🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.73 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 600.2

Radius: 12.4

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 1.37 AU - 1.55 AU

Year: 1157 Days

Day: 8.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 69,279,383 km

• M1: 157,975 km (0.118 R)
• M2: 236,963 km (0.115 R)
• M3: 324,029 km (0.107 R)
• M4: 434,582 km (0.04 R)
• M5: 617,390 km (0.07 R)
• M6: 734,825 km (0.108 R)
• M7: 867,368 km (0.083 R)
• M8: 994,826 km (0.101 R)
• M9: 1,121,834 km (0.058 R)
• M10: 1,262,307 km (0.111 R)
• M11: 1,432,549 km (0.117 R)
• M12: 1,883,587 km (0.089 R)
• M13: 2,034,681 km (0.084 R)
• M14: 2,171,413 km (0.105 R)
• M15: 2,292,438 km (0.052 R)
• M16: 2,396,857 km (0.118 R)
• M17: 2,512,496 km (0.07 R)
• M18: 2,659,701 km (0.054 R)
• M19: 2,809,897 km (0.102 R)
• M20: 2,983,580 km (0.119 R)
• M21: 3,203,190 km (0.12 R)
• M22: 3,288,311 km (0.037 R)
• M23: 3,504,480 km (0.094 R)
• M24: 3,647,495 km (0.091 R)
• M25: 3,747,576 km (0.101 R)
• M26: 3,950,730 km (0.085 R)
• M27: 4,042,284 km (0.038 R)
• M28: 4,134,436 km (0.097 R)
• M29: 4,368,108 km (0.048 R)
• M30: 5,033,071 km (0.089 R)
• M31: 5,396,594 km (0.06 R)
• M32: 5,485,604 km (0.108 R)
• M33: 5,951,302 km (0.117 R)
• M34: 6,308,991 km (0.115 R)
• M35: 6,389,325 km (0.117 R)
• M36: 6,605,644 km (0.066 R)
• M37: 6,783,067 km (0.065 R)
• M38: 6,920,697 km (0.051 R)
• M39: 7,184,737 km (0.069 R)
• M40: 7,339,272 km (0.082 R)
• M41: 7,494,704 km (0.108 R)
• M42: 7,651,333 km (0.098 R)
• M43: 7,837,881 km (0.055 R)
• M44: 8,733,224 km (0.087 R)
• M45: 8,853,052 km (0.056 R)
• M46: 9,124,722 km (0.101 R)
• M47: 9,231,236 km (0.108 R)
• M48: 9,491,387 km (0.094 R)
• M49: 9,784,898 km (0.073 R)
• M50: 9,925,071 km (0.072 R)
• M51: 10,428,767 km (0.102 R)
• M52: 10,540,068 km (0.095 R)
• M53: 10,651,817 km (0.11 R)
• M54: 10,763,866 km (0.072 R)
• M55: 10,876,364 km (0.066 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.4

Radius: 9.1

Gravity: 9.18 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.36 AU - 1.58 AU

Year: 1169 Days

Day: 12 Hours

Environment

Temp: -184 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 69,279,383 km

• M1: 130,599 km (0.065 R)
• M2: 229,184 km (0.119 R)
• M3: 316,998 km (0.102 R)
• M4: 420,071 km (0.073 R)
• M5: 496,067 km (0.118 R)
• M6: 595,699 km (0.066 R)
• M7: 689,646 km (0.088 R)
• M8: 1,025,793 km (0.118 R)
• M9: 1,086,679 km (0.101 R)
• M10: 1,228,199 km (0.065 R)
• M11: 1,309,580 km (0.102 R)
• M12: 1,376,001 km (0.114 R)
• M13: 1,743,862 km (0.04 R)
• M14: 1,873,265 km (0.039 R)
• M15: 1,958,236 km (0.092 R)
• M16: 2,025,256 km (0.114 R)
• M17: 2,102,748 km (0.111 R)
• M18: 2,270,896 km (0.034 R)
• M19: 2,443,382 km (0.112 R)
• M20: 2,567,847 km (0.086 R)
• M21: 2,910,127 km (0.094 R)
• M22: 3,020,082 km (0.093 R)
• M23: 3,153,822 km (0.063 R)
• M24: 3,221,441 km (0.099 R)
• M25: 3,323,915 km (0.12 R)
• M26: 3,473,812 km (0.03 R)
• M27: 3,532,006 km (0.061 R)
• M28: 3,602,317 km (0.074 R)
• M29: 3,973,170 km (0.08 R)
• M30: 4,034,206 km (0.091 R)
• M31: 4,394,138 km (0.091 R)
• M32: 4,764,393 km (0.089 R)
• M33: 4,842,184 km (0.032 R)
• M34: 4,946,753 km (0.059 R)
• M35: 5,144,671 km (0.108 R)
• M36: 5,291,576 km (0.105 R)
• M37: 5,412,750 km (0.118 R)
• M38: 5,657,941 km (0.034 R)
• M39: 6,060,808 km (0.099 R)
• M40: 6,215,941 km (0.118 R)
• M41: 6,272,788 km (0.08 R)
• M42: 6,429,716 km (0.091 R)
• M43: 6,544,757 km (0.119 R)
• M44: 6,733,101 km (0.116 R)
• M45: 6,820,616 km (0.109 R)
• M46: 7,264,173 km (0.112 R)
• M47: 7,338,972 km (0.078 R)
• M48: 7,414,070 km (0.084 R)
• M49: 7,580,124 km (0.109 R)
• M50: 7,686,488 km (0.026 R)
• M51: 7,839,228 km (0.09 R)
• M52: 7,993,164 km (0.029 R)
• M53: 8,054,948 km (0.037 R)
• M54: 8,808,921 km (0.083 R)
• M55: 8,872,799 km (0.095 R)
• M56: 9,162,122 km (0.081 R)
• M57: 9,275,517 km (0.117 R)
• M58: 9,373,055 km (0.073 R)
• M59: 9,438,279 km (0.107 R)
• M60: 9,601,939 km (0.045 R)
• M61: 9,998,673 km (0.039 R)
• M62: 10,569,838 km (0.069 R)
• M63: 10,773,889 km (0.058 R)
• M64: 10,876,513 km (0.073 R)
• M65: 11,013,694 km (0.111 R)
• M66: 11,134,270 km (0.047 R)
• M67: 11,376,768 km (0.061 R)
• M68: 11,498,691 km (0.12 R)
• M69: 11,603,559 km (0.115 R)
• M70: 11,849,348 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.2

Radius: 9.6

Gravity: 4.28 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 1.51 AU - 1.53 AU

Year: 1229 Days

Day: 5.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 71.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 69,279,383 km

• M1: 121,922 km (0.041 R)
• M2: 241,601 km (0.075 R)
• M3: 307,573 km (0.093 R)
• M4: 413,638 km (0.077 R)
• M5: 524,191 km (0.087 R)
• M6: 657,034 km (0.098 R)
• M7: 778,059 km (0.08 R)
• M8: 869,313 km (0.104 R)
• M9: 1,049,878 km (0.073 R)
• M10: 1,124,228 km (0.082 R)
• M11: 1,300,305 km (0.034 R)
• M12: 1,417,889 km (0.068 R)
• M13: 1,500,766 km (0.099 R)
• M14: 1,640,191 km (0.107 R)
• M15: 1,743,563 km (0.118 R)
• M16: 1,915,302 km (0.032 R)
• M17: 2,118,455 km (0.107 R)
• M18: 2,364,544 km (0.096 R)
• M19: 2,436,650 km (0.053 R)
• M20: 2,647,882 km (0.034 R)
• M21: 2,913,269 km (0.085 R)
• M22: 3,019,932 km (0.118 R)
• M23: 3,088,448 km (0.109 R)
• M24: 3,267,068 km (0.084 R)
• M25: 3,327,505 km (0.049 R)
• M26: 3,388,242 km (0.041 R)
• M27: 3,624,457 km (0.091 R)
• M28: 3,728,877 km (0.048 R)
• M29: 4,298,994 km (0.114 R)
• M30: 4,420,767 km (0.11 R)
• M31: 4,532,516 km (0.036 R)
• M32: 4,942,564 km (0.108 R)
• M33: 5,070,171 km (0.11 R)
• M34: 5,423,970 km (0.083 R)
• M35: 5,724,961 km (0.113 R)
• M36: 6,093,420 km (0.088 R)
• M37: 6,193,053 km (0.049 R)
• M38: 6,520,373 km (0.069 R)
• M39: 6,609,533 km (0.053 R)
• M40: 6,673,411 km (0.088 R)
• M41: 6,840,512 km (0.109 R)
• M42: 6,944,034 km (0.073 R)
• M43: 7,022,124 km (0.099 R)
• M44: 7,113,379 km (0.027 R)
• M45: 7,231,561 km (0.117 R)
• M46: 7,323,713 km (0.086 R)
• M47: 7,603,013 km (0.103 R)
• M48: 7,764,129 km (0.09 R)
• M49: 8,171,933 km (0.107 R)
• M50: 8,323,177 km (0.118 R)
• M51: 8,433,730 km (0.109 R)
• M52: 8,503,143 km (0.097 R)
• M53: 8,782,592 km (0.119 R)
• M54: 8,923,513 km (0.112 R)
• M55: 8,994,123 km (0.089 R)
• M56: 9,079,244 km (0.106 R)
• M57: 9,250,384 km (0.102 R)
• M58: 9,465,656 km (0.09 R)
• M59: 9,711,595 km (0.104 R)
• M60: 9,784,299 km (0.1 R)
• M61: 9,857,303 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.2

Radius: 8.5

Gravity: 13.57 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.89 AU - 2.45 AU

Year: 2097 Days

Day: 9.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 69,279,383 km

• M1: 106,364 km (0.098 R)
• M2: 305,030 km (0.09 R)
• M3: 363,672 km (0.094 R)
• M4: 502,948 km (0.078 R)
• M5: 617,540 km (0.032 R)
• M6: 723,306 km (0.067 R)
• M7: 913,594 km (0.115 R)
• M8: 994,377 km (0.031 R)
• M9: 1,067,082 km (0.1 R)
• M10: 1,434,644 km (0.067 R)
• M11: 1,750,893 km (0.119 R)
• M12: 2,129,226 km (0.096 R)
• M13: 2,210,608 km (0.039 R)
• M14: 2,518,480 km (0.117 R)
• M15: 2,662,842 km (0.069 R)
• M16: 2,721,484 km (0.103 R)
• M17: 2,780,426 km (0.025 R)
• M18: 3,143,500 km (0.1 R)
• M19: 3,362,362 km (0.05 R)
• M20: 3,473,663 km (0.055 R)
• M21: 3,553,847 km (0.032 R)
• M22: 3,634,779 km (0.048 R)
• M23: 3,997,853 km (0.077 R)
• M24: 4,132,940 km (0.107 R)
• M25: 4,235,116 km (0.099 R)
• M26: 4,723,403 km (0.093 R)
• M27: 4,866,120 km (0.109 R)
• M28: 4,938,076 km (0.105 R)
• M29: 5,211,092 km (0.065 R)
• M30: 5,470,345 km (0.049 R)
• M31: 5,695,939 km (0.036 R)
• M32: 5,828,931 km (0.119 R)
• M33: 5,905,526 km (0.044 R)
• M34: 5,963,121 km (0.045 R)
• M35: 6,040,164 km (0.042 R)
• M36: 6,117,506 km (0.088 R)
• M37: 6,292,834 km (0.093 R)
• M38: 6,351,776 km (0.098 R)
• M39: 7,153,621 km (0.036 R)
• M40: 7,359,168 km (0.079 R)
• M41: 7,629,192 km (0.089 R)
• M42: 8,415,479 km (0.092 R)
• M43: 8,523,787 km (0.083 R)
• M44: 8,873,248 km (0.079 R)
• M45: 9,205,206 km (0.095 R)
• M46: 9,406,265 km (0.107 R)
• M47: 9,496,174 km (0.049 R)
• M48: 9,563,792 km (0.064 R)
• M49: 10,110,273 km (0.031 R)
• M50: 10,643,440 km (0.1 R)
• M51: 11,257,240 km (0.074 R)
• M52: 11,424,341 km (0.103 R)
• M53: 11,520,233 km (0.056 R)
• M54: 11,640,510 km (0.055 R)
• M55: 11,785,470 km (0.07 R)
• M56: 12,125,955 km (0.108 R)
• M57: 12,297,244 km (0.086 R)
• M58: 12,370,996 km (0.069 R)
• M59: 12,568,316 km (0.07 R)
• M60: 12,741,849 km (0.1 R)
• M61: 13,091,160 km (0.092 R)
• M62: 13,443,762 km (0.119 R)
• M63: 13,799,356 km (0.102 R)
• M64: 13,952,694 km (0.028 R)
• M65: 14,183,973 km (0.114 R)
• M66: 14,649,970 km (0.068 R)
• M67: 14,858,809 km (0.026 R)
• M68: 15,016,036 km (0.118 R)
• M69: 15,464,530 km (0.091 R)
• M70: 15,597,224 km (0.108 R)
• M71: 16,132,036 km (0.088 R)
• M72: 16,212,669 km (0.119 R)
• M73: 17,027,529 km (0.106 R)
• M74: 17,109,658 km (0.074 R)
• M75: 17,384,619 km (0.075 R)
• M76: 17,661,076 km (0.093 R)
• M77: 17,855,553 km (0.112 R)
• M78: 18,471,148 km (0.099 R)
• M79: 18,838,112 km (0.052 R)
• M80: 18,894,809 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.9

Radius: 14.6

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.2 AU - 4.84 AU

Year: 5287 Days

Day: 8.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 69,279,383 km

• M1: 282,890 km (0.118 R)
• M2: 599,439 km (0.049 R)
• M3: 759,060 km (0.1 R)
• M4: 851,810 km (0.119 R)
• M5: 1,141,282 km (0.06 R)
• M6: 1,330,673 km (0.097 R)
• M7: 1,600,548 km (0.092 R)
• M8: 1,814,921 km (0.119 R)
• M9: 2,001,171 km (0.119 R)
• M10: 2,154,808 km (0.058 R)
• M11: 2,312,633 km (0.093 R)
• M12: 2,454,003 km (0.118 R)
• M13: 2,661,197 km (0.081 R)
• M14: 2,961,140 km (0.104 R)
• M15: 3,617,576 km (0.061 R)
• M16: 4,519,800 km (0.054 R)
• M17: 4,647,108 km (0.042 R)
• M18: 4,879,135 km (0.103 R)
• M19: 5,036,063 km (0.081 R)
• M20: 5,168,008 km (0.115 R)
• M21: 5,516,721 km (0.057 R)
• M22: 5,928,863 km (0.107 R)
• M23: 6,841,260 km (0.069 R)
• M24: 7,046,808 km (0.115 R)
• M25: 7,284,220 km (0.05 R)
• M26: 7,675,717 km (0.108 R)
• M27: 7,981,495 km (0.088 R)
• M28: 8,385,260 km (0.104 R)
• M29: 8,573,753 km (0.09 R)
• M30: 8,795,607 km (0.118 R)
• M31: 8,891,349 km (0.092 R)
• M32: 9,148,059 km (0.093 R)
• M33: 9,505,150 km (0.093 R)
• M34: 10,266,752 km (0.09 R)
• M35: 10,367,581 km (0.062 R)
• M36: 10,570,137 km (0.107 R)
• M37: 10,774,039 km (0.098 R)
• M38: 11,324,260 km (0.076 R)
• M39: 11,532,949 km (0.084 R)
• M40: 12,131,191 km (0.091 R)
• M41: 12,344,816 km (0.063 R)
• M42: 13,578,700 km (0.071 R)
• M43: 14,435,746 km (0.111 R)
• M44: 14,737,933 km (0.075 R)
• M45: 15,387,039 km (0.104 R)
• M46: 15,850,942 km (0.102 R)
• M47: 15,967,628 km (0.032 R)
• M48: 16,319,482 km (0.065 R)
• M49: 16,673,879 km (0.078 R)
• M50: 16,792,511 km (0.117 R)
• M51: 19,308,148 km (0.109 R)
• M52: 19,432,763 km (0.081 R)
• M53: 20,186,587 km (0.097 R)
• M54: 20,524,678 km (0.107 R)
• M55: 20,992,620 km (0.115 R)
• M56: 21,120,826 km (0.113 R)
• M57: 21,507,237 km (0.036 R)
• M58: 22,811,731 km (0.1 R)
• M59: 23,164,033 km (0.088 R)
• M60: 24,231,414 km (0.101 R)
• M61: 24,500,840 km (0.043 R)
• M62: 24,952,027 km (0.097 R)
• M63: 25,725,299 km (0.03 R)
• M64: 25,908,406 km (0.099 R)
• M65: 26,229,892 km (0.096 R)
• M66: 26,322,045 km (0.111 R)
• M67: 26,876,903 km (0.05 R)
• M68: 27,016,179 km (0.098 R)
• M69: 27,202,278 km (0.101 R)
• M70: 27,482,326 km (0.059 R)
• M71: 27,763,270 km (0.093 R)
• M72: 28,706,784 km (0.099 R)
• M73: 29,948,895 km (0.097 R)
• M74: 30,189,897 km (0.116 R)
• M75: 30,722,167 km (0.103 R)
• M76: 31,013,733 km (0.03 R)
• M77: 31,111,121 km (0.083 R)
• M78: 31,452,952 km (0.036 R)
• M79: 32,288,157 km (0.058 R)
• M80: 32,485,626 km (0.094 R)
• M81: 33,180,359 km (0.075 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 942.2

Radius: 7.3

Gravity: 17.68 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 7.75 AU - 8.23 AU

Year: 14816 Days

Day: 21 Hours

Environment

Temp: -221 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 69,279,383 km

• M1: 108,309 km (0.113 R)
• M2: 205,398 km (0.104 R)
• M3: 286,480 km (0.093 R)
• M4: 347,965 km (0.057 R)
• M5: 543,788 km (0.094 R)
• M6: 887,714 km (0.052 R)
• M7: 1,032,375 km (0.119 R)
• M8: 2,213,450 km (0.05 R)
• M9: 2,684,085 km (0.101 R)
• M10: 3,222,189 km (0.063 R)
• M11: 5,374,603 km (0.114 R)
• M12: 6,232,846 km (0.076 R)
• M13: 6,940,294 km (0.077 R)
• M14: 7,327,902 km (0.052 R)
• M15: 7,573,691 km (0.109 R)
• M16: 7,722,541 km (0.03 R)
• M17: 7,972,819 km (0.104 R)
• M18: 8,635,836 km (0.112 R)
• M19: 8,687,448 km (0.095 R)
• M20: 9,210,591 km (0.11 R)
• M21: 9,797,613 km (0.07 R)
• M22: 10,232,345 km (0.082 R)
• M23: 10,562,358 km (0.094 R)
• M24: 11,346,101 km (0.041 R)
• M25: 11,745,078 km (0.116 R)
• M26: 11,802,374 km (0.057 R)
• M27: 12,090,650 km (0.077 R)
• M28: 12,674,081 km (0.094 R)
• M29: 12,850,756 km (0.09 R)
• M30: 13,147,259 km (0.119 R)
• M31: 14,663,434 km (0.111 R)
• M32: 14,911,168 km (0.104 R)
• M33: 15,662,598 km (0.111 R)
• M34: 16,234,062 km (0.063 R)
• M35: 16,362,118 km (0.087 R)
• M36: 16,812,557 km (0.097 R)
• M37: 17,332,409 km (0.102 R)
• M38: 17,594,206 km (0.092 R)
• M39: 18,923,233 km (0.112 R)
• M40: 19,125,489 km (0.102 R)
• M41: 20,491,318 km (0.102 R)
• M42: 20,698,810 km (0.106 R)
• M43: 20,907,050 km (0.09 R)
• M44: 21,395,787 km (0.045 R)
• M45: 23,895,118 km (0.113 R)
• M46: 23,967,972 km (0.089 R)
• M47: 25,512,870 km (0.066 R)
• M48: 26,786,845 km (0.101 R)
• M49: 27,622,349 km (0.083 R)
• M50: 28,081,615 km (0.047 R)
• M51: 32,811,151 km (0.11 R)
• M52: 34,195,231 km (0.046 R)
• M53: 35,101,046 km (0.037 R)
• M54: 36,348,842 km (0.101 R)
• M55: 38,802,247 km (0.112 R)
• M56: 38,973,387 km (0.111 R)
• M57: 39,746,658 km (0.106 R)
• M58: 39,832,976 km (0.097 R)
• M59: 43,067,282 km (0.081 R)
• M60: 44,581,512 km (0.119 R)
• M61: 45,480,296 km (0.072 R)
• M62: 46,022,439 km (0.107 R)
• M63: 47,844,989 km (0.068 R)
• M64: 48,672,714 km (0.083 R)
• M65: 49,412,625 km (0.11 R)
• M66: 49,505,376 km (0.068 R)
• M67: 50,062,927 km (0.089 R)
• M68: 52,408,921 km (0.099 R)
• M69: 53,167,083 km (0.072 R)
• M70: 53,357,222 km (0.062 R)
• M71: 53,642,804 km (0.109 R)
• M72: 53,928,985 km (0.085 R)
• M73: 55,656,242 km (0.112 R)
• M74: 57,206,824 km (0.114 R)
• M75: 57,987,575 km (0.114 R)
• M76: 58,673,482 km (0.115 R)
• M77: 59,855,604 km (0.047 R)
• M78: 62,644,258 km (0.028 R)
• M79: 62,744,638 km (0.053 R)
• M80: 62,845,168 km (0.089 R)
• M81: 64,459,329 km (0.105 R)
• M82: 65,576,975 km (0.058 R)
• M83: 65,882,902 km (0.102 R)
• M84: 67,111,400 km (0.119 R)
• M85: 67,625,568 km (0.11 R)
• M86: 67,934,637 km (0.052 R)
• M87: 68,761,165 km (0.106 R)
• M88: 69,175,551 km (0.108 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 15,638 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit