🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.48 AU - 0.76 AU

Year: 179 Days

Day: 19.1 Hours

Environment

Temp: 171 °C

Axial Tilt: 22.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.83 AU - 2.13 AU

Year: 1023 Days

Day: 26.9 Hours

Environment

Temp: -65 °C

Axial Tilt: 37.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.38

Radius: 1.14

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.95 AU - 3.05 AU

Year: 1451 Days

Day: 38.2 Hours

Environment

Temp: -86 °C

Axial Tilt: 5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 5.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.9

Radius: 9.8

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 4.83 AU - 5.55 AU

Year: 4340 Days

Day: 5.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 80,050,447 km

• M1: 122,521 km (0.119 R)
• M2: 436,377 km (0.072 R)
• M3: 2,693,809 km (0.118 R)
• M4: 5,101,736 km (0.063 R)
• M5: 6,119,450 km (0.101 R)
• M6: 6,676,703 km (0.083 R)
• M7: 7,689,779 km (0.065 R)
• M8: 9,056,206 km (0.115 R)
• M9: 14,513,985 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232

Radius: 10.4

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 5.34 AU - 6.94 AU

Year: 5585 Days

Day: 10.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 80,050,447 km

• M1: 130,599 km (0.1 R)
• M2: 481,406 km (0.106 R)
• M3: 1,120,338 km (0.055 R)
• M4: 1,496,876 km (0.1 R)
• M5: 1,996,683 km (0.067 R)
• M6: 2,747,664 km (0.101 R)
• M7: 4,709,640 km (0.066 R)
• M8: 5,044,739 km (0.097 R)
• M9: 5,472,889 km (0.105 R)
• M10: 6,754,942 km (0.105 R)
• M11: 7,339,272 km (0.081 R)
• M12: 7,758,295 km (0.055 R)
• M13: 8,893,893 km (0.112 R)
• M14: 9,825,588 km (0.064 R)
• M15: 10,862,152 km (0.117 R)
• M16: 11,621,511 km (0.104 R)
• M17: 13,058,398 km (0.087 R)
• M18: 15,068,096 km (0.111 R)
• M19: 15,799,181 km (0.08 R)
• M20: 20,187,335 km (0.069 R)
• M21: 21,204,900 km (0.099 R)
• M22: 22,591,971 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.7

Radius: 10.3

Gravity: 5.92 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 6.3 AU - 10.14 AU

Year: 8651 Days

Day: 13.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 80,050,447 km

• M1: 128,205 km (0.08 R)
• M2: 455,226 km (0.079 R)
• M3: 939,325 km (0.1 R)
• M4: 1,828,684 km (0.054 R)
• M5: 2,332,680 km (0.05 R)
• M6: 3,295,192 km (0.056 R)
• M7: 4,759,606 km (0.107 R)
• M8: 6,838,119 km (0.106 R)
• M9: 7,489,468 km (0.118 R)
• M10: 11,383,949 km (0.11 R)
• M11: 14,769,648 km (0.096 R)
• M12: 15,275,289 km (0.058 R)
• M13: 15,923,347 km (0.095 R)
• M14: 17,344,228 km (0.092 R)
• M15: 28,167,334 km (0.068 R)
• M16: 32,412,024 km (0.069 R)
• M17: 37,296,844 km (0.069 R)
• M18: 38,353,154 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 599.5

Radius: 13

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 7.39 AU - 11.73 AU

Year: 10851 Days

Day: 13.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 80,050,447 km

• M1: 161,715 km (0.025 R)
• M2: 943,065 km (0.115 R)
• M3: 1,350,719 km (0.059 R)
• M4: 1,959,583 km (0.082 R)
• M5: 2,450,712 km (0.025 R)
• M6: 2,893,821 km (0.076 R)
• M7: 3,536,194 km (0.092 R)
• M8: 4,328,315 km (0.119 R)
• M9: 5,333,014 km (0.086 R)
• M10: 9,430,949 km (0.098 R)
• M11: 10,846,893 km (0.096 R)
• M12: 13,412,945 km (0.05 R)
• M13: 17,431,742 km (0.026 R)
• M14: 20,194,217 km (0.075 R)
• M15: 23,771,850 km (0.083 R)
• M16: 25,521,098 km (0.068 R)
• M17: 28,557,336 km (0.117 R)
• M18: 30,109,563 km (0.105 R)
• M19: 33,269,070 km (0.109 R)
• M20: 34,408,109 km (0.101 R)
• M21: 37,490,872 km (0.071 R)
• M22: 42,188,844 km (0.105 R)
• M23: 44,747,565 km (0.065 R)
• M24: 45,855,188 km (0.095 R)
• M25: 46,981,062 km (0.083 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 965.8

Radius: 10.2

Gravity: 9.28 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 9.42 AU - 11.94 AU

Year: 12812 Days

Day: 11.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 80,050,447 km

• M1: 127,009 km (0.059 R)
• M2: 721,211 km (0.103 R)
• M3: 1,238,970 km (0.097 R)
• M4: 1,718,580 km (0.092 R)
• M5: 2,219,883 km (0.096 R)
• M6: 2,548,699 km (0.077 R)
• M7: 3,997,106 km (0.113 R)
• M8: 4,715,175 km (0.106 R)
• M9: 6,823,159 km (0.116 R)
• M10: 7,256,843 km (0.091 R)
• M11: 7,708,928 km (0.101 R)
• M12: 14,702,628 km (0.109 R)
• M13: 17,746,197 km (0.12 R)
• M14: 21,004,588 km (0.112 R)
• M15: 21,461,011 km (0.107 R)
• M16: 23,353,574 km (0.055 R)
• M17: 24,140,908 km (0.095 R)
• M18: 27,036,225 km (0.063 R)
• M19: 29,581,483 km (0.083 R)
• M20: 31,088,681 km (0.114 R)
• M21: 45,643,806 km (0.103 R)
• M22: 47,340,845 km (0.041 R)
• M23: 49,883,859 km (0.117 R)
• M24: 50,533,562 km (0.097 R)
• M25: 51,353,658 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 564.2

Radius: 6.5

Gravity: 13.35 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 13.29 AU - 18.97 AU

Year: 23781 Days

Day: 20.2 Hours

Environment

Temp: -185 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 80,050,447 km

• M1: 80,932 km (0.068 R)
• M2: 384,467 km (0.119 R)
• M3: 701,614 km (0.063 R)
• M4: 1,271,283 km (0.078 R)
• M5: 2,463,279 km (0.093 R)
• M6: 7,416,763 km (0.103 R)
• M7: 8,383,465 km (0.116 R)
• M8: 8,869,658 km (0.064 R)
• M9: 9,898,143 km (0.086 R)
• M10: 15,204,679 km (0.08 R)
• M11: 16,255,604 km (0.103 R)
• M12: 17,877,694 km (0.108 R)
• M13: 20,364,010 km (0.111 R)
• M14: 31,446,819 km (0.068 R)
• M15: 32,882,210 km (0.082 R)
• M16: 35,185,569 km (0.109 R)
• M17: 44,659,303 km (0.077 R)
• M18: 50,239,603 km (0.1 R)
• M19: 55,137,138 km (0.092 R)
• M20: 57,220,438 km (0.114 R)
• M21: 57,797,586 km (0.085 R)
• M22: 66,927,245 km (0.081 R)
• M23: 68,861,545 km (0.093 R)
• M24: 70,611,990 km (0.1 R)
• M25: 77,440,385 km (0.086 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 183 - 11,504 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit