🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.59 AU - 0.73 AU

Year: 194 Days

Day: 36.5 Hours

Environment

Temp: 130 °C

Axial Tilt: 35 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.72 AU - 0.82 AU

Year: 244 Days

Day: 15.2 Hours

Environment

Temp: 153 °C

Axial Tilt: 48.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.05 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.86 AU - 1.24 AU

Year: 389 Days

Day: 44.9 Hours

Environment

Temp: 17 °C

Axial Tilt: 16 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 51,251,927 km

• M1: 62,382 km (0.11 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.08 AU - 3.3 AU

Year: 1596 Days

Day: 30.8 Hours

Environment

Temp: -99 °C

Axial Tilt: 36.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.43

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.78 AU - 3.32 AU

Year: 1926 Days

Day: 25.6 Hours

Environment

Temp: -104 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.07 AU - 3.41 AU

Year: 2109 Days

Day: 38.1 Hours

Environment

Temp: -109 °C

Axial Tilt: 35.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 51,251,927 km

• M1: 1,496,278 km (0.086 R)
• M2: 2,139,848 km (0.04 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.1

Radius: 9.6

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 5.14 AU - 6.78 AU

Year: 5262 Days

Day: 12.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,251,927 km

• M1: 119,529 km (0.114 R)
• M2: 673,190 km (0.048 R)
• M3: 1,365,230 km (0.071 R)
• M4: 2,027,201 km (0.113 R)
• M5: 2,677,802 km (0.092 R)
• M6: 3,220,693 km (0.098 R)
• M7: 5,147,364 km (0.105 R)
• M8: 7,009,558 km (0.111 R)
• M9: 7,545,866 km (0.081 R)
• M10: 8,383,913 km (0.063 R)
• M11: 11,831,845 km (0.101 R)
• M12: 13,054,957 km (0.054 R)
• M13: 19,341,359 km (0.064 R)
• M14: 19,647,736 km (0.11 R)
• M15: 22,553,076 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 718.5

Radius: 10.9

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 9.46 AU - 12.64 AU

Year: 13284 Days

Day: 5.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 140.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 51,251,927 km

• M1: 135,835 km (0.096 R)
• M2: 477,965 km (0.042 R)
• M3: 1,240,615 km (0.098 R)
• M4: 1,918,892 km (0.082 R)
• M5: 2,546,754 km (0.115 R)
• M6: 3,486,378 km (0.057 R)
• M7: 3,837,335 km (0.04 R)
• M8: 7,086,002 km (0.079 R)
• M9: 8,439,414 km (0.056 R)
• M10: 11,066,951 km (0.111 R)
• M11: 11,415,215 km (0.069 R)
• M12: 12,011,811 km (0.095 R)
• M13: 12,692,033 km (0.032 R)
• M14: 16,186,490 km (0.086 R)
• M15: 19,677,356 km (0.068 R)
• M16: 23,450,214 km (0.036 R)
• M17: 31,109,775 km (0.092 R)
• M18: 33,226,285 km (0.068 R)
• M19: 33,830,810 km (0.112 R)
• M20: 35,062,001 km (0.11 R)
• M21: 42,798,006 km (0.119 R)
• M22: 50,956,775 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 741.2

Radius: 6.9

Gravity: 15.57 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 13.18 AU - 18.7 AU

Year: 23016 Days

Day: 21.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 51,251,927 km

• M1: 85,869 km (0.082 R)
• M2: 320,887 km (0.1 R)
• M3: 593,904 km (0.09 R)
• M4: 1,270,535 km (0.097 R)
• M5: 1,506,750 km (0.069 R)
• M6: 2,841,612 km (0.095 R)
• M7: 4,604,922 km (0.109 R)
• M8: 5,367,272 km (0.114 R)
• M9: 6,166,574 km (0.115 R)
• M10: 6,946,876 km (0.047 R)
• M11: 7,688,433 km (0.101 R)
• M12: 8,158,021 km (0.084 R)
• M13: 8,869,957 km (0.066 R)
• M14: 9,862,389 km (0.091 R)
• M15: 10,416,799 km (0.114 R)
• M16: 12,415,576 km (0.043 R)
• M17: 17,154,537 km (0.109 R)
• M18: 19,062,808 km (0.108 R)
• M19: 21,412,093 km (0.094 R)
• M20: 22,445,515 km (0.095 R)
• M21: 23,081,156 km (0.106 R)
• M22: 23,295,829 km (0.05 R)
• M23: 23,511,699 km (0.103 R)
• M24: 24,947,839 km (0.083 R)
• M25: 26,091,664 km (0.103 R)
• M26: 27,509,852 km (0.054 R)
• M27: 29,732,278 km (0.113 R)
• M28: 32,607,848 km (0.066 R)
• M29: 37,853,198 km (0.051 R)
• M30: 38,602,384 km (0.056 R)
• M31: 43,798,068 km (0.107 R)
• M32: 44,292,190 km (0.109 R)
• M33: 48,908,929 km (0.048 R)
• M34: 50,336,093 km (0.063 R)
• M35: 53,648,340 km (0.102 R)
• M36: 63,185,204 km (0.104 R)
• M37: 64,877,156 km (0.114 R)
• M38: 66,165,792 km (0.116 R)
• M39: 76,617,447 km (0.098 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 84.9

Radius: 3.4

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 15.55 AU - 23.67 AU

Year: 31406 Days

Day: 23.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 51,251,927 km

• M1: 42,336 km (0.042 R)
• M2: 289,472 km (0.083 R)
• M3: 649,255 km (0.052 R)
• M4: 2,491,702 km (0.06 R)
• M5: 2,657,307 km (0.086 R)
• M6: 3,809,211 km (0.103 R)
• M7: 6,875,369 km (0.088 R)
• M8: 11,214,604 km (0.071 R)
• M9: 12,969,387 km (0.106 R)
• M10: 20,877,879 km (0.101 R)
• M11: 25,482,950 km (0.03 R)
• M12: 27,358,159 km (0.107 R)
• M13: 28,588,751 km (0.115 R)
• M14: 51,098,444 km (0.067 R)

Kuiper Belt

Range: 30.3 - 52.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 207 - 15,230 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit