🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.82

Radius: 0.92

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.53 AU - 0.65 AU

Year: 162 Days

Day: 30.8 Hours

Environment

Temp: 158 °C

Axial Tilt: 49.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 87,293,830 km

• M1: 116,088 km (0.087 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.51

Radius: 1.45

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.68 AU - 1.04 AU

Year: 284 Days

Day: 35.5 Hours

Environment

Temp: 153 °C

Axial Tilt: 1.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.84 AU - 1.14 AU

Year: 351 Days

Day: 37.8 Hours

Environment

Temp: 116 °C

Axial Tilt: 1.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 87,293,830 km

• M1: 138,827 km (0.067 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.92 AU - 1.16 AU

Year: 378 Days

Day: 35 Hours

Environment

Temp: 48 °C

Axial Tilt: 26.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1.89 AU - 2.47 AU

Year: 1147 Days

Day: 44 Hours

Environment

Temp: -66 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 4.67 AU - 5.67 AU

Year: 4190 Days

Day: 19.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 15.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 11.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.5

Radius: 12.9

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 9.85 AU - 13.63 AU

Year: 14338 Days

Day: 7.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 87,293,830 km

• M1: 160,519 km (0.111 R)
• M2: 621,579 km (0.086 R)
• M3: 1,365,230 km (0.096 R)
• M4: 1,832,724 km (0.111 R)
• M5: 2,249,054 km (0.075 R)
• M6: 3,874,884 km (0.049 R)
• M7: 4,486,739 km (0.064 R)
• M8: 6,179,888 km (0.032 R)
• M9: 8,265,582 km (0.111 R)
• M10: 9,283,146 km (0.083 R)
• M11: 9,798,511 km (0.073 R)
• M12: 10,937,998 km (0.104 R)
• M13: 12,724,944 km (0.072 R)
• M14: 14,449,509 km (0.115 R)
• M15: 16,392,635 km (0.058 R)
• M16: 19,171,715 km (0.098 R)
• M17: 19,855,228 km (0.116 R)
• M18: 20,712,424 km (0.073 R)
• M19: 23,006,208 km (0.103 R)
• M20: 24,214,360 km (0.117 R)
• M21: 24,744,984 km (0.088 R)
• M22: 28,093,134 km (0.118 R)
• M23: 30,078,148 km (0.066 R)
• M24: 38,237,814 km (0.051 R)
• M25: 41,549,013 km (0.112 R)
• M26: 42,565,681 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 137

Radius: 4.2

Gravity: 7.77 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 11.38 AU - 18.52 AU

Year: 20604 Days

Day: 24.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 87,293,830 km

• M1: 52,958 km (0.103 R)
• M2: 303,684 km (0.066 R)
• M3: 2,293,186 km (0.032 R)
• M4: 3,131,383 km (0.071 R)
• M5: 3,784,078 km (0.05 R)
• M6: 8,360,127 km (0.119 R)
• M7: 10,805,005 km (0.057 R)
• M8: 12,274,356 km (0.098 R)
• M9: 12,560,387 km (0.059 R)
• M10: 17,761,456 km (0.045 R)
• M11: 21,484,199 km (0.113 R)
• M12: 21,816,007 km (0.072 R)
• M13: 29,191,631 km (0.108 R)
• M14: 34,896,845 km (0.074 R)
• M15: 42,592,159 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 527.9

Radius: 3.2

Gravity: 51.55 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 16.8 AU - 19.88 AU

Year: 27996 Days

Day: 19.8 Hours

Environment

Temp: -205 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 87,293,830 km

• M1: 39,943 km (0.118 R)
• M2: 231,428 km (0.075 R)
• M3: 460,911 km (0.058 R)
• M4: 574,605 km (0.116 R)
• M5: 1,020,407 km (0.119 R)
• M6: 1,231,041 km (0.113 R)
• M7: 2,443,083 km (0.114 R)
• M8: 3,622,812 km (0.11 R)
• M9: 6,231,200 km (0.079 R)
• M10: 6,504,216 km (0.096 R)
• M11: 6,832,883 km (0.106 R)
• M12: 9,569,327 km (0.081 R)
• M13: 9,871,515 km (0.056 R)
• M14: 12,521,940 km (0.081 R)
• M15: 16,113,785 km (0.117 R)
• M16: 16,976,217 km (0.085 R)
• M17: 23,020,270 km (0.092 R)
• M18: 25,011,118 km (0.04 R)
• M19: 27,596,469 km (0.12 R)
• M20: 36,703,090 km (0.103 R)
• M21: 38,950,199 km (0.104 R)
• M22: 39,874,116 km (0.034 R)
• M23: 49,212,613 km (0.066 R)
• M24: 55,732,088 km (0.087 R)
• M25: 56,511,942 km (0.08 R)
• M26: 56,707,915 km (0.097 R)
• M27: 59,703,912 km (0.111 R)
• M28: 67,541,344 km (0.114 R)
• M29: 74,142,799 km (0.11 R)

Kuiper Belt

Range: 30.8 - 45.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 402 - 12,637 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit