🌌 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: 1.27

Radius: 1.1

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.43 AU - 0.69 AU

Year: 271 Days

Day: 41 Hours

Environment

Temp: -116 °C

Axial Tilt: 146.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.49 AU - 0.65 AU

Year: 278 Days

Day: 19 Hours

Environment

Temp: -117 °C

Axial Tilt: 42.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 883.5

Radius: 10.5

Gravity: 8.01 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.57 AU - 0.81 AU

Year: 370 Days

Day: 12.9 Hours

Environment

Temp: -135 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,277,692 km

• M1: 131,497 km (0.077 R)
• M2: 541,245 km (0.038 R)
• M3: 873,053 km (0.116 R)
• M4: 1,299,706 km (0.075 R)
• M5: 1,935,048 km (0.106 R)
• M6: 2,407,030 km (0.116 R)
• M7: 2,839,068 km (0.112 R)
• M8: 3,380,762 km (0.12 R)
• M9: 3,990,224 km (0.086 R)
• M10: 4,342,527 km (0.119 R)
• M11: 4,730,434 km (0.066 R)
• M12: 5,659,437 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.6

Radius: 10.7

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.89 AU - 0.99 AU

Year: 588 Days

Day: 5.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 27,277,692 km

• M1: 133,591 km (0.065 R)
• M2: 536,907 km (0.102 R)
• M3: 956,080 km (0.098 R)
• M4: 1,441,824 km (0.103 R)
• M5: 1,982,621 km (0.119 R)
• M6: 2,338,963 km (0.09 R)
• M7: 3,141,705 km (0.118 R)
• M8: 4,321,284 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996.7

Radius: 12.1

Gravity: 6.81 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.18 AU - 3.3 AU

Year: 2928 Days

Day: 13.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 27,277,692 km

• M1: 150,495 km (0.037 R)
• M2: 608,714 km (0.117 R)
• M3: 1,365,978 km (0.115 R)
• M4: 1,779,018 km (0.041 R)
• M5: 2,348,537 km (0.036 R)
• M6: 2,968,022 km (0.092 R)
• M7: 3,575,090 km (0.115 R)
• M8: 4,466,244 km (0.119 R)
• M9: 6,627,036 km (0.079 R)
• M10: 7,969,677 km (0.101 R)
• M11: 10,932,463 km (0.092 R)
• M12: 12,020,039 km (0.094 R)
• M13: 12,706,394 km (0.112 R)
• M14: 13,760,162 km (0.047 R)
• M15: 14,511,442 km (0.062 R)
• M16: 20,237,301 km (0.107 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 761.1

Radius: 3.7

Gravity: 55.6 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 6.37 AU - 7.27 AU

Year: 11500 Days

Day: 19.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 27,277,692 km

• M1: 46,525 km (0.059 R)
• M2: 229,782 km (0.115 R)
• M3: 564,732 km (0.076 R)
• M4: 866,471 km (0.027 R)
• M5: 1,863,840 km (0.088 R)
• M6: 2,523,267 km (0.1 R)
• M7: 4,284,932 km (0.102 R)
• M8: 4,811,666 km (0.102 R)
• M9: 4,941,666 km (0.072 R)
• M10: 6,609,832 km (0.07 R)
• M11: 8,336,940 km (0.117 R)
• M12: 8,571,958 km (0.089 R)
• M13: 9,866,279 km (0.061 R)
• M14: 10,835,075 km (0.107 R)
• M15: 13,275,165 km (0.113 R)
• M16: 15,346,348 km (0.103 R)
• M17: 17,932,446 km (0.059 R)
• M18: 19,205,823 km (0.077 R)
• M19: 21,753,625 km (0.117 R)
• M20: 23,571,837 km (0.1 R)
• M21: 23,758,984 km (0.097 R)
• M22: 25,000,048 km (0.084 R)
• M23: 25,685,954 km (0.119 R)
• M24: 26,283,747 km (0.111 R)
• M25: 26,890,816 km (0.103 R)
• M26: 28,661,306 km (0.12 R)
• M27: 29,196,568 km (0.095 R)
• M28: 31,744,369 km (0.09 R)
• M29: 35,776,331 km (0.079 R)
• M30: 36,898,016 km (0.102 R)
• M31: 37,531,263 km (0.093 R)
• M32: 44,124,490 km (0.066 R)
• M33: 51,763,706 km (0.058 R)
• M34: 53,519,386 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 43.1

Radius: 7.3

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 7.57 AU - 10.21 AU

Year: 17115 Days

Day: 22.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,277,692 km

• M1: 128,953 km (0.079 R)
• M2: 557,701 km (0.106 R)
• M3: 1,456,784 km (0.083 R)
• M4: 3,654,826 km (0.079 R)
• M5: 3,891,489 km (0.086 R)
• M6: 6,696,449 km (0.11 R)
• M7: 8,194,523 km (0.07 R)
• M8: 11,242,130 km (0.1 R)
• M9: 14,062,798 km (0.115 R)
• M10: 18,808,043 km (0.062 R)
• M11: 25,211,729 km (0.044 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 204 - 11,327 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit