🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.46 AU - 0.6 AU

Year: 253 Days

Day: 12 Hours

Environment

Temp: -121 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.45 AU - 0.65 AU

Year: 268 Days

Day: 27.2 Hours

Environment

Temp: -119 °C

Axial Tilt: 14.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 23.9 Hours

Environment

Temp: -134 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 69,549,339 km

• M1: 44,730 km (0.077 R)
• M2: 775,665 km (0.025 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.6

Radius: 8.9

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.63 AU - 0.73 AU

Year: 368 Days

Day: 13.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 69,549,339 km

• M1: 110,852 km (0.069 R)
• M2: 511,924 km (0.054 R)
• M3: 823,536 km (0.082 R)
• M4: 1,396,047 km (0.095 R)
• M5: 1,716,486 km (0.058 R)
• M6: 2,316,822 km (0.107 R)
• M7: 3,273,201 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368

Radius: 14.7

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.67 AU - 2.09 AU

Year: 1691 Days

Day: 10.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 69,549,339 km

• M1: 182,809 km (0.094 R)
• M2: 707,748 km (0.085 R)
• M3: 1,168,659 km (0.112 R)
• M4: 1,675,945 km (0.098 R)
• M5: 2,188,617 km (0.113 R)
• M6: 4,189,937 km (0.116 R)
• M7: 6,033,731 km (0.045 R)
• M8: 6,747,014 km (0.12 R)
• M9: 7,312,194 km (0.038 R)
• M10: 8,096,835 km (0.104 R)
• M11: 8,937,126 km (0.098 R)
• M12: 10,466,166 km (0.096 R)
• M13: 10,957,446 km (0.04 R)
• M14: 11,463,984 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.1

Radius: 11.1

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 3.68 AU - 4.56 AU

Year: 5486 Days

Day: 9.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 69,549,339 km

• M1: 138,228 km (0.084 R)
• M2: 548,725 km (0.097 R)
• M3: 1,222,813 km (0.11 R)
• M4: 1,643,781 km (0.114 R)
• M5: 2,283,911 km (0.1 R)
• M6: 2,822,313 km (0.064 R)
• M7: 3,810,258 km (0.087 R)
• M8: 4,298,695 km (0.106 R)
• M9: 6,081,303 km (0.082 R)
• M10: 7,120,260 km (0.113 R)
• M11: 7,539,134 km (0.079 R)
• M12: 8,816,102 km (0.091 R)
• M13: 10,541,414 km (0.115 R)
• M14: 10,902,693 km (0.102 R)
• M15: 12,036,645 km (0.064 R)
• M16: 14,153,006 km (0.104 R)
• M17: 15,042,664 km (0.115 R)
• M18: 20,335,287 km (0.058 R)
• M19: 20,825,520 km (0.082 R)
• M20: 22,049,230 km (0.06 R)
• M21: 25,438,370 km (0.104 R)
• M22: 26,419,732 km (0.077 R)
• M23: 27,938,749 km (0.084 R)
• M24: 28,807,464 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 165.9

Radius: 4.7

Gravity: 7.51 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 5.53 AU - 6.27 AU

Year: 9401 Days

Day: 22.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 69,549,339 km

• M1: 71,508 km (0.086 R)
• M2: 494,870 km (0.098 R)
• M3: 700,118 km (0.111 R)
• M4: 2,270,596 km (0.118 R)
• M5: 4,716,073 km (0.066 R)
• M6: 5,670,507 km (0.06 R)
• M7: 6,714,551 km (0.1 R)
• M8: 10,213,645 km (0.098 R)
• M9: 12,669,294 km (0.113 R)
• M10: 20,572,849 km (0.11 R)
• M11: 21,479,861 km (0.098 R)
• M12: 22,486,056 km (0.115 R)
• M13: 25,374,940 km (0.12 R)
• M14: 28,587,555 km (0.072 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 761.8

Radius: 7.1

Gravity: 15.11 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 7.98 AU - 9.24 AU

Year: 16573 Days

Day: 21.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 69,549,339 km

• M1: 89,310 km (0.068 R)
• M2: 352,004 km (0.113 R)
• M3: 635,641 km (0.074 R)
• M4: 1,281,156 km (0.099 R)
• M5: 1,730,399 km (0.097 R)
• M6: 2,516,984 km (0.107 R)
• M7: 3,275,296 km (0.059 R)
• M8: 4,083,124 km (0.028 R)
• M9: 4,567,223 km (0.085 R)
• M10: 5,161,426 km (0.107 R)
• M11: 6,588,290 km (0.083 R)
• M12: 8,310,461 km (0.074 R)
• M13: 9,302,444 km (0.089 R)
• M14: 12,352,296 km (0.116 R)
• M15: 12,749,927 km (0.106 R)
• M16: 13,087,869 km (0.077 R)
• M17: 15,166,980 km (0.084 R)
• M18: 17,873,654 km (0.085 R)
• M19: 18,382,586 km (0.054 R)
• M20: 22,708,957 km (0.113 R)
• M21: 24,844,317 km (0.115 R)
• M22: 29,392,242 km (0.038 R)
• M23: 29,627,260 km (0.072 R)
• M24: 36,458,497 km (0.09 R)
• M25: 38,808,829 km (0.081 R)
• M26: 44,423,686 km (0.115 R)
• M27: 47,424,021 km (0.074 R)
• M28: 49,221,439 km (0.111 R)
• M29: 56,140,191 km (0.119 R)
• M30: 58,893,391 km (0.115 R)
• M31: 60,397,896 km (0.114 R)
• M32: 63,092,154 km (0.047 R)
• M33: 63,679,774 km (0.117 R)
• M34: 64,073,516 km (0.086 R)
• M35: 66,875,484 km (0.104 R)
• M36: 68,926,022 km (0.085 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: 370 - 15,287 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit