🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.5 AU - 0.58 AU

Year: 260 Days

Day: 22.1 Hours

Environment

Temp: -113 °C

Axial Tilt: 35 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.51 AU - 0.63 AU

Year: 282 Days

Day: 23.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 99 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.6

Radius: 12.6

Gravity: 0.47 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.55 AU - 0.83 AU

Year: 376 Days

Day: 13.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 63,833,620 km

• M1: 156,779 km (0.117 R)
• M2: 558,000 km (0.034 R)
• M3: 1,114,504 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.8

Radius: 10

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.73 AU - 0.87 AU

Year: 469 Days

Day: 8.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 63,833,620 km

• M1: 124,765 km (0.053 R)
• M2: 443,109 km (0.098 R)
• M3: 1,479,373 km (0.067 R)
• M4: 1,988,156 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.4

Radius: 10.6

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.3 AU - 1.88 AU

Year: 1315 Days

Day: 11.7 Hours

Environment

Temp: -178 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 63,833,620 km

• M1: 131,796 km (0.045 R)
• M2: 525,687 km (0.113 R)
• M3: 1,001,558 km (0.103 R)
• M4: 1,597,855 km (0.108 R)
• M5: 2,091,977 km (0.081 R)
• M6: 2,834,281 km (0.098 R)
• M7: 3,793,952 km (0.063 R)
• M8: 4,877,040 km (0.103 R)
• M9: 6,759,580 km (0.073 R)
• M10: 7,245,025 km (0.112 R)
• M11: 8,058,688 km (0.12 R)
• M12: 8,458,862 km (0.095 R)
• M13: 9,580,397 km (0.112 R)
• M14: 12,453,574 km (0.109 R)
• M15: 13,028,030 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464

Radius: 11.3

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.7 AU - 2.6 AU

Year: 2068 Days

Day: 13.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 63,833,620 km

• M1: 140,472 km (0.114 R)
• M2: 566,527 km (0.058 R)
• M3: 959,670 km (0.105 R)
• M4: 1,469,201 km (0.083 R)
• M5: 1,877,004 km (0.114 R)
• M6: 2,927,032 km (0.034 R)
• M7: 3,369,393 km (0.076 R)
• M8: 4,351,652 km (0.086 R)
• M9: 6,049,139 km (0.039 R)
• M10: 7,606,005 km (0.032 R)
• M11: 8,238,953 km (0.109 R)
• M12: 9,382,629 km (0.104 R)
• M13: 10,558,917 km (0.091 R)
• M14: 11,092,233 km (0.11 R)
• M15: 13,243,451 km (0.026 R)
• M16: 13,990,542 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.5

Radius: 12.5

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.04 AU - 2.28 AU

Year: 2083 Days

Day: 12 Hours

Environment

Temp: -200 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 63,833,620 km

• M1: 156,180 km (0.089 R)
• M2: 881,431 km (0.072 R)
• M3: 1,438,384 km (0.104 R)
• M4: 2,939,748 km (0.07 R)
• M5: 3,832,249 km (0.081 R)
• M6: 4,342,377 km (0.112 R)
• M7: 5,080,792 km (0.103 R)
• M8: 7,060,272 km (0.068 R)
• M9: 7,780,735 km (0.063 R)
• M10: 8,789,922 km (0.066 R)
• M11: 9,538,211 km (0.097 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 710

Radius: 9.2

Gravity: 8.39 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.34 AU - 2.92 AU

Year: 2798 Days

Day: 12.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,833,620 km

• M1: 116,238 km (0.079 R)
• M2: 622,926 km (0.067 R)
• M3: 1,117,945 km (0.078 R)
• M4: 1,665,323 km (0.093 R)
• M5: 2,084,048 km (0.041 R)
• M6: 2,512,795 km (0.096 R)
• M7: 3,016,192 km (0.111 R)
• M8: 3,492,063 km (0.089 R)
• M9: 5,398,538 km (0.118 R)
• M10: 5,887,125 km (0.109 R)
• M11: 9,066,828 km (0.026 R)
• M12: 17,864,080 km (0.112 R)
• M13: 19,716,850 km (0.053 R)
• M14: 20,260,189 km (0.092 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 736

Radius: 10.6

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 3.71 AU - 4.67 AU

Year: 5626 Days

Day: 13.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 63,833,620 km

• M1: 132,245 km (0.08 R)
• M2: 521,648 km (0.097 R)
• M3: 1,022,651 km (0.099 R)
• M4: 1,384,827 km (0.075 R)
• M5: 1,725,911 km (0.104 R)
• M6: 2,248,755 km (0.088 R)
• M7: 2,913,119 km (0.086 R)
• M8: 3,863,814 km (0.09 R)
• M9: 4,899,480 km (0.085 R)
• M10: 5,321,645 km (0.095 R)
• M11: 5,707,009 km (0.088 R)
• M12: 6,239,129 km (0.086 R)
• M13: 6,634,366 km (0.071 R)
• M14: 10,703,728 km (0.044 R)
• M15: 11,514,249 km (0.12 R)
• M16: 12,060,132 km (0.118 R)
• M17: 13,364,924 km (0.061 R)
• M18: 14,361,246 km (0.087 R)
• M19: 14,704,124 km (0.114 R)
• M20: 17,452,686 km (0.098 R)
• M21: 17,843,436 km (0.102 R)
• M22: 18,982,175 km (0.08 R)
• M23: 30,831,972 km (0.057 R)
• M24: 32,273,796 km (0.119 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 563.1

Radius: 4.7

Gravity: 25.49 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 8.74 AU - 8.74 AU

Year: 16950 Days

Day: 16.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 63,833,620 km

• M1: 58,493 km (0.072 R)
• M2: 265,237 km (0.076 R)
• M3: 424,260 km (0.105 R)
• M4: 599,887 km (0.061 R)
• M5: 865,124 km (0.071 R)
• M6: 1,166,415 km (0.12 R)
• M7: 1,384,827 km (0.101 R)
• M8: 1,597,855 km (0.049 R)
• M9: 1,797,718 km (0.101 R)
• M10: 2,051,735 km (0.05 R)
• M11: 2,477,640 km (0.087 R)
• M12: 3,185,238 km (0.108 R)
• M13: 3,341,568 km (0.113 R)
• M14: 5,678,436 km (0.036 R)
• M15: 6,306,597 km (0.071 R)
• M16: 6,980,087 km (0.074 R)
• M17: 8,718,863 km (0.11 R)
• M18: 9,879,294 km (0.03 R)
• M19: 16,387,998 km (0.082 R)
• M20: 18,310,331 km (0.056 R)
• M21: 19,847,150 km (0.096 R)
• M22: 20,737,107 km (0.065 R)
• M23: 21,933,292 km (0.096 R)
• M24: 22,691,903 km (0.099 R)
• M25: 23,961,689 km (0.106 R)
• M26: 25,381,373 km (0.065 R)
• M27: 26,323,092 km (0.071 R)
• M28: 27,071,380 km (0.112 R)
• M29: 34,076,899 km (0.062 R)
• M30: 35,479,977 km (0.069 R)
• M31: 41,049,057 km (0.101 R)
• M32: 45,169,731 km (0.118 R)
• M33: 47,329,774 km (0.028 R)
• M34: 49,881,465 km (0.083 R)
• M35: 52,860,258 km (0.071 R)
• M36: 54,393,038 km (0.072 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 379 - 14,341 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit