🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.64 AU - 0.66 AU

Year: 344 Days

Day: 20.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 43.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.4

Radius: 11

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.84 AU - 0.92 AU

Year: 542 Days

Day: 9.8 Hours

Environment

Temp: -149 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 57,642,006 km

• M1: 137,032 km (0.089 R)
• M2: 767,138 km (0.073 R)
• M3: 1,232,387 km (0.069 R)
• M4: 3,027,711 km (0.051 R)
• M5: 3,486,827 km (0.035 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 410.2

Radius: 13.9

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.76 AU - 1.24 AU

Year: 656 Days

Day: 6.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,642,006 km

• M1: 173,085 km (0.087 R)
• M2: 717,920 km (0.069 R)
• M3: 1,383,032 km (0.092 R)
• M4: 1,889,870 km (0.058 R)
• M5: 2,348,836 km (0.028 R)
• M6: 2,959,644 km (0.096 R)
• M7: 3,412,327 km (0.115 R)
• M8: 4,088,659 km (0.109 R)
• M9: 4,578,144 km (0.077 R)
• M10: 5,090,816 km (0.071 R)
• M11: 6,325,297 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334.5

Radius: 14

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.42 AU - 1.54 AU

Year: 1181 Days

Day: 8.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 57,642,006 km

• M1: 174,581 km (0.083 R)
• M2: 736,022 km (0.094 R)
• M3: 1,531,284 km (0.077 R)
• M4: 2,042,011 km (0.1 R)
• M5: 2,655,811 km (0.09 R)
• M6: 3,391,085 km (0.093 R)
• M7: 4,419,869 km (0.087 R)
• M8: 5,070,171 km (0.092 R)
• M9: 5,570,576 km (0.102 R)
• M10: 7,114,127 km (0.066 R)
• M11: 7,600,320 km (0.092 R)
• M12: 8,460,208 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.3

Radius: 11

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2.77 AU - 4.07 AU

Year: 4149 Days

Day: 6.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,642,006 km

• M1: 152,739 km (0.073 R)
• M2: 625,170 km (0.097 R)
• M3: 1,159,832 km (0.074 R)
• M4: 1,910,963 km (0.095 R)
• M5: 2,747,215 km (0.115 R)
• M6: 3,900,016 km (0.113 R)
• M7: 6,660,097 km (0.1 R)
• M8: 7,348,995 km (0.118 R)
• M9: 8,561,486 km (0.068 R)
• M10: 13,989,046 km (0.106 R)
• M11: 14,721,029 km (0.092 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 590.1

Radius: 7.7

Gravity: 9.95 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 7.35 AU - 8.19 AU

Year: 14208 Days

Day: 24.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 57,642,006 km

• M1: 95,892 km (0.045 R)
• M2: 606,171 km (0.045 R)
• M3: 952,490 km (0.053 R)
• M4: 1,279,511 km (0.067 R)
• M5: 1,588,131 km (0.092 R)
• M6: 1,843,495 km (0.117 R)
• M7: 2,438,296 km (0.118 R)
• M8: 4,420,467 km (0.118 R)
• M9: 5,552,175 km (0.069 R)
• M10: 7,819,481 km (0.091 R)
• M11: 10,474,993 km (0.112 R)
• M12: 11,854,584 km (0.095 R)
• M13: 14,830,385 km (0.107 R)
• M14: 15,323,011 km (0.101 R)
• M15: 18,030,882 km (0.115 R)
• M16: 20,089,049 km (0.073 R)
• M17: 21,130,400 km (0.119 R)
• M18: 24,373,083 km (0.103 R)
• M19: 26,367,522 km (0.107 R)
• M20: 28,792,803 km (0.089 R)
• M21: 33,238,403 km (0.072 R)
• M22: 34,081,985 km (0.057 R)
• M23: 40,391,126 km (0.072 R)
• M24: 43,747,504 km (0.08 R)
• M25: 49,123,453 km (0.089 R)
• M26: 53,105,449 km (0.046 R)
• M27: 54,092,196 km (0.119 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: 215 - 15,249 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit