🌌 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: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.45 AU - 0.73 AU

Year: 169 Days

Day: 29 Hours

Environment

Temp: 140 °C

Axial Tilt: 1.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.84

Radius: 1.28

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.82 AU - 1.18 AU

Year: 373 Days

Day: 38.6 Hours

Environment

Temp: 9 °C

Axial Tilt: 17.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.97 AU - 1.49 AU

Year: 509 Days

Day: 29.5 Hours

Environment

Temp: -10 °C

Axial Tilt: 32.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.55

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.63 AU - 2.35 AU

Year: 1046 Days

Day: 14 Hours

Environment

Temp: -74 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,443,977 km

• M1: 37,399 km (0.075 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.48 AU - 2.6 AU

Year: 1509 Days

Day: 12.5 Hours

Environment

Temp: -101 °C

Axial Tilt: 50 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 56,443,977 km

• M1: 32,164 km (0.091 R)
• M2: 411,843 km (0.114 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.89

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 3.43 AU - 4.11 AU

Year: 2729 Days

Day: 14.9 Hours

Environment

Temp: -116 °C

Axial Tilt: 7.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.5

Radius: 10.3

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 5.21 AU - 5.53 AU

Year: 4639 Days

Day: 12.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 56,443,977 km

• M1: 128,205 km (0.077 R)
• M2: 478,264 km (0.106 R)
• M3: 883,525 km (0.091 R)
• M4: 1,334,114 km (0.098 R)
• M5: 1,689,708 km (0.06 R)
• M6: 2,192,357 km (0.095 R)
• M7: 4,505,439 km (0.044 R)
• M8: 4,987,892 km (0.048 R)
• M9: 7,732,564 km (0.109 R)
• M10: 8,677,724 km (0.074 R)
• M11: 9,698,131 km (0.092 R)
• M12: 10,095,762 km (0.067 R)
• M13: 11,267,263 km (0.059 R)
• M14: 13,143,071 km (0.072 R)
• M15: 14,028,989 km (0.076 R)
• M16: 15,165,335 km (0.111 R)
• M17: 15,647,488 km (0.066 R)
• M18: 16,869,254 km (0.102 R)
• M19: 17,271,074 km (0.115 R)
• M20: 18,697,191 km (0.103 R)
• M21: 19,690,670 km (0.062 R)
• M22: 21,379,630 km (0.095 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.1

Radius: 10.7

Gravity: 7.06 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 7.7 AU - 8.02 AU

Year: 8215 Days

Day: 14.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,443,977 km

• M1: 133,142 km (0.06 R)
• M2: 555,008 km (0.113 R)
• M3: 966,701 km (0.119 R)
• M4: 1,798,166 km (0.11 R)
• M5: 2,182,334 km (0.09 R)
• M6: 2,544,211 km (0.096 R)
• M7: 3,533,053 km (0.099 R)
• M8: 3,957,612 km (0.109 R)
• M9: 4,615,094 km (0.115 R)
• M10: 5,472,440 km (0.114 R)
• M11: 8,730,083 km (0.04 R)
• M12: 9,557,060 km (0.037 R)
• M13: 10,136,901 km (0.079 R)
• M14: 10,587,041 km (0.101 R)
• M15: 11,366,895 km (0.062 R)
• M16: 12,128,797 km (0.114 R)
• M17: 13,158,180 km (0.101 R)
• M18: 13,573,763 km (0.089 R)
• M19: 15,455,405 km (0.113 R)
• M20: 16,187,088 km (0.081 R)
• M21: 18,300,008 km (0.101 R)
• M22: 20,039,832 km (0.103 R)
• M23: 22,053,269 km (0.065 R)
• M24: 22,640,291 km (0.103 R)
• M25: 29,601,529 km (0.093 R)
• M26: 31,567,694 km (0.036 R)
• M27: 34,734,382 km (0.052 R)
• M28: 39,074,365 km (0.028 R)
• M29: 43,238,871 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 831.1

Radius: 4.7

Gravity: 37.62 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 10.72 AU - 13.62 AU

Year: 15827 Days

Day: 20.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 56,443,977 km

• M1: 58,493 km (0.042 R)
• M2: 217,964 km (0.094 R)
• M3: 399,277 km (0.082 R)
• M4: 605,123 km (0.109 R)
• M5: 1,168,659 km (0.112 R)
• M6: 1,393,803 km (0.081 R)
• M7: 1,664,276 km (0.029 R)
• M8: 1,988,305 km (0.082 R)
• M9: 2,185,625 km (0.114 R)
• M10: 2,353,025 km (0.108 R)
• M11: 2,689,919 km (0.054 R)
• M12: 3,835,091 km (0.109 R)
• M13: 4,839,641 km (0.11 R)
• M14: 5,161,426 km (0.052 R)
• M15: 8,626,262 km (0.104 R)
• M16: 9,369,315 km (0.087 R)
• M17: 11,853,836 km (0.105 R)
• M18: 12,570,410 km (0.083 R)
• M19: 13,804,742 km (0.047 R)
• M20: 15,882,058 km (0.091 R)
• M21: 16,352,842 km (0.072 R)
• M22: 18,500,769 km (0.105 R)
• M23: 23,146,231 km (0.048 R)
• M24: 24,057,432 km (0.094 R)
• M25: 24,887,401 km (0.111 R)
• M26: 25,203,352 km (0.095 R)
• M27: 26,276,268 km (0.109 R)
• M28: 27,267,653 km (0.064 R)
• M29: 36,788,959 km (0.028 R)
• M30: 44,182,684 km (0.103 R)
• M31: 44,491,304 km (0.09 R)
• M32: 45,425,543 km (0.117 R)
• M33: 52,507,506 km (0.114 R)
• M34: 53,725,831 km (0.063 R)
• M35: 60,290,485 km (0.111 R)
• M36: 61,051,340 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 427.3

Radius: 6.8

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 9.82 AU - 14.88 AU

Year: 16179 Days

Day: 22.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 56,443,977 km

• M1: 85,869 km (0.089 R)
• M2: 342,430 km (0.117 R)
• M3: 883,375 km (0.085 R)
• M4: 1,361,939 km (0.108 R)
• M5: 2,091,528 km (0.109 R)
• M6: 2,758,136 km (0.09 R)
• M7: 4,820,343 km (0.12 R)
• M8: 5,393,452 km (0.103 R)
• M9: 7,560,676 km (0.087 R)
• M10: 7,918,066 km (0.118 R)
• M11: 8,959,117 km (0.088 R)
• M12: 9,308,728 km (0.114 R)
• M13: 11,777,691 km (0.056 R)
• M14: 16,287,618 km (0.091 R)
• M15: 17,727,647 km (0.116 R)
• M16: 18,760,620 km (0.119 R)
• M17: 22,190,002 km (0.119 R)
• M18: 25,514,964 km (0.104 R)
• M19: 26,522,655 km (0.09 R)
• M20: 28,296,138 km (0.077 R)
• M21: 29,484,992 km (0.107 R)
• M22: 31,731,204 km (0.115 R)
• M23: 31,962,034 km (0.062 R)
• M24: 34,574,312 km (0.119 R)
• M25: 41,170,531 km (0.118 R)
• M26: 46,005,085 km (0.108 R)
• M27: 49,947,737 km (0.074 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 398 - 13,221 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit