🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.42

Radius: 1.64

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.51 AU - 0.61 AU

Year: 271 Days

Day: 23.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 91,405,206 km

• M1: 44,281 km (0.083 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.7

Radius: 12.1

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.72 AU - 0.8 AU

Year: 428 Days

Day: 8.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 91,405,206 km

• M1: 150,495 km (0.1 R)
• M2: 539,899 km (0.069 R)
• M3: 936,483 km (0.103 R)
• M4: 1,560,605 km (0.107 R)
• M5: 2,841,612 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.7

Radius: 10.7

Gravity: 7.35 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.61 AU - 1.01 AU

Year: 471 Days

Day: 10.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 91,405,206 km

• M1: 133,142 km (0.104 R)
• M2: 498,759 km (0.094 R)
• M3: 836,102 km (0.12 R)
• M4: 1,412,952 km (0.094 R)
• M5: 1,934,600 km (0.116 R)
• M6: 2,269,400 km (0.066 R)
• M7: 2,967,423 km (0.114 R)
• M8: 3,355,031 km (0.039 R)
• M9: 3,776,449 km (0.106 R)
• M10: 4,175,875 km (0.086 R)
• M11: 5,224,556 km (0.096 R)
• M12: 6,421,339 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 425.7

Radius: 10.5

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.23 AU - 2.67 AU

Year: 2476 Days

Day: 14.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 91,405,206 km

• M1: 130,898 km (0.114 R)
• M2: 477,965 km (0.074 R)
• M3: 1,241,363 km (0.092 R)
• M4: 1,749,547 km (0.083 R)
• M5: 2,393,117 km (0.116 R)
• M6: 3,416,367 km (0.071 R)
• M7: 3,779,889 km (0.063 R)
• M8: 5,161,127 km (0.111 R)
• M9: 5,524,649 km (0.093 R)
• M10: 7,098,269 km (0.1 R)
• M11: 8,727,689 km (0.057 R)
• M12: 10,060,158 km (0.096 R)
• M13: 13,165,959 km (0.069 R)
• M14: 14,822,606 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120

Radius: 13.2

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 2.88 AU - 2.96 AU

Year: 3222 Days

Day: 14.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 91,405,206 km

• M1: 165,306 km (0.113 R)
• M2: 774,019 km (0.108 R)
• M3: 1,375,104 km (0.113 R)
• M4: 2,189,066 km (0.065 R)
• M5: 2,604,050 km (0.068 R)
• M6: 6,702,284 km (0.094 R)
• M7: 7,175,013 km (0.089 R)
• M8: 8,441,209 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.5

Radius: 13

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 2.63 AU - 3.25 AU

Year: 3255 Days

Day: 13 Hours

Environment

Temp: -196 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 91,405,206 km

• M1: 163,361 km (0.117 R)
• M2: 710,291 km (0.105 R)
• M3: 1,237,623 km (0.104 R)
• M4: 1,835,267 km (0.105 R)
• M5: 2,511,748 km (0.085 R)
• M6: 3,444,790 km (0.089 R)
• M7: 4,013,412 km (0.05 R)
• M8: 6,574,078 km (0.092 R)
• M9: 8,769,577 km (0.082 R)
• M10: 9,599,695 km (0.075 R)
• M11: 10,195,095 km (0.103 R)
• M12: 11,070,093 km (0.065 R)
• M13: 12,360,075 km (0.078 R)
• M14: 16,269,666 km (0.072 R)
• M15: 16,888,403 km (0.12 R)
• M16: 18,473,841 km (0.093 R)
• M17: 19,085,696 km (0.108 R)
• M18: 23,467,717 km (0.119 R)
• M19: 23,896,614 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.8

Radius: 9.3

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 4.24 AU - 5.8 AU

Year: 7262 Days

Day: 8.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 91,405,206 km

• M1: 115,789 km (0.046 R)
• M2: 743,651 km (0.074 R)
• M3: 1,134,550 km (0.118 R)
• M4: 1,816,567 km (0.074 R)
• M5: 2,157,500 km (0.066 R)
• M6: 2,604,349 km (0.111 R)
• M7: 3,624,008 km (0.114 R)
• M8: 3,932,330 km (0.096 R)
• M9: 5,293,371 km (0.112 R)
• M10: 5,637,147 km (0.095 R)
• M11: 6,081,004 km (0.119 R)
• M12: 7,357,522 km (0.034 R)
• M13: 7,820,229 km (0.082 R)
• M14: 8,197,365 km (0.086 R)
• M15: 8,988,289 km (0.096 R)
• M16: 9,711,445 km (0.103 R)
• M17: 10,889,379 km (0.117 R)
• M18: 12,949,192 km (0.112 R)
• M19: 15,362,355 km (0.072 R)
• M20: 16,562,579 km (0.072 R)
• M21: 18,358,501 km (0.088 R)
• M22: 19,148,827 km (0.085 R)
• M23: 19,709,220 km (0.103 R)
• M24: 21,257,109 km (0.056 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 223.5

Radius: 3.2

Gravity: 21.83 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 7.59 AU - 8.81 AU

Year: 15161 Days

Day: 19.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 91,405,206 km

• M1: 40,092 km (0.084 R)
• M2: 167,101 km (0.102 R)
• M3: 333,603 km (0.092 R)
• M4: 671,844 km (0.039 R)
• M5: 1,492,388 km (0.07 R)
• M6: 1,719,927 km (0.119 R)
• M7: 2,261,621 km (0.106 R)
• M8: 2,408,526 km (0.088 R)
• M9: 4,732,379 km (0.117 R)
• M10: 6,299,866 km (0.103 R)
• M11: 9,204,907 km (0.094 R)
• M12: 9,964,415 km (0.104 R)
• M13: 16,279,839 km (0.063 R)
• M14: 23,767,511 km (0.104 R)
• M15: 25,370,602 km (0.106 R)
• M16: 38,294,661 km (0.113 R)
• M17: 41,874,838 km (0.088 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 798.1

Radius: 4.5

Gravity: 39.41 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 9.36 AU - 13.16 AU

Year: 24396 Days

Day: 19.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 69.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 91,405,206 km

• M1: 56,099 km (0.066 R)
• M2: 238,758 km (0.113 R)
• M3: 481,406 km (0.088 R)
• M4: 2,777,284 km (0.039 R)
• M5: 6,351,776 km (0.115 R)
• M6: 7,627,098 km (0.072 R)
• M7: 9,540,155 km (0.094 R)
• M8: 12,533,459 km (0.096 R)
• M9: 18,157,292 km (0.044 R)
• M10: 18,438,237 km (0.093 R)
• M11: 20,184,642 km (0.032 R)
• M12: 23,225,369 km (0.081 R)
• M13: 28,150,131 km (0.078 R)
• M14: 28,400,557 km (0.1 R)
• M15: 37,980,655 km (0.083 R)
• M16: 42,085,771 km (0.114 R)
• M17: 42,249,281 km (0.086 R)
• M18: 46,826,826 km (0.118 R)
• M19: 51,536,766 km (0.093 R)
• M20: 61,252,848 km (0.103 R)
• M21: 64,237,475 km (0.113 R)
• M22: 67,094,495 km (0.08 R)
• M23: 71,188,540 km (0.105 R)
• M24: 71,420,716 km (0.109 R)
• M25: 73,296,524 km (0.11 R)
• M26: 81,128,720 km (0.075 R)
• M27: 91,131,432 km (0.078 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 523 - 11,479 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit