🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.55

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.69 AU - 0.69 AU

Year: 250 Days

Day: 23.2 Hours

Environment

Temp: -17 °C

Axial Tilt: 15.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.65 AU - 1.03 AU

Year: 336 Days

Day: 27.3 Hours

Environment

Temp: -48 °C

Axial Tilt: 37.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.95 AU - 1.41 AU

Year: 560 Days

Day: 31.6 Hours

Environment

Temp: -79 °C

Axial Tilt: 48.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1 AU - 1.42 AU

Year: 581 Days

Day: 27.3 Hours

Environment

Temp: -79 °C

Axial Tilt: 47.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 5.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.1

Radius: 10.8

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 4.06 AU - 6.5 AU

Year: 5297 Days

Day: 9.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 62,291,667 km

• M1: 137,331 km (0.054 R)
• M2: 283,338 km (0.045 R)
• M3: 383,270 km (0.112 R)
• M4: 824,434 km (0.08 R)
• M5: 923,318 km (0.112 R)
• M6: 1,133,653 km (0.113 R)
• M7: 1,672,953 km (0.099 R)
• M8: 1,875,509 km (0.044 R)
• M9: 2,489,309 km (0.075 R)
• M10: 2,700,242 km (0.09 R)
• M11: 3,049,852 km (0.063 R)
• M12: 3,507,172 km (0.118 R)
• M13: 3,577,783 km (0.111 R)
• M14: 3,672,478 km (0.111 R)
• M15: 3,961,950 km (0.074 R)
• M16: 4,460,859 km (0.048 R)
• M17: 4,691,838 km (0.082 R)
• M18: 4,769,779 km (0.089 R)
• M19: 5,032,622 km (0.075 R)
• M20: 5,139,136 km (0.078 R)
• M21: 5,246,397 km (0.078 R)
• M22: 5,354,407 km (0.051 R)
• M23: 5,989,749 km (0.054 R)
• M24: 6,619,855 km (0.085 R)
• M25: 6,913,217 km (0.049 R)
• M26: 7,391,631 km (0.078 R)
• M27: 7,819,182 km (0.049 R)
• M28: 7,942,749 km (0.066 R)
• M29: 8,129,447 km (0.107 R)
• M30: 8,286,076 km (0.089 R)
• M31: 9,246,944 km (0.095 R)
• M32: 10,141,838 km (0.108 R)
• M33: 10,310,584 km (0.069 R)
• M34: 11,098,965 km (0.04 R)
• M35: 11,517,989 km (0.08 R)
• M36: 11,942,099 km (0.117 R)
• M37: 12,084,666 km (0.116 R)
• M38: 12,443,551 km (0.076 R)
• M39: 12,588,062 km (0.097 R)
• M40: 13,025,038 km (0.079 R)
• M41: 13,801,600 km (0.093 R)
• M42: 14,026,296 km (0.081 R)
• M43: 15,013,792 km (0.069 R)
• M44: 15,554,887 km (0.032 R)
• M45: 15,671,723 km (0.098 R)
• M46: 15,827,904 km (0.098 R)
• M47: 16,338,930 km (0.09 R)
• M48: 17,055,504 km (0.11 R)
• M49: 17,539,004 km (0.1 R)
• M50: 17,660,477 km (0.079 R)
• M51: 18,108,673 km (0.069 R)
• M52: 18,601,897 km (0.11 R)
• M53: 19,057,871 km (0.095 R)
• M54: 19,141,197 km (0.12 R)
• M55: 19,224,523 km (0.076 R)
• M56: 19,308,148 km (0.092 R)
• M57: 19,559,473 km (0.093 R)
• M58: 20,023,077 km (0.12 R)
• M59: 20,533,056 km (0.089 R)
• M60: 20,704,046 km (0.118 R)
• M61: 20,832,551 km (0.042 R)
• M62: 21,957,527 km (0.08 R)
• M63: 23,413,563 km (0.111 R)
• M64: 23,726,372 km (0.093 R)
• M65: 24,809,610 km (0.061 R)
• M66: 25,357,288 km (0.089 R)
• M67: 25,540,695 km (0.095 R)
• M68: 27,446,273 km (0.116 R)
• M69: 27,729,013 km (0.118 R)
• M70: 27,870,682 km (0.073 R)
• M71: 28,202,340 km (0.099 R)
• M72: 28,535,195 km (0.027 R)
• M73: 28,726,082 km (0.112 R)
• M74: 29,061,032 km (0.067 R)
• M75: 29,734,821 km (0.038 R)
• M76: 30,365,077 km (0.106 R)
• M77: 30,511,234 km (0.116 R)
• M78: 30,852,915 km (0.119 R)
• M79: 32,481,138 km (0.114 R)
• M80: 33,330,854 km (0.082 R)
• M81: 33,632,444 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 981.2

Radius: 12.4

Gravity: 6.38 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 4.69 AU - 5.91 AU

Year: 5327 Days

Day: 8.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 62,291,667 km

• M1: 200,611 km (0.105 R)
• M2: 447,746 km (0.091 R)
• M3: 597,793 km (0.081 R)
• M4: 851,511 km (0.092 R)
• M5: 939,175 km (0.082 R)
• M6: 1,550,881 km (0.074 R)
• M7: 1,927,269 km (0.037 R)
• M8: 2,719,988 km (0.036 R)
• M9: 2,831,439 km (0.1 R)
• M10: 2,944,385 km (0.1 R)
• M11: 3,292,350 km (0.057 R)
• M12: 3,387,494 km (0.115 R)
• M13: 3,556,241 km (0.082 R)
• M14: 3,752,363 km (0.08 R)
• M15: 4,155,679 km (0.098 R)
• M16: 4,441,112 km (0.115 R)
• M17: 4,599,686 km (0.086 R)
• M18: 5,335,857 km (0.074 R)
• M19: 5,732,142 km (0.116 R)
• M20: 6,403,986 km (0.078 R)
• M21: 6,493,595 km (0.106 R)
• M22: 6,825,253 km (0.064 R)
• M23: 6,947,325 km (0.115 R)
• M24: 7,348,995 km (0.114 R)
• M25: 7,631,436 km (0.08 R)
• M26: 7,981,794 km (0.087 R)
• M27: 8,272,164 km (0.063 R)
• M28: 8,500,600 km (0.118 R)
• M29: 8,599,035 km (0.115 R)
• M30: 9,164,515 km (0.098 R)
• M31: 9,333,112 km (0.045 R)
• M32: 9,605,081 km (0.099 R)
• M33: 10,122,091 km (0.115 R)
• M34: 11,255,295 km (0.117 R)
• M35: 12,057,588 km (0.069 R)
• M36: 12,615,140 km (0.082 R)
• M37: 12,878,282 km (0.099 R)
• M38: 13,219,365 km (0.096 R)
• M39: 13,448,250 km (0.09 R)
• M40: 13,678,631 km (0.11 R)
• M41: 13,948,954 km (0.08 R)
• M42: 14,494,986 km (0.119 R)
• M43: 14,968,613 km (0.109 R)
• M44: 15,167,429 km (0.119 R)
• M45: 15,287,257 km (0.108 R)
• M46: 15,487,419 km (0.074 R)
• M47: 17,495,770 km (0.107 R)
• M48: 17,663,320 km (0.055 R)
• M49: 18,126,774 km (0.106 R)
• M50: 18,338,904 km (0.091 R)
• M51: 18,508,997 km (0.088 R)
• M52: 18,679,837 km (0.103 R)
• M53: 19,281,520 km (0.054 R)
• M54: 20,327,807 km (0.048 R)
• M55: 21,213,876 km (0.096 R)
• M56: 21,392,645 km (0.091 R)
• M57: 21,706,651 km (0.073 R)
• M58: 22,248,345 km (0.08 R)
• M59: 22,339,151 km (0.114 R)
• M60: 22,840,453 km (0.066 R)
• M61: 23,023,561 km (0.108 R)
• M62: 23,391,422 km (0.074 R)
• M63: 23,761,228 km (0.042 R)
• M64: 23,853,979 km (0.041 R)
• M65: 24,319,677 km (0.11 R)
• M66: 24,694,270 km (0.113 R)
• M67: 25,686,852 km (0.092 R)
• M68: 25,829,718 km (0.098 R)
• M69: 26,259,961 km (0.053 R)
• M70: 26,788,939 km (0.113 R)
• M71: 27,955,204 km (0.108 R)
• M72: 28,151,327 km (0.085 R)
• M73: 28,840,973 km (0.099 R)
• M74: 30,086,226 km (0.112 R)
• M75: 30,791,281 km (0.059 R)
• M76: 31,095,114 km (0.101 R)
• M77: 31,910,273 km (0.1 R)
• M78: 32,269,158 km (0.119 R)
• M79: 32,474,706 km (0.069 R)
• M80: 32,680,852 km (0.085 R)
• M81: 35,187,514 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.3

Radius: 9.4

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 4.34 AU - 6.56 AU

Year: 5554 Days

Day: 14.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 62,291,667 km

• M1: 133,591 km (0.073 R)
• M2: 203,453 km (0.107 R)
• M3: 459,265 km (0.079 R)
• M4: 692,040 km (0.077 R)
• M5: 801,097 km (0.053 R)
• M6: 871,108 km (0.117 R)
• M7: 1,732,194 km (0.115 R)
• M8: 1,907,373 km (0.079 R)
• M9: 1,979,180 km (0.075 R)
• M10: 2,076,418 km (0.091 R)
• M11: 2,262,967 km (0.099 R)
• M12: 2,520,275 km (0.117 R)
• M13: 2,639,206 km (0.072 R)
• M14: 2,760,081 km (0.072 R)
• M15: 2,855,375 km (0.117 R)
• M16: 2,951,716 km (0.115 R)
• M17: 3,035,191 km (0.097 R)
• M18: 3,218,897 km (0.119 R)
• M19: 3,362,811 km (0.119 R)
• M20: 3,671,730 km (0.082 R)
• M21: 4,020,742 km (0.114 R)
• M22: 4,144,759 km (0.063 R)
• M23: 4,412,389 km (0.091 R)
• M24: 4,540,146 km (0.094 R)
• M25: 4,653,092 km (0.109 R)
• M26: 4,832,460 km (0.083 R)
• M27: 5,047,432 km (0.118 R)
• M28: 5,164,567 km (0.078 R)
• M29: 5,231,886 km (0.114 R)
• M30: 5,538,263 km (0.099 R)
• M31: 5,868,276 km (0.059 R)
• M32: 6,366,137 km (0.115 R)
• M33: 6,510,948 km (0.092 R)
• M34: 6,896,163 km (0.084 R)
• M35: 7,119,662 km (0.11 R)
• M36: 7,573,691 km (0.08 R)
• M37: 7,843,117 km (0.038 R)
• M38: 8,154,730 km (0.091 R)
• M39: 8,213,521 km (0.093 R)
• M40: 8,331,704 km (0.068 R)
• M41: 8,870,705 km (0.11 R)
• M42: 9,215,827 km (0.077 R)
• M43: 9,297,657 km (0.063 R)
• M44: 9,793,873 km (0.109 R)
• M45: 10,213,944 km (0.114 R)
• M46: 10,404,831 km (0.075 R)
• M47: 11,071,738 km (0.092 R)
• M48: 11,531,303 km (0.079 R)
• M49: 11,863,410 km (0.078 R)
• M50: 12,064,171 km (0.062 R)
• M51: 12,266,128 km (0.049 R)
• M52: 12,650,594 km (0.098 R)
• M53: 12,855,843 km (0.064 R)
• M54: 13,269,481 km (0.054 R)
• M55: 13,338,745 km (0.062 R)
• M56: 13,570,920 km (0.089 R)
• M57: 13,664,120 km (0.102 R)
• M58: 13,780,956 km (0.108 R)
• M59: 14,133,408 km (0.118 R)
• M60: 14,275,227 km (0.113 R)
• M61: 14,441,281 km (0.06 R)
• M62: 14,919,246 km (0.072 R)
• M63: 16,533,257 km (0.061 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501.2

Radius: 8.8

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 8.28 AU - 9.54 AU

Year: 11611 Days

Day: 10.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 62,291,667 km

• M1: 344,524 km (0.084 R)
• M2: 625,768 km (0.113 R)
• M3: 844,330 km (0.101 R)
• M4: 934,987 km (0.076 R)
• M5: 1,106,875 km (0.103 R)
• M6: 1,166,415 km (0.071 R)
• M7: 2,340,758 km (0.048 R)
• M8: 2,792,394 km (0.108 R)
• M9: 3,070,795 km (0.045 R)
• M10: 3,184,789 km (0.078 R)
• M11: 3,299,979 km (0.111 R)
• M12: 3,836,138 km (0.043 R)
• M13: 4,083,124 km (0.094 R)
• M14: 4,528,028 km (0.12 R)
• M15: 4,789,077 km (0.075 R)
• M16: 5,636,698 km (0.08 R)
• M17: 6,788,153 km (0.113 R)
• M18: 7,011,951 km (0.028 R)
• M19: 7,238,293 km (0.114 R)
• M20: 7,659,411 km (0.098 R)
• M21: 7,892,634 km (0.056 R)
• M22: 8,049,263 km (0.034 R)
• M23: 8,365,812 km (0.119 R)
• M24: 9,011,028 km (0.044 R)
• M25: 9,133,848 km (0.072 R)
• M26: 9,714,138 km (0.102 R)
• M27: 10,136,004 km (0.076 R)
• M28: 10,520,769 km (0.068 R)
• M29: 10,650,172 km (0.082 R)
• M30: 11,437,206 km (0.103 R)
• M31: 11,882,559 km (0.094 R)
• M32: 12,698,466 km (0.106 R)
• M33: 13,206,051 km (0.041 R)
• M34: 13,299,101 km (0.057 R)
• M35: 14,575,620 km (0.08 R)
• M36: 15,106,991 km (0.079 R)
• M37: 15,595,428 km (0.119 R)
• M38: 15,891,034 km (0.108 R)
• M39: 16,337,883 km (0.11 R)
• M40: 16,738,655 km (0.104 R)
• M41: 17,243,997 km (0.087 R)
• M42: 18,842,600 km (0.06 R)
• M43: 19,262,671 km (0.054 R)
• M44: 19,579,818 km (0.088 R)
• M45: 20,112,387 km (0.117 R)
• M46: 20,219,349 km (0.036 R)
• M47: 20,974,070 km (0.029 R)
• M48: 21,191,436 km (0.116 R)
• M49: 21,518,906 km (0.079 R)
• M50: 22,068,229 km (0.071 R)
• M51: 22,511,188 km (0.066 R)
• M52: 22,622,340 km (0.053 R)
• M53: 23,405,634 km (0.117 R)
• M54: 23,913,968 km (0.046 R)
• M55: 24,197,904 km (0.113 R)
• M56: 25,287,126 km (0.083 R)
• M57: 25,576,299 km (0.104 R)
• M58: 26,921,184 km (0.105 R)
• M59: 27,157,399 km (0.055 R)
• M60: 28,288,808 km (0.099 R)
• M61: 28,950,928 km (0.034 R)
• M62: 29,314,152 km (0.066 R)
• M63: 29,861,979 km (0.078 R)
• M64: 31,091,374 km (0.119 R)
• M65: 31,215,241 km (0.107 R)
• M66: 31,712,205 km (0.108 R)
• M67: 32,211,862 km (0.04 R)
• M68: 32,840,024 km (0.084 R)
• M69: 33,408,944 km (0.081 R)
• M70: 34,941,724 km (0.111 R)
• M71: 35,135,005 km (0.048 R)
• M72: 36,171,419 km (0.101 R)
• M73: 36,824,264 km (0.117 R)
• M74: 37,086,509 km (0.049 R)
• M75: 38,009,378 km (0.114 R)
• M76: 38,075,500 km (0.104 R)
• M77: 39,206,760 km (0.108 R)
• M78: 40,890,484 km (0.085 R)
• M79: 41,775,205 km (0.06 R)
• M80: 42,941,770 km (0.096 R)
• M81: 43,148,813 km (0.074 R)
• M82: 45,447,384 km (0.048 R)
• M83: 45,799,089 km (0.094 R)
• M84: 46,434,431 km (0.119 R)
• M85: 46,788,679 km (0.098 R)

Asteroid Belt

Center: 9.71 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 10.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 679.5

Radius: 7.6

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 8.02 AU - 13 AU

Year: 14875 Days

Day: 20.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 62,291,667 km

• M1: 186,698 km (0.05 R)
• M2: 370,404 km (0.081 R)
• M3: 610,808 km (0.071 R)
• M4: 832,063 km (0.106 R)
• M5: 1,008,589 km (0.069 R)
• M6: 1,078,002 km (0.113 R)
• M7: 1,197,381 km (0.082 R)
• M8: 1,475,633 km (0.063 R)
• M9: 2,031,988 km (0.096 R)
• M10: 2,180,539 km (0.083 R)
• M11: 2,488,561 km (0.117 R)
• M12: 2,744,971 km (0.069 R)
• M13: 2,810,346 km (0.065 R)
• M14: 2,909,529 km (0.113 R)
• M15: 3,248,368 km (0.038 R)
• M16: 3,352,638 km (0.109 R)
• M17: 4,149,995 km (0.114 R)
• M18: 4,225,392 km (0.075 R)
• M19: 4,804,784 km (0.101 R)
• M20: 4,923,715 km (0.074 R)
• M21: 5,491,588 km (0.072 R)
• M22: 5,867,528 km (0.069 R)
• M23: 5,952,200 km (0.11 R)
• M24: 6,122,742 km (0.115 R)
• M25: 6,251,845 km (0.099 R)
• M26: 6,468,911 km (0.07 R)
• M27: 6,600,258 km (0.107 R)
• M28: 7,089,742 km (0.039 R)
• M29: 7,270,756 km (0.081 R)
• M30: 7,453,116 km (0.091 R)
• M31: 9,063,985 km (0.052 R)
• M32: 10,263,461 km (0.074 R)
• M33: 11,090,588 km (0.058 R)
• M34: 11,992,663 km (0.091 R)
• M35: 13,641,231 km (0.12 R)
• M36: 13,922,775 km (0.104 R)
• M37: 14,320,406 km (0.101 R)
• M38: 14,549,141 km (0.116 R)
• M39: 14,721,627 km (0.063 R)
• M40: 14,952,606 km (0.06 R)
• M41: 15,184,782 km (0.098 R)
• M42: 17,145,113 km (0.12 R)
• M43: 17,388,060 km (0.112 R)
• M44: 18,557,915 km (0.038 R)
• M45: 19,246,664 km (0.098 R)
• M46: 19,689,324 km (0.106 R)
• M47: 20,456,013 km (0.117 R)
• M48: 21,232,575 km (0.119 R)
• M49: 21,428,100 km (0.119 R)
• M50: 21,886,916 km (0.063 R)
• M51: 23,417,003 km (0.083 R)
• M52: 23,484,323 km (0.111 R)
• M53: 23,889,583 km (0.089 R)
• M54: 24,160,954 km (0.069 R)
• M55: 26,509,042 km (0.101 R)
• M56: 28,281,477 km (0.092 R)
• M57: 28,496,749 km (0.104 R)
• M58: 29,726,742 km (0.12 R)
• M59: 30,458,426 km (0.095 R)
• M60: 31,790,296 km (0.087 R)
• M61: 32,238,491 km (0.08 R)
• M62: 33,292,258 km (0.118 R)
• M63: 35,433,752 km (0.095 R)
• M64: 36,131,476 km (0.106 R)
• M65: 37,304,323 km (0.096 R)
• M66: 37,619,227 km (0.089 R)
• M67: 37,935,028 km (0.112 R)
• M68: 41,140,910 km (0.117 R)
• M69: 41,710,729 km (0.076 R)
• M70: 45,520,238 km (0.072 R)
• M71: 45,604,312 km (0.106 R)
• M72: 45,940,908 km (0.093 R)
• M73: 46,362,923 km (0.107 R)
• M74: 47,722,170 km (0.101 R)
• M75: 48,664,038 km (0.067 R)
• M76: 49,958,508 km (0.101 R)
• M77: 50,045,125 km (0.044 R)
• M78: 50,131,892 km (0.106 R)
• M79: 51,877,250 km (0.068 R)
• M80: 52,580,959 km (0.117 R)
• M81: 54,532,463 km (0.105 R)
• M82: 54,979,312 km (0.086 R)
• M83: 55,247,990 km (0.092 R)
• M84: 55,337,599 km (0.104 R)
• M85: 56,959,688 km (0.105 R)
• M86: 57,413,120 km (0.104 R)
• M87: 57,776,642 km (0.065 R)
• M88: 58,414,677 km (0.065 R)
• M89: 60,804,952 km (0.12 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 412 - 14,619 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit