🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.06

Radius: 1.56

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.45 AU - 0.71 AU

Year: 290 Days

Day: 38.2 Hours

Environment

Temp: -119 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.56 AU - 0.62 AU

Year: 297 Days

Day: 39.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 54,012,948 km

• M1: 151,692 km (0.085 R)
• M2: 666,758 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 332.6

Radius: 9.7

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.8 AU - 1.32 AU

Year: 716 Days

Day: 12.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 54,012,948 km

• M1: 120,576 km (0.115 R)
• M2: 498,759 km (0.12 R)
• M3: 875,297 km (0.112 R)
• M4: 1,192,893 km (0.094 R)
• M5: 2,020,918 km (0.076 R)
• M6: 2,662,244 km (0.055 R)
• M7: 3,458,703 km (0.088 R)
• M8: 3,939,810 km (0.099 R)
• M9: 4,362,124 km (0.103 R)
• M10: 4,737,166 km (0.113 R)
• M11: 5,264,947 km (0.12 R)
• M12: 5,974,939 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71.4

Radius: 9.8

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.63 AU - 2.07 AU

Year: 1651 Days

Day: 9.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 54,012,948 km

• M1: 125,213 km (0.065 R)
• M2: 484,847 km (0.12 R)
• M3: 930,349 km (0.069 R)
• M4: 1,977,983 km (0.05 R)
• M5: 2,651,772 km (0.073 R)
• M6: 2,979,391 km (0.078 R)
• M7: 3,433,570 km (0.047 R)
• M8: 5,694,144 km (0.068 R)
• M9: 6,300,464 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.1

Radius: 13.4

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 3.94 AU - 6.52 AU

Year: 7846 Days

Day: 13 Hours

Environment

Temp: -217 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,012,948 km

• M1: 166,951 km (0.05 R)
• M2: 585,676 km (0.064 R)
• M3: 1,037,611 km (0.105 R)
• M4: 1,494,184 km (0.066 R)
• M5: 3,435,964 km (0.08 R)
• M6: 6,797,727 km (0.089 R)
• M7: 7,697,558 km (0.117 R)
• M8: 11,107,941 km (0.086 R)
• M9: 12,657,177 km (0.094 R)
• M10: 13,169,699 km (0.118 R)
• M11: 13,856,802 km (0.09 R)
• M12: 18,167,913 km (0.076 R)
• M13: 20,732,769 km (0.057 R)
• M14: 23,300,766 km (0.103 R)
• M15: 28,620,466 km (0.112 R)
• M16: 29,237,857 km (0.041 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985.2

Radius: 14.2

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 4.2 AU - 6.64 AU

Year: 8278 Days

Day: 8.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 54,012,948 km

• M1: 176,525 km (0.12 R)
• M2: 817,253 km (0.1 R)
• M3: 1,265,149 km (0.09 R)
• M4: 2,564,257 km (0.104 R)
• M5: 3,748,025 km (0.062 R)
• M6: 4,364,368 km (0.117 R)
• M7: 7,014,195 km (0.082 R)
• M8: 7,912,082 km (0.052 R)
• M9: 9,164,216 km (0.111 R)
• M10: 9,838,005 km (0.059 R)
• M11: 12,928,846 km (0.082 R)
• M12: 13,653,947 km (0.082 R)
• M13: 14,533,882 km (0.051 R)
• M14: 15,185,381 km (0.048 R)
• M15: 17,547,531 km (0.084 R)
• M16: 19,123,545 km (0.038 R)
• M17: 25,060,037 km (0.074 R)
• M18: 26,668,064 km (0.067 R)
• M19: 27,843,754 km (0.057 R)
• M20: 28,951,676 km (0.093 R)
• M21: 39,271,984 km (0.084 R)
• M22: 40,665,040 km (0.065 R)
• M23: 44,088,587 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 679.2

Radius: 5.8

Gravity: 20.19 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 6.34 AU - 9.16 AU

Year: 14153 Days

Day: 15.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 54,012,948 km

• M1: 73,901 km (0.115 R)
• M2: 378,333 km (0.087 R)
• M3: 582,983 km (0.117 R)
• M4: 1,421,778 km (0.042 R)
• M5: 2,100,055 km (0.075 R)
• M6: 2,375,465 km (0.093 R)
• M7: 3,894,930 km (0.059 R)
• M8: 8,980,959 km (0.101 R)
• M9: 9,287,634 km (0.096 R)
• M10: 9,814,069 km (0.114 R)
• M11: 10,926,479 km (0.104 R)
• M12: 12,244,436 km (0.051 R)
• M13: 15,263,920 km (0.081 R)
• M14: 16,983,547 km (0.059 R)
• M15: 17,690,247 km (0.114 R)
• M16: 22,628,174 km (0.097 R)
• M17: 23,291,491 km (0.099 R)
• M18: 29,406,753 km (0.087 R)
• M19: 36,253,398 km (0.046 R)
• M20: 39,428,613 km (0.11 R)
• M21: 51,344,383 km (0.108 R)
• M22: 59,533,520 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 900.2

Radius: 3.3

Gravity: 82.66 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 7.27 AU - 9.53 AU

Year: 15971 Days

Day: 15.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 54,012,948 km

• M1: 41,139 km (0.119 R)
• M2: 259,552 km (0.1 R)
• M3: 399,576 km (0.066 R)
• M4: 983,456 km (0.074 R)
• M5: 1,390,363 km (0.079 R)
• M6: 4,037,497 km (0.084 R)
• M7: 5,583,591 km (0.083 R)
• M8: 6,273,985 km (0.071 R)
• M9: 8,069,459 km (0.064 R)
• M10: 9,384,574 km (0.084 R)
• M11: 9,495,575 km (0.059 R)
• M12: 10,958,194 km (0.101 R)
• M13: 11,519,634 km (0.11 R)
• M14: 12,165,448 km (0.108 R)
• M15: 14,101,993 km (0.09 R)
• M16: 15,295,933 km (0.105 R)
• M17: 17,713,136 km (0.099 R)
• M18: 18,225,359 km (0.119 R)
• M19: 20,188,083 km (0.115 R)
• M20: 21,604,176 km (0.074 R)
• M21: 21,797,756 km (0.056 R)
• M22: 23,287,452 km (0.1 R)
• M23: 26,467,753 km (0.112 R)
• M24: 35,121,541 km (0.079 R)
• M25: 37,580,780 km (0.054 R)
• M26: 38,995,527 km (0.12 R)
• M27: 40,152,517 km (0.097 R)
• M28: 45,961,702 km (0.078 R)
• M29: 47,252,133 km (0.091 R)
• M30: 48,566,500 km (0.106 R)
• M31: 48,732,554 km (0.099 R)
• M32: 51,268,088 km (0.096 R)
• M33: 56,968,216 km (0.066 R)
• M34: 57,337,872 km (0.1 R)
• M35: 59,779,758 km (0.059 R)
• M36: 63,471,833 km (0.056 R)
• M37: 70,240,539 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 676.6

Radius: 7.8

Gravity: 11.12 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 8.41 AU - 10.49 AU

Year: 19057 Days

Day: 16.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 54,012,948 km

• M1: 97,239 km (0.099 R)
• M2: 369,956 km (0.104 R)
• M3: 1,135,597 km (0.111 R)
• M4: 1,775,577 km (0.04 R)
• M5: 2,196,695 km (0.087 R)
• M6: 2,926,583 km (0.108 R)
• M7: 3,185,238 km (0.106 R)
• M8: 3,631,189 km (0.087 R)
• M9: 5,221,714 km (0.092 R)
• M10: 5,603,936 km (0.078 R)
• M11: 7,656,569 km (0.107 R)
• M12: 10,579,861 km (0.12 R)
• M13: 13,454,533 km (0.084 R)
• M14: 14,027,942 km (0.075 R)
• M15: 14,320,705 km (0.065 R)
• M16: 17,309,072 km (0.108 R)
• M17: 18,159,536 km (0.105 R)
• M18: 19,126,985 km (0.085 R)
• M19: 19,943,790 km (0.108 R)
• M20: 20,973,322 km (0.113 R)
• M21: 22,235,330 km (0.103 R)
• M22: 26,324,289 km (0.113 R)
• M23: 27,448,068 km (0.09 R)
• M24: 28,253,652 km (0.107 R)
• M25: 38,466,250 km (0.111 R)
• M26: 39,765,956 km (0.076 R)
• M27: 42,605,474 km (0.095 R)
• M28: 47,688,660 km (0.054 R)
• M29: 54,412,486 km (0.063 R)
• M30: 57,905,745 km (0.034 R)
• M31: 61,155,460 km (0.12 R)
• M32: 62,726,088 km (0.112 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 220.4

Radius: 6.1

Gravity: 5.92 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 7.97 AU - 12.25 AU

Year: 21088 Days

Day: 20.8 Hours

Environment

Temp: -240 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,012,948 km

• M1: 75,846 km (0.078 R)
• M2: 494,571 km (0.06 R)
• M3: 1,460,524 km (0.112 R)
• M4: 3,324,813 km (0.079 R)
• M5: 4,958,122 km (0.065 R)
• M6: 7,836,236 km (0.062 R)
• M7: 9,752,435 km (0.053 R)
• M8: 17,185,504 km (0.064 R)
• M9: 22,378,495 km (0.094 R)
• M10: 24,508,470 km (0.099 R)
• M11: 26,266,993 km (0.09 R)
• M12: 31,477,038 km (0.055 R)
• M13: 34,382,827 km (0.118 R)
• M14: 43,320,701 km (0.115 R)
• M15: 47,349,970 km (0.113 R)
• M16: 53,207,923 km (0.086 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 329 - 13,333 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit