🌌 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: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.5 AU - 0.72 AU

Year: 303 Days

Day: 41.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 6.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 64,837,817 km

• M1: 22,140 km (0.114 R)
• M2: 144,960 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.4

Radius: 12.3

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.75 AU - 0.89 AU

Year: 472 Days

Day: 7.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 64,837,817 km

• M1: 153,188 km (0.042 R)
• M2: 536,907 km (0.059 R)
• M3: 937,530 km (0.107 R)
• M4: 1,446,013 km (0.091 R)
• M5: 1,873,265 km (0.119 R)
• M6: 2,313,681 km (0.098 R)
• M7: 2,832,785 km (0.086 R)
• M8: 3,244,628 km (0.037 R)
• M9: 3,663,801 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 652.2

Radius: 8.4

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.71 AU - 0.99 AU

Year: 498 Days

Day: 9.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 64,837,817 km

• M1: 104,419 km (0.073 R)
• M2: 380,727 km (0.084 R)
• M3: 786,137 km (0.046 R)
• M4: 1,060,799 km (0.048 R)
• M5: 1,349,074 km (0.081 R)
• M6: 2,123,243 km (0.105 R)
• M7: 2,722,532 km (0.073 R)
• M8: 3,368,645 km (0.064 R)
• M9: 3,708,681 km (0.083 R)
• M10: 4,472,677 km (0.082 R)
• M11: 4,947,501 km (0.105 R)
• M12: 6,106,735 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.4

Radius: 13.8

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 2.93 AU - 3.89 AU

Year: 4004 Days

Day: 13.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 64,837,817 km

• M1: 171,738 km (0.082 R)
• M2: 625,319 km (0.069 R)
• M3: 1,300,753 km (0.059 R)
• M4: 2,291,241 km (0.073 R)
• M5: 2,763,073 km (0.089 R)
• M6: 4,587,120 km (0.077 R)
• M7: 5,372,060 km (0.109 R)
• M8: 6,546,104 km (0.073 R)
• M9: 9,320,695 km (0.115 R)
• M10: 10,080,503 km (0.084 R)
• M11: 11,319,472 km (0.067 R)
• M12: 14,886,185 km (0.104 R)
• M13: 15,869,342 km (0.084 R)
• M14: 16,319,931 km (0.073 R)
• M15: 16,837,091 km (0.081 R)
• M16: 17,723,309 km (0.073 R)
• M17: 20,173,572 km (0.1 R)
• M18: 25,969,592 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.3

Radius: 9.7

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 3.2 AU - 3.8 AU

Year: 4163 Days

Day: 12.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 64,837,817 km

• M1: 120,875 km (0.063 R)
• M2: 655,089 km (0.111 R)
• M3: 3,321,821 km (0.113 R)
• M4: 5,246,846 km (0.076 R)
• M5: 8,427,746 km (0.085 R)
• M6: 8,972,581 km (0.079 R)
• M7: 9,508,590 km (0.089 R)
• M8: 10,437,892 km (0.09 R)

Asteroid Belt

Center: 4.42 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.8

Radius: 12.2

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 5.08 AU - 5.58 AU

Year: 7824 Days

Day: 11.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 64,837,817 km

• M1: 156,779 km (0.088 R)
• M2: 767,437 km (0.11 R)
• M3: 1,307,485 km (0.111 R)
• M4: 1,688,661 km (0.074 R)
• M5: 2,422,588 km (0.049 R)
• M6: 3,886,403 km (0.049 R)
• M7: 6,937,003 km (0.068 R)
• M8: 7,959,056 km (0.052 R)
• M9: 8,549,668 km (0.119 R)
• M10: 9,397,738 km (0.082 R)
• M11: 9,818,707 km (0.092 R)
• M12: 12,898,179 km (0.1 R)
• M13: 16,235,259 km (0.109 R)
• M14: 16,979,508 km (0.109 R)
• M15: 18,174,346 km (0.065 R)
• M16: 18,755,683 km (0.118 R)
• M17: 22,591,074 km (0.119 R)
• M18: 24,122,507 km (0.112 R)
• M19: 24,913,730 km (0.044 R)
• M20: 25,450,637 km (0.048 R)
• M21: 27,771,648 km (0.108 R)
• M22: 28,349,096 km (0.066 R)
• M23: 30,028,631 km (0.083 R)
• M24: 30,637,046 km (0.105 R)
• M25: 31,357,060 km (0.105 R)
• M26: 33,585,171 km (0.1 R)
• M27: 34,571,769 km (0.058 R)
• M28: 36,258,634 km (0.068 R)
• M29: 37,413,380 km (0.116 R)
• M30: 40,900,806 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 563.2

Radius: 12

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 5.77 AU - 6.13 AU

Year: 9228 Days

Day: 11.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,837,817 km

• M1: 149,598 km (0.062 R)
• M2: 836,102 km (0.075 R)
• M3: 1,605,185 km (0.104 R)
• M4: 2,046,798 km (0.106 R)
• M5: 2,843,407 km (0.094 R)
• M6: 3,521,384 km (0.085 R)
• M7: 4,250,674 km (0.12 R)
• M8: 4,637,534 km (0.118 R)
• M9: 5,450,898 km (0.093 R)
• M10: 7,052,941 km (0.107 R)
• M11: 11,112,130 km (0.074 R)
• M12: 13,193,335 km (0.062 R)
• M13: 14,082,396 km (0.091 R)
• M14: 14,759,476 km (0.116 R)
• M15: 20,431,928 km (0.075 R)
• M16: 24,138,664 km (0.076 R)
• M17: 27,126,582 km (0.1 R)
• M18: 31,900,549 km (0.11 R)
• M19: 36,398,808 km (0.056 R)
• M20: 38,620,037 km (0.103 R)
• M21: 40,068,593 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 14.8

Radius: 5.1

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 5.07 AU - 7.77 AU

Year: 10343 Days

Day: 24.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,837,817 km

• M1: 64,028 km (0.089 R)
• M2: 230,979 km (0.11 R)
• M3: 708,047 km (0.105 R)
• M4: 2,018,823 km (0.098 R)
• M5: 6,267,852 km (0.115 R)
• M6: 6,587,393 km (0.04 R)
• M7: 7,556,637 km (0.062 R)
• M8: 8,767,931 km (0.068 R)
• M9: 10,036,820 km (0.084 R)
• M10: 11,243,477 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 832.3

Radius: 4.8

Gravity: 36.12 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 5.83 AU - 7.71 AU

Year: 11200 Days

Day: 20.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 64,837,817 km

• M1: 59,690 km (0.112 R)
• M2: 268,827 km (0.119 R)
• M3: 455,825 km (0.099 R)
• M4: 687,402 km (0.119 R)
• M5: 973,433 km (0.069 R)
• M6: 1,348,774 km (0.066 R)
• M7: 1,831,676 km (0.099 R)
• M8: 2,168,571 km (0.091 R)
• M9: 2,322,357 km (0.103 R)
• M10: 2,504,119 km (0.108 R)
• M11: 2,988,816 km (0.067 R)
• M12: 4,595,347 km (0.083 R)
• M13: 5,250,137 km (0.102 R)
• M14: 8,592,602 km (0.102 R)
• M15: 9,227,346 km (0.1 R)
• M16: 9,378,141 km (0.087 R)
• M17: 11,550,152 km (0.098 R)
• M18: 12,261,789 km (0.101 R)
• M19: 12,444,299 km (0.114 R)
• M20: 12,814,554 km (0.053 R)
• M21: 13,319,596 km (0.088 R)
• M22: 13,577,054 km (0.085 R)
• M23: 14,845,644 km (0.088 R)
• M24: 16,558,390 km (0.116 R)
• M25: 16,781,291 km (0.064 R)
• M26: 17,006,286 km (0.063 R)
• M27: 17,693,239 km (0.074 R)
• M28: 21,145,061 km (0.039 R)
• M29: 23,213,102 km (0.06 R)
• M30: 27,227,261 km (0.086 R)
• M31: 27,851,084 km (0.049 R)
• M32: 28,272,053 km (0.025 R)
• M33: 29,127,005 km (0.082 R)
• M34: 29,889,056 km (0.113 R)
• M35: 31,566,497 km (0.108 R)
• M36: 41,583,271 km (0.087 R)
• M37: 42,967,201 km (0.073 R)
• M38: 46,856,895 km (0.096 R)
• M39: 49,422,649 km (0.06 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 437.5

Radius: 6.5

Gravity: 10.36 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 9 AU - 10.72 AU

Year: 19686 Days

Day: 16.9 Hours

Environment

Temp: -235 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 64,837,817 km

• M1: 83,625 km (0.086 R)
• M2: 490,831 km (0.108 R)
• M3: 761,004 km (0.072 R)
• M4: 1,829,283 km (0.063 R)
• M5: 2,365,890 km (0.073 R)
• M6: 3,690,579 km (0.052 R)
• M7: 4,163,458 km (0.089 R)
• M8: 4,478,960 km (0.076 R)
• M9: 5,981,820 km (0.052 R)
• M10: 6,591,731 km (0.093 R)
• M11: 10,737,686 km (0.065 R)
• M12: 11,698,703 km (0.055 R)
• M13: 14,208,656 km (0.113 R)
• M14: 19,124,592 km (0.11 R)
• M15: 20,532,457 km (0.066 R)
• M16: 26,535,222 km (0.034 R)
• M17: 27,073,624 km (0.09 R)
• M18: 28,172,271 km (0.111 R)
• M19: 30,693,294 km (0.077 R)
• M20: 31,048,440 km (0.09 R)
• M21: 34,622,931 km (0.06 R)
• M22: 46,350,806 km (0.099 R)
• M23: 51,833,269 km (0.111 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: 463 - 12,040 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit