🌌 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: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.59 AU - 0.63 AU

Year: 313 Days

Day: 44.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,958,044 km

• M1: 35,455 km (0.12 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.49 AU - 0.77 AU

Year: 328 Days

Day: 35.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,958,044 km

• M1: 366,216 km (0.039 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.6

Radius: 11.6

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.81 AU - 0.93 AU

Year: 532 Days

Day: 14.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 104.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,958,044 km

• M1: 144,212 km (0.102 R)
• M2: 551,567 km (0.05 R)
• M3: 992,432 km (0.083 R)
• M4: 1,546,244 km (0.073 R)
• M5: 1,908,121 km (0.109 R)
• M6: 2,300,067 km (0.083 R)
• M7: 2,819,022 km (0.101 R)
• M8: 3,415,170 km (0.08 R)
• M9: 3,919,464 km (0.055 R)
• M10: 4,619,582 km (0.087 R)
• M11: 5,467,353 km (0.104 R)
• M12: 6,142,189 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675.3

Radius: 10.4

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.84 AU - 1.36 AU

Year: 757 Days

Day: 7.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 78,958,044 km

• M1: 129,402 km (0.059 R)
• M2: 499,058 km (0.071 R)
• M3: 958,324 km (0.1 R)
• M4: 1,395,000 km (0.107 R)
• M5: 1,820,905 km (0.068 R)
• M6: 2,437,847 km (0.084 R)
• M7: 2,866,894 km (0.099 R)
• M8: 3,577,334 km (0.104 R)
• M9: 4,072,652 km (0.063 R)
• M10: 4,629,905 km (0.06 R)
• M11: 5,040,999 km (0.087 R)
• M12: 7,200,894 km (0.11 R)
• M13: 7,660,009 km (0.1 R)
• M14: 8,138,573 km (0.049 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.8

Radius: 12.9

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.22 AU - 2.04 AU

Year: 1365 Days

Day: 9.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 78,958,044 km

• M1: 160,369 km (0.047 R)
• M2: 566,976 km (0.11 R)
• M3: 1,028,635 km (0.118 R)
• M4: 1,520,962 km (0.116 R)
• M5: 2,201,333 km (0.028 R)
• M6: 2,887,987 km (0.07 R)
• M7: 3,399,013 km (0.103 R)
• M8: 4,032,411 km (0.116 R)
• M9: 4,639,180 km (0.108 R)
• M10: 5,156,938 km (0.065 R)
• M11: 6,182,282 km (0.036 R)
• M12: 6,766,012 km (0.079 R)
• M13: 7,919,711 km (0.1 R)
• M14: 8,530,669 km (0.112 R)
• M15: 9,036,459 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 506.8

Radius: 13.3

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 1.79 AU - 2.59 AU

Year: 2126 Days

Day: 11.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 78,958,044 km

• M1: 165,455 km (0.11 R)
• M2: 582,085 km (0.098 R)
• M3: 1,030,430 km (0.112 R)
• M4: 1,585,588 km (0.066 R)
• M5: 2,052,333 km (0.112 R)
• M6: 2,571,139 km (0.102 R)
• M7: 3,054,639 km (0.116 R)
• M8: 4,114,241 km (0.093 R)
• M9: 4,864,025 km (0.056 R)
• M10: 5,428,159 km (0.078 R)
• M11: 7,755,154 km (0.075 R)
• M12: 8,314,650 km (0.1 R)
• M13: 9,155,988 km (0.102 R)
• M14: 9,580,996 km (0.053 R)
• M15: 11,984,435 km (0.111 R)
• M16: 12,454,023 km (0.106 R)
• M17: 13,851,716 km (0.096 R)
• M18: 14,588,635 km (0.115 R)
• M19: 15,442,988 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305.7

Radius: 9.5

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.38 AU - 4.38 AU

Year: 5014 Days

Day: 7.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 78,958,044 km

• M1: 121,174 km (0.061 R)
• M2: 490,531 km (0.112 R)
• M3: 803,341 km (0.091 R)
• M4: 1,400,236 km (0.095 R)
• M5: 1,871,320 km (0.075 R)
• M6: 2,430,666 km (0.117 R)
• M7: 2,975,801 km (0.075 R)
• M8: 3,446,286 km (0.074 R)
• M9: 3,965,540 km (0.052 R)
• M10: 4,746,292 km (0.107 R)
• M11: 5,287,387 km (0.099 R)
• M12: 5,652,705 km (0.099 R)
• M13: 6,760,477 km (0.101 R)
• M14: 7,223,034 km (0.096 R)
• M15: 8,006,927 km (0.109 R)
• M16: 9,782,205 km (0.119 R)
• M17: 10,214,243 km (0.106 R)
• M18: 10,907,031 km (0.078 R)
• M19: 13,316,454 km (0.076 R)
• M20: 13,847,527 km (0.059 R)
• M21: 17,052,811 km (0.085 R)
• M22: 21,435,281 km (0.049 R)
• M23: 21,964,259 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 632.5

Radius: 7.7

Gravity: 10.67 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 9.88 AU - 10.92 AU

Year: 22002 Days

Day: 20.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 78,958,044 km

• M1: 144,212 km (0.107 R)
• M2: 395,088 km (0.109 R)
• M3: 1,055,263 km (0.067 R)
• M4: 1,530,386 km (0.115 R)
• M5: 2,039,169 km (0.115 R)
• M6: 3,306,113 km (0.103 R)
• M7: 3,594,238 km (0.064 R)
• M8: 4,155,530 km (0.066 R)
• M9: 4,631,251 km (0.113 R)
• M10: 4,956,028 km (0.062 R)
• M11: 5,334,660 km (0.112 R)
• M12: 5,814,271 km (0.106 R)
• M13: 6,235,538 km (0.096 R)
• M14: 9,317,105 km (0.072 R)
• M15: 11,770,211 km (0.077 R)
• M16: 15,245,220 km (0.066 R)
• M17: 16,624,063 km (0.092 R)
• M18: 17,130,003 km (0.118 R)
• M19: 18,172,701 km (0.074 R)
• M20: 18,709,607 km (0.046 R)
• M21: 20,479,649 km (0.105 R)
• M22: 21,554,061 km (0.094 R)
• M23: 22,871,570 km (0.117 R)
• M24: 26,342,091 km (0.116 R)
• M25: 28,680,754 km (0.119 R)
• M26: 29,408,398 km (0.113 R)
• M27: 30,648,565 km (0.104 R)
• M28: 34,170,697 km (0.083 R)
• M29: 36,947,233 km (0.116 R)
• M30: 39,571,479 km (0.071 R)
• M31: 41,851,351 km (0.091 R)
• M32: 44,378,208 km (0.038 R)
• M33: 45,351,342 km (0.095 R)
• M34: 46,008,077 km (0.09 R)
• M35: 46,837,747 km (0.084 R)
• M36: 47,340,396 km (0.094 R)
• M37: 48,869,735 km (0.07 R)
• M38: 52,565,849 km (0.051 R)
• M39: 53,108,740 km (0.064 R)
• M40: 58,356,334 km (0.095 R)
• M41: 63,324,779 km (0.07 R)
• M42: 66,648,395 km (0.084 R)
• M43: 67,071,757 km (0.12 R)
• M44: 70,743,786 km (0.026 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: 304 - 15,431 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit