🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.8

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.55 AU - 0.73 AU

Year: 336 Days

Day: 23.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 18.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 427

Radius: 11.5

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.9 AU - 0.98 AU

Year: 598 Days

Day: 10.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,051,459 km

• M1: 143,315 km (0.055 R)
• M2: 639,680 km (0.108 R)
• M3: 1,013,226 km (0.09 R)
• M4: 1,559,109 km (0.114 R)
• M5: 2,205,521 km (0.119 R)
• M6: 2,642,198 km (0.055 R)
• M7: 3,394,076 km (0.047 R)
• M8: 3,966,588 km (0.075 R)
• M9: 5,159,631 km (0.104 R)
• M10: 5,883,235 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510

Radius: 9.3

Gravity: 5.9 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.87 AU - 1.11 AU

Year: 646 Days

Day: 6.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,051,459 km

• M1: 115,789 km (0.063 R)
• M2: 458,517 km (0.1 R)
• M3: 776,712 km (0.112 R)
• M4: 1,396,496 km (0.101 R)
• M5: 1,996,384 km (0.05 R)
• M6: 2,336,719 km (0.108 R)
• M7: 2,673,015 km (0.118 R)
• M8: 4,252,020 km (0.12 R)
• M9: 4,949,595 km (0.115 R)
• M10: 5,420,828 km (0.064 R)
• M11: 6,164,779 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 385.6

Radius: 13.6

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 3.71 AU - 3.73 AU

Year: 4707 Days

Day: 8.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,051,459 km

• M1: 169,195 km (0.113 R)
• M2: 685,607 km (0.054 R)
• M3: 1,463,666 km (0.102 R)
• M4: 1,918,293 km (0.073 R)
• M5: 2,717,595 km (0.072 R)
• M6: 3,213,362 km (0.074 R)
• M7: 3,649,440 km (0.08 R)
• M8: 4,549,570 km (0.088 R)
• M9: 5,178,031 km (0.119 R)
• M10: 6,200,233 km (0.12 R)
• M11: 7,385,048 km (0.12 R)
• M12: 8,608,011 km (0.07 R)
• M13: 12,207,336 km (0.095 R)
• M14: 13,136,488 km (0.085 R)
• M15: 19,856,275 km (0.034 R)
• M16: 23,734,450 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 533.1

Radius: 8.4

Gravity: 7.56 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 4.08 AU - 5.06 AU

Year: 6409 Days

Day: 6.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 52,051,459 km

• M1: 105,766 km (0.101 R)
• M2: 602,730 km (0.064 R)
• M3: 995,424 km (0.115 R)
• M4: 1,615,956 km (0.116 R)
• M5: 2,148,674 km (0.108 R)
• M6: 3,305,215 km (0.057 R)
• M7: 4,858,939 km (0.108 R)
• M8: 6,544,907 km (0.096 R)
• M9: 7,125,795 km (0.114 R)
• M10: 8,429,990 km (0.072 R)
• M11: 9,930,307 km (0.091 R)
• M12: 11,166,583 km (0.116 R)
• M13: 12,709,237 km (0.091 R)
• M14: 13,235,821 km (0.1 R)
• M15: 13,613,107 km (0.068 R)
• M16: 15,370,583 km (0.066 R)
• M17: 15,667,535 km (0.073 R)
• M18: 16,957,068 km (0.063 R)
• M19: 18,716,938 km (0.09 R)
• M20: 19,606,447 km (0.093 R)
• M21: 21,248,582 km (0.059 R)
• M22: 23,057,819 km (0.104 R)
• M23: 24,642,210 km (0.066 R)
• M24: 25,460,959 km (0.116 R)
• M25: 26,552,276 km (0.032 R)
• M26: 27,152,762 km (0.095 R)
• M27: 27,587,044 km (0.111 R)
• M28: 31,803,610 km (0.092 R)
• M29: 32,189,423 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.2

Radius: 14.6

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 3.73 AU - 5.73 AU

Year: 6748 Days

Day: 9.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,051,459 km

• M1: 181,612 km (0.074 R)
• M2: 889,509 km (0.114 R)
• M3: 1,855,612 km (0.091 R)
• M4: 4,073,101 km (0.098 R)
• M5: 6,947,924 km (0.055 R)
• M6: 7,725,533 km (0.082 R)
• M7: 8,320,933 km (0.066 R)
• M8: 13,199,020 km (0.098 R)
• M9: 17,609,165 km (0.037 R)
• M10: 20,455,714 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.1

Radius: 12.4

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 4.28 AU - 6.18 AU

Year: 7846 Days

Day: 15 Hours

Environment

Temp: -210 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 52,051,459 km

• M1: 154,235 km (0.114 R)
• M2: 580,290 km (0.11 R)
• M3: 1,136,794 km (0.107 R)
• M4: 1,714,541 km (0.113 R)
• M5: 2,271,644 km (0.081 R)
• M6: 2,786,709 km (0.077 R)
• M7: 3,658,117 km (0.076 R)
• M8: 4,905,165 km (0.054 R)
• M9: 7,974,015 km (0.111 R)
• M10: 8,731,729 km (0.062 R)
• M11: 9,536,715 km (0.108 R)
• M12: 10,786,156 km (0.074 R)
• M13: 12,581,181 km (0.099 R)
• M14: 17,438,175 km (0.116 R)
• M15: 19,976,103 km (0.117 R)
• M16: 23,844,255 km (0.092 R)
• M17: 27,240,725 km (0.109 R)
• M18: 30,240,611 km (0.078 R)
• M19: 30,845,735 km (0.098 R)
• M20: 34,537,660 km (0.107 R)
• M21: 35,088,031 km (0.101 R)
• M22: 37,233,115 km (0.058 R)
• M23: 40,187,074 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 906.9

Radius: 6.9

Gravity: 19.05 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 5.23 AU - 6.93 AU

Year: 9835 Days

Day: 23.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,051,459 km

• M1: 85,869 km (0.107 R)
• M2: 359,633 km (0.099 R)
• M3: 693,685 km (0.072 R)
• M4: 1,618,948 km (0.076 R)
• M5: 2,510,252 km (0.113 R)
• M6: 2,892,475 km (0.082 R)
• M7: 3,168,333 km (0.096 R)
• M8: 3,641,212 km (0.119 R)
• M9: 3,991,122 km (0.112 R)
• M10: 6,388,577 km (0.104 R)
• M11: 7,183,839 km (0.088 R)
• M12: 7,691,724 km (0.118 R)
• M13: 8,132,888 km (0.049 R)
• M14: 8,873,846 km (0.09 R)
• M15: 10,650,321 km (0.098 R)
• M16: 10,867,388 km (0.113 R)
• M17: 22,096,653 km (0.116 R)
• M18: 24,368,745 km (0.103 R)
• M19: 24,651,485 km (0.112 R)
• M20: 31,217,186 km (0.117 R)
• M21: 47,660,236 km (0.04 R)
• M22: 49,899,267 km (0.099 R)
• M23: 50,814,208 km (0.118 R)
• M24: 51,275,867 km (0.059 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: 510 - 14,332 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit