🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.88 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.48 AU - 2.02 AU

Year: 817 Days

Day: 19.6 Hours

Environment

Temp: -34 °C

Axial Tilt: 16.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.86 AU - 2.32 AU

Year: 1067 Days

Day: 14.1 Hours

Environment

Temp: -51 °C

Axial Tilt: 38.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 2.16 AU - 2.18 AU

Year: 1129 Days

Day: 36.6 Hours

Environment

Temp: -73 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,510,990 km

• M1: 971,937 km (0.077 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.06

Radius: 1.56

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.45 AU - 2.73 AU

Year: 1472 Days

Day: 34.4 Hours

Environment

Temp: -90 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 3.24 AU - 5.4 AU

Year: 3170 Days

Day: 33 Hours

Environment

Temp: -116 °C

Axial Tilt: 46.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,510,990 km

• M1: 160,967 km (0.077 R)

Planet 6 - Terrestrial

Semi-Major Axis: 4.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 4.48 AU - 4.9 AU

Year: 3586 Days

Day: 38.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 3.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,510,990 km

• M1: 774,468 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 682.1

Radius: 5.6

Gravity: 21.75 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 11.31 AU - 18.19 AU

Year: 20003 Days

Day: 19.1 Hours

Environment

Temp: -194 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 68,510,990 km

• M1: 77,492 km (0.105 R)
• M2: 277,953 km (0.077 R)
• M3: 2,465,223 km (0.054 R)
• M4: 2,847,745 km (0.053 R)
• M5: 3,027,263 km (0.058 R)
• M6: 3,884,010 km (0.083 R)
• M7: 4,301,537 km (0.032 R)
• M8: 6,147,874 km (0.06 R)
• M9: 6,361,949 km (0.118 R)
• M10: 9,502,606 km (0.105 R)
• M11: 10,682,934 km (0.104 R)
• M12: 10,930,219 km (0.039 R)
• M13: 27,819,669 km (0.11 R)
• M14: 29,360,976 km (0.077 R)
• M15: 29,846,421 km (0.068 R)
• M16: 32,742,486 km (0.112 R)
• M17: 33,395,929 km (0.113 R)
• M18: 34,999,469 km (0.042 R)
• M19: 47,687,164 km (0.101 R)
• M20: 68,080,196 km (0.073 R)
• M21: 74,854,586 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 264.9

Radius: 6.4

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 17.5 AU - 20.92 AU

Year: 29730 Days

Day: 19.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 68,510,990 km

• M1: 79,885 km (0.082 R)
• M2: 308,620 km (0.074 R)
• M3: 606,171 km (0.077 R)
• M4: 4,163,458 km (0.117 R)
• M5: 5,086,926 km (0.109 R)
• M6: 5,734,236 km (0.04 R)
• M7: 9,590,719 km (0.069 R)
• M8: 10,817,123 km (0.069 R)
• M9: 11,819,279 km (0.117 R)
• M10: 16,531,014 km (0.044 R)
• M11: 24,924,202 km (0.053 R)
• M12: 26,553,472 km (0.09 R)
• M13: 30,628,668 km (0.079 R)
• M14: 36,182,339 km (0.071 R)
• M15: 47,083,686 km (0.11 R)
• M16: 54,969,139 km (0.065 R)
• M17: 70,486,178 km (0.076 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 223.5

Radius: 6.8

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 15.99 AU - 22.59 AU

Year: 29916 Days

Day: 15.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 68,510,990 km

• M1: 205,847 km (0.079 R)
• M2: 517,758 km (0.106 R)
• M3: 927,956 km (0.08 R)
• M4: 2,064,451 km (0.088 R)
• M5: 2,543,613 km (0.097 R)
• M6: 2,797,779 km (0.074 R)
• M7: 3,809,659 km (0.058 R)
• M8: 5,873,811 km (0.075 R)
• M9: 6,278,473 km (0.065 R)
• M10: 6,876,117 km (0.099 R)
• M11: 7,651,931 km (0.06 R)
• M12: 10,214,094 km (0.115 R)
• M13: 14,137,896 km (0.117 R)
• M14: 16,790,267 km (0.071 R)
• M15: 17,194,330 km (0.083 R)
• M16: 18,190,802 km (0.081 R)
• M17: 19,489,910 km (0.091 R)
• M18: 20,207,381 km (0.111 R)
• M19: 25,201,257 km (0.106 R)
• M20: 28,721,594 km (0.118 R)
• M21: 30,359,841 km (0.093 R)
• M22: 30,959,728 km (0.08 R)
• M23: 33,693,480 km (0.067 R)
• M24: 35,779,921 km (0.096 R)
• M25: 37,263,334 km (0.077 R)
• M26: 48,976,398 km (0.094 R)
• M27: 51,140,481 km (0.107 R)
• M28: 54,065,418 km (0.088 R)
• M29: 66,277,691 km (0.077 R)

Kuiper Belt

Range: 31.1 - 59.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 382 - 17,605 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit