🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.54 AU - 0.56 AU

Year: 259 Days

Day: 28.9 Hours

Environment

Temp: -117 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 740.5

Radius: 14.1

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.63 AU - 0.75 AU

Year: 364 Days

Day: 9 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,475,221 km

• M1: 175,478 km (0.081 R)
• M2: 809,923 km (0.119 R)
• M3: 1,316,760 km (0.047 R)
• M4: 2,295,430 km (0.114 R)
• M5: 2,986,871 km (0.075 R)
• M6: 3,573,295 km (0.058 R)
• M7: 4,014,908 km (0.094 R)
• M8: 4,632,896 km (0.063 R)
• M9: 5,084,532 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.6

Radius: 9

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.27 AU - 1.69 AU

Year: 1145 Days

Day: 5.4 Hours

Environment

Temp: -177 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 60,475,221 km

• M1: 112,049 km (0.084 R)
• M2: 460,013 km (0.068 R)
• M3: 755,768 km (0.086 R)
• M4: 1,093,860 km (0.107 R)
• M5: 1,402,630 km (0.119 R)
• M6: 1,828,984 km (0.088 R)
• M7: 2,319,964 km (0.084 R)
• M8: 2,735,696 km (0.084 R)
• M9: 3,353,835 km (0.04 R)
• M10: 4,571,412 km (0.103 R)
• M11: 5,298,308 km (0.059 R)
• M12: 6,198,438 km (0.114 R)
• M13: 6,726,818 km (0.072 R)
• M14: 7,197,154 km (0.037 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878

Radius: 13

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.68 AU - 2.5 AU

Year: 1921 Days

Day: 8.2 Hours

Environment

Temp: -195 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 60,475,221 km

• M1: 166,802 km (0.088 R)
• M2: 719,117 km (0.111 R)
• M3: 1,196,185 km (0.108 R)
• M4: 2,850,887 km (0.077 R)
• M5: 3,599,923 km (0.074 R)
• M6: 5,609,471 km (0.093 R)
• M7: 6,980,835 km (0.043 R)
• M8: 7,552,748 km (0.057 R)
• M9: 8,155,777 km (0.089 R)
• M10: 9,154,043 km (0.059 R)
• M11: 10,450,159 km (0.077 R)
• M12: 11,085,202 km (0.065 R)
• M13: 11,548,806 km (0.076 R)
• M14: 12,473,919 km (0.107 R)
• M15: 13,578,400 km (0.087 R)
• M16: 14,471,500 km (0.067 R)
• M17: 15,451,216 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.5

Radius: 9.9

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 2.89 AU - 3.01 AU

Year: 3222 Days

Day: 13.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 60,475,221 km

• M1: 123,119 km (0.109 R)
• M2: 514,018 km (0.111 R)
• M3: 886,517 km (0.102 R)
• M4: 1,606,980 km (0.096 R)
• M5: 1,932,655 km (0.106 R)
• M6: 2,611,380 km (0.071 R)
• M7: 3,425,193 km (0.062 R)
• M8: 3,847,358 km (0.098 R)
• M9: 4,535,807 km (0.092 R)
• M10: 4,920,274 km (0.088 R)
• M11: 5,685,617 km (0.083 R)
• M12: 6,085,043 km (0.084 R)
• M13: 8,611,751 km (0.077 R)
• M14: 9,266,840 km (0.114 R)
• M15: 9,988,351 km (0.072 R)
• M16: 11,212,959 km (0.112 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 596.6

Radius: 4.8

Gravity: 25.89 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 6.82 AU - 7.38 AU

Year: 12029 Days

Day: 19.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 60,475,221 km

• M1: 60,438 km (0.114 R)
• M2: 287,826 km (0.087 R)
• M3: 617,839 km (0.055 R)
• M4: 1,022,053 km (0.079 R)
• M5: 1,282,203 km (0.074 R)
• M6: 1,630,318 km (0.107 R)
• M7: 1,818,661 km (0.108 R)
• M8: 3,571,948 km (0.076 R)
• M9: 3,836,587 km (0.076 R)
• M10: 14,658,647 km (0.11 R)
• M11: 17,196,425 km (0.089 R)
• M12: 18,883,440 km (0.102 R)
• M13: 26,936,593 km (0.116 R)
• M14: 27,951,913 km (0.029 R)
• M15: 31,930,918 km (0.098 R)
• M16: 35,542,360 km (0.118 R)
• M17: 43,425,270 km (0.088 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 864.3

Radius: 5.6

Gravity: 27.56 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 7.17 AU - 11.19 AU

Year: 17685 Days

Day: 16.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 60,475,221 km

• M1: 70,012 km (0.077 R)
• M2: 397,332 km (0.119 R)
• M3: 674,986 km (0.093 R)
• M4: 1,730,847 km (0.114 R)
• M5: 2,154,060 km (0.101 R)
• M6: 4,769,031 km (0.05 R)
• M7: 6,560,016 km (0.086 R)
• M8: 6,965,576 km (0.118 R)
• M9: 9,303,940 km (0.092 R)
• M10: 13,147,110 km (0.04 R)
• M11: 14,232,293 km (0.116 R)
• M12: 15,691,021 km (0.115 R)
• M13: 17,586,726 km (0.109 R)
• M14: 17,931,250 km (0.066 R)
• M15: 18,192,747 km (0.101 R)
• M16: 26,473,886 km (0.059 R)
• M17: 29,147,350 km (0.11 R)
• M18: 29,751,426 km (0.12 R)
• M19: 33,552,409 km (0.12 R)
• M20: 34,483,656 km (0.036 R)
• M21: 38,815,561 km (0.099 R)
• M22: 40,138,006 km (0.108 R)
• M23: 42,254,517 km (0.026 R)
• M24: 47,037,909 km (0.052 R)
• M25: 48,036,026 km (0.101 R)
• M26: 48,371,724 km (0.099 R)
• M27: 50,419,718 km (0.111 R)
• M28: 55,237,219 km (0.116 R)
• M29: 58,422,905 km (0.031 R)
• M30: 62,324,866 km (0.058 R)
• M31: 65,362,750 km (0.078 R)
• M32: 69,136,806 km (0.115 R)
• M33: 72,611,366 km (0.06 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 722.7

Radius: 3.3

Gravity: 66.36 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 10.14 AU - 10.22 AU

Year: 20652 Days

Day: 23.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 60,475,221 km

• M1: 41,139 km (0.034 R)
• M2: 152,141 km (0.077 R)
• M3: 673,789 km (0.062 R)
• M4: 1,003,353 km (0.091 R)
• M5: 1,232,836 km (0.094 R)
• M6: 3,122,407 km (0.107 R)
• M7: 3,232,660 km (0.048 R)
• M8: 3,403,202 km (0.095 R)
• M9: 4,589,812 km (0.088 R)
• M10: 5,065,085 km (0.065 R)
• M11: 5,334,211 km (0.072 R)
• M12: 5,900,888 km (0.096 R)
• M13: 7,200,445 km (0.056 R)
• M14: 7,789,860 km (0.093 R)
• M15: 8,200,357 km (0.112 R)
• M16: 11,034,189 km (0.116 R)
• M17: 12,017,197 km (0.088 R)
• M18: 12,288,867 km (0.107 R)
• M19: 15,393,172 km (0.116 R)
• M20: 15,794,394 km (0.109 R)
• M21: 16,701,405 km (0.12 R)
• M22: 17,468,992 km (0.026 R)
• M23: 19,443,534 km (0.114 R)
• M24: 21,962,912 km (0.114 R)
• M25: 24,257,594 km (0.116 R)
• M26: 25,798,302 km (0.09 R)
• M27: 28,830,202 km (0.106 R)
• M28: 30,682,972 km (0.111 R)
• M29: 31,445,772 km (0.091 R)
• M30: 32,482,485 km (0.113 R)
• M31: 35,589,483 km (0.111 R)
• M32: 41,918,371 km (0.059 R)
• M33: 42,229,833 km (0.106 R)
• M34: 45,592,644 km (0.102 R)
• M35: 52,664,135 km (0.099 R)
• M36: 53,026,611 km (0.049 R)
• M37: 55,423,618 km (0.099 R)
• M38: 62,031,804 km (0.09 R)
• M39: 65,943,639 km (0.077 R)
• M40: 69,362,848 km (0.046 R)
• M41: 73,574,178 km (0.073 R)
• M42: 76,088,619 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 252.9

Radius: 5.9

Gravity: 7.27 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 9.75 AU - 12.33 AU

Year: 23323 Days

Day: 22.8 Hours

Environment

Temp: -237 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 60,475,221 km

• M1: 91,554 km (0.108 R)
• M2: 334,950 km (0.055 R)
• M3: 789,278 km (0.091 R)
• M4: 1,159,683 km (0.092 R)
• M5: 1,442,423 km (0.113 R)
• M6: 2,344,199 km (0.089 R)
• M7: 3,233,259 km (0.087 R)
• M8: 5,432,048 km (0.107 R)
• M9: 5,876,354 km (0.072 R)
• M10: 8,038,642 km (0.12 R)
• M11: 8,714,226 km (0.051 R)
• M12: 9,637,394 km (0.075 R)
• M13: 11,142,049 km (0.108 R)
• M14: 11,377,516 km (0.106 R)
• M15: 13,448,998 km (0.119 R)
• M16: 17,281,247 km (0.11 R)
• M17: 20,526,025 km (0.08 R)
• M18: 24,253,106 km (0.118 R)
• M19: 25,453,629 km (0.117 R)
• M20: 27,541,566 km (0.073 R)
• M21: 27,756,389 km (0.087 R)
• M22: 34,113,401 km (0.056 R)
• M23: 35,873,719 km (0.093 R)
• M24: 36,258,784 km (0.11 R)
• M25: 43,521,761 km (0.066 R)
• M26: 44,548,152 km (0.105 R)
• M27: 44,844,355 km (0.102 R)
• M28: 48,814,982 km (0.059 R)
• M29: 51,860,346 km (0.113 R)
• M30: 54,860,232 km (0.101 R)
• M31: 57,797,736 km (0.071 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 449 - 16,700 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit