🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.47 AU - 0.61 AU

Year: 260 Days

Day: 40.3 Hours

Environment

Temp: -112 °C

Axial Tilt: 4.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852

Radius: 14.2

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.63 AU - 0.97 AU

Year: 469 Days

Day: 14.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 64,221,544 km

• M1: 176,525 km (0.111 R)
• M2: 643,420 km (0.099 R)
• M3: 1,205,011 km (0.042 R)
• M4: 1,809,685 km (0.066 R)
• M5: 2,965,179 km (0.086 R)
• M6: 3,634,630 km (0.115 R)
• M7: 4,507,085 km (0.117 R)
• M8: 5,379,390 km (0.114 R)
• M9: 6,045,699 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 252.2

Radius: 9

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.8 AU - 1.16 AU

Year: 636 Days

Day: 8.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 64,221,544 km

• M1: 114,143 km (0.033 R)
• M2: 627,264 km (0.03 R)
• M3: 1,415,345 km (0.092 R)
• M4: 1,761,665 km (0.057 R)
• M5: 2,164,681 km (0.097 R)
• M6: 2,910,277 km (0.105 R)
• M7: 3,792,605 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.9

Radius: 13

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.15 AU - 1.23 AU

Year: 852 Days

Day: 5.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,221,544 km

• M1: 161,865 km (0.114 R)
• M2: 573,708 km (0.059 R)
• M3: 1,069,326 km (0.111 R)
• M4: 1,474,736 km (0.109 R)
• M5: 1,892,862 km (0.099 R)
• M6: 2,380,701 km (0.082 R)
• M7: 3,158,460 km (0.054 R)
• M8: 3,702,547 km (0.08 R)
• M9: 4,211,180 km (0.041 R)
• M10: 4,644,715 km (0.104 R)
• M11: 5,761,014 km (0.041 R)
• M12: 6,889,132 km (0.12 R)
• M13: 7,687,236 km (0.055 R)
• M14: 8,890,901 km (0.083 R)
• M15: 9,300,350 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.7

Radius: 12.5

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.03 AU - 2.15 AU

Year: 1982 Days

Day: 13.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 64,221,544 km

• M1: 157,227 km (0.115 R)
• M2: 643,121 km (0.107 R)
• M3: 2,081,505 km (0.068 R)
• M4: 2,954,259 km (0.106 R)
• M5: 3,691,776 km (0.086 R)
• M6: 4,095,092 km (0.076 R)
• M7: 7,924,648 km (0.092 R)
• M8: 8,412,636 km (0.098 R)
• M9: 8,952,984 km (0.117 R)
• M10: 9,550,478 km (0.077 R)
• M11: 11,426,734 km (0.119 R)
• M12: 14,549,739 km (0.116 R)
• M13: 15,470,215 km (0.093 R)
• M14: 16,380,219 km (0.052 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 915.1

Radius: 12.4

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.75 AU - 3.91 AU

Year: 4917 Days

Day: 7.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 64,221,544 km

• M1: 154,235 km (0.032 R)
• M2: 742,903 km (0.113 R)
• M3: 1,545,645 km (0.115 R)
• M4: 2,125,935 km (0.077 R)
• M5: 3,911,685 km (0.081 R)
• M6: 5,223,060 km (0.108 R)
• M7: 6,216,240 km (0.092 R)
• M8: 6,774,988 km (0.094 R)
• M9: 7,768,318 km (0.053 R)
• M10: 8,654,835 km (0.069 R)
• M11: 9,102,133 km (0.115 R)
• M12: 9,999,122 km (0.098 R)
• M13: 11,285,813 km (0.095 R)
• M14: 14,981,928 km (0.114 R)
• M15: 15,807,708 km (0.111 R)
• M16: 16,725,790 km (0.094 R)
• M17: 18,070,525 km (0.063 R)
• M18: 19,555,434 km (0.12 R)
• M19: 20,613,390 km (0.102 R)
• M20: 21,932,993 km (0.074 R)
• M21: 24,821,129 km (0.07 R)
• M22: 27,342,003 km (0.108 R)
• M23: 27,865,895 km (0.096 R)
• M24: 30,400,083 km (0.069 R)
• M25: 30,962,570 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 537.6

Radius: 7.6

Gravity: 9.31 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 6.71 AU - 11.15 AU

Year: 17506 Days

Day: 24.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 64,221,544 km

• M1: 94,546 km (0.051 R)
• M2: 342,729 km (0.046 R)
• M3: 714,180 km (0.095 R)
• M4: 992,133 km (0.116 R)
• M5: 2,118,007 km (0.042 R)
• M6: 2,548,849 km (0.112 R)
• M7: 2,939,299 km (0.099 R)
• M8: 4,046,622 km (0.072 R)
• M9: 4,845,625 km (0.06 R)
• M10: 5,300,552 km (0.079 R)
• M11: 7,142,251 km (0.062 R)
• M12: 7,455,808 km (0.095 R)
• M13: 8,206,939 km (0.054 R)
• M14: 8,651,095 km (0.118 R)
• M15: 9,059,348 km (0.087 R)
• M16: 10,080,503 km (0.063 R)
• M17: 14,721,777 km (0.079 R)
• M18: 15,451,814 km (0.112 R)
• M19: 16,282,531 km (0.058 R)
• M20: 19,295,283 km (0.107 R)
• M21: 22,279,162 km (0.069 R)
• M22: 22,852,870 km (0.112 R)
• M23: 23,240,777 km (0.098 R)
• M24: 23,830,941 km (0.042 R)
• M25: 25,143,662 km (0.118 R)
• M26: 26,503,956 km (0.116 R)
• M27: 26,824,693 km (0.084 R)
• M28: 29,599,285 km (0.108 R)
• M29: 30,176,284 km (0.11 R)
• M30: 35,711,405 km (0.092 R)
• M31: 37,428,190 km (0.075 R)
• M32: 41,311,302 km (0.07 R)
• M33: 44,093,972 km (0.087 R)
• M34: 51,178,030 km (0.063 R)
• M35: 57,542,223 km (0.077 R)
• M36: 58,260,292 km (0.098 R)
• M37: 63,646,115 km (0.086 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 170 - 12,332 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit