🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642

Radius: 12.6

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.85 AU - 0.99 AU

Year: 609 Days

Day: 14.4 Hours

Environment

Temp: -162 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 34,492,932 km

• M1: 160,818 km (0.044 R)
• M2: 253,419 km (0.119 R)
• M3: 332,706 km (0.085 R)
• M4: 423,063 km (0.068 R)
• M5: 505,192 km (0.113 R)
• M6: 598,691 km (0.078 R)
• M7: 768,484 km (0.119 R)
• M8: 945,608 km (0.109 R)
• M9: 1,039,556 km (0.068 R)
• M10: 1,192,594 km (0.079 R)
• M11: 1,312,572 km (0.104 R)
• M12: 1,442,871 km (0.1 R)
• M13: 1,559,109 km (0.106 R)
• M14: 1,788,293 km (0.027 R)
• M15: 2,083,749 km (0.077 R)
• M16: 2,181,137 km (0.104 R)
• M17: 2,330,136 km (0.055 R)
• M18: 2,460,735 km (0.099 R)
• M19: 2,616,168 km (0.117 R)
• M20: 2,729,264 km (0.036 R)
• M21: 2,859,414 km (0.059 R)
• M22: 2,944,834 km (0.111 R)
• M23: 3,046,860 km (0.116 R)
• M24: 3,238,495 km (0.089 R)
• M25: 3,467,080 km (0.099 R)
• M26: 3,608,600 km (0.114 R)
• M27: 3,786,023 km (0.087 R)
• M28: 3,983,642 km (0.056 R)
• M29: 4,237,958 km (0.106 R)
• M30: 4,488,385 km (0.093 R)
• M31: 4,892,150 km (0.086 R)
• M32: 5,288,434 km (0.098 R)
• M33: 5,432,497 km (0.1 R)
• M34: 5,607,227 km (0.103 R)
• M35: 5,793,626 km (0.026 R)
• M36: 6,012,039 km (0.073 R)
• M37: 6,172,707 km (0.116 R)
• M38: 6,253,490 km (0.062 R)
• M39: 6,344,894 km (0.114 R)
• M40: 6,487,910 km (0.083 R)
• M41: 6,663,089 km (0.079 R)
• M42: 6,829,292 km (0.113 R)
• M43: 6,954,955 km (0.095 R)
• M44: 7,039,178 km (0.061 R)
• M45: 7,144,944 km (0.057 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.9

Radius: 11.3

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.64 AU - 2.32 AU

Year: 1923 Days

Day: 7.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 34,492,932 km

• M1: 149,448 km (0.103 R)
• M2: 319,391 km (0.104 R)
• M3: 477,367 km (0.082 R)
• M4: 583,432 km (0.094 R)
• M5: 692,040 km (0.073 R)
• M6: 836,701 km (0.086 R)
• M7: 1,022,801 km (0.089 R)
• M8: 1,141,432 km (0.08 R)
• M9: 1,239,867 km (0.057 R)
• M10: 1,571,077 km (0.085 R)
• M11: 1,728,454 km (0.117 R)
• M12: 1,804,300 km (0.081 R)
• M13: 1,900,791 km (0.045 R)
• M14: 2,028,996 km (0.059 R)
• M15: 2,099,307 km (0.025 R)
• M16: 2,190,861 km (0.061 R)
• M17: 2,335,971 km (0.099 R)
• M18: 2,484,521 km (0.101 R)
• M19: 2,614,372 km (0.059 R)
• M20: 2,869,586 km (0.113 R)
• M21: 2,948,873 km (0.094 R)
• M22: 3,273,501 km (0.038 R)
• M23: 3,464,387 km (0.059 R)
• M24: 3,671,132 km (0.111 R)
• M25: 3,819,682 km (0.108 R)
• M26: 3,995,460 km (0.054 R)
• M27: 4,109,902 km (0.042 R)
• M28: 4,199,661 km (0.104 R)
• M29: 4,486,141 km (0.03 R)
• M30: 4,645,163 km (0.104 R)
• M31: 5,147,064 km (0.111 R)
• M32: 5,453,890 km (0.083 R)
• M33: 5,538,562 km (0.088 R)
• M34: 5,680,680 km (0.051 R)
• M35: 5,896,250 km (0.112 R)
• M36: 6,232,098 km (0.1 R)
• M37: 6,409,820 km (0.113 R)
• M38: 6,529,199 km (0.119 R)
• M39: 6,634,366 km (0.096 R)
• M40: 6,937,751 km (0.08 R)
• M41: 7,307,856 km (0.077 R)
• M42: 7,432,770 km (0.049 R)
• M43: 7,573,991 km (0.118 R)
• M44: 7,652,829 km (0.079 R)
• M45: 7,731,966 km (0.119 R)
• M46: 8,051,507 km (0.103 R)
• M47: 8,835,699 km (0.112 R)
• M48: 9,018,807 km (0.118 R)
• M49: 9,338,198 km (0.098 R)
• M50: 9,439,775 km (0.088 R)
• M51: 9,764,103 km (0.061 R)
• M52: 9,936,291 km (0.083 R)
• M53: 10,126,729 km (0.101 R)
• M54: 10,266,154 km (0.087 R)
• M55: 10,371,022 km (0.067 R)
• M56: 10,617,260 km (0.081 R)
• M57: 10,776,582 km (0.102 R)
• M58: 10,954,603 km (0.114 R)
• M59: 11,061,865 km (0.101 R)
• M60: 11,223,281 km (0.115 R)
• M61: 11,439,899 km (0.09 R)
• M62: 11,621,511 km (0.059 R)
• M63: 11,749,118 km (0.092 R)
• M64: 11,877,323 km (0.052 R)
• M65: 12,134,930 km (0.119 R)
• M66: 12,227,382 km (0.114 R)
• M67: 12,450,432 km (0.061 R)
• M68: 12,618,431 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 320.4

Radius: 14.9

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 2.17 AU - 2.79 AU

Year: 2696 Days

Day: 6.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 34,492,932 km

• M1: 200,611 km (0.082 R)
• M2: 317,297 km (0.111 R)
• M3: 445,502 km (0.082 R)
• M4: 552,166 km (0.104 R)
• M5: 692,489 km (0.092 R)
• M6: 791,373 km (0.102 R)
• M7: 1,148,762 km (0.079 R)
• M8: 1,672,205 km (0.092 R)
• M9: 1,955,394 km (0.088 R)
• M10: 2,172,460 km (0.116 R)
• M11: 2,278,226 km (0.115 R)
• M12: 2,421,990 km (0.081 R)
• M13: 2,568,895 km (0.065 R)
• M14: 2,718,792 km (0.117 R)
• M15: 3,027,861 km (0.095 R)
• M16: 3,334,836 km (0.098 R)
• M17: 3,680,257 km (0.077 R)
• M18: 3,864,562 km (0.063 R)
• M19: 3,993,964 km (0.064 R)
• M20: 4,124,862 km (0.072 R)
• M21: 4,242,446 km (0.064 R)
• M22: 4,346,267 km (0.04 R)
• M23: 4,801,044 km (0.095 R)
• M24: 4,893,945 km (0.054 R)
• M25: 5,176,086 km (0.107 R)
• M26: 5,560,702 km (0.032 R)
• M27: 6,004,709 km (0.036 R)
• M28: 6,121,694 km (0.095 R)
• M29: 6,256,333 km (0.099 R)
• M30: 6,666,231 km (0.097 R)
• M31: 6,822,261 km (0.073 R)
• M32: 7,049,800 km (0.109 R)
• M33: 7,279,881 km (0.088 R)
• M34: 7,512,506 km (0.084 R)
• M35: 7,930,183 km (0.082 R)
• M36: 8,542,637 km (0.092 R)
• M37: 8,693,431 km (0.094 R)
• M38: 8,807,126 km (0.084 R)
• M39: 8,997,714 km (0.071 R)
• M40: 9,170,499 km (0.067 R)
• M41: 9,344,332 km (0.115 R)
• M42: 9,460,869 km (0.063 R)
• M43: 9,577,854 km (0.08 R)
• M44: 9,714,886 km (0.108 R)
• M45: 9,832,918 km (0.06 R)
• M46: 10,090,376 km (0.107 R)
• M47: 10,249,997 km (0.061 R)
• M48: 10,531,241 km (0.08 R)
• M49: 11,577,230 km (0.094 R)
• M50: 11,765,424 km (0.074 R)
• M51: 11,912,329 km (0.108 R)
• M52: 12,017,646 km (0.091 R)
• M53: 12,208,084 km (0.069 R)
• M54: 12,656,429 km (0.091 R)
• M55: 13,066,776 km (0.026 R)
• M56: 13,262,599 km (0.1 R)
• M57: 14,033,627 km (0.096 R)
• M58: 14,211,947 km (0.07 R)
• M59: 14,548,393 km (0.06 R)
• M60: 14,774,136 km (0.052 R)
• M61: 14,932,710 km (0.112 R)
• M62: 15,046,554 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.8

Radius: 10.5

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 2.28 AU - 3.18 AU

Year: 3114 Days

Day: 12.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 34,492,932 km

• M1: 133,441 km (0.108 R)
• M2: 279,150 km (0.059 R)
• M3: 423,362 km (0.045 R)
• M4: 499,507 km (0.082 R)
• M5: 604,525 km (0.119 R)
• M6: 684,709 km (0.115 R)
• M7: 866,321 km (0.111 R)
• M8: 1,174,044 km (0.05 R)
• M9: 1,319,453 km (0.083 R)
• M10: 1,427,164 km (0.12 R)
• M11: 1,628,822 km (0.095 R)
• M12: 1,768,396 km (0.109 R)
• M13: 1,936,544 km (0.082 R)
• M14: 2,022,713 km (0.091 R)
• M15: 2,211,655 km (0.092 R)
• M16: 2,288,847 km (0.037 R)
• M17: 2,566,351 km (0.089 R)
• M18: 2,661,346 km (0.105 R)
• M19: 2,841,013 km (0.11 R)
• M20: 2,981,785 km (0.109 R)
• M21: 3,125,100 km (0.083 R)
• M22: 3,344,410 km (0.044 R)
• M23: 3,433,421 km (0.097 R)
• M24: 4,079,684 km (0.094 R)
• M25: 4,159,120 km (0.068 R)
• M26: 4,303,482 km (0.049 R)
• M27: 4,564,231 km (0.082 R)
• M28: 4,646,809 km (0.059 R)
• M29: 5,016,017 km (0.114 R)
• M30: 5,152,599 km (0.11 R)
• M31: 5,238,768 km (0.115 R)
• M32: 5,605,432 km (0.116 R)
• M33: 5,872,464 km (0.037 R)
• M34: 6,016,527 km (0.089 R)
• M35: 6,180,187 km (0.108 R)
• M36: 6,345,194 km (0.106 R)
• M37: 6,548,946 km (0.094 R)
• M38: 6,698,544 km (0.116 R)
• M39: 6,773,642 km (0.116 R)
• M40: 7,346,751 km (0.109 R)
• M41: 7,599,871 km (0.114 R)
• M42: 7,955,316 km (0.111 R)
• M43: 8,034,902 km (0.109 R)
• M44: 8,215,317 km (0.07 R)
• M45: 8,580,036 km (0.107 R)
• M46: 8,661,717 km (0.101 R)
• M47: 8,929,347 km (0.068 R)
• M48: 9,241,408 km (0.108 R)
• M49: 9,451,444 km (0.118 R)
• M50: 9,641,882 km (0.081 R)
• M51: 9,790,881 km (0.107 R)
• M52: 10,048,190 km (0.085 R)
• M53: 11,032,544 km (0.048 R)
• M54: 11,434,962 km (0.053 R)
• M55: 11,525,020 km (0.117 R)
• M56: 11,819,429 km (0.11 R)
• M57: 12,001,788 km (0.117 R)
• M58: 12,392,538 km (0.113 R)
• M59: 12,717,315 km (0.092 R)
• M60: 12,927,799 km (0.048 R)
• M61: 13,068,571 km (0.053 R)
• M62: 13,375,695 km (0.042 R)
• M63: 13,613,406 km (0.035 R)
• M64: 13,756,721 km (0.085 R)
• M65: 14,749,752 km (0.11 R)
• M66: 14,921,640 km (0.077 R)
• M67: 15,094,126 km (0.095 R)
• M68: 15,540,676 km (0.075 R)
• M69: 15,640,607 km (0.09 R)
• M70: 16,345,512 km (0.108 R)
• M71: 16,625,260 km (0.114 R)
• M72: 16,906,654 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.7

Radius: 13.2

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.7 AU - 2.81 AU

Year: 3148 Days

Day: 6.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 34,492,932 km

• M1: 176,376 km (0.09 R)
• M2: 272,717 km (0.102 R)
• M3: 363,523 km (0.092 R)
• M4: 542,741 km (0.082 R)
• M5: 672,742 km (0.07 R)
• M6: 915,838 km (0.094 R)
• M7: 1,120,787 km (0.091 R)
• M8: 1,667,268 km (0.115 R)
• M9: 1,990,549 km (0.116 R)
• M10: 2,348,986 km (0.107 R)
• M11: 2,697,250 km (0.075 R)
• M12: 2,790,898 km (0.098 R)
• M13: 3,242,384 km (0.038 R)
• M14: 3,375,826 km (0.095 R)
• M15: 3,545,021 km (0.072 R)
• M16: 3,717,208 km (0.098 R)
• M17: 3,998,601 km (0.09 R)
• M18: 4,141,916 km (0.077 R)
• M19: 4,250,674 km (0.034 R)
• M20: 4,489,283 km (0.102 R)
• M21: 4,770,377 km (0.079 R)
• M22: 4,865,372 km (0.086 R)
• M23: 5,212,439 km (0.051 R)
• M24: 5,408,861 km (0.094 R)
• M25: 5,688,160 km (0.105 R)
• M26: 6,239,877 km (0.025 R)
• M27: 6,427,622 km (0.089 R)
• M28: 6,787,555 km (0.089 R)
• M29: 7,002,377 km (0.114 R)
• M30: 7,175,911 km (0.062 R)
• M31: 7,306,958 km (0.054 R)
• M32: 7,638,018 km (0.079 R)
• M33: 7,996,754 km (0.073 R)
• M34: 8,223,844 km (0.109 R)
• M35: 8,384,063 km (0.106 R)
• M36: 8,476,066 km (0.111 R)
• M37: 8,637,781 km (0.086 R)
• M38: 8,870,855 km (0.052 R)
• M39: 8,988,139 km (0.062 R)
• M40: 9,775,174 km (0.09 R)
• M41: 9,872,113 km (0.086 R)
• M42: 10,115,808 km (0.025 R)
• M43: 10,485,165 km (0.078 R)
• M44: 11,186,480 km (0.083 R)
• M45: 11,287,907 km (0.034 R)
• M46: 11,389,634 km (0.102 R)
• M47: 11,517,241 km (0.058 R)
• M48: 11,954,665 km (0.112 R)
• M49: 13,085,475 km (0.051 R)
• M50: 13,192,438 km (0.085 R)
• M51: 13,299,699 km (0.113 R)
• M52: 13,568,976 km (0.115 R)
• M53: 13,840,197 km (0.102 R)
• M54: 14,636,656 km (0.071 R)
• M55: 14,747,807 km (0.111 R)
• M56: 15,250,905 km (0.069 R)
• M57: 15,391,676 km (0.094 R)
• M58: 15,646,142 km (0.099 R)
• M59: 16,159,412 km (0.082 R)
• M60: 16,591,301 km (0.083 R)
• M61: 16,736,112 km (0.108 R)
• M62: 17,085,423 km (0.074 R)
• M63: 17,348,865 km (0.085 R)
• M64: 17,939,477 km (0.106 R)
• M65: 18,028,638 km (0.097 R)
• M66: 18,117,948 km (0.091 R)
• M67: 18,356,706 km (0.104 R)
• M68: 18,686,868 km (0.036 R)
• M69: 18,867,732 km (0.045 R)
• M70: 19,383,546 km (0.095 R)
• M71: 19,903,847 km (0.029 R)
• M72: 20,181,202 km (0.107 R)
• M73: 20,646,451 km (0.045 R)
• M74: 20,833,448 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.9

Radius: 8.8

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 3.91 AU - 5.83 AU

Year: 7418 Days

Day: 6.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 34,492,932 km

• M1: 347,516 km (0.047 R)
• M2: 513,420 km (0.07 R)
• M3: 615,595 km (0.112 R)
• M4: 687,851 km (0.04 R)
• M5: 964,757 km (0.109 R)
• M6: 1,061,098 km (0.11 R)
• M7: 1,298,958 km (0.105 R)
• M8: 1,958,835 km (0.112 R)
• M9: 2,110,377 km (0.109 R)
• M10: 2,425,281 km (0.074 R)
• M11: 2,588,342 km (0.069 R)
• M12: 2,648,630 km (0.119 R)
• M13: 4,088,659 km (0.101 R)
• M14: 4,462,953 km (0.03 R)
• M15: 4,608,512 km (0.025 R)
• M16: 4,774,117 km (0.078 R)
• M17: 4,960,366 km (0.082 R)
• M18: 5,130,160 km (0.04 R)
• M19: 6,007,551 km (0.093 R)
• M20: 6,330,683 km (0.115 R)
• M21: 7,484,381 km (0.066 R)
• M22: 8,007,974 km (0.064 R)
• M23: 8,588,414 km (0.104 R)
• M24: 10,458,537 km (0.076 R)
• M25: 11,018,631 km (0.094 R)
• M26: 13,777,066 km (0.038 R)
• M27: 14,096,159 km (0.093 R)
• M28: 14,203,121 km (0.096 R)
• M29: 14,823,055 km (0.071 R)
• M30: 15,479,340 km (0.118 R)
• M31: 15,922,150 km (0.117 R)
• M32: 16,341,174 km (0.106 R)
• M33: 17,677,083 km (0.075 R)
• M34: 17,879,190 km (0.101 R)
• M35: 17,994,829 km (0.111 R)
• M36: 18,959,436 km (0.036 R)
• M37: 19,373,672 km (0.085 R)
• M38: 19,611,832 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 102.7

Radius: 5.3

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 7.7 AU - 8.4 AU

Year: 15765 Days

Day: 19.5 Hours

Environment

Temp: -240 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 34,492,932 km

• M1: 90,507 km (0.1 R)
• M2: 218,712 km (0.107 R)
• M3: 462,407 km (0.056 R)
• M4: 663,018 km (0.079 R)
• M5: 731,085 km (0.09 R)
• M6: 1,138,290 km (0.088 R)
• M7: 1,391,111 km (0.081 R)
• M8: 1,497,026 km (0.108 R)
• M9: 1,605,634 km (0.056 R)
• M10: 1,735,784 km (0.084 R)
• M11: 2,006,257 km (0.112 R)
• M12: 2,228,111 km (0.105 R)
• M13: 2,269,250 km (0.027 R)
• M14: 2,984,926 km (0.07 R)
• M15: 3,053,293 km (0.095 R)
• M16: 4,603,725 km (0.113 R)
• M17: 5,030,677 km (0.11 R)
• M18: 5,414,545 km (0.106 R)
• M19: 5,779,564 km (0.06 R)
• M20: 5,893,408 km (0.107 R)
• M21: 6,065,595 km (0.116 R)
• M22: 6,268,749 km (0.12 R)
• M23: 6,771,099 km (0.046 R)
• M24: 7,224,979 km (0.072 R)
• M25: 8,035,051 km (0.09 R)
• M26: 8,258,102 km (0.108 R)
• M27: 9,203,411 km (0.108 R)
• M28: 9,403,124 km (0.071 R)
• M29: 9,807,188 km (0.068 R)
• M30: 10,771,645 km (0.109 R)
• M31: 10,806,651 km (0.085 R)
• M32: 11,017,584 km (0.075 R)
• M33: 12,019,291 km (0.119 R)
• M34: 12,091,996 km (0.03 R)
• M35: 12,201,202 km (0.109 R)
• M36: 12,420,662 km (0.077 R)
• M37: 13,803,096 km (0.07 R)
• M38: 13,955,537 km (0.103 R)
• M39: 14,070,129 km (0.029 R)
• M40: 14,959,338 km (0.097 R)
• M41: 15,667,834 km (0.103 R)
• M42: 16,750,922 km (0.057 R)
• M43: 17,651,202 km (0.07 R)
• M44: 18,651,264 km (0.115 R)
• M45: 19,115,616 km (0.043 R)
• M46: 20,055,988 km (0.061 R)
• M47: 21,538,503 km (0.075 R)
• M48: 21,848,021 km (0.115 R)
• M49: 23,010,845 km (0.12 R)
• M50: 23,327,245 km (0.111 R)
• M51: 23,827,500 km (0.035 R)
• M52: 23,918,904 km (0.071 R)
• M53: 24,515,351 km (0.092 R)
• M54: 24,746,031 km (0.072 R)
• M55: 25,302,834 km (0.069 R)
• M56: 26,949,907 km (0.094 R)
• M57: 27,522,567 km (0.04 R)
• M58: 27,714,352 km (0.115 R)
• M59: 27,810,394 km (0.103 R)
• M60: 27,954,606 km (0.089 R)
• M61: 28,825,715 km (0.104 R)
• M62: 30,792,777 km (0.068 R)
• M63: 30,842,593 km (0.081 R)
• M64: 32,044,163 km (0.112 R)
• M65: 32,397,513 km (0.079 R)
• M66: 33,823,779 km (0.09 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 297 - 13,352 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit