🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

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: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.53 AU - 0.63 AU

Year: 281 Days

Day: 39.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.28

Radius: 1.39

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.59 AU - 0.75 AU

Year: 349 Days

Day: 45.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.5

Radius: 8.4

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.04 AU - 1.04 AU

Year: 674 Days

Day: 14.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,944,208 km

• M1: 108,159 km (0.112 R)
• M2: 511,326 km (0.08 R)
• M3: 1,036,115 km (0.082 R)
• M4: 1,425,817 km (0.094 R)
• M5: 2,005,359 km (0.089 R)
• M6: 2,503,520 km (0.081 R)
• M7: 2,776,836 km (0.061 R)
• M8: 3,188,529 km (0.104 R)
• M9: 3,459,750 km (0.106 R)
• M10: 4,279,397 km (0.092 R)
• M11: 5,189,101 km (0.118 R)
• M12: 5,743,212 km (0.106 R)
• M13: 6,090,578 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 293.2

Radius: 12.8

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1 AU - 1.14 AU

Year: 704 Days

Day: 7.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,944,208 km

• M1: 159,322 km (0.042 R)
• M2: 684,261 km (0.049 R)
• M3: 1,108,969 km (0.104 R)
• M4: 1,513,930 km (0.072 R)
• M5: 1,955,095 km (0.104 R)
• M6: 2,750,955 km (0.083 R)
• M7: 3,539,486 km (0.039 R)
• M8: 4,027,923 km (0.071 R)
• M9: 4,649,502 km (0.077 R)
• M10: 5,301,898 km (0.108 R)
• M11: 5,735,882 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.3

Radius: 12.9

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.86 AU - 1.34 AU

Year: 734 Days

Day: 5.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 57,944,208 km

• M1: 160,519 km (0.118 R)
• M2: 588,967 km (0.05 R)
• M3: 1,441,824 km (0.073 R)
• M4: 2,294,981 km (0.031 R)
• M5: 2,713,406 km (0.109 R)
• M6: 3,636,126 km (0.111 R)
• M7: 4,383,218 km (0.095 R)
• M8: 5,004,946 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.9

Radius: 14.8

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.52 AU - 2.16 AU

Year: 1587 Days

Day: 5.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 57,944,208 km

• M1: 184,005 km (0.096 R)
• M2: 734,526 km (0.051 R)
• M3: 1,210,995 km (0.07 R)
• M4: 1,715,588 km (0.099 R)
• M5: 2,855,225 km (0.113 R)
• M6: 3,463,939 km (0.056 R)
• M7: 4,323,079 km (0.103 R)
• M8: 5,428,458 km (0.043 R)
• M9: 5,966,711 km (0.079 R)
• M10: 6,491,351 km (0.107 R)
• M11: 6,995,047 km (0.074 R)
• M12: 7,524,773 km (0.066 R)
• M13: 7,996,156 km (0.113 R)
• M14: 9,820,502 km (0.074 R)
• M15: 10,384,635 km (0.106 R)
• M16: 11,760,936 km (0.116 R)
• M17: 12,245,932 km (0.077 R)
• M18: 12,822,033 km (0.119 R)
• M19: 13,699,724 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 778.7

Radius: 9.9

Gravity: 7.95 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 2.19 AU - 2.75 AU

Year: 2468 Days

Day: 12 Hours

Environment

Temp: -204 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 57,944,208 km

• M1: 123,119 km (0.074 R)
• M2: 459,116 km (0.115 R)
• M3: 1,187,957 km (0.119 R)
• M4: 1,511,088 km (0.069 R)
• M5: 1,990,100 km (0.12 R)
• M6: 2,396,408 km (0.104 R)
• M7: 2,794,937 km (0.077 R)
• M8: 5,061,046 km (0.089 R)
• M9: 5,519,862 km (0.097 R)
• M10: 6,661,444 km (0.067 R)
• M11: 7,670,182 km (0.084 R)
• M12: 8,017,548 km (0.076 R)
• M13: 8,914,836 km (0.093 R)
• M14: 9,405,817 km (0.117 R)
• M15: 9,988,799 km (0.104 R)
• M16: 10,987,515 km (0.095 R)
• M17: 11,307,804 km (0.112 R)
• M18: 11,967,082 km (0.04 R)
• M19: 13,272,323 km (0.093 R)
• M20: 14,382,938 km (0.051 R)
• M21: 15,404,691 km (0.04 R)
• M22: 17,053,409 km (0.118 R)
• M23: 17,975,830 km (0.105 R)
• M24: 19,160,495 km (0.029 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.6

Radius: 11

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 3.35 AU - 3.83 AU

Year: 4325 Days

Day: 5.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 57,944,208 km

• M1: 136,732 km (0.094 R)
• M2: 580,290 km (0.098 R)
• M3: 928,404 km (0.108 R)
• M4: 1,759,421 km (0.072 R)
• M5: 2,513,244 km (0.116 R)
• M6: 2,863,154 km (0.086 R)
• M7: 3,367,149 km (0.098 R)
• M8: 3,772,260 km (0.101 R)
• M9: 4,890,205 km (0.063 R)
• M10: 8,138,723 km (0.115 R)
• M11: 8,558,494 km (0.057 R)
• M12: 9,113,652 km (0.114 R)
• M13: 10,034,277 km (0.111 R)
• M14: 11,962,893 km (0.08 R)
• M15: 12,963,104 km (0.042 R)
• M16: 14,790,293 km (0.115 R)
• M17: 15,358,914 km (0.105 R)
• M18: 18,164,622 km (0.103 R)
• M19: 19,215,846 km (0.098 R)
• M20: 19,756,344 km (0.069 R)
• M21: 20,586,163 km (0.041 R)
• M22: 23,828,846 km (0.094 R)
• M23: 25,652,594 km (0.107 R)
• M24: 26,061,146 km (0.12 R)
• M25: 28,603,711 km (0.079 R)
• M26: 30,297,010 km (0.062 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 459.3

Radius: 7.4

Gravity: 8.39 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 8.57 AU - 8.77 AU

Year: 16232 Days

Day: 23.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 57,944,208 km

• M1: 105,167 km (0.092 R)
• M2: 423,811 km (0.029 R)
• M3: 733,628 km (0.068 R)
• M4: 1,085,482 km (0.108 R)
• M5: 1,335,011 km (0.057 R)
• M6: 2,023,461 km (0.084 R)
• M7: 4,439,766 km (0.116 R)
• M8: 5,020,056 km (0.049 R)
• M9: 5,363,832 km (0.106 R)
• M10: 6,370,775 km (0.063 R)
• M11: 6,692,111 km (0.067 R)
• M12: 11,438,104 km (0.068 R)
• M13: 15,257,636 km (0.065 R)
• M14: 17,105,170 km (0.093 R)
• M15: 17,963,413 km (0.111 R)
• M16: 18,686,868 km (0.109 R)
• M17: 20,450,029 km (0.098 R)
• M18: 20,710,628 km (0.039 R)
• M19: 22,229,645 km (0.114 R)
• M20: 29,490,677 km (0.035 R)
• M21: 30,723,363 km (0.06 R)
• M22: 31,294,827 km (0.118 R)
• M23: 32,341,264 km (0.053 R)
• M24: 46,926,758 km (0.087 R)
• M25: 47,228,796 km (0.059 R)
• M26: 52,892,122 km (0.115 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 14,716 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit