🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 5

Radius: 1.9

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.49 AU - 0.75 AU

Year: 310 Days

Day: 35.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 45.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.9

Radius: 8

Gravity: 5.83 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.6 AU - 0.92 AU

Year: 421 Days

Day: 6.1 Hours

Environment

Temp: -145 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 13,267,539 km

• M1: 99,632 km (0.068 R)
• M2: 428,598 km (0.091 R)
• M3: 722,109 km (0.116 R)
• M4: 976,874 km (0.091 R)
• M5: 1,986,959 km (0.077 R)
• M6: 2,369,331 km (0.108 R)
• M7: 2,694,856 km (0.044 R)
• M8: 2,998,989 km (0.098 R)
• M9: 3,314,939 km (0.101 R)
• M10: 4,229,431 km (0.099 R)
• M11: 4,573,506 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.9

Radius: 11.4

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.75 AU - 0.93 AU

Year: 489 Days

Day: 5.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 13,267,539 km

• M1: 141,819 km (0.106 R)
• M2: 539,001 km (0.083 R)
• M3: 1,021,005 km (0.095 R)
• M4: 2,013,737 km (0.107 R)
• M5: 2,810,645 km (0.116 R)
• M6: 3,643,157 km (0.116 R)
• M7: 4,276,255 km (0.097 R)
• M8: 4,673,886 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127.1

Radius: 11.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.89 AU - 1.09 AU

Year: 626 Days

Day: 9.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 13,267,539 km

• M1: 146,905 km (0.11 R)
• M2: 705,803 km (0.11 R)
• M3: 1,218,175 km (0.095 R)
• M4: 2,123,243 km (0.117 R)
• M5: 3,082,913 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.8

Radius: 14.8

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.06 AU - 1.62 AU

Year: 986 Days

Day: 7 Hours

Environment

Temp: -177 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 13,267,539 km

• M1: 184,155 km (0.075 R)
• M2: 756,965 km (0.12 R)
• M3: 1,564,046 km (0.027 R)
• M4: 2,096,614 km (0.073 R)
• M5: 2,776,387 km (0.118 R)
• M6: 4,129,948 km (0.112 R)
• M7: 5,070,470 km (0.099 R)
• M8: 5,845,088 km (0.103 R)
• M9: 6,419,544 km (0.112 R)
• M10: 7,055,933 km (0.116 R)
• M11: 7,708,479 km (0.097 R)
• M12: 8,183,602 km (0.098 R)
• M13: 8,650,198 km (0.025 R)
• M14: 9,339,395 km (0.092 R)
• M15: 10,034,128 km (0.037 R)
• M16: 11,391,728 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 97.7

Radius: 14.4

Gravity: 0.47 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.62 AU - 2.38 AU

Year: 1798 Days

Day: 13.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 13,267,539 km

• M1: 179,218 km (0.098 R)
• M2: 880,383 km (0.086 R)
• M3: 1,346,979 km (0.074 R)
• M4: 2,047,097 km (0.105 R)
• M5: 2,610,034 km (0.106 R)
• M6: 5,140,332 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520.9

Radius: 13.9

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.72 AU - 2.48 AU

Year: 1935 Days

Day: 13.6 Hours

Environment

Temp: -189 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 13,267,539 km

• M1: 172,935 km (0.082 R)
• M2: 633,547 km (0.112 R)
• M3: 1,126,622 km (0.076 R)
• M4: 1,822,850 km (0.12 R)
• M5: 2,475,695 km (0.114 R)
• M6: 3,296,987 km (0.028 R)
• M7: 4,660,722 km (0.082 R)
• M8: 5,305,788 km (0.093 R)
• M9: 7,578,179 km (0.1 R)
• M10: 9,762,907 km (0.064 R)
• M11: 11,072,038 km (0.103 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468

Radius: 11.3

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.39 AU - 2.95 AU

Year: 2774 Days

Day: 13.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 13,267,539 km

• M1: 140,622 km (0.049 R)
• M2: 621,579 km (0.069 R)
• M3: 1,386,473 km (0.108 R)
• M4: 1,897,350 km (0.097 R)
• M5: 2,407,778 km (0.094 R)
• M6: 2,823,061 km (0.103 R)
• M7: 3,269,312 km (0.081 R)
• M8: 3,855,586 km (0.086 R)
• M9: 4,745,544 km (0.059 R)
• M10: 6,199,186 km (0.117 R)
• M11: 6,571,086 km (0.067 R)
• M12: 9,126,069 km (0.102 R)
• M13: 10,035,624 km (0.119 R)
• M14: 10,889,678 km (0.102 R)
• M15: 11,354,179 km (0.104 R)
• M16: 11,711,269 km (0.072 R)
• M17: 12,615,738 km (0.117 R)
• M18: 13,433,739 km (0.073 R)
• M19: 14,470,901 km (0.09 R)
• M20: 15,367,142 km (0.095 R)
• M21: 15,902,852 km (0.027 R)
• M22: 16,653,385 km (0.065 R)
• M23: 17,690,397 km (0.098 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.3

Radius: 11.7

Gravity: 4.98 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 2.71 AU - 3.61 AU

Year: 3572 Days

Day: 13.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 13,267,539 km

• M1: 145,559 km (0.118 R)
• M2: 510,727 km (0.091 R)
• M3: 900,878 km (0.068 R)
• M4: 1,735,784 km (0.093 R)
• M5: 3,321,222 km (0.054 R)
• M6: 4,440,514 km (0.096 R)
• M7: 5,062,242 km (0.052 R)
• M8: 5,687,113 km (0.083 R)
• M9: 6,480,281 km (0.059 R)
• M10: 7,773,105 km (0.105 R)
• M11: 9,006,839 km (0.056 R)
• M12: 11,117,665 km (0.097 R)
• M13: 11,859,521 km (0.101 R)
• M14: 13,588,274 km (0.077 R)
• M15: 13,983,212 km (0.101 R)
• M16: 15,855,878 km (0.099 R)
• M17: 16,683,603 km (0.053 R)
• M18: 17,656,139 km (0.108 R)
• M19: 18,848,285 km (0.115 R)
• M20: 21,194,129 km (0.095 R)
• M21: 21,658,929 km (0.105 R)
• M22: 23,374,667 km (0.062 R)

Planet 10 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81

Radius: 11.7

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.88 AU - 4.2 AU

Year: 4235 Days

Day: 7.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 13,267,539 km

• M1: 175,628 km (0.088 R)
• M2: 579,542 km (0.095 R)
• M3: 1,651,860 km (0.06 R)
• M4: 2,200,285 km (0.116 R)
• M5: 2,772,497 km (0.114 R)
• M6: 3,303,271 km (0.107 R)
• M7: 3,799,337 km (0.089 R)
• M8: 5,002,553 km (0.091 R)
• M9: 5,747,999 km (0.114 R)
• M10: 7,170,824 km (0.079 R)
• M11: 9,936,440 km (0.112 R)
• M12: 11,254,547 km (0.028 R)
• M13: 12,158,717 km (0.087 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 234 - 10,906 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit