🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.39 AU - 0.63 AU

Year: 235 Days

Day: 34.8 Hours

Environment

Temp: -120 °C

Axial Tilt: 37.5 °

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: 123

Radius: 14

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.64 AU - 0.76 AU

Year: 378 Days

Day: 6.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 35,302,255 km

• M1: 174,132 km (0.104 R)
• M2: 675,883 km (0.098 R)
• M3: 1,241,812 km (0.117 R)
• M4: 2,124,888 km (0.065 R)
• M5: 2,836,525 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.1

Radius: 11

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.72 AU - 0.72 AU

Year: 394 Days

Day: 11.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 70.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,302,255 km

• M1: 137,181 km (0.057 R)
• M2: 696,827 km (0.114 R)
• M3: 1,143,077 km (0.12 R)
• M4: 1,487,302 km (0.074 R)
• M5: 1,909,018 km (0.048 R)
• M6: 2,402,392 km (0.086 R)
• M7: 2,774,442 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247.2

Radius: 9.7

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.02 AU - 2.3 AU

Year: 2050 Days

Day: 9.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,302,255 km

• M1: 120,576 km (0.103 R)
• M2: 422,165 km (0.062 R)
• M3: 785,538 km (0.104 R)
• M4: 1,460,374 km (0.091 R)
• M5: 1,810,134 km (0.117 R)
• M6: 2,194,002 km (0.119 R)
• M7: 2,644,442 km (0.091 R)
• M8: 3,286,366 km (0.113 R)
• M9: 3,668,289 km (0.086 R)
• M10: 4,395,036 km (0.102 R)
• M11: 5,439,977 km (0.075 R)
• M12: 6,407,726 km (0.105 R)
• M13: 7,511,907 km (0.098 R)
• M14: 8,095,938 km (0.06 R)
• M15: 9,843,091 km (0.087 R)
• M16: 10,380,746 km (0.087 R)
• M17: 11,240,784 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 475.9

Radius: 11.9

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.59 AU - 3.23 AU

Year: 3205 Days

Day: 5.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,302,255 km

• M1: 148,251 km (0.057 R)
• M2: 549,473 km (0.089 R)
• M3: 951,293 km (0.113 R)
• M4: 1,806,245 km (0.085 R)
• M5: 2,249,653 km (0.096 R)
• M6: 3,136,170 km (0.118 R)
• M7: 4,018,498 km (0.094 R)
• M8: 7,241,135 km (0.087 R)
• M9: 8,742,948 km (0.098 R)
• M10: 10,949,667 km (0.1 R)
• M11: 11,472,960 km (0.1 R)
• M12: 13,098,640 km (0.097 R)
• M13: 13,688,654 km (0.085 R)
• M14: 16,124,556 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.9

Radius: 12.7

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.85 AU - 3.47 AU

Year: 3627 Days

Day: 8.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 35,302,255 km

• M1: 167,250 km (0.073 R)
• M2: 584,928 km (0.041 R)
• M3: 1,218,624 km (0.117 R)
• M4: 1,656,647 km (0.09 R)
• M5: 2,088,536 km (0.091 R)
• M6: 3,395,722 km (0.094 R)
• M7: 3,800,833 km (0.117 R)
• M8: 4,493,322 km (0.078 R)
• M9: 5,321,495 km (0.115 R)
• M10: 6,160,291 km (0.103 R)
• M11: 6,956,899 km (0.113 R)
• M12: 9,211,190 km (0.091 R)
• M13: 10,129,122 km (0.066 R)
• M14: 11,239,288 km (0.078 R)
• M15: 11,778,289 km (0.115 R)
• M16: 13,350,114 km (0.091 R)
• M17: 13,802,049 km (0.05 R)
• M18: 14,950,063 km (0.112 R)
• M19: 15,437,603 km (0.113 R)
• M20: 16,674,478 km (0.051 R)
• M21: 17,376,391 km (0.117 R)
• M22: 18,097,902 km (0.073 R)
• M23: 18,714,394 km (0.063 R)
• M24: 19,600,762 km (0.109 R)
• M25: 20,915,577 km (0.081 R)
• M26: 21,732,232 km (0.117 R)
• M27: 23,647,235 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 486.2

Radius: 8.8

Gravity: 6.28 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 4.89 AU - 5.37 AU

Year: 7502 Days

Day: 7.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 35,302,255 km

• M1: 109,506 km (0.105 R)
• M2: 515,664 km (0.069 R)
• M3: 890,257 km (0.109 R)
• M4: 1,408,913 km (0.094 R)
• M5: 2,534,936 km (0.053 R)
• M6: 3,359,370 km (0.113 R)
• M7: 4,403,862 km (0.079 R)
• M8: 4,832,909 km (0.045 R)
• M9: 5,231,138 km (0.097 R)
• M10: 6,592,629 km (0.081 R)
• M11: 6,869,983 km (0.069 R)
• M12: 8,136,927 km (0.08 R)
• M13: 10,458,986 km (0.116 R)
• M14: 11,421,049 km (0.117 R)
• M15: 11,974,861 km (0.095 R)
• M16: 14,026,296 km (0.114 R)
• M17: 14,370,371 km (0.114 R)
• M18: 16,301,680 km (0.113 R)
• M19: 16,746,135 km (0.099 R)
• M20: 17,395,091 km (0.094 R)
• M21: 18,812,381 km (0.03 R)
• M22: 19,513,696 km (0.096 R)
• M23: 22,028,735 km (0.101 R)
• M24: 25,255,262 km (0.101 R)
• M25: 26,022,400 km (0.109 R)
• M26: 27,962,834 km (0.092 R)
• M27: 28,417,013 km (0.105 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 198 - 16,392 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit