🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.56 AU - 0.58 AU

Year: 278 Days

Day: 28.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 36 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.8

Radius: 13.9

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.74 AU - 1 AU

Year: 524 Days

Day: 10.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 76,529,917 km

• M1: 172,935 km (0.115 R)
• M2: 643,121 km (0.075 R)
• M3: 1,121,685 km (0.093 R)
• M4: 1,565,542 km (0.117 R)
• M5: 2,995,548 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 581.2

Radius: 11.2

Gravity: 4.63 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 2.31 AU - 2.75 AU

Year: 2598 Days

Day: 11.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 76,529,917 km

• M1: 140,173 km (0.074 R)
• M2: 504,294 km (0.066 R)
• M3: 1,260,960 km (0.063 R)
• M4: 2,404,187 km (0.113 R)
• M5: 3,535,446 km (0.036 R)
• M6: 3,963,296 km (0.103 R)
• M7: 4,322,182 km (0.088 R)
• M8: 4,746,591 km (0.083 R)
• M9: 6,898,706 km (0.106 R)
• M10: 9,112,156 km (0.075 R)
• M11: 10,398,997 km (0.095 R)
• M12: 14,372,466 km (0.093 R)
• M13: 16,979,807 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.4

Radius: 10.1

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.54 AU - 4.36 AU

Year: 5069 Days

Day: 11.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 76,529,917 km

• M1: 127,457 km (0.098 R)
• M2: 454,778 km (0.093 R)
• M3: 793,168 km (0.074 R)
• M4: 1,158,486 km (0.041 R)
• M5: 1,707,809 km (0.095 R)
• M6: 2,579,366 km (0.11 R)
• M7: 2,946,031 km (0.103 R)
• M8: 3,271,855 km (0.039 R)
• M9: 4,560,940 km (0.084 R)
• M10: 5,333,314 km (0.081 R)
• M11: 7,428,731 km (0.1 R)
• M12: 9,238,267 km (0.101 R)
• M13: 9,664,172 km (0.114 R)
• M14: 10,022,309 km (0.069 R)
• M15: 11,021,025 km (0.119 R)
• M16: 13,906,917 km (0.092 R)
• M17: 15,094,874 km (0.041 R)
• M18: 15,686,384 km (0.078 R)
• M19: 18,088,178 km (0.035 R)
• M20: 19,188,919 km (0.098 R)
• M21: 20,011,258 km (0.1 R)
• M22: 20,528,867 km (0.097 R)
• M23: 21,255,015 km (0.1 R)
• M24: 21,590,862 km (0.032 R)
• M25: 22,066,733 km (0.054 R)
• M26: 24,041,126 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.6

Radius: 10.1

Gravity: 8.5 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 5.04 AU - 5.52 AU

Year: 7834 Days

Day: 14.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 105.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 76,529,917 km

• M1: 128,654 km (0.037 R)
• M2: 451,337 km (0.102 R)
• M3: 961,765 km (0.105 R)
• M4: 1,434,344 km (0.049 R)
• M5: 2,368,882 km (0.041 R)
• M6: 2,937,055 km (0.116 R)
• M7: 3,426,838 km (0.099 R)
• M8: 4,457,418 km (0.12 R)
• M9: 4,774,266 km (0.082 R)
• M10: 7,236,647 km (0.114 R)
• M11: 7,757,846 km (0.12 R)
• M12: 9,147,611 km (0.072 R)
• M13: 11,057,527 km (0.102 R)
• M14: 11,641,258 km (0.101 R)
• M15: 12,245,184 km (0.114 R)
• M16: 12,927,949 km (0.096 R)
• M17: 13,278,606 km (0.103 R)
• M18: 14,872,572 km (0.111 R)
• M19: 15,322,562 km (0.096 R)
• M20: 16,182,600 km (0.091 R)
• M21: 16,796,699 km (0.067 R)
• M22: 17,144,365 km (0.053 R)
• M23: 17,998,718 km (0.094 R)
• M24: 22,281,406 km (0.068 R)
• M25: 25,425,355 km (0.113 R)
• M26: 35,345,938 km (0.118 R)
• M27: 36,728,521 km (0.09 R)
• M28: 39,478,579 km (0.091 R)
• M29: 41,597,483 km (0.047 R)
• M30: 42,749,387 km (0.094 R)
• M31: 43,659,989 km (0.115 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 965.4

Radius: 5.2

Gravity: 35.7 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 7.03 AU - 9.51 AU

Year: 15356 Days

Day: 21.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 76,529,917 km

• M1: 64,776 km (0.05 R)
• M2: 273,615 km (0.112 R)
• M3: 611,107 km (0.073 R)
• M4: 867,967 km (0.119 R)
• M5: 1,040,304 km (0.097 R)
• M6: 1,550,881 km (0.107 R)
• M7: 2,072,379 km (0.111 R)
• M8: 2,277,179 km (0.083 R)
• M9: 2,679,896 km (0.097 R)
• M10: 3,261,982 km (0.119 R)
• M11: 4,079,684 km (0.102 R)
• M12: 5,246,697 km (0.067 R)
• M13: 5,550,679 km (0.098 R)
• M14: 5,786,446 km (0.118 R)
• M15: 6,664,136 km (0.045 R)
• M16: 6,975,599 km (0.117 R)
• M17: 8,421,163 km (0.107 R)
• M18: 9,433,492 km (0.056 R)
• M19: 9,712,941 km (0.055 R)
• M20: 10,229,652 km (0.083 R)
• M21: 10,704,176 km (0.036 R)
• M22: 11,008,159 km (0.101 R)
• M23: 12,481,100 km (0.042 R)
• M24: 14,298,864 km (0.072 R)
• M25: 15,424,139 km (0.112 R)
• M26: 16,126,950 km (0.072 R)
• M27: 16,526,376 km (0.11 R)
• M28: 17,345,275 km (0.04 R)
• M29: 18,974,994 km (0.105 R)
• M30: 27,865,895 km (0.064 R)
• M31: 31,809,145 km (0.089 R)
• M32: 34,635,049 km (0.034 R)
• M33: 35,837,816 km (0.109 R)
• M34: 41,521,188 km (0.026 R)
• M35: 47,124,825 km (0.086 R)
• M36: 47,940,882 km (0.046 R)
• M37: 52,860,557 km (0.072 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 43.3

Radius: 6.4

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 6.3 AU - 10.3 AU

Year: 15439 Days

Day: 22.1 Hours

Environment

Temp: -236 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 76,529,917 km

• M1: 79,586 km (0.085 R)
• M2: 516,262 km (0.112 R)
• M3: 1,452,895 km (0.091 R)
• M4: 2,031,539 km (0.101 R)
• M5: 2,944,684 km (0.119 R)
• M6: 3,593,341 km (0.097 R)
• M7: 7,590,895 km (0.098 R)
• M8: 8,505,537 km (0.025 R)
• M9: 9,296,012 km (0.076 R)
• M10: 9,930,606 km (0.032 R)
• M11: 10,425,027 km (0.119 R)
• M12: 15,805,464 km (0.089 R)
• M13: 24,011,356 km (0.091 R)
• M14: 24,602,267 km (0.068 R)
• M15: 24,826,365 km (0.066 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 753.5

Radius: 3.3

Gravity: 69.19 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 7.39 AU - 11.83 AU

Year: 19235 Days

Day: 22.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 76,529,917 km

• M1: 41,139 km (0.102 R)
• M2: 194,028 km (0.103 R)
• M3: 403,765 km (0.092 R)
• M4: 983,905 km (0.107 R)
• M5: 1,179,729 km (0.095 R)
• M6: 2,409,124 km (0.098 R)
• M7: 4,074,597 km (0.103 R)
• M8: 4,790,872 km (0.048 R)
• M9: 6,601,156 km (0.071 R)
• M10: 8,135,431 km (0.097 R)
• M11: 10,187,316 km (0.087 R)
• M12: 11,557,931 km (0.063 R)
• M13: 12,219,603 km (0.107 R)
• M14: 13,473,682 km (0.11 R)
• M15: 13,983,811 km (0.087 R)
• M16: 16,234,361 km (0.084 R)
• M17: 20,949,985 km (0.061 R)
• M18: 24,091,540 km (0.067 R)
• M19: 24,518,493 km (0.1 R)
• M20: 28,353,135 km (0.104 R)
• M21: 31,161,984 km (0.05 R)
• M22: 35,921,740 km (0.101 R)
• M23: 40,389,929 km (0.115 R)
• M24: 42,834,807 km (0.053 R)
• M25: 58,252,812 km (0.047 R)
• M26: 65,001,322 km (0.072 R)
• M27: 66,871,146 km (0.042 R)
• M28: 73,362,197 km (0.088 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 549 - 19,637 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit