🌌 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: 0.25

Radius: 0.57

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.43 AU - 0.67 AU

Year: 268 Days

Day: 27.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.2

Radius: 11

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.81 AU - 0.93 AU

Year: 532 Days

Day: 11.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 77,699,582 km

• M1: 137,032 km (0.072 R)
• M2: 505,790 km (0.032 R)
• M3: 875,297 km (0.093 R)
• M4: 1,255,276 km (0.102 R)
• M5: 1,691,802 km (0.101 R)
• M6: 2,080,308 km (0.065 R)
• M7: 2,476,892 km (0.112 R)
• M8: 3,373,731 km (0.101 R)
• M9: 3,855,287 km (0.104 R)
• M10: 4,306,175 km (0.115 R)
• M11: 4,776,062 km (0.105 R)
• M12: 5,635,202 km (0.102 R)
• M13: 6,006,654 km (0.106 R)
• M14: 6,513,940 km (0.097 R)
• M15: 7,092,136 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.7

Radius: 10.1

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.11 AU - 1.35 AU

Year: 895 Days

Day: 7.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 77,699,582 km

• M1: 125,662 km (0.108 R)
• M2: 498,011 km (0.096 R)
• M3: 835,953 km (0.106 R)
• M4: 1,270,086 km (0.061 R)
• M5: 1,603,390 km (0.095 R)
• M6: 2,030,641 km (0.061 R)
• M7: 2,353,623 km (0.094 R)
• M8: 3,249,116 km (0.113 R)
• M9: 3,615,481 km (0.03 R)
• M10: 3,939,510 km (0.095 R)
• M11: 4,342,078 km (0.036 R)
• M12: 4,900,228 km (0.115 R)
• M13: 5,401,231 km (0.106 R)
• M14: 5,972,994 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450

Radius: 11.2

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 3.51 AU - 3.59 AU

Year: 4388 Days

Day: 9.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,699,582 km

• M1: 139,575 km (0.109 R)
• M2: 999,015 km (0.061 R)
• M3: 1,421,030 km (0.026 R)
• M4: 2,218,985 km (0.091 R)
• M5: 5,332,267 km (0.051 R)
• M6: 6,439,590 km (0.116 R)
• M7: 7,861,817 km (0.088 R)
• M8: 10,070,480 km (0.103 R)
• M9: 12,249,822 km (0.064 R)
• M10: 12,993,921 km (0.049 R)
• M11: 15,945,936 km (0.114 R)
• M12: 16,946,447 km (0.039 R)
• M13: 19,318,620 km (0.04 R)
• M14: 20,390,938 km (0.114 R)
• M15: 21,502,450 km (0.115 R)
• M16: 23,000,373 km (0.117 R)
• M17: 23,350,283 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.2

Radius: 10

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.29 AU - 4.07 AU

Year: 4631 Days

Day: 14.2 Hours

Environment

Temp: -202 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,699,582 km

• M1: 135,536 km (0.1 R)
• M2: 532,868 km (0.11 R)
• M3: 1,841,101 km (0.099 R)
• M4: 2,157,052 km (0.055 R)
• M5: 2,743,027 km (0.113 R)
• M6: 3,064,812 km (0.087 R)
• M7: 4,140,121 km (0.034 R)
• M8: 5,394,948 km (0.101 R)
• M9: 5,874,708 km (0.043 R)
• M10: 6,663,388 km (0.068 R)
• M11: 8,525,134 km (0.036 R)
• M12: 10,580,010 km (0.056 R)
• M13: 11,792,202 km (0.046 R)
• M14: 12,216,162 km (0.115 R)
• M15: 13,144,716 km (0.077 R)
• M16: 13,498,365 km (0.11 R)
• M17: 13,858,448 km (0.063 R)
• M18: 16,974,122 km (0.077 R)
• M19: 17,575,805 km (0.092 R)
• M20: 18,949,712 km (0.095 R)
• M21: 19,794,491 km (0.082 R)
• M22: 21,211,781 km (0.091 R)
• M23: 23,573,932 km (0.12 R)
• M24: 26,425,117 km (0.042 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 268

Radius: 6.5

Gravity: 6.34 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 5.68 AU - 6.6 AU

Year: 9981 Days

Day: 24.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,699,582 km

• M1: 81,980 km (0.083 R)
• M2: 309,219 km (0.092 R)
• M3: 1,042,996 km (0.114 R)
• M4: 1,982,471 km (0.11 R)
• M5: 3,570,452 km (0.11 R)
• M6: 6,448,267 km (0.094 R)
• M7: 7,074,184 km (0.074 R)
• M8: 8,285,777 km (0.118 R)
• M9: 10,728,710 km (0.108 R)
• M10: 11,756,897 km (0.084 R)
• M11: 13,447,652 km (0.086 R)
• M12: 15,054,632 km (0.077 R)
• M13: 15,842,564 km (0.111 R)
• M14: 17,698,924 km (0.081 R)
• M15: 19,624,249 km (0.056 R)
• M16: 20,199,004 km (0.119 R)
• M17: 23,083,400 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 419.4

Radius: 4.4

Gravity: 21.66 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 8.28 AU - 8.36 AU

Year: 15743 Days

Day: 15.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 77,699,582 km

• M1: 54,902 km (0.073 R)
• M2: 263,591 km (0.085 R)
• M3: 673,190 km (0.117 R)
• M4: 1,662,481 km (0.077 R)
• M5: 2,142,092 km (0.114 R)
• M6: 3,244,179 km (0.104 R)
• M7: 4,491,078 km (0.094 R)
• M8: 8,575,848 km (0.107 R)
• M9: 8,816,102 km (0.089 R)
• M10: 14,412,259 km (0.04 R)
• M11: 14,615,413 km (0.038 R)
• M12: 22,443,570 km (0.075 R)
• M13: 24,690,231 km (0.093 R)
• M14: 31,860,906 km (0.111 R)
• M15: 35,422,681 km (0.043 R)
• M16: 36,040,969 km (0.058 R)
• M17: 36,666,438 km (0.111 R)
• M18: 38,847,126 km (0.102 R)
• M19: 49,812,052 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 411.8

Radius: 4.9

Gravity: 17.15 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6.89 AU - 10.49 AU

Year: 16805 Days

Day: 19.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,699,582 km

• M1: 68,516 km (0.087 R)
• M2: 221,106 km (0.08 R)
• M3: 1,275,023 km (0.071 R)
• M4: 1,439,730 km (0.083 R)
• M5: 2,325,948 km (0.095 R)
• M6: 2,977,746 km (0.09 R)
• M7: 5,477,077 km (0.106 R)
• M8: 5,693,695 km (0.094 R)
• M9: 7,201,043 km (0.108 R)
• M10: 11,972,168 km (0.098 R)
• M11: 14,208,207 km (0.108 R)
• M12: 14,964,724 km (0.112 R)
• M13: 15,965,982 km (0.086 R)
• M14: 17,706,554 km (0.085 R)
• M15: 17,942,469 km (0.092 R)
• M16: 23,585,152 km (0.099 R)
• M17: 24,938,264 km (0.107 R)
• M18: 25,734,275 km (0.07 R)
• M19: 35,763,017 km (0.089 R)
• M20: 39,788,845 km (0.107 R)
• M21: 46,154,833 km (0.054 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 994.9

Radius: 5.2

Gravity: 36.79 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 7.48 AU - 10.12 AU

Year: 17125 Days

Day: 17.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,699,582 km

• M1: 64,925 km (0.098 R)
• M2: 337,343 km (0.108 R)
• M3: 548,276 km (0.119 R)
• M4: 836,252 km (0.106 R)
• M5: 1,292,376 km (0.036 R)
• M6: 3,933,676 km (0.094 R)
• M7: 5,493,982 km (0.078 R)
• M8: 6,454,999 km (0.087 R)
• M9: 7,045,312 km (0.092 R)
• M10: 7,474,508 km (0.059 R)
• M11: 8,812,511 km (0.098 R)
• M12: 9,886,026 km (0.118 R)
• M13: 15,928,284 km (0.079 R)
• M14: 24,691,577 km (0.117 R)
• M15: 28,561,525 km (0.031 R)
• M16: 29,283,933 km (0.113 R)
• M17: 32,166,235 km (0.085 R)
• M18: 36,483,031 km (0.115 R)
• M19: 41,476,010 km (0.114 R)
• M20: 46,408,700 km (0.114 R)
• M21: 55,164,664 km (0.065 R)
• M22: 57,609,093 km (0.075 R)
• M23: 75,165,749 km (0.07 R)
• M24: 77,699,638 km (0.065 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: 476 - 14,469 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit