🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.51 AU - 0.55 AU

Year: 253 Days

Day: 13.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 13.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.4

Radius: 12.4

Gravity: 6.36 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.58 AU - 0.88 AU

Year: 409 Days

Day: 7.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 75,923,915 km

• M1: 154,834 km (0.031 R)
• M2: 582,085 km (0.117 R)
• M3: 983,756 km (0.084 R)
• M4: 1,374,356 km (0.088 R)
• M5: 1,976,637 km (0.094 R)
• M6: 2,401,794 km (0.058 R)
• M7: 2,931,969 km (0.081 R)
• M8: 3,367,897 km (0.083 R)
• M9: 4,187,394 km (0.056 R)
• M10: 4,991,931 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374

Radius: 9.5

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.94 AU - 1.24 AU

Year: 747 Days

Day: 10.4 Hours

Environment

Temp: -169 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 75,923,915 km

• M1: 121,324 km (0.107 R)
• M2: 466,745 km (0.1 R)
• M3: 774,169 km (0.113 R)
• M4: 1,187,358 km (0.111 R)
• M5: 1,899,594 km (0.036 R)
• M6: 2,303,059 km (0.045 R)
• M7: 2,709,217 km (0.099 R)
• M8: 3,510,164 km (0.04 R)
• M9: 3,993,964 km (0.117 R)
• M10: 4,818,847 km (0.064 R)
• M11: 6,388,278 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 799.8

Radius: 10.9

Gravity: 6.73 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.9 AU - 1.32 AU

Year: 767 Days

Day: 5.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 75,923,915 km

• M1: 135,685 km (0.086 R)
• M2: 859,290 km (0.096 R)
• M3: 1,347,578 km (0.116 R)
• M4: 1,695,243 km (0.1 R)
• M5: 2,074,623 km (0.081 R)
• M6: 2,658,354 km (0.029 R)
• M7: 3,149,334 km (0.113 R)
• M8: 3,514,353 km (0.118 R)
• M9: 4,578,592 km (0.102 R)
• M10: 5,746,653 km (0.042 R)
• M11: 6,170,314 km (0.069 R)
• M12: 6,945,380 km (0.071 R)
• M13: 7,426,637 km (0.086 R)
• M14: 7,930,183 km (0.108 R)
• M15: 8,533,362 km (0.107 R)
• M16: 9,059,198 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.5

Radius: 10.1

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.14 AU - 1.16 AU

Year: 809 Days

Day: 14.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 75,923,915 km

• M1: 126,709 km (0.115 R)
• M2: 485,894 km (0.119 R)
• M3: 1,033,871 km (0.107 R)
• M4: 1,382,284 km (0.106 R)
• M5: 1,729,950 km (0.103 R)
• M6: 2,355,718 km (0.091 R)
• M7: 2,688,423 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.6

Radius: 14.4

Gravity: 0.7 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.08 AU - 3.36 AU

Year: 2943 Days

Day: 13.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 75,923,915 km

• M1: 179,966 km (0.055 R)
• M2: 655,538 km (0.102 R)
• M3: 1,253,929 km (0.098 R)
• M4: 1,716,486 km (0.097 R)
• M5: 2,557,974 km (0.038 R)
• M6: 3,629,244 km (0.117 R)
• M7: 5,817,861 km (0.074 R)
• M8: 6,648,578 km (0.092 R)
• M9: 7,143,448 km (0.047 R)
• M10: 8,152,037 km (0.038 R)
• M11: 10,288,893 km (0.107 R)
• M12: 11,192,165 km (0.103 R)
• M13: 12,147,796 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.6

Radius: 10.7

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 2.65 AU - 3.43 AU

Year: 3477 Days

Day: 10 Hours

Environment

Temp: -204 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 75,923,915 km

• M1: 133,142 km (0.11 R)
• M2: 672,143 km (0.091 R)
• M3: 1,207,404 km (0.115 R)
• M4: 1,547,440 km (0.118 R)
• M5: 2,851,485 km (0.076 R)
• M6: 3,235,353 km (0.093 R)
• M7: 4,067,117 km (0.116 R)
• M8: 4,489,731 km (0.11 R)
• M9: 5,059,250 km (0.079 R)
• M10: 5,498,769 km (0.12 R)
• M11: 6,315,573 km (0.112 R)
• M12: 7,271,803 km (0.078 R)
• M13: 8,321,830 km (0.093 R)
• M14: 8,970,786 km (0.113 R)
• M15: 9,653,102 km (0.109 R)
• M16: 10,063,748 km (0.081 R)
• M17: 10,760,724 km (0.12 R)
• M18: 12,600,479 km (0.106 R)
• M19: 16,100,920 km (0.04 R)
• M20: 16,520,093 km (0.118 R)
• M21: 17,490,235 km (0.119 R)
• M22: 18,383,933 km (0.105 R)
• M23: 20,383,907 km (0.072 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 26.2

Radius: 14.5

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.09 AU - 3.83 AU

Year: 4222 Days

Day: 8.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 75,923,915 km

• M1: 214,823 km (0.082 R)
• M2: 1,076,057 km (0.056 R)
• M3: 1,622,389 km (0.105 R)
• M4: 5,886,377 km (0.08 R)
• M5: 6,610,132 km (0.115 R)
• M6: 8,086,812 km (0.051 R)
• M7: 8,694,179 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 771.4

Radius: 6.1

Gravity: 20.73 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 9.18 AU - 9.54 AU

Year: 18786 Days

Day: 17.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 75,923,915 km

• M1: 75,846 km (0.098 R)
• M2: 461,809 km (0.114 R)
• M3: 758,461 km (0.085 R)
• M4: 1,304,194 km (0.077 R)
• M5: 1,868,926 km (0.099 R)
• M6: 2,291,989 km (0.052 R)
• M7: 2,679,597 km (0.12 R)
• M8: 3,190,474 km (0.084 R)
• M9: 5,303,394 km (0.115 R)
• M10: 5,898,345 km (0.114 R)
• M11: 6,106,286 km (0.106 R)
• M12: 7,033,643 km (0.063 R)
• M13: 8,675,480 km (0.107 R)
• M14: 9,387,266 km (0.051 R)
• M15: 11,114,075 km (0.071 R)
• M16: 11,953,019 km (0.099 R)
• M17: 13,467,548 km (0.056 R)
• M18: 14,646,230 km (0.079 R)
• M19: 15,417,108 km (0.12 R)
• M20: 16,955,423 km (0.116 R)
• M21: 18,065,289 km (0.049 R)
• M22: 18,328,133 km (0.117 R)
• M23: 23,092,975 km (0.107 R)
• M24: 26,091,813 km (0.092 R)
• M25: 29,460,907 km (0.11 R)
• M26: 29,947,250 km (0.106 R)
• M27: 30,315,560 km (0.108 R)
• M28: 33,240,048 km (0.111 R)
• M29: 35,518,723 km (0.059 R)
• M30: 36,766,369 km (0.112 R)
• M31: 42,356,692 km (0.063 R)
• M32: 44,233,248 km (0.092 R)
• M33: 46,164,557 km (0.038 R)
• M34: 52,117,355 km (0.035 R)
• M35: 52,650,223 km (0.097 R)
• M36: 55,185,009 km (0.088 R)
• M37: 61,677,108 km (0.108 R)
• M38: 63,477,069 km (0.071 R)
• M39: 64,900,942 km (0.083 R)
• M40: 66,138,266 km (0.1 R)
• M41: 72,782,655 km (0.086 R)
• M42: 75,696,672 km (0.102 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 381 - 10,462 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit