🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.23

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.5 AU - 0.78 AU

Year: 336 Days

Day: 31.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.53 AU - 0.81 AU

Year: 360 Days

Day: 19.2 Hours

Environment

Temp: -144 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,985,118 km

• M1: 268,528 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 502.9

Radius: 9.6

Gravity: 5.46 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.54 AU - 0.84 AU

Year: 376 Days

Day: 13.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 73,985,118 km

• M1: 119,379 km (0.104 R)
• M2: 501,003 km (0.066 R)
• M3: 1,116,449 km (0.101 R)
• M4: 2,625,742 km (0.099 R)
• M5: 3,225,779 km (0.091 R)
• M6: 3,793,503 km (0.118 R)
• M7: 4,588,316 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112

Radius: 10.4

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.92 AU - 1.28 AU

Year: 757 Days

Day: 12.4 Hours

Environment

Temp: -166 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,985,118 km

• M1: 129,402 km (0.109 R)
• M2: 455,226 km (0.096 R)
• M3: 879,785 km (0.078 R)
• M4: 1,308,084 km (0.053 R)
• M5: 1,747,752 km (0.051 R)
• M6: 2,616,317 km (0.054 R)
• M7: 3,101,313 km (0.117 R)
• M8: 3,880,868 km (0.062 R)
• M9: 4,227,337 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894

Radius: 14

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.31 AU - 1.55 AU

Year: 1122 Days

Day: 13.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 73,985,118 km

• M1: 174,282 km (0.103 R)
• M2: 725,101 km (0.101 R)
• M3: 1,630,766 km (0.12 R)
• M4: 2,194,152 km (0.097 R)
• M5: 2,768,309 km (0.087 R)
• M6: 3,642,708 km (0.048 R)
• M7: 4,188,441 km (0.054 R)
• M8: 4,694,232 km (0.075 R)
• M9: 5,529,885 km (0.102 R)
• M10: 6,533,089 km (0.077 R)
• M11: 7,166,037 km (0.072 R)
• M12: 8,164,753 km (0.047 R)
• M13: 8,755,365 km (0.067 R)
• M14: 9,495,575 km (0.112 R)
• M15: 10,149,318 km (0.044 R)
• M16: 11,305,560 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.6

Radius: 13.3

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 4.33 AU - 5.93 AU

Year: 7622 Days

Day: 10.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 73,985,118 km

• M1: 165,455 km (0.118 R)
• M2: 644,468 km (0.07 R)
• M3: 1,120,338 km (0.067 R)
• M4: 1,535,772 km (0.109 R)
• M5: 3,124,651 km (0.119 R)
• M6: 3,553,847 km (0.078 R)
• M7: 4,221,802 km (0.102 R)
• M8: 5,000,758 km (0.089 R)
• M9: 5,470,196 km (0.099 R)
• M10: 7,351,239 km (0.104 R)
• M11: 8,358,033 km (0.047 R)
• M12: 10,981,980 km (0.109 R)
• M13: 11,984,435 km (0.054 R)
• M14: 12,992,425 km (0.064 R)
• M15: 16,166,593 km (0.036 R)
• M16: 16,612,844 km (0.041 R)
• M17: 17,397,036 km (0.078 R)
• M18: 18,828,388 km (0.093 R)
• M19: 23,431,365 km (0.116 R)
• M20: 25,862,480 km (0.054 R)
• M21: 28,364,803 km (0.063 R)
• M22: 30,926,966 km (0.064 R)
• M23: 34,054,609 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 333.4

Radius: 3.1

Gravity: 34.69 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 5.88 AU - 7.14 AU

Year: 10896 Days

Day: 15.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 73,985,118 km

• M1: 41,738 km (0.078 R)
• M2: 195,824 km (0.113 R)
• M3: 329,714 km (0.105 R)
• M4: 463,305 km (0.093 R)
• M5: 971,638 km (0.094 R)
• M6: 1,159,084 km (0.076 R)
• M7: 1,433,148 km (0.099 R)
• M8: 1,808,040 km (0.118 R)
• M9: 1,915,002 km (0.088 R)
• M10: 3,845,413 km (0.076 R)
• M11: 4,532,965 km (0.112 R)
• M12: 6,820,466 km (0.075 R)
• M13: 7,232,608 km (0.054 R)
• M14: 10,741,576 km (0.108 R)
• M15: 10,941,887 km (0.092 R)
• M16: 11,144,742 km (0.097 R)
• M17: 11,401,901 km (0.037 R)
• M18: 11,821,373 km (0.078 R)
• M19: 13,370,908 km (0.091 R)
• M20: 14,926,128 km (0.11 R)
• M21: 15,050,593 km (0.082 R)
• M22: 16,865,664 km (0.111 R)
• M23: 19,259,529 km (0.085 R)
• M24: 20,231,616 km (0.068 R)
• M25: 20,383,907 km (0.035 R)
• M26: 20,537,095 km (0.073 R)
• M27: 21,710,391 km (0.111 R)
• M28: 22,030,680 km (0.106 R)
• M29: 35,659,495 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 693.6

Radius: 6.2

Gravity: 18.04 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 8.75 AU - 10.15 AU

Year: 19057 Days

Day: 20.5 Hours

Environment

Temp: -236 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 73,985,118 km

• M1: 77,791 km (0.097 R)
• M2: 427,551 km (0.051 R)
• M3: 704,606 km (0.065 R)
• M4: 941,569 km (0.094 R)
• M5: 2,387,133 km (0.076 R)
• M6: 3,191,970 km (0.08 R)
• M7: 4,229,431 km (0.071 R)
• M8: 4,771,873 km (0.119 R)
• M9: 5,831,175 km (0.053 R)
• M10: 6,035,676 km (0.058 R)
• M11: 8,986,942 km (0.051 R)
• M12: 9,823,494 km (0.058 R)
• M13: 10,290,389 km (0.049 R)
• M14: 11,268,160 km (0.078 R)
• M15: 13,549,378 km (0.094 R)
• M16: 14,127,724 km (0.092 R)
• M17: 15,724,083 km (0.119 R)
• M18: 16,201,449 km (0.082 R)
• M19: 16,606,560 km (0.079 R)
• M20: 19,270,599 km (0.118 R)
• M21: 20,562,078 km (0.09 R)
• M22: 21,811,968 km (0.101 R)
• M23: 23,625,094 km (0.089 R)
• M24: 24,995,411 km (0.111 R)
• M25: 30,026,387 km (0.116 R)
• M26: 36,240,533 km (0.112 R)
• M27: 38,060,092 km (0.109 R)
• M28: 41,276,446 km (0.094 R)
• M29: 42,950,745 km (0.114 R)
• M30: 51,480,666 km (0.074 R)
• M31: 54,315,995 km (0.047 R)
• M32: 68,158,735 km (0.046 R)
• M33: 69,213,699 km (0.117 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 190 - 15,624 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit