🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.62 AU - 0.66 AU

Year: 331 Days

Day: 31.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 36.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 445.3

Radius: 8.9

Gravity: 5.62 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.7 AU - 1.06 AU

Year: 533 Days

Day: 14.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 78.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,862,540 km

• M1: 110,702 km (0.116 R)
• M2: 439,967 km (0.071 R)
• M3: 1,049,878 km (0.117 R)
• M4: 1,446,312 km (0.071 R)
• M5: 1,724,714 km (0.045 R)
• M6: 2,807,054 km (0.082 R)
• M7: 3,457,955 km (0.079 R)
• M8: 4,042,882 km (0.052 R)
• M9: 4,574,703 km (0.109 R)
• M10: 4,949,446 km (0.11 R)
• M11: 5,393,302 km (0.114 R)

Asteroid Belt

Center: 1.57 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708.7

Radius: 14.9

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.76 AU - 2.74 AU

Year: 2179 Days

Day: 7.3 Hours

Environment

Temp: -193 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,862,540 km

• M1: 185,801 km (0.097 R)
• M2: 749,186 km (0.111 R)
• M3: 1,865,037 km (0.118 R)
• M4: 2,727,618 km (0.105 R)
• M5: 4,549,421 km (0.109 R)
• M6: 5,941,429 km (0.12 R)
• M7: 8,115,385 km (0.084 R)
• M8: 9,246,644 km (0.09 R)
• M9: 10,261,666 km (0.076 R)
• M10: 12,555,151 km (0.099 R)
• M11: 13,060,493 km (0.081 R)
• M12: 14,612,870 km (0.103 R)
• M13: 16,836,193 km (0.103 R)
• M14: 17,555,609 km (0.032 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 857.5

Radius: 12.1

Gravity: 5.86 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.02 AU - 3.16 AU

Year: 2691 Days

Day: 13 Hours

Environment

Temp: -188 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,862,540 km

• M1: 150,944 km (0.102 R)
• M2: 557,551 km (0.032 R)
• M3: 1,131,558 km (0.086 R)
• M4: 2,009,548 km (0.11 R)
• M5: 2,442,185 km (0.112 R)
• M6: 2,888,136 km (0.079 R)
• M7: 3,806,069 km (0.119 R)
• M8: 7,516,545 km (0.119 R)
• M9: 8,675,779 km (0.061 R)
• M10: 9,723,862 km (0.094 R)
• M11: 10,259,123 km (0.113 R)
• M12: 10,854,373 km (0.049 R)
• M13: 11,854,584 km (0.09 R)
• M14: 12,915,383 km (0.074 R)
• M15: 16,000,390 km (0.1 R)
• M16: 16,964,997 km (0.096 R)
• M17: 17,573,411 km (0.047 R)
• M18: 18,139,041 km (0.092 R)
• M19: 18,716,788 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 500

Radius: 13.2

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 2.83 AU - 3.13 AU

Year: 3322 Days

Day: 6.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 36,862,540 km

• M1: 164,558 km (0.071 R)
• M2: 752,477 km (0.084 R)
• M3: 1,642,435 km (0.115 R)
• M4: 2,242,173 km (0.044 R)
• M5: 4,150,144 km (0.03 R)
• M6: 4,688,996 km (0.038 R)
• M7: 5,323,440 km (0.119 R)
• M8: 5,908,368 km (0.106 R)
• M9: 6,507,807 km (0.072 R)
• M10: 7,087,648 km (0.112 R)
• M11: 9,321,593 km (0.044 R)
• M12: 10,638,653 km (0.053 R)
• M13: 13,639,885 km (0.092 R)
• M14: 15,536,936 km (0.116 R)
• M15: 16,949,439 km (0.091 R)
• M16: 18,790,241 km (0.061 R)
• M17: 19,848,795 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.9

Radius: 12.4

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.23 AU - 4.69 AU

Year: 5088 Days

Day: 7.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,862,540 km

• M1: 161,267 km (0.118 R)
• M2: 571,913 km (0.095 R)
• M3: 1,324,540 km (0.039 R)
• M4: 4,084,471 km (0.077 R)
• M5: 5,923,776 km (0.103 R)
• M6: 7,680,055 km (0.114 R)
• M7: 8,137,526 km (0.094 R)
• M8: 11,669,382 km (0.119 R)
• M9: 12,111,593 km (0.102 R)
• M10: 12,902,068 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.4

Radius: 9.5

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 3.93 AU - 4.23 AU

Year: 5321 Days

Day: 8.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 36,862,540 km

• M1: 119,678 km (0.088 R)
• M2: 443,109 km (0.115 R)
• M3: 765,193 km (0.081 R)
• M4: 1,335,311 km (0.09 R)
• M5: 2,391,023 km (0.117 R)
• M6: 2,735,846 km (0.116 R)
• M7: 3,905,552 km (0.085 R)
• M8: 4,538,201 km (0.112 R)
• M9: 5,554,719 km (0.089 R)
• M10: 6,163,881 km (0.079 R)
• M11: 6,484,768 km (0.107 R)
• M12: 8,415,628 km (0.116 R)
• M13: 9,054,710 km (0.108 R)
• M14: 10,117,454 km (0.034 R)
• M15: 12,037,393 km (0.119 R)
• M16: 12,438,614 km (0.086 R)
• M17: 13,373,900 km (0.085 R)
• M18: 16,097,030 km (0.072 R)
• M19: 19,373,672 km (0.092 R)
• M20: 21,059,341 km (0.041 R)
• M21: 21,863,729 km (0.118 R)
• M22: 23,924,888 km (0.101 R)
• M23: 24,400,011 km (0.115 R)
• M24: 26,112,458 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 341.9

Radius: 4.5

Gravity: 16.88 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.68 AU - 7.4 AU

Year: 9585 Days

Day: 18.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 36,862,540 km

• M1: 55,950 km (0.092 R)
• M2: 215,720 km (0.076 R)
• M3: 534,962 km (0.104 R)
• M4: 727,345 km (0.055 R)
• M5: 946,805 km (0.103 R)
• M6: 1,166,115 km (0.068 R)
• M7: 2,129,376 km (0.074 R)
• M8: 2,562,462 km (0.107 R)
• M9: 2,889,034 km (0.047 R)
• M10: 3,352,189 km (0.118 R)
• M11: 3,555,343 km (0.032 R)
• M12: 3,790,660 km (0.045 R)
• M13: 4,086,565 km (0.064 R)
• M14: 5,770,887 km (0.086 R)
• M15: 6,783,216 km (0.076 R)
• M16: 7,444,588 km (0.093 R)
• M17: 7,948,135 km (0.077 R)
• M18: 8,724,548 km (0.079 R)
• M19: 11,007,411 km (0.039 R)
• M20: 11,660,256 km (0.046 R)
• M21: 13,659,482 km (0.107 R)
• M22: 15,439,398 km (0.101 R)
• M23: 17,168,450 km (0.09 R)
• M24: 17,502,352 km (0.048 R)
• M25: 18,951,657 km (0.09 R)
• M26: 25,898,234 km (0.115 R)
• M27: 26,249,041 km (0.109 R)
• M28: 26,602,989 km (0.107 R)
• M29: 26,781,160 km (0.113 R)
• M30: 29,645,511 km (0.07 R)
• M31: 30,611,464 km (0.091 R)
• M32: 34,262,251 km (0.038 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 122.5

Radius: 5.5

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 8.57 AU - 10.47 AU

Year: 18966 Days

Day: 17.1 Hours

Environment

Temp: -239 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,862,540 km

• M1: 134,488 km (0.096 R)
• M2: 342,878 km (0.118 R)
• M3: 729,439 km (0.115 R)
• M4: 1,034,768 km (0.093 R)
• M5: 4,063,078 km (0.106 R)
• M6: 10,105,187 km (0.048 R)
• M7: 22,928,267 km (0.103 R)
• M8: 23,179,741 km (0.107 R)
• M9: 24,552,302 km (0.093 R)
• M10: 25,706,749 km (0.116 R)
• M11: 26,434,991 km (0.101 R)
• M12: 29,485,441 km (0.063 R)
• M13: 32,868,597 km (0.101 R)
• M14: 34,818,755 km (0.06 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.2

Radius: 7

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 8.77 AU - 10.93 AU

Year: 19960 Days

Day: 21.3 Hours

Environment

Temp: -221 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,862,540 km

• M1: 87,664 km (0.09 R)
• M2: 534,513 km (0.09 R)
• M3: 819,048 km (0.084 R)
• M4: 1,089,970 km (0.112 R)
• M5: 2,319,216 km (0.113 R)
• M6: 3,371,637 km (0.116 R)
• M7: 3,808,612 km (0.052 R)
• M8: 4,103,470 km (0.072 R)
• M9: 5,228,146 km (0.058 R)
• M10: 6,826,151 km (0.12 R)
• M11: 7,262,378 km (0.105 R)
• M12: 10,421,436 km (0.075 R)
• M13: 10,659,895 km (0.104 R)
• M14: 11,959,303 km (0.075 R)
• M15: 13,473,083 km (0.112 R)
• M16: 14,749,004 km (0.115 R)
• M17: 15,851,241 km (0.117 R)
• M18: 16,422,555 km (0.086 R)
• M19: 31,122,191 km (0.116 R)
• M20: 32,319,573 km (0.062 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 461 - 15,411 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit