🌌 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: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.5 AU - 0.56 AU

Year: 249 Days

Day: 38.7 Hours

Environment

Temp: -115 °C

Axial Tilt: 4.2 °

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: 790.5

Radius: 13

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.87 AU - 1.09 AU

Year: 626 Days

Day: 6.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 59,549,869 km

• M1: 161,865 km (0.1 R)
• M2: 762,201 km (0.104 R)
• M3: 1,426,117 km (0.092 R)
• M4: 2,207,616 km (0.039 R)
• M5: 2,814,834 km (0.087 R)
• M6: 3,653,180 km (0.077 R)
• M7: 4,603,575 km (0.101 R)
• M8: 5,919,737 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135.1

Radius: 11.8

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.77 AU - 1.27 AU

Year: 665 Days

Day: 6.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 59,549,869 km

• M1: 146,756 km (0.114 R)
• M2: 684,560 km (0.082 R)
• M3: 1,071,270 km (0.098 R)
• M4: 1,943,276 km (0.104 R)
• M5: 2,416,754 km (0.059 R)
• M6: 3,240,739 km (0.118 R)
• M7: 3,610,395 km (0.069 R)
• M8: 3,996,208 km (0.034 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985.6

Radius: 10.4

Gravity: 9.11 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.22 AU - 1.36 AU

Year: 946 Days

Day: 12.1 Hours

Environment

Temp: -169 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 59,549,869 km

• M1: 130,001 km (0.074 R)
• M2: 486,492 km (0.114 R)
• M3: 861,684 km (0.089 R)
• M4: 1,365,230 km (0.088 R)
• M5: 1,839,455 km (0.077 R)
• M6: 2,240,677 km (0.118 R)
• M7: 3,322,120 km (0.111 R)
• M8: 3,714,515 km (0.12 R)
• M9: 4,240,052 km (0.084 R)
• M10: 5,179,677 km (0.079 R)
• M11: 5,563,395 km (0.066 R)
• M12: 6,594,873 km (0.047 R)
• M13: 7,021,974 km (0.084 R)
• M14: 7,366,947 km (0.108 R)
• M15: 7,801,080 km (0.095 R)
• M16: 8,720,808 km (0.057 R)
• M17: 9,412,399 km (0.092 R)
• M18: 10,613,819 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.5

Radius: 14.7

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.7 AU - 1.98 AU

Year: 1612 Days

Day: 7.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 179.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,549,869 km

• M1: 182,809 km (0.098 R)
• M2: 798,404 km (0.09 R)
• M3: 1,313,769 km (0.074 R)
• M4: 2,917,906 km (0.046 R)
• M5: 3,554,146 km (0.119 R)
• M6: 5,145,269 km (0.11 R)
• M7: 5,913,005 km (0.098 R)
• M8: 6,688,521 km (0.094 R)
• M9: 9,685,864 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.7

Radius: 14.7

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.31 AU - 2.87 AU

Year: 2691 Days

Day: 9.1 Hours

Environment

Temp: -191 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 59,549,869 km

• M1: 184,305 km (0.094 R)
• M2: 776,263 km (0.11 R)
• M3: 1,234,631 km (0.101 R)
• M4: 2,616,168 km (0.111 R)
• M5: 3,550,855 km (0.118 R)
• M6: 4,182,008 km (0.088 R)
• M7: 5,718,528 km (0.049 R)
• M8: 6,357,760 km (0.09 R)
• M9: 7,519,387 km (0.106 R)
• M10: 8,786,631 km (0.098 R)
• M11: 13,744,753 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 254.7

Radius: 6.9

Gravity: 5.35 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 7.05 AU - 8.59 AU

Year: 14120 Days

Day: 19.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 59,549,869 km

• M1: 85,869 km (0.093 R)
• M2: 334,052 km (0.052 R)
• M3: 592,258 km (0.06 R)
• M4: 864,526 km (0.064 R)
• M5: 1,504,506 km (0.1 R)
• M6: 1,787,545 km (0.079 R)
• M7: 2,815,282 km (0.116 R)
• M8: 3,978,705 km (0.099 R)
• M9: 5,117,294 km (0.083 R)
• M10: 5,896,699 km (0.084 R)
• M11: 6,752,848 km (0.083 R)
• M12: 7,210,767 km (0.088 R)
• M13: 7,770,861 km (0.073 R)
• M14: 8,887,609 km (0.101 R)
• M15: 10,706,720 km (0.075 R)
• M16: 11,382,154 km (0.104 R)
• M17: 16,516,353 km (0.114 R)
• M18: 17,067,023 km (0.035 R)
• M19: 17,915,991 km (0.052 R)
• M20: 18,132,608 km (0.089 R)
• M21: 20,238,946 km (0.088 R)
• M22: 22,587,035 km (0.115 R)
• M23: 23,696,153 km (0.107 R)
• M24: 24,930,784 km (0.105 R)
• M25: 29,389,399 km (0.081 R)
• M26: 30,504,651 km (0.096 R)
• M27: 33,579,636 km (0.065 R)
• M28: 40,710,069 km (0.085 R)
• M29: 42,863,231 km (0.077 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 561.1

Radius: 5.3

Gravity: 19.98 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 6.49 AU - 10.01 AU

Year: 15300 Days

Day: 24.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 59,549,869 km

• M1: 67,020 km (0.105 R)
• M2: 274,811 km (0.111 R)
• M3: 534,663 km (0.09 R)
• M4: 818,300 km (0.093 R)
• M5: 995,275 km (0.12 R)
• M6: 1,770,341 km (0.077 R)
• M7: 2,242,622 km (0.081 R)
• M8: 2,818,125 km (0.089 R)
• M9: 3,355,779 km (0.076 R)
• M10: 6,008,150 km (0.077 R)
• M11: 6,400,694 km (0.083 R)
• M12: 6,852,031 km (0.076 R)
• M13: 7,772,357 km (0.113 R)
• M14: 8,190,932 km (0.115 R)
• M15: 8,381,669 km (0.1 R)
• M16: 9,484,655 km (0.108 R)
• M17: 10,908,826 km (0.086 R)
• M18: 14,658,198 km (0.12 R)
• M19: 15,953,416 km (0.081 R)
• M20: 16,477,158 km (0.111 R)
• M21: 18,852,174 km (0.114 R)
• M22: 22,175,790 km (0.109 R)
• M23: 22,922,134 km (0.08 R)
• M24: 24,464,637 km (0.104 R)
• M25: 25,060,486 km (0.092 R)
• M26: 26,488,397 km (0.109 R)
• M27: 27,540,968 km (0.12 R)
• M28: 27,969,715 km (0.071 R)
• M29: 29,393,887 km (0.116 R)
• M30: 35,071,126 km (0.093 R)
• M31: 35,448,412 km (0.094 R)
• M32: 36,083,156 km (0.069 R)
• M33: 45,187,533 km (0.092 R)
• M34: 48,532,242 km (0.073 R)
• M35: 57,958,254 km (0.102 R)
• M36: 58,309,360 km (0.111 R)
• M37: 59,371,655 km (0.113 R)
• M38: 59,549,826 km (0.106 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 391 - 13,217 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit