🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.64

Radius: 0.84

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.59 AU - 0.73 AU

Year: 352 Days

Day: 19.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 34 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 981.6

Radius: 8.3

Gravity: 14.25 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.65 AU - 1.01 AU

Year: 496 Days

Day: 7.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 77,780,647 km

• M1: 103,223 km (0.096 R)
• M2: 513,719 km (0.112 R)
• M3: 898,634 km (0.047 R)
• M4: 1,359,545 km (0.095 R)
• M5: 2,334,924 km (0.051 R)
• M6: 2,787,756 km (0.115 R)
• M7: 3,149,634 km (0.1 R)
• M8: 3,425,342 km (0.06 R)
• M9: 3,855,287 km (0.115 R)
• M10: 4,171,387 km (0.087 R)
• M11: 4,806,879 km (0.096 R)
• M12: 5,559,057 km (0.043 R)
• M13: 5,851,222 km (0.083 R)
• M14: 6,956,002 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.1

Radius: 14

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.79 AU - 1.07 AU

Year: 588 Days

Day: 13.9 Hours

Environment

Temp: -163 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 77,780,647 km

• M1: 174,132 km (0.117 R)
• M2: 609,462 km (0.086 R)
• M3: 1,048,531 km (0.072 R)
• M4: 1,524,851 km (0.079 R)
• M5: 2,039,019 km (0.041 R)
• M6: 2,764,120 km (0.119 R)
• M7: 3,273,949 km (0.054 R)
• M8: 3,870,995 km (0.053 R)
• M9: 4,553,610 km (0.092 R)
• M10: 5,018,560 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.2

Radius: 13.7

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.72 AU - 2.36 AU

Year: 1911 Days

Day: 11.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 77,780,647 km

• M1: 170,392 km (0.09 R)
• M2: 633,547 km (0.028 R)
• M3: 1,152,652 km (0.109 R)
• M4: 1,581,848 km (0.052 R)
• M5: 2,085,843 km (0.113 R)
• M6: 3,031,750 km (0.099 R)
• M7: 3,663,801 km (0.118 R)
• M8: 4,246,934 km (0.094 R)
• M9: 6,053,927 km (0.092 R)
• M10: 7,115,772 km (0.093 R)
• M11: 7,998,400 km (0.118 R)
• M12: 8,451,083 km (0.112 R)
• M13: 9,474,332 km (0.105 R)
• M14: 10,940,840 km (0.117 R)
• M15: 13,799,805 km (0.096 R)
• M16: 14,408,669 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.2

Radius: 8.7

Gravity: 6.44 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 2.45 AU - 3.09 AU

Year: 3024 Days

Day: 8.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,780,647 km

• M1: 108,458 km (0.098 R)
• M2: 489,783 km (0.099 R)
• M3: 1,119,142 km (0.078 R)
• M4: 3,584,066 km (0.054 R)
• M5: 8,589,760 km (0.106 R)
• M6: 11,308,552 km (0.07 R)
• M7: 11,674,169 km (0.059 R)
• M8: 12,515,059 km (0.109 R)
• M9: 14,938,245 km (0.116 R)
• M10: 16,543,729 km (0.114 R)
• M11: 17,657,934 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 375.5

Radius: 9.4

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 2.61 AU - 4.05 AU

Year: 3986 Days

Day: 14.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 77,780,647 km

• M1: 116,836 km (0.105 R)
• M2: 999,763 km (0.1 R)
• M3: 1,991,596 km (0.042 R)
• M4: 2,870,783 km (0.05 R)
• M5: 3,907,945 km (0.075 R)
• M6: 4,390,997 km (0.104 R)
• M7: 5,056,258 km (0.028 R)
• M8: 7,088,994 km (0.086 R)
• M9: 7,680,055 km (0.077 R)
• M10: 11,939,406 km (0.053 R)
• M11: 12,331,053 km (0.086 R)
• M12: 13,417,433 km (0.045 R)
• M13: 15,114,471 km (0.032 R)
• M14: 19,402,993 km (0.081 R)
• M15: 19,702,788 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 569.8

Radius: 7.9

Gravity: 9.13 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 8.05 AU - 8.33 AU

Year: 15376 Days

Day: 23.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,780,647 km

• M1: 98,884 km (0.118 R)
• M2: 1,884,335 km (0.047 R)
• M3: 2,735,397 km (0.097 R)
• M4: 5,170,701 km (0.092 R)
• M5: 5,745,755 km (0.051 R)
• M6: 6,564,355 km (0.073 R)
• M7: 8,724,398 km (0.04 R)
• M8: 9,279,107 km (0.047 R)
• M9: 10,854,522 km (0.1 R)
• M10: 12,224,839 km (0.049 R)
• M11: 15,377,165 km (0.094 R)
• M12: 19,623,201 km (0.095 R)
• M13: 19,879,612 km (0.11 R)
• M14: 22,105,329 km (0.064 R)
• M15: 24,590,898 km (0.091 R)
• M16: 26,209,697 km (0.074 R)
• M17: 28,659,362 km (0.112 R)
• M18: 35,506,905 km (0.12 R)
• M19: 38,767,391 km (0.096 R)
• M20: 54,817,297 km (0.115 R)
• M21: 55,838,901 km (0.111 R)
• M22: 57,569,898 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 243.5

Radius: 6.9

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 6.74 AU - 11.08 AU

Year: 17447 Days

Day: 22.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 77,780,647 km

• M1: 85,869 km (0.105 R)
• M2: 335,847 km (0.097 R)
• M3: 773,421 km (0.059 R)
• M4: 1,164,171 km (0.104 R)
• M5: 1,695,542 km (0.104 R)
• M6: 2,068,191 km (0.067 R)
• M7: 2,302,162 km (0.113 R)
• M8: 2,738,987 km (0.113 R)
• M9: 3,349,197 km (0.09 R)
• M10: 4,327,717 km (0.097 R)
• M11: 5,690,105 km (0.072 R)
• M12: 6,189,612 km (0.117 R)
• M13: 8,574,950 km (0.106 R)
• M14: 10,381,494 km (0.086 R)
• M15: 10,696,697 km (0.102 R)
• M16: 11,737,000 km (0.099 R)
• M17: 12,843,127 km (0.113 R)
• M18: 14,273,133 km (0.115 R)
• M19: 16,083,566 km (0.084 R)
• M20: 16,719,656 km (0.063 R)
• M21: 18,193,046 km (0.103 R)
• M22: 18,805,948 km (0.065 R)
• M23: 19,353,477 km (0.108 R)
• M24: 22,251,486 km (0.083 R)
• M25: 24,122,507 km (0.118 R)
• M26: 28,377,968 km (0.12 R)
• M27: 32,545,914 km (0.05 R)
• M28: 36,618,417 km (0.082 R)
• M29: 38,713,685 km (0.045 R)
• M30: 38,965,309 km (0.092 R)
• M31: 40,368,985 km (0.106 R)
• M32: 44,505,516 km (0.072 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 990.6

Radius: 5.4

Gravity: 33.97 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 7.82 AU - 10.56 AU

Year: 18276 Days

Day: 22.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,780,647 km

• M1: 69,563 km (0.033 R)
• M2: 329,564 km (0.11 R)
• M3: 964,906 km (0.118 R)
• M4: 1,144,873 km (0.103 R)
• M5: 1,714,392 km (0.115 R)
• M6: 2,021,366 km (0.094 R)
• M7: 3,277,390 km (0.106 R)
• M8: 3,719,901 km (0.105 R)
• M9: 4,869,560 km (0.115 R)
• M10: 6,065,296 km (0.094 R)
• M11: 7,105,600 km (0.097 R)
• M12: 11,385,146 km (0.066 R)
• M13: 11,648,737 km (0.085 R)
• M14: 15,619,364 km (0.115 R)
• M15: 19,455,502 km (0.082 R)
• M16: 20,214,412 km (0.098 R)
• M17: 27,128,078 km (0.084 R)
• M18: 30,284,892 km (0.068 R)
• M19: 34,909,262 km (0.06 R)
• M20: 35,326,340 km (0.089 R)
• M21: 39,831,630 km (0.045 R)
• M22: 45,361,665 km (0.063 R)
• M23: 51,024,543 km (0.042 R)
• M24: 64,142,331 km (0.11 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 516.6

Radius: 4.5

Gravity: 25.51 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 10.96 AU - 10.96 AU

Year: 23803 Days

Day: 21.4 Hours

Environment

Temp: -234 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 77,780,647 km

• M1: 55,950 km (0.091 R)
• M2: 283,189 km (0.101 R)
• M3: 659,278 km (0.112 R)
• M4: 1,227,151 km (0.074 R)
• M5: 1,762,113 km (0.081 R)
• M6: 3,652,133 km (0.118 R)
• M7: 5,181,023 km (0.06 R)
• M8: 5,651,508 km (0.105 R)
• M9: 6,722,180 km (0.105 R)
• M10: 6,997,889 km (0.063 R)
• M11: 7,425,739 km (0.041 R)
• M12: 8,074,246 km (0.105 R)
• M13: 9,540,305 km (0.079 R)
• M14: 14,374,411 km (0.083 R)
• M15: 15,616,522 km (0.085 R)
• M16: 17,438,923 km (0.111 R)
• M17: 17,784,943 km (0.103 R)
• M18: 21,897,538 km (0.081 R)
• M19: 24,495,155 km (0.099 R)
• M20: 26,148,361 km (0.102 R)
• M21: 47,957,337 km (0.118 R)
• M22: 50,012,363 km (0.088 R)
• M23: 50,186,196 km (0.113 R)
• M24: 55,965,162 km (0.117 R)
• M25: 59,402,771 km (0.102 R)
• M26: 64,201,721 km (0.104 R)
• M27: 64,819,112 km (0.11 R)
• M28: 70,555,293 km (0.112 R)
• M29: 77,083,295 km (0.087 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 191 - 15,120 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit