🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.12

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.79 AU - 0.81 AU

Year: 254 Days

Day: 25.3 Hours

Environment

Temp: 134 °C

Axial Tilt: 3.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 29,598,099 km

• M1: 36,203 km (0.093 R)
• M2: 296,952 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.75 AU - 1.11 AU

Year: 318 Days

Day: 22.8 Hours

Environment

Temp: 92 °C

Axial Tilt: 14.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.05 AU - 1.41 AU

Year: 484 Days

Day: 15.4 Hours

Environment

Temp: 18 °C

Axial Tilt: 43.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 29,598,099 km

• M1: 269,426 km (0.046 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.25

Radius: 0.57

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 1.73 AU - 2.15 AU

Year: 959 Days

Day: 29.9 Hours

Environment

Temp: -60 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 29,598,099 km

• M1: 481,705 km (0.095 R)
• M2: 558,299 km (0.059 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.03 AU - 2.49 AU

Year: 1205 Days

Day: 45.8 Hours

Environment

Temp: -77 °C

Axial Tilt: 20.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 2.8 AU - 3.18 AU

Year: 1834 Days

Day: 37.3 Hours

Environment

Temp: -93 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 2.62 AU - 3.62 AU

Year: 1955 Days

Day: 34 Hours

Environment

Temp: -105 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.49 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 7.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 263.9

Radius: 12

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 7.78 AU - 7.94 AU

Year: 7818 Days

Day: 10.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 29,598,099 km

• M1: 151,842 km (0.107 R)
• M2: 238,908 km (0.117 R)
• M3: 549,922 km (0.111 R)
• M4: 778,507 km (0.1 R)
• M5: 879,037 km (0.103 R)
• M6: 1,180,028 km (0.118 R)
• M7: 1,358,199 km (0.078 R)
• M8: 1,626,278 km (0.086 R)
• M9: 2,016,280 km (0.115 R)
• M10: 2,105,141 km (0.114 R)
• M11: 2,454,602 km (0.106 R)
• M12: 2,607,491 km (0.052 R)
• M13: 2,842,659 km (0.11 R)
• M14: 3,023,822 km (0.104 R)
• M15: 3,250,463 km (0.114 R)
• M16: 3,525,573 km (0.101 R)
• M17: 3,764,331 km (0.075 R)
• M18: 4,212,078 km (0.101 R)
• M19: 4,535,807 km (0.087 R)
• M20: 4,867,765 km (0.053 R)
• M21: 5,134,049 km (0.098 R)
• M22: 5,555,167 km (0.062 R)
• M23: 5,884,881 km (0.103 R)
• M24: 6,194,848 km (0.066 R)
• M25: 6,536,679 km (0.088 R)
• M26: 6,723,377 km (0.08 R)
• M27: 6,966,025 km (0.11 R)
• M28: 7,294,093 km (0.089 R)
• M29: 7,543,473 km (0.046 R)
• M30: 8,250,921 km (0.093 R)
• M31: 8,920,671 km (0.109 R)
• M32: 9,157,783 km (0.09 R)
• M33: 9,277,013 km (0.083 R)
• M34: 9,487,048 km (0.087 R)
• M35: 10,003,909 km (0.103 R)
• M36: 10,717,491 km (0.101 R)
• M37: 11,415,664 km (0.061 R)
• M38: 11,867,599 km (0.084 R)
• M39: 11,965,137 km (0.103 R)
• M40: 12,095,736 km (0.107 R)
• M41: 12,755,612 km (0.051 R)
• M42: 12,855,693 km (0.082 R)
• M43: 12,955,924 km (0.077 R)
• M44: 13,157,282 km (0.106 R)
• M45: 13,938,632 km (0.102 R)
• M46: 14,421,684 km (0.111 R)
• M47: 14,700,085 km (0.071 R)
• M48: 14,875,115 km (0.034 R)
• M49: 15,262,424 km (0.116 R)
• M50: 17,841,640 km (0.088 R)
• M51: 17,916,290 km (0.086 R)
• M52: 18,028,339 km (0.099 R)
• M53: 18,140,687 km (0.071 R)
• M54: 19,699,197 km (0.085 R)
• M55: 20,008,266 km (0.114 R)
• M56: 20,163,399 km (0.091 R)
• M57: 20,631,192 km (0.107 R)
• M58: 21,418,974 km (0.08 R)
• M59: 21,976,226 km (0.116 R)
• M60: 22,538,266 km (0.119 R)
• M61: 23,105,092 km (0.092 R)
• M62: 23,186,473 km (0.078 R)
• M63: 23,267,854 km (0.083 R)
• M64: 23,431,066 km (0.101 R)
• M65: 24,418,262 km (0.068 R)
• M66: 24,625,605 km (0.11 R)
• M67: 25,671,144 km (0.109 R)
• M68: 25,882,077 km (0.115 R)
• M69: 26,348,075 km (0.077 R)
• M70: 26,475,532 km (0.108 R)
• M71: 26,773,980 km (0.085 R)
• M72: 27,331,232 km (0.045 R)
• M73: 28,195,907 km (0.079 R)
• M74: 28,588,003 km (0.046 R)
• M75: 28,762,734 km (0.078 R)
• M76: 29,245,486 km (0.067 R)
• M77: 29,333,450 km (0.032 R)

Kuiper Belt

Range: 30.9 - 46.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 18,286 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit