🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.33

Radius: 1.12

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.49 AU - 0.69 AU

Year: 297 Days

Day: 17.4 Hours

Environment

Temp: -119 °C

Axial Tilt: 37.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,951,632 km

• M1: 26,778 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 22.7 Hours

Environment

Temp: -125 °C

Axial Tilt: 61 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 830

Radius: 11.7

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.8 AU - 0.9 AU

Year: 514 Days

Day: 14.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 84,951,632 km

• M1: 145,559 km (0.111 R)
• M2: 585,077 km (0.11 R)
• M3: 949,647 km (0.104 R)
• M4: 1,393,504 km (0.062 R)
• M5: 2,098,858 km (0.094 R)
• M6: 2,848,493 km (0.087 R)
• M7: 3,255,549 km (0.115 R)
• M8: 3,932,928 km (0.091 R)
• M9: 4,516,210 km (0.074 R)
• M10: 4,990,884 km (0.117 R)
• M11: 6,022,212 km (0.065 R)
• M12: 6,500,027 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.9

Radius: 12.7

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.06 AU - 1.6 AU

Year: 1006 Days

Day: 12.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 84,951,632 km

• M1: 158,275 km (0.08 R)
• M2: 564,134 km (0.053 R)
• M3: 959,820 km (0.069 R)
• M4: 1,380,489 km (0.079 R)
• M5: 1,898,696 km (0.102 R)
• M6: 2,441,587 km (0.071 R)
• M7: 2,877,066 km (0.104 R)
• M8: 3,364,606 km (0.086 R)
• M9: 3,970,926 km (0.078 R)
• M10: 4,667,304 km (0.09 R)
• M11: 5,344,534 km (0.083 R)
• M12: 6,348,634 km (0.102 R)
• M13: 7,573,991 km (0.116 R)
• M14: 8,007,076 km (0.078 R)
• M15: 9,523,400 km (0.065 R)
• M16: 9,938,235 km (0.084 R)
• M17: 10,677,698 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.6

Radius: 13.5

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 2.03 AU - 2.39 AU

Year: 2155 Days

Day: 14.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 84,951,632 km

• M1: 167,849 km (0.071 R)
• M2: 609,312 km (0.078 R)
• M3: 1,120,039 km (0.111 R)
• M4: 1,627,176 km (0.085 R)
• M5: 2,322,058 km (0.084 R)
• M6: 2,868,390 km (0.072 R)
• M7: 3,410,831 km (0.106 R)
• M8: 4,929,100 km (0.097 R)
• M9: 5,947,712 km (0.103 R)
• M10: 6,507,358 km (0.076 R)
• M11: 7,028,856 km (0.09 R)
• M12: 8,022,186 km (0.07 R)
• M13: 8,594,547 km (0.101 R)
• M14: 9,077,898 km (0.078 R)
• M15: 10,573,578 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880

Radius: 9.3

Gravity: 10.17 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 3.27 AU - 4.41 AU

Year: 4936 Days

Day: 14.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 84,951,632 km

• M1: 122,670 km (0.086 R)
• M2: 604,375 km (0.046 R)
• M3: 1,239,269 km (0.086 R)
• M4: 1,923,380 km (0.091 R)
• M5: 2,238,283 km (0.086 R)
• M6: 3,031,601 km (0.058 R)
• M7: 3,679,808 km (0.069 R)
• M8: 4,623,322 km (0.059 R)
• M9: 5,336,605 km (0.115 R)
• M10: 7,549,457 km (0.119 R)
• M11: 7,844,763 km (0.051 R)
• M12: 8,657,079 km (0.118 R)
• M13: 9,145,815 km (0.071 R)
• M14: 11,383,052 km (0.072 R)
• M15: 12,474,218 km (0.11 R)
• M16: 14,128,322 km (0.039 R)
• M17: 28,897,970 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 123

Radius: 8

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 7.1 AU - 7.46 AU

Year: 12886 Days

Day: 16.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 84,951,632 km

• M1: 99,483 km (0.111 R)
• M2: 482,902 km (0.114 R)
• M3: 1,014,124 km (0.086 R)
• M4: 1,601,296 km (0.087 R)
• M5: 2,007,753 km (0.095 R)
• M6: 2,727,020 km (0.059 R)
• M7: 4,089,707 km (0.063 R)
• M8: 6,327,840 km (0.096 R)
• M9: 6,857,716 km (0.03 R)
• M10: 7,744,233 km (0.084 R)
• M11: 8,389,449 km (0.073 R)
• M12: 13,674,592 km (0.114 R)
• M13: 14,223,466 km (0.065 R)
• M14: 15,423,690 km (0.036 R)
• M15: 26,025,542 km (0.097 R)
• M16: 27,641,947 km (0.097 R)
• M17: 29,324,175 km (0.117 R)
• M18: 31,925,831 km (0.032 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 84.6

Radius: 6.8

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 8.49 AU - 8.67 AU

Year: 16487 Days

Day: 17.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 84,951,632 km

• M1: 85,869 km (0.097 R)
• M2: 327,171 km (0.073 R)
• M3: 1,055,413 km (0.052 R)
• M4: 1,345,034 km (0.069 R)
• M5: 2,324,901 km (0.081 R)
• M6: 2,876,767 km (0.051 R)
• M7: 4,948,099 km (0.081 R)
• M8: 5,287,986 km (0.108 R)
• M9: 6,077,862 km (0.063 R)
• M10: 11,143,545 km (0.078 R)
• M11: 11,877,323 km (0.053 R)
• M12: 12,905,210 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 112.3

Radius: 4.7

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 7.66 AU - 12.44 AU

Year: 20901 Days

Day: 18.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 84,951,632 km

• M1: 58,642 km (0.06 R)
• M2: 221,106 km (0.085 R)
• M3: 1,297,612 km (0.079 R)
• M4: 1,611,468 km (0.116 R)
• M5: 3,010,059 km (0.103 R)
• M6: 3,731,420 km (0.09 R)
• M7: 4,619,283 km (0.08 R)
• M8: 4,854,152 km (0.094 R)
• M9: 5,158,883 km (0.068 R)
• M10: 5,639,690 km (0.098 R)
• M11: 6,149,968 km (0.071 R)
• M12: 7,379,813 km (0.078 R)
• M13: 7,579,376 km (0.08 R)
• M14: 7,906,397 km (0.081 R)
• M15: 8,285,328 km (0.104 R)
• M16: 8,544,731 km (0.099 R)
• M17: 9,034,215 km (0.076 R)
• M18: 11,819,578 km (0.076 R)
• M19: 12,148,245 km (0.035 R)
• M20: 13,643,625 km (0.092 R)
• M21: 14,005,203 km (0.093 R)
• M22: 20,933,828 km (0.114 R)
• M23: 21,414,935 km (0.07 R)
• M24: 24,812,452 km (0.03 R)
• M25: 27,203,475 km (0.104 R)
• M26: 28,259,636 km (0.111 R)
• M27: 31,801,964 km (0.105 R)
• M28: 32,118,663 km (0.106 R)
• M29: 37,359,375 km (0.097 R)
• M30: 40,489,711 km (0.074 R)
• M31: 42,372,849 km (0.109 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 847.4

Radius: 4.4

Gravity: 43.77 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 8.51 AU - 11.79 AU

Year: 21213 Days

Day: 17.1 Hours

Environment

Temp: -233 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 84,951,632 km

• M1: 57,296 km (0.108 R)
• M2: 249,978 km (0.119 R)
• M3: 486,642 km (0.109 R)
• M4: 934,239 km (0.032 R)
• M5: 1,087,726 km (0.097 R)
• M6: 1,479,074 km (0.092 R)
• M7: 1,616,854 km (0.104 R)
• M8: 1,763,161 km (0.057 R)
• M9: 2,733,602 km (0.081 R)
• M10: 3,852,893 km (0.108 R)
• M11: 4,787,132 km (0.114 R)
• M12: 5,129,561 km (0.085 R)
• M13: 5,569,978 km (0.07 R)
• M14: 5,948,759 km (0.117 R)
• M15: 7,091,089 km (0.063 R)
• M16: 8,535,755 km (0.044 R)
• M17: 8,982,006 km (0.087 R)
• M18: 9,210,890 km (0.112 R)
• M19: 11,053,487 km (0.108 R)
• M20: 12,982,253 km (0.053 R)
• M21: 14,646,828 km (0.048 R)
• M22: 16,877,482 km (0.044 R)
• M23: 17,579,545 km (0.089 R)
• M24: 18,209,651 km (0.044 R)
• M25: 20,190,327 km (0.046 R)
• M26: 22,414,399 km (0.113 R)
• M27: 23,477,291 km (0.119 R)
• M28: 23,693,909 km (0.098 R)
• M29: 29,929,597 km (0.094 R)
• M30: 37,322,425 km (0.099 R)
• M31: 38,511,728 km (0.101 R)
• M32: 40,187,972 km (0.108 R)
• M33: 40,809,402 km (0.075 R)
• M34: 52,745,965 km (0.036 R)
• M35: 56,152,608 km (0.075 R)
• M36: 57,124,246 km (0.116 R)
• M37: 62,151,034 km (0.097 R)
• M38: 62,981,751 km (0.107 R)
• M39: 63,190,589 km (0.1 R)
• M40: 67,683,462 km (0.1 R)
• M41: 69,449,465 km (0.108 R)
• M42: 74,697,658 km (0.083 R)
• M43: 75,166,049 km (0.12 R)
• M44: 81,188,260 km (0.082 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 314 - 12,479 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit