🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.02

Radius: 1.74

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.57 AU - 0.77 AU

Year: 208 Days

Day: 31.3 Hours

Environment

Temp: 157 °C

Axial Tilt: 0.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 1.12 AU - 1.72 AU

Year: 641 Days

Day: 45.4 Hours

Environment

Temp: -52 °C

Axial Tilt: 41.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.19

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 3.79 AU - 4.15 AU

Year: 2996 Days

Day: 36 Hours

Environment

Temp: -129 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 69,669,222 km

• M1: 180,415 km (0.113 R)
• M2: 232,176 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368

Radius: 12.1

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 3.45 AU - 5.57 AU

Year: 3628 Days

Day: 13.4 Hours

Environment

Temp: -147 °C

Axial Tilt: 143 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,669,222 km

• M1: 150,495 km (0.105 R)
• M2: 620,382 km (0.054 R)
• M3: 1,114,803 km (0.074 R)
• M4: 1,660,387 km (0.043 R)
• M5: 2,052,483 km (0.056 R)
• M6: 2,507,260 km (0.095 R)
• M7: 3,264,824 km (0.062 R)
• M8: 3,716,909 km (0.113 R)
• M9: 4,231,376 km (0.107 R)
• M10: 5,258,365 km (0.082 R)
• M11: 6,039,715 km (0.115 R)
• M12: 7,553,346 km (0.041 R)
• M13: 9,025,539 km (0.097 R)
• M14: 10,642,243 km (0.114 R)
• M15: 11,975,758 km (0.046 R)
• M16: 12,924,807 km (0.033 R)
• M17: 13,830,473 km (0.076 R)
• M18: 14,875,115 km (0.042 R)
• M19: 15,768,214 km (0.1 R)
• M20: 17,067,621 km (0.095 R)
• M21: 18,493,438 km (0.056 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.3

Radius: 14.1

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 5.25 AU - 5.37 AU

Year: 4634 Days

Day: 7.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 69,669,222 km

• M1: 175,628 km (0.104 R)
• M2: 637,586 km (0.078 R)
• M3: 1,127,370 km (0.108 R)
• M4: 1,672,654 km (0.107 R)
• M5: 2,117,857 km (0.106 R)
• M6: 3,157,861 km (0.114 R)
• M7: 4,982,806 km (0.06 R)
• M8: 6,681,938 km (0.116 R)
• M9: 7,682,150 km (0.114 R)
• M10: 11,193,062 km (0.03 R)
• M11: 13,857,251 km (0.084 R)
• M12: 16,491,370 km (0.087 R)
• M13: 17,544,240 km (0.095 R)
• M14: 18,119,743 km (0.066 R)
• M15: 20,759,846 km (0.044 R)
• M16: 26,541,205 km (0.09 R)
• M17: 27,813,984 km (0.087 R)
• M18: 29,127,154 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 643.6

Radius: 11.8

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 7.35 AU - 9.81 AU

Year: 9519 Days

Day: 8.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 69,669,222 km

• M1: 146,756 km (0.113 R)
• M2: 757,264 km (0.104 R)
• M3: 1,369,419 km (0.08 R)
• M4: 1,759,271 km (0.112 R)
• M5: 2,553,785 km (0.108 R)
• M6: 3,697,012 km (0.107 R)
• M7: 4,083,423 km (0.099 R)
• M8: 4,699,617 km (0.101 R)
• M9: 6,295,826 km (0.053 R)
• M10: 7,003,275 km (0.064 R)
• M11: 8,313,902 km (0.085 R)
• M12: 10,124,485 km (0.093 R)
• M13: 13,343,382 km (0.066 R)
• M14: 14,072,971 km (0.076 R)
• M15: 15,347,994 km (0.112 R)
• M16: 18,645,131 km (0.104 R)
• M17: 19,789,854 km (0.1 R)
• M18: 20,339,925 km (0.07 R)
• M19: 21,143,265 km (0.092 R)
• M20: 27,857,367 km (0.052 R)
• M21: 28,948,534 km (0.09 R)
• M22: 32,392,876 km (0.096 R)
• M23: 32,828,206 km (0.085 R)
• M24: 35,985,169 km (0.032 R)
• M25: 38,239,161 km (0.07 R)
• M26: 41,602,121 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 613.3

Radius: 5.9

Gravity: 17.62 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 10.51 AU - 14.11 AU

Year: 16358 Days

Day: 23.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 69,669,222 km

• M1: 82,428 km (0.117 R)
• M2: 330,910 km (0.077 R)
• M3: 519,703 km (0.089 R)
• M4: 937,081 km (0.085 R)
• M5: 1,768,696 km (0.076 R)
• M6: 2,019,122 km (0.07 R)
• M7: 3,506,125 km (0.096 R)
• M8: 4,329,213 km (0.118 R)
• M9: 4,991,333 km (0.118 R)
• M10: 5,346,777 km (0.088 R)
• M11: 5,989,450 km (0.063 R)
• M12: 6,431,960 km (0.108 R)
• M13: 8,722,453 km (0.083 R)
• M14: 9,290,925 km (0.104 R)
• M15: 9,719,523 km (0.115 R)
• M16: 13,365,223 km (0.065 R)
• M17: 15,940,551 km (0.082 R)
• M18: 16,632,590 km (0.105 R)
• M19: 17,025,584 km (0.087 R)
• M20: 19,255,640 km (0.091 R)
• M21: 20,485,334 km (0.058 R)
• M22: 21,953,637 km (0.1 R)
• M23: 22,236,527 km (0.094 R)
• M24: 22,521,959 km (0.076 R)
• M25: 23,885,993 km (0.094 R)
• M26: 24,386,248 km (0.106 R)
• M27: 28,307,507 km (0.106 R)
• M28: 28,642,756 km (0.064 R)
• M29: 30,710,049 km (0.028 R)
• M30: 31,182,629 km (0.051 R)
• M31: 37,774,360 km (0.1 R)
• M32: 39,002,259 km (0.068 R)
• M33: 39,695,645 km (0.05 R)
• M34: 44,179,991 km (0.105 R)
• M35: 47,088,772 km (0.088 R)
• M36: 48,829,942 km (0.119 R)
• M37: 50,449,638 km (0.104 R)
• M38: 50,942,413 km (0.097 R)
• M39: 56,753,991 km (0.092 R)
• M40: 62,992,073 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 330.6

Radius: 4.6

Gravity: 15.62 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 14.29 AU - 18.57 AU

Year: 25223 Days

Day: 18.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 69,669,222 km

• M1: 72,256 km (0.104 R)
• M2: 519,703 km (0.094 R)
• M3: 758,760 km (0.071 R)
• M4: 1,309,131 km (0.069 R)
• M5: 1,520,812 km (0.116 R)
• M6: 1,737,430 km (0.056 R)
• M7: 3,876,978 km (0.053 R)
• M8: 5,214,683 km (0.093 R)
• M9: 5,401,082 km (0.117 R)
• M10: 6,528,301 km (0.077 R)
• M11: 8,758,656 km (0.088 R)
• M12: 9,237,070 km (0.099 R)
• M13: 9,510,236 km (0.106 R)
• M14: 11,325,905 km (0.064 R)
• M15: 12,746,337 km (0.083 R)
• M16: 13,016,810 km (0.091 R)
• M17: 14,868,981 km (0.09 R)
• M18: 15,244,322 km (0.085 R)
• M19: 15,549,053 km (0.044 R)
• M20: 15,780,182 km (0.116 R)
• M21: 18,050,180 km (0.093 R)
• M22: 20,713,920 km (0.116 R)
• M23: 22,628,324 km (0.063 R)
• M24: 22,925,425 km (0.09 R)
• M25: 24,553,349 km (0.052 R)
• M26: 26,804,946 km (0.076 R)
• M27: 27,472,751 km (0.072 R)
• M28: 32,460,494 km (0.085 R)
• M29: 33,091,797 km (0.099 R)
• M30: 33,346,562 km (0.105 R)
• M31: 35,832,430 km (0.104 R)
• M32: 38,019,252 km (0.115 R)
• M33: 42,356,692 km (0.039 R)
• M34: 48,472,852 km (0.033 R)
• M35: 51,483,958 km (0.113 R)
• M36: 59,740,862 km (0.096 R)
• M37: 69,252,445 km (0.115 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 373 - 11,861 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit