🌌 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: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.47 AU - 0.59 AU

Year: 249 Days

Day: 40.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 4.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.41

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.5 AU - 0.6 AU

Year: 263 Days

Day: 35.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 71,488,594 km

• M1: 34,408 km (0.091 R)
• M2: 54,902 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.3

Radius: 13.1

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.59 AU - 0.87 AU

Year: 403 Days

Day: 5.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,488,594 km

• M1: 162,912 km (0.091 R)
• M2: 815,907 km (0.049 R)
• M3: 1,281,306 km (0.084 R)
• M4: 1,703,920 km (0.076 R)
• M5: 2,437,548 km (0.112 R)
• M6: 3,533,352 km (0.116 R)
• M7: 4,095,990 km (0.036 R)
• M8: 4,861,482 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.4

Radius: 12.5

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.69 AU - 2.27 AU

Year: 1799 Days

Day: 13.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,488,594 km

• M1: 155,582 km (0.073 R)
• M2: 611,706 km (0.106 R)
• M3: 1,162,226 km (0.11 R)
• M4: 1,601,894 km (0.042 R)
• M5: 2,163,784 km (0.097 R)
• M6: 2,783,119 km (0.104 R)
• M7: 3,476,655 km (0.105 R)
• M8: 3,985,736 km (0.098 R)
• M9: 5,413,648 km (0.111 R)
• M10: 5,978,679 km (0.103 R)
• M11: 6,955,703 km (0.071 R)
• M12: 8,085,615 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.6

Radius: 13.5

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 2.05 AU - 2.37 AU

Year: 2121 Days

Day: 5.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 71,488,594 km

• M1: 168,148 km (0.098 R)
• M2: 627,264 km (0.117 R)
• M3: 1,371,513 km (0.041 R)
• M4: 2,030,492 km (0.095 R)
• M5: 2,512,795 km (0.029 R)
• M6: 3,875,034 km (0.117 R)
• M7: 5,066,431 km (0.067 R)
• M8: 5,619,345 km (0.091 R)
• M9: 7,576,235 km (0.091 R)
• M10: 8,081,875 km (0.086 R)
• M11: 9,250,085 km (0.11 R)
• M12: 10,301,758 km (0.114 R)
• M13: 11,091,037 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 381.9

Radius: 8.4

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 4.27 AU - 6.13 AU

Year: 7656 Days

Day: 11.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 71,488,594 km

• M1: 105,018 km (0.112 R)
• M2: 413,638 km (0.079 R)
• M3: 1,479,673 km (0.054 R)
• M4: 1,785,151 km (0.045 R)
• M5: 2,242,622 km (0.03 R)
• M6: 2,508,158 km (0.07 R)
• M7: 3,287,114 km (0.106 R)
• M8: 3,882,514 km (0.074 R)
• M9: 5,004,348 km (0.082 R)
• M10: 5,550,380 km (0.1 R)
• M11: 6,231,649 km (0.071 R)
• M12: 7,574,888 km (0.097 R)
• M13: 8,101,173 km (0.079 R)
• M14: 9,142,973 km (0.079 R)
• M15: 10,498,779 km (0.106 R)
• M16: 11,058,125 km (0.064 R)
• M17: 11,735,355 km (0.071 R)
• M18: 12,388,948 km (0.077 R)
• M19: 13,333,509 km (0.07 R)
• M20: 14,955,000 km (0.11 R)
• M21: 15,603,208 km (0.076 R)
• M22: 16,025,373 km (0.088 R)
• M23: 18,317,661 km (0.089 R)
• M24: 19,334,328 km (0.07 R)
• M25: 20,892,689 km (0.065 R)
• M26: 22,380,589 km (0.045 R)
• M27: 23,384,840 km (0.069 R)
• M28: 26,407,166 km (0.095 R)
• M29: 27,615,617 km (0.118 R)
• M30: 28,411,777 km (0.084 R)
• M31: 32,525,419 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 283.9

Radius: 7.1

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 7.02 AU - 8.68 AU

Year: 14201 Days

Day: 21.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,488,594 km

• M1: 105,766 km (0.106 R)
• M2: 542,442 km (0.073 R)
• M3: 955,781 km (0.106 R)
• M4: 1,496,727 km (0.097 R)
• M5: 4,619,133 km (0.073 R)
• M6: 4,887,362 km (0.093 R)
• M7: 5,261,208 km (0.107 R)
• M8: 6,609,084 km (0.042 R)
• M9: 8,215,915 km (0.103 R)
• M10: 9,724,909 km (0.107 R)
• M11: 12,012,410 km (0.113 R)
• M12: 12,293,205 km (0.112 R)
• M13: 12,693,679 km (0.077 R)
• M14: 15,412,919 km (0.118 R)
• M15: 20,983,345 km (0.094 R)
• M16: 25,116,884 km (0.096 R)
• M17: 25,484,147 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 481.8

Radius: 7.6

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 9.33 AU - 11.51 AU

Year: 21718 Days

Day: 18.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 71,488,594 km

• M1: 94,695 km (0.08 R)
• M2: 997,668 km (0.058 R)
• M3: 1,408,165 km (0.093 R)
• M4: 1,644,978 km (0.071 R)
• M5: 2,778,631 km (0.115 R)
• M6: 4,595,497 km (0.091 R)
• M7: 6,052,580 km (0.109 R)
• M8: 6,513,940 km (0.109 R)
• M9: 7,506,821 km (0.118 R)
• M10: 8,289,966 km (0.071 R)
• M11: 10,783,763 km (0.114 R)
• M12: 11,274,144 km (0.079 R)
• M13: 11,715,458 km (0.032 R)
• M14: 12,299,638 km (0.038 R)
• M15: 14,608,681 km (0.085 R)
• M16: 15,361,906 km (0.104 R)
• M17: 15,982,887 km (0.11 R)
• M18: 18,031,480 km (0.114 R)
• M19: 25,972,584 km (0.079 R)
• M20: 29,853,901 km (0.078 R)
• M21: 34,630,411 km (0.084 R)
• M22: 37,895,833 km (0.111 R)
• M23: 38,743,156 km (0.118 R)
• M24: 43,939,438 km (0.045 R)
• M25: 48,087,188 km (0.086 R)
• M26: 54,428,941 km (0.09 R)
• M27: 66,063,317 km (0.086 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 235 - 18,064 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit