🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 979.4

Radius: 12.5

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.51 AU - 0.55 AU

Year: 257 Days

Day: 12.4 Hours

Environment

Temp: -136 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,366,031 km

• M1: 155,432 km (0.079 R)
• M2: 589,864 km (0.109 R)
• M3: 1,493,735 km (0.09 R)
• M4: 1,889,720 km (0.066 R)
• M5: 2,306,799 km (0.083 R)
• M6: 2,757,538 km (0.097 R)
• M7: 3,277,989 km (0.043 R)
• M8: 3,971,674 km (0.091 R)
• M9: 4,504,691 km (0.045 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650.7

Radius: 13.3

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1 AU - 1.12 AU

Year: 728 Days

Day: 7.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,366,031 km

• M1: 165,455 km (0.074 R)
• M2: 639,082 km (0.091 R)
• M3: 1,316,760 km (0.107 R)
• M4: 1,793,230 km (0.087 R)
• M5: 2,235,890 km (0.112 R)
• M6: 2,695,903 km (0.041 R)
• M7: 3,245,077 km (0.105 R)
• M8: 3,768,520 km (0.086 R)
• M9: 5,410,357 km (0.108 R)
• M10: 6,350,878 km (0.097 R)
• M11: 6,786,208 km (0.099 R)
• M12: 7,308,006 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.5

Radius: 12.6

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.09 AU - 1.43 AU

Year: 943 Days

Day: 11.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,366,031 km

• M1: 156,779 km (0.097 R)
• M2: 633,846 km (0.095 R)
• M3: 1,044,044 km (0.07 R)
• M4: 1,499,419 km (0.104 R)
• M5: 2,008,501 km (0.089 R)
• M6: 2,549,148 km (0.117 R)
• M7: 2,997,343 km (0.119 R)
• M8: 3,483,835 km (0.111 R)
• M9: 4,270,570 km (0.114 R)
• M10: 5,249,838 km (0.077 R)
• M11: 5,813,672 km (0.094 R)
• M12: 6,575,275 km (0.112 R)
• M13: 8,980,061 km (0.078 R)
• M14: 9,729,247 km (0.066 R)
• M15: 10,645,235 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221

Radius: 13.2

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.99 AU - 1.61 AU

Year: 988 Days

Day: 10.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 98.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,366,031 km

• M1: 164,109 km (0.057 R)
• M2: 849,866 km (0.076 R)
• M3: 1,318,556 km (0.09 R)
• M4: 1,839,904 km (0.118 R)
• M5: 2,801,519 km (0.087 R)
• M6: 3,866,207 km (0.061 R)
• M7: 5,353,659 km (0.086 R)
• M8: 5,847,033 km (0.066 R)
• M9: 6,389,923 km (0.104 R)
• M10: 6,864,597 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.2

Radius: 9.2

Gravity: 10.71 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 4.12 AU - 4.24 AU

Year: 5699 Days

Day: 6.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 36,366,031 km

• M1: 114,442 km (0.047 R)
• M2: 411,544 km (0.032 R)
• M3: 905,965 km (0.113 R)
• M4: 1,398,441 km (0.105 R)
• M5: 2,061,758 km (0.12 R)
• M6: 2,563,210 km (0.084 R)
• M7: 2,862,705 km (0.101 R)
• M8: 5,067,927 km (0.103 R)
• M9: 6,211,752 km (0.11 R)
• M10: 8,338,585 km (0.087 R)
• M11: 8,748,932 km (0.08 R)
• M12: 9,699,477 km (0.081 R)
• M13: 12,481,250 km (0.07 R)
• M14: 14,255,929 km (0.026 R)
• M15: 16,703,201 km (0.111 R)
• M16: 18,574,520 km (0.096 R)
• M17: 19,704,433 km (0.103 R)
• M18: 21,332,058 km (0.091 R)
• M19: 21,868,217 km (0.093 R)
• M20: 22,256,722 km (0.076 R)
• M21: 24,684,845 km (0.111 R)
• M22: 28,928,787 km (0.107 R)
• M23: 29,775,212 km (0.116 R)
• M24: 30,541,452 km (0.113 R)
• M25: 31,124,735 km (0.055 R)
• M26: 33,020,738 km (0.094 R)
• M27: 35,524,258 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.8

Radius: 12.9

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.7 AU - 5.96 AU

Year: 7079 Days

Day: 5.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,366,031 km

• M1: 160,519 km (0.078 R)
• M2: 585,077 km (0.085 R)
• M3: 1,338,901 km (0.082 R)
• M4: 2,175,303 km (0.112 R)
• M5: 3,501,488 km (0.063 R)
• M6: 4,733,277 km (0.094 R)
• M7: 5,360,391 km (0.088 R)
• M8: 5,800,059 km (0.076 R)
• M9: 6,693,308 km (0.089 R)
• M10: 7,516,695 km (0.047 R)
• M11: 9,966,958 km (0.078 R)
• M12: 12,411,986 km (0.106 R)
• M13: 15,907,639 km (0.083 R)
• M14: 18,573,324 km (0.068 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 295.5

Radius: 7.4

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 5.17 AU - 8.41 AU

Year: 11799 Days

Day: 17.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 36,366,031 km

• M1: 111,151 km (0.042 R)
• M2: 386,561 km (0.061 R)
• M3: 678,127 km (0.088 R)
• M4: 4,666,706 km (0.114 R)
• M5: 5,700,128 km (0.084 R)
• M6: 8,763,742 km (0.058 R)
• M7: 9,295,413 km (0.059 R)
• M8: 15,026,657 km (0.101 R)
• M9: 17,734,080 km (0.073 R)
• M10: 21,614,200 km (0.088 R)
• M11: 22,420,083 km (0.036 R)
• M12: 23,751,205 km (0.107 R)
• M13: 26,937,191 km (0.098 R)
• M14: 31,510,547 km (0.074 R)
• M15: 32,756,099 km (0.071 R)
• M16: 36,916,566 km (0.105 R)
• M17: 37,374,036 km (0.112 R)
• M18: 38,886,919 km (0.065 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 119.8

Radius: 3

Gravity: 13.31 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 8.02 AU - 8.48 AU

Year: 15802 Days

Day: 18.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 36,366,031 km

• M1: 38,147 km (0.112 R)
• M2: 150,346 km (0.073 R)
• M3: 584,778 km (0.111 R)
• M4: 878,289 km (0.076 R)
• M5: 1,342,790 km (0.106 R)
• M6: 2,030,791 km (0.06 R)
• M7: 3,089,944 km (0.078 R)
• M8: 3,303,869 km (0.075 R)
• M9: 3,955,368 km (0.119 R)
• M10: 7,728,376 km (0.109 R)
• M11: 8,122,117 km (0.099 R)
• M12: 12,285,725 km (0.115 R)
• M13: 12,444,748 km (0.057 R)
• M14: 16,174,372 km (0.1 R)
• M15: 19,703,685 km (0.118 R)
• M16: 20,141,109 km (0.032 R)
• M17: 21,801,047 km (0.089 R)
• M18: 24,042,472 km (0.057 R)
• M19: 27,054,177 km (0.064 R)
• M20: 27,323,453 km (0.094 R)
• M21: 31,480,628 km (0.072 R)
• M22: 35,608,482 km (0.101 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 216 - 15,922 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit