🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.56 AU - 0.78 AU

Year: 360 Days

Day: 44.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.8

Radius: 9.4

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.73 AU - 0.97 AU

Year: 514 Days

Day: 7.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,962,202 km

• M1: 116,836 km (0.111 R)
• M2: 539,300 km (0.072 R)
• M3: 908,657 km (0.063 R)
• M4: 1,247,197 km (0.099 R)
• M5: 1,552,826 km (0.093 R)
• M6: 2,004,462 km (0.116 R)
• M7: 2,551,840 km (0.035 R)
• M8: 3,074,236 km (0.095 R)
• M9: 4,586,521 km (0.102 R)
• M10: 4,925,211 km (0.102 R)
• M11: 5,587,181 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148.5

Radius: 11.8

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.85 AU - 0.93 AU

Year: 551 Days

Day: 6.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,962,202 km

• M1: 147,055 km (0.098 R)
• M2: 575,054 km (0.098 R)
• M3: 968,497 km (0.12 R)
• M4: 1,586,186 km (0.1 R)
• M5: 2,129,675 km (0.084 R)
• M6: 2,513,394 km (0.119 R)
• M7: 3,309,105 km (0.06 R)
• M8: 4,037,198 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.9

Radius: 13

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.86 AU - 1.12 AU

Year: 646 Days

Day: 12.3 Hours

Environment

Temp: -163 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 50,962,202 km

• M1: 161,715 km (0.083 R)
• M2: 734,077 km (0.098 R)
• M3: 1,195,586 km (0.066 R)
• M4: 1,831,527 km (0.11 R)
• M5: 2,333,128 km (0.086 R)
• M6: 3,451,522 km (0.117 R)
• M7: 3,997,405 km (0.114 R)
• M8: 4,493,322 km (0.115 R)
• M9: 4,916,235 km (0.099 R)
• M10: 5,716,583 km (0.103 R)
• M11: 6,233,594 km (0.053 R)
• M12: 6,822,112 km (0.058 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.5

Radius: 12.4

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.46 AU - 2.4 AU

Year: 1759 Days

Day: 5.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 50,962,202 km

• M1: 156,180 km (0.075 R)
• M2: 554,559 km (0.085 R)
• M3: 1,023,848 km (0.107 R)
• M4: 2,699,045 km (0.067 R)
• M5: 3,232,511 km (0.104 R)
• M6: 4,266,382 km (0.113 R)
• M7: 5,918,391 km (0.041 R)
• M8: 6,901,698 km (0.117 R)
• M9: 7,542,276 km (0.037 R)
• M10: 8,309,863 km (0.11 R)
• M11: 11,069,943 km (0.079 R)
• M12: 11,540,279 km (0.034 R)
• M13: 11,986,230 km (0.053 R)
• M14: 12,405,254 km (0.114 R)
• M15: 13,071,862 km (0.117 R)
• M16: 13,679,828 km (0.12 R)
• M17: 14,264,157 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.3

Radius: 8.8

Gravity: 8.93 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 2.68 AU - 3.8 AU

Year: 3826 Days

Day: 9 Hours

Environment

Temp: -200 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 50,962,202 km

• M1: 120,127 km (0.065 R)
• M2: 408,402 km (0.096 R)
• M3: 920,775 km (0.073 R)
• M4: 1,219,223 km (0.106 R)
• M5: 1,640,789 km (0.078 R)
• M6: 2,171,862 km (0.113 R)
• M7: 3,225,330 km (0.12 R)
• M8: 3,781,086 km (0.103 R)
• M9: 4,683,909 km (0.034 R)
• M10: 5,370,414 km (0.083 R)
• M11: 6,974,103 km (0.115 R)
• M12: 8,578,839 km (0.082 R)
• M13: 12,407,049 km (0.086 R)
• M14: 13,172,392 km (0.101 R)
• M15: 17,596,898 km (0.074 R)
• M16: 20,012,156 km (0.076 R)
• M17: 21,130,998 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.9

Radius: 11.5

Gravity: 6.22 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 3.54 AU - 4.04 AU

Year: 4840 Days

Day: 8.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 50,962,202 km

• M1: 143,614 km (0.102 R)
• M2: 637,437 km (0.118 R)
• M3: 1,101,788 km (0.115 R)
• M4: 1,565,691 km (0.09 R)
• M5: 2,394,164 km (0.085 R)
• M6: 3,147,090 km (0.115 R)
• M7: 4,414,035 km (0.094 R)
• M8: 5,232,784 km (0.09 R)
• M9: 7,487,673 km (0.051 R)
• M10: 8,611,901 km (0.092 R)
• M11: 10,237,581 km (0.091 R)
• M12: 11,911,730 km (0.113 R)
• M13: 13,229,388 km (0.103 R)
• M14: 14,142,085 km (0.093 R)
• M15: 14,924,781 km (0.094 R)
• M16: 15,973,313 km (0.09 R)
• M17: 16,333,544 km (0.106 R)
• M18: 18,216,832 km (0.116 R)
• M19: 19,076,421 km (0.084 R)
• M20: 20,662,907 km (0.119 R)
• M21: 21,162,863 km (0.113 R)
• M22: 22,261,210 km (0.054 R)
• M23: 24,491,864 km (0.049 R)
• M24: 25,538,750 km (0.109 R)
• M25: 27,377,906 km (0.037 R)
• M26: 31,131,616 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136

Radius: 14.1

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 5.1 AU - 5.36 AU

Year: 7846 Days

Day: 8.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 50,962,202 km

• M1: 175,478 km (0.108 R)
• M2: 1,031,627 km (0.081 R)
• M3: 1,709,305 km (0.041 R)
• M4: 2,312,783 km (0.107 R)
• M5: 2,970,415 km (0.083 R)
• M6: 3,976,760 km (0.089 R)
• M7: 4,734,922 km (0.041 R)
• M8: 5,199,573 km (0.09 R)
• M9: 5,721,670 km (0.045 R)
• M10: 6,164,330 km (0.111 R)
• M11: 7,898,618 km (0.11 R)
• M12: 10,057,465 km (0.107 R)
• M13: 10,622,795 km (0.091 R)
• M14: 12,219,752 km (0.043 R)
• M15: 13,579,448 km (0.053 R)
• M16: 15,404,841 km (0.038 R)
• M17: 15,993,957 km (0.075 R)
• M18: 18,803,106 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 613.8

Radius: 5.8

Gravity: 18.25 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 6.55 AU - 7.01 AU

Year: 11581 Days

Day: 20.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 50,962,202 km

• M1: 74,949 km (0.053 R)
• M2: 613,950 km (0.06 R)
• M3: 811,419 km (0.025 R)
• M4: 1,051,673 km (0.043 R)
• M5: 1,405,322 km (0.082 R)
• M6: 2,216,891 km (0.074 R)
• M7: 2,691,864 km (0.105 R)
• M8: 4,377,682 km (0.084 R)
• M9: 5,630,116 km (0.053 R)
• M10: 6,059,312 km (0.042 R)
• M11: 8,264,834 km (0.088 R)
• M12: 10,684,130 km (0.087 R)
• M13: 13,855,156 km (0.071 R)
• M14: 17,082,431 km (0.035 R)
• M15: 18,286,245 km (0.1 R)
• M16: 18,673,704 km (0.067 R)
• M17: 27,117,157 km (0.034 R)
• M18: 33,008,920 km (0.063 R)
• M19: 48,263,265 km (0.073 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 296 - 18,756 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit