🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.49 AU - 0.63 AU

Year: 275 Days

Day: 36.4 Hours

Environment

Temp: -122 °C

Axial Tilt: 6.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,047,066 km

• M1: 69,563 km (0.096 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.55 AU - 0.63 AU

Year: 297 Days

Day: 21.1 Hours

Environment

Temp: -128 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.9

Radius: 11.6

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.58 AU - 0.88 AU

Year: 409 Days

Day: 8.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,047,066 km

• M1: 144,362 km (0.12 R)
• M2: 519,703 km (0.1 R)
• M3: 924,365 km (0.09 R)
• M4: 1,856,809 km (0.105 R)
• M5: 2,630,529 km (0.099 R)
• M6: 3,107,597 km (0.11 R)
• M7: 3,710,027 km (0.061 R)
• M8: 4,125,161 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 151.3

Radius: 12.3

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.65 AU - 0.97 AU

Year: 478 Days

Day: 8.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 130.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,047,066 km

• M1: 153,039 km (0.103 R)
• M2: 555,756 km (0.04 R)
• M3: 976,575 km (0.062 R)
• M4: 1,362,089 km (0.058 R)
• M5: 1,755,232 km (0.041 R)
• M6: 2,225,568 km (0.117 R)
• M7: 2,667,330 km (0.094 R)
• M8: 3,216,055 km (0.065 R)
• M9: 3,687,139 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 415.7

Radius: 11.7

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 2.1 AU - 2.7 AU

Year: 2439 Days

Day: 9.7 Hours

Environment

Temp: -194 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,047,066 km

• M1: 145,559 km (0.104 R)
• M2: 595,250 km (0.037 R)
• M3: 1,083,837 km (0.105 R)
• M4: 1,464,414 km (0.103 R)
• M5: 1,925,175 km (0.104 R)
• M6: 2,302,012 km (0.089 R)
• M7: 3,192,269 km (0.11 R)
• M8: 3,690,879 km (0.09 R)
• M9: 4,416,578 km (0.086 R)
• M10: 4,782,494 km (0.096 R)
• M11: 5,279,608 km (0.115 R)
• M12: 6,226,712 km (0.112 R)
• M13: 7,283,621 km (0.105 R)
• M14: 8,212,325 km (0.116 R)
• M15: 9,785,197 km (0.096 R)
• M16: 10,375,211 km (0.094 R)
• M17: 11,818,681 km (0.077 R)
• M18: 13,476,375 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 836.7

Radius: 12.8

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 4.46 AU - 4.58 AU

Year: 6304 Days

Day: 7.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,047,066 km

• M1: 159,471 km (0.056 R)
• M2: 677,678 km (0.098 R)
• M3: 1,151,904 km (0.118 R)
• M4: 1,633,609 km (0.097 R)
• M5: 2,436,052 km (0.097 R)
• M6: 4,385,910 km (0.117 R)
• M7: 4,904,566 km (0.114 R)
• M8: 6,131,718 km (0.082 R)
• M9: 7,707,581 km (0.032 R)
• M10: 8,180,909 km (0.038 R)
• M11: 9,405,517 km (0.026 R)
• M12: 16,496,157 km (0.117 R)
• M13: 18,028,937 km (0.098 R)
• M14: 18,513,784 km (0.099 R)
• M15: 19,727,471 km (0.102 R)
• M16: 22,551,580 km (0.116 R)
• M17: 26,425,865 km (0.088 R)
• M18: 30,234,627 km (0.096 R)
• M19: 35,141,587 km (0.11 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 626.1

Radius: 5.9

Gravity: 17.99 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 5.92 AU - 6.02 AU

Year: 9569 Days

Day: 22.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 56,047,066 km

• M1: 74,201 km (0.076 R)
• M2: 658,679 km (0.047 R)
• M3: 951,143 km (0.119 R)
• M4: 1,243,009 km (0.111 R)
• M5: 2,212,702 km (0.086 R)
• M6: 2,413,762 km (0.08 R)
• M7: 3,136,319 km (0.105 R)
• M8: 3,320,026 km (0.106 R)
• M9: 4,237,958 km (0.093 R)
• M10: 4,815,705 km (0.104 R)
• M11: 5,060,896 km (0.101 R)
• M12: 5,510,138 km (0.107 R)
• M13: 5,744,558 km (0.091 R)
• M14: 7,056,980 km (0.113 R)
• M15: 7,908,791 km (0.042 R)
• M16: 8,250,622 km (0.089 R)
• M17: 10,309,836 km (0.057 R)
• M18: 13,820,300 km (0.093 R)
• M19: 16,010,712 km (0.081 R)
• M20: 17,046,827 km (0.097 R)
• M21: 19,251,750 km (0.078 R)
• M22: 27,965,228 km (0.097 R)
• M23: 29,464,497 km (0.117 R)
• M24: 35,190,805 km (0.077 R)
• M25: 37,650,942 km (0.076 R)
• M26: 41,106,054 km (0.102 R)
• M27: 42,389,604 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 622.9

Radius: 4

Gravity: 38.93 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 7.32 AU - 7.52 AU

Year: 13259 Days

Day: 23.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 56,047,066 km

• M1: 49,816 km (0.043 R)
• M2: 203,453 km (0.087 R)
• M3: 484,398 km (0.045 R)
• M4: 1,151,904 km (0.074 R)
• M5: 1,429,707 km (0.056 R)
• M6: 1,622,987 km (0.099 R)
• M7: 2,136,258 km (0.066 R)
• M8: 2,492,001 km (0.092 R)
• M9: 2,932,417 km (0.096 R)
• M10: 3,171,176 km (0.082 R)
• M11: 4,885,118 km (0.111 R)
• M12: 5,118,491 km (0.052 R)
• M13: 5,535,869 km (0.106 R)
• M14: 5,938,138 km (0.095 R)
• M15: 7,304,415 km (0.108 R)
• M16: 9,674,494 km (0.108 R)
• M17: 11,845,309 km (0.072 R)
• M18: 13,202,610 km (0.093 R)
• M19: 14,118,449 km (0.07 R)
• M20: 15,857,823 km (0.11 R)
• M21: 16,891,694 km (0.025 R)
• M22: 17,891,157 km (0.095 R)
• M23: 26,318,005 km (0.116 R)
• M24: 26,725,660 km (0.07 R)
• M25: 27,868,887 km (0.108 R)
• M26: 28,612,986 km (0.12 R)
• M27: 29,044,127 km (0.114 R)
• M28: 29,698,917 km (0.092 R)
• M29: 32,184,187 km (0.091 R)
• M30: 32,533,498 km (0.08 R)
• M31: 33,121,118 km (0.093 R)
• M32: 33,477,161 km (0.111 R)
• M33: 34,804,543 km (0.071 R)
• M34: 42,108,809 km (0.041 R)
• M35: 42,666,360 km (0.117 R)
• M36: 47,606,979 km (0.084 R)
• M37: 47,909,017 km (0.112 R)
• M38: 51,473,785 km (0.117 R)
• M39: 52,431,959 km (0.041 R)
• M40: 53,891,436 km (0.109 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 233 - 15,119 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit