🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.45 AU - 0.65 AU

Year: 259 Days

Day: 43.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 5.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 466.5

Radius: 14.1

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.86 AU - 1.12 AU

Year: 626 Days

Day: 6.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,915,325 km

• M1: 175,478 km (0.047 R)
• M2: 621,579 km (0.078 R)
• M3: 1,117,795 km (0.079 R)
• M4: 1,696,290 km (0.105 R)
• M5: 2,175,751 km (0.093 R)
• M6: 2,663,440 km (0.115 R)
• M7: 3,295,791 km (0.089 R)
• M8: 4,294,207 km (0.117 R)
• M9: 5,300,402 km (0.051 R)
• M10: 6,650,822 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 66.4

Radius: 14.2

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.09 AU - 1.69 AU

Year: 1042 Days

Day: 14.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 54,915,325 km

• M1: 176,675 km (0.081 R)
• M2: 680,222 km (0.101 R)
• M3: 1,323,792 km (0.028 R)
• M4: 1,788,293 km (0.078 R)
• M5: 2,739,137 km (0.114 R)
• M6: 3,346,205 km (0.087 R)
• M7: 4,452,033 km (0.035 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.6

Radius: 8.3

Gravity: 9.05 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.66 AU - 2.1 AU

Year: 1639 Days

Day: 14.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 54,915,325 km

• M1: 103,372 km (0.112 R)
• M2: 409,599 km (0.11 R)
• M3: 791,373 km (0.101 R)
• M4: 1,054,964 km (0.104 R)
• M5: 1,592,619 km (0.068 R)
• M6: 1,871,170 km (0.1 R)
• M7: 2,388,330 km (0.07 R)
• M8: 2,968,321 km (0.111 R)
• M9: 3,622,512 km (0.066 R)
• M10: 4,019,545 km (0.103 R)
• M11: 4,312,757 km (0.118 R)
• M12: 4,600,434 km (0.076 R)
• M13: 4,901,125 km (0.083 R)
• M14: 6,117,655 km (0.039 R)
• M15: 6,531,443 km (0.099 R)
• M16: 7,307,258 km (0.042 R)
• M17: 8,584,075 km (0.084 R)
• M18: 10,170,561 km (0.114 R)
• M19: 10,962,233 km (0.086 R)
• M20: 11,463,834 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 52.4

Radius: 12.1

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.94 AU - 2.57 AU

Year: 2146 Days

Day: 11.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 54,915,325 km

• M1: 150,495 km (0.09 R)
• M2: 577,448 km (0.115 R)
• M3: 1,149,061 km (0.095 R)
• M4: 1,602,642 km (0.1 R)
• M5: 2,130,274 km (0.086 R)
• M6: 2,895,018 km (0.106 R)
• M7: 3,348,300 km (0.117 R)
• M8: 3,807,565 km (0.111 R)
• M9: 4,837,846 km (0.117 R)
• M10: 5,340,195 km (0.071 R)
• M11: 6,489,705 km (0.06 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.6

Radius: 10.8

Gravity: 7.8 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.33 AU - 3.63 AU

Year: 4128 Days

Day: 14.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,915,325 km

• M1: 193,879 km (0.119 R)
• M2: 693,985 km (0.119 R)
• M3: 2,094,370 km (0.116 R)
• M4: 2,494,544 km (0.089 R)
• M5: 2,909,080 km (0.115 R)
• M6: 3,790,212 km (0.065 R)
• M7: 7,164,242 km (0.037 R)
• M8: 9,035,861 km (0.057 R)
• M9: 9,768,292 km (0.066 R)
• M10: 10,149,019 km (0.052 R)
• M11: 11,867,599 km (0.117 R)
• M12: 12,301,583 km (0.085 R)
• M13: 13,877,895 km (0.111 R)
• M14: 15,356,969 km (0.118 R)
• M15: 19,147,031 km (0.111 R)
• M16: 23,822,264 km (0.071 R)
• M17: 26,422,874 km (0.096 R)
• M18: 28,003,076 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.6

Radius: 11.6

Gravity: 7.12 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 3.39 AU - 3.95 AU

Year: 4470 Days

Day: 6.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 54,915,325 km

• M1: 144,212 km (0.08 R)
• M2: 637,437 km (0.112 R)
• M3: 1,011,880 km (0.06 R)
• M4: 1,391,859 km (0.086 R)
• M5: 1,910,365 km (0.096 R)
• M6: 2,874,224 km (0.115 R)
• M7: 3,904,355 km (0.101 R)
• M8: 4,355,093 km (0.116 R)
• M9: 4,735,371 km (0.066 R)
• M10: 5,534,224 km (0.099 R)
• M11: 6,420,591 km (0.059 R)
• M12: 8,055,247 km (0.028 R)
• M13: 9,193,088 km (0.105 R)
• M14: 11,073,384 km (0.07 R)
• M15: 13,250,033 km (0.068 R)
• M16: 15,289,800 km (0.084 R)
• M17: 16,293,901 km (0.032 R)
• M18: 17,594,355 km (0.113 R)
• M19: 19,029,747 km (0.118 R)
• M20: 19,982,835 km (0.08 R)
• M21: 21,910,703 km (0.097 R)
• M22: 25,967,647 km (0.048 R)
• M23: 30,961,523 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 578.1

Radius: 11.8

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 4.41 AU - 4.57 AU

Year: 6049 Days

Day: 12.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,915,325 km

• M1: 146,905 km (0.115 R)
• M2: 933,341 km (0.045 R)
• M3: 1,689,409 km (0.053 R)
• M4: 3,452,719 km (0.116 R)
• M5: 5,542,152 km (0.094 R)
• M6: 6,872,377 km (0.066 R)
• M7: 8,096,835 km (0.071 R)
• M8: 9,210,143 km (0.101 R)
• M9: 10,377,754 km (0.081 R)
• M10: 11,020,875 km (0.093 R)
• M11: 12,437,567 km (0.114 R)
• M12: 13,972,292 km (0.107 R)
• M13: 17,223,801 km (0.102 R)
• M14: 17,929,903 km (0.029 R)
• M15: 20,447,486 km (0.114 R)
• M16: 20,876,832 km (0.045 R)
• M17: 25,590,661 km (0.081 R)
• M18: 32,206,477 km (0.058 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 762.3

Radius: 5.1

Gravity: 29.31 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 5.75 AU - 8.13 AU

Year: 11624 Days

Day: 23.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 54,915,325 km

• M1: 74,649 km (0.109 R)
• M2: 296,653 km (0.109 R)
• M3: 812,316 km (0.027 R)
• M4: 1,293,573 km (0.094 R)
• M5: 1,946,418 km (0.113 R)
• M6: 2,144,186 km (0.051 R)
• M7: 2,355,269 km (0.032 R)
• M8: 2,517,433 km (0.113 R)
• M9: 2,819,321 km (0.081 R)
• M10: 3,049,553 km (0.12 R)
• M11: 3,495,504 km (0.114 R)
• M12: 4,897,086 km (0.071 R)
• M13: 5,831,325 km (0.106 R)
• M14: 6,716,196 km (0.042 R)
• M15: 7,425,590 km (0.08 R)
• M16: 8,229,678 km (0.034 R)
• M17: 8,652,741 km (0.074 R)
• M18: 8,894,042 km (0.1 R)
• M19: 9,139,682 km (0.091 R)
• M20: 9,747,947 km (0.057 R)
• M21: 14,442,478 km (0.106 R)
• M22: 15,406,935 km (0.082 R)
• M23: 16,858,034 km (0.11 R)
• M24: 17,158,876 km (0.07 R)
• M25: 18,161,182 km (0.085 R)
• M26: 18,636,753 km (0.064 R)
• M27: 20,113,284 km (0.081 R)
• M28: 23,019,372 km (0.112 R)
• M29: 23,669,973 km (0.08 R)
• M30: 24,332,692 km (0.073 R)
• M31: 28,147,587 km (0.117 R)
• M32: 29,106,211 km (0.027 R)
• M33: 30,307,033 km (0.087 R)
• M34: 33,041,083 km (0.064 R)
• M35: 43,055,165 km (0.12 R)
• M36: 45,913,980 km (0.118 R)
• M37: 49,201,992 km (0.102 R)
• M38: 54,750,876 km (0.106 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: 502 - 15,968 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit