🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.55 AU - 0.65 AU

Year: 296 Days

Day: 45.1 Hours

Environment

Temp: -128 °C

Axial Tilt: 10.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 27,729,947 km

• M1: 50,265 km (0.096 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 795.5

Radius: 10.2

Gravity: 7.65 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.59 AU - 0.97 AU

Year: 438 Days

Day: 10.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,729,947 km

• M1: 127,009 km (0.077 R)
• M2: 568,472 km (0.1 R)
• M3: 907,461 km (0.117 R)
• M4: 1,329,775 km (0.111 R)
• M5: 1,963,322 km (0.119 R)
• M6: 2,312,783 km (0.08 R)
• M7: 2,662,992 km (0.071 R)
• M8: 3,116,572 km (0.095 R)
• M9: 3,471,718 km (0.113 R)
• M10: 3,893,584 km (0.116 R)
• M11: 4,363,919 km (0.083 R)
• M12: 4,748,835 km (0.112 R)
• M13: 5,237,571 km (0.111 R)
• M14: 5,638,643 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 770.8

Radius: 9

Gravity: 9.52 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.98 AU - 1.4 AU

Year: 825 Days

Day: 14.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 27,729,947 km

• M1: 112,198 km (0.067 R)
• M2: 450,589 km (0.045 R)
• M3: 741,557 km (0.099 R)
• M4: 1,038,808 km (0.089 R)
• M5: 1,607,130 km (0.111 R)
• M6: 1,906,026 km (0.075 R)
• M7: 2,503,221 km (0.098 R)
• M8: 3,180,002 km (0.118 R)
• M9: 3,641,511 km (0.055 R)
• M10: 4,260,398 km (0.113 R)
• M11: 4,751,677 km (0.09 R)
• M12: 5,261,357 km (0.074 R)
• M13: 6,031,487 km (0.065 R)
• M14: 6,368,531 km (0.04 R)
• M15: 7,745,879 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148.9

Radius: 12.7

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.65 AU - 1.81 AU

Year: 1447 Days

Day: 11 Hours

Environment

Temp: -186 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,729,947 km

• M1: 158,125 km (0.096 R)
• M2: 588,518 km (0.086 R)
• M3: 1,178,532 km (0.1 R)
• M4: 1,873,265 km (0.067 R)
• M5: 2,457,594 km (0.113 R)
• M6: 5,683,074 km (0.108 R)
• M7: 6,160,740 km (0.059 R)
• M8: 6,748,510 km (0.043 R)
• M9: 7,484,980 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.8

Radius: 14.8

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 2.84 AU - 4.48 AU

Year: 4452 Days

Day: 12.1 Hours

Environment

Temp: -206 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,729,947 km

• M1: 185,352 km (0.052 R)
• M2: 878,588 km (0.096 R)
• M3: 1,486,255 km (0.033 R)
• M4: 2,556,927 km (0.076 R)
• M5: 3,101,313 km (0.114 R)
• M6: 4,449,190 km (0.115 R)
• M7: 5,365,328 km (0.086 R)
• M8: 7,148,385 km (0.041 R)
• M9: 8,372,993 km (0.109 R)
• M10: 9,478,820 km (0.104 R)
• M11: 11,155,812 km (0.106 R)
• M12: 13,475,327 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.1

Radius: 14.2

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 3.52 AU - 4.09 AU

Year: 4710 Days

Day: 8.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 27,729,947 km

• M1: 176,525 km (0.109 R)
• M2: 653,743 km (0.064 R)
• M3: 1,237,025 km (0.058 R)
• M4: 1,743,862 km (0.12 R)
• M5: 2,225,867 km (0.116 R)
• M6: 3,138,563 km (0.068 R)
• M7: 5,990,946 km (0.118 R)
• M8: 6,785,460 km (0.075 R)
• M9: 8,698,219 km (0.052 R)
• M10: 9,516,070 km (0.049 R)
• M11: 10,173,254 km (0.087 R)
• M12: 10,772,842 km (0.077 R)
• M13: 11,305,560 km (0.075 R)
• M14: 13,059,745 km (0.064 R)
• M15: 14,556,770 km (0.068 R)
• M16: 15,879,964 km (0.115 R)
• M17: 17,644,919 km (0.105 R)
• M18: 18,136,947 km (0.108 R)
• M19: 19,342,406 km (0.087 R)
• M20: 22,553,375 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 388.7

Radius: 14.6

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 3.89 AU - 4.67 AU

Year: 5630 Days

Day: 7.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,729,947 km

• M1: 181,612 km (0.056 R)
• M2: 765,193 km (0.069 R)
• M3: 1,343,688 km (0.091 R)
• M4: 1,901,539 km (0.044 R)
• M5: 3,191,072 km (0.1 R)
• M6: 5,506,997 km (0.117 R)
• M7: 12,025,724 km (0.111 R)
• M8: 14,411,212 km (0.096 R)
• M9: 16,744,490 km (0.088 R)
• M10: 17,455,080 km (0.054 R)
• M11: 23,296,428 km (0.074 R)
• M12: 24,257,444 km (0.093 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.7

Radius: 8.1

Gravity: 7.59 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.85 AU - 5.45 AU

Year: 6375 Days

Day: 7.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 27,729,947 km

• M1: 101,577 km (0.065 R)
• M2: 1,902,436 km (0.091 R)
• M3: 2,701,887 km (0.066 R)
• M4: 3,058,678 km (0.094 R)
• M5: 3,383,305 km (0.076 R)
• M6: 3,936,668 km (0.109 R)
• M7: 4,811,217 km (0.109 R)
• M8: 5,308,630 km (0.099 R)
• M9: 9,001,453 km (0.094 R)
• M10: 9,585,484 km (0.088 R)
• M11: 11,345,503 km (0.072 R)
• M12: 12,530,018 km (0.063 R)
• M13: 13,047,178 km (0.104 R)
• M14: 13,524,695 km (0.119 R)
• M15: 15,258,983 km (0.081 R)
• M16: 18,559,112 km (0.096 R)
• M17: 22,156,641 km (0.082 R)
• M18: 25,943,562 km (0.065 R)
• M19: 27,382,095 km (0.099 R)
• M20: 29,774,913 km (0.101 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.2

Radius: 10

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 4.48 AU - 4.84 AU

Year: 6396 Days

Day: 13.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 27,729,947 km

• M1: 124,316 km (0.116 R)
• M2: 505,940 km (0.105 R)
• M3: 1,545,496 km (0.116 R)
• M4: 2,243,519 km (0.109 R)
• M5: 3,391,982 km (0.118 R)
• M6: 3,721,995 km (0.086 R)
• M7: 4,280,893 km (0.119 R)
• M8: 5,736,480 km (0.095 R)
• M9: 7,027,061 km (0.062 R)
• M10: 9,552,572 km (0.076 R)
• M11: 10,996,341 km (0.12 R)
• M12: 17,744,402 km (0.059 R)
• M13: 18,745,062 km (0.109 R)
• M14: 19,259,230 km (0.115 R)
• M15: 19,716,999 km (0.058 R)
• M16: 20,048,209 km (0.098 R)
• M17: 20,450,777 km (0.079 R)
• M18: 21,831,416 km (0.089 R)
• M19: 25,241,350 km (0.111 R)
• M20: 25,553,710 km (0.113 R)
• M21: 27,400,047 km (0.093 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: 162 - 20,162 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit