🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.44 AU - 0.66 AU

Year: 259 Days

Day: 12.5 Hours

Environment

Temp: -115 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,156,820 km

• M1: 390,002 km (0.117 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.48

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.53 AU - 0.81 AU

Year: 349 Days

Day: 47.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,156,820 km

• M1: 613,501 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473.9

Radius: 11.8

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.89 AU - 1.41 AU

Year: 784 Days

Day: 10.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,156,820 km

• M1: 146,756 km (0.077 R)
• M2: 520,301 km (0.119 R)
• M3: 984,204 km (0.084 R)
• M4: 1,535,622 km (0.049 R)
• M5: 1,910,514 km (0.069 R)
• M6: 2,347,340 km (0.059 R)
• M7: 3,098,770 km (0.072 R)
• M8: 3,491,614 km (0.066 R)
• M9: 3,917,819 km (0.102 R)
• M10: 4,472,079 km (0.087 R)
• M11: 4,859,238 km (0.083 R)
• M12: 5,339,298 km (0.067 R)
• M13: 5,738,574 km (0.057 R)
• M14: 6,216,540 km (0.105 R)
• M15: 6,597,416 km (0.116 R)
• M16: 7,252,654 km (0.119 R)
• M17: 7,630,090 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.3

Radius: 12.7

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.01 AU - 1.41 AU

Year: 846 Days

Day: 9.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,156,820 km

• M1: 158,275 km (0.083 R)
• M2: 611,406 km (0.109 R)
• M3: 1,007,691 km (0.049 R)
• M4: 1,447,210 km (0.087 R)
• M5: 2,313,381 km (0.074 R)
• M6: 3,100,565 km (0.108 R)
• M7: 4,215,070 km (0.115 R)
• M8: 4,817,500 km (0.058 R)
• M9: 5,846,434 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 169.1

Radius: 8.3

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.86 AU - 2.42 AU

Year: 1990 Days

Day: 5.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,156,820 km

• M1: 103,821 km (0.111 R)
• M2: 488,138 km (0.041 R)
• M3: 782,397 km (0.052 R)
• M4: 1,163,572 km (0.114 R)
• M5: 1,441,375 km (0.102 R)
• M6: 1,800,710 km (0.1 R)
• M7: 2,124,290 km (0.064 R)
• M8: 2,545,109 km (0.072 R)
• M9: 2,838,769 km (0.106 R)
• M10: 3,336,332 km (0.116 R)
• M11: 4,099,580 km (0.1 R)
• M12: 4,575,301 km (0.069 R)
• M13: 5,259,861 km (0.034 R)
• M14: 6,716,496 km (0.071 R)
• M15: 7,018,384 km (0.034 R)
• M16: 7,305,163 km (0.063 R)
• M17: 8,344,719 km (0.066 R)
• M18: 8,997,115 km (0.117 R)
• M19: 9,393,250 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590.1

Radius: 9.4

Gravity: 6.68 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 2.04 AU - 3.32 AU

Year: 2790 Days

Day: 10.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 39,156,820 km

• M1: 116,986 km (0.032 R)
• M2: 445,502 km (0.101 R)
• M3: 751,131 km (0.037 R)
• M4: 1,178,981 km (0.087 R)
• M5: 1,811,032 km (0.118 R)
• M6: 2,165,130 km (0.117 R)
• M7: 2,760,530 km (0.119 R)
• M8: 3,164,593 km (0.037 R)
• M9: 4,011,617 km (0.064 R)
• M10: 4,774,416 km (0.118 R)
• M11: 5,143,175 km (0.099 R)
• M12: 5,481,416 km (0.103 R)
• M13: 5,783,154 km (0.077 R)
• M14: 6,642,445 km (0.111 R)
• M15: 7,132,378 km (0.101 R)
• M16: 9,301,696 km (0.116 R)
• M17: 10,251,194 km (0.107 R)
• M18: 12,341,824 km (0.094 R)
• M19: 13,038,651 km (0.086 R)
• M20: 16,398,769 km (0.083 R)
• M21: 17,401,823 km (0.061 R)
• M22: 18,222,068 km (0.037 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.2

Radius: 9.2

Gravity: 5.89 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 2.84 AU - 3.3 AU

Year: 3420 Days

Day: 6.9 Hours

Environment

Temp: -194 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,156,820 km

• M1: 122,221 km (0.07 R)
• M2: 620,532 km (0.106 R)
• M3: 1,084,585 km (0.064 R)
• M4: 1,924,876 km (0.119 R)
• M5: 2,249,802 km (0.098 R)
• M6: 3,361,165 km (0.119 R)
• M7: 3,776,897 km (0.106 R)
• M8: 5,872,464 km (0.089 R)
• M9: 8,610,704 km (0.066 R)
• M10: 9,538,061 km (0.086 R)
• M11: 11,381,406 km (0.047 R)
• M12: 12,321,030 km (0.097 R)
• M13: 14,305,596 km (0.06 R)
• M14: 18,955,995 km (0.119 R)
• M15: 19,547,804 km (0.083 R)
• M16: 20,090,994 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.4

Radius: 12.3

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.67 AU - 3.83 AU

Year: 4617 Days

Day: 7.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 39,156,820 km

• M1: 153,039 km (0.117 R)
• M2: 559,346 km (0.117 R)
• M3: 1,452,296 km (0.118 R)
• M4: 1,885,083 km (0.088 R)
• M5: 2,733,452 km (0.093 R)
• M6: 3,566,862 km (0.095 R)
• M7: 4,274,310 km (0.098 R)
• M8: 4,838,893 km (0.118 R)
• M9: 5,735,732 km (0.076 R)
• M10: 6,740,132 km (0.099 R)
• M11: 7,233,955 km (0.117 R)
• M12: 8,518,552 km (0.107 R)
• M13: 9,741,963 km (0.106 R)
• M14: 11,351,486 km (0.088 R)
• M15: 13,233,128 km (0.066 R)
• M16: 14,168,265 km (0.066 R)
• M17: 16,286,870 km (0.095 R)
• M18: 16,758,402 km (0.085 R)
• M19: 18,736,685 km (0.097 R)
• M20: 19,583,259 km (0.117 R)
• M21: 20,049,555 km (0.038 R)
• M22: 20,866,210 km (0.066 R)
• M23: 23,749,260 km (0.09 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 355.7

Radius: 7.8

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 6.37 AU - 6.39 AU

Year: 10246 Days

Day: 23.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 39,156,820 km

• M1: 96,939 km (0.108 R)
• M2: 352,453 km (0.099 R)
• M3: 714,629 km (0.103 R)
• M4: 1,099,694 km (0.103 R)
• M5: 1,462,768 km (0.078 R)
• M6: 1,714,990 km (0.034 R)
• M7: 2,206,569 km (0.083 R)
• M8: 2,691,714 km (0.07 R)
• M9: 3,562,224 km (0.078 R)
• M10: 3,825,068 km (0.096 R)
• M11: 10,288,444 km (0.076 R)
• M12: 11,174,063 km (0.108 R)
• M13: 12,541,986 km (0.076 R)
• M14: 15,796,937 km (0.113 R)
• M15: 16,183,049 km (0.082 R)
• M16: 19,281,969 km (0.047 R)
• M17: 23,413,712 km (0.112 R)
• M18: 24,084,659 km (0.089 R)
• M19: 25,028,023 km (0.108 R)
• M20: 25,289,520 km (0.112 R)
• M21: 27,171,461 km (0.072 R)
• M22: 27,912,420 km (0.081 R)
• M23: 30,314,513 km (0.07 R)
• M24: 34,546,786 km (0.107 R)
• M25: 35,635,709 km (0.101 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: 443 - 13,024 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit