🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.6

Radius: 9.5

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.63 AU - 0.95 AU

Year: 476 Days

Day: 9.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 67,648,041 km

• M1: 125,961 km (0.068 R)
• M2: 203,902 km (0.047 R)
• M3: 263,591 km (0.12 R)
• M4: 343,926 km (0.065 R)
• M5: 425,905 km (0.113 R)
• M6: 509,231 km (0.091 R)
• M7: 581,337 km (0.078 R)
• M8: 642,523 km (0.102 R)
• M9: 760,556 km (0.115 R)
• M10: 840,890 km (0.075 R)
• M11: 1,001,707 km (0.084 R)
• M12: 1,113,307 km (0.089 R)
• M13: 1,229,246 km (0.101 R)
• M14: 1,300,753 km (0.087 R)
• M15: 1,453,343 km (0.103 R)
• M16: 1,539,512 km (0.108 R)
• M17: 1,637,947 km (0.098 R)
• M18: 1,706,613 km (0.101 R)
• M19: 1,830,480 km (0.107 R)
• M20: 2,058,915 km (0.113 R)
• M21: 2,121,747 km (0.083 R)
• M22: 2,249,503 km (0.065 R)
• M23: 2,421,990 km (0.056 R)
• M24: 2,500,678 km (0.115 R)
• M25: 2,629,631 km (0.083 R)
• M26: 2,698,147 km (0.051 R)
• M27: 2,779,828 km (0.111 R)
• M28: 2,900,703 km (0.115 R)
• M29: 3,141,256 km (0.09 R)
• M30: 3,214,110 km (0.11 R)
• M31: 3,354,583 km (0.073 R)
• M32: 3,641,960 km (0.112 R)
• M33: 3,753,411 km (0.094 R)
• M34: 3,851,996 km (0.071 R)
• M35: 4,080,581 km (0.067 R)
• M36: 4,255,012 km (0.111 R)
• M37: 4,417,027 km (0.086 R)
• M38: 4,498,857 km (0.078 R)
• M39: 4,633,794 km (0.106 R)
• M40: 4,716,821 km (0.106 R)
• M41: 4,777,707 km (0.055 R)
• M42: 5,007,938 km (0.116 R)
• M43: 5,116,546 km (0.056 R)
• M44: 5,202,565 km (0.084 R)
• M45: 5,368,020 km (0.066 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.6

Radius: 8.3

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.91 AU - 1.09 AU

Year: 678 Days

Day: 5.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 67,648,041 km

• M1: 104,569 km (0.105 R)
• M2: 157,826 km (0.027 R)
• M3: 243,545 km (0.097 R)
• M4: 322,084 km (0.107 R)
• M5: 399,277 km (0.099 R)
• M6: 477,367 km (0.113 R)
• M7: 578,794 km (0.069 R)
• M8: 836,701 km (0.085 R)
• M9: 940,522 km (0.096 R)
• M10: 996,322 km (0.11 R)
• M11: 1,175,241 km (0.067 R)
• M12: 1,273,377 km (0.101 R)
• M13: 1,413,700 km (0.091 R)
• M14: 1,528,591 km (0.119 R)
• M15: 1,683,275 km (0.088 R)
• M16: 1,789,340 km (0.1 R)
• M17: 1,958,087 km (0.049 R)
• M18: 2,013,587 km (0.069 R)
• M19: 2,109,330 km (0.062 R)
• M20: 2,287,950 km (0.076 R)
• M21: 2,388,031 km (0.111 R)
• M22: 2,447,571 km (0.08 R)
• M23: 2,550,045 km (0.03 R)
• M24: 2,617,065 km (0.103 R)
• M25: 2,765,317 km (0.084 R)
• M26: 2,884,696 km (0.107 R)
• M27: 3,194,064 km (0.112 R)
• M28: 3,319,577 km (0.088 R)
• M29: 3,413,075 km (0.112 R)
• M30: 3,678,163 km (0.099 R)
• M31: 3,781,834 km (0.099 R)
• M32: 3,858,578 km (0.116 R)
• M33: 3,957,013 km (0.072 R)
• M34: 4,278,948 km (0.081 R)
• M35: 4,380,824 km (0.115 R)
• M36: 4,439,466 km (0.059 R)
• M37: 4,505,589 km (0.113 R)
• M38: 4,587,120 km (0.102 R)
• M39: 4,639,180 km (0.039 R)
• M40: 4,743,898 km (0.102 R)
• M41: 4,879,733 km (0.07 R)
• M42: 5,101,138 km (0.088 R)
• M43: 5,162,922 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.5

Radius: 14

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.83 AU - 1.27 AU

Year: 730 Days

Day: 8.2 Hours

Environment

Temp: -187 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 67,648,041 km

• M1: 184,753 km (0.09 R)
• M2: 333,753 km (0.066 R)
• M3: 477,367 km (0.105 R)
• M4: 630,106 km (0.11 R)
• M5: 736,171 km (0.106 R)
• M6: 930,648 km (0.111 R)
• M7: 1,143,377 km (0.078 R)
• M8: 1,277,865 km (0.085 R)
• M9: 1,398,740 km (0.077 R)
• M10: 1,543,700 km (0.091 R)
• M11: 1,742,965 km (0.119 R)
• M12: 1,958,386 km (0.083 R)
• M13: 2,084,497 km (0.115 R)
• M14: 2,274,935 km (0.091 R)
• M15: 2,455,649 km (0.079 R)
• M16: 2,592,232 km (0.053 R)
• M17: 2,706,674 km (0.119 R)
• M18: 2,797,929 km (0.109 R)
• M19: 2,940,945 km (0.06 R)
• M20: 3,121,060 km (0.114 R)
• M21: 3,225,629 km (0.116 R)
• M22: 3,474,411 km (0.111 R)
• M23: 3,701,949 km (0.045 R)
• M24: 3,934,574 km (0.101 R)
• M25: 4,114,540 km (0.087 R)
• M26: 4,220,006 km (0.115 R)
• M27: 4,336,244 km (0.085 R)
• M28: 4,681,217 km (0.038 R)
• M29: 4,862,080 km (0.114 R)
• M30: 5,168,906 km (0.061 R)
• M31: 5,345,581 km (0.049 R)
• M32: 5,450,449 km (0.113 R)
• M33: 5,566,686 km (0.107 R)
• M34: 5,662,429 km (0.057 R)
• M35: 5,758,620 km (0.091 R)
• M36: 5,877,102 km (0.11 R)
• M37: 6,039,864 km (0.092 R)
• M38: 6,171,211 km (0.106 R)
• M39: 6,358,807 km (0.062 R)
• M40: 6,459,038 km (0.037 R)
• M41: 6,615,816 km (0.078 R)
• M42: 6,853,527 km (0.107 R)
• M43: 7,082,412 km (0.068 R)
• M44: 7,232,758 km (0.12 R)
• M45: 7,548,110 km (0.056 R)
• M46: 7,892,036 km (0.037 R)
• M47: 8,023,831 km (0.091 R)
• M48: 8,144,258 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.7

Radius: 8.6

Gravity: 11.03 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.13 AU - 1.47 AU

Year: 1005 Days

Day: 7.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 67,648,041 km

• M1: 113,395 km (0.063 R)
• M2: 207,343 km (0.083 R)
• M3: 317,147 km (0.077 R)
• M4: 386,112 km (0.107 R)
• M5: 520,152 km (0.077 R)
• M6: 622,776 km (0.083 R)
• M7: 695,181 km (0.086 R)
• M8: 923,916 km (0.115 R)
• M9: 993,629 km (0.105 R)
• M10: 1,094,458 km (0.119 R)
• M11: 1,283,400 km (0.111 R)
• M12: 1,361,939 km (0.034 R)
• M13: 1,450,351 km (0.065 R)
• M14: 1,524,103 km (0.069 R)
• M15: 1,684,173 km (0.07 R)
• M16: 1,814,473 km (0.1 R)
• M17: 1,948,213 km (0.106 R)
• M18: 2,066,844 km (0.086 R)
• M19: 2,234,992 km (0.104 R)
• M20: 2,340,010 km (0.071 R)
• M21: 2,407,778 km (0.096 R)
• M22: 2,655,063 km (0.092 R)
• M23: 2,776,686 km (0.114 R)
• M24: 3,131,383 km (0.104 R)
• M25: 3,216,953 km (0.116 R)
• M26: 3,270,957 km (0.086 R)
• M27: 3,346,953 km (0.116 R)
• M28: 3,456,459 km (0.116 R)
• M29: 3,656,770 km (0.035 R)
• M30: 3,735,608 km (0.095 R)
• M31: 3,872,341 km (0.11 R)
• M32: 3,929,786 km (0.111 R)
• M33: 4,115,437 km (0.09 R)
• M34: 4,209,385 km (0.081 R)
• M35: 4,315,899 km (0.107 R)
• M36: 4,568,121 km (0.092 R)
• M37: 4,775,762 km (0.106 R)
• M38: 4,849,813 km (0.049 R)
• M39: 4,961,563 km (0.118 R)
• M40: 5,137,191 km (0.076 R)
• M41: 5,263,900 km (0.078 R)
• M42: 5,481,715 km (0.062 R)
• M43: 5,572,221 km (0.089 R)
• M44: 5,741,716 km (0.112 R)
• M45: 5,833,719 km (0.072 R)
• M46: 6,300,913 km (0.064 R)
• M47: 6,491,201 km (0.077 R)
• M48: 6,697,197 km (0.056 R)
• M49: 6,919,350 km (0.061 R)
• M50: 6,989,362 km (0.105 R)
• M51: 7,328,201 km (0.066 R)
• M52: 7,413,771 km (0.119 R)
• M53: 7,485,279 km (0.107 R)
• M54: 7,571,447 km (0.037 R)
• M55: 7,658,065 km (0.107 R)
• M56: 7,715,959 km (0.113 R)
• M57: 7,817,536 km (0.105 R)
• M58: 7,904,901 km (0.085 R)
• M59: 7,992,715 km (0.116 R)
• M60: 8,676,527 km (0.104 R)
• M61: 9,101,834 km (0.088 R)
• M62: 9,270,879 km (0.055 R)
• M63: 9,379,039 km (0.111 R)
• M64: 9,487,497 km (0.095 R)
• M65: 9,721,468 km (0.075 R)
• M66: 9,846,981 km (0.118 R)
• M67: 10,147,224 km (0.071 R)
• M68: 10,386,580 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.7

Radius: 12.1

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.94 AU - 2.66 AU

Year: 2366 Days

Day: 5.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 67,648,041 km

• M1: 156,330 km (0.118 R)
• M2: 231,877 km (0.058 R)
• M3: 421,417 km (0.11 R)
• M4: 508,932 km (0.037 R)
• M5: 622,926 km (0.116 R)
• M6: 760,556 km (0.117 R)
• M7: 1,045,540 km (0.11 R)
• M8: 1,148,313 km (0.088 R)
• M9: 1,677,291 km (0.118 R)
• M10: 1,847,235 km (0.101 R)
• M11: 2,113,070 km (0.099 R)
• M12: 2,381,000 km (0.096 R)
• M13: 2,497,686 km (0.065 R)
• M14: 2,670,920 km (0.083 R)
• M15: 2,882,003 km (0.067 R)
• M16: 3,018,287 km (0.102 R)
• M17: 3,273,501 km (0.119 R)
• M18: 3,439,853 km (0.072 R)
• M19: 3,596,632 km (0.051 R)
• M20: 3,867,703 km (0.104 R)
• M21: 4,416,728 km (0.12 R)
• M22: 4,548,074 km (0.1 R)
• M23: 4,936,131 km (0.095 R)
• M24: 5,045,039 km (0.107 R)
• M25: 5,127,317 km (0.067 R)
• M26: 5,307,134 km (0.097 R)
• M27: 5,517,169 km (0.073 R)
• M28: 5,644,627 km (0.037 R)
• M29: 5,744,409 km (0.109 R)
• M30: 6,149,370 km (0.119 R)
• M31: 6,340,556 km (0.06 R)
• M32: 6,503,917 km (0.119 R)
• M33: 6,774,240 km (0.113 R)
• M34: 6,880,455 km (0.099 R)
• M35: 7,155,865 km (0.102 R)
• M36: 7,233,057 km (0.106 R)
• M37: 7,326,107 km (0.106 R)
• M38: 7,466,280 km (0.063 R)
• M39: 7,623,208 km (0.089 R)
• M40: 7,940,206 km (0.027 R)
• M41: 8,068,262 km (0.069 R)
• M42: 8,261,692 km (0.073 R)
• M43: 8,440,312 km (0.105 R)
• M44: 8,718,863 km (0.074 R)
• M45: 8,884,169 km (0.06 R)
• M46: 9,555,863 km (0.115 R)
• M47: 9,658,039 km (0.088 R)
• M48: 9,897,844 km (0.074 R)
• M49: 10,646,731 km (0.095 R)
• M50: 11,001,278 km (0.109 R)
• M51: 11,162,245 km (0.084 R)
• M52: 11,251,854 km (0.065 R)
• M53: 11,450,071 km (0.116 R)
• M54: 11,923,100 km (0.075 R)
• M55: 12,106,806 km (0.099 R)
• M56: 12,309,810 km (0.091 R)
• M57: 12,402,561 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.4

Radius: 10.4

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.6 AU - 3.98 AU

Year: 4047 Days

Day: 9.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 67,648,041 km

• M1: 158,723 km (0.026 R)
• M2: 420,968 km (0.076 R)
• M3: 496,815 km (0.089 R)
• M4: 647,310 km (0.07 R)
• M5: 747,391 km (0.102 R)
• M6: 995,723 km (0.116 R)
• M7: 1,157,588 km (0.054 R)
• M8: 1,293,573 km (0.087 R)
• M9: 1,422,975 km (0.1 R)
• M10: 1,520,064 km (0.072 R)
• M11: 1,619,397 km (0.049 R)
• M12: 2,176,649 km (0.067 R)
• M13: 2,550,195 km (0.109 R)
• M14: 3,180,002 km (0.105 R)
• M15: 3,324,513 km (0.114 R)
• M16: 3,620,418 km (0.075 R)
• M17: 3,687,288 km (0.098 R)
• M18: 3,890,592 km (0.111 R)
• M19: 4,576,797 km (0.09 R)
• M20: 5,224,257 km (0.045 R)
• M21: 5,376,398 km (0.056 R)
• M22: 5,491,439 km (0.098 R)
• M23: 5,684,869 km (0.077 R)
• M24: 6,019,220 km (0.048 R)
• M25: 6,604,297 km (0.049 R)
• M26: 6,768,855 km (0.098 R)
• M27: 6,872,377 km (0.111 R)
• M28: 7,123,252 km (0.074 R)
• M29: 7,228,569 km (0.11 R)
• M30: 7,398,213 km (0.06 R)
• M31: 7,505,026 km (0.112 R)
• M32: 7,828,307 km (0.051 R)
• M33: 7,915,373 km (0.043 R)
• M34: 8,024,430 km (0.088 R)
• M35: 8,090,253 km (0.068 R)
• M36: 8,178,216 km (0.092 R)
• M37: 8,466,342 km (0.109 R)
• M38: 9,489,292 km (0.067 R)
• M39: 9,628,717 km (0.035 R)
• M40: 9,909,363 km (0.091 R)
• M41: 10,527,053 km (0.107 R)
• M42: 10,986,168 km (0.038 R)
• M43: 11,377,965 km (0.105 R)
• M44: 11,899,164 km (0.115 R)
• M45: 12,049,660 km (0.105 R)
• M46: 12,453,574 km (0.107 R)
• M47: 13,197,375 km (0.116 R)
• M48: 14,220,175 km (0.12 R)
• M49: 14,379,796 km (0.049 R)
• M50: 14,486,459 km (0.095 R)
• M51: 14,943,032 km (0.105 R)
• M52: 15,051,191 km (0.11 R)
• M53: 15,486,372 km (0.103 R)
• M54: 15,623,254 km (0.083 R)
• M55: 15,898,065 km (0.099 R)
• M56: 16,341,174 km (0.115 R)
• M57: 16,480,449 km (0.07 R)
• M58: 16,732,223 km (0.091 R)
• M59: 16,816,446 km (0.102 R)
• M60: 17,098,139 km (0.112 R)
• M61: 17,495,172 km (0.085 R)
• M62: 17,780,754 km (0.068 R)
• M63: 17,924,069 km (0.065 R)
• M64: 18,327,385 km (0.086 R)
• M65: 18,501,068 km (0.11 R)
• M66: 18,908,722 km (0.109 R)
• M67: 19,172,314 km (0.1 R)
• M68: 19,260,427 km (0.101 R)
• M69: 19,496,193 km (0.03 R)
• M70: 19,792,097 km (0.089 R)
• M71: 19,940,648 km (0.066 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 957.3

Radius: 7.1

Gravity: 18.99 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 7.36 AU - 7.82 AU

Year: 14183 Days

Day: 23.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 67,648,041 km

• M1: 146,008 km (0.109 R)
• M2: 212,429 km (0.072 R)
• M3: 279,449 km (0.097 R)
• M4: 388,057 km (0.069 R)
• M5: 511,774 km (0.054 R)
• M6: 569,070 km (0.085 R)
• M7: 821,143 km (0.118 R)
• M8: 1,851,872 km (0.117 R)
• M9: 2,419,895 km (0.111 R)
• M10: 3,038,333 km (0.03 R)
• M11: 3,254,950 km (0.119 R)
• M12: 3,665,297 km (0.096 R)
• M13: 4,131,444 km (0.051 R)
• M14: 4,250,973 km (0.041 R)
• M15: 4,493,471 km (0.044 R)
• M16: 5,333,912 km (0.091 R)
• M17: 5,507,745 km (0.113 R)
• M18: 6,130,970 km (0.117 R)
• M19: 6,450,959 km (0.098 R)
• M20: 6,823,458 km (0.115 R)
• M21: 7,298,731 km (0.055 R)
• M22: 7,883,209 km (0.077 R)
• M23: 8,482,648 km (0.111 R)
• M24: 9,096,747 km (0.106 R)
• M25: 9,200,419 km (0.09 R)
• M26: 9,304,539 km (0.095 R)
• M27: 9,725,058 km (0.073 R)
• M28: 10,044,450 km (0.051 R)
• M29: 10,259,422 km (0.08 R)
• M30: 11,078,620 km (0.084 R)
• M31: 11,468,173 km (0.096 R)
• M32: 12,953,829 km (0.074 R)
• M33: 13,305,235 km (0.094 R)
• M34: 13,600,541 km (0.05 R)
• M35: 13,719,172 km (0.106 R)
• M36: 13,838,252 km (0.05 R)
• M37: 14,017,470 km (0.082 R)
• M38: 15,293,390 km (0.096 R)
• M39: 16,416,422 km (0.088 R)
• M40: 17,695,035 km (0.106 R)
• M41: 18,215,336 km (0.068 R)
• M42: 19,271,198 km (0.071 R)
• M43: 19,471,360 km (0.094 R)
• M44: 21,996,273 km (0.096 R)
• M45: 22,415,296 km (0.12 R)
• M46: 23,403,240 km (0.061 R)
• M47: 23,545,658 km (0.116 R)
• M48: 23,759,583 km (0.11 R)
• M49: 24,117,720 km (0.039 R)
• M50: 25,421,615 km (0.077 R)
• M51: 25,714,528 km (0.105 R)
• M52: 27,195,547 km (0.044 R)
• M53: 28,324,412 km (0.065 R)
• M54: 28,856,532 km (0.048 R)
• M55: 29,699,216 km (0.067 R)
• M56: 31,801,815 km (0.074 R)
• M57: 32,038,329 km (0.12 R)
• M58: 32,117,316 km (0.098 R)
• M59: 36,230,660 km (0.115 R)
• M60: 36,890,685 km (0.078 R)
• M61: 38,474,478 km (0.099 R)
• M62: 39,232,341 km (0.119 R)
• M63: 39,995,140 km (0.068 R)
• M64: 40,335,775 km (0.081 R)
• M65: 40,591,737 km (0.116 R)
• M66: 40,677,307 km (0.099 R)
• M67: 42,486,094 km (0.096 R)
• M68: 44,585,401 km (0.048 R)
• M69: 45,027,014 km (0.113 R)
• M70: 45,292,700 km (0.111 R)
• M71: 45,558,835 km (0.071 R)
• M72: 48,611,529 km (0.097 R)
• M73: 51,359,492 km (0.099 R)
• M74: 51,729,597 km (0.118 R)
• M75: 52,472,650 km (0.069 R)
• M76: 52,752,248 km (0.096 R)
• M77: 53,500,088 km (0.097 R)
• M78: 54,439,862 km (0.105 R)
• M79: 54,628,505 km (0.099 R)
• M80: 55,574,861 km (0.111 R)
• M81: 60,875,413 km (0.092 R)
• M82: 60,973,250 km (0.114 R)
• M83: 61,169,223 km (0.099 R)
• M84: 61,659,754 km (0.098 R)
• M85: 63,834,010 km (0.107 R)
• M86: 64,132,308 km (0.079 R)
• M87: 64,730,550 km (0.082 R)
• M88: 66,133,628 km (0.087 R)
• M89: 66,234,308 km (0.089 R)
• M90: 66,536,346 km (0.069 R)
• M91: 67,445,452 km (0.081 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 285 - 10,449 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit