🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.45 AU - 0.71 AU

Year: 285 Days

Day: 26.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.8

Radius: 14

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.77 AU - 0.81 AU

Year: 453 Days

Day: 5.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 75,277,447 km

• M1: 175,329 km (0.04 R)
• M2: 720,763 km (0.117 R)
• M3: 1,248,693 km (0.118 R)
• M4: 2,923,292 km (0.085 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127.8

Radius: 12.1

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.61 AU - 0.99 AU

Year: 462 Days

Day: 5.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 75,277,447 km

• M1: 150,495 km (0.077 R)
• M2: 590,463 km (0.076 R)
• M3: 986,598 km (0.113 R)
• M4: 1,667,867 km (0.045 R)
• M5: 2,435,453 km (0.098 R)
• M6: 3,081,716 km (0.07 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 702.3

Radius: 13

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.79 AU - 0.93 AU

Year: 515 Days

Day: 6 Hours

Environment

Temp: -159 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 75,277,447 km

• M1: 161,715 km (0.119 R)
• M2: 856,897 km (0.069 R)
• M3: 1,929,813 km (0.114 R)
• M4: 2,334,325 km (0.079 R)
• M5: 2,839,368 km (0.117 R)
• M6: 3,259,588 km (0.093 R)
• M7: 4,072,652 km (0.032 R)
• M8: 4,686,752 km (0.111 R)
• M9: 5,446,709 km (0.118 R)
• M10: 5,865,583 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204

Radius: 11.9

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.86 AU - 1.08 AU

Year: 617 Days

Day: 11.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 75,277,447 km

• M1: 147,952 km (0.095 R)
• M2: 566,677 km (0.086 R)
• M3: 1,455,288 km (0.106 R)
• M4: 2,042,161 km (0.104 R)
• M5: 2,584,602 km (0.031 R)
• M6: 3,011,854 km (0.084 R)
• M7: 3,742,340 km (0.082 R)
• M8: 4,398,177 km (0.051 R)
• M9: 4,968,145 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 179.8

Radius: 10.3

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.73 AU - 1.21 AU

Year: 617 Days

Day: 5.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 75,277,447 km

• M1: 128,056 km (0.114 R)
• M2: 1,028,485 km (0.1 R)
• M3: 1,373,608 km (0.104 R)
• M4: 1,875,808 km (0.088 R)
• M5: 2,366,638 km (0.068 R)
• M6: 3,437,609 km (0.112 R)
• M7: 4,279,546 km (0.033 R)

Asteroid Belt

Center: 3.96 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 431.6

Radius: 7.9

Gravity: 6.92 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 6.64 AU - 7.26 AU

Year: 11830 Days

Day: 19.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 75,277,447 km

• M1: 98,286 km (0.11 R)
• M2: 789,428 km (0.082 R)
• M3: 1,137,841 km (0.036 R)
• M4: 2,383,992 km (0.04 R)
• M5: 2,777,434 km (0.042 R)
• M6: 3,167,735 km (0.117 R)
• M7: 5,935,445 km (0.045 R)
• M8: 6,849,638 km (0.1 R)
• M9: 8,414,880 km (0.113 R)
• M10: 9,906,670 km (0.113 R)
• M11: 11,731,615 km (0.103 R)
• M12: 18,088,178 km (0.071 R)
• M13: 19,370,830 km (0.091 R)
• M14: 22,032,176 km (0.116 R)
• M15: 22,626,528 km (0.084 R)
• M16: 23,231,353 km (0.111 R)
• M17: 26,705,165 km (0.088 R)
• M18: 28,166,736 km (0.106 R)
• M19: 28,967,683 km (0.057 R)
• M20: 30,301,498 km (0.043 R)
• M21: 31,890,825 km (0.07 R)
• M22: 34,208,096 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 770.3

Radius: 5

Gravity: 30.81 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 6.68 AU - 10.72 AU

Year: 16569 Days

Day: 18.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 75,277,447 km

• M1: 62,233 km (0.102 R)
• M2: 257,608 km (0.079 R)
• M3: 518,207 km (0.098 R)
• M4: 726,597 km (0.105 R)
• M5: 978,819 km (0.066 R)
• M6: 1,164,919 km (0.103 R)
• M7: 1,389,465 km (0.095 R)
• M8: 1,816,268 km (0.086 R)
• M9: 2,390,275 km (0.085 R)
• M10: 3,181,947 km (0.084 R)
• M11: 3,594,388 km (0.118 R)
• M12: 3,828,359 km (0.091 R)
• M13: 4,230,478 km (0.051 R)
• M14: 4,660,273 km (0.073 R)
• M15: 5,606,330 km (0.084 R)
• M16: 7,255,796 km (0.099 R)
• M17: 7,822,323 km (0.1 R)
• M18: 9,312,168 km (0.062 R)
• M19: 9,923,724 km (0.062 R)
• M20: 10,502,519 km (0.069 R)
• M21: 10,740,230 km (0.071 R)
• M22: 13,181,068 km (0.044 R)
• M23: 14,166,320 km (0.109 R)
• M24: 14,529,843 km (0.112 R)
• M25: 19,124,143 km (0.109 R)
• M26: 22,084,984 km (0.078 R)
• M27: 27,863,501 km (0.095 R)
• M28: 33,665,355 km (0.119 R)
• M29: 39,360,397 km (0.08 R)
• M30: 41,245,180 km (0.092 R)
• M31: 49,719,900 km (0.043 R)
• M32: 53,832,195 km (0.091 R)
• M33: 61,179,994 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 492.8

Radius: 5.9

Gravity: 14.16 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 9.93 AU - 11.85 AU

Year: 23204 Days

Day: 23.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 75,277,447 km

• M1: 73,303 km (0.105 R)
• M2: 312,211 km (0.04 R)
• M3: 581,038 km (0.09 R)
• M4: 841,787 km (0.103 R)
• M5: 1,061,846 km (0.118 R)
• M6: 2,537,629 km (0.054 R)
• M7: 3,325,411 km (0.053 R)
• M8: 4,331,606 km (0.072 R)
• M9: 5,487,399 km (0.1 R)
• M10: 6,263,663 km (0.111 R)
• M11: 6,655,908 km (0.106 R)
• M12: 7,393,426 km (0.096 R)
• M13: 8,975,274 km (0.117 R)
• M14: 10,049,237 km (0.071 R)
• M15: 10,708,814 km (0.09 R)
• M16: 13,139,480 km (0.066 R)
• M17: 16,809,714 km (0.069 R)
• M18: 18,433,749 km (0.117 R)
• M19: 20,253,308 km (0.045 R)
• M20: 24,994,064 km (0.115 R)
• M21: 25,319,589 km (0.08 R)
• M22: 26,649,963 km (0.067 R)
• M23: 27,677,850 km (0.109 R)
• M24: 30,547,885 km (0.065 R)
• M25: 36,313,537 km (0.114 R)
• M26: 37,011,261 km (0.111 R)
• M27: 40,188,122 km (0.093 R)
• M28: 42,918,881 km (0.077 R)
• M29: 45,286,866 km (0.033 R)
• M30: 46,258,055 km (0.109 R)
• M31: 50,281,640 km (0.093 R)
• M32: 63,538,704 km (0.088 R)
• M33: 63,942,618 km (0.077 R)
• M34: 71,943,710 km (0.061 R)
• M35: 73,265,108 km (0.11 R)
• M36: 73,486,962 km (0.051 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: 302 - 14,853 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit