🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.49 AU - 0.67 AU

Year: 290 Days

Day: 15.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 36.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.5

Radius: 13.4

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.59 AU - 0.83 AU

Year: 392 Days

Day: 9 Hours

Environment

Temp: -131 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,225,822 km

• M1: 166,652 km (0.091 R)
• M2: 704,756 km (0.103 R)
• M3: 1,139,337 km (0.115 R)
• M4: 1,670,859 km (0.029 R)
• M5: 2,186,373 km (0.086 R)
• M6: 2,655,213 km (0.104 R)
• M7: 3,161,601 km (0.085 R)
• M8: 3,687,737 km (0.085 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.8

Radius: 14.1

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 1.02 AU - 1.1 AU

Year: 716 Days

Day: 14.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,225,822 km

• M1: 175,927 km (0.107 R)
• M2: 659,876 km (0.096 R)
• M3: 1,110,914 km (0.117 R)
• M4: 1,636,601 km (0.071 R)
• M5: 2,075,521 km (0.089 R)
• M6: 2,544,061 km (0.071 R)
• M7: 3,406,643 km (0.071 R)
• M8: 3,859,625 km (0.089 R)
• M9: 4,762,448 km (0.087 R)
• M10: 5,910,163 km (0.105 R)
• M11: 6,530,097 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.2

Radius: 11.5

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.92 AU - 1.54 AU

Year: 895 Days

Day: 10.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,225,822 km

• M1: 143,016 km (0.101 R)
• M2: 538,852 km (0.116 R)
• M3: 918,232 km (0.083 R)
• M4: 1,387,969 km (0.105 R)
• M5: 2,024,209 km (0.111 R)
• M6: 2,516,236 km (0.11 R)
• M7: 3,846,012 km (0.06 R)
• M8: 4,239,005 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.9

Radius: 10.3

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.04 AU - 1.7 AU

Year: 1052 Days

Day: 9.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,225,822 km

• M1: 131,347 km (0.088 R)
• M2: 573,857 km (0.047 R)
• M3: 1,124,976 km (0.091 R)
• M4: 1,726,359 km (0.078 R)
• M5: 2,498,284 km (0.119 R)
• M6: 3,540,682 km (0.047 R)
• M7: 4,137,428 km (0.117 R)
• M8: 5,475,581 km (0.082 R)
• M9: 8,200,955 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.8

Radius: 9.7

Gravity: 10.46 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.99 AU - 2.09 AU

Year: 1911 Days

Day: 11.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 33,225,822 km

• M1: 129,402 km (0.11 R)
• M2: 463,753 km (0.079 R)
• M3: 1,030,879 km (0.107 R)
• M4: 1,498,671 km (0.062 R)
• M5: 1,810,733 km (0.092 R)
• M6: 2,154,060 km (0.101 R)
• M7: 3,167,735 km (0.044 R)
• M8: 4,067,716 km (0.115 R)
• M9: 4,493,172 km (0.074 R)
• M10: 5,175,488 km (0.108 R)
• M11: 6,078,461 km (0.116 R)
• M12: 7,255,946 km (0.101 R)
• M13: 7,610,193 km (0.103 R)
• M14: 7,945,143 km (0.095 R)
• M15: 8,481,900 km (0.105 R)
• M16: 9,593,263 km (0.1 R)
• M17: 10,647,479 km (0.113 R)
• M18: 10,989,908 km (0.076 R)
• M19: 11,537,137 km (0.073 R)
• M20: 12,517,602 km (0.088 R)
• M21: 12,856,441 km (0.035 R)
• M22: 13,730,392 km (0.067 R)
• M23: 14,273,582 km (0.104 R)
• M24: 17,102,926 km (0.083 R)
• M25: 17,520,603 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 609.8

Radius: 8.1

Gravity: 9.29 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 3.88 AU - 4.98 AU

Year: 6117 Days

Day: 12 Hours

Environment

Temp: -222 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,225,822 km

• M1: 101,278 km (0.115 R)
• M2: 373,695 km (0.093 R)
• M3: 859,440 km (0.102 R)
• M4: 1,116,449 km (0.101 R)
• M5: 1,947,166 km (0.041 R)
• M6: 2,903,246 km (0.046 R)
• M7: 4,341,480 km (0.114 R)
• M8: 5,642,084 km (0.064 R)
• M9: 6,203,076 km (0.114 R)
• M10: 6,766,461 km (0.106 R)
• M11: 7,113,678 km (0.079 R)
• M12: 8,304,926 km (0.112 R)
• M13: 8,989,336 km (0.1 R)
• M14: 12,828,765 km (0.098 R)
• M15: 13,797,711 km (0.073 R)
• M16: 15,400,951 km (0.046 R)
• M17: 17,835,507 km (0.099 R)
• M18: 22,521,062 km (0.077 R)
• M19: 23,061,559 km (0.07 R)
• M20: 24,898,621 km (0.12 R)
• M21: 25,979,017 km (0.067 R)
• M22: 27,003,762 km (0.111 R)
• M23: 32,731,416 km (0.066 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 14,058 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit