🌌 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: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.49 AU - 0.63 AU

Year: 271 Days

Day: 13.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,092,649 km

• M1: 13,015 km (0.053 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.45

Radius: 1.16

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.48 AU - 0.72 AU

Year: 300 Days

Day: 39.4 Hours

Environment

Temp: -122 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.2

Radius: 11

Gravity: 7.56 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.69 AU - 0.81 AU

Year: 419 Days

Day: 7.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,092,649 km

• M1: 136,882 km (0.107 R)
• M2: 506,538 km (0.059 R)
• M3: 883,675 km (0.109 R)
• M4: 1,255,126 km (0.115 R)
• M5: 1,608,028 km (0.104 R)
• M6: 1,961,677 km (0.083 R)
• M7: 2,611,829 km (0.055 R)
• M8: 3,233,558 km (0.117 R)
• M9: 3,688,186 km (0.05 R)
• M10: 4,199,212 km (0.11 R)
• M11: 4,665,808 km (0.055 R)
• M12: 5,054,314 km (0.087 R)
• M13: 5,617,400 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.7

Radius: 13.5

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.78 AU - 0.96 AU

Year: 524 Days

Day: 14.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 29,092,649 km

• M1: 167,849 km (0.095 R)
• M2: 707,897 km (0.055 R)
• M3: 1,377,946 km (0.084 R)
• M4: 2,221,229 km (0.061 R)
• M5: 3,544,722 km (0.091 R)
• M6: 4,105,863 km (0.118 R)
• M7: 4,680,469 km (0.06 R)
• M8: 5,130,459 km (0.079 R)
• M9: 5,712,095 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433.5

Radius: 12.7

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.21 AU - 1.37 AU

Year: 946 Days

Day: 13.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,092,649 km

• M1: 164,408 km (0.042 R)
• M2: 565,779 km (0.095 R)
• M3: 1,102,836 km (0.071 R)
• M4: 1,591,572 km (0.108 R)
• M5: 2,284,958 km (0.087 R)
• M6: 3,096,526 km (0.107 R)
• M7: 3,667,691 km (0.113 R)
• M8: 4,781,746 km (0.053 R)
• M9: 5,604,385 km (0.085 R)
• M10: 6,050,037 km (0.116 R)
• M11: 6,816,726 km (0.085 R)
• M12: 7,623,956 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446.3

Radius: 14.8

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.4 AU - 2.12 AU

Year: 1508 Days

Day: 5.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 29,092,649 km

• M1: 185,352 km (0.097 R)
• M2: 715,676 km (0.109 R)
• M3: 1,457,382 km (0.056 R)
• M4: 1,928,616 km (0.098 R)
• M5: 2,866,146 km (0.113 R)
• M6: 3,351,441 km (0.11 R)
• M7: 3,957,312 km (0.082 R)
• M8: 4,419,271 km (0.103 R)
• M9: 4,994,325 km (0.107 R)
• M10: 6,619,407 km (0.111 R)
• M11: 7,125,347 km (0.065 R)
• M12: 9,147,760 km (0.117 R)
• M13: 9,807,786 km (0.103 R)
• M14: 10,596,167 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 97.5

Radius: 8.9

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 2.46 AU - 2.8 AU

Year: 2754 Days

Day: 6.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,092,649 km

• M1: 110,702 km (0.105 R)
• M2: 667,954 km (0.041 R)
• M3: 979,567 km (0.061 R)
• M4: 1,509,443 km (0.105 R)
• M5: 1,873,863 km (0.068 R)
• M6: 2,177,247 km (0.058 R)
• M7: 2,513,543 km (0.111 R)
• M8: 2,794,787 km (0.117 R)
• M9: 3,799,487 km (0.059 R)
• M10: 4,933,738 km (0.059 R)
• M11: 5,279,159 km (0.112 R)
• M12: 5,661,083 km (0.042 R)
• M13: 6,169,865 km (0.088 R)
• M14: 9,414,194 km (0.117 R)
• M15: 10,067,937 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458.4

Radius: 11.7

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 3.51 AU - 3.51 AU

Year: 4246 Days

Day: 8.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 29,092,649 km

• M1: 145,708 km (0.051 R)
• M2: 583,581 km (0.1 R)
• M3: 1,006,943 km (0.066 R)
• M4: 1,552,527 km (0.112 R)
• M5: 2,164,382 km (0.063 R)
• M6: 2,748,711 km (0.077 R)
• M7: 3,811,006 km (0.098 R)
• M8: 4,391,146 km (0.113 R)
• M9: 5,306,685 km (0.104 R)
• M10: 8,358,631 km (0.106 R)
• M11: 8,968,093 km (0.033 R)
• M12: 9,530,282 km (0.066 R)
• M13: 9,996,878 km (0.109 R)
• M14: 11,102,705 km (0.084 R)
• M15: 11,973,066 km (0.105 R)
• M16: 12,748,132 km (0.077 R)
• M17: 14,247,252 km (0.062 R)
• M18: 18,475,187 km (0.074 R)
• M19: 19,079,413 km (0.051 R)
• M20: 20,906,452 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696.5

Radius: 9.4

Gravity: 7.88 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 4.45 AU - 5.13 AU

Year: 6769 Days

Day: 9.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 29,092,649 km

• M1: 119,678 km (0.12 R)
• M2: 870,510 km (0.077 R)
• M3: 3,124,052 km (0.053 R)
• M4: 4,774,865 km (0.109 R)
• M5: 5,600,346 km (0.095 R)
• M6: 7,269,559 km (0.089 R)
• M7: 11,867,001 km (0.099 R)
• M8: 12,767,729 km (0.071 R)
• M9: 14,705,022 km (0.076 R)
• M10: 16,961,706 km (0.036 R)
• M11: 21,450,240 km (0.118 R)
• M12: 26,406,418 km (0.078 R)
• M13: 27,210,207 km (0.118 R)
• M14: 29,528,675 km (0.102 R)
• M15: 35,408,619 km (0.093 R)
• M16: 36,167,230 km (0.089 R)
• M17: 36,825,909 km (0.102 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 225.7

Radius: 10

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 4.46 AU - 6.46 AU

Year: 8238 Days

Day: 12.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 78.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,092,649 km

• M1: 124,914 km (0.077 R)
• M2: 436,975 km (0.059 R)
• M3: 970,741 km (0.03 R)
• M4: 1,293,274 km (0.119 R)
• M5: 1,923,230 km (0.108 R)
• M6: 2,286,005 km (0.115 R)
• M7: 2,944,086 km (0.094 R)
• M8: 3,702,099 km (0.092 R)
• M9: 4,437,073 km (0.079 R)
• M10: 7,129,087 km (0.092 R)
• M11: 7,471,815 km (0.103 R)
• M12: 8,339,632 km (0.064 R)
• M13: 8,915,136 km (0.115 R)
• M14: 11,910,683 km (0.094 R)
• M15: 23,727,120 km (0.094 R)
• M16: 27,222,474 km (0.077 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 497 - 19,174 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit