🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.52 AU - 0.72 AU

Year: 320 Days

Day: 25.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 75.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.6 AU - 0.68 AU

Year: 336 Days

Day: 14 Hours

Environment

Temp: -127 °C

Axial Tilt: 20.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 94,604,912 km

• M1: 122,969 km (0.119 R)
• M2: 221,106 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129

Radius: 12.7

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.87 AU - 0.99 AU

Year: 588 Days

Day: 8.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 94,604,912 km

• M1: 157,975 km (0.115 R)
• M2: 639,980 km (0.111 R)
• M3: 1,210,995 km (0.09 R)
• M4: 1,637,797 km (0.105 R)
• M5: 2,099,457 km (0.082 R)
• M6: 2,745,570 km (0.102 R)
• M7: 3,342,914 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.5

Radius: 14

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.89 AU - 1.19 AU

Year: 696 Days

Day: 6.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 94,604,912 km

• M1: 180,116 km (0.055 R)
• M2: 666,159 km (0.118 R)
• M3: 1,161,927 km (0.095 R)
• M4: 1,734,587 km (0.039 R)
• M5: 2,307,996 km (0.097 R)
• M6: 2,793,890 km (0.105 R)
• M7: 3,440,901 km (0.043 R)
• M8: 4,095,391 km (0.109 R)
• M9: 4,747,638 km (0.077 R)
• M10: 5,214,533 km (0.08 R)
• M11: 5,807,689 km (0.092 R)
• M12: 6,424,929 km (0.071 R)
• M13: 7,674,670 km (0.043 R)
• M14: 8,222,647 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 975.5

Radius: 13.2

Gravity: 5.6 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.98 AU - 1.16 AU

Year: 726 Days

Day: 6.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 94,604,912 km

• M1: 164,258 km (0.054 R)
• M2: 583,731 km (0.04 R)
• M3: 1,097,300 km (0.092 R)
• M4: 1,681,779 km (0.07 R)
• M5: 2,196,097 km (0.095 R)
• M6: 3,050,899 km (0.083 R)
• M7: 3,563,272 km (0.107 R)
• M8: 4,591,009 km (0.085 R)
• M9: 5,156,190 km (0.053 R)
• M10: 6,341,903 km (0.07 R)
• M11: 7,750,366 km (0.054 R)
• M12: 8,196,019 km (0.114 R)
• M13: 8,658,725 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 42.9

Radius: 11.9

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.89 AU - 2.95 AU

Year: 3273 Days

Day: 8.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 94,604,912 km

• M1: 148,102 km (0.115 R)
• M2: 1,660,088 km (0.068 R)
• M3: 2,206,419 km (0.106 R)
• M4: 3,211,417 km (0.088 R)
• M5: 3,825,218 km (0.076 R)
• M6: 4,335,795 km (0.11 R)
• M7: 5,288,135 km (0.04 R)
• M8: 6,587,841 km (0.074 R)
• M9: 8,517,953 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.6

Radius: 11.6

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 5.66 AU - 5.78 AU

Year: 8974 Days

Day: 10.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 94,604,912 km

• M1: 144,811 km (0.055 R)
• M2: 592,856 km (0.054 R)
• M3: 1,099,096 km (0.078 R)
• M4: 1,496,278 km (0.099 R)
• M5: 2,221,229 km (0.073 R)
• M6: 3,292,500 km (0.085 R)
• M7: 3,802,628 km (0.109 R)
• M8: 4,416,728 km (0.098 R)
• M9: 4,982,656 km (0.038 R)
• M10: 5,749,944 km (0.052 R)
• M11: 8,328,263 km (0.099 R)
• M12: 9,495,874 km (0.112 R)
• M13: 9,983,264 km (0.08 R)
• M14: 12,517,602 km (0.113 R)
• M15: 15,393,023 km (0.026 R)
• M16: 20,164,147 km (0.053 R)
• M17: 20,896,429 km (0.065 R)
• M18: 22,414,399 km (0.081 R)
• M19: 24,167,536 km (0.089 R)
• M20: 25,161,464 km (0.108 R)
• M21: 31,315,322 km (0.077 R)
• M22: 32,997,251 km (0.058 R)
• M23: 33,401,614 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 948.2

Radius: 5

Gravity: 37.93 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 9.39 AU - 10.83 AU

Year: 21088 Days

Day: 23.2 Hours

Environment

Temp: -234 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 94,604,912 km

• M1: 69,114 km (0.096 R)
• M2: 617,989 km (0.08 R)
• M3: 946,805 km (0.108 R)
• M4: 1,172,548 km (0.053 R)
• M5: 1,622,987 km (0.108 R)
• M6: 2,030,791 km (0.116 R)
• M7: 3,159,956 km (0.088 R)
• M8: 3,421,902 km (0.09 R)
• M9: 3,989,626 km (0.106 R)
• M10: 4,261,146 km (0.115 R)
• M11: 4,581,285 km (0.098 R)
• M12: 5,350,069 km (0.117 R)
• M13: 5,680,381 km (0.098 R)
• M14: 6,944,782 km (0.036 R)
• M15: 7,642,506 km (0.057 R)
• M16: 7,902,657 km (0.086 R)
• M17: 10,201,378 km (0.105 R)
• M18: 16,319,333 km (0.03 R)
• M19: 17,817,705 km (0.065 R)
• M20: 24,170,079 km (0.066 R)
• M21: 30,043,591 km (0.08 R)
• M22: 36,360,660 km (0.119 R)
• M23: 38,143,119 km (0.099 R)
• M24: 38,445,755 km (0.065 R)
• M25: 39,982,873 km (0.095 R)
• M26: 46,369,954 km (0.034 R)
• M27: 49,534,249 km (0.117 R)
• M28: 58,468,832 km (0.083 R)
• M29: 62,575,742 km (0.091 R)
• M30: 71,817,599 km (0.09 R)
• M31: 77,971,607 km (0.11 R)
• M32: 79,933,583 km (0.056 R)
• M33: 83,191,525 km (0.093 R)
• M34: 84,981,913 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 347.4

Radius: 4.5

Gravity: 17.16 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 8.3 AU - 12.71 AU

Year: 22320 Days

Day: 18.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 94,604,912 km

• M1: 56,847 km (0.104 R)
• M2: 209,437 km (0.1 R)
• M3: 417,677 km (0.098 R)
• M4: 634,594 km (0.064 R)
• M5: 1,427,313 km (0.111 R)
• M6: 1,679,984 km (0.117 R)
• M7: 1,961,826 km (0.045 R)
• M8: 3,048,805 km (0.096 R)
• M9: 3,749,371 km (0.078 R)
• M10: 4,389,052 km (0.097 R)
• M11: 4,684,358 km (0.053 R)
• M12: 5,536,916 km (0.119 R)
• M13: 5,765,352 km (0.087 R)
• M14: 6,530,097 km (0.072 R)
• M15: 6,742,077 km (0.084 R)
• M16: 7,314,887 km (0.025 R)
• M17: 7,777,145 km (0.065 R)
• M18: 8,657,827 km (0.082 R)
• M19: 8,913,789 km (0.048 R)
• M20: 11,086,848 km (0.085 R)
• M21: 11,634,226 km (0.119 R)
• M22: 12,981,355 km (0.072 R)
• M23: 13,181,816 km (0.084 R)
• M24: 15,081,111 km (0.116 R)
• M25: 17,804,391 km (0.114 R)
• M26: 24,099,319 km (0.104 R)
• M27: 24,300,977 km (0.052 R)
• M28: 25,535,309 km (0.09 R)
• M29: 26,918,940 km (0.103 R)
• M30: 30,067,526 km (0.052 R)
• M31: 30,891,362 km (0.119 R)
• M32: 38,304,385 km (0.12 R)
• M33: 44,204,824 km (0.118 R)
• M34: 47,133,502 km (0.08 R)
• M35: 47,925,174 km (0.104 R)
• M36: 48,404,336 km (0.057 R)
• M37: 52,692,260 km (0.07 R)
• M38: 58,490,224 km (0.074 R)
• M39: 60,513,535 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 974.2

Radius: 6.1

Gravity: 26.18 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 9.39 AU - 12.19 AU

Year: 23251 Days

Day: 16.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 94,604,912 km

• M1: 75,996 km (0.112 R)
• M2: 274,063 km (0.057 R)
• M3: 500,554 km (0.04 R)
• M4: 693,985 km (0.036 R)
• M5: 1,241,064 km (0.119 R)
• M6: 2,128,778 km (0.077 R)
• M7: 4,864,025 km (0.078 R)
• M8: 5,428,458 km (0.097 R)
• M9: 5,857,505 km (0.119 R)
• M10: 6,171,211 km (0.037 R)
• M11: 9,580,248 km (0.073 R)
• M12: 11,197,101 km (0.116 R)
• M13: 13,598,746 km (0.104 R)
• M14: 17,125,366 km (0.103 R)
• M15: 21,008,927 km (0.075 R)
• M16: 24,165,591 km (0.09 R)
• M17: 24,972,373 km (0.095 R)
• M18: 26,276,268 km (0.107 R)
• M19: 29,277,350 km (0.1 R)
• M20: 33,908,901 km (0.095 R)
• M21: 39,005,850 km (0.059 R)
• M22: 40,435,706 km (0.067 R)
• M23: 44,762,525 km (0.119 R)
• M24: 47,393,952 km (0.107 R)
• M25: 47,932,355 km (0.112 R)
• M26: 53,542,424 km (0.11 R)
• M27: 58,128,497 km (0.048 R)
• M28: 59,366,569 km (0.119 R)
• M29: 60,201,624 km (0.102 R)
• M30: 68,987,507 km (0.096 R)
• M31: 72,966,810 km (0.103 R)
• M32: 89,591,622 km (0.089 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 388 - 16,888 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit