G7V Star System Generated (Seed: 1768174485)

Star Details

Spectral Class: G7V

Temperature: 5,400 K

Mass: 0.95 sol

Luminosity: 0.84 lux

Habitable Zone (HZ)

Inner Boundary: 0.87 AU

Outer Boundary: 1.26 AU

Physical Limits

Snow Line: 4.4 AU

Max System Radius: 19.5 AU

Planetary System (5 Planets)

Planet 1 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 774.6

Radius: 13.4

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 5.02 AU - 5.44 AU

Year: 4482 Days

Day: 6.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 44.5 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (75)

Outer Limit: 35,637,324 km

  • M1: 169,195 km (0.093 R)
  • M2: 295,605 km (0.099 R)
  • M3: 390,600 km (0.119 R)
  • M4: 541,694 km (0.098 R)
  • M5: 912,846 km (0.053 R)
  • M6: 1,198,728 km (0.105 R)
  • M7: 1,498,372 km (0.114 R)
  • M8: 1,641,238 km (0.087 R)
  • M9: 1,772,286 km (0.104 R)
  • M10: 1,890,019 km (0.071 R)
  • M11: 2,027,799 km (0.083 R)
  • M12: 2,295,579 km (0.026 R)
  • M13: 2,461,932 km (0.108 R)
  • M14: 3,437,310 km (0.039 R)
  • M15: 3,521,833 km (0.114 R)
  • M16: 3,889,245 km (0.12 R)
  • M17: 4,111,249 km (0.025 R)
  • M18: 4,269,224 km (0.096 R)
  • M19: 4,591,159 km (0.099 R)
  • M20: 4,945,107 km (0.036 R)
  • M21: 6,059,611 km (0.119 R)
  • M22: 6,474,147 km (0.092 R)
  • M23: 7,113,528 km (0.103 R)
  • M24: 7,276,590 km (0.074 R)
  • M25: 7,495,901 km (0.078 R)
  • M26: 8,309,264 km (0.055 R)
  • M27: 8,423,707 km (0.083 R)
  • M28: 8,567,470 km (0.113 R)
  • M29: 8,915,883 km (0.025 R)
  • M30: 9,357,945 km (0.047 R)
  • M31: 9,928,212 km (0.086 R)
  • M32: 10,110,722 km (0.08 R)
  • M33: 10,324,946 km (0.059 R)
  • M34: 10,509,849 km (0.12 R)
  • M35: 10,633,716 km (0.071 R)
  • M36: 11,008,309 km (0.103 R)
  • M37: 11,165,686 km (0.094 R)
  • M38: 11,706,333 km (0.115 R)
  • M39: 11,802,524 km (0.089 R)
  • M40: 12,320,581 km (0.106 R)
  • M41: 12,978,662 km (0.113 R)
  • M42: 13,178,376 km (0.066 R)
  • M43: 13,513,475 km (0.113 R)
  • M44: 14,055,468 km (0.117 R)
  • M45: 14,157,793 km (0.031 R)
  • M46: 14,432,155 km (0.032 R)
  • M47: 14,639,049 km (0.086 R)
  • M48: 17,052,212 km (0.103 R)
  • M49: 17,344,228 km (0.085 R)
  • M50: 17,674,540 km (0.079 R)
  • M51: 18,155,646 km (0.098 R)
  • M52: 18,416,395 km (0.107 R)
  • M53: 19,055,029 km (0.08 R)
  • M54: 19,853,732 km (0.11 R)
  • M55: 20,084,113 km (0.108 R)
  • M56: 20,315,241 km (0.098 R)
  • M57: 20,469,776 km (0.055 R)
  • M58: 21,799,551 km (0.062 R)
  • M59: 22,037,262 km (0.089 R)
  • M60: 22,996,185 km (0.112 R)
  • M61: 23,278,326 km (0.077 R)
  • M62: 23,642,896 km (0.075 R)
  • M63: 24,050,251 km (0.074 R)
  • M64: 24,254,901 km (0.064 R)
  • M65: 24,583,268 km (0.038 R)
  • M66: 24,706,836 km (0.036 R)
  • M67: 24,830,703 km (0.052 R)
  • M68: 25,161,763 km (0.055 R)
  • M69: 25,410,994 km (0.103 R)
  • M70: 25,911,997 km (0.051 R)
  • M71: 26,163,620 km (0.105 R)
  • M72: 27,093,521 km (0.096 R)
  • M73: 27,948,323 km (0.03 R)
  • M74: 28,551,950 km (0.045 R)
  • M75: 29,116,383 km (0.073 R)

Planet 2 - Gas Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.9

Radius: 9.6

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 6.86 AU - 6.96 AU

Year: 6807 Days

Day: 6.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 16.4 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (86)

Outer Limit: 35,637,324 km

  • M1: 120,277 km (0.039 R)
  • M2: 246,687 km (0.07 R)
  • M3: 599,738 km (0.111 R)
  • M4: 706,401 km (0.116 R)
  • M5: 781,200 km (0.093 R)
  • M6: 926,011 km (0.052 R)
  • M7: 1,167,911 km (0.119 R)
  • M8: 1,335,311 km (0.114 R)
  • M9: 1,413,999 km (0.081 R)
  • M10: 1,727,855 km (0.031 R)
  • M11: 1,814,173 km (0.07 R)
  • M12: 2,100,354 km (0.075 R)
  • M13: 2,192,806 km (0.116 R)
  • M14: 2,267,754 km (0.053 R)
  • M15: 3,022,176 km (0.112 R)
  • M16: 3,105,951 km (0.065 R)
  • M17: 3,361,913 km (0.104 R)
  • M18: 3,646,897 km (0.098 R)
  • M19: 3,985,586 km (0.119 R)
  • M20: 4,123,965 km (0.1 R)
  • M21: 4,790,573 km (0.083 R)
  • M22: 5,337,802 km (0.062 R)
  • M23: 5,593,165 km (0.038 R)
  • M24: 5,904,927 km (0.054 R)
  • M25: 5,983,765 km (0.041 R)
  • M26: 6,929,224 km (0.072 R)
  • M27: 7,040,375 km (0.103 R)
  • M28: 7,661,505 km (0.107 R)
  • M29: 7,833,992 km (0.117 R)
  • M30: 7,949,780 km (0.103 R)
  • M31: 8,241,496 km (0.054 R)
  • M32: 8,329,759 km (0.05 R)
  • M33: 8,715,722 km (0.109 R)
  • M34: 8,835,699 km (0.058 R)
  • M35: 8,956,275 km (0.117 R)
  • M36: 9,168,405 km (0.056 R)
  • M37: 9,382,330 km (0.084 R)
  • M38: 10,033,828 km (0.072 R)
  • M39: 10,159,640 km (0.101 R)
  • M40: 10,285,901 km (0.047 R)
  • M41: 10,349,181 km (0.114 R)
  • M42: 10,508,203 km (0.085 R)
  • M43: 10,699,988 km (0.089 R)
  • M44: 11,314,985 km (0.111 R)
  • M45: 11,544,468 km (0.077 R)
  • M46: 11,941,351 km (0.111 R)
  • M47: 12,208,533 km (0.092 R)
  • M48: 12,275,702 km (0.109 R)
  • M49: 12,342,872 km (0.034 R)
  • M50: 12,477,659 km (0.117 R)
  • M51: 12,579,087 km (0.116 R)
  • M52: 13,469,792 km (0.069 R)
  • M53: 14,486,908 km (0.094 R)
  • M54: 14,736,288 km (0.079 R)
  • M55: 14,986,864 km (0.108 R)
  • M56: 15,637,914 km (0.107 R)
  • M57: 15,710,918 km (0.07 R)
  • M58: 15,893,727 km (0.079 R)
  • M59: 15,967,030 km (0.111 R)
  • M60: 16,520,392 km (0.092 R)
  • M61: 17,305,781 km (0.074 R)
  • M62: 17,494,573 km (0.094 R)
  • M63: 19,341,509 km (0.077 R)
  • M64: 19,694,709 km (0.109 R)
  • M65: 20,010,361 km (0.086 R)
  • M66: 20,129,291 km (0.07 R)
  • M67: 20,327,807 km (0.109 R)
  • M68: 21,695,282 km (0.118 R)
  • M69: 21,817,503 km (0.08 R)
  • M70: 22,390,164 km (0.066 R)
  • M71: 23,592,332 km (0.089 R)
  • M72: 23,676,107 km (0.112 R)
  • M73: 24,180,252 km (0.096 R)
  • M74: 24,349,148 km (0.081 R)
  • M75: 25,327,518 km (0.077 R)
  • M76: 26,405,670 km (0.096 R)
  • M77: 26,623,035 km (0.093 R)
  • M78: 27,763,270 km (0.063 R)
  • M79: 27,984,376 km (0.102 R)
  • M80: 28,250,511 km (0.112 R)
  • M81: 28,428,233 km (0.086 R)
  • M82: 28,740,444 km (0.108 R)
  • M83: 28,964,093 km (0.118 R)
  • M84: 29,774,015 km (0.111 R)
  • M85: 29,909,850 km (0.072 R)
  • M86: 30,136,491 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 9.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108.9

Radius: 13.8

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 7.48 AU - 11.9 AU

Year: 11304 Days

Day: 12.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 147.8 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (81)

Outer Limit: 35,637,324 km

  • M1: 195,524 km (0.106 R)
  • M2: 387,309 km (0.094 R)
  • M3: 542,741 km (0.108 R)
  • M4: 793,467 km (0.102 R)
  • M5: 902,674 km (0.114 R)
  • M6: 1,083,986 km (0.047 R)
  • M7: 1,278,015 km (0.101 R)
  • M8: 1,424,172 km (0.108 R)
  • M9: 1,622,987 km (0.115 R)
  • M10: 1,897,200 km (0.091 R)
  • M11: 2,905,191 km (0.039 R)
  • M12: 3,341,568 km (0.108 R)
  • M13: 3,443,743 km (0.094 R)
  • M14: 4,013,561 km (0.097 R)
  • M15: 4,210,282 km (0.059 R)
  • M16: 4,298,695 km (0.097 R)
  • M17: 4,410,145 km (0.112 R)
  • M18: 4,681,516 km (0.115 R)
  • M19: 4,796,407 km (0.06 R)
  • M20: 4,912,046 km (0.114 R)
  • M21: 5,005,246 km (0.097 R)
  • M22: 5,099,193 km (0.059 R)
  • M23: 5,577,308 km (0.045 R)
  • M24: 5,797,366 km (0.117 R)
  • M25: 6,372,570 km (0.068 R)
  • M26: 6,602,652 km (0.108 R)
  • M27: 6,705,874 km (0.039 R)
  • M28: 6,809,545 km (0.104 R)
  • M29: 7,018,683 km (0.079 R)
  • M30: 7,496,798 km (0.105 R)
  • M31: 7,848,802 km (0.113 R)
  • M32: 8,068,112 km (0.076 R)
  • M33: 8,456,917 km (0.098 R)
  • M34: 9,051,718 km (0.071 R)
  • M35: 9,137,737 km (0.079 R)
  • M36: 9,224,055 km (0.102 R)
  • M37: 10,043,253 km (0.089 R)
  • M38: 10,461,529 km (0.101 R)
  • M39: 10,551,886 km (0.069 R)
  • M40: 10,642,542 km (0.097 R)
  • M41: 10,733,498 km (0.101 R)
  • M42: 10,885,639 km (0.1 R)
  • M43: 11,284,467 km (0.114 R)
  • M44: 11,501,234 km (0.12 R)
  • M45: 11,938,957 km (0.116 R)
  • M46: 12,033,503 km (0.111 R)
  • M47: 12,255,058 km (0.025 R)
  • M48: 12,927,650 km (0.087 R)
  • M49: 13,284,889 km (0.113 R)
  • M50: 13,777,216 km (0.051 R)
  • M51: 13,876,399 km (0.053 R)
  • M52: 14,409,417 km (0.074 R)
  • M53: 14,510,245 km (0.053 R)
  • M54: 14,611,074 km (0.1 R)
  • M55: 15,598,869 km (0.04 R)
  • M56: 16,925,802 km (0.094 R)
  • M57: 17,423,814 km (0.113 R)
  • M58: 18,507,052 km (0.042 R)
  • M59: 19,315,479 km (0.111 R)
  • M60: 19,798,530 km (0.09 R)
  • M61: 20,285,621 km (0.1 R)
  • M62: 21,118,881 km (0.115 R)
  • M63: 21,348,065 km (0.112 R)
  • M64: 22,350,819 km (0.118 R)
  • M65: 22,701,477 km (0.104 R)
  • M66: 22,857,956 km (0.1 R)
  • M67: 23,014,735 km (0.1 R)
  • M68: 23,132,618 km (0.078 R)
  • M69: 23,368,983 km (0.089 R)
  • M70: 23,606,095 km (0.112 R)
  • M71: 23,724,876 km (0.106 R)
  • M72: 24,242,335 km (0.117 R)
  • M73: 24,442,198 km (0.113 R)
  • M74: 24,763,384 km (0.108 R)
  • M75: 25,288,174 km (0.105 R)
  • M76: 25,775,863 km (0.108 R)
  • M77: 26,184,564 km (0.111 R)
  • M78: 26,554,370 km (0.088 R)
  • M79: 27,050,137 km (0.115 R)
  • M80: 27,799,324 km (0.103 R)
  • M81: 28,134,572 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 11.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575

Radius: 10.1

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 11.49 AU - 11.61 AU

Year: 14710 Days

Day: 8 Hours

Environment

Temp: -192 °C

Axial Tilt: 26.4 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (90)

Outer Limit: 35,637,324 km

  • M1: 184,005 km (0.057 R)
  • M2: 329,115 km (0.048 R)
  • M3: 575,054 km (0.03 R)
  • M4: 1,372,560 km (0.104 R)
  • M5: 1,546,393 km (0.076 R)
  • M6: 2,431,115 km (0.114 R)
  • M7: 2,521,173 km (0.112 R)
  • M8: 3,215,307 km (0.108 R)
  • M9: 3,825,517 km (0.107 R)
  • M10: 4,288,373 km (0.118 R)
  • M11: 4,996,868 km (0.108 R)
  • M12: 5,267,191 km (0.058 R)
  • M13: 5,345,282 km (0.054 R)
  • M14: 5,463,165 km (0.083 R)
  • M15: 5,581,796 km (0.106 R)
  • M16: 5,661,531 km (0.112 R)
  • M17: 6,312,432 km (0.116 R)
  • M18: 7,159,156 km (0.089 R)
  • M19: 7,289,306 km (0.046 R)
  • M20: 8,086,513 km (0.068 R)
  • M21: 8,358,332 km (0.056 R)
  • M22: 8,957,771 km (0.119 R)
  • M23: 9,098,094 km (0.083 R)
  • M24: 9,192,041 km (0.069 R)
  • M25: 9,810,628 km (0.106 R)
  • M26: 10,003,759 km (0.038 R)
  • M27: 10,295,625 km (0.114 R)
  • M28: 10,541,115 km (0.081 R)
  • M29: 11,037,929 km (0.033 R)
  • M30: 11,238,690 km (0.119 R)
  • M31: 11,899,763 km (0.102 R)
  • M32: 12,416,922 km (0.062 R)
  • M33: 13,047,178 km (0.089 R)
  • M34: 13,312,864 km (0.112 R)
  • M35: 13,741,612 km (0.034 R)
  • M36: 14,393,410 km (0.095 R)
  • M37: 14,944,229 km (0.056 R)
  • M38: 15,614,427 km (0.063 R)
  • M39: 17,332,409 km (0.088 R)
  • M40: 17,565,932 km (0.073 R)
  • M41: 18,213,690 km (0.103 R)
  • M42: 18,629,872 km (0.047 R)
  • M43: 18,989,206 km (0.055 R)
  • M44: 19,109,482 km (0.117 R)
  • M45: 19,350,784 km (0.088 R)
  • M46: 20,080,821 km (0.077 R)
  • M47: 20,449,281 km (0.116 R)
  • M48: 22,324,490 km (0.103 R)
  • M49: 22,515,078 km (0.11 R)
  • M50: 23,218,338 km (0.094 R)
  • M51: 23,993,853 km (0.079 R)
  • M52: 25,305,078 km (0.119 R)
  • M53: 25,836,151 km (0.03 R)
  • M54: 27,383,292 km (0.101 R)
  • M55: 27,451,209 km (0.101 R)
  • M56: 28,065,159 km (0.042 R)
  • M57: 29,724,648 km (0.084 R)
  • M58: 30,919,337 km (0.092 R)
  • M59: 31,273,734 km (0.072 R)
  • M60: 31,558,120 km (0.106 R)
  • M61: 32,273,048 km (0.041 R)
  • M62: 32,416,662 km (0.111 R)
  • M63: 32,704,638 km (0.03 R)
  • M64: 32,776,744 km (0.04 R)
  • M65: 33,138,023 km (0.085 R)
  • M66: 33,937,623 km (0.112 R)
  • M67: 37,198,707 km (0.096 R)
  • M68: 38,637,689 km (0.104 R)
  • M69: 38,942,869 km (0.055 R)
  • M70: 39,479,028 km (0.076 R)
  • M71: 40,326,500 km (0.112 R)
  • M72: 40,946,433 km (0.043 R)
  • M73: 44,093,823 km (0.087 R)
  • M74: 44,572,536 km (0.051 R)
  • M75: 44,652,571 km (0.094 R)
  • M76: 45,213,563 km (0.082 R)
  • M77: 45,294,047 km (0.12 R)
  • M78: 46,100,080 km (0.101 R)
  • M79: 47,073,663 km (0.109 R)
  • M80: 47,236,575 km (0.111 R)
  • M81: 48,958,446 km (0.12 R)
  • M82: 50,867,914 km (0.119 R)
  • M83: 51,370,114 km (0.058 R)
  • M84: 51,789,736 km (0.116 R)
  • M85: 52,379,301 km (0.059 R)
  • M86: 53,734,957 km (0.106 R)
  • M87: 54,502,693 km (0.032 R)
  • M88: 55,016,412 km (0.097 R)
  • M89: 57,783,674 km (0.104 R)
  • M90: 58,132,835 km (0.098 R)

Planet 5 - Ice Giant

Semi-Major Axis: 12.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 110.4

Radius: 7.3

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 11.13 AU - 13.27 AU

Year: 15969 Days

Day: 18.2 Hours

Environment

Temp: -195 °C

Axial Tilt: 20.7 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (84)

Outer Limit: 35,637,324 km

  • M1: 111,600 km (0.112 R)
  • M2: 284,834 km (0.109 R)
  • M3: 476,320 km (0.09 R)
  • M4: 524,490 km (0.056 R)
  • M5: 693,536 km (0.094 R)
  • M6: 1,002,904 km (0.084 R)
  • M7: 1,317,508 km (0.109 R)
  • M8: 1,370,017 km (0.099 R)
  • M9: 1,718,580 km (0.112 R)
  • M10: 1,834,369 km (0.037 R)
  • M11: 2,176,499 km (0.035 R)
  • M12: 2,259,975 km (0.101 R)
  • M13: 2,344,498 km (0.086 R)
  • M14: 2,604,349 km (0.118 R)
  • M15: 2,737,791 km (0.119 R)
  • M16: 2,965,329 km (0.098 R)
  • M17: 3,104,754 km (0.104 R)
  • M18: 3,293,996 km (0.116 R)
  • M19: 3,342,016 km (0.117 R)
  • M20: 3,585,113 km (0.115 R)
  • M21: 3,733,813 km (0.102 R)
  • M22: 3,884,608 km (0.098 R)
  • M23: 4,011,766 km (0.113 R)
  • M24: 4,270,122 km (0.108 R)
  • M25: 4,401,469 km (0.065 R)
  • M26: 4,454,426 km (0.067 R)
  • M27: 4,641,124 km (0.116 R)
  • M28: 6,048,840 km (0.1 R)
  • M29: 6,226,114 km (0.079 R)
  • M30: 6,465,171 km (0.106 R)
  • M31: 6,707,221 km (0.106 R)
  • M32: 6,983,079 km (0.086 R)
  • M33: 7,262,677 km (0.108 R)
  • M34: 7,356,774 km (0.104 R)
  • M35: 7,609,445 km (0.084 R)
  • M36: 8,091,001 km (0.075 R)
  • M37: 8,450,335 km (0.114 R)
  • M38: 9,835,462 km (0.067 R)
  • M39: 10,044,001 km (0.091 R)
  • M40: 11,144,742 km (0.105 R)
  • M41: 12,320,581 km (0.103 R)
  • M42: 13,458,423 km (0.103 R)
  • M43: 14,039,760 km (0.116 R)
  • M44: 14,157,045 km (0.09 R)
  • M45: 15,146,934 km (0.104 R)
  • M46: 15,347,694 km (0.07 R)
  • M47: 15,670,527 km (0.081 R)
  • M48: 16,282,083 km (0.106 R)
  • M49: 16,570,059 km (0.117 R)
  • M50: 17,151,097 km (0.106 R)
  • M51: 17,402,272 km (0.108 R)
  • M52: 17,696,680 km (0.104 R)
  • M53: 18,333,219 km (0.105 R)
  • M54: 18,590,079 km (0.118 R)
  • M55: 19,454,455 km (0.051 R)
  • M56: 19,585,204 km (0.091 R)
  • M57: 20,111,190 km (0.114 R)
  • M58: 20,331,847 km (0.096 R)
  • M59: 20,908,995 km (0.099 R)
  • M60: 21,762,301 km (0.106 R)
  • M61: 21,852,808 km (0.107 R)
  • M62: 21,943,464 km (0.119 R)
  • M63: 22,307,137 km (0.063 R)
  • M64: 22,398,392 km (0.096 R)
  • M65: 24,249,067 km (0.086 R)
  • M66: 24,436,812 km (0.082 R)
  • M67: 24,861,072 km (0.079 R)
  • M68: 25,240,153 km (0.067 R)
  • M69: 25,430,441 km (0.098 R)
  • M70: 25,669,050 km (0.096 R)
  • M71: 25,956,278 km (0.063 R)
  • M72: 26,292,723 km (0.107 R)
  • M73: 26,437,235 km (0.084 R)
  • M74: 26,775,775 km (0.092 R)
  • M75: 27,750,854 km (0.109 R)
  • M76: 28,638,268 km (0.076 R)
  • M77: 28,985,934 km (0.064 R)
  • M78: 29,085,416 km (0.085 R)
  • M79: 29,785,684 km (0.105 R)
  • M80: 29,986,893 km (0.076 R)
  • M81: 30,238,816 km (0.046 R)
  • M82: 30,744,906 km (0.095 R)
  • M83: 33,578,289 km (0.109 R)
  • M84: 35,477,434 km (0.12 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 462 - 20,367 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit