🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.48 AU - 0.68 AU

Year: 285 Days

Day: 33.6 Hours

Environment

Temp: -131 °C

Axial Tilt: 13.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37.3

Radius: 13.1

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.88 AU - 1.06 AU

Year: 617 Days

Day: 8.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 29,221,084 km

• M1: 168,746 km (0.11 R)
• M2: 660,624 km (0.106 R)
• M3: 1,241,812 km (0.117 R)
• M4: 2,625,592 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.5

Radius: 13.4

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.89 AU - 1.11 AU

Year: 646 Days

Day: 14.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 44.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 29,221,084 km

• M1: 166,652 km (0.073 R)
• M2: 596,148 km (0.098 R)
• M3: 1,028,485 km (0.11 R)
• M4: 1,529,040 km (0.049 R)
• M5: 1,988,156 km (0.037 R)
• M6: 2,465,822 km (0.082 R)
• M7: 2,972,210 km (0.107 R)
• M8: 4,976,672 km (0.075 R)
• M9: 6,203,375 km (0.074 R)
• M10: 7,083,459 km (0.087 R)
• M11: 7,668,985 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.6

Radius: 8.8

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.86 AU - 1.14 AU

Year: 646 Days

Day: 11.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,221,084 km

• M1: 109,506 km (0.083 R)
• M2: 399,726 km (0.099 R)
• M3: 722,259 km (0.036 R)
• M4: 1,034,020 km (0.067 R)
• M5: 1,430,156 km (0.094 R)
• M6: 1,754,185 km (0.045 R)
• M7: 2,100,205 km (0.096 R)
• M8: 2,808,251 km (0.079 R)
• M9: 3,800,983 km (0.029 R)
• M10: 4,266,681 km (0.034 R)
• M11: 4,551,665 km (0.056 R)
• M12: 6,061,107 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.1

Radius: 12.9

Gravity: 5.44 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.07 AU - 1.31 AU

Year: 838 Days

Day: 6.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,221,084 km

• M1: 160,519 km (0.118 R)
• M2: 571,015 km (0.102 R)
• M3: 1,305,391 km (0.091 R)
• M4: 1,738,776 km (0.045 R)
• M5: 2,186,074 km (0.117 R)
• M6: 2,984,627 km (0.109 R)
• M7: 4,342,677 km (0.097 R)
• M8: 4,757,063 km (0.079 R)
• M9: 5,160,379 km (0.046 R)
• M10: 6,099,255 km (0.081 R)
• M11: 8,263,637 km (0.067 R)
• M12: 9,208,048 km (0.091 R)
• M13: 9,808,534 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.8

Radius: 13.8

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.22 AU - 2.9 AU

Year: 2645 Days

Day: 11.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 29,221,084 km

• M1: 173,384 km (0.11 R)
• M2: 626,815 km (0.081 R)
• M3: 1,137,841 km (0.089 R)
• M4: 1,807,142 km (0.088 R)
• M5: 2,438,445 km (0.082 R)
• M6: 2,917,308 km (0.06 R)
• M7: 3,477,403 km (0.096 R)
• M8: 4,088,659 km (0.107 R)
• M9: 4,528,028 km (0.1 R)
• M10: 5,187,306 km (0.115 R)
• M11: 7,193,264 km (0.085 R)
• M12: 7,869,446 km (0.051 R)
• M13: 8,387,504 km (0.113 R)
• M14: 9,709,799 km (0.059 R)
• M15: 10,306,545 km (0.104 R)
• M16: 13,075,901 km (0.108 R)
• M17: 14,704,723 km (0.108 R)
• M18: 16,939,416 km (0.112 R)
• M19: 18,361,942 km (0.038 R)
• M20: 18,815,223 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746.1

Radius: 13.5

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 2.64 AU - 3.46 AU

Year: 3439 Days

Day: 8.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 29,221,084 km

• M1: 169,046 km (0.097 R)
• M2: 736,171 km (0.115 R)
• M3: 1,216,380 km (0.089 R)
• M4: 1,638,396 km (0.108 R)
• M5: 2,174,255 km (0.077 R)
• M6: 3,191,072 km (0.072 R)
• M7: 3,911,536 km (0.03 R)
• M8: 4,458,166 km (0.1 R)
• M9: 5,080,344 km (0.052 R)
• M10: 6,381,995 km (0.102 R)
• M11: 7,528,812 km (0.099 R)
• M12: 7,997,203 km (0.089 R)
• M13: 9,103,928 km (0.088 R)
• M14: 9,752,884 km (0.099 R)
• M15: 10,473,497 km (0.089 R)
• M16: 11,753,157 km (0.087 R)
• M17: 12,523,287 km (0.068 R)
• M18: 14,724,769 km (0.109 R)
• M19: 15,459,444 km (0.102 R)
• M20: 19,945,585 km (0.1 R)
• M21: 20,715,266 km (0.068 R)
• M22: 24,065,211 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.8

Radius: 9

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 3.7 AU - 4.18 AU

Year: 5050 Days

Day: 9.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 29,221,084 km

• M1: 111,899 km (0.041 R)
• M2: 404,213 km (0.104 R)
• M3: 701,016 km (0.112 R)
• M4: 1,098,348 km (0.067 R)
• M5: 1,497,325 km (0.066 R)
• M6: 3,175,963 km (0.084 R)
• M7: 3,973,469 km (0.117 R)
• M8: 4,824,531 km (0.095 R)
• M9: 6,046,148 km (0.098 R)
• M10: 8,107,756 km (0.069 R)
• M11: 8,789,623 km (0.028 R)
• M12: 11,065,754 km (0.081 R)
• M13: 12,455,818 km (0.038 R)
• M14: 12,975,970 km (0.096 R)
• M15: 13,461,415 km (0.03 R)
• M16: 15,470,963 km (0.089 R)
• M17: 16,406,548 km (0.091 R)
• M18: 17,555,011 km (0.054 R)
• M19: 18,879,251 km (0.105 R)
• M20: 20,528,717 km (0.093 R)
• M21: 24,550,507 km (0.058 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.1

Radius: 9.9

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.61 AU - 4.57 AU

Year: 5341 Days

Day: 7.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 29,221,084 km

• M1: 123,119 km (0.093 R)
• M2: 1,226,852 km (0.12 R)
• M3: 2,325,499 km (0.095 R)
• M4: 2,670,023 km (0.103 R)
• M5: 3,463,340 km (0.109 R)
• M6: 3,826,265 km (0.082 R)
• M7: 4,214,471 km (0.062 R)
• M8: 5,233,233 km (0.109 R)
• M9: 8,262,590 km (0.076 R)
• M10: 8,913,939 km (0.045 R)
• M11: 9,232,133 km (0.099 R)
• M12: 10,103,691 km (0.078 R)
• M13: 10,537,674 km (0.072 R)
• M14: 11,165,835 km (0.077 R)
• M15: 11,582,914 km (0.115 R)
• M16: 12,946,948 km (0.107 R)
• M17: 13,459,171 km (0.054 R)
• M18: 15,644,347 km (0.103 R)
• M19: 16,881,521 km (0.116 R)
• M20: 17,555,011 km (0.115 R)
• M21: 18,182,724 km (0.09 R)
• M22: 22,560,406 km (0.071 R)
• M23: 23,528,304 km (0.096 R)
• M24: 25,546,679 km (0.084 R)
• M25: 26,680,032 km (0.093 R)
• M26: 28,700,501 km (0.104 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 275 - 19,377 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit