🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.99

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.6 AU - 0.62 AU

Year: 308 Days

Day: 17.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 66.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.57 AU - 0.71 AU

Year: 331 Days

Day: 32.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 0.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.2

Radius: 12.8

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.69 AU - 1.05 AU

Year: 524 Days

Day: 8.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 33,746,485 km

• M1: 159,621 km (0.078 R)
• M2: 597,643 km (0.095 R)
• M3: 1,022,053 km (0.119 R)
• M4: 1,470,397 km (0.071 R)
• M5: 1,874,013 km (0.081 R)
• M6: 2,569,792 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.1

Radius: 10

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.84 AU - 0.92 AU

Year: 533 Days

Day: 13.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 33,746,485 km

• M1: 124,765 km (0.083 R)
• M2: 462,407 km (0.089 R)
• M3: 881,281 km (0.065 R)
• M4: 1,351,018 km (0.085 R)
• M5: 2,476,892 km (0.091 R)
• M6: 3,022,625 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796.8

Radius: 9

Gravity: 9.84 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.03 AU - 1.11 AU

Year: 715 Days

Day: 13.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 33,746,485 km

• M1: 118,631 km (0.09 R)
• M2: 760,556 km (0.119 R)
• M3: 1,151,305 km (0.077 R)
• M4: 1,446,312 km (0.059 R)
• M5: 1,853,966 km (0.117 R)
• M6: 2,316,523 km (0.072 R)
• M7: 2,724,028 km (0.119 R)
• M8: 3,127,493 km (0.089 R)
• M9: 3,570,303 km (0.061 R)
• M10: 4,209,834 km (0.09 R)
• M11: 4,888,858 km (0.087 R)
• M12: 5,172,795 km (0.073 R)
• M13: 6,092,074 km (0.098 R)
• M14: 6,741,329 km (0.104 R)
• M15: 8,127,952 km (0.115 R)
• M16: 8,502,545 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 320.3

Radius: 12.7

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.27 AU - 1.43 AU

Year: 1013 Days

Day: 9.9 Hours

Environment

Temp: -168 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,746,485 km

• M1: 158,125 km (0.103 R)
• M2: 665,112 km (0.078 R)
• M3: 1,154,596 km (0.077 R)
• M4: 1,579,903 km (0.057 R)
• M5: 2,111,574 km (0.12 R)
• M6: 2,807,054 km (0.105 R)
• M7: 3,382,557 km (0.112 R)
• M8: 3,977,209 km (0.077 R)
• M9: 4,673,288 km (0.118 R)
• M10: 5,614,408 km (0.086 R)
• M11: 7,941,702 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.7

Radius: 13.4

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 3.1 AU - 5.06 AU

Year: 5321 Days

Day: 7 Hours

Environment

Temp: -220 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 33,746,485 km

• M1: 174,880 km (0.057 R)
• M2: 615,146 km (0.115 R)
• M3: 1,156,840 km (0.103 R)
• M4: 2,496,489 km (0.089 R)
• M5: 3,464,836 km (0.1 R)
• M6: 4,109,005 km (0.084 R)
• M7: 5,195,684 km (0.113 R)
• M8: 6,300,614 km (0.075 R)
• M9: 7,191,918 km (0.082 R)
• M10: 9,014,768 km (0.092 R)
• M11: 10,747,261 km (0.098 R)
• M12: 11,518,886 km (0.085 R)
• M13: 16,565,571 km (0.117 R)
• M14: 25,358,485 km (0.12 R)
• M15: 27,783,616 km (0.113 R)
• M16: 33,595,493 km (0.044 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.7

Radius: 11.2

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 3.59 AU - 5.67 AU

Year: 6433 Days

Day: 5.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,746,485 km

• M1: 147,354 km (0.1 R)
• M2: 838,197 km (0.072 R)
• M3: 1,483,562 km (0.053 R)
• M4: 2,057,120 km (0.048 R)
• M5: 2,682,888 km (0.071 R)
• M6: 3,201,694 km (0.12 R)
• M7: 5,171,000 km (0.109 R)
• M8: 6,330,383 km (0.11 R)
• M9: 9,115,447 km (0.079 R)
• M10: 10,337,811 km (0.093 R)
• M11: 10,894,016 km (0.111 R)
• M12: 12,423,654 km (0.108 R)
• M13: 13,159,377 km (0.032 R)
• M14: 13,868,471 km (0.03 R)
• M15: 14,488,105 km (0.118 R)
• M16: 18,805,200 km (0.105 R)
• M17: 23,355,369 km (0.115 R)
• M18: 24,720,749 km (0.069 R)
• M19: 26,308,880 km (0.098 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: 226 - 17,508 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit