🌌 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: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.41 AU - 0.63 AU

Year: 246 Days

Day: 40.4 Hours

Environment

Temp: -121 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.1

Radius: 10.8

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.92 AU - 0.92 AU

Year: 579 Days

Day: 9 Hours

Environment

Temp: -151 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 86,035,975 km

• M1: 134,788 km (0.104 R)
• M2: 495,618 km (0.12 R)
• M3: 909,555 km (0.115 R)
• M4: 1,245,552 km (0.116 R)
• M5: 1,659,489 km (0.076 R)
• M6: 2,219,284 km (0.078 R)
• M7: 2,740,035 km (0.069 R)
• M8: 3,353,087 km (0.094 R)
• M9: 4,456,969 km (0.043 R)
• M10: 5,373,556 km (0.07 R)
• M11: 6,057,667 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.8

Radius: 8.1

Gravity: 10.7 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.58 AU - 2 AU

Year: 1571 Days

Day: 12.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 86,035,975 km

• M1: 100,829 km (0.112 R)
• M2: 372,648 km (0.111 R)
• M3: 694,583 km (0.108 R)
• M4: 1,157,888 km (0.06 R)
• M5: 1,416,542 km (0.081 R)
• M6: 2,133,565 km (0.098 R)
• M7: 2,811,991 km (0.119 R)
• M8: 3,133,028 km (0.084 R)
• M9: 3,593,490 km (0.09 R)
• M10: 3,883,860 km (0.079 R)
• M11: 4,208,487 km (0.093 R)
• M12: 4,590,411 km (0.054 R)
• M13: 5,669,759 km (0.079 R)
• M14: 6,354,319 km (0.099 R)
• M15: 7,944,245 km (0.058 R)
• M16: 8,291,462 km (0.12 R)
• M17: 10,182,229 km (0.051 R)
• M18: 10,661,691 km (0.114 R)
• M19: 11,665,642 km (0.113 R)
• M20: 13,449,896 km (0.1 R)
• M21: 13,736,525 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 41.2

Radius: 11.6

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.8 AU - 1.86 AU

Year: 1624 Days

Day: 11.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 86,035,975 km

• M1: 144,661 km (0.114 R)
• M2: 627,413 km (0.089 R)
• M3: 1,035,516 km (0.101 R)
• M4: 1,512,434 km (0.117 R)
• M5: 2,601,507 km (0.118 R)
• M6: 3,146,941 km (0.102 R)
• M7: 3,893,584 km (0.107 R)
• M8: 4,769,330 km (0.096 R)
• M9: 5,380,587 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 107.3

Radius: 10.2

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.54 AU - 2.24 AU

Year: 1705 Days

Day: 9.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 86,035,975 km

• M1: 127,457 km (0.037 R)
• M2: 453,431 km (0.085 R)
• M3: 1,157,588 km (0.092 R)
• M4: 2,936,307 km (0.114 R)
• M5: 3,294,295 km (0.086 R)
• M6: 4,143,861 km (0.11 R)
• M7: 5,637,297 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.9

Radius: 12.7

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.79 AU - 2.01 AU

Year: 1718 Days

Day: 7.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 86,035,975 km

• M1: 157,975 km (0.102 R)
• M2: 603,777 km (0.079 R)
• M3: 1,074,711 km (0.082 R)
• M4: 1,991,447 km (0.114 R)
• M5: 2,898,459 km (0.061 R)
• M6: 3,504,031 km (0.092 R)
• M7: 4,324,276 km (0.062 R)
• M8: 7,041,422 km (0.101 R)
• M9: 8,114,936 km (0.096 R)
• M10: 9,099,590 km (0.052 R)
• M11: 9,925,819 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198

Radius: 14.3

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.81 AU - 2.29 AU

Year: 1925 Days

Day: 10.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 86,035,975 km

• M1: 177,872 km (0.086 R)
• M2: 654,491 km (0.098 R)
• M3: 1,370,466 km (0.081 R)
• M4: 2,061,758 km (0.081 R)
• M5: 2,654,016 km (0.093 R)
• M6: 3,192,119 km (0.052 R)
• M7: 3,880,868 km (0.076 R)
• M8: 5,070,620 km (0.091 R)
• M9: 5,990,796 km (0.106 R)
• M10: 6,902,446 km (0.111 R)
• M11: 8,111,197 km (0.114 R)
• M12: 8,835,101 km (0.077 R)
• M13: 10,505,660 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.8

Radius: 14.5

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 2.43 AU - 2.53 AU

Year: 2562 Days

Day: 7.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 86,035,975 km

• M1: 180,565 km (0.103 R)
• M2: 703,110 km (0.08 R)
• M3: 1,195,437 km (0.106 R)
• M4: 2,053,231 km (0.117 R)
• M5: 2,505,016 km (0.116 R)
• M6: 3,054,938 km (0.087 R)
• M7: 3,511,511 km (0.068 R)
• M8: 4,605,819 km (0.073 R)
• M9: 5,076,604 km (0.115 R)
• M10: 5,843,442 km (0.053 R)
• M11: 6,475,045 km (0.092 R)
• M12: 7,464,335 km (0.12 R)
• M13: 8,552,211 km (0.119 R)
• M14: 9,571,571 km (0.083 R)
• M15: 11,042,417 km (0.111 R)
• M16: 12,618,281 km (0.034 R)
• M17: 14,249,796 km (0.076 R)
• M18: 15,303,413 km (0.082 R)
• M19: 16,655,629 km (0.086 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 984

Radius: 7.8

Gravity: 16.17 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 7.77 AU - 11.79 AU

Year: 20064 Days

Day: 19.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 79.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 86,035,975 km

• M1: 97,239 km (0.059 R)
• M2: 417,079 km (0.095 R)
• M3: 686,505 km (0.047 R)
• M4: 2,258,629 km (0.098 R)
• M5: 2,535,385 km (0.108 R)
• M6: 3,327,954 km (0.098 R)
• M7: 3,625,953 km (0.102 R)
• M8: 3,877,128 km (0.081 R)
• M9: 4,310,363 km (0.113 R)
• M10: 5,116,846 km (0.071 R)
• M11: 5,555,915 km (0.073 R)
• M12: 7,073,735 km (0.111 R)
• M13: 8,353,396 km (0.094 R)
• M14: 10,207,661 km (0.052 R)
• M15: 10,903,890 km (0.116 R)
• M16: 11,631,534 km (0.111 R)
• M17: 14,709,360 km (0.063 R)
• M18: 18,017,717 km (0.089 R)
• M19: 19,892,777 km (0.075 R)
• M20: 21,483,601 km (0.068 R)
• M21: 22,414,847 km (0.114 R)
• M22: 22,837,312 km (0.111 R)
• M23: 35,346,835 km (0.081 R)
• M24: 36,935,714 km (0.099 R)
• M25: 40,566,604 km (0.103 R)
• M26: 44,263,018 km (0.097 R)
• M27: 47,481,018 km (0.105 R)
• M28: 54,758,954 km (0.051 R)
• M29: 57,275,490 km (0.069 R)
• M30: 58,263,584 km (0.04 R)
• M31: 67,016,705 km (0.096 R)
• M32: 70,795,248 km (0.071 R)
• M33: 74,011,901 km (0.05 R)
• M34: 74,479,245 km (0.101 R)
• M35: 76,130,356 km (0.101 R)
• M36: 79,750,326 km (0.062 R)
• M37: 79,995,666 km (0.045 R)
• M38: 82,226,470 km (0.048 R)
• M39: 82,727,772 km (0.034 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 332 - 14,458 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit