🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.49 AU - 0.59 AU

Year: 168 Days

Day: 25.2 Hours

Environment

Temp: 134 °C

Axial Tilt: 34.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.55 AU - 0.79 AU

Year: 233 Days

Day: 13.2 Hours

Environment

Temp: 8 °C

Axial Tilt: 2.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 87,438,182 km

• M1: 116,686 km (0.041 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.69 AU - 0.79 AU

Year: 270 Days

Day: 28.6 Hours

Environment

Temp: 3 °C

Axial Tilt: 31.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.14

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.71 AU - 0.85 AU

Year: 292 Days

Day: 12.3 Hours

Environment

Temp: -12 °C

Axial Tilt: 2.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 87,438,182 km

• M1: 241,750 km (0.071 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.67 AU - 1.87 AU

Year: 1000 Days

Day: 13.8 Hours

Environment

Temp: -105 °C

Axial Tilt: 20.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 87,438,182 km

• M1: 1,249,441 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.2

Radius: 11.6

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 4.24 AU - 4.36 AU

Year: 3786 Days

Day: 5.7 Hours

Environment

Temp: -169 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 87,438,182 km

• M1: 146,157 km (0.116 R)
• M2: 777,011 km (0.073 R)
• M3: 1,181,374 km (0.091 R)
• M4: 1,836,314 km (0.071 R)
• M5: 3,021,279 km (0.11 R)
• M6: 3,743,088 km (0.111 R)
• M7: 4,681,217 km (0.057 R)
• M8: 5,867,378 km (0.083 R)
• M9: 7,159,156 km (0.116 R)
• M10: 8,825,526 km (0.046 R)
• M11: 10,012,436 km (0.075 R)
• M12: 10,662,887 km (0.118 R)
• M13: 11,652,029 km (0.113 R)
• M14: 12,494,713 km (0.052 R)
• M15: 13,593,809 km (0.108 R)
• M16: 15,456,302 km (0.104 R)
• M17: 15,983,784 km (0.055 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.7

Radius: 10.9

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.35 AU - 6.43 AU

Year: 6069 Days

Day: 13.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 87,438,182 km

• M1: 135,536 km (0.032 R)
• M2: 496,815 km (0.072 R)
• M3: 1,052,870 km (0.038 R)
• M4: 1,393,055 km (0.114 R)
• M5: 2,114,865 km (0.12 R)
• M6: 3,680,706 km (0.081 R)
• M7: 5,838,954 km (0.062 R)
• M8: 8,160,265 km (0.111 R)
• M9: 9,823,344 km (0.088 R)
• M10: 11,814,641 km (0.108 R)
• M11: 13,640,932 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 790.1

Radius: 3.3

Gravity: 72.55 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 9.72 AU - 12.78 AU

Year: 16021 Days

Day: 20.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 87,438,182 km

• M1: 118,482 km (0.035 R)
• M2: 302,188 km (0.102 R)
• M3: 455,675 km (0.062 R)
• M4: 669,002 km (0.087 R)
• M5: 773,421 km (0.03 R)
• M6: 1,028,037 km (0.049 R)
• M7: 1,471,594 km (0.06 R)
• M8: 1,583,643 km (0.111 R)
• M9: 2,402,392 km (0.12 R)
• M10: 2,627,088 km (0.103 R)
• M11: 3,041,175 km (0.086 R)
• M12: 6,143,536 km (0.116 R)
• M13: 6,606,392 km (0.087 R)
• M14: 7,182,792 km (0.098 R)
• M15: 13,255,119 km (0.101 R)
• M16: 15,425,186 km (0.09 R)
• M17: 26,471,792 km (0.09 R)
• M18: 26,690,504 km (0.106 R)
• M19: 27,020,966 km (0.082 R)
• M20: 33,062,177 km (0.117 R)
• M21: 33,188,886 km (0.085 R)
• M22: 33,955,725 km (0.057 R)
• M23: 34,343,632 km (0.113 R)
• M24: 42,733,829 km (0.09 R)
• M25: 56,629,227 km (0.076 R)
• M26: 57,723,236 km (0.12 R)
• M27: 67,393,691 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 542.5

Radius: 4.8

Gravity: 23.55 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 16.2 AU - 16.2 AU

Year: 27685 Days

Day: 20.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 87,438,182 km

• M1: 59,839 km (0.025 R)
• M2: 320,588 km (0.113 R)
• M3: 834,756 km (0.083 R)
• M4: 1,028,635 km (0.085 R)
• M5: 1,208,152 km (0.035 R)
• M6: 2,082,402 km (0.057 R)
• M7: 2,490,356 km (0.114 R)
• M8: 2,764,868 km (0.113 R)
• M9: 3,463,789 km (0.066 R)
• M10: 4,002,042 km (0.08 R)
• M11: 4,204,747 km (0.082 R)
• M12: 4,816,603 km (0.109 R)
• M13: 6,862,503 km (0.088 R)
• M14: 7,301,722 km (0.083 R)
• M15: 7,811,552 km (0.045 R)
• M16: 10,529,596 km (0.093 R)
• M17: 11,718,899 km (0.102 R)
• M18: 12,416,773 km (0.105 R)
• M19: 16,757,953 km (0.11 R)
• M20: 17,108,312 km (0.048 R)
• M21: 17,733,032 km (0.032 R)
• M22: 20,783,782 km (0.111 R)
• M23: 20,985,290 km (0.105 R)
• M24: 22,432,799 km (0.088 R)
• M25: 23,289,097 km (0.083 R)
• M26: 25,066,619 km (0.096 R)
• M27: 25,755,966 km (0.106 R)
• M28: 26,457,730 km (0.046 R)
• M29: 28,639,764 km (0.076 R)
• M30: 29,014,657 km (0.047 R)
• M31: 30,547,287 km (0.088 R)
• M32: 34,896,396 km (0.074 R)
• M33: 36,481,834 km (0.087 R)
• M34: 39,640,893 km (0.061 R)
• M35: 40,890,633 km (0.05 R)
• M36: 42,005,586 km (0.102 R)
• M37: 44,129,726 km (0.085 R)
• M38: 53,910,585 km (0.084 R)
• M39: 68,544,996 km (0.116 R)
• M40: 77,125,182 km (0.059 R)
• M41: 81,047,339 km (0.119 R)
• M42: 82,551,695 km (0.119 R)
• M43: 86,654,118 km (0.095 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 516 - 17,433 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit