🌌 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: 1.39

Radius: 1.14

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.53 AU - 0.55 AU

Year: 256 Days

Day: 14.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,231,910 km

• M1: 383,270 km (0.06 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 366.7

Radius: 11.7

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.72 AU - 1.08 AU

Year: 551 Days

Day: 7.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,231,910 km

• M1: 145,559 km (0.106 R)
• M2: 629,508 km (0.101 R)
• M3: 1,760,617 km (0.08 R)
• M4: 3,151,578 km (0.12 R)
• M5: 3,850,051 km (0.051 R)
• M6: 4,478,212 km (0.104 R)
• M7: 5,330,471 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.4

Radius: 9.3

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.43 AU - 1.67 AU

Year: 1246 Days

Day: 9.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,231,910 km

• M1: 116,238 km (0.066 R)
• M2: 413,788 km (0.12 R)
• M3: 838,795 km (0.03 R)
• M4: 1,823,897 km (0.068 R)
• M5: 2,203,726 km (0.085 R)
• M6: 2,996,595 km (0.07 R)
• M7: 3,445,239 km (0.079 R)
• M8: 3,773,606 km (0.119 R)
• M9: 5,192,243 km (0.099 R)
• M10: 5,683,821 km (0.107 R)
• M11: 7,393,276 km (0.076 R)
• M12: 8,090,103 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.2

Radius: 14.8

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 2.83 AU - 2.91 AU

Year: 3139 Days

Day: 10 Hours

Environment

Temp: -195 °C

Axial Tilt: 149.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 29,231,910 km

• M1: 201,808 km (0.114 R)
• M2: 1,050,626 km (0.116 R)
• M3: 3,069,449 km (0.088 R)
• M4: 3,650,487 km (0.077 R)
• M5: 6,549,694 km (0.108 R)
• M6: 8,193,625 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743.9

Radius: 14.5

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 3.1 AU - 4.06 AU

Year: 4374 Days

Day: 10.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 29,231,910 km

• M1: 180,265 km (0.115 R)
• M2: 676,033 km (0.049 R)
• M3: 1,507,348 km (0.107 R)
• M4: 1,999,226 km (0.083 R)
• M5: 2,550,494 km (0.113 R)
• M6: 3,127,643 km (0.091 R)
• M7: 4,332,504 km (0.094 R)
• M8: 6,062,454 km (0.03 R)
• M9: 6,935,656 km (0.065 R)
• M10: 9,128,163 km (0.101 R)
• M11: 10,148,720 km (0.112 R)
• M12: 10,621,299 km (0.105 R)
• M13: 11,518,288 km (0.111 R)
• M14: 12,416,773 km (0.112 R)
• M15: 13,617,894 km (0.068 R)
• M16: 16,958,863 km (0.092 R)
• M17: 17,564,585 km (0.109 R)
• M18: 18,883,590 km (0.118 R)
• M19: 20,267,669 km (0.088 R)
• M20: 21,296,902 km (0.071 R)
• M21: 25,449,889 km (0.041 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.3

Radius: 13.7

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 4.35 AU - 5.27 AU

Year: 6811 Days

Day: 5.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,231,910 km

• M1: 172,187 km (0.086 R)
• M2: 607,367 km (0.077 R)
• M3: 1,430,754 km (0.103 R)
• M4: 1,882,839 km (0.104 R)
• M5: 2,863,303 km (0.075 R)
• M6: 3,572,846 km (0.08 R)
• M7: 4,505,289 km (0.044 R)
• M8: 5,283,946 km (0.08 R)
• M9: 8,583,926 km (0.106 R)
• M10: 10,110,273 km (0.119 R)
• M11: 11,969,625 km (0.115 R)
• M12: 13,578,999 km (0.075 R)
• M13: 19,565,756 km (0.088 R)
• M14: 23,844,255 km (0.053 R)
• M15: 26,291,527 km (0.099 R)
• M16: 31,171,559 km (0.118 R)
• M17: 32,714,511 km (0.065 R)
• M18: 34,415,888 km (0.025 R)
• M19: 35,952,258 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 694.2

Radius: 10.5

Gravity: 6.3 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 4.31 AU - 7.07 AU

Year: 8764 Days

Day: 6.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 29,231,910 km

• M1: 132,095 km (0.075 R)
• M2: 850,913 km (0.055 R)
• M3: 1,225,057 km (0.103 R)
• M4: 1,828,086 km (0.091 R)
• M5: 2,303,658 km (0.087 R)
• M6: 2,658,803 km (0.083 R)
• M7: 3,094,432 km (0.083 R)
• M8: 4,109,902 km (0.111 R)
• M9: 4,694,680 km (0.085 R)
• M10: 5,462,417 km (0.107 R)
• M11: 7,564,865 km (0.095 R)
• M12: 9,297,657 km (0.058 R)
• M13: 9,913,851 km (0.089 R)
• M14: 10,863,199 km (0.108 R)
• M15: 11,333,535 km (0.093 R)
• M16: 14,952,158 km (0.093 R)
• M17: 18,162,079 km (0.027 R)
• M18: 20,122,110 km (0.069 R)
• M19: 20,593,643 km (0.115 R)
• M20: 20,992,321 km (0.107 R)
• M21: 24,905,203 km (0.028 R)
• M22: 28,092,087 km (0.063 R)
• M23: 28,879,719 km (0.077 R)
• M24: 29,278,996 km (0.112 R)
• M25: 30,190,945 km (0.085 R)
• M26: 35,036,420 km (0.03 R)
• M27: 35,490,748 km (0.073 R)
• M28: 38,902,926 km (0.085 R)
• M29: 39,758,177 km (0.043 R)
• M30: 41,759,946 km (0.059 R)
• M31: 42,915,141 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.7

Radius: 13.4

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 5.31 AU - 6.57 AU

Year: 9347 Days

Day: 10.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 29,231,910 km

• M1: 167,101 km (0.103 R)
• M2: 644,318 km (0.068 R)
• M3: 1,123,630 km (0.11 R)
• M4: 1,606,083 km (0.112 R)
• M5: 2,327,294 km (0.093 R)
• M6: 2,811,692 km (0.103 R)
• M7: 3,586,160 km (0.077 R)
• M8: 4,212,377 km (0.074 R)
• M9: 5,529,885 km (0.028 R)
• M10: 6,167,771 km (0.101 R)
• M11: 7,364,853 km (0.082 R)
• M12: 9,007,737 km (0.108 R)
• M13: 10,738,135 km (0.034 R)
• M14: 11,836,034 km (0.11 R)
• M15: 12,572,803 km (0.065 R)
• M16: 13,062,437 km (0.104 R)
• M17: 14,489,900 km (0.09 R)
• M18: 15,210,962 km (0.057 R)
• M19: 16,337,135 km (0.107 R)
• M20: 16,789,967 km (0.087 R)
• M21: 17,317,599 km (0.098 R)
• M22: 18,545,498 km (0.09 R)
• M23: 20,420,558 km (0.086 R)
• M24: 22,103,235 km (0.088 R)
• M25: 23,302,412 km (0.118 R)
• M26: 23,959,445 km (0.09 R)
• M27: 25,917,682 km (0.076 R)
• M28: 31,326,093 km (0.077 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 137.6

Radius: 3.5

Gravity: 11.23 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 6.28 AU - 6.66 AU

Year: 10626 Days

Day: 19.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 29,231,910 km

• M1: 46,525 km (0.066 R)
• M2: 189,541 km (0.103 R)
• M3: 380,427 km (0.09 R)
• M4: 1,897,649 km (0.098 R)
• M5: 4,820,642 km (0.044 R)
• M6: 7,623,507 km (0.071 R)
• M7: 10,055,071 km (0.082 R)
• M8: 15,844,509 km (0.093 R)
• M9: 26,354,806 km (0.102 R)
• M10: 27,180,437 km (0.114 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 530 - 11,106 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit