🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.61

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.57 AU - 0.87 AU

Year: 228 Days

Day: 13.1 Hours

Environment

Temp: 186 °C

Axial Tilt: 2.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.37 AU - 2.19 AU

Year: 885 Days

Day: 18.9 Hours

Environment

Temp: -53 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 77,402,856 km

• M1: 983,307 km (0.107 R)
• M2: 1,565,243 km (0.106 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.66

Radius: 1.22

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.63 AU - 2.65 AU

Year: 1167 Days

Day: 17.9 Hours

Environment

Temp: -89 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,402,856 km

• M1: 186,100 km (0.098 R)

Asteroid Belt

Center: 3.49 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 318.3

Radius: 12.1

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 4.77 AU - 4.91 AU

Year: 3969 Days

Day: 13.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,402,856 km

• M1: 151,543 km (0.112 R)
• M2: 898,634 km (0.108 R)
• M3: 2,203,577 km (0.031 R)
• M4: 3,664,250 km (0.116 R)
• M5: 5,743,062 km (0.109 R)
• M6: 6,745,368 km (0.09 R)
• M7: 7,578,778 km (0.076 R)
• M8: 13,759,264 km (0.033 R)
• M9: 14,370,671 km (0.089 R)
• M10: 17,703,412 km (0.084 R)
• M11: 18,710,355 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.3

Radius: 14.7

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 4.92 AU - 5.16 AU

Year: 4218 Days

Day: 6.9 Hours

Environment

Temp: -143 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 77,402,856 km

• M1: 182,809 km (0.114 R)
• M2: 1,194,389 km (0.106 R)
• M3: 1,970,952 km (0.116 R)
• M4: 3,082,165 km (0.114 R)
• M5: 5,562,348 km (0.106 R)
• M6: 7,246,670 km (0.086 R)
• M7: 7,949,182 km (0.096 R)
• M8: 9,073,111 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 941

Radius: 10.8

Gravity: 8.07 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 4.97 AU - 7.93 AU

Year: 6107 Days

Day: 5.8 Hours

Environment

Temp: -151 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,402,856 km

• M1: 134,488 km (0.091 R)
• M2: 581,337 km (0.086 R)
• M3: 1,047,335 km (0.113 R)
• M4: 1,703,770 km (0.076 R)
• M5: 2,149,721 km (0.117 R)
• M6: 2,787,607 km (0.051 R)
• M7: 4,360,928 km (0.09 R)
• M8: 6,321,108 km (0.118 R)
• M9: 7,514,301 km (0.059 R)
• M10: 13,871,014 km (0.081 R)
• M11: 16,129,044 km (0.106 R)
• M12: 17,244,595 km (0.092 R)
• M13: 18,551,333 km (0.059 R)
• M14: 20,369,994 km (0.065 R)
• M15: 21,052,908 km (0.111 R)
• M16: 21,672,692 km (0.053 R)
• M17: 24,955,767 km (0.049 R)
• M18: 26,001,905 km (0.088 R)
• M19: 28,839,777 km (0.066 R)
• M20: 29,797,502 km (0.117 R)
• M21: 33,526,528 km (0.096 R)
• M22: 35,666,526 km (0.041 R)
• M23: 36,769,960 km (0.099 R)
• M24: 37,782,289 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767.7

Radius: 12.4

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 5.58 AU - 8.04 AU

Year: 6625 Days

Day: 14.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 77,402,856 km

• M1: 154,834 km (0.055 R)
• M2: 764,445 km (0.03 R)
• M3: 1,202,468 km (0.076 R)
• M4: 1,715,140 km (0.099 R)
• M5: 2,321,460 km (0.109 R)
• M6: 2,732,405 km (0.101 R)
• M7: 3,129,438 km (0.103 R)
• M8: 4,192,780 km (0.08 R)
• M9: 5,391,806 km (0.106 R)
• M10: 6,843,055 km (0.054 R)
• M11: 10,125,382 km (0.119 R)
• M12: 11,235,997 km (0.057 R)
• M13: 12,641,319 km (0.106 R)
• M14: 14,336,862 km (0.107 R)
• M15: 16,827,068 km (0.083 R)
• M16: 17,899,535 km (0.105 R)
• M17: 18,804,004 km (0.059 R)
• M18: 25,226,091 km (0.09 R)
• M19: 26,809,135 km (0.103 R)
• M20: 29,021,538 km (0.048 R)
• M21: 30,758,968 km (0.096 R)
• M22: 31,452,952 km (0.073 R)
• M23: 32,258,986 km (0.06 R)
• M24: 33,389,497 km (0.07 R)
• M25: 35,621,048 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 44.3

Radius: 12.6

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 8.49 AU - 11.77 AU

Year: 12019 Days

Day: 8.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 81.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 77,402,856 km

• M1: 167,400 km (0.096 R)
• M2: 567,724 km (0.047 R)
• M3: 997,967 km (0.111 R)
• M4: 1,634,058 km (0.095 R)
• M5: 2,244,716 km (0.055 R)
• M6: 2,823,510 km (0.089 R)
• M7: 3,407,839 km (0.034 R)
• M8: 4,197,716 km (0.099 R)
• M9: 4,682,264 km (0.072 R)
• M10: 6,621,950 km (0.063 R)
• M11: 7,157,959 km (0.109 R)
• M12: 8,942,213 km (0.079 R)
• M13: 10,641,944 km (0.054 R)
• M14: 12,547,821 km (0.119 R)
• M15: 14,523,260 km (0.091 R)
• M16: 15,950,424 km (0.1 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 428.5

Radius: 4.1

Gravity: 25.49 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 16.51 AU - 17.33 AU

Year: 25945 Days

Day: 24.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 77,402,856 km

• M1: 53,556 km (0.096 R)
• M2: 249,828 km (0.114 R)
• M3: 385,963 km (0.1 R)
• M4: 607,068 km (0.097 R)
• M5: 1,133,653 km (0.08 R)
• M6: 1,274,125 km (0.091 R)
• M7: 1,426,266 km (0.065 R)
• M8: 1,841,550 km (0.114 R)
• M9: 2,118,605 km (0.088 R)
• M10: 2,377,709 km (0.103 R)
• M11: 2,780,576 km (0.09 R)
• M12: 3,118,068 km (0.038 R)
• M13: 6,200,981 km (0.083 R)
• M14: 6,595,321 km (0.085 R)
• M15: 6,730,408 km (0.097 R)
• M16: 7,728,376 km (0.079 R)
• M17: 9,040,349 km (0.081 R)
• M18: 11,053,188 km (0.1 R)
• M19: 14,076,561 km (0.089 R)
• M20: 15,457,649 km (0.114 R)
• M21: 17,350,660 km (0.094 R)
• M22: 19,300,668 km (0.118 R)
• M23: 20,903,909 km (0.116 R)
• M24: 25,022,338 km (0.079 R)
• M25: 29,406,304 km (0.108 R)
• M26: 30,890,315 km (0.092 R)
• M27: 36,617,520 km (0.101 R)
• M28: 41,159,012 km (0.066 R)
• M29: 47,890,766 km (0.04 R)
• M30: 49,595,135 km (0.06 R)
• M31: 50,811,964 km (0.057 R)
• M32: 57,006,213 km (0.043 R)
• M33: 58,149,141 km (0.064 R)
• M34: 58,726,290 km (0.069 R)
• M35: 59,113,150 km (0.048 R)
• M36: 69,561,813 km (0.109 R)
• M37: 70,429,780 km (0.114 R)
• M38: 72,187,405 km (0.104 R)
• M39: 74,651,432 km (0.072 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 435 - 13,276 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit