🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.54 AU - 0.56 AU

Year: 268 Days

Day: 16.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 88,539,200 km

• M1: 72,854 km (0.106 R)
• M2: 109,954 km (0.041 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.6

Radius: 9.5

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.67 AU - 1.07 AU

Year: 532 Days

Day: 5.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 88,539,200 km

• M1: 118,182 km (0.05 R)
• M2: 640,279 km (0.069 R)
• M3: 953,088 km (0.043 R)
• M4: 1,259,913 km (0.062 R)
• M5: 1,588,879 km (0.039 R)
• M6: 1,916,498 km (0.081 R)
• M7: 2,450,563 km (0.093 R)
• M8: 2,786,410 km (0.034 R)
• M9: 4,069,212 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.4

Radius: 14.3

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.96 AU - 2.6 AU

Year: 2258 Days

Day: 11.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 107.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 88,539,200 km

• M1: 177,872 km (0.101 R)
• M2: 630,854 km (0.105 R)
• M3: 1,263,504 km (0.054 R)
• M4: 1,910,066 km (0.104 R)
• M5: 2,522,968 km (0.106 R)
• M6: 3,095,030 km (0.08 R)
• M7: 3,658,266 km (0.072 R)
• M8: 4,669,249 km (0.049 R)
• M9: 5,251,035 km (0.052 R)
• M10: 6,467,415 km (0.027 R)
• M11: 7,267,913 km (0.107 R)
• M12: 8,493,120 km (0.116 R)
• M13: 9,333,710 km (0.066 R)
• M14: 9,976,532 km (0.111 R)
• M15: 11,079,817 km (0.093 R)
• M16: 11,696,160 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.7

Radius: 13.7

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 2.89 AU - 2.99 AU

Year: 3307 Days

Day: 5.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 88,539,200 km

• M1: 170,392 km (0.094 R)
• M2: 611,556 km (0.112 R)
• M3: 1,595,760 km (0.096 R)
• M4: 2,057,420 km (0.083 R)
• M5: 2,579,516 km (0.047 R)
• M6: 4,016,404 km (0.113 R)
• M7: 4,749,134 km (0.077 R)
• M8: 5,443,268 km (0.11 R)
• M9: 5,907,470 km (0.048 R)
• M10: 8,435,974 km (0.054 R)
• M11: 9,059,946 km (0.056 R)
• M12: 9,603,286 km (0.031 R)
• M13: 10,168,466 km (0.095 R)
• M14: 10,835,523 km (0.056 R)
• M15: 13,242,104 km (0.091 R)
• M16: 15,419,352 km (0.088 R)
• M17: 17,270,625 km (0.112 R)
• M18: 20,166,541 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.7

Radius: 9.5

Gravity: 6.38 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 3.42 AU - 5.58 AU

Year: 6262 Days

Day: 7.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 88,539,200 km

• M1: 118,182 km (0.097 R)
• M2: 627,413 km (0.06 R)
• M3: 931,097 km (0.041 R)
• M4: 1,282,353 km (0.092 R)
• M5: 2,075,222 km (0.087 R)
• M6: 2,391,920 km (0.082 R)
• M7: 3,084,558 km (0.09 R)
• M8: 3,413,973 km (0.12 R)
• M9: 4,341,779 km (0.078 R)
• M10: 5,850,174 km (0.102 R)
• M11: 6,455,747 km (0.032 R)
• M12: 7,423,944 km (0.116 R)
• M13: 8,807,275 km (0.04 R)
• M14: 9,732,987 km (0.117 R)
• M15: 10,309,687 km (0.116 R)
• M16: 10,956,099 km (0.096 R)
• M17: 16,446,042 km (0.082 R)
• M18: 18,643,335 km (0.103 R)
• M19: 20,378,970 km (0.096 R)
• M20: 30,228,494 km (0.081 R)
• M21: 31,169,464 km (0.081 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 564.5

Radius: 8

Gravity: 8.82 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 4.88 AU - 7.78 AU

Year: 10448 Days

Day: 21.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 88,539,200 km

• M1: 99,632 km (0.028 R)
• M2: 441,912 km (0.086 R)
• M3: 691,142 km (0.085 R)
• M4: 1,213,987 km (0.028 R)
• M5: 1,528,890 km (0.045 R)
• M6: 3,304,916 km (0.114 R)
• M7: 3,719,452 km (0.097 R)
• M8: 4,862,529 km (0.118 R)
• M9: 5,498,171 km (0.094 R)
• M10: 6,332,777 km (0.112 R)
• M11: 7,169,628 km (0.101 R)
• M12: 7,739,296 km (0.103 R)
• M13: 8,251,370 km (0.105 R)
• M14: 9,248,440 km (0.111 R)
• M15: 11,644,399 km (0.059 R)
• M16: 13,800,254 km (0.103 R)
• M17: 15,135,415 km (0.028 R)
• M18: 15,399,306 km (0.067 R)
• M19: 16,834,847 km (0.032 R)
• M20: 17,476,622 km (0.073 R)
• M21: 21,177,972 km (0.067 R)
• M22: 24,910,140 km (0.107 R)
• M23: 25,278,151 km (0.116 R)
• M24: 26,119,489 km (0.104 R)
• M25: 27,857,816 km (0.04 R)
• M26: 34,322,090 km (0.1 R)
• M27: 37,597,834 km (0.107 R)
• M28: 40,820,771 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 82.3

Radius: 5.7

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 5.33 AU - 7.57 AU

Year: 10746 Days

Day: 19.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 88,539,200 km

• M1: 70,909 km (0.075 R)
• M2: 309,967 km (0.119 R)
• M3: 505,790 km (0.084 R)
• M4: 786,885 km (0.084 R)
• M5: 1,538,614 km (0.081 R)
• M6: 7,680,654 km (0.119 R)
• M7: 9,935,842 km (0.104 R)
• M8: 10,426,224 km (0.074 R)
• M9: 11,994,458 km (0.113 R)
• M10: 18,963,774 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 394.4

Radius: 6.1

Gravity: 10.6 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 9.6 AU - 10.02 AU

Year: 20156 Days

Day: 23 Hours

Environment

Temp: -239 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 88,539,200 km

• M1: 76,295 km (0.111 R)
• M2: 361,279 km (0.119 R)
• M3: 2,024,658 km (0.12 R)
• M4: 2,508,158 km (0.059 R)
• M5: 3,140,957 km (0.067 R)
• M6: 3,590,798 km (0.117 R)
• M7: 5,128,813 km (0.099 R)
• M8: 5,452,842 km (0.098 R)
• M9: 8,067,813 km (0.07 R)
• M10: 8,555,951 km (0.099 R)
• M11: 9,484,056 km (0.073 R)
• M12: 10,083,196 km (0.088 R)
• M13: 11,058,424 km (0.112 R)
• M14: 13,261,552 km (0.1 R)
• M15: 13,530,679 km (0.082 R)
• M16: 17,772,077 km (0.054 R)
• M17: 18,765,706 km (0.101 R)
• M18: 19,276,134 km (0.072 R)
• M19: 19,971,017 km (0.084 R)
• M20: 21,503,198 km (0.105 R)
• M21: 22,345,135 km (0.077 R)
• M22: 22,726,310 km (0.109 R)
• M23: 23,896,016 km (0.058 R)
• M24: 24,395,074 km (0.12 R)
• M25: 28,084,607 km (0.095 R)
• M26: 29,544,682 km (0.105 R)
• M27: 31,054,573 km (0.102 R)
• M28: 40,358,663 km (0.068 R)
• M29: 41,494,560 km (0.1 R)
• M30: 42,944,313 km (0.064 R)
• M31: 46,406,307 km (0.085 R)
• M32: 46,871,257 km (0.108 R)
• M33: 49,081,715 km (0.057 R)
• M34: 49,564,168 km (0.086 R)
• M35: 53,199,995 km (0.043 R)
• M36: 57,009,654 km (0.072 R)
• M37: 57,900,210 km (0.041 R)
• M38: 59,526,489 km (0.08 R)
• M39: 62,869,702 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 950.9

Radius: 3.2

Gravity: 92.86 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.23 AU - 12.13 AU

Year: 21307 Days

Day: 18.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 88,539,200 km

• M1: 49,517 km (0.1 R)
• M2: 363,074 km (0.098 R)
• M3: 555,906 km (0.111 R)
• M4: 747,840 km (0.031 R)
• M5: 969,394 km (0.071 R)
• M6: 1,820,756 km (0.108 R)
• M7: 2,003,415 km (0.102 R)
• M8: 2,858,965 km (0.069 R)
• M9: 5,129,561 km (0.117 R)
• M10: 5,746,353 km (0.091 R)
• M11: 6,365,090 km (0.109 R)
• M12: 6,549,844 km (0.087 R)
• M13: 7,425,440 km (0.063 R)
• M14: 7,681,851 km (0.116 R)
• M15: 7,891,138 km (0.119 R)
• M16: 10,838,815 km (0.086 R)
• M17: 15,087,544 km (0.03 R)
• M18: 15,333,333 km (0.12 R)
• M19: 16,171,829 km (0.077 R)
• M20: 19,251,451 km (0.096 R)
• M21: 20,425,345 km (0.12 R)
• M22: 20,726,037 km (0.111 R)
• M23: 22,274,375 km (0.075 R)
• M24: 22,380,290 km (0.077 R)
• M25: 27,136,755 km (0.093 R)
• M26: 28,360,764 km (0.112 R)
• M27: 30,525,446 km (0.111 R)
• M28: 31,983,127 km (0.057 R)
• M29: 33,625,562 km (0.114 R)
• M30: 33,904,712 km (0.115 R)
• M31: 34,609,318 km (0.12 R)
• M32: 35,756,733 km (0.052 R)
• M33: 37,675,027 km (0.056 R)
• M34: 43,342,841 km (0.035 R)
• M35: 45,521,585 km (0.039 R)
• M36: 49,733,663 km (0.069 R)
• M37: 50,642,619 km (0.088 R)
• M38: 55,354,204 km (0.104 R)
• M39: 58,116,230 km (0.057 R)
• M40: 60,144,328 km (0.105 R)
• M41: 63,912,848 km (0.106 R)
• M42: 67,835,753 km (0.096 R)
• M43: 69,856,072 km (0.067 R)
• M44: 74,725,184 km (0.114 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: 324 - 15,245 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit