🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.56 AU - 0.62 AU

Year: 297 Days

Day: 13.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 9.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.04

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.48 AU - 0.76 AU

Year: 320 Days

Day: 13.3 Hours

Environment

Temp: -129 °C

Axial Tilt: 29.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.9

Radius: 8.1

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.82 AU - 1.06 AU

Year: 598 Days

Day: 5.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,169,030 km

• M1: 101,128 km (0.086 R)
• M2: 461,659 km (0.115 R)
• M3: 1,202,916 km (0.12 R)
• M4: 1,505,104 km (0.096 R)
• M5: 1,872,816 km (0.083 R)
• M6: 2,308,146 km (0.041 R)
• M7: 2,600,759 km (0.109 R)
• M8: 2,988,666 km (0.111 R)
• M9: 3,348,449 km (0.107 R)
• M10: 3,619,670 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 103.9

Radius: 14.2

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.89 AU - 1.39 AU

Year: 798 Days

Day: 15 Hours

Environment

Temp: -159 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 37,169,030 km

• M1: 176,675 km (0.054 R)
• M2: 635,492 km (0.074 R)
• M3: 1,162,375 km (0.108 R)
• M4: 2,513,095 km (0.06 R)
• M5: 3,683,997 km (0.112 R)
• M6: 4,290,317 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.1

Radius: 10.5

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.2 AU - 1.9 AU

Year: 1266 Days

Day: 7.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,169,030 km

• M1: 132,245 km (0.029 R)
• M2: 572,810 km (0.098 R)
• M3: 978,819 km (0.077 R)
• M4: 1,321,398 km (0.094 R)
• M5: 2,050,987 km (0.113 R)
• M6: 2,401,794 km (0.12 R)
• M7: 3,127,343 km (0.096 R)
• M8: 3,547,863 km (0.068 R)
• M9: 4,018,797 km (0.109 R)
• M10: 4,847,420 km (0.085 R)
• M11: 5,178,480 km (0.065 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.9

Radius: 13.4

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.58 AU - 2.22 AU

Year: 1718 Days

Day: 9.7 Hours

Environment

Temp: -178 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 37,169,030 km

• M1: 273,914 km (0.099 R)
• M2: 733,628 km (0.101 R)
• M3: 1,151,006 km (0.094 R)
• M4: 3,543,076 km (0.117 R)
• M5: 4,570,813 km (0.094 R)
• M6: 6,020,716 km (0.098 R)
• M7: 6,463,077 km (0.119 R)
• M8: 7,619,169 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.5

Radius: 12.4

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.63 AU - 2.67 AU

Year: 2068 Days

Day: 10 Hours

Environment

Temp: -182 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,169,030 km

• M1: 155,582 km (0.11 R)
• M2: 937,231 km (0.047 R)
• M3: 1,659,489 km (0.059 R)
• M4: 2,300,516 km (0.11 R)
• M5: 2,924,938 km (0.062 R)
• M6: 3,559,681 km (0.108 R)
• M7: 4,514,714 km (0.099 R)
• M8: 4,979,365 km (0.083 R)
• M9: 7,384,151 km (0.063 R)
• M10: 9,900,237 km (0.072 R)
• M11: 10,794,085 km (0.086 R)
• M12: 11,778,439 km (0.103 R)
• M13: 12,506,382 km (0.045 R)
• M14: 14,009,841 km (0.093 R)
• M15: 14,608,980 km (0.047 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 944.5

Radius: 12.6

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 2.11 AU - 3.19 AU

Year: 2830 Days

Day: 8 Hours

Environment

Temp: -206 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 37,169,030 km

• M1: 157,227 km (0.068 R)
• M2: 572,212 km (0.061 R)
• M3: 1,094,608 km (0.094 R)
• M4: 1,501,065 km (0.102 R)
• M5: 2,062,805 km (0.083 R)
• M6: 3,874,286 km (0.115 R)
• M7: 5,016,465 km (0.114 R)
• M8: 5,521,358 km (0.081 R)
• M9: 6,487,012 km (0.079 R)
• M10: 7,243,529 km (0.065 R)
• M11: 8,057,940 km (0.059 R)
• M12: 8,717,068 km (0.112 R)
• M13: 9,299,752 km (0.064 R)
• M14: 9,715,185 km (0.039 R)
• M15: 10,341,850 km (0.041 R)
• M16: 10,953,556 km (0.11 R)
• M17: 13,216,074 km (0.081 R)
• M18: 14,990,155 km (0.111 R)
• M19: 16,257,848 km (0.045 R)
• M20: 16,695,870 km (0.101 R)
• M21: 17,311,166 km (0.095 R)
• M22: 20,937,269 km (0.1 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 281.8

Radius: 3.6

Gravity: 21.74 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 5.29 AU - 7.53 AU

Year: 10646 Days

Day: 18.8 Hours

Environment

Temp: -224 °C

Axial Tilt: 161.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 37,169,030 km

• M1: 44,879 km (0.094 R)
• M2: 194,028 km (0.095 R)
• M3: 364,570 km (0.081 R)
• M4: 697,276 km (0.111 R)
• M5: 913,295 km (0.086 R)
• M6: 1,087,726 km (0.111 R)
• M7: 1,261,260 km (0.105 R)
• M8: 2,146,879 km (0.08 R)
• M9: 2,894,569 km (0.06 R)
• M10: 3,405,147 km (0.115 R)
• M11: 3,658,266 km (0.09 R)
• M12: 4,073,849 km (0.101 R)
• M13: 5,294,867 km (0.069 R)
• M14: 5,447,457 km (0.11 R)
• M15: 7,515,348 km (0.094 R)
• M16: 7,747,075 km (0.079 R)
• M17: 8,103,717 km (0.077 R)
• M18: 9,416,288 km (0.066 R)
• M19: 12,081,973 km (0.097 R)
• M20: 13,388,112 km (0.082 R)
• M21: 15,644,048 km (0.115 R)
• M22: 17,527,036 km (0.12 R)
• M23: 20,814,898 km (0.062 R)
• M24: 23,740,284 km (0.037 R)
• M25: 25,430,292 km (0.031 R)
• M26: 25,603,526 km (0.096 R)
• M27: 26,304,542 km (0.054 R)
• M28: 27,836,424 km (0.056 R)
• M29: 31,573,528 km (0.118 R)
• M30: 31,974,750 km (0.08 R)
• M31: 32,787,365 km (0.085 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: 381 - 19,526 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit