🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.34

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.59 AU - 0.71 AU

Year: 333 Days

Day: 18.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 12.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 52,921,753 km

• M1: 37,998 km (0.048 R)
• M2: 262,694 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 595.9

Radius: 8.9

Gravity: 7.52 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.73 AU - 0.87 AU

Year: 455 Days

Day: 12.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,921,753 km

• M1: 110,852 km (0.084 R)
• M2: 434,582 km (0.094 R)
• M3: 1,047,035 km (0.053 R)
• M4: 1,415,645 km (0.108 R)
• M5: 2,056,073 km (0.069 R)
• M6: 2,336,120 km (0.036 R)
• M7: 2,692,014 km (0.112 R)
• M8: 3,017,838 km (0.077 R)
• M9: 3,405,446 km (0.076 R)
• M10: 3,749,371 km (0.074 R)
• M11: 4,697,373 km (0.056 R)
• M12: 5,187,905 km (0.088 R)
• M13: 5,746,054 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.2

Radius: 9.9

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.79 AU - 0.99 AU

Year: 534 Days

Day: 11.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,921,753 km

• M1: 123,119 km (0.05 R)
• M2: 445,951 km (0.1 R)
• M3: 789,727 km (0.078 R)
• M4: 1,535,173 km (0.104 R)
• M5: 1,845,439 km (0.106 R)
• M6: 2,966,227 km (0.12 R)
• M7: 3,430,279 km (0.1 R)
• M8: 4,265,484 km (0.111 R)
• M9: 4,934,336 km (0.049 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.6

Radius: 12.7

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 1.84 AU - 1.86 AU

Year: 1600 Days

Day: 9 Hours

Environment

Temp: -180 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,921,753 km

• M1: 187,745 km (0.116 R)
• M2: 751,430 km (0.102 R)
• M3: 1,154,746 km (0.077 R)
• M4: 1,570,478 km (0.043 R)
• M5: 2,246,661 km (0.094 R)
• M6: 2,868,390 km (0.114 R)
• M7: 6,119,600 km (0.093 R)
• M8: 7,259,536 km (0.074 R)
• M9: 7,742,288 km (0.103 R)
• M10: 8,275,156 km (0.115 R)
• M11: 10,486,661 km (0.089 R)
• M12: 12,834,301 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.9

Radius: 12.2

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.91 AU - 2.17 AU

Year: 1853 Days

Day: 10.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,921,753 km

• M1: 152,590 km (0.106 R)
• M2: 825,631 km (0.054 R)
• M3: 1,481,767 km (0.087 R)
• M4: 1,957,039 km (0.096 R)
• M5: 2,863,602 km (0.073 R)
• M6: 3,337,528 km (0.087 R)
• M7: 3,735,908 km (0.098 R)
• M8: 4,907,109 km (0.11 R)
• M9: 5,471,841 km (0.069 R)
• M10: 6,334,871 km (0.057 R)
• M11: 7,872,139 km (0.12 R)
• M12: 8,488,632 km (0.037 R)
• M13: 8,939,221 km (0.101 R)
• M14: 10,351,425 km (0.111 R)
• M15: 10,941,139 km (0.083 R)
• M16: 12,107,255 km (0.092 R)
• M17: 12,803,932 km (0.032 R)
• M18: 13,832,866 km (0.099 R)
• M19: 14,548,842 km (0.087 R)
• M20: 15,008,706 km (0.119 R)
• M21: 16,299,286 km (0.036 R)
• M22: 16,745,537 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384.5

Radius: 14.9

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 3.85 AU - 4.19 AU

Year: 5125 Days

Day: 10.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,921,753 km

• M1: 185,352 km (0.106 R)
• M2: 898,485 km (0.085 R)
• M3: 1,437,935 km (0.113 R)
• M4: 2,021,067 km (0.106 R)
• M5: 2,537,479 km (0.059 R)
• M6: 3,160,704 km (0.087 R)
• M7: 5,347,675 km (0.095 R)
• M8: 5,946,964 km (0.093 R)
• M9: 8,193,924 km (0.115 R)
• M10: 10,003,759 km (0.106 R)
• M11: 11,089,241 km (0.113 R)
• M12: 11,660,705 km (0.119 R)
• M13: 13,248,836 km (0.079 R)
• M14: 14,197,137 km (0.081 R)
• M15: 15,404,990 km (0.098 R)
• M16: 16,341,024 km (0.098 R)
• M17: 20,208,428 km (0.104 R)
• M18: 25,095,641 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 519.5

Radius: 6.3

Gravity: 13.09 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 6.06 AU - 9.14 AU

Year: 13322 Days

Day: 19 Hours

Environment

Temp: -225 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 52,921,753 km

• M1: 79,287 km (0.067 R)
• M2: 396,883 km (0.08 R)
• M3: 738,265 km (0.066 R)
• M4: 1,039,705 km (0.12 R)
• M5: 1,407,566 km (0.069 R)
• M6: 1,745,807 km (0.101 R)
• M7: 1,960,181 km (0.026 R)
• M8: 3,310,451 km (0.106 R)
• M9: 4,368,258 km (0.099 R)
• M10: 5,188,503 km (0.099 R)
• M11: 5,599,747 km (0.08 R)
• M12: 7,551,551 km (0.115 R)
• M13: 8,170,288 km (0.085 R)
• M14: 8,918,277 km (0.112 R)
• M15: 10,229,502 km (0.073 R)
• M16: 11,549,704 km (0.094 R)
• M17: 15,548,455 km (0.11 R)
• M18: 17,362,478 km (0.111 R)
• M19: 20,466,784 km (0.033 R)
• M20: 22,460,924 km (0.091 R)
• M21: 24,581,025 km (0.113 R)
• M22: 27,439,690 km (0.052 R)
• M23: 29,214,519 km (0.069 R)
• M24: 30,075,605 km (0.119 R)
• M25: 40,294,785 km (0.109 R)
• M26: 42,309,719 km (0.107 R)
• M27: 45,671,781 km (0.05 R)
• M28: 48,906,237 km (0.065 R)
• M29: 51,819,805 km (0.073 R)
• M30: 52,447,517 km (0.085 R)
• M31: 52,921,743 km (0.106 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 488 - 14,811 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit