G8V Star System Generated (Seed: 1766187127)

Star Details

Spectral Class: G5V

Temperature: 5,560 K

Mass: 0.99 sol

Luminosity: 0.97 lux

Habitable Zone (HZ)

Inner Boundary: 0.94 AU

Outer Boundary: 1.35 AU

Physical Limits

Snow Line: 4.73 AU

Max System Radius: 19.9 AU

Planetary System (6 Planets)

Planet 1 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.55

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.79 AU - 0.93 AU

Year: 293 Days

Day: 44.3 Hours

Environment

Temp: 101 °C

Axial Tilt: 29.4 °

Atmosphere: Dense COâ‚‚

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 108,009,810 km

  • M1: 184,604 km (0.101 R)
  • M2: 405,410 km (0.117 R)

Asteroid Belt

Center: 2.9 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 2 - Gas Giant

Semi-Major Axis: 4.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.2

Radius: 11.6

Gravity: 5.37 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 4.61 AU - 5.27 AU

Year: 4031 Days

Day: 13.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 16.9 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (72)

Outer Limit: 108,009,810 km

  • M1: 156,629 km (0.029 R)
  • M2: 242,797 km (0.089 R)
  • M3: 325,226 km (0.111 R)
  • M4: 449,392 km (0.058 R)
  • M5: 543,339 km (0.119 R)
  • M6: 710,141 km (0.058 R)
  • M7: 994,527 km (0.11 R)
  • M8: 1,084,435 km (0.054 R)
  • M9: 1,776,325 km (0.118 R)
  • M10: 1,951,953 km (0.096 R)
  • M11: 2,217,788 km (0.09 R)
  • M12: 2,355,269 km (0.096 R)
  • M13: 2,531,196 km (0.115 R)
  • M14: 2,620,805 km (0.047 R)
  • M15: 2,858,815 km (0.093 R)
  • M16: 3,258,541 km (0.108 R)
  • M17: 3,615,332 km (0.105 R)
  • M18: 3,839,729 km (0.074 R)
  • M19: 4,174,229 km (0.066 R)
  • M20: 4,259,351 km (0.098 R)
  • M21: 4,583,978 km (0.058 R)
  • M22: 5,326,133 km (0.026 R)
  • M23: 5,841,647 km (0.093 R)
  • M24: 6,033,282 km (0.103 R)
  • M25: 6,129,773 km (0.116 R)
  • M26: 6,820,017 km (0.091 R)
  • M27: 6,971,111 km (0.111 R)
  • M28: 7,199,996 km (0.112 R)
  • M29: 7,405,394 km (0.045 R)
  • M30: 8,086,812 km (0.07 R)
  • M31: 8,273,660 km (0.094 R)
  • M32: 8,543,086 km (0.054 R)
  • M33: 8,706,147 km (0.099 R)
  • M34: 10,277,673 km (0.119 R)
  • M35: 10,364,290 km (0.088 R)
  • M36: 10,830,587 km (0.039 R)
  • M37: 11,965,436 km (0.092 R)
  • M38: 12,639,674 km (0.096 R)
  • M39: 12,825,624 km (0.083 R)
  • M40: 13,043,887 km (0.098 R)
  • M41: 13,263,198 km (0.086 R)
  • M42: 13,960,922 km (0.081 R)
  • M43: 14,121,141 km (0.065 R)
  • M44: 14,833,377 km (0.118 R)
  • M45: 15,292,642 km (0.116 R)
  • M46: 15,391,676 km (0.119 R)
  • M47: 15,557,281 km (0.081 R)
  • M48: 15,690,124 km (0.09 R)
  • M49: 15,856,776 km (0.106 R)
  • M50: 16,057,536 km (0.114 R)
  • M51: 16,158,216 km (0.083 R)
  • M52: 16,461,450 km (0.067 R)
  • M53: 16,800,738 km (0.114 R)
  • M54: 16,902,914 km (0.096 R)
  • M55: 17,417,231 km (0.092 R)
  • M56: 18,110,767 km (0.059 R)
  • M57: 18,707,513 km (0.072 R)
  • M58: 18,813,578 km (0.109 R)
  • M59: 19,740,337 km (0.082 R)
  • M60: 19,884,250 km (0.103 R)
  • M61: 20,064,665 km (0.032 R)
  • M62: 20,390,639 km (0.048 R)
  • M63: 20,864,714 km (0.108 R)
  • M64: 21,786,686 km (0.103 R)
  • M65: 22,271,383 km (0.096 R)
  • M66: 22,609,025 km (0.054 R)
  • M67: 22,684,273 km (0.071 R)
  • M68: 23,746,568 km (0.073 R)
  • M69: 25,097,287 km (0.117 R)
  • M70: 25,448,692 km (0.079 R)
  • M71: 26,235,278 km (0.092 R)
  • M72: 26,591,919 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 729.8

Radius: 12.6

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 6.87 AU - 10.25 AU

Year: 9194 Days

Day: 8.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 13.4 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (82)

Outer Limit: 108,009,810 km

  • M1: 297,101 km (0.117 R)
  • M2: 688,001 km (0.072 R)
  • M3: 1,422,975 km (0.077 R)
  • M4: 2,170,964 km (0.102 R)
  • M5: 2,294,083 km (0.106 R)
  • M6: 2,419,446 km (0.095 R)
  • M7: 2,890,380 km (0.064 R)
  • M8: 3,248,518 km (0.087 R)
  • M9: 3,768,071 km (0.083 R)
  • M10: 3,917,071 km (0.101 R)
  • M11: 4,627,810 km (0.083 R)
  • M12: 4,819,894 km (0.109 R)
  • M13: 5,014,521 km (0.115 R)
  • M14: 5,211,990 km (0.03 R)
  • M15: 5,785,099 km (0.111 R)
  • M16: 5,888,471 km (0.082 R)
  • M17: 6,664,585 km (0.071 R)
  • M18: 8,703,604 km (0.117 R)
  • M19: 9,181,420 km (0.116 R)
  • M20: 9,342,537 km (0.039 R)
  • M21: 9,423,469 km (0.041 R)
  • M22: 10,707,767 km (0.086 R)
  • M23: 10,834,925 km (0.109 R)
  • M24: 10,962,682 km (0.102 R)
  • M25: 11,133,672 km (0.045 R)
  • M26: 11,305,709 km (0.109 R)
  • M27: 11,478,495 km (0.04 R)
  • M28: 12,311,606 km (0.045 R)
  • M29: 12,623,368 km (0.108 R)
  • M30: 12,802,735 km (0.086 R)
  • M31: 12,983,001 km (0.078 R)
  • M32: 13,437,330 km (0.063 R)
  • M33: 14,128,472 km (0.038 R)
  • M34: 15,068,096 km (0.096 R)
  • M35: 15,401,699 km (0.086 R)
  • M36: 15,882,656 km (0.108 R)
  • M37: 16,810,014 km (0.109 R)
  • M38: 17,056,850 km (0.064 R)
  • M39: 17,604,528 km (0.025 R)
  • M40: 18,259,019 km (0.114 R)
  • M41: 18,563,899 km (0.049 R)
  • M42: 19,333,281 km (0.056 R)
  • M43: 19,904,146 km (0.048 R)
  • M44: 20,533,205 km (0.109 R)
  • M45: 20,797,246 km (0.101 R)
  • M46: 21,222,104 km (0.103 R)
  • M47: 23,389,029 km (0.095 R)
  • M48: 23,499,282 km (0.113 R)
  • M49: 23,609,536 km (0.098 R)
  • M50: 25,455,424 km (0.074 R)
  • M51: 26,138,189 km (0.1 R)
  • M52: 26,367,074 km (0.079 R)
  • M53: 26,481,815 km (0.083 R)
  • M54: 27,057,767 km (0.116 R)
  • M55: 27,231,450 km (0.043 R)
  • M56: 27,929,623 km (0.082 R)
  • M57: 28,574,839 km (0.12 R)
  • M58: 28,928,787 km (0.092 R)
  • M59: 29,700,712 km (0.087 R)
  • M60: 31,083,146 km (0.096 R)
  • M61: 31,873,771 km (0.048 R)
  • M62: 32,179,699 km (0.07 R)
  • M63: 32,732,613 km (0.084 R)
  • M64: 32,856,031 km (0.036 R)
  • M65: 34,473,184 km (0.084 R)
  • M66: 34,724,209 km (0.099 R)
  • M67: 35,607,884 km (0.108 R)
  • M68: 35,925,181 km (0.106 R)
  • M69: 37,011,261 km (0.073 R)
  • M70: 39,019,613 km (0.074 R)
  • M71: 39,346,783 km (0.06 R)
  • M72: 39,609,178 km (0.041 R)
  • M73: 40,135,762 km (0.032 R)
  • M74: 41,529,266 km (0.103 R)
  • M75: 42,399,777 km (0.074 R)
  • M76: 42,668,753 km (0.117 R)
  • M77: 43,141,034 km (0.092 R)
  • M78: 43,547,192 km (0.111 R)
  • M79: 43,886,630 km (0.056 R)
  • M80: 44,295,032 km (0.085 R)
  • M81: 44,636,414 km (0.066 R)
  • M82: 46,079,735 km (0.066 R)

Asteroid Belt

Center: 9.21 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 9.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666.4

Radius: 9.7

Gravity: 7.08 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 7.68 AU - 12.02 AU

Year: 11348 Days

Day: 9.2 Hours

Environment

Temp: -171 °C

Axial Tilt: 21.8 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (86)

Outer Limit: 108,009,810 km

  • M1: 138,827 km (0.089 R)
  • M2: 300,393 km (0.073 R)
  • M3: 362,176 km (0.101 R)
  • M4: 443,857 km (0.105 R)
  • M5: 612,753 km (0.114 R)
  • M6: 749,635 km (0.097 R)
  • M7: 1,116,599 km (0.106 R)
  • M8: 1,309,131 km (0.059 R)
  • M9: 1,466,358 km (0.061 R)
  • M10: 1,849,628 km (0.106 R)
  • M11: 1,950,307 km (0.078 R)
  • M12: 2,792,244 km (0.106 R)
  • M13: 3,145,594 km (0.108 R)
  • M14: 3,702,248 km (0.089 R)
  • M15: 3,992,169 km (0.079 R)
  • M16: 4,090,455 km (0.106 R)
  • M17: 4,156,427 km (0.112 R)
  • M18: 4,222,699 km (0.119 R)
  • M19: 5,011,080 km (0.045 R)
  • M20: 5,081,690 km (0.113 R)
  • M21: 5,549,483 km (0.117 R)
  • M22: 5,844,190 km (0.053 R)
  • M23: 6,031,038 km (0.052 R)
  • M24: 6,603,400 km (0.094 R)
  • M25: 6,876,565 km (0.048 R)
  • M26: 7,273,000 km (0.061 R)
  • M27: 7,393,426 km (0.118 R)
  • M28: 7,636,373 km (0.026 R)
  • M29: 7,881,863 km (0.025 R)
  • M30: 8,047,019 km (0.117 R)
  • M31: 8,464,846 km (0.046 R)
  • M32: 9,061,741 km (0.095 R)
  • M33: 9,849,075 km (0.119 R)
  • M34: 10,341,102 km (0.106 R)
  • M35: 11,024,765 km (0.068 R)
  • M36: 11,209,668 km (0.039 R)
  • M37: 11,817,334 km (0.11 R)
  • M38: 12,244,436 km (0.111 R)
  • M39: 14,102,741 km (0.102 R)
  • M40: 15,527,361 km (0.086 R)
  • M41: 16,047,364 km (0.039 R)
  • M42: 16,256,950 km (0.084 R)
  • M43: 16,414,626 km (0.104 R)
  • M44: 16,678,667 km (0.095 R)
  • M45: 16,837,839 km (0.116 R)
  • M46: 17,104,123 km (0.073 R)
  • M47: 17,857,348 km (0.108 R)
  • M48: 18,238,075 km (0.11 R)
  • M49: 19,731,211 km (0.058 R)
  • M50: 20,634,483 km (0.065 R)
  • M51: 20,862,470 km (0.109 R)
  • M52: 21,033,909 km (0.036 R)
  • M53: 21,148,501 km (0.08 R)
  • M54: 23,424,334 km (0.12 R)
  • M55: 23,840,964 km (0.102 R)
  • M56: 24,380,264 km (0.027 R)
  • M57: 25,227,138 km (0.077 R)
  • M58: 25,593,054 km (0.115 R)
  • M59: 26,701,425 km (0.077 R)
  • M60: 29,092,148 km (0.11 R)
  • M61: 29,925,708 km (0.05 R)
  • M62: 30,183,764 km (0.085 R)
  • M63: 31,288,694 km (0.062 R)
  • M64: 31,419,592 km (0.06 R)
  • M65: 31,944,830 km (0.061 R)
  • M66: 32,738,297 km (0.076 R)
  • M67: 33,004,133 km (0.067 R)
  • M68: 33,940,466 km (0.067 R)
  • M69: 34,142,273 km (0.058 R)
  • M70: 34,344,380 km (0.051 R)
  • M71: 35,497,630 km (0.093 R)
  • M72: 39,314,620 km (0.06 R)
  • M73: 39,526,450 km (0.063 R)
  • M74: 39,951,458 km (0.069 R)
  • M75: 41,092,142 km (0.105 R)
  • M76: 41,450,877 km (0.095 R)
  • M77: 41,594,641 km (0.112 R)
  • M78: 42,605,474 km (0.109 R)
  • M79: 43,041,252 km (0.068 R)
  • M80: 43,114,106 km (0.117 R)
  • M81: 44,210,509 km (0.116 R)
  • M82: 49,142,601 km (0.078 R)
  • M83: 50,748,086 km (0.038 R)
  • M84: 51,133,001 km (0.096 R)
  • M85: 51,210,044 km (0.089 R)
  • M86: 51,518,664 km (0.098 R)

Planet 5 - Ice Giant

Semi-Major Axis: 12.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.7

Radius: 4.4

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 11.53 AU - 13.67 AU

Year: 16418 Days

Day: 21.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 27.7 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (66)

Outer Limit: 108,009,810 km

  • M1: 92,003 km (0.087 R)
  • M2: 160,369 km (0.102 R)
  • M3: 313,707 km (0.114 R)
  • M4: 438,621 km (0.1 R)
  • M5: 1,002,755 km (0.066 R)
  • M6: 1,124,976 km (0.089 R)
  • M7: 1,537,268 km (0.115 R)
  • M8: 1,732,493 km (0.111 R)
  • M9: 1,787,096 km (0.119 R)
  • M10: 1,898,098 km (0.063 R)
  • M11: 2,049,491 km (0.095 R)
  • M12: 2,264,164 km (0.098 R)
  • M13: 2,693,809 km (0.102 R)
  • M14: 3,304,767 km (0.039 R)
  • M15: 3,533,053 km (0.112 R)
  • M16: 4,421,365 km (0.057 R)
  • M17: 5,058,502 km (0.113 R)
  • M18: 5,401,082 km (0.112 R)
  • M19: 5,454,488 km (0.032 R)
  • M20: 5,805,744 km (0.078 R)
  • M21: 6,108,679 km (0.095 R)
  • M22: 6,304,054 km (0.071 R)
  • M23: 6,787,255 km (0.06 R)
  • M24: 6,815,978 km (0.036 R)
  • M25: 8,523,039 km (0.056 R)
  • M26: 8,929,946 km (0.115 R)
  • M27: 9,247,392 km (0.105 R)
  • M28: 9,893,057 km (0.116 R)
  • M29: 9,991,193 km (0.086 R)
  • M30: 10,888,631 km (0.119 R)
  • M31: 11,329,795 km (0.082 R)
  • M32: 11,880,913 km (0.084 R)
  • M33: 11,950,476 km (0.095 R)
  • M34: 12,440,709 km (0.067 R)
  • M35: 12,937,523 km (0.107 R)
  • M36: 13,080,688 km (0.082 R)
  • M37: 13,767,791 km (0.066 R)
  • M38: 13,877,297 km (0.098 R)
  • M39: 13,913,799 km (0.106 R)
  • M40: 15,139,005 km (0.034 R)
  • M41: 15,707,328 km (0.078 R)
  • M42: 18,812,979 km (0.097 R)
  • M43: 20,164,596 km (0.073 R)
  • M44: 20,663,954 km (0.101 R)
  • M45: 20,705,692 km (0.102 R)
  • M46: 21,844,580 km (0.108 R)
  • M47: 22,873,963 km (0.089 R)
  • M48: 23,133,815 km (0.115 R)
  • M49: 23,220,581 km (0.119 R)
  • M50: 23,743,725 km (0.109 R)
  • M51: 24,979,553 km (0.03 R)
  • M52: 25,650,201 km (0.034 R)
  • M53: 25,830,017 km (0.107 R)
  • M54: 26,100,490 km (0.116 R)
  • M55: 27,100,552 km (0.076 R)
  • M56: 27,283,660 km (0.114 R)
  • M57: 28,437,658 km (0.081 R)
  • M58: 28,950,479 km (0.078 R)
  • M59: 29,090,802 km (0.081 R)
  • M60: 29,607,513 km (0.119 R)
  • M61: 30,032,521 km (0.095 R)
  • M62: 30,127,216 km (0.098 R)
  • M63: 30,222,061 km (0.114 R)
  • M64: 30,507,045 km (0.115 R)
  • M65: 31,223,619 km (0.114 R)
  • M66: 31,511,744 km (0.104 R)

Planet 6 - Ice Giant

Semi-Major Axis: 18.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 984.1

Radius: 4.4

Gravity: 50.83 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 14.79 AU - 21.37 AU

Year: 28221 Days

Day: 20.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 49.4 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (91)

Outer Limit: 108,009,810 km

  • M1: 58,194 km (0.081 R)
  • M2: 315,352 km (0.112 R)
  • M3: 456,124 km (0.086 R)
  • M4: 854,353 km (0.074 R)
  • M5: 886,218 km (0.049 R)
  • M6: 2,272,092 km (0.049 R)
  • M7: 3,067,205 km (0.082 R)
  • M8: 3,519,888 km (0.109 R)
  • M9: 4,047,071 km (0.1 R)
  • M10: 4,375,139 km (0.07 R)
  • M11: 5,290,977 km (0.048 R)
  • M12: 5,892,511 km (0.039 R)
  • M13: 6,452,156 km (0.102 R)
  • M14: 8,025,776 km (0.095 R)
  • M15: 8,230,426 km (0.061 R)
  • M16: 9,350,765 km (0.118 R)
  • M17: 12,510,421 km (0.115 R)
  • M18: 12,668,396 km (0.036 R)
  • M19: 13,792,774 km (0.093 R)
  • M20: 14,119,795 km (0.066 R)
  • M21: 14,532,236 km (0.089 R)
  • M22: 15,538,282 km (0.095 R)
  • M23: 16,135,327 km (0.087 R)
  • M24: 16,479,851 km (0.103 R)
  • M25: 17,352,007 km (0.072 R)
  • M26: 18,687,916 km (0.075 R)
  • M27: 19,780,130 km (0.115 R)
  • M28: 21,457,122 km (0.088 R)
  • M29: 23,665,037 km (0.067 R)
  • M30: 25,542,789 km (0.057 R)
  • M31: 25,643,020 km (0.096 R)
  • M32: 26,044,989 km (0.072 R)
  • M33: 26,550,181 km (0.072 R)
  • M34: 27,365,490 km (0.051 R)
  • M35: 28,085,504 km (0.068 R)
  • M36: 28,188,876 km (0.079 R)
  • M37: 30,176,733 km (0.106 R)
  • M38: 30,388,713 km (0.083 R)
  • M39: 31,885,589 km (0.087 R)
  • M40: 32,969,426 km (0.113 R)
  • M41: 37,423,852 km (0.072 R)
  • M42: 38,681,521 km (0.096 R)
  • M43: 39,720,778 km (0.037 R)
  • M44: 40,069,191 km (0.113 R)
  • M45: 40,886,295 km (0.098 R)
  • M46: 47,370,615 km (0.085 R)
  • M47: 48,481,977 km (0.067 R)
  • M48: 49,352,188 km (0.078 R)
  • M49: 50,604,472 km (0.095 R)
  • M50: 50,730,284 km (0.071 R)
  • M51: 51,234,578 km (0.101 R)
  • M52: 52,502,420 km (0.087 R)
  • M53: 52,629,728 km (0.028 R)
  • M54: 53,140,156 km (0.119 R)
  • M55: 55,846,680 km (0.104 R)
  • M56: 56,106,831 km (0.047 R)
  • M57: 57,151,323 km (0.105 R)
  • M58: 57,675,813 km (0.084 R)
  • M59: 58,465,840 km (0.099 R)
  • M60: 58,994,369 km (0.084 R)
  • M61: 59,391,851 km (0.105 R)
  • M62: 59,790,230 km (0.085 R)
  • M63: 63,144,513 km (0.106 R)
  • M64: 63,415,435 km (0.083 R)
  • M65: 63,958,475 km (0.077 R)
  • M66: 64,094,609 km (0.057 R)
  • M67: 71,298,495 km (0.053 R)
  • M68: 72,854,911 km (0.1 R)
  • M69: 75,138,822 km (0.101 R)
  • M70: 75,569,514 km (0.083 R)
  • M71: 75,857,191 km (0.048 R)
  • M72: 77,301,109 km (0.036 R)
  • M73: 79,922,812 km (0.061 R)
  • M74: 80,362,480 km (0.093 R)
  • M75: 82,573,387 km (0.111 R)
  • M76: 83,017,992 km (0.078 R)
  • M77: 84,505,743 km (0.062 R)
  • M78: 86,152,217 km (0.088 R)
  • M79: 87,054,891 km (0.039 R)
  • M80: 87,809,462 km (0.119 R)
  • M81: 88,414,586 km (0.043 R)
  • M82: 90,696,402 km (0.052 R)
  • M83: 94,232,746 km (0.115 R)
  • M84: 94,852,231 km (0.104 R)
  • M85: 95,939,807 km (0.114 R)
  • M86: 96,407,151 km (0.094 R)
  • M87: 96,719,212 km (0.102 R)
  • M88: 96,875,243 km (0.067 R)
  • M89: 104,306,816 km (0.049 R)
  • M90: 104,947,693 km (0.085 R)
  • M91: 107,686,082 km (0.099 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 348 - 14,295 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit