🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.99

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.52 AU - 0.54 AU

Year: 163 Days

Day: 39.4 Hours

Environment

Temp: 104 °C

Axial Tilt: 19.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.46 AU - 0.62 AU

Year: 167 Days

Day: 16.6 Hours

Environment

Temp: 93 °C

Axial Tilt: 19.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.55 AU - 0.59 AU

Year: 181 Days

Day: 44.3 Hours

Environment

Temp: 155 °C

Axial Tilt: 43.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.51 AU - 0.79 AU

Year: 221 Days

Day: 19.9 Hours

Environment

Temp: 15 °C

Axial Tilt: 44.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 36,669,952 km

• M1: 123,119 km (0.088 R)

Planet 5 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.63 AU - 0.99 AU

Year: 307 Days

Day: 22.8 Hours

Environment

Temp: -0 °C

Axial Tilt: 2.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 36,669,952 km

• M1: 86,617 km (0.098 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.86 AU - 1.38 AU

Year: 500 Days

Day: 17.2 Hours

Environment

Temp: -60 °C

Axial Tilt: 131.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,669,952 km

• M1: 204,799 km (0.094 R)

Planet 7 - Terrestrial

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.17 AU - 1.81 AU

Year: 767 Days

Day: 28.6 Hours

Environment

Temp: -90 °C

Axial Tilt: 26.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,669,952 km

• M1: 480,209 km (0.109 R)

Asteroid Belt

Center: 4.71 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 7.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.8

Radius: 11.9

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 7.65 AU - 8.21 AU

Year: 9418 Days

Day: 13.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 36,669,952 km

• M1: 160,519 km (0.11 R)
• M2: 247,884 km (0.117 R)
• M3: 369,357 km (0.08 R)
• M4: 473,926 km (0.118 R)
• M5: 1,133,503 km (0.083 R)
• M6: 1,248,095 km (0.082 R)
• M7: 1,454,091 km (0.057 R)
• M8: 1,860,998 km (0.072 R)
• M9: 2,057,868 km (0.117 R)
• M10: 2,303,209 km (0.118 R)
• M11: 2,450,862 km (0.114 R)
• M12: 2,623,498 km (0.086 R)
• M13: 2,822,613 km (0.107 R)
• M14: 3,450,026 km (0.105 R)
• M15: 3,571,051 km (0.051 R)
• M16: 3,967,635 km (0.104 R)
• M17: 4,069,062 km (0.103 R)
• M18: 4,378,580 km (0.108 R)
• M19: 4,536,256 km (0.098 R)
• M20: 4,803,139 km (0.114 R)
• M21: 4,965,901 km (0.107 R)
• M22: 5,075,407 km (0.041 R)
• M23: 5,692,049 km (0.111 R)
• M24: 6,184,974 km (0.114 R)
• M25: 6,481,328 km (0.103 R)
• M26: 6,721,732 km (0.113 R)
• M27: 6,965,277 km (0.079 R)
• M28: 7,057,280 km (0.072 R)
• M29: 7,242,631 km (0.038 R)
• M30: 8,032,209 km (0.077 R)
• M31: 8,161,162 km (0.061 R)
• M32: 8,519,150 km (0.104 R)
• M33: 9,284,493 km (0.097 R)
• M34: 10,280,665 km (0.098 R)
• M35: 10,844,798 km (0.119 R)
• M36: 11,023,119 km (0.115 R)
• M37: 11,746,425 km (0.114 R)
• M38: 11,892,881 km (0.078 R)
• M39: 12,076,887 km (0.12 R)
• M40: 12,261,939 km (0.09 R)
• M41: 12,747,085 km (0.065 R)
• M42: 13,276,811 km (0.11 R)
• M43: 13,505,995 km (0.084 R)
• M44: 14,475,090 km (0.067 R)
• M45: 14,553,629 km (0.102 R)
• M46: 14,908,625 km (0.049 R)
• M47: 15,107,141 km (0.12 R)
• M48: 15,226,670 km (0.07 R)
• M49: 15,466,625 km (0.113 R)
• M50: 16,561,980 km (0.043 R)
• M51: 16,685,249 km (0.109 R)
• M52: 17,056,850 km (0.109 R)
• M53: 17,682,319 km (0.078 R)
• M54: 20,302,525 km (0.082 R)
• M55: 20,654,978 km (0.107 R)
• M56: 22,311,774 km (0.027 R)
• M57: 23,317,072 km (0.069 R)
• M58: 23,455,301 km (0.119 R)
• M59: 24,011,057 km (0.101 R)
• M60: 24,103,957 km (0.115 R)
• M61: 24,524,177 km (0.105 R)
• M62: 25,041,038 km (0.066 R)
• M63: 25,561,339 km (0.05 R)
• M64: 25,989,788 km (0.092 R)
• M65: 26,468,650 km (0.074 R)
• M66: 27,047,145 km (0.083 R)
• M67: 27,143,935 km (0.073 R)
• M68: 29,054,898 km (0.096 R)
• M69: 30,352,810 km (0.032 R)
• M70: 30,453,489 km (0.118 R)
• M71: 31,262,514 km (0.061 R)
• M72: 33,108,552 km (0.087 R)
• M73: 33,471,626 km (0.091 R)
• M74: 33,835,897 km (0.114 R)
• M75: 33,992,526 km (0.052 R)
• M76: 34,936,937 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 51.5

Radius: 7.6

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 14.08 AU - 15.84 AU

Year: 24404 Days

Day: 24 Hours

Environment

Temp: -201 °C

Axial Tilt: 170.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 36,669,952 km

• M1: 103,821 km (0.073 R)
• M2: 275,110 km (0.109 R)
• M3: 323,879 km (0.062 R)
• M4: 515,813 km (0.077 R)
• M5: 937,679 km (0.066 R)
• M6: 1,000,959 km (0.108 R)
• M7: 1,131,857 km (0.057 R)
• M8: 1,928,915 km (0.09 R)
• M9: 2,261,920 km (0.041 R)
• M10: 3,439,853 km (0.042 R)
• M11: 3,791,708 km (0.066 R)
• M12: 4,314,552 km (0.083 R)
• M13: 4,584,427 km (0.075 R)
• M14: 5,112,358 km (0.067 R)
• M15: 5,513,579 km (0.103 R)
• M16: 5,688,758 km (0.101 R)
• M17: 6,746,415 km (0.062 R)
• M18: 7,186,383 km (0.091 R)
• M19: 7,635,475 km (0.048 R)
• M20: 8,493,718 km (0.074 R)
• M21: 9,278,210 km (0.086 R)
• M22: 9,626,473 km (0.047 R)
• M23: 11,617,322 km (0.05 R)
• M24: 13,415,787 km (0.118 R)
• M25: 13,968,103 km (0.073 R)
• M26: 15,834,336 km (0.097 R)
• M27: 16,923,558 km (0.108 R)
• M28: 17,348,865 km (0.112 R)
• M29: 18,383,933 km (0.08 R)
• M30: 18,645,879 km (0.111 R)
• M31: 18,733,393 km (0.032 R)
• M32: 19,616,769 km (0.096 R)
• M33: 20,875,934 km (0.098 R)
• M34: 21,377,835 km (0.094 R)
• M35: 21,607,168 km (0.106 R)
• M36: 22,161,129 km (0.117 R)
• M37: 22,766,552 km (0.064 R)
• M38: 23,000,822 km (0.107 R)
• M39: 23,424,633 km (0.117 R)
• M40: 23,708,570 km (0.115 R)
• M41: 24,375,477 km (0.097 R)
• M42: 25,484,596 km (0.066 R)
• M43: 27,701,636 km (0.102 R)
• M44: 27,901,648 km (0.064 R)
• M45: 28,303,319 km (0.103 R)
• M46: 28,807,912 km (0.119 R)
• M47: 28,959,904 km (0.083 R)
• M48: 30,855,907 km (0.069 R)
• M49: 30,907,668 km (0.108 R)
• M50: 32,264,670 km (0.093 R)
• M51: 33,854,447 km (0.109 R)
• M52: 36,231,856 km (0.12 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: 460 - 15,517 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit