🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.57 AU - 0.77 AU

Year: 354 Days

Day: 26.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 113.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.2

Radius: 8.4

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.66 AU - 0.9 AU

Year: 445 Days

Day: 7.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 59,360,069 km

• M1: 108,458 km (0.1 R)
• M2: 267,182 km (0.101 R)
• M3: 348,862 km (0.033 R)
• M4: 411,993 km (0.12 R)
• M5: 504,294 km (0.068 R)
• M6: 597,793 km (0.098 R)
• M7: 655,538 km (0.103 R)
• M8: 722,558 km (0.084 R)
• M9: 875,596 km (0.093 R)
• M10: 994,377 km (0.068 R)
• M11: 1,085,183 km (0.112 R)
• M12: 1,152,951 km (0.112 R)
• M13: 1,329,027 km (0.081 R)
• M14: 1,462,170 km (0.057 R)
• M15: 1,575,864 km (0.073 R)
• M16: 1,663,080 km (0.063 R)
• M17: 1,741,918 km (0.081 R)
• M18: 1,796,970 km (0.115 R)
• M19: 1,857,706 km (0.066 R)
• M20: 1,929,364 km (0.109 R)
• M21: 2,007,155 km (0.045 R)
• M22: 2,139,399 km (0.108 R)
• M23: 2,203,876 km (0.103 R)
• M24: 2,279,872 km (0.069 R)
• M25: 2,558,872 km (0.08 R)
• M26: 2,656,260 km (0.099 R)
• M27: 2,760,679 km (0.107 R)
• M28: 2,854,776 km (0.114 R)
• M29: 2,908,033 km (0.084 R)
• M30: 3,088,448 km (0.105 R)
• M31: 3,155,468 km (0.032 R)
• M32: 3,253,903 km (0.071 R)
• M33: 3,322,120 km (0.077 R)
• M34: 3,384,652 km (0.079 R)
• M35: 3,657,818 km (0.091 R)
• M36: 3,748,324 km (0.09 R)
• M37: 3,859,176 km (0.094 R)
• M38: 4,004,436 km (0.095 R)
• M39: 4,137,877 km (0.049 R)
• M40: 4,306,923 km (0.088 R)
• M41: 4,450,686 km (0.066 R)
• M42: 4,554,358 km (0.103 R)
• M43: 4,658,926 km (0.063 R)
• M44: 4,813,611 km (0.038 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 653.5

Radius: 10.4

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.91 AU - 1.21 AU

Year: 705 Days

Day: 10.5 Hours

Environment

Temp: -152 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 59,360,069 km

• M1: 131,347 km (0.079 R)
• M2: 220,507 km (0.071 R)
• M3: 288,724 km (0.099 R)
• M4: 357,539 km (0.075 R)
• M5: 434,283 km (0.092 R)
• M6: 530,923 km (0.109 R)
• M7: 636,240 km (0.054 R)
• M8: 724,203 km (0.073 R)
• M9: 843,134 km (0.066 R)
• M10: 918,980 km (0.076 R)
• M11: 1,020,108 km (0.086 R)
• M12: 1,167,312 km (0.041 R)
• M13: 1,265,448 km (0.057 R)
• M14: 1,392,008 km (0.104 R)
• M15: 1,596,957 km (0.101 R)
• M16: 1,769,444 km (0.078 R)
• M17: 1,847,384 km (0.038 R)
• M18: 1,941,032 km (0.068 R)
• M19: 2,051,136 km (0.062 R)
• M20: 2,140,596 km (0.047 R)
• M21: 2,223,922 km (0.057 R)
• M22: 2,331,632 km (0.06 R)
• M23: 2,512,347 km (0.106 R)
• M24: 2,616,616 km (0.101 R)
• M25: 2,812,889 km (0.107 R)
• M26: 2,938,102 km (0.1 R)
• M27: 3,005,720 km (0.092 R)
• M28: 3,254,950 km (0.066 R)
• M29: 3,413,225 km (0.119 R)
• M30: 3,582,869 km (0.107 R)
• M31: 3,691,627 km (0.12 R)
• M32: 3,801,431 km (0.119 R)
• M33: 3,968,084 km (0.044 R)
• M34: 4,061,881 km (0.029 R)
• M35: 4,156,278 km (0.08 R)
• M36: 4,222,849 km (0.093 R)
• M37: 4,289,719 km (0.085 R)
• M38: 4,570,813 km (0.118 R)
• M39: 4,659,375 km (0.085 R)
• M40: 4,948,249 km (0.114 R)
• M41: 5,161,276 km (0.079 R)
• M42: 5,335,857 km (0.099 R)
• M43: 5,450,000 km (0.078 R)
• M44: 5,722,717 km (0.101 R)
• M45: 5,914,202 km (0.104 R)
• M46: 5,989,300 km (0.052 R)
• M47: 6,107,931 km (0.093 R)
• M48: 6,270,993 km (0.095 R)
• M49: 6,479,533 km (0.075 R)
• M50: 6,735,046 km (0.101 R)
• M51: 6,835,875 km (0.064 R)
• M52: 7,005,219 km (0.109 R)
• M53: 7,084,656 km (0.071 R)
• M54: 7,164,541 km (0.104 R)
• M55: 7,579,675 km (0.103 R)
• M56: 7,684,693 km (0.074 R)
• M57: 7,967,134 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 721.5

Radius: 12.4

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.89 AU - 4.43 AU

Year: 4521 Days

Day: 8.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 59,360,069 km

• M1: 333,304 km (0.088 R)
• M2: 553,363 km (0.057 R)
• M3: 694,733 km (0.097 R)
• M4: 977,772 km (0.1 R)
• M5: 1,297,762 km (0.058 R)
• M6: 1,508,994 km (0.11 R)
• M7: 1,683,126 km (0.091 R)
• M8: 2,354,521 km (0.071 R)
• M9: 2,614,672 km (0.072 R)
• M10: 3,143,051 km (0.058 R)
• M11: 3,285,468 km (0.092 R)
• M12: 3,534,848 km (0.078 R)
• M13: 3,661,857 km (0.082 R)
• M14: 3,964,194 km (0.063 R)
• M15: 4,140,719 km (0.053 R)
• M16: 4,297,348 km (0.099 R)
• M17: 4,686,004 km (0.067 R)
• M18: 4,802,540 km (0.105 R)
• M19: 4,943,611 km (0.092 R)
• M20: 5,571,025 km (0.11 R)
• M21: 5,694,593 km (0.098 R)
• M22: 6,045,400 km (0.037 R)
• M23: 6,172,558 km (0.112 R)
• M24: 6,326,195 km (0.082 R)
• M25: 6,689,718 km (0.089 R)
• M26: 7,382,954 km (0.058 R)
• M27: 7,628,295 km (0.119 R)
• M28: 8,043,130 km (0.084 R)
• M29: 8,155,029 km (0.113 R)
• M30: 8,808,622 km (0.036 R)
• M31: 9,331,766 km (0.058 R)
• M32: 9,449,499 km (0.099 R)
• M33: 9,538,061 km (0.069 R)
• M34: 9,925,071 km (0.108 R)
• M35: 11,587,402 km (0.082 R)
• M36: 11,904,699 km (0.104 R)
• M37: 12,386,105 km (0.092 R)
• M38: 12,808,420 km (0.076 R)
• M39: 13,334,705 km (0.118 R)
• M40: 14,238,875 km (0.071 R)
• M41: 14,681,236 km (0.119 R)
• M42: 14,818,267 km (0.082 R)
• M43: 15,266,762 km (0.119 R)
• M44: 15,544,864 km (0.061 R)
• M45: 15,684,589 km (0.082 R)
• M46: 15,894,923 km (0.092 R)
• M47: 16,035,695 km (0.116 R)
• M48: 16,141,461 km (0.079 R)
• M49: 17,104,422 km (0.114 R)
• M50: 17,683,964 km (0.114 R)
• M51: 18,086,083 km (0.114 R)
• M52: 18,232,988 km (0.069 R)
• M53: 18,491,194 km (0.099 R)
• M54: 19,573,685 km (0.095 R)
• M55: 19,800,325 km (0.108 R)
• M56: 20,676,670 km (0.049 R)
• M57: 20,907,499 km (0.089 R)
• M58: 21,604,775 km (0.099 R)
• M59: 22,034,719 km (0.034 R)
• M60: 22,152,453 km (0.117 R)
• M61: 22,863,342 km (0.037 R)
• M62: 23,101,950 km (0.1 R)
• M63: 23,181,686 km (0.053 R)
• M64: 23,822,713 km (0.12 R)
• M65: 24,877,079 km (0.106 R)
• M66: 24,999,599 km (0.073 R)
• M67: 25,492,225 km (0.026 R)
• M68: 25,946,404 km (0.109 R)
• M69: 26,112,308 km (0.107 R)
• M70: 26,779,365 km (0.04 R)
• M71: 27,114,913 km (0.107 R)
• M72: 27,241,174 km (0.077 R)
• M73: 27,960,141 km (0.118 R)
• M74: 28,045,113 km (0.079 R)
• M75: 28,514,102 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.4

Radius: 14.7

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 3.8 AU - 4.48 AU

Year: 5439 Days

Day: 8.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 59,360,069 km

• M1: 198,816 km (0.065 R)
• M2: 378,034 km (0.058 R)
• M3: 526,884 km (0.11 R)
• M4: 826,827 km (0.05 R)
• M5: 1,037,012 km (0.063 R)
• M6: 1,183,319 km (0.116 R)
• M7: 1,294,470 km (0.1 R)
• M8: 1,409,362 km (0.091 R)
• M9: 2,037,673 km (0.12 R)
• M10: 2,436,201 km (0.084 R)
• M11: 2,580,713 km (0.092 R)
• M12: 2,672,566 km (0.059 R)
• M13: 2,765,616 km (0.087 R)
• M14: 2,878,712 km (0.083 R)
• M15: 3,148,886 km (0.117 R)
• M16: 3,247,321 km (0.096 R)
• M17: 3,366,999 km (0.039 R)
• M18: 3,590,349 km (0.049 R)
• M19: 4,576,947 km (0.109 R)
• M20: 5,123,877 km (0.043 R)
• M21: 5,310,874 km (0.108 R)
• M22: 5,524,051 km (0.086 R)
• M23: 6,008,000 km (0.064 R)
• M24: 6,106,435 km (0.111 R)
• M25: 6,329,935 km (0.114 R)
• M26: 6,480,430 km (0.086 R)
• M27: 7,146,739 km (0.097 R)
• M28: 7,541,079 km (0.056 R)
• M29: 7,754,256 km (0.086 R)
• M30: 8,599,634 km (0.104 R)
• M31: 8,738,760 km (0.079 R)
• M32: 8,850,659 km (0.045 R)
• M33: 8,991,131 km (0.116 R)
• M34: 9,359,890 km (0.087 R)
• M35: 9,503,055 km (0.117 R)
• M36: 9,675,841 km (0.095 R)
• M37: 10,229,802 km (0.099 R)
• M38: 10,466,316 km (0.1 R)
• M39: 10,674,556 km (0.096 R)
• M40: 10,974,649 km (0.108 R)
• M41: 11,307,953 km (0.106 R)
• M42: 11,675,366 km (0.112 R)
• M43: 11,767,817 km (0.034 R)
• M44: 12,327,762 km (0.106 R)
• M45: 12,579,535 km (0.025 R)
• M46: 13,120,032 km (0.075 R)
• M47: 13,635,846 km (0.088 R)
• M48: 13,896,146 km (0.091 R)
• M49: 14,027,044 km (0.118 R)
• M50: 14,125,330 km (0.072 R)
• M51: 14,322,799 km (0.059 R)
• M52: 14,587,588 km (0.11 R)
• M53: 14,720,430 km (0.117 R)
• M54: 14,820,511 km (0.096 R)
• M55: 14,920,742 km (0.108 R)
• M56: 15,628,639 km (0.076 R)
• M57: 15,969,573 km (0.1 R)
• M58: 16,728,333 km (0.074 R)
• M59: 16,902,465 km (0.106 R)
• M60: 17,147,207 km (0.094 R)
• M61: 17,393,146 km (0.112 R)
• M62: 19,002,071 km (0.074 R)
• M63: 19,366,043 km (0.025 R)
• M64: 19,512,349 km (0.098 R)
• M65: 19,732,408 km (0.098 R)
• M66: 20,064,066 km (0.038 R)
• M67: 20,175,068 km (0.067 R)
• M68: 20,509,120 km (0.061 R)
• M69: 21,446,949 km (0.049 R)
• M70: 22,706,114 km (0.082 R)
• M71: 23,286,405 km (0.1 R)
• M72: 23,793,392 km (0.049 R)
• M73: 24,146,443 km (0.119 R)
• M74: 24,778,494 km (0.082 R)
• M75: 24,937,217 km (0.061 R)
• M76: 25,696,426 km (0.112 R)
• M77: 26,585,038 km (0.08 R)
• M78: 26,829,181 km (0.097 R)
• M79: 27,073,923 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.8

Radius: 13.5

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 4.44 AU - 5.24 AU

Year: 6875 Days

Day: 14.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 59,360,069 km

• M1: 238,160 km (0.108 R)
• M2: 358,586 km (0.063 R)
• M3: 639,531 km (0.107 R)
• M4: 814,560 km (0.105 R)
• M5: 941,270 km (0.115 R)
• M6: 1,172,997 km (0.079 R)
• M7: 1,318,556 km (0.086 R)
• M8: 1,486,105 km (0.097 R)
• M9: 1,710,053 km (0.095 R)
• M10: 1,910,963 km (0.084 R)
• M11: 2,173,507 km (0.103 R)
• M12: 2,355,269 km (0.115 R)
• M13: 2,911,025 km (0.074 R)
• M14: 3,031,152 km (0.113 R)
• M15: 3,132,579 km (0.054 R)
• M16: 3,255,698 km (0.106 R)
• M17: 3,528,415 km (0.094 R)
• M18: 4,051,559 km (0.095 R)
• M19: 4,368,258 km (0.108 R)
• M20: 4,646,061 km (0.088 R)
• M21: 5,195,085 km (0.114 R)
• M22: 5,317,157 km (0.045 R)
• M23: 5,891,314 km (0.101 R)
• M24: 6,406,828 km (0.111 R)
• M25: 6,963,781 km (0.07 R)
• M26: 7,758,445 km (0.082 R)
• M27: 7,898,468 km (0.042 R)
• M28: 9,136,690 km (0.079 R)
• M29: 9,433,343 km (0.113 R)
• M30: 10,036,072 km (0.08 R)
• M31: 10,158,144 km (0.072 R)
• M32: 10,250,147 km (0.099 R)
• M33: 11,469,818 km (0.12 R)
• M34: 11,725,631 km (0.111 R)
• M35: 11,983,537 km (0.049 R)
• M36: 12,801,239 km (0.095 R)
• M37: 13,603,084 km (0.081 R)
• M38: 13,908,114 km (0.084 R)
• M39: 14,078,506 km (0.054 R)
• M40: 14,352,569 km (0.11 R)
• M41: 14,836,518 km (0.103 R)
• M42: 15,045,656 km (0.073 R)
• M43: 15,466,625 km (0.108 R)
• M44: 15,749,514 km (0.076 R)
• M45: 16,536,249 km (0.096 R)
• M46: 16,644,558 km (0.11 R)
• M47: 16,753,017 km (0.041 R)
• M48: 16,898,127 km (0.06 R)
• M49: 17,153,041 km (0.066 R)
• M50: 17,703,412 km (0.102 R)
• M51: 18,185,117 km (0.111 R)
• M52: 18,633,761 km (0.096 R)
• M53: 19,313,384 km (0.117 R)
• M54: 20,078,129 km (0.072 R)
• M55: 20,541,732 km (0.07 R)
• M56: 21,165,406 km (0.111 R)
• M57: 22,471,395 km (0.095 R)
• M58: 23,235,092 km (0.083 R)
• M59: 23,356,416 km (0.067 R)
• M60: 23,518,580 km (0.084 R)
• M61: 23,803,265 km (0.031 R)
• M62: 24,170,977 km (0.092 R)
• M63: 24,335,086 km (0.116 R)
• M64: 24,458,354 km (0.074 R)
• M65: 25,036,251 km (0.072 R)
• M66: 25,202,304 km (0.095 R)
• M67: 25,702,410 km (0.087 R)
• M68: 27,052,082 km (0.037 R)
• M69: 27,265,110 km (0.109 R)
• M70: 27,735,595 km (0.101 R)
• M71: 28,424,792 km (0.06 R)
• M72: 28,554,643 km (0.115 R)
• M73: 28,814,943 km (0.096 R)
• M74: 28,901,860 km (0.115 R)
• M75: 29,119,525 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 730.9

Radius: 3.9

Gravity: 48.05 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 6.57 AU - 8.49 AU

Year: 13342 Days

Day: 17.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 72.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 59,360,069 km

• M1: 83,176 km (0.107 R)
• M2: 168,597 km (0.048 R)
• M3: 372,200 km (0.034 R)
• M4: 577,298 km (0.064 R)
• M5: 834,457 km (0.108 R)
• M6: 1,031,328 km (0.067 R)
• M7: 1,390,512 km (0.103 R)
• M8: 2,764,718 km (0.079 R)
• M9: 3,089,046 km (0.081 R)
• M10: 3,738,152 km (0.11 R)
• M11: 4,132,641 km (0.095 R)
• M12: 4,502,746 km (0.093 R)
• M13: 4,921,920 km (0.074 R)
• M14: 5,433,245 km (0.103 R)
• M15: 5,594,063 km (0.042 R)
• M16: 5,920,186 km (0.053 R)
• M17: 6,210,556 km (0.093 R)
• M18: 6,252,443 km (0.111 R)
• M19: 7,109,489 km (0.083 R)
• M20: 7,775,948 km (0.056 R)
• M21: 8,462,303 km (0.111 R)
• M22: 8,789,174 km (0.079 R)
• M23: 8,930,544 km (0.074 R)
• M24: 8,977,817 km (0.034 R)
• M25: 9,359,142 km (0.103 R)
• M26: 10,137,500 km (0.03 R)
• M27: 10,785,109 km (0.081 R)
• M28: 11,037,630 km (0.092 R)
• M29: 11,394,571 km (0.117 R)
• M30: 12,224,540 km (0.065 R)
• M31: 12,593,897 km (0.103 R)
• M32: 12,913,288 km (0.049 R)
• M33: 13,505,696 km (0.05 R)
• M34: 13,996,975 km (0.099 R)
• M35: 14,605,390 km (0.039 R)
• M36: 14,772,790 km (0.084 R)
• M37: 19,098,711 km (0.115 R)
• M38: 19,342,855 km (0.107 R)
• M39: 20,892,689 km (0.115 R)
• M40: 21,969,046 km (0.059 R)
• M41: 22,096,802 km (0.052 R)
• M42: 22,546,045 km (0.104 R)
• M43: 22,933,653 km (0.075 R)
• M44: 24,307,111 km (0.059 R)
• M45: 26,722,967 km (0.062 R)
• M46: 27,407,527 km (0.092 R)
• M47: 28,514,701 km (0.077 R)
• M48: 29,143,909 km (0.083 R)
• M49: 29,990,035 km (0.088 R)
• M50: 31,058,762 km (0.085 R)
• M51: 31,706,072 km (0.078 R)
• M52: 31,995,245 km (0.083 R)
• M53: 33,748,232 km (0.094 R)
• M54: 33,969,488 km (0.101 R)
• M55: 34,413,494 km (0.084 R)
• M56: 35,832,280 km (0.091 R)
• M57: 36,284,365 km (0.079 R)
• M58: 36,814,091 km (0.115 R)
• M59: 37,041,929 km (0.089 R)
• M60: 37,804,579 km (0.096 R)
• M61: 37,881,173 km (0.109 R)
• M62: 38,572,465 km (0.119 R)
• M63: 41,774,308 km (0.095 R)
• M64: 42,091,156 km (0.066 R)
• M65: 42,249,879 km (0.054 R)
• M66: 42,807,132 km (0.079 R)
• M67: 43,928,816 km (0.08 R)
• M68: 44,009,300 km (0.119 R)
• M69: 44,251,050 km (0.079 R)
• M70: 44,412,466 km (0.069 R)
• M71: 44,574,032 km (0.093 R)
• M72: 44,654,964 km (0.083 R)
• M73: 45,710,826 km (0.103 R)
• M74: 46,939,473 km (0.074 R)
• M75: 47,433,894 km (0.107 R)
• M76: 48,178,742 km (0.078 R)
• M77: 48,594,325 km (0.079 R)
• M78: 48,760,828 km (0.103 R)
• M79: 49,680,106 km (0.117 R)
• M80: 50,689,593 km (0.055 R)
• M81: 51,281,552 km (0.098 R)
• M82: 51,705,811 km (0.047 R)
• M83: 51,875,754 km (0.046 R)
• M84: 52,814,182 km (0.098 R)
• M85: 54,102,968 km (0.118 R)
• M86: 54,707,792 km (0.116 R)
• M87: 56,623,542 km (0.081 R)
• M88: 57,062,013 km (0.084 R)
• M89: 57,237,641 km (0.105 R)
• M90: 58,295,597 km (0.038 R)
• M91: 59,093,403 km (0.065 R)
• M92: 59,271,125 km (0.056 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 494 - 15,536 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit