🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.53 AU - 0.57 AU

Year: 268 Days

Day: 25.2 Hours

Environment

Temp: -118 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.53 AU - 0.65 AU

Year: 297 Days

Day: 24.6 Hours

Environment

Temp: -127 °C

Axial Tilt: 27.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,370,186 km

• M1: 88,113 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.3

Radius: 11.7

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.75 AU - 1.01 AU

Year: 542 Days

Day: 14.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 81,370,186 km

• M1: 145,559 km (0.074 R)
• M2: 1,095,056 km (0.101 R)
• M3: 1,471,145 km (0.103 R)
• M4: 1,943,875 km (0.112 R)
• M5: 2,366,638 km (0.088 R)
• M6: 3,503,283 km (0.118 R)
• M7: 4,297,947 km (0.065 R)
• M8: 4,714,427 km (0.078 R)
• M9: 5,557,411 km (0.065 R)
• M10: 6,053,029 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.1

Radius: 8.5

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.13 AU - 1.35 AU

Year: 906 Days

Day: 6.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 81,370,186 km

• M1: 106,514 km (0.114 R)
• M2: 371,601 km (0.07 R)
• M3: 657,931 km (0.1 R)
• M4: 1,609,374 km (0.101 R)
• M5: 2,205,372 km (0.118 R)
• M6: 2,549,896 km (0.072 R)
• M7: 2,985,973 km (0.098 R)
• M8: 3,635,527 km (0.107 R)
• M9: 3,980,201 km (0.087 R)
• M10: 4,317,843 km (0.106 R)
• M11: 4,813,162 km (0.119 R)
• M12: 5,792,878 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411

Radius: 10.7

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.7 AU - 2.32 AU

Year: 1869 Days

Day: 14.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 81,370,186 km

• M1: 133,740 km (0.105 R)
• M2: 489,933 km (0.102 R)
• M3: 823,087 km (0.11 R)
• M4: 1,262,905 km (0.076 R)
• M5: 1,635,105 km (0.118 R)
• M6: 2,505,615 km (0.115 R)
• M7: 2,903,246 km (0.061 R)
• M8: 3,404,848 km (0.103 R)
• M9: 3,743,088 km (0.038 R)
• M10: 4,468,937 km (0.086 R)
• M11: 5,119,239 km (0.067 R)
• M12: 6,106,585 km (0.115 R)
• M13: 7,035,289 km (0.089 R)
• M14: 7,426,936 km (0.119 R)
• M15: 7,943,797 km (0.078 R)
• M16: 8,838,691 km (0.118 R)
• M17: 10,156,648 km (0.119 R)
• M18: 12,038,141 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 540.7

Radius: 13

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 2.26 AU - 3.12 AU

Year: 2894 Days

Day: 9.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 81,370,186 km

• M1: 161,715 km (0.078 R)
• M2: 570,267 km (0.084 R)
• M3: 985,700 km (0.113 R)
• M4: 1,754,783 km (0.112 R)
• M5: 2,195,648 km (0.12 R)
• M6: 2,817,825 km (0.105 R)
• M7: 3,465,435 km (0.112 R)
• M8: 4,049,315 km (0.114 R)
• M9: 5,513,729 km (0.038 R)
• M10: 6,782,767 km (0.049 R)
• M11: 7,456,107 km (0.077 R)
• M12: 8,109,401 km (0.119 R)
• M13: 9,495,126 km (0.114 R)
• M14: 10,954,603 km (0.118 R)
• M15: 12,472,872 km (0.07 R)
• M16: 14,173,800 km (0.116 R)
• M17: 17,220,360 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 299

Radius: 14.3

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 3.31 AU - 5.21 AU

Year: 5768 Days

Day: 6.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 81,370,186 km

• M1: 177,872 km (0.105 R)
• M2: 659,427 km (0.047 R)
• M3: 1,684,771 km (0.094 R)
• M4: 3,212,016 km (0.115 R)
• M5: 5,608,574 km (0.118 R)
• M6: 6,314,825 km (0.071 R)
• M7: 6,766,611 km (0.08 R)
• M8: 7,803,474 km (0.064 R)
• M9: 8,254,063 km (0.038 R)
• M10: 10,647,628 km (0.069 R)
• M11: 11,688,082 km (0.082 R)
• M12: 19,913,421 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.6

Radius: 11

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 4.26 AU - 5.54 AU

Year: 7115 Days

Day: 11.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 81,370,186 km

• M1: 136,732 km (0.105 R)
• M2: 702,212 km (0.091 R)
• M3: 1,086,230 km (0.106 R)
• M4: 1,767,798 km (0.047 R)
• M5: 2,569,044 km (0.081 R)
• M6: 2,955,007 km (0.082 R)
• M7: 3,322,270 km (0.112 R)
• M8: 3,887,899 km (0.034 R)
• M9: 4,307,671 km (0.103 R)
• M10: 5,291,127 km (0.094 R)
• M11: 5,836,112 km (0.075 R)
• M12: 6,239,578 km (0.08 R)
• M13: 7,698,755 km (0.114 R)
• M14: 8,654,686 km (0.116 R)
• M15: 9,104,227 km (0.09 R)
• M16: 13,729,943 km (0.03 R)
• M17: 15,187,026 km (0.113 R)
• M18: 18,590,677 km (0.092 R)
• M19: 19,214,051 km (0.075 R)
• M20: 19,594,628 km (0.119 R)
• M21: 23,975,004 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 882.9

Radius: 3.1

Gravity: 91.87 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 7.98 AU - 11.2 AU

Year: 19482 Days

Day: 22.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 81,370,186 km

• M1: 41,439 km (0.085 R)
• M2: 359,334 km (0.077 R)
• M3: 520,900 km (0.074 R)
• M4: 689,197 km (0.044 R)
• M5: 1,015,321 km (0.043 R)
• M6: 1,921,285 km (0.114 R)
• M7: 2,105,440 km (0.098 R)
• M8: 2,368,882 km (0.107 R)
• M9: 2,654,016 km (0.073 R)
• M10: 3,708,082 km (0.071 R)
• M11: 4,716,073 km (0.072 R)
• M12: 5,603,039 km (0.11 R)
• M13: 5,978,529 km (0.039 R)
• M14: 7,351,539 km (0.036 R)
• M15: 9,202,812 km (0.115 R)
• M16: 9,724,759 km (0.082 R)
• M17: 10,144,082 km (0.065 R)
• M18: 11,540,578 km (0.118 R)
• M19: 11,807,461 km (0.098 R)
• M20: 12,353,792 km (0.057 R)
• M21: 13,644,074 km (0.049 R)
• M22: 15,021,421 km (0.108 R)
• M23: 15,259,731 km (0.102 R)
• M24: 15,419,950 km (0.096 R)
• M25: 19,799,727 km (0.047 R)
• M26: 24,390,736 km (0.063 R)
• M27: 29,025,278 km (0.096 R)
• M28: 31,548,097 km (0.114 R)
• M29: 32,596,927 km (0.073 R)
• M30: 35,460,081 km (0.056 R)
• M31: 37,314,047 km (0.052 R)
• M32: 45,211,169 km (0.096 R)
• M33: 47,558,809 km (0.096 R)
• M34: 53,595,681 km (0.111 R)
• M35: 54,151,587 km (0.056 R)
• M36: 56,413,955 km (0.103 R)
• M37: 57,181,841 km (0.1 R)
• M38: 63,370,556 km (0.071 R)
• M39: 73,353,222 km (0.114 R)
• M40: 78,239,238 km (0.056 R)
• M41: 81,370,171 km (0.072 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 500 - 11,697 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit