🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.82

Radius: 1.88

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.47 AU - 0.71 AU

Year: 297 Days

Day: 13.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.72

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.51 AU - 0.73 AU

Year: 320 Days

Day: 43.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 29 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.49 AU - 0.75 AU

Year: 320 Days

Day: 19.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,685,460 km

• M1: 23,786 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.3

Radius: 10

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.66 AU - 0.7 AU

Year: 368 Days

Day: 13.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 65.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,685,460 km

• M1: 124,615 km (0.111 R)
• M2: 445,054 km (0.082 R)
• M3: 888,462 km (0.11 R)
• M4: 1,255,126 km (0.071 R)
• M5: 1,597,705 km (0.112 R)
• M6: 1,948,961 km (0.119 R)
• M7: 2,970,116 km (0.105 R)
• M8: 3,288,760 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 861.6

Radius: 9.1

Gravity: 10.4 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.65 AU - 1.07 AU

Year: 523 Days

Day: 10.3 Hours

Environment

Temp: -155 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,685,460 km

• M1: 113,246 km (0.104 R)
• M2: 400,623 km (0.112 R)
• M3: 691,591 km (0.101 R)
• M4: 1,241,363 km (0.094 R)
• M5: 1,844,243 km (0.071 R)
• M6: 2,275,234 km (0.087 R)
• M7: 2,794,638 km (0.074 R)
• M8: 3,572,846 km (0.119 R)
• M9: 3,941,754 km (0.106 R)
• M10: 4,305,876 km (0.062 R)
• M11: 5,862,441 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.3

Radius: 14.9

Gravity: 2.6 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.89 AU - 1.93 AU

Year: 1732 Days

Day: 14.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 43,685,460 km

• M1: 185,501 km (0.093 R)
• M2: 1,889,421 km (0.027 R)
• M3: 2,444,728 km (0.058 R)
• M4: 3,036,089 km (0.106 R)
• M5: 3,525,573 km (0.077 R)
• M6: 4,050,362 km (0.102 R)
• M7: 4,745,244 km (0.108 R)
• M8: 5,366,375 km (0.05 R)
• M9: 6,017,874 km (0.112 R)
• M10: 7,727,328 km (0.08 R)
• M11: 8,679,818 km (0.029 R)
• M12: 10,576,719 km (0.075 R)
• M13: 11,458,898 km (0.108 R)
• M14: 13,450,943 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.1

Radius: 13.8

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 3.75 AU - 5.89 AU

Year: 6942 Days

Day: 12.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 43,685,460 km

• M1: 171,589 km (0.046 R)
• M2: 623,225 km (0.039 R)
• M3: 1,393,355 km (0.118 R)
• M4: 2,058,317 km (0.096 R)
• M5: 3,080,370 km (0.104 R)
• M6: 5,399,735 km (0.102 R)
• M7: 5,897,896 km (0.071 R)
• M8: 6,523,215 km (0.118 R)
• M9: 7,261,780 km (0.078 R)
• M10: 8,281,888 km (0.028 R)
• M11: 9,395,494 km (0.12 R)
• M12: 11,391,130 km (0.098 R)
• M13: 11,919,210 km (0.117 R)
• M14: 12,767,580 km (0.116 R)
• M15: 14,584,745 km (0.064 R)
• M16: 16,813,454 km (0.074 R)
• M17: 17,562,341 km (0.032 R)
• M18: 18,660,988 km (0.112 R)
• M19: 19,942,593 km (0.114 R)
• M20: 24,852,844 km (0.067 R)
• M21: 26,738,076 km (0.101 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 517.6

Radius: 11.5

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 4.84 AU - 6.1 AU

Year: 8392 Days

Day: 9 Hours

Environment

Temp: -215 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 43,685,460 km

• M1: 144,212 km (0.102 R)
• M2: 671,395 km (0.094 R)
• M3: 1,375,852 km (0.103 R)
• M4: 1,788,143 km (0.102 R)
• M5: 3,439,704 km (0.09 R)
• M6: 3,812,651 km (0.077 R)
• M7: 4,369,754 km (0.104 R)
• M8: 4,752,126 km (0.065 R)
• M9: 6,976,048 km (0.079 R)
• M10: 7,772,507 km (0.064 R)
• M11: 11,678,956 km (0.071 R)
• M12: 13,247,639 km (0.093 R)
• M13: 16,145,799 km (0.085 R)
• M14: 19,958,151 km (0.077 R)
• M15: 22,112,360 km (0.086 R)
• M16: 28,734,161 km (0.11 R)
• M17: 30,181,221 km (0.11 R)
• M18: 33,220,002 km (0.087 R)
• M19: 38,497,067 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 505.6

Radius: 3.6

Gravity: 39.01 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 5.88 AU - 6.52 AU

Year: 10127 Days

Day: 17.7 Hours

Environment

Temp: -211 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 43,685,460 km

• M1: 104,419 km (0.087 R)
• M2: 431,889 km (0.081 R)
• M3: 1,344,885 km (0.072 R)
• M4: 2,879,909 km (0.11 R)
• M5: 3,762,237 km (0.065 R)
• M6: 4,155,530 km (0.078 R)
• M7: 4,931,643 km (0.071 R)
• M8: 5,665,122 km (0.107 R)
• M9: 5,799,760 km (0.11 R)
• M10: 6,005,756 km (0.118 R)
• M11: 9,237,519 km (0.098 R)
• M12: 11,919,360 km (0.1 R)
• M13: 14,010,439 km (0.103 R)
• M14: 16,882,569 km (0.084 R)
• M15: 17,091,557 km (0.113 R)
• M16: 17,372,950 km (0.088 R)
• M17: 18,976,041 km (0.037 R)
• M18: 19,429,771 km (0.111 R)
• M19: 22,055,364 km (0.071 R)
• M20: 24,638,919 km (0.086 R)
• M21: 30,913,951 km (0.036 R)
• M22: 43,034,071 km (0.066 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: 333 - 18,652 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit