🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.59 AU - 0.73 AU

Year: 346 Days

Day: 28.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421

Radius: 14.6

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.62 AU - 0.86 AU

Year: 411 Days

Day: 10.4 Hours

Environment

Temp: -147 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,107,130 km

• M1: 181,612 km (0.061 R)
• M2: 980,315 km (0.091 R)
• M3: 1,446,911 km (0.061 R)
• M4: 2,006,556 km (0.1 R)
• M5: 2,485,120 km (0.116 R)
• M6: 3,060,922 km (0.102 R)
• M7: 3,587,507 km (0.055 R)
• M8: 4,380,076 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.2

Radius: 10.7

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 2.17 AU - 2.87 AU

Year: 2583 Days

Day: 6 Hours

Environment

Temp: -198 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,107,130 km

• M1: 133,142 km (0.108 R)
• M2: 489,035 km (0.088 R)
• M3: 926,460 km (0.09 R)
• M4: 1,741,020 km (0.089 R)
• M5: 2,211,356 km (0.056 R)
• M6: 3,206,780 km (0.091 R)
• M7: 3,768,670 km (0.092 R)
• M8: 4,232,273 km (0.119 R)
• M9: 7,004,472 km (0.059 R)
• M10: 7,647,443 km (0.038 R)
• M11: 8,393,189 km (0.06 R)
• M12: 10,358,456 km (0.096 R)
• M13: 11,271,452 km (0.112 R)
• M14: 12,319,983 km (0.109 R)
• M15: 13,609,367 km (0.073 R)
• M16: 15,081,560 km (0.087 R)
• M17: 17,327,921 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746.2

Radius: 14.6

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 2.82 AU - 3 AU

Year: 3205 Days

Day: 13.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 71,107,130 km

• M1: 183,257 km (0.119 R)
• M2: 690,095 km (0.113 R)
• M3: 1,189,602 km (0.108 R)
• M4: 1,648,269 km (0.113 R)
• M5: 2,383,244 km (0.057 R)
• M6: 2,877,814 km (0.108 R)
• M7: 3,574,192 km (0.118 R)
• M8: 4,336,992 km (0.101 R)
• M9: 5,106,972 km (0.097 R)
• M10: 8,488,333 km (0.111 R)
• M11: 12,047,715 km (0.101 R)
• M12: 12,679,317 km (0.073 R)
• M13: 16,944,053 km (0.08 R)
• M14: 17,795,265 km (0.112 R)
• M15: 18,734,441 km (0.054 R)
• M16: 19,338,068 km (0.105 R)
• M17: 20,330,949 km (0.044 R)
• M18: 21,033,012 km (0.095 R)
• M19: 22,016,319 km (0.032 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.6

Radius: 8.6

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 3.65 AU - 3.86 AU

Year: 4689 Days

Day: 13.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 71,107,130 km

• M1: 106,962 km (0.039 R)
• M2: 604,675 km (0.094 R)
• M3: 1,029,383 km (0.117 R)
• M4: 1,522,158 km (0.109 R)
• M5: 2,518,331 km (0.082 R)
• M6: 2,841,612 km (0.101 R)
• M7: 4,264,886 km (0.118 R)
• M8: 4,798,501 km (0.109 R)
• M9: 6,027,149 km (0.057 R)
• M10: 6,342,651 km (0.099 R)
• M11: 7,486,027 km (0.03 R)
• M12: 8,367,906 km (0.08 R)
• M13: 9,393,250 km (0.103 R)
• M14: 11,170,473 km (0.064 R)
• M15: 12,411,836 km (0.111 R)
• M16: 13,209,043 km (0.105 R)
• M17: 14,905,184 km (0.092 R)
• M18: 16,797,896 km (0.097 R)
• M19: 21,250,976 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.2

Radius: 8.8

Gravity: 12.09 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 4.06 AU - 4.36 AU

Year: 5577 Days

Day: 5.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 71,107,130 km

• M1: 109,506 km (0.105 R)
• M2: 466,596 km (0.108 R)
• M3: 832,512 km (0.11 R)
• M4: 1,149,211 km (0.075 R)
• M5: 1,534,276 km (0.038 R)
• M6: 1,959,283 km (0.089 R)
• M7: 2,906,986 km (0.074 R)
• M8: 3,607,104 km (0.069 R)
• M9: 4,009,373 km (0.088 R)
• M10: 4,574,254 km (0.086 R)
• M11: 7,303,368 km (0.027 R)
• M12: 8,185,696 km (0.048 R)
• M13: 9,353,607 km (0.081 R)
• M14: 9,932,102 km (0.077 R)
• M15: 10,207,063 km (0.025 R)
• M16: 11,259,185 km (0.094 R)
• M17: 13,465,753 km (0.11 R)
• M18: 15,087,693 km (0.111 R)
• M19: 18,232,689 km (0.065 R)
• M20: 20,359,971 km (0.074 R)
• M21: 21,789,827 km (0.118 R)
• M22: 23,205,023 km (0.054 R)
• M23: 23,527,706 km (0.106 R)
• M24: 25,270,970 km (0.064 R)
• M25: 32,199,894 km (0.055 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 716.7

Radius: 4.9

Gravity: 29.85 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 7.16 AU - 8.1 AU

Year: 13608 Days

Day: 15.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 71,107,130 km

• M1: 61,036 km (0.104 R)
• M2: 258,356 km (0.077 R)
• M3: 438,920 km (0.04 R)
• M4: 1,501,813 km (0.084 R)
• M5: 1,805,198 km (0.117 R)
• M6: 2,148,225 km (0.04 R)
• M7: 2,892,774 km (0.104 R)
• M8: 3,388,541 km (0.093 R)
• M9: 4,741,205 km (0.119 R)
• M10: 5,111,460 km (0.117 R)
• M11: 5,610,219 km (0.089 R)
• M12: 7,433,668 km (0.097 R)
• M13: 8,847,966 km (0.07 R)
• M14: 9,724,310 km (0.031 R)
• M15: 10,211,102 km (0.079 R)
• M16: 11,889,889 km (0.08 R)
• M17: 12,446,244 km (0.067 R)
• M18: 14,635,010 km (0.045 R)
• M19: 15,130,179 km (0.068 R)
• M20: 16,682,855 km (0.065 R)
• M21: 17,616,196 km (0.107 R)
• M22: 18,665,925 km (0.113 R)
• M23: 19,671,372 km (0.112 R)
• M24: 20,274,251 km (0.048 R)
• M25: 25,446,897 km (0.093 R)
• M26: 27,313,878 km (0.114 R)
• M27: 29,048,316 km (0.074 R)
• M28: 35,190,506 km (0.109 R)
• M29: 42,428,649 km (0.09 R)
• M30: 43,001,160 km (0.063 R)
• M31: 44,602,156 km (0.119 R)
• M32: 52,218,184 km (0.088 R)
• M33: 54,039,388 km (0.091 R)
• M34: 59,042,839 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 72.6

Radius: 3.9

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 7.81 AU - 7.83 AU

Year: 14120 Days

Day: 24.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,107,130 km

• M1: 48,470 km (0.04 R)
• M2: 201,209 km (0.114 R)
• M3: 667,506 km (0.07 R)
• M4: 1,492,239 km (0.066 R)
• M5: 2,362,300 km (0.103 R)
• M6: 2,914,167 km (0.097 R)
• M7: 3,442,845 km (0.081 R)
• M8: 6,359,854 km (0.065 R)
• M9: 6,940,144 km (0.083 R)
• M10: 7,519,836 km (0.097 R)
• M11: 8,970,636 km (0.104 R)
• M12: 9,950,652 km (0.114 R)
• M13: 12,024,378 km (0.079 R)
• M14: 13,009,480 km (0.037 R)
• M15: 15,763,128 km (0.087 R)
• M16: 26,302,746 km (0.116 R)
• M17: 26,627,823 km (0.037 R)
• M18: 26,791,483 km (0.1 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 464.7

Radius: 7.8

Gravity: 7.64 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 8.55 AU - 12.43 AU

Year: 21937 Days

Day: 17.1 Hours

Environment

Temp: -236 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 71,107,130 km

• M1: 98,585 km (0.106 R)
• M2: 717,771 km (0.108 R)
• M3: 1,018,612 km (0.119 R)
• M4: 1,433,447 km (0.093 R)
• M5: 1,995,187 km (0.05 R)
• M6: 2,766,663 km (0.09 R)
• M7: 3,578,531 km (0.096 R)
• M8: 4,086,415 km (0.075 R)
• M9: 5,209,147 km (0.108 R)
• M10: 6,919,051 km (0.102 R)
• M11: 9,296,610 km (0.086 R)
• M12: 9,852,965 km (0.081 R)
• M13: 11,592,040 km (0.084 R)
• M14: 12,105,759 km (0.098 R)
• M15: 12,701,607 km (0.105 R)
• M16: 15,054,931 km (0.104 R)
• M17: 16,453,971 km (0.099 R)
• M18: 17,600,489 km (0.047 R)
• M19: 18,193,195 km (0.105 R)
• M20: 18,537,869 km (0.095 R)
• M21: 19,418,701 km (0.085 R)
• M22: 24,038,283 km (0.026 R)
• M23: 24,453,418 km (0.065 R)
• M24: 30,901,086 km (0.096 R)
• M25: 32,895,824 km (0.03 R)
• M26: 35,508,102 km (0.036 R)
• M27: 36,046,654 km (0.058 R)
• M28: 38,255,616 km (0.082 R)
• M29: 39,825,496 km (0.063 R)
• M30: 40,846,651 km (0.085 R)
• M31: 45,263,379 km (0.118 R)
• M32: 48,653,566 km (0.079 R)
• M33: 53,961,747 km (0.085 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 491 - 11,970 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit