🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 24.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 7.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 62,704,097 km

• M1: 21,692 km (0.092 R)
• M2: 45,328 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.4

Radius: 14

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.54 AU - 0.84 AU

Year: 376 Days

Day: 9.5 Hours

Environment

Temp: -144 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,704,097 km

• M1: 174,282 km (0.059 R)
• M2: 662,569 km (0.04 R)
• M3: 1,234,930 km (0.108 R)
• M4: 1,795,174 km (0.04 R)
• M5: 2,312,933 km (0.066 R)
• M6: 2,759,183 km (0.117 R)
• M7: 3,511,212 km (0.117 R)
• M8: 4,619,881 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.9

Radius: 11.6

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.66 AU - 0.92 AU

Year: 461 Days

Day: 7.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,704,097 km

• M1: 144,512 km (0.098 R)
• M2: 533,765 km (0.104 R)
• M3: 945,608 km (0.094 R)
• M4: 1,517,222 km (0.117 R)
• M5: 2,364,843 km (0.043 R)
• M6: 3,028,160 km (0.111 R)
• M7: 3,761,638 km (0.1 R)
• M8: 4,258,902 km (0.045 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 320.5

Radius: 13.6

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.75 AU - 2.01 AU

Year: 1691 Days

Day: 13.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 62,704,097 km

• M1: 169,345 km (0.109 R)
• M2: 849,566 km (0.12 R)
• M3: 1,709,305 km (0.06 R)
• M4: 2,256,085 km (0.108 R)
• M5: 3,601,419 km (0.091 R)
• M6: 5,387,169 km (0.111 R)
• M7: 6,349,981 km (0.095 R)
• M8: 7,151,077 km (0.093 R)
• M9: 8,314,051 km (0.059 R)
• M10: 9,480,017 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.1

Radius: 12

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 4.41 AU - 4.59 AU

Year: 6262 Days

Day: 7 Hours

Environment

Temp: -220 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,704,097 km

• M1: 150,795 km (0.098 R)
• M2: 615,595 km (0.11 R)
• M3: 1,299,108 km (0.072 R)
• M4: 1,966,314 km (0.117 R)
• M5: 4,205,944 km (0.062 R)
• M6: 5,481,416 km (0.107 R)
• M7: 8,310,311 km (0.065 R)
• M8: 12,836,096 km (0.087 R)
• M9: 13,815,363 km (0.09 R)
• M10: 15,215,450 km (0.117 R)
• M11: 20,176,564 km (0.096 R)
• M12: 21,839,045 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.6

Radius: 13.9

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 4.18 AU - 6.6 AU

Year: 8209 Days

Day: 10.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 62,704,097 km

• M1: 172,935 km (0.087 R)
• M2: 794,664 km (0.089 R)
• M3: 1,387,221 km (0.08 R)
• M4: 2,015,981 km (0.026 R)
• M5: 2,513,244 km (0.111 R)
• M6: 3,219,047 km (0.089 R)
• M7: 3,666,345 km (0.115 R)
• M8: 4,885,268 km (0.106 R)
• M9: 5,479,770 km (0.12 R)
• M10: 6,601,754 km (0.086 R)
• M11: 8,691,636 km (0.111 R)
• M12: 11,041,071 km (0.05 R)
• M13: 11,702,144 km (0.082 R)
• M14: 12,335,541 km (0.117 R)
• M15: 13,272,173 km (0.109 R)
• M16: 14,196,539 km (0.117 R)
• M17: 14,735,091 km (0.087 R)
• M18: 18,398,593 km (0.106 R)
• M19: 26,921,633 km (0.091 R)
• M20: 27,378,654 km (0.114 R)
• M21: 32,753,407 km (0.074 R)
• M22: 35,852,626 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 543

Radius: 7.5

Gravity: 9.65 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 7.34 AU - 10.04 AU

Year: 16805 Days

Day: 22.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 62,704,097 km

• M1: 99,034 km (0.11 R)
• M2: 344,973 km (0.077 R)
• M3: 664,813 km (0.091 R)
• M4: 958,773 km (0.082 R)
• M5: 1,573,321 km (0.086 R)
• M6: 3,188,230 km (0.083 R)
• M7: 5,176,236 km (0.069 R)
• M8: 6,147,874 km (0.087 R)
• M9: 6,974,402 km (0.1 R)
• M10: 8,595,594 km (0.078 R)
• M11: 9,897,545 km (0.107 R)
• M12: 11,446,032 km (0.062 R)
• M13: 13,281,897 km (0.103 R)
• M14: 16,429,437 km (0.12 R)
• M15: 17,367,266 km (0.116 R)
• M16: 30,264,846 km (0.076 R)
• M17: 30,962,870 km (0.047 R)
• M18: 48,847,594 km (0.113 R)
• M19: 50,943,610 km (0.085 R)
• M20: 51,930,956 km (0.053 R)
• M21: 54,284,430 km (0.096 R)
• M22: 56,707,915 km (0.091 R)
• M23: 60,477,034 km (0.108 R)
• M24: 62,142,357 km (0.093 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 416 - 20,037 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit