🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.46 AU - 0.7 AU

Year: 161 Days

Day: 17.7 Hours

Environment

Temp: 159 °C

Axial Tilt: 6.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.94 AU - 1.38 AU

Year: 454 Days

Day: 24.7 Hours

Environment

Temp: 1 °C

Axial Tilt: 19.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.4 AU - 1.52 AU

Year: 641 Days

Day: 20.3 Hours

Environment

Temp: -37 °C

Axial Tilt: 3.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,449,262 km

• M1: 68,067 km (0.058 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.37 AU - 2.09 AU

Year: 827 Days

Day: 22.4 Hours

Environment

Temp: -56 °C

Axial Tilt: 26.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,449,262 km

• M1: 166,054 km (0.095 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.17 AU - 3.29 AU

Year: 2110 Days

Day: 35.7 Hours

Environment

Temp: -107 °C

Axial Tilt: 7.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,449,262 km

• M1: 1,142,180 km (0.057 R)

Asteroid Belt

Center: 4.37 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100

Radius: 8.5

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.74 AU - 6.26 AU

Year: 4688 Days

Day: 10.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 89,449,262 km

• M1: 105,915 km (0.088 R)
• M2: 380,876 km (0.095 R)
• M3: 664,215 km (0.033 R)
• M4: 2,848,194 km (0.066 R)
• M5: 3,780,637 km (0.034 R)
• M6: 4,183,205 km (0.119 R)
• M7: 4,695,578 km (0.117 R)
• M8: 9,199,072 km (0.061 R)
• M9: 11,730,418 km (0.095 R)
• M10: 14,560,211 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.6

Radius: 8.6

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 10.44 AU - 10.94 AU

Year: 12703 Days

Day: 7.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 89,449,262 km

• M1: 106,962 km (0.038 R)
• M2: 509,231 km (0.055 R)
• M3: 828,922 km (0.12 R)
• M4: 1,105,977 km (0.05 R)
• M5: 2,428,422 km (0.104 R)
• M6: 2,699,494 km (0.097 R)
• M7: 4,296,451 km (0.111 R)
• M8: 5,236,673 km (0.091 R)
• M9: 6,649,177 km (0.12 R)
• M10: 7,111,284 km (0.048 R)
• M11: 8,585,571 km (0.082 R)
• M12: 10,870,529 km (0.099 R)
• M13: 11,361,958 km (0.07 R)
• M14: 12,442,205 km (0.095 R)
• M15: 14,159,738 km (0.102 R)
• M16: 17,990,939 km (0.099 R)
• M17: 20,400,662 km (0.057 R)
• M18: 22,304,444 km (0.067 R)
• M19: 22,937,842 km (0.091 R)
• M20: 24,157,812 km (0.117 R)
• M21: 24,741,693 km (0.106 R)
• M22: 29,095,439 km (0.116 R)
• M23: 30,330,819 km (0.119 R)
• M24: 30,912,605 km (0.08 R)
• M25: 32,905,996 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 843.2

Radius: 3.4

Gravity: 72.94 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 12.84 AU - 18.9 AU

Year: 22977 Days

Day: 24.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 89,449,262 km

• M1: 42,336 km (0.092 R)
• M2: 247,884 km (0.084 R)
• M3: 489,335 km (0.1 R)
• M4: 705,204 km (0.071 R)
• M5: 1,158,785 km (0.084 R)
• M6: 1,983,967 km (0.099 R)
• M7: 2,222,875 km (0.12 R)
• M8: 2,680,046 km (0.055 R)
• M9: 2,944,535 km (0.112 R)
• M10: 3,255,250 km (0.092 R)
• M11: 3,842,870 km (0.044 R)
• M12: 3,974,965 km (0.103 R)
• M13: 4,871,206 km (0.103 R)
• M14: 8,189,436 km (0.11 R)
• M15: 10,755,339 km (0.052 R)
• M16: 12,397,325 km (0.075 R)
• M17: 12,686,348 km (0.05 R)
• M18: 13,656,640 km (0.118 R)
• M19: 16,862,672 km (0.088 R)
• M20: 17,850,018 km (0.114 R)
• M21: 18,033,724 km (0.12 R)
• M22: 18,970,506 km (0.112 R)
• M23: 19,743,029 km (0.027 R)
• M24: 22,185,963 km (0.109 R)
• M25: 27,174,154 km (0.105 R)
• M26: 28,528,464 km (0.076 R)
• M27: 33,552,558 km (0.112 R)
• M28: 35,833,328 km (0.055 R)
• M29: 38,063,383 km (0.066 R)
• M30: 42,307,624 km (0.084 R)
• M31: 42,961,965 km (0.12 R)
• M32: 44,627,438 km (0.118 R)
• M33: 52,656,506 km (0.111 R)
• M34: 58,511,916 km (0.067 R)
• M35: 60,349,576 km (0.072 R)
• M36: 60,970,707 km (0.083 R)
• M37: 64,786,350 km (0.107 R)
• M38: 65,220,034 km (0.071 R)
• M39: 65,437,400 km (0.082 R)
• M40: 66,973,471 km (0.089 R)

Kuiper Belt

Range: 30.2 - 58.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 321 - 11,767 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit