🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261.4

Radius: 13.5

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.59 AU - 0.59 AU

Year: 307 Days

Day: 12 Hours

Environment

Temp: -155 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 26,739,110 km

• M1: 187,297 km (0.112 R)
• M2: 281,394 km (0.118 R)
• M3: 387,309 km (0.105 R)
• M4: 507,137 km (0.109 R)
• M5: 593,006 km (0.057 R)
• M6: 687,552 km (0.106 R)
• M7: 788,381 km (0.088 R)
• M8: 894,894 km (0.1 R)
• M9: 994,676 km (0.049 R)
• M10: 1,082,490 km (0.075 R)
• M11: 1,166,714 km (0.099 R)
• M12: 1,260,063 km (0.076 R)
• M13: 1,516,324 km (0.084 R)
• M14: 1,604,437 km (0.106 R)
• M15: 1,724,714 km (0.104 R)
• M16: 1,863,840 km (0.111 R)
• M17: 1,982,770 km (0.094 R)
• M18: 2,108,432 km (0.11 R)
• M19: 2,203,427 km (0.107 R)
• M20: 2,488,860 km (0.073 R)
• M21: 2,638,458 km (0.101 R)
• M22: 2,763,821 km (0.098 R)
• M23: 2,932,717 km (0.105 R)
• M24: 3,128,690 km (0.03 R)
• M25: 3,218,897 km (0.074 R)
• M26: 3,324,364 km (0.114 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.6

Radius: 12.4

Gravity: 6.44 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.57 AU - 0.67 AU

Year: 331 Days

Day: 8.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 26,739,110 km

• M1: 161,416 km (0.037 R)
• M2: 263,591 km (0.068 R)
• M3: 344,374 km (0.118 R)
• M4: 441,912 km (0.118 R)
• M5: 548,725 km (0.119 R)
• M6: 761,603 km (0.085 R)
• M7: 920,924 km (0.071 R)
• M8: 998,566 km (0.08 R)
• M9: 1,087,726 km (0.115 R)
• M10: 1,189,153 km (0.059 R)
• M11: 1,269,936 km (0.087 R)
• M12: 1,367,474 km (0.06 R)
• M13: 1,457,682 km (0.088 R)
• M14: 1,539,512 km (0.073 R)
• M15: 1,676,095 km (0.055 R)
• M16: 1,756,728 km (0.096 R)
• M17: 1,877,603 km (0.116 R)
• M18: 1,984,266 km (0.063 R)
• M19: 2,087,339 km (0.078 R)
• M20: 2,192,207 km (0.102 R)
• M21: 2,401,495 km (0.089 R)
• M22: 2,530,149 km (0.099 R)
• M23: 2,661,346 km (0.053 R)
• M24: 2,762,773 km (0.089 R)
• M25: 2,865,547 km (0.097 R)
• M26: 3,002,429 km (0.119 R)
• M27: 3,181,797 km (0.071 R)
• M28: 3,303,271 km (0.082 R)
• M29: 3,440,153 km (0.119 R)
• M30: 3,606,954 km (0.058 R)
• M31: 3,705,539 km (0.117 R)
• M32: 3,797,991 km (0.082 R)
• M33: 3,984,988 km (0.06 R)
• M34: 4,116,335 km (0.075 R)
• M35: 4,226,888 km (0.098 R)
• M36: 4,316,048 km (0.075 R)
• M37: 4,541,941 km (0.12 R)
• M38: 4,802,540 km (0.113 R)
• M39: 4,950,343 km (0.11 R)
• M40: 5,044,440 km (0.119 R)
• M41: 5,516,122 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.2

Radius: 8.1

Gravity: 10.26 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.6 AU - 0.68 AU

Year: 347 Days

Day: 10.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 26,739,110 km

• M1: 103,073 km (0.099 R)
• M2: 157,975 km (0.059 R)
• M3: 213,177 km (0.099 R)
• M4: 267,481 km (0.05 R)
• M5: 323,131 km (0.082 R)
• M6: 378,034 km (0.117 R)
• M7: 430,991 km (0.052 R)
• M8: 483,650 km (0.081 R)
• M9: 538,702 km (0.043 R)
• M10: 592,856 km (0.119 R)
• M11: 670,797 km (0.094 R)
• M12: 740,958 km (0.098 R)
• M13: 798,254 km (0.076 R)
• M14: 885,171 km (0.106 R)
• M15: 1,174,642 km (0.074 R)
• M16: 1,233,285 km (0.067 R)
• M17: 1,311,674 km (0.111 R)
• M18: 1,662,032 km (0.071 R)
• M19: 1,759,271 km (0.11 R)
• M20: 1,847,982 km (0.088 R)
• M21: 1,900,940 km (0.084 R)
• M22: 1,992,045 km (0.106 R)
• M23: 2,057,270 km (0.083 R)
• M24: 2,206,569 km (0.056 R)
• M25: 2,291,241 km (0.096 R)
• M26: 2,446,224 km (0.047 R)
• M27: 2,616,467 km (0.089 R)
• M28: 2,706,225 km (0.107 R)
• M29: 2,766,513 km (0.077 R)
• M30: 2,833,533 km (0.119 R)
• M31: 2,975,202 km (0.055 R)
• M32: 3,062,568 km (0.088 R)
• M33: 3,188,978 km (0.102 R)
• M34: 3,368,794 km (0.119 R)
• M35: 3,512,558 km (0.106 R)
• M36: 3,618,324 km (0.081 R)
• M37: 3,691,627 km (0.094 R)
• M38: 3,792,456 km (0.08 R)
• M39: 3,976,311 km (0.062 R)
• M40: 4,156,128 km (0.112 R)
• M41: 4,324,575 km (0.089 R)
• M42: 4,416,728 km (0.106 R)
• M43: 4,559,743 km (0.118 R)
• M44: 4,617,338 km (0.118 R)
• M45: 4,697,074 km (0.036 R)
• M46: 4,865,222 km (0.091 R)
• M47: 4,998,214 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.2

Radius: 9

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.7 AU - 0.76 AU

Year: 423 Days

Day: 12.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 26,739,110 km

• M1: 120,426 km (0.111 R)
• M2: 182,958 km (0.072 R)
• M3: 247,884 km (0.108 R)
• M4: 315,053 km (0.114 R)
• M5: 379,380 km (0.104 R)
• M6: 446,998 km (0.118 R)
• M7: 514,317 km (0.03 R)
• M8: 591,061 km (0.09 R)
• M9: 698,173 km (0.1 R)
• M10: 757,264 km (0.073 R)
• M11: 865,424 km (0.108 R)
• M12: 982,110 km (0.104 R)
• M13: 1,090,568 km (0.085 R)
• M14: 1,231,938 km (0.082 R)
• M15: 1,316,012 km (0.067 R)
• M16: 1,428,809 km (0.065 R)
• M17: 1,494,184 km (0.067 R)
• M18: 1,564,495 km (0.094 R)
• M19: 1,708,557 km (0.074 R)
• M20: 1,803,103 km (0.115 R)
• M21: 1,928,915 km (0.102 R)
• M22: 2,105,740 km (0.084 R)
• M23: 2,171,712 km (0.116 R)
• M24: 2,251,897 km (0.113 R)
• M25: 2,337,616 km (0.065 R)
• M26: 2,466,121 km (0.074 R)
• M27: 2,582,658 km (0.095 R)
• M28: 2,663,141 km (0.05 R)
• M29: 2,753,947 km (0.046 R)
• M30: 2,889,782 km (0.078 R)
• M31: 3,052,694 km (0.118 R)
• M32: 3,112,683 km (0.099 R)
• M33: 3,223,834 km (0.105 R)
• M34: 3,295,192 km (0.093 R)
• M35: 3,429,082 km (0.047 R)
• M36: 3,486,378 km (0.1 R)
• M37: 3,580,775 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.9

Radius: 10.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.11 AU - 1.59 AU

Year: 1064 Days

Day: 10.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 67 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 26,739,110 km

• M1: 180,116 km (0.098 R)
• M2: 369,806 km (0.087 R)
• M3: 439,070 km (0.107 R)
• M4: 542,292 km (0.059 R)
• M5: 620,233 km (0.082 R)
• M6: 743,053 km (0.06 R)
• M7: 835,654 km (0.072 R)
• M8: 932,444 km (0.075 R)
• M9: 1,033,272 km (0.063 R)
• M10: 1,099,395 km (0.111 R)
• M11: 1,191,697 km (0.086 R)
• M12: 1,266,496 km (0.108 R)
• M13: 1,400,086 km (0.103 R)
• M14: 1,468,602 km (0.11 R)
• M15: 1,592,918 km (0.066 R)
• M16: 1,922,333 km (0.111 R)
• M17: 2,028,996 km (0.06 R)
• M18: 2,131,470 km (0.097 R)
• M19: 2,223,473 km (0.072 R)
• M20: 2,763,372 km (0.109 R)
• M21: 2,830,392 km (0.065 R)
• M22: 2,938,701 km (0.079 R)
• M23: 3,138,563 km (0.108 R)
• M24: 3,215,606 km (0.063 R)
• M25: 3,300,428 km (0.108 R)
• M26: 3,508,369 km (0.09 R)
• M27: 3,595,585 km (0.081 R)
• M28: 3,750,269 km (0.101 R)
• M29: 3,922,157 km (0.101 R)
• M30: 4,020,443 km (0.063 R)
• M31: 4,297,049 km (0.062 R)
• M32: 4,374,990 km (0.095 R)
• M33: 4,548,074 km (0.1 R)
• M34: 4,619,582 km (0.103 R)
• M35: 5,155,442 km (0.105 R)
• M36: 5,230,091 km (0.077 R)
• M37: 5,363,682 km (0.055 R)
• M38: 5,506,847 km (0.062 R)
• M39: 5,702,521 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706

Radius: 14.8

Gravity: 3.22 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 2.9 AU - 3.14 AU

Year: 3560 Days

Day: 12.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 26,739,110 km

• M1: 195,225 km (0.114 R)
• M2: 315,801 km (0.063 R)
• M3: 461,958 km (0.074 R)
• M4: 771,626 km (0.099 R)
• M5: 1,162,375 km (0.065 R)
• M6: 1,263,504 km (0.119 R)
• M7: 1,489,097 km (0.087 R)
• M8: 1,656,796 km (0.113 R)
• M9: 1,875,658 km (0.102 R)
• M10: 2,058,018 km (0.053 R)
• M11: 2,182,932 km (0.036 R)
• M12: 2,342,703 km (0.115 R)
• M13: 2,674,511 km (0.097 R)
• M14: 2,968,620 km (0.084 R)
• M15: 3,146,791 km (0.114 R)
• M16: 3,953,124 km (0.053 R)
• M17: 4,070,708 km (0.078 R)
• M18: 4,209,385 km (0.115 R)
• M19: 4,491,526 km (0.079 R)
• M20: 4,634,991 km (0.105 R)
• M21: 4,821,839 km (0.068 R)
• M22: 5,202,864 km (0.098 R)
• M23: 5,397,192 km (0.115 R)
• M24: 5,593,764 km (0.1 R)
• M25: 5,815,168 km (0.114 R)
• M26: 6,107,483 km (0.083 R)
• M27: 6,381,546 km (0.113 R)
• M28: 6,753,297 km (0.102 R)
• M29: 6,918,154 km (0.027 R)
• M30: 7,348,397 km (0.079 R)
• M31: 8,845,273 km (0.11 R)
• M32: 9,129,808 km (0.108 R)
• M33: 9,364,827 km (0.026 R)
• M34: 9,548,982 km (0.12 R)
• M35: 10,108,927 km (0.111 R)
• M36: 10,707,168 km (0.101 R)
• M37: 11,400,854 km (0.062 R)
• M38: 11,625,849 km (0.03 R)
• M39: 12,051,904 km (0.072 R)
• M40: 12,223,792 km (0.111 R)
• M41: 12,831,757 km (0.088 R)
• M42: 13,479,217 km (0.062 R)
• M43: 13,747,147 km (0.084 R)
• M44: 14,561,707 km (0.091 R)
• M45: 14,898,153 km (0.095 R)
• M46: 15,113,574 km (0.039 R)
• M47: 15,859,917 km (0.119 R)
• M48: 16,111,391 km (0.101 R)
• M49: 16,650,243 km (0.11 R)
• M50: 16,841,878 km (0.08 R)
• M51: 17,259,406 km (0.079 R)
• M52: 17,420,971 km (0.09 R)
• M53: 17,550,523 km (0.079 R)
• M54: 17,712,986 km (0.106 R)
• M55: 18,400,837 km (0.068 R)
• M56: 18,698,238 km (0.11 R)
• M57: 18,897,502 km (0.056 R)
• M58: 19,398,505 km (0.108 R)
• M59: 20,073,491 km (0.057 R)
• M60: 20,277,543 km (0.099 R)
• M61: 20,653,332 km (0.113 R)
• M62: 20,962,551 km (0.091 R)
• M63: 21,273,266 km (0.038 R)
• M64: 21,515,914 km (0.12 R)
• M65: 22,672,604 km (0.103 R)
• M66: 22,849,728 km (0.112 R)
• M67: 23,062,756 km (0.098 R)
• M68: 23,205,173 km (0.096 R)
• M69: 23,383,494 km (0.116 R)
• M70: 23,669,973 km (0.086 R)
• M71: 23,885,544 km (0.076 R)
• M72: 23,993,554 km (0.105 R)
• M73: 24,137,916 km (0.105 R)
• M74: 24,318,630 km (0.051 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.7

Radius: 13.2

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 3.23 AU - 3.55 AU

Year: 4233 Days

Day: 6.1 Hours

Environment

Temp: -206 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 26,739,110 km

• M1: 207,642 km (0.096 R)
• M2: 521,199 km (0.077 R)
• M3: 710,590 km (0.099 R)
• M4: 902,374 km (0.065 R)
• M5: 1,149,360 km (0.098 R)
• M6: 1,300,753 km (0.103 R)
• M7: 1,486,255 km (0.041 R)
• M8: 1,596,508 km (0.117 R)
• M9: 1,810,733 km (0.06 R)
• M10: 1,974,094 km (0.067 R)
• M11: 2,080,757 km (0.113 R)
• M12: 2,189,365 km (0.114 R)
• M13: 2,543,313 km (0.116 R)
• M14: 3,108,943 km (0.107 R)
• M15: 3,288,161 km (0.114 R)
• M16: 3,415,619 km (0.111 R)
• M17: 3,600,671 km (0.11 R)
• M18: 3,713,318 km (0.109 R)
• M19: 4,038,993 km (0.069 R)
• M20: 4,718,466 km (0.056 R)
• M21: 5,008,686 km (0.115 R)
• M22: 5,304,740 km (0.112 R)
• M23: 5,412,002 km (0.118 R)
• M24: 5,672,153 km (0.097 R)
• M25: 5,958,782 km (0.098 R)
• M26: 6,638,256 km (0.103 R)
• M27: 6,730,707 km (0.04 R)
• M28: 6,846,945 km (0.068 R)
• M29: 6,963,781 km (0.089 R)
• M30: 8,144,557 km (0.078 R)
• M31: 8,443,154 km (0.105 R)
• M32: 8,897,932 km (0.085 R)
• M33: 9,179,774 km (0.086 R)
• M34: 9,282,997 km (0.064 R)
• M35: 9,726,106 km (0.058 R)
• M36: 10,795,880 km (0.114 R)
• M37: 11,317,079 km (0.111 R)
• M38: 11,706,482 km (0.113 R)
• M39: 11,874,630 km (0.055 R)
• M40: 12,270,317 km (0.114 R)
• M41: 13,132,748 km (0.118 R)
• M42: 13,424,614 km (0.075 R)
• M43: 13,689,103 km (0.106 R)
• M44: 13,777,665 km (0.112 R)
• M45: 14,074,317 km (0.04 R)
• M46: 14,193,547 km (0.068 R)
• M47: 14,283,156 km (0.106 R)
• M48: 14,373,064 km (0.063 R)
• M49: 14,462,973 km (0.1 R)
• M50: 14,643,687 km (0.119 R)
• M51: 15,897,915 km (0.114 R)
• M52: 16,022,082 km (0.094 R)
• M53: 16,585,018 km (0.047 R)
• M54: 16,679,564 km (0.12 R)
• M55: 16,837,390 km (0.109 R)
• M56: 16,995,664 km (0.109 R)
• M57: 17,218,266 km (0.11 R)
• M58: 17,345,873 km (0.073 R)
• M59: 17,762,653 km (0.039 R)
• M60: 17,956,232 km (0.099 R)
• M61: 18,540,861 km (0.06 R)
• M62: 19,033,038 km (0.066 R)
• M63: 19,462,982 km (0.103 R)
• M64: 19,862,708 km (0.084 R)
• M65: 20,399,914 km (0.107 R)
• M66: 20,568,660 km (0.116 R)
• M67: 20,941,907 km (0.098 R)
• M68: 21,044,082 km (0.027 R)
• M69: 21,248,882 km (0.085 R)
• M70: 21,660,425 km (0.041 R)
• M71: 23,262,768 km (0.118 R)
• M72: 23,474,599 km (0.105 R)
• M73: 23,757,937 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460.1

Radius: 13.7

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 3.34 AU - 4.32 AU

Year: 5084 Days

Day: 6.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 26,739,110 km

• M1: 177,124 km (0.071 R)
• M2: 301,589 km (0.101 R)
• M3: 600,486 km (0.116 R)
• M4: 727,046 km (0.118 R)
• M5: 997,967 km (0.067 R)
• M6: 1,126,472 km (0.098 R)
• M7: 1,220,120 km (0.109 R)
• M8: 1,488,200 km (0.072 R)
• M9: 1,791,734 km (0.119 R)
• M10: 1,934,899 km (0.064 R)
• M11: 2,267,305 km (0.058 R)
• M12: 2,458,192 km (0.08 R)
• M13: 2,546,754 km (0.049 R)
• M14: 3,511,361 km (0.118 R)
• M15: 3,774,354 km (0.037 R)
• M16: 3,897,922 km (0.12 R)
• M17: 4,384,115 km (0.116 R)
• M18: 4,557,948 km (0.08 R)
• M19: 4,756,165 km (0.061 R)
• M20: 5,275,868 km (0.106 R)
• M21: 5,861,394 km (0.074 R)
• M22: 6,077,413 km (0.068 R)
• M23: 6,916,957 km (0.049 R)
• M24: 7,018,235 km (0.068 R)
• M25: 7,119,961 km (0.06 R)
• M26: 7,273,448 km (0.1 R)
• M27: 7,531,654 km (0.103 R)
• M28: 7,740,493 km (0.107 R)
• M29: 7,951,276 km (0.097 R)
• M30: 8,459,460 km (0.09 R)
• M31: 8,758,507 km (0.071 R)
• M32: 9,088,819 km (0.083 R)
• M33: 9,903,977 km (0.049 R)
• M34: 10,046,993 km (0.104 R)
• M35: 10,161,735 km (0.087 R)
• M36: 10,277,075 km (0.061 R)
• M37: 10,596,316 km (0.091 R)
• M38: 10,771,944 km (0.058 R)
• M39: 11,453,811 km (0.097 R)
• M40: 11,664,146 km (0.102 R)
• M41: 11,754,802 km (0.084 R)
• M42: 11,997,300 km (0.104 R)
• M43: 12,088,705 km (0.105 R)
• M44: 12,302,929 km (0.087 R)
• M45: 13,015,613 km (0.094 R)
• M46: 13,551,024 km (0.054 R)
• M47: 14,093,615 km (0.052 R)
• M48: 15,068,545 km (0.105 R)
• M49: 15,299,225 km (0.082 R)
• M50: 15,564,312 km (0.081 R)
• M51: 15,797,386 km (0.04 R)
• M52: 16,065,315 km (0.112 R)
• M53: 16,334,741 km (0.096 R)
• M54: 16,436,168 km (0.111 R)
• M55: 16,673,580 km (0.093 R)
• M56: 16,809,714 km (0.109 R)
• M57: 17,530,926 km (0.042 R)
• M58: 17,912,699 km (0.106 R)
• M59: 18,052,274 km (0.084 R)
• M60: 18,297,316 km (0.103 R)
• M61: 18,861,449 km (0.103 R)
• M62: 19,324,155 km (0.105 R)
• M63: 19,790,602 km (0.1 R)
• M64: 20,260,788 km (0.099 R)
• M65: 22,140,634 km (0.087 R)
• M66: 22,666,321 km (0.089 R)
• M67: 22,892,962 km (0.094 R)
• M68: 23,730,261 km (0.073 R)
• M69: 24,268,365 km (0.081 R)
• M70: 24,616,330 km (0.093 R)
• M71: 24,888,149 km (0.084 R)
• M72: 25,591,857 km (0.117 R)
• M73: 25,709,740 km (0.069 R)
• M74: 26,183,068 km (0.108 R)
• M75: 26,381,285 km (0.103 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 346 - 20,088 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit