🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.57 AU - 0.57 AU

Year: 278 Days

Day: 28.9 Hours

Environment

Temp: -122 °C

Axial Tilt: 43 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,609,615 km

• M1: 449,841 km (0.083 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.29

Radius: 1.11

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.48 AU - 0.78 AU

Year: 323 Days

Day: 19.5 Hours

Environment

Temp: -134 °C

Axial Tilt: 26.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,609,615 km

• M1: 26,030 km (0.105 R)
• M2: 312,211 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.8

Radius: 8.5

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.84 AU - 0.88 AU

Year: 515 Days

Day: 14.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,609,615 km

• M1: 105,766 km (0.107 R)
• M2: 380,128 km (0.108 R)
• M3: 649,704 km (0.103 R)
• M4: 1,008,738 km (0.109 R)
• M5: 1,379,891 km (0.088 R)
• M6: 1,819,708 km (0.111 R)
• M7: 2,155,257 km (0.118 R)
• M8: 3,153,224 km (0.105 R)
• M9: 3,561,477 km (0.095 R)
• M10: 3,837,185 km (0.092 R)
• M11: 4,176,922 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.3

Radius: 10.4

Gravity: 7.76 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.17 AU - 1.59 AU

Year: 1047 Days

Day: 7.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,609,615 km

• M1: 130,898 km (0.082 R)
• M2: 526,734 km (0.053 R)
• M3: 872,006 km (0.05 R)
• M4: 1,232,686 km (0.065 R)
• M5: 1,632,113 km (0.098 R)
• M6: 2,033,933 km (0.097 R)
• M7: 2,418,998 km (0.091 R)
• M8: 3,396,769 km (0.096 R)
• M9: 3,959,407 km (0.041 R)
• M10: 4,880,780 km (0.086 R)
• M11: 6,248,703 km (0.059 R)
• M12: 6,686,277 km (0.12 R)
• M13: 7,343,161 km (0.118 R)
• M14: 8,588,563 km (0.089 R)
• M15: 9,159,279 km (0.095 R)
• M16: 10,376,707 km (0.032 R)
• M17: 11,324,559 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 871

Radius: 13.8

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.59 AU - 2.29 AU

Year: 1745 Days

Day: 10.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,609,615 km

• M1: 171,589 km (0.093 R)
• M2: 796,609 km (0.096 R)
• M3: 1,301,651 km (0.1 R)
• M4: 1,858,604 km (0.076 R)
• M5: 2,312,185 km (0.113 R)
• M6: 3,111,337 km (0.117 R)
• M7: 3,688,934 km (0.028 R)
• M8: 5,083,485 km (0.111 R)
• M9: 5,745,157 km (0.079 R)
• M10: 6,259,773 km (0.08 R)
• M11: 7,048,304 km (0.077 R)
• M12: 7,813,796 km (0.1 R)
• M13: 9,311,271 km (0.093 R)
• M14: 9,850,721 km (0.032 R)
• M15: 11,788,611 km (0.102 R)
• M16: 13,411,150 km (0.092 R)
• M17: 13,882,533 km (0.063 R)
• M18: 14,364,836 km (0.07 R)
• M19: 14,949,315 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.9

Radius: 9.7

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 2.58 AU - 3.02 AU

Year: 3025 Days

Day: 5.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,609,615 km

• M1: 120,725 km (0.115 R)
• M2: 468,092 km (0.03 R)
• M3: 831,764 km (0.035 R)
• M4: 1,638,845 km (0.099 R)
• M5: 2,546,605 km (0.116 R)
• M6: 4,074,148 km (0.034 R)
• M7: 4,838,594 km (0.046 R)
• M8: 6,476,541 km (0.061 R)
• M9: 7,300,077 km (0.093 R)
• M10: 7,737,351 km (0.064 R)
• M11: 9,280,154 km (0.047 R)
• M12: 9,728,499 km (0.043 R)
• M13: 11,889,889 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 69.5

Radius: 7.7

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 7.22 AU - 7.52 AU

Year: 12919 Days

Day: 17.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 53,609,615 km

• M1: 95,743 km (0.12 R)
• M2: 604,375 km (0.084 R)
• M3: 1,675,197 km (0.08 R)
• M4: 2,095,567 km (0.102 R)
• M5: 2,361,851 km (0.098 R)
• M6: 3,704,791 km (0.092 R)
• M7: 4,886,764 km (0.119 R)
• M8: 5,467,353 km (0.098 R)
• M9: 6,211,902 km (0.076 R)
• M10: 9,713,390 km (0.076 R)
• M11: 10,629,976 km (0.064 R)
• M12: 11,924,895 km (0.099 R)
• M13: 13,930,703 km (0.072 R)
• M14: 14,770,995 km (0.088 R)
• M15: 15,423,241 km (0.077 R)
• M16: 16,901,867 km (0.055 R)
• M17: 18,163,276 km (0.083 R)
• M18: 20,403,354 km (0.08 R)
• M19: 21,143,714 km (0.071 R)
• M20: 23,913,668 km (0.058 R)
• M21: 25,040,440 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 881.5

Radius: 3.8

Gravity: 61.05 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 5.89 AU - 9.55 AU

Year: 13850 Days

Day: 24 Hours

Environment

Temp: -229 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 53,609,615 km

• M1: 47,273 km (0.1 R)
• M2: 343,327 km (0.096 R)
• M3: 699,669 km (0.075 R)
• M4: 855,550 km (0.119 R)
• M5: 1,022,651 km (0.091 R)
• M6: 1,335,610 km (0.077 R)
• M7: 1,795,025 km (0.118 R)
• M8: 2,070,584 km (0.1 R)
• M9: 2,591,484 km (0.107 R)
• M10: 4,284,034 km (0.068 R)
• M11: 4,476,118 km (0.072 R)
• M12: 5,086,926 km (0.098 R)
• M13: 6,682,537 km (0.081 R)
• M14: 7,116,969 km (0.067 R)
• M15: 7,994,061 km (0.04 R)
• M16: 10,935,006 km (0.096 R)
• M17: 12,417,820 km (0.085 R)
• M18: 12,547,073 km (0.089 R)
• M19: 12,677,372 km (0.112 R)
• M20: 18,154,599 km (0.054 R)
• M21: 19,691,269 km (0.113 R)
• M22: 22,345,733 km (0.096 R)
• M23: 22,537,069 km (0.117 R)
• M24: 23,020,420 km (0.045 R)
• M25: 24,309,355 km (0.116 R)
• M26: 24,920,013 km (0.045 R)
• M27: 27,029,792 km (0.067 R)
• M28: 42,380,329 km (0.057 R)
• M29: 44,764,769 km (0.094 R)
• M30: 45,527,868 km (0.087 R)
• M31: 45,835,591 km (0.112 R)
• M32: 49,962,098 km (0.116 R)
• M33: 50,618,085 km (0.026 R)
• M34: 64,198,729 km (0.118 R)
• M35: 64,392,010 km (0.067 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 256.6

Radius: 4.9

Gravity: 10.69 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 9.04 AU - 10.24 AU

Year: 19326 Days

Day: 18.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 53,609,615 km

• M1: 61,036 km (0.118 R)
• M2: 241,601 km (0.118 R)
• M3: 445,951 km (0.111 R)
• M4: 877,691 km (0.042 R)
• M5: 2,110,377 km (0.093 R)
• M6: 2,476,892 km (0.118 R)
• M7: 5,038,755 km (0.077 R)
• M8: 5,872,614 km (0.081 R)
• M9: 6,916,508 km (0.079 R)
• M10: 10,241,021 km (0.114 R)
• M11: 10,671,863 km (0.106 R)
• M12: 12,395,680 km (0.112 R)
• M13: 12,577,740 km (0.077 R)
• M14: 13,386,915 km (0.08 R)
• M15: 14,971,306 km (0.109 R)
• M16: 16,383,660 km (0.119 R)
• M17: 17,347,967 km (0.061 R)
• M18: 24,698,608 km (0.12 R)
• M19: 26,663,576 km (0.082 R)
• M20: 27,375,214 km (0.118 R)
• M21: 29,911,197 km (0.028 R)
• M22: 33,530,268 km (0.068 R)
• M23: 36,428,577 km (0.097 R)
• M24: 46,994,675 km (0.062 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 524 - 12,426 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit