🌌 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: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.53 AU - 0.59 AU

Year: 271 Days

Day: 17.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 63.6

Radius: 10.6

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.69 AU - 0.89 AU

Year: 453 Days

Day: 7.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 29,909,273 km

• M1: 131,796 km (0.059 R)
• M2: 585,975 km (0.066 R)
• M3: 950,844 km (0.069 R)
• M4: 1,457,233 km (0.072 R)
• M5: 2,522,818 km (0.031 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.1

Radius: 12.3

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.64 AU - 4.16 AU

Year: 4048 Days

Day: 6.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 29,909,273 km

• M1: 153,039 km (0.076 R)
• M2: 570,865 km (0.118 R)
• M3: 1,074,861 km (0.042 R)
• M4: 1,628,822 km (0.115 R)
• M5: 2,039,318 km (0.065 R)
• M6: 2,948,724 km (0.091 R)
• M7: 3,767,323 km (0.099 R)
• M8: 4,434,978 km (0.091 R)
• M9: 6,058,115 km (0.082 R)
• M10: 6,533,089 km (0.074 R)
• M11: 7,738,997 km (0.116 R)
• M12: 8,140,967 km (0.116 R)
• M13: 8,786,481 km (0.088 R)
• M14: 11,084,454 km (0.1 R)
• M15: 11,596,229 km (0.077 R)
• M16: 13,139,480 km (0.075 R)
• M17: 13,668,309 km (0.102 R)
• M18: 14,303,202 km (0.109 R)
• M19: 15,196,152 km (0.1 R)
• M20: 15,680,849 km (0.105 R)
• M21: 16,125,902 km (0.096 R)
• M22: 16,989,531 km (0.065 R)
• M23: 17,459,119 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.8

Radius: 12.5

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 3.57 AU - 4.41 AU

Year: 5146 Days

Day: 6.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,909,273 km

• M1: 155,432 km (0.088 R)
• M2: 684,709 km (0.07 R)
• M3: 1,340,696 km (0.109 R)
• M4: 1,757,925 km (0.067 R)
• M5: 2,772,198 km (0.089 R)
• M6: 3,336,781 km (0.11 R)
• M7: 4,095,541 km (0.11 R)
• M8: 4,993,876 km (0.102 R)
• M9: 5,534,074 km (0.062 R)
• M10: 9,214,331 km (0.107 R)
• M11: 11,559,278 km (0.076 R)
• M12: 11,952,421 km (0.115 R)
• M13: 12,817,845 km (0.086 R)
• M14: 15,076,623 km (0.064 R)
• M15: 15,725,279 km (0.082 R)
• M16: 18,776,178 km (0.072 R)
• M17: 20,298,337 km (0.098 R)
• M18: 23,430,318 km (0.114 R)
• M19: 32,351,437 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.1

Radius: 10.5

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.55 AU - 5.37 AU

Year: 6082 Days

Day: 6.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 29,909,273 km

• M1: 131,646 km (0.045 R)
• M2: 614,997 km (0.04 R)
• M3: 1,173,745 km (0.105 R)
• M4: 1,948,213 km (0.046 R)
• M5: 2,608,388 km (0.093 R)
• M6: 3,156,665 km (0.071 R)
• M7: 3,563,720 km (0.084 R)
• M8: 4,327,866 km (0.12 R)
• M9: 4,784,589 km (0.105 R)
• M10: 5,197,928 km (0.078 R)
• M11: 7,699,204 km (0.059 R)
• M12: 8,268,424 km (0.113 R)
• M13: 8,829,416 km (0.095 R)
• M14: 9,642,032 km (0.058 R)
• M15: 11,630,786 km (0.04 R)
• M16: 12,561,584 km (0.113 R)
• M17: 14,371,119 km (0.067 R)
• M18: 15,131,226 km (0.096 R)
• M19: 18,500,469 km (0.105 R)
• M20: 18,856,812 km (0.08 R)
• M21: 19,338,966 km (0.065 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 442

Radius: 7.8

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 5.53 AU - 7.93 AU

Year: 11273 Days

Day: 23.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 29,909,273 km

• M1: 97,089 km (0.09 R)
• M2: 1,028,037 km (0.116 R)
• M3: 1,392,307 km (0.086 R)
• M4: 1,691,204 km (0.11 R)
• M5: 2,220,631 km (0.071 R)
• M6: 2,495,741 km (0.104 R)
• M7: 4,454,426 km (0.107 R)
• M8: 5,047,881 km (0.068 R)
• M9: 8,257,354 km (0.053 R)
• M10: 8,519,150 km (0.034 R)
• M11: 9,198,175 km (0.111 R)
• M12: 9,961,423 km (0.066 R)
• M13: 10,612,174 km (0.107 R)
• M14: 21,835,604 km (0.081 R)
• M15: 25,509,878 km (0.084 R)
• M16: 26,253,678 km (0.082 R)
• M17: 29,780,299 km (0.088 R)
• M18: 33,169,588 km (0.076 R)
• M19: 34,279,305 km (0.114 R)
• M20: 39,334,217 km (0.074 R)
• M21: 40,577,076 km (0.106 R)
• M22: 42,749,836 km (0.109 R)
• M23: 44,730,362 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.2

Radius: 7.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 7.15 AU - 9.19 AU

Year: 15078 Days

Day: 19.4 Hours

Environment

Temp: -228 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,909,273 km

• M1: 134,189 km (0.074 R)
• M2: 407,654 km (0.061 R)
• M3: 661,971 km (0.038 R)
• M4: 957,127 km (0.03 R)
• M5: 2,164,382 km (0.041 R)
• M6: 6,186,770 km (0.104 R)
• M7: 6,962,285 km (0.118 R)
• M8: 7,585,210 km (0.04 R)
• M9: 10,630,873 km (0.044 R)
• M10: 12,176,219 km (0.11 R)
• M11: 12,824,128 km (0.084 R)
• M12: 18,664,279 km (0.063 R)
• M13: 20,830,905 km (0.036 R)
• M14: 21,326,224 km (0.097 R)
• M15: 23,691,516 km (0.059 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 516 - 12,258 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit