🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.62 AU - 0.9 AU

Year: 289 Days

Day: 12.9 Hours

Environment

Temp: -26 °C

Axial Tilt: 48.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 76,440,268 km

• M1: 25,282 km (0.109 R)
• M2: 542,891 km (0.113 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.3 AU - 1.66 AU

Year: 786 Days

Day: 46.1 Hours

Environment

Temp: -101 °C

Axial Tilt: 3.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.74 AU - 2.9 AU

Year: 1543 Days

Day: 27.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 164.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 3.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.1

Radius: 11.5

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 3.22 AU - 3.6 AU

Year: 2749 Days

Day: 10.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,440,268 km

• M1: 143,016 km (0.105 R)
• M2: 1,885,083 km (0.117 R)
• M3: 2,547,652 km (0.061 R)
• M4: 3,016,192 km (0.112 R)
• M5: 3,942,203 km (0.102 R)
• M6: 5,127,617 km (0.111 R)
• M7: 6,847,693 km (0.117 R)
• M8: 9,608,970 km (0.092 R)
• M9: 11,050,645 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.8

Radius: 10.1

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 4.56 AU - 4.62 AU

Year: 4293 Days

Day: 12.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 76,440,268 km

• M1: 125,662 km (0.113 R)
• M2: 441,164 km (0.099 R)
• M3: 796,309 km (0.082 R)
• M4: 1,232,836 km (0.075 R)
• M5: 1,703,471 km (0.114 R)
• M6: 2,381,748 km (0.046 R)
• M7: 2,921,796 km (0.103 R)
• M8: 3,872,939 km (0.1 R)
• M9: 4,478,960 km (0.092 R)
• M10: 5,357,249 km (0.108 R)
• M11: 6,774,540 km (0.101 R)
• M12: 7,189,374 km (0.093 R)
• M13: 9,801,802 km (0.074 R)
• M14: 10,542,611 km (0.031 R)
• M15: 12,228,878 km (0.106 R)
• M16: 15,246,417 km (0.108 R)
• M17: 16,524,431 km (0.115 R)
• M18: 18,235,831 km (0.06 R)
• M19: 25,728,590 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 898.4

Radius: 12.1

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.49 AU - 5.83 AU

Year: 5117 Days

Day: 8.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 76,440,268 km

• M1: 150,495 km (0.086 R)
• M2: 618,288 km (0.043 R)
• M3: 1,318,855 km (0.097 R)
• M4: 3,298,184 km (0.088 R)
• M5: 4,352,550 km (0.11 R)
• M6: 4,768,133 km (0.032 R)
• M7: 5,710,001 km (0.049 R)
• M8: 7,332,240 km (0.059 R)
• M9: 7,772,657 km (0.108 R)
• M10: 8,426,698 km (0.072 R)
• M11: 9,757,372 km (0.116 R)
• M12: 11,271,751 km (0.077 R)
• M13: 11,760,038 km (0.114 R)
• M14: 14,417,644 km (0.106 R)
• M15: 15,287,406 km (0.094 R)
• M16: 15,705,084 km (0.066 R)
• M17: 17,647,163 km (0.046 R)
• M18: 21,330,712 km (0.109 R)
• M19: 23,707,672 km (0.12 R)
• M20: 26,511,884 km (0.083 R)
• M21: 28,440,051 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.6

Radius: 13.8

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 5.1 AU - 5.5 AU

Year: 5327 Days

Day: 14.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 76,440,268 km

• M1: 175,478 km (0.103 R)
• M2: 638,185 km (0.056 R)
• M3: 1,067,530 km (0.09 R)
• M4: 1,952,402 km (0.05 R)
• M5: 2,863,453 km (0.062 R)
• M6: 3,365,802 km (0.076 R)
• M7: 3,814,297 km (0.114 R)
• M8: 4,912,944 km (0.057 R)
• M9: 6,498,382 km (0.101 R)
• M10: 9,318,302 km (0.096 R)
• M11: 10,565,798 km (0.04 R)
• M12: 11,680,303 km (0.084 R)
• M13: 15,787,811 km (0.093 R)
• M14: 22,220,819 km (0.118 R)
• M15: 26,970,551 km (0.117 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.6

Radius: 12.6

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 7.23 AU - 11.75 AU

Year: 12763 Days

Day: 6.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 76,440,268 km

• M1: 160,519 km (0.041 R)
• M2: 658,679 km (0.074 R)
• M3: 1,103,733 km (0.096 R)
• M4: 1,786,647 km (0.071 R)
• M5: 2,528,054 km (0.119 R)
• M6: 3,835,241 km (0.088 R)
• M7: 4,499,904 km (0.085 R)
• M8: 5,802,004 km (0.107 R)
• M9: 6,364,941 km (0.106 R)
• M10: 8,137,376 km (0.059 R)
• M11: 10,218,582 km (0.094 R)
• M12: 11,041,370 km (0.104 R)
• M13: 13,973,638 km (0.111 R)
• M14: 14,576,218 km (0.082 R)
• M15: 15,336,325 km (0.065 R)
• M16: 16,860,428 km (0.103 R)
• M17: 17,390,304 km (0.097 R)
• M18: 18,245,256 km (0.072 R)
• M19: 23,039,119 km (0.062 R)
• M20: 23,597,867 km (0.073 R)
• M21: 24,645,950 km (0.116 R)
• M22: 26,528,938 km (0.074 R)
• M23: 27,039,965 km (0.046 R)
• M24: 27,453,603 km (0.071 R)
• M25: 28,081,914 km (0.057 R)
• M26: 30,134,995 km (0.108 R)
• M27: 34,902,978 km (0.107 R)
• M28: 49,667,989 km (0.03 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 348

Radius: 6.4

Gravity: 8.5 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 15.91 AU - 16.33 AU

Year: 28255 Days

Day: 16.5 Hours

Environment

Temp: -213 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 76,440,268 km

• M1: 79,885 km (0.081 R)
• M2: 392,395 km (0.105 R)
• M3: 766,689 km (0.028 R)
• M4: 1,390,961 km (0.085 R)
• M5: 2,288,997 km (0.115 R)
• M6: 3,107,447 km (0.067 R)
• M7: 3,325,561 km (0.078 R)
• M8: 4,171,237 km (0.058 R)
• M9: 6,108,530 km (0.12 R)
• M10: 6,718,291 km (0.119 R)
• M11: 8,899,278 km (0.108 R)
• M12: 9,682,124 km (0.117 R)
• M13: 10,268,547 km (0.036 R)
• M14: 11,003,372 km (0.086 R)
• M15: 11,256,043 km (0.093 R)
• M16: 12,170,535 km (0.104 R)
• M17: 13,204,406 km (0.034 R)
• M18: 13,925,467 km (0.112 R)
• M19: 15,445,681 km (0.049 R)
• M20: 16,245,880 km (0.111 R)
• M21: 18,015,623 km (0.112 R)
• M22: 19,264,466 km (0.032 R)
• M23: 20,285,322 km (0.11 R)
• M24: 20,569,857 km (0.039 R)
• M25: 21,050,216 km (0.063 R)
• M26: 21,341,782 km (0.096 R)
• M27: 21,833,959 km (0.035 R)
• M28: 23,773,495 km (0.096 R)
• M29: 28,344,159 km (0.116 R)
• M30: 28,938,810 km (0.08 R)
• M31: 34,265,991 km (0.074 R)
• M32: 38,883,778 km (0.118 R)
• M33: 47,639,741 km (0.067 R)
• M34: 48,311,136 km (0.085 R)
• M35: 51,060,147 km (0.053 R)
• M36: 52,117,205 km (0.055 R)
• M37: 64,316,613 km (0.045 R)
• M38: 65,136,708 km (0.109 R)
• M39: 73,277,824 km (0.103 R)
• M40: 73,948,023 km (0.09 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 411 - 14,657 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit