🌌 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: 1.87

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.49 AU - 0.79 AU

Year: 326 Days

Day: 42.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 45 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,317,005 km

• M1: 461,360 km (0.096 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.5 AU - 0.82 AU

Year: 341 Days

Day: 42.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423

Radius: 13.7

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.74 AU - 0.96 AU

Year: 498 Days

Day: 14.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,317,005 km

• M1: 170,392 km (0.107 R)
• M2: 623,524 km (0.117 R)
• M3: 1,106,127 km (0.056 R)
• M4: 2,136,557 km (0.069 R)
• M5: 2,663,740 km (0.109 R)
• M6: 3,266,619 km (0.08 R)
• M7: 4,154,034 km (0.03 R)
• M8: 4,619,582 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 945.6

Radius: 8.8

Gravity: 12.21 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.92 AU - 1.48 AU

Year: 836 Days

Day: 9.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 71,317,005 km

• M1: 109,506 km (0.069 R)
• M2: 465,549 km (0.11 R)
• M3: 769,980 km (0.027 R)
• M4: 1,047,634 km (0.06 R)
• M5: 1,363,585 km (0.119 R)
• M6: 1,637,797 km (0.083 R)
• M7: 2,119,802 km (0.106 R)
• M8: 2,423,037 km (0.051 R)
• M9: 3,172,372 km (0.084 R)
• M10: 3,541,730 km (0.081 R)
• M11: 3,987,681 km (0.043 R)
• M12: 4,505,140 km (0.08 R)
• M13: 5,104,728 km (0.106 R)
• M14: 5,573,269 km (0.096 R)
• M15: 6,264,261 km (0.056 R)
• M16: 6,940,892 km (0.114 R)
• M17: 7,491,861 km (0.11 R)
• M18: 8,254,063 km (0.072 R)
• M19: 8,708,541 km (0.116 R)
• M20: 10,081,999 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.6

Radius: 14.5

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 2.47 AU - 2.61 AU

Year: 2574 Days

Day: 11.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,317,005 km

• M1: 181,163 km (0.105 R)
• M2: 820,544 km (0.065 R)
• M3: 1,742,516 km (0.044 R)
• M4: 2,574,879 km (0.088 R)
• M5: 3,171,026 km (0.09 R)
• M6: 3,642,409 km (0.054 R)
• M7: 4,479,259 km (0.116 R)
• M8: 7,336,130 km (0.074 R)
• M9: 8,801,890 km (0.108 R)
• M10: 10,601,851 km (0.094 R)
• M11: 13,834,213 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.1

Radius: 12.3

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 2.47 AU - 3.93 AU

Year: 3640 Days

Day: 14 Hours

Environment

Temp: -195 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,317,005 km

• M1: 153,039 km (0.12 R)
• M2: 547,827 km (0.085 R)
• M3: 997,369 km (0.116 R)
• M4: 1,668,465 km (0.066 R)
• M5: 2,197,144 km (0.119 R)
• M6: 2,759,632 km (0.079 R)
• M7: 3,898,221 km (0.067 R)
• M8: 4,907,109 km (0.054 R)
• M9: 5,646,572 km (0.1 R)
• M10: 6,215,343 km (0.118 R)
• M11: 7,169,328 km (0.114 R)
• M12: 8,746,688 km (0.059 R)
• M13: 11,408,633 km (0.055 R)
• M14: 12,836,844 km (0.108 R)
• M15: 13,503,452 km (0.117 R)
• M16: 15,994,855 km (0.083 R)
• M17: 17,295,608 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 214.7

Radius: 12.6

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 4.23 AU - 6.71 AU

Year: 8134 Days

Day: 10.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 71,317,005 km

• M1: 156,629 km (0.078 R)
• M2: 561,590 km (0.101 R)
• M3: 1,574,368 km (0.091 R)
• M4: 2,158,847 km (0.083 R)
• M5: 2,576,674 km (0.103 R)
• M6: 3,123,604 km (0.082 R)
• M7: 5,354,557 km (0.117 R)
• M8: 7,347,051 km (0.087 R)
• M9: 9,628,717 km (0.119 R)
• M10: 11,543,869 km (0.109 R)
• M11: 13,088,168 km (0.112 R)
• M12: 13,910,059 km (0.115 R)
• M13: 23,219,834 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 117.3

Radius: 7.7

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 6.01 AU - 6.43 AU

Year: 9863 Days

Day: 19.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 71,317,005 km

• M1: 95,743 km (0.109 R)
• M2: 360,531 km (0.109 R)
• M3: 660,325 km (0.119 R)
• M4: 901,626 km (0.081 R)
• M5: 2,349,584 km (0.116 R)
• M6: 2,603,901 km (0.104 R)
• M7: 2,876,617 km (0.077 R)
• M8: 3,187,482 km (0.113 R)
• M9: 4,233,620 km (0.111 R)
• M10: 5,715,387 km (0.077 R)
• M11: 6,666,680 km (0.119 R)
• M12: 6,952,262 km (0.1 R)
• M13: 7,582,218 km (0.113 R)
• M14: 8,141,864 km (0.099 R)
• M15: 8,653,638 km (0.099 R)
• M16: 9,822,746 km (0.104 R)
• M17: 12,046,069 km (0.072 R)
• M18: 12,953,979 km (0.058 R)
• M19: 14,744,516 km (0.102 R)
• M20: 20,826,716 km (0.108 R)
• M21: 22,912,111 km (0.078 R)
• M22: 26,138,488 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 582.2

Radius: 5.1

Gravity: 22.38 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 8.3 AU - 11.42 AU

Year: 19686 Days

Day: 17.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 71,317,005 km

• M1: 72,405 km (0.073 R)
• M2: 445,353 km (0.036 R)
• M3: 1,023,997 km (0.099 R)
• M4: 1,819,260 km (0.1 R)
• M5: 2,442,335 km (0.071 R)
• M6: 3,224,433 km (0.032 R)
• M7: 3,881,317 km (0.115 R)
• M8: 4,066,519 km (0.032 R)
• M9: 4,257,705 km (0.091 R)
• M10: 4,938,375 km (0.072 R)
• M11: 7,894,280 km (0.104 R)
• M12: 8,549,369 km (0.078 R)
• M13: 14,846,691 km (0.111 R)
• M14: 15,300,870 km (0.032 R)
• M15: 15,686,234 km (0.094 R)
• M16: 16,718,609 km (0.082 R)
• M17: 22,074,811 km (0.035 R)
• M18: 22,566,839 km (0.069 R)
• M19: 23,369,282 km (0.118 R)
• M20: 24,819,035 km (0.083 R)
• M21: 25,458,266 km (0.091 R)
• M22: 29,883,671 km (0.055 R)
• M23: 31,342,100 km (0.102 R)
• M24: 42,295,656 km (0.108 R)
• M25: 44,286,954 km (0.067 R)
• M26: 46,661,221 km (0.044 R)
• M27: 47,308,531 km (0.105 R)
• M28: 51,489,642 km (0.112 R)
• M29: 54,290,862 km (0.08 R)
• M30: 56,092,320 km (0.05 R)
• M31: 59,245,544 km (0.102 R)
• M32: 60,769,497 km (0.104 R)
• M33: 66,716,910 km (0.063 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 544 - 15,113 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit