🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.51 AU - 0.73 AU

Year: 315 Days

Day: 27 Hours

Environment

Temp: -131 °C

Axial Tilt: 25 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.4

Radius: 9.7

Gravity: 6.03 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.72 AU - 1.18 AU

Year: 598 Days

Day: 12.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 65,705,677 km

• M1: 120,576 km (0.101 R)
• M2: 474,375 km (0.079 R)
• M3: 783,145 km (0.1 R)
• M4: 1,138,739 km (0.11 R)
• M5: 1,474,437 km (0.097 R)
• M6: 2,275,084 km (0.109 R)
• M7: 2,783,867 km (0.106 R)
• M8: 3,136,170 km (0.072 R)
• M9: 4,029,269 km (0.059 R)
• M10: 4,391,894 km (0.064 R)
• M11: 5,317,905 km (0.052 R)
• M12: 5,791,083 km (0.104 R)
• M13: 6,235,239 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.9

Radius: 11.3

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.35 AU - 1.65 AU

Year: 1186 Days

Day: 9.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 65,705,677 km

• M1: 141,071 km (0.112 R)
• M2: 507,586 km (0.052 R)
• M3: 1,156,541 km (0.069 R)
• M4: 1,609,075 km (0.108 R)
• M5: 2,726,421 km (0.086 R)
• M6: 3,218,598 km (0.107 R)
• M7: 3,682,950 km (0.067 R)
• M8: 4,954,831 km (0.057 R)
• M9: 5,463,165 km (0.117 R)
• M10: 8,145,305 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 170.5

Radius: 13.4

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.57 AU - 2.35 AU

Year: 1772 Days

Day: 8.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 65,705,677 km

• M1: 169,644 km (0.118 R)
• M2: 738,265 km (0.109 R)
• M3: 2,404,487 km (0.116 R)
• M4: 3,344,560 km (0.087 R)
• M5: 4,015,057 km (0.1 R)
• M6: 5,096,201 km (0.103 R)
• M7: 6,089,681 km (0.055 R)
• M8: 6,513,192 km (0.097 R)
• M9: 8,356,986 km (0.089 R)
• M10: 8,774,663 km (0.036 R)
• M11: 9,288,981 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.1

Radius: 10.2

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 2.17 AU - 2.57 AU

Year: 2356 Days

Day: 6.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,705,677 km

• M1: 128,654 km (0.095 R)
• M2: 566,976 km (0.093 R)
• M3: 1,007,392 km (0.029 R)
• M4: 1,432,100 km (0.095 R)
• M5: 2,021,516 km (0.082 R)
• M6: 2,809,897 km (0.058 R)
• M7: 4,835,302 km (0.117 R)
• M8: 5,344,085 km (0.036 R)
• M9: 5,695,041 km (0.098 R)
• M10: 6,573,929 km (0.097 R)
• M11: 8,568,368 km (0.085 R)
• M12: 9,148,957 km (0.104 R)
• M13: 10,103,840 km (0.061 R)
• M14: 11,814,941 km (0.059 R)
• M15: 12,331,801 km (0.094 R)
• M16: 13,240,608 km (0.088 R)
• M17: 14,060,853 km (0.068 R)
• M18: 14,732,099 km (0.117 R)
• M19: 15,377,614 km (0.074 R)
• M20: 15,993,957 km (0.038 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.9

Radius: 10.9

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.21 AU - 3.05 AU

Year: 2754 Days

Day: 8.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,705,677 km

• M1: 135,536 km (0.104 R)
• M2: 531,970 km (0.111 R)
• M3: 1,110,914 km (0.091 R)
• M4: 1,473,389 km (0.1 R)
• M5: 1,881,792 km (0.061 R)
• M6: 2,447,421 km (0.086 R)
• M7: 3,123,604 km (0.076 R)
• M8: 3,550,705 km (0.09 R)
• M9: 3,958,509 km (0.073 R)
• M10: 4,544,185 km (0.11 R)
• M11: 5,049,078 km (0.116 R)
• M12: 5,422,025 km (0.111 R)
• M13: 6,988,614 km (0.091 R)
• M14: 8,476,365 km (0.112 R)
• M15: 8,904,215 km (0.1 R)
• M16: 9,415,989 km (0.113 R)
• M17: 12,232,917 km (0.116 R)
• M18: 12,994,969 km (0.075 R)
• M19: 14,991,053 km (0.09 R)
• M20: 16,111,990 km (0.085 R)
• M21: 16,667,596 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 486.3

Radius: 10.7

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.61 AU - 3.35 AU

Year: 3322 Days

Day: 10.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 65,705,677 km

• M1: 132,993 km (0.098 R)
• M2: 740,061 km (0.094 R)
• M3: 1,764,357 km (0.076 R)
• M4: 2,788,504 km (0.119 R)
• M5: 3,449,577 km (0.072 R)
• M6: 4,534,162 km (0.103 R)
• M7: 5,524,500 km (0.052 R)
• M8: 5,858,701 km (0.061 R)
• M9: 7,091,837 km (0.071 R)
• M10: 7,994,510 km (0.09 R)
• M11: 8,901,971 km (0.092 R)
• M12: 10,643,589 km (0.077 R)
• M13: 16,102,715 km (0.091 R)
• M14: 17,657,635 km (0.061 R)
• M15: 19,134,615 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.7

Radius: 13.5

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 2.65 AU - 3.61 AU

Year: 3575 Days

Day: 11.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,705,677 km

• M1: 167,849 km (0.069 R)
• M2: 698,622 km (0.056 R)
• M3: 1,227,151 km (0.104 R)
• M4: 1,769,892 km (0.075 R)
• M5: 3,712,122 km (0.105 R)
• M6: 4,554,208 km (0.105 R)
• M7: 5,046,535 km (0.117 R)
• M8: 5,712,245 km (0.107 R)
• M9: 8,172,382 km (0.043 R)
• M10: 11,358,518 km (0.09 R)
• M11: 12,983,599 km (0.103 R)
• M12: 14,184,421 km (0.092 R)
• M13: 16,122,611 km (0.103 R)
• M14: 18,476,833 km (0.117 R)
• M15: 19,352,579 km (0.046 R)
• M16: 20,717,809 km (0.092 R)
• M17: 23,277,877 km (0.065 R)
• M18: 23,931,321 km (0.107 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 869

Radius: 4.6

Gravity: 41.07 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 7.24 AU - 7.92 AU

Year: 13475 Days

Day: 15.4 Hours

Environment

Temp: -231 °C

Axial Tilt: 166.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 65,705,677 km

• M1: 58,942 km (0.117 R)
• M2: 1,069,326 km (0.089 R)
• M3: 1,615,657 km (0.076 R)
• M4: 2,699,793 km (0.093 R)
• M5: 2,959,046 km (0.091 R)
• M6: 4,480,307 km (0.116 R)
• M7: 5,227,249 km (0.109 R)
• M8: 6,253,490 km (0.061 R)
• M9: 6,416,253 km (0.119 R)
• M10: 6,581,708 km (0.086 R)
• M11: 8,348,459 km (0.07 R)
• M12: 9,001,453 km (0.119 R)
• M13: 10,408,421 km (0.119 R)
• M14: 11,283,569 km (0.111 R)
• M15: 11,831,546 km (0.084 R)
• M16: 12,397,176 km (0.112 R)
• M17: 13,718,274 km (0.076 R)
• M18: 13,993,235 km (0.079 R)
• M19: 14,271,936 km (0.105 R)
• M20: 16,404,603 km (0.078 R)
• M21: 17,028,277 km (0.078 R)
• M22: 17,506,242 km (0.093 R)
• M23: 20,385,552 km (0.1 R)
• M24: 20,833,897 km (0.114 R)
• M25: 24,965,341 km (0.106 R)
• M26: 28,261,132 km (0.084 R)
• M27: 29,611,103 km (0.05 R)
• M28: 38,352,107 km (0.06 R)
• M29: 38,760,958 km (0.111 R)
• M30: 40,144,738 km (0.116 R)
• M31: 40,425,384 km (0.107 R)
• M32: 41,417,966 km (0.116 R)
• M33: 42,864,128 km (0.097 R)
• M34: 50,765,289 km (0.088 R)
• M35: 52,253,339 km (0.029 R)
• M36: 59,038,351 km (0.042 R)
• M37: 61,796,936 km (0.058 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 504.7

Radius: 3

Gravity: 56.08 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 7.95 AU - 10.91 AU

Year: 18697 Days

Day: 22 Hours

Environment

Temp: -223 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 65,705,677 km

• M1: 37,998 km (0.091 R)
• M2: 473,627 km (0.103 R)
• M3: 1,014,872 km (0.073 R)
• M4: 1,301,352 km (0.094 R)
• M5: 1,846,038 km (0.116 R)
• M6: 3,075,732 km (0.067 R)
• M7: 3,584,066 km (0.056 R)
• M8: 4,115,288 km (0.06 R)
• M9: 5,185,960 km (0.116 R)
• M10: 5,368,469 km (0.053 R)
• M11: 5,631,163 km (0.091 R)
• M12: 5,746,353 km (0.04 R)
• M13: 6,855,173 km (0.09 R)
• M14: 8,544,881 km (0.088 R)
• M15: 9,270,879 km (0.063 R)
• M16: 9,431,547 km (0.111 R)
• M17: 10,093,069 km (0.036 R)
• M18: 10,493,094 km (0.118 R)
• M19: 11,508,115 km (0.071 R)
• M20: 12,521,491 km (0.097 R)
• M21: 14,869,580 km (0.105 R)
• M22: 16,851,602 km (0.114 R)
• M23: 17,090,958 km (0.049 R)
• M24: 17,251,926 km (0.111 R)
• M25: 22,082,291 km (0.091 R)
• M26: 29,552,311 km (0.034 R)
• M27: 30,251,233 km (0.082 R)
• M28: 34,421,722 km (0.1 R)
• M29: 37,994,269 km (0.064 R)
• M30: 38,131,151 km (0.109 R)
• M31: 40,365,844 km (0.079 R)
• M32: 46,020,045 km (0.092 R)
• M33: 47,116,149 km (0.081 R)
• M34: 48,711,909 km (0.12 R)
• M35: 48,873,325 km (0.082 R)
• M36: 51,506,696 km (0.098 R)
• M37: 62,986,089 km (0.039 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 526 - 16,670 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit