🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.59 AU - 0.61 AU

Year: 300 Days

Day: 43.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 31.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.3

Radius: 9.3

Gravity: 8.89 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.77 AU - 1.09 AU

Year: 579 Days

Day: 7.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,009,310 km

• M1: 115,639 km (0.107 R)
• M2: 537,954 km (0.053 R)
• M3: 902,524 km (0.095 R)
• M4: 1,384,379 km (0.077 R)
• M5: 2,255,337 km (0.047 R)
• M6: 3,151,429 km (0.081 R)
• M7: 4,193,378 km (0.068 R)
• M8: 4,672,390 km (0.112 R)
• M9: 5,101,886 km (0.115 R)
• M10: 5,450,000 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.7

Radius: 12.4

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.08 AU - 1.18 AU

Year: 776 Days

Day: 14.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 38,009,310 km

• M1: 154,235 km (0.056 R)
• M2: 635,342 km (0.059 R)
• M3: 1,022,501 km (0.118 R)
• M4: 1,639,892 km (0.108 R)
• M5: 2,508,008 km (0.11 R)
• M6: 2,940,197 km (0.1 R)
• M7: 3,340,670 km (0.106 R)
• M8: 3,792,605 km (0.072 R)
• M9: 4,366,163 km (0.089 R)
• M10: 4,803,288 km (0.076 R)
• M11: 5,362,784 km (0.087 R)
• M12: 5,766,100 km (0.081 R)
• M13: 6,231,350 km (0.108 R)
• M14: 6,765,414 km (0.107 R)
• M15: 7,707,432 km (0.1 R)
• M16: 8,501,946 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.6

Radius: 10.2

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.24 AU - 1.28 AU

Year: 913 Days

Day: 10.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,009,310 km

• M1: 127,158 km (0.105 R)
• M2: 468,391 km (0.053 R)
• M3: 838,795 km (0.114 R)
• M4: 1,157,439 km (0.098 R)
• M5: 1,567,038 km (0.069 R)
• M6: 2,091,827 km (0.109 R)
• M7: 2,422,588 km (0.088 R)
• M8: 2,835,328 km (0.114 R)
• M9: 3,861,570 km (0.056 R)
• M10: 5,013,623 km (0.072 R)
• M11: 6,238,082 km (0.093 R)
• M12: 7,040,674 km (0.039 R)
• M13: 7,535,843 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128

Radius: 11.6

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.56 AU - 1.6 AU

Year: 1282 Days

Day: 8.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 38,009,310 km

• M1: 144,212 km (0.09 R)
• M2: 587,620 km (0.117 R)
• M3: 1,206,956 km (0.118 R)
• M4: 1,875,209 km (0.052 R)
• M5: 2,261,770 km (0.119 R)
• M6: 3,046,411 km (0.074 R)
• M7: 3,599,175 km (0.06 R)
• M8: 4,591,757 km (0.113 R)
• M9: 4,971,436 km (0.087 R)
• M10: 5,355,005 km (0.1 R)
• M11: 5,812,326 km (0.054 R)
• M12: 6,846,347 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 599.3

Radius: 10.6

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 2.26 AU - 2.64 AU

Year: 2476 Days

Day: 12.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,009,310 km

• M1: 134,937 km (0.092 R)
• M2: 565,031 km (0.068 R)
• M3: 1,713,195 km (0.114 R)
• M4: 2,091,677 km (0.105 R)
• M5: 2,849,091 km (0.067 R)
• M6: 3,706,138 km (0.042 R)
• M7: 4,512,919 km (0.065 R)
• M8: 4,858,191 km (0.116 R)
• M9: 5,577,607 km (0.095 R)
• M10: 6,208,312 km (0.046 R)
• M11: 7,084,207 km (0.102 R)
• M12: 7,642,058 km (0.066 R)
• M13: 9,148,508 km (0.086 R)
• M14: 9,633,355 km (0.079 R)
• M15: 9,990,146 km (0.029 R)
• M16: 10,467,064 km (0.103 R)
• M17: 11,585,906 km (0.075 R)
• M18: 13,699,425 km (0.081 R)
• M19: 14,473,295 km (0.05 R)
• M20: 16,257,997 km (0.119 R)
• M21: 17,438,773 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 653.3

Radius: 10.4

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 4.02 AU - 5.72 AU

Year: 6939 Days

Day: 14.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 38,009,310 km

• M1: 269,276 km (0.079 R)
• M2: 822,938 km (0.104 R)
• M3: 1,980,825 km (0.092 R)
• M4: 3,225,928 km (0.099 R)
• M5: 3,716,310 km (0.084 R)
• M6: 4,875,395 km (0.107 R)
• M7: 6,882,400 km (0.119 R)
• M8: 10,966,721 km (0.03 R)
• M9: 12,769,525 km (0.105 R)
• M10: 13,543,245 km (0.029 R)
• M11: 15,800,826 km (0.107 R)
• M12: 16,498,700 km (0.058 R)
• M13: 17,283,192 km (0.085 R)
• M14: 19,932,271 km (0.09 R)
• M15: 20,448,234 km (0.089 R)
• M16: 30,059,149 km (0.115 R)
• M17: 30,445,710 km (0.054 R)
• M18: 31,426,773 km (0.071 R)
• M19: 35,133,509 km (0.102 R)
• M20: 36,540,626 km (0.083 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 131.4

Radius: 4.5

Gravity: 6.49 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 7.66 AU - 9.68 AU

Year: 16483 Days

Day: 24.1 Hours

Environment

Temp: -237 °C

Axial Tilt: 158.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 38,009,310 km

• M1: 56,847 km (0.082 R)
• M2: 368,759 km (0.076 R)
• M3: 839,693 km (0.031 R)
• M4: 1,556,566 km (0.036 R)
• M5: 1,959,882 km (0.086 R)
• M6: 2,169,468 km (0.046 R)
• M7: 2,950,668 km (0.109 R)
• M8: 3,292,500 km (0.059 R)
• M9: 4,184,103 km (0.096 R)
• M10: 4,957,973 km (0.109 R)
• M11: 6,054,076 km (0.112 R)
• M12: 8,210,679 km (0.09 R)
• M13: 8,501,348 km (0.102 R)
• M14: 15,412,769 km (0.058 R)
• M15: 15,664,543 km (0.093 R)
• M16: 15,983,037 km (0.104 R)
• M17: 20,074,688 km (0.089 R)
• M18: 22,159,933 km (0.106 R)
• M19: 23,461,434 km (0.035 R)
• M20: 24,215,557 km (0.099 R)
• M21: 29,757,260 km (0.065 R)
• M22: 33,184,996 km (0.047 R)
• M23: 34,993,635 km (0.049 R)
• M24: 37,999,355 km (0.074 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 68.4

Radius: 3

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 10.26 AU - 10.98 AU

Year: 22346 Days

Day: 17.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,009,310 km

• M1: 43,982 km (0.095 R)
• M2: 409,449 km (0.087 R)
• M3: 1,316,910 km (0.031 R)
• M4: 1,764,956 km (0.075 R)
• M5: 5,754,731 km (0.086 R)
• M6: 9,759,915 km (0.026 R)
• M7: 12,674,829 km (0.103 R)
• M8: 15,612,333 km (0.094 R)
• M9: 17,987,798 km (0.093 R)
• M10: 19,261,025 km (0.106 R)
• M11: 24,528,216 km (0.09 R)
• M12: 30,090,415 km (0.061 R)
• M13: 32,799,632 km (0.101 R)
• M14: 36,105,446 km (0.06 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 255 - 13,383 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit