🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.79

Radius: 0.91

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.49 AU - 0.57 AU

Year: 249 Days

Day: 39.1 Hours

Environment

Temp: -113 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.7

Radius: 10.2

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.76 AU - 1.16 AU

Year: 607 Days

Day: 10.8 Hours

Environment

Temp: -149 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,405,322 km

• M1: 127,009 km (0.084 R)
• M2: 719,267 km (0.075 R)
• M3: 1,044,941 km (0.06 R)
• M4: 1,375,852 km (0.118 R)
• M5: 2,722,980 km (0.115 R)
• M6: 3,512,857 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.3

Radius: 12.8

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.83 AU - 1.15 AU

Year: 636 Days

Day: 7.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 46,405,322 km

• M1: 159,172 km (0.093 R)
• M2: 867,967 km (0.086 R)
• M3: 1,366,277 km (0.076 R)
• M4: 1,790,986 km (0.088 R)
• M5: 3,169,680 km (0.074 R)
• M6: 3,719,901 km (0.081 R)
• M7: 4,134,736 km (0.101 R)
• M8: 5,333,314 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417

Radius: 13.5

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.89 AU - 1.11 AU

Year: 646 Days

Day: 9.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 46,405,322 km

• M1: 168,148 km (0.069 R)
• M2: 670,797 km (0.063 R)
• M3: 1,210,546 km (0.078 R)
• M4: 1,837,810 km (0.099 R)
• M5: 2,278,824 km (0.09 R)
• M6: 3,042,222 km (0.09 R)
• M7: 4,598,489 km (0.069 R)
• M8: 5,526,744 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 392.4

Radius: 12.3

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.45 AU - 1.49 AU

Year: 1151 Days

Day: 14.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,405,322 km

• M1: 153,039 km (0.071 R)
• M2: 592,557 km (0.115 R)
• M3: 991,684 km (0.093 R)
• M4: 1,381,985 km (0.079 R)
• M5: 1,771,388 km (0.076 R)
• M6: 2,297,674 km (0.071 R)
• M7: 2,816,778 km (0.091 R)
• M8: 3,441,200 km (0.118 R)
• M9: 3,892,237 km (0.094 R)
• M10: 4,399,374 km (0.093 R)
• M11: 6,275,331 km (0.074 R)
• M12: 6,751,053 km (0.055 R)
• M13: 7,677,961 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 506

Radius: 14.1

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 1.88 AU - 2.68 AU

Year: 2223 Days

Day: 8.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 46,405,322 km

• M1: 175,329 km (0.037 R)
• M2: 978,370 km (0.092 R)
• M3: 1,598,752 km (0.114 R)
• M4: 2,082,552 km (0.059 R)
• M5: 2,623,947 km (0.074 R)
• M6: 3,487,725 km (0.085 R)
• M7: 4,088,510 km (0.11 R)
• M8: 5,638,493 km (0.088 R)
• M9: 6,419,095 km (0.089 R)
• M10: 7,695,015 km (0.111 R)
• M11: 11,908,290 km (0.079 R)
• M12: 12,380,121 km (0.046 R)
• M13: 13,319,596 km (0.101 R)
• M14: 14,749,901 km (0.104 R)
• M15: 15,294,737 km (0.092 R)
• M16: 15,805,913 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960

Radius: 8.5

Gravity: 13.29 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 3.16 AU - 3.38 AU

Year: 3818 Days

Day: 9.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 46,405,322 km

• M1: 105,766 km (0.106 R)
• M2: 489,634 km (0.105 R)
• M3: 919,429 km (0.092 R)
• M4: 1,280,857 km (0.112 R)
• M5: 1,636,750 km (0.091 R)
• M6: 1,932,804 km (0.096 R)
• M7: 2,452,807 km (0.09 R)
• M8: 2,988,517 km (0.114 R)
• M9: 3,858,428 km (0.058 R)
• M10: 4,129,051 km (0.081 R)
• M11: 4,658,478 km (0.089 R)
• M12: 4,939,722 km (0.102 R)
• M13: 5,424,568 km (0.101 R)
• M14: 6,458,140 km (0.071 R)
• M15: 7,038,281 km (0.097 R)
• M16: 7,652,529 km (0.094 R)
• M17: 9,344,930 km (0.118 R)
• M18: 11,136,963 km (0.05 R)
• M19: 12,647,752 km (0.1 R)
• M20: 13,349,964 km (0.032 R)
• M21: 15,163,390 km (0.12 R)
• M22: 16,245,282 km (0.11 R)
• M23: 16,656,526 km (0.058 R)
• M24: 17,438,923 km (0.104 R)
• M25: 17,994,679 km (0.09 R)
• M26: 18,371,666 km (0.114 R)
• M27: 23,094,919 km (0.105 R)
• M28: 23,840,515 km (0.113 R)
• M29: 25,695,080 km (0.084 R)
• M30: 26,738,974 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.3

Radius: 13.2

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.3 AU - 5 AU

Year: 5459 Days

Day: 13.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 46,405,322 km

• M1: 176,825 km (0.044 R)
• M2: 613,650 km (0.065 R)
• M3: 1,048,382 km (0.093 R)
• M4: 1,810,583 km (0.089 R)
• M5: 2,340,309 km (0.082 R)
• M6: 3,027,412 km (0.107 R)
• M7: 3,510,164 km (0.074 R)
• M8: 5,607,676 km (0.097 R)
• M9: 6,433,157 km (0.069 R)
• M10: 7,646,695 km (0.085 R)
• M11: 8,107,457 km (0.103 R)
• M12: 8,929,946 km (0.074 R)
• M13: 9,401,478 km (0.032 R)
• M14: 9,848,477 km (0.112 R)
• M15: 11,139,955 km (0.085 R)
• M16: 12,934,381 km (0.087 R)
• M17: 13,900,634 km (0.111 R)
• M18: 15,189,420 km (0.067 R)
• M19: 20,196,161 km (0.074 R)
• M20: 23,736,245 km (0.045 R)
• M21: 24,567,262 km (0.114 R)
• M22: 25,028,621 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 302.4

Radius: 6.4

Gravity: 7.38 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 7.66 AU - 8.14 AU

Year: 14337 Days

Day: 16.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 46,405,322 km

• M1: 79,885 km (0.08 R)
• M2: 546,481 km (0.099 R)
• M3: 1,305,541 km (0.06 R)
• M4: 1,714,242 km (0.058 R)
• M5: 2,223,024 km (0.11 R)
• M6: 2,702,635 km (0.101 R)
• M7: 3,249,116 km (0.052 R)
• M8: 3,866,507 km (0.095 R)
• M9: 4,767,535 km (0.115 R)
• M10: 5,801,106 km (0.059 R)
• M11: 6,188,714 km (0.097 R)
• M12: 7,293,495 km (0.063 R)
• M13: 10,960,886 km (0.112 R)
• M14: 12,626,509 km (0.1 R)
• M15: 12,978,812 km (0.042 R)
• M16: 16,660,116 km (0.1 R)
• M17: 17,083,927 km (0.099 R)
• M18: 18,398,893 km (0.07 R)
• M19: 21,228,835 km (0.119 R)
• M20: 26,759,918 km (0.117 R)
• M21: 28,429,131 km (0.102 R)
• M22: 29,034,404 km (0.076 R)
• M23: 33,514,411 km (0.064 R)
• M24: 34,530,929 km (0.072 R)
• M25: 35,567,941 km (0.098 R)
• M26: 37,462,299 km (0.081 R)
• M27: 39,423,078 km (0.075 R)
• M28: 40,175,555 km (0.081 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 409 - 16,601 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit