🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.49 AU - 0.55 AU

Year: 246 Days

Day: 14.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.52

Radius: 1.18

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.46 AU - 0.68 AU

Year: 282 Days

Day: 23.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 11.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,178,189 km

• M1: 39,643 km (0.114 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.55 AU - 0.77 AU

Year: 352 Days

Day: 21.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 10 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 159.8

Radius: 13.6

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.61 AU - 0.95 AU

Year: 452 Days

Day: 9.9 Hours

Environment

Temp: -143 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 70,178,189 km

• M1: 169,195 km (0.051 R)
• M2: 728,841 km (0.099 R)
• M3: 1,220,270 km (0.029 R)
• M4: 2,033,783 km (0.116 R)
• M5: 2,490,655 km (0.118 R)
• M6: 2,943,488 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 517.1

Radius: 10.3

Gravity: 4.87 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.74 AU - 4.38 AU

Year: 4406 Days

Day: 13.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 70,178,189 km

• M1: 129,253 km (0.103 R)
• M2: 454,478 km (0.115 R)
• M3: 1,391,410 km (0.069 R)
• M4: 1,786,049 km (0.09 R)
• M5: 2,212,104 km (0.064 R)
• M6: 2,639,954 km (0.086 R)
• M7: 3,140,957 km (0.086 R)
• M8: 3,622,961 km (0.06 R)
• M9: 5,613,810 km (0.096 R)
• M10: 5,976,884 km (0.088 R)
• M11: 9,990,445 km (0.052 R)
• M12: 12,953,829 km (0.073 R)
• M13: 19,138,804 km (0.107 R)
• M14: 19,964,434 km (0.092 R)
• M15: 21,822,889 km (0.119 R)
• M16: 23,433,609 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.2

Radius: 11

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 3.4 AU - 5.6 AU

Year: 6262 Days

Day: 6.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 70,178,189 km

• M1: 197,020 km (0.048 R)
• M2: 595,848 km (0.069 R)
• M3: 961,017 km (0.056 R)
• M4: 1,327,382 km (0.035 R)
• M5: 2,110,228 km (0.111 R)
• M6: 2,799,425 km (0.053 R)
• M7: 4,373,045 km (0.118 R)
• M8: 4,911,597 km (0.056 R)
• M9: 6,090,877 km (0.08 R)
• M10: 7,664,647 km (0.069 R)
• M11: 11,219,392 km (0.099 R)
• M12: 11,838,577 km (0.074 R)
• M13: 13,725,904 km (0.068 R)
• M14: 14,489,751 km (0.056 R)
• M15: 15,339,317 km (0.043 R)
• M16: 17,767,440 km (0.095 R)
• M17: 20,864,265 km (0.112 R)
• M18: 24,147,191 km (0.097 R)
• M19: 26,908,767 km (0.047 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 704.4

Radius: 4.9

Gravity: 29.34 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 6.95 AU - 7.57 AU

Year: 12833 Days

Day: 19.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 70,178,189 km

• M1: 61,036 km (0.076 R)
• M2: 245,939 km (0.073 R)
• M3: 792,121 km (0.077 R)
• M4: 1,007,242 km (0.101 R)
• M5: 1,340,846 km (0.112 R)
• M6: 2,264,762 km (0.064 R)
• M7: 2,550,045 km (0.069 R)
• M8: 3,217,401 km (0.094 R)
• M9: 4,662,218 km (0.112 R)
• M10: 5,836,262 km (0.111 R)
• M11: 6,571,984 km (0.117 R)
• M12: 7,721,045 km (0.059 R)
• M13: 8,461,854 km (0.101 R)
• M14: 9,198,324 km (0.059 R)
• M15: 10,083,644 km (0.089 R)
• M16: 14,399,693 km (0.073 R)
• M17: 17,691,295 km (0.085 R)
• M18: 22,722,271 km (0.073 R)
• M19: 23,187,820 km (0.109 R)
• M20: 31,528,499 km (0.076 R)
• M21: 32,458,549 km (0.09 R)
• M22: 41,805,275 km (0.115 R)
• M23: 43,210,597 km (0.099 R)
• M24: 51,827,434 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 968.4

Radius: 3

Gravity: 107.6 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 7.8 AU - 8.24 AU

Year: 14899 Days

Day: 23.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 70,178,189 km

• M1: 37,848 km (0.098 R)
• M2: 191,336 km (0.095 R)
• M3: 668,553 km (0.117 R)
• M4: 815,159 km (0.056 R)
• M5: 1,056,161 km (0.116 R)
• M6: 1,730,399 km (0.106 R)
• M7: 2,126,833 km (0.096 R)
• M8: 2,335,672 km (0.118 R)
• M9: 2,993,304 km (0.077 R)
• M10: 5,271,081 km (0.04 R)
• M11: 6,218,185 km (0.108 R)
• M12: 6,820,167 km (0.095 R)
• M13: 8,188,688 km (0.025 R)
• M14: 13,026,983 km (0.109 R)
• M15: 13,581,542 km (0.09 R)
• M16: 20,386,450 km (0.089 R)
• M17: 21,897,837 km (0.116 R)
• M18: 22,189,254 km (0.102 R)
• M19: 22,979,131 km (0.088 R)
• M20: 23,992,656 km (0.114 R)
• M21: 24,302,473 km (0.111 R)
• M22: 25,141,568 km (0.047 R)
• M23: 25,675,632 km (0.115 R)
• M24: 28,115,723 km (0.111 R)
• M25: 29,157,074 km (0.108 R)
• M26: 29,984,500 km (0.076 R)
• M27: 33,579,486 km (0.096 R)
• M28: 46,225,293 km (0.11 R)
• M29: 54,477,261 km (0.119 R)
• M30: 64,449,755 km (0.06 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: 177 - 14,852 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit