🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.2

Radius: 13.4

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.61 AU - 0.77 AU

Year: 396 Days

Day: 7.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 48,128,893 km

• M1: 166,802 km (0.116 R)
• M2: 621,579 km (0.113 R)
• M3: 1,675,945 km (0.103 R)
• M4: 2,272,840 km (0.044 R)
• M5: 2,769,655 km (0.048 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 833.5

Radius: 10.8

Gravity: 7.15 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.62 AU - 0.88 AU

Year: 448 Days

Day: 7.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 48,128,893 km

• M1: 134,339 km (0.081 R)
• M2: 512,373 km (0.091 R)
• M3: 878,289 km (0.113 R)
• M4: 1,268,889 km (0.065 R)
• M5: 1,792,033 km (0.053 R)
• M6: 2,202,679 km (0.037 R)
• M7: 2,696,950 km (0.079 R)
• M8: 3,055,237 km (0.118 R)
• M9: 3,470,222 km (0.07 R)
• M10: 3,895,828 km (0.114 R)
• M11: 4,607,465 km (0.074 R)
• M12: 4,978,767 km (0.112 R)
• M13: 5,454,189 km (0.097 R)
• M14: 6,159,393 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 554.3

Radius: 12.9

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.73 AU - 0.91 AU

Year: 513 Days

Day: 13.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 48,128,893 km

• M1: 160,967 km (0.099 R)
• M2: 611,556 km (0.114 R)
• M3: 1,197,830 km (0.068 R)
• M4: 1,801,308 km (0.099 R)
• M5: 2,692,911 km (0.09 R)
• M6: 3,131,233 km (0.056 R)
• M7: 3,592,742 km (0.051 R)
• M8: 4,168,096 km (0.072 R)
• M9: 5,226,202 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.8

Radius: 14.7

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.86 AU - 0.9 AU

Year: 570 Days

Day: 13.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 48,128,893 km

• M1: 185,053 km (0.091 R)
• M2: 820,694 km (0.101 R)
• M3: 1,286,242 km (0.087 R)
• M4: 1,766,601 km (0.113 R)
• M5: 2,457,594 km (0.12 R)
• M6: 3,061,520 km (0.083 R)
• M7: 3,927,692 km (0.088 R)
• M8: 5,017,662 km (0.063 R)
• M9: 6,205,320 km (0.109 R)
• M10: 7,061,618 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.3

Radius: 10.9

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.04 AU - 1.5 AU

Year: 988 Days

Day: 10.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 48,128,893 km

• M1: 135,536 km (0.092 R)
• M2: 526,585 km (0.075 R)
• M3: 1,369,718 km (0.032 R)
• M4: 1,880,146 km (0.025 R)
• M5: 2,273,588 km (0.089 R)
• M6: 2,631,875 km (0.115 R)
• M7: 3,172,672 km (0.106 R)
• M8: 3,573,444 km (0.09 R)
• M9: 4,293,908 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.8

Radius: 8.8

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.08 AU - 1.72 AU

Year: 1143 Days

Day: 11.2 Hours

Environment

Temp: -185 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 48,128,893 km

• M1: 109,805 km (0.099 R)
• M2: 425,307 km (0.055 R)
• M3: 775,366 km (0.09 R)
• M4: 1,276,818 km (0.11 R)
• M5: 1,815,819 km (0.071 R)
• M6: 2,220,032 km (0.102 R)
• M7: 2,989,115 km (0.045 R)
• M8: 3,484,434 km (0.09 R)
• M9: 4,622,125 km (0.038 R)
• M10: 5,136,892 km (0.071 R)
• M11: 5,533,027 km (0.096 R)
• M12: 6,408,324 km (0.096 R)
• M13: 7,094,380 km (0.082 R)
• M14: 7,779,837 km (0.099 R)
• M15: 8,303,280 km (0.034 R)
• M16: 9,037,357 km (0.038 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 445.9

Radius: 8.5

Gravity: 6.17 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.99 AU - 4.29 AU

Year: 4794 Days

Day: 11.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 48,128,893 km

• M1: 105,915 km (0.107 R)
• M2: 375,491 km (0.077 R)
• M3: 655,987 km (0.085 R)
• M4: 1,101,639 km (0.108 R)
• M5: 1,452,595 km (0.065 R)
• M6: 1,969,606 km (0.037 R)
• M7: 2,572,036 km (0.089 R)
• M8: 2,855,674 km (0.112 R)
• M9: 3,178,955 km (0.104 R)
• M10: 3,526,620 km (0.075 R)
• M11: 4,531,768 km (0.087 R)
• M12: 5,100,839 km (0.057 R)
• M13: 5,828,931 km (0.096 R)
• M14: 6,624,343 km (0.097 R)
• M15: 8,685,652 km (0.117 R)
• M16: 10,457,041 km (0.046 R)
• M17: 13,571,668 km (0.118 R)
• M18: 14,437,541 km (0.066 R)
• M19: 23,088,786 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 649.2

Radius: 5.5

Gravity: 21.46 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 6.6 AU - 7.06 AU

Year: 12321 Days

Day: 15.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 48,128,893 km

• M1: 73,602 km (0.064 R)
• M2: 1,773,782 km (0.069 R)
• M3: 2,632,175 km (0.106 R)
• M4: 3,658,566 km (0.054 R)
• M5: 4,547,626 km (0.118 R)
• M6: 5,715,237 km (0.055 R)
• M7: 5,933,800 km (0.076 R)
• M8: 6,387,679 km (0.081 R)
• M9: 7,153,321 km (0.12 R)
• M10: 8,913,490 km (0.064 R)
• M11: 12,095,437 km (0.053 R)
• M12: 13,775,720 km (0.059 R)
• M13: 17,211,684 km (0.103 R)
• M14: 18,132,608 km (0.062 R)
• M15: 18,764,510 km (0.058 R)
• M16: 20,663,056 km (0.111 R)
• M17: 25,127,506 km (0.091 R)
• M18: 26,612,713 km (0.118 R)
• M19: 28,050,947 km (0.077 R)
• M20: 29,866,168 km (0.092 R)
• M21: 38,167,204 km (0.102 R)
• M22: 38,683,167 km (0.079 R)
• M23: 41,604,664 km (0.099 R)
• M24: 42,841,090 km (0.107 R)
• M25: 53,305,012 km (0.107 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 353.4

Radius: 7.2

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 6.76 AU - 8.12 AU

Year: 14008 Days

Day: 22.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 48,128,893 km

• M1: 89,609 km (0.11 R)
• M2: 338,241 km (0.117 R)
• M3: 943,663 km (0.032 R)
• M4: 1,576,762 km (0.114 R)
• M5: 2,643,245 km (0.115 R)
• M6: 3,072,740 km (0.119 R)
• M7: 6,462,030 km (0.116 R)
• M8: 7,120,709 km (0.111 R)
• M9: 7,696,062 km (0.105 R)
• M10: 9,511,133 km (0.104 R)
• M11: 9,756,474 km (0.09 R)
• M12: 10,311,183 km (0.051 R)
• M13: 10,780,471 km (0.076 R)
• M14: 11,318,425 km (0.084 R)
• M15: 16,356,134 km (0.085 R)
• M16: 17,066,275 km (0.112 R)
• M17: 19,164,235 km (0.105 R)
• M18: 20,275,149 km (0.069 R)
• M19: 27,458,689 km (0.12 R)
• M20: 38,730,290 km (0.12 R)
• M21: 42,991,436 km (0.111 R)
• M22: 43,798,367 km (0.094 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: 278 - 18,541 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit