🌌 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: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.59 AU - 0.71 AU

Year: 338 Days

Day: 39.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 10.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.8

Radius: 13.1

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.55 AU - 0.87 AU

Year: 386 Days

Day: 9.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 78,004,498 km

• M1: 163,810 km (0.104 R)
• M2: 655,239 km (0.081 R)
• M3: 1,131,110 km (0.088 R)
• M4: 1,723,517 km (0.094 R)
• M5: 2,404,636 km (0.091 R)
• M6: 2,882,901 km (0.085 R)
• M7: 3,521,384 km (0.052 R)
• M8: 4,020,592 km (0.049 R)
• M9: 4,479,708 km (0.081 R)
• M10: 6,001,567 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.6

Radius: 8.5

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.9 AU - 1.44 AU

Year: 817 Days

Day: 11.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 78,004,498 km

• M1: 105,766 km (0.103 R)
• M2: 465,399 km (0.076 R)
• M3: 749,785 km (0.091 R)
• M4: 1,047,634 km (0.085 R)
• M5: 1,339,200 km (0.119 R)
• M6: 1,876,406 km (0.076 R)
• M7: 2,410,022 km (0.067 R)
• M8: 2,793,890 km (0.095 R)
• M9: 3,389,738 km (0.093 R)
• M10: 4,416,728 km (0.099 R)
• M11: 5,092,012 km (0.052 R)
• M12: 5,673,499 km (0.106 R)
• M13: 5,962,074 km (0.039 R)
• M14: 6,374,814 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 938.8

Radius: 11.7

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.11 AU - 1.61 AU

Year: 1024 Days

Day: 7.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 78,004,498 km

• M1: 145,559 km (0.054 R)
• M2: 515,514 km (0.07 R)
• M3: 992,133 km (0.116 R)
• M4: 1,378,844 km (0.064 R)
• M5: 2,265,660 km (0.106 R)
• M6: 2,783,568 km (0.106 R)
• M7: 3,606,805 km (0.116 R)
• M8: 4,143,861 km (0.099 R)
• M9: 5,000,608 km (0.093 R)
• M10: 5,585,984 km (0.093 R)
• M11: 6,991,008 km (0.08 R)
• M12: 8,176,870 km (0.069 R)
• M13: 9,643,378 km (0.114 R)
• M14: 10,551,886 km (0.11 R)
• M15: 11,143,845 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 844.3

Radius: 10.1

Gravity: 8.28 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.13 AU - 1.71 AU

Year: 1093 Days

Day: 7.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 78,004,498 km

• M1: 125,662 km (0.111 R)
• M2: 619,485 km (0.116 R)
• M3: 1,241,962 km (0.117 R)
• M4: 1,586,785 km (0.06 R)
• M5: 1,975,739 km (0.11 R)
• M6: 2,323,105 km (0.105 R)
• M7: 3,072,740 km (0.105 R)
• M8: 3,390,935 km (0.056 R)
• M9: 4,094,195 km (0.108 R)
• M10: 5,430,403 km (0.057 R)
• M11: 5,920,186 km (0.103 R)
• M12: 6,278,024 km (0.099 R)
• M13: 6,963,631 km (0.108 R)
• M14: 7,413,771 km (0.075 R)
• M15: 8,344,868 km (0.113 R)
• M16: 9,027,035 km (0.095 R)
• M17: 9,684,667 km (0.083 R)
• M18: 11,468,771 km (0.03 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.3

Radius: 12.3

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.72 AU - 1.8 AU

Year: 1508 Days

Day: 11.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 78,004,498 km

• M1: 153,039 km (0.041 R)
• M2: 695,780 km (0.059 R)
• M3: 1,543,850 km (0.057 R)
• M4: 1,990,100 km (0.066 R)
• M5: 2,381,000 km (0.046 R)
• M6: 3,065,560 km (0.031 R)
• M7: 3,561,477 km (0.09 R)
• M8: 5,158,135 km (0.113 R)
• M9: 5,607,377 km (0.056 R)
• M10: 6,016,228 km (0.113 R)
• M11: 6,491,500 km (0.072 R)
• M12: 7,139,259 km (0.115 R)
• M13: 8,819,094 km (0.063 R)
• M14: 9,373,952 km (0.04 R)
• M15: 10,393,013 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 797.9

Radius: 6.2

Gravity: 20.76 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 7.84 AU - 11.38 AU

Year: 19235 Days

Day: 21.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 78,004,498 km

• M1: 77,342 km (0.113 R)
• M2: 758,312 km (0.118 R)
• M3: 1,000,660 km (0.068 R)
• M4: 1,339,051 km (0.102 R)
• M5: 2,098,110 km (0.111 R)
• M6: 2,826,951 km (0.091 R)
• M7: 5,408,711 km (0.088 R)
• M8: 6,403,537 km (0.084 R)
• M9: 8,271,416 km (0.042 R)
• M10: 9,133,399 km (0.062 R)
• M11: 10,113,115 km (0.114 R)
• M12: 13,835,858 km (0.11 R)
• M13: 17,248,335 km (0.093 R)
• M14: 20,890,744 km (0.076 R)
• M15: 21,875,397 km (0.076 R)
• M16: 24,043,370 km (0.105 R)
• M17: 24,471,968 km (0.09 R)
• M18: 30,019,954 km (0.034 R)
• M19: 30,267,838 km (0.03 R)
• M20: 30,767,495 km (0.111 R)
• M21: 36,773,999 km (0.092 R)
• M22: 45,119,915 km (0.077 R)
• M23: 51,215,729 km (0.11 R)
• M24: 54,828,517 km (0.106 R)
• M25: 58,029,912 km (0.078 R)
• M26: 59,383,623 km (0.112 R)
• M27: 59,578,698 km (0.038 R)
• M28: 64,390,065 km (0.038 R)
• M29: 65,840,716 km (0.114 R)
• M30: 66,259,141 km (0.12 R)
• M31: 76,379,437 km (0.102 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: 322 - 13,254 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit