🌌 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: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.4 AU - 0.62 AU

Year: 232 Days

Day: 23.4 Hours

Environment

Temp: -114 °C

Axial Tilt: 46.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 36,620,496 km

• M1: 13,015 km (0.034 R)
• M2: 33,360 km (0.075 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.48

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.43 AU - 0.61 AU

Year: 238 Days

Day: 42.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.9

Radius: 13.3

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.78 AU - 1.2 AU

Year: 626 Days

Day: 10.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,620,496 km

• M1: 165,455 km (0.117 R)
• M2: 643,869 km (0.094 R)
• M3: 1,137,991 km (0.098 R)
• M4: 1,696,889 km (0.105 R)
• M5: 2,202,978 km (0.107 R)
• M6: 2,743,027 km (0.106 R)
• M7: 3,592,294 km (0.103 R)
• M8: 4,900,976 km (0.101 R)
• M9: 6,587,093 km (0.035 R)
• M10: 7,255,796 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.8

Radius: 10.5

Gravity: 7.79 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.92 AU - 1.26 AU

Year: 724 Days

Day: 9.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,620,496 km

• M1: 130,599 km (0.078 R)
• M2: 478,115 km (0.102 R)
• M3: 899,532 km (0.077 R)
• M4: 1,331,571 km (0.098 R)
• M5: 1,700,479 km (0.106 R)
• M6: 2,138,053 km (0.111 R)
• M7: 3,061,221 km (0.038 R)
• M8: 3,417,863 km (0.089 R)
• M9: 4,121,122 km (0.074 R)
• M10: 4,458,017 km (0.057 R)
• M11: 4,953,634 km (0.1 R)
• M12: 5,428,907 km (0.086 R)
• M13: 6,198,737 km (0.086 R)
• M14: 6,751,352 km (0.071 R)
• M15: 7,244,277 km (0.114 R)
• M16: 8,842,581 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 47.3

Radius: 10.7

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 2.62 AU - 3.72 AU

Year: 3589 Days

Day: 6.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,620,496 km

• M1: 133,142 km (0.091 R)
• M2: 838,346 km (0.103 R)
• M3: 2,044,704 km (0.119 R)
• M4: 3,282,177 km (0.076 R)
• M5: 3,913,181 km (0.109 R)
• M6: 4,764,543 km (0.11 R)
• M7: 5,168,158 km (0.041 R)
• M8: 7,737,351 km (0.102 R)
• M9: 9,241,857 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 871.5

Radius: 9.3

Gravity: 10.08 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 3.31 AU - 3.35 AU

Year: 3864 Days

Day: 8.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 36,620,496 km

• M1: 123,119 km (0.063 R)
• M2: 428,149 km (0.038 R)
• M3: 886,517 km (0.114 R)
• M4: 1,252,134 km (0.115 R)
• M5: 1,924,876 km (0.116 R)
• M6: 2,768,907 km (0.095 R)
• M7: 3,463,640 km (0.114 R)
• M8: 3,819,832 km (0.038 R)
• M9: 4,154,333 km (0.069 R)
• M10: 4,532,666 km (0.118 R)
• M11: 6,282,213 km (0.107 R)
• M12: 7,967,732 km (0.058 R)
• M13: 8,704,651 km (0.101 R)
• M14: 12,544,081 km (0.047 R)
• M15: 12,886,959 km (0.111 R)
• M16: 13,797,711 km (0.079 R)
• M17: 14,163,178 km (0.042 R)
• M18: 16,319,482 km (0.099 R)
• M19: 16,846,515 km (0.059 R)
• M20: 18,685,821 km (0.065 R)
• M21: 19,069,091 km (0.098 R)
• M22: 19,719,692 km (0.085 R)
• M23: 26,818,261 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.7

Radius: 12.6

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 5.16 AU - 6.78 AU

Year: 9275 Days

Day: 12.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 36,620,496 km

• M1: 179,817 km (0.115 R)
• M2: 612,753 km (0.048 R)
• M3: 1,040,902 km (0.103 R)
• M4: 1,639,742 km (0.109 R)
• M5: 2,511,748 km (0.118 R)
• M6: 3,965,540 km (0.102 R)
• M7: 6,043,455 km (0.053 R)
• M8: 7,880,068 km (0.094 R)
• M9: 8,411,589 km (0.037 R)
• M10: 9,171,247 km (0.098 R)
• M11: 9,674,345 km (0.067 R)
• M12: 12,421,111 km (0.096 R)
• M13: 12,933,484 km (0.087 R)
• M14: 16,677,021 km (0.105 R)
• M15: 21,597,893 km (0.112 R)
• M16: 22,793,031 km (0.089 R)
• M17: 29,618,882 km (0.072 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 141.9

Radius: 3.1

Gravity: 14.77 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 6.36 AU - 7.7 AU

Year: 11851 Days

Day: 18.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 36,620,496 km

• M1: 43,533 km (0.087 R)
• M2: 170,990 km (0.091 R)
• M3: 300,093 km (0.07 R)
• M4: 720,164 km (0.108 R)
• M5: 974,481 km (0.035 R)
• M6: 1,698,085 km (0.108 R)
• M7: 2,008,501 km (0.036 R)
• M8: 2,987,619 km (0.116 R)
• M9: 7,028,856 km (0.112 R)
• M10: 8,472,176 km (0.111 R)
• M11: 10,460,033 km (0.113 R)
• M12: 11,585,757 km (0.061 R)
• M13: 12,430,237 km (0.115 R)
• M14: 14,862,548 km (0.1 R)
• M15: 15,267,360 km (0.094 R)
• M16: 15,501,930 km (0.103 R)
• M17: 15,978,399 km (0.117 R)
• M18: 16,159,412 km (0.109 R)
• M19: 18,774,084 km (0.094 R)
• M20: 20,076,034 km (0.113 R)
• M21: 22,705,516 km (0.106 R)
• M22: 24,340,621 km (0.088 R)
• M23: 24,821,877 km (0.105 R)
• M24: 25,886,266 km (0.062 R)
• M25: 27,756,090 km (0.102 R)
• M26: 31,006,702 km (0.059 R)
• M27: 31,288,544 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 201.6

Radius: 5.5

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 5.49 AU - 8.93 AU

Year: 12309 Days

Day: 24.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 36,620,496 km

• M1: 72,256 km (0.112 R)
• M2: 281,543 km (0.088 R)
• M3: 495,917 km (0.118 R)
• M4: 1,045,540 km (0.065 R)
• M5: 1,467,406 km (0.106 R)
• M6: 1,731,446 km (0.107 R)
• M7: 1,950,008 km (0.083 R)
• M8: 2,390,275 km (0.1 R)
• M9: 3,224,732 km (0.075 R)
• M10: 3,534,250 km (0.065 R)
• M11: 3,985,736 km (0.113 R)
• M12: 4,917,132 km (0.08 R)
• M13: 5,603,039 km (0.117 R)
• M14: 7,163,344 km (0.067 R)
• M15: 7,885,005 km (0.081 R)
• M16: 8,202,900 km (0.035 R)
• M17: 8,949,543 km (0.086 R)
• M18: 9,208,198 km (0.112 R)
• M19: 11,111,232 km (0.105 R)
• M20: 14,463,870 km (0.078 R)
• M21: 15,182,389 km (0.106 R)
• M22: 15,365,796 km (0.045 R)
• M23: 16,886,009 km (0.098 R)
• M24: 17,885,473 km (0.099 R)
• M25: 21,424,958 km (0.115 R)
• M26: 22,436,838 km (0.117 R)
• M27: 31,308,441 km (0.116 R)
• M28: 31,904,738 km (0.096 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: 255 - 20,104 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit