🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.47 AU - 0.73 AU

Year: 305 Days

Day: 18 Hours

Environment

Temp: -134 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,157,842 km

• M1: 23,337 km (0.109 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.5

Radius: 8.2

Gravity: 12.23 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.62 AU - 0.78 AU

Year: 384 Days

Day: 7.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 58,157,842 km

• M1: 102,026 km (0.112 R)
• M2: 466,745 km (0.116 R)
• M3: 1,308,533 km (0.095 R)
• M4: 1,688,810 km (0.047 R)
• M5: 1,966,015 km (0.118 R)
• M6: 3,085,905 km (0.098 R)
• M7: 3,384,053 km (0.045 R)
• M8: 3,972,272 km (0.108 R)
• M9: 4,641,573 km (0.062 R)
• M10: 5,648,217 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.6

Radius: 10.3

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.99 AU - 1.13 AU

Year: 716 Days

Day: 9.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,157,842 km

• M1: 128,205 km (0.068 R)
• M2: 524,341 km (0.067 R)
• M3: 1,325,736 km (0.108 R)
• M4: 2,090,181 km (0.09 R)
• M5: 3,114,328 km (0.099 R)
• M6: 3,562,823 km (0.101 R)
• M7: 5,108,917 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.5

Radius: 14.7

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.18 AU - 1.84 AU

Year: 1217 Days

Day: 14 Hours

Environment

Temp: -172 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 58,157,842 km

• M1: 182,809 km (0.109 R)
• M2: 685,607 km (0.078 R)
• M3: 1,265,000 km (0.111 R)
• M4: 1,922,931 km (0.099 R)
• M5: 2,423,037 km (0.108 R)
• M6: 2,931,221 km (0.066 R)
• M7: 3,421,902 km (0.097 R)
• M8: 4,054,102 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 772.8

Radius: 10.8

Gravity: 6.63 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.78 AU - 1.98 AU

Year: 1691 Days

Day: 5.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,157,842 km

• M1: 134,339 km (0.055 R)
• M2: 542,741 km (0.099 R)
• M3: 906,713 km (0.1 R)
• M4: 1,379,292 km (0.103 R)
• M5: 1,957,638 km (0.089 R)
• M6: 2,386,086 km (0.052 R)
• M7: 2,747,963 km (0.055 R)
• M8: 3,146,791 km (0.084 R)
• M9: 4,211,629 km (0.119 R)
• M10: 4,642,620 km (0.12 R)
• M11: 5,593,464 km (0.089 R)
• M12: 5,969,853 km (0.104 R)
• M13: 8,053,601 km (0.115 R)
• M14: 8,473,523 km (0.09 R)
• M15: 9,855,358 km (0.098 R)
• M16: 10,336,166 km (0.111 R)
• M17: 13,473,831 km (0.112 R)
• M18: 14,195,791 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147.3

Radius: 12.3

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 2.89 AU - 4.63 AU

Year: 4783 Days

Day: 7.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 58,157,842 km

• M1: 160,369 km (0.094 R)
• M2: 899,382 km (0.087 R)
• M3: 1,352,814 km (0.098 R)
• M4: 1,782,159 km (0.116 R)
• M5: 3,360,267 km (0.115 R)
• M6: 4,302,285 km (0.066 R)
• M7: 6,705,575 km (0.098 R)
• M8: 12,972,230 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.9

Radius: 12

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 3.93 AU - 5.89 AU

Year: 7137 Days

Day: 14.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 58,157,842 km

• M1: 149,299 km (0.113 R)
• M2: 1,879,248 km (0.085 R)
• M3: 2,468,664 km (0.119 R)
• M4: 2,945,582 km (0.087 R)
• M5: 3,503,283 km (0.097 R)
• M6: 4,042,882 km (0.12 R)
• M7: 5,973,593 km (0.084 R)
• M8: 7,254,599 km (0.058 R)
• M9: 7,994,809 km (0.088 R)
• M10: 10,353,818 km (0.069 R)
• M11: 13,586,628 km (0.078 R)
• M12: 20,161,006 km (0.098 R)
• M13: 21,016,706 km (0.088 R)
• M14: 22,102,936 km (0.025 R)
• M15: 25,207,241 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 478.3

Radius: 6.5

Gravity: 11.32 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 5.51 AU - 7.55 AU

Year: 10947 Days

Day: 17.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 58,157,842 km

• M1: 80,783 km (0.08 R)
• M2: 430,842 km (0.096 R)
• M3: 666,010 km (0.11 R)
• M4: 910,453 km (0.085 R)
• M5: 1,214,884 km (0.108 R)
• M6: 1,821,803 km (0.096 R)
• M7: 2,901,899 km (0.098 R)
• M8: 3,493,260 km (0.076 R)
• M9: 4,469,386 km (0.091 R)
• M10: 4,821,839 km (0.115 R)
• M11: 5,483,211 km (0.084 R)
• M12: 6,167,771 km (0.118 R)
• M13: 7,299,329 km (0.085 R)
• M14: 7,746,926 km (0.096 R)
• M15: 8,169,540 km (0.081 R)
• M16: 8,562,982 km (0.031 R)
• M17: 8,923,363 km (0.067 R)
• M18: 23,425,680 km (0.081 R)
• M19: 24,487,975 km (0.109 R)
• M20: 24,940,059 km (0.096 R)
• M21: 27,090,978 km (0.115 R)
• M22: 30,388,863 km (0.086 R)
• M23: 34,619,640 km (0.114 R)
• M24: 35,074,717 km (0.089 R)
• M25: 39,473,792 km (0.039 R)
• M26: 44,494,296 km (0.081 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 245.6

Radius: 5

Gravity: 9.82 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 8.04 AU - 12.96 AU

Year: 22320 Days

Day: 17.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 58,157,842 km

• M1: 62,532 km (0.078 R)
• M2: 232,026 km (0.089 R)
• M3: 647,609 km (0.058 R)
• M4: 855,251 km (0.092 R)
• M5: 1,107,024 km (0.094 R)
• M6: 1,694,345 km (0.107 R)
• M7: 2,683,337 km (0.098 R)
• M8: 3,004,972 km (0.085 R)
• M9: 3,175,065 km (0.095 R)
• M10: 3,561,626 km (0.118 R)
• M11: 4,125,012 km (0.112 R)
• M12: 4,490,479 km (0.104 R)
• M13: 5,356,202 km (0.117 R)
• M14: 6,367,334 km (0.046 R)
• M15: 7,951,426 km (0.109 R)
• M16: 8,183,901 km (0.119 R)
• M17: 9,363,480 km (0.08 R)
• M18: 9,622,733 km (0.052 R)
• M19: 10,319,411 km (0.119 R)
• M20: 11,993,860 km (0.086 R)
• M21: 14,658,048 km (0.106 R)
• M22: 16,840,532 km (0.101 R)
• M23: 17,850,018 km (0.098 R)
• M24: 18,572,127 km (0.079 R)
• M25: 18,981,726 km (0.038 R)
• M26: 20,419,062 km (0.097 R)
• M27: 25,064,674 km (0.092 R)
• M28: 26,481,516 km (0.11 R)
• M29: 27,950,866 km (0.069 R)
• M30: 29,584,625 km (0.09 R)
• M31: 31,627,832 km (0.067 R)
• M32: 32,094,278 km (0.046 R)
• M33: 34,618,892 km (0.095 R)
• M34: 41,711,925 km (0.074 R)
• M35: 47,094,008 km (0.115 R)
• M36: 48,934,062 km (0.102 R)
• M37: 49,871,891 km (0.098 R)
• M38: 55,244,998 km (0.096 R)
• M39: 56,603,346 km (0.078 R)
• M40: 57,463,534 km (0.12 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: 265 - 12,840 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit