🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.41 AU - 0.61 AU

Year: 232 Days

Day: 40.8 Hours

Environment

Temp: -108 °C

Axial Tilt: 0.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 533.3

Radius: 9

Gravity: 6.58 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.7 AU - 0.98 AU

Year: 489 Days

Day: 14.3 Hours

Environment

Temp: -155 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,467,527 km

• M1: 111,899 km (0.031 R)
• M2: 400,473 km (0.047 R)
• M3: 705,354 km (0.088 R)
• M4: 988,393 km (0.115 R)
• M5: 1,282,802 km (0.049 R)
• M6: 1,650,813 km (0.074 R)
• M7: 1,988,904 km (0.071 R)
• M8: 2,623,049 km (0.119 R)
• M9: 3,098,022 km (0.078 R)
• M10: 3,409,784 km (0.096 R)
• M11: 4,110,800 km (0.114 R)
• M12: 4,502,896 km (0.07 R)
• M13: 4,843,530 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.2

Radius: 14.1

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.17 AU - 1.43 AU

Year: 942 Days

Day: 14.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,467,527 km

• M1: 175,478 km (0.052 R)
• M2: 1,154,297 km (0.081 R)
• M3: 1,675,795 km (0.109 R)
• M4: 2,825,156 km (0.104 R)
• M5: 3,654,826 km (0.098 R)
• M6: 5,660,035 km (0.039 R)
• M7: 6,158,346 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.2

Radius: 14.4

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.41 AU - 1.91 AU

Year: 1360 Days

Day: 12.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,467,527 km

• M1: 179,069 km (0.098 R)
• M2: 764,894 km (0.095 R)
• M3: 1,232,836 km (0.034 R)
• M4: 1,720,076 km (0.096 R)
• M5: 2,208,065 km (0.054 R)
• M6: 2,775,788 km (0.092 R)
• M7: 3,346,056 km (0.106 R)
• M8: 5,092,312 km (0.051 R)
• M9: 6,334,123 km (0.09 R)
• M10: 6,935,956 km (0.106 R)
• M11: 7,385,048 km (0.116 R)
• M12: 7,995,258 km (0.118 R)
• M13: 10,469,009 km (0.105 R)
• M14: 11,421,049 km (0.109 R)
• M15: 13,335,603 km (0.102 R)
• M16: 13,991,290 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.9

Radius: 11.8

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 1.51 AU - 2.29 AU

Year: 1665 Days

Day: 13.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,467,527 km

• M1: 146,756 km (0.054 R)
• M2: 579,243 km (0.116 R)
• M3: 951,442 km (0.067 R)
• M4: 1,709,156 km (0.112 R)
• M5: 2,103,047 km (0.099 R)
• M6: 2,509,803 km (0.072 R)
• M7: 3,291,901 km (0.058 R)
• M8: 4,441,262 km (0.068 R)
• M9: 5,039,653 km (0.083 R)
• M10: 6,216,091 km (0.056 R)
• M11: 7,828,157 km (0.12 R)
• M12: 9,223,457 km (0.104 R)
• M13: 11,042,118 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 965.6

Radius: 10.8

Gravity: 8.28 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.66 AU - 2.28 AU

Year: 1758 Days

Day: 9.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 62,467,527 km

• M1: 134,488 km (0.115 R)
• M2: 647,460 km (0.09 R)
• M3: 1,052,421 km (0.064 R)
• M4: 1,530,685 km (0.12 R)
• M5: 1,938,938 km (0.031 R)
• M6: 3,249,266 km (0.06 R)
• M7: 3,623,410 km (0.079 R)
• M8: 4,561,837 km (0.072 R)
• M9: 5,189,251 km (0.056 R)
• M10: 6,072,477 km (0.075 R)
• M11: 6,887,187 km (0.096 R)
• M12: 8,290,265 km (0.088 R)
• M13: 8,830,314 km (0.065 R)
• M14: 10,888,631 km (0.114 R)
• M15: 11,969,774 km (0.119 R)
• M16: 13,291,322 km (0.093 R)
• M17: 14,031,831 km (0.071 R)
• M18: 15,358,166 km (0.081 R)
• M19: 15,882,507 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.5

Radius: 15

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 3.81 AU - 4.97 AU

Year: 5848 Days

Day: 14.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 63.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,467,527 km

• M1: 186,549 km (0.1 R)
• M2: 705,055 km (0.078 R)
• M3: 1,249,142 km (0.113 R)
• M4: 1,954,945 km (0.109 R)
• M5: 2,903,246 km (0.117 R)
• M6: 3,483,536 km (0.045 R)
• M7: 4,356,440 km (0.063 R)
• M8: 5,396,594 km (0.098 R)
• M9: 5,975,986 km (0.034 R)
• M10: 9,007,737 km (0.077 R)
• M11: 10,532,139 km (0.113 R)
• M12: 13,990,542 km (0.052 R)
• M13: 19,028,700 km (0.06 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 750.5

Radius: 5.9

Gravity: 21.56 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 6.75 AU - 10.33 AU

Year: 15868 Days

Day: 21.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 62,467,527 km

• M1: 78,688 km (0.095 R)
• M2: 380,577 km (0.086 R)
• M3: 722,259 km (0.11 R)
• M4: 1,173,745 km (0.095 R)
• M5: 3,258,990 km (0.093 R)
• M6: 3,729,176 km (0.086 R)
• M7: 3,965,540 km (0.038 R)
• M8: 4,371,100 km (0.116 R)
• M9: 4,803,887 km (0.101 R)
• M10: 5,562,797 km (0.09 R)
• M11: 6,398,899 km (0.04 R)
• M12: 8,168,792 km (0.077 R)
• M13: 10,298,766 km (0.104 R)
• M14: 11,429,577 km (0.093 R)
• M15: 13,865,030 km (0.062 R)
• M16: 17,842,388 km (0.104 R)
• M17: 18,514,980 km (0.117 R)
• M18: 18,943,878 km (0.061 R)
• M19: 19,555,434 km (0.063 R)
• M20: 20,179,855 km (0.103 R)
• M21: 26,196,682 km (0.029 R)
• M22: 40,159,698 km (0.054 R)
• M23: 47,095,055 km (0.108 R)
• M24: 50,012,812 km (0.097 R)
• M25: 54,787,527 km (0.05 R)
• M26: 56,563,852 km (0.101 R)
• M27: 63,470,038 km (0.048 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 246.6

Radius: 7.7

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 10.4 AU - 12.6 AU

Year: 24796 Days

Day: 22.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 62,467,527 km

• M1: 98,136 km (0.09 R)
• M2: 459,565 km (0.1 R)
• M3: 1,179,430 km (0.073 R)
• M4: 1,509,443 km (0.052 R)
• M5: 2,101,401 km (0.11 R)
• M6: 3,054,489 km (0.115 R)
• M7: 3,464,537 km (0.088 R)
• M8: 4,985,947 km (0.113 R)
• M9: 6,571,386 km (0.045 R)
• M10: 6,822,560 km (0.1 R)
• M11: 8,128,400 km (0.105 R)
• M12: 9,329,073 km (0.096 R)
• M13: 13,367,019 km (0.03 R)
• M14: 17,784,045 km (0.06 R)
• M15: 19,277,930 km (0.097 R)
• M16: 21,124,566 km (0.083 R)
• M17: 22,137,493 km (0.057 R)
• M18: 28,019,382 km (0.114 R)
• M19: 28,792,953 km (0.118 R)
• M20: 30,847,530 km (0.104 R)
• M21: 32,150,078 km (0.119 R)
• M22: 32,390,781 km (0.106 R)
• M23: 34,864,382 km (0.098 R)
• M24: 35,118,549 km (0.105 R)
• M25: 43,036,615 km (0.104 R)
• M26: 45,413,426 km (0.091 R)
• M27: 55,797,313 km (0.039 R)
• M28: 61,536,635 km (0.106 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 527 - 18,208 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit