🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.4

Radius: 8.6

Gravity: 12.31 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.8 AU - 1 AU

Year: 551 Days

Day: 11.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 67,940,374 km

• M1: 110,403 km (0.104 R)
• M2: 171,738 km (0.098 R)
• M3: 280,496 km (0.108 R)
• M4: 396,734 km (0.12 R)
• M5: 535,560 km (0.107 R)
• M6: 597,793 km (0.103 R)
• M7: 653,294 km (0.071 R)
• M8: 730,337 km (0.112 R)
• M9: 831,315 km (0.102 R)
• M10: 975,378 km (0.087 R)
• M11: 1,180,626 km (0.038 R)
• M12: 1,306,737 km (0.072 R)
• M13: 1,553,275 km (0.119 R)
• M14: 1,612,366 km (0.104 R)
• M15: 1,807,741 km (0.087 R)
• M16: 1,912,010 km (0.092 R)
• M17: 1,968,409 km (0.093 R)
• M18: 2,133,714 km (0.071 R)
• M19: 2,199,687 km (0.091 R)
• M20: 2,318,767 km (0.078 R)
• M21: 2,409,423 km (0.085 R)
• M22: 2,470,459 km (0.072 R)
• M23: 2,563,210 km (0.096 R)
• M24: 2,625,592 km (0.044 R)
• M25: 2,712,359 km (0.1 R)
• M26: 2,888,735 km (0.112 R)
• M27: 2,978,344 km (0.096 R)
• M28: 3,126,895 km (0.066 R)
• M29: 3,295,043 km (0.07 R)
• M30: 3,388,691 km (0.099 R)
• M31: 3,491,913 km (0.107 R)
• M32: 3,631,339 km (0.106 R)
• M33: 3,728,129 km (0.026 R)
• M34: 3,825,966 km (0.045 R)
• M35: 3,933,526 km (0.106 R)
• M36: 4,042,134 km (0.1 R)
• M37: 4,096,887 km (0.12 R)
• M38: 4,216,266 km (0.094 R)
• M39: 4,581,285 km (0.053 R)
• M40: 4,648,006 km (0.037 R)
• M41: 4,791,769 km (0.03 R)
• M42: 4,976,224 km (0.112 R)
• M43: 5,103,681 km (0.112 R)
• M44: 5,391,956 km (0.118 R)
• M45: 5,523,004 km (0.084 R)
• M46: 5,654,949 km (0.115 R)
• M47: 5,726,606 km (0.071 R)
• M48: 5,943,075 km (0.075 R)
• M49: 6,225,216 km (0.06 R)
• M50: 6,330,982 km (0.11 R)
• M51: 6,415,953 km (0.117 R)
• M52: 6,501,224 km (0.092 R)
• M53: 6,737,888 km (0.108 R)
• M54: 6,835,576 km (0.103 R)
• M55: 7,076,278 km (0.05 R)
• M56: 7,275,244 km (0.109 R)
• M57: 7,599,871 km (0.058 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.4

Radius: 9

Gravity: 11.56 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 1.15 AU - 1.75 AU

Year: 1127 Days

Day: 7 Hours

Environment

Temp: -184 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 67,940,374 km

• M1: 112,348 km (0.102 R)
• M2: 185,651 km (0.047 R)
• M3: 245,341 km (0.1 R)
• M4: 339,737 km (0.073 R)
• M5: 530,474 km (0.118 R)
• M6: 597,943 km (0.109 R)
• M7: 763,248 km (0.104 R)
• M8: 936,483 km (0.093 R)
• M9: 1,020,257 km (0.092 R)
• M10: 1,138,889 km (0.119 R)
• M11: 1,220,569 km (0.065 R)
• M12: 1,407,417 km (0.09 R)
• M13: 1,540,409 km (0.061 R)
• M14: 1,659,040 km (0.069 R)
• M15: 1,733,540 km (0.085 R)
• M16: 1,876,406 km (0.097 R)
• M17: 2,033,185 km (0.111 R)
• M18: 2,143,588 km (0.055 R)
• M19: 2,214,946 km (0.115 R)
• M20: 2,276,580 km (0.118 R)
• M21: 2,412,415 km (0.097 R)
• M22: 2,583,256 km (0.107 R)
• M23: 2,670,322 km (0.101 R)
• M24: 2,903,246 km (0.108 R)
• M25: 2,982,383 km (0.082 R)
• M26: 3,119,864 km (0.076 R)
• M27: 3,189,427 km (0.118 R)
• M28: 3,484,583 km (0.09 R)
• M29: 3,593,042 km (0.038 R)
• M30: 3,666,045 km (0.12 R)
• M31: 3,850,500 km (0.068 R)
• M32: 4,063,377 km (0.116 R)
• M33: 4,241,698 km (0.111 R)
• M34: 4,370,651 km (0.115 R)
• M35: 4,474,622 km (0.111 R)
• M36: 5,226,202 km (0.105 R)
• M37: 5,434,143 km (0.119 R)
• M38: 5,588,378 km (0.089 R)
• M39: 5,758,471 km (0.074 R)
• M40: 5,915,698 km (0.119 R)
• M41: 6,031,038 km (0.066 R)
• M42: 6,249,301 km (0.119 R)
• M43: 6,337,265 km (0.068 R)
• M44: 7,132,677 km (0.063 R)
• M45: 7,394,473 km (0.076 R)
• M46: 7,596,879 km (0.074 R)
• M47: 7,659,561 km (0.072 R)
• M48: 7,832,645 km (0.1 R)
• M49: 7,943,497 km (0.097 R)
• M50: 8,198,861 km (0.063 R)
• M51: 8,359,828 km (0.119 R)
• M52: 8,587,067 km (0.091 R)
• M53: 8,750,578 km (0.053 R)
• M54: 8,849,163 km (0.108 R)
• M55: 9,047,380 km (0.059 R)
• M56: 9,213,882 km (0.102 R)
• M57: 9,364,378 km (0.08 R)
• M58: 9,431,697 km (0.089 R)
• M59: 9,787,141 km (0.044 R)
• M60: 9,889,616 km (0.091 R)
• M61: 10,164,278 km (0.102 R)
• M62: 10,476,488 km (0.099 R)
• M63: 10,826,996 km (0.109 R)
• M64: 10,897,606 km (0.117 R)
• M65: 11,003,671 km (0.118 R)
• M66: 11,629,738 km (0.102 R)
• M67: 12,157,221 km (0.113 R)
• M68: 12,230,524 km (0.054 R)
• M69: 12,340,927 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.3

Radius: 9.9

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.18 AU - 3.02 AU

Year: 2707 Days

Day: 14.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 67,940,374 km

• M1: 132,993 km (0.088 R)
• M2: 233,073 km (0.11 R)
• M3: 298,747 km (0.116 R)
• M4: 457,620 km (0.119 R)
• M5: 647,310 km (0.116 R)
• M6: 937,231 km (0.071 R)
• M7: 1,013,376 km (0.103 R)
• M8: 1,103,135 km (0.088 R)
• M9: 1,231,041 km (0.096 R)
• M10: 1,401,283 km (0.083 R)
• M11: 1,502,262 km (0.101 R)
• M12: 1,618,799 km (0.11 R)
• M13: 1,684,771 km (0.071 R)
• M14: 2,057,569 km (0.067 R)
• M15: 2,365,442 km (0.115 R)
• M16: 2,517,283 km (0.12 R)
• M17: 2,609,884 km (0.116 R)
• M18: 2,798,827 km (0.103 R)
• M19: 3,140,059 km (0.029 R)
• M20: 3,223,385 km (0.09 R)
• M21: 3,951,777 km (0.081 R)
• M22: 4,114,540 km (0.091 R)
• M23: 4,187,544 km (0.117 R)
• M24: 4,334,897 km (0.057 R)
• M25: 4,540,295 km (0.046 R)
• M26: 4,615,693 km (0.115 R)
• M27: 5,314,165 km (0.091 R)
• M28: 5,473,936 km (0.082 R)
• M29: 5,574,465 km (0.113 R)
• M30: 6,128,726 km (0.112 R)
• M31: 6,296,275 km (0.116 R)
• M32: 7,003,574 km (0.069 R)
• M33: 7,289,156 km (0.06 R)
• M34: 7,578,628 km (0.039 R)
• M35: 7,871,840 km (0.111 R)
• M36: 8,214,868 km (0.046 R)
• M37: 8,586,170 km (0.093 R)
• M38: 9,201,167 km (0.067 R)
• M39: 9,321,144 km (0.117 R)
• M40: 9,611,065 km (0.099 R)
• M41: 9,684,069 km (0.091 R)
• M42: 10,274,382 km (0.071 R)
• M43: 10,498,629 km (0.115 R)
• M44: 10,674,406 km (0.118 R)
• M45: 10,901,646 km (0.073 R)
• M46: 11,003,073 km (0.116 R)
• M47: 11,748,519 km (0.078 R)
• M48: 11,904,849 km (0.067 R)
• M49: 12,009,418 km (0.066 R)
• M50: 12,883,817 km (0.11 R)
• M51: 13,288,031 km (0.116 R)
• M52: 14,109,024 km (0.07 R)
• M53: 14,386,229 km (0.102 R)
• M54: 14,861,800 km (0.109 R)
• M55: 14,974,448 km (0.089 R)
• M56: 15,144,092 km (0.104 R)
• M57: 15,314,184 km (0.076 R)
• M58: 15,713,611 km (0.097 R)
• M59: 15,914,670 km (0.084 R)
• M60: 16,030,010 km (0.086 R)
• M61: 16,581,278 km (0.04 R)
• M62: 16,844,571 km (0.086 R)
• M63: 17,257,012 km (0.063 R)
• M64: 17,523,895 km (0.071 R)
• M65: 17,642,974 km (0.11 R)
• M66: 18,605,038 km (0.106 R)
• M67: 19,153,614 km (0.118 R)
• M68: 19,614,974 km (0.091 R)
• M69: 19,862,408 km (0.093 R)
• M70: 20,079,774 km (0.051 R)
• M71: 20,142,157 km (0.039 R)
• M72: 20,204,389 km (0.119 R)
• M73: 20,705,392 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.9

Radius: 14

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 3.01 AU - 3.45 AU

Year: 3748 Days

Day: 5.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 67,940,374 km

• M1: 179,368 km (0.086 R)
• M2: 267,481 km (0.026 R)
• M3: 361,728 km (0.1 R)
• M4: 460,462 km (0.08 R)
• M5: 597,643 km (0.117 R)
• M6: 732,880 km (0.101 R)
• M7: 910,602 km (0.084 R)
• M8: 1,059,751 km (0.11 R)
• M9: 1,252,882 km (0.061 R)
• M10: 1,688,362 km (0.092 R)
• M11: 1,794,576 km (0.098 R)
• M12: 1,889,421 km (0.083 R)
• M13: 1,986,211 km (0.049 R)
• M14: 2,127,282 km (0.083 R)
• M15: 2,271,943 km (0.042 R)
• M16: 2,617,364 km (0.044 R)
• M17: 2,963,983 km (0.077 R)
• M18: 3,061,072 km (0.116 R)
• M19: 3,392,730 km (0.112 R)
• M20: 3,494,457 km (0.114 R)
• M21: 3,929,936 km (0.061 R)
• M22: 4,272,665 km (0.12 R)
• M23: 4,456,969 km (0.03 R)
• M24: 4,625,117 km (0.115 R)
• M25: 4,871,804 km (0.08 R)
• M26: 5,122,979 km (0.103 R)
• M27: 5,260,011 km (0.041 R)
• M28: 5,638,045 km (0.072 R)
• M29: 6,420,890 km (0.047 R)
• M30: 6,547,600 km (0.113 R)
• M31: 6,760,777 km (0.081 R)
• M32: 7,063,114 km (0.069 R)
• M33: 7,658,813 km (0.114 R)
• M34: 8,501,348 km (0.118 R)
• M35: 8,874,894 km (0.08 R)
• M36: 8,992,627 km (0.028 R)
• M37: 9,349,418 km (0.058 R)
• M38: 9,662,227 km (0.032 R)
• M39: 9,807,936 km (0.067 R)
• M40: 9,905,324 km (0.081 R)
• M41: 10,224,416 km (0.094 R)
• M42: 10,323,300 km (0.094 R)
• M43: 10,696,846 km (0.09 R)
• M44: 11,125,594 km (0.118 R)
• M45: 11,457,252 km (0.083 R)
• M46: 11,688,830 km (0.093 R)
• M47: 12,104,413 km (0.086 R)
• M48: 12,630,698 km (0.083 R)
• M49: 12,736,912 km (0.031 R)
• M50: 12,843,426 km (0.107 R)
• M51: 13,083,979 km (0.093 R)
• M52: 13,218,318 km (0.1 R)
• M53: 13,353,106 km (0.093 R)
• M54: 13,515,569 km (0.042 R)
• M55: 14,199,082 km (0.08 R)
• M56: 14,448,013 km (0.106 R)
• M57: 14,810,040 km (0.102 R)
• M58: 15,799,779 km (0.088 R)
• M59: 16,172,727 km (0.118 R)
• M60: 16,723,247 km (0.106 R)
• M61: 16,986,240 km (0.105 R)
• M62: 17,338,842 km (0.068 R)
• M63: 18,291,182 km (0.096 R)
• M64: 19,936,759 km (0.074 R)
• M65: 20,339,925 km (0.072 R)
• M66: 20,714,518 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.2

Radius: 11.4

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 5.62 AU - 6.3 AU

Year: 9395 Days

Day: 7.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 67,940,374 km

• M1: 174,431 km (0.118 R)
• M2: 320,738 km (0.104 R)
• M3: 424,708 km (0.081 R)
• M4: 703,110 km (0.066 R)
• M5: 1,006,195 km (0.111 R)
• M6: 1,138,889 km (0.066 R)
• M7: 1,535,323 km (0.092 R)
• M8: 1,953,000 km (0.072 R)
• M9: 2,142,840 km (0.107 R)
• M10: 2,229,158 km (0.034 R)
• M11: 2,472,853 km (0.081 R)
• M12: 2,772,198 km (0.112 R)
• M13: 3,107,746 km (0.116 R)
• M14: 3,558,485 km (0.104 R)
• M15: 3,635,527 km (0.119 R)
• M16: 4,083,573 km (0.092 R)
• M17: 4,191,433 km (0.1 R)
• M18: 4,273,114 km (0.072 R)
• M19: 4,437,970 km (0.104 R)
• M20: 4,577,096 km (0.074 R)
• M21: 4,945,406 km (0.07 R)
• M22: 5,560,553 km (0.113 R)
• M23: 5,680,530 km (0.101 R)
• M24: 5,862,142 km (0.029 R)
• M25: 6,418,497 km (0.077 R)
• M26: 6,862,952 km (0.068 R)
• M27: 7,056,532 km (0.04 R)
• M28: 7,219,294 km (0.12 R)
• M29: 7,648,191 km (0.062 R)
• M30: 8,051,357 km (0.098 R)
• M31: 8,255,708 km (0.08 R)
• M32: 8,496,112 km (0.044 R)
• M33: 8,738,909 km (0.11 R)
• M34: 8,913,789 km (0.041 R)
• M35: 9,266,990 km (0.086 R)
• M36: 10,023,656 km (0.05 R)
• M37: 10,912,716 km (0.111 R)
• M38: 11,749,866 km (0.035 R)
• M39: 12,371,594 km (0.109 R)
• M40: 12,726,141 km (0.071 R)
• M41: 13,445,109 km (0.086 R)
• M42: 13,687,756 km (0.026 R)
• M43: 13,931,751 km (0.083 R)
• M44: 14,548,243 km (0.112 R)
• M45: 15,426,383 km (0.077 R)
• M46: 15,553,242 km (0.116 R)
• M47: 15,637,914 km (0.105 R)
• M48: 15,722,886 km (0.073 R)
• M49: 17,277,357 km (0.075 R)
• M50: 17,365,171 km (0.094 R)
• M51: 17,629,511 km (0.09 R)
• M52: 18,340,849 km (0.104 R)
• M53: 18,880,448 km (0.091 R)
• M54: 20,159,959 km (0.082 R)
• M55: 20,950,434 km (0.079 R)
• M56: 21,090,906 km (0.118 R)
• M57: 21,184,854 km (0.12 R)
• M58: 22,609,474 km (0.101 R)
• M59: 22,801,857 km (0.043 R)
• M60: 23,430,617 km (0.097 R)
• M61: 23,625,244 km (0.099 R)
• M62: 23,967,075 km (0.058 R)
• M63: 24,556,939 km (0.045 R)
• M64: 25,101,924 km (0.04 R)
• M65: 27,680,094 km (0.077 R)
• M66: 29,078,834 km (0.106 R)
• M67: 29,235,762 km (0.083 R)
• M68: 29,918,677 km (0.057 R)
• M69: 30,129,759 km (0.108 R)
• M70: 30,394,547 km (0.113 R)
• M71: 30,872,812 km (0.101 R)
• M72: 31,193,101 km (0.085 R)
• M73: 34,290,674 km (0.113 R)
• M74: 34,677,684 km (0.105 R)
• M75: 35,400,541 km (0.104 R)
• M76: 35,791,739 km (0.119 R)
• M77: 36,015,987 km (0.055 R)
• M78: 37,598,433 km (0.11 R)
• M79: 37,997,710 km (0.079 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 458.2

Radius: 7.4

Gravity: 8.37 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 7.67 AU - 12.47 AU

Year: 20633 Days

Day: 19.1 Hours

Environment

Temp: -239 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 67,940,374 km

• M1: 103,223 km (0.078 R)
• M2: 409,898 km (0.12 R)
• M3: 783,294 km (0.049 R)
• M4: 873,502 km (0.1 R)
• M5: 1,064,389 km (0.059 R)
• M6: 1,216,380 km (0.107 R)
• M7: 1,833,172 km (0.073 R)
• M8: 1,923,978 km (0.118 R)
• M9: 2,078,662 km (0.104 R)
• M10: 2,772,647 km (0.086 R)
• M11: 3,838,233 km (0.062 R)
• M12: 4,974,129 km (0.12 R)
• M13: 5,711,198 km (0.106 R)
• M14: 6,251,845 km (0.114 R)
• M15: 6,714,850 km (0.117 R)
• M16: 7,045,611 km (0.109 R)
• M17: 7,188,926 km (0.08 R)
• M18: 7,722,840 km (0.1 R)
• M19: 8,119,275 km (0.026 R)
• M20: 8,319,886 km (0.112 R)
• M21: 8,931,741 km (0.114 R)
• M22: 9,558,107 km (0.096 R)
• M23: 10,415,004 km (0.095 R)
• M24: 10,852,727 km (0.05 R)
• M25: 11,520,532 km (0.06 R)
• M26: 11,802,674 km (0.084 R)
• M27: 12,489,178 km (0.116 R)
• M28: 12,662,861 km (0.096 R)
• M29: 13,129,906 km (0.086 R)
• M30: 13,781,255 km (0.079 R)
• M31: 15,548,155 km (0.047 R)
• M32: 15,735,003 km (0.112 R)
• M33: 16,935,676 km (0.088 R)
• M34: 17,385,367 km (0.109 R)
• M35: 17,514,620 km (0.06 R)
• M36: 17,838,948 km (0.088 R)
• M37: 18,625,683 km (0.101 R)
• M38: 22,514,330 km (0.113 R)
• M39: 22,796,472 km (0.082 R)
• M40: 22,937,842 km (0.097 R)
• M41: 24,224,084 km (0.104 R)
• M42: 24,948,736 km (0.096 R)
• M43: 27,465,421 km (0.105 R)
• M44: 27,540,669 km (0.109 R)
• M45: 28,983,091 km (0.081 R)
• M46: 29,752,174 km (0.078 R)
• M47: 30,527,839 km (0.069 R)
• M48: 32,496,248 km (0.04 R)
• M49: 33,938,671 km (0.096 R)
• M50: 34,993,336 km (0.077 R)
• M51: 35,729,806 km (0.098 R)
• M52: 36,554,090 km (0.107 R)
• M53: 37,468,133 km (0.08 R)
• M54: 38,389,506 km (0.083 R)
• M55: 39,573,125 km (0.097 R)
• M56: 40,682,692 km (0.09 R)
• M57: 41,112,337 km (0.113 R)
• M58: 41,284,524 km (0.094 R)
• M59: 43,720,875 km (0.104 R)
• M60: 43,896,653 km (0.105 R)
• M61: 46,203,452 km (0.089 R)
• M62: 47,913,954 km (0.078 R)
• M63: 48,458,341 km (0.047 R)
• M64: 48,640,401 km (0.092 R)
• M65: 49,187,481 km (0.043 R)
• M66: 49,828,508 km (0.101 R)
• M67: 50,841,285 km (0.074 R)
• M68: 51,767,894 km (0.063 R)
• M69: 51,860,944 km (0.106 R)
• M70: 53,637,868 km (0.09 R)
• M71: 54,297,594 km (0.081 R)
• M72: 55,339,693 km (0.083 R)
• M73: 55,434,837 km (0.064 R)
• M74: 55,529,832 km (0.037 R)
• M75: 56,006,301 km (0.119 R)
• M76: 57,059,171 km (0.074 R)
• M77: 58,021,983 km (0.108 R)
• M78: 58,311,904 km (0.061 R)
• M79: 58,796,002 km (0.099 R)
• M80: 59,281,597 km (0.116 R)
• M81: 60,648,323 km (0.049 R)
• M82: 60,746,310 km (0.099 R)
• M83: 61,433,862 km (0.094 R)
• M84: 61,827,902 km (0.04 R)
• M85: 62,123,957 km (0.113 R)
• M86: 62,420,609 km (0.09 R)
• M87: 62,519,493 km (0.05 R)
• M88: 62,816,744 km (0.103 R)
• M89: 63,611,558 km (0.111 R)
• M90: 63,711,190 km (0.096 R)
• M91: 64,209,800 km (0.11 R)
• M92: 66,015,895 km (0.1 R)
• M93: 67,432,138 km (0.102 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: 298 - 19,374 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit