Star System Generated (Seed: 1766635395)

Star Details

Spectral Class: M1V

Temperature: 3,483 K

Mass: 0.32 sol

Luminosity: 0.02 lux

Habitable Zone (HZ)

Inner Boundary: 0.13 AU

Outer Boundary: 0.19 AU

Physical Limits

Snow Line: 0.68 AU

Max System Radius: 11.3 AU

Planetary System (6 Planets)

Planet 1 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 205.2

Radius: 14

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.7 AU - 0.84 AU

Year: 436 Days

Day: 14.1 Hours

Environment

Temp: -136 °C

Axial Tilt: 9.9 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (31)

Outer Limit: 75,498,330 km

  • M1: 177,423 km (0.047 R)
  • M2: 271,670 km (0.089 R)
  • M3: 386,112 km (0.086 R)
  • M4: 479,012 km (0.087 R)
  • M5: 604,375 km (0.093 R)
  • M6: 701,464 km (0.12 R)
  • M7: 789,278 km (0.09 R)
  • M8: 967,749 km (0.027 R)
  • M9: 1,082,041 km (0.111 R)
  • M10: 1,197,531 km (0.114 R)
  • M11: 1,298,510 km (0.056 R)
  • M12: 1,390,961 km (0.061 R)
  • M13: 1,542,055 km (0.063 R)
  • M14: 1,665,473 km (0.104 R)
  • M15: 1,822,551 km (0.067 R)
  • M16: 1,918,443 km (0.08 R)
  • M17: 2,024,957 km (0.027 R)
  • M18: 2,161,091 km (0.091 R)
  • M19: 2,263,117 km (0.032 R)
  • M20: 2,357,214 km (0.093 R)
  • M21: 2,481,529 km (0.064 R)
  • M22: 2,627,836 km (0.101 R)
  • M23: 2,731,956 km (0.045 R)
  • M24: 2,837,572 km (0.04 R)
  • M25: 3,120,911 km (0.102 R)
  • M26: 3,210,370 km (0.093 R)
  • M27: 3,386,597 km (0.099 R)
  • M28: 3,495,055 km (0.052 R)
  • M29: 3,765,678 km (0.102 R)
  • M30: 3,861,121 km (0.082 R)
  • M31: 3,951,777 km (0.12 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.5

Radius: 14.3

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.09 AU - 1.11 AU

Year: 745 Days

Day: 7.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 20 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (44)

Outer Limit: 75,498,330 km

  • M1: 181,612 km (0.057 R)
  • M2: 272,268 km (0.1 R)
  • M3: 403,765 km (0.036 R)
  • M4: 496,665 km (0.115 R)
  • M5: 697,276 km (0.116 R)
  • M6: 806,632 km (0.078 R)
  • M7: 906,413 km (0.114 R)
  • M8: 1,062,294 km (0.087 R)
  • M9: 1,191,547 km (0.101 R)
  • M10: 1,320,351 km (0.078 R)
  • M11: 1,415,495 km (0.06 R)
  • M12: 1,619,846 km (0.073 R)
  • M13: 1,827,338 km (0.032 R)
  • M14: 2,177,995 km (0.085 R)
  • M15: 2,447,571 km (0.119 R)
  • M16: 2,558,572 km (0.031 R)
  • M17: 2,712,060 km (0.091 R)
  • M18: 2,927,032 km (0.069 R)
  • M19: 3,260,336 km (0.109 R)
  • M20: 3,356,527 km (0.118 R)
  • M21: 3,552,052 km (0.081 R)
  • M22: 3,714,814 km (0.106 R)
  • M23: 3,834,044 km (0.057 R)
  • M24: 3,954,470 km (0.069 R)
  • M25: 4,057,543 km (0.105 R)
  • M26: 4,189,788 km (0.106 R)
  • M27: 4,304,529 km (0.082 R)
  • M28: 4,733,875 km (0.085 R)
  • M29: 5,146,466 km (0.108 R)
  • M30: 5,290,080 km (0.084 R)
  • M31: 5,560,403 km (0.048 R)
  • M32: 5,707,907 km (0.1 R)
  • M33: 6,060,659 km (0.081 R)
  • M34: 6,310,936 km (0.056 R)
  • M35: 6,420,741 km (0.055 R)
  • M36: 6,821,513 km (0.11 R)
  • M37: 7,047,705 km (0.119 R)
  • M38: 7,138,960 km (0.119 R)
  • M39: 7,287,959 km (0.115 R)
  • M40: 7,414,818 km (0.115 R)
  • M41: 7,565,763 km (0.066 R)
  • M42: 7,859,124 km (0.077 R)
  • M43: 7,977,456 km (0.085 R)
  • M44: 8,132,140 km (0.111 R)

Asteroid Belt

Center: 1.72 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.8

Radius: 11.8

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 1.79 AU - 2.87 AU

Year: 2296 Days

Day: 14.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 28.7 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (69)

Outer Limit: 75,498,330 km

  • M1: 148,251 km (0.114 R)
  • M2: 336,894 km (0.054 R)
  • M3: 413,937 km (0.049 R)
  • M4: 527,332 km (0.071 R)
  • M5: 622,477 km (0.112 R)
  • M6: 700,417 km (0.09 R)
  • M7: 782,098 km (0.087 R)
  • M8: 920,476 km (0.088 R)
  • M9: 1,058,106 km (0.067 R)
  • M10: 1,163,871 km (0.098 R)
  • M11: 1,492,388 km (0.064 R)
  • M12: 1,579,155 km (0.106 R)
  • M13: 1,838,558 km (0.104 R)
  • M14: 2,111,873 km (0.112 R)
  • M15: 2,347,789 km (0.093 R)
  • M16: 2,540,321 km (0.065 R)
  • M17: 2,671,519 km (0.107 R)
  • M18: 2,805,110 km (0.061 R)
  • M19: 3,092,936 km (0.115 R)
  • M20: 3,290,256 km (0.12 R)
  • M21: 3,477,253 km (0.086 R)
  • M22: 3,623,560 km (0.082 R)
  • M23: 3,727,081 km (0.06 R)
  • M24: 3,861,869 km (0.074 R)
  • M25: 4,044,079 km (0.079 R)
  • M26: 4,167,198 km (0.081 R)
  • M27: 4,338,488 km (0.111 R)
  • M28: 4,417,027 km (0.089 R)
  • M29: 4,882,725 km (0.088 R)
  • M30: 5,380,886 km (0.06 R)
  • M31: 5,550,679 km (0.12 R)
  • M32: 5,913,005 km (0.09 R)
  • M33: 6,035,526 km (0.113 R)
  • M34: 6,141,142 km (0.095 R)
  • M35: 6,300,913 km (0.12 R)
  • M36: 6,624,343 km (0.119 R)
  • M37: 6,788,303 km (0.115 R)
  • M38: 6,898,257 km (0.086 R)
  • M39: 7,101,411 km (0.09 R)
  • M40: 7,665,694 km (0.114 R)
  • M41: 7,914,625 km (0.113 R)
  • M42: 8,108,055 km (0.114 R)
  • M43: 8,283,384 km (0.102 R)
  • M44: 8,917,230 km (0.115 R)
  • M45: 9,158,980 km (0.033 R)
  • M46: 9,321,443 km (0.091 R)
  • M47: 9,402,974 km (0.106 R)
  • M48: 9,897,395 km (0.118 R)
  • M49: 10,442,380 km (0.103 R)
  • M50: 10,527,202 km (0.088 R)
  • M51: 10,740,080 km (0.086 R)
  • M52: 10,825,650 km (0.112 R)
  • M53: 10,975,846 km (0.048 R)
  • M54: 11,062,015 km (0.114 R)
  • M55: 11,278,483 km (0.08 R)
  • M56: 11,561,821 km (0.088 R)
  • M57: 12,202,698 km (0.108 R)
  • M58: 12,292,008 km (0.103 R)
  • M59: 12,719,260 km (0.053 R)
  • M60: 12,832,505 km (0.093 R)
  • M61: 13,518,860 km (0.101 R)
  • M62: 13,889,863 km (0.094 R)
  • M63: 14,029,887 km (0.076 R)
  • M64: 14,689,464 km (0.115 R)
  • M65: 14,832,030 km (0.061 R)
  • M66: 15,023,067 km (0.119 R)
  • M67: 15,286,808 km (0.091 R)
  • M68: 16,112,139 km (0.04 R)
  • M69: 16,554,949 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.7

Radius: 10.1

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.98 AU - 2.92 AU

Year: 2476 Days

Day: 5.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 11.6 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (74)

Outer Limit: 75,498,330 km

  • M1: 367,712 km (0.12 R)
  • M2: 543,339 km (0.096 R)
  • M3: 688,300 km (0.046 R)
  • M4: 846,874 km (0.05 R)
  • M5: 911,949 km (0.076 R)
  • M6: 1,008,140 km (0.072 R)
  • M7: 1,087,726 km (0.084 R)
  • M8: 1,232,537 km (0.104 R)
  • M9: 1,416,991 km (0.088 R)
  • M10: 1,622,539 km (0.119 R)
  • M11: 1,765,105 km (0.051 R)
  • M12: 1,887,028 km (0.112 R)
  • M13: 1,999,376 km (0.086 R)
  • M14: 2,101,102 km (0.103 R)
  • M15: 2,336,420 km (0.084 R)
  • M16: 2,566,651 km (0.088 R)
  • M17: 2,933,165 km (0.04 R)
  • M18: 3,020,082 km (0.034 R)
  • M19: 3,166,987 km (0.073 R)
  • M20: 3,622,064 km (0.099 R)
  • M21: 3,984,988 km (0.05 R)
  • M22: 4,065,472 km (0.102 R)
  • M23: 4,130,248 km (0.091 R)
  • M24: 4,211,629 km (0.11 R)
  • M25: 4,277,153 km (0.069 R)
  • M26: 4,542,839 km (0.096 R)
  • M27: 4,626,913 km (0.098 R)
  • M28: 4,745,693 km (0.101 R)
  • M29: 4,916,983 km (0.096 R)
  • M30: 4,986,097 km (0.058 R)
  • M31: 5,676,790 km (0.111 R)
  • M32: 6,042,856 km (0.114 R)
  • M33: 6,191,407 km (0.062 R)
  • M34: 6,492,099 km (0.043 R)
  • M35: 7,049,351 km (0.084 R)
  • M36: 7,422,897 km (0.067 R)
  • M37: 8,086,962 km (0.096 R)
  • M38: 8,312,555 km (0.105 R)
  • M39: 8,498,655 km (0.076 R)
  • M40: 8,665,307 km (0.112 R)
  • M41: 8,749,082 km (0.118 R)
  • M42: 8,896,286 km (0.04 R)
  • M43: 9,022,996 km (0.081 R)
  • M44: 9,193,088 km (0.077 R)
  • M45: 9,666,117 km (0.093 R)
  • M46: 10,037,120 km (0.12 R)
  • M47: 10,323,899 km (0.079 R)
  • M48: 10,434,900 km (0.08 R)
  • M49: 10,635,810 km (0.059 R)
  • M50: 10,860,656 km (0.111 R)
  • M51: 10,973,602 km (0.057 R)
  • M52: 11,200,692 km (0.086 R)
  • M53: 11,269,058 km (0.112 R)
  • M54: 11,521,280 km (0.113 R)
  • M55: 12,077,784 km (0.105 R)
  • M56: 12,241,743 km (0.116 R)
  • M57: 12,524,633 km (0.057 R)
  • M58: 12,833,553 km (0.058 R)
  • M59: 13,531,576 km (0.078 R)
  • M60: 13,824,190 km (0.072 R)
  • M61: 13,995,778 km (0.11 R)
  • M62: 14,192,649 km (0.105 R)
  • M63: 14,291,533 km (0.092 R)
  • M64: 14,365,734 km (0.068 R)
  • M65: 14,440,234 km (0.045 R)
  • M66: 14,639,199 km (0.09 R)
  • M67: 14,789,096 km (0.117 R)
  • M68: 15,014,839 km (0.098 R)
  • M69: 15,393,770 km (0.115 R)
  • M70: 15,852,587 km (0.11 R)
  • M71: 16,835,894 km (0.087 R)
  • M72: 17,097,840 km (0.026 R)
  • M73: 17,282,144 km (0.037 R)
  • M74: 17,467,047 km (0.095 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 989.7

Radius: 4

Gravity: 61.86 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 5.81 AU - 9.25 AU

Year: 13342 Days

Day: 18.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 37.4 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (93)

Outer Limit: 75,498,330 km

  • M1: 221,554 km (0.105 R)
  • M2: 443,109 km (0.086 R)
  • M3: 634,893 km (0.09 R)
  • M4: 739,911 km (0.102 R)
  • M5: 1,014,124 km (0.106 R)
  • M6: 1,397,543 km (0.116 R)
  • M7: 1,534,575 km (0.093 R)
  • M8: 1,910,814 km (0.11 R)
  • M9: 2,062,955 km (0.108 R)
  • M10: 2,314,429 km (0.111 R)
  • M11: 3,054,938 km (0.108 R)
  • M12: 3,304,767 km (0.102 R)
  • M13: 3,450,475 km (0.099 R)
  • M14: 3,635,527 km (0.064 R)
  • M15: 4,092,998 km (0.078 R)
  • M16: 4,894,992 km (0.097 R)
  • M17: 4,977,869 km (0.077 R)
  • M18: 5,019,457 km (0.12 R)
  • M19: 5,963,270 km (0.1 R)
  • M20: 6,051,683 km (0.103 R)
  • M21: 6,185,274 km (0.087 R)
  • M22: 6,409,970 km (0.08 R)
  • M23: 6,683,135 km (0.038 R)
  • M24: 7,146,889 km (0.1 R)
  • M25: 7,288,109 km (0.04 R)
  • M26: 7,910,287 km (0.091 R)
  • M27: 8,900,475 km (0.069 R)
  • M28: 9,205,056 km (0.066 R)
  • M29: 9,929,110 km (0.105 R)
  • M30: 10,724,821 km (0.087 R)
  • M31: 10,994,696 km (0.039 R)
  • M32: 11,485,825 km (0.094 R)
  • M33: 13,002,000 km (0.087 R)
  • M34: 13,521,254 km (0.09 R)
  • M35: 15,300,272 km (0.069 R)
  • M36: 15,664,842 km (0.119 R)
  • M37: 16,588,609 km (0.086 R)
  • M38: 19,858,968 km (0.101 R)
  • M39: 20,123,606 km (0.099 R)
  • M40: 20,656,474 km (0.101 R)
  • M41: 20,723,494 km (0.036 R)
  • M42: 20,790,514 km (0.116 R)
  • M43: 22,695,942 km (0.064 R)
  • M44: 22,903,434 km (0.083 R)
  • M45: 25,012,166 km (0.108 R)
  • M46: 25,872,802 km (0.111 R)
  • M47: 26,524,750 km (0.095 R)
  • M48: 27,402,291 km (0.059 R)
  • M49: 27,992,604 km (0.116 R)
  • M50: 29,788,676 km (0.039 R)
  • M51: 29,864,373 km (0.068 R)
  • M52: 30,929,958 km (0.064 R)
  • M53: 31,006,552 km (0.061 R)
  • M54: 31,775,934 km (0.098 R)
  • M55: 32,240,585 km (0.056 R)
  • M56: 32,629,540 km (0.113 R)
  • M57: 33,255,008 km (0.037 R)
  • M58: 35,395,305 km (0.084 R)
  • M59: 36,279,877 km (0.116 R)
  • M60: 36,522,375 km (0.116 R)
  • M61: 37,090,398 km (0.08 R)
  • M62: 39,723,770 km (0.071 R)
  • M63: 39,807,096 km (0.117 R)
  • M64: 43,699,333 km (0.075 R)
  • M65: 44,647,784 km (0.08 R)
  • M66: 44,734,401 km (0.104 R)
  • M67: 45,168,085 km (0.096 R)
  • M68: 45,777,547 km (0.081 R)
  • M69: 46,127,157 km (0.067 R)
  • M70: 46,477,515 km (0.109 R)
  • M71: 46,565,329 km (0.099 R)
  • M72: 46,652,994 km (0.04 R)
  • M73: 47,357,450 km (0.117 R)
  • M74: 47,533,975 km (0.084 R)
  • M75: 49,760,291 km (0.077 R)
  • M76: 49,939,808 km (0.087 R)
  • M77: 50,660,272 km (0.095 R)
  • M78: 53,944,543 km (0.094 R)
  • M79: 54,776,308 km (0.119 R)
  • M80: 56,358,903 km (0.111 R)
  • M81: 57,108,838 km (0.064 R)
  • M82: 57,202,785 km (0.115 R)
  • M83: 57,390,830 km (0.057 R)
  • M84: 58,145,401 km (0.058 R)
  • M85: 58,239,947 km (0.113 R)
  • M86: 59,093,104 km (0.102 R)
  • M87: 59,378,387 km (0.082 R)
  • M88: 60,620,049 km (0.102 R)
  • M89: 62,063,369 km (0.093 R)
  • M90: 62,159,860 km (0.061 R)
  • M91: 62,353,290 km (0.076 R)
  • M92: 62,740,749 km (0.11 R)
  • M93: 64,591,573 km (0.077 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 758.4

Radius: 7.2

Gravity: 14.63 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 7.64 AU - 11.28 AU

Year: 18787 Days

Day: 15.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 20.9 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (92)

Outer Limit: 75,498,330 km

  • M1: 101,876 km (0.1 R)
  • M2: 461,958 km (0.105 R)
  • M3: 785,538 km (0.109 R)
  • M4: 882,627 km (0.103 R)
  • M5: 1,638,396 km (0.102 R)
  • M6: 1,860,250 km (0.113 R)
  • M7: 2,582,358 km (0.048 R)
  • M8: 2,953,960 km (0.09 R)
  • M9: 3,705,988 km (0.029 R)
  • M10: 4,602,528 km (0.095 R)
  • M11: 4,735,820 km (0.098 R)
  • M12: 5,052,070 km (0.053 R)
  • M13: 5,800,358 km (0.083 R)
  • M14: 5,992,891 km (0.103 R)
  • M15: 6,089,980 km (0.079 R)
  • M16: 6,138,599 km (0.093 R)
  • M17: 6,935,806 km (0.066 R)
  • M18: 7,088,845 km (0.081 R)
  • M19: 7,765,027 km (0.085 R)
  • M20: 9,011,177 km (0.056 R)
  • M21: 9,290,327 km (0.106 R)
  • M22: 9,346,426 km (0.058 R)
  • M23: 9,914,300 km (0.07 R)
  • M24: 11,382,154 km (0.032 R)
  • M25: 11,502,580 km (0.111 R)
  • M26: 12,979,410 km (0.1 R)
  • M27: 13,357,893 km (0.068 R)
  • M28: 13,612,209 km (0.079 R)
  • M29: 13,996,676 km (0.111 R)
  • M30: 14,645,482 km (0.038 R)
  • M31: 14,842,054 km (0.109 R)
  • M32: 14,907,727 km (0.109 R)
  • M33: 15,637,017 km (0.105 R)
  • M34: 16,107,053 km (0.109 R)
  • M35: 18,173,897 km (0.071 R)
  • M36: 18,314,669 km (0.104 R)
  • M37: 18,455,740 km (0.1 R)
  • M38: 18,597,110 km (0.093 R)
  • M39: 19,095,121 km (0.082 R)
  • M40: 20,395,575 km (0.087 R)
  • M41: 23,923,691 km (0.096 R)
  • M42: 24,000,734 km (0.086 R)
  • M43: 25,323,928 km (0.086 R)
  • M44: 26,910,712 km (0.06 R)
  • M45: 30,764,204 km (0.114 R)
  • M46: 31,184,275 km (0.115 R)
  • M47: 32,029,951 km (0.104 R)
  • M48: 32,711,968 km (0.101 R)
  • M49: 33,054,697 km (0.099 R)
  • M50: 33,312,603 km (0.094 R)
  • M51: 33,398,772 km (0.084 R)
  • M52: 33,484,940 km (0.098 R)
  • M53: 33,830,362 km (0.088 R)
  • M54: 34,090,213 km (0.101 R)
  • M55: 35,927,873 km (0.101 R)
  • M56: 36,814,241 km (0.053 R)
  • M57: 37,797,548 km (0.111 R)
  • M58: 39,061,350 km (0.104 R)
  • M59: 39,881,147 km (0.038 R)
  • M60: 39,972,551 km (0.074 R)
  • M61: 40,155,659 km (0.105 R)
  • M62: 40,706,628 km (0.116 R)
  • M63: 41,723,145 km (0.061 R)
  • M64: 42,374,494 km (0.108 R)
  • M65: 42,467,694 km (0.025 R)
  • M66: 42,654,542 km (0.101 R)
  • M67: 43,216,730 km (0.053 R)
  • M68: 43,498,722 km (0.073 R)
  • M69: 44,159,047 km (0.098 R)
  • M70: 51,637,894 km (0.046 R)
  • M71: 52,236,884 km (0.054 R)
  • M72: 52,938,647 km (0.081 R)
  • M73: 53,542,574 km (0.091 R)
  • M74: 53,946,488 km (0.068 R)
  • M75: 58,248,474 km (0.075 R)
  • M76: 59,184,508 km (0.1 R)
  • M77: 65,982,834 km (0.097 R)
  • M78: 66,849,903 km (0.109 R)
  • M79: 67,611,506 km (0.08 R)
  • M80: 68,157,388 km (0.1 R)
  • M81: 68,814,422 km (0.114 R)
  • M82: 70,355,430 km (0.111 R)
  • M83: 70,465,983 km (0.09 R)
  • M84: 71,130,197 km (0.104 R)
  • M85: 71,685,355 km (0.064 R)
  • M86: 71,796,506 km (0.08 R)
  • M87: 72,130,558 km (0.105 R)
  • M88: 72,688,259 km (0.07 R)
  • M89: 72,800,009 km (0.056 R)
  • M90: 73,920,347 km (0.09 R)
  • M91: 74,595,183 km (0.056 R)
  • M92: 74,820,627 km (0.086 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 470 - 18,185 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit