🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.58

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.58 AU - 0.72 AU

Year: 338 Days

Day: 44.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 5.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,931,930 km

• M1: 222,452 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.3

Radius: 12

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.6 AU - 0.88 AU

Year: 411 Days

Day: 11.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,931,930 km

• M1: 152,141 km (0.111 R)
• M2: 675,285 km (0.116 R)
• M3: 1,054,515 km (0.077 R)
• M4: 1,491,192 km (0.081 R)
• M5: 2,064,600 km (0.109 R)
• M6: 2,537,479 km (0.072 R)
• M7: 3,266,769 km (0.115 R)
• M8: 4,205,795 km (0.047 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.1

Radius: 10.1

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1 AU - 1.2 AU

Year: 745 Days

Day: 10.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 78.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 70,931,930 km

• M1: 126,560 km (0.111 R)
• M2: 461,958 km (0.094 R)
• M3: 872,156 km (0.084 R)
• M4: 1,368,372 km (0.102 R)
• M5: 1,690,157 km (0.115 R)
• M6: 2,114,865 km (0.099 R)
• M7: 4,034,505 km (0.085 R)
• M8: 4,456,521 km (0.102 R)
• M9: 5,274,372 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53.9

Radius: 12.9

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 1.33 AU - 1.89 AU

Year: 1319 Days

Day: 6.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 70,931,930 km

• M1: 318,643 km (0.085 R)
• M2: 955,332 km (0.107 R)
• M3: 1,402,630 km (0.085 R)
• M4: 2,260,573 km (0.088 R)
• M5: 2,863,303 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.4

Radius: 14.1

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.36 AU - 2.04 AU

Year: 1431 Days

Day: 11.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 70,931,930 km

• M1: 175,329 km (0.092 R)
• M2: 742,753 km (0.103 R)
• M3: 1,502,411 km (0.076 R)
• M4: 2,115,015 km (0.118 R)
• M5: 3,120,761 km (0.063 R)
• M6: 3,616,080 km (0.075 R)
• M7: 4,628,259 km (0.11 R)
• M8: 5,943,374 km (0.104 R)
• M9: 7,049,201 km (0.069 R)
• M10: 8,973,479 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334

Radius: 10.8

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2.69 AU - 2.73 AU

Year: 2881 Days

Day: 13.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,931,930 km

• M1: 134,339 km (0.097 R)
• M2: 583,880 km (0.102 R)
• M3: 1,218,475 km (0.115 R)
• M4: 1,691,952 km (0.094 R)
• M5: 2,776,237 km (0.027 R)
• M6: 3,302,223 km (0.051 R)
• M7: 5,198,376 km (0.098 R)
• M8: 5,853,166 km (0.059 R)
• M9: 9,946,463 km (0.11 R)
• M10: 10,442,979 km (0.031 R)
• M11: 10,955,800 km (0.103 R)
• M12: 12,473,770 km (0.091 R)
• M13: 13,093,254 km (0.12 R)
• M14: 14,171,556 km (0.072 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 518.7

Radius: 3.1

Gravity: 53.98 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 9.49 AU - 9.85 AU

Year: 19416 Days

Day: 21.4 Hours

Environment

Temp: -237 °C

Axial Tilt: 152.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 70,931,930 km

• M1: 38,596 km (0.073 R)
• M2: 229,034 km (0.058 R)
• M3: 782,098 km (0.098 R)
• M4: 943,215 km (0.043 R)
• M5: 1,152,203 km (0.114 R)
• M6: 1,578,856 km (0.032 R)
• M7: 2,593,429 km (0.099 R)
• M8: 4,966,201 km (0.088 R)
• M9: 5,403,924 km (0.111 R)
• M10: 5,986,757 km (0.03 R)
• M11: 6,231,051 km (0.102 R)
• M12: 6,524,562 km (0.107 R)
• M13: 6,696,449 km (0.064 R)
• M14: 6,959,742 km (0.054 R)
• M15: 7,601,068 km (0.112 R)
• M16: 8,790,520 km (0.108 R)
• M17: 9,593,861 km (0.092 R)
• M18: 9,704,414 km (0.058 R)
• M19: 11,406,688 km (0.041 R)
• M20: 12,557,544 km (0.094 R)
• M21: 15,087,244 km (0.049 R)
• M22: 16,391,738 km (0.11 R)
• M23: 20,386,001 km (0.1 R)
• M24: 21,595,350 km (0.106 R)
• M25: 25,615,195 km (0.042 R)
• M26: 34,962,967 km (0.107 R)
• M27: 40,029,697 km (0.058 R)
• M28: 43,112,162 km (0.12 R)
• M29: 43,716,687 km (0.08 R)
• M30: 47,945,968 km (0.057 R)
• M31: 50,743,897 km (0.115 R)
• M32: 57,024,464 km (0.064 R)
• M33: 57,752,707 km (0.079 R)
• M34: 62,638,124 km (0.104 R)
• M35: 65,777,286 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 913.5

Radius: 3.8

Gravity: 63.26 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 10.1 AU - 11.34 AU

Year: 22662 Days

Day: 21 Hours

Environment

Temp: -233 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 70,931,930 km

• M1: 51,162 km (0.1 R)
• M2: 342,130 km (0.093 R)
• M3: 964,158 km (0.069 R)
• M4: 1,702,274 km (0.051 R)
• M5: 2,198,042 km (0.064 R)
• M6: 2,679,747 km (0.12 R)
• M7: 2,863,902 km (0.069 R)
• M8: 3,228,472 km (0.082 R)
• M9: 4,883,622 km (0.118 R)
• M10: 6,549,993 km (0.088 R)
• M11: 7,230,514 km (0.09 R)
• M12: 8,064,672 km (0.073 R)
• M13: 9,136,092 km (0.117 R)
• M14: 9,373,204 km (0.115 R)
• M15: 9,614,356 km (0.118 R)
• M16: 10,882,796 km (0.095 R)
• M17: 12,187,140 km (0.118 R)
• M18: 14,057,562 km (0.114 R)
• M19: 14,937,946 km (0.093 R)
• M20: 20,294,746 km (0.08 R)
• M21: 20,698,361 km (0.072 R)
• M22: 22,046,986 km (0.091 R)
• M23: 23,453,057 km (0.104 R)
• M24: 24,121,759 km (0.067 R)
• M25: 25,380,625 km (0.062 R)
• M26: 26,803,002 km (0.056 R)
• M27: 30,065,582 km (0.099 R)
• M28: 34,005,840 km (0.051 R)
• M29: 39,047,438 km (0.061 R)
• M30: 42,233,872 km (0.115 R)
• M31: 42,561,791 km (0.082 R)
• M32: 54,552,060 km (0.058 R)
• M33: 57,513,649 km (0.12 R)
• M34: 58,321,179 km (0.056 R)
• M35: 65,055,028 km (0.053 R)
• M36: 65,273,291 km (0.118 R)
• M37: 67,707,996 km (0.097 R)
• M38: 72,288,533 km (0.105 R)
• M39: 73,939,196 km (0.104 R)
• M40: 75,133,586 km (0.117 R)
• M41: 76,098,193 km (0.064 R)
• M42: 86,995,500 km (0.053 R)
• M43: 88,594,103 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 408.9

Radius: 3.9

Gravity: 26.88 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 9.58 AU - 12.26 AU

Year: 23300 Days

Day: 20.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 70,931,930 km

• M1: 48,470 km (0.102 R)
• M2: 278,252 km (0.087 R)
• M3: 566,078 km (0.12 R)
• M4: 714,330 km (0.065 R)
• M5: 1,352,664 km (0.097 R)
• M6: 2,665,984 km (0.062 R)
• M7: 2,934,063 km (0.069 R)
• M8: 3,552,351 km (0.105 R)
• M9: 3,846,610 km (0.108 R)
• M10: 4,483,747 km (0.09 R)
• M11: 6,948,073 km (0.08 R)
• M12: 7,175,462 km (0.106 R)
• M13: 12,363,815 km (0.091 R)
• M14: 15,206,773 km (0.051 R)
• M15: 23,334,276 km (0.052 R)
• M16: 30,192,291 km (0.12 R)
• M17: 31,907,431 km (0.111 R)
• M18: 41,464,042 km (0.094 R)
• M19: 43,733,591 km (0.076 R)
• M20: 52,762,870 km (0.068 R)
• M21: 56,331,527 km (0.03 R)
• M22: 59,677,882 km (0.046 R)
• M23: 66,559,384 km (0.11 R)
• M24: 66,763,435 km (0.099 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: 413 - 14,064 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit