🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.44 AU - 0.62 AU

Year: 245 Days

Day: 43.2 Hours

Environment

Temp: -116 °C

Axial Tilt: 18.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,413,228 km

• M1: 30,668 km (0.094 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.6 AU - 0.62 AU

Year: 303 Days

Day: 12.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,413,228 km

• M1: 156,629 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.3

Radius: 11.9

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.18 AU - 1.6 AU

Year: 1042 Days

Day: 8.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 47,413,228 km

• M1: 148,251 km (0.068 R)
• M2: 419,622 km (0.085 R)
• M3: 505,042 km (0.067 R)
• M4: 667,207 km (0.053 R)
• M5: 755,469 km (0.108 R)
• M6: 904,918 km (0.102 R)
• M7: 980,614 km (0.069 R)
• M8: 1,058,704 km (0.108 R)
• M9: 1,208,900 km (0.078 R)
• M10: 1,652,308 km (0.1 R)
• M11: 1,732,343 km (0.041 R)
• M12: 1,957,339 km (0.089 R)
• M13: 2,065,797 km (0.09 R)
• M14: 2,264,463 km (0.074 R)
• M15: 2,362,150 km (0.095 R)
• M16: 2,561,864 km (0.102 R)
• M17: 2,715,351 km (0.112 R)
• M18: 2,793,291 km (0.101 R)
• M19: 2,880,806 km (0.088 R)
• M20: 3,221,740 km (0.089 R)
• M21: 3,332,143 km (0.076 R)
• M22: 3,472,017 km (0.081 R)
• M23: 3,632,984 km (0.038 R)
• M24: 3,786,621 km (0.117 R)
• M25: 3,942,652 km (0.074 R)
• M26: 4,021,340 km (0.066 R)
• M27: 4,291,215 km (0.077 R)
• M28: 4,433,482 km (0.108 R)
• M29: 4,598,040 km (0.094 R)
• M30: 5,029,032 km (0.062 R)
• M31: 5,211,541 km (0.043 R)
• M32: 5,298,308 km (0.117 R)
• M33: 5,484,108 km (0.1 R)
• M34: 5,594,362 km (0.097 R)
• M35: 5,694,293 km (0.096 R)
• M36: 5,772,383 km (0.085 R)
• M37: 6,054,525 km (0.111 R)
• M38: 6,157,149 km (0.12 R)
• M39: 6,364,193 km (0.065 R)
• M40: 6,596,967 km (0.03 R)
• M41: 6,880,156 km (0.092 R)
• M42: 7,047,107 km (0.115 R)
• M43: 7,191,319 km (0.055 R)
• M44: 7,300,226 km (0.06 R)
• M45: 7,778,192 km (0.111 R)
• M46: 7,852,542 km (0.088 R)
• M47: 7,927,191 km (0.113 R)
• M48: 8,064,821 km (0.041 R)
• M49: 8,241,048 km (0.07 R)
• M50: 8,342,176 km (0.114 R)
• M51: 8,456,618 km (0.107 R)
• M52: 8,648,552 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480

Radius: 11.7

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.13 AU - 1.87 AU

Year: 1168 Days

Day: 7.5 Hours

Environment

Temp: -176 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 47,413,228 km

• M1: 157,078 km (0.109 R)
• M2: 271,371 km (0.036 R)
• M3: 372,349 km (0.049 R)
• M4: 496,515 km (0.101 R)
• M5: 757,414 km (0.101 R)
• M6: 885,919 km (0.11 R)
• M7: 1,089,970 km (0.113 R)
• M8: 1,194,389 km (0.092 R)
• M9: 1,280,558 km (0.09 R)
• M10: 1,361,640 km (0.101 R)
• M11: 1,607,429 km (0.067 R)
• M12: 1,735,934 km (0.107 R)
• M13: 1,834,668 km (0.101 R)
• M14: 2,072,529 km (0.091 R)
• M15: 2,186,373 km (0.114 R)
• M16: 2,293,485 km (0.034 R)
• M17: 2,448,319 km (0.074 R)
• M18: 2,691,864 km (0.061 R)
• M19: 2,768,458 km (0.027 R)
• M20: 2,845,800 km (0.111 R)
• M21: 2,923,890 km (0.082 R)
• M22: 3,192,867 km (0.064 R)
• M23: 3,407,690 km (0.118 R)
• M24: 3,659,014 km (0.066 R)
• M25: 3,744,136 km (0.091 R)
• M26: 3,884,010 km (0.118 R)
• M27: 4,404,161 km (0.114 R)
• M28: 4,620,779 km (0.106 R)
• M29: 4,899,480 km (0.092 R)
• M30: 5,005,545 km (0.11 R)
• M31: 5,219,769 km (0.099 R)
• M32: 5,510,138 km (0.119 R)
• M33: 5,644,926 km (0.117 R)
• M34: 5,731,394 km (0.07 R)
• M35: 5,805,744 km (0.057 R)
• M36: 5,930,508 km (0.091 R)
• M37: 6,220,878 km (0.026 R)
• M38: 6,399,947 km (0.08 R)
• M39: 6,580,810 km (0.104 R)
• M40: 6,776,335 km (0.074 R)
• M41: 7,334,335 km (0.067 R)
• M42: 7,455,808 km (0.071 R)
• M43: 7,755,602 km (0.051 R)
• M44: 7,893,232 km (0.098 R)
• M45: 8,184,948 km (0.112 R)
• M46: 8,409,495 km (0.102 R)
• M47: 8,508,379 km (0.069 R)
• M48: 8,593,500 km (0.082 R)
• M49: 8,678,920 km (0.119 R)
• M50: 8,965,550 km (0.075 R)
• M51: 9,328,325 km (0.051 R)
• M52: 9,621,985 km (0.118 R)
• M53: 9,695,887 km (0.108 R)
• M54: 9,859,098 km (0.116 R)
• M55: 9,963,517 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.6

Radius: 8.5

Gravity: 9.46 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.37 AU - 1.97 AU

Year: 1372 Days

Day: 14.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 47,413,228 km

• M1: 118,332 km (0.048 R)
• M2: 188,493 km (0.074 R)
• M3: 296,054 km (0.043 R)
• M4: 349,909 km (0.105 R)
• M5: 435,629 km (0.083 R)
• M6: 499,358 km (0.09 R)
• M7: 929,751 km (0.119 R)
• M8: 1,030,879 km (0.096 R)
• M9: 1,127,669 km (0.114 R)
• M10: 1,202,318 km (0.101 R)
• M11: 1,295,817 km (0.078 R)
• M12: 1,427,612 km (0.04 R)
• M13: 1,666,520 km (0.074 R)
• M14: 1,908,270 km (0.076 R)
• M15: 2,120,251 km (0.113 R)
• M16: 2,244,866 km (0.11 R)
• M17: 2,361,253 km (0.052 R)
• M18: 2,425,580 km (0.117 R)
• M19: 2,534,188 km (0.078 R)
• M20: 2,722,382 km (0.086 R)
• M21: 2,778,780 km (0.111 R)
• M22: 2,869,586 km (0.112 R)
• M23: 2,961,439 km (0.08 R)
• M24: 3,089,346 km (0.116 R)
• M25: 3,907,796 km (0.04 R)
• M26: 4,009,971 km (0.092 R)
• M27: 4,203,700 km (0.113 R)
• M28: 4,347,763 km (0.075 R)
• M29: 4,413,885 km (0.102 R)
• M30: 4,520,249 km (0.116 R)
• M31: 4,654,439 km (0.073 R)
• M32: 4,721,907 km (0.078 R)
• M33: 4,899,181 km (0.085 R)
• M34: 5,204,211 km (0.088 R)
• M35: 5,444,166 km (0.064 R)
• M36: 5,544,097 km (0.109 R)
• M37: 5,745,755 km (0.1 R)
• M38: 5,905,825 km (0.109 R)
• M39: 5,993,788 km (0.117 R)
• M40: 6,275,182 km (0.079 R)
• M41: 6,530,695 km (0.081 R)
• M42: 6,804,908 km (0.044 R)
• M43: 6,881,652 km (0.115 R)
• M44: 7,067,303 km (0.091 R)
• M45: 7,207,625 km (0.065 R)
• M46: 7,270,307 km (0.118 R)
• M47: 7,586,407 km (0.071 R)
• M48: 7,987,778 km (0.079 R)
• M49: 8,297,595 km (0.077 R)
• M50: 8,478,609 km (0.061 R)
• M51: 8,594,547 km (0.116 R)
• M52: 8,878,334 km (0.119 R)
• M53: 8,979,313 km (0.106 R)
• M54: 9,438,130 km (0.091 R)
• M55: 9,592,664 km (0.081 R)
• M56: 9,748,246 km (0.079 R)
• M57: 10,644,936 km (0.092 R)
• M58: 10,716,443 km (0.085 R)
• M59: 10,805,903 km (0.102 R)
• M60: 11,094,178 km (0.07 R)
• M61: 11,366,596 km (0.089 R)
• M62: 11,476,251 km (0.082 R)
• M63: 11,862,812 km (0.112 R)
• M64: 11,955,413 km (0.088 R)
• M65: 12,178,763 km (0.077 R)
• M66: 12,309,661 km (0.118 R)
• M67: 12,403,459 km (0.093 R)
• M68: 12,705,198 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.8

Radius: 10.3

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.14 AU - 2.3 AU

Year: 2103 Days

Day: 5.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 47,413,228 km

• M1: 137,331 km (0.093 R)
• M2: 224,846 km (0.052 R)
• M3: 401,820 km (0.052 R)
• M4: 484,996 km (0.081 R)
• M5: 563,535 km (0.11 R)
• M6: 635,043 km (0.074 R)
• M7: 731,234 km (0.06 R)
• M8: 906,862 km (0.082 R)
• M9: 978,370 km (0.102 R)
• M10: 1,066,782 km (0.078 R)
• M11: 1,132,456 km (0.081 R)
• M12: 1,262,756 km (0.102 R)
• M13: 1,521,710 km (0.116 R)
• M14: 1,822,102 km (0.054 R)
• M15: 1,889,421 km (0.111 R)
• M16: 2,173,657 km (0.09 R)
• M17: 2,284,659 km (0.091 R)
• M18: 2,377,559 km (0.088 R)
• M19: 2,532,991 km (0.099 R)
• M20: 2,615,420 km (0.105 R)
• M21: 2,747,814 km (0.064 R)
• M22: 2,832,636 km (0.084 R)
• M23: 2,911,175 km (0.119 R)
• M24: 2,990,461 km (0.093 R)
• M25: 3,085,157 km (0.111 R)
• M26: 3,262,430 km (0.119 R)
• M27: 3,329,899 km (0.099 R)
• M28: 3,412,926 km (0.106 R)
• M29: 3,550,257 km (0.106 R)
• M30: 3,705,090 km (0.111 R)
• M31: 3,997,554 km (0.044 R)
• M32: 4,110,201 km (0.085 R)
• M33: 4,207,590 km (0.115 R)
• M34: 4,289,270 km (0.093 R)
• M35: 4,388,154 km (0.11 R)
• M36: 4,638,432 km (0.098 R)
• M37: 4,731,481 km (0.076 R)
• M38: 4,850,711 km (0.102 R)
• M39: 5,074,958 km (0.056 R)
• M40: 5,214,683 km (0.053 R)
• M41: 5,337,951 km (0.12 R)
• M42: 5,408,711 km (0.071 R)
• M43: 5,596,307 km (0.087 R)
• M44: 5,704,466 km (0.088 R)
• M45: 5,786,146 km (0.085 R)
• M46: 5,859,001 km (0.029 R)
• M47: 6,097,759 km (0.095 R)
• M48: 6,171,959 km (0.092 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 543.1

Radius: 5

Gravity: 21.72 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.41 AU - 7.75 AU

Year: 10732 Days

Day: 16.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 47,413,228 km

• M1: 95,443 km (0.061 R)
• M2: 139,126 km (0.114 R)
• M3: 174,282 km (0.109 R)
• M4: 213,775 km (0.047 R)
• M5: 268,229 km (0.089 R)
• M6: 379,380 km (0.073 R)
• M7: 419,921 km (0.116 R)
• M8: 581,337 km (0.104 R)
• M9: 779,106 km (0.113 R)
• M10: 849,566 km (0.12 R)
• M11: 1,172,698 km (0.082 R)
• M12: 1,253,929 km (0.105 R)
• M13: 1,465,162 km (0.116 R)
• M14: 1,619,696 km (0.115 R)
• M15: 2,679,597 km (0.096 R)
• M16: 2,951,117 km (0.089 R)
• M17: 3,608,749 km (0.049 R)
• M18: 5,251,783 km (0.107 R)
• M19: 5,352,761 km (0.05 R)
• M20: 5,386,571 km (0.029 R)
• M21: 6,218,933 km (0.102 R)
• M22: 7,846,259 km (0.091 R)
• M23: 8,039,090 km (0.085 R)
• M24: 8,077,836 km (0.058 R)
• M25: 8,390,047 km (0.083 R)
• M26: 8,429,391 km (0.069 R)
• M27: 8,906,010 km (0.087 R)
• M28: 9,309,775 km (0.106 R)
• M29: 9,432,146 km (0.073 R)
• M30: 10,345,142 km (0.12 R)
• M31: 10,387,328 km (0.092 R)
• M32: 10,429,515 km (0.108 R)
• M33: 11,416,562 km (0.054 R)
• M34: 11,899,015 km (0.115 R)
• M35: 12,793,311 km (0.12 R)
• M36: 12,883,817 km (0.096 R)
• M37: 13,478,020 km (0.084 R)
• M38: 13,708,999 km (0.059 R)
• M39: 13,801,750 km (0.032 R)
• M40: 14,174,697 km (0.098 R)
• M41: 14,456,689 km (0.106 R)
• M42: 15,457,948 km (0.107 R)
• M43: 15,506,118 km (0.092 R)
• M44: 15,845,257 km (0.114 R)
• M45: 16,235,707 km (0.083 R)
• M46: 16,579,932 km (0.092 R)
• M47: 17,225,746 km (0.091 R)
• M48: 17,476,322 km (0.114 R)
• M49: 18,953,153 km (0.083 R)
• M50: 19,211,807 km (0.106 R)
• M51: 19,523,869 km (0.103 R)
• M52: 19,628,138 km (0.068 R)
• M53: 19,942,294 km (0.082 R)
• M54: 19,994,803 km (0.105 R)
• M55: 20,310,903 km (0.076 R)
• M56: 20,628,649 km (0.066 R)
• M57: 21,055,003 km (0.104 R)
• M58: 22,187,608 km (0.029 R)
• M59: 22,898,647 km (0.099 R)
• M60: 23,229,408 km (0.094 R)
• M61: 24,118,917 km (0.08 R)
• M62: 24,455,362 km (0.108 R)
• M63: 25,076,193 km (0.112 R)
• M64: 27,611,129 km (0.104 R)
• M65: 28,316,483 km (0.087 R)
• M66: 29,087,212 km (0.084 R)
• M67: 29,146,752 km (0.068 R)
• M68: 29,206,441 km (0.104 R)
• M69: 29,385,510 km (0.117 R)
• M70: 29,565,027 km (0.108 R)
• M71: 30,710,049 km (0.076 R)
• M72: 31,440,685 km (0.081 R)
• M73: 33,043,327 km (0.087 R)
• M74: 34,105,622 km (0.111 R)
• M75: 34,357,096 km (0.078 R)
• M76: 35,242,416 km (0.047 R)
• M77: 35,305,845 km (0.067 R)
• M78: 35,496,732 km (0.037 R)
• M79: 36,327,449 km (0.043 R)
• M80: 36,519,982 km (0.098 R)
• M81: 36,777,440 km (0.086 R)
• M82: 37,099,973 km (0.106 R)
• M83: 37,423,403 km (0.098 R)
• M84: 37,682,806 km (0.09 R)
• M85: 38,726,550 km (0.079 R)
• M86: 39,120,442 km (0.112 R)
• M87: 39,449,706 km (0.087 R)
• M88: 40,110,929 km (0.077 R)
• M89: 41,109,644 km (0.035 R)
• M90: 41,847,162 km (0.12 R)
• M91: 42,453,931 km (0.106 R)
• M92: 45,669,238 km (0.096 R)
• M93: 46,015,856 km (0.085 R)
• M94: 46,363,372 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 414.7

Radius: 6.2

Gravity: 10.79 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 7.3 AU - 7.38 AU

Year: 12644 Days

Day: 19.3 Hours

Environment

Temp: -232 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 47,413,228 km

• M1: 81,381 km (0.115 R)
• M2: 155,582 km (0.099 R)
• M3: 427,700 km (0.108 R)
• M4: 574,905 km (0.101 R)
• M5: 1,029,981 km (0.03 R)
• M6: 1,168,359 km (0.108 R)
• M7: 1,733,839 km (0.072 R)
• M8: 2,044,853 km (0.074 R)
• M9: 2,717,894 km (0.104 R)
• M10: 2,993,753 km (0.099 R)
• M11: 3,078,275 km (0.067 R)
• M12: 3,662,006 km (0.081 R)
• M13: 4,216,117 km (0.096 R)
• M14: 5,332,566 km (0.069 R)
• M15: 5,435,339 km (0.115 R)
• M16: 5,747,401 km (0.114 R)
• M17: 5,994,087 km (0.032 R)
• M18: 6,172,558 km (0.029 R)
• M19: 6,280,418 km (0.08 R)
• M20: 7,090,490 km (0.081 R)
• M21: 7,241,285 km (0.091 R)
• M22: 7,469,571 km (0.115 R)
• M23: 7,894,130 km (0.1 R)
• M24: 8,928,599 km (0.106 R)
• M25: 9,009,831 km (0.084 R)
• M26: 9,132,352 km (0.078 R)
• M27: 9,420,178 km (0.027 R)
• M28: 9,836,658 km (0.07 R)
• M29: 10,004,956 km (0.117 R)
• M30: 10,644,487 km (0.061 R)
• M31: 11,384,996 km (0.104 R)
• M32: 12,413,332 km (0.109 R)
• M33: 13,517,664 km (0.041 R)
• M34: 13,657,986 km (0.052 R)
• M35: 15,671,574 km (0.1 R)
• M36: 15,917,363 km (0.029 R)
• M37: 16,114,982 km (0.095 R)
• M38: 16,214,016 km (0.119 R)
• M39: 16,512,613 km (0.118 R)
• M40: 16,813,005 km (0.066 R)
• M41: 17,115,044 km (0.057 R)
• M42: 17,216,172 km (0.069 R)
• M43: 17,520,753 km (0.033 R)
• M44: 17,878,292 km (0.083 R)
• M45: 18,913,060 km (0.098 R)
• M46: 19,069,989 km (0.058 R)
• M47: 19,754,848 km (0.108 R)
• M48: 19,807,805 km (0.095 R)
• M49: 20,501,341 km (0.107 R)
• M50: 21,912,199 km (0.119 R)
• M51: 22,187,010 km (0.096 R)
• M52: 22,851,374 km (0.058 R)
• M53: 23,074,275 km (0.07 R)
• M54: 23,241,974 km (0.108 R)
• M55: 23,466,221 km (0.084 R)
• M56: 23,747,465 km (0.098 R)
• M57: 23,916,660 km (0.072 R)
• M58: 24,483,786 km (0.089 R)
• M59: 25,400,372 km (0.039 R)
• M60: 26,328,328 km (0.06 R)
• M61: 26,562,000 km (0.116 R)
• M62: 26,737,627 km (0.075 R)
• M63: 27,740,681 km (0.046 R)
• M64: 27,859,462 km (0.042 R)
• M65: 28,516,047 km (0.095 R)
• M66: 28,575,886 km (0.047 R)
• M67: 29,298,444 km (0.059 R)
• M68: 29,540,643 km (0.057 R)
• M69: 29,661,967 km (0.085 R)
• M70: 30,209,944 km (0.068 R)
• M71: 30,271,129 km (0.106 R)
• M72: 31,130,719 km (0.069 R)
• M73: 31,439,788 km (0.08 R)
• M74: 31,563,655 km (0.11 R)
• M75: 31,811,838 km (0.078 R)
• M76: 31,874,070 km (0.102 R)
• M77: 35,806,400 km (0.112 R)
• M78: 35,871,026 km (0.056 R)
• M79: 36,715,357 km (0.084 R)
• M80: 37,303,575 km (0.107 R)
• M81: 37,369,099 km (0.069 R)
• M82: 37,566,120 km (0.085 R)
• M83: 37,631,793 km (0.115 R)
• M84: 38,026,881 km (0.109 R)
• M85: 40,157,005 km (0.092 R)
• M86: 40,291,494 km (0.033 R)
• M87: 40,493,451 km (0.098 R)
• M88: 40,763,176 km (0.101 R)
• M89: 41,643,858 km (0.093 R)
• M90: 44,462,582 km (0.118 R)
• M91: 44,671,271 km (0.109 R)
• M92: 45,509,168 km (0.087 R)
• M93: 45,579,180 km (0.118 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 176 - 16,724 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit