🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.38

Radius: 1.14

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.44 AU - 0.7 AU

Year: 163 Days

Day: 34.2 Hours

Environment

Temp: 159 °C

Axial Tilt: 43.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 80,593,053 km

• M1: 65,973 km (0.07 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.83 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.74 AU - 0.92 AU

Year: 286 Days

Day: 40.1 Hours

Environment

Temp: 88 °C

Axial Tilt: 49.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.92 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.17

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.86 AU - 0.98 AU

Year: 334 Days

Day: 46 Hours

Environment

Temp: 21 °C

Axial Tilt: 11.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 80,593,053 km

• M1: 34,707 km (0.076 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 3.68 AU - 3.76 AU

Year: 2717 Days

Day: 36 Hours

Environment

Temp: -135 °C

Axial Tilt: 0.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 80,593,053 km

• M1: 1,274,574 km (0.084 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.42

Radius: 1.64

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 3.42 AU - 4.38 AU

Year: 2917 Days

Day: 20.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 4.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.4

Radius: 14.2

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 3.9 AU - 4.58 AU

Year: 3307 Days

Day: 10 Hours

Environment

Temp: -146 °C

Axial Tilt: 179.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 80,593,053 km

• M1: 176,525 km (0.118 R)
• M2: 740,809 km (0.119 R)
• M3: 1,313,619 km (0.035 R)
• M4: 1,969,306 km (0.101 R)
• M5: 2,956,952 km (0.094 R)
• M6: 4,014,160 km (0.082 R)
• M7: 4,456,521 km (0.051 R)
• M8: 5,080,643 km (0.107 R)
• M9: 6,565,252 km (0.083 R)
• M10: 7,638,467 km (0.106 R)
• M11: 8,182,555 km (0.117 R)
• M12: 9,540,754 km (0.041 R)
• M13: 10,294,278 km (0.044 R)
• M14: 13,080,239 km (0.043 R)
• M15: 14,313,823 km (0.06 R)
• M16: 15,462,436 km (0.059 R)
• M17: 16,615,237 km (0.107 R)
• M18: 17,126,563 km (0.113 R)
• M19: 20,939,663 km (0.089 R)
• M20: 22,626,080 km (0.089 R)
• M21: 23,254,690 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.1

Radius: 10

Gravity: 8.01 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.52 AU - 4.98 AU

Year: 3318 Days

Day: 12.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 80,593,053 km

• M1: 124,316 km (0.036 R)
• M2: 465,698 km (0.072 R)
• M3: 1,257,370 km (0.092 R)
• M4: 2,025,705 km (0.055 R)
• M5: 2,348,238 km (0.106 R)
• M6: 2,957,550 km (0.095 R)
• M7: 4,353,448 km (0.079 R)
• M8: 5,070,171 km (0.104 R)
• M9: 8,173,728 km (0.062 R)
• M10: 8,743,397 km (0.107 R)
• M11: 9,150,303 km (0.069 R)
• M12: 9,962,021 km (0.058 R)
• M13: 11,161,198 km (0.11 R)
• M14: 13,450,793 km (0.081 R)
• M15: 15,070,489 km (0.087 R)
• M16: 15,548,604 km (0.12 R)
• M17: 16,760,048 km (0.096 R)
• M18: 18,937,594 km (0.106 R)
• M19: 19,871,833 km (0.075 R)
• M20: 20,576,290 km (0.109 R)
• M21: 21,764,695 km (0.116 R)

Asteroid Belt

Center: 5.51 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 68.7

Radius: 14.1

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 5.53 AU - 7.99 AU

Year: 6657 Days

Day: 9.8 Hours

Environment

Temp: -159 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 80,593,053 km

• M1: 175,329 km (0.068 R)
• M2: 812,765 km (0.113 R)
• M3: 2,033,633 km (0.106 R)
• M4: 2,910,427 km (0.097 R)
• M5: 4,705,302 km (0.079 R)
• M6: 7,151,377 km (0.025 R)
• M7: 8,618,333 km (0.088 R)
• M8: 11,012,946 km (0.119 R)
• M9: 11,509,611 km (0.049 R)
• M10: 13,647,664 km (0.067 R)
• M11: 14,310,832 km (0.097 R)
• M12: 14,995,391 km (0.107 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 585.4

Radius: 3.8

Gravity: 40.54 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 11.77 AU - 14.83 AU

Year: 18371 Days

Day: 24.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 80,593,053 km

• M1: 47,572 km (0.027 R)
• M2: 193,580 km (0.078 R)
• M3: 337,194 km (0.078 R)
• M4: 844,779 km (0.077 R)
• M5: 1,099,844 km (0.115 R)
• M6: 3,097,723 km (0.102 R)
• M7: 6,727,267 km (0.051 R)
• M8: 8,367,159 km (0.111 R)
• M9: 8,621,325 km (0.091 R)
• M10: 9,689,604 km (0.055 R)
• M11: 11,267,712 km (0.078 R)
• M12: 11,453,063 km (0.107 R)
• M13: 12,410,191 km (0.117 R)
• M14: 19,649,381 km (0.08 R)
• M15: 19,828,151 km (0.114 R)
• M16: 20,738,154 km (0.094 R)
• M17: 22,154,846 km (0.114 R)
• M18: 23,233,896 km (0.06 R)
• M19: 23,433,758 km (0.088 R)
• M20: 26,353,909 km (0.117 R)
• M21: 29,158,121 km (0.1 R)
• M22: 29,741,852 km (0.108 R)
• M23: 37,778,399 km (0.103 R)
• M24: 38,332,659 km (0.047 R)
• M25: 42,662,919 km (0.115 R)
• M26: 43,870,324 km (0.059 R)
• M27: 44,945,483 km (0.115 R)
• M28: 47,468,452 km (0.063 R)
• M29: 48,113,518 km (0.053 R)
• M30: 54,185,396 km (0.092 R)
• M31: 58,504,885 km (0.097 R)
• M32: 59,060,491 km (0.092 R)
• M33: 62,467,882 km (0.054 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 322.7

Radius: 4.3

Gravity: 17.45 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 17.15 AU - 21.17 AU

Year: 31764 Days

Day: 21.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 80,593,053 km

• M1: 53,406 km (0.104 R)
• M2: 214,523 km (0.118 R)
• M3: 650,601 km (0.105 R)
• M4: 1,033,422 km (0.052 R)
• M5: 1,518,568 km (0.063 R)
• M6: 2,406,731 km (0.106 R)
• M7: 3,054,340 km (0.1 R)
• M8: 4,438,120 km (0.108 R)
• M9: 5,169,504 km (0.115 R)
• M10: 7,590,147 km (0.096 R)
• M11: 10,303,254 km (0.114 R)
• M12: 11,443,489 km (0.094 R)
• M13: 13,307,628 km (0.111 R)
• M14: 18,970,955 km (0.096 R)
• M15: 25,601,731 km (0.102 R)
• M16: 29,001,492 km (0.103 R)
• M17: 34,303,689 km (0.116 R)
• M18: 34,577,603 km (0.074 R)
• M19: 39,612,020 km (0.098 R)
• M20: 53,272,101 km (0.107 R)
• M21: 67,162,114 km (0.099 R)
• M22: 69,762,274 km (0.105 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 374 - 17,609 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit