🌌 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: 1.67

Radius: 1.23

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.54 AU - 0.58 AU

Year: 275 Days

Day: 19.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 18.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.53 AU - 0.65 AU

Year: 297 Days

Day: 46.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 41.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,955,940 km

• M1: 77,193 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.4

Radius: 8.7

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.67 AU - 0.71 AU

Year: 376 Days

Day: 14.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,955,940 km

• M1: 108,159 km (0.118 R)
• M2: 463,305 km (0.089 R)
• M3: 806,482 km (0.119 R)
• M4: 1,256,173 km (0.064 R)
• M5: 1,887,327 km (0.048 R)
• M6: 2,385,338 km (0.091 R)
• M7: 4,071,904 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232.7

Radius: 10.9

Gravity: 1.96 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.67 AU - 2.55 AU

Year: 2011 Days

Day: 14.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 57,955,940 km

• M1: 136,583 km (0.084 R)
• M2: 719,416 km (0.112 R)
• M3: 3,396,620 km (0.072 R)
• M4: 3,992,917 km (0.115 R)
• M5: 4,530,123 km (0.05 R)
• M6: 7,250,261 km (0.114 R)
• M7: 7,734,509 km (0.101 R)
• M8: 8,432,234 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 635.3

Radius: 12.1

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 3.06 AU - 3.38 AU

Year: 3790 Days

Day: 9.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 57,955,940 km

• M1: 151,393 km (0.045 R)
• M2: 578,196 km (0.034 R)
• M3: 1,024,895 km (0.119 R)
• M4: 2,125,786 km (0.049 R)
• M5: 4,704,255 km (0.056 R)
• M6: 5,198,825 km (0.105 R)
• M7: 7,050,847 km (0.106 R)
• M8: 7,700,401 km (0.038 R)
• M9: 10,130,917 km (0.072 R)
• M10: 11,129,633 km (0.101 R)
• M11: 14,013,132 km (0.073 R)
• M12: 14,779,222 km (0.072 R)
• M13: 16,451,128 km (0.103 R)
• M14: 19,283,614 km (0.101 R)
• M15: 24,336,881 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.4

Radius: 13.2

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.5 AU - 4.44 AU

Year: 5189 Days

Day: 5.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 57,955,940 km

• M1: 164,558 km (0.078 R)
• M2: 762,052 km (0.072 R)
• M3: 1,644,230 km (0.116 R)
• M4: 5,744,708 km (0.112 R)
• M5: 6,530,845 km (0.107 R)
• M6: 7,421,700 km (0.08 R)
• M7: 8,772,569 km (0.044 R)
• M8: 10,067,787 km (0.056 R)
• M9: 12,341,824 km (0.094 R)
• M10: 12,934,830 km (0.089 R)
• M11: 13,495,224 km (0.093 R)
• M12: 14,829,188 km (0.115 R)
• M13: 15,958,203 km (0.052 R)
• M14: 17,387,761 km (0.097 R)
• M15: 19,096,318 km (0.045 R)
• M16: 20,500,593 km (0.108 R)
• M17: 22,918,693 km (0.097 R)
• M18: 24,891,889 km (0.063 R)
• M19: 25,839,741 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.3

Radius: 13.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 3.95 AU - 4.25 AU

Year: 5446 Days

Day: 9.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 57,955,940 km

• M1: 172,187 km (0.071 R)
• M2: 693,985 km (0.106 R)
• M3: 1,308,084 km (0.112 R)
• M4: 2,127,282 km (0.08 R)
• M5: 2,821,565 km (0.033 R)
• M6: 3,433,720 km (0.063 R)
• M7: 4,439,167 km (0.076 R)
• M8: 4,974,877 km (0.091 R)
• M9: 6,037,770 km (0.115 R)
• M10: 7,468,823 km (0.086 R)
• M11: 8,026,524 km (0.087 R)
• M12: 9,985,209 km (0.11 R)
• M13: 13,257,064 km (0.095 R)
• M14: 15,187,176 km (0.116 R)
• M15: 16,684,202 km (0.092 R)
• M16: 17,869,914 km (0.074 R)
• M17: 19,476,147 km (0.114 R)
• M18: 22,566,240 km (0.056 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 592.9

Radius: 7.5

Gravity: 10.54 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 5.92 AU - 9.68 AU

Year: 14291 Days

Day: 17.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 172.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 57,955,940 km

• M1: 93,349 km (0.113 R)
• M2: 465,549 km (0.087 R)
• M3: 743,651 km (0.115 R)
• M4: 1,817,016 km (0.07 R)
• M5: 2,172,610 km (0.099 R)
• M6: 2,574,131 km (0.085 R)
• M7: 4,319,190 km (0.06 R)
• M8: 5,615,904 km (0.051 R)
• M9: 5,873,661 km (0.086 R)
• M10: 6,572,732 km (0.051 R)
• M11: 7,068,799 km (0.113 R)
• M12: 8,418,471 km (0.077 R)
• M13: 8,805,630 km (0.115 R)
• M14: 12,159,315 km (0.101 R)
• M15: 14,017,470 km (0.088 R)
• M16: 15,837,627 km (0.073 R)
• M17: 17,418,428 km (0.053 R)
• M18: 18,691,506 km (0.089 R)
• M19: 21,332,507 km (0.108 R)
• M20: 21,870,910 km (0.107 R)
• M21: 22,602,892 km (0.113 R)
• M22: 25,293,559 km (0.065 R)
• M23: 25,795,610 km (0.104 R)
• M24: 27,236,536 km (0.111 R)
• M25: 28,083,559 km (0.032 R)
• M26: 29,386,856 km (0.044 R)
• M27: 31,072,226 km (0.105 R)
• M28: 34,757,420 km (0.08 R)
• M29: 35,128,871 km (0.101 R)
• M30: 41,160,209 km (0.094 R)
• M31: 46,785,836 km (0.11 R)
• M32: 48,614,670 km (0.107 R)
• M33: 55,054,859 km (0.118 R)
• M34: 56,578,363 km (0.062 R)
• M35: 57,092,382 km (0.095 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 171 - 10,864 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit