🌌 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: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.45 AU - 0.57 AU

Year: 235 Days

Day: 23.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 49 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314.9

Radius: 10.1

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.64 AU - 0.74 AU

Year: 370 Days

Day: 10.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 79,437,549 km

• M1: 127,607 km (0.117 R)
• M2: 515,813 km (0.104 R)
• M3: 1,150,108 km (0.078 R)
• M4: 2,537,030 km (0.113 R)
• M5: 2,942,740 km (0.101 R)
• M6: 3,360,118 km (0.034 R)
• M7: 3,783,031 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 509.3

Radius: 12.8

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.88 AU - 0.9 AU

Year: 542 Days

Day: 5.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 79,437,549 km

• M1: 159,172 km (0.09 R)
• M2: 608,265 km (0.108 R)
• M3: 1,026,241 km (0.056 R)
• M4: 1,763,011 km (0.113 R)
• M5: 2,526,708 km (0.074 R)
• M6: 3,057,631 km (0.095 R)
• M7: 3,500,889 km (0.103 R)
• M8: 4,000,845 km (0.116 R)
• M9: 4,417,476 km (0.111 R)
• M10: 5,145,269 km (0.052 R)
• M11: 5,863,638 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.8

Radius: 14.5

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.89 AU - 0.93 AU

Year: 561 Days

Day: 11.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 79,437,549 km

• M1: 191,784 km (0.102 R)
• M2: 672,143 km (0.105 R)
• M3: 1,230,742 km (0.117 R)
• M4: 1,755,082 km (0.077 R)
• M5: 2,291,839 km (0.057 R)
• M6: 2,835,628 km (0.036 R)
• M7: 3,745,931 km (0.057 R)
• M8: 5,585,237 km (0.035 R)
• M9: 6,745,218 km (0.045 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.8

Radius: 9.1

Gravity: 9.77 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 2.56 AU - 2.74 AU

Year: 2785 Days

Day: 11.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 79,437,549 km

• M1: 113,246 km (0.093 R)
• M2: 441,015 km (0.115 R)
• M3: 778,657 km (0.086 R)
• M4: 1,074,861 km (0.115 R)
• M5: 1,739,973 km (0.116 R)
• M6: 2,084,946 km (0.087 R)
• M7: 2,981,186 km (0.09 R)
• M8: 3,948,935 km (0.037 R)
• M9: 4,438,419 km (0.116 R)
• M10: 6,349,083 km (0.086 R)
• M11: 6,782,618 km (0.107 R)
• M12: 11,284,167 km (0.119 R)
• M13: 11,621,062 km (0.098 R)
• M14: 11,964,539 km (0.07 R)
• M15: 13,406,812 km (0.083 R)
• M16: 14,414,204 km (0.107 R)
• M17: 17,626,369 km (0.1 R)
• M18: 18,310,181 km (0.118 R)
• M19: 20,096,828 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.5

Radius: 11.9

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 2.81 AU - 3.91 AU

Year: 3977 Days

Day: 10.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 79,437,549 km

• M1: 151,094 km (0.118 R)
• M2: 759,209 km (0.081 R)
• M3: 1,166,265 km (0.04 R)
• M4: 1,600,398 km (0.058 R)
• M5: 1,999,974 km (0.1 R)
• M6: 3,006,020 km (0.111 R)
• M7: 3,433,122 km (0.064 R)
• M8: 4,257,705 km (0.104 R)
• M9: 5,670,507 km (0.11 R)
• M10: 6,822,411 km (0.07 R)
• M11: 9,140,579 km (0.072 R)
• M12: 10,122,091 km (0.109 R)
• M13: 10,679,044 km (0.112 R)
• M14: 11,130,979 km (0.106 R)
• M15: 11,767,668 km (0.038 R)
• M16: 13,160,573 km (0.114 R)
• M17: 13,776,468 km (0.103 R)
• M18: 17,315,954 km (0.051 R)
• M19: 19,537,332 km (0.113 R)
• M20: 21,485,396 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 982.9

Radius: 5.8

Gravity: 29.22 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 8.04 AU - 10.7 AU

Year: 18519 Days

Day: 20.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 79,437,549 km

• M1: 78,539 km (0.091 R)
• M2: 336,146 km (0.096 R)
• M3: 563,236 km (0.063 R)
• M4: 1,184,217 km (0.109 R)
• M5: 2,249,653 km (0.1 R)
• M6: 3,052,993 km (0.03 R)
• M7: 4,684,657 km (0.101 R)
• M8: 5,054,463 km (0.107 R)
• M9: 5,645,375 km (0.058 R)
• M10: 6,777,232 km (0.099 R)
• M11: 7,154,069 km (0.113 R)
• M12: 9,422,871 km (0.039 R)
• M13: 12,337,336 km (0.094 R)
• M14: 17,843,735 km (0.034 R)
• M15: 21,326,074 km (0.056 R)
• M16: 23,597,867 km (0.093 R)
• M17: 34,437,579 km (0.053 R)
• M18: 34,851,666 km (0.054 R)
• M19: 45,646,499 km (0.081 R)
• M20: 49,395,123 km (0.043 R)
• M21: 61,255,092 km (0.114 R)
• M22: 62,884,662 km (0.118 R)
• M23: 72,593,115 km (0.115 R)
• M24: 73,046,396 km (0.114 R)
• M25: 78,872,336 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 579.1

Radius: 3.7

Gravity: 42.3 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 9.23 AU - 12.55 AU

Year: 23204 Days

Day: 16.9 Hours

Environment

Temp: -241 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 79,437,549 km

• M1: 46,974 km (0.087 R)
• M2: 216,468 km (0.1 R)
• M3: 2,298,571 km (0.084 R)
• M4: 3,420,855 km (0.089 R)
• M5: 8,554,605 km (0.08 R)
• M6: 10,210,055 km (0.051 R)
• M7: 11,865,654 km (0.102 R)
• M8: 12,408,994 km (0.099 R)
• M9: 16,601,325 km (0.119 R)
• M10: 18,784,705 km (0.114 R)
• M11: 23,923,991 km (0.074 R)
• M12: 36,716,105 km (0.097 R)
• M13: 38,157,779 km (0.037 R)
• M14: 40,087,741 km (0.119 R)
• M15: 41,307,263 km (0.09 R)
• M16: 43,341,346 km (0.12 R)
• M17: 47,101,638 km (0.104 R)
• M18: 51,786,594 km (0.061 R)
• M19: 69,848,443 km (0.098 R)
• M20: 78,017,085 km (0.05 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: 203 - 12,341 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit