🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.45

Radius: 1.43

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.57 AU - 0.59 AU

Year: 281 Days

Day: 41.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 6.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.55 AU - 0.65 AU

Year: 296 Days

Day: 17.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.5

Radius: 12.5

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.69 AU - 0.89 AU

Year: 446 Days

Day: 6.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 73,763,360 km

• M1: 156,629 km (0.11 R)
• M2: 818,300 km (0.054 R)
• M3: 1,767,499 km (0.078 R)
• M4: 2,225,717 km (0.065 R)
• M5: 2,793,441 km (0.068 R)
• M6: 3,920,960 km (0.052 R)
• M7: 4,358,085 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.5

Radius: 10.5

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.71 AU - 1.13 AU

Year: 561 Days

Day: 13.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 73,763,360 km

• M1: 132,095 km (0.095 R)
• M2: 588,817 km (0.068 R)
• M3: 963,709 km (0.069 R)
• M4: 1,390,512 km (0.055 R)
• M5: 1,800,261 km (0.066 R)
• M6: 2,541,518 km (0.053 R)
• M7: 3,334,537 km (0.112 R)
• M8: 3,796,046 km (0.091 R)
• M9: 4,329,811 km (0.087 R)
• M10: 5,046,086 km (0.094 R)
• M11: 5,729,000 km (0.102 R)
• M12: 6,140,693 km (0.108 R)
• M13: 6,754,493 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 533

Radius: 9.5

Gravity: 5.91 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.24 AU - 1.68 AU

Year: 1122 Days

Day: 8.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,763,360 km

• M1: 119,379 km (0.086 R)
• M2: 520,002 km (0.072 R)
• M3: 821,891 km (0.063 R)
• M4: 1,124,078 km (0.089 R)
• M5: 1,907,672 km (0.085 R)
• M6: 2,274,785 km (0.058 R)
• M7: 3,071,992 km (0.102 R)
• M8: 3,639,567 km (0.11 R)
• M9: 4,480,307 km (0.073 R)
• M10: 4,817,949 km (0.115 R)
• M11: 5,288,135 km (0.075 R)
• M12: 6,168,668 km (0.058 R)
• M13: 6,587,542 km (0.069 R)
• M14: 7,239,490 km (0.042 R)
• M15: 7,680,803 km (0.049 R)
• M16: 8,244,638 km (0.073 R)
• M17: 8,863,225 km (0.118 R)
• M18: 9,834,115 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.8

Radius: 12.3

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.88 AU - 4.02 AU

Year: 4074 Days

Day: 5.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 73,763,360 km

• M1: 153,039 km (0.114 R)
• M2: 540,946 km (0.032 R)
• M3: 1,088,773 km (0.082 R)
• M4: 1,549,834 km (0.074 R)
• M5: 2,597,019 km (0.04 R)
• M6: 3,628,048 km (0.071 R)
• M7: 4,068,613 km (0.093 R)
• M8: 4,544,933 km (0.097 R)
• M9: 6,202,328 km (0.083 R)
• M10: 7,198,949 km (0.053 R)
• M11: 7,964,591 km (0.078 R)
• M12: 9,214,032 km (0.091 R)
• M13: 10,078,259 km (0.115 R)
• M14: 10,954,753 km (0.083 R)
• M15: 13,556,559 km (0.103 R)
• M16: 13,986,952 km (0.117 R)
• M17: 14,674,354 km (0.105 R)
• M18: 16,600,128 km (0.113 R)
• M19: 17,936,037 km (0.098 R)
• M20: 18,984,119 km (0.052 R)
• M21: 19,583,857 km (0.037 R)
• M22: 20,011,109 km (0.074 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 341

Radius: 4.7

Gravity: 15.44 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 5.24 AU - 7.6 AU

Year: 10343 Days

Day: 16.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 73,763,360 km

• M1: 59,390 km (0.071 R)
• M2: 220,358 km (0.083 R)
• M3: 608,265 km (0.064 R)
• M4: 919,129 km (0.074 R)
• M5: 1,159,084 km (0.077 R)
• M6: 1,838,408 km (0.108 R)
• M7: 2,071,631 km (0.069 R)
• M8: 2,522,669 km (0.095 R)
• M9: 4,189,788 km (0.114 R)
• M10: 4,539,099 km (0.096 R)
• M11: 5,544,695 km (0.095 R)
• M12: 6,303,755 km (0.061 R)
• M13: 7,471,965 km (0.064 R)
• M14: 9,393,699 km (0.106 R)
• M15: 10,038,466 km (0.073 R)
• M16: 10,275,728 km (0.118 R)
• M17: 11,110,335 km (0.118 R)
• M18: 13,364,625 km (0.064 R)
• M19: 18,681,184 km (0.093 R)
• M20: 19,920,752 km (0.092 R)
• M21: 20,904,806 km (0.112 R)
• M22: 21,841,588 km (0.07 R)
• M23: 22,000,312 km (0.102 R)
• M24: 29,388,502 km (0.068 R)
• M25: 30,168,056 km (0.108 R)
• M26: 34,380,433 km (0.079 R)
• M27: 35,136,650 km (0.088 R)
• M28: 35,464,120 km (0.106 R)
• M29: 38,157,779 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 353.8

Radius: 3

Gravity: 39.31 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 5.27 AU - 8.23 AU

Year: 11150 Days

Day: 24.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 73,763,360 km

• M1: 57,745 km (0.087 R)
• M2: 216,169 km (0.117 R)
• M3: 419,921 km (0.098 R)
• M4: 644,916 km (0.101 R)
• M5: 1,353,412 km (0.097 R)
• M6: 2,304,406 km (0.047 R)
• M7: 2,642,048 km (0.071 R)
• M8: 5,647,918 km (0.066 R)
• M9: 5,746,802 km (0.065 R)
• M10: 6,293,433 km (0.042 R)
• M11: 7,851,046 km (0.113 R)
• M12: 8,224,442 km (0.063 R)
• M13: 10,767,008 km (0.101 R)
• M14: 11,331,590 km (0.04 R)
• M15: 13,143,519 km (0.115 R)
• M16: 13,669,206 km (0.088 R)
• M17: 13,907,366 km (0.1 R)
• M18: 14,638,301 km (0.082 R)
• M19: 15,139,604 km (0.086 R)
• M20: 19,269,552 km (0.096 R)
• M21: 26,963,819 km (0.047 R)
• M22: 28,001,729 km (0.096 R)
• M23: 28,289,406 km (0.055 R)
• M24: 28,968,281 km (0.106 R)
• M25: 29,066,118 km (0.068 R)
• M26: 30,763,456 km (0.118 R)
• M27: 32,000,630 km (0.078 R)
• M28: 32,843,465 km (0.078 R)
• M29: 35,685,226 km (0.115 R)
• M30: 40,370,033 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 539.3

Radius: 7.8

Gravity: 8.86 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 5.76 AU - 7.82 AU

Year: 11250 Days

Day: 24.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 73,763,360 km

• M1: 117,135 km (0.109 R)
• M2: 633,996 km (0.079 R)
• M3: 1,214,735 km (0.111 R)
• M4: 5,057,455 km (0.087 R)
• M5: 5,649,414 km (0.112 R)
• M6: 6,250,199 km (0.082 R)
• M7: 6,699,292 km (0.088 R)
• M8: 10,009,594 km (0.079 R)
• M9: 10,263,012 km (0.071 R)
• M10: 12,100,673 km (0.056 R)
• M11: 12,388,200 km (0.1 R)
• M12: 13,097,144 km (0.09 R)
• M13: 15,053,585 km (0.083 R)
• M14: 16,767,229 km (0.047 R)
• M15: 17,053,110 km (0.088 R)
• M16: 17,414,838 km (0.115 R)
• M17: 24,103,359 km (0.03 R)
• M18: 28,516,197 km (0.115 R)
• M19: 39,401,536 km (0.068 R)
• M20: 40,673,417 km (0.114 R)

Asteroid Belt

Center: 7.82 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 10 - Ice Giant

Semi-Major Axis: 8.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 893.9

Radius: 8

Gravity: 13.97 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 6.81 AU - 10.87 AU

Year: 16711 Days

Day: 23.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 73,763,360 km

• M1: 102,175 km (0.118 R)
• M2: 395,537 km (0.117 R)
• M3: 752,926 km (0.119 R)
• M4: 1,223,112 km (0.096 R)
• M5: 1,485,956 km (0.102 R)
• M6: 2,294,083 km (0.109 R)
• M7: 2,722,681 km (0.092 R)
• M8: 3,652,133 km (0.068 R)
• M9: 4,502,896 km (0.111 R)
• M10: 4,885,118 km (0.078 R)
• M11: 7,601,965 km (0.117 R)
• M12: 9,252,329 km (0.097 R)
• M13: 9,586,531 km (0.105 R)
• M14: 10,102,793 km (0.105 R)
• M15: 10,942,635 km (0.12 R)
• M16: 14,176,941 km (0.119 R)
• M17: 14,696,345 km (0.114 R)
• M18: 15,538,282 km (0.034 R)
• M19: 16,574,247 km (0.096 R)
• M20: 16,984,744 km (0.082 R)
• M21: 20,990,077 km (0.062 R)
• M22: 21,860,438 km (0.046 R)
• M23: 27,025,603 km (0.062 R)
• M24: 29,468,387 km (0.115 R)
• M25: 30,436,584 km (0.067 R)
• M26: 31,676,302 km (0.088 R)
• M27: 33,468,036 km (0.12 R)
• M28: 34,788,686 km (0.09 R)
• M29: 38,526,987 km (0.071 R)
• M30: 50,470,731 km (0.082 R)
• M31: 51,506,846 km (0.103 R)
• M32: 52,030,289 km (0.108 R)
• M33: 52,381,096 km (0.053 R)
• M34: 60,312,326 km (0.104 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 347 - 10,964 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit