🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.53 AU - 0.57 AU

Year: 150 Days

Day: 25 Hours

Environment

Temp: 237 °C

Axial Tilt: 26 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.07

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 1.01 AU - 1.47 AU

Year: 509 Days

Day: 20.9 Hours

Environment

Temp: -18 °C

Axial Tilt: 6.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.42 AU - 1.98 AU

Year: 818 Days

Day: 21.7 Hours

Environment

Temp: -60 °C

Axial Tilt: 16.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 87,585,220 km

• M1: 108,758 km (0.09 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.44 AU - 2.38 AU

Year: 974 Days

Day: 28.3 Hours

Environment

Temp: -64 °C

Axial Tilt: 18.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 444.4

Radius: 14.2

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 9.68 AU - 11.36 AU

Year: 12589 Days

Day: 8.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 87,585,220 km

• M1: 176,525 km (0.081 R)
• M2: 669,151 km (0.091 R)
• M3: 1,414,149 km (0.104 R)
• M4: 1,908,869 km (0.103 R)
• M5: 2,658,055 km (0.081 R)
• M6: 4,627,960 km (0.081 R)
• M7: 5,744,109 km (0.112 R)
• M8: 7,111,883 km (0.116 R)
• M9: 8,065,868 km (0.12 R)
• M10: 8,551,463 km (0.111 R)
• M11: 10,381,643 km (0.1 R)
• M12: 10,957,146 km (0.12 R)
• M13: 12,694,576 km (0.102 R)
• M14: 13,353,256 km (0.079 R)
• M15: 13,846,629 km (0.117 R)
• M16: 15,874,428 km (0.081 R)
• M17: 16,639,472 km (0.087 R)
• M18: 17,501,904 km (0.103 R)
• M19: 19,238,286 km (0.062 R)
• M20: 22,788,543 km (0.047 R)
• M21: 24,671,830 km (0.101 R)
• M22: 30,093,856 km (0.103 R)
• M23: 40,726,524 km (0.112 R)
• M24: 42,690,296 km (0.102 R)
• M25: 44,579,567 km (0.115 R)
• M26: 46,806,331 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561.6

Radius: 14.9

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 8.23 AU - 12.89 AU

Year: 12661 Days

Day: 13.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 87,585,220 km

• M1: 185,950 km (0.099 R)
• M2: 813,663 km (0.071 R)
• M3: 1,528,441 km (0.115 R)
• M4: 3,609,647 km (0.108 R)
• M5: 4,258,603 km (0.117 R)
• M6: 4,858,191 km (0.085 R)
• M7: 6,883,447 km (0.103 R)
• M8: 7,584,313 km (0.115 R)
• M9: 9,772,780 km (0.106 R)
• M10: 11,886,299 km (0.075 R)
• M11: 19,149,126 km (0.05 R)
• M12: 30,535,169 km (0.052 R)
• M13: 38,325,778 km (0.102 R)
• M14: 40,660,252 km (0.11 R)
• M15: 41,325,215 km (0.084 R)
• M16: 42,268,430 km (0.096 R)
• M17: 43,225,856 km (0.114 R)
• M18: 47,787,843 km (0.038 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 998.7

Radius: 4.6

Gravity: 47.2 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 11.3 AU - 17.78 AU

Year: 20456 Days

Day: 23.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 87,585,220 km

• M1: 57,745 km (0.041 R)
• M2: 232,325 km (0.094 R)
• M3: 534,364 km (0.071 R)
• M4: 879,486 km (0.114 R)
• M5: 1,376,151 km (0.044 R)
• M6: 1,917,546 km (0.039 R)
• M7: 2,952,314 km (0.106 R)
• M8: 5,091,115 km (0.107 R)
• M9: 6,313,180 km (0.102 R)
• M10: 6,919,650 km (0.119 R)
• M11: 7,162,896 km (0.091 R)
• M12: 10,166,821 km (0.118 R)
• M13: 13,088,168 km (0.096 R)
• M14: 14,779,073 km (0.073 R)
• M15: 15,264,368 km (0.111 R)
• M16: 20,616,232 km (0.042 R)
• M17: 20,917,522 km (0.115 R)
• M18: 25,913,642 km (0.114 R)
• M19: 27,944,733 km (0.088 R)
• M20: 28,810,904 km (0.102 R)
• M21: 32,726,928 km (0.072 R)
• M22: 38,631,705 km (0.074 R)
• M23: 41,434,272 km (0.113 R)
• M24: 42,074,850 km (0.074 R)
• M25: 47,091,914 km (0.1 R)
• M26: 49,923,951 km (0.071 R)
• M27: 53,620,814 km (0.117 R)
• M28: 75,101,572 km (0.083 R)
• M29: 80,436,830 km (0.063 R)
• M30: 83,450,779 km (0.109 R)
• M31: 86,278,926 km (0.101 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 17,019 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit