🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.72

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.5 AU - 0.64 AU

Year: 282 Days

Day: 39.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 8.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 24,361,409 km

• M1: 113,395 km (0.06 R)
• M2: 186,549 km (0.102 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948

Radius: 11.2

Gravity: 7.56 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.8 AU - 0.9 AU

Year: 514 Days

Day: 8.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 102.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 24,361,409 km

• M1: 139,276 km (0.029 R)
• M2: 592,707 km (0.095 R)
• M3: 1,193,791 km (0.082 R)
• M4: 1,575,116 km (0.101 R)
• M5: 2,021,067 km (0.07 R)
• M6: 2,667,480 km (0.116 R)
• M7: 3,016,342 km (0.077 R)
• M8: 3,739,049 km (0.111 R)
• M9: 4,178,418 km (0.093 R)
• M10: 4,748,087 km (0.11 R)
• M11: 6,570,039 km (0.115 R)
• M12: 7,021,974 km (0.035 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.4

Radius: 13.5

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.63 AU - 2.11 AU

Year: 1678 Days

Day: 6.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 24,361,409 km

• M1: 168,597 km (0.057 R)
• M2: 829,670 km (0.113 R)
• M3: 1,860,100 km (0.114 R)
• M4: 3,579,279 km (0.039 R)
• M5: 5,284,994 km (0.118 R)
• M6: 6,630,327 km (0.097 R)
• M7: 8,088,458 km (0.072 R)
• M8: 8,755,664 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.5

Radius: 9

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.92 AU - 2.24 AU

Year: 1968 Days

Day: 10.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 24,361,409 km

• M1: 111,899 km (0.088 R)
• M2: 417,677 km (0.087 R)
• M3: 851,062 km (0.092 R)
• M4: 1,525,300 km (0.059 R)
• M5: 3,218,149 km (0.084 R)
• M6: 3,768,670 km (0.093 R)
• M7: 4,297,348 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.6

Radius: 14.1

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 2.33 AU - 3.85 AU

Year: 3563 Days

Day: 6 Hours

Environment

Temp: -206 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 24,361,409 km

• M1: 175,329 km (0.088 R)
• M2: 696,976 km (0.073 R)
• M3: 1,384,678 km (0.111 R)
• M4: 2,179,192 km (0.079 R)
• M5: 2,665,535 km (0.119 R)
• M6: 3,533,502 km (0.106 R)
• M7: 4,348,361 km (0.092 R)
• M8: 5,128,813 km (0.072 R)
• M9: 6,029,991 km (0.063 R)
• M10: 6,656,806 km (0.088 R)
• M11: 7,098,569 km (0.09 R)
• M12: 9,931,055 km (0.116 R)
• M13: 10,893,418 km (0.036 R)
• M14: 11,464,283 km (0.055 R)
• M15: 12,381,617 km (0.107 R)
• M16: 14,104,237 km (0.071 R)
• M17: 15,538,581 km (0.108 R)
• M18: 18,142,332 km (0.038 R)
• M19: 19,388,183 km (0.116 R)
• M20: 21,567,525 km (0.091 R)
• M21: 24,721,347 km (0.068 R)
• M22: 25,940,869 km (0.039 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.8

Radius: 10

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 4.34 AU - 4.66 AU

Year: 6262 Days

Day: 8 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 24,361,409 km

• M1: 126,261 km (0.034 R)
• M2: 444,455 km (0.056 R)
• M3: 804,537 km (0.06 R)
• M4: 1,124,378 km (0.099 R)
• M5: 1,644,529 km (0.071 R)
• M6: 2,142,989 km (0.04 R)
• M7: 3,149,334 km (0.106 R)
• M8: 5,506,099 km (0.068 R)
• M9: 6,226,114 km (0.113 R)
• M10: 6,832,584 km (0.082 R)
• M11: 7,186,233 km (0.074 R)
• M12: 7,626,649 km (0.092 R)
• M13: 8,400,818 km (0.056 R)
• M14: 9,615,403 km (0.071 R)
• M15: 11,526,965 km (0.078 R)
• M16: 12,389,396 km (0.106 R)
• M17: 12,863,173 km (0.04 R)
• M18: 14,185,618 km (0.09 R)
• M19: 15,840,619 km (0.089 R)
• M20: 16,336,237 km (0.099 R)
• M21: 18,018,764 km (0.079 R)
• M22: 18,355,060 km (0.075 R)
• M23: 19,319,219 km (0.078 R)
• M24: 20,389,442 km (0.067 R)
• M25: 20,754,760 km (0.106 R)
• M26: 23,435,853 km (0.101 R)
• M27: 24,324,015 km (0.065 R)
• M28: 26,339,697 km (0.074 R)
• M29: 28,646,347 km (0.034 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 31.3

Radius: 7.2

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 8.4 AU - 9.08 AU

Year: 16950 Days

Day: 17.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 24,361,409 km

• M1: 97,538 km (0.115 R)
• M2: 377,286 km (0.07 R)
• M3: 1,762,413 km (0.084 R)
• M4: 5,735,433 km (0.102 R)
• M5: 8,998,761 km (0.089 R)
• M6: 19,802,270 km (0.112 R)
• M7: 24,361,415 km (0.111 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 260 - 20,213 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit