🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.49 AU - 0.65 AU

Year: 282 Days

Day: 25.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.4

Radius: 10.2

Gravity: 8.67 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.6 AU - 0.92 AU

Year: 435 Days

Day: 13.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,830,923 km

• M1: 126,859 km (0.116 R)
• M2: 575,503 km (0.113 R)
• M3: 991,684 km (0.077 R)
• M4: 1,318,705 km (0.043 R)
• M5: 1,711,848 km (0.056 R)
• M6: 2,129,376 km (0.114 R)
• M7: 2,824,408 km (0.114 R)
• M8: 3,339,024 km (0.111 R)
• M9: 3,834,642 km (0.088 R)
• M10: 4,586,521 km (0.105 R)
• M11: 6,102,845 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.9

Radius: 10.8

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.86 AU - 0.88 AU

Year: 532 Days

Day: 12.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,830,923 km

• M1: 134,339 km (0.113 R)
• M2: 1,292,825 km (0.049 R)
• M3: 1,833,920 km (0.04 R)
• M4: 2,413,911 km (0.12 R)
• M5: 3,066,756 km (0.118 R)
• M6: 3,522,581 km (0.107 R)
• M7: 4,037,347 km (0.095 R)
• M8: 4,942,714 km (0.118 R)
• M9: 5,284,096 km (0.061 R)
• M10: 6,142,788 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.5

Radius: 14.2

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.94 AU - 1 AU

Year: 627 Days

Day: 7.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,830,923 km

• M1: 176,525 km (0.089 R)
• M2: 619,036 km (0.073 R)
• M3: 1,145,321 km (0.106 R)
• M4: 1,619,696 km (0.119 R)
• M5: 2,459,987 km (0.073 R)
• M6: 2,986,721 km (0.076 R)
• M7: 3,626,552 km (0.069 R)
• M8: 4,242,745 km (0.08 R)
• M9: 5,022,898 km (0.109 R)
• M10: 5,791,233 km (0.101 R)
• M11: 6,333,675 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.9

Radius: 12.7

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.18 AU - 4.12 AU

Year: 4575 Days

Day: 10.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 64,830,923 km

• M1: 157,975 km (0.098 R)
• M2: 719,416 km (0.097 R)
• M3: 1,874,162 km (0.115 R)
• M4: 2,613,774 km (0.101 R)
• M5: 3,540,084 km (0.067 R)
• M6: 4,577,246 km (0.066 R)
• M7: 5,750,841 km (0.06 R)
• M8: 6,332,927 km (0.116 R)
• M9: 9,064,883 km (0.113 R)
• M10: 10,819,816 km (0.1 R)
• M11: 12,124,907 km (0.114 R)
• M12: 12,888,455 km (0.109 R)
• M13: 14,830,834 km (0.088 R)
• M14: 16,554,201 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811

Radius: 14.1

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 4.08 AU - 4.34 AU

Year: 5667 Days

Day: 5.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 64,830,923 km

• M1: 175,329 km (0.101 R)
• M2: 635,193 km (0.113 R)
• M3: 2,116,361 km (0.093 R)
• M4: 3,240,439 km (0.089 R)
• M5: 4,468,040 km (0.083 R)
• M6: 5,706,710 km (0.116 R)
• M7: 6,881,502 km (0.055 R)
• M8: 7,675,268 km (0.079 R)
• M9: 10,473,646 km (0.095 R)
• M10: 15,642,701 km (0.11 R)
• M11: 18,604,141 km (0.104 R)
• M12: 20,872,793 km (0.087 R)
• M13: 21,542,841 km (0.093 R)
• M14: 22,769,245 km (0.11 R)
• M15: 25,110,451 km (0.112 R)
• M16: 25,953,735 km (0.117 R)
• M17: 29,238,904 km (0.115 R)
• M18: 32,891,934 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.5

Radius: 11.4

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 4.37 AU - 4.75 AU

Year: 6388 Days

Day: 10.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,830,923 km

• M1: 141,968 km (0.116 R)
• M2: 781,350 km (0.088 R)
• M3: 1,270,984 km (0.085 R)
• M4: 1,639,293 km (0.065 R)
• M5: 4,004,585 km (0.111 R)
• M6: 5,134,349 km (0.063 R)
• M7: 5,907,770 km (0.091 R)
• M8: 6,322,754 km (0.105 R)
• M9: 7,237,395 km (0.101 R)
• M10: 9,924,921 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 641.3

Radius: 3.6

Gravity: 49.48 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 6.55 AU - 10.45 AU

Year: 16257 Days

Day: 23.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 64,830,923 km

• M1: 44,879 km (0.09 R)
• M2: 226,342 km (0.069 R)
• M3: 363,074 km (0.116 R)
• M4: 482,154 km (0.036 R)
• M5: 802,593 km (0.116 R)
• M6: 940,372 km (0.026 R)
• M7: 1,057,059 km (0.071 R)
• M8: 1,183,469 km (0.069 R)
• M9: 2,943,189 km (0.119 R)
• M10: 3,273,501 km (0.119 R)
• M11: 3,770,764 km (0.107 R)
• M12: 4,316,796 km (0.119 R)
• M13: 4,542,689 km (0.094 R)
• M14: 5,414,396 km (0.114 R)
• M15: 5,677,239 km (0.117 R)
• M16: 7,344,807 km (0.091 R)
• M17: 8,842,581 km (0.069 R)
• M18: 8,997,414 km (0.073 R)
• M19: 12,297,095 km (0.092 R)
• M20: 14,677,795 km (0.069 R)
• M21: 21,793,567 km (0.108 R)
• M22: 23,330,536 km (0.101 R)
• M23: 26,618,248 km (0.12 R)
• M24: 30,789,187 km (0.094 R)
• M25: 31,145,229 km (0.119 R)
• M26: 34,347,372 km (0.064 R)
• M27: 35,765,709 km (0.102 R)
• M28: 38,994,929 km (0.107 R)
• M29: 39,551,433 km (0.111 R)
• M30: 41,396,274 km (0.105 R)
• M31: 45,716,960 km (0.117 R)
• M32: 48,384,439 km (0.089 R)
• M33: 50,164,654 km (0.101 R)
• M34: 51,653,302 km (0.113 R)
• M35: 52,492,846 km (0.066 R)
• M36: 52,831,236 km (0.091 R)
• M37: 53,855,084 km (0.088 R)
• M38: 57,542,671 km (0.096 R)
• M39: 60,277,320 km (0.117 R)
• M40: 63,479,912 km (0.062 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 160 - 18,595 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit