🌌 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: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.39 AU - 0.63 AU

Year: 239 Days

Day: 27.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 103.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,221,948 km

• M1: 307,274 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.7

Radius: 11.4

Gravity: 6.36 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.87 AU - 1.01 AU

Year: 598 Days

Day: 9.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,221,948 km

• M1: 141,819 km (0.102 R)
• M2: 650,751 km (0.09 R)
• M3: 1,212,790 km (0.117 R)
• M4: 1,863,690 km (0.106 R)
• M5: 3,465,135 km (0.078 R)
• M6: 3,890,442 km (0.105 R)
• M7: 4,554,058 km (0.066 R)
• M8: 5,524,350 km (0.061 R)
• M9: 6,185,573 km (0.108 R)
• M10: 6,835,426 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.3

Radius: 8.3

Gravity: 13.33 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.84 AU - 1.06 AU

Year: 607 Days

Day: 5.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 51,221,948 km

• M1: 103,223 km (0.094 R)
• M2: 457,919 km (0.069 R)
• M3: 983,905 km (0.076 R)
• M4: 1,351,916 km (0.038 R)
• M5: 1,978,881 km (0.102 R)
• M6: 2,317,720 km (0.115 R)
• M7: 2,616,467 km (0.106 R)
• M8: 2,940,795 km (0.095 R)
• M9: 3,464,387 km (0.092 R)
• M10: 4,549,271 km (0.037 R)
• M11: 4,848,617 km (0.053 R)
• M12: 5,178,779 km (0.033 R)
• M13: 6,361,949 km (0.065 R)
• M14: 7,508,467 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 225.8

Radius: 12.8

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.86 AU - 1.14 AU

Year: 656 Days

Day: 5 Hours

Environment

Temp: -157 °C

Axial Tilt: 154.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,221,948 km

• M1: 159,172 km (0.086 R)
• M2: 607,517 km (0.108 R)
• M3: 1,082,041 km (0.114 R)
• M4: 1,621,192 km (0.1 R)
• M5: 2,268,502 km (0.107 R)
• M6: 2,706,824 km (0.109 R)
• M7: 3,312,695 km (0.067 R)
• M8: 3,856,184 km (0.084 R)
• M9: 4,725,797 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.8

Radius: 12.8

Gravity: 0.38 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 1.03 AU - 1.21 AU

Year: 778 Days

Day: 12.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 51,221,948 km

• M1: 159,172 km (0.079 R)
• M2: 728,093 km (0.086 R)
• M3: 1,622,987 km (0.088 R)
• M4: 2,941,094 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.7

Radius: 10.6

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.89 AU - 1.35 AU

Year: 778 Days

Day: 10.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,221,948 km

• M1: 132,095 km (0.068 R)
• M2: 594,652 km (0.106 R)
• M3: 978,370 km (0.062 R)
• M4: 1,491,940 km (0.09 R)
• M5: 1,823,748 km (0.057 R)
• M6: 3,154,869 km (0.107 R)
• M7: 3,998,901 km (0.112 R)
• M8: 4,809,422 km (0.084 R)
• M9: 5,277,364 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 90.2

Radius: 9.8

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.54 AU - 4.1 AU

Year: 4898 Days

Day: 14.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 51,221,948 km

• M1: 122,371 km (0.118 R)
• M2: 623,674 km (0.045 R)
• M3: 1,027,289 km (0.04 R)
• M4: 1,455,288 km (0.077 R)
• M5: 2,000,722 km (0.103 R)
• M6: 2,462,381 km (0.116 R)
• M7: 3,009,161 km (0.072 R)
• M8: 3,336,033 km (0.108 R)
• M9: 3,988,578 km (0.109 R)
• M10: 5,277,214 km (0.079 R)
• M11: 5,920,934 km (0.07 R)
• M12: 6,798,326 km (0.107 R)
• M13: 8,228,481 km (0.094 R)
• M14: 11,485,676 km (0.071 R)
• M15: 12,211,674 km (0.062 R)
• M16: 13,503,003 km (0.115 R)
• M17: 14,138,794 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 677.2

Radius: 10

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 4.65 AU - 5.15 AU

Year: 7115 Days

Day: 12.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 51,221,948 km

• M1: 125,064 km (0.073 R)
• M2: 441,763 km (0.044 R)
• M3: 879,336 km (0.06 R)
• M4: 1,390,811 km (0.066 R)
• M5: 1,879,548 km (0.085 R)
• M6: 2,238,882 km (0.049 R)
• M7: 5,275,569 km (0.11 R)
• M8: 5,739,921 km (0.075 R)
• M9: 6,265,009 km (0.105 R)
• M10: 6,893,769 km (0.098 R)
• M11: 8,650,198 km (0.079 R)
• M12: 11,030,150 km (0.106 R)
• M13: 13,874,006 km (0.117 R)
• M14: 15,683,691 km (0.106 R)
• M15: 17,240,706 km (0.072 R)
• M16: 18,685,372 km (0.111 R)
• M17: 24,000,585 km (0.1 R)
• M18: 26,776,224 km (0.115 R)
• M19: 28,709,926 km (0.073 R)
• M20: 30,833,767 km (0.042 R)
• M21: 33,060,232 km (0.029 R)
• M22: 34,959,826 km (0.118 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 531.4

Radius: 3.3

Gravity: 48.8 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 5.66 AU - 8.64 AU

Year: 12542 Days

Day: 24.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 51,221,948 km

• M1: 43,234 km (0.114 R)
• M2: 166,951 km (0.104 R)
• M3: 296,952 km (0.115 R)
• M4: 549,623 km (0.059 R)
• M5: 909,854 km (0.042 R)
• M6: 1,798,017 km (0.057 R)
• M7: 2,034,980 km (0.112 R)
• M8: 2,216,592 km (0.039 R)
• M9: 2,350,183 km (0.11 R)
• M10: 3,542,777 km (0.049 R)
• M11: 3,805,919 km (0.089 R)
• M12: 4,830,366 km (0.071 R)
• M13: 5,220,218 km (0.063 R)
• M14: 6,136,505 km (0.059 R)
• M15: 7,489,468 km (0.096 R)
• M16: 8,417,723 km (0.061 R)
• M17: 9,077,449 km (0.101 R)
• M18: 9,569,327 km (0.105 R)
• M19: 10,985,869 km (0.112 R)
• M20: 14,161,533 km (0.065 R)
• M21: 17,746,945 km (0.102 R)
• M22: 22,331,372 km (0.107 R)
• M23: 24,610,346 km (0.069 R)
• M24: 25,084,122 km (0.087 R)
• M25: 26,740,021 km (0.045 R)
• M26: 28,260,534 km (0.117 R)
• M27: 29,411,540 km (0.074 R)
• M28: 30,811,626 km (0.058 R)
• M29: 31,140,891 km (0.105 R)
• M30: 32,368,342 km (0.092 R)
• M31: 33,976,818 km (0.077 R)
• M32: 35,637,654 km (0.082 R)
• M33: 36,243,824 km (0.099 R)
• M34: 36,365,746 km (0.051 R)
• M35: 37,977,215 km (0.094 R)
• M36: 39,377,451 km (0.029 R)
• M37: 47,041,948 km (0.106 R)
• M38: 47,332,766 km (0.114 R)
• M39: 47,624,632 km (0.103 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: 236 - 12,923 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit