🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.1

Radius: 13.4

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.17 AU - 1.19 AU

Year: 841 Days

Day: 13 Hours

Environment

Temp: -177 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 76,361,817 km

• M1: 170,242 km (0.092 R)
• M2: 259,852 km (0.119 R)
• M3: 372,798 km (0.088 R)
• M4: 520,451 km (0.118 R)
• M5: 614,847 km (0.105 R)
• M6: 804,238 km (0.099 R)
• M7: 891,155 km (0.098 R)
• M8: 1,104,182 km (0.034 R)
• M9: 1,214,436 km (0.113 R)
• M10: 1,310,328 km (0.115 R)
• M11: 1,421,629 km (0.075 R)
• M12: 1,523,355 km (0.113 R)
• M13: 1,640,939 km (0.089 R)
• M14: 1,857,706 km (0.059 R)
• M15: 1,955,693 km (0.055 R)
• M16: 2,055,475 km (0.072 R)
• M17: 2,171,712 km (0.089 R)
• M18: 2,883,050 km (0.06 R)
• M19: 3,005,720 km (0.036 R)
• M20: 3,105,203 km (0.114 R)
• M21: 3,264,824 km (0.042 R)
• M22: 3,350,095 km (0.108 R)
• M23: 3,505,377 km (0.081 R)
• M24: 3,689,532 km (0.026 R)
• M25: 3,796,345 km (0.111 R)
• M26: 3,922,157 km (0.092 R)
• M27: 4,012,963 km (0.081 R)
• M28: 4,205,944 km (0.113 R)
• M29: 4,392,642 km (0.108 R)
• M30: 4,572,609 km (0.093 R)
• M31: 4,979,216 km (0.083 R)
• M32: 5,347,077 km (0.113 R)
• M33: 5,438,032 km (0.027 R)
• M34: 5,765,203 km (0.083 R)
• M35: 6,183,478 km (0.077 R)
• M36: 6,310,936 km (0.108 R)
• M37: 6,439,141 km (0.089 R)
• M38: 6,579,165 km (0.059 R)
• M39: 6,665,782 km (0.093 R)
• M40: 6,785,610 km (0.118 R)
• M41: 6,873,125 km (0.108 R)
• M42: 7,093,781 km (0.051 R)
• M43: 7,305,612 km (0.116 R)
• M44: 7,417,810 km (0.111 R)
• M45: 7,508,168 km (0.08 R)
• M46: 7,610,044 km (0.109 R)
• M47: 7,724,037 km (0.037 R)

Planet 2 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 920.7

Radius: 10.4

Gravity: 8.51 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 2.66 AU - 3.52 AU

Year: 3563 Days

Day: 14.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 65.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 76,361,817 km

• M1: 138,677 km (0.112 R)
• M2: 349,012 km (0.112 R)
• M3: 651,200 km (0.084 R)
• M4: 855,700 km (0.079 R)
• M5: 1,055,413 km (0.03 R)
• M6: 1,201,720 km (0.112 R)
• M7: 1,298,659 km (0.086 R)
• M8: 1,456,335 km (0.112 R)
• M9: 1,838,558 km (0.071 R)
• M10: 2,442,784 km (0.091 R)
• M11: 2,567,099 km (0.118 R)
• M12: 2,748,562 km (0.087 R)
• M13: 2,915,513 km (0.062 R)
• M14: 3,009,760 km (0.117 R)
• M15: 3,377,172 km (0.086 R)
• M16: 3,800,085 km (0.109 R)
• M17: 3,965,690 km (0.045 R)
• M18: 4,261,295 km (0.104 R)
• M19: 4,585,923 km (0.067 R)
• M20: 4,963,657 km (0.043 R)
• M21: 5,144,970 km (0.12 R)
• M22: 5,963,719 km (0.086 R)
• M23: 6,425,229 km (0.04 R)
• M24: 6,722,629 km (0.114 R)
• M25: 6,923,389 km (0.096 R)
• M26: 7,075,231 km (0.105 R)
• M27: 7,254,001 km (0.103 R)
• M28: 7,667,938 km (0.073 R)
• M29: 7,746,327 km (0.099 R)
• M30: 8,196,168 km (0.062 R)
• M31: 8,276,502 km (0.105 R)
• M32: 8,383,913 km (0.057 R)
• M33: 8,627,309 km (0.051 R)
• M34: 9,483,607 km (0.105 R)
• M35: 10,193,898 km (0.112 R)
• M36: 11,157,608 km (0.078 R)
• M37: 11,485,377 km (0.053 R)
• M38: 12,089,303 km (0.11 R)
• M39: 12,211,375 km (0.073 R)
• M40: 12,395,081 km (0.109 R)
• M41: 13,108,364 km (0.104 R)
• M42: 13,422,669 km (0.083 R)
• M43: 14,058,609 km (0.117 R)
• M44: 14,251,292 km (0.102 R)
• M45: 15,591,539 km (0.101 R)
• M46: 16,091,944 km (0.104 R)
• M47: 16,192,623 km (0.1 R)
• M48: 16,428,389 km (0.059 R)
• M49: 16,529,817 km (0.113 R)
• M50: 16,767,378 km (0.115 R)
• M51: 17,040,095 km (0.049 R)
• M52: 17,211,235 km (0.047 R)
• M53: 17,590,017 km (0.071 R)
• M54: 17,797,659 km (0.093 R)
• M55: 18,250,641 km (0.066 R)
• M56: 18,531,137 km (0.063 R)
• M57: 18,919,344 km (0.094 R)
• M58: 20,498,648 km (0.087 R)
• M59: 20,900,019 km (0.055 R)
• M60: 21,821,991 km (0.104 R)
• M61: 22,119,840 km (0.065 R)
• M62: 22,269,289 km (0.117 R)
• M63: 23,629,133 km (0.075 R)
• M64: 24,126,845 km (0.115 R)
• M65: 24,280,632 km (0.051 R)
• M66: 24,434,867 km (0.113 R)
• M67: 24,589,252 km (0.063 R)
• M68: 25,483,848 km (0.083 R)
• M69: 25,601,282 km (0.095 R)
• M70: 25,994,276 km (0.114 R)
• M71: 26,151,952 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.2

Radius: 12

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 2.82 AU - 3.44 AU

Year: 3633 Days

Day: 13 Hours

Environment

Temp: -211 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 76,361,817 km

• M1: 192,682 km (0.103 R)
• M2: 310,864 km (0.051 R)
• M3: 413,937 km (0.117 R)
• M4: 541,544 km (0.091 R)
• M5: 664,963 km (0.109 R)
• M6: 788,381 km (0.077 R)
• M7: 954,734 km (0.046 R)
• M8: 1,195,437 km (0.085 R)
• M9: 1,362,837 km (0.05 R)
• M10: 1,912,010 km (0.084 R)
• M11: 2,002,517 km (0.111 R)
• M12: 2,219,135 km (0.094 R)
• M13: 2,330,436 km (0.112 R)
• M14: 2,443,681 km (0.116 R)
• M15: 2,675,708 km (0.102 R)
• M16: 2,880,507 km (0.113 R)
• M17: 2,984,926 km (0.063 R)
• M18: 3,161,751 km (0.06 R)
• M19: 3,488,922 km (0.078 R)
• M20: 3,656,621 km (0.094 R)
• M21: 4,515,013 km (0.118 R)
• M22: 4,780,400 km (0.09 R)
• M23: 5,607,227 km (0.108 R)
• M24: 5,959,231 km (0.032 R)
• M25: 6,138,001 km (0.103 R)
• M26: 6,318,565 km (0.037 R)
• M27: 6,500,925 km (0.026 R)
• M28: 7,366,947 km (0.052 R)
• M29: 7,510,711 km (0.116 R)
• M30: 7,776,995 km (0.048 R)
• M31: 8,046,271 km (0.104 R)
• M32: 8,518,851 km (0.101 R)
• M33: 8,745,791 km (0.104 R)
• M34: 9,128,612 km (0.094 R)
• M35: 9,335,057 km (0.099 R)
• M36: 10,202,874 km (0.115 R)
• M37: 10,768,504 km (0.067 R)
• M38: 11,289,104 km (0.106 R)
• M39: 12,127,899 km (0.1 R)
• M40: 12,526,279 km (0.095 R)
• M41: 13,102,829 km (0.104 R)
• M42: 13,511,530 km (0.105 R)
• M43: 13,658,585 km (0.062 R)
• M44: 14,013,431 km (0.056 R)
• M45: 14,431,557 km (0.104 R)
• M46: 15,218,741 km (0.047 R)
• M47: 15,371,630 km (0.056 R)
• M48: 16,082,070 km (0.051 R)
• M49: 16,269,068 km (0.096 R)
• M50: 16,708,437 km (0.103 R)
• M51: 17,151,695 km (0.119 R)
• M52: 17,310,867 km (0.108 R)
• M53: 17,470,638 km (0.11 R)
• M54: 17,791,675 km (0.073 R)
• M55: 18,179,432 km (0.109 R)
• M56: 19,293,039 km (0.08 R)
• M57: 19,492,004 km (0.106 R)
• M58: 20,058,980 km (0.072 R)
• M59: 20,395,127 km (0.097 R)
• M60: 20,936,820 km (0.104 R)
• M61: 21,312,012 km (0.11 R)
• M62: 21,414,636 km (0.045 R)
• M63: 21,551,817 km (0.04 R)
• M64: 22,103,534 km (0.072 R)
• M65: 22,450,751 km (0.085 R)
• M66: 23,326,646 km (0.085 R)
• M67: 23,467,867 km (0.108 R)
• M68: 23,609,386 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.7

Radius: 11.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.15 AU - 5.13 AU

Year: 5526 Days

Day: 10 Hours

Environment

Temp: -216 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 76,361,817 km

• M1: 169,046 km (0.116 R)
• M2: 273,016 km (0.09 R)
• M3: 345,272 km (0.089 R)
• M4: 442,062 km (0.066 R)
• M5: 542,591 km (0.105 R)
• M6: 927,058 km (0.108 R)
• M7: 999,164 km (0.091 R)
• M8: 1,307,485 km (0.072 R)
• M9: 1,461,122 km (0.039 R)
• M10: 1,571,077 km (0.088 R)
• M11: 1,646,025 km (0.089 R)
• M12: 1,958,236 km (0.059 R)
• M13: 2,107,834 km (0.1 R)
• M14: 2,191,010 km (0.096 R)
• M15: 2,275,384 km (0.095 R)
• M16: 2,447,421 km (0.084 R)
• M17: 2,535,086 km (0.109 R)
• M18: 2,668,676 km (0.108 R)
• M19: 2,743,924 km (0.071 R)
• M20: 2,865,846 km (0.099 R)
• M21: 2,958,447 km (0.108 R)
• M22: 3,130,934 km (0.032 R)
• M23: 3,436,861 km (0.049 R)
• M24: 3,837,185 km (0.082 R)
• M25: 3,939,660 km (0.035 R)
• M26: 4,043,032 km (0.052 R)
• M27: 4,182,308 km (0.098 R)
• M28: 4,976,822 km (0.065 R)
• M29: 5,277,214 km (0.058 R)
• M30: 5,545,144 km (0.083 R)
• M31: 5,700,128 km (0.052 R)
• M32: 6,254,388 km (0.111 R)
• M33: 6,722,480 km (0.083 R)
• M34: 7,138,810 km (0.112 R)
• M35: 7,350,192 km (0.07 R)
• M36: 8,348,908 km (0.054 R)
• M37: 8,638,978 km (0.055 R)
• M38: 8,728,886 km (0.097 R)
• M39: 9,831,871 km (0.098 R)
• M40: 9,972,942 km (0.073 R)
• M41: 10,256,879 km (0.103 R)
• M42: 10,615,615 km (0.114 R)
• M43: 10,736,190 km (0.059 R)
• M44: 10,832,980 km (0.12 R)
• M45: 10,954,304 km (0.078 R)
• M46: 11,124,846 km (0.12 R)
• M47: 11,691,822 km (0.114 R)
• M48: 11,816,287 km (0.077 R)
• M49: 12,016,449 km (0.09 R)
• M50: 12,369,350 km (0.065 R)
• M51: 12,521,641 km (0.116 R)
• M52: 13,085,326 km (0.073 R)
• M53: 13,422,519 km (0.114 R)
• M54: 13,578,999 km (0.106 R)
• M55: 13,946,561 km (0.1 R)
• M56: 14,025,848 km (0.071 R)
• M57: 14,450,706 km (0.032 R)
• M58: 15,069,143 km (0.047 R)
• M59: 15,395,117 km (0.06 R)
• M60: 15,668,582 km (0.119 R)
• M61: 16,387,250 km (0.039 R)
• M62: 16,554,650 km (0.083 R)
• M63: 17,144,963 km (0.08 R)
• M64: 17,513,722 km (0.094 R)
• M65: 17,742,158 km (0.111 R)
• M66: 17,942,619 km (0.089 R)
• M67: 18,781,713 km (0.07 R)
• M68: 19,456,250 km (0.063 R)
• M69: 19,930,176 km (0.072 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 104.6

Radius: 5.5

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 6.34 AU - 9.3 AU

Year: 14346 Days

Day: 22.4 Hours

Environment

Temp: -236 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 76,361,817 km

• M1: 96,191 km (0.055 R)
• M2: 174,581 km (0.106 R)
• M3: 263,292 km (0.067 R)
• M4: 931,845 km (0.044 R)
• M5: 1,035,666 km (0.119 R)
• M6: 1,575,116 km (0.104 R)
• M7: 2,347,789 km (0.081 R)
• M8: 2,593,429 km (0.067 R)
• M9: 2,761,726 km (0.117 R)
• M10: 2,825,754 km (0.119 R)
• M11: 2,955,306 km (0.104 R)
• M12: 3,020,830 km (0.069 R)
• M13: 3,773,008 km (0.112 R)
• M14: 3,868,003 km (0.107 R)
• M15: 4,990,286 km (0.07 R)
• M16: 5,199,573 km (0.095 R)
• M17: 5,654,201 km (0.091 R)
• M18: 5,927,516 km (0.04 R)
• M19: 6,205,170 km (0.079 R)
• M20: 6,430,315 km (0.101 R)
• M21: 6,515,586 km (0.115 R)
• M22: 7,034,241 km (0.118 R)
• M23: 7,536,292 km (0.11 R)
• M24: 7,716,109 km (0.108 R)
• M25: 7,867,202 km (0.097 R)
• M26: 8,295,352 km (0.055 R)
• M27: 8,419,069 km (0.077 R)
• M28: 8,668,299 km (0.112 R)
• M29: 9,301,996 km (0.038 R)
• M30: 9,689,454 km (0.104 R)
• M31: 10,148,121 km (0.095 R)
• M32: 10,647,329 km (0.063 R)
• M33: 10,748,009 km (0.037 R)
• M34: 11,120,358 km (0.081 R)
• M35: 11,188,574 km (0.068 R)
• M36: 11,738,795 km (0.118 R)
• M37: 11,982,191 km (0.1 R)
• M38: 12,017,197 km (0.113 R)
• M39: 13,369,113 km (0.049 R)
• M40: 13,696,283 km (0.093 R)
• M41: 13,805,939 km (0.032 R)
• M42: 13,952,694 km (0.087 R)
• M43: 14,358,703 km (0.075 R)
• M44: 14,880,949 km (0.06 R)
• M45: 15,144,391 km (0.115 R)
• M46: 15,182,239 km (0.077 R)
• M47: 15,599,767 km (0.073 R)
• M48: 15,676,062 km (0.113 R)
• M49: 16,562,728 km (0.114 R)
• M50: 16,835,744 km (0.071 R)
• M51: 17,031,718 km (0.092 R)
• M52: 18,343,841 km (0.087 R)
• M53: 18,545,498 km (0.083 R)
• M54: 18,585,890 km (0.118 R)
• M55: 18,828,986 km (0.11 R)
• M56: 19,154,811 km (0.107 R)
• M57: 19,195,651 km (0.096 R)
• M58: 19,482,430 km (0.096 R)
• M59: 19,605,848 km (0.097 R)
• M60: 20,018,888 km (0.117 R)
• M61: 20,101,765 km (0.053 R)
• M62: 20,643,758 km (0.093 R)
• M63: 20,811,607 km (0.041 R)
• M64: 21,614,499 km (0.09 R)
• M65: 21,742,106 km (0.043 R)
• M66: 21,912,797 km (0.05 R)
• M67: 22,341,395 km (0.084 R)
• M68: 23,556,130 km (0.109 R)
• M69: 23,775,290 km (0.067 R)
• M70: 23,951,217 km (0.117 R)
• M71: 23,995,199 km (0.099 R)
• M72: 24,304,119 km (0.096 R)
• M73: 24,392,531 km (0.094 R)
• M74: 24,525,524 km (0.077 R)
• M75: 24,703,246 km (0.097 R)
• M76: 24,881,267 km (0.101 R)
• M77: 25,283,536 km (0.094 R)
• M78: 25,913,493 km (0.098 R)
• M79: 27,005,408 km (0.101 R)
• M80: 27,234,891 km (0.05 R)
• M81: 28,298,382 km (0.105 R)
• M82: 28,718,154 km (0.071 R)
• M83: 29,186,993 km (0.048 R)
• M84: 29,658,526 km (0.1 R)
• M85: 30,037,457 km (0.049 R)
• M86: 30,084,880 km (0.038 R)
• M87: 30,752,236 km (0.087 R)
• M88: 31,424,529 km (0.036 R)
• M89: 31,472,699 km (0.077 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 729.7

Radius: 3.5

Gravity: 59.57 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 8.15 AU - 11.03 AU

Year: 19482 Days

Day: 18.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 76,361,817 km

• M1: 78,988 km (0.053 R)
• M2: 108,758 km (0.109 R)
• M3: 197,918 km (0.099 R)
• M4: 243,396 km (0.055 R)
• M5: 292,613 km (0.065 R)
• M6: 501,003 km (0.073 R)
• M7: 1,548,787 km (0.074 R)
• M8: 1,611,019 km (0.055 R)
• M9: 1,835,566 km (0.096 R)
• M10: 2,313,531 km (0.092 R)
• M11: 2,790,000 km (0.092 R)
• M12: 3,295,641 km (0.041 R)
• M13: 3,662,156 km (0.118 R)
• M14: 4,882,127 km (0.113 R)
• M15: 4,973,830 km (0.07 R)
• M16: 5,871,716 km (0.067 R)
• M17: 6,018,023 km (0.086 R)
• M18: 6,514,389 km (0.09 R)
• M19: 6,665,932 km (0.071 R)
• M20: 6,767,508 km (0.107 R)
• M21: 6,818,521 km (0.07 R)
• M22: 6,920,846 km (0.113 R)
• M23: 7,493,058 km (0.1 R)
• M24: 9,016,712 km (0.08 R)
• M25: 9,129,060 km (0.095 R)
• M26: 9,355,252 km (0.095 R)
• M27: 9,526,093 km (0.085 R)
• M28: 9,697,981 km (0.098 R)
• M29: 11,351,038 km (0.048 R)
• M30: 12,583,874 km (0.112 R)
• M31: 13,471,887 km (0.048 R)
• M32: 13,729,345 km (0.077 R)
• M33: 13,988,298 km (0.103 R)
• M34: 14,249,048 km (0.088 R)
• M35: 19,206,123 km (0.105 R)
• M36: 20,006,022 km (0.087 R)
• M37: 20,594,540 km (0.094 R)
• M38: 20,890,894 km (0.12 R)
• M39: 21,039,594 km (0.109 R)
• M40: 21,338,191 km (0.072 R)
• M41: 21,863,878 km (0.102 R)
• M42: 22,318,058 km (0.093 R)
• M43: 23,158,498 km (0.058 R)
• M44: 23,312,435 km (0.109 R)
• M45: 23,389,477 km (0.035 R)
• M46: 23,698,696 km (0.097 R)
• M47: 24,477,652 km (0.105 R)
• M48: 25,344,123 km (0.101 R)
• M49: 26,541,953 km (0.049 R)
• M50: 28,003,225 km (0.118 R)
• M51: 29,992,129 km (0.094 R)
• M52: 30,159,828 km (0.109 R)
• M53: 30,243,902 km (0.098 R)
• M54: 30,412,050 km (0.119 R)
• M55: 30,496,424 km (0.109 R)
• M56: 32,283,220 km (0.091 R)
• M57: 33,580,234 km (0.109 R)
• M58: 35,601,750 km (0.039 R)
• M59: 36,135,515 km (0.1 R)
• M60: 36,582,514 km (0.075 R)
• M61: 36,851,491 km (0.107 R)
• M62: 38,024,637 km (0.105 R)
• M63: 39,393,607 km (0.119 R)
• M64: 40,778,435 km (0.106 R)
• M65: 45,605,060 km (0.101 R)
• M66: 46,863,927 km (0.108 R)
• M67: 49,911,385 km (0.113 R)
• M68: 50,010,867 km (0.091 R)
• M69: 50,608,361 km (0.102 R)
• M70: 52,213,546 km (0.098 R)
• M71: 52,415,354 km (0.086 R)
• M72: 53,326,854 km (0.101 R)
• M73: 53,530,008 km (0.039 R)
• M74: 54,959,864 km (0.112 R)
• M75: 56,298,915 km (0.109 R)
• M76: 57,648,587 km (0.109 R)
• M77: 59,534,866 km (0.065 R)
• M78: 60,062,498 km (0.1 R)
• M79: 61,122,249 km (0.113 R)
• M80: 62,937,919 km (0.088 R)
• M81: 63,475,274 km (0.093 R)
• M82: 63,906,415 km (0.116 R)
• M83: 67,389,353 km (0.073 R)
• M84: 68,821,752 km (0.086 R)
• M85: 69,708,269 km (0.068 R)
• M86: 70,152,874 km (0.089 R)
• M87: 70,264,325 km (0.102 R)
• M88: 70,375,626 km (0.048 R)
• M89: 70,598,526 km (0.116 R)
• M90: 71,156,826 km (0.066 R)
• M91: 71,828,819 km (0.106 R)
• M92: 72,502,907 km (0.118 R)
• M93: 72,953,346 km (0.117 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 350 - 14,807 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit