🌌 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: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.53 AU - 0.77 AU

Year: 344 Days

Day: 45.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.4

Radius: 9.6

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.94 AU - 1.16 AU

Year: 706 Days

Day: 13.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 70,344,008 km

• M1: 119,379 km (0.115 R)
• M2: 424,559 km (0.1 R)
• M3: 934,538 km (0.094 R)
• M4: 1,479,822 km (0.072 R)
• M5: 2,291,839 km (0.07 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 580.9

Radius: 11.6

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.1 AU - 1.24 AU

Year: 830 Days

Day: 9.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,344,008 km

• M1: 147,803 km (0.101 R)
• M2: 636,389 km (0.094 R)
• M3: 1,037,012 km (0.026 R)
• M4: 1,437,037 km (0.117 R)
• M5: 1,817,913 km (0.078 R)
• M6: 2,267,156 km (0.113 R)
• M7: 2,790,299 km (0.073 R)
• M8: 3,157,413 km (0.111 R)
• M9: 3,900,764 km (0.105 R)
• M10: 4,266,980 km (0.081 R)
• M11: 5,715,686 km (0.101 R)
• M12: 6,479,084 km (0.079 R)
• M13: 7,286,463 km (0.071 R)
• M14: 7,797,490 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604

Radius: 11.9

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 1.35 AU - 2.13 AU

Year: 1506 Days

Day: 14.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,344,008 km

• M1: 148,850 km (0.105 R)
• M2: 553,811 km (0.107 R)
• M3: 1,199,326 km (0.083 R)
• M4: 1,794,426 km (0.095 R)
• M5: 2,455,350 km (0.096 R)
• M6: 2,870,783 km (0.113 R)
• M7: 5,028,732 km (0.043 R)
• M8: 5,749,196 km (0.116 R)
• M9: 8,646,159 km (0.109 R)
• M10: 11,139,805 km (0.096 R)
• M11: 12,326,715 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.6

Radius: 12.6

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.93 AU - 2.59 AU

Year: 2229 Days

Day: 14.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 70,344,008 km

• M1: 156,629 km (0.07 R)
• M2: 578,645 km (0.063 R)
• M3: 1,242,560 km (0.072 R)
• M4: 1,818,213 km (0.089 R)
• M5: 2,230,953 km (0.049 R)
• M6: 3,812,502 km (0.097 R)
• M7: 4,222,549 km (0.118 R)
• M8: 4,829,468 km (0.093 R)
• M9: 6,218,634 km (0.107 R)
• M10: 6,683,434 km (0.04 R)
• M11: 7,339,272 km (0.1 R)
• M12: 9,069,820 km (0.103 R)
• M13: 9,669,109 km (0.095 R)
• M14: 11,245,422 km (0.096 R)
• M15: 11,665,044 km (0.09 R)
• M16: 12,214,217 km (0.094 R)
• M17: 14,273,582 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 978

Radius: 9.5

Gravity: 10.84 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 2.02 AU - 2.7 AU

Year: 2378 Days

Day: 5.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 70,344,008 km

• M1: 118,182 km (0.11 R)
• M2: 799,601 km (0.093 R)
• M3: 1,221,915 km (0.041 R)
• M4: 2,229,756 km (0.086 R)
• M5: 2,616,766 km (0.102 R)
• M6: 5,543,947 km (0.116 R)
• M7: 7,214,507 km (0.106 R)
• M8: 8,568,068 km (0.112 R)
• M9: 9,559,753 km (0.099 R)
• M10: 13,267,237 km (0.088 R)
• M11: 13,637,043 km (0.112 R)
• M12: 15,899,561 km (0.052 R)
• M13: 16,688,540 km (0.101 R)
• M14: 17,393,146 km (0.105 R)
• M15: 19,626,343 km (0.066 R)
• M16: 20,411,433 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 958.4

Radius: 4.9

Gravity: 39.92 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 6.59 AU - 7.23 AU

Year: 11916 Days

Day: 24.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 70,344,008 km

• M1: 60,886 km (0.064 R)
• M2: 280,795 km (0.091 R)
• M3: 728,542 km (0.104 R)
• M4: 893,099 km (0.09 R)
• M5: 1,232,686 km (0.085 R)
• M6: 1,454,390 km (0.078 R)
• M7: 2,127,282 km (0.11 R)
• M8: 2,964,132 km (0.03 R)
• M9: 3,577,035 km (0.111 R)
• M10: 5,049,975 km (0.067 R)
• M11: 5,619,644 km (0.08 R)
• M12: 6,885,840 km (0.063 R)
• M13: 8,476,215 km (0.113 R)
• M14: 11,033,591 km (0.069 R)
• M15: 11,504,675 km (0.119 R)
• M16: 15,328,695 km (0.086 R)
• M17: 16,138,469 km (0.111 R)
• M18: 16,976,516 km (0.099 R)
• M19: 17,288,278 km (0.083 R)
• M20: 18,738,928 km (0.115 R)
• M21: 19,071,933 km (0.108 R)
• M22: 20,008,117 km (0.045 R)
• M23: 23,865,049 km (0.116 R)
• M24: 24,453,567 km (0.05 R)
• M25: 24,651,934 km (0.041 R)
• M26: 25,253,317 km (0.115 R)
• M27: 27,116,110 km (0.096 R)
• M28: 28,081,016 km (0.082 R)
• M29: 32,767,469 km (0.076 R)
• M30: 33,372,293 km (0.102 R)
• M31: 33,738,808 km (0.044 R)
• M32: 35,611,773 km (0.114 R)
• M33: 40,942,843 km (0.096 R)
• M34: 41,785,677 km (0.115 R)
• M35: 44,383,743 km (0.057 R)
• M36: 49,264,673 km (0.034 R)
• M37: 50,378,130 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 13.8

Radius: 5.9

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 6.56 AU - 10.18 AU

Year: 15885 Days

Day: 15.7 Hours

Environment

Temp: -237 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 70,344,008 km

• M1: 73,453 km (0.059 R)
• M2: 441,164 km (0.087 R)
• M3: 2,531,196 km (0.118 R)
• M4: 2,920,150 km (0.062 R)
• M5: 3,613,537 km (0.107 R)
• M6: 4,028,222 km (0.107 R)
• M7: 4,308,269 km (0.051 R)
• M8: 6,618,808 km (0.089 R)
• M9: 9,401,628 km (0.072 R)
• M10: 10,331,379 km (0.111 R)
• M11: 10,971,508 km (0.064 R)
• M12: 11,242,579 km (0.119 R)
• M13: 12,206,438 km (0.031 R)
• M14: 12,964,451 km (0.115 R)
• M15: 17,179,520 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 764.1

Radius: 3.2

Gravity: 74.62 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 7.28 AU - 10.98 AU

Year: 18097 Days

Day: 15.4 Hours

Environment

Temp: -237 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 70,344,008 km

• M1: 39,793 km (0.053 R)
• M2: 183,856 km (0.119 R)
• M3: 288,873 km (0.09 R)
• M4: 415,284 km (0.069 R)
• M5: 537,954 km (0.111 R)
• M6: 675,434 km (0.066 R)
• M7: 1,178,831 km (0.117 R)
• M8: 1,642,285 km (0.118 R)
• M9: 2,643,394 km (0.11 R)
• M10: 3,017,239 km (0.103 R)
• M11: 3,993,366 km (0.101 R)
• M12: 4,383,068 km (0.068 R)
• M13: 6,029,841 km (0.082 R)
• M14: 6,282,213 km (0.119 R)
• M15: 6,497,933 km (0.079 R)
• M16: 8,098,182 km (0.086 R)
• M17: 10,716,593 km (0.084 R)
• M18: 12,315,645 km (0.085 R)
• M19: 12,653,437 km (0.078 R)
• M20: 17,119,083 km (0.068 R)
• M21: 20,023,525 km (0.073 R)
• M22: 20,584,667 km (0.099 R)
• M23: 27,009,746 km (0.111 R)
• M24: 31,167,520 km (0.112 R)
• M25: 32,047,155 km (0.082 R)
• M26: 40,425,085 km (0.063 R)
• M27: 49,469,323 km (0.062 R)
• M28: 49,979,601 km (0.033 R)
• M29: 52,406,827 km (0.113 R)
• M30: 55,458,324 km (0.091 R)
• M31: 56,193,149 km (0.072 R)
• M32: 62,306,915 km (0.03 R)
• M33: 65,115,465 km (0.099 R)
• M34: 68,007,342 km (0.119 R)
• M35: 68,217,078 km (0.107 R)
• M36: 71,199,461 km (0.111 R)
• M37: 71,849,613 km (0.114 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 532.9

Radius: 5

Gravity: 21.32 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 7.82 AU - 11.8 AU

Year: 20156 Days

Day: 17 Hours

Environment

Temp: -221 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 70,344,008 km

• M1: 62,233 km (0.051 R)
• M2: 242,947 km (0.079 R)
• M3: 492,925 km (0.065 R)
• M4: 667,655 km (0.089 R)
• M5: 1,213,837 km (0.11 R)
• M6: 1,689,110 km (0.113 R)
• M7: 2,430,517 km (0.058 R)
• M8: 3,075,583 km (0.08 R)
• M9: 3,828,060 km (0.09 R)
• M10: 4,328,166 km (0.075 R)
• M11: 4,662,218 km (0.118 R)
• M12: 5,158,434 km (0.106 R)
• M13: 5,728,402 km (0.096 R)
• M14: 6,509,452 km (0.098 R)
• M15: 7,312,643 km (0.114 R)
• M16: 9,330,419 km (0.055 R)
• M17: 9,550,627 km (0.109 R)
• M18: 10,001,515 km (0.075 R)
• M19: 12,012,260 km (0.113 R)
• M20: 12,537,498 km (0.048 R)
• M21: 13,988,897 km (0.028 R)
• M22: 15,091,732 km (0.107 R)
• M23: 16,812,258 km (0.05 R)
• M24: 25,323,329 km (0.059 R)
• M25: 26,185,611 km (0.094 R)
• M26: 27,403,039 km (0.116 R)
• M27: 36,725,380 km (0.094 R)
• M28: 50,786,981 km (0.081 R)
• M29: 53,550,054 km (0.093 R)
• M30: 69,713,356 km (0.085 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 187 - 13,301 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit