🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 560.5

Radius: 11.8

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.04 AU - 1.46 AU

Year: 889 Days

Day: 10.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 73,211,948 km

• M1: 209,287 km (0.035 R)
• M2: 299,046 km (0.081 R)
• M3: 475,871 km (0.101 R)
• M4: 591,959 km (0.055 R)
• M5: 719,267 km (0.096 R)
• M6: 795,113 km (0.084 R)
• M7: 891,304 km (0.119 R)
• M8: 1,071,420 km (0.117 R)
• M9: 1,270,834 km (0.104 R)
• M10: 1,406,070 km (0.085 R)
• M11: 1,482,664 km (0.093 R)
• M12: 1,582,297 km (0.062 R)
• M13: 1,676,992 km (0.111 R)
• M14: 1,796,222 km (0.04 R)
• M15: 1,957,189 km (0.092 R)
• M16: 2,051,286 km (0.117 R)
• M17: 2,147,029 km (0.049 R)
• M18: 2,277,179 km (0.057 R)
• M19: 2,351,529 km (0.11 R)
• M20: 2,451,909 km (0.097 R)
• M21: 2,753,349 km (0.112 R)
• M22: 2,976,100 km (0.03 R)
• M23: 3,130,934 km (0.112 R)
• M24: 3,297,885 km (0.12 R)
• M25: 3,391,982 km (0.075 R)
• M26: 3,505,976 km (0.091 R)
• M27: 3,631,040 km (0.1 R)
• M28: 3,728,278 km (0.09 R)
• M29: 4,035,403 km (0.105 R)
• M30: 4,186,945 km (0.118 R)
• M31: 4,423,011 km (0.093 R)
• M32: 4,506,187 km (0.082 R)
• M33: 4,674,185 km (0.099 R)
• M34: 4,854,900 km (0.08 R)
• M35: 4,973,082 km (0.12 R)
• M36: 5,124,924 km (0.091 R)
• M37: 5,289,332 km (0.084 R)
• M38: 5,366,674 km (0.086 R)
• M39: 5,466,605 km (0.072 R)
• M40: 5,544,845 km (0.077 R)
• M41: 5,691,002 km (0.094 R)
• M42: 5,770,289 km (0.088 R)
• M43: 5,872,764 km (0.083 R)
• M44: 6,068,138 km (0.082 R)
• M45: 6,160,740 km (0.096 R)
• M46: 6,335,769 km (0.092 R)
• M47: 6,417,898 km (0.097 R)
• M48: 6,607,289 km (0.107 R)
• M49: 6,798,475 km (0.075 R)
• M50: 6,930,869 km (0.1 R)
• M51: 7,432,471 km (0.107 R)
• M52: 7,519,238 km (0.086 R)
• M53: 7,643,853 km (0.117 R)
• M54: 7,857,329 km (0.112 R)
• M55: 7,958,308 km (0.093 R)
• M56: 8,509,426 km (0.091 R)
• M57: 8,887,909 km (0.078 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.2

Radius: 10.1

Gravity: 8.88 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1.74 AU - 2.28 AU

Year: 1812 Days

Day: 12.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 73,211,948 km

• M1: 126,111 km (0.073 R)
• M2: 225,893 km (0.117 R)
• M3: 290,519 km (0.096 R)
• M4: 365,318 km (0.114 R)
• M5: 518,207 km (0.041 R)
• M6: 654,491 km (0.079 R)
• M7: 769,232 km (0.082 R)
• M8: 873,502 km (0.115 R)
• M9: 1,146,069 km (0.083 R)
• M10: 1,318,556 km (0.078 R)
• M11: 1,402,630 km (0.032 R)
• M12: 1,532,481 km (0.104 R)
• M13: 1,621,342 km (0.115 R)
• M14: 1,746,406 km (0.102 R)
• M15: 1,816,118 km (0.077 R)
• M16: 2,030,641 km (0.109 R)
• M17: 2,116,511 km (0.08 R)
• M18: 2,228,559 km (0.068 R)
• M19: 2,355,418 km (0.107 R)
• M20: 2,497,836 km (0.077 R)
• M21: 2,603,302 km (0.102 R)
• M22: 2,873,476 km (0.075 R)
• M23: 2,984,178 km (0.109 R)
• M24: 3,068,103 km (0.117 R)
• M25: 3,543,824 km (0.087 R)
• M26: 3,662,754 km (0.079 R)
• M27: 4,027,474 km (0.072 R)
• M28: 4,104,966 km (0.067 R)
• M29: 4,182,906 km (0.11 R)
• M30: 4,612,551 km (0.077 R)
• M31: 4,726,246 km (0.081 R)
• M32: 4,791,769 km (0.06 R)
• M33: 5,006,442 km (0.087 R)
• M34: 5,207,502 km (0.03 R)
• M35: 5,292,025 km (0.098 R)
• M36: 5,428,308 km (0.102 R)
• M37: 5,600,196 km (0.097 R)
• M38: 5,914,352 km (0.078 R)
• M39: 6,288,047 km (0.098 R)
• M40: 6,487,012 km (0.101 R)
• M41: 6,633,020 km (0.103 R)
• M42: 7,002,676 km (0.07 R)
• M43: 8,014,556 km (0.094 R)
• M44: 8,171,335 km (0.101 R)
• M45: 8,368,654 km (0.072 R)
• M46: 8,507,781 km (0.119 R)
• M47: 8,990,533 km (0.103 R)
• M48: 9,689,604 km (0.061 R)
• M49: 10,024,703 km (0.053 R)
• M50: 10,214,842 km (0.102 R)
• M51: 10,321,056 km (0.067 R)
• M52: 10,491,747 km (0.119 R)
• M53: 10,641,794 km (0.077 R)
• M54: 11,009,207 km (0.058 R)
• M55: 11,161,796 km (0.102 R)
• M56: 11,358,817 km (0.07 R)
• M57: 11,468,921 km (0.077 R)
• M58: 11,645,745 km (0.09 R)
• M59: 11,934,918 km (0.052 R)
• M60: 12,294,103 km (0.104 R)
• M61: 12,839,536 km (0.107 R)
• M62: 13,092,207 km (0.115 R)
• M63: 13,462,612 km (0.095 R)
• M64: 13,836,606 km (0.113 R)
• M65: 13,977,677 km (0.062 R)
• M66: 14,048,437 km (0.108 R)
• M67: 14,380,095 km (0.09 R)
• M68: 16,101,668 km (0.119 R)
• M69: 16,175,868 km (0.077 R)
• M70: 16,498,551 km (0.054 R)
• M71: 16,573,350 km (0.106 R)
• M72: 16,723,247 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684

Radius: 12.7

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.69 AU - 2.41 AU

Year: 1866 Days

Day: 10.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 73,211,948 km

• M1: 238,459 km (0.111 R)
• M2: 341,532 km (0.097 R)
• M3: 420,520 km (0.054 R)
• M4: 501,901 km (0.115 R)
• M5: 583,132 km (0.05 R)
• M6: 707,598 km (0.069 R)
• M7: 858,841 km (0.076 R)
• M8: 1,075,758 km (0.095 R)
• M9: 1,390,363 km (0.057 R)
• M10: 1,745,209 km (0.054 R)
• M11: 1,911,113 km (0.087 R)
• M12: 1,990,400 km (0.081 R)
• M13: 2,391,472 km (0.072 R)
• M14: 2,626,939 km (0.095 R)
• M15: 2,922,245 km (0.103 R)
• M16: 3,040,726 km (0.064 R)
• M17: 3,814,596 km (0.12 R)
• M18: 4,032,111 km (0.084 R)
• M19: 4,120,225 km (0.084 R)
• M20: 4,570,813 km (0.053 R)
• M21: 4,911,448 km (0.103 R)
• M22: 5,132,404 km (0.034 R)
• M23: 5,292,473 km (0.071 R)
• M24: 5,372,957 km (0.1 R)
• M25: 5,650,162 km (0.117 R)
• M26: 5,915,399 km (0.114 R)
• M27: 6,440,936 km (0.064 R)
• M28: 6,596,219 km (0.113 R)
• M29: 6,770,500 km (0.033 R)
• M30: 6,875,668 km (0.113 R)
• M31: 7,194,760 km (0.077 R)
• M32: 7,609,445 km (0.115 R)
• M33: 7,828,905 km (0.054 R)
• M34: 8,032,059 km (0.102 R)
• M35: 8,311,807 km (0.104 R)
• M36: 8,689,841 km (0.114 R)
• M37: 9,073,560 km (0.101 R)
• M38: 9,384,574 km (0.089 R)
• M39: 9,482,411 km (0.093 R)
• M40: 9,600,443 km (0.102 R)
• M41: 9,699,028 km (0.095 R)
• M42: 10,097,108 km (0.085 R)
• M43: 10,724,821 km (0.046 R)
• M44: 10,991,704 km (0.118 R)
• M45: 11,532,350 km (0.104 R)
• M46: 11,805,965 km (0.073 R)
• M47: 12,295,150 km (0.085 R)
• M48: 12,423,954 km (0.051 R)
• M49: 13,030,723 km (0.117 R)
• M50: 13,140,079 km (0.086 R)
• M51: 13,315,706 km (0.118 R)
• M52: 13,403,820 km (0.097 R)
• M53: 13,514,223 km (0.092 R)
• M54: 13,713,637 km (0.119 R)
• M55: 14,003,557 km (0.09 R)
• M56: 14,250,544 km (0.059 R)
• M57: 14,430,959 km (0.086 R)
• M58: 14,794,182 km (0.029 R)
• M59: 15,068,694 km (0.1 R)
• M60: 15,460,342 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.5

Radius: 10.8

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.82 AU - 2.38 AU

Year: 1935 Days

Day: 8.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 73,211,948 km

• M1: 243,994 km (0.037 R)
• M2: 324,627 km (0.038 R)
• M3: 619,186 km (0.041 R)
• M4: 776,712 km (0.032 R)
• M5: 912,846 km (0.115 R)
• M6: 1,161,627 km (0.076 R)
• M7: 1,259,464 km (0.1 R)
• M8: 1,380,639 km (0.116 R)
• M9: 1,495,231 km (0.092 R)
• M10: 1,745,658 km (0.062 R)
• M11: 1,836,015 km (0.074 R)
• M12: 2,164,831 km (0.086 R)
• M13: 2,336,420 km (0.064 R)
• M14: 2,576,524 km (0.109 R)
• M15: 2,838,021 km (0.082 R)
• M16: 2,945,133 km (0.106 R)
• M17: 3,543,824 km (0.087 R)
• M18: 3,761,638 km (0.092 R)
• M19: 3,998,751 km (0.083 R)
• M20: 4,394,587 km (0.041 R)
• M21: 4,550,318 km (0.103 R)
• M22: 4,628,857 km (0.079 R)
• M23: 4,707,845 km (0.043 R)
• M24: 4,947,501 km (0.118 R)
• M25: 5,339,447 km (0.112 R)
• M26: 5,639,989 km (0.116 R)
• M27: 5,724,512 km (0.12 R)
• M28: 5,809,484 km (0.075 R)
• M29: 5,997,678 km (0.115 R)
• M30: 6,663,837 km (0.072 R)
• M31: 6,753,147 km (0.097 R)
• M32: 6,987,567 km (0.111 R)
• M33: 7,114,875 km (0.055 R)
• M34: 7,482,885 km (0.095 R)
• M35: 7,762,933 km (0.078 R)
• M36: 8,256,606 km (0.082 R)
• M37: 8,410,542 km (0.1 R)
• M38: 8,526,779 km (0.071 R)
• M39: 8,604,421 km (0.072 R)
• M40: 8,858,588 km (0.091 R)
• M41: 8,976,770 km (0.093 R)
• M42: 9,234,677 km (0.11 R)
• M43: 9,474,781 km (0.114 R)
• M44: 9,575,461 km (0.119 R)
• M45: 10,145,877 km (0.09 R)
• M46: 10,269,595 km (0.117 R)
• M47: 10,435,349 km (0.116 R)
• M48: 10,539,320 km (0.104 R)
• M49: 10,664,533 km (0.049 R)
• M50: 10,769,401 km (0.11 R)
• M51: 10,895,512 km (0.088 R)
• M52: 11,128,137 km (0.095 R)
• M53: 11,341,164 km (0.095 R)
• M54: 11,448,127 km (0.097 R)
• M55: 11,749,417 km (0.064 R)
• M56: 12,009,717 km (0.114 R)
• M57: 12,140,615 km (0.109 R)
• M58: 12,381,917 km (0.106 R)
• M59: 12,580,433 km (0.114 R)
• M60: 12,757,856 km (0.06 R)
• M61: 13,475,627 km (0.115 R)
• M62: 13,543,544 km (0.072 R)
• M63: 13,702,567 km (0.119 R)
• M64: 13,816,560 km (0.116 R)
• M65: 14,530,441 km (0.075 R)
• M66: 14,739,878 km (0.08 R)
• M67: 15,232,504 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.6

Radius: 9.5

Gravity: 9.44 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 3.4 AU - 5.3 AU

Year: 5769 Days

Day: 12.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 73,211,948 km

• M1: 127,158 km (0.094 R)
• M2: 234,270 km (0.09 R)
• M3: 424,559 km (0.104 R)
• M4: 492,476 km (0.096 R)
• M5: 552,465 km (0.09 R)
• M6: 791,672 km (0.075 R)
• M7: 908,508 km (0.109 R)
• M8: 1,329,327 km (0.095 R)
• M9: 1,825,393 km (0.111 R)
• M10: 2,043,058 km (0.065 R)
• M11: 2,269,400 km (0.083 R)
• M12: 2,768,907 km (0.037 R)
• M13: 2,859,264 km (0.072 R)
• M14: 3,230,716 km (0.097 R)
• M15: 3,349,945 km (0.085 R)
• M16: 4,044,678 km (0.097 R)
• M17: 4,251,272 km (0.09 R)
• M18: 4,892,000 km (0.114 R)
• M19: 5,251,783 km (0.1 R)
• M20: 5,477,376 km (0.083 R)
• M21: 5,677,389 km (0.081 R)
• M22: 5,792,878 km (0.059 R)
• M23: 6,055,423 km (0.094 R)
• M24: 6,202,926 km (0.107 R)
• M25: 7,175,462 km (0.071 R)
• M26: 7,394,473 km (0.084 R)
• M27: 7,615,878 km (0.112 R)
• M28: 7,775,200 km (0.055 R)
• M29: 8,325,421 km (0.118 R)
• M30: 8,456,768 km (0.053 R)
• M31: 9,022,547 km (0.089 R)
• M32: 10,401,690 km (0.119 R)
• M33: 10,756,685 km (0.112 R)
• M34: 11,224,179 km (0.089 R)
• M35: 11,624,951 km (0.118 R)
• M36: 11,808,658 km (0.115 R)
• M37: 12,553,057 km (0.08 R)
• M38: 12,666,003 km (0.109 R)
• M39: 13,007,086 km (0.115 R)
• M40: 13,236,120 km (0.052 R)
• M41: 14,009,093 km (0.104 R)
• M42: 14,480,027 km (0.048 R)
• M43: 15,236,094 km (0.111 R)
• M44: 15,598,720 km (0.037 R)
• M45: 16,497,204 km (0.097 R)
• M46: 16,703,799 km (0.071 R)
• M47: 17,664,965 km (0.108 R)
• M48: 17,791,675 km (0.12 R)
• M49: 17,876,198 km (0.063 R)
• M50: 18,729,953 km (0.096 R)
• M51: 19,161,692 km (0.095 R)
• M52: 20,123,307 km (0.111 R)
• M53: 20,211,420 km (0.089 R)
• M54: 20,565,518 km (0.098 R)
• M55: 20,966,291 km (0.087 R)
• M56: 22,002,256 km (0.086 R)
• M57: 22,093,062 km (0.104 R)
• M58: 22,503,559 km (0.061 R)
• M59: 22,824,596 km (0.07 R)
• M60: 23,146,979 km (0.062 R)
• M61: 23,703,483 km (0.117 R)
• M62: 23,843,208 km (0.069 R)
• M63: 24,123,554 km (0.095 R)
• M64: 25,446,598 km (0.112 R)
• M65: 25,780,949 km (0.107 R)
• M66: 25,876,841 km (0.094 R)
• M67: 26,020,754 km (0.088 R)
• M68: 26,116,946 km (0.057 R)
• M69: 26,357,649 km (0.071 R)
• M70: 27,181,933 km (0.063 R)
• M71: 27,279,471 km (0.098 R)
• M72: 27,474,846 km (0.06 R)
• M73: 27,768,806 km (0.091 R)
• M74: 28,162,398 km (0.089 R)
• M75: 28,409,384 km (0.089 R)
• M76: 28,656,968 km (0.091 R)
• M77: 29,755,316 km (0.06 R)
• M78: 30,107,619 km (0.102 R)
• M79: 30,511,982 km (0.034 R)
• M80: 31,530,594 km (0.109 R)
• M81: 31,889,778 km (0.104 R)
• M82: 32,302,070 km (0.085 R)
• M83: 33,601,477 km (0.082 R)
• M84: 34,336,451 km (0.045 R)
• M85: 34,547,534 km (0.077 R)
• M86: 35,502,417 km (0.085 R)
• M87: 35,715,744 km (0.057 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 408.6

Radius: 4.4

Gravity: 21.11 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 11.23 AU - 11.55 AU

Year: 24441 Days

Day: 21.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 73,211,948 km

• M1: 150,944 km (0.103 R)
• M2: 231,428 km (0.074 R)
• M3: 416,032 km (0.103 R)
• M4: 454,030 km (0.079 R)
• M5: 493,224 km (0.099 R)
• M6: 662,120 km (0.029 R)
• M7: 998,416 km (0.098 R)
• M8: 1,076,656 km (0.097 R)
• M9: 1,184,067 km (0.043 R)
• M10: 1,295,218 km (0.058 R)
• M11: 1,438,683 km (0.112 R)
• M12: 1,867,729 km (0.114 R)
• M13: 2,333,577 km (0.093 R)
• M14: 3,095,778 km (0.097 R)
• M15: 4,562,286 km (0.109 R)
• M16: 4,649,203 km (0.084 R)
• M17: 4,869,111 km (0.08 R)
• M18: 4,957,973 km (0.106 R)
• M19: 5,092,312 km (0.107 R)
• M20: 5,227,847 km (0.1 R)
• M21: 5,923,178 km (0.113 R)
• M22: 6,161,488 km (0.107 R)
• M23: 6,402,789 km (0.111 R)
• M24: 6,745,817 km (0.06 R)
• M25: 7,758,744 km (0.083 R)
• M26: 7,914,625 km (0.064 R)
• M27: 9,089,866 km (0.098 R)
• M28: 9,921,780 km (0.085 R)
• M29: 11,126,940 km (0.114 R)
• M30: 12,075,690 km (0.053 R)
• M31: 12,196,116 km (0.067 R)
• M32: 12,498,902 km (0.097 R)
• M33: 13,421,921 km (0.112 R)
• M34: 13,484,303 km (0.114 R)
• M35: 13,797,262 km (0.039 R)
• M36: 14,622,294 km (0.04 R)
• M37: 17,327,173 km (0.084 R)
• M38: 17,735,576 km (0.102 R)
• M39: 18,701,230 km (0.073 R)
• M40: 19,542,269 km (0.113 R)
• M41: 20,252,560 km (0.115 R)
• M42: 21,771,577 km (0.071 R)
• M43: 22,065,088 km (0.081 R)
• M44: 23,177,198 km (0.087 R)
• M45: 23,627,189 km (0.064 R)
• M46: 24,004,325 km (0.033 R)
• M47: 24,231,564 km (0.053 R)
• M48: 25,224,445 km (0.088 R)
• M49: 26,152,849 km (0.053 R)
• M50: 26,543,001 km (0.097 R)
• M51: 27,407,975 km (0.07 R)
• M52: 27,804,111 km (0.064 R)
• M53: 29,246,234 km (0.101 R)
• M54: 30,302,694 km (0.075 R)
• M55: 31,454,448 km (0.095 R)
• M56: 33,461,902 km (0.084 R)
• M57: 34,055,058 km (0.083 R)
• M58: 34,822,944 km (0.054 R)
• M59: 35,769,300 km (0.097 R)
• M60: 38,127,411 km (0.069 R)
• M61: 38,392,498 km (0.053 R)
• M62: 39,013,479 km (0.044 R)
• M63: 40,175,555 km (0.044 R)
• M64: 40,896,168 km (0.095 R)
• M65: 41,439,508 km (0.061 R)
• M66: 41,530,314 km (0.114 R)
• M67: 43,083,888 km (0.097 R)
• M68: 45,029,109 km (0.075 R)
• M69: 46,153,337 km (0.056 R)
• M70: 49,004,373 km (0.109 R)
• M71: 49,196,457 km (0.077 R)
• M72: 50,257,405 km (0.05 R)
• M73: 51,520,908 km (0.119 R)
• M74: 55,273,720 km (0.055 R)
• M75: 55,874,356 km (0.099 R)
• M76: 55,974,586 km (0.111 R)
• M77: 57,587,700 km (0.084 R)
• M78: 57,891,833 km (0.091 R)
• M79: 58,196,414 km (0.108 R)
• M80: 59,011,573 km (0.112 R)
• M81: 60,756,034 km (0.065 R)
• M82: 62,101,517 km (0.109 R)
• M83: 64,611,021 km (0.08 R)
• M84: 67,901,277 km (0.084 R)
• M85: 68,651,809 km (0.086 R)
• M86: 68,974,193 km (0.032 R)
• M87: 69,944,634 km (0.112 R)
• M88: 70,485,730 km (0.113 R)
• M89: 71,136,929 km (0.084 R)
• M90: 72,335,806 km (0.105 R)
• M91: 72,554,518 km (0.098 R)
• M92: 72,664,024 km (0.032 R)
• M93: 72,773,380 km (0.107 R)
• M94: 72,992,541 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: 446 - 18,358 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit