🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 13.1 Hours

Environment

Temp: -126 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,187,757 km

• M1: 30,368 km (0.103 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.2

Radius: 13.9

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.58 AU - 0.86 AU

Year: 401 Days

Day: 13.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 51,187,757 km

• M1: 189,840 km (0.116 R)
• M2: 718,967 km (0.061 R)
• M3: 1,245,851 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.7

Radius: 8.1

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.01 AU - 1.15 AU

Year: 736 Days

Day: 10 Hours

Environment

Temp: -154 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 51,187,757 km

• M1: 100,679 km (0.12 R)
• M2: 501,302 km (0.101 R)
• M3: 1,190,799 km (0.08 R)
• M4: 1,623,885 km (0.108 R)
• M5: 2,033,185 km (0.103 R)
• M6: 2,379,504 km (0.114 R)
• M7: 2,785,363 km (0.117 R)
• M8: 3,305,066 km (0.119 R)
• M9: 4,368,407 km (0.087 R)
• M10: 4,652,195 km (0.084 R)
• M11: 4,978,617 km (0.104 R)
• M12: 5,513,130 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.8

Radius: 14

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.66 AU - 2.46 AU

Year: 1940 Days

Day: 6.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,187,757 km

• M1: 174,880 km (0.107 R)
• M2: 702,063 km (0.09 R)
• M3: 1,200,523 km (0.079 R)
• M4: 3,295,491 km (0.096 R)
• M5: 4,479,559 km (0.116 R)
• M6: 5,851,072 km (0.042 R)
• M7: 6,656,058 km (0.1 R)
• M8: 7,510,262 km (0.107 R)
• M9: 8,086,662 km (0.115 R)
• M10: 8,718,414 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 43.7

Radius: 8.5

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.91 AU - 4.31 AU

Year: 4500 Days

Day: 12.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,187,757 km

• M1: 107,112 km (0.099 R)
• M2: 380,278 km (0.101 R)
• M3: 683,812 km (0.087 R)
• M4: 1,299,706 km (0.047 R)
• M5: 1,592,170 km (0.054 R)
• M6: 3,012,452 km (0.092 R)
• M7: 3,381,959 km (0.047 R)
• M8: 4,229,431 km (0.071 R)
• M9: 8,500,899 km (0.09 R)
• M10: 9,537,313 km (0.112 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 419.5

Radius: 6.6

Gravity: 9.63 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 6.48 AU - 9.6 AU

Year: 14955 Days

Day: 18.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 51,187,757 km

• M1: 82,129 km (0.083 R)
• M2: 588,518 km (0.048 R)
• M3: 1,005,447 km (0.052 R)
• M4: 2,322,058 km (0.075 R)
• M5: 2,624,395 km (0.094 R)
• M6: 3,826,265 km (0.077 R)
• M7: 4,487,338 km (0.116 R)
• M8: 4,829,169 km (0.107 R)
• M9: 5,742,464 km (0.113 R)
• M10: 6,765,863 km (0.109 R)
• M11: 7,905,649 km (0.096 R)
• M12: 8,130,046 km (0.117 R)
• M13: 8,591,555 km (0.06 R)
• M14: 12,566,371 km (0.1 R)
• M15: 15,293,241 km (0.087 R)
• M16: 17,165,608 km (0.094 R)
• M17: 18,944,925 km (0.074 R)
• M18: 20,003,180 km (0.085 R)
• M19: 26,486,752 km (0.109 R)
• M20: 27,397,204 km (0.031 R)
• M21: 28,960,652 km (0.107 R)
• M22: 30,692,995 km (0.105 R)
• M23: 35,202,623 km (0.116 R)
• M24: 42,558,649 km (0.103 R)
• M25: 43,249,044 km (0.111 R)
• M26: 50,567,521 km (0.104 R)
• M27: 50,876,291 km (0.034 R)
• M28: 53,073,136 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 109.6

Radius: 7

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 7.04 AU - 10.18 AU

Year: 16573 Days

Day: 19.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 51,187,757 km

• M1: 88,562 km (0.116 R)
• M2: 438,322 km (0.102 R)
• M3: 983,008 km (0.059 R)
• M4: 1,405,472 km (0.097 R)
• M5: 2,004,312 km (0.076 R)
• M6: 2,293,784 km (0.111 R)
• M7: 2,538,077 km (0.096 R)
• M8: 3,648,991 km (0.093 R)
• M9: 4,260,398 km (0.091 R)
• M10: 6,168,818 km (0.116 R)
• M11: 8,258,251 km (0.109 R)
• M12: 9,707,256 km (0.118 R)
• M13: 10,778,676 km (0.028 R)
• M14: 11,772,604 km (0.077 R)
• M15: 15,858,272 km (0.045 R)
• M16: 19,052,635 km (0.112 R)
• M17: 21,789,827 km (0.089 R)
• M18: 22,810,534 km (0.116 R)
• M19: 27,303,706 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 741.5

Radius: 7.8

Gravity: 12.19 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 6.81 AU - 10.67 AU

Year: 16950 Days

Day: 22.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 51,187,757 km

• M1: 97,987 km (0.12 R)
• M2: 399,576 km (0.044 R)
• M3: 672,891 km (0.043 R)
• M4: 1,518,568 km (0.109 R)
• M5: 1,927,419 km (0.066 R)
• M6: 2,607,940 km (0.107 R)
• M7: 3,991,720 km (0.086 R)
• M8: 5,730,047 km (0.071 R)
• M9: 7,304,864 km (0.095 R)
• M10: 7,969,827 km (0.116 R)
• M11: 9,148,957 km (0.068 R)
• M12: 12,565,473 km (0.101 R)
• M13: 27,953,260 km (0.114 R)
• M14: 28,871,491 km (0.089 R)
• M15: 44,537,979 km (0.036 R)
• M16: 50,693,183 km (0.102 R)
• M17: 58,873,644 km (0.094 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 168.9

Radius: 3.5

Gravity: 13.79 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 8.51 AU - 12.43 AU

Year: 22224 Days

Day: 18.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 51,187,757 km

• M1: 47,273 km (0.054 R)
• M2: 158,574 km (0.092 R)
• M3: 273,315 km (0.09 R)
• M4: 465,100 km (0.114 R)
• M5: 610,659 km (0.109 R)
• M6: 995,275 km (0.063 R)
• M7: 1,657,395 km (0.054 R)
• M8: 2,293,186 km (0.084 R)
• M9: 2,805,858 km (0.055 R)
• M10: 3,698,957 km (0.103 R)
• M11: 4,025,380 km (0.116 R)
• M12: 5,252,381 km (0.119 R)
• M13: 11,313,040 km (0.096 R)
• M14: 11,824,365 km (0.088 R)
• M15: 12,115,034 km (0.113 R)
• M16: 12,470,030 km (0.094 R)
• M17: 12,771,170 km (0.107 R)
• M18: 13,015,613 km (0.032 R)
• M19: 16,124,855 km (0.111 R)
• M20: 17,436,081 km (0.111 R)
• M21: 18,738,031 km (0.07 R)
• M22: 19,212,705 km (0.109 R)
• M23: 19,939,451 km (0.114 R)
• M24: 22,850,925 km (0.111 R)
• M25: 25,548,025 km (0.083 R)
• M26: 27,934,410 km (0.115 R)
• M27: 30,033,269 km (0.065 R)
• M28: 35,977,241 km (0.107 R)
• M29: 40,916,962 km (0.077 R)
• M30: 41,314,594 km (0.116 R)
• M31: 41,581,177 km (0.089 R)
• M32: 41,714,917 km (0.069 R)
• M33: 42,252,572 km (0.054 R)
• M34: 45,010,409 km (0.084 R)
• M35: 45,576,038 km (0.085 R)
• M36: 49,668,737 km (0.037 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 508 - 14,829 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit