🌌 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: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.51 AU - 0.55 AU

Year: 253 Days

Day: 15.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 20.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.51

Radius: 1.45

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.46 AU - 0.72 AU

Year: 297 Days

Day: 39.4 Hours

Environment

Temp: -136 °C

Axial Tilt: 12.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 530.5

Radius: 14.8

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.67 AU - 0.97 AU

Year: 487 Days

Day: 9.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 84,334,134 km

• M1: 184,005 km (0.041 R)
• M2: 658,679 km (0.075 R)
• M3: 1,145,770 km (0.091 R)
• M4: 1,964,370 km (0.086 R)
• M5: 2,740,184 km (0.09 R)
• M6: 3,296,838 km (0.025 R)
• M7: 4,193,228 km (0.095 R)
• M8: 4,922,668 km (0.094 R)
• M9: 5,619,046 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 975.5

Radius: 8.2

Gravity: 14.51 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.1 AU - 1.82 AU

Year: 1157 Days

Day: 5.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 84,334,134 km

• M1: 102,026 km (0.105 R)
• M2: 360,531 km (0.075 R)
• M3: 637,437 km (0.096 R)
• M4: 902,973 km (0.052 R)
• M5: 1,314,516 km (0.077 R)
• M6: 1,690,007 km (0.103 R)
• M7: 2,273,888 km (0.12 R)
• M8: 2,684,833 km (0.065 R)
• M9: 3,218,598 km (0.068 R)
• M10: 3,838,233 km (0.09 R)
• M11: 4,441,112 km (0.086 R)
• M12: 5,723,166 km (0.12 R)
• M13: 6,177,494 km (0.099 R)
• M14: 7,184,139 km (0.101 R)
• M15: 7,471,965 km (0.038 R)
• M16: 8,267,826 km (0.081 R)
• M17: 10,688,020 km (0.089 R)
• M18: 11,132,924 km (0.089 R)
• M19: 12,392,089 km (0.035 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.8

Radius: 13.2

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.01 AU - 3.13 AU

Year: 2703 Days

Day: 13.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 84,334,134 km

• M1: 168,298 km (0.094 R)
• M2: 718,967 km (0.102 R)
• M3: 1,176,288 km (0.106 R)
• M4: 2,301,713 km (0.086 R)
• M5: 3,421,303 km (0.078 R)
• M6: 6,587,093 km (0.094 R)
• M7: 7,351,987 km (0.05 R)
• M8: 11,765,125 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.6

Radius: 12

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 3.53 AU - 4.93 AU

Year: 5707 Days

Day: 12.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 84,334,134 km

• M1: 149,299 km (0.104 R)
• M2: 600,336 km (0.108 R)
• M3: 1,303,297 km (0.051 R)
• M4: 2,687,975 km (0.089 R)
• M5: 3,467,230 km (0.094 R)
• M6: 3,844,815 km (0.116 R)
• M7: 4,536,107 km (0.119 R)
• M8: 4,937,777 km (0.114 R)
• M9: 5,363,084 km (0.115 R)
• M10: 6,017,724 km (0.107 R)
• M11: 6,410,867 km (0.082 R)
• M12: 7,486,775 km (0.043 R)
• M13: 8,342,176 km (0.097 R)
• M14: 9,103,778 km (0.079 R)
• M15: 9,911,308 km (0.094 R)
• M16: 11,121,255 km (0.078 R)
• M17: 12,917,627 km (0.106 R)
• M18: 15,120,156 km (0.12 R)
• M19: 16,839,335 km (0.112 R)
• M20: 17,993,482 km (0.12 R)
• M21: 18,749,101 km (0.037 R)
• M22: 23,068,141 km (0.117 R)
• M23: 24,035,291 km (0.1 R)
• M24: 26,210,295 km (0.118 R)
• M25: 27,841,959 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756

Radius: 13.3

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 4.36 AU - 6.86 AU

Year: 8717 Days

Day: 14.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 84,334,134 km

• M1: 166,203 km (0.105 R)
• M2: 582,534 km (0.11 R)
• M3: 1,143,526 km (0.045 R)
• M4: 2,096,315 km (0.058 R)
• M5: 3,091,141 km (0.106 R)
• M6: 3,598,278 km (0.074 R)
• M7: 4,054,252 km (0.085 R)
• M8: 4,841,137 km (0.101 R)
• M9: 5,335,109 km (0.109 R)
• M10: 6,352,674 km (0.095 R)
• M11: 8,505,686 km (0.096 R)
• M12: 9,367,819 km (0.088 R)
• M13: 10,187,765 km (0.118 R)
• M14: 10,898,654 km (0.092 R)
• M15: 15,024,413 km (0.117 R)
• M16: 19,088,838 km (0.062 R)
• M17: 20,169,982 km (0.03 R)
• M18: 25,637,784 km (0.069 R)
• M19: 26,573,070 km (0.093 R)
• M20: 28,611,042 km (0.067 R)
• M21: 29,923,763 km (0.088 R)
• M22: 32,021,125 km (0.08 R)
• M23: 33,879,579 km (0.109 R)
• M24: 34,665,267 km (0.094 R)
• M25: 38,655,791 km (0.111 R)
• M26: 41,906,852 km (0.062 R)
• M27: 43,598,953 km (0.026 R)

Asteroid Belt

Center: 6.79 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 7.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 392.7

Radius: 5.3

Gravity: 13.98 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 7.01 AU - 8.93 AU

Year: 14760 Days

Day: 17.5 Hours

Environment

Temp: -231 °C

Axial Tilt: 130.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 84,334,134 km

• M1: 68,366 km (0.117 R)
• M2: 346,917 km (0.077 R)
• M3: 645,365 km (0.098 R)
• M4: 852,259 km (0.116 R)
• M5: 1,430,156 km (0.084 R)
• M6: 1,835,715 km (0.042 R)
• M7: 2,021,516 km (0.106 R)
• M8: 3,195,261 km (0.06 R)
• M9: 3,516,148 km (0.106 R)
• M10: 4,107,958 km (0.086 R)
• M11: 5,767,447 km (0.043 R)
• M12: 6,318,864 km (0.099 R)
• M13: 14,887,681 km (0.066 R)
• M14: 17,673,492 km (0.115 R)
• M15: 24,249,964 km (0.095 R)
• M16: 27,261,669 km (0.109 R)
• M17: 27,872,028 km (0.098 R)
• M18: 31,838,765 km (0.052 R)
• M19: 33,086,711 km (0.066 R)
• M20: 36,778,936 km (0.073 R)
• M21: 49,185,237 km (0.11 R)
• M22: 50,697,970 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 742.5

Radius: 4.1

Gravity: 44.17 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 10.2 AU - 10.86 AU

Year: 22416 Days

Day: 17.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 84,334,134 km

• M1: 52,658 km (0.119 R)
• M2: 487,390 km (0.072 R)
• M3: 629,059 km (0.092 R)
• M4: 777,161 km (0.036 R)
• M5: 1,036,863 km (0.107 R)
• M6: 3,950,581 km (0.067 R)
• M7: 4,460,111 km (0.075 R)
• M8: 7,328,949 km (0.071 R)
• M9: 10,713,302 km (0.108 R)
• M10: 13,175,683 km (0.067 R)
• M11: 14,615,862 km (0.109 R)
• M12: 16,924,606 km (0.054 R)
• M13: 17,537,658 km (0.107 R)
• M14: 18,438,835 km (0.082 R)
• M15: 19,275,835 km (0.075 R)
• M16: 41,448,334 km (0.052 R)
• M17: 44,842,560 km (0.096 R)
• M18: 51,811,427 km (0.053 R)
• M19: 51,994,236 km (0.094 R)
• M20: 71,630,752 km (0.114 R)
• M21: 75,790,470 km (0.086 R)
• M22: 78,169,675 km (0.113 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 472 - 12,707 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit