🌌 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: 1.92

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.52 AU - 0.54 AU

Year: 249 Days

Day: 41.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 16.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 634.3

Radius: 12.3

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.76 AU - 1.2 AU

Year: 626 Days

Day: 10.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 65,371,580 km

• M1: 153,039 km (0.071 R)
• M2: 687,552 km (0.108 R)
• M3: 1,167,611 km (0.099 R)
• M4: 1,766,751 km (0.093 R)
• M5: 2,236,937 km (0.101 R)
• M6: 2,692,163 km (0.069 R)
• M7: 3,737,852 km (0.079 R)
• M8: 4,537,752 km (0.111 R)
• M9: 5,790,335 km (0.119 R)
• M10: 6,320,211 km (0.115 R)
• M11: 6,861,755 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.5

Radius: 11.7

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.39 AU - 2.15 AU

Year: 1520 Days

Day: 11.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 65,371,580 km

• M1: 148,999 km (0.064 R)
• M2: 527,482 km (0.116 R)
• M3: 1,226,254 km (0.072 R)
• M4: 1,698,085 km (0.072 R)
• M5: 2,168,720 km (0.116 R)
• M6: 2,534,637 km (0.07 R)
• M7: 3,123,454 km (0.12 R)
• M8: 3,509,267 km (0.078 R)
• M9: 3,909,142 km (0.063 R)
• M10: 4,320,087 km (0.049 R)
• M11: 5,098,295 km (0.082 R)
• M12: 5,871,866 km (0.099 R)
• M13: 6,362,397 km (0.09 R)
• M14: 7,370,238 km (0.108 R)
• M15: 7,825,165 km (0.107 R)
• M16: 9,600,743 km (0.105 R)
• M17: 11,292,545 km (0.073 R)
• M18: 11,744,929 km (0.098 R)
• M19: 12,131,191 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201

Radius: 12.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 2.57 AU - 4.21 AU

Year: 4030 Days

Day: 9.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,371,580 km

• M1: 156,629 km (0.115 R)
• M2: 645,365 km (0.082 R)
• M3: 1,202,019 km (0.117 R)
• M4: 1,684,622 km (0.09 R)
• M5: 2,691,714 km (0.059 R)
• M6: 3,229,968 km (0.085 R)
• M7: 4,504,093 km (0.038 R)
• M8: 4,929,998 km (0.049 R)
• M9: 5,913,155 km (0.045 R)
• M10: 6,692,410 km (0.068 R)
• M11: 10,327,639 km (0.078 R)
• M12: 11,302,867 km (0.092 R)
• M13: 11,733,559 km (0.05 R)
• M14: 13,479,815 km (0.089 R)
• M15: 14,736,437 km (0.079 R)
• M16: 15,203,781 km (0.096 R)
• M17: 16,316,191 km (0.036 R)
• M18: 17,326,874 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 751.9

Radius: 8.4

Gravity: 10.66 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.56 AU - 4.36 AU

Year: 5088 Days

Day: 8.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 65,371,580 km

• M1: 104,569 km (0.097 R)
• M2: 383,120 km (0.116 R)
• M3: 793,916 km (0.09 R)
• M4: 1,058,405 km (0.076 R)
• M5: 2,269,250 km (0.117 R)
• M6: 2,636,662 km (0.063 R)
• M7: 2,966,675 km (0.056 R)
• M8: 3,386,297 km (0.088 R)
• M9: 4,007,129 km (0.089 R)
• M10: 4,320,087 km (0.08 R)
• M11: 4,780,550 km (0.114 R)
• M12: 5,133,152 km (0.093 R)
• M13: 5,473,936 km (0.044 R)
• M14: 6,232,696 km (0.059 R)
• M15: 6,720,535 km (0.049 R)
• M16: 7,129,087 km (0.039 R)
• M17: 7,626,350 km (0.097 R)
• M18: 8,261,243 km (0.094 R)
• M19: 9,424,815 km (0.06 R)
• M20: 10,333,174 km (0.049 R)
• M21: 10,923,936 km (0.067 R)
• M22: 14,111,118 km (0.109 R)
• M23: 14,838,314 km (0.111 R)
• M24: 16,489,276 km (0.112 R)
• M25: 20,716,164 km (0.115 R)
• M26: 22,773,433 km (0.076 R)
• M27: 23,695,405 km (0.115 R)
• M28: 26,359,145 km (0.106 R)
• M29: 26,694,992 km (0.106 R)
• M30: 27,289,644 km (0.053 R)
• M31: 28,417,312 km (0.062 R)
• M32: 30,212,636 km (0.078 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 653.8

Radius: 8.6

Gravity: 8.84 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 3.51 AU - 4.71 AU

Year: 5380 Days

Day: 8.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,371,580 km

• M1: 106,962 km (0.115 R)
• M2: 399,277 km (0.025 R)
• M3: 768,185 km (0.087 R)
• M4: 2,667,779 km (0.097 R)
• M5: 4,113,642 km (0.096 R)
• M6: 4,431,089 km (0.072 R)
• M7: 5,143,175 km (0.082 R)
• M8: 8,300,737 km (0.073 R)
• M9: 8,690,290 km (0.095 R)
• M10: 9,380,385 km (0.107 R)
• M11: 10,461,080 km (0.105 R)
• M12: 11,194,857 km (0.103 R)
• M13: 14,588,635 km (0.099 R)
• M14: 15,504,174 km (0.047 R)
• M15: 17,449,544 km (0.097 R)
• M16: 23,320,214 km (0.093 R)
• M17: 25,618,785 km (0.098 R)
• M18: 29,209,433 km (0.042 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.2

Radius: 11.6

Gravity: 6.81 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 5.04 AU - 5.66 AU

Year: 7990 Days

Day: 14.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 65,371,580 km

• M1: 148,102 km (0.071 R)
• M2: 601,084 km (0.108 R)
• M3: 1,319,902 km (0.07 R)
• M4: 2,172,311 km (0.089 R)
• M5: 2,573,083 km (0.077 R)
• M6: 3,698,209 km (0.089 R)
• M7: 5,709,104 km (0.09 R)
• M8: 6,703,630 km (0.107 R)
• M9: 7,282,125 km (0.116 R)
• M10: 11,211,164 km (0.096 R)
• M11: 13,058,249 km (0.115 R)
• M12: 13,595,454 km (0.099 R)
• M13: 14,523,560 km (0.107 R)
• M14: 15,692,368 km (0.097 R)
• M15: 16,922,960 km (0.079 R)
• M16: 22,663,778 km (0.095 R)
• M17: 23,967,673 km (0.041 R)
• M18: 25,137,678 km (0.1 R)
• M19: 26,157,038 km (0.087 R)
• M20: 33,410,440 km (0.098 R)
• M21: 34,191,042 km (0.104 R)
• M22: 34,642,529 km (0.047 R)
• M23: 35,327,088 km (0.064 R)
• M24: 40,374,670 km (0.103 R)
• M25: 44,528,853 km (0.054 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 562.2

Radius: 6.8

Gravity: 12.16 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 9.15 AU - 10.37 AU

Year: 19687 Days

Day: 19.8 Hours

Environment

Temp: -237 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 65,371,580 km

• M1: 85,121 km (0.037 R)
• M2: 395,088 km (0.08 R)
• M3: 639,381 km (0.095 R)
• M4: 1,697,487 km (0.115 R)
• M5: 2,638,009 km (0.107 R)
• M6: 3,369,692 km (0.105 R)
• M7: 3,857,381 km (0.113 R)
• M8: 5,604,983 km (0.042 R)
• M9: 6,373,318 km (0.068 R)
• M10: 7,630,688 km (0.096 R)
• M11: 7,969,228 km (0.089 R)
• M12: 10,331,528 km (0.09 R)
• M13: 14,108,725 km (0.117 R)
• M14: 15,987,973 km (0.052 R)
• M15: 17,523,446 km (0.084 R)
• M16: 20,604,713 km (0.074 R)
• M17: 25,606,069 km (0.074 R)
• M18: 30,146,963 km (0.07 R)
• M19: 36,952,170 km (0.077 R)
• M20: 49,388,091 km (0.112 R)
• M21: 51,756,974 km (0.096 R)
• M22: 54,555,800 km (0.084 R)
• M23: 55,992,239 km (0.11 R)
• M24: 59,504,797 km (0.117 R)
• M25: 63,752,180 km (0.064 R)
• M26: 64,744,911 km (0.057 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 444.2

Radius: 5

Gravity: 17.77 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 9.38 AU - 10.2 AU

Year: 19778 Days

Day: 16.1 Hours

Environment

Temp: -233 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 65,371,580 km

• M1: 63,878 km (0.082 R)
• M2: 241,451 km (0.078 R)
• M3: 517,309 km (0.11 R)
• M4: 1,196,933 km (0.118 R)
• M5: 1,361,939 km (0.115 R)
• M6: 1,933,403 km (0.066 R)
• M7: 2,304,106 km (0.08 R)
• M8: 3,058,828 km (0.114 R)
• M9: 3,702,697 km (0.109 R)
• M10: 4,530,572 km (0.115 R)
• M11: 5,438,032 km (0.086 R)
• M12: 5,701,773 km (0.09 R)
• M13: 6,671,167 km (0.106 R)
• M14: 7,698,755 km (0.102 R)
• M15: 8,776,608 km (0.056 R)
• M16: 9,675,541 km (0.106 R)
• M17: 11,047,055 km (0.118 R)
• M18: 18,330,975 km (0.073 R)
• M19: 18,753,140 km (0.106 R)
• M20: 19,268,355 km (0.086 R)
• M21: 21,797,906 km (0.116 R)
• M22: 26,420,031 km (0.041 R)
• M23: 28,393,227 km (0.089 R)
• M24: 32,140,205 km (0.117 R)
• M25: 32,630,437 km (0.119 R)
• M26: 35,416,997 km (0.087 R)
• M27: 35,808,794 km (0.11 R)
• M28: 38,633,201 km (0.097 R)
• M29: 39,606,784 km (0.054 R)
• M30: 43,068,629 km (0.116 R)
• M31: 44,568,646 km (0.069 R)
• M32: 58,024,526 km (0.08 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 471 - 19,474 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit