🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.61 AU - 0.73 AU

Year: 360 Days

Day: 37.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 44.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,604,287 km

• M1: 32,164 km (0.082 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.9

Radius: 9.6

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.6 AU - 0.9 AU

Year: 426 Days

Day: 15 Hours

Environment

Temp: -136 °C

Axial Tilt: 52.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,604,287 km

• M1: 119,977 km (0.072 R)
• M2: 471,532 km (0.097 R)
• M3: 1,129,614 km (0.102 R)
• M4: 1,979,180 km (0.071 R)
• M5: 2,657,307 km (0.106 R)
• M6: 3,074,087 km (0.106 R)
• M7: 3,382,557 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.2

Radius: 14

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.74 AU - 1.08 AU

Year: 569 Days

Day: 10 Hours

Environment

Temp: -144 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,604,287 km

• M1: 174,880 km (0.09 R)
• M2: 781,499 km (0.104 R)
• M3: 1,279,810 km (0.109 R)
• M4: 1,833,023 km (0.083 R)
• M5: 2,396,707 km (0.06 R)
• M6: 3,207,977 km (0.087 R)
• M7: 3,728,428 km (0.101 R)
• M8: 4,291,514 km (0.092 R)
• M9: 4,732,229 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.8

Radius: 14.2

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.87 AU - 1.14 AU

Year: 656 Days

Day: 6.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,604,287 km

• M1: 176,675 km (0.112 R)
• M2: 804,837 km (0.048 R)
• M3: 1,888,972 km (0.063 R)
• M4: 2,628,883 km (0.116 R)
• M5: 4,660,722 km (0.028 R)
• M6: 5,679,334 km (0.027 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.2

Radius: 12.1

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 1.02 AU - 1.1 AU

Year: 716 Days

Day: 6.6 Hours

Environment

Temp: -152 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,604,287 km

• M1: 150,495 km (0.078 R)
• M2: 624,422 km (0.117 R)
• M3: 1,354,908 km (0.111 R)
• M4: 1,795,324 km (0.116 R)
• M5: 2,412,415 km (0.096 R)
• M6: 3,254,502 km (0.085 R)
• M7: 6,377,058 km (0.104 R)
• M8: 7,105,300 km (0.113 R)
• M9: 7,749,918 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 626.9

Radius: 11.2

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 3.37 AU - 3.91 AU

Year: 4556 Days

Day: 10.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 46,604,287 km

• M1: 142,268 km (0.032 R)
• M2: 760,705 km (0.056 R)
• M3: 2,258,629 km (0.035 R)
• M4: 3,305,664 km (0.089 R)
• M5: 3,971,823 km (0.059 R)
• M6: 4,577,096 km (0.105 R)
• M7: 5,005,395 km (0.101 R)
• M8: 5,884,881 km (0.037 R)
• M9: 7,529,710 km (0.056 R)
• M10: 8,164,902 km (0.104 R)
• M11: 10,244,163 km (0.088 R)
• M12: 11,429,277 km (0.066 R)
• M13: 12,221,099 km (0.105 R)
• M14: 14,600,752 km (0.107 R)
• M15: 15,309,996 km (0.057 R)
• M16: 21,416,880 km (0.098 R)
• M17: 22,981,823 km (0.096 R)
• M18: 23,421,641 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.2

Radius: 8

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 3.59 AU - 3.75 AU

Year: 4612 Days

Day: 14.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 46,604,287 km

• M1: 99,483 km (0.059 R)
• M2: 360,531 km (0.044 R)
• M3: 645,066 km (0.062 R)
• M4: 992,582 km (0.04 R)
• M5: 1,298,061 km (0.059 R)
• M6: 2,116,959 km (0.065 R)
• M7: 2,899,805 km (0.119 R)
• M8: 4,256,807 km (0.077 R)
• M9: 4,799,399 km (0.115 R)
• M10: 5,685,018 km (0.119 R)
• M11: 6,373,019 km (0.107 R)
• M12: 7,948,135 km (0.109 R)
• M13: 8,919,175 km (0.051 R)
• M14: 10,088,581 km (0.086 R)
• M15: 12,871,401 km (0.086 R)
• M16: 13,503,302 km (0.113 R)
• M17: 13,801,900 km (0.059 R)
• M18: 14,829,188 km (0.088 R)
• M19: 15,147,084 km (0.089 R)
• M20: 16,351,795 km (0.05 R)
• M21: 16,805,376 km (0.034 R)

Planet 8 - Ice Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 401.4

Radius: 4.3

Gravity: 21.71 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 5.08 AU - 6.72 AU

Year: 9401 Days

Day: 24.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 46,604,287 km

• M1: 111,899 km (0.114 R)
• M2: 249,080 km (0.098 R)
• M3: 389,553 km (0.093 R)
• M4: 690,843 km (0.042 R)
• M5: 1,112,260 km (0.108 R)
• M6: 1,485,806 km (0.098 R)
• M7: 1,673,551 km (0.079 R)
• M8: 2,369,032 km (0.052 R)
• M9: 2,901,451 km (0.113 R)
• M10: 3,943,400 km (0.084 R)
• M11: 4,304,679 km (0.113 R)
• M12: 5,004,049 km (0.094 R)
• M13: 5,906,872 km (0.029 R)
• M14: 6,140,095 km (0.093 R)
• M15: 6,344,894 km (0.083 R)
• M16: 8,735,768 km (0.093 R)
• M17: 9,259,211 km (0.056 R)
• M18: 10,756,835 km (0.1 R)
• M19: 12,571,906 km (0.097 R)
• M20: 16,076,535 km (0.113 R)
• M21: 17,262,996 km (0.111 R)
• M22: 17,602,583 km (0.112 R)
• M23: 18,365,532 km (0.118 R)
• M24: 19,514,145 km (0.083 R)
• M25: 21,170,642 km (0.071 R)
• M26: 22,593,766 km (0.086 R)
• M27: 25,366,413 km (0.114 R)
• M28: 28,451,570 km (0.086 R)
• M29: 30,575,710 km (0.116 R)
• M30: 31,474,345 km (0.119 R)
• M31: 33,639,325 km (0.045 R)
• M32: 34,812,173 km (0.11 R)
• M33: 35,791,739 km (0.051 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 422.9

Radius: 8

Gravity: 6.61 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 6.23 AU - 7.81 AU

Year: 12202 Days

Day: 21.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 46,604,287 km

• M1: 99,782 km (0.108 R)
• M2: 384,467 km (0.088 R)
• M3: 817,403 km (0.11 R)
• M4: 1,245,402 km (0.1 R)
• M5: 1,566,888 km (0.069 R)
• M6: 1,895,255 km (0.074 R)
• M7: 3,694,768 km (0.087 R)
• M8: 4,115,288 km (0.056 R)
• M9: 4,775,314 km (0.088 R)
• M10: 5,372,209 km (0.095 R)
• M11: 6,600,856 km (0.078 R)
• M12: 7,062,216 km (0.086 R)
• M13: 8,310,311 km (0.102 R)
• M14: 9,079,544 km (0.064 R)
• M15: 9,602,089 km (0.098 R)
• M16: 9,994,634 km (0.096 R)
• M17: 10,346,787 km (0.072 R)
• M18: 10,811,737 km (0.063 R)
• M19: 13,408,756 km (0.106 R)
• M20: 13,837,354 km (0.073 R)
• M21: 15,982,438 km (0.115 R)
• M22: 16,885,112 km (0.076 R)
• M23: 17,169,647 km (0.103 R)
• M24: 23,909,928 km (0.097 R)
• M25: 24,178,756 km (0.12 R)
• M26: 26,979,677 km (0.09 R)
• M27: 32,553,544 km (0.083 R)
• M28: 33,105,410 km (0.085 R)
• M29: 37,869,055 km (0.11 R)
• M30: 39,096,656 km (0.117 R)
• M31: 41,760,395 km (0.11 R)
• M32: 43,202,967 km (0.044 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 214 - 17,055 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit