🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.57 AU - 0.65 AU

Year: 313 Days

Day: 19.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 436.3

Radius: 12.4

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.69 AU - 0.71 AU

Year: 384 Days

Day: 11 Hours

Environment

Temp: -134 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,639,309 km

• M1: 154,235 km (0.115 R)
• M2: 625,768 km (0.117 R)
• M3: 1,044,941 km (0.082 R)
• M4: 1,698,684 km (0.091 R)
• M5: 2,171,563 km (0.05 R)
• M6: 2,722,980 km (0.119 R)
• M7: 3,291,452 km (0.111 R)
• M8: 4,682,114 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.8

Radius: 8.3

Gravity: 10.39 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.66 AU - 0.92 AU

Year: 461 Days

Day: 6.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,639,309 km

• M1: 103,372 km (0.053 R)
• M2: 467,793 km (0.104 R)
• M3: 753,674 km (0.105 R)
• M4: 1,103,733 km (0.088 R)
• M5: 1,365,679 km (0.065 R)
• M6: 1,768,097 km (0.068 R)
• M7: 2,284,808 km (0.11 R)
• M8: 2,801,669 km (0.102 R)
• M9: 3,168,632 km (0.067 R)
• M10: 3,567,460 km (0.082 R)
• M11: 4,067,865 km (0.109 R)
• M12: 4,451,285 km (0.083 R)
• M13: 4,952,587 km (0.101 R)
• M14: 5,356,950 km (0.118 R)
• M15: 6,085,791 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.9

Radius: 14.4

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.63 AU - 1.03 AU

Year: 496 Days

Day: 14.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,639,309 km

• M1: 179,517 km (0.107 R)
• M2: 634,594 km (0.106 R)
• M3: 1,105,977 km (0.057 R)
• M4: 1,736,233 km (0.088 R)
• M5: 2,539,723 km (0.107 R)
• M6: 3,058,828 km (0.115 R)
• M7: 3,580,924 km (0.094 R)
• M8: 4,327,268 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 214.5

Radius: 12.7

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.02 AU - 1.66 AU

Year: 1018 Days

Day: 5.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 29,639,309 km

• M1: 157,975 km (0.119 R)
• M2: 869,014 km (0.118 R)
• M3: 1,280,857 km (0.091 R)
• M4: 2,116,211 km (0.106 R)
• M5: 2,901,002 km (0.088 R)
• M6: 3,564,917 km (0.093 R)
• M7: 4,647,407 km (0.083 R)
• M8: 5,737,378 km (0.086 R)
• M9: 6,868,188 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544

Radius: 8.3

Gravity: 7.9 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.99 AU - 2.19 AU

Year: 1982 Days

Day: 9.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 45.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,639,309 km

• M1: 103,372 km (0.091 R)
• M2: 425,157 km (0.106 R)
• M3: 785,090 km (0.068 R)
• M4: 1,143,676 km (0.096 R)
• M5: 1,649,317 km (0.09 R)
• M6: 2,021,815 km (0.027 R)
• M7: 3,088,298 km (0.099 R)
• M8: 3,438,507 km (0.084 R)
• M9: 3,727,081 km (0.09 R)
• M10: 4,451,135 km (0.082 R)
• M11: 4,836,350 km (0.073 R)
• M12: 5,177,882 km (0.113 R)
• M13: 6,350,130 km (0.074 R)
• M14: 6,734,148 km (0.047 R)
• M15: 8,549,219 km (0.042 R)
• M16: 9,569,327 km (0.094 R)
• M17: 10,108,777 km (0.104 R)
• M18: 10,421,137 km (0.096 R)
• M19: 10,955,950 km (0.1 R)
• M20: 12,235,909 km (0.079 R)
• M21: 14,208,656 km (0.093 R)
• M22: 14,866,288 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 63.7

Radius: 11.8

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 2.68 AU - 2.9 AU

Year: 3057 Days

Day: 8.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,639,309 km

• M1: 148,700 km (0.092 R)
• M2: 1,031,477 km (0.071 R)
• M3: 1,616,704 km (0.111 R)
• M4: 2,070,435 km (0.099 R)
• M5: 3,053,592 km (0.1 R)
• M6: 4,096,738 km (0.115 R)
• M7: 6,045,998 km (0.115 R)
• M8: 6,583,952 km (0.077 R)
• M9: 7,681,851 km (0.099 R)
• M10: 8,261,842 km (0.103 R)
• M11: 8,655,733 km (0.074 R)
• M12: 9,623,930 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.8

Radius: 15

Gravity: 2.39 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 3.11 AU - 4.09 AU

Year: 4481 Days

Day: 11 Hours

Environment

Temp: -211 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 29,639,309 km

• M1: 186,997 km (0.063 R)
• M2: 853,605 km (0.078 R)
• M3: 1,337,405 km (0.066 R)
• M4: 2,318,468 km (0.11 R)
• M5: 7,448,029 km (0.117 R)
• M6: 9,707,705 km (0.085 R)
• M7: 10,951,761 km (0.083 R)
• M8: 12,160,063 km (0.075 R)
• M9: 16,719,507 km (0.026 R)
• M10: 17,537,209 km (0.09 R)
• M11: 19,252,648 km (0.047 R)
• M12: 21,010,572 km (0.107 R)
• M13: 21,551,368 km (0.075 R)
• M14: 24,545,121 km (0.081 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 293.4

Radius: 8.4

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 3.83 AU - 5.51 AU

Year: 6620 Days

Day: 11.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 29,639,309 km

• M1: 104,419 km (0.09 R)
• M2: 441,463 km (0.05 R)
• M3: 1,000,361 km (0.097 R)
• M4: 2,173,807 km (0.05 R)
• M5: 2,449,516 km (0.072 R)
• M6: 2,731,208 km (0.072 R)
• M7: 3,688,784 km (0.112 R)
• M8: 4,038,245 km (0.119 R)
• M9: 5,522,405 km (0.095 R)
• M10: 5,834,766 km (0.079 R)
• M11: 6,495,390 km (0.067 R)
• M12: 6,973,804 km (0.106 R)
• M13: 9,204,159 km (0.055 R)
• M14: 11,639,163 km (0.102 R)
• M15: 12,393,286 km (0.068 R)
• M16: 13,229,688 km (0.106 R)
• M17: 13,946,411 km (0.057 R)
• M18: 14,796,875 km (0.107 R)
• M19: 16,252,163 km (0.049 R)
• M20: 16,777,401 km (0.101 R)
• M21: 18,295,820 km (0.086 R)
• M22: 22,381,786 km (0.087 R)
• M23: 25,290,567 km (0.062 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 117.6

Radius: 4.9

Gravity: 4.9 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.26 AU - 8.42 AU

Year: 11735 Days

Day: 20.9 Hours

Environment

Temp: -222 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 29,639,309 km

• M1: 70,311 km (0.11 R)
• M2: 276,906 km (0.114 R)
• M3: 1,223,411 km (0.04 R)
• M4: 2,445,626 km (0.119 R)
• M5: 3,498,346 km (0.11 R)
• M6: 4,172,135 km (0.119 R)
• M7: 5,625,628 km (0.105 R)
• M8: 6,676,104 km (0.032 R)
• M9: 7,008,511 km (0.104 R)
• M10: 8,372,843 km (0.093 R)
• M11: 9,862,389 km (0.047 R)
• M12: 10,692,209 km (0.081 R)
• M13: 11,379,312 km (0.08 R)
• M14: 11,998,348 km (0.063 R)
• M15: 20,702,550 km (0.062 R)
• M16: 22,868,727 km (0.119 R)
• M17: 24,393,728 km (0.039 R)
• M18: 27,139,896 km (0.05 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 408 - 16,962 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit