🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.57 AU - 0.69 AU

Year: 328 Days

Day: 33.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 48 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 971.6

Radius: 10.9

Gravity: 8.18 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.76 AU - 1.04 AU

Year: 560 Days

Day: 6.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 33,766,848 km

• M1: 135,536 km (0.028 R)
• M2: 531,222 km (0.057 R)
• M3: 1,052,720 km (0.116 R)
• M4: 1,396,795 km (0.101 R)
• M5: 1,759,570 km (0.112 R)
• M6: 2,214,796 km (0.111 R)
• M7: 2,873,775 km (0.117 R)
• M8: 3,840,925 km (0.058 R)
• M9: 4,238,108 km (0.101 R)
• M10: 4,877,339 km (0.069 R)
• M11: 5,470,046 km (0.071 R)
• M12: 6,032,534 km (0.094 R)
• M13: 6,799,971 km (0.098 R)
• M14: 7,361,562 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.4

Radius: 10.6

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.2 AU - 1.22 AU

Year: 873 Days

Day: 5.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,766,848 km

• M1: 131,796 km (0.107 R)
• M2: 916,736 km (0.113 R)
• M3: 1,325,736 km (0.118 R)
• M4: 1,670,410 km (0.087 R)
• M5: 2,128,479 km (0.033 R)
• M6: 3,064,213 km (0.049 R)
• M7: 3,651,684 km (0.06 R)
• M8: 4,269,074 km (0.099 R)
• M9: 4,672,091 km (0.039 R)
• M10: 5,100,390 km (0.095 R)
• M11: 5,537,515 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809.7

Radius: 10.7

Gravity: 7.07 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.15 AU - 3.27 AU

Year: 2927 Days

Day: 7.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 153 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,766,848 km

• M1: 136,732 km (0.064 R)
• M2: 579,991 km (0.091 R)
• M3: 1,005,896 km (0.06 R)
• M4: 1,470,697 km (0.119 R)
• M5: 2,976,100 km (0.093 R)
• M6: 4,202,503 km (0.116 R)
• M7: 4,881,977 km (0.093 R)
• M8: 6,316,471 km (0.091 R)
• M9: 6,722,779 km (0.1 R)
• M10: 7,239,639 km (0.06 R)
• M11: 7,717,455 km (0.049 R)
• M12: 12,648,051 km (0.051 R)
• M13: 13,389,608 km (0.116 R)
• M14: 13,964,512 km (0.063 R)
• M15: 14,756,484 km (0.107 R)
• M16: 15,788,410 km (0.065 R)
• M17: 17,937,981 km (0.105 R)
• M18: 19,172,912 km (0.088 R)
• M19: 20,842,873 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 509.3

Radius: 11.5

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 2.22 AU - 3.36 AU

Year: 3057 Days

Day: 14.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 33,766,848 km

• M1: 143,016 km (0.112 R)
• M2: 532,419 km (0.083 R)
• M3: 891,753 km (0.075 R)
• M4: 1,644,829 km (0.1 R)
• M5: 2,072,230 km (0.094 R)
• M6: 2,588,492 km (0.119 R)
• M7: 3,088,598 km (0.106 R)
• M8: 4,305,576 km (0.072 R)
• M9: 4,805,532 km (0.116 R)
• M10: 7,629,043 km (0.072 R)
• M11: 8,595,894 km (0.072 R)
• M12: 10,197,040 km (0.101 R)
• M13: 10,694,602 km (0.12 R)
• M14: 11,491,510 km (0.101 R)
• M15: 13,203,957 km (0.062 R)
• M16: 14,168,265 km (0.114 R)
• M17: 14,740,028 km (0.102 R)
• M18: 15,676,660 km (0.112 R)
• M19: 16,185,442 km (0.113 R)
• M20: 19,706,228 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.9

Radius: 9.2

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.84 AU - 3.16 AU

Year: 3409 Days

Day: 5.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,766,848 km

• M1: 115,041 km (0.097 R)
• M2: 492,626 km (0.061 R)
• M3: 790,625 km (0.036 R)
• M4: 2,108,283 km (0.097 R)
• M5: 2,469,113 km (0.088 R)
• M6: 2,986,572 km (0.083 R)
• M7: 3,593,939 km (0.099 R)
• M8: 4,091,203 km (0.091 R)
• M9: 4,389,351 km (0.045 R)
• M10: 4,981,908 km (0.067 R)
• M11: 5,783,304 km (0.034 R)
• M12: 6,354,319 km (0.11 R)
• M13: 7,704,290 km (0.086 R)
• M14: 9,454,885 km (0.092 R)
• M15: 12,137,922 km (0.102 R)
• M16: 12,711,780 km (0.119 R)
• M17: 14,009,093 km (0.06 R)
• M18: 14,542,259 km (0.077 R)
• M19: 19,724,479 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 181.4

Radius: 8.9

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.6 AU - 4.12 AU

Year: 4040 Days

Day: 10.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,766,848 km

• M1: 115,340 km (0.118 R)
• M2: 446,998 km (0.108 R)
• M3: 785,090 km (0.047 R)
• M4: 1,305,092 km (0.103 R)
• M5: 2,005,509 km (0.106 R)
• M6: 2,501,426 km (0.108 R)
• M7: 3,354,583 km (0.082 R)
• M8: 5,204,809 km (0.096 R)
• M9: 7,889,792 km (0.051 R)
• M10: 8,319,138 km (0.119 R)
• M11: 9,494,678 km (0.085 R)
• M12: 12,172,330 km (0.081 R)
• M13: 12,456,865 km (0.077 R)
• M14: 13,466,501 km (0.105 R)
• M15: 13,903,028 km (0.031 R)
• M16: 15,505,221 km (0.12 R)
• M17: 16,081,771 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 938.1

Radius: 14.4

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 3.26 AU - 4.54 AU

Year: 5052 Days

Day: 6.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,766,848 km

• M1: 179,517 km (0.088 R)
• M2: 749,186 km (0.108 R)
• M3: 1,209,050 km (0.069 R)
• M4: 1,785,600 km (0.106 R)
• M5: 2,943,787 km (0.118 R)
• M6: 3,448,381 km (0.105 R)
• M7: 4,713,679 km (0.115 R)
• M8: 6,903,343 km (0.094 R)
• M9: 8,379,276 km (0.101 R)
• M10: 9,747,947 km (0.053 R)
• M11: 12,048,762 km (0.12 R)
• M12: 14,348,979 km (0.036 R)
• M13: 15,692,966 km (0.065 R)
• M14: 21,098,685 km (0.078 R)
• M15: 23,539,524 km (0.112 R)
• M16: 24,017,340 km (0.071 R)
• M17: 27,457,941 km (0.1 R)
• M18: 32,868,148 km (0.071 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: 277 - 16,753 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit