🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.5 AU - 0.52 AU

Year: 232 Days

Day: 19.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 23.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.7

Radius: 13.9

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.97 AU - 1.11 AU

Year: 674 Days

Day: 6.1 Hours

Environment

Temp: -165 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 77,787,427 km

• M1: 174,282 km (0.079 R)
• M2: 263,891 km (0.065 R)
• M3: 354,248 km (0.071 R)
• M4: 569,519 km (0.108 R)
• M5: 655,987 km (0.107 R)
• M6: 742,753 km (0.05 R)
• M7: 935,884 km (0.091 R)
• M8: 1,115,701 km (0.114 R)
• M9: 1,203,814 km (0.093 R)
• M10: 1,327,681 km (0.094 R)
• M11: 1,421,778 km (0.062 R)
• M12: 1,624,483 km (0.102 R)
• M13: 1,747,902 km (0.117 R)
• M14: 1,889,720 km (0.084 R)
• M15: 2,043,507 km (0.118 R)
• M16: 2,185,475 km (0.074 R)
• M17: 2,282,116 km (0.099 R)
• M18: 2,396,707 km (0.028 R)
• M19: 2,521,771 km (0.11 R)
• M20: 2,683,337 km (0.112 R)
• M21: 2,813,338 km (0.067 R)
• M22: 2,954,408 km (0.076 R)
• M23: 3,216,354 km (0.103 R)
• M24: 3,317,782 km (0.091 R)
• M25: 3,467,230 km (0.108 R)
• M26: 3,571,350 km (0.041 R)
• M27: 3,676,517 km (0.113 R)
• M28: 3,802,030 km (0.118 R)
• M29: 3,939,062 km (0.076 R)
• M30: 4,097,635 km (0.107 R)
• M31: 4,217,912 km (0.086 R)
• M32: 4,370,053 km (0.101 R)
• M33: 4,627,810 km (0.048 R)
• M34: 4,763,795 km (0.101 R)
• M35: 5,212,289 km (0.071 R)
• M36: 5,496,824 km (0.111 R)
• M37: 5,775,375 km (0.105 R)
• M38: 5,865,583 km (0.075 R)
• M39: 5,990,198 km (0.086 R)
• M40: 6,081,453 km (0.035 R)
• M41: 6,196,194 km (0.097 R)
• M42: 6,323,203 km (0.118 R)
• M43: 6,427,921 km (0.114 R)
• M44: 6,792,641 km (0.05 R)
• M45: 6,923,689 km (0.08 R)
• M46: 7,468,823 km (0.108 R)
• M47: 7,703,094 km (0.099 R)
• M48: 7,877,375 km (0.078 R)
• M49: 8,179,114 km (0.039 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.9

Radius: 10.7

Gravity: 8.03 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.95 AU - 1.57 AU

Year: 899 Days

Day: 9.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 77,787,427 km

• M1: 152,291 km (0.03 R)
• M2: 220,058 km (0.109 R)
• M3: 318,943 km (0.119 R)
• M4: 459,565 km (0.089 R)
• M5: 568,771 km (0.111 R)
• M6: 635,791 km (0.111 R)
• M7: 816,505 km (0.108 R)
• M8: 1,007,990 km (0.109 R)
• M9: 1,120,189 km (0.081 R)
• M10: 1,229,395 km (0.111 R)
• M11: 1,435,392 km (0.105 R)
• M12: 1,595,461 km (0.076 R)
• M13: 1,838,259 km (0.096 R)
• M14: 1,995,037 km (0.067 R)
• M15: 2,174,555 km (0.112 R)
• M16: 2,463,428 km (0.038 R)
• M17: 2,607,790 km (0.063 R)
• M18: 2,745,121 km (0.108 R)
• M19: 3,067,953 km (0.063 R)
• M20: 3,318,230 km (0.107 R)
• M21: 3,553,697 km (0.075 R)
• M22: 3,651,534 km (0.105 R)
• M23: 3,961,800 km (0.114 R)
• M24: 4,029,568 km (0.032 R)
• M25: 4,120,225 km (0.075 R)
• M26: 4,200,259 km (0.08 R)
• M27: 4,338,637 km (0.112 R)
• M28: 4,443,506 km (0.045 R)
• M29: 4,608,213 km (0.112 R)
• M30: 4,835,003 km (0.102 R)
• M31: 5,102,335 km (0.084 R)
• M32: 5,287,238 km (0.106 R)
• M33: 5,461,968 km (0.036 R)
• M34: 5,829,979 km (0.06 R)
• M35: 5,971,797 km (0.119 R)
• M36: 6,219,232 km (0.069 R)
• M37: 6,298,070 km (0.098 R)
• M38: 6,470,108 km (0.093 R)
• M39: 6,576,771 km (0.116 R)
• M40: 6,791,893 km (0.084 R)
• M41: 6,913,965 km (0.092 R)
• M42: 7,661,356 km (0.11 R)
• M43: 7,788,364 km (0.113 R)
• M44: 7,987,479 km (0.061 R)
• M45: 8,173,878 km (0.118 R)
• M46: 8,303,729 km (0.089 R)
• M47: 8,565,525 km (0.105 R)
• M48: 8,653,489 km (0.088 R)
• M49: 8,800,544 km (0.098 R)
• M50: 8,874,445 km (0.073 R)
• M51: 9,082,536 km (0.071 R)
• M52: 9,157,185 km (0.064 R)
• M53: 9,262,053 km (0.113 R)
• M54: 9,367,370 km (0.075 R)
• M55: 9,594,310 km (0.09 R)
• M56: 9,930,606 km (0.07 R)
• M57: 10,410,965 km (0.056 R)
• M58: 10,551,886 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491

Radius: 9.4

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 3.18 AU - 3.54 AU

Year: 3916 Days

Day: 6.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 77,787,427 km

• M1: 127,457 km (0.115 R)
• M2: 186,399 km (0.111 R)
• M3: 299,645 km (0.093 R)
• M4: 387,758 km (0.088 R)
• M5: 469,588 km (0.109 R)
• M6: 530,923 km (0.111 R)
• M7: 796,459 km (0.093 R)
• M8: 961,765 km (0.112 R)
• M9: 1,031,178 km (0.075 R)
• M10: 1,175,390 km (0.053 R)
• M11: 1,275,322 km (0.047 R)
• M12: 1,470,697 km (0.093 R)
• M13: 1,675,945 km (0.046 R)
• M14: 1,746,406 km (0.06 R)
• M15: 1,919,939 km (0.116 R)
• M16: 2,426,178 km (0.077 R)
• M17: 2,490,206 km (0.08 R)
• M18: 2,603,901 km (0.097 R)
• M19: 3,197,954 km (0.06 R)
• M20: 3,411,280 km (0.098 R)
• M21: 4,098,084 km (0.113 R)
• M22: 4,194,126 km (0.107 R)
• M23: 4,766,188 km (0.099 R)
• M24: 5,637,895 km (0.052 R)
• M25: 5,702,072 km (0.115 R)
• M26: 6,070,233 km (0.08 R)
• M27: 6,202,178 km (0.067 R)
• M28: 6,379,302 km (0.105 R)
• M29: 6,807,002 km (0.088 R)
• M30: 6,898,257 km (0.047 R)
• M31: 8,024,579 km (0.095 R)
• M32: 8,584,225 km (0.065 R)
• M33: 8,707,643 km (0.113 R)
• M34: 8,806,827 km (0.101 R)
• M35: 9,973,540 km (0.092 R)
• M36: 10,181,481 km (0.12 R)
• M37: 10,416,949 km (0.089 R)
• M38: 10,813,682 km (0.088 R)
• M39: 11,269,208 km (0.061 R)
• M40: 11,404,294 km (0.067 R)
• M41: 11,676,263 km (0.076 R)
• M42: 11,813,145 km (0.084 R)
• M43: 11,950,476 km (0.093 R)
• M44: 12,115,932 km (0.075 R)
• M45: 12,282,284 km (0.098 R)
• M46: 12,365,610 km (0.041 R)
• M47: 12,813,656 km (0.115 R)
• M48: 13,039,848 km (0.113 R)
• M49: 13,124,820 km (0.101 R)
• M50: 13,295,660 km (0.074 R)
• M51: 13,381,380 km (0.093 R)
• M52: 13,812,521 km (0.087 R)
• M53: 13,957,182 km (0.1 R)
• M54: 14,131,464 km (0.063 R)
• M55: 14,423,628 km (0.079 R)
• M56: 14,836,070 km (0.108 R)
• M57: 15,133,021 km (0.106 R)
• M58: 16,035,695 km (0.104 R)
• M59: 16,096,432 km (0.074 R)
• M60: 16,462,797 km (0.073 R)
• M61: 16,616,284 km (0.055 R)
• M62: 17,017,655 km (0.114 R)
• M63: 17,110,705 km (0.072 R)
• M64: 18,240,618 km (0.115 R)
• M65: 19,882,155 km (0.104 R)
• M66: 20,143,952 km (0.091 R)
• M67: 20,374,033 km (0.039 R)
• M68: 20,737,257 km (0.119 R)
• M69: 20,869,801 km (0.066 R)
• M70: 21,002,793 km (0.106 R)
• M71: 21,269,376 km (0.043 R)
• M72: 21,570,667 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371

Radius: 11

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 3.11 AU - 4.07 AU

Year: 4325 Days

Day: 13 Hours

Environment

Temp: -203 °C

Axial Tilt: 142.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 77,787,427 km

• M1: 137,480 km (0.105 R)
• M2: 269,875 km (0.11 R)
• M3: 348,862 km (0.05 R)
• M4: 423,212 km (0.095 R)
• M5: 496,366 km (0.096 R)
• M6: 629,957 km (0.101 R)
• M7: 736,470 km (0.095 R)
• M8: 807,679 km (0.113 R)
• M9: 1,388,418 km (0.063 R)
• M10: 1,544,748 km (0.066 R)
• M11: 1,652,458 km (0.075 R)
• M12: 1,903,932 km (0.097 R)
• M13: 2,078,662 km (0.106 R)
• M14: 2,183,082 km (0.088 R)
• M15: 2,602,405 km (0.116 R)
• M16: 2,780,576 km (0.072 R)
• M17: 3,391,982 km (0.106 R)
• M18: 3,515,700 km (0.107 R)
• M19: 3,914,378 km (0.104 R)
• M20: 4,007,129 km (0.074 R)
• M21: 4,500,802 km (0.077 R)
• M22: 4,578,443 km (0.083 R)
• M23: 4,695,877 km (0.113 R)
• M24: 4,774,715 km (0.115 R)
• M25: 4,933,738 km (0.119 R)
• M26: 5,175,638 km (0.119 R)
• M27: 5,483,360 km (0.106 R)
• M28: 5,587,331 km (0.099 R)
• M29: 6,311,684 km (0.116 R)
• M30: 6,464,423 km (0.113 R)
• M31: 6,552,387 km (0.074 R)
• M32: 6,818,372 km (0.045 R)
• M33: 7,110,686 km (0.08 R)
• M34: 7,224,231 km (0.079 R)
• M35: 8,320,634 km (0.082 R)
• M36: 8,827,172 km (0.079 R)
• M37: 9,769,339 km (0.113 R)
• M38: 10,329,434 km (0.103 R)
• M39: 10,432,357 km (0.076 R)
• M40: 10,926,180 km (0.041 R)
• M41: 11,347,746 km (0.053 R)
• M42: 11,507,367 km (0.068 R)
• M43: 11,909,337 km (0.077 R)
• M44: 12,288,867 km (0.091 R)
• M45: 12,398,073 km (0.099 R)
• M46: 12,672,286 km (0.105 R)
• M47: 12,920,918 km (0.062 R)
• M48: 13,004,094 km (0.096 R)
• M49: 13,115,395 km (0.111 R)
• M50: 13,732,935 km (0.052 R)
• M51: 13,817,757 km (0.087 R)
• M52: 14,302,454 km (0.088 R)
• M53: 15,200,640 km (0.096 R)
• M54: 15,288,603 km (0.11 R)
• M55: 15,789,906 km (0.118 R)
• M56: 16,416,571 km (0.106 R)
• M57: 16,717,861 km (0.057 R)
• M58: 17,694,137 km (0.112 R)
• M59: 18,345,037 km (0.116 R)
• M60: 18,595,015 km (0.119 R)
• M61: 18,688,963 km (0.059 R)
• M62: 19,224,972 km (0.042 R)
• M63: 19,574,433 km (0.086 R)
• M64: 20,505,829 km (0.103 R)
• M65: 21,025,831 km (0.105 R)
• M66: 21,320,240 km (0.099 R)
• M67: 21,451,587 km (0.07 R)
• M68: 22,145,272 km (0.069 R)
• M69: 22,245,054 km (0.079 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 102.4

Radius: 5.9

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 5.37 AU - 7.23 AU

Year: 10054 Days

Day: 21.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 77,787,427 km

• M1: 79,885 km (0.117 R)
• M2: 129,851 km (0.114 R)
• M3: 316,399 km (0.05 R)
• M4: 428,897 km (0.107 R)
• M5: 671,096 km (0.087 R)
• M6: 1,040,453 km (0.099 R)
• M7: 1,171,501 km (0.101 R)
• M8: 1,212,042 km (0.058 R)
• M9: 1,717,982 km (0.109 R)
• M10: 2,017,477 km (0.067 R)
• M11: 2,299,319 km (0.092 R)
• M12: 2,505,764 km (0.063 R)
• M13: 2,682,439 km (0.062 R)
• M14: 2,772,348 km (0.077 R)
• M15: 2,881,405 km (0.08 R)
• M16: 2,992,107 km (0.072 R)
• M17: 3,217,401 km (0.115 R)
• M18: 3,684,745 km (0.094 R)
• M19: 3,967,036 km (0.094 R)
• M20: 4,110,949 km (0.105 R)
• M21: 4,467,292 km (0.094 R)
• M22: 4,509,927 km (0.099 R)
• M23: 4,660,123 km (0.107 R)
• M24: 4,790,124 km (0.061 R)
• M25: 4,877,489 km (0.119 R)
• M26: 5,412,601 km (0.109 R)
• M27: 5,458,078 km (0.105 R)
• M28: 5,849,426 km (0.108 R)
• M29: 6,013,236 km (0.108 R)
• M30: 7,503,530 km (0.061 R)
• M31: 7,860,919 km (0.055 R)
• M32: 8,119,574 km (0.092 R)
• M33: 8,223,844 km (0.088 R)
• M34: 8,302,383 km (0.104 R)
• M35: 8,433,730 km (0.086 R)
• M36: 8,618,932 km (0.094 R)
• M37: 9,046,931 km (0.104 R)
• M38: 9,896,049 km (0.095 R)
• M39: 9,951,699 km (0.09 R)
• M40: 10,175,348 km (0.079 R)
• M41: 10,627,582 km (0.054 R)
• M42: 10,799,021 km (0.085 R)
• M43: 11,522,477 km (0.119 R)
• M44: 12,023,480 km (0.062 R)
• M45: 12,261,640 km (0.06 R)
• M46: 12,471,376 km (0.052 R)
• M47: 12,985,544 km (0.103 R)
• M48: 13,199,319 km (0.064 R)
• M49: 13,630,460 km (0.056 R)
• M50: 13,847,676 km (0.027 R)
• M51: 14,066,089 km (0.092 R)
• M52: 14,537,771 km (0.091 R)
• M53: 14,950,961 km (0.112 R)
• M54: 15,271,399 km (0.093 R)
• M55: 15,367,890 km (0.119 R)
• M56: 16,907,103 km (0.076 R)
• M57: 17,073,605 km (0.12 R)
• M58: 17,140,475 km (0.083 R)
• M59: 18,323,495 km (0.057 R)
• M60: 18,528,893 km (0.096 R)
• M61: 18,666,224 km (0.107 R)
• M62: 18,942,082 km (0.094 R)
• M63: 19,323,557 km (0.118 R)
• M64: 19,497,689 km (0.116 R)
• M65: 19,602,407 km (0.081 R)
• M66: 19,707,425 km (0.118 R)
• M67: 19,988,220 km (0.077 R)
• M68: 20,164,447 km (0.106 R)
• M69: 20,376,576 km (0.114 R)
• M70: 20,589,454 km (0.078 R)
• M71: 20,767,326 km (0.109 R)
• M72: 20,838,684 km (0.094 R)
• M73: 21,664,614 km (0.091 R)
• M74: 21,954,385 km (0.037 R)
• M75: 22,027,090 km (0.069 R)
• M76: 22,391,510 km (0.058 R)
• M77: 23,052,583 km (0.101 R)
• M78: 23,422,688 km (0.085 R)
• M79: 23,496,889 km (0.088 R)
• M80: 23,720,089 km (0.096 R)
• M81: 23,757,339 km (0.093 R)
• M82: 24,018,836 km (0.095 R)
• M83: 24,431,576 km (0.083 R)
• M84: 24,469,125 km (0.107 R)
• M85: 24,808,862 km (0.099 R)
• M86: 24,998,103 km (0.049 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 821.1

Radius: 4.2

Gravity: 46.55 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 8.55 AU - 10.63 AU

Year: 18883 Days

Day: 18 Hours

Environment

Temp: -235 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 77,787,427 km

• M1: 272,119 km (0.025 R)
• M2: 378,183 km (0.113 R)
• M3: 674,088 km (0.104 R)
• M4: 794,215 km (0.094 R)
• M5: 1,137,991 km (0.113 R)
• M6: 1,713,195 km (0.108 R)
• M7: 1,778,270 km (0.118 R)
• M8: 2,081,505 km (0.114 R)
• M9: 2,473,601 km (0.11 R)
• M10: 2,584,602 km (0.116 R)
• M11: 2,697,100 km (0.025 R)
• M12: 3,529,014 km (0.099 R)
• M13: 5,027,236 km (0.11 R)
• M14: 5,214,982 km (0.096 R)
• M15: 6,490,154 km (0.116 R)
• M16: 6,541,017 km (0.105 R)
• M17: 6,797,578 km (0.099 R)
• M18: 7,320,273 km (0.077 R)
• M19: 7,693,818 km (0.089 R)
• M20: 8,293,407 km (0.044 R)
• M21: 9,827,533 km (0.063 R)
• M22: 10,358,007 km (0.084 R)
• M23: 10,837,169 km (0.112 R)
• M24: 11,507,966 km (0.027 R)
• M25: 11,569,600 km (0.083 R)
• M26: 11,755,251 km (0.04 R)
• M27: 12,192,077 km (0.114 R)
• M28: 12,889,353 km (0.084 R)
• M29: 13,275,016 km (0.088 R)
• M30: 14,788,498 km (0.071 R)
• M31: 16,563,925 km (0.031 R)
• M32: 17,123,720 km (0.101 R)
• M33: 20,684,299 km (0.06 R)
• M34: 20,984,692 km (0.081 R)
• M35: 21,818,401 km (0.037 R)
• M36: 21,894,845 km (0.081 R)
• M37: 22,585,688 km (0.051 R)
• M38: 23,361,802 km (0.057 R)
• M39: 23,596,371 km (0.067 R)
• M40: 23,674,761 km (0.105 R)
• M41: 24,462,992 km (0.11 R)
• M42: 26,470,894 km (0.106 R)
• M43: 27,042,508 km (0.077 R)
• M44: 27,371,025 km (0.097 R)
• M45: 27,618,310 km (0.08 R)
• M46: 27,783,466 km (0.101 R)
• M47: 28,031,948 km (0.106 R)
• M48: 28,781,733 km (0.076 R)
• M49: 30,471,441 km (0.073 R)
• M50: 34,300,249 km (0.077 R)
• M51: 34,744,853 km (0.039 R)
• M52: 35,101,944 km (0.085 R)
• M53: 35,549,840 km (0.087 R)
• M54: 36,090,038 km (0.027 R)
• M55: 36,451,616 km (0.118 R)
• M56: 36,542,122 km (0.111 R)
• M57: 36,996,152 km (0.034 R)
• M58: 39,108,773 km (0.119 R)
• M59: 39,759,374 km (0.102 R)
• M60: 41,543,478 km (0.111 R)
• M61: 42,207,394 km (0.105 R)
• M62: 43,353,463 km (0.076 R)
• M63: 45,774,106 km (0.111 R)
• M64: 46,263,441 km (0.083 R)
• M65: 46,852,856 km (0.077 R)
• M66: 47,741,767 km (0.105 R)
• M67: 48,835,776 km (0.115 R)
• M68: 50,240,051 km (0.089 R)
• M69: 51,149,756 km (0.048 R)
• M70: 51,759,367 km (0.093 R)
• M71: 54,221,299 km (0.092 R)
• M72: 55,154,341 km (0.116 R)
• M73: 56,616,212 km (0.054 R)
• M74: 57,036,283 km (0.104 R)
• M75: 57,773,800 km (0.099 R)
• M76: 61,077,819 km (0.041 R)
• M77: 62,264,878 km (0.115 R)
• M78: 63,024,237 km (0.095 R)
• M79: 63,241,752 km (0.056 R)
• M80: 63,459,566 km (0.042 R)
• M81: 64,990,850 km (0.12 R)
• M82: 65,430,668 km (0.114 R)
• M83: 66,755,806 km (0.097 R)
• M84: 67,310,664 km (0.051 R)
• M85: 67,532,967 km (0.1 R)
• M86: 69,096,115 km (0.087 R)
• M87: 69,657,406 km (0.075 R)
• M88: 70,332,841 km (0.105 R)
• M89: 71,463,352 km (0.099 R)
• M90: 73,513,291 km (0.107 R)
• M91: 76,160,725 km (0.103 R)
• M92: 77,437,842 km (0.08 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 541 - 10,975 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit