🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.24

Radius: 0.57

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.52 AU - 0.7 AU

Year: 303 Days

Day: 32.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 92.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.52 AU - 0.76 AU

Year: 326 Days

Day: 33.7 Hours

Environment

Temp: -132 °C

Axial Tilt: 52.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 40,776,825 km

• M1: 462,557 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 887.6

Radius: 14.5

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.61 AU - 0.83 AU

Year: 388 Days

Day: 7 Hours

Environment

Temp: -133 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,776,825 km

• M1: 180,265 km (0.055 R)
• M2: 735,124 km (0.083 R)
• M3: 1,302,848 km (0.094 R)
• M4: 1,791,584 km (0.082 R)
• M5: 2,498,135 km (0.061 R)
• M6: 3,057,481 km (0.101 R)
• M7: 3,890,891 km (0.092 R)
• M8: 4,575,600 km (0.106 R)
• M9: 5,420,679 km (0.106 R)
• M10: 5,872,464 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526

Radius: 13.5

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.83 AU - 1.05 AU

Year: 579 Days

Day: 10.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,776,825 km

• M1: 167,998 km (0.073 R)
• M2: 709,842 km (0.093 R)
• M3: 1,221,915 km (0.116 R)
• M4: 1,784,703 km (0.113 R)
• M5: 2,383,692 km (0.049 R)
• M6: 3,137,666 km (0.071 R)
• M7: 3,635,079 km (0.117 R)
• M8: 4,199,212 km (0.093 R)
• M9: 5,590,173 km (0.066 R)
• M10: 6,382,593 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.3

Radius: 8.6

Gravity: 12.02 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.45 AU - 1.65 AU

Year: 1227 Days

Day: 13.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 40,776,825 km

• M1: 107,262 km (0.081 R)
• M2: 397,182 km (0.115 R)
• M3: 689,497 km (0.08 R)
• M4: 1,103,883 km (0.073 R)
• M5: 1,470,547 km (0.074 R)
• M6: 1,907,373 km (0.111 R)
• M7: 2,179,791 km (0.11 R)
• M8: 2,553,935 km (0.06 R)
• M9: 3,085,306 km (0.112 R)
• M10: 3,463,490 km (0.11 R)
• M11: 3,838,532 km (0.119 R)
• M12: 4,631,999 km (0.107 R)
• M13: 5,232,784 km (0.08 R)
• M14: 5,816,964 km (0.053 R)
• M15: 6,230,153 km (0.111 R)
• M16: 6,712,157 km (0.032 R)
• M17: 7,832,496 km (0.119 R)
• M18: 8,222,946 km (0.052 R)
• M19: 9,164,216 km (0.053 R)
• M20: 10,175,498 km (0.051 R)
• M21: 10,606,938 km (0.092 R)
• M22: 11,085,202 km (0.096 R)
• M23: 11,721,143 km (0.03 R)
• M24: 12,158,417 km (0.111 R)
• M25: 12,455,968 km (0.065 R)
• M26: 12,796,452 km (0.062 R)

Asteroid Belt

Center: 2.76 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.6

Radius: 10.8

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.87 AU - 4.05 AU

Year: 5010 Days

Day: 10.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 40,776,825 km

• M1: 134,339 km (0.101 R)
• M2: 526,136 km (0.116 R)
• M3: 877,242 km (0.066 R)
• M4: 1,280,408 km (0.075 R)
• M5: 1,796,371 km (0.111 R)
• M6: 2,491,702 km (0.108 R)
• M7: 2,861,658 km (0.113 R)
• M8: 4,392,193 km (0.107 R)
• M9: 5,756,975 km (0.03 R)
• M10: 6,241,672 km (0.067 R)
• M11: 6,812,089 km (0.088 R)
• M12: 7,510,860 km (0.051 R)
• M13: 8,057,341 km (0.089 R)
• M14: 8,664,858 km (0.088 R)
• M15: 9,230,338 km (0.117 R)
• M16: 10,434,900 km (0.06 R)
• M17: 11,322,016 km (0.119 R)
• M18: 12,656,279 km (0.091 R)
• M19: 13,384,671 km (0.102 R)
• M20: 14,480,326 km (0.12 R)
• M21: 15,125,542 km (0.106 R)
• M22: 15,480,836 km (0.062 R)
• M23: 17,508,037 km (0.066 R)
• M24: 18,412,356 km (0.07 R)
• M25: 20,252,709 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 766

Radius: 10.2

Gravity: 7.36 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 3.18 AU - 4.76 AU

Year: 5029 Days

Day: 14.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 40,776,825 km

• M1: 127,009 km (0.118 R)
• M2: 493,374 km (0.114 R)
• M3: 891,155 km (0.061 R)
• M4: 1,326,185 km (0.046 R)
• M5: 2,334,475 km (0.081 R)
• M6: 3,117,919 km (0.118 R)
• M7: 3,570,901 km (0.06 R)
• M8: 3,974,067 km (0.057 R)
• M9: 4,739,709 km (0.086 R)
• M10: 5,340,644 km (0.097 R)
• M11: 6,084,445 km (0.083 R)
• M12: 7,170,226 km (0.111 R)
• M13: 7,777,743 km (0.12 R)
• M14: 11,061,117 km (0.041 R)
• M15: 11,629,888 km (0.088 R)
• M16: 12,168,141 km (0.043 R)
• M17: 12,519,397 km (0.109 R)
• M18: 15,695,360 km (0.077 R)
• M19: 16,413,729 km (0.119 R)
• M20: 19,645,342 km (0.095 R)
• M21: 21,555,707 km (0.107 R)
• M22: 22,368,472 km (0.067 R)
• M23: 27,679,795 km (0.07 R)
• M24: 28,026,413 km (0.034 R)
• M25: 28,551,651 km (0.046 R)
• M26: 29,441,759 km (0.119 R)
• M27: 30,534,122 km (0.089 R)
• M28: 30,997,128 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.2

Radius: 8

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 4.59 AU - 4.93 AU

Year: 6603 Days

Day: 14.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,776,825 km

• M1: 99,483 km (0.091 R)
• M2: 422,016 km (0.108 R)
• M3: 929,601 km (0.105 R)
• M4: 2,258,928 km (0.112 R)
• M5: 2,596,570 km (0.102 R)
• M6: 4,473,575 km (0.107 R)
• M7: 5,358,745 km (0.116 R)
• M8: 6,740,282 km (0.12 R)
• M9: 7,005,070 km (0.081 R)
• M10: 7,612,437 km (0.06 R)
• M11: 7,899,964 km (0.049 R)
• M12: 8,995,320 km (0.075 R)
• M13: 10,573,727 km (0.115 R)
• M14: 11,522,028 km (0.119 R)
• M15: 14,096,458 km (0.072 R)
• M16: 14,795,529 km (0.065 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 401.7

Radius: 7.8

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 6.17 AU - 6.59 AU

Year: 10246 Days

Day: 20 Hours

Environment

Temp: -230 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,776,825 km

• M1: 97,089 km (0.066 R)
• M2: 452,683 km (0.105 R)
• M3: 820,245 km (0.103 R)
• M4: 1,417,589 km (0.11 R)
• M5: 1,811,481 km (0.113 R)
• M6: 2,859,862 km (0.077 R)
• M7: 4,882,874 km (0.098 R)
• M8: 7,591,045 km (0.079 R)
• M9: 8,034,154 km (0.054 R)
• M10: 9,240,062 km (0.104 R)
• M11: 10,220,527 km (0.029 R)
• M12: 13,694,488 km (0.119 R)
• M13: 16,183,647 km (0.087 R)
• M14: 18,596,362 km (0.079 R)
• M15: 23,189,465 km (0.117 R)
• M16: 29,950,690 km (0.093 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: 411 - 11,052 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit