🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.77 AU - 0.77 AU

Year: 251 Days

Day: 39.6 Hours

Environment

Temp: 174 °C

Axial Tilt: 13.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 70,452,182 km

• M1: 597,195 km (0.103 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.21 AU - 1.81 AU

Year: 688 Days

Day: 37.3 Hours

Environment

Temp: -39 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.27 AU - 1.93 AU

Year: 751 Days

Day: 38.8 Hours

Environment

Temp: -46 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.55

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.75 AU - 1.93 AU

Year: 926 Days

Day: 24.8 Hours

Environment

Temp: -58 °C

Axial Tilt: 19.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.39

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.94 AU - 2.38 AU

Year: 1177 Days

Day: 20.9 Hours

Environment

Temp: -81 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.53 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.2

Radius: 9.5

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 4.49 AU - 5.31 AU

Year: 4023 Days

Day: 8 Hours

Environment

Temp: -138 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 70,452,182 km

• M1: 118,182 km (0.108 R)
• M2: 443,558 km (0.107 R)
• M3: 1,281,755 km (0.113 R)
• M4: 2,315,177 km (0.116 R)
• M5: 3,338,426 km (0.101 R)
• M6: 7,155,865 km (0.12 R)
• M7: 9,287,634 km (0.064 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 310.9

Radius: 5

Gravity: 12.44 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 11.43 AU - 17.73 AU

Year: 20646 Days

Day: 20.1 Hours

Environment

Temp: -200 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 70,452,182 km

• M1: 62,233 km (0.093 R)
• M2: 365,767 km (0.066 R)
• M3: 525,388 km (0.051 R)
• M4: 732,730 km (0.062 R)
• M5: 1,159,982 km (0.09 R)
• M6: 1,400,236 km (0.112 R)
• M7: 1,578,407 km (0.105 R)
• M8: 1,909,318 km (0.108 R)
• M9: 2,533,590 km (0.094 R)
• M10: 4,905,913 km (0.104 R)
• M11: 5,144,671 km (0.027 R)
• M12: 6,868,936 km (0.088 R)
• M13: 8,211,876 km (0.096 R)
• M14: 8,403,212 km (0.103 R)
• M15: 9,934,795 km (0.096 R)
• M16: 10,428,468 km (0.052 R)
• M17: 10,823,406 km (0.032 R)
• M18: 11,169,875 km (0.087 R)
• M19: 11,885,102 km (0.053 R)
• M20: 13,209,193 km (0.102 R)
• M21: 14,420,038 km (0.111 R)
• M22: 17,060,141 km (0.108 R)
• M23: 17,372,053 km (0.113 R)
• M24: 19,072,083 km (0.075 R)
• M25: 32,839,276 km (0.115 R)
• M26: 38,544,340 km (0.113 R)
• M27: 43,124,279 km (0.078 R)
• M28: 46,220,057 km (0.108 R)
• M29: 55,533,422 km (0.03 R)
• M30: 56,218,281 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 228.4

Radius: 6.3

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 14.35 AU - 23.77 AU

Year: 30859 Days

Day: 23.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 70,452,182 km

• M1: 136,732 km (0.066 R)
• M2: 584,329 km (0.111 R)
• M3: 1,402,929 km (0.086 R)
• M4: 2,653,567 km (0.107 R)
• M5: 3,819,234 km (0.072 R)
• M6: 4,285,081 km (0.11 R)
• M7: 4,684,358 km (0.11 R)
• M8: 5,108,169 km (0.096 R)
• M9: 6,321,707 km (0.111 R)
• M10: 7,291,849 km (0.06 R)
• M11: 7,716,109 km (0.109 R)
• M12: 9,579,200 km (0.086 R)
• M13: 10,674,406 km (0.11 R)
• M14: 13,809,080 km (0.049 R)
• M15: 15,662,299 km (0.079 R)
• M16: 18,699,883 km (0.088 R)
• M17: 18,962,129 km (0.044 R)
• M18: 25,372,547 km (0.111 R)
• M19: 31,584,449 km (0.093 R)
• M20: 32,331,690 km (0.069 R)
• M21: 39,307,589 km (0.091 R)
• M22: 48,858,216 km (0.106 R)
• M23: 49,356,077 km (0.083 R)
• M24: 51,039,652 km (0.085 R)
• M25: 57,233,602 km (0.081 R)
• M26: 57,786,665 km (0.09 R)
• M27: 60,988,509 km (0.096 R)
• M28: 61,952,218 km (0.105 R)
• M29: 62,535,351 km (0.06 R)
• M30: 64,306,589 km (0.081 R)
• M31: 64,505,555 km (0.109 R)
• M32: 66,313,595 km (0.099 R)
• M33: 68,776,723 km (0.096 R)
• M34: 70,030,802 km (0.118 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 430 - 13,391 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit