🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.47 AU - 0.65 AU

Year: 266 Days

Day: 14.4 Hours

Environment

Temp: -130 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.9

Radius: 9

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.76 AU - 0.9 AU

Year: 481 Days

Day: 13.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 50,322,425 km

• M1: 111,899 km (0.041 R)
• M2: 415,732 km (0.04 R)
• M3: 728,990 km (0.11 R)
• M4: 1,268,889 km (0.08 R)
• M5: 1,718,580 km (0.112 R)
• M6: 2,091,378 km (0.111 R)
• M7: 2,631,427 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.3

Radius: 13.7

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.07 AU - 1.19 AU

Year: 764 Days

Day: 9.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 50,322,425 km

• M1: 171,439 km (0.025 R)
• M2: 666,608 km (0.062 R)
• M3: 1,767,349 km (0.112 R)
• M4: 2,264,014 km (0.095 R)
• M5: 3,355,181 km (0.04 R)
• M6: 3,805,022 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328

Radius: 11

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.99 AU - 1.47 AU

Year: 867 Days

Day: 7.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,322,425 km

• M1: 136,882 km (0.075 R)
• M2: 601,832 km (0.098 R)
• M3: 1,317,060 km (0.115 R)
• M4: 2,044,853 km (0.119 R)
• M5: 2,652,819 km (0.106 R)
• M6: 3,058,828 km (0.119 R)
• M7: 4,410,744 km (0.103 R)
• M8: 5,446,410 km (0.083 R)
• M9: 6,222,224 km (0.092 R)
• M10: 6,758,832 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 871.1

Radius: 9.7

Gravity: 9.26 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.5 AU - 1.7 AU

Year: 1287 Days

Day: 12.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 50,322,425 km

• M1: 120,576 km (0.064 R)
• M2: 538,403 km (0.045 R)
• M3: 880,832 km (0.064 R)
• M4: 1,237,922 km (0.098 R)
• M5: 1,740,571 km (0.04 R)
• M6: 2,399,400 km (0.116 R)
• M7: 2,773,395 km (0.109 R)
• M8: 3,112,384 km (0.106 R)
• M9: 3,431,476 km (0.094 R)
• M10: 4,065,322 km (0.081 R)
• M11: 4,504,691 km (0.088 R)
• M12: 5,371,012 km (0.097 R)
• M13: 6,085,043 km (0.072 R)
• M14: 6,835,875 km (0.085 R)
• M15: 7,512,057 km (0.036 R)
• M16: 9,681,974 km (0.113 R)
• M17: 10,841,358 km (0.101 R)
• M18: 11,259,484 km (0.101 R)
• M19: 12,540,790 km (0.098 R)
• M20: 12,885,463 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 126.7

Radius: 10.8

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 2.15 AU - 2.29 AU

Year: 2103 Days

Day: 6.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,322,425 km

• M1: 141,520 km (0.097 R)
• M2: 489,185 km (0.041 R)
• M3: 907,461 km (0.059 R)
• M4: 1,375,552 km (0.084 R)
• M5: 1,992,644 km (0.101 R)
• M6: 2,822,912 km (0.118 R)
• M7: 4,040,788 km (0.073 R)
• M8: 5,195,833 km (0.105 R)
• M9: 5,599,747 km (0.113 R)
• M10: 6,405,930 km (0.105 R)
• M11: 6,848,441 km (0.057 R)
• M12: 7,819,780 km (0.085 R)
• M13: 8,377,630 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.5

Radius: 11.2

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 4.87 AU - 5.93 AU

Year: 7979 Days

Day: 6.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,322,425 km

• M1: 139,724 km (0.075 R)
• M2: 534,214 km (0.076 R)
• M3: 900,280 km (0.036 R)
• M4: 1,297,462 km (0.091 R)
• M5: 2,508,008 km (0.066 R)
• M6: 6,540,120 km (0.103 R)
• M7: 7,137,015 km (0.059 R)
• M8: 8,033,406 km (0.099 R)
• M9: 11,174,811 km (0.107 R)
• M10: 12,971,781 km (0.035 R)
• M11: 13,866,675 km (0.109 R)
• M12: 16,150,287 km (0.085 R)
• M13: 16,799,242 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 696.2

Radius: 4.8

Gravity: 30.22 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 7.85 AU - 8.95 AU

Year: 15479 Days

Day: 23.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 50,322,425 km

• M1: 60,438 km (0.08 R)
• M2: 214,673 km (0.06 R)
• M3: 699,968 km (0.084 R)
• M4: 950,395 km (0.118 R)
• M5: 1,384,977 km (0.113 R)
• M6: 2,250,999 km (0.042 R)
• M7: 3,141,406 km (0.116 R)
• M8: 4,245,288 km (0.089 R)
• M9: 5,146,616 km (0.078 R)
• M10: 6,921,145 km (0.084 R)
• M11: 7,874,084 km (0.052 R)
• M12: 9,436,185 km (0.106 R)
• M13: 10,837,618 km (0.072 R)
• M14: 11,618,668 km (0.032 R)
• M15: 13,631,358 km (0.103 R)
• M16: 14,540,464 km (0.118 R)
• M17: 18,082,194 km (0.072 R)
• M18: 18,247,948 km (0.113 R)
• M19: 19,524,467 km (0.114 R)
• M20: 21,225,095 km (0.113 R)
• M21: 21,502,450 km (0.062 R)
• M22: 23,511,400 km (0.094 R)
• M23: 25,330,211 km (0.098 R)
• M24: 25,746,691 km (0.075 R)
• M25: 27,240,575 km (0.118 R)
• M26: 32,067,500 km (0.106 R)
• M27: 32,677,560 km (0.048 R)
• M28: 33,920,868 km (0.043 R)
• M29: 37,974,821 km (0.111 R)
• M30: 41,183,247 km (0.029 R)
• M31: 41,614,537 km (0.079 R)
• M32: 42,926,660 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 314.8

Radius: 6.6

Gravity: 7.23 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 8.15 AU - 8.93 AU

Year: 15868 Days

Day: 19.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 50,322,425 km

• M1: 145,409 km (0.089 R)
• M2: 574,456 km (0.03 R)
• M3: 857,645 km (0.088 R)
• M4: 1,149,809 km (0.119 R)
• M5: 1,697,637 km (0.113 R)
• M6: 2,254,590 km (0.072 R)
• M7: 2,926,882 km (0.074 R)
• M8: 4,539,248 km (0.107 R)
• M9: 6,102,097 km (0.078 R)
• M10: 6,475,793 km (0.067 R)
• M11: 6,707,370 km (0.107 R)
• M12: 7,393,576 km (0.069 R)
• M13: 7,646,695 km (0.082 R)
• M14: 8,578,391 km (0.034 R)
• M15: 11,768,416 km (0.092 R)
• M16: 13,689,103 km (0.112 R)
• M17: 14,007,148 km (0.101 R)
• M18: 15,260,329 km (0.115 R)
• M19: 16,947,943 km (0.097 R)
• M20: 18,369,272 km (0.118 R)
• M21: 20,440,604 km (0.112 R)
• M22: 23,377,809 km (0.108 R)
• M23: 28,808,810 km (0.083 R)
• M24: 38,569,173 km (0.118 R)
• M25: 39,331,375 km (0.119 R)
• M26: 40,233,151 km (0.117 R)
• M27: 44,809,948 km (0.117 R)
• M28: 46,647,758 km (0.09 R)
• M29: 49,572,546 km (0.083 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 184 - 17,095 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit