🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.55 AU - 0.67 AU

Year: 313 Days

Day: 39.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 26.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.3

Radius: 8.1

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.75 AU - 0.79 AU

Year: 443 Days

Day: 10.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 69,035,517 km

• M1: 100,679 km (0.053 R)
• M2: 454,628 km (0.115 R)
• M3: 804,238 km (0.113 R)
• M4: 1,463,965 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 896.1

Radius: 8.7

Gravity: 11.84 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.77 AU - 1.19 AU

Year: 636 Days

Day: 14.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 69,035,517 km

• M1: 108,159 km (0.093 R)
• M2: 550,221 km (0.101 R)
• M3: 1,020,407 km (0.104 R)
• M4: 1,301,801 km (0.095 R)
• M5: 1,717,533 km (0.108 R)
• M6: 2,121,896 km (0.119 R)
• M7: 2,426,029 km (0.099 R)
• M8: 2,794,339 km (0.087 R)
• M9: 3,700,453 km (0.078 R)
• M10: 4,082,975 km (0.061 R)
• M11: 4,689,295 km (0.118 R)
• M12: 5,191,495 km (0.095 R)
• M13: 5,942,626 km (0.069 R)
• M14: 7,224,829 km (0.106 R)
• M15: 7,520,285 km (0.077 R)
• M16: 8,257,802 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675.3

Radius: 12.9

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.51 AU - 2.07 AU

Year: 1571 Days

Day: 7.7 Hours

Environment

Temp: -194 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 69,035,517 km

• M1: 160,668 km (0.047 R)
• M2: 685,906 km (0.096 R)
• M3: 1,163,123 km (0.078 R)
• M4: 2,298,422 km (0.07 R)
• M5: 2,951,566 km (0.041 R)
• M6: 4,018,498 km (0.089 R)
• M7: 4,690,342 km (0.09 R)
• M8: 5,589,724 km (0.091 R)
• M9: 6,022,212 km (0.071 R)
• M10: 6,878,211 km (0.102 R)
• M11: 8,010,667 km (0.106 R)
• M12: 8,444,052 km (0.095 R)
• M13: 9,904,576 km (0.12 R)
• M14: 10,851,231 km (0.062 R)
• M15: 12,043,526 km (0.119 R)
• M16: 12,498,005 km (0.051 R)
• M17: 13,082,334 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.6

Radius: 8.3

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.74 AU - 2.32 AU

Year: 1897 Days

Day: 9.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 69,035,517 km

• M1: 103,372 km (0.053 R)
• M2: 382,372 km (0.101 R)
• M3: 689,048 km (0.065 R)
• M4: 1,221,766 km (0.101 R)
• M5: 1,557,763 km (0.099 R)
• M6: 1,975,589 km (0.037 R)
• M7: 2,336,719 km (0.104 R)
• M8: 2,639,355 km (0.038 R)
• M9: 3,221,441 km (0.09 R)
• M10: 4,905,314 km (0.095 R)
• M11: 5,719,875 km (0.108 R)
• M12: 6,250,349 km (0.094 R)
• M13: 6,645,586 km (0.053 R)
• M14: 6,934,460 km (0.075 R)
• M15: 7,852,093 km (0.09 R)
• M16: 8,257,503 km (0.062 R)
• M17: 9,080,890 km (0.052 R)
• M18: 9,467,301 km (0.106 R)
• M19: 10,692,657 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.8

Radius: 14.2

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.95 AU - 3.07 AU

Year: 2609 Days

Day: 14.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 69,035,517 km

• M1: 176,675 km (0.06 R)
• M2: 739,462 km (0.079 R)
• M3: 1,270,086 km (0.076 R)
• M4: 2,003,714 km (0.084 R)
• M5: 2,640,702 km (0.068 R)
• M6: 3,762,386 km (0.113 R)
• M7: 4,307,521 km (0.091 R)
• M8: 4,781,447 km (0.093 R)
• M9: 6,985,622 km (0.103 R)
• M10: 7,643,254 km (0.057 R)
• M11: 8,252,267 km (0.106 R)
• M12: 8,799,945 km (0.108 R)
• M13: 9,371,858 km (0.084 R)
• M14: 10,002,413 km (0.051 R)
• M15: 10,839,263 km (0.034 R)
• M16: 11,571,844 km (0.075 R)
• M17: 12,454,920 km (0.08 R)
• M18: 13,506,743 km (0.063 R)
• M19: 14,793,135 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.7

Radius: 9.8

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 4.42 AU - 4.76 AU

Year: 6451 Days

Day: 11.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,035,517 km

• M1: 121,922 km (0.092 R)
• M2: 648,058 km (0.109 R)
• M3: 1,289,534 km (0.096 R)
• M4: 1,821,504 km (0.112 R)
• M5: 2,342,104 km (0.082 R)
• M6: 5,340,494 km (0.069 R)
• M7: 6,290,590 km (0.075 R)
• M8: 6,805,955 km (0.064 R)
• M9: 8,779,600 km (0.076 R)
• M10: 9,154,791 km (0.089 R)
• M11: 9,698,131 km (0.045 R)
• M12: 10,058,811 km (0.063 R)
• M13: 11,021,174 km (0.081 R)
• M14: 11,547,011 km (0.105 R)
• M15: 14,379,647 km (0.035 R)
• M16: 15,328,695 km (0.092 R)
• M17: 16,658,321 km (0.115 R)
• M18: 17,586,576 km (0.12 R)
• M19: 18,794,728 km (0.115 R)
• M20: 22,056,261 km (0.093 R)
• M21: 22,541,108 km (0.068 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 770.4

Radius: 14.2

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.99 AU - 5.95 AU

Year: 7268 Days

Day: 7.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 69,035,517 km

• M1: 177,124 km (0.066 R)
• M2: 818,600 km (0.027 R)
• M3: 1,618,350 km (0.089 R)
• M4: 2,176,051 km (0.085 R)
• M5: 3,002,878 km (0.107 R)
• M6: 4,368,707 km (0.113 R)
• M7: 5,817,861 km (0.1 R)
• M8: 7,489,917 km (0.074 R)
• M9: 9,060,993 km (0.086 R)
• M10: 10,113,265 km (0.081 R)
• M11: 12,028,417 km (0.097 R)
• M12: 13,128,560 km (0.114 R)
• M13: 15,465,577 km (0.062 R)
• M14: 16,041,978 km (0.066 R)
• M15: 19,215,697 km (0.1 R)
• M16: 22,216,780 km (0.119 R)
• M17: 23,450,065 km (0.12 R)
• M18: 27,238,780 km (0.074 R)
• M19: 28,269,958 km (0.108 R)
• M20: 29,229,778 km (0.114 R)
• M21: 30,310,473 km (0.091 R)
• M22: 32,447,629 km (0.099 R)
• M23: 33,181,855 km (0.096 R)
• M24: 34,683,518 km (0.069 R)
• M25: 36,906,692 km (0.114 R)
• M26: 40,056,625 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 81.1

Radius: 5.9

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.96 AU - 8.92 AU

Year: 14677 Days

Day: 19.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 69,035,517 km

• M1: 73,303 km (0.104 R)
• M2: 683,662 km (0.118 R)
• M3: 950,844 km (0.119 R)
• M4: 1,621,940 km (0.107 R)
• M5: 2,368,583 km (0.089 R)
• M6: 4,239,604 km (0.066 R)
• M7: 5,630,265 km (0.085 R)
• M8: 7,126,992 km (0.074 R)
• M9: 13,917,240 km (0.118 R)
• M10: 16,308,561 km (0.052 R)
• M11: 16,610,300 km (0.117 R)
• M12: 19,093,326 km (0.066 R)
• M13: 24,307,709 km (0.102 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 602.8

Radius: 7.4

Gravity: 11.01 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 7.01 AU - 11.47 AU

Year: 18425 Days

Day: 24.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 140.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 69,035,517 km

• M1: 92,003 km (0.093 R)
• M2: 343,776 km (0.092 R)
• M3: 595,400 km (0.089 R)
• M4: 930,798 km (0.041 R)
• M5: 1,221,766 km (0.087 R)
• M6: 1,573,321 km (0.099 R)
• M7: 4,213,274 km (0.102 R)
• M8: 4,808,973 km (0.117 R)
• M9: 5,535,420 km (0.111 R)
• M10: 6,500,925 km (0.066 R)
• M11: 8,971,085 km (0.105 R)
• M12: 10,768,204 km (0.076 R)
• M13: 11,314,087 km (0.052 R)
• M14: 19,912,973 km (0.05 R)
• M15: 21,484,349 km (0.092 R)
• M16: 21,961,865 km (0.055 R)
• M17: 23,638,408 km (0.053 R)
• M18: 25,504,791 km (0.116 R)
• M19: 26,802,104 km (0.098 R)
• M20: 29,645,361 km (0.091 R)
• M21: 30,356,550 km (0.082 R)
• M22: 30,957,783 km (0.109 R)
• M23: 32,935,318 km (0.085 R)
• M24: 33,954,977 km (0.119 R)
• M25: 34,864,233 km (0.064 R)
• M26: 35,923,236 km (0.07 R)
• M27: 36,325,804 km (0.112 R)
• M28: 41,101,267 km (0.115 R)
• M29: 43,334,913 km (0.117 R)
• M30: 45,179,155 km (0.087 R)
• M31: 46,120,575 km (0.1 R)
• M32: 53,777,443 km (0.11 R)
• M33: 54,834,800 km (0.1 R)
• M34: 60,898,451 km (0.086 R)
• M35: 64,584,692 km (0.106 R)
• M36: 68,828,933 km (0.097 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 179 - 13,974 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit