🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.53 AU - 0.77 AU

Year: 344 Days

Day: 20.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.55 AU - 0.75 AU

Year: 344 Days

Day: 40.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 86,154,113 km

• M1: 29,471 km (0.086 R)
• M2: 195,973 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 551.7

Radius: 10.5

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.67 AU - 0.81 AU

Year: 418 Days

Day: 5.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 86,154,113 km

• M1: 130,599 km (0.119 R)
• M2: 460,761 km (0.062 R)
• M3: 837,598 km (0.072 R)
• M4: 1,950,158 km (0.074 R)
• M5: 2,322,507 km (0.112 R)
• M6: 3,567,460 km (0.044 R)
• M7: 4,262,343 km (0.045 R)
• M8: 4,649,352 km (0.112 R)
• M9: 4,999,860 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.8

Radius: 11

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.93 AU - 1.09 AU

Year: 666 Days

Day: 13.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 81.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 86,154,113 km

• M1: 138,827 km (0.11 R)
• M2: 516,113 km (0.049 R)
• M3: 884,273 km (0.027 R)
• M4: 1,255,725 km (0.079 R)
• M5: 1,600,099 km (0.106 R)
• M6: 1,952,851 km (0.112 R)
• M7: 2,799,275 km (0.047 R)
• M8: 3,434,169 km (0.105 R)
• M9: 3,990,972 km (0.05 R)
• M10: 5,021,701 km (0.099 R)
• M11: 5,640,887 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663

Radius: 13.1

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.55 AU - 4.49 AU

Year: 5287 Days

Day: 5.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 86,154,113 km

• M1: 163,361 km (0.041 R)
• M2: 674,238 km (0.069 R)
• M3: 1,154,596 km (0.075 R)
• M4: 1,638,097 km (0.114 R)
• M5: 2,464,176 km (0.113 R)
• M6: 2,935,858 km (0.058 R)
• M7: 3,880,868 km (0.068 R)
• M8: 5,492,336 km (0.08 R)
• M9: 6,692,111 km (0.114 R)
• M10: 8,134,384 km (0.093 R)
• M11: 9,069,670 km (0.047 R)
• M12: 10,560,862 km (0.071 R)
• M13: 13,808,183 km (0.09 R)
• M14: 14,297,517 km (0.117 R)
• M15: 14,911,168 km (0.061 R)
• M16: 15,542,321 km (0.102 R)
• M17: 18,770,494 km (0.102 R)
• M18: 19,642,500 km (0.11 R)
• M19: 20,331,547 km (0.097 R)
• M20: 21,251,425 km (0.067 R)
• M21: 21,831,116 km (0.104 R)
• M22: 23,174,206 km (0.065 R)
• M23: 24,889,645 km (0.107 R)
• M24: 25,452,731 km (0.091 R)
• M25: 28,747,475 km (0.118 R)
• M26: 29,906,260 km (0.108 R)
• M27: 30,818,508 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.8

Radius: 14.9

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 3.94 AU - 4.48 AU

Year: 5667 Days

Day: 10.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 86,154,113 km

• M1: 185,352 km (0.117 R)
• M2: 748,588 km (0.12 R)
• M3: 1,282,951 km (0.05 R)
• M4: 1,986,510 km (0.08 R)
• M5: 2,467,766 km (0.096 R)
• M6: 2,975,053 km (0.071 R)
• M7: 4,116,036 km (0.054 R)
• M8: 5,241,161 km (0.072 R)
• M9: 5,723,166 km (0.077 R)
• M10: 7,220,940 km (0.106 R)
• M11: 9,541,801 km (0.104 R)
• M12: 10,182,379 km (0.098 R)
• M13: 11,153,269 km (0.052 R)
• M14: 14,232,442 km (0.056 R)
• M15: 15,230,410 km (0.107 R)
• M16: 15,719,295 km (0.086 R)
• M17: 19,062,808 km (0.059 R)
• M18: 20,145,448 km (0.111 R)
• M19: 20,867,557 km (0.116 R)
• M20: 23,640,353 km (0.069 R)
• M21: 24,889,944 km (0.055 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 786.9

Radius: 12.7

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 4.39 AU - 4.45 AU

Year: 6096 Days

Day: 6 Hours

Environment

Temp: -219 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 86,154,113 km

• M1: 173,085 km (0.07 R)
• M2: 1,061,846 km (0.115 R)
• M3: 1,685,370 km (0.071 R)
• M4: 2,273,140 km (0.115 R)
• M5: 2,916,410 km (0.109 R)
• M6: 3,454,215 km (0.095 R)
• M7: 4,257,406 km (0.114 R)
• M8: 5,152,450 km (0.066 R)
• M9: 5,816,216 km (0.111 R)
• M10: 6,234,790 km (0.094 R)
• M11: 7,651,033 km (0.093 R)
• M12: 11,606,850 km (0.063 R)
• M13: 13,018,904 km (0.04 R)
• M14: 14,367,828 km (0.119 R)
• M15: 20,408,590 km (0.112 R)
• M16: 29,154,680 km (0.119 R)
• M17: 30,194,685 km (0.1 R)
• M18: 33,054,996 km (0.094 R)
• M19: 35,448,562 km (0.062 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.6

Radius: 14.9

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 4.67 AU - 5.41 AU

Year: 7423 Days

Day: 10.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 86,154,113 km

• M1: 185,352 km (0.105 R)
• M2: 680,970 km (0.12 R)
• M3: 1,550,283 km (0.119 R)
• M4: 2,024,358 km (0.094 R)
• M5: 2,579,366 km (0.064 R)
• M6: 3,605,159 km (0.08 R)
• M7: 5,319,700 km (0.1 R)
• M8: 7,123,551 km (0.091 R)
• M9: 8,385,709 km (0.086 R)
• M10: 9,306,932 km (0.101 R)
• M11: 10,155,900 km (0.103 R)
• M12: 12,320,881 km (0.079 R)
• M13: 12,853,000 km (0.088 R)
• M14: 16,312,301 km (0.097 R)
• M15: 18,221,918 km (0.064 R)
• M16: 18,843,946 km (0.12 R)
• M17: 20,571,802 km (0.068 R)
• M18: 21,550,770 km (0.062 R)
• M19: 23,117,359 km (0.105 R)
• M20: 26,740,919 km (0.032 R)
• M21: 28,826,911 km (0.083 R)
• M22: 33,218,656 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 667.9

Radius: 6.6

Gravity: 15.33 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 7.37 AU - 11.59 AU

Year: 19148 Days

Day: 17.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 86,154,113 km

• M1: 82,728 km (0.119 R)
• M2: 760,107 km (0.086 R)
• M3: 1,555,369 km (0.092 R)
• M4: 1,923,529 km (0.102 R)
• M5: 2,785,363 km (0.107 R)
• M6: 3,700,902 km (0.088 R)
• M7: 4,628,409 km (0.108 R)
• M8: 5,544,845 km (0.057 R)
• M9: 8,854,249 km (0.09 R)
• M10: 10,435,499 km (0.112 R)
• M11: 14,218,978 km (0.043 R)
• M12: 15,194,357 km (0.029 R)
• M13: 15,659,307 km (0.04 R)
• M14: 16,699,311 km (0.033 R)
• M15: 17,614,551 km (0.077 R)
• M16: 18,127,672 km (0.115 R)
• M17: 20,187,335 km (0.049 R)
• M18: 23,305,254 km (0.103 R)
• M19: 25,408,899 km (0.087 R)
• M20: 27,635,813 km (0.086 R)
• M21: 33,504,687 km (0.044 R)
• M22: 33,765,885 km (0.105 R)
• M23: 34,424,564 km (0.029 R)
• M24: 37,988,734 km (0.118 R)
• M25: 41,942,456 km (0.113 R)
• M26: 49,972,421 km (0.078 R)
• M27: 55,432,893 km (0.087 R)
• M28: 59,540,551 km (0.063 R)
• M29: 59,923,671 km (0.038 R)
• M30: 61,668,431 km (0.116 R)
• M31: 64,853,370 km (0.079 R)
• M32: 70,902,360 km (0.057 R)
• M33: 72,853,415 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 756.6

Radius: 4.8

Gravity: 32.84 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 8.73 AU - 12.65 AU

Year: 22929 Days

Day: 19.9 Hours

Environment

Temp: -237 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 86,154,113 km

• M1: 62,532 km (0.111 R)
• M2: 253,269 km (0.074 R)
• M3: 439,519 km (0.042 R)
• M4: 1,040,304 km (0.073 R)
• M5: 1,437,486 km (0.1 R)
• M6: 1,830,779 km (0.067 R)
• M7: 2,361,103 km (0.101 R)
• M8: 2,674,511 km (0.111 R)
• M9: 2,987,918 km (0.098 R)
• M10: 3,751,017 km (0.104 R)
• M11: 5,821,452 km (0.067 R)
• M12: 8,716,021 km (0.082 R)
• M13: 9,055,458 km (0.111 R)
• M14: 12,235,161 km (0.115 R)
• M15: 13,022,794 km (0.097 R)
• M16: 13,919,932 km (0.093 R)
• M17: 14,227,954 km (0.045 R)
• M18: 19,030,495 km (0.083 R)
• M19: 25,837,946 km (0.086 R)
• M20: 27,011,242 km (0.067 R)
• M21: 29,463,749 km (0.118 R)
• M22: 30,873,859 km (0.042 R)
• M23: 32,194,210 km (0.064 R)
• M24: 49,109,690 km (0.098 R)
• M25: 54,060,033 km (0.113 R)
• M26: 65,581,762 km (0.113 R)
• M27: 66,882,066 km (0.082 R)
• M28: 80,349,166 km (0.115 R)
• M29: 85,896,105 km (0.096 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 539 - 13,357 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit