🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.97 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.15

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.69 AU - 2.19 AU

Year: 941 Days

Day: 39.9 Hours

Environment

Temp: -47 °C

Axial Tilt: 22 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 3.42 AU - 4.96 AU

Year: 2987 Days

Day: 34 Hours

Environment

Temp: -107 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 91,566,081 km

• M1: 2,528,054 km (0.108 R)
• M2: 2,725,374 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 7.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 189.3

Radius: 11.1

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 6.05 AU - 8.81 AU

Year: 7053 Days

Day: 8.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 91,566,081 km

• M1: 141,669 km (0.105 R)
• M2: 5,478,274 km (0.102 R)
• M3: 5,832,372 km (0.08 R)
• M4: 7,307,407 km (0.105 R)
• M5: 9,167,956 km (0.12 R)
• M6: 10,269,295 km (0.079 R)
• M7: 10,809,643 km (0.096 R)
• M8: 12,083,618 km (0.113 R)
• M9: 15,245,669 km (0.097 R)
• M10: 19,608,092 km (0.05 R)
• M11: 23,291,640 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.4

Radius: 12.8

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 6.83 AU - 8.37 AU

Year: 7296 Days

Day: 10.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 91,566,081 km

• M1: 159,322 km (0.094 R)
• M2: 900,430 km (0.098 R)
• M3: 1,317,808 km (0.08 R)
• M4: 1,868,029 km (0.091 R)
• M5: 8,424,454 km (0.03 R)
• M6: 9,110,810 km (0.058 R)
• M7: 9,875,404 km (0.075 R)
• M8: 12,719,858 km (0.073 R)
• M9: 13,986,803 km (0.115 R)
• M10: 17,128,059 km (0.107 R)
• M11: 18,292,977 km (0.059 R)
• M12: 19,379,357 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 11.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 20.2

Radius: 11.4

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 9.5 AU - 13.94 AU

Year: 13973 Days

Day: 6.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 91,566,081 km

• M1: 282,142 km (0.119 R)
• M2: 2,250,102 km (0.092 R)
• M3: 4,128,901 km (0.105 R)
• M4: 4,712,483 km (0.029 R)
• M5: 7,554,393 km (0.078 R)
• M6: 8,958,818 km (0.067 R)
• M7: 10,084,692 km (0.084 R)
• M8: 12,658,373 km (0.109 R)
• M9: 15,543,668 km (0.084 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 315.6

Radius: 6.9

Gravity: 6.63 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 13.02 AU - 15.46 AU

Year: 18714 Days

Day: 21.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 91,566,081 km

• M1: 86,168 km (0.067 R)
• M2: 391,797 km (0.102 R)
• M3: 833,111 km (0.034 R)
• M4: 1,118,693 km (0.069 R)
• M5: 2,683,038 km (0.069 R)
• M6: 2,975,502 km (0.104 R)
• M7: 4,097,934 km (0.08 R)
• M8: 4,425,404 km (0.081 R)
• M9: 5,032,323 km (0.091 R)
• M10: 5,621,290 km (0.113 R)
• M11: 13,335,005 km (0.109 R)
• M12: 14,121,889 km (0.099 R)
• M13: 14,800,914 km (0.103 R)
• M14: 26,316,509 km (0.089 R)
• M15: 26,724,313 km (0.111 R)
• M16: 28,078,473 km (0.088 R)
• M17: 28,718,752 km (0.118 R)
• M18: 30,473,535 km (0.087 R)
• M19: 34,680,826 km (0.114 R)
• M20: 41,280,784 km (0.089 R)
• M21: 47,007,989 km (0.028 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 974

Radius: 3.9

Gravity: 64.04 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 13.08 AU - 18.78 AU

Year: 22142 Days

Day: 17 Hours

Environment

Temp: -194 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 91,566,081 km

• M1: 50,564 km (0.114 R)
• M2: 173,683 km (0.028 R)
• M3: 423,362 km (0.083 R)
• M4: 837,000 km (0.117 R)
• M5: 1,009,786 km (0.081 R)
• M6: 3,645,551 km (0.101 R)
• M7: 4,318,292 km (0.112 R)
• M8: 4,462,205 km (0.068 R)
• M9: 4,991,333 km (0.108 R)
• M10: 6,877,463 km (0.106 R)
• M11: 7,324,761 km (0.112 R)
• M12: 8,167,595 km (0.101 R)
• M13: 12,695,175 km (0.051 R)
• M14: 14,863,296 km (0.088 R)
• M15: 16,034,498 km (0.113 R)
• M16: 16,819,139 km (0.108 R)
• M17: 21,336,247 km (0.103 R)
• M18: 23,592,332 km (0.085 R)
• M19: 26,240,065 km (0.091 R)
• M20: 27,945,032 km (0.119 R)
• M21: 31,573,827 km (0.086 R)
• M22: 33,081,176 km (0.114 R)
• M23: 34,779,710 km (0.049 R)
• M24: 35,068,434 km (0.118 R)
• M25: 37,586,465 km (0.102 R)
• M26: 44,488,312 km (0.114 R)
• M27: 49,227,124 km (0.11 R)
• M28: 53,137,313 km (0.12 R)
• M29: 59,074,853 km (0.076 R)
• M30: 68,559,807 km (0.109 R)
• M31: 80,512,377 km (0.105 R)
• M32: 84,091,805 km (0.088 R)
• M33: 90,744,872 km (0.112 R)
• M34: 91,018,037 km (0.12 R)

Kuiper Belt

Range: 31.5 - 61.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 333 - 14,380 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit