🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.41 AU - 0.61 AU

Year: 232 Days

Day: 29.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 44.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,519,336 km

• M1: 34,408 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.2

Radius: 10.7

Gravity: 6.53 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.68 AU - 0.88 AU

Year: 438 Days

Day: 6.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 74,519,336 km

• M1: 133,142 km (0.116 R)
• M2: 755,768 km (0.05 R)
• M3: 1,297,313 km (0.093 R)
• M4: 1,994,140 km (0.105 R)
• M5: 2,485,569 km (0.082 R)
• M6: 2,860,610 km (0.065 R)
• M7: 3,215,606 km (0.07 R)
• M8: 3,803,526 km (0.092 R)
• M9: 4,682,862 km (0.056 R)
• M10: 5,035,764 km (0.056 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.1

Radius: 9.4

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.61 AU - 0.99 AU

Year: 455 Days

Day: 5.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 74,519,336 km

• M1: 118,781 km (0.105 R)
• M2: 431,739 km (0.108 R)
• M3: 769,831 km (0.092 R)
• M4: 1,198,728 km (0.101 R)
• M5: 1,502,711 km (0.118 R)
• M6: 1,851,274 km (0.117 R)
• M7: 2,175,751 km (0.112 R)
• M8: 2,836,525 km (0.099 R)
• M9: 3,147,090 km (0.091 R)
• M10: 3,875,931 km (0.107 R)
• M11: 4,219,109 km (0.057 R)
• M12: 4,568,121 km (0.075 R)
• M13: 4,906,212 km (0.095 R)
• M14: 5,404,522 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.3

Radius: 12.2

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.7 AU - 1.1 AU

Year: 543 Days

Day: 12.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 74,519,336 km

• M1: 153,787 km (0.091 R)
• M2: 1,319,453 km (0.084 R)
• M3: 1,701,526 km (0.107 R)
• M4: 2,091,378 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 785.8

Radius: 10.7

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.03 AU - 1.53 AU

Year: 921 Days

Day: 9.9 Hours

Environment

Temp: -173 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 74,519,336 km

• M1: 133,142 km (0.081 R)
• M2: 467,045 km (0.061 R)
• M3: 834,158 km (0.054 R)
• M4: 1,306,588 km (0.082 R)
• M5: 1,740,870 km (0.08 R)
• M6: 2,144,485 km (0.1 R)
• M7: 2,563,210 km (0.117 R)
• M8: 2,970,864 km (0.105 R)
• M9: 3,997,255 km (0.086 R)
• M10: 4,479,110 km (0.104 R)
• M11: 5,303,394 km (0.048 R)
• M12: 6,139,796 km (0.085 R)
• M13: 6,737,140 km (0.115 R)
• M14: 7,252,206 km (0.088 R)
• M15: 7,742,887 km (0.032 R)
• M16: 8,655,284 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.2

Radius: 12.8

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.52 AU - 1.96 AU

Year: 1459 Days

Day: 6.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,519,336 km

• M1: 159,172 km (0.096 R)
• M2: 563,535 km (0.116 R)
• M3: 1,338,153 km (0.099 R)
• M4: 1,868,477 km (0.063 R)
• M5: 2,314,279 km (0.055 R)
• M6: 3,394,076 km (0.092 R)
• M7: 5,175,488 km (0.103 R)
• M8: 8,391,244 km (0.039 R)
• M9: 8,839,589 km (0.078 R)
• M10: 10,761,173 km (0.094 R)
• M11: 12,099,925 km (0.048 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.2

Radius: 11.9

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 3.34 AU - 4.36 AU

Year: 4803 Days

Day: 8.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 74,519,336 km

• M1: 148,102 km (0.115 R)
• M2: 544,536 km (0.061 R)
• M3: 1,729,950 km (0.103 R)
• M4: 2,425,879 km (0.118 R)
• M5: 2,945,732 km (0.05 R)
• M6: 4,941,367 km (0.117 R)
• M7: 5,753,684 km (0.093 R)
• M8: 6,875,817 km (0.073 R)
• M9: 10,853,475 km (0.092 R)
• M10: 11,894,676 km (0.039 R)
• M11: 13,966,158 km (0.059 R)
• M12: 14,386,378 km (0.054 R)
• M13: 15,087,394 km (0.105 R)
• M14: 17,691,145 km (0.032 R)
• M15: 21,750,334 km (0.094 R)
• M16: 23,771,999 km (0.099 R)
• M17: 25,213,375 km (0.045 R)
• M18: 26,471,642 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 550

Radius: 7.1

Gravity: 10.91 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 9.33 AU - 11.67 AU

Year: 21633 Days

Day: 24 Hours

Environment

Temp: -236 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 74,519,336 km

• M1: 88,263 km (0.066 R)
• M2: 508,034 km (0.097 R)
• M3: 1,156,242 km (0.039 R)
• M4: 1,619,397 km (0.088 R)
• M5: 5,408,113 km (0.071 R)
• M6: 5,642,233 km (0.092 R)
• M7: 8,065,270 km (0.067 R)
• M8: 8,898,829 km (0.12 R)
• M9: 10,195,843 km (0.061 R)
• M10: 11,169,426 km (0.11 R)
• M11: 20,528,867 km (0.12 R)
• M12: 22,075,859 km (0.089 R)
• M13: 25,727,692 km (0.085 R)
• M14: 26,058,303 km (0.116 R)
• M15: 28,805,968 km (0.106 R)
• M16: 32,761,784 km (0.048 R)
• M17: 33,020,439 km (0.104 R)
• M18: 34,334,058 km (0.061 R)
• M19: 35,138,745 km (0.117 R)
• M20: 41,882,467 km (0.11 R)
• M21: 45,476,406 km (0.074 R)
• M22: 46,283,936 km (0.103 R)
• M23: 53,092,284 km (0.116 R)
• M24: 70,787,468 km (0.103 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: 238 - 13,575 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit