🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.92

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.55 AU - 0.55 AU

Year: 263 Days

Day: 37.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.63 AU - 0.69 AU

Year: 346 Days

Day: 27.7 Hours

Environment

Temp: -128 °C

Axial Tilt: 8.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 717.8

Radius: 12.4

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.69 AU - 0.95 AU

Year: 479 Days

Day: 12.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,758,396 km

• M1: 154,235 km (0.043 R)
• M2: 729,439 km (0.099 R)
• M3: 1,315,564 km (0.117 R)
• M4: 1,744,760 km (0.085 R)
• M5: 2,634,119 km (0.1 R)
• M6: 3,269,611 km (0.086 R)
• M7: 3,701,201 km (0.082 R)
• M8: 4,142,963 km (0.045 R)
• M9: 5,737,228 km (0.08 R)
• M10: 6,202,328 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64

Radius: 12.4

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.06 AU - 1.48 AU

Year: 924 Days

Day: 6.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 76,758,396 km

• M1: 154,535 km (0.099 R)
• M2: 563,834 km (0.098 R)
• M3: 1,017,864 km (0.094 R)
• M4: 1,582,446 km (0.086 R)
• M5: 2,222,276 km (0.109 R)
• M6: 2,941,393 km (0.101 R)
• M7: 3,903,756 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.8

Radius: 12.8

Gravity: 0.38 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.52 AU - 1.56 AU

Year: 1234 Days

Day: 6.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 76,758,396 km

• M1: 159,322 km (0.08 R)
• M2: 890,107 km (0.1 R)
• M3: 2,115,463 km (0.097 R)
• M4: 4,299,742 km (0.078 R)
• M5: 5,356,950 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.9

Radius: 14.5

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.26 AU - 1.98 AU

Year: 1331 Days

Day: 7.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,758,396 km

• M1: 180,265 km (0.096 R)
• M2: 632,350 km (0.03 R)
• M3: 1,454,540 km (0.113 R)
• M4: 2,139,399 km (0.097 R)
• M5: 4,182,906 km (0.084 R)
• M6: 5,265,845 km (0.102 R)
• M7: 6,393,813 km (0.113 R)
• M8: 7,601,816 km (0.085 R)
• M9: 8,845,124 km (0.074 R)
• M10: 10,312,529 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.8

Radius: 9.5

Gravity: 6.71 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 3.31 AU - 4.27 AU

Year: 4764 Days

Day: 7.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 76,758,396 km

• M1: 118,332 km (0.028 R)
• M2: 544,387 km (0.105 R)
• M3: 2,058,317 km (0.116 R)
• M4: 2,547,801 km (0.088 R)
• M5: 3,075,583 km (0.12 R)
• M6: 3,446,436 km (0.078 R)
• M7: 3,825,367 km (0.108 R)
• M8: 4,162,112 km (0.082 R)
• M9: 4,543,287 km (0.057 R)
• M10: 4,844,278 km (0.072 R)
• M11: 5,403,325 km (0.118 R)
• M12: 8,751,326 km (0.102 R)
• M13: 9,499,914 km (0.053 R)
• M14: 9,952,447 km (0.11 R)
• M15: 10,592,726 km (0.092 R)
• M16: 12,434,575 km (0.072 R)
• M17: 12,777,603 km (0.095 R)
• M18: 16,682,257 km (0.105 R)
• M19: 19,423,937 km (0.076 R)
• M20: 22,236,676 km (0.094 R)
• M21: 24,154,671 km (0.113 R)
• M22: 26,180,525 km (0.071 R)
• M23: 26,582,644 km (0.099 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.4

Radius: 8.8

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 3.11 AU - 4.75 AU

Year: 5030 Days

Day: 7.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 135.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,758,396 km

• M1: 115,490 km (0.113 R)
• M2: 408,851 km (0.083 R)
• M3: 1,014,423 km (0.025 R)
• M4: 1,997,281 km (0.033 R)
• M5: 4,319,938 km (0.087 R)
• M6: 5,584,788 km (0.119 R)
• M7: 6,992,803 km (0.059 R)
• M8: 8,032,957 km (0.031 R)
• M9: 10,417,098 km (0.056 R)
• M10: 16,167,790 km (0.071 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 719.1

Radius: 5

Gravity: 28.76 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 7.82 AU - 11.76 AU

Year: 19778 Days

Day: 21.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 76,758,396 km

• M1: 63,729 km (0.113 R)
• M2: 234,569 km (0.078 R)
• M3: 762,351 km (0.106 R)
• M4: 3,978,705 km (0.09 R)
• M5: 4,473,126 km (0.062 R)
• M6: 4,861,183 km (0.091 R)
• M7: 5,119,538 km (0.098 R)
• M8: 6,506,759 km (0.09 R)
• M9: 6,684,930 km (0.108 R)
• M10: 8,386,157 km (0.115 R)
• M11: 12,072,099 km (0.102 R)
• M12: 15,026,508 km (0.093 R)
• M13: 16,711,578 km (0.098 R)
• M14: 17,215,125 km (0.044 R)
• M15: 29,775,811 km (0.112 R)
• M16: 31,267,451 km (0.073 R)
• M17: 39,036,816 km (0.074 R)
• M18: 42,195,426 km (0.118 R)
• M19: 43,916,101 km (0.086 R)
• M20: 48,167,672 km (0.096 R)
• M21: 51,266,741 km (0.115 R)
• M22: 58,048,911 km (0.109 R)
• M23: 71,367,759 km (0.106 R)
• M24: 75,841,782 km (0.059 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 273 - 11,682 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit