🌌 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 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.46 AU - 0.6 AU

Year: 253 Days

Day: 30.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 13.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.55 AU - 0.67 AU

Year: 313 Days

Day: 43.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 11.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 667.3

Radius: 14.9

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.8 AU - 0.82 AU

Year: 478 Days

Day: 6.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,019,417 km

• M1: 190,737 km (0.079 R)
• M2: 761,304 km (0.106 R)
• M3: 2,028,846 km (0.042 R)
• M4: 2,894,420 km (0.086 R)
• M5: 3,366,251 km (0.079 R)
• M6: 4,584,576 km (0.086 R)
• M7: 5,312,071 km (0.093 R)
• M8: 5,955,790 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852.1

Radius: 11.6

Gravity: 6.33 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.96 AU - 1.52 AU

Year: 906 Days

Day: 10.2 Hours

Environment

Temp: -175 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,019,417 km

• M1: 146,905 km (0.086 R)
• M2: 835,504 km (0.109 R)
• M3: 1,328,579 km (0.118 R)
• M4: 1,758,822 km (0.033 R)
• M5: 2,347,939 km (0.06 R)
• M6: 3,159,507 km (0.119 R)
• M7: 4,248,729 km (0.066 R)
• M8: 5,085,131 km (0.106 R)
• M9: 6,352,524 km (0.1 R)
• M10: 7,013,148 km (0.114 R)
• M11: 9,589,224 km (0.11 R)
• M12: 10,032,781 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.6

Radius: 13.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 2.06 AU - 2.4 AU

Year: 2185 Days

Day: 5.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,019,417 km

• M1: 174,132 km (0.065 R)
• M2: 638,633 km (0.064 R)
• M3: 1,249,292 km (0.099 R)
• M4: 1,785,750 km (0.096 R)
• M5: 2,287,950 km (0.106 R)
• M6: 2,752,152 km (0.109 R)
• M7: 3,975,264 km (0.03 R)
• M8: 4,597,143 km (0.07 R)
• M9: 5,120,735 km (0.101 R)
• M10: 5,705,663 km (0.111 R)
• M11: 6,499,429 km (0.079 R)
• M12: 7,417,362 km (0.107 R)
• M13: 9,542,100 km (0.085 R)
• M14: 10,895,811 km (0.105 R)
• M15: 11,548,656 km (0.107 R)
• M16: 12,447,440 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.7

Radius: 14

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 2.39 AU - 3.45 AU

Year: 3273 Days

Day: 7.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 29,019,417 km

• M1: 174,132 km (0.079 R)
• M2: 1,010,982 km (0.107 R)
• M3: 1,563,148 km (0.033 R)
• M4: 2,274,935 km (0.1 R)
• M5: 3,196,009 km (0.108 R)
• M6: 3,973,469 km (0.106 R)
• M7: 4,507,384 km (0.091 R)
• M8: 5,360,690 km (0.113 R)
• M9: 6,518,428 km (0.086 R)
• M10: 7,172,171 km (0.043 R)
• M11: 8,034,004 km (0.093 R)
• M12: 8,646,159 km (0.084 R)
• M13: 10,196,441 km (0.117 R)
• M14: 10,752,497 km (0.073 R)
• M15: 13,462,013 km (0.118 R)
• M16: 14,874,217 km (0.089 R)
• M17: 16,275,800 km (0.065 R)
• M18: 21,072,655 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 12.6

Radius: 10.3

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 3.15 AU - 3.93 AU

Year: 4369 Days

Day: 10.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 29,019,417 km

• M1: 138,079 km (0.112 R)
• M2: 1,419,085 km (0.075 R)
• M3: 2,889,632 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.5

Radius: 12.8

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 3.11 AU - 5.05 AU

Year: 5406 Days

Day: 9.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 29,019,417 km

• M1: 159,920 km (0.102 R)
• M2: 657,333 km (0.068 R)
• M3: 1,085,183 km (0.111 R)
• M4: 1,483,562 km (0.104 R)
• M5: 1,896,452 km (0.105 R)
• M6: 2,867,043 km (0.117 R)
• M7: 3,389,738 km (0.099 R)
• M8: 4,497,810 km (0.044 R)
• M9: 6,085,941 km (0.093 R)
• M10: 7,238,742 km (0.083 R)
• M11: 9,023,893 km (0.085 R)
• M12: 12,279,292 km (0.088 R)
• M13: 14,685,873 km (0.043 R)
• M14: 15,273,943 km (0.101 R)
• M15: 16,749,576 km (0.12 R)
• M16: 17,784,793 km (0.067 R)
• M17: 19,277,481 km (0.116 R)
• M18: 21,295,855 km (0.079 R)
• M19: 22,126,123 km (0.097 R)
• M20: 23,451,561 km (0.062 R)
• M21: 25,749,234 km (0.063 R)
• M22: 26,174,691 km (0.076 R)
• M23: 26,952,600 km (0.08 R)
• M24: 30,124,673 km (0.108 R)
• M25: 31,170,960 km (0.057 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.9

Radius: 10.2

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 3.83 AU - 4.51 AU

Year: 5586 Days

Day: 6 Hours

Environment

Temp: -221 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 29,019,417 km

• M1: 126,859 km (0.08 R)
• M2: 490,681 km (0.107 R)
• M3: 830,119 km (0.046 R)
• M4: 1,210,097 km (0.117 R)
• M5: 1,595,312 km (0.11 R)
• M6: 3,056,883 km (0.117 R)
• M7: 5,318,503 km (0.089 R)
• M8: 6,593,526 km (0.027 R)
• M9: 8,288,320 km (0.114 R)
• M10: 9,033,318 km (0.086 R)
• M11: 9,652,653 km (0.111 R)
• M12: 10,168,167 km (0.095 R)
• M13: 10,975,846 km (0.107 R)
• M14: 12,617,683 km (0.092 R)
• M15: 16,321,427 km (0.06 R)
• M16: 17,490,833 km (0.109 R)
• M17: 18,387,822 km (0.101 R)
• M18: 20,622,814 km (0.077 R)
• M19: 22,656,448 km (0.091 R)
• M20: 23,414,161 km (0.089 R)
• M21: 23,876,718 km (0.05 R)
• M22: 24,820,381 km (0.071 R)
• M23: 25,788,579 km (0.102 R)
• M24: 26,116,946 km (0.092 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.6

Radius: 11.8

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 4.67 AU - 5.91 AU

Year: 7982 Days

Day: 8.4 Hours

Environment

Temp: -228 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 29,019,417 km

• M1: 146,756 km (0.08 R)
• M2: 516,711 km (0.061 R)
• M3: 934,089 km (0.072 R)
• M4: 1,332,319 km (0.071 R)
• M5: 2,240,378 km (0.08 R)
• M6: 4,067,566 km (0.033 R)
• M7: 4,743,898 km (0.115 R)
• M8: 5,986,608 km (0.04 R)
• M9: 7,263,575 km (0.092 R)
• M10: 7,858,376 km (0.111 R)
• M11: 9,026,436 km (0.119 R)
• M12: 10,789,298 km (0.111 R)
• M13: 13,379,435 km (0.077 R)
• M14: 17,077,046 km (0.105 R)
• M15: 18,833,624 km (0.065 R)
• M16: 19,822,615 km (0.095 R)
• M17: 22,410,359 km (0.08 R)
• M18: 24,127,893 km (0.098 R)
• M19: 25,931,594 km (0.12 R)
• M20: 26,579,652 km (0.061 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 511 - 13,300 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit