🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.56 AU - 0.62 AU

Year: 293 Days

Day: 29.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 6.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.4

Radius: 10.7

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 1.07 AU - 1.09 AU

Year: 725 Days

Day: 11.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,864,367 km

• M1: 133,441 km (0.119 R)
• M2: 495,019 km (0.078 R)
• M3: 1,360,593 km (0.076 R)
• M4: 1,725,312 km (0.082 R)
• M5: 2,312,334 km (0.103 R)
• M6: 2,658,354 km (0.096 R)
• M7: 3,049,852 km (0.111 R)
• M8: 3,444,491 km (0.119 R)
• M9: 4,081,030 km (0.086 R)
• M10: 4,576,199 km (0.116 R)
• M11: 5,235,776 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683

Radius: 8

Gravity: 10.67 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 1.07 AU - 1.15 AU

Year: 755 Days

Day: 12.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 71,864,367 km

• M1: 99,931 km (0.072 R)
• M2: 406,158 km (0.115 R)
• M3: 1,143,825 km (0.067 R)
• M4: 1,423,573 km (0.077 R)
• M5: 1,792,182 km (0.088 R)
• M6: 2,124,439 km (0.088 R)
• M7: 2,453,854 km (0.115 R)
• M8: 3,652,282 km (0.101 R)
• M9: 4,111,997 km (0.086 R)
• M10: 4,559,743 km (0.074 R)
• M11: 5,128,963 km (0.107 R)
• M12: 5,458,826 km (0.026 R)
• M13: 5,980,175 km (0.1 R)
• M14: 6,683,584 km (0.078 R)
• M15: 7,280,330 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175

Radius: 10.6

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.31 AU - 1.33 AU

Year: 979 Days

Day: 10.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 71,864,367 km

• M1: 131,796 km (0.1 R)
• M2: 674,686 km (0.107 R)
• M3: 1,173,446 km (0.086 R)
• M4: 2,514,142 km (0.09 R)
• M5: 3,112,533 km (0.086 R)
• M6: 3,621,764 km (0.056 R)
• M7: 4,060,385 km (0.08 R)
• M8: 4,519,202 km (0.066 R)
• M9: 4,948,997 km (0.112 R)
• M10: 6,016,677 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 968.3

Radius: 9.1

Gravity: 11.69 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.12 AU - 1.84 AU

Year: 1163 Days

Day: 10.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,864,367 km

• M1: 113,246 km (0.118 R)
• M2: 491,579 km (0.086 R)
• M3: 821,143 km (0.076 R)
• M4: 1,423,424 km (0.077 R)
• M5: 1,719,927 km (0.106 R)
• M6: 2,355,568 km (0.069 R)
• M7: 3,024,420 km (0.048 R)
• M8: 4,432,286 km (0.095 R)
• M9: 4,736,119 km (0.118 R)
• M10: 6,163,432 km (0.055 R)
• M11: 6,591,581 km (0.11 R)
• M12: 7,270,756 km (0.092 R)
• M13: 7,587,305 km (0.085 R)
• M14: 7,885,453 km (0.116 R)
• M15: 9,218,520 km (0.115 R)
• M16: 11,002,325 km (0.077 R)
• M17: 11,490,912 km (0.089 R)
• M18: 12,213,918 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.3

Radius: 10.3

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 3.37 AU - 4.61 AU

Year: 5146 Days

Day: 5.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 71,864,367 km

• M1: 128,205 km (0.063 R)
• M2: 592,258 km (0.09 R)
• M3: 935,136 km (0.062 R)
• M4: 1,371,214 km (0.088 R)
• M5: 1,739,674 km (0.112 R)
• M6: 2,235,740 km (0.1 R)
• M7: 3,010,807 km (0.059 R)
• M8: 3,556,390 km (0.03 R)
• M9: 5,005,994 km (0.07 R)
• M10: 6,782,319 km (0.115 R)
• M11: 9,025,090 km (0.063 R)
• M12: 11,154,017 km (0.102 R)
• M13: 11,483,432 km (0.105 R)
• M14: 11,916,368 km (0.115 R)
• M15: 12,360,225 km (0.06 R)
• M16: 12,917,776 km (0.079 R)
• M17: 13,812,222 km (0.087 R)
• M18: 14,247,103 km (0.11 R)
• M19: 15,724,232 km (0.106 R)
• M20: 21,772,624 km (0.048 R)
• M21: 22,736,034 km (0.067 R)
• M22: 30,110,162 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.7

Radius: 13.4

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 4.09 AU - 4.91 AU

Year: 6164 Days

Day: 8.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 71,864,367 km

• M1: 166,652 km (0.049 R)
• M2: 796,459 km (0.043 R)
• M3: 2,652,370 km (0.094 R)
• M4: 3,166,389 km (0.112 R)
• M5: 3,925,448 km (0.097 R)
• M6: 5,401,082 km (0.05 R)
• M7: 5,837,010 km (0.086 R)
• M8: 6,487,162 km (0.119 R)
• M9: 10,051,182 km (0.089 R)
• M10: 11,547,460 km (0.061 R)
• M11: 13,448,998 km (0.088 R)
• M12: 14,474,492 km (0.098 R)
• M13: 15,148,580 km (0.112 R)
• M14: 16,198,757 km (0.05 R)
• M15: 17,110,705 km (0.096 R)
• M16: 20,961,354 km (0.119 R)
• M17: 23,699,444 km (0.051 R)
• M18: 24,715,663 km (0.058 R)
• M19: 27,171,611 km (0.059 R)
• M20: 30,237,470 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 774.6

Radius: 3.4

Gravity: 67.01 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 5.35 AU - 7.23 AU

Year: 10186 Days

Day: 20.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 71,864,367 km

• M1: 42,336 km (0.09 R)
• M2: 150,645 km (0.106 R)
• M3: 327,171 km (0.051 R)
• M4: 594,951 km (0.086 R)
• M5: 879,785 km (0.081 R)
• M6: 1,248,843 km (0.037 R)
• M7: 1,461,422 km (0.077 R)
• M8: 1,907,522 km (0.054 R)
• M9: 2,062,805 km (0.117 R)
• M10: 2,770,403 km (0.11 R)
• M11: 2,902,348 km (0.066 R)
• M12: 3,348,300 km (0.092 R)
• M13: 4,257,705 km (0.089 R)
• M14: 5,186,857 km (0.095 R)
• M15: 5,698,632 km (0.08 R)
• M16: 7,062,964 km (0.116 R)
• M17: 7,185,635 km (0.066 R)
• M18: 8,677,424 km (0.08 R)
• M19: 9,056,356 km (0.118 R)
• M20: 9,396,691 km (0.06 R)
• M21: 9,545,242 km (0.118 R)
• M22: 9,897,694 km (0.091 R)
• M23: 12,197,612 km (0.049 R)
• M24: 16,420,311 km (0.074 R)
• M25: 17,072,558 km (0.077 R)
• M26: 21,954,236 km (0.111 R)
• M27: 24,757,849 km (0.12 R)
• M28: 28,612,238 km (0.098 R)
• M29: 30,302,844 km (0.114 R)
• M30: 32,961,647 km (0.082 R)
• M31: 33,075,640 km (0.106 R)
• M32: 34,818,007 km (0.085 R)
• M33: 36,620,512 km (0.112 R)
• M34: 37,731,276 km (0.115 R)
• M35: 37,981,254 km (0.053 R)
• M36: 40,279,975 km (0.051 R)
• M37: 42,940,872 km (0.064 R)
• M38: 44,314,330 km (0.101 R)
• M39: 44,731,858 km (0.101 R)
• M40: 48,315,026 km (0.112 R)
• M41: 48,462,230 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 780.2

Radius: 6.4

Gravity: 19.05 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 7.86 AU - 9.98 AU

Year: 17201 Days

Day: 22.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 71,864,367 km

• M1: 79,586 km (0.03 R)
• M2: 280,795 km (0.05 R)
• M3: 549,024 km (0.112 R)
• M4: 908,209 km (0.057 R)
• M5: 1,326,784 km (0.1 R)
• M6: 2,280,769 km (0.116 R)
• M7: 2,635,914 km (0.084 R)
• M8: 4,305,128 km (0.105 R)
• M9: 4,673,886 km (0.107 R)
• M10: 5,247,445 km (0.114 R)
• M11: 8,524,984 km (0.109 R)
• M12: 8,998,910 km (0.072 R)
• M13: 10,407,823 km (0.101 R)
• M14: 11,010,553 km (0.113 R)
• M15: 11,957,807 km (0.093 R)
• M16: 13,095,648 km (0.028 R)
• M17: 13,443,762 km (0.041 R)
• M18: 14,897,704 km (0.098 R)
• M19: 16,054,993 km (0.093 R)
• M20: 16,534,155 km (0.087 R)
• M21: 20,623,712 km (0.101 R)
• M22: 21,961,117 km (0.089 R)
• M23: 24,177,858 km (0.057 R)
• M24: 25,340,383 km (0.091 R)
• M25: 28,699,304 km (0.114 R)
• M26: 30,363,730 km (0.114 R)
• M27: 33,494,215 km (0.106 R)
• M28: 34,145,265 km (0.11 R)
• M29: 35,472,348 km (0.075 R)
• M30: 42,778,858 km (0.095 R)
• M31: 43,544,948 km (0.06 R)
• M32: 44,320,164 km (0.1 R)
• M33: 46,862,730 km (0.118 R)
• M34: 47,513,331 km (0.107 R)
• M35: 48,169,766 km (0.098 R)
• M36: 53,996,304 km (0.039 R)
• M37: 58,193,572 km (0.095 R)
• M38: 58,756,508 km (0.038 R)
• M39: 63,590,165 km (0.092 R)
• M40: 71,864,424 km (0.06 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 409 - 11,563 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit