🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.57 AU - 0.65 AU

Year: 303 Days

Day: 13.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,427,185 km

• M1: 31,266 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.2

Radius: 13.8

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.76 AU - 1 AU

Year: 525 Days

Day: 14.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 39,427,185 km

• M1: 171,589 km (0.101 R)
• M2: 930,349 km (0.081 R)
• M3: 1,565,093 km (0.105 R)
• M4: 2,101,401 km (0.066 R)
• M5: 2,541,369 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.6

Radius: 8.9

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.92 AU - 1.3 AU

Year: 744 Days

Day: 7.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,427,185 km

• M1: 110,852 km (0.057 R)
• M2: 409,749 km (0.064 R)
• M3: 825,481 km (0.112 R)
• M4: 1,209,648 km (0.118 R)
• M5: 1,910,365 km (0.074 R)
• M6: 2,261,621 km (0.049 R)
• M7: 2,848,194 km (0.081 R)
• M8: 3,779,590 km (0.07 R)
• M9: 4,192,929 km (0.105 R)
• M10: 4,806,580 km (0.08 R)
• M11: 5,242,508 km (0.077 R)
• M12: 5,530,484 km (0.092 R)
• M13: 5,936,791 km (0.116 R)
• M14: 6,231,051 km (0.026 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 773

Radius: 12.5

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.91 AU - 1.51 AU

Year: 846 Days

Day: 14.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,427,185 km

• M1: 155,582 km (0.081 R)
• M2: 557,701 km (0.061 R)
• M3: 1,195,586 km (0.097 R)
• M4: 1,721,423 km (0.051 R)
• M5: 2,230,504 km (0.093 R)
• M6: 3,040,128 km (0.107 R)
• M7: 3,528,266 km (0.108 R)
• M8: 3,974,815 km (0.103 R)
• M9: 5,166,213 km (0.093 R)
• M10: 5,865,433 km (0.097 R)
• M11: 7,524,773 km (0.082 R)
• M12: 8,846,320 km (0.082 R)
• M13: 9,365,874 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899

Radius: 10.4

Gravity: 8.31 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.57 AU - 1.77 AU

Year: 1372 Days

Day: 14.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,427,185 km

• M1: 129,851 km (0.085 R)
• M2: 480,808 km (0.083 R)
• M3: 1,168,808 km (0.088 R)
• M4: 1,511,088 km (0.039 R)
• M5: 1,837,660 km (0.059 R)
• M6: 2,211,954 km (0.117 R)
• M7: 2,800,323 km (0.1 R)
• M8: 3,147,090 km (0.103 R)
• M9: 3,738,301 km (0.103 R)
• M10: 4,178,717 km (0.084 R)
• M11: 4,813,012 km (0.028 R)
• M12: 5,335,258 km (0.05 R)
• M13: 6,370,625 km (0.086 R)
• M14: 7,027,061 km (0.042 R)
• M15: 8,504,639 km (0.075 R)
• M16: 10,280,216 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 299.9

Radius: 8.3

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.65 AU - 2.63 AU

Year: 1990 Days

Day: 9.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 39,427,185 km

• M1: 104,719 km (0.062 R)
• M2: 537,356 km (0.062 R)
• M3: 963,709 km (0.104 R)
• M4: 1,277,566 km (0.117 R)
• M5: 1,659,788 km (0.066 R)
• M6: 1,935,048 km (0.086 R)
• M7: 2,721,335 km (0.062 R)
• M8: 3,224,133 km (0.116 R)
• M9: 3,576,885 km (0.119 R)
• M10: 3,887,450 km (0.097 R)
• M11: 4,360,030 km (0.05 R)
• M12: 4,695,877 km (0.118 R)
• M13: 6,594,125 km (0.076 R)
• M14: 6,987,417 km (0.085 R)
• M15: 7,527,316 km (0.055 R)
• M16: 8,150,092 km (0.101 R)
• M17: 9,073,260 km (0.076 R)
• M18: 9,653,551 km (0.115 R)
• M19: 10,388,675 km (0.026 R)
• M20: 11,648,887 km (0.119 R)
• M21: 12,407,947 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.2

Radius: 9.8

Gravity: 9.75 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 4.12 AU - 4.86 AU

Year: 6049 Days

Day: 6.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 39,427,185 km

• M1: 122,072 km (0.095 R)
• M2: 714,479 km (0.036 R)
• M3: 1,125,574 km (0.086 R)
• M4: 2,604,200 km (0.084 R)
• M5: 3,624,158 km (0.117 R)
• M6: 3,959,706 km (0.092 R)
• M7: 4,395,335 km (0.029 R)
• M8: 5,152,749 km (0.096 R)
• M9: 5,485,305 km (0.056 R)
• M10: 5,929,461 km (0.11 R)
• M11: 7,182,493 km (0.096 R)
• M12: 8,603,972 km (0.103 R)
• M13: 9,073,410 km (0.097 R)
• M14: 9,832,619 km (0.11 R)
• M15: 10,393,761 km (0.084 R)
• M16: 10,828,343 km (0.107 R)
• M17: 11,224,777 km (0.118 R)
• M18: 11,734,008 km (0.102 R)
• M19: 13,524,545 km (0.091 R)
• M20: 14,574,573 km (0.116 R)
• M21: 17,571,467 km (0.106 R)
• M22: 20,426,841 km (0.071 R)
• M23: 20,956,567 km (0.074 R)
• M24: 22,440,429 km (0.088 R)
• M25: 22,842,398 km (0.104 R)
• M26: 25,096,090 km (0.045 R)
• M27: 25,967,198 km (0.107 R)
• M28: 26,768,295 km (0.118 R)
• M29: 28,513,653 km (0.058 R)
• M30: 32,535,891 km (0.077 R)
• M31: 36,146,137 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 709.5

Radius: 5.9

Gravity: 20.38 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 6.51 AU - 10.29 AU

Year: 15479 Days

Day: 24.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 39,427,185 km

• M1: 75,547 km (0.068 R)
• M2: 397,482 km (0.069 R)
• M3: 763,548 km (0.111 R)
• M4: 1,086,230 km (0.08 R)
• M5: 1,279,660 km (0.111 R)
• M6: 2,598,814 km (0.04 R)
• M7: 3,123,005 km (0.105 R)
• M8: 3,772,559 km (0.091 R)
• M9: 6,507,208 km (0.06 R)
• M10: 7,935,569 km (0.108 R)
• M11: 10,509,250 km (0.113 R)
• M12: 11,215,203 km (0.119 R)
• M13: 11,457,402 km (0.038 R)
• M14: 16,128,296 km (0.081 R)
• M15: 19,309,046 km (0.101 R)
• M16: 19,744,974 km (0.107 R)
• M17: 30,717,230 km (0.048 R)
• M18: 31,072,675 km (0.078 R)
• M19: 33,763,192 km (0.084 R)
• M20: 37,812,358 km (0.106 R)
• M21: 50,221,950 km (0.114 R)
• M22: 57,604,306 km (0.056 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 88.6

Radius: 7.1

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 8.48 AU - 11.94 AU

Year: 20743 Days

Day: 15.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 39,427,185 km

• M1: 88,263 km (0.11 R)
• M2: 337,343 km (0.074 R)
• M3: 573,259 km (0.093 R)
• M4: 871,258 km (0.11 R)
• M5: 1,580,502 km (0.057 R)
• M6: 2,350,781 km (0.116 R)
• M7: 3,673,077 km (0.118 R)
• M8: 4,304,380 km (0.107 R)
• M9: 5,651,658 km (0.095 R)
• M10: 8,374,788 km (0.093 R)
• M11: 10,304,301 km (0.059 R)
• M12: 13,697,480 km (0.043 R)
• M13: 14,049,484 km (0.092 R)
• M14: 15,203,931 km (0.084 R)
• M15: 16,354,638 km (0.042 R)
• M16: 18,188,109 km (0.079 R)
• M17: 18,684,924 km (0.102 R)
• M18: 19,118,009 km (0.117 R)
• M19: 19,631,579 km (0.116 R)
• M20: 21,227,788 km (0.105 R)
• M21: 22,581,799 km (0.095 R)
• M22: 23,321,410 km (0.097 R)
• M23: 25,549,072 km (0.046 R)
• M24: 27,356,215 km (0.053 R)
• M25: 30,027,135 km (0.082 R)
• M26: 33,286,723 km (0.094 R)
• M27: 34,029,925 km (0.048 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 12,103 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit