🌌 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: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.49 AU - 0.61 AU

Year: 259 Days

Day: 43.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 35.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,924,677 km

• M1: 47,423 km (0.103 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.62 AU - 0.68 AU

Year: 333 Days

Day: 18 Hours

Environment

Temp: -125 °C

Axial Tilt: 21.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.3

Radius: 12.3

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.9 AU - 1.38 AU

Year: 774 Days

Day: 7 Hours

Environment

Temp: -171 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,924,677 km

• M1: 153,188 km (0.113 R)
• M2: 579,991 km (0.118 R)
• M3: 1,196,783 km (0.105 R)
• M4: 1,997,132 km (0.074 R)
• M5: 2,879,909 km (0.111 R)
• M6: 3,310,451 km (0.076 R)
• M7: 3,887,151 km (0.086 R)
• M8: 5,929,012 km (0.085 R)
• M9: 6,958,395 km (0.085 R)
• M10: 7,551,102 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.3

Radius: 8.2

Gravity: 14.67 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.51 AU - 1.77 AU

Year: 1335 Days

Day: 11.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,924,677 km

• M1: 108,907 km (0.053 R)
• M2: 480,957 km (0.113 R)
• M3: 773,421 km (0.104 R)
• M4: 1,090,868 km (0.109 R)
• M5: 1,364,333 km (0.071 R)
• M6: 1,635,254 km (0.077 R)
• M7: 2,064,600 km (0.081 R)
• M8: 2,387,133 km (0.069 R)
• M9: 2,701,887 km (0.03 R)
• M10: 3,545,918 km (0.117 R)
• M11: 3,975,264 km (0.107 R)
• M12: 4,267,878 km (0.064 R)
• M13: 4,555,255 km (0.105 R)
• M14: 5,211,990 km (0.059 R)
• M15: 7,023,620 km (0.072 R)
• M16: 7,343,909 km (0.091 R)
• M17: 7,618,122 km (0.096 R)
• M18: 8,572,257 km (0.112 R)
• M19: 11,141,152 km (0.074 R)
• M20: 13,559,401 km (0.058 R)
• M21: 14,140,739 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.1

Radius: 14.4

Gravity: 3.18 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 2.53 AU - 3.01 AU

Year: 2931 Days

Day: 5.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 47,924,677 km

• M1: 182,360 km (0.086 R)
• M2: 772,523 km (0.065 R)
• M3: 1,426,715 km (0.047 R)
• M4: 2,275,084 km (0.1 R)
• M5: 2,894,420 km (0.077 R)
• M6: 3,758,347 km (0.106 R)
• M7: 4,389,950 km (0.105 R)
• M8: 7,222,884 km (0.088 R)
• M9: 8,269,770 km (0.102 R)
• M10: 8,778,104 km (0.088 R)
• M11: 11,894,377 km (0.11 R)
• M12: 12,720,457 km (0.063 R)
• M13: 13,538,159 km (0.085 R)
• M14: 17,825,633 km (0.032 R)
• M15: 18,447,063 km (0.096 R)
• M16: 19,141,496 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.6

Radius: 13.2

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 3.79 AU - 4.69 AU

Year: 5551 Days

Day: 11.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 47,924,677 km

• M1: 164,558 km (0.078 R)
• M2: 1,066,633 km (0.077 R)
• M3: 1,508,395 km (0.09 R)
• M4: 5,018,111 km (0.11 R)
• M5: 7,145,243 km (0.114 R)
• M6: 8,625,514 km (0.109 R)
• M7: 11,932,525 km (0.053 R)
• M8: 12,657,326 km (0.119 R)
• M9: 13,501,657 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 205.3

Radius: 11

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 5.33 AU - 6.53 AU

Year: 9182 Days

Day: 10.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 47,924,677 km

• M1: 137,032 km (0.113 R)
• M2: 528,230 km (0.074 R)
• M3: 1,125,275 km (0.101 R)
• M4: 1,792,033 km (0.045 R)
• M5: 2,170,516 km (0.067 R)
• M6: 2,867,342 km (0.101 R)
• M7: 3,514,802 km (0.083 R)
• M8: 4,161,813 km (0.085 R)
• M9: 5,901,486 km (0.087 R)
• M10: 6,459,038 km (0.098 R)
• M11: 7,536,890 km (0.115 R)
• M12: 9,209,544 km (0.104 R)
• M13: 9,832,619 km (0.062 R)
• M14: 13,378,687 km (0.11 R)
• M15: 13,801,301 km (0.092 R)
• M16: 15,179,696 km (0.083 R)
• M17: 15,872,932 km (0.118 R)
• M18: 19,190,265 km (0.119 R)
• M19: 21,259,503 km (0.117 R)
• M20: 21,763,049 km (0.057 R)
• M21: 25,271,867 km (0.055 R)
• M22: 28,182,144 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 385.1

Radius: 6.8

Gravity: 8.33 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 6.3 AU - 9.44 AU

Year: 14038 Days

Day: 21.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 47,924,677 km

• M1: 84,672 km (0.095 R)
• M2: 315,203 km (0.072 R)
• M3: 626,217 km (0.096 R)
• M4: 905,516 km (0.119 R)
• M5: 1,171,501 km (0.101 R)
• M6: 1,722,320 km (0.073 R)
• M7: 2,082,552 km (0.047 R)
• M8: 2,375,465 km (0.113 R)
• M9: 4,302,285 km (0.117 R)
• M10: 4,717,868 km (0.061 R)
• M11: 5,874,110 km (0.081 R)
• M12: 6,310,936 km (0.057 R)
• M13: 6,926,681 km (0.044 R)
• M14: 9,205,804 km (0.11 R)
• M15: 9,997,027 km (0.115 R)
• M16: 10,566,846 km (0.071 R)
• M17: 11,770,959 km (0.114 R)
• M18: 12,114,735 km (0.104 R)
• M19: 12,465,093 km (0.108 R)
• M20: 14,126,078 km (0.077 R)
• M21: 14,909,522 km (0.065 R)
• M22: 15,379,858 km (0.045 R)
• M23: 16,491,819 km (0.028 R)
• M24: 18,411,459 km (0.113 R)
• M25: 18,642,139 km (0.1 R)
• M26: 19,905,343 km (0.062 R)
• M27: 20,640,317 km (0.088 R)
• M28: 23,400,697 km (0.077 R)
• M29: 24,775,502 km (0.109 R)
• M30: 28,191,120 km (0.103 R)
• M31: 36,662,698 km (0.052 R)
• M32: 38,138,780 km (0.099 R)
• M33: 42,804,289 km (0.115 R)
• M34: 46,685,606 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 401.8

Radius: 7.8

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 7.92 AU - 8.52 AU

Year: 14984 Days

Day: 21.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 47,924,677 km

• M1: 97,089 km (0.116 R)
• M2: 423,661 km (0.074 R)
• M3: 694,433 km (0.075 R)
• M4: 1,095,206 km (0.1 R)
• M5: 1,799,363 km (0.038 R)
• M6: 2,158,248 km (0.108 R)
• M7: 2,584,902 km (0.108 R)
• M8: 2,907,135 km (0.116 R)
• M9: 3,658,865 km (0.101 R)
• M10: 3,927,243 km (0.036 R)
• M11: 4,180,064 km (0.099 R)
• M12: 5,336,006 km (0.104 R)
• M13: 5,969,703 km (0.067 R)
• M14: 6,266,954 km (0.081 R)
• M15: 7,012,999 km (0.027 R)
• M16: 7,386,395 km (0.11 R)
• M17: 9,860,594 km (0.061 R)
• M18: 11,255,893 km (0.102 R)
• M19: 13,974,236 km (0.112 R)
• M20: 14,566,045 km (0.116 R)
• M21: 17,778,809 km (0.092 R)
• M22: 18,395,452 km (0.115 R)
• M23: 19,186,376 km (0.104 R)
• M24: 21,348,663 km (0.073 R)
• M25: 27,762,074 km (0.073 R)
• M26: 29,438,318 km (0.058 R)
• M27: 31,180,983 km (0.059 R)
• M28: 34,512,827 km (0.064 R)
• M29: 35,958,242 km (0.079 R)
• M30: 36,325,804 km (0.096 R)
• M31: 38,712,488 km (0.109 R)
• M32: 40,272,495 km (0.12 R)
• M33: 46,351,554 km (0.072 R)
• M34: 46,786,884 km (0.113 R)
• M35: 52,227,309 km (0.1 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 252.8

Radius: 3.5

Gravity: 20.64 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 8.47 AU - 9.03 AU

Year: 16457 Days

Day: 22.5 Hours

Environment

Temp: -237 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,924,677 km

• M1: 49,218 km (0.039 R)
• M2: 158,723 km (0.097 R)
• M3: 546,481 km (0.06 R)
• M4: 1,235,678 km (0.098 R)
• M5: 1,483,861 km (0.05 R)
• M6: 1,975,739 km (0.1 R)
• M7: 2,114,117 km (0.081 R)
• M8: 2,528,354 km (0.052 R)
• M9: 2,927,780 km (0.104 R)
• M10: 3,295,491 km (0.118 R)
• M11: 4,039,442 km (0.108 R)
• M12: 4,465,197 km (0.085 R)
• M13: 5,745,905 km (0.09 R)
• M14: 5,992,891 km (0.111 R)
• M15: 6,814,931 km (0.075 R)
• M16: 10,646,581 km (0.027 R)
• M17: 11,959,153 km (0.108 R)
• M18: 23,294,034 km (0.118 R)
• M19: 32,010,354 km (0.108 R)
• M20: 37,206,486 km (0.032 R)
• M21: 38,309,172 km (0.051 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 454 - 14,175 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit