🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.48 AU - 0.56 AU

Year: 136 Days

Day: 30.6 Hours

Environment

Temp: 216 °C

Axial Tilt: 43.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 75,670,236 km

• M1: 94,546 km (0.075 R)
• M2: 118,631 km (0.068 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.95 AU - 1.11 AU

Year: 378 Days

Day: 33.2 Hours

Environment

Temp: 31 °C

Axial Tilt: 35.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Gas Giant

Semi-Major Axis: 7.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 173.2

Radius: 14

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 6.41 AU - 9.49 AU

Year: 8107 Days

Day: 12.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 75,670,236 km

• M1: 200,312 km (0.045 R)
• M2: 360,381 km (0.111 R)
• M3: 539,749 km (0.096 R)
• M4: 777,610 km (0.042 R)
• M5: 1,090,419 km (0.048 R)
• M6: 1,181,674 km (0.075 R)
• M7: 1,303,297 km (0.039 R)
• M8: 1,530,685 km (0.048 R)
• M9: 1,725,462 km (0.089 R)
• M10: 2,106,936 km (0.093 R)
• M11: 2,376,512 km (0.049 R)
• M12: 2,497,985 km (0.104 R)
• M13: 2,586,098 km (0.076 R)
• M14: 2,783,867 km (0.111 R)
• M15: 3,137,217 km (0.082 R)
• M16: 3,329,301 km (0.104 R)
• M17: 3,505,377 km (0.067 R)
• M18: 3,664,699 km (0.063 R)
• M19: 3,867,255 km (0.097 R)
• M20: 3,969,879 km (0.116 R)
• M21: 4,136,082 km (0.118 R)
• M22: 4,411,192 km (0.105 R)
• M23: 4,627,062 km (0.119 R)
• M24: 4,912,794 km (0.111 R)
• M25: 5,024,244 km (0.09 R)
• M26: 5,114,153 km (0.053 R)
• M27: 5,501,910 km (0.043 R)
• M28: 5,594,512 km (0.113 R)
• M29: 6,306,149 km (0.104 R)
• M30: 7,197,902 km (0.092 R)
• M31: 7,478,398 km (0.114 R)
• M32: 7,840,574 km (0.058 R)
• M33: 8,288,021 km (0.059 R)
• M34: 8,555,203 km (0.095 R)
• M35: 8,961,361 km (0.085 R)
• M36: 9,070,717 km (0.108 R)
• M37: 9,290,925 km (0.091 R)
• M38: 9,652,354 km (0.081 R)
• M39: 10,504,314 km (0.087 R)
• M40: 11,262,027 km (0.053 R)
• M41: 11,528,610 km (0.09 R)
• M42: 11,797,138 km (0.06 R)
• M43: 12,370,846 km (0.028 R)
• M44: 12,768,777 km (0.05 R)
• M45: 13,202,012 km (0.061 R)
• M46: 13,955,836 km (0.116 R)
• M47: 14,210,302 km (0.114 R)
• M48: 14,853,124 km (0.074 R)
• M49: 15,308,799 km (0.107 R)
• M50: 15,670,078 km (0.051 R)
• M51: 16,000,988 km (0.092 R)
• M52: 16,200,552 km (0.074 R)
• M53: 16,468,033 km (0.059 R)
• M54: 17,075,251 km (0.099 R)
• M55: 17,449,844 km (0.116 R)
• M56: 17,758,464 km (0.104 R)
• M57: 17,861,836 km (0.056 R)
• M58: 17,999,765 km (0.105 R)
• M59: 18,138,143 km (0.096 R)
• M60: 19,257,734 km (0.042 R)
• M61: 19,363,948 km (0.114 R)
• M62: 19,505,618 km (0.085 R)
• M63: 19,647,885 km (0.028 R)
• M64: 19,790,302 km (0.104 R)
• M65: 20,507,923 km (0.079 R)
• M66: 21,417,030 km (0.083 R)
• M67: 22,786,448 km (0.105 R)
• M68: 22,973,595 km (0.116 R)
• M69: 23,274,287 km (0.055 R)
• M70: 23,576,325 km (0.037 R)

Planet 4 - Gas Giant

Semi-Major Axis: 11.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.2

Radius: 12.3

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 10.69 AU - 12.33 AU

Year: 14122 Days

Day: 7.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 75,670,236 km

• M1: 154,385 km (0.089 R)
• M2: 306,376 km (0.108 R)
• M3: 630,106 km (0.06 R)
• M4: 1,038,359 km (0.12 R)
• M5: 1,243,009 km (0.085 R)
• M6: 1,400,535 km (0.053 R)
• M7: 1,502,411 km (0.077 R)
• M8: 1,649,616 km (0.106 R)
• M9: 1,823,748 km (0.103 R)
• M10: 1,935,946 km (0.074 R)
• M11: 2,262,518 km (0.102 R)
• M12: 2,432,461 km (0.099 R)
• M13: 2,632,025 km (0.101 R)
• M14: 3,345,607 km (0.084 R)
• M15: 3,456,309 km (0.094 R)
• M16: 3,568,208 km (0.029 R)
• M17: 3,738,451 km (0.112 R)
• M18: 5,068,226 km (0.039 R)
• M19: 5,227,997 km (0.095 R)
• M20: 5,750,542 km (0.1 R)
• M21: 6,358,358 km (0.076 R)
• M22: 6,461,730 km (0.03 R)
• M23: 6,951,364 km (0.076 R)
• M24: 7,057,878 km (0.056 R)
• M25: 7,525,670 km (0.105 R)
• M26: 7,781,782 km (0.119 R)
• M27: 8,796,504 km (0.045 R)
• M28: 9,027,633 km (0.095 R)
• M29: 9,144,020 km (0.099 R)
• M30: 9,653,999 km (0.079 R)
• M31: 10,375,360 km (0.108 R)
• M32: 11,827,507 km (0.062 R)
• M33: 12,040,235 km (0.104 R)
• M34: 13,122,426 km (0.115 R)
• M35: 13,210,390 km (0.043 R)
• M36: 13,342,634 km (0.076 R)
• M37: 14,010,589 km (0.097 R)
• M38: 14,371,269 km (0.114 R)
• M39: 14,598,359 km (0.12 R)
• M40: 15,844,658 km (0.087 R)
• M41: 16,173,325 km (0.067 R)
• M42: 16,362,118 km (0.117 R)
• M43: 16,742,096 km (0.119 R)
• M44: 17,510,580 km (0.114 R)
• M45: 18,143,529 km (0.029 R)
• M46: 18,339,801 km (0.085 R)
• M47: 20,086,955 km (0.066 R)
• M48: 21,109,157 km (0.059 R)
• M49: 22,726,759 km (0.026 R)
• M50: 23,470,260 km (0.08 R)
• M51: 24,060,125 km (0.098 R)
• M52: 25,090,405 km (0.112 R)
• M53: 25,528,577 km (0.087 R)
• M54: 25,858,890 km (0.086 R)
• M55: 26,246,049 km (0.084 R)
• M56: 26,746,454 km (0.067 R)
• M57: 26,858,203 km (0.097 R)
• M58: 27,644,191 km (0.115 R)
• M59: 29,989,137 km (0.089 R)
• M60: 30,454,087 km (0.101 R)
• M61: 31,156,001 km (0.08 R)
• M62: 32,337,824 km (0.116 R)
• M63: 32,456,754 km (0.12 R)
• M64: 32,874,431 km (0.097 R)
• M65: 33,233,765 km (0.116 R)
• M66: 33,474,020 km (0.066 R)
• M67: 34,441,020 km (0.106 R)
• M68: 35,233,440 km (0.11 R)
• M69: 36,588,049 km (0.095 R)
• M70: 37,396,625 km (0.069 R)
• M71: 37,709,135 km (0.11 R)
• M72: 37,959,712 km (0.06 R)
• M73: 38,651,901 km (0.117 R)
• M74: 40,432,565 km (0.057 R)
• M75: 40,817,629 km (0.117 R)
• M76: 41,397,471 km (0.067 R)
• M77: 42,239,856 km (0.048 R)
• M78: 42,761,055 km (0.109 R)
• M79: 43,809,736 km (0.079 R)
• M80: 44,073,328 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 12.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.9

Radius: 13

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 10.65 AU - 14.15 AU

Year: 15791 Days

Day: 5.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 75,670,236 km

• M1: 170,093 km (0.114 R)
• M2: 482,004 km (0.068 R)
• M3: 617,241 km (0.085 R)
• M4: 699,071 km (0.059 R)
• M5: 1,128,267 km (0.088 R)
• M6: 1,232,238 km (0.028 R)
• M7: 1,472,791 km (0.11 R)
• M8: 1,564,345 km (0.102 R)
• M9: 1,875,359 km (0.097 R)
• M10: 2,419,746 km (0.105 R)
• M11: 2,781,024 km (0.111 R)
• M12: 2,924,638 km (0.114 R)
• M13: 3,012,153 km (0.108 R)
• M14: 3,340,221 km (0.083 R)
• M15: 3,493,260 km (0.072 R)
• M16: 3,711,523 km (0.119 R)
• M17: 4,527,729 km (0.12 R)
• M18: 4,663,414 km (0.117 R)
• M19: 5,043,692 km (0.069 R)
• M20: 5,578,654 km (0.104 R)
• M21: 6,244,514 km (0.113 R)
• M22: 6,779,925 km (0.114 R)
• M23: 7,250,710 km (0.098 R)
• M24: 7,530,158 km (0.103 R)
• M25: 7,854,038 km (0.081 R)
• M26: 8,641,671 km (0.04 R)
• M27: 9,023,444 km (0.106 R)
• M28: 9,497,819 km (0.085 R)
• M29: 9,892,010 km (0.071 R)
• M30: 10,024,553 km (0.064 R)
• M31: 10,741,726 km (0.054 R)
• M32: 10,969,114 km (0.105 R)
• M33: 11,244,374 km (0.103 R)
• M34: 11,521,729 km (0.063 R)
• M35: 11,661,304 km (0.111 R)
• M36: 12,462,999 km (0.091 R)
• M37: 13,184,958 km (0.067 R)
• M38: 13,920,680 km (0.104 R)
• M39: 14,019,714 km (0.107 R)
• M40: 14,119,197 km (0.04 R)
• M41: 14,669,717 km (0.038 R)
• M42: 14,922,238 km (0.1 R)
• M43: 15,023,815 km (0.06 R)
• M44: 15,431,918 km (0.086 R)
• M45: 15,534,392 km (0.102 R)
• M46: 16,783,385 km (0.091 R)
• M47: 16,941,660 km (0.111 R)
• M48: 17,902,527 km (0.109 R)
• M49: 18,172,551 km (0.102 R)
• M50: 19,376,664 km (0.036 R)
• M51: 19,487,367 km (0.081 R)
• M52: 20,946,245 km (0.085 R)
• M53: 22,440,129 km (0.091 R)
• M54: 23,494,346 km (0.094 R)
• M55: 24,445,040 km (0.087 R)
• M56: 25,408,301 km (0.117 R)
• M57: 25,833,607 km (0.102 R)
• M58: 27,807,851 km (0.112 R)
• M59: 29,256,706 km (0.098 R)
• M60: 30,150,553 km (0.115 R)
• M61: 30,859,198 km (0.115 R)
• M62: 31,053,376 km (0.087 R)
• M63: 31,312,929 km (0.071 R)
• M64: 31,508,154 km (0.094 R)
• M65: 32,555,937 km (0.038 R)
• M66: 32,885,651 km (0.106 R)
• M67: 33,349,255 km (0.118 R)
• M68: 33,482,098 km (0.09 R)
• M69: 34,282,746 km (0.083 R)
• M70: 34,416,785 km (0.111 R)
• M71: 35,157,295 km (0.054 R)
• M72: 35,903,190 km (0.072 R)
• M73: 36,312,190 km (0.065 R)
• M74: 37,548,318 km (0.097 R)
• M75: 39,428,464 km (0.075 R)
• M76: 39,850,479 km (0.083 R)
• M77: 40,486,270 km (0.071 R)
• M78: 41,553,352 km (0.12 R)
• M79: 41,696,367 km (0.114 R)
• M80: 42,269,776 km (0.117 R)
• M81: 43,715,191 km (0.072 R)
• M82: 43,933,304 km (0.088 R)
• M83: 44,151,867 km (0.07 R)
• M84: 46,209,137 km (0.083 R)
• M85: 47,473,388 km (0.11 R)
• M86: 47,772,434 km (0.079 R)
• M87: 48,673,612 km (0.108 R)
• M88: 48,899,804 km (0.095 R)
• M89: 49,277,539 km (0.087 R)
• M90: 50,416,427 km (0.07 R)

Planet 6 - Ice Giant

Semi-Major Axis: 12.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 610.5

Radius: 5.4

Gravity: 20.94 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 12.13 AU - 13.59 AU

Year: 16678 Days

Day: 19.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 75,670,236 km

• M1: 69,264 km (0.086 R)
• M2: 152,291 km (0.077 R)
• M3: 186,249 km (0.098 R)
• M4: 665,262 km (0.106 R)
• M5: 706,551 km (0.06 R)
• M6: 835,654 km (0.115 R)
• M7: 880,383 km (0.052 R)
• M8: 2,693,958 km (0.094 R)
• M9: 3,000,185 km (0.09 R)
• M10: 3,498,346 km (0.102 R)
• M11: 3,571,649 km (0.094 R)
• M12: 3,983,642 km (0.114 R)
• M13: 4,175,875 km (0.102 R)
• M14: 4,214,770 km (0.057 R)
• M15: 4,292,711 km (0.094 R)
• M16: 4,569,617 km (0.114 R)
• M17: 4,649,801 km (0.109 R)
• M18: 4,690,043 km (0.046 R)
• M19: 5,182,070 km (0.091 R)
• M20: 5,733,638 km (0.081 R)
• M21: 5,863,638 km (0.101 R)
• M22: 6,259,175 km (0.041 R)
• M23: 6,393,065 km (0.072 R)
• M24: 7,029,903 km (0.113 R)
• M25: 7,262,229 km (0.084 R)
• M26: 7,926,144 km (0.086 R)
• M27: 7,974,314 km (0.09 R)
• M28: 8,857,840 km (0.053 R)
• M29: 9,412,997 km (0.084 R)
• M30: 9,566,335 km (0.08 R)
• M31: 10,345,441 km (0.081 R)
• M32: 11,469,968 km (0.061 R)
• M33: 11,963,641 km (0.098 R)
• M34: 12,858,535 km (0.074 R)
• M35: 13,659,034 km (0.064 R)
• M36: 14,534,480 km (0.068 R)
• M37: 14,711,754 km (0.089 R)
• M38: 14,770,995 km (0.103 R)
• M39: 15,548,455 km (0.098 R)
• M40: 16,523,534 km (0.106 R)
• M41: 16,894,237 km (0.118 R)
• M42: 17,267,633 km (0.106 R)
• M43: 17,392,697 km (0.114 R)
• M44: 17,959,374 km (0.119 R)
• M45: 18,340,549 km (0.09 R)
• M46: 19,695,457 km (0.064 R)
• M47: 20,682,654 km (0.119 R)
• M48: 20,815,646 km (0.115 R)
• M49: 20,882,068 km (0.112 R)
• M50: 21,956,330 km (0.109 R)
• M51: 23,117,209 km (0.095 R)
• M52: 23,255,139 km (0.05 R)
• M53: 23,809,399 km (0.06 R)
• M54: 24,789,863 km (0.116 R)
• M55: 25,783,343 km (0.085 R)
• M56: 26,141,330 km (0.07 R)
• M57: 26,717,581 km (0.073 R)
• M58: 27,370,875 km (0.04 R)
• M59: 27,443,729 km (0.109 R)
• M60: 29,735,718 km (0.078 R)
• M61: 30,942,524 km (0.096 R)
• M62: 31,628,281 km (0.069 R)
• M63: 32,088,294 km (0.107 R)
• M64: 32,550,552 km (0.064 R)
• M65: 34,342,585 km (0.108 R)
• M66: 36,246,517 km (0.113 R)
• M67: 36,567,105 km (0.072 R)
• M68: 37,534,704 km (0.099 R)
• M69: 37,859,182 km (0.085 R)
• M70: 38,265,939 km (0.063 R)
• M71: 38,347,469 km (0.107 R)
• M72: 38,592,361 km (0.105 R)
• M73: 38,837,851 km (0.087 R)
• M74: 39,990,204 km (0.067 R)
• M75: 42,159,971 km (0.118 R)
• M76: 42,666,061 km (0.046 R)
• M77: 45,571,999 km (0.108 R)
• M78: 46,438,620 km (0.119 R)
• M79: 46,874,099 km (0.064 R)
• M80: 47,661,283 km (0.027 R)
• M81: 48,806,006 km (0.069 R)
• M82: 49,959,705 km (0.067 R)
• M83: 51,032,621 km (0.115 R)
• M84: 51,212,138 km (0.096 R)
• M85: 51,571,921 km (0.085 R)
• M86: 54,663,511 km (0.053 R)
• M87: 55,861,341 km (0.09 R)
• M88: 56,417,097 km (0.042 R)
• M89: 56,509,997 km (0.11 R)
• M90: 59,790,080 km (0.057 R)
• M91: 59,884,776 km (0.108 R)
• M92: 60,168,862 km (0.099 R)
• M93: 62,170,631 km (0.07 R)
• M94: 62,458,308 km (0.039 R)
• M95: 63,131,498 km (0.063 R)
• M96: 63,613,802 km (0.094 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 525.4

Radius: 3.5

Gravity: 42.89 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 12.54 AU - 19 AU

Year: 22648 Days

Day: 22.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 75,670,236 km

• M1: 142,866 km (0.104 R)
• M2: 168,746 km (0.116 R)
• M3: 889,060 km (0.091 R)
• M4: 1,019,061 km (0.087 R)
• M5: 1,182,870 km (0.032 R)
• M6: 1,659,489 km (0.071 R)
• M7: 1,754,783 km (0.066 R)
• M8: 1,819,409 km (0.047 R)
• M9: 1,884,634 km (0.114 R)
• M10: 2,543,463 km (0.116 R)
• M11: 3,425,941 km (0.106 R)
• M12: 3,836,587 km (0.096 R)
• M13: 3,878,474 km (0.082 R)
• M14: 4,047,670 km (0.106 R)
• M15: 5,532,578 km (0.067 R)
• M16: 5,963,869 km (0.036 R)
• M17: 6,012,488 km (0.088 R)
• M18: 7,011,652 km (0.102 R)
• M19: 7,321,320 km (0.045 R)
• M20: 8,935,331 km (0.114 R)
• M21: 9,102,582 km (0.085 R)
• M22: 9,781,906 km (0.084 R)
• M23: 10,536,028 km (0.101 R)
• M24: 11,854,135 km (0.097 R)
• M25: 14,380,095 km (0.101 R)
• M26: 14,707,116 km (0.119 R)
• M27: 16,515,156 km (0.111 R)
• M28: 17,619,188 km (0.087 R)
• M29: 18,533,680 km (0.074 R)
• M30: 18,604,590 km (0.075 R)
• M31: 18,675,649 km (0.094 R)
• M32: 20,188,981 km (0.066 R)
• M33: 21,367,961 km (0.116 R)
• M34: 21,815,857 km (0.112 R)
• M35: 22,720,925 km (0.074 R)
• M36: 23,254,391 km (0.086 R)
• M37: 23,792,195 km (0.047 R)
• M38: 24,411,680 km (0.043 R)
• M39: 24,567,411 km (0.087 R)
• M40: 26,541,355 km (0.026 R)
• M41: 26,701,425 km (0.109 R)
• M42: 27,831,188 km (0.073 R)
• M43: 28,075,182 km (0.118 R)
• M44: 28,238,393 km (0.101 R)
• M45: 28,565,564 km (0.071 R)
• M46: 29,223,794 km (0.112 R)
• M47: 29,306,372 km (0.101 R)
• M48: 29,389,100 km (0.093 R)
• M49: 29,471,828 km (0.055 R)
• M50: 29,803,785 km (0.098 R)
• M51: 29,886,962 km (0.119 R)
• M52: 30,387,516 km (0.07 R)
• M53: 30,471,291 km (0.066 R)
• M54: 31,736,141 km (0.031 R)
• M55: 32,846,008 km (0.089 R)
• M56: 35,279,516 km (0.059 R)
• M57: 35,985,469 km (0.082 R)
• M58: 39,127,921 km (0.076 R)
• M59: 39,219,027 km (0.05 R)
• M60: 40,041,815 km (0.102 R)
• M61: 41,147,792 km (0.084 R)
• M62: 43,201,172 km (0.096 R)
• M63: 44,145,584 km (0.103 R)
• M64: 45,478,949 km (0.095 R)
• M65: 46,054,602 km (0.08 R)
• M66: 46,246,985 km (0.108 R)
• M67: 46,536,008 km (0.038 R)
• M68: 46,922,419 km (0.059 R)
• M69: 47,115,999 km (0.093 R)
• M70: 50,150,143 km (0.051 R)
• M71: 52,341,602 km (0.11 R)
• M72: 53,752,310 km (0.086 R)
• M73: 54,869,357 km (0.108 R)
• M74: 55,789,085 km (0.06 R)
• M75: 57,333,234 km (0.037 R)
• M76: 57,851,142 km (0.075 R)
• M77: 59,204,704 km (0.081 R)
• M78: 59,623,279 km (0.109 R)
• M79: 61,201,686 km (0.058 R)
• M80: 61,307,451 km (0.082 R)
• M81: 63,007,182 km (0.086 R)
• M82: 64,507,200 km (0.035 R)
• M83: 66,778,994 km (0.077 R)
• M84: 68,198,528 km (0.094 R)
• M85: 74,651,581 km (0.057 R)

Kuiper Belt

Range: 30.3 - 46.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 348 - 18,000 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit