🌌 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: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.53 AU - 0.53 AU

Year: 249 Days

Day: 37 Hours

Environment

Temp: -121 °C

Axial Tilt: 18.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.9

Radius: 8.2

Gravity: 12.95 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.83 AU - 0.91 AU

Year: 524 Days

Day: 14.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 114 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,882,651 km

• M1: 102,026 km (0.116 R)
• M2: 417,378 km (0.118 R)
• M3: 904,768 km (0.091 R)
• M4: 1,243,458 km (0.064 R)
• M5: 1,785,899 km (0.079 R)
• M6: 2,277,478 km (0.072 R)
• M7: 3,199,599 km (0.095 R)
• M8: 3,883,710 km (0.097 R)
• M9: 4,427,349 km (0.093 R)
• M10: 4,693,633 km (0.098 R)
• M11: 5,020,804 km (0.1 R)
• M12: 5,812,775 km (0.057 R)
• M13: 6,171,062 km (0.042 R)
• M14: 6,504,216 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783.8

Radius: 8.7

Gravity: 10.36 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.19 AU - 1.89 AU

Year: 1234 Days

Day: 12.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 72,882,651 km

• M1: 113,395 km (0.087 R)
• M2: 399,426 km (0.103 R)
• M3: 1,001,408 km (0.112 R)
• M4: 1,299,407 km (0.079 R)
• M5: 1,629,570 km (0.063 R)
• M6: 2,425,580 km (0.094 R)
• M7: 2,904,143 km (0.077 R)
• M8: 3,262,131 km (0.077 R)
• M9: 3,537,990 km (0.031 R)
• M10: 4,190,087 km (0.077 R)
• M11: 4,461,308 km (0.117 R)
• M12: 4,900,078 km (0.109 R)
• M13: 5,367,422 km (0.113 R)
• M14: 6,678,797 km (0.085 R)
• M15: 7,726,431 km (0.08 R)
• M16: 8,219,655 km (0.052 R)
• M17: 9,637,544 km (0.109 R)
• M18: 10,048,190 km (0.068 R)
• M19: 11,040,472 km (0.096 R)
• M20: 11,880,165 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.7

Radius: 15

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.35 AU - 1.89 AU

Year: 1331 Days

Day: 10.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,882,651 km

• M1: 186,698 km (0.114 R)
• M2: 1,157,888 km (0.1 R)
• M3: 1,985,313 km (0.084 R)
• M4: 2,506,961 km (0.119 R)
• M5: 3,356,079 km (0.106 R)
• M6: 4,029,269 km (0.116 R)
• M7: 5,476,479 km (0.086 R)
• M8: 6,103,593 km (0.101 R)
• M9: 6,626,737 km (0.114 R)
• M10: 7,179,651 km (0.101 R)
• M11: 7,763,381 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.9

Radius: 13.4

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 1.77 AU - 2.85 AU

Year: 2267 Days

Day: 6.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 72,882,651 km

• M1: 166,652 km (0.078 R)
• M2: 585,376 km (0.072 R)
• M3: 1,044,941 km (0.091 R)
• M4: 1,682,228 km (0.092 R)
• M5: 2,104,992 km (0.045 R)
• M6: 2,837,423 km (0.113 R)
• M7: 3,480,544 km (0.1 R)
• M8: 4,159,120 km (0.106 R)
• M9: 5,106,823 km (0.091 R)
• M10: 5,806,941 km (0.049 R)
• M11: 6,708,417 km (0.098 R)
• M12: 7,701,298 km (0.098 R)
• M13: 8,233,418 km (0.117 R)
• M14: 8,890,601 km (0.055 R)
• M15: 9,725,358 km (0.1 R)
• M16: 14,096,757 km (0.11 R)
• M17: 14,846,990 km (0.07 R)
• M18: 17,738,119 km (0.104 R)
• M19: 18,668,617 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.7

Radius: 9.5

Gravity: 7.74 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 5.16 AU - 5.8 AU

Year: 8283 Days

Day: 8.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 72,882,651 km

• M1: 118,332 km (0.115 R)
• M2: 437,723 km (0.075 R)
• M3: 846,874 km (0.036 R)
• M4: 1,163,871 km (0.097 R)
• M5: 2,131,321 km (0.041 R)
• M6: 4,412,539 km (0.106 R)
• M7: 5,141,529 km (0.068 R)
• M8: 6,259,025 km (0.084 R)
• M9: 7,412,275 km (0.087 R)
• M10: 7,894,878 km (0.106 R)
• M11: 9,656,243 km (0.092 R)
• M12: 11,558,679 km (0.103 R)
• M13: 13,579,896 km (0.113 R)
• M14: 14,364,537 km (0.084 R)
• M15: 16,968,587 km (0.103 R)
• M16: 17,665,863 km (0.092 R)
• M17: 18,747,156 km (0.099 R)
• M18: 21,200,861 km (0.1 R)
• M19: 22,009,587 km (0.09 R)
• M20: 23,091,479 km (0.09 R)
• M21: 26,922,979 km (0.12 R)
• M22: 31,887,385 km (0.079 R)
• M23: 32,734,557 km (0.043 R)
• M24: 33,379,773 km (0.1 R)
• M25: 38,730,141 km (0.039 R)
• M26: 41,295,295 km (0.061 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 578.1

Radius: 6.7

Gravity: 12.88 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 7 AU - 10.34 AU

Year: 16483 Days

Day: 20.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 72,882,651 km

• M1: 93,798 km (0.114 R)
• M2: 327,619 km (0.079 R)
• M3: 603,627 km (0.075 R)
• M4: 1,023,100 km (0.093 R)
• M5: 1,381,836 km (0.039 R)
• M6: 1,839,306 km (0.114 R)
• M7: 3,203,638 km (0.117 R)
• M8: 3,547,115 km (0.109 R)
• M9: 3,973,619 km (0.117 R)
• M10: 7,464,485 km (0.06 R)
• M11: 10,078,409 km (0.084 R)
• M12: 10,700,586 km (0.108 R)
• M13: 13,113,749 km (0.111 R)
• M14: 17,579,246 km (0.09 R)
• M15: 18,066,785 km (0.091 R)
• M16: 18,646,776 km (0.062 R)
• M17: 20,461,548 km (0.027 R)
• M18: 20,730,076 km (0.076 R)
• M19: 23,841,113 km (0.064 R)
• M20: 27,683,984 km (0.047 R)
• M21: 29,466,592 km (0.086 R)
• M22: 29,694,579 km (0.107 R)
• M23: 33,382,017 km (0.042 R)
• M24: 40,514,395 km (0.106 R)
• M25: 43,394,453 km (0.045 R)
• M26: 48,757,836 km (0.095 R)
• M27: 50,367,658 km (0.098 R)
• M28: 54,033,405 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 862.2

Radius: 4.5

Gravity: 42.58 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 7.79 AU - 9.71 AU

Year: 16712 Days

Day: 20.4 Hours

Environment

Temp: -228 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 72,882,651 km

• M1: 55,950 km (0.068 R)
• M2: 247,285 km (0.102 R)
• M3: 874,549 km (0.106 R)
• M4: 1,365,679 km (0.104 R)
• M5: 2,556,029 km (0.114 R)
• M6: 3,151,728 km (0.073 R)
• M7: 6,648,129 km (0.118 R)
• M8: 10,236,982 km (0.056 R)
• M9: 11,145,490 km (0.093 R)
• M10: 12,845,520 km (0.025 R)
• M11: 13,260,954 km (0.114 R)
• M12: 14,265,354 km (0.112 R)
• M13: 15,944,291 km (0.074 R)
• M14: 21,472,830 km (0.107 R)
• M15: 26,453,242 km (0.111 R)
• M16: 28,503,331 km (0.064 R)
• M17: 29,209,583 km (0.12 R)
• M18: 31,026,150 km (0.096 R)
• M19: 32,151,425 km (0.057 R)
• M20: 34,749,042 km (0.068 R)
• M21: 45,415,071 km (0.086 R)
• M22: 45,574,543 km (0.104 R)
• M23: 46,216,467 km (0.066 R)
• M24: 49,179,402 km (0.093 R)
• M25: 51,051,171 km (0.108 R)
• M26: 68,181,025 km (0.08 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 374 - 15,285 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit