🌌 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: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 23.4 Hours

Environment

Temp: -111 °C

Axial Tilt: 112.3 °

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: 499.7

Radius: 11.8

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.69 AU - 0.99 AU

Year: 505 Days

Day: 8.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,484,885 km

• M1: 146,756 km (0.116 R)
• M2: 545,883 km (0.109 R)
• M3: 945,758 km (0.054 R)
• M4: 1,464,563 km (0.06 R)
• M5: 3,013,500 km (0.032 R)
• M6: 3,906,300 km (0.031 R)
• M7: 4,952,138 km (0.114 R)
• M8: 5,524,500 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589.9

Radius: 11.2

Gravity: 4.7 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.86 AU - 1.16 AU

Year: 666 Days

Day: 9.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,484,885 km

• M1: 139,874 km (0.1 R)
• M2: 488,138 km (0.106 R)
• M3: 1,149,510 km (0.093 R)
• M4: 1,515,277 km (0.087 R)
• M5: 1,874,761 km (0.101 R)
• M6: 2,451,161 km (0.042 R)
• M7: 3,094,582 km (0.12 R)
• M8: 4,252,918 km (0.077 R)
• M9: 4,622,873 km (0.098 R)
• M10: 5,428,159 km (0.047 R)
• M11: 6,285,355 km (0.067 R)
• M12: 6,849,787 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.8

Radius: 11.7

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 2.62 AU - 3 AU

Year: 3090 Days

Day: 13.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,484,885 km

• M1: 145,559 km (0.117 R)
• M2: 522,695 km (0.051 R)
• M3: 1,414,149 km (0.031 R)
• M4: 2,407,927 km (0.075 R)
• M5: 3,563,122 km (0.074 R)
• M6: 4,051,410 km (0.066 R)
• M7: 5,606,629 km (0.103 R)
• M8: 6,519,026 km (0.098 R)
• M9: 8,455,720 km (0.082 R)
• M10: 9,264,297 km (0.104 R)
• M11: 10,784,959 km (0.098 R)
• M12: 11,511,855 km (0.089 R)
• M13: 13,063,335 km (0.089 R)
• M14: 14,531,488 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.3

Radius: 13.8

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.68 AU - 3.56 AU

Year: 3615 Days

Day: 9.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 42,484,885 km

• M1: 171,589 km (0.072 R)
• M2: 688,001 km (0.118 R)
• M3: 1,228,498 km (0.054 R)
• M4: 2,196,246 km (0.106 R)
• M5: 5,281,104 km (0.053 R)
• M6: 6,542,364 km (0.069 R)
• M7: 7,034,391 km (0.109 R)
• M8: 7,771,310 km (0.118 R)
• M9: 8,290,714 km (0.071 R)
• M10: 9,220,166 km (0.085 R)
• M11: 11,996,403 km (0.069 R)
• M12: 13,973,339 km (0.075 R)
• M13: 14,403,133 km (0.089 R)
• M14: 15,039,523 km (0.109 R)
• M15: 16,900,371 km (0.094 R)
• M16: 17,608,717 km (0.082 R)
• M17: 18,166,866 km (0.118 R)
• M18: 19,318,919 km (0.097 R)
• M19: 20,033,100 km (0.093 R)
• M20: 20,518,994 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 533.2

Radius: 10.2

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 3.13 AU - 3.29 AU

Year: 3773 Days

Day: 11.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 42,484,885 km

• M1: 127,009 km (0.095 R)
• M2: 480,359 km (0.078 R)
• M3: 927,357 km (0.119 R)
• M4: 1,921,884 km (0.036 R)
• M5: 2,269,250 km (0.075 R)
• M6: 2,627,387 km (0.117 R)
• M7: 3,593,640 km (0.028 R)
• M8: 5,121,782 km (0.103 R)
• M9: 6,709,165 km (0.109 R)
• M10: 7,294,093 km (0.119 R)
• M11: 8,149,344 km (0.089 R)
• M12: 10,019,467 km (0.073 R)
• M13: 10,784,211 km (0.116 R)
• M14: 11,849,199 km (0.092 R)
• M15: 13,408,158 km (0.118 R)
• M16: 13,794,120 km (0.119 R)
• M17: 14,638,750 km (0.088 R)
• M18: 15,307,602 km (0.091 R)
• M19: 16,158,664 km (0.117 R)
• M20: 16,928,944 km (0.053 R)
• M21: 18,602,196 km (0.069 R)
• M22: 22,476,930 km (0.081 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 502.7

Radius: 3.6

Gravity: 38.79 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 6.98 AU - 9 AU

Year: 14816 Days

Day: 18.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 42,484,885 km

• M1: 44,730 km (0.119 R)
• M2: 245,789 km (0.08 R)
• M3: 411,843 km (0.082 R)
• M4: 535,560 km (0.067 R)
• M5: 890,855 km (0.029 R)
• M6: 1,989,951 km (0.068 R)
• M7: 2,251,448 km (0.093 R)
• M8: 2,911,773 km (0.067 R)
• M9: 3,886,104 km (0.027 R)
• M10: 4,264,138 km (0.117 R)
• M11: 4,698,121 km (0.03 R)
• M12: 5,438,780 km (0.111 R)
• M13: 7,492,460 km (0.102 R)
• M14: 7,758,445 km (0.087 R)
• M15: 9,957,683 km (0.097 R)
• M16: 10,497,283 km (0.119 R)
• M17: 12,416,324 km (0.061 R)
• M18: 14,083,742 km (0.099 R)
• M19: 17,159,025 km (0.081 R)
• M20: 18,012,032 km (0.06 R)
• M21: 20,913,633 km (0.065 R)
• M22: 21,352,104 km (0.073 R)
• M23: 26,382,332 km (0.113 R)
• M24: 29,224,542 km (0.102 R)
• M25: 30,550,578 km (0.112 R)
• M26: 33,799,993 km (0.102 R)
• M27: 36,382,801 km (0.049 R)
• M28: 37,657,674 km (0.1 R)
• M29: 40,431,368 km (0.072 R)
• M30: 41,111,290 km (0.117 R)
• M31: 42,633,748 km (0.085 R)
• M32: 45,497,649 km (0.081 R)
• M33: 45,790,861 km (0.108 R)
• M34: 47,727,705 km (0.109 R)
• M35: 50,655,784 km (0.119 R)
• M36: 50,970,687 km (0.03 R)
• M37: 51,287,087 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 142.8

Radius: 4.6

Gravity: 6.75 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 8.22 AU - 10.16 AU

Year: 18276 Days

Day: 19.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 42,484,885 km

• M1: 58,194 km (0.049 R)
• M2: 330,163 km (0.094 R)
• M3: 600,785 km (0.118 R)
• M4: 785,838 km (0.036 R)
• M5: 1,018,911 km (0.104 R)
• M6: 1,370,765 km (0.11 R)
• M7: 2,348,687 km (0.104 R)
• M8: 3,002,878 km (0.098 R)
• M9: 3,872,042 km (0.09 R)
• M10: 4,323,079 km (0.118 R)
• M11: 5,048,779 km (0.118 R)
• M12: 6,091,924 km (0.101 R)
• M13: 6,554,182 km (0.108 R)
• M14: 7,668,985 km (0.092 R)
• M15: 11,336,527 km (0.087 R)
• M16: 14,177,689 km (0.082 R)
• M17: 15,827,305 km (0.111 R)
• M18: 16,225,535 km (0.047 R)
• M19: 20,975,716 km (0.05 R)
• M20: 21,135,038 km (0.101 R)
• M21: 23,279,673 km (0.045 R)
• M22: 23,881,056 km (0.119 R)
• M23: 24,054,739 km (0.081 R)
• M24: 24,669,287 km (0.03 R)
• M25: 26,205,209 km (0.042 R)
• M26: 26,855,810 km (0.116 R)
• M27: 28,383,054 km (0.102 R)
• M28: 29,666,006 km (0.042 R)
• M29: 40,604,153 km (0.038 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 387 - 10,976 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit