🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.55

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.45 AU - 0.75 AU

Year: 305 Days

Day: 18.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 2.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 51,859,235 km

• M1: 105,317 km (0.108 R)
• M2: 610,060 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.1

Radius: 13.8

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.65 AU - 0.81 AU

Year: 409 Days

Day: 13.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 51,859,235 km

• M1: 171,589 km (0.106 R)
• M2: 644,168 km (0.082 R)
• M3: 1,327,681 km (0.081 R)
• M4: 1,879,248 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.9

Radius: 9.9

Gravity: 6.41 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.89 AU - 1.03 AU

Year: 617 Days

Day: 11.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,859,235 km

• M1: 123,119 km (0.108 R)
• M2: 440,267 km (0.07 R)
• M3: 774,468 km (0.049 R)
• M4: 1,082,490 km (0.115 R)
• M5: 1,525,001 km (0.12 R)
• M6: 1,851,423 km (0.088 R)
• M7: 2,926,583 km (0.103 R)
• M8: 4,450,985 km (0.093 R)
• M9: 5,299,056 km (0.09 R)
• M10: 5,725,260 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 197.8

Radius: 8.9

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.02 AU - 1.04 AU

Year: 686 Days

Day: 14.6 Hours

Environment

Temp: -151 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,859,235 km

• M1: 110,702 km (0.105 R)
• M2: 501,302 km (0.103 R)
• M3: 947,403 km (0.099 R)
• M4: 1,227,750 km (0.05 R)
• M5: 1,611,618 km (0.107 R)
• M6: 2,558,124 km (0.115 R)
• M7: 2,986,721 km (0.046 R)
• M8: 3,313,742 km (0.093 R)
• M9: 3,640,315 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.6

Radius: 8.8

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.49 AU - 1.82 AU

Year: 1390 Days

Day: 6.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 51,859,235 km

• M1: 109,506 km (0.067 R)
• M2: 393,742 km (0.072 R)
• M3: 692,937 km (0.034 R)
• M4: 1,023,100 km (0.07 R)
• M5: 1,442,273 km (0.031 R)
• M6: 2,036,177 km (0.062 R)
• M7: 2,566,351 km (0.117 R)
• M8: 2,959,794 km (0.07 R)
• M9: 3,303,271 km (0.067 R)
• M10: 5,030,976 km (0.092 R)
• M11: 5,649,713 km (0.054 R)
• M12: 6,318,266 km (0.099 R)
• M13: 6,600,108 km (0.063 R)
• M14: 7,290,652 km (0.076 R)
• M15: 7,574,739 km (0.052 R)
• M16: 8,670,992 km (0.1 R)
• M17: 9,347,324 km (0.094 R)
• M18: 9,744,955 km (0.106 R)
• M19: 10,411,114 km (0.081 R)
• M20: 11,658,162 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.3

Radius: 10.2

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.39 AU - 2.23 AU

Year: 1597 Days

Day: 9.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 51,859,235 km

• M1: 126,859 km (0.115 R)
• M2: 454,927 km (0.114 R)
• M3: 1,012,179 km (0.079 R)
• M4: 1,349,672 km (0.04 R)
• M5: 2,667,928 km (0.072 R)
• M6: 3,091,590 km (0.106 R)
• M7: 3,749,371 km (0.083 R)
• M8: 4,782,494 km (0.09 R)
• M9: 5,122,530 km (0.072 R)
• M10: 5,971,349 km (0.102 R)
• M11: 6,391,719 km (0.032 R)
• M12: 8,734,421 km (0.095 R)
• M13: 9,082,984 km (0.093 R)
• M14: 9,774,126 km (0.058 R)
• M15: 10,894,315 km (0.094 R)
• M16: 11,674,618 km (0.1 R)
• M17: 13,388,112 km (0.072 R)
• M18: 14,196,389 km (0.025 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 817.8

Radius: 8

Gravity: 12.78 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 5.14 AU - 7.4 AU

Year: 10299 Days

Day: 23.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 51,859,235 km

• M1: 99,483 km (0.087 R)
• M2: 585,676 km (0.111 R)
• M3: 937,679 km (0.073 R)
• M4: 1,497,026 km (0.106 R)
• M5: 1,993,541 km (0.088 R)
• M6: 2,434,855 km (0.12 R)
• M7: 2,850,887 km (0.06 R)
• M8: 3,169,829 km (0.11 R)
• M9: 3,719,302 km (0.083 R)
• M10: 4,272,515 km (0.117 R)
• M11: 5,787,942 km (0.1 R)
• M12: 6,377,357 km (0.11 R)
• M13: 7,005,967 km (0.104 R)
• M14: 7,761,736 km (0.12 R)
• M15: 8,852,753 km (0.089 R)
• M16: 9,888,270 km (0.108 R)
• M17: 11,732,811 km (0.088 R)
• M18: 13,478,020 km (0.091 R)
• M19: 14,053,224 km (0.056 R)
• M20: 20,904,208 km (0.026 R)
• M21: 26,501,263 km (0.116 R)
• M22: 28,952,574 km (0.077 R)
• M23: 35,132,312 km (0.119 R)
• M24: 39,232,790 km (0.064 R)
• M25: 39,620,697 km (0.064 R)
• M26: 41,732,869 km (0.074 R)
• M27: 47,047,633 km (0.101 R)
• M28: 47,485,506 km (0.033 R)
• M29: 47,926,071 km (0.055 R)
• M30: 48,964,580 km (0.106 R)
• M31: 50,933,138 km (0.084 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: 156 - 19,514 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit