.5

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.77 AU - 0.89 AU

Year: 522 Days

Day: 5.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 40,303,036 km

• M1: 155,582 km (0.061 R)
• M2: 577,897 km (0.079 R)
• M3: 1,043,146 km (0.074 R)
• M4: 2,177,247 km (0.057 R)
• M5: 2,605,097 km (0.089 R)
• M6: 3,956,265 km (0.08 R)
• M7: 4,674,335 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 216

Radius: 10.2

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.38 AU - 1.68 AU

Year: 1306 Days

Day: 14.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,303,036 km

• M1: 126,859 km (0.107 R)
• M2: 617,540 km (0.064 R)
• M3: 1,002,306 km (0.098 R)
• M4: 1,351,467 km (0.117 R)
• M5: 1,699,581 km (0.077 R)
• M6: 2,117,558 km (0.05 R)
• M7: 2,462,231 km (0.094 R)
• M8: 2,903,994 km (0.079 R)
• M9: 4,490,778 km (0.111 R)
• M10: 4,908,456 km (0.044 R)
• M11: 7,332,240 km (0.067 R)
• M12: 7,770,861 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 224.3

Radius: 13.3

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.86 AU - 2.04 AU

Year: 1880 Days

Day: 8.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,303,036 km

• M1: 165,455 km (0.069 R)
• M2: 600,037 km (0.03 R)
• M3: 1,087,277 km (0.055 R)
• M4: 1,598,154 km (0.053 R)
• M5: 2,020,170 km (0.107 R)
• M6: 2,612,428 km (0.111 R)
• M7: 3,657,070 km (0.077 R)
• M8: 4,335,346 km (0.109 R)
• M9: 5,211,840 km (0.069 R)
• M10: 5,692,797 km (0.094 R)
• M11: 6,225,366 km (0.115 R)
• M12: 6,908,130 km (0.092 R)
• M13: 9,376,047 km (0.059 R)
• M14: 9,999,122 km (0.057 R)
• M15: 10,555,027 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372

Radius: 9.5

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.91 AU - 3.11 AU

Year: 2745 Days

Day: 11.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,303,036 km

• M1: 122,670 km (0.099 R)
• M2: 578,794 km (0.066 R)
• M3: 1,207,554 km (0.106 R)
• M4: 1,766,900 km (0.07 R)
• M5: 2,255,337 km (0.102 R)
• M6: 2,601,208 km (0.109 R)
• M7: 3,091,590 km (0.099 R)
• M8: 3,895,529 km (0.074 R)
• M9: 4,726,395 km (0.119 R)
• M10: 7,316,832 km (0.052 R)
• M11: 7,990,471 km (0.111 R)
• M12: 11,141,900 km (0.103 R)
• M13: 12,313,700 km (0.102 R)
• M14: 14,992,549 km (0.098 R)
• M15: 15,742,483 km (0.076 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 309.6

Radius: 4.8

Gravity: 13.44 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 4.53 AU - 7.09 AU

Year: 9667 Days

Day: 24.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,303,036 km

• M1: 59,690 km (0.071 R)
• M2: 944,411 km (0.095 R)
• M3: 1,118,992 km (0.096 R)
• M4: 1,421,629 km (0.03 R)
• M5: 1,907,971 km (0.12 R)
• M6: 2,156,902 km (0.116 R)
• M7: 2,498,135 km (0.048 R)
• M8: 3,353,236 km (0.076 R)
• M9: 3,811,155 km (0.094 R)
• M10: 4,361,676 km (0.12 R)
• M11: 4,601,631 km (0.088 R)
• M12: 5,839,702 km (0.095 R)
• M13: 6,364,791 km (0.098 R)
• M14: 6,814,183 km (0.096 R)
• M15: 10,241,620 km (0.072 R)
• M16: 19,424,236 km (0.09 R)
• M17: 24,526,720 km (0.111 R)
• M18: 26,495,728 km (0.043 R)
• M19: 29,595,695 km (0.054 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 591.5

Radius: 7.5

Gravity: 10.52 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 6.37 AU - 9.29 AU

Year: 15124 Days

Day: 21.8 Hours

Environment

Temp: -240 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,303,036 km

• M1: 93,499 km (0.084 R)
• M2: 348,563 km (0.091 R)
• M3: 706,850 km (0.103 R)
• M4: 2,918,206 km (0.106 R)
• M5: 3,710,177 km (0.105 R)
• M6: 7,376,073 km (0.11 R)
• M7: 14,473,295 km (0.117 R)
• M8: 18,560,159 km (0.076 R)
• M9: 19,224,673 km (0.076 R)
• M10: 20,777,349 km (0.104 R)
• M11: 22,412,005 km (0.106 R)
• M12: 25,323,928 km (0.063 R)
• M13: 29,923,613 km (0.083 R)
• M14: 30,721,568 km (0.088 R)
• M15: 36,193,559 km (0.037 R)
• M16: 40,457,398 km (0.099 R)
• M17: 43,430,506 km (0.091 R)
• M18: 47,155,942 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 137.7

Radius: 6.1

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 7.63 AU - 9.43 AU

Year: 17196 Days

Day: 17.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,303,036 km

• M1: 77,342 km (0.1 R)
• M2: 417,378 km (0.11 R)
• M3: 689,497 km (0.114 R)
• M4: 1,217,278 km (0.058 R)
• M5: 2,462,082 km (0.119 R)
• M6: 4,722,206 km (0.12 R)
• M7: 6,410,119 km (0.064 R)
• M8: 7,254,599 km (0.11 R)
• M9: 8,678,322 km (0.096 R)
• M10: 11,588,449 km (0.097 R)
• M11: 12,174,724 km (0.06 R)
• M12: 12,668,845 km (0.07 R)
• M13: 14,718,336 km (0.113 R)
• M14: 18,584,394 km (0.081 R)
• M15: 20,904,806 km (0.087 R)
• M16: 21,296,304 km (0.058 R)
• M17: 21,772,474 km (0.099 R)
• M18: 33,381,418 km (0.108 R)
• M19: 36,001,027 km (0.096 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 196 - 11,864 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit