🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.65 AU - 0.69 AU

Year: 360 Days

Day: 44.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 1.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.1

Radius: 12.5

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.79 AU - 0.79 AU

Year: 461 Days

Day: 8.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,857,219 km

• M1: 156,479 km (0.102 R)
• M2: 572,361 km (0.05 R)
• M3: 1,395,449 km (0.107 R)
• M4: 1,821,354 km (0.109 R)
• M5: 2,446,075 km (0.113 R)
• M6: 2,836,525 km (0.096 R)
• M7: 3,532,754 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.4

Radius: 14.3

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.92 AU - 0.98 AU

Year: 607 Days

Day: 11.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,857,219 km

• M1: 177,872 km (0.056 R)
• M2: 641,176 km (0.1 R)
• M3: 1,161,179 km (0.082 R)
• M4: 2,011,792 km (0.117 R)
• M5: 2,477,042 km (0.065 R)
• M6: 2,939,598 km (0.05 R)
• M7: 3,389,140 km (0.095 R)
• M8: 4,137,279 km (0.068 R)
• M9: 4,931,793 km (0.074 R)
• M10: 5,423,222 km (0.037 R)
• M11: 5,964,766 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 554.9

Radius: 9.1

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.72 AU - 1.88 AU

Year: 1584 Days

Day: 13.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,857,219 km

• M1: 113,246 km (0.104 R)
• M2: 404,064 km (0.117 R)
• M3: 759,508 km (0.103 R)
• M4: 1,287,140 km (0.104 R)
• M5: 1,676,693 km (0.045 R)
• M6: 2,132,817 km (0.036 R)
• M7: 2,617,514 km (0.036 R)
• M8: 3,115,226 km (0.094 R)
• M9: 3,642,110 km (0.049 R)
• M10: 4,209,086 km (0.104 R)
• M11: 4,994,325 km (0.04 R)
• M12: 5,326,133 km (0.109 R)
• M13: 7,264,024 km (0.105 R)
• M14: 7,910,436 km (0.072 R)
• M15: 8,333,649 km (0.056 R)
• M16: 8,771,821 km (0.077 R)
• M17: 9,662,526 km (0.091 R)
• M18: 10,850,782 km (0.063 R)
• M19: 11,731,465 km (0.117 R)
• M20: 12,170,834 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148.7

Radius: 8.2

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 2.61 AU - 4.31 AU

Year: 4222 Days

Day: 14.4 Hours

Environment

Temp: -204 °C

Axial Tilt: 73.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 35,857,219 km

• M1: 102,026 km (0.117 R)
• M2: 591,211 km (0.077 R)
• M3: 1,156,392 km (0.11 R)
• M4: 1,764,058 km (0.063 R)
• M5: 2,328,341 km (0.059 R)
• M6: 2,638,906 km (0.077 R)
• M7: 3,294,444 km (0.051 R)
• M8: 5,463,763 km (0.083 R)
• M9: 7,688,732 km (0.12 R)
• M10: 13,398,135 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.9

Radius: 11.7

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 4.19 AU - 4.79 AU

Year: 6241 Days

Day: 7.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,857,219 km

• M1: 145,858 km (0.04 R)
• M2: 545,883 km (0.1 R)
• M3: 1,837,810 km (0.081 R)
• M4: 4,148,648 km (0.093 R)
• M5: 5,014,969 km (0.113 R)
• M6: 6,586,196 km (0.073 R)
• M7: 7,689,181 km (0.105 R)
• M8: 9,204,458 km (0.111 R)
• M9: 10,168,018 km (0.102 R)
• M10: 10,627,732 km (0.039 R)
• M11: 14,244,560 km (0.058 R)
• M12: 19,509,208 km (0.116 R)
• M13: 26,804,049 km (0.119 R)
• M14: 27,328,988 km (0.113 R)
• M15: 28,580,673 km (0.035 R)
• M16: 31,681,837 km (0.088 R)
• M17: 32,763,579 km (0.07 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 257.8

Radius: 7.5

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 5.53 AU - 7.21 AU

Year: 10547 Days

Day: 22.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 98.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 35,857,219 km

• M1: 93,349 km (0.102 R)
• M2: 358,436 km (0.105 R)
• M3: 781,649 km (0.119 R)
• M4: 1,128,118 km (0.074 R)
• M5: 1,653,056 km (0.089 R)
• M6: 1,890,169 km (0.027 R)
• M7: 2,182,334 km (0.088 R)
• M8: 3,077,827 km (0.083 R)
• M9: 3,806,368 km (0.099 R)
• M10: 4,978,318 km (0.118 R)
• M11: 6,441,535 km (0.029 R)
• M12: 6,716,496 km (0.099 R)
• M13: 8,658,126 km (0.095 R)
• M14: 10,189,410 km (0.091 R)
• M15: 10,469,009 km (0.113 R)
• M16: 12,360,374 km (0.045 R)
• M17: 13,442,117 km (0.072 R)
• M18: 14,063,247 km (0.062 R)
• M19: 15,917,064 km (0.062 R)
• M20: 16,805,376 km (0.102 R)
• M21: 19,956,954 km (0.11 R)
• M22: 21,979,368 km (0.074 R)
• M23: 26,602,092 km (0.101 R)
• M24: 29,233,070 km (0.093 R)
• M25: 31,734,944 km (0.086 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: 352 - 14,387 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit