🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.86 AU - 1.14 AU

Year: 353 Days

Day: 43.3 Hours

Environment

Temp: 112 °C

Axial Tilt: 2.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.41 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.24

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.07 AU - 1.75 AU

Year: 591 Days

Day: 39.3 Hours

Environment

Temp: 7 °C

Axial Tilt: 33.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 99,001,141 km

• M1: 30,967 km (0.089 R)
• M2: 327,171 km (0.071 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.04

Radius: 1.02

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.34 AU - 2.18 AU

Year: 824 Days

Day: 20.3 Hours

Environment

Temp: -43 °C

Axial Tilt: 12.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 99,001,141 km

• M1: 48,619 km (0.049 R)
• M2: 628,161 km (0.067 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.82 AU - 1.84 AU

Year: 874 Days

Day: 25.9 Hours

Environment

Temp: -54 °C

Axial Tilt: 34.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.67 AU - 2.13 AU

Year: 925 Days

Day: 36.7 Hours

Environment

Temp: -53 °C

Axial Tilt: 1.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 99,001,141 km

• M1: 185,651 km (0.077 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.09

Radius: 1.04

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.91 AU - 1.93 AU

Year: 939 Days

Day: 41.3 Hours

Environment

Temp: -45 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 99,001,141 km

• M1: 25,581 km (0.111 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 3.77 AU - 4.25 AU

Year: 2835 Days

Day: 16.3 Hours

Environment

Temp: -113 °C

Axial Tilt: 8.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.1

Radius: 14.4

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 8.14 AU - 10.38 AU

Year: 9950 Days

Day: 11.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 99,001,141 km

• M1: 179,069 km (0.081 R)
• M2: 927,058 km (0.113 R)
• M3: 1,649,616 km (0.03 R)
• M4: 9,711,146 km (0.05 R)
• M5: 11,640,510 km (0.1 R)
• M6: 12,354,540 km (0.061 R)
• M7: 13,590,967 km (0.081 R)
• M8: 18,402,184 km (0.11 R)
• M9: 22,957,588 km (0.101 R)
• M10: 23,756,740 km (0.091 R)
• M11: 26,788,192 km (0.063 R)
• M12: 27,853,628 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 629.2

Radius: 6.2

Gravity: 16.37 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 12.53 AU - 19.61 AU

Year: 22747 Days

Day: 20.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 99,001,141 km

• M1: 78,539 km (0.071 R)
• M2: 647,011 km (0.097 R)
• M3: 1,069,475 km (0.081 R)
• M4: 2,790,299 km (0.081 R)
• M5: 3,412,028 km (0.043 R)
• M6: 3,928,141 km (0.069 R)
• M7: 4,188,441 km (0.032 R)
• M8: 7,076,727 km (0.111 R)
• M9: 9,319,349 km (0.101 R)
• M10: 10,262,414 km (0.049 R)
• M11: 12,199,856 km (0.032 R)
• M12: 13,182,265 km (0.11 R)
• M13: 15,624,151 km (0.115 R)
• M14: 17,906,267 km (0.065 R)
• M15: 20,789,766 km (0.093 R)
• M16: 22,290,083 km (0.104 R)
• M17: 26,526,246 km (0.111 R)
• M18: 26,988,952 km (0.098 R)
• M19: 29,383,266 km (0.076 R)
• M20: 35,420,288 km (0.055 R)
• M21: 36,548,256 km (0.095 R)
• M22: 53,278,085 km (0.099 R)
• M23: 54,571,059 km (0.037 R)
• M24: 62,771,566 km (0.077 R)
• M25: 64,838,111 km (0.112 R)
• M26: 68,454,938 km (0.096 R)
• M27: 75,623,369 km (0.073 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 797.7

Radius: 4.5

Gravity: 39.39 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 15.47 AU - 21.01 AU

Year: 27507 Days

Day: 19 Hours

Environment

Temp: -199 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 99,001,141 km

• M1: 56,099 km (0.097 R)
• M2: 226,940 km (0.087 R)
• M3: 568,322 km (0.106 R)
• M4: 713,432 km (0.072 R)
• M5: 1,291,478 km (0.05 R)
• M6: 1,795,025 km (0.031 R)
• M7: 2,274,935 km (0.1 R)
• M8: 3,119,265 km (0.113 R)
• M9: 3,452,569 km (0.099 R)
• M10: 3,611,741 km (0.109 R)
• M11: 4,986,995 km (0.112 R)
• M12: 5,149,608 km (0.061 R)
• M13: 5,925,272 km (0.06 R)
• M14: 7,759,342 km (0.062 R)
• M15: 8,313,303 km (0.071 R)
• M16: 8,599,933 km (0.101 R)
• M17: 14,210,601 km (0.079 R)
• M18: 16,250,069 km (0.043 R)
• M19: 20,171,328 km (0.097 R)
• M20: 22,294,421 km (0.115 R)
• M21: 22,625,332 km (0.113 R)
• M22: 23,296,727 km (0.07 R)
• M23: 23,523,517 km (0.114 R)
• M24: 28,761,687 km (0.106 R)
• M25: 31,030,488 km (0.102 R)
• M26: 31,858,811 km (0.1 R)
• M27: 43,490,495 km (0.085 R)
• M28: 46,830,267 km (0.087 R)
• M29: 47,554,470 km (0.108 R)
• M30: 48,286,154 km (0.068 R)
• M31: 48,839,815 km (0.034 R)
• M32: 49,397,666 km (0.113 R)
• M33: 60,606,436 km (0.113 R)
• M34: 62,771,416 km (0.087 R)
• M35: 71,707,196 km (0.112 R)
• M36: 73,639,253 km (0.072 R)
• M37: 77,103,341 km (0.101 R)
• M38: 78,875,477 km (0.12 R)
• M39: 96,062,328 km (0.107 R)
• M40: 96,937,775 km (0.036 R)

Kuiper Belt

Range: 31.1 - 56.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 19,723 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit