🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.46 AU - 0.6 AU

Year: 249 Days

Day: 14.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,794,973 km

• M1: 463,005 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.36

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.55 AU - 0.73 AU

Year: 331 Days

Day: 38.9 Hours

Environment

Temp: -137 °C

Axial Tilt: 49 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,794,973 km

• M1: 26,329 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 360.3

Radius: 10.5

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.73 AU - 0.97 AU

Year: 506 Days

Day: 7.6 Hours

Environment

Temp: -156 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,794,973 km

• M1: 130,599 km (0.071 R)
• M2: 481,256 km (0.106 R)
• M3: 899,233 km (0.095 R)
• M4: 1,343,239 km (0.072 R)
• M5: 1,718,281 km (0.102 R)
• M6: 2,081,654 km (0.04 R)
• M7: 2,925,386 km (0.104 R)
• M8: 4,176,922 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.1

Radius: 14

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.87 AU - 1.41 AU

Year: 786 Days

Day: 11.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 38,794,973 km

• M1: 174,132 km (0.039 R)
• M2: 1,015,620 km (0.077 R)
• M3: 1,670,559 km (0.118 R)
• M4: 2,240,378 km (0.097 R)
• M5: 2,694,706 km (0.118 R)
• M6: 3,223,385 km (0.069 R)
• M7: 3,932,629 km (0.072 R)
• M8: 5,810,680 km (0.043 R)
• M9: 7,073,735 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.5

Radius: 11.2

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.28 AU - 1.32 AU

Year: 957 Days

Day: 14.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 38,794,973 km

• M1: 140,772 km (0.091 R)
• M2: 608,115 km (0.101 R)
• M3: 1,014,722 km (0.105 R)
• M4: 1,372,411 km (0.097 R)
• M5: 2,429,918 km (0.066 R)
• M6: 3,177,758 km (0.102 R)
• M7: 5,182,968 km (0.098 R)
• M8: 7,725,982 km (0.071 R)
• M9: 8,569,116 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 332.8

Radius: 14.6

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.46 AU - 1.78 AU

Year: 1331 Days

Day: 6.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 38,794,973 km

• M1: 190,887 km (0.109 R)
• M2: 753,524 km (0.114 R)
• M3: 1,423,424 km (0.032 R)
• M4: 2,370,378 km (0.111 R)
• M5: 3,662,156 km (0.088 R)
• M6: 5,440,426 km (0.09 R)
• M7: 7,520,584 km (0.088 R)
• M8: 9,119,486 km (0.105 R)
• M9: 9,795,818 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.9

Radius: 11.5

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 2.39 AU - 3.37 AU

Year: 3156 Days

Day: 6 Hours

Environment

Temp: -204 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,794,973 km

• M1: 145,559 km (0.063 R)
• M2: 668,254 km (0.094 R)
• M3: 1,039,406 km (0.114 R)
• M4: 1,839,007 km (0.062 R)
• M5: 2,639,355 km (0.105 R)
• M6: 3,175,514 km (0.064 R)
• M7: 3,926,795 km (0.063 R)
• M8: 4,574,104 km (0.038 R)
• M9: 5,153,946 km (0.09 R)
• M10: 7,464,036 km (0.12 R)
• M11: 8,003,336 km (0.105 R)
• M12: 9,899,489 km (0.081 R)
• M13: 10,487,858 km (0.087 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.8

Radius: 8.4

Gravity: 11.09 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 4.54 AU - 5.08 AU

Year: 6811 Days

Day: 9.8 Hours

Environment

Temp: -217 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 38,794,973 km

• M1: 105,018 km (0.084 R)
• M2: 457,620 km (0.066 R)
• M3: 776,712 km (0.115 R)
• M4: 1,107,922 km (0.06 R)
• M5: 1,939,836 km (0.089 R)
• M6: 2,636,812 km (0.059 R)
• M7: 3,267,217 km (0.108 R)
• M8: 4,600,883 km (0.053 R)
• M9: 6,506,610 km (0.066 R)
• M10: 7,421,550 km (0.052 R)
• M11: 7,771,161 km (0.114 R)
• M12: 8,050,609 km (0.09 R)
• M13: 8,800,394 km (0.1 R)
• M14: 9,505,150 km (0.1 R)
• M15: 10,105,037 km (0.076 R)
• M16: 14,010,888 km (0.113 R)
• M17: 14,545,551 km (0.056 R)
• M18: 15,529,905 km (0.039 R)
• M19: 16,689,587 km (0.044 R)
• M20: 19,180,392 km (0.106 R)
• M21: 19,839,819 km (0.039 R)
• M22: 21,126,510 km (0.063 R)
• M23: 22,067,631 km (0.037 R)
• M24: 22,467,955 km (0.065 R)
• M25: 24,799,737 km (0.062 R)
• M26: 26,741,517 km (0.101 R)
• M27: 30,527,989 km (0.029 R)
• M28: 31,527,602 km (0.106 R)
• M29: 33,592,052 km (0.079 R)
• M30: 34,765,049 km (0.072 R)
• M31: 38,447,850 km (0.104 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 517 - 18,527 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit