🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.07

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.62 AU - 0.64 AU

Year: 323 Days

Day: 28.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 45.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 40,586,257 km

• M1: 101,278 km (0.116 R)
• M2: 163,810 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 776.6

Radius: 10.4

Gravity: 7.18 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.53 AU - 0.87 AU

Year: 378 Days

Day: 13.7 Hours

Environment

Temp: -141 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,586,257 km

• M1: 129,402 km (0.063 R)
• M2: 455,675 km (0.116 R)
• M3: 867,817 km (0.111 R)
• M4: 1,219,522 km (0.114 R)
• M5: 1,783,955 km (0.085 R)
• M6: 2,131,919 km (0.106 R)
• M7: 2,670,472 km (0.118 R)
• M8: 3,140,508 km (0.083 R)
• M9: 3,604,261 km (0.117 R)
• M10: 4,113,343 km (0.116 R)
• M11: 5,419,183 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 249.8

Radius: 9.7

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.71 AU - 0.95 AU

Year: 488 Days

Day: 8.5 Hours

Environment

Temp: -150 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,586,257 km

• M1: 120,725 km (0.091 R)
• M2: 445,951 km (0.11 R)
• M3: 869,762 km (0.078 R)
• M4: 1,360,892 km (0.068 R)
• M5: 1,701,377 km (0.077 R)
• M6: 2,169,917 km (0.062 R)
• M7: 2,713,705 km (0.096 R)
• M8: 3,124,950 km (0.075 R)
• M9: 3,488,174 km (0.113 R)
• M10: 3,999,948 km (0.092 R)
• M11: 4,338,488 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398.8

Radius: 9

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.03 AU - 1.33 AU

Year: 828 Days

Day: 6 Hours

Environment

Temp: -160 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,586,257 km

• M1: 112,049 km (0.111 R)
• M2: 444,156 km (0.12 R)
• M3: 741,257 km (0.051 R)
• M4: 1,117,047 km (0.115 R)
• M5: 1,491,640 km (0.109 R)
• M6: 1,905,428 km (0.119 R)
• M7: 3,183,742 km (0.058 R)
• M8: 4,662,666 km (0.067 R)
• M9: 5,077,651 km (0.062 R)
• M10: 6,174,951 km (0.081 R)
• M11: 6,614,470 km (0.083 R)
• M12: 7,074,783 km (0.114 R)
• M13: 7,422,897 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.1

Radius: 10.3

Gravity: 7.19 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.47 AU - 1.53 AU

Year: 1186 Days

Day: 12.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,586,257 km

• M1: 128,056 km (0.097 R)
• M2: 451,786 km (0.112 R)
• M3: 870,660 km (0.104 R)
• M4: 1,313,619 km (0.101 R)
• M5: 1,702,424 km (0.092 R)
• M6: 2,038,720 km (0.091 R)
• M7: 2,491,852 km (0.103 R)
• M8: 2,888,585 km (0.089 R)
• M9: 4,094,943 km (0.113 R)
• M10: 4,520,848 km (0.102 R)
• M11: 5,114,751 km (0.109 R)
• M12: 6,342,202 km (0.103 R)
• M13: 7,442,195 km (0.101 R)
• M14: 7,782,530 km (0.049 R)
• M15: 8,382,268 km (0.101 R)
• M16: 9,674,046 km (0.096 R)
• M17: 10,432,357 km (0.092 R)
• M18: 10,859,309 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590

Radius: 13.2

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.75 AU - 2.87 AU

Year: 2267 Days

Day: 13.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,586,257 km

• M1: 164,258 km (0.092 R)
• M2: 595,250 km (0.077 R)
• M3: 1,271,432 km (0.091 R)
• M4: 1,725,013 km (0.099 R)
• M5: 2,275,683 km (0.118 R)
• M6: 2,793,591 km (0.094 R)
• M7: 3,665,597 km (0.078 R)
• M8: 5,490,541 km (0.104 R)
• M9: 6,224,917 km (0.085 R)
• M10: 6,804,160 km (0.077 R)
• M11: 7,889,792 km (0.058 R)
• M12: 9,021,799 km (0.107 R)
• M13: 9,869,720 km (0.075 R)
• M14: 10,439,687 km (0.108 R)
• M15: 11,107,343 km (0.103 R)
• M16: 12,081,524 km (0.038 R)
• M17: 12,527,774 km (0.073 R)
• M18: 13,626,870 km (0.119 R)
• M19: 14,155,250 km (0.116 R)
• M20: 15,066,450 km (0.066 R)
• M21: 15,919,607 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 409.5

Radius: 10.2

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 3.56 AU - 5.45 AU

Year: 6164 Days

Day: 11.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 40,586,257 km

• M1: 126,859 km (0.081 R)
• M2: 719,267 km (0.103 R)
• M3: 1,332,917 km (0.116 R)
• M4: 1,711,998 km (0.105 R)
• M5: 2,833,683 km (0.079 R)
• M6: 3,326,907 km (0.115 R)
• M7: 5,051,023 km (0.098 R)
• M8: 6,137,402 km (0.083 R)
• M9: 6,511,098 km (0.111 R)
• M10: 7,100,065 km (0.092 R)
• M11: 10,200,032 km (0.09 R)
• M12: 12,558,891 km (0.104 R)
• M13: 15,316,428 km (0.037 R)
• M14: 16,181,403 km (0.116 R)
• M15: 16,957,068 km (0.112 R)
• M16: 17,632,652 km (0.117 R)
• M17: 19,234,845 km (0.098 R)
• M18: 19,566,653 km (0.111 R)
• M19: 22,579,255 km (0.101 R)
• M20: 23,397,107 km (0.073 R)
• M21: 24,157,513 km (0.038 R)
• M22: 25,012,764 km (0.096 R)
• M23: 26,049,627 km (0.071 R)
• M24: 27,281,266 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.6

Radius: 12.6

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 3.66 AU - 6.08 AU

Year: 6939 Days

Day: 5.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,586,257 km

• M1: 175,030 km (0.116 R)
• M2: 1,747,154 km (0.088 R)
• M3: 4,104,517 km (0.114 R)
• M4: 4,710,538 km (0.106 R)
• M5: 5,460,173 km (0.096 R)
• M6: 6,264,411 km (0.116 R)
• M7: 7,249,064 km (0.07 R)
• M8: 7,970,275 km (0.108 R)
• M9: 9,618,694 km (0.088 R)
• M10: 11,985,632 km (0.077 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.8

Radius: 13.4

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 5.32 AU - 5.6 AU

Year: 8238 Days

Day: 9.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,586,257 km

• M1: 175,777 km (0.116 R)
• M2: 620,981 km (0.103 R)
• M3: 1,516,174 km (0.108 R)
• M4: 2,402,093 km (0.118 R)
• M5: 3,402,753 km (0.077 R)
• M6: 3,849,901 km (0.113 R)
• M7: 5,158,733 km (0.077 R)
• M8: 6,252,593 km (0.08 R)
• M9: 7,113,977 km (0.093 R)
• M10: 8,134,833 km (0.054 R)
• M11: 10,614,119 km (0.071 R)
• M12: 13,912,004 km (0.062 R)
• M13: 14,572,179 km (0.088 R)
• M14: 19,200,737 km (0.029 R)
• M15: 21,330,562 km (0.066 R)
• M16: 23,028,348 km (0.103 R)
• M17: 31,949,767 km (0.045 R)
• M18: 36,151,373 km (0.097 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 246 - 14,844 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit