🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.5

Radius: 0.76

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.42 AU - 0.68 AU

Year: 259 Days

Day: 38.3 Hours

Environment

Temp: -121 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,246,689 km

• M1: 18,550 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187

Radius: 8.7

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.71 AU - 0.99 AU

Year: 498 Days

Day: 11.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,246,689 km

• M1: 108,458 km (0.114 R)
• M2: 455,226 km (0.11 R)
• M3: 739,911 km (0.114 R)
• M4: 1,039,256 km (0.098 R)
• M5: 1,432,549 km (0.111 R)
• M6: 1,777,223 km (0.108 R)
• M7: 2,574,430 km (0.092 R)
• M8: 2,932,417 km (0.072 R)
• M9: 3,240,439 km (0.1 R)
• M10: 3,692,375 km (0.051 R)
• M11: 4,149,247 km (0.057 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.1

Radius: 9.1

Gravity: 6.74 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.12 AU - 1.64 AU

Year: 1031 Days

Day: 8.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 70,246,689 km

• M1: 113,246 km (0.079 R)
• M2: 555,756 km (0.076 R)
• M3: 844,330 km (0.073 R)
• M4: 1,182,422 km (0.115 R)
• M5: 1,619,696 km (0.113 R)
• M6: 1,943,426 km (0.113 R)
• M7: 2,443,083 km (0.113 R)
• M8: 2,772,647 km (0.067 R)
• M9: 3,295,192 km (0.115 R)
• M10: 3,835,839 km (0.091 R)
• M11: 4,283,436 km (0.111 R)
• M12: 4,712,183 km (0.039 R)
• M13: 5,226,202 km (0.111 R)
• M14: 6,322,754 km (0.094 R)
• M15: 6,652,917 km (0.115 R)
• M16: 7,541,528 km (0.114 R)
• M17: 9,467,301 km (0.081 R)
• M18: 9,783,551 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 613.6

Radius: 13.7

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 1.1 AU - 1.7 AU

Year: 1053 Days

Day: 14.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,246,689 km

• M1: 170,392 km (0.098 R)
• M2: 730,935 km (0.112 R)
• M3: 1,291,179 km (0.077 R)
• M4: 1,950,158 km (0.115 R)
• M5: 2,753,050 km (0.1 R)
• M6: 3,329,001 km (0.086 R)
• M7: 4,000,546 km (0.055 R)
• M8: 5,378,791 km (0.088 R)
• M9: 6,416,253 km (0.048 R)
• M10: 7,858,077 km (0.085 R)
• M11: 8,454,374 km (0.03 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.3

Radius: 8.3

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.65 AU - 2.29 AU

Year: 1758 Days

Day: 11.9 Hours

Environment

Temp: -197 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,246,689 km

• M1: 103,372 km (0.11 R)
• M2: 509,680 km (0.09 R)
• M3: 864,975 km (0.095 R)
• M4: 1,324,839 km (0.064 R)
• M5: 1,730,847 km (0.115 R)
• M6: 3,698,508 km (0.117 R)
• M7: 4,193,677 km (0.114 R)
• M8: 6,324,400 km (0.098 R)
• M9: 6,606,092 km (0.094 R)
• M10: 6,964,379 km (0.116 R)
• M11: 8,476,963 km (0.077 R)
• M12: 8,900,325 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.5

Radius: 10

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 5.34 AU - 6.34 AU

Year: 8973 Days

Day: 7.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 70,246,689 km

• M1: 124,316 km (0.036 R)
• M2: 477,367 km (0.115 R)
• M3: 1,410,858 km (0.075 R)
• M4: 2,846,997 km (0.098 R)
• M5: 3,471,568 km (0.119 R)
• M6: 3,853,641 km (0.057 R)
• M7: 4,370,951 km (0.107 R)
• M8: 5,387,468 km (0.119 R)
• M9: 6,953,907 km (0.031 R)
• M10: 7,841,920 km (0.108 R)
• M11: 12,216,312 km (0.103 R)
• M12: 12,655,232 km (0.088 R)
• M13: 13,161,770 km (0.105 R)
• M14: 13,506,743 km (0.07 R)
• M15: 14,275,227 km (0.105 R)
• M16: 15,387,039 km (0.11 R)
• M17: 16,688,989 km (0.116 R)
• M18: 18,705,269 km (0.071 R)
• M19: 26,081,042 km (0.096 R)
• M20: 28,402,801 km (0.103 R)
• M21: 29,076,889 km (0.062 R)
• M22: 29,860,184 km (0.043 R)
• M23: 32,086,948 km (0.078 R)
• M24: 32,818,033 km (0.114 R)
• M25: 34,749,192 km (0.097 R)
• M26: 38,367,216 km (0.109 R)
• M27: 38,954,388 km (0.025 R)
• M28: 39,906,279 km (0.086 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 846.2

Radius: 6.7

Gravity: 18.85 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 5.7 AU - 8.1 AU

Year: 11524 Days

Day: 16.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 70,246,689 km

• M1: 83,326 km (0.117 R)
• M2: 297,700 km (0.114 R)
• M3: 613,650 km (0.11 R)
• M4: 834,756 km (0.044 R)
• M5: 1,075,459 km (0.117 R)
• M6: 1,577,210 km (0.118 R)
• M7: 2,321,609 km (0.075 R)
• M8: 3,229,968 km (0.097 R)
• M9: 3,509,716 km (0.113 R)
• M10: 3,861,121 km (0.108 R)
• M11: 4,571,412 km (0.044 R)
• M12: 4,891,850 km (0.098 R)
• M13: 5,471,093 km (0.052 R)
• M14: 5,869,622 km (0.062 R)
• M15: 7,793,750 km (0.088 R)
• M16: 8,392,590 km (0.105 R)
• M17: 9,577,854 km (0.086 R)
• M18: 10,647,778 km (0.088 R)
• M19: 12,833,253 km (0.115 R)
• M20: 15,514,197 km (0.043 R)
• M21: 17,598,843 km (0.109 R)
• M22: 20,201,846 km (0.074 R)
• M23: 21,862,981 km (0.066 R)
• M24: 24,088,848 km (0.101 R)
• M25: 28,020,878 km (0.074 R)
• M26: 29,861,081 km (0.107 R)
• M27: 30,529,485 km (0.027 R)
• M28: 31,435,898 km (0.109 R)
• M29: 37,770,470 km (0.097 R)
• M30: 39,477,233 km (0.117 R)
• M31: 42,202,457 km (0.092 R)
• M32: 44,471,109 km (0.086 R)
• M33: 51,443,865 km (0.094 R)
• M34: 56,026,048 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 731.6

Radius: 4.9

Gravity: 30.47 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 8.85 AU - 9.15 AU

Year: 17167 Days

Day: 22.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 70,246,689 km

• M1: 60,886 km (0.113 R)
• M2: 353,799 km (0.06 R)
• M3: 1,352,365 km (0.087 R)
• M4: 1,720,076 km (0.037 R)
• M5: 5,563,694 km (0.088 R)
• M6: 5,958,483 km (0.064 R)
• M7: 6,245,711 km (0.091 R)
• M8: 7,117,717 km (0.111 R)
• M9: 7,301,423 km (0.098 R)
• M10: 13,058,847 km (0.112 R)
• M11: 13,473,682 km (0.074 R)
• M12: 14,919,844 km (0.066 R)
• M13: 16,148,941 km (0.109 R)
• M14: 16,707,389 km (0.037 R)
• M15: 17,361,132 km (0.103 R)
• M16: 21,550,620 km (0.097 R)
• M17: 23,622,401 km (0.096 R)
• M18: 31,978,340 km (0.086 R)
• M19: 41,958,164 km (0.101 R)
• M20: 44,083,052 km (0.093 R)
• M21: 48,875,569 km (0.045 R)
• M22: 55,071,015 km (0.073 R)
• M23: 67,955,880 km (0.093 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 386 - 18,741 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit