🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.6 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.99 AU - 1.41 AU

Year: 483 Days

Day: 46.9 Hours

Environment

Temp: -11 °C

Axial Tilt: 6.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.32 AU - 1.74 AU

Year: 695 Days

Day: 38.7 Hours

Environment

Temp: -49 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.94 AU - 2 AU

Year: 1015 Days

Day: 41.2 Hours

Environment

Temp: -75 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 92,990,506 km

• M1: 726,298 km (0.031 R)
• M2: 1,091,167 km (0.07 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.73

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.51 AU - 3.71 AU

Year: 2518 Days

Day: 31.3 Hours

Environment

Temp: -109 °C

Axial Tilt: 23.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 92,990,506 km

• M1: 414,536 km (0.108 R)

Planet 5 - Terrestrial

Semi-Major Axis: 4.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 3.87 AU - 4.85 AU

Year: 3342 Days

Day: 37.9 Hours

Environment

Temp: -125 °C

Axial Tilt: 13.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.7

Radius: 15

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 7.15 AU - 7.57 AU

Year: 7330 Days

Day: 11.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 92,990,506 km

• M1: 186,549 km (0.082 R)
• M2: 1,477,279 km (0.101 R)
• M3: 2,090,929 km (0.109 R)
• M4: 2,927,331 km (0.103 R)
• M5: 3,526,471 km (0.094 R)
• M6: 5,107,122 km (0.108 R)
• M7: 10,468,859 km (0.06 R)
• M8: 11,598,772 km (0.091 R)
• M9: 28,247,818 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985.1

Radius: 13.9

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 8.47 AU - 12.19 AU

Year: 12188 Days

Day: 8.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 92,990,506 km

• M1: 173,833 km (0.084 R)
• M2: 711,039 km (0.116 R)
• M3: 1,785,600 km (0.079 R)
• M4: 2,405,235 km (0.048 R)
• M5: 4,053,803 km (0.1 R)
• M6: 5,067,329 km (0.071 R)
• M7: 5,782,406 km (0.103 R)
• M8: 8,243,142 km (0.116 R)
• M9: 8,878,634 km (0.119 R)
• M10: 14,632,317 km (0.083 R)
• M11: 15,274,242 km (0.106 R)
• M12: 15,712,713 km (0.116 R)
• M13: 16,768,425 km (0.109 R)
• M14: 17,951,445 km (0.095 R)
• M15: 18,937,445 km (0.103 R)
• M16: 19,872,731 km (0.116 R)
• M17: 20,483,688 km (0.105 R)
• M18: 21,835,305 km (0.114 R)
• M19: 22,958,785 km (0.079 R)
• M20: 27,732,752 km (0.053 R)
• M21: 29,498,456 km (0.1 R)
• M22: 34,613,806 km (0.069 R)
• M23: 36,529,257 km (0.052 R)
• M24: 37,579,135 km (0.117 R)
• M25: 38,245,444 km (0.104 R)
• M26: 38,919,681 km (0.087 R)
• M27: 42,123,918 km (0.059 R)
• M28: 45,953,175 km (0.077 R)
• M29: 53,286,462 km (0.1 R)
• M30: 56,879,354 km (0.101 R)
• M31: 59,003,495 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.7

Radius: 8

Gravity: 15.17 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 9.47 AU - 13.95 AU

Year: 14710 Days

Day: 9.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 105.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 92,990,506 km

• M1: 99,632 km (0.083 R)
• M2: 358,436 km (0.077 R)
• M3: 607,218 km (0.085 R)
• M4: 1,279,810 km (0.095 R)
• M5: 1,625,979 km (0.107 R)
• M6: 3,885,057 km (0.065 R)
• M7: 6,393,963 km (0.111 R)
• M8: 7,983,590 km (0.08 R)
• M9: 15,498,190 km (0.114 R)
• M10: 23,443,183 km (0.052 R)
• M11: 24,465,385 km (0.1 R)
• M12: 26,598,501 km (0.092 R)
• M13: 29,435,475 km (0.104 R)
• M14: 31,109,027 km (0.099 R)
• M15: 32,093,381 km (0.074 R)
• M16: 33,098,379 km (0.102 R)
• M17: 37,604,566 km (0.105 R)
• M18: 43,106,028 km (0.073 R)
• M19: 58,782,389 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 914.7

Radius: 3.2

Gravity: 89.33 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 14.99 AU - 16.91 AU

Year: 23384 Days

Day: 18.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 92,990,506 km

• M1: 48,320 km (0.09 R)
• M2: 248,781 km (0.082 R)
• M3: 739,612 km (0.109 R)
• M4: 950,694 km (0.068 R)
• M5: 1,308,682 km (0.093 R)
• M6: 1,931,009 km (0.1 R)
• M7: 2,036,775 km (0.098 R)
• M8: 2,169,020 km (0.082 R)
• M9: 4,059,338 km (0.078 R)
• M10: 4,449,190 km (0.05 R)
• M11: 4,709,939 km (0.033 R)
• M12: 4,824,831 km (0.102 R)
• M13: 5,140,183 km (0.099 R)
• M14: 6,446,023 km (0.083 R)
• M15: 6,877,313 km (0.077 R)
• M16: 7,175,163 km (0.098 R)
• M17: 7,850,298 km (0.092 R)
• M18: 8,066,168 km (0.07 R)
• M19: 9,938,684 km (0.112 R)
• M20: 10,644,038 km (0.106 R)
• M21: 11,450,819 km (0.058 R)
• M22: 13,722,014 km (0.053 R)
• M23: 15,930,079 km (0.077 R)
• M24: 16,893,788 km (0.087 R)
• M25: 17,073,007 km (0.055 R)
• M26: 20,623,263 km (0.028 R)
• M27: 23,503,920 km (0.114 R)
• M28: 24,866,008 km (0.114 R)
• M29: 30,047,032 km (0.029 R)
• M30: 32,058,674 km (0.119 R)
• M31: 34,158,430 km (0.11 R)
• M32: 35,314,971 km (0.099 R)
• M33: 47,097,150 km (0.074 R)
• M34: 52,995,943 km (0.072 R)
• M35: 53,380,111 km (0.112 R)
• M36: 59,368,065 km (0.106 R)
• M37: 63,383,122 km (0.048 R)
• M38: 73,367,583 km (0.101 R)
• M39: 73,844,800 km (0.079 R)
• M40: 79,985,344 km (0.058 R)
• M41: 82,276,585 km (0.113 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 378 - 12,705 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit