🌌 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: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.43 AU - 0.63 AU

Year: 249 Days

Day: 15.4 Hours

Environment

Temp: -130 °C

Axial Tilt: 35.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.2

Radius: 14.2

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.7 AU - 0.76 AU

Year: 403 Days

Day: 6.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 76,777,125 km

• M1: 176,525 km (0.095 R)
• M2: 697,126 km (0.025 R)
• M3: 1,213,837 km (0.076 R)
• M4: 2,154,359 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491.4

Radius: 10.5

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.76 AU - 0.82 AU

Year: 453 Days

Day: 14.8 Hours

Environment

Temp: -152 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,777,125 km

• M1: 143,165 km (0.09 R)
• M2: 530,773 km (0.072 R)
• M3: 973,733 km (0.109 R)
• M4: 1,613,413 km (0.039 R)
• M5: 2,341,356 km (0.064 R)
• M6: 2,898,160 km (0.074 R)
• M7: 3,673,675 km (0.051 R)
• M8: 4,331,457 km (0.037 R)
• M9: 4,901,125 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 775.5

Radius: 11

Gravity: 6.41 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.78 AU - 0.82 AU

Year: 462 Days

Day: 11.2 Hours

Environment

Temp: -148 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 76,777,125 km

• M1: 137,331 km (0.052 R)
• M2: 533,765 km (0.076 R)
• M3: 1,248,245 km (0.044 R)
• M4: 2,151,367 km (0.04 R)
• M5: 3,022,027 km (0.086 R)
• M6: 3,881,466 km (0.067 R)
• M7: 4,339,834 km (0.096 R)
• M8: 5,039,055 km (0.116 R)
• M9: 5,551,427 km (0.04 R)
• M10: 6,043,904 km (0.103 R)
• M11: 6,432,260 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.4

Radius: 15

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.89 AU - 1.01 AU

Year: 598 Days

Day: 14 Hours

Environment

Temp: -149 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,777,125 km

• M1: 186,698 km (0.091 R)
• M2: 765,492 km (0.065 R)
• M3: 1,235,080 km (0.108 R)
• M4: 1,825,992 km (0.04 R)
• M5: 2,316,673 km (0.086 R)
• M6: 3,826,414 km (0.117 R)
• M7: 4,996,718 km (0.12 R)
• M8: 6,163,582 km (0.115 R)
• M9: 7,058,776 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122

Radius: 9

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.23 AU - 1.25 AU

Year: 892 Days

Day: 10.4 Hours

Environment

Temp: -166 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,777,125 km

• M1: 111,899 km (0.08 R)
• M2: 557,850 km (0.092 R)
• M3: 1,279,062 km (0.115 R)
• M4: 1,711,250 km (0.119 R)
• M5: 2,145,383 km (0.117 R)
• M6: 2,700,541 km (0.078 R)
• M7: 3,257,942 km (0.062 R)
• M8: 4,517,257 km (0.116 R)
• M9: 5,241,161 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.4

Radius: 13.8

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.23 AU - 1.35 AU

Year: 946 Days

Day: 7.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,777,125 km

• M1: 171,589 km (0.11 R)
• M2: 696,528 km (0.112 R)
• M3: 1,175,241 km (0.116 R)
• M4: 2,108,283 km (0.034 R)
• M5: 3,101,313 km (0.11 R)
• M6: 4,678,673 km (0.11 R)
• M7: 5,141,529 km (0.076 R)
• M8: 5,597,504 km (0.116 R)
• M9: 6,675,805 km (0.098 R)
• M10: 7,723,289 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.4

Radius: 8.7

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 4.87 AU - 5.53 AU

Year: 7656 Days

Day: 13.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,777,125 km

• M1: 108,159 km (0.106 R)
• M2: 510,129 km (0.111 R)
• M3: 1,186,162 km (0.117 R)
• M4: 2,962,487 km (0.088 R)
• M5: 3,566,712 km (0.115 R)
• M6: 3,909,441 km (0.105 R)
• M7: 6,144,583 km (0.094 R)
• M8: 6,928,177 km (0.083 R)
• M9: 9,356,599 km (0.086 R)
• M10: 10,652,116 km (0.079 R)
• M11: 11,320,071 km (0.104 R)
• M12: 13,853,660 km (0.105 R)
• M13: 14,866,887 km (0.089 R)
• M14: 17,100,084 km (0.044 R)
• M15: 21,794,166 km (0.116 R)
• M16: 23,457,844 km (0.118 R)
• M17: 24,207,030 km (0.095 R)
• M18: 27,117,905 km (0.052 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403

Radius: 12.7

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 5.34 AU - 5.52 AU

Year: 8170 Days

Day: 12 Hours

Environment

Temp: -219 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 76,777,125 km

• M1: 157,975 km (0.103 R)
• M2: 572,062 km (0.1 R)
• M3: 1,229,395 km (0.073 R)
• M4: 1,734,438 km (0.073 R)
• M5: 2,601,657 km (0.111 R)
• M6: 3,449,428 km (0.065 R)
• M7: 4,095,242 km (0.077 R)
• M8: 4,658,178 km (0.078 R)
• M9: 6,099,255 km (0.087 R)
• M10: 6,697,497 km (0.082 R)
• M11: 7,261,630 km (0.107 R)
• M12: 7,705,487 km (0.071 R)
• M13: 8,325,570 km (0.115 R)
• M14: 8,729,933 km (0.093 R)
• M15: 10,904,488 km (0.043 R)
• M16: 12,664,357 km (0.112 R)
• M17: 13,363,877 km (0.069 R)
• M18: 14,548,393 km (0.108 R)
• M19: 15,255,991 km (0.104 R)
• M20: 16,867,908 km (0.064 R)
• M21: 19,073,878 km (0.073 R)
• M22: 20,501,042 km (0.117 R)
• M23: 23,566,751 km (0.103 R)
• M24: 27,903,294 km (0.089 R)
• M25: 34,371,906 km (0.105 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 893.1

Radius: 5.9

Gravity: 25.66 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 8.47 AU - 9.75 AU

Year: 17754 Days

Day: 22.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 76,777,125 km

• M1: 73,303 km (0.056 R)
• M2: 279,299 km (0.099 R)
• M3: 520,750 km (0.069 R)
• M4: 835,654 km (0.116 R)
• M5: 1,094,458 km (0.071 R)
• M6: 1,330,374 km (0.08 R)
• M7: 1,566,439 km (0.092 R)
• M8: 3,141,705 km (0.119 R)
• M9: 3,390,337 km (0.087 R)
• M10: 4,085,967 km (0.099 R)
• M11: 4,945,706 km (0.114 R)
• M12: 5,244,602 km (0.095 R)
• M13: 5,555,616 km (0.058 R)
• M14: 7,298,581 km (0.112 R)
• M15: 9,661,330 km (0.091 R)
• M16: 9,951,849 km (0.1 R)
• M17: 10,308,191 km (0.07 R)
• M18: 10,734,545 km (0.113 R)
• M19: 11,172,717 km (0.089 R)
• M20: 12,974,623 km (0.032 R)
• M21: 15,272,596 km (0.054 R)
• M22: 15,587,649 km (0.109 R)
• M23: 16,149,240 km (0.108 R)
• M24: 20,369,844 km (0.099 R)
• M25: 23,454,253 km (0.091 R)
• M26: 43,773,235 km (0.109 R)
• M27: 50,583,079 km (0.105 R)
• M28: 52,701,983 km (0.077 R)
• M29: 55,063,685 km (0.106 R)
• M30: 63,579,245 km (0.056 R)
• M31: 65,837,275 km (0.104 R)
• M32: 67,301,688 km (0.107 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 253 - 15,447 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit