🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.42

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.44 AU - 0.72 AU

Year: 290 Days

Day: 36.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 17.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.56 AU - 0.78 AU

Year: 360 Days

Day: 23.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 8.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 744

Radius: 10.8

Gravity: 6.38 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.58 AU - 0.84 AU

Year: 392 Days

Day: 7.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,024,716 km

• M1: 134,339 km (0.1 R)
• M2: 554,859 km (0.107 R)
• M3: 947,553 km (0.108 R)
• M4: 1,881,193 km (0.055 R)
• M5: 2,242,771 km (0.11 R)
• M6: 2,602,255 km (0.078 R)
• M7: 3,011,106 km (0.113 R)
• M8: 3,462,742 km (0.082 R)
• M9: 3,881,915 km (0.105 R)
• M10: 4,252,469 km (0.111 R)
• M11: 4,632,148 km (0.118 R)
• M12: 5,443,867 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880

Radius: 13.1

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.39 AU - 1.87 AU

Year: 1365 Days

Day: 10 Hours

Environment

Temp: -180 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 63,024,716 km

• M1: 162,912 km (0.099 R)
• M2: 610,210 km (0.111 R)
• M3: 1,076,506 km (0.097 R)
• M4: 1,562,251 km (0.088 R)
• M5: 2,218,536 km (0.072 R)
• M6: 2,771,899 km (0.082 R)
• M7: 3,511,960 km (0.076 R)
• M8: 3,946,841 km (0.114 R)
• M9: 4,967,098 km (0.051 R)
• M10: 5,830,876 km (0.071 R)
• M11: 7,048,603 km (0.025 R)
• M12: 8,517,654 km (0.105 R)
• M13: 8,968,243 km (0.037 R)
• M14: 9,530,132 km (0.073 R)
• M15: 10,655,707 km (0.119 R)
• M16: 11,538,484 km (0.106 R)
• M17: 12,053,848 km (0.116 R)
• M18: 13,815,214 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.2

Radius: 11.8

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.68 AU - 1.76 AU

Year: 1480 Days

Day: 10.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 63,024,716 km

• M1: 146,756 km (0.083 R)
• M2: 530,923 km (0.06 R)
• M3: 1,942,379 km (0.096 R)
• M4: 3,219,795 km (0.106 R)
• M5: 3,735,459 km (0.097 R)
• M6: 4,775,613 km (0.073 R)
• M7: 6,371,673 km (0.051 R)
• M8: 8,297,895 km (0.119 R)
• M9: 9,706,957 km (0.055 R)
• M10: 10,652,416 km (0.108 R)
• M11: 12,129,395 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.6

Radius: 12.7

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 2.15 AU - 3.31 AU

Year: 2959 Days

Day: 6.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 63,024,716 km

• M1: 157,975 km (0.094 R)
• M2: 663,317 km (0.115 R)
• M3: 1,123,330 km (0.061 R)
• M4: 3,027,412 km (0.12 R)
• M5: 3,648,243 km (0.106 R)
• M6: 5,298,607 km (0.116 R)
• M7: 5,986,308 km (0.074 R)
• M8: 7,652,529 km (0.118 R)
• M9: 9,976,981 km (0.067 R)
• M10: 11,063,062 km (0.106 R)
• M11: 12,071,950 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.6

Radius: 9.8

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 4.52 AU - 4.98 AU

Year: 6791 Days

Day: 6.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 63,024,716 km

• M1: 121,922 km (0.083 R)
• M2: 440,566 km (0.054 R)
• M3: 944,561 km (0.108 R)
• M4: 1,530,237 km (0.106 R)
• M5: 2,017,776 km (0.096 R)
• M6: 2,511,449 km (0.06 R)
• M7: 3,499,543 km (0.11 R)
• M8: 4,728,190 km (0.12 R)
• M9: 5,935,894 km (0.073 R)
• M10: 7,015,991 km (0.119 R)
• M11: 7,703,842 km (0.056 R)
• M12: 10,119,698 km (0.065 R)
• M13: 10,489,803 km (0.059 R)
• M14: 11,566,010 km (0.069 R)
• M15: 12,904,761 km (0.09 R)
• M16: 16,614,190 km (0.108 R)
• M17: 17,538,854 km (0.106 R)
• M18: 18,804,004 km (0.111 R)
• M19: 20,649,592 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 113.1

Radius: 5.4

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 6.04 AU - 6.74 AU

Year: 10596 Days

Day: 21.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 63,024,716 km

• M1: 67,319 km (0.119 R)
• M2: 263,143 km (0.101 R)
• M3: 739,013 km (0.099 R)
• M4: 927,507 km (0.092 R)
• M5: 1,167,312 km (0.059 R)
• M6: 1,598,902 km (0.094 R)
• M7: 2,389,676 km (0.07 R)
• M8: 2,897,860 km (0.12 R)
• M9: 3,878,624 km (0.029 R)
• M10: 4,456,371 km (0.092 R)
• M11: 4,880,930 km (0.104 R)
• M12: 5,169,654 km (0.083 R)
• M13: 5,359,344 km (0.11 R)
• M14: 5,666,767 km (0.077 R)
• M15: 7,383,253 km (0.098 R)
• M16: 7,623,956 km (0.11 R)
• M17: 8,304,028 km (0.102 R)
• M18: 9,825,439 km (0.101 R)
• M19: 10,032,931 km (0.117 R)
• M20: 10,981,531 km (0.066 R)
• M21: 13,974,236 km (0.114 R)
• M22: 16,751,820 km (0.073 R)
• M23: 21,645,615 km (0.07 R)
• M24: 27,005,707 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 561

Radius: 3

Gravity: 62.33 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 6.97 AU - 10.31 AU

Year: 16660 Days

Day: 20 Hours

Environment

Temp: -226 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 63,024,716 km

• M1: 39,793 km (0.117 R)
• M2: 169,345 km (0.106 R)
• M3: 352,303 km (0.088 R)
• M4: 469,289 km (0.115 R)
• M5: 612,304 km (0.08 R)
• M6: 930,050 km (0.12 R)
• M7: 1,236,277 km (0.074 R)
• M8: 3,385,549 km (0.059 R)
• M9: 5,439,528 km (0.079 R)
• M10: 6,208,312 km (0.111 R)
• M11: 7,090,640 km (0.078 R)
• M12: 7,493,208 km (0.083 R)
• M13: 12,712,229 km (0.12 R)
• M14: 14,760,224 km (0.109 R)
• M15: 15,194,656 km (0.068 R)
• M16: 15,563,265 km (0.093 R)
• M17: 15,862,311 km (0.078 R)
• M18: 16,013,255 km (0.079 R)
• M19: 16,165,097 km (0.081 R)
• M20: 16,626,607 km (0.106 R)
• M21: 17,737,520 km (0.098 R)
• M22: 19,408,828 km (0.09 R)
• M23: 20,017,841 km (0.103 R)
• M24: 22,964,320 km (0.087 R)
• M25: 25,768,832 km (0.063 R)
• M26: 26,503,956 km (0.099 R)
• M27: 30,274,271 km (0.116 R)
• M28: 32,286,811 km (0.082 R)
• M29: 32,529,309 km (0.025 R)
• M30: 32,895,375 km (0.085 R)
• M31: 34,766,545 km (0.118 R)
• M32: 34,893,703 km (0.071 R)
• M33: 37,906,006 km (0.048 R)
• M34: 40,380,953 km (0.065 R)
• M35: 40,803,717 km (0.072 R)
• M36: 41,801,385 km (0.078 R)
• M37: 41,945,298 km (0.119 R)
• M38: 43,993,891 km (0.08 R)
• M39: 44,892,077 km (0.082 R)
• M40: 47,346,529 km (0.082 R)
• M41: 49,566,262 km (0.06 R)
• M42: 61,525,116 km (0.119 R)
• M43: 61,711,216 km (0.119 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 14,621 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit