🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.39 AU - 0.63 AU

Year: 239 Days

Day: 45.6 Hours

Environment

Temp: -116 °C

Axial Tilt: 12.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 847.2

Radius: 12.8

Gravity: 5.17 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.84 AU - 0.84 AU

Year: 505 Days

Day: 9.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,054,740 km

• M1: 172,935 km (0.091 R)
• M2: 576,251 km (0.079 R)
• M3: 1,296,116 km (0.114 R)
• M4: 1,960,330 km (0.092 R)
• M5: 2,406,431 km (0.095 R)
• M6: 2,954,708 km (0.084 R)
• M7: 4,031,214 km (0.049 R)
• M8: 4,605,969 km (0.094 R)
• M9: 5,101,437 km (0.092 R)
• M10: 6,705,425 km (0.047 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.2

Radius: 11.2

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.69 AU - 1.05 AU

Year: 532 Days

Day: 13.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 37,054,740 km

• M1: 139,575 km (0.069 R)
• M2: 498,460 km (0.116 R)
• M3: 847,023 km (0.084 R)
• M4: 1,851,274 km (0.069 R)
• M5: 2,216,891 km (0.117 R)
• M6: 2,797,480 km (0.118 R)
• M7: 3,813,100 km (0.092 R)
• M8: 4,607,315 km (0.099 R)
• M9: 4,969,342 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.7

Radius: 13.1

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.75 AU - 1.07 AU

Year: 569 Days

Day: 6.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 37,054,740 km

• M1: 163,361 km (0.117 R)
• M2: 590,313 km (0.067 R)
• M3: 1,014,722 km (0.115 R)
• M4: 1,839,156 km (0.097 R)
• M5: 2,502,473 km (0.109 R)
• M6: 3,085,905 km (0.036 R)
• M7: 3,555,193 km (0.064 R)
• M8: 4,296,152 km (0.089 R)
• M9: 4,900,826 km (0.09 R)
• M10: 5,417,836 km (0.092 R)
• M11: 6,183,478 km (0.059 R)
• M12: 6,747,014 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869

Radius: 12.8

Gravity: 5.3 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.52 AU - 2.24 AU

Year: 1691 Days

Day: 12.7 Hours

Environment

Temp: -177 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 37,054,740 km

• M1: 159,172 km (0.108 R)
• M2: 659,577 km (0.11 R)
• M3: 1,194,988 km (0.091 R)
• M4: 1,748,799 km (0.065 R)
• M5: 3,418,311 km (0.066 R)
• M6: 4,413,586 km (0.102 R)
• M7: 6,120,498 km (0.096 R)
• M8: 7,671,080 km (0.078 R)
• M9: 8,384,213 km (0.117 R)
• M10: 8,915,584 km (0.078 R)
• M11: 9,536,266 km (0.083 R)
• M12: 10,574,625 km (0.026 R)
• M13: 11,496,447 km (0.112 R)
• M14: 12,351,249 km (0.107 R)
• M15: 12,835,049 km (0.1 R)
• M16: 13,415,488 km (0.065 R)
• M17: 14,056,814 km (0.103 R)
• M18: 14,853,423 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.5

Radius: 9.3

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 3.69 AU - 4.47 AU

Year: 5406 Days

Day: 6.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,054,740 km

• M1: 115,639 km (0.108 R)
• M2: 471,084 km (0.109 R)
• M3: 763,099 km (0.051 R)
• M4: 1,410,409 km (0.115 R)
• M5: 2,229,158 km (0.115 R)
• M6: 2,669,873 km (0.098 R)
• M7: 3,353,087 km (0.084 R)
• M8: 4,268,775 km (0.09 R)
• M9: 4,558,995 km (0.098 R)
• M10: 7,004,472 km (0.078 R)
• M11: 8,266,928 km (0.049 R)
• M12: 8,654,087 km (0.092 R)
• M13: 9,745,703 km (0.065 R)
• M14: 14,945,575 km (0.11 R)
• M15: 16,160,609 km (0.059 R)
• M16: 16,869,105 km (0.113 R)
• M17: 17,810,225 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 148.6

Radius: 3.2

Gravity: 14.51 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 4.75 AU - 7.77 AU

Year: 10275 Days

Day: 20.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 37,054,740 km

• M1: 41,439 km (0.082 R)
• M2: 188,793 km (0.066 R)
• M3: 364,570 km (0.072 R)
• M4: 486,492 km (0.085 R)
• M5: 761,453 km (0.117 R)
• M6: 1,150,707 km (0.09 R)
• M7: 1,475,633 km (0.095 R)
• M8: 1,803,851 km (0.062 R)
• M9: 1,956,591 km (0.084 R)
• M10: 2,303,957 km (0.112 R)
• M11: 3,656,920 km (0.114 R)
• M12: 3,856,484 km (0.048 R)
• M13: 4,350,755 km (0.113 R)
• M14: 4,524,438 km (0.093 R)
• M15: 4,651,297 km (0.042 R)
• M16: 4,992,530 km (0.068 R)
• M17: 5,210,643 km (0.071 R)
• M18: 5,813,224 km (0.116 R)
• M19: 7,189,823 km (0.093 R)
• M20: 7,432,770 km (0.084 R)
• M21: 8,383,165 km (0.068 R)
• M22: 8,848,116 km (0.075 R)
• M23: 9,618,844 km (0.102 R)
• M24: 9,744,506 km (0.104 R)
• M25: 11,432,718 km (0.076 R)
• M26: 12,052,352 km (0.115 R)
• M27: 13,725,006 km (0.093 R)
• M28: 14,369,773 km (0.116 R)
• M29: 21,389,653 km (0.057 R)
• M30: 22,844,792 km (0.072 R)
• M31: 23,672,666 km (0.102 R)
• M32: 28,198,899 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 802

Radius: 3.9

Gravity: 52.73 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 7.52 AU - 8.12 AU

Year: 14346 Days

Day: 20 Hours

Environment

Temp: -218 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 37,054,740 km

• M1: 50,115 km (0.076 R)
• M2: 203,004 km (0.064 R)
• M3: 381,026 km (0.052 R)
• M4: 569,968 km (0.102 R)
• M5: 741,557 km (0.057 R)
• M6: 981,362 km (0.116 R)
• M7: 1,113,158 km (0.035 R)
• M8: 1,747,752 km (0.096 R)
• M9: 1,942,977 km (0.105 R)
• M10: 2,572,335 km (0.091 R)
• M11: 3,094,582 km (0.099 R)
• M12: 5,333,912 km (0.076 R)
• M13: 6,339,509 km (0.072 R)
• M14: 6,588,290 km (0.038 R)
• M15: 8,026,823 km (0.073 R)
• M16: 8,171,634 km (0.043 R)
• M17: 9,077,150 km (0.059 R)
• M18: 10,272,287 km (0.097 R)
• M19: 10,966,422 km (0.088 R)
• M20: 11,385,595 km (0.072 R)
• M21: 16,104,360 km (0.084 R)
• M22: 16,567,515 km (0.111 R)
• M23: 22,548,438 km (0.102 R)
• M24: 30,286,388 km (0.098 R)
• M25: 33,545,079 km (0.081 R)
• M26: 52,872,525 km (0.111 R)
• M27: 59,563,589 km (0.097 R)
• M28: 63,111,153 km (0.111 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 152.6

Radius: 5.9

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 6.81 AU - 8.87 AU

Year: 14401 Days

Day: 24.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,054,740 km

• M1: 76,145 km (0.1 R)
• M2: 401,371 km (0.089 R)
• M3: 876,494 km (0.052 R)
• M4: 1,175,091 km (0.103 R)
• M5: 1,916,349 km (0.117 R)
• M6: 2,493,797 km (0.102 R)
• M7: 2,678,550 km (0.109 R)
• M8: 3,013,649 km (0.06 R)
• M9: 3,288,460 km (0.077 R)
• M10: 3,864,113 km (0.089 R)
• M11: 4,836,050 km (0.073 R)
• M12: 5,929,012 km (0.078 R)
• M13: 7,363,806 km (0.072 R)
• M14: 8,385,110 km (0.101 R)
• M15: 8,887,011 km (0.084 R)
• M16: 12,328,061 km (0.034 R)
• M17: 19,654,019 km (0.112 R)
• M18: 22,149,311 km (0.065 R)
• M19: 23,842,609 km (0.07 R)
• M20: 25,620,431 km (0.026 R)
• M21: 35,956,297 km (0.108 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 228 - 17,349 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit