🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.12

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.86 AU - 0.92 AU

Year: 316 Days

Day: 17.1 Hours

Environment

Temp: 26 °C

Axial Tilt: 20.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 100,247,426 km

• M1: 712,086 km (0.036 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.31

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.74 AU - 1.2 AU

Year: 360 Days

Day: 18.3 Hours

Environment

Temp: 5 °C

Axial Tilt: 18.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.73 AU - 4.03 AU

Year: 2341 Days

Day: 14.8 Hours

Environment

Temp: -114 °C

Axial Tilt: 0.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 100,247,426 km

• M1: 1,545,047 km (0.088 R)

Asteroid Belt

Center: 4.02 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.6

Radius: 14.3

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 4.44 AU - 4.88 AU

Year: 3790 Days

Day: 11 Hours

Environment

Temp: -142 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 100,247,426 km

• M1: 238,908 km (0.086 R)
• M2: 372,499 km (0.096 R)
• M3: 636,090 km (0.08 R)
• M4: 826,528 km (0.104 R)
• M5: 977,323 km (0.078 R)
• M6: 1,138,141 km (0.045 R)
• M7: 1,228,797 km (0.108 R)
• M8: 1,487,900 km (0.102 R)
• M9: 1,588,131 km (0.05 R)
• M10: 1,780,663 km (0.116 R)
• M11: 1,918,593 km (0.113 R)
• M12: 2,238,583 km (0.086 R)
• M13: 2,421,990 km (0.073 R)
• M14: 2,541,518 km (0.07 R)
• M15: 2,733,303 km (0.113 R)
• M16: 2,948,125 km (0.113 R)
• M17: 3,243,581 km (0.108 R)
• M18: 3,665,597 km (0.106 R)
• M19: 3,863,365 km (0.074 R)
• M20: 4,166,749 km (0.109 R)
• M21: 4,436,175 km (0.111 R)
• M22: 4,626,015 km (0.119 R)
• M23: 5,278,411 km (0.091 R)
• M24: 5,798,413 km (0.084 R)
• M25: 5,913,753 km (0.112 R)
• M26: 6,006,504 km (0.114 R)
• M27: 6,264,112 km (0.088 R)
• M28: 6,406,230 km (0.066 R)
• M29: 7,108,143 km (0.113 R)
• M30: 7,331,044 km (0.092 R)
• M31: 7,885,603 km (0.037 R)
• M32: 8,690,290 km (0.047 R)
• M33: 8,928,749 km (0.108 R)
• M34: 9,358,244 km (0.045 R)
• M35: 9,959,777 km (0.079 R)
• M36: 10,321,206 km (0.1 R)
• M37: 10,545,752 km (0.102 R)
• M38: 10,658,699 km (0.105 R)
• M39: 10,828,791 km (0.028 R)
• M40: 11,576,332 km (0.113 R)
• M41: 12,044,723 km (0.034 R)
• M42: 12,549,317 km (0.078 R)
• M43: 13,212,484 km (0.038 R)
• M44: 13,825,386 km (0.045 R)
• M45: 13,949,104 km (0.043 R)
• M46: 14,353,616 km (0.119 R)
• M47: 14,920,144 km (0.082 R)
• M48: 15,078,867 km (0.082 R)
• M49: 15,686,982 km (0.098 R)
• M50: 16,205,489 km (0.092 R)
• M51: 16,696,469 km (0.104 R)
• M52: 18,539,066 km (0.083 R)
• M53: 18,641,391 km (0.057 R)
• M54: 18,812,381 km (0.066 R)
• M55: 19,467,021 km (0.111 R)
• M56: 19,710,118 km (0.119 R)
• M57: 19,884,250 km (0.113 R)
• M58: 20,024,124 km (0.095 R)
• M59: 20,410,086 km (0.097 R)
• M60: 20,586,313 km (0.116 R)
• M61: 20,763,137 km (0.103 R)
• M62: 20,904,956 km (0.083 R)
• M63: 21,332,357 km (0.104 R)
• M64: 21,511,276 km (0.073 R)
• M65: 21,870,610 km (0.105 R)
• M66: 22,668,117 km (0.112 R)
• M67: 23,143,987 km (0.11 R)
• M68: 23,660,100 km (0.107 R)
• M69: 23,771,102 km (0.107 R)
• M70: 23,956,603 km (0.088 R)
• M71: 25,458,266 km (0.056 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.7

Radius: 11.6

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 6.86 AU - 9.74 AU

Year: 9008 Days

Day: 12.3 Hours

Environment

Temp: -171 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 100,247,426 km

• M1: 150,047 km (0.073 R)
• M2: 326,273 km (0.118 R)
• M3: 646,412 km (0.084 R)
• M4: 821,143 km (0.049 R)
• M5: 1,105,977 km (0.098 R)
• M6: 1,252,134 km (0.066 R)
• M7: 1,457,382 km (0.104 R)
• M8: 2,199,986 km (0.097 R)
• M9: 2,449,815 km (0.072 R)
• M10: 2,775,340 km (0.075 R)
• M11: 3,091,739 km (0.045 R)
• M12: 3,372,385 km (0.082 R)
• M13: 3,467,679 km (0.057 R)
• M14: 4,315,151 km (0.106 R)
• M15: 4,682,264 km (0.088 R)
• M16: 5,786,296 km (0.091 R)
• M17: 6,016,527 km (0.1 R)
• M18: 6,456,495 km (0.099 R)
• M19: 6,876,565 km (0.109 R)
• M20: 6,967,820 km (0.075 R)
• M21: 7,523,427 km (0.088 R)
• M22: 7,711,770 km (0.079 R)
• M23: 7,997,353 km (0.079 R)
• M24: 8,383,465 km (0.101 R)
• M25: 8,808,771 km (0.065 R)
• M26: 9,107,369 km (0.096 R)
• M27: 9,341,938 km (0.096 R)
• M28: 9,612,411 km (0.065 R)
• M29: 10,126,579 km (0.065 R)
• M30: 10,755,489 km (0.09 R)
• M31: 11,505,123 km (0.117 R)
• M32: 11,831,696 km (0.06 R)
• M33: 12,456,715 km (0.101 R)
• M34: 12,866,913 km (0.118 R)
• M35: 13,854,109 km (0.083 R)
• M36: 14,278,967 km (0.08 R)
• M37: 14,356,758 km (0.066 R)
• M38: 15,300,571 km (0.041 R)
• M39: 15,981,241 km (0.103 R)
• M40: 16,183,348 km (0.093 R)
• M41: 16,264,430 km (0.092 R)
• M42: 18,208,305 km (0.026 R)
• M43: 18,504,209 km (0.085 R)
• M44: 18,716,339 km (0.067 R)
• M45: 19,876,471 km (0.032 R)
• M46: 20,268,417 km (0.053 R)
• M47: 20,971,378 km (0.109 R)
• M48: 21,148,352 km (0.097 R)
• M49: 21,548,376 km (0.072 R)
• M50: 22,130,761 km (0.108 R)
• M51: 22,627,576 km (0.113 R)
• M52: 22,899,993 km (0.118 R)
• M53: 23,448,419 km (0.104 R)
• M54: 23,586,049 km (0.081 R)
• M55: 23,816,280 km (0.103 R)
• M56: 23,954,808 km (0.111 R)
• M57: 24,047,259 km (0.091 R)
• M58: 24,186,236 km (0.091 R)
• M59: 24,978,506 km (0.076 R)
• M60: 25,401,419 km (0.08 R)
• M61: 26,972,197 km (0.086 R)
• M62: 27,213,049 km (0.075 R)
• M63: 28,427,485 km (0.066 R)
• M64: 28,721,594 km (0.06 R)
• M65: 29,609,907 km (0.099 R)
• M66: 29,758,906 km (0.096 R)
• M67: 30,909,014 km (0.095 R)
• M68: 31,060,108 km (0.06 R)
• M69: 31,261,916 km (0.118 R)
• M70: 32,379,861 km (0.114 R)
• M71: 32,789,609 km (0.037 R)
• M72: 32,943,845 km (0.09 R)
• M73: 33,355,987 km (0.099 R)
• M74: 33,769,775 km (0.111 R)
• M75: 34,445,957 km (0.062 R)
• M76: 34,602,586 km (0.114 R)
• M77: 34,759,514 km (0.113 R)
• M78: 35,126,478 km (0.049 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 954.1

Radius: 13.3

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 7.2 AU - 11.4 AU

Year: 10684 Days

Day: 13.1 Hours

Environment

Temp: -181 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 100,247,426 km

• M1: 198,068 km (0.043 R)
• M2: 335,099 km (0.104 R)
• M3: 484,697 km (0.076 R)
• M4: 594,951 km (0.106 R)
• M5: 826,827 km (0.1 R)
• M6: 1,026,541 km (0.056 R)
• M7: 1,311,076 km (0.109 R)
• M8: 1,646,474 km (0.1 R)
• M9: 1,955,843 km (0.111 R)
• M10: 2,172,759 km (0.114 R)
• M11: 4,075,196 km (0.07 R)
• M12: 4,712,333 km (0.116 R)
• M13: 5,342,888 km (0.105 R)
• M14: 5,533,326 km (0.106 R)
• M15: 5,648,816 km (0.103 R)
• M16: 5,882,188 km (0.092 R)
• M17: 6,079,059 km (0.052 R)
• M18: 6,278,174 km (0.088 R)
• M19: 6,764,816 km (0.032 R)
• M20: 7,221,837 km (0.065 R)
• M21: 7,817,985 km (0.061 R)
• M22: 8,034,752 km (0.067 R)
• M23: 8,697,022 km (0.067 R)
• M24: 8,966,896 km (0.034 R)
• M25: 9,331,018 km (0.071 R)
• M26: 9,793,125 km (0.119 R)
• M27: 9,886,474 km (0.12 R)
• M28: 10,074,070 km (0.112 R)
• M29: 12,063,722 km (0.104 R)
• M30: 12,364,862 km (0.118 R)
• M31: 12,923,610 km (0.112 R)
• M32: 13,180,320 km (0.093 R)
• M33: 13,594,557 km (0.075 R)
• M34: 14,276,873 km (0.026 R)
• M35: 14,862,997 km (0.083 R)
• M36: 14,970,409 km (0.057 R)
• M37: 15,893,876 km (0.096 R)
• M38: 16,058,733 km (0.071 R)
• M39: 17,341,684 km (0.042 R)
• M40: 18,081,446 km (0.098 R)
• M41: 18,599,653 km (0.078 R)
• M42: 19,005,961 km (0.061 R)
• M43: 19,181,140 km (0.078 R)
• M44: 19,709,519 km (0.084 R)
• M45: 20,242,836 km (0.073 R)
• M46: 20,660,962 km (0.076 R)
• M47: 21,142,218 km (0.105 R)
• M48: 22,670,061 km (0.104 R)
• M49: 22,979,879 km (0.111 R)
• M50: 24,359,769 km (0.104 R)
• M51: 25,831,064 km (0.106 R)
• M52: 28,591,295 km (0.099 R)
• M53: 29,060,434 km (0.118 R)
• M54: 29,262,241 km (0.09 R)
• M55: 29,938,274 km (0.11 R)
• M56: 30,482,960 km (0.118 R)
• M57: 31,030,787 km (0.12 R)
• M58: 33,818,843 km (0.051 R)
• M59: 33,960,362 km (0.105 R)
• M60: 34,244,000 km (0.114 R)
• M61: 34,457,177 km (0.077 R)
• M62: 36,034,238 km (0.092 R)
• M63: 36,251,154 km (0.085 R)
• M64: 36,904,299 km (0.1 R)
• M65: 37,488,179 km (0.1 R)
• M66: 37,707,938 km (0.109 R)
• M67: 38,591,314 km (0.066 R)
• M68: 40,453,508 km (0.111 R)
• M69: 42,040,143 km (0.115 R)
• M70: 43,493,337 km (0.1 R)
• M71: 44,729,763 km (0.103 R)
• M72: 46,369,954 km (0.099 R)
• M73: 46,763,546 km (0.102 R)
• M74: 47,237,024 km (0.093 R)
• M75: 48,587,593 km (0.095 R)
• M76: 49,147,388 km (0.103 R)
• M77: 51,164,117 km (0.107 R)
• M78: 52,305,250 km (0.08 R)
• M79: 55,444,711 km (0.09 R)
• M80: 55,611,512 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.1

Radius: 14.3

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 9.48 AU - 9.82 AU

Year: 11293 Days

Day: 11.7 Hours

Environment

Temp: -179 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 100,247,426 km

• M1: 195,973 km (0.115 R)
• M2: 404,812 km (0.073 R)
• M3: 855,849 km (0.106 R)
• M4: 1,025,793 km (0.12 R)
• M5: 1,145,770 km (0.051 R)
• M6: 1,271,133 km (0.08 R)
• M7: 1,490,743 km (0.101 R)
• M8: 1,675,945 km (0.067 R)
• M9: 1,893,909 km (0.111 R)
• M10: 2,800,771 km (0.09 R)
• M11: 3,330,348 km (0.117 R)
• M12: 3,923,503 km (0.095 R)
• M13: 4,282,239 km (0.108 R)
• M14: 4,381,871 km (0.086 R)
• M15: 4,823,035 km (0.092 R)
• M16: 5,136,892 km (0.06 R)
• M17: 5,932,453 km (0.066 R)
• M18: 6,382,593 km (0.116 R)
• M19: 6,727,715 km (0.114 R)
• M20: 6,922,043 km (0.083 R)
• M21: 7,476,154 km (0.106 R)
• M22: 9,094,653 km (0.054 R)
• M23: 9,657,739 km (0.067 R)
• M24: 9,789,236 km (0.093 R)
• M25: 10,276,775 km (0.074 R)
• M26: 10,954,454 km (0.079 R)
• M27: 11,414,318 km (0.111 R)
• M28: 11,599,968 km (0.039 R)
• M29: 11,693,318 km (0.068 R)
• M30: 12,305,472 km (0.099 R)
• M31: 12,448,188 km (0.109 R)
• M32: 13,610,265 km (0.066 R)
• M33: 14,104,686 km (0.05 R)
• M34: 14,204,318 km (0.112 R)
• M35: 14,604,941 km (0.104 R)
• M36: 15,571,642 km (0.082 R)
• M37: 15,726,177 km (0.109 R)
• M38: 15,984,981 km (0.105 R)
• M39: 16,611,647 km (0.092 R)
• M40: 16,769,473 km (0.091 R)
• M41: 16,927,897 km (0.104 R)
• M42: 17,193,134 km (0.059 R)
• M43: 17,299,647 km (0.105 R)
• M44: 17,889,063 km (0.09 R)
• M45: 18,758,227 km (0.064 R)
• M46: 20,990,975 km (0.101 R)
• M47: 21,447,548 km (0.084 R)
• M48: 21,619,585 km (0.084 R)
• M49: 22,312,373 km (0.067 R)
• M50: 22,836,863 km (0.08 R)
• M51: 23,188,867 km (0.089 R)
• M52: 23,660,848 km (0.077 R)
• M53: 24,434,568 km (0.065 R)
• M54: 26,129,362 km (0.117 R)
• M55: 28,805,220 km (0.119 R)
• M56: 29,439,963 km (0.112 R)
• M57: 29,887,111 km (0.083 R)
• M58: 31,241,720 km (0.089 R)
• M59: 31,567,245 km (0.088 R)
• M60: 32,024,865 km (0.082 R)
• M61: 32,484,729 km (0.109 R)
• M62: 32,616,525 km (0.06 R)
• M63: 32,946,687 km (0.114 R)
• M64: 33,079,081 km (0.032 R)
• M65: 33,877,186 km (0.07 R)
• M66: 34,681,723 km (0.086 R)
• M67: 35,018,767 km (0.117 R)
• M68: 35,560,311 km (0.109 R)
• M69: 36,309,498 km (0.06 R)
• M70: 36,583,262 km (0.099 R)
• M71: 37,063,920 km (0.074 R)
• M72: 37,754,164 km (0.092 R)
• M73: 38,309,472 km (0.067 R)
• M74: 38,657,885 km (0.053 R)
• M75: 39,287,842 km (0.116 R)
• M76: 42,487,740 km (0.071 R)
• M77: 44,301,315 km (0.1 R)
• M78: 45,033,896 km (0.063 R)
• M79: 45,696,614 km (0.082 R)
• M80: 46,288,424 km (0.113 R)
• M81: 47,180,775 km (0.105 R)
• M82: 48,530,148 km (0.059 R)
• M83: 49,058,378 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 675.2

Radius: 4.4

Gravity: 34.88 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 17.02 AU - 20.38 AU

Year: 30464 Days

Day: 21.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 100,247,426 km

• M1: 71,209 km (0.069 R)
• M2: 710,739 km (0.071 R)
• M3: 979,417 km (0.095 R)
• M4: 1,527,245 km (0.104 R)
• M5: 1,831,377 km (0.026 R)
• M6: 1,990,400 km (0.091 R)
• M7: 2,759,931 km (0.069 R)
• M8: 3,081,567 km (0.098 R)
• M9: 3,415,020 km (0.1 R)
• M10: 3,561,477 km (0.063 R)
• M11: 4,013,112 km (0.077 R)
• M12: 4,805,233 km (0.088 R)
• M13: 4,969,342 km (0.086 R)
• M14: 5,191,046 km (0.111 R)
• M15: 5,992,143 km (0.107 R)
• M16: 6,050,935 km (0.083 R)
• M17: 6,287,599 km (0.098 R)
• M18: 7,139,558 km (0.086 R)
• M19: 8,418,171 km (0.06 R)
• M20: 8,615,940 km (0.102 R)
• M21: 9,834,714 km (0.102 R)
• M22: 10,534,832 km (0.046 R)
• M23: 10,819,367 km (0.051 R)
• M24: 11,250,807 km (0.096 R)
• M25: 11,834,987 km (0.057 R)
• M26: 11,908,589 km (0.036 R)
• M27: 11,982,490 km (0.106 R)
• M28: 12,056,541 km (0.093 R)
• M29: 13,491,334 km (0.074 R)
• M30: 14,582,501 km (0.1 R)
• M31: 14,979,085 km (0.115 R)
• M32: 17,683,815 km (0.102 R)
• M33: 20,093,687 km (0.112 R)
• M34: 22,421,729 km (0.099 R)
• M35: 23,432,113 km (0.071 R)
• M36: 23,803,116 km (0.063 R)
• M37: 24,645,052 km (0.104 R)
• M38: 24,833,546 km (0.11 R)
• M39: 25,306,724 km (0.119 R)
• M40: 28,503,331 km (0.075 R)
• M41: 29,596,892 km (0.116 R)
• M42: 29,797,053 km (0.102 R)
• M43: 31,008,198 km (0.111 R)
• M44: 31,313,527 km (0.077 R)
• M45: 32,544,718 km (0.089 R)
• M46: 34,105,622 km (0.106 R)
• M47: 34,526,141 km (0.086 R)
• M48: 34,948,157 km (0.032 R)
• M49: 38,276,859 km (0.083 R)
• M50: 39,261,961 km (0.114 R)
• M51: 39,812,930 km (0.082 R)
• M52: 40,034,036 km (0.069 R)
• M53: 41,369,047 km (0.089 R)
• M54: 41,817,242 km (0.107 R)
• M55: 45,114,978 km (0.088 R)
• M56: 45,576,338 km (0.119 R)
• M57: 47,437,335 km (0.072 R)
• M58: 48,141,642 km (0.106 R)
• M59: 48,494,992 km (0.079 R)
• M60: 50,633,643 km (0.099 R)
• M61: 55,618,544 km (0.057 R)
• M62: 56,733,496 km (0.06 R)
• M63: 61,649,432 km (0.097 R)
• M64: 62,546,122 km (0.091 R)
• M65: 63,576,253 km (0.113 R)
• M66: 63,834,608 km (0.104 R)
• M67: 64,222,815 km (0.099 R)
• M68: 65,001,621 km (0.078 R)
• M69: 66,175,815 km (0.118 R)
• M70: 68,677,390 km (0.094 R)
• M71: 70,406,742 km (0.061 R)
• M72: 72,285,093 km (0.104 R)
• M73: 73,772,544 km (0.116 R)
• M74: 74,724,286 km (0.099 R)
• M75: 75,953,981 km (0.109 R)
• M76: 78,433,416 km (0.095 R)
• M77: 79,126,802 km (0.082 R)
• M78: 82,201,786 km (0.088 R)
• M79: 82,765,172 km (0.101 R)
• M80: 83,612,494 km (0.03 R)
• M81: 84,037,202 km (0.109 R)
• M82: 86,457,696 km (0.07 R)
• M83: 86,887,191 km (0.107 R)
• M84: 87,460,899 km (0.06 R)
• M85: 87,604,513 km (0.089 R)
• M86: 88,035,953 km (0.109 R)
• M87: 89,334,463 km (0.107 R)
• M88: 90,058,517 km (0.087 R)
• M89: 90,493,846 km (0.102 R)
• M90: 91,075,483 km (0.107 R)
• M91: 94,443,679 km (0.107 R)
• M92: 95,624,754 km (0.053 R)
• M93: 97,554,417 km (0.109 R)
• M94: 98,598,760 km (0.095 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 449 - 15,916 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit