🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.22

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.53 AU - 0.59 AU

Year: 275 Days

Day: 28.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 26.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 78,452,665 km

• M1: 32,164 km (0.08 R)
• M2: 359,633 km (0.083 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.52 AU - 0.64 AU

Year: 290 Days

Day: 29.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 11.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.4

Radius: 13.5

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.64 AU - 0.82 AU

Year: 409 Days

Day: 12.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 78,452,665 km

• M1: 167,998 km (0.111 R)
• M2: 612,304 km (0.066 R)
• M3: 1,511,387 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.9

Radius: 8.1

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.46 AU - 2.12 AU

Year: 1571 Days

Day: 12.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 78,452,665 km

• M1: 104,868 km (0.111 R)
• M2: 1,295,368 km (0.097 R)
• M3: 2,721,185 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.4

Radius: 8

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.54 AU - 2.34 AU

Year: 1773 Days

Day: 12.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 78,452,665 km

• M1: 101,278 km (0.074 R)
• M2: 389,553 km (0.096 R)
• M3: 805,585 km (0.056 R)
• M4: 1,078,451 km (0.09 R)
• M5: 1,437,187 km (0.034 R)
• M6: 2,213,151 km (0.106 R)
• M7: 2,712,209 km (0.034 R)
• M8: 2,988,816 km (0.077 R)
• M9: 3,256,596 km (0.1 R)
• M10: 4,256,807 km (0.082 R)
• M11: 5,911,958 km (0.089 R)
• M12: 6,712,307 km (0.111 R)
• M13: 7,221,388 km (0.118 R)
• M14: 7,755,902 km (0.1 R)
• M15: 9,152,099 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.6

Radius: 11.9

Gravity: 6.73 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.29 AU - 2.55 AU

Year: 2470 Days

Day: 7.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 78,452,665 km

• M1: 147,952 km (0.062 R)
• M2: 541,544 km (0.059 R)
• M3: 934,239 km (0.085 R)
• M4: 1,436,738 km (0.106 R)
• M5: 2,223,623 km (0.108 R)
• M6: 2,638,607 km (0.086 R)
• M7: 3,071,543 km (0.098 R)
• M8: 3,589,451 km (0.065 R)
• M9: 4,207,141 km (0.096 R)
• M10: 5,426,962 km (0.109 R)
• M11: 6,051,533 km (0.082 R)
• M12: 6,494,044 km (0.075 R)
• M13: 7,138,062 km (0.107 R)
• M14: 8,283,234 km (0.119 R)
• M15: 9,219,717 km (0.099 R)
• M16: 9,732,389 km (0.089 R)
• M17: 11,552,247 km (0.078 R)
• M18: 16,115,580 km (0.109 R)
• M19: 16,968,886 km (0.057 R)
• M20: 19,057,422 km (0.12 R)
• M21: 20,439,108 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.9

Radius: 9.3

Gravity: 10.64 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 4.53 AU - 5.69 AU

Year: 7578 Days

Day: 6 Hours

Environment

Temp: -210 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 78,452,665 km

• M1: 115,639 km (0.113 R)
• M2: 416,331 km (0.064 R)
• M3: 859,889 km (0.102 R)
• M4: 1,287,589 km (0.06 R)
• M5: 2,077,017 km (0.112 R)
• M6: 2,817,526 km (0.092 R)
• M7: 3,317,482 km (0.112 R)
• M8: 3,650,038 km (0.055 R)
• M9: 4,004,885 km (0.088 R)
• M10: 5,694,892 km (0.084 R)
• M11: 6,568,693 km (0.033 R)
• M12: 9,537,762 km (0.074 R)
• M13: 12,155,126 km (0.065 R)
• M14: 12,834,301 km (0.096 R)
• M15: 14,517,426 km (0.049 R)
• M16: 19,208,666 km (0.112 R)
• M17: 22,899,844 km (0.097 R)
• M18: 24,821,877 km (0.057 R)
• M19: 25,822,088 km (0.091 R)
• M20: 27,229,206 km (0.107 R)
• M21: 28,000,084 km (0.03 R)
• M22: 29,083,771 km (0.096 R)
• M23: 29,585,522 km (0.107 R)
• M24: 30,503,305 km (0.078 R)
• M25: 33,260,992 km (0.116 R)
• M26: 37,347,707 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 473

Radius: 6.8

Gravity: 10.23 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 5.73 AU - 7.71 AU

Year: 11428 Days

Day: 15.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 78,452,665 km

• M1: 84,822 km (0.069 R)
• M2: 311,612 km (0.083 R)
• M3: 576,700 km (0.098 R)
• M4: 944,860 km (0.059 R)
• M5: 1,188,705 km (0.065 R)
• M6: 1,448,407 km (0.118 R)
• M7: 1,715,738 km (0.072 R)
• M8: 1,933,552 km (0.111 R)
• M9: 2,223,324 km (0.061 R)
• M10: 2,445,028 km (0.041 R)
• M11: 3,388,392 km (0.119 R)
• M12: 5,038,456 km (0.111 R)
• M13: 5,489,643 km (0.111 R)
• M14: 6,108,679 km (0.088 R)
• M15: 7,649,986 km (0.094 R)
• M16: 13,193,485 km (0.069 R)
• M17: 16,007,571 km (0.092 R)
• M18: 17,051,764 km (0.039 R)
• M19: 17,919,282 km (0.112 R)
• M20: 18,513,784 km (0.12 R)
• M21: 22,445,066 km (0.052 R)
• M22: 22,961,628 km (0.093 R)
• M23: 26,610,768 km (0.082 R)
• M24: 28,472,215 km (0.092 R)
• M25: 30,628,668 km (0.069 R)
• M26: 31,800,468 km (0.111 R)
• M27: 32,452,266 km (0.047 R)
• M28: 32,781,381 km (0.054 R)
• M29: 33,334,894 km (0.108 R)
• M30: 34,803,346 km (0.114 R)
• M31: 40,725,926 km (0.091 R)
• M32: 43,457,583 km (0.104 R)
• M33: 43,857,608 km (0.076 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 510.3

Radius: 4.3

Gravity: 27.6 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 9.26 AU - 12.94 AU

Year: 24260 Days

Day: 17.7 Hours

Environment

Temp: -240 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 78,452,665 km

• M1: 53,706 km (0.105 R)
• M2: 495,618 km (0.059 R)
• M3: 821,741 km (0.088 R)
• M4: 1,278,463 km (0.115 R)
• M5: 2,086,741 km (0.071 R)
• M6: 2,503,969 km (0.108 R)
• M7: 2,719,988 km (0.095 R)
• M8: 3,054,041 km (0.069 R)
• M9: 5,576,261 km (0.093 R)
• M10: 6,114,364 km (0.107 R)
• M11: 7,341,366 km (0.109 R)
• M12: 9,912,355 km (0.058 R)
• M13: 10,270,791 km (0.061 R)
• M14: 10,824,603 km (0.117 R)
• M15: 13,601,588 km (0.092 R)
• M16: 14,420,188 km (0.052 R)
• M17: 19,470,911 km (0.041 R)
• M18: 23,951,217 km (0.073 R)
• M19: 29,072,701 km (0.092 R)
• M20: 32,080,964 km (0.101 R)
• M21: 35,290,437 km (0.074 R)
• M22: 38,268,631 km (0.108 R)
• M23: 40,798,930 km (0.118 R)
• M24: 48,200,434 km (0.074 R)
• M25: 48,370,527 km (0.051 R)
• M26: 60,112,015 km (0.108 R)
• M27: 62,911,141 km (0.101 R)
• M28: 73,842,107 km (0.056 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 526 - 19,307 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit