🌌 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: 4.5

Radius: 1.83

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.63 AU - 0.63 AU

Year: 328 Days

Day: 34.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,048,748 km

• M1: 42,785 km (0.098 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.5 AU - 0.78 AU

Year: 336 Days

Day: 43.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 26.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 31,048,748 km

• M1: 86,168 km (0.086 R)
• M2: 370,853 km (0.103 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.58 AU - 0.76 AU

Year: 360 Days

Day: 30.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 36.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.5

Radius: 11

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.76 AU - 0.98 AU

Year: 532 Days

Day: 14.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,048,748 km

• M1: 136,732 km (0.101 R)
• M2: 610,060 km (0.102 R)
• M3: 1,102,237 km (0.038 R)
• M4: 1,822,252 km (0.117 R)
• M5: 2,595,074 km (0.108 R)
• M6: 3,713,468 km (0.091 R)
• M7: 4,352,999 km (0.113 R)
• M8: 5,144,372 km (0.116 R)
• M9: 5,591,819 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460.8

Radius: 10.3

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.11 AU - 1.47 AU

Year: 961 Days

Day: 10.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 31,048,748 km

• M1: 128,056 km (0.073 R)
• M2: 529,876 km (0.092 R)
• M3: 1,131,110 km (0.077 R)
• M4: 1,939,088 km (0.098 R)
• M5: 2,568,595 km (0.109 R)
• M6: 2,895,018 km (0.12 R)
• M7: 3,777,197 km (0.099 R)
• M8: 4,777,707 km (0.11 R)
• M9: 5,312,220 km (0.058 R)
• M10: 6,846,646 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.2

Radius: 8.3

Gravity: 5.91 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.27 AU - 2.11 AU

Year: 1441 Days

Day: 14.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,048,748 km

• M1: 103,223 km (0.118 R)
• M2: 405,560 km (0.118 R)
• M3: 715,078 km (0.117 R)
• M4: 1,309,430 km (0.117 R)
• M5: 1,646,474 km (0.118 R)
• M6: 2,189,814 km (0.115 R)
• M7: 2,795,685 km (0.105 R)
• M8: 3,478,749 km (0.071 R)
• M9: 4,217,014 km (0.09 R)
• M10: 4,479,110 km (0.103 R)
• M11: 5,036,362 km (0.094 R)
• M12: 6,701,985 km (0.117 R)
• M13: 7,840,724 km (0.099 R)
• M14: 8,538,897 km (0.109 R)
• M15: 9,513,527 km (0.073 R)
• M16: 10,688,618 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 215.9

Radius: 12.1

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.61 AU - 2.11 AU

Year: 1664 Days

Day: 5.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,048,748 km

• M1: 150,944 km (0.12 R)
• M2: 912,397 km (0.112 R)
• M3: 1,903,334 km (0.089 R)
• M4: 2,291,989 km (0.093 R)
• M5: 4,299,892 km (0.095 R)
• M6: 5,431,001 km (0.108 R)
• M7: 6,161,039 km (0.054 R)
• M8: 6,572,283 km (0.1 R)
• M9: 9,325,482 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450.9

Radius: 12.8

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.26 AU - 3.52 AU

Year: 3223 Days

Day: 10.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 31,048,748 km

• M1: 159,172 km (0.114 R)
• M2: 648,208 km (0.105 R)
• M3: 1,112,410 km (0.107 R)
• M4: 1,620,295 km (0.109 R)
• M5: 2,460,436 km (0.08 R)
• M6: 4,337,590 km (0.106 R)
• M7: 4,747,937 km (0.118 R)
• M8: 5,255,672 km (0.115 R)
• M9: 5,748,448 km (0.101 R)
• M10: 6,573,630 km (0.082 R)
• M11: 8,101,323 km (0.084 R)
• M12: 11,972,617 km (0.064 R)
• M13: 13,634,948 km (0.104 R)
• M14: 14,237,678 km (0.058 R)
• M15: 14,857,911 km (0.111 R)
• M16: 15,297,878 km (0.066 R)
• M17: 16,050,505 km (0.086 R)
• M18: 18,067,832 km (0.089 R)
• M19: 18,625,832 km (0.047 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.3

Radius: 9

Gravity: 10.88 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.92 AU - 3.28 AU

Year: 3581 Days

Day: 6.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 31,048,748 km

• M1: 111,899 km (0.105 R)
• M2: 410,048 km (0.068 R)
• M3: 797,656 km (0.028 R)
• M4: 1,113,756 km (0.11 R)
• M5: 1,915,900 km (0.105 R)
• M6: 2,236,937 km (0.089 R)
• M7: 2,626,639 km (0.1 R)
• M8: 3,006,768 km (0.111 R)
• M9: 3,645,700 km (0.096 R)
• M10: 6,441,236 km (0.073 R)
• M11: 6,782,468 km (0.114 R)
• M12: 8,748,184 km (0.11 R)
• M13: 9,963,517 km (0.105 R)
• M14: 10,761,921 km (0.12 R)
• M15: 11,830,499 km (0.092 R)
• M16: 12,155,276 km (0.033 R)
• M17: 12,533,459 km (0.09 R)
• M18: 13,017,408 km (0.108 R)
• M19: 15,024,563 km (0.072 R)
• M20: 16,186,938 km (0.085 R)
• M21: 17,052,960 km (0.073 R)
• M22: 17,647,313 km (0.102 R)
• M23: 18,317,062 km (0.117 R)
• M24: 19,707,126 km (0.088 R)
• M25: 20,098,175 km (0.111 R)
• M26: 22,910,316 km (0.107 R)
• M27: 23,415,208 km (0.108 R)
• M28: 24,223,785 km (0.117 R)
• M29: 25,974,379 km (0.095 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.7

Radius: 10.1

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 3.31 AU - 4.89 AU

Year: 5446 Days

Day: 7 Hours

Environment

Temp: -206 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 31,048,748 km

• M1: 128,654 km (0.116 R)
• M2: 450,439 km (0.057 R)
• M3: 887,564 km (0.113 R)
• M4: 2,164,681 km (0.071 R)
• M5: 2,706,225 km (0.087 R)
• M6: 5,732,590 km (0.053 R)
• M7: 6,541,316 km (0.049 R)
• M8: 8,269,920 km (0.107 R)
• M9: 10,239,974 km (0.091 R)
• M10: 13,275,913 km (0.105 R)
• M11: 14,133,259 km (0.079 R)
• M12: 15,721,988 km (0.092 R)
• M13: 16,317,238 km (0.096 R)
• M14: 16,927,298 km (0.1 R)
• M15: 18,063,943 km (0.109 R)
• M16: 18,519,468 km (0.054 R)
• M17: 19,453,408 km (0.099 R)
• M18: 23,275,035 km (0.109 R)
• M19: 26,056,508 km (0.114 R)
• M20: 28,875,231 km (0.063 R)
• M21: 30,221,313 km (0.091 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 253 - 18,450 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit