🌌 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: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.53 AU - 0.73 AU

Year: 328 Days

Day: 26.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.62 AU - 0.68 AU

Year: 344 Days

Day: 38.5 Hours

Environment

Temp: -134 °C

Axial Tilt: 32.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.8

Radius: 12.5

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.89 AU - 1.03 AU

Year: 617 Days

Day: 11 Hours

Environment

Temp: -160 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 83,000,552 km

• M1: 155,432 km (0.113 R)
• M2: 612,154 km (0.1 R)
• M3: 1,135,298 km (0.032 R)
• M4: 1,818,512 km (0.105 R)
• M5: 2,359,009 km (0.066 R)
• M6: 2,841,911 km (0.044 R)
• M7: 3,262,879 km (0.096 R)
• M8: 3,823,422 km (0.12 R)
• M9: 4,654,139 km (0.108 R)
• M10: 5,638,493 km (0.111 R)
• M11: 6,190,210 km (0.089 R)
• M12: 6,673,860 km (0.084 R)
• M13: 7,536,292 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.3

Radius: 13.3

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.98 AU - 1.46 AU

Year: 884 Days

Day: 7.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 83,000,552 km

• M1: 165,455 km (0.081 R)
• M2: 601,982 km (0.09 R)
• M3: 1,091,616 km (0.094 R)
• M4: 1,520,662 km (0.079 R)
• M5: 2,401,345 km (0.113 R)
• M6: 5,712,245 km (0.058 R)
• M7: 6,149,968 km (0.03 R)
• M8: 6,929,673 km (0.089 R)
• M9: 7,379,962 km (0.074 R)
• M10: 8,287,124 km (0.085 R)
• M11: 8,987,391 km (0.118 R)
• M12: 9,668,660 km (0.114 R)
• M13: 10,201,976 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.6

Radius: 8.8

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 2.69 AU - 3.15 AU

Year: 3273 Days

Day: 12.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 83,000,552 km

• M1: 109,506 km (0.109 R)
• M2: 558,898 km (0.075 R)
• M3: 1,164,619 km (0.11 R)
• M4: 1,857,856 km (0.103 R)
• M5: 2,453,255 km (0.105 R)
• M6: 2,990,013 km (0.053 R)
• M7: 3,374,030 km (0.12 R)
• M8: 4,994,475 km (0.027 R)
• M9: 5,403,176 km (0.077 R)
• M10: 6,586,196 km (0.102 R)
• M11: 7,428,731 km (0.106 R)
• M12: 8,520,646 km (0.106 R)
• M13: 10,736,041 km (0.098 R)
• M14: 11,019,678 km (0.065 R)
• M15: 12,553,057 km (0.073 R)
• M16: 13,886,722 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 318.8

Radius: 11.5

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.14 AU - 4.74 AU

Year: 5130 Days

Day: 5.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 83,000,552 km

• M1: 144,661 km (0.075 R)
• M2: 673,639 km (0.044 R)
• M3: 1,073,066 km (0.094 R)
• M4: 1,493,286 km (0.069 R)
• M5: 3,030,404 km (0.108 R)
• M6: 3,973,469 km (0.099 R)
• M7: 4,479,259 km (0.11 R)
• M8: 4,904,566 km (0.118 R)
• M9: 5,357,100 km (0.094 R)
• M10: 6,031,637 km (0.082 R)
• M11: 6,823,009 km (0.068 R)
• M12: 7,950,229 km (0.082 R)
• M13: 11,200,243 km (0.085 R)
• M14: 14,984,620 km (0.117 R)
• M15: 15,564,312 km (0.088 R)
• M16: 18,033,275 km (0.039 R)
• M17: 22,413,950 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.8

Radius: 14

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 3.75 AU - 4.91 AU

Year: 5911 Days

Day: 14.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 83,000,552 km

• M1: 174,132 km (0.113 R)
• M2: 905,516 km (0.049 R)
• M3: 1,450,800 km (0.044 R)
• M4: 1,886,280 km (0.087 R)
• M5: 2,505,016 km (0.03 R)
• M6: 3,846,909 km (0.051 R)
• M7: 5,162,174 km (0.109 R)
• M8: 5,822,648 km (0.117 R)
• M9: 6,758,981 km (0.12 R)
• M10: 7,448,777 km (0.116 R)
• M11: 8,112,842 km (0.093 R)
• M12: 8,969,440 km (0.09 R)
• M13: 9,968,005 km (0.081 R)
• M14: 11,903,951 km (0.088 R)
• M15: 13,768,390 km (0.112 R)
• M16: 14,878,705 km (0.113 R)
• M17: 18,131,262 km (0.089 R)
• M18: 20,456,761 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 317.2

Radius: 6.4

Gravity: 7.74 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 6.52 AU - 8.14 AU

Year: 13019 Days

Day: 21 Hours

Environment

Temp: -215 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 83,000,552 km

• M1: 122,371 km (0.116 R)
• M2: 482,453 km (0.104 R)
• M3: 855,251 km (0.025 R)
• M4: 1,133,802 km (0.118 R)
• M5: 1,525,749 km (0.062 R)
• M6: 1,955,693 km (0.083 R)
• M7: 2,173,208 km (0.072 R)
• M8: 3,302,971 km (0.074 R)
• M9: 3,864,861 km (0.058 R)
• M10: 5,177,134 km (0.104 R)
• M11: 5,899,691 km (0.105 R)
• M12: 6,650,224 km (0.086 R)
• M13: 7,624,555 km (0.098 R)
• M14: 7,913,578 km (0.038 R)
• M15: 8,124,511 km (0.066 R)
• M16: 9,564,989 km (0.089 R)
• M17: 10,245,809 km (0.1 R)
• M18: 10,547,248 km (0.086 R)
• M19: 11,115,271 km (0.092 R)
• M20: 11,433,466 km (0.106 R)
• M21: 14,203,121 km (0.097 R)
• M22: 16,144,153 km (0.113 R)
• M23: 16,621,371 km (0.026 R)
• M24: 22,255,226 km (0.08 R)
• M25: 24,861,670 km (0.08 R)
• M26: 25,406,356 km (0.117 R)
• M27: 26,238,120 km (0.101 R)
• M28: 27,279,321 km (0.069 R)
• M29: 27,761,475 km (0.07 R)
• M30: 28,053,640 km (0.092 R)
• M31: 28,643,953 km (0.109 R)
• M32: 30,671,453 km (0.114 R)
• M33: 43,424,073 km (0.088 R)
• M34: 43,686,318 km (0.053 R)
• M35: 43,949,461 km (0.051 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 894.5

Radius: 5.9

Gravity: 25.7 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 8.5 AU - 8.56 AU

Year: 16343 Days

Day: 20.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 83,000,552 km

• M1: 73,453 km (0.112 R)
• M2: 285,732 km (0.048 R)
• M3: 579,393 km (0.069 R)
• M4: 785,090 km (0.094 R)
• M5: 1,052,421 km (0.069 R)
• M6: 1,518,718 km (0.104 R)
• M7: 2,113,519 km (0.117 R)
• M8: 3,811,754 km (0.055 R)
• M9: 5,847,033 km (0.111 R)
• M10: 7,095,726 km (0.11 R)
• M11: 8,460,956 km (0.026 R)
• M12: 9,649,661 km (0.048 R)
• M13: 10,641,645 km (0.12 R)
• M14: 11,193,511 km (0.054 R)
• M15: 13,171,045 km (0.111 R)
• M16: 14,023,304 km (0.099 R)
• M17: 15,680,699 km (0.03 R)
• M18: 17,887,717 km (0.117 R)
• M19: 18,843,348 km (0.025 R)
• M20: 19,468,966 km (0.102 R)
• M21: 21,914,293 km (0.077 R)
• M22: 29,500,102 km (0.044 R)
• M23: 30,221,762 km (0.116 R)
• M24: 32,457,053 km (0.05 R)
• M25: 35,067,536 km (0.103 R)
• M26: 44,512,996 km (0.066 R)
• M27: 45,621,217 km (0.09 R)
• M28: 49,898,968 km (0.111 R)
• M29: 50,579,938 km (0.087 R)
• M30: 55,703,515 km (0.117 R)
• M31: 59,431,644 km (0.093 R)
• M32: 60,389,070 km (0.108 R)
• M33: 60,968,463 km (0.092 R)
• M34: 68,421,279 km (0.06 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 998.2

Radius: 8

Gravity: 15.6 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 8.26 AU - 10.52 AU

Year: 18876 Days

Day: 19.3 Hours

Environment

Temp: -234 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 83,000,552 km

• M1: 99,483 km (0.049 R)
• M2: 373,695 km (0.092 R)
• M3: 813,663 km (0.069 R)
• M4: 1,490,294 km (0.066 R)
• M5: 2,206,120 km (0.088 R)
• M6: 2,498,135 km (0.113 R)
• M7: 2,893,073 km (0.043 R)
• M8: 4,163,907 km (0.112 R)
• M9: 4,541,492 km (0.113 R)
• M10: 5,208,699 km (0.102 R)
• M11: 6,829,592 km (0.074 R)
• M12: 8,011,864 km (0.091 R)
• M13: 9,852,665 km (0.07 R)
• M14: 11,823,468 km (0.054 R)
• M15: 12,441,606 km (0.091 R)
• M16: 16,781,740 km (0.083 R)
• M17: 21,831,565 km (0.078 R)
• M18: 23,076,968 km (0.114 R)
• M19: 24,150,482 km (0.11 R)
• M20: 30,529,335 km (0.098 R)
• M21: 34,240,709 km (0.108 R)
• M22: 37,799,343 km (0.079 R)
• M23: 38,242,302 km (0.076 R)
• M24: 47,844,690 km (0.109 R)
• M25: 54,502,095 km (0.074 R)
• M26: 59,732,186 km (0.11 R)
• M27: 62,571,254 km (0.058 R)
• M28: 67,862,830 km (0.078 R)
• M29: 77,886,635 km (0.077 R)
• M30: 78,844,062 km (0.054 R)
• M31: 80,294,862 km (0.11 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 291 - 18,941 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit