🌌 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: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.42 AU - 0.64 AU

Year: 253 Days

Day: 15.3 Hours

Environment

Temp: -125 °C

Axial Tilt: 7.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 19,719,030 km

• M1: 340,335 km (0.095 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.53 AU - 0.53 AU

Year: 253 Days

Day: 19.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 26 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.1

Radius: 14.4

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.79 AU - 0.81 AU

Year: 469 Days

Day: 8.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 19,719,030 km

• M1: 179,218 km (0.105 R)
• M2: 674,387 km (0.119 R)
• M3: 1,215,333 km (0.113 R)
• M4: 1,700,329 km (0.1 R)
• M5: 2,220,182 km (0.102 R)
• M6: 2,795,386 km (0.041 R)
• M7: 3,505,527 km (0.098 R)
• M8: 4,735,521 km (0.057 R)
• M9: 5,193,888 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.3

Radius: 14.5

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.91 AU - 0.93 AU

Year: 579 Days

Day: 13.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 19,719,030 km

• M1: 180,415 km (0.053 R)
• M2: 1,173,595 km (0.103 R)
• M3: 1,637,049 km (0.084 R)
• M4: 2,235,591 km (0.101 R)
• M5: 2,754,097 km (0.118 R)
• M6: 3,303,121 km (0.082 R)
• M7: 4,038,544 km (0.062 R)
• M8: 4,608,961 km (0.025 R)
• M9: 6,006,654 km (0.114 R)
• M10: 7,212,861 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.3

Radius: 8.3

Gravity: 11.05 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.27 AU - 1.69 AU

Year: 1181 Days

Day: 14.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 19,719,030 km

• M1: 103,223 km (0.094 R)
• M2: 423,212 km (0.041 R)
• M3: 748,289 km (0.085 R)
• M4: 1,019,210 km (0.104 R)
• M5: 1,454,989 km (0.078 R)
• M6: 2,021,366 km (0.076 R)
• M7: 2,586,697 km (0.11 R)
• M8: 2,859,414 km (0.116 R)
• M9: 3,525,274 km (0.052 R)
• M10: 4,290,617 km (0.067 R)
• M11: 4,827,374 km (0.091 R)
• M12: 5,835,065 km (0.068 R)
• M13: 6,192,753 km (0.115 R)
• M14: 7,051,296 km (0.074 R)
• M15: 9,061,891 km (0.069 R)
• M16: 10,262,414 km (0.101 R)
• M17: 11,635,423 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.6

Radius: 11.6

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.43 AU - 1.71 AU

Year: 1291 Days

Day: 14 Hours

Environment

Temp: -186 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 19,719,030 km

• M1: 144,212 km (0.102 R)
• M2: 525,986 km (0.066 R)
• M3: 975,677 km (0.112 R)
• M4: 1,385,276 km (0.052 R)
• M5: 1,822,252 km (0.059 R)
• M6: 2,197,294 km (0.058 R)
• M7: 2,739,885 km (0.075 R)
• M8: 3,648,842 km (0.09 R)
• M9: 4,018,797 km (0.06 R)
• M10: 4,782,943 km (0.077 R)
• M11: 5,356,950 km (0.104 R)
• M12: 6,262,167 km (0.039 R)
• M13: 6,883,596 km (0.057 R)
• M14: 7,807,662 km (0.057 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.8

Radius: 13.1

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 2.13 AU - 2.41 AU

Year: 2244 Days

Day: 8.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 19,719,030 km

• M1: 162,912 km (0.107 R)
• M2: 633,248 km (0.105 R)
• M3: 1,266,496 km (0.098 R)
• M4: 1,707,959 km (0.073 R)
• M5: 2,279,423 km (0.09 R)
• M6: 2,763,970 km (0.11 R)
• M7: 3,300,727 km (0.117 R)
• M8: 3,794,251 km (0.055 R)
• M9: 4,713,380 km (0.067 R)
• M10: 5,295,465 km (0.084 R)
• M11: 7,511,459 km (0.093 R)
• M12: 9,058,749 km (0.088 R)
• M13: 9,961,573 km (0.088 R)
• M14: 11,625,101 km (0.055 R)
• M15: 12,946,499 km (0.11 R)
• M16: 13,511,081 km (0.075 R)
• M17: 14,550,039 km (0.11 R)
• M18: 14,971,007 km (0.111 R)
• M19: 15,935,315 km (0.058 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.5

Radius: 13.2

Gravity: 0.7 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 2.14 AU - 3.04 AU

Year: 2734 Days

Day: 11.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 19,719,030 km

• M1: 166,353 km (0.075 R)
• M2: 1,169,556 km (0.087 R)
• M3: 1,621,342 km (0.034 R)
• M4: 2,065,348 km (0.087 R)
• M5: 2,867,941 km (0.084 R)
• M6: 3,695,516 km (0.089 R)
• M7: 5,803,649 km (0.082 R)
• M8: 6,329,336 km (0.041 R)
• M9: 7,251,458 km (0.113 R)
• M10: 8,261,393 km (0.045 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627

Radius: 12

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 2.91 AU - 4.69 AU

Year: 4859 Days

Day: 5 Hours

Environment

Temp: -218 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 19,719,030 km

• M1: 150,047 km (0.117 R)
• M2: 554,859 km (0.1 R)
• M3: 937,380 km (0.118 R)
• M4: 1,484,460 km (0.1 R)
• M5: 2,952,912 km (0.108 R)
• M6: 3,413,973 km (0.11 R)
• M7: 3,945,345 km (0.11 R)
• M8: 5,147,962 km (0.09 R)
• M9: 5,907,770 km (0.103 R)
• M10: 6,708,866 km (0.051 R)
• M11: 7,203,137 km (0.093 R)
• M12: 11,698,553 km (0.115 R)
• M13: 12,661,814 km (0.08 R)
• M14: 15,927,685 km (0.117 R)
• M15: 21,150,446 km (0.115 R)
• M16: 22,360,394 km (0.111 R)
• M17: 26,673,151 km (0.045 R)

Asteroid Belt

Center: 5 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 10 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.5

Radius: 3.6

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 5.62 AU - 6.78 AU

Year: 10127 Days

Day: 20.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 19,719,030 km

• M1: 47,123 km (0.059 R)
• M2: 254,316 km (0.104 R)
• M3: 462,856 km (0.117 R)
• M4: 619,634 km (0.061 R)
• M5: 985,850 km (0.095 R)
• M6: 2,035,728 km (0.111 R)
• M7: 2,445,476 km (0.101 R)
• M8: 2,623,947 km (0.112 R)
• M9: 3,023,822 km (0.113 R)
• M10: 3,943,400 km (0.059 R)
• M11: 4,733,725 km (0.072 R)
• M12: 5,202,266 km (0.079 R)
• M13: 5,624,282 km (0.106 R)
• M14: 6,095,515 km (0.115 R)
• M15: 6,396,207 km (0.095 R)
• M16: 7,206,129 km (0.061 R)
• M17: 8,681,314 km (0.116 R)
• M18: 11,172,717 km (0.1 R)
• M19: 19,425,433 km (0.095 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: 269 - 11,217 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit