🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.47 AU - 0.57 AU

Year: 246 Days

Day: 39.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 5.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,391,922 km

• M1: 19,597 km (0.06 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 778.5

Radius: 11.7

Gravity: 5.69 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.7 AU - 0.96 AU

Year: 496 Days

Day: 5.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 37,391,922 km

• M1: 145,858 km (0.089 R)
• M2: 617,839 km (0.093 R)
• M3: 1,101,639 km (0.073 R)
• M4: 1,468,303 km (0.09 R)
• M5: 1,968,558 km (0.1 R)
• M6: 3,103,707 km (0.063 R)
• M7: 3,503,283 km (0.073 R)
• M8: 4,978,617 km (0.106 R)
• M9: 6,595,770 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 979.7

Radius: 13.9

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.2 AU - 1.64 AU

Year: 1110 Days

Day: 9.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,391,922 km

• M1: 172,935 km (0.06 R)
• M2: 686,804 km (0.078 R)
• M3: 1,150,856 km (0.081 R)
• M4: 1,682,976 km (0.072 R)
• M5: 2,153,162 km (0.115 R)
• M6: 2,829,793 km (0.103 R)
• M7: 3,504,480 km (0.066 R)
• M8: 4,178,717 km (0.063 R)
• M9: 4,821,689 km (0.085 R)
• M10: 5,788,540 km (0.099 R)
• M11: 6,637,658 km (0.104 R)
• M12: 7,700,550 km (0.097 R)
• M13: 8,329,011 km (0.092 R)
• M14: 9,534,471 km (0.102 R)
• M15: 10,163,231 km (0.063 R)
• M16: 11,330,244 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 859.1

Radius: 8.6

Gravity: 11.62 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.55 AU - 2.27 AU

Year: 1732 Days

Day: 9.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 154.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,391,922 km

• M1: 113,395 km (0.116 R)
• M2: 393,891 km (0.088 R)
• M3: 857,495 km (0.081 R)
• M4: 1,419,983 km (0.079 R)
• M5: 1,805,796 km (0.068 R)
• M6: 2,223,024 km (0.096 R)
• M7: 2,923,442 km (0.114 R)
• M8: 3,333,489 km (0.084 R)
• M9: 3,799,487 km (0.116 R)
• M10: 7,137,314 km (0.03 R)
• M11: 8,183,004 km (0.086 R)
• M12: 9,528,188 km (0.066 R)
• M13: 12,088,555 km (0.079 R)
• M14: 12,447,889 km (0.098 R)
• M15: 13,062,886 km (0.03 R)
• M16: 14,846,990 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.9

Radius: 13.4

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.57 AU - 2.51 AU

Year: 1911 Days

Day: 14.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 37,391,922 km

• M1: 166,652 km (0.064 R)
• M2: 774,767 km (0.082 R)
• M3: 1,498,073 km (0.103 R)
• M4: 1,922,033 km (0.052 R)
• M5: 2,363,048 km (0.057 R)
• M6: 2,887,089 km (0.053 R)
• M7: 3,695,367 km (0.088 R)
• M8: 4,446,647 km (0.086 R)
• M9: 5,786,146 km (0.081 R)
• M10: 6,228,956 km (0.032 R)
• M11: 6,854,724 km (0.104 R)
• M12: 7,436,361 km (0.115 R)
• M13: 8,293,706 km (0.096 R)
• M14: 9,019,704 km (0.089 R)
• M15: 10,064,795 km (0.078 R)
• M16: 11,226,722 km (0.076 R)
• M17: 12,679,616 km (0.076 R)
• M18: 13,387,663 km (0.103 R)
• M19: 15,112,078 km (0.098 R)
• M20: 15,956,109 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 762.2

Radius: 9

Gravity: 9.41 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 3.11 AU - 3.55 AU

Year: 3986 Days

Day: 8 Hours

Environment

Temp: -196 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 37,391,922 km

• M1: 111,899 km (0.118 R)
• M2: 413,040 km (0.074 R)
• M3: 719,117 km (0.062 R)
• M4: 1,775,727 km (0.067 R)
• M5: 2,347,789 km (0.109 R)
• M6: 2,702,785 km (0.074 R)
• M7: 3,521,534 km (0.095 R)
• M8: 4,100,627 km (0.068 R)
• M9: 4,867,616 km (0.037 R)
• M10: 5,205,258 km (0.065 R)
• M11: 5,503,257 km (0.099 R)
• M12: 5,870,071 km (0.107 R)
• M13: 6,163,283 km (0.095 R)
• M14: 6,590,235 km (0.105 R)
• M15: 7,168,132 km (0.096 R)
• M16: 9,700,973 km (0.088 R)
• M17: 10,491,598 km (0.066 R)
• M18: 10,793,486 km (0.056 R)
• M19: 11,642,155 km (0.104 R)
• M20: 13,624,476 km (0.075 R)
• M21: 14,244,859 km (0.109 R)
• M22: 15,542,022 km (0.11 R)
• M23: 18,745,660 km (0.047 R)
• M24: 20,036,241 km (0.029 R)
• M25: 21,316,201 km (0.086 R)
• M26: 23,520,376 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.2

Radius: 14.6

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 3.35 AU - 3.93 AU

Year: 4556 Days

Day: 8.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,391,922 km

• M1: 181,612 km (0.088 R)
• M2: 1,033,123 km (0.104 R)
• M3: 2,319,066 km (0.054 R)
• M4: 3,512,708 km (0.096 R)
• M5: 4,088,809 km (0.113 R)
• M6: 4,590,261 km (0.102 R)
• M7: 5,206,754 km (0.1 R)
• M8: 6,873,125 km (0.098 R)
• M9: 9,871,365 km (0.095 R)
• M10: 12,093,342 km (0.084 R)
• M11: 14,283,754 km (0.107 R)
• M12: 16,509,322 km (0.104 R)
• M13: 18,543,254 km (0.105 R)
• M14: 20,487,428 km (0.053 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 152.1

Radius: 3.5

Gravity: 12.42 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 6.51 AU - 9.33 AU

Year: 14622 Days

Day: 15.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 37,391,922 km

• M1: 43,533 km (0.095 R)
• M2: 164,558 km (0.092 R)
• M3: 299,645 km (0.106 R)
• M4: 992,582 km (0.064 R)
• M5: 1,199,775 km (0.084 R)
• M6: 1,830,031 km (0.032 R)
• M7: 1,966,165 km (0.117 R)
• M8: 2,617,664 km (0.092 R)
• M9: 2,910,576 km (0.108 R)
• M10: 3,246,723 km (0.049 R)
• M11: 5,447,906 km (0.107 R)
• M12: 5,730,646 km (0.092 R)
• M13: 6,887,636 km (0.109 R)
• M14: 7,069,995 km (0.043 R)
• M15: 8,901,672 km (0.108 R)
• M16: 11,890,936 km (0.081 R)
• M17: 12,581,480 km (0.042 R)
• M18: 12,908,950 km (0.073 R)
• M19: 13,695,386 km (0.099 R)
• M20: 17,361,431 km (0.102 R)
• M21: 18,387,972 km (0.109 R)
• M22: 18,738,928 km (0.088 R)
• M23: 19,237,688 km (0.057 R)
• M24: 20,939,064 km (0.105 R)
• M25: 22,738,128 km (0.087 R)
• M26: 26,284,346 km (0.117 R)
• M27: 27,270,495 km (0.085 R)
• M28: 27,635,215 km (0.046 R)
• M29: 27,818,622 km (0.103 R)
• M30: 31,662,389 km (0.087 R)
• M31: 34,447,602 km (0.077 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 501 - 10,623 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit