🌌 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: 0.95

Radius: 0.98

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.58 AU - 0.6 AU

Year: 293 Days

Day: 24.1 Hours

Environment

Temp: -120 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 82,748,496 km

• M1: 41,439 km (0.059 R)
• M2: 442,361 km (0.099 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130.3

Radius: 9

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.64 AU - 0.98 AU

Year: 471 Days

Day: 8.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 82,748,496 km

• M1: 112,049 km (0.055 R)
• M2: 435,629 km (0.117 R)
• M3: 753,375 km (0.072 R)
• M4: 1,063,641 km (0.103 R)
• M5: 1,449,753 km (0.081 R)
• M6: 1,738,926 km (0.114 R)
• M7: 2,460,436 km (0.064 R)
• M8: 2,796,732 km (0.084 R)
• M9: 3,144,547 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.2

Radius: 13.5

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.94 AU - 1.34 AU

Year: 786 Days

Day: 12.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 82,748,496 km

• M1: 167,998 km (0.114 R)
• M2: 1,026,690 km (0.076 R)
• M3: 1,547,590 km (0.117 R)
• M4: 2,532,842 km (0.114 R)
• M5: 3,403,202 km (0.055 R)
• M6: 4,496,314 km (0.113 R)
• M7: 4,960,366 km (0.101 R)
• M8: 5,679,034 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.9

Radius: 10.8

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.87 AU - 6.31 AU

Year: 8534 Days

Day: 11.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 82,748,496 km

• M1: 136,583 km (0.116 R)
• M2: 718,369 km (0.09 R)
• M3: 1,080,246 km (0.084 R)
• M4: 1,617,452 km (0.105 R)
• M5: 2,327,144 km (0.099 R)
• M6: 5,792,130 km (0.108 R)
• M7: 7,627,696 km (0.092 R)
• M8: 11,949,130 km (0.119 R)
• M9: 18,679,389 km (0.09 R)
• M10: 19,719,842 km (0.06 R)
• M11: 29,475,268 km (0.087 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 685.7

Radius: 5.4

Gravity: 23.52 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 7.73 AU - 11.13 AU

Year: 18697 Days

Day: 19.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 82,748,496 km

• M1: 67,169 km (0.09 R)
• M2: 254,167 km (0.082 R)
• M3: 424,409 km (0.05 R)
• M4: 810,072 km (0.115 R)
• M5: 1,022,801 km (0.077 R)
• M6: 1,579,155 km (0.065 R)
• M7: 1,785,899 km (0.052 R)
• M8: 2,494,544 km (0.092 R)
• M9: 2,727,768 km (0.083 R)
• M10: 3,487,725 km (0.078 R)
• M11: 5,188,952 km (0.112 R)
• M12: 6,010,543 km (0.098 R)
• M13: 7,810,056 km (0.119 R)
• M14: 9,940,330 km (0.059 R)
• M15: 11,515,745 km (0.111 R)
• M16: 15,459,594 km (0.108 R)
• M17: 18,247,051 km (0.114 R)
• M18: 20,498,349 km (0.06 R)
• M19: 20,874,887 km (0.113 R)
• M20: 22,626,977 km (0.108 R)
• M21: 25,327,219 km (0.075 R)
• M22: 26,642,932 km (0.113 R)
• M23: 27,545,007 km (0.099 R)
• M24: 29,648,952 km (0.111 R)
• M25: 33,389,198 km (0.095 R)
• M26: 41,940,661 km (0.118 R)
• M27: 44,246,413 km (0.074 R)
• M28: 53,246,520 km (0.103 R)
• M29: 55,947,060 km (0.074 R)
• M30: 57,237,941 km (0.054 R)
• M31: 63,392,696 km (0.09 R)
• M32: 64,191,698 km (0.105 R)
• M33: 70,827,561 km (0.072 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 747.2

Radius: 3

Gravity: 83.02 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 10.1 AU - 10.74 AU

Year: 21718 Days

Day: 25 Hours

Environment

Temp: -241 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 82,748,496 km

• M1: 37,250 km (0.097 R)
• M2: 219,011 km (0.098 R)
• M3: 363,523 km (0.084 R)
• M4: 1,238,820 km (0.101 R)
• M5: 1,441,226 km (0.076 R)
• M6: 1,683,425 km (0.057 R)
• M7: 1,992,644 km (0.076 R)
• M8: 2,182,334 km (0.077 R)
• M9: 2,477,640 km (0.077 R)
• M10: 3,463,340 km (0.109 R)
• M11: 6,705,575 km (0.096 R)
• M12: 7,424,692 km (0.12 R)
• M13: 7,931,530 km (0.102 R)
• M14: 13,279,653 km (0.083 R)
• M15: 14,253,685 km (0.101 R)
• M16: 16,175,270 km (0.112 R)
• M17: 16,938,219 km (0.044 R)
• M18: 23,493,598 km (0.113 R)
• M19: 24,251,460 km (0.086 R)
• M20: 31,426,473 km (0.085 R)
• M21: 31,818,270 km (0.088 R)
• M22: 33,147,896 km (0.077 R)
• M23: 33,689,889 km (0.093 R)
• M24: 37,212,321 km (0.089 R)
• M25: 45,976,063 km (0.112 R)
• M26: 46,480,956 km (0.094 R)
• M27: 61,141,248 km (0.092 R)
• M28: 61,955,958 km (0.065 R)
• M29: 69,616,566 km (0.114 R)
• M30: 72,303,942 km (0.069 R)
• M31: 74,364,204 km (0.11 R)
• M32: 75,525,532 km (0.074 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 437 - 19,052 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit