🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.5 AU - 0.66 AU

Year: 290 Days

Day: 31.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 23 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 381.9

Radius: 13.2

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.8 AU - 1.16 AU

Year: 636 Days

Day: 7.6 Hours

Environment

Temp: -152 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,998,924 km

• M1: 164,408 km (0.118 R)
• M2: 858,542 km (0.104 R)
• M3: 1,352,963 km (0.096 R)
• M4: 1,893,011 km (0.106 R)
• M5: 2,450,114 km (0.115 R)
• M6: 3,048,206 km (0.078 R)
• M7: 4,628,857 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.9

Radius: 9.7

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.39 AU - 1.63 AU

Year: 1217 Days

Day: 5.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,998,924 km

• M1: 121,473 km (0.113 R)
• M2: 545,733 km (0.09 R)
• M3: 905,815 km (0.037 R)
• M4: 1,334,862 km (0.116 R)
• M5: 2,249,054 km (0.093 R)
• M6: 3,358,323 km (0.1 R)
• M7: 3,996,507 km (0.116 R)
• M8: 4,336,992 km (0.106 R)
• M9: 6,654,861 km (0.044 R)
• M10: 7,179,651 km (0.083 R)
• M11: 8,511,969 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.2

Radius: 14.1

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.48 AU - 1.62 AU

Year: 1266 Days

Day: 8.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,998,924 km

• M1: 175,478 km (0.072 R)
• M2: 665,262 km (0.064 R)
• M3: 1,128,866 km (0.111 R)
• M4: 1,799,363 km (0.112 R)
• M5: 2,399,101 km (0.05 R)
• M6: 2,889,632 km (0.089 R)
• M7: 3,736,656 km (0.12 R)
• M8: 5,022,150 km (0.119 R)
• M9: 8,052,704 km (0.077 R)
• M10: 9,044,837 km (0.092 R)
• M11: 9,889,466 km (0.076 R)
• M12: 11,413,570 km (0.058 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 524

Radius: 12.7

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 4.39 AU - 5.99 AU

Year: 7756 Days

Day: 9.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 53,998,924 km

• M1: 158,125 km (0.092 R)
• M2: 975,528 km (0.065 R)
• M3: 1,684,322 km (0.088 R)
• M4: 2,605,845 km (0.12 R)
• M5: 3,383,305 km (0.112 R)
• M6: 4,519,800 km (0.066 R)
• M7: 5,582,095 km (0.089 R)
• M8: 6,189,014 km (0.074 R)
• M9: 6,839,465 km (0.082 R)
• M10: 7,535,245 km (0.1 R)
• M11: 8,481,002 km (0.032 R)
• M12: 8,940,118 km (0.106 R)
• M13: 12,263,285 km (0.081 R)
• M14: 12,960,412 km (0.033 R)
• M15: 17,178,323 km (0.105 R)
• M16: 18,326,038 km (0.075 R)
• M17: 19,741,234 km (0.083 R)
• M18: 21,843,084 km (0.046 R)
• M19: 23,924,739 km (0.111 R)
• M20: 25,269,773 km (0.115 R)
• M21: 26,223,310 km (0.057 R)
• M22: 27,380,898 km (0.077 R)
• M23: 28,110,038 km (0.078 R)
• M24: 29,133,737 km (0.078 R)
• M25: 31,851,481 km (0.116 R)
• M26: 35,266,651 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273

Radius: 8.9

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 5.6 AU - 5.8 AU

Year: 8927 Days

Day: 11.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 53,998,924 km

• M1: 110,852 km (0.097 R)
• M2: 517,758 km (0.107 R)
• M3: 930,499 km (0.04 R)
• M4: 1,282,054 km (0.101 R)
• M5: 1,695,692 km (0.101 R)
• M6: 2,029,295 km (0.05 R)
• M7: 2,390,125 km (0.051 R)
• M8: 2,702,037 km (0.098 R)
• M9: 3,559,831 km (0.083 R)
• M10: 4,434,230 km (0.075 R)
• M11: 5,386,870 km (0.027 R)
• M12: 6,307,046 km (0.095 R)
• M13: 7,045,761 km (0.115 R)
• M14: 8,735,319 km (0.098 R)
• M15: 9,186,207 km (0.112 R)
• M16: 9,523,849 km (0.083 R)
• M17: 10,134,807 km (0.074 R)
• M18: 12,024,527 km (0.089 R)
• M19: 12,947,097 km (0.114 R)
• M20: 13,318,399 km (0.101 R)
• M21: 17,113,548 km (0.099 R)
• M22: 17,432,341 km (0.068 R)
• M23: 18,612,967 km (0.07 R)
• M24: 19,154,362 km (0.078 R)
• M25: 19,498,138 km (0.11 R)
• M26: 20,697,763 km (0.102 R)
• M27: 22,246,699 km (0.058 R)
• M28: 22,703,122 km (0.117 R)
• M29: 27,442,533 km (0.034 R)
• M30: 31,070,131 km (0.111 R)
• M31: 32,314,786 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 52.2

Radius: 5.1

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 7 AU - 7.08 AU

Year: 12254 Days

Day: 16.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,998,924 km

• M1: 64,925 km (0.051 R)
• M2: 1,024,745 km (0.072 R)
• M3: 1,593,666 km (0.07 R)
• M4: 4,685,705 km (0.094 R)
• M5: 6,735,345 km (0.111 R)
• M6: 8,797,851 km (0.052 R)
• M7: 10,210,653 km (0.075 R)
• M8: 10,991,853 km (0.116 R)
• M9: 14,876,012 km (0.11 R)
• M10: 20,023,525 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 250.9

Radius: 5.1

Gravity: 9.65 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 8.94 AU - 10.42 AU

Year: 19757 Days

Day: 25 Hours

Environment

Temp: -239 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 53,998,924 km

• M1: 75,697 km (0.046 R)
• M2: 367,562 km (0.104 R)
• M3: 548,725 km (0.055 R)
• M4: 719,715 km (0.089 R)
• M5: 989,740 km (0.078 R)
• M6: 1,563,747 km (0.097 R)
• M7: 1,949,260 km (0.046 R)
• M8: 2,999,737 km (0.105 R)
• M9: 3,262,879 km (0.058 R)
• M10: 3,862,916 km (0.11 R)
• M11: 4,116,784 km (0.094 R)
• M12: 4,880,631 km (0.074 R)
• M13: 6,447,818 km (0.114 R)
• M14: 9,535,368 km (0.103 R)
• M15: 14,268,645 km (0.12 R)
• M16: 14,739,130 km (0.118 R)
• M17: 19,695,607 km (0.087 R)
• M18: 22,635,953 km (0.116 R)
• M19: 28,199,498 km (0.116 R)
• M20: 31,351,076 km (0.089 R)
• M21: 33,656,379 km (0.075 R)
• M22: 39,513,585 km (0.117 R)
• M23: 39,908,972 km (0.105 R)
• M24: 40,573,785 km (0.114 R)
• M25: 42,062,284 km (0.066 R)
• M26: 45,435,716 km (0.06 R)
• M27: 47,931,307 km (0.076 R)
• M28: 53,514,898 km (0.118 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: 361 - 14,507 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit