🌌 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: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.53 AU - 0.55 AU

Year: 256 Days

Day: 30 Hours

Environment

Temp: -120 °C

Axial Tilt: 39.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 275.9

Radius: 12.5

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.63 AU - 0.89 AU

Year: 428 Days

Day: 7.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,971,806 km

• M1: 155,432 km (0.081 R)
• M2: 580,589 km (0.099 R)
• M3: 995,424 km (0.108 R)
• M4: 1,422,227 km (0.089 R)
• M5: 1,966,314 km (0.12 R)
• M6: 2,432,013 km (0.077 R)
• M7: 2,971,163 km (0.106 R)
• M8: 3,644,803 km (0.062 R)
• M9: 4,048,418 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 733.7

Radius: 10.3

Gravity: 6.92 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.2 AU - 2.6 AU

Year: 2401 Days

Day: 6.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 56,971,806 km

• M1: 128,205 km (0.083 R)
• M2: 462,557 km (0.057 R)
• M3: 835,504 km (0.098 R)
• M4: 1,655,600 km (0.073 R)
• M5: 2,261,471 km (0.106 R)
• M6: 2,743,326 km (0.117 R)
• M7: 3,173,868 km (0.09 R)
• M8: 3,686,540 km (0.118 R)
• M9: 4,440,962 km (0.068 R)
• M10: 5,464,062 km (0.057 R)
• M11: 6,255,585 km (0.035 R)
• M12: 6,749,258 km (0.096 R)
• M13: 7,328,052 km (0.113 R)
• M14: 9,980,123 km (0.097 R)
• M15: 11,240,335 km (0.095 R)
• M16: 11,764,975 km (0.101 R)
• M17: 13,082,035 km (0.054 R)
• M18: 13,707,952 km (0.088 R)
• M19: 14,306,942 km (0.034 R)
• M20: 15,458,696 km (0.096 R)
• M21: 15,805,913 km (0.046 R)
• M22: 16,158,365 km (0.114 R)
• M23: 17,621,133 km (0.092 R)
• M24: 18,384,830 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.7

Radius: 8.2

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 2.17 AU - 3.07 AU

Year: 2738 Days

Day: 8.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,971,806 km

• M1: 102,774 km (0.118 R)
• M2: 374,743 km (0.051 R)
• M3: 1,752,240 km (0.072 R)
• M4: 2,194,900 km (0.108 R)
• M5: 2,553,336 km (0.062 R)
• M6: 2,889,184 km (0.096 R)
• M7: 4,058,441 km (0.104 R)
• M8: 4,333,850 km (0.076 R)
• M9: 5,145,419 km (0.104 R)
• M10: 7,151,377 km (0.087 R)
• M11: 12,016,599 km (0.078 R)
• M12: 12,963,254 km (0.12 R)
• M13: 14,226,758 km (0.075 R)
• M14: 15,714,060 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.2

Radius: 14.2

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 3.62 AU - 4.72 AU

Year: 5498 Days

Day: 5.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 56,971,806 km

• M1: 176,675 km (0.075 R)
• M2: 965,953 km (0.112 R)
• M3: 1,786,498 km (0.088 R)
• M4: 2,360,954 km (0.113 R)
• M5: 2,929,725 km (0.069 R)
• M6: 3,466,033 km (0.052 R)
• M7: 3,955,517 km (0.111 R)
• M8: 5,128,664 km (0.115 R)
• M9: 6,152,212 km (0.087 R)
• M10: 7,006,267 km (0.038 R)
• M11: 8,192,578 km (0.043 R)
• M12: 10,476,488 km (0.091 R)
• M13: 11,006,813 km (0.114 R)
• M14: 12,025,874 km (0.112 R)
• M15: 12,607,660 km (0.08 R)
• M16: 14,198,334 km (0.083 R)
• M17: 15,919,158 km (0.029 R)
• M18: 17,161,419 km (0.09 R)
• M19: 17,775,219 km (0.083 R)
• M20: 18,659,193 km (0.119 R)
• M21: 22,856,759 km (0.042 R)
• M22: 23,375,714 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.7

Radius: 9.4

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 4.82 AU - 4.94 AU

Year: 6961 Days

Day: 8.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 56,971,806 km

• M1: 117,434 km (0.065 R)
• M2: 727,794 km (0.099 R)
• M3: 1,103,284 km (0.12 R)
• M4: 2,335,522 km (0.105 R)
• M5: 2,639,206 km (0.118 R)
• M6: 3,023,971 km (0.042 R)
• M7: 3,841,673 km (0.073 R)
• M8: 4,152,538 km (0.116 R)
• M9: 4,528,477 km (0.111 R)
• M10: 7,383,403 km (0.07 R)
• M11: 8,554,904 km (0.063 R)
• M12: 11,217,596 km (0.093 R)
• M13: 11,856,080 km (0.113 R)
• M14: 12,761,147 km (0.074 R)
• M15: 16,670,289 km (0.119 R)
• M16: 23,741,631 km (0.109 R)
• M17: 24,793,603 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.7

Radius: 13.6

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 4.16 AU - 5.8 AU

Year: 7176 Days

Day: 14.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,971,806 km

• M1: 169,494 km (0.089 R)
• M2: 680,820 km (0.056 R)
• M3: 1,120,039 km (0.119 R)
• M4: 1,633,908 km (0.101 R)
• M5: 2,204,325 km (0.094 R)
• M6: 3,136,020 km (0.107 R)
• M7: 4,396,981 km (0.12 R)
• M8: 4,904,865 km (0.05 R)
• M9: 5,972,246 km (0.104 R)
• M10: 7,265,669 km (0.111 R)
• M11: 8,781,545 km (0.104 R)
• M12: 9,872,113 km (0.087 R)
• M13: 11,153,269 km (0.075 R)
• M14: 17,058,645 km (0.097 R)
• M15: 17,751,732 km (0.065 R)
• M16: 20,558,039 km (0.076 R)
• M17: 21,422,714 km (0.069 R)
• M18: 22,475,883 km (0.094 R)
• M19: 28,650,984 km (0.06 R)
• M20: 29,630,850 km (0.081 R)
• M21: 31,969,065 km (0.104 R)
• M22: 36,324,607 km (0.083 R)
• M23: 39,840,007 km (0.076 R)
• M24: 40,447,225 km (0.109 R)
• M25: 41,431,579 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 217.8

Radius: 7.3

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 9.93 AU - 11.71 AU

Year: 22980 Days

Day: 15.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 151.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 56,971,806 km

• M1: 90,806 km (0.077 R)
• M2: 328,218 km (0.066 R)
• M3: 566,677 km (0.114 R)
• M4: 801,097 km (0.091 R)
• M5: 1,492,388 km (0.087 R)
• M6: 1,885,681 km (0.106 R)
• M7: 2,326,396 km (0.034 R)
• M8: 2,722,532 km (0.11 R)
• M9: 3,596,333 km (0.102 R)
• M10: 4,011,018 km (0.103 R)
• M11: 4,274,909 km (0.089 R)
• M12: 5,921,233 km (0.098 R)
• M13: 7,200,894 km (0.074 R)
• M14: 8,321,681 km (0.09 R)
• M15: 8,607,113 km (0.077 R)
• M16: 9,147,311 km (0.065 R)
• M17: 10,080,054 km (0.069 R)
• M18: 10,848,090 km (0.107 R)
• M19: 14,246,056 km (0.108 R)
• M20: 17,662,273 km (0.087 R)
• M21: 18,054,967 km (0.104 R)
• M22: 19,021,519 km (0.065 R)
• M23: 20,708,235 km (0.062 R)
• M24: 22,584,192 km (0.101 R)
• M25: 27,817,126 km (0.026 R)
• M26: 29,213,921 km (0.103 R)
• M27: 31,567,993 km (0.115 R)
• M28: 31,914,312 km (0.056 R)
• M29: 32,968,528 km (0.107 R)
• M30: 33,444,399 km (0.12 R)
• M31: 37,418,167 km (0.077 R)
• M32: 42,251,974 km (0.037 R)
• M33: 44,672,916 km (0.042 R)
• M34: 45,696,016 km (0.093 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: 232 - 11,954 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit