🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 43.1 Hours

Environment

Temp: -117 °C

Axial Tilt: 21.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.54 AU - 0.6 AU

Year: 282 Days

Day: 38.5 Hours

Environment

Temp: -115 °C

Axial Tilt: 35 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.57 AU - 0.69 AU

Year: 328 Days

Day: 38.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.66 AU - 0.66 AU

Year: 352 Days

Day: 36.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,630,901 km

• M1: 33,959 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.3

Radius: 11

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.94 AU - 1.32 AU

Year: 788 Days

Day: 12.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 45,630,901 km

• M1: 136,732 km (0.052 R)
• M2: 701,913 km (0.089 R)
• M3: 1,404,724 km (0.117 R)
• M4: 2,072,678 km (0.103 R)
• M5: 2,647,434 km (0.065 R)
• M6: 3,124,052 km (0.086 R)
• M7: 3,512,857 km (0.113 R)
• M8: 5,182,818 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 932.9

Radius: 14.4

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 2.22 AU - 3.16 AU

Year: 2894 Days

Day: 5 Hours

Environment

Temp: -209 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 45,630,901 km

• M1: 180,116 km (0.113 R)
• M2: 628,161 km (0.083 R)
• M3: 1,159,683 km (0.115 R)
• M4: 1,851,872 km (0.06 R)
• M5: 2,409,872 km (0.066 R)
• M6: 3,010,956 km (0.116 R)
• M7: 3,933,975 km (0.071 R)
• M8: 4,564,530 km (0.069 R)
• M9: 6,841,260 km (0.046 R)
• M10: 7,561,275 km (0.113 R)
• M11: 8,159,517 km (0.043 R)
• M12: 10,106,982 km (0.042 R)
• M13: 11,210,565 km (0.029 R)
• M14: 14,345,837 km (0.055 R)
• M15: 17,334,504 km (0.079 R)
• M16: 19,523,270 km (0.106 R)
• M17: 20,208,129 km (0.101 R)
• M18: 22,157,689 km (0.119 R)
• M19: 23,109,281 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.8

Radius: 13.1

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.91 AU - 4.07 AU

Year: 4277 Days

Day: 12.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 45,630,901 km

• M1: 164,857 km (0.099 R)
• M2: 631,602 km (0.07 R)
• M3: 1,082,490 km (0.085 R)
• M4: 1,658,891 km (0.106 R)
• M5: 2,266,557 km (0.098 R)
• M6: 2,768,757 km (0.075 R)
• M7: 3,208,426 km (0.118 R)
• M8: 5,051,621 km (0.043 R)
• M9: 5,800,358 km (0.117 R)
• M10: 6,432,858 km (0.073 R)
• M11: 7,624,255 km (0.055 R)
• M12: 8,052,554 km (0.083 R)
• M13: 9,354,355 km (0.103 R)
• M14: 12,470,030 km (0.117 R)
• M15: 12,915,383 km (0.113 R)
• M16: 15,248,062 km (0.114 R)
• M17: 17,539,453 km (0.034 R)
• M18: 23,688,075 km (0.117 R)
• M19: 26,424,070 km (0.099 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.8

Radius: 14

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 4.18 AU - 4.92 AU

Year: 6367 Days

Day: 12.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,630,901 km

• M1: 174,431 km (0.105 R)
• M2: 912,098 km (0.079 R)
• M3: 1,656,796 km (0.111 R)
• M4: 2,496,639 km (0.074 R)
• M5: 3,155,917 km (0.051 R)
• M6: 4,744,197 km (0.086 R)
• M7: 6,045,998 km (0.117 R)
• M8: 7,462,241 km (0.12 R)
• M9: 8,837,644 km (0.095 R)
• M10: 10,283,657 km (0.113 R)
• M11: 11,630,038 km (0.11 R)
• M12: 12,398,073 km (0.103 R)
• M13: 13,309,124 km (0.12 R)
• M14: 13,753,131 km (0.084 R)
• M15: 15,690,124 km (0.073 R)
• M16: 19,739,888 km (0.068 R)
• M17: 20,464,540 km (0.115 R)
• M18: 21,584,579 km (0.094 R)
• M19: 25,957,325 km (0.093 R)
• M20: 27,180,587 km (0.097 R)
• M21: 28,625,553 km (0.057 R)
• M22: 32,761,934 km (0.076 R)
• M23: 33,267,425 km (0.119 R)
• M24: 34,501,907 km (0.059 R)
• M25: 35,341,599 km (0.099 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.8

Radius: 11.4

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 5.25 AU - 5.49 AU

Year: 8163 Days

Day: 9 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,630,901 km

• M1: 143,165 km (0.103 R)
• M2: 950,545 km (0.096 R)
• M3: 1,646,325 km (0.11 R)
• M4: 2,559,919 km (0.116 R)
• M5: 3,163,696 km (0.044 R)
• M6: 3,633,732 km (0.118 R)
• M7: 4,483,448 km (0.096 R)
• M8: 5,016,914 km (0.099 R)
• M9: 5,592,417 km (0.097 R)
• M10: 6,283,111 km (0.062 R)
• M11: 6,761,824 km (0.114 R)
• M12: 7,751,414 km (0.069 R)
• M13: 14,382,040 km (0.09 R)
• M14: 15,811,448 km (0.084 R)
• M15: 20,268,417 km (0.052 R)
• M16: 22,230,692 km (0.097 R)
• M17: 27,685,180 km (0.084 R)
• M18: 30,199,921 km (0.117 R)
• M19: 31,035,724 km (0.108 R)
• M20: 31,779,824 km (0.073 R)
• M21: 33,082,821 km (0.062 R)
• M22: 33,524,883 km (0.11 R)
• M23: 34,875,153 km (0.088 R)
• M24: 38,897,242 km (0.065 R)
• M25: 42,563,736 km (0.086 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 324 - 16,396 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit