🌌 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: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.45 AU - 0.67 AU

Year: 275 Days

Day: 22.1 Hours

Environment

Temp: -113 °C

Axial Tilt: 16.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 778.9

Radius: 9.8

Gravity: 8.11 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.8 AU - 0.96 AU

Year: 542 Days

Day: 6.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,911,023 km

• M1: 122,072 km (0.044 R)
• M2: 436,826 km (0.037 R)
• M3: 905,217 km (0.111 R)
• M4: 1,305,840 km (0.092 R)
• M5: 1,627,176 km (0.067 R)
• M6: 2,939,897 km (0.106 R)
• M7: 3,248,667 km (0.092 R)
• M8: 3,890,592 km (0.089 R)
• M9: 5,621,140 km (0.034 R)
• M10: 5,949,956 km (0.113 R)
• M11: 6,686,576 km (0.119 R)
• M12: 6,993,551 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 622.5

Radius: 14.7

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.49 AU - 2.01 AU

Year: 1519 Days

Day: 5.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 46,911,023 km

• M1: 184,454 km (0.07 R)
• M2: 870,061 km (0.103 R)
• M3: 1,386,323 km (0.111 R)
• M4: 1,942,379 km (0.1 R)
• M5: 2,583,705 km (0.109 R)
• M6: 3,551,453 km (0.046 R)
• M7: 4,298,844 km (0.109 R)
• M8: 5,108,468 km (0.112 R)
• M9: 5,859,001 km (0.079 R)
• M10: 6,343,847 km (0.083 R)
• M11: 6,880,754 km (0.091 R)
• M12: 8,735,468 km (0.074 R)
• M13: 9,526,392 km (0.085 R)
• M14: 10,870,230 km (0.115 R)
• M15: 11,498,691 km (0.078 R)
• M16: 12,790,468 km (0.09 R)

Asteroid Belt

Center: 2.23 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589.7

Radius: 9.7

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 2.6 AU - 2.82 AU

Year: 2927 Days

Day: 12.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 46,911,023 km

• M1: 122,221 km (0.081 R)
• M2: 488,287 km (0.077 R)
• M3: 825,631 km (0.11 R)
• M4: 1,174,194 km (0.083 R)
• M5: 1,676,095 km (0.109 R)
• M6: 2,221,528 km (0.112 R)
• M7: 2,786,560 km (0.048 R)
• M8: 3,095,030 km (0.109 R)
• M9: 3,820,580 km (0.099 R)
• M10: 4,161,663 km (0.062 R)
• M11: 4,700,215 km (0.062 R)
• M12: 5,333,463 km (0.081 R)
• M13: 5,916,895 km (0.119 R)
• M14: 6,237,932 km (0.042 R)
• M15: 7,671,379 km (0.092 R)
• M16: 8,821,936 km (0.08 R)
• M17: 9,601,790 km (0.099 R)
• M18: 10,659,895 km (0.081 R)
• M19: 14,395,953 km (0.087 R)
• M20: 15,576,878 km (0.073 R)
• M21: 17,034,710 km (0.088 R)
• M22: 18,695,395 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.8

Radius: 10.5

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 3.31 AU - 4.53 AU

Year: 5091 Days

Day: 14.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 46,911,023 km

• M1: 130,749 km (0.051 R)
• M2: 764,296 km (0.072 R)
• M3: 2,440,240 km (0.093 R)
• M4: 3,570,752 km (0.039 R)
• M5: 4,282,987 km (0.086 R)
• M6: 8,358,183 km (0.083 R)
• M7: 13,855,605 km (0.118 R)
• M8: 15,037,877 km (0.11 R)
• M9: 15,462,436 km (0.11 R)
• M10: 16,286,271 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 751.1

Radius: 11.4

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.37 AU - 5.55 AU

Year: 7247 Days

Day: 9.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 46,911,023 km

• M1: 141,819 km (0.117 R)
• M2: 792,869 km (0.074 R)
• M3: 1,569,730 km (0.079 R)
• M4: 2,203,876 km (0.108 R)
• M5: 3,064,662 km (0.097 R)
• M6: 3,762,686 km (0.118 R)
• M7: 5,990,796 km (0.097 R)
• M8: 6,574,078 km (0.062 R)
• M9: 7,617,224 km (0.099 R)
• M10: 8,056,145 km (0.055 R)
• M11: 16,440,058 km (0.062 R)
• M12: 16,905,158 km (0.119 R)
• M13: 17,931,100 km (0.115 R)
• M14: 18,853,520 km (0.068 R)
• M15: 19,658,507 km (0.112 R)
• M16: 21,573,210 km (0.075 R)
• M17: 28,724,287 km (0.082 R)
• M18: 33,674,780 km (0.06 R)
• M19: 35,738,333 km (0.088 R)
• M20: 39,166,219 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 309.6

Radius: 4.5

Gravity: 15.29 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.25 AU - 7.53 AU

Year: 10596 Days

Day: 15.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 46,911,023 km

• M1: 55,950 km (0.046 R)
• M2: 200,910 km (0.067 R)
• M3: 370,704 km (0.067 R)
• M4: 570,716 km (0.069 R)
• M5: 1,016,218 km (0.079 R)
• M6: 1,440,478 km (0.099 R)
• M7: 1,651,112 km (0.095 R)
• M8: 2,303,209 km (0.057 R)
• M9: 2,517,732 km (0.113 R)
• M10: 2,925,087 km (0.107 R)
• M11: 5,643,729 km (0.089 R)
• M12: 8,017,099 km (0.118 R)
• M13: 9,198,773 km (0.048 R)
• M14: 9,421,524 km (0.11 R)
• M15: 11,232,556 km (0.058 R)
• M16: 12,706,993 km (0.066 R)
• M17: 14,664,930 km (0.054 R)
• M18: 17,014,215 km (0.049 R)
• M19: 17,485,298 km (0.107 R)
• M20: 19,094,223 km (0.093 R)
• M21: 23,172,261 km (0.105 R)
• M22: 24,936,768 km (0.09 R)
• M23: 26,429,306 km (0.047 R)
• M24: 26,608,674 km (0.072 R)
• M25: 26,879,297 km (0.064 R)
• M26: 28,260,085 km (0.05 R)
• M27: 30,271,728 km (0.111 R)
• M28: 32,274,245 km (0.093 R)
• M29: 36,541,225 km (0.1 R)
• M30: 37,099,524 km (0.09 R)
• M31: 37,663,658 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 355.1

Radius: 4.8

Gravity: 15.41 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 7.21 AU - 7.77 AU

Year: 13447 Days

Day: 22 Hours

Environment

Temp: -231 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 46,911,023 km

• M1: 59,690 km (0.068 R)
• M2: 241,002 km (0.067 R)
• M3: 558,598 km (0.099 R)
• M4: 1,121,535 km (0.057 R)
• M5: 1,653,206 km (0.114 R)
• M6: 2,925,237 km (0.042 R)
• M7: 3,172,073 km (0.086 R)
• M8: 3,432,523 km (0.101 R)
• M9: 4,188,292 km (0.072 R)
• M10: 5,673,499 km (0.12 R)
• M11: 8,156,076 km (0.086 R)
• M12: 8,781,993 km (0.084 R)
• M13: 9,731,042 km (0.09 R)
• M14: 9,928,661 km (0.085 R)
• M15: 10,129,122 km (0.108 R)
• M16: 13,285,787 km (0.118 R)
• M17: 13,529,332 km (0.118 R)
• M18: 13,837,653 km (0.067 R)
• M19: 14,921,640 km (0.046 R)
• M20: 15,118,660 km (0.093 R)
• M21: 17,185,055 km (0.072 R)
• M22: 17,692,940 km (0.101 R)
• M23: 20,870,848 km (0.04 R)
• M24: 23,335,173 km (0.076 R)
• M25: 24,409,137 km (0.053 R)
• M26: 25,797,554 km (0.119 R)
• M27: 28,629,592 km (0.1 R)
• M28: 29,755,914 km (0.101 R)
• M29: 31,554,230 km (0.104 R)
• M30: 32,977,205 km (0.083 R)
• M31: 34,901,931 km (0.08 R)
• M32: 40,738,343 km (0.107 R)
• M33: 46,490,680 km (0.116 R)
• M34: 46,911,050 km (0.094 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: 268 - 11,347 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit