🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.8

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 17.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 356.1

Radius: 8.3

Gravity: 5.17 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.92 AU - 1.08 AU

Year: 656 Days

Day: 11.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,106,532 km

• M1: 103,223 km (0.118 R)
• M2: 521,947 km (0.112 R)
• M3: 824,135 km (0.106 R)
• M4: 1,090,419 km (0.075 R)
• M5: 1,601,296 km (0.065 R)
• M6: 1,875,808 km (0.09 R)
• M7: 2,209,112 km (0.075 R)
• M8: 2,571,438 km (0.061 R)
• M9: 2,940,047 km (0.105 R)
• M10: 3,502,834 km (0.078 R)
• M11: 3,849,901 km (0.108 R)
• M12: 4,391,595 km (0.119 R)
• M13: 5,110,862 km (0.038 R)
• M14: 5,713,143 km (0.105 R)
• M15: 6,177,046 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 844.9

Radius: 14

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.62 AU - 1.68 AU

Year: 1390 Days

Day: 14.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 22,106,532 km

• M1: 174,132 km (0.041 R)
• M2: 641,775 km (0.103 R)
• M3: 1,085,781 km (0.114 R)
• M4: 1,766,900 km (0.08 R)
• M5: 2,465,373 km (0.103 R)
• M6: 3,101,762 km (0.091 R)
• M7: 3,967,186 km (0.098 R)
• M8: 4,533,414 km (0.077 R)
• M9: 5,322,393 km (0.102 R)
• M10: 5,920,934 km (0.083 R)
• M11: 6,466,069 km (0.116 R)
• M12: 7,018,683 km (0.081 R)
• M13: 7,521,332 km (0.091 R)
• M14: 8,480,853 km (0.071 R)
• M15: 11,095,824 km (0.079 R)
• M16: 12,038,739 km (0.113 R)
• M17: 12,838,788 km (0.099 R)
• M18: 13,755,524 km (0.045 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 375.2

Radius: 13.5

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.43 AU - 2.05 AU

Year: 1506 Days

Day: 11.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 22,106,532 km

• M1: 176,077 km (0.109 R)
• M2: 1,600,996 km (0.074 R)
• M3: 2,673,763 km (0.108 R)
• M4: 4,047,520 km (0.039 R)
• M5: 4,835,302 km (0.111 R)
• M6: 5,415,742 km (0.114 R)
• M7: 6,239,578 km (0.114 R)
• M8: 7,694,118 km (0.036 R)
• M9: 8,297,595 km (0.05 R)
• M10: 8,876,240 km (0.087 R)
• M11: 10,425,476 km (0.1 R)
• M12: 11,034,339 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370

Radius: 14.8

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.96 AU - 3.22 AU

Year: 3563 Days

Day: 6.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,106,532 km

• M1: 185,501 km (0.118 R)
• M2: 809,025 km (0.066 R)
• M3: 1,624,034 km (0.09 R)
• M4: 2,360,505 km (0.047 R)
• M5: 3,278,737 km (0.07 R)
• M6: 4,509,478 km (0.094 R)
• M7: 5,231,438 km (0.091 R)
• M8: 7,169,927 km (0.054 R)
• M9: 7,996,305 km (0.12 R)
• M10: 9,694,241 km (0.044 R)
• M11: 12,289,615 km (0.114 R)
• M12: 14,118,149 km (0.073 R)
• M13: 17,867,970 km (0.043 R)
• M14: 18,421,183 km (0.113 R)
• M15: 19,272,394 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.3

Radius: 10.2

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.33 AU - 4.33 AU

Year: 4917 Days

Day: 5.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 22,106,532 km

• M1: 133,591 km (0.105 R)
• M2: 548,725 km (0.117 R)
• M3: 913,893 km (0.092 R)
• M4: 1,231,789 km (0.096 R)
• M5: 2,232,898 km (0.102 R)
• M6: 2,639,505 km (0.09 R)
• M7: 3,265,123 km (0.103 R)
• M8: 4,031,064 km (0.05 R)
• M9: 4,445,002 km (0.102 R)
• M10: 5,946,515 km (0.108 R)
• M11: 7,021,675 km (0.061 R)
• M12: 8,006,927 km (0.11 R)
• M13: 8,889,853 km (0.119 R)
• M14: 12,883,069 km (0.106 R)
• M15: 14,834,574 km (0.074 R)
• M16: 15,824,612 km (0.114 R)
• M17: 16,278,492 km (0.067 R)
• M18: 17,997,073 km (0.099 R)
• M19: 18,429,261 km (0.058 R)
• M20: 18,805,350 km (0.118 R)
• M21: 22,997,381 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.3

Radius: 12.4

Gravity: 5.92 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 3.77 AU - 5.21 AU

Year: 6241 Days

Day: 13.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 22,106,532 km

• M1: 154,235 km (0.079 R)
• M2: 596,746 km (0.117 R)
• M3: 1,108,520 km (0.079 R)
• M4: 1,519,316 km (0.093 R)
• M5: 2,033,633 km (0.047 R)
• M6: 2,607,491 km (0.119 R)
• M7: 3,353,236 km (0.117 R)
• M8: 4,159,569 km (0.045 R)
• M9: 5,482,164 km (0.048 R)
• M10: 7,068,051 km (0.108 R)
• M11: 8,392,889 km (0.073 R)
• M12: 9,201,915 km (0.054 R)
• M13: 9,739,270 km (0.086 R)
• M14: 12,154,229 km (0.065 R)
• M15: 13,190,044 km (0.071 R)
• M16: 13,586,179 km (0.08 R)
• M17: 13,990,243 km (0.116 R)
• M18: 14,461,925 km (0.099 R)
• M19: 15,941,000 km (0.097 R)
• M20: 21,600,586 km (0.08 R)
• M21: 25,746,392 km (0.076 R)
• M22: 27,913,167 km (0.093 R)
• M23: 29,231,723 km (0.088 R)
• M24: 31,790,296 km (0.072 R)
• M25: 33,963,055 km (0.053 R)
• M26: 36,122,650 km (0.099 R)
• M27: 37,123,759 km (0.094 R)
• M28: 38,257,711 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.5

Radius: 13.6

Gravity: 0.47 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 5.61 AU - 5.65 AU

Year: 8763 Days

Day: 5.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 22,106,532 km

• M1: 169,195 km (0.12 R)
• M2: 743,801 km (0.09 R)
• M3: 1,262,456 km (0.074 R)
• M4: 1,987,408 km (0.117 R)
• M5: 3,799,038 km (0.069 R)
• M6: 4,339,685 km (0.088 R)
• M7: 5,473,636 km (0.088 R)
• M8: 7,533,599 km (0.089 R)
• M9: 8,460,059 km (0.069 R)
• M10: 10,985,121 km (0.055 R)
• M11: 15,686,534 km (0.088 R)
• M12: 17,701,018 km (0.104 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: 441 - 13,377 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit