🌌 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: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.5 AU - 0.64 AU

Year: 282 Days

Day: 23.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 34.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.7

Radius: 9

Gravity: 7.02 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.61 AU - 0.81 AU

Year: 392 Days

Day: 10.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,495,108 km

• M1: 112,946 km (0.08 R)
• M2: 423,362 km (0.087 R)
• M3: 791,223 km (0.084 R)
• M4: 1,200,523 km (0.099 R)
• M5: 1,684,622 km (0.091 R)
• M6: 2,020,020 km (0.098 R)
• M7: 2,320,263 km (0.058 R)
• M8: 2,718,343 km (0.105 R)
• M9: 3,712,870 km (0.099 R)
• M10: 4,504,242 km (0.093 R)
• M11: 4,932,691 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.4

Radius: 13.4

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.66 AU - 0.8 AU

Year: 409 Days

Day: 12.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 71,495,108 km

• M1: 166,652 km (0.098 R)
• M2: 618,737 km (0.111 R)
• M3: 1,141,581 km (0.08 R)
• M4: 1,654,253 km (0.032 R)
• M5: 2,099,457 km (0.106 R)
• M6: 3,021,279 km (0.058 R)
• M7: 3,684,596 km (0.107 R)
• M8: 4,570,365 km (0.118 R)
• M9: 5,071,817 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.6

Radius: 14.4

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.58 AU - 0.94 AU

Year: 435 Days

Day: 8.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 71,495,108 km

• M1: 179,069 km (0.09 R)
• M2: 762,800 km (0.103 R)
• M3: 1,400,984 km (0.097 R)
• M4: 1,939,686 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.1

Radius: 12.1

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.94 AU - 1.1 AU

Year: 676 Days

Day: 6.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,495,108 km

• M1: 150,495 km (0.078 R)
• M2: 553,512 km (0.045 R)
• M3: 941,419 km (0.104 R)
• M4: 1,342,790 km (0.094 R)
• M5: 1,784,104 km (0.11 R)
• M6: 2,426,328 km (0.029 R)
• M7: 2,908,482 km (0.1 R)
• M8: 4,298,695 km (0.119 R)
• M9: 5,348,273 km (0.084 R)
• M10: 6,519,625 km (0.067 R)
• M11: 7,713,715 km (0.073 R)
• M12: 8,387,803 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.6

Radius: 8.8

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2 AU - 2.02 AU

Year: 1869 Days

Day: 13.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,495,108 km

• M1: 132,693 km (0.03 R)
• M2: 524,640 km (0.085 R)
• M3: 1,351,168 km (0.028 R)
• M4: 2,069,387 km (0.053 R)
• M5: 2,555,132 km (0.115 R)
• M6: 4,329,512 km (0.112 R)
• M7: 5,815,916 km (0.03 R)
• M8: 6,202,477 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948.2

Radius: 9.9

Gravity: 9.67 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.31 AU - 3.83 AU

Year: 4425 Days

Day: 10.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,495,108 km

• M1: 123,269 km (0.043 R)
• M2: 600,187 km (0.073 R)
• M3: 1,193,641 km (0.096 R)
• M4: 2,919,851 km (0.099 R)
• M5: 3,691,776 km (0.113 R)
• M6: 4,392,792 km (0.093 R)
• M7: 5,207,801 km (0.037 R)
• M8: 5,695,789 km (0.114 R)
• M9: 6,533,537 km (0.096 R)
• M10: 7,666,292 km (0.079 R)
• M11: 8,686,849 km (0.101 R)
• M12: 9,168,405 km (0.059 R)
• M13: 15,589,145 km (0.064 R)
• M14: 18,110,917 km (0.085 R)
• M15: 19,775,343 km (0.073 R)
• M16: 20,609,500 km (0.095 R)
• M17: 22,873,066 km (0.06 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 449.6

Radius: 8.1

Gravity: 6.85 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 3.62 AU - 5.84 AU

Year: 6748 Days

Day: 7.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 71,495,108 km

• M1: 101,128 km (0.118 R)
• M2: 360,232 km (0.082 R)
• M3: 832,512 km (0.086 R)
• M4: 1,197,381 km (0.102 R)
• M5: 1,482,216 km (0.117 R)
• M6: 2,145,383 km (0.045 R)
• M7: 2,535,983 km (0.084 R)
• M8: 2,878,263 km (0.068 R)
• M9: 3,611,891 km (0.096 R)
• M10: 6,864,448 km (0.113 R)
• M11: 8,319,736 km (0.113 R)
• M12: 8,633,742 km (0.081 R)
• M13: 10,459,734 km (0.12 R)
• M14: 11,487,022 km (0.097 R)
• M15: 13,795,616 km (0.115 R)
• M16: 15,852,438 km (0.101 R)
• M17: 16,396,974 km (0.091 R)
• M18: 18,105,381 km (0.059 R)
• M19: 21,576,950 km (0.095 R)
• M20: 22,851,673 km (0.092 R)
• M21: 23,938,651 km (0.106 R)
• M22: 25,798,452 km (0.051 R)
• M23: 27,492,199 km (0.08 R)
• M24: 28,989,225 km (0.11 R)
• M25: 30,539,807 km (0.072 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 625.9

Radius: 3.3

Gravity: 57.47 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 9.09 AU - 9.81 AU

Year: 19057 Days

Day: 24 Hours

Environment

Temp: -222 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 71,495,108 km

• M1: 40,990 km (0.107 R)
• M2: 194,477 km (0.055 R)
• M3: 398,379 km (0.049 R)
• M4: 612,603 km (0.106 R)
• M5: 761,154 km (0.115 R)
• M6: 1,931,907 km (0.112 R)
• M7: 2,751,554 km (0.091 R)
• M8: 3,237,747 km (0.036 R)
• M9: 3,573,145 km (0.07 R)
• M10: 4,411,342 km (0.083 R)
• M11: 5,185,062 km (0.045 R)
• M12: 5,372,808 km (0.107 R)
• M13: 5,604,086 km (0.109 R)
• M14: 9,575,311 km (0.093 R)
• M15: 14,127,275 km (0.104 R)
• M16: 14,790,891 km (0.107 R)
• M17: 15,552,344 km (0.071 R)
• M18: 18,510,193 km (0.12 R)
• M19: 19,036,927 km (0.114 R)
• M20: 19,214,799 km (0.082 R)
• M21: 19,937,058 km (0.074 R)
• M22: 20,397,670 km (0.115 R)
• M23: 21,628,112 km (0.052 R)
• M24: 21,918,930 km (0.105 R)
• M25: 23,209,511 km (0.091 R)
• M26: 24,444,890 km (0.118 R)
• M27: 24,866,308 km (0.1 R)
• M28: 27,496,537 km (0.044 R)
• M29: 27,723,777 km (0.109 R)
• M30: 34,606,027 km (0.089 R)
• M31: 36,079,566 km (0.077 R)
• M32: 38,296,606 km (0.076 R)
• M33: 39,438,487 km (0.082 R)
• M34: 45,173,471 km (0.106 R)
• M35: 48,238,731 km (0.093 R)
• M36: 51,784,500 km (0.114 R)
• M37: 51,957,584 km (0.11 R)
• M38: 52,828,693 km (0.038 R)
• M39: 56,961,184 km (0.067 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: 478 - 19,713 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit