🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.9

Radius: 13.1

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.73 AU - 0.81 AU

Year: 451 Days

Day: 5.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,774,095 km

• M1: 163,361 km (0.027 R)
• M2: 246,836 km (0.094 R)
• M3: 330,761 km (0.037 R)
• M4: 539,151 km (0.116 R)
• M5: 639,381 km (0.066 R)
• M6: 820,245 km (0.094 R)
• M7: 903,422 km (0.116 R)
• M8: 1,013,526 km (0.117 R)
• M9: 1,099,844 km (0.046 R)
• M10: 1,212,042 km (0.032 R)
• M11: 1,339,499 km (0.073 R)
• M12: 1,549,984 km (0.079 R)
• M13: 1,648,718 km (0.118 R)
• M14: 1,791,285 km (0.073 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 599.5

Radius: 13.7

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.05 AU - 1.59 AU

Year: 1011 Days

Day: 6.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 50,774,095 km

• M1: 184,903 km (0.045 R)
• M2: 279,748 km (0.108 R)
• M3: 417,079 km (0.105 R)
• M4: 512,822 km (0.109 R)
• M5: 660,923 km (0.1 R)
• M6: 761,603 km (0.107 R)
• M7: 868,116 km (0.098 R)
• M8: 961,466 km (0.099 R)
• M9: 1,071,719 km (0.119 R)
• M10: 1,200,523 km (0.099 R)
• M11: 1,306,139 km (0.11 R)
• M12: 1,422,526 km (0.101 R)
• M13: 1,596,508 km (0.082 R)
• M14: 1,698,085 km (0.059 R)
• M15: 1,793,828 km (0.082 R)
• M16: 2,118,306 km (0.119 R)
• M17: 2,265,660 km (0.08 R)
• M18: 2,398,802 km (0.119 R)
• M19: 2,552,888 km (0.108 R)
• M20: 2,672,865 km (0.116 R)
• M21: 2,823,510 km (0.11 R)
• M22: 2,947,826 km (0.095 R)
• M23: 3,113,431 km (0.115 R)
• M24: 3,252,108 km (0.119 R)
• M25: 3,372,684 km (0.105 R)
• M26: 3,484,583 km (0.085 R)
• M27: 3,618,473 km (0.096 R)
• M28: 3,712,122 km (0.037 R)
• M29: 3,849,004 km (0.091 R)
• M30: 4,149,546 km (0.118 R)
• M31: 4,236,761 km (0.041 R)
• M32: 4,637,384 km (0.119 R)
• M33: 5,261,208 km (0.114 R)
• M34: 5,391,507 km (0.104 R)
• M35: 5,499,068 km (0.09 R)
• M36: 5,643,430 km (0.091 R)
• M37: 5,789,138 km (0.076 R)
• M38: 6,034,928 km (0.097 R)
• M39: 6,121,694 km (0.068 R)
• M40: 6,334,273 km (0.064 R)
• M41: 6,473,249 km (0.105 R)
• M42: 6,857,267 km (0.1 R)
• M43: 7,052,044 km (0.092 R)
• M44: 7,196,106 km (0.077 R)
• M45: 7,380,860 km (0.114 R)
• M46: 7,487,074 km (0.051 R)
• M47: 7,809,158 km (0.111 R)
• M48: 7,971,771 km (0.113 R)
• M49: 8,108,354 km (0.119 R)
• M50: 8,300,737 km (0.091 R)
• M51: 8,397,377 km (0.111 R)
• M52: 8,760,152 km (0.047 R)
• M53: 8,886,862 km (0.096 R)
• M54: 9,142,225 km (0.101 R)
• M55: 9,270,879 km (0.067 R)
• M56: 9,414,493 km (0.115 R)
• M57: 9,544,494 km (0.081 R)
• M58: 9,820,651 km (0.098 R)
• M59: 9,908,316 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 965.4

Radius: 13.2

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.39 AU - 1.45 AU

Year: 1128 Days

Day: 6.1 Hours

Environment

Temp: -188 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 50,774,095 km

• M1: 169,943 km (0.069 R)
• M2: 278,402 km (0.057 R)
• M3: 393,592 km (0.084 R)
• M4: 526,734 km (0.078 R)
• M5: 666,159 km (0.102 R)
• M6: 819,946 km (0.095 R)
• M7: 942,018 km (0.11 R)
• M8: 1,086,380 km (0.075 R)
• M9: 1,263,653 km (0.049 R)
• M10: 1,407,417 km (0.109 R)
• M11: 1,921,136 km (0.109 R)
• M12: 2,138,502 km (0.057 R)
• M13: 2,458,791 km (0.059 R)
• M14: 2,739,586 km (0.091 R)
• M15: 2,861,658 km (0.116 R)
• M16: 3,019,633 km (0.11 R)
• M17: 3,356,228 km (0.117 R)
• M18: 3,451,372 km (0.116 R)
• M19: 3,559,382 km (0.055 R)
• M20: 4,142,066 km (0.084 R)
• M21: 4,231,525 km (0.103 R)
• M22: 4,451,285 km (0.076 R)
• M23: 4,542,839 km (0.029 R)
• M24: 4,635,140 km (0.116 R)
• M25: 4,728,041 km (0.088 R)
• M26: 4,956,327 km (0.072 R)
• M27: 5,229,642 km (0.065 R)
• M28: 5,326,432 km (0.113 R)
• M29: 5,451,945 km (0.045 R)
• M30: 5,648,965 km (0.1 R)
• M31: 5,762,660 km (0.092 R)
• M32: 6,239,578 km (0.106 R)
• M33: 6,386,782 km (0.096 R)
• M34: 6,699,441 km (0.065 R)
• M35: 7,017,187 km (0.058 R)
• M36: 7,108,891 km (0.047 R)
• M37: 7,448,628 km (0.048 R)
• M38: 7,589,250 km (0.067 R)
• M39: 7,746,477 km (0.064 R)
• M40: 8,032,059 km (0.118 R)
• M41: 8,695,825 km (0.105 R)
• M42: 8,827,471 km (0.101 R)
• M43: 8,959,716 km (0.081 R)
• M44: 9,580,098 km (0.118 R)
• M45: 10,301,160 km (0.11 R)
• M46: 10,388,076 km (0.117 R)
• M47: 10,510,298 km (0.111 R)
• M48: 10,685,776 km (0.093 R)
• M49: 10,791,542 km (0.087 R)
• M50: 11,146,537 km (0.088 R)
• M51: 11,451,418 km (0.072 R)
• M52: 11,686,286 km (0.102 R)
• M53: 12,271,513 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.1

Radius: 14.1

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2.86 AU - 2.9 AU

Year: 3259 Days

Day: 7.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 50,774,095 km

• M1: 419,772 km (0.085 R)
• M2: 539,450 km (0.052 R)
• M3: 778,358 km (0.098 R)
• M4: 889,210 km (0.028 R)
• M5: 1,192,295 km (0.103 R)
• M6: 1,445,265 km (0.076 R)
• M7: 1,614,460 km (0.087 R)
• M8: 1,745,957 km (0.067 R)
• M9: 1,835,566 km (0.115 R)
• M10: 2,004,462 km (0.102 R)
• M11: 2,098,709 km (0.099 R)
• M12: 2,457,743 km (0.116 R)
• M13: 2,907,734 km (0.071 R)
• M14: 3,516,448 km (0.12 R)
• M15: 3,650,786 km (0.05 R)
• M16: 4,205,196 km (0.063 R)
• M17: 4,638,432 km (0.107 R)
• M18: 5,437,135 km (0.112 R)
• M19: 5,525,996 km (0.052 R)
• M20: 5,660,335 km (0.119 R)
• M21: 6,024,007 km (0.032 R)
• M22: 6,116,010 km (0.107 R)
• M23: 6,231,798 km (0.063 R)
• M24: 6,489,256 km (0.11 R)
• M25: 7,208,972 km (0.116 R)
• M26: 7,528,812 km (0.081 R)
• M27: 7,853,439 km (0.062 R)
• M28: 8,030,115 km (0.113 R)
• M29: 8,284,880 km (0.116 R)
• M30: 8,698,069 km (0.09 R)
• M31: 8,959,716 km (0.051 R)
• M32: 9,197,576 km (0.088 R)
• M33: 10,087,235 km (0.101 R)
• M34: 10,334,670 km (0.077 R)
• M35: 10,723,624 km (0.102 R)
• M36: 10,863,648 km (0.062 R)
• M37: 11,117,366 km (0.118 R)
• M38: 11,259,185 km (0.088 R)
• M39: 11,861,316 km (0.106 R)
• M40: 12,006,276 km (0.091 R)
• M41: 12,297,843 km (0.105 R)
• M42: 12,591,802 km (0.067 R)
• M43: 12,739,755 km (0.086 R)
• M44: 13,699,874 km (0.048 R)
• M45: 13,943,569 km (0.114 R)
• M46: 14,157,942 km (0.078 R)
• M47: 14,714,297 km (0.057 R)
• M48: 16,168,538 km (0.073 R)
• M49: 16,458,459 km (0.097 R)
• M50: 16,555,548 km (0.034 R)
• M51: 16,685,249 km (0.118 R)
• M52: 17,076,148 km (0.094 R)
• M53: 17,503,250 km (0.118 R)
• M54: 17,900,582 km (0.104 R)
• M55: 18,401,436 km (0.084 R)
• M56: 18,974,695 km (0.106 R)
• M57: 19,212,406 km (0.085 R)
• M58: 19,416,906 km (0.101 R)
• M59: 19,931,523 km (0.064 R)
• M60: 20,069,602 km (0.073 R)
• M61: 20,242,537 km (0.115 R)
• M62: 21,361,080 km (0.093 R)
• M63: 21,927,906 km (0.111 R)
• M64: 22,248,943 km (0.109 R)
• M65: 22,607,380 km (0.114 R)
• M66: 23,004,113 km (0.062 R)
• M67: 23,330,237 km (0.114 R)
• M68: 24,097,375 km (0.12 R)
• M69: 24,318,031 km (0.055 R)
• M70: 24,798,540 km (0.118 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.1

Radius: 7.5

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 6.11 AU - 7.15 AU

Year: 11384 Days

Day: 24.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 50,774,095 km

• M1: 211,531 km (0.104 R)
• M2: 318,344 km (0.042 R)
• M3: 511,625 km (0.073 R)
• M4: 696,976 km (0.094 R)
• M5: 763,697 km (0.068 R)
• M6: 1,142,778 km (0.115 R)
• M7: 1,317,808 km (0.064 R)
• M8: 1,387,520 km (0.094 R)
• M9: 2,053,530 km (0.04 R)
• M10: 2,505,615 km (0.078 R)
• M11: 2,932,866 km (0.103 R)
• M12: 3,211,417 km (0.057 R)
• M13: 3,954,919 km (0.099 R)
• M14: 4,138,625 km (0.08 R)
• M15: 4,450,985 km (0.12 R)
• M16: 4,578,144 km (0.066 R)
• M17: 4,663,564 km (0.093 R)
• M18: 4,836,050 km (0.028 R)
• M19: 5,054,613 km (0.084 R)
• M20: 5,365,926 km (0.056 R)
• M21: 5,456,134 km (0.114 R)
• M22: 5,592,268 km (0.096 R)
• M23: 5,844,789 km (0.115 R)
• M24: 5,914,352 km (0.091 R)
• M25: 6,171,660 km (0.108 R)
• M26: 6,218,783 km (0.08 R)
• M27: 6,624,643 km (0.083 R)
• M28: 6,697,197 km (0.12 R)
• M29: 7,063,862 km (0.117 R)
• M30: 7,137,913 km (0.06 R)
• M31: 7,537,638 km (0.072 R)
• M32: 7,638,617 km (0.063 R)
• M33: 7,689,331 km (0.103 R)
• M34: 7,995,857 km (0.089 R)
• M35: 8,098,930 km (0.075 R)
• M36: 8,384,661 km (0.041 R)
• M37: 9,153,894 km (0.113 R)
• M38: 10,787,203 km (0.064 R)
• M39: 11,389,933 km (0.091 R)
• M40: 11,739,394 km (0.107 R)
• M41: 11,827,208 km (0.073 R)
• M42: 12,062,675 km (0.12 R)
• M43: 12,151,386 km (0.079 R)
• M44: 12,270,017 km (0.115 R)
• M45: 12,538,246 km (0.101 R)
• M46: 12,899,076 km (0.111 R)
• M47: 13,141,425 km (0.11 R)
• M48: 13,569,125 km (0.1 R)
• M49: 14,125,929 km (0.114 R)
• M50: 14,532,685 km (0.089 R)
• M51: 15,165,933 km (0.09 R)
• M52: 16,132,634 km (0.079 R)
• M53: 16,262,934 km (0.086 R)
• M54: 16,459,207 km (0.033 R)
• M55: 16,557,642 km (0.109 R)
• M56: 16,689,138 km (0.082 R)
• M57: 17,052,661 km (0.116 R)
• M58: 18,532,783 km (0.047 R)
• M59: 18,874,913 km (0.118 R)
• M60: 19,115,616 km (0.094 R)
• M61: 19,322,809 km (0.117 R)
• M62: 19,530,600 km (0.108 R)
• M63: 20,510,616 km (0.09 R)
• M64: 21,148,950 km (0.049 R)
• M65: 21,542,243 km (0.046 R)
• M66: 22,046,388 km (0.119 R)
• M67: 22,882,939 km (0.042 R)
• M68: 23,915,464 km (0.094 R)
• M69: 24,250,563 km (0.069 R)
• M70: 24,624,707 km (0.088 R)
• M71: 24,963,097 km (0.081 R)
• M72: 25,340,832 km (0.066 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 411.1

Radius: 4.3

Gravity: 22.23 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 6.48 AU - 10.8 AU

Year: 16936 Days

Day: 17.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 50,774,095 km

• M1: 62,981 km (0.106 R)
• M2: 138,528 km (0.093 R)
• M3: 228,137 km (0.039 R)
• M4: 429,196 km (0.06 R)
• M5: 601,383 km (0.06 R)
• M6: 695,181 km (0.096 R)
• M7: 855,101 km (0.115 R)
• M8: 1,026,541 km (0.063 R)
• M9: 1,185,414 km (0.041 R)
• M10: 1,303,745 km (0.041 R)
• M11: 1,681,181 km (0.082 R)
• M12: 1,895,704 km (0.091 R)
• M13: 1,950,607 km (0.092 R)
• M14: 2,062,207 km (0.05 R)
• M15: 2,320,861 km (0.119 R)
• M16: 2,379,803 km (0.088 R)
• M17: 2,743,475 km (0.113 R)
• M18: 2,774,592 km (0.093 R)
• M19: 2,837,124 km (0.073 R)
• M20: 3,222,338 km (0.102 R)
• M21: 3,288,161 km (0.057 R)
• M22: 4,583,230 km (0.074 R)
• M23: 4,806,580 km (0.067 R)
• M24: 6,466,817 km (0.087 R)
• M25: 6,675,207 km (0.043 R)
• M26: 6,970,662 km (0.097 R)
• M27: 7,141,503 km (0.063 R)
• M28: 8,105,362 km (0.053 R)
• M29: 8,511,221 km (0.119 R)
• M30: 8,970,038 km (0.07 R)
• M31: 9,720,570 km (0.095 R)
• M32: 10,345,142 km (0.104 R)
• M33: 10,883,843 km (0.09 R)
• M34: 11,131,578 km (0.103 R)
• M35: 11,331,291 km (0.081 R)
• M36: 11,431,521 km (0.115 R)
• M37: 11,988,175 km (0.096 R)
• M38: 13,285,637 km (0.106 R)
• M39: 13,338,445 km (0.113 R)
• M40: 14,572,478 km (0.028 R)
• M41: 14,681,535 km (0.108 R)
• M42: 15,396,762 km (0.103 R)
• M43: 15,507,914 km (0.081 R)
• M44: 15,563,564 km (0.067 R)
• M45: 16,067,111 km (0.112 R)
• M46: 16,918,322 km (0.096 R)
• M47: 17,090,210 km (0.055 R)
• M48: 17,609,764 km (0.109 R)
• M49: 19,438,299 km (0.102 R)
• M50: 19,859,417 km (0.1 R)
• M51: 20,283,676 km (0.045 R)
• M52: 20,588,407 km (0.062 R)
• M53: 21,512,024 km (0.119 R)
• M54: 23,208,015 km (0.099 R)
• M55: 24,491,864 km (0.106 R)
• M56: 25,338,588 km (0.102 R)
• M57: 25,864,574 km (0.111 R)
• M58: 25,996,520 km (0.095 R)
• M59: 27,328,988 km (0.055 R)
• M60: 27,396,307 km (0.079 R)
• M61: 27,530,795 km (0.099 R)
• M62: 28,207,127 km (0.111 R)
• M63: 28,342,962 km (0.027 R)
• M64: 28,820,329 km (0.065 R)
• M65: 29,025,727 km (0.097 R)
• M66: 29,921,369 km (0.096 R)
• M67: 30,476,976 km (0.081 R)
• M68: 32,022,621 km (0.109 R)
• M69: 32,662,302 km (0.081 R)
• M70: 34,460,917 km (0.094 R)
• M71: 34,533,472 km (0.116 R)
• M72: 34,897,443 km (0.103 R)
• M73: 36,070,141 km (0.032 R)
• M74: 37,405,003 km (0.106 R)
• M75: 42,513,321 km (0.105 R)
• M76: 43,137,743 km (0.062 R)
• M77: 43,765,156 km (0.069 R)
• M78: 44,870,385 km (0.077 R)
• M79: 45,745,234 km (0.098 R)
• M80: 46,144,810 km (0.105 R)
• M81: 46,465,248 km (0.1 R)
• M82: 46,545,433 km (0.083 R)
• M83: 46,786,435 km (0.109 R)
• M84: 47,108,369 km (0.11 R)
• M85: 47,511,685 km (0.066 R)
• M86: 49,874,285 km (0.113 R)
• M87: 50,532,665 km (0.114 R)
• M88: 51,359,642 km (0.08 R)
• M89: 51,941,278 km (0.056 R)
• M90: 52,274,582 km (0.094 R)
• M91: 52,692,260 km (0.105 R)
• M92: 54,289,516 km (0.043 R)
• M93: 55,221,361 km (0.092 R)
• M94: 55,561,547 km (0.036 R)
• M95: 57,015,189 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 160.9

Radius: 5.5

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 8.22 AU - 12.66 AU

Year: 22495 Days

Day: 20.8 Hours

Environment

Temp: -245 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 50,774,095 km

• M1: 318,793 km (0.102 R)
• M2: 358,586 km (0.103 R)
• M3: 400,473 km (0.1 R)
• M4: 1,237,324 km (0.113 R)
• M5: 1,392,008 km (0.041 R)
• M6: 1,671,906 km (0.036 R)
• M7: 1,744,610 km (0.071 R)
• M8: 1,793,678 km (0.083 R)
• M9: 1,893,161 km (0.12 R)
• M10: 2,123,691 km (0.117 R)
• M11: 2,781,623 km (0.056 R)
• M12: 4,334,299 km (0.093 R)
• M13: 5,336,455 km (0.114 R)
• M14: 5,408,113 km (0.111 R)
• M15: 5,552,325 km (0.037 R)
• M16: 6,674,608 km (0.079 R)
• M17: 7,182,194 km (0.086 R)
• M18: 7,261,331 km (0.054 R)
• M19: 7,661,655 km (0.053 R)
• M20: 7,702,196 km (0.078 R)
• M21: 8,400,220 km (0.098 R)
• M22: 8,990,234 km (0.099 R)
• M23: 9,376,495 km (0.09 R)
• M24: 9,419,729 km (0.033 R)
• M25: 9,899,938 km (0.098 R)
• M26: 10,432,956 km (0.071 R)
• M27: 11,341,763 km (0.11 R)
• M28: 13,088,916 km (0.043 R)
• M29: 13,380,034 km (0.088 R)
• M30: 13,673,395 km (0.108 R)
• M31: 14,817,071 km (0.088 R)
• M32: 17,620,385 km (0.108 R)
• M33: 18,211,147 km (0.079 R)
• M34: 19,411,969 km (0.109 R)
• M35: 19,632,925 km (0.111 R)
• M36: 25,302,984 km (0.037 R)
• M37: 26,824,693 km (0.077 R)
• M38: 30,275,318 km (0.107 R)
• M39: 30,339,346 km (0.069 R)
• M40: 30,788,738 km (0.089 R)
• M41: 30,853,065 km (0.078 R)
• M42: 32,280,827 km (0.076 R)
• M43: 32,673,970 km (0.083 R)
• M44: 33,068,609 km (0.089 R)
• M45: 34,195,380 km (0.106 R)
• M46: 35,132,910 km (0.049 R)
• M47: 35,469,655 km (0.099 R)
• M48: 35,875,215 km (0.089 R)
• M49: 36,418,554 km (0.098 R)
• M50: 36,827,705 km (0.116 R)
• M51: 39,944,875 km (0.078 R)
• M52: 40,790,253 km (0.102 R)
• M53: 41,286,170 km (0.114 R)
• M54: 41,570,406 km (0.038 R)
• M55: 45,031,801 km (0.077 R)
• M56: 45,544,324 km (0.11 R)
• M57: 48,509,503 km (0.069 R)
• M58: 49,713,018 km (0.077 R)
• M59: 50,242,594 km (0.061 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 401 - 17,406 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit