🌌 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: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.55 AU - 0.63 AU

Year: 297 Days

Day: 37.6 Hours

Environment

Temp: -127 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 656.4

Radius: 13.1

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.86 AU - 1.08 AU

Year: 627 Days

Day: 5.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,967,303 km

• M1: 162,912 km (0.088 R)
• M2: 676,631 km (0.098 R)
• M3: 1,096,552 km (0.104 R)
• M4: 1,785,899 km (0.082 R)
• M5: 2,221,678 km (0.102 R)
• M6: 2,965,179 km (0.106 R)
• M7: 3,544,572 km (0.117 R)
• M8: 4,485,543 km (0.069 R)
• M9: 5,768,195 km (0.096 R)
• M10: 7,303,817 km (0.043 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108

Radius: 14.3

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.11 AU - 3.47 AU

Year: 3057 Days

Day: 8.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,967,303 km

• M1: 184,753 km (0.071 R)
• M2: 713,283 km (0.117 R)
• M3: 1,740,272 km (0.118 R)
• M4: 2,309,941 km (0.095 R)
• M5: 3,003,476 km (0.084 R)
• M6: 3,475,009 km (0.093 R)
• M7: 3,979,902 km (0.111 R)
• M8: 4,497,660 km (0.117 R)
• M9: 5,060,447 km (0.108 R)
• M10: 6,215,343 km (0.055 R)
• M11: 6,747,762 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.3

Radius: 12.4

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.77 AU - 3.79 AU

Year: 3897 Days

Day: 12.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 64,967,303 km

• M1: 154,235 km (0.068 R)
• M2: 553,811 km (0.118 R)
• M3: 1,018,014 km (0.058 R)
• M4: 1,567,038 km (0.099 R)
• M5: 2,427,525 km (0.106 R)
• M6: 3,221,740 km (0.11 R)
• M7: 3,660,211 km (0.074 R)
• M8: 6,195,446 km (0.093 R)
• M9: 7,254,001 km (0.1 R)
• M10: 7,643,554 km (0.109 R)
• M11: 8,047,019 km (0.083 R)
• M12: 8,787,678 km (0.065 R)
• M13: 10,122,540 km (0.106 R)
• M14: 11,544,617 km (0.093 R)
• M15: 12,212,721 km (0.037 R)
• M16: 17,633,999 km (0.053 R)
• M17: 18,400,688 km (0.073 R)
• M18: 21,624,971 km (0.042 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.9

Radius: 11.2

Gravity: 7.9 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 4.25 AU - 4.79 AU

Year: 6304 Days

Day: 10.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 64,967,303 km

• M1: 139,276 km (0.095 R)
• M2: 517,758 km (0.102 R)
• M3: 947,403 km (0.036 R)
• M4: 1,368,821 km (0.037 R)
• M5: 2,836,675 km (0.094 R)
• M6: 3,568,807 km (0.098 R)
• M7: 5,821,003 km (0.114 R)
• M8: 6,892,273 km (0.055 R)
• M9: 8,049,861 km (0.097 R)
• M10: 10,070,330 km (0.068 R)
• M11: 10,747,111 km (0.093 R)
• M12: 11,249,012 km (0.112 R)
• M13: 14,778,923 km (0.095 R)
• M14: 16,103,164 km (0.026 R)
• M15: 18,986,812 km (0.115 R)
• M16: 19,425,134 km (0.091 R)
• M17: 20,474,114 km (0.115 R)
• M18: 21,324,578 km (0.055 R)
• M19: 24,963,097 km (0.077 R)
• M20: 25,844,379 km (0.066 R)
• M21: 26,382,931 km (0.09 R)
• M22: 26,929,113 km (0.115 R)
• M23: 28,708,280 km (0.049 R)
• M24: 30,068,424 km (0.033 R)
• M25: 30,564,491 km (0.047 R)
• M26: 33,443,950 km (0.089 R)
• M27: 34,840,446 km (0.063 R)
• M28: 39,499,373 km (0.094 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 808.1

Radius: 4

Gravity: 50.51 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 5.86 AU - 5.98 AU

Year: 9449 Days

Day: 16.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 64,967,303 km

• M1: 49,816 km (0.085 R)
• M2: 177,722 km (0.077 R)
• M3: 343,477 km (0.12 R)
• M4: 642,523 km (0.064 R)
• M5: 810,970 km (0.102 R)
• M6: 977,024 km (0.047 R)
• M7: 1,225,805 km (0.083 R)
• M8: 1,501,215 km (0.116 R)
• M9: 2,681,093 km (0.103 R)
• M10: 4,087,762 km (0.074 R)
• M11: 4,256,807 km (0.103 R)
• M12: 5,271,231 km (0.081 R)
• M13: 5,573,717 km (0.09 R)
• M14: 7,262,079 km (0.073 R)
• M15: 8,333,798 km (0.058 R)
• M16: 8,790,520 km (0.08 R)
• M17: 11,382,453 km (0.077 R)
• M18: 12,642,666 km (0.097 R)
• M19: 13,429,550 km (0.029 R)
• M20: 17,560,995 km (0.109 R)
• M21: 17,783,596 km (0.099 R)
• M22: 18,310,331 km (0.096 R)
• M23: 18,462,771 km (0.102 R)
• M24: 21,521,299 km (0.107 R)
• M25: 24,622,164 km (0.079 R)
• M26: 25,465,148 km (0.091 R)
• M27: 26,912,507 km (0.088 R)
• M28: 28,008,162 km (0.055 R)
• M29: 33,364,514 km (0.102 R)
• M30: 35,685,375 km (0.089 R)
• M31: 36,885,150 km (0.096 R)
• M32: 37,372,390 km (0.084 R)
• M33: 37,617,731 km (0.065 R)
• M34: 38,484,651 km (0.084 R)
• M35: 42,085,621 km (0.118 R)
• M36: 47,179,877 km (0.076 R)
• M37: 47,610,121 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 534.7

Radius: 5.5

Gravity: 17.68 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 7.76 AU - 10.34 AU

Year: 17860 Days

Day: 16.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 64,967,303 km

• M1: 70,461 km (0.085 R)
• M2: 349,461 km (0.065 R)
• M3: 660,923 km (0.069 R)
• M4: 1,157,289 km (0.1 R)
• M5: 1,331,720 km (0.069 R)
• M6: 1,602,642 km (0.092 R)
• M7: 1,820,606 km (0.104 R)
• M8: 2,039,468 km (0.085 R)
• M9: 3,918,118 km (0.063 R)
• M10: 6,222,075 km (0.054 R)
• M11: 7,023,770 km (0.03 R)
• M12: 9,840,099 km (0.089 R)
• M13: 11,649,785 km (0.079 R)
• M14: 12,087,209 km (0.099 R)
• M15: 13,329,619 km (0.074 R)
• M16: 14,368,726 km (0.109 R)
• M17: 14,654,757 km (0.106 R)
• M18: 16,451,278 km (0.118 R)
• M19: 18,056,313 km (0.11 R)
• M20: 21,019,698 km (0.067 R)
• M21: 21,481,057 km (0.096 R)
• M22: 22,328,679 km (0.099 R)
• M23: 24,191,023 km (0.037 R)
• M24: 28,110,038 km (0.098 R)
• M25: 28,557,486 km (0.061 R)
• M26: 29,812,462 km (0.067 R)
• M27: 32,432,070 km (0.09 R)
• M28: 33,421,361 km (0.092 R)
• M29: 35,851,579 km (0.069 R)
• M30: 43,248,146 km (0.109 R)
• M31: 43,844,443 km (0.108 R)
• M32: 45,053,344 km (0.048 R)
• M33: 50,439,764 km (0.088 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 455 - 17,243 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit