🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.56 AU - 0.64 AU

Year: 305 Days

Day: 37.2 Hours

Environment

Temp: -119 °C

Axial Tilt: 16.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,086,808 km

• M1: 389,702 km (0.091 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 194.3

Radius: 13.3

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.75 AU - 1.05 AU

Year: 560 Days

Day: 14.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 47,086,808 km

• M1: 165,455 km (0.032 R)
• M2: 641,775 km (0.106 R)
• M3: 1,130,362 km (0.081 R)
• M4: 1,709,754 km (0.06 R)
• M5: 2,155,406 km (0.115 R)
• M6: 2,679,597 km (0.107 R)
• M7: 3,112,683 km (0.08 R)
• M8: 3,615,481 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.9

Radius: 9.6

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.1 AU - 2.6 AU

Year: 2363 Days

Day: 6.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,086,808 km

• M1: 119,379 km (0.047 R)
• M2: 886,068 km (0.087 R)
• M3: 1,327,681 km (0.066 R)
• M4: 1,763,908 km (0.106 R)
• M5: 2,352,875 km (0.114 R)
• M6: 3,067,804 km (0.043 R)
• M7: 3,453,317 km (0.098 R)
• M8: 4,057,543 km (0.103 R)
• M9: 7,024,368 km (0.054 R)
• M10: 8,554,754 km (0.077 R)
• M11: 9,261,455 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 887.7

Radius: 14.8

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 2.34 AU - 2.92 AU

Year: 2798 Days

Day: 14.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 47,086,808 km

• M1: 189,541 km (0.113 R)
• M2: 708,196 km (0.119 R)
• M3: 1,429,707 km (0.091 R)
• M4: 1,910,215 km (0.12 R)
• M5: 2,370,378 km (0.094 R)
• M6: 2,856,871 km (0.1 R)
• M7: 4,377,084 km (0.119 R)
• M8: 4,949,146 km (0.048 R)
• M9: 5,442,670 km (0.067 R)
• M10: 6,414,457 km (0.061 R)
• M11: 7,033,194 km (0.12 R)
• M12: 7,821,575 km (0.077 R)
• M13: 8,356,537 km (0.031 R)
• M14: 9,095,850 km (0.119 R)
• M15: 9,802,101 km (0.1 R)
• M16: 11,157,009 km (0.114 R)
• M17: 12,953,380 km (0.108 R)
• M18: 14,335,665 km (0.088 R)
• M19: 15,190,617 km (0.088 R)
• M20: 15,656,764 km (0.097 R)
• M21: 19,800,026 km (0.099 R)
• M22: 20,482,192 km (0.11 R)
• M23: 21,051,712 km (0.119 R)
• M24: 22,222,913 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219

Radius: 8.7

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.6 AU - 3.6 AU

Year: 3581 Days

Day: 12.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,086,808 km

• M1: 121,473 km (0.109 R)
• M2: 636,240 km (0.053 R)
• M3: 1,045,091 km (0.088 R)
• M4: 1,368,521 km (0.1 R)
• M5: 2,470,459 km (0.08 R)
• M6: 4,135,932 km (0.117 R)
• M7: 10,120,146 km (0.089 R)
• M8: 11,032,095 km (0.074 R)
• M9: 12,685,750 km (0.096 R)
• M10: 13,745,202 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362.3

Radius: 10.5

Gravity: 3.29 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 3.4 AU - 5.26 AU

Year: 5911 Days

Day: 12.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,086,808 km

• M1: 130,599 km (0.101 R)
• M2: 608,115 km (0.106 R)
• M3: 1,080,695 km (0.11 R)
• M4: 4,577,545 km (0.099 R)
• M5: 5,825,191 km (0.072 R)
• M6: 7,387,741 km (0.076 R)
• M7: 9,530,282 km (0.116 R)
• M8: 11,275,341 km (0.091 R)
• M9: 11,731,465 km (0.116 R)
• M10: 14,199,231 km (0.074 R)
• M11: 14,570,384 km (0.076 R)
• M12: 16,816,895 km (0.09 R)
• M13: 25,236,862 km (0.079 R)
• M14: 27,057,767 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 268.2

Radius: 5.3

Gravity: 9.55 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 6.63 AU - 8.21 AU

Year: 13259 Days

Day: 17.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 47,086,808 km

• M1: 65,973 km (0.096 R)
• M2: 329,115 km (0.104 R)
• M3: 497,712 km (0.082 R)
• M4: 791,672 km (0.043 R)
• M5: 1,264,850 km (0.103 R)
• M6: 1,893,161 km (0.056 R)
• M7: 2,103,795 km (0.071 R)
• M8: 2,348,238 km (0.092 R)
• M9: 4,342,078 km (0.092 R)
• M10: 7,687,386 km (0.118 R)
• M11: 7,891,437 km (0.108 R)
• M12: 8,833,006 km (0.068 R)
• M13: 9,991,193 km (0.108 R)
• M14: 10,783,613 km (0.079 R)
• M15: 10,988,113 km (0.088 R)
• M16: 12,889,203 km (0.119 R)
• M17: 13,235,672 km (0.114 R)
• M18: 14,129,220 km (0.077 R)
• M19: 16,168,837 km (0.103 R)
• M20: 17,398,232 km (0.083 R)
• M21: 20,273,204 km (0.076 R)
• M22: 24,843,868 km (0.114 R)
• M23: 27,036,973 km (0.081 R)
• M24: 28,180,499 km (0.073 R)
• M25: 30,157,435 km (0.039 R)
• M26: 30,461,717 km (0.092 R)
• M27: 30,768,093 km (0.051 R)
• M28: 36,066,850 km (0.068 R)
• M29: 40,326,051 km (0.1 R)
• M30: 41,067,009 km (0.061 R)
• M31: 41,816,943 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 339.7

Radius: 3.1

Gravity: 35.35 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 5.72 AU - 9.54 AU

Year: 13826 Days

Day: 16.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 47,086,808 km

• M1: 39,344 km (0.103 R)
• M2: 173,234 km (0.114 R)
• M3: 277,953 km (0.105 R)
• M4: 432,188 km (0.105 R)
• M5: 894,446 km (0.108 R)
• M6: 1,839,156 km (0.046 R)
• M7: 2,215,395 km (0.115 R)
• M8: 2,579,666 km (0.064 R)
• M9: 3,727,231 km (0.049 R)
• M10: 3,831,650 km (0.069 R)
• M11: 5,241,760 km (0.114 R)
• M12: 6,502,421 km (0.116 R)
• M13: 7,243,080 km (0.045 R)
• M14: 8,479,357 km (0.113 R)
• M15: 9,265,793 km (0.065 R)
• M16: 11,197,251 km (0.095 R)
• M17: 12,372,043 km (0.059 R)
• M18: 17,092,006 km (0.114 R)
• M19: 18,719,780 km (0.055 R)
• M20: 20,529,017 km (0.078 R)
• M21: 25,414,135 km (0.085 R)
• M22: 28,224,032 km (0.082 R)
• M23: 32,210,067 km (0.059 R)
• M24: 38,004,292 km (0.107 R)
• M25: 39,366,081 km (0.091 R)
• M26: 40,376,615 km (0.065 R)
• M27: 45,551,205 km (0.115 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 214 - 13,801 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit