🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.19

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.55 AU - 0.75 AU

Year: 344 Days

Day: 27.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 29.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 265.2

Radius: 14.1

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.64 AU - 0.76 AU

Year: 384 Days

Day: 8 Hours

Environment

Temp: -140 °C

Axial Tilt: 144.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 7,997,123 km

• M1: 176,226 km (0.086 R)
• M2: 713,133 km (0.104 R)
• M3: 1,172,099 km (0.081 R)
• M4: 1,773,034 km (0.036 R)
• M5: 2,341,655 km (0.108 R)
• M6: 2,864,949 km (0.068 R)
• M7: 3,476,804 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 325.2

Radius: 12.9

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.67 AU - 0.79 AU

Year: 409 Days

Day: 14.5 Hours

Environment

Temp: -131 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 7,997,123 km

• M1: 160,519 km (0.081 R)
• M2: 705,055 km (0.113 R)
• M3: 1,108,071 km (0.076 R)
• M4: 1,578,557 km (0.107 R)
• M5: 2,160,193 km (0.11 R)
• M6: 3,066,906 km (0.101 R)
• M7: 3,841,225 km (0.089 R)
• M8: 4,350,755 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.1

Radius: 9.3

Gravity: 10.66 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.69 AU - 0.93 AU

Year: 478 Days

Day: 13.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 7,997,123 km

• M1: 115,639 km (0.03 R)
• M2: 430,243 km (0.109 R)
• M3: 719,865 km (0.092 R)
• M4: 1,124,976 km (0.057 R)
• M5: 1,453,643 km (0.06 R)
• M6: 1,797,867 km (0.07 R)
• M7: 2,281,368 km (0.111 R)
• M8: 2,728,815 km (0.085 R)
• M9: 3,332,442 km (0.073 R)
• M10: 3,966,139 km (0.072 R)
• M11: 4,282,538 km (0.088 R)
• M12: 5,774,927 km (0.119 R)
• M13: 6,182,581 km (0.043 R)
• M14: 6,789,499 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 850.4

Radius: 11.4

Gravity: 6.54 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.88 AU - 1.28 AU

Year: 736 Days

Day: 7.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 7,997,123 km

• M1: 141,819 km (0.108 R)
• M2: 582,085 km (0.074 R)
• M3: 953,537 km (0.059 R)
• M4: 1,316,461 km (0.108 R)
• M5: 1,861,895 km (0.049 R)
• M6: 2,668,078 km (0.09 R)
• M7: 3,158,161 km (0.086 R)
• M8: 3,854,988 km (0.112 R)
• M9: 5,017,513 km (0.061 R)
• M10: 5,748,747 km (0.086 R)
• M11: 6,337,415 km (0.038 R)
• M12: 7,683,197 km (0.115 R)
• M13: 8,221,749 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.3

Radius: 13.3

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.19 AU - 1.47 AU

Year: 1006 Days

Day: 5 Hours

Environment

Temp: -169 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 7,997,123 km

• M1: 165,455 km (0.069 R)
• M2: 590,912 km (0.098 R)
• M3: 1,293,274 km (0.109 R)
• M4: 1,981,424 km (0.11 R)
• M5: 2,540,471 km (0.105 R)
• M6: 3,346,804 km (0.088 R)
• M7: 3,787,070 km (0.081 R)
• M8: 4,231,675 km (0.071 R)
• M9: 5,070,620 km (0.117 R)
• M10: 5,738,574 km (0.118 R)
• M11: 6,533,687 km (0.08 R)
• M12: 7,054,886 km (0.067 R)
• M13: 7,888,894 km (0.039 R)
• M14: 8,958,070 km (0.057 R)
• M15: 9,542,848 km (0.049 R)
• M16: 10,691,760 km (0.048 R)
• M17: 11,283,120 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 494.8

Radius: 13

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.34 AU - 1.52 AU

Year: 1122 Days

Day: 5.6 Hours

Environment

Temp: -173 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 7,997,123 km

• M1: 161,715 km (0.097 R)
• M2: 613,202 km (0.072 R)
• M3: 1,119,590 km (0.11 R)
• M4: 1,643,482 km (0.12 R)
• M5: 2,062,207 km (0.105 R)
• M6: 2,576,075 km (0.062 R)
• M7: 3,242,683 km (0.12 R)
• M8: 3,774,205 km (0.1 R)
• M9: 4,602,528 km (0.04 R)
• M10: 5,014,072 km (0.097 R)
• M11: 5,450,449 km (0.11 R)
• M12: 5,932,752 km (0.118 R)
• M13: 6,914,563 km (0.114 R)
• M14: 7,925,845 km (0.074 R)
• M15: 8,626,561 km (0.068 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.4

Radius: 12.3

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.17 AU - 1.91 AU

Year: 1254 Days

Day: 11.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 7,997,123 km

• M1: 153,188 km (0.087 R)
• M2: 550,221 km (0.056 R)
• M3: 972,536 km (0.105 R)
• M4: 1,675,496 km (0.104 R)
• M5: 2,218,985 km (0.088 R)
• M6: 2,630,379 km (0.085 R)
• M7: 3,383,455 km (0.119 R)
• M8: 4,244,989 km (0.107 R)
• M9: 5,354,108 km (0.119 R)
• M10: 6,564,803 km (0.087 R)
• M11: 7,490,665 km (0.072 R)
• M12: 7,997,053 km (0.025 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 488 - 13,127 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit