🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.6

Radius: 12.6

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 2.94 AU - 3.44 AU

Year: 3933 Days

Day: 8.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 58,813,692 km

• M1: 186,249 km (0.081 R)
• M2: 289,621 km (0.092 R)
• M3: 523,443 km (0.071 R)
• M4: 651,200 km (0.081 R)
• M5: 859,290 km (0.082 R)
• M6: 1,040,004 km (0.109 R)
• M7: 1,154,746 km (0.05 R)
• M8: 1,356,254 km (0.065 R)
• M9: 1,440,328 km (0.105 R)
• M10: 1,643,482 km (0.069 R)
• M11: 1,840,951 km (0.077 R)
• M12: 1,966,464 km (0.089 R)
• M13: 2,078,662 km (0.081 R)
• M14: 2,209,710 km (0.04 R)
• M15: 2,326,696 km (0.047 R)
• M16: 2,761,726 km (0.117 R)
• M17: 3,072,291 km (0.057 R)
• M18: 3,887,749 km (0.092 R)
• M19: 3,989,326 km (0.037 R)
• M20: 4,854,750 km (0.084 R)
• M21: 4,942,265 km (0.03 R)
• M22: 5,388,067 km (0.117 R)
• M23: 5,569,978 km (0.106 R)
• M24: 5,684,719 km (0.108 R)
• M25: 5,777,171 km (0.059 R)
• M26: 6,104,491 km (0.077 R)
• M27: 6,462,030 km (0.117 R)
• M28: 6,631,225 km (0.114 R)
• M29: 6,949,419 km (0.098 R)
• M30: 7,073,137 km (0.117 R)
• M31: 7,474,059 km (0.102 R)
• M32: 7,805,269 km (0.113 R)
• M33: 8,167,445 km (0.098 R)
• M34: 9,150,902 km (0.114 R)
• M35: 9,587,877 km (0.114 R)
• M36: 9,670,455 km (0.092 R)
• M37: 9,836,658 km (0.095 R)
• M38: 10,087,534 km (0.113 R)
• M39: 10,968,067 km (0.041 R)
• M40: 11,286,411 km (0.044 R)
• M41: 11,991,765 km (0.079 R)
• M42: 12,319,833 km (0.083 R)
• M43: 12,620,675 km (0.084 R)
• M44: 12,711,331 km (0.054 R)
• M45: 13,383,325 km (0.058 R)
• M46: 13,599,494 km (0.079 R)
• M47: 14,160,934 km (0.111 R)
• M48: 14,318,162 km (0.114 R)
• M49: 14,412,857 km (0.054 R)
• M50: 15,049,247 km (0.088 R)
• M51: 15,274,092 km (0.073 R)
• M52: 16,613,741 km (0.104 R)
• M53: 17,247,288 km (0.093 R)
• M54: 17,482,755 km (0.091 R)
• M55: 17,651,651 km (0.117 R)
• M56: 18,332,321 km (0.088 R)
• M57: 18,710,355 km (0.094 R)
• M58: 19,056,226 km (0.078 R)
• M59: 20,532,158 km (0.092 R)
• M60: 20,960,606 km (0.094 R)
• M61: 21,319,941 km (0.106 R)
• M62: 21,681,219 km (0.031 R)
• M63: 22,081,095 km (0.11 R)
• M64: 22,446,712 km (0.052 R)
• M65: 22,851,224 km (0.107 R)
• M66: 23,369,581 km (0.107 R)
• M67: 23,481,031 km (0.089 R)
• M68: 24,041,575 km (0.026 R)
• M69: 24,304,717 km (0.105 R)
• M70: 24,757,999 km (0.095 R)
• M71: 24,985,537 km (0.119 R)
• M72: 25,099,680 km (0.076 R)
• M73: 25,404,860 km (0.028 R)

Planet 2 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.9

Radius: 9.2

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 3.38 AU - 3.86 AU

Year: 4754 Days

Day: 11.3 Hours

Environment

Temp: -221 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 58,813,692 km

• M1: 628,311 km (0.043 R)
• M2: 688,749 km (0.105 R)
• M3: 902,374 km (0.094 R)
• M4: 1,042,996 km (0.104 R)
• M5: 1,212,940 km (0.073 R)
• M6: 1,426,565 km (0.097 R)
• M7: 1,677,142 km (0.082 R)
• M8: 1,877,603 km (0.087 R)
• M9: 2,020,020 km (0.11 R)
• M10: 2,567,847 km (0.068 R)
• M11: 2,770,104 km (0.099 R)
• M12: 2,843,706 km (0.104 R)
• M13: 2,932,866 km (0.106 R)
• M14: 3,519,140 km (0.035 R)
• M15: 3,647,346 km (0.118 R)
• M16: 4,040,788 km (0.029 R)
• M17: 4,534,461 km (0.103 R)
• M18: 4,691,539 km (0.062 R)
• M19: 5,029,181 km (0.111 R)
• M20: 5,301,449 km (0.118 R)
• M21: 5,374,752 km (0.065 R)
• M22: 5,728,102 km (0.066 R)
• M23: 5,898,195 km (0.084 R)
• M24: 6,457,392 km (0.113 R)
• M25: 6,634,366 km (0.049 R)
• M26: 7,033,493 km (0.101 R)
• M27: 7,297,085 km (0.08 R)
• M28: 8,044,027 km (0.111 R)
• M29: 8,128,550 km (0.105 R)
• M30: 8,277,101 km (0.058 R)
• M31: 8,946,102 km (0.098 R)
• M32: 9,275,966 km (0.037 R)
• M33: 9,342,537 km (0.108 R)
• M34: 9,409,108 km (0.037 R)
• M35: 9,587,578 km (0.082 R)
• M36: 9,699,627 km (0.095 R)
• M37: 10,084,093 km (0.09 R)
• M38: 10,198,087 km (0.095 R)
• M39: 11,243,626 km (0.12 R)
• M40: 11,456,803 km (0.106 R)
• M41: 12,274,206 km (0.102 R)
• M42: 12,788,524 km (0.106 R)
• M43: 13,736,974 km (0.066 R)
• M44: 13,914,098 km (0.111 R)
• M45: 14,270,739 km (0.096 R)
• M46: 14,707,864 km (0.076 R)
• M47: 15,071,237 km (0.093 R)
• M48: 15,227,866 km (0.046 R)
• M49: 15,859,618 km (0.097 R)
• M50: 16,366,007 km (0.05 R)
• M51: 16,553,902 km (0.068 R)
• M52: 17,641,179 km (0.105 R)
• M53: 18,137,994 km (0.105 R)
• M54: 18,527,547 km (0.094 R)
• M55: 18,667,421 km (0.094 R)

Planet 3 - Ice Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 498.2

Radius: 4.6

Gravity: 23.54 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 5.64 AU - 6.3 AU

Year: 10069 Days

Day: 18.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 58,813,692 km

• M1: 58,642 km (0.044 R)
• M2: 136,583 km (0.089 R)
• M3: 179,517 km (0.081 R)
• M4: 352,602 km (0.118 R)
• M5: 390,301 km (0.056 R)
• M6: 945,459 km (0.076 R)
• M7: 999,314 km (0.096 R)
• M8: 1,244,355 km (0.092 R)
• M9: 1,634,955 km (0.06 R)
• M10: 1,743,713 km (0.075 R)
• M11: 1,877,453 km (0.12 R)
• M12: 2,084,198 km (0.03 R)
• M13: 2,594,775 km (0.098 R)
• M14: 3,061,670 km (0.115 R)
• M15: 3,223,086 km (0.086 R)
• M16: 3,304,916 km (0.096 R)
• M17: 3,470,521 km (0.09 R)
• M18: 3,723,940 km (0.072 R)
• M19: 3,983,343 km (0.066 R)
• M20: 4,459,064 km (0.059 R)
• M21: 4,611,354 km (0.058 R)
• M22: 4,983,853 km (0.055 R)
• M23: 6,124,387 km (0.091 R)
• M24: 6,498,980 km (0.119 R)
• M25: 7,127,740 km (0.115 R)
• M26: 7,449,376 km (0.074 R)
• M27: 7,521,482 km (0.103 R)
• M28: 7,702,794 km (0.101 R)
• M29: 8,404,857 km (0.057 R)
• M30: 9,398,337 km (0.113 R)
• M31: 9,476,277 km (0.096 R)
• M32: 11,079,817 km (0.076 R)
• M33: 11,786,367 km (0.102 R)
• M34: 12,379,074 km (0.075 R)
• M35: 12,421,859 km (0.106 R)
• M36: 12,808,420 km (0.09 R)
• M37: 13,593,360 km (0.118 R)
• M38: 14,080,750 km (0.109 R)
• M39: 14,304,249 km (0.09 R)
• M40: 14,348,979 km (0.059 R)
• M41: 14,438,887 km (0.1 R)
• M42: 14,890,523 km (0.051 R)
• M43: 15,900,758 km (0.031 R)
• M44: 16,554,949 km (0.083 R)
• M45: 16,885,411 km (0.101 R)
• M46: 17,027,678 km (0.118 R)
• M47: 17,265,689 km (0.116 R)
• M48: 17,696,830 km (0.112 R)
• M49: 17,937,981 km (0.1 R)
• M50: 18,423,427 km (0.071 R)
• M51: 18,472,195 km (0.109 R)
• M52: 18,913,060 km (0.083 R)
• M53: 19,955,458 km (0.097 R)
• M54: 20,105,954 km (0.115 R)
• M55: 21,169,445 km (0.117 R)
• M56: 21,220,458 km (0.111 R)
• M57: 22,043,695 km (0.091 R)
• M58: 23,034,631 km (0.07 R)
• M59: 23,720,986 km (0.099 R)
• M60: 24,414,073 km (0.076 R)
• M61: 24,575,041 km (0.051 R)
• M62: 24,843,868 km (0.117 R)
• M63: 25,059,738 km (0.114 R)
• M64: 26,422,874 km (0.083 R)
• M65: 27,307,895 km (0.1 R)
• M66: 27,698,046 km (0.055 R)
• M67: 27,809,945 km (0.107 R)
• M68: 27,865,895 km (0.08 R)
• M69: 28,596,830 km (0.06 R)
• M70: 28,709,926 km (0.061 R)
• M71: 29,848,366 km (0.073 R)
• M72: 31,466,865 km (0.051 R)
• M73: 31,700,387 km (0.093 R)
• M74: 31,993,001 km (0.119 R)
• M75: 32,640,161 km (0.062 R)
• M76: 33,768,129 km (0.107 R)
• M77: 33,947,347 km (0.028 R)
• M78: 34,306,831 km (0.083 R)
• M79: 34,607,373 km (0.119 R)
• M80: 36,367,542 km (0.089 R)
• M81: 36,490,062 km (0.098 R)
• M82: 36,858,223 km (0.071 R)
• M83: 37,227,729 km (0.11 R)
• M84: 38,218,815 km (0.03 R)
• M85: 38,842,788 km (0.041 R)
• M86: 39,155,896 km (0.103 R)
• M87: 39,407,071 km (0.094 R)
• M88: 39,470,052 km (0.088 R)
• M89: 40,417,156 km (0.04 R)
• M90: 41,052,797 km (0.113 R)
• M91: 41,307,862 km (0.065 R)
• M92: 41,371,740 km (0.102 R)
• M93: 41,435,618 km (0.073 R)
• M94: 41,755,758 km (0.093 R)
• M95: 42,140,823 km (0.079 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 318.5

Radius: 6.5

Gravity: 7.54 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 5.1 AU - 7.24 AU

Year: 10579 Days

Day: 18.7 Hours

Environment

Temp: -238 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 58,813,692 km

• M1: 166,054 km (0.061 R)
• M2: 242,199 km (0.076 R)
• M3: 1,119,590 km (0.072 R)
• M4: 2,117,857 km (0.079 R)
• M5: 2,636,064 km (0.104 R)
• M6: 2,682,888 km (0.099 R)
• M7: 3,018,885 km (0.119 R)
• M8: 3,166,987 km (0.078 R)
• M9: 3,317,632 km (0.114 R)
• M10: 3,444,790 km (0.104 R)
• M11: 3,651,834 km (0.114 R)
• M12: 4,491,676 km (0.051 R)
• M13: 4,947,800 km (0.098 R)
• M14: 5,269,884 km (0.109 R)
• M15: 5,508,493 km (0.025 R)
• M16: 5,934,398 km (0.11 R)
• M17: 6,434,204 km (0.116 R)
• M18: 7,407,339 km (0.063 R)
• M19: 8,495,065 km (0.071 R)
• M20: 8,809,968 km (0.084 R)
• M21: 9,271,478 km (0.068 R)
• M22: 9,996,878 km (0.096 R)
• M23: 10,815,627 km (0.068 R)
• M24: 11,386,343 km (0.117 R)
• M25: 12,005,678 km (0.117 R)
• M26: 12,875,141 km (0.093 R)
• M27: 13,764,799 km (0.091 R)
• M28: 14,010,738 km (0.093 R)
• M29: 14,382,638 km (0.099 R)
• M30: 14,757,680 km (0.084 R)
• M31: 15,262,723 km (0.119 R)
• M32: 15,305,209 km (0.084 R)
• M33: 16,074,142 km (0.111 R)
• M34: 17,206,897 km (0.092 R)
• M35: 17,693,838 km (0.065 R)
• M36: 18,455,291 km (0.068 R)
• M37: 18,817,467 km (0.048 R)
• M38: 21,654,142 km (0.082 R)
• M39: 22,227,700 km (0.083 R)
• M40: 22,468,254 km (0.117 R)
• M41: 23,146,082 km (0.118 R)
• M42: 23,536,532 km (0.1 R)
• M43: 25,119,726 km (0.115 R)
• M44: 26,431,101 km (0.069 R)
• M45: 27,609,783 km (0.092 R)
• M46: 28,023,720 km (0.11 R)
• M47: 28,231,512 km (0.075 R)
• M48: 28,491,812 km (0.066 R)
• M49: 28,544,022 km (0.116 R)
• M50: 29,383,266 km (0.073 R)
• M51: 29,488,732 km (0.07 R)
• M52: 29,858,837 km (0.084 R)
• M53: 31,624,391 km (0.104 R)
• M54: 31,732,401 km (0.116 R)
• M55: 32,546,962 km (0.112 R)
• M56: 32,656,168 km (0.116 R)
• M57: 32,984,236 km (0.059 R)
• M58: 33,093,891 km (0.059 R)
• M59: 33,203,696 km (0.089 R)
• M60: 33,313,501 km (0.086 R)
• M61: 33,919,821 km (0.068 R)
• M62: 33,975,172 km (0.111 R)
• M63: 34,030,524 km (0.065 R)
• M64: 34,864,233 km (0.112 R)
• M65: 36,381,753 km (0.075 R)
• M66: 36,721,789 km (0.045 R)
• M67: 38,438,275 km (0.06 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.8

Radius: 6.1

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 5.95 AU - 8.93 AU

Year: 14008 Days

Day: 16.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 58,813,692 km

• M1: 79,885 km (0.1 R)
• M2: 166,802 km (0.077 R)
• M3: 222,452 km (0.047 R)
• M4: 293,960 km (0.104 R)
• M5: 639,680 km (0.075 R)
• M6: 714,330 km (0.113 R)
• M7: 837,598 km (0.094 R)
• M8: 1,042,099 km (0.09 R)
• M9: 1,156,691 km (0.119 R)
• M10: 1,343,239 km (0.108 R)
• M11: 1,685,220 km (0.107 R)
• M12: 1,759,869 km (0.087 R)
• M13: 1,881,642 km (0.098 R)
• M14: 2,053,530 km (0.027 R)
• M15: 2,149,422 km (0.12 R)
• M16: 2,198,042 km (0.062 R)
• M17: 2,738,389 km (0.025 R)
• M18: 2,915,363 km (0.092 R)
• M19: 3,005,421 km (0.066 R)
• M20: 3,096,227 km (0.112 R)
• M21: 3,545,170 km (0.089 R)
• M22: 3,757,749 km (0.071 R)
• M23: 4,114,540 km (0.094 R)
• M24: 4,337,889 km (0.096 R)
• M25: 4,379,029 km (0.115 R)
• M26: 4,440,813 km (0.11 R)
• M27: 4,502,896 km (0.075 R)
• M28: 4,733,127 km (0.035 R)
• M29: 4,967,248 km (0.086 R)
• M30: 5,096,500 km (0.099 R)
• M31: 5,226,800 km (0.086 R)
• M32: 5,647,020 km (0.06 R)
• M33: 5,714,489 km (0.115 R)
• M34: 6,496,288 km (0.07 R)
• M35: 6,947,774 km (0.103 R)
• M36: 9,035,562 km (0.097 R)
• M37: 9,088,071 km (0.072 R)
• M38: 9,726,554 km (0.094 R)
• M39: 10,105,785 km (0.096 R)
• M40: 10,187,615 km (0.103 R)
• M41: 10,269,744 km (0.117 R)
• M42: 10,990,357 km (0.115 R)
• M43: 11,074,581 km (0.095 R)
• M44: 11,527,414 km (0.078 R)
• M45: 12,015,103 km (0.113 R)
• M46: 12,334,195 km (0.042 R)
• M47: 12,480,202 km (0.074 R)
• M48: 13,099,538 km (0.112 R)
• M49: 13,159,078 km (0.097 R)
• M50: 13,248,537 km (0.089 R)
• M51: 13,368,066 km (0.043 R)
• M52: 13,849,920 km (0.087 R)
• M53: 13,971,394 km (0.054 R)
• M54: 14,123,535 km (0.053 R)
• M55: 14,215,089 km (0.084 R)
• M56: 14,460,280 km (0.106 R)
• M57: 14,676,000 km (0.076 R)
• M58: 14,954,850 km (0.106 R)
• M59: 15,110,582 km (0.095 R)
• M60: 16,279,390 km (0.069 R)
• M61: 16,343,268 km (0.085 R)
• M62: 16,439,460 km (0.118 R)
• M63: 16,503,637 km (0.063 R)
• M64: 17,313,410 km (0.119 R)
• M65: 17,509,683 km (0.087 R)
• M66: 18,937,594 km (0.108 R)
• M67: 19,546,308 km (0.058 R)
• M68: 19,750,659 km (0.089 R)
• M69: 20,575,242 km (0.066 R)
• M70: 21,445,902 km (0.106 R)
• M71: 21,621,530 km (0.102 R)
• M72: 22,151,256 km (0.091 R)
• M73: 22,222,165 km (0.101 R)
• M74: 22,293,224 km (0.073 R)
• M75: 22,506,700 km (0.06 R)
• M76: 23,223,274 km (0.07 R)
• M77: 23,729,364 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 248.8

Radius: 6

Gravity: 6.91 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 10.2 AU - 10.24 AU

Year: 22552 Days

Day: 20.7 Hours

Environment

Temp: -241 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 58,813,692 km

• M1: 79,885 km (0.118 R)
• M2: 133,292 km (0.075 R)
• M3: 171,888 km (0.08 R)
• M4: 711,787 km (0.106 R)
• M5: 1,281,156 km (0.103 R)
• M6: 2,305,902 km (0.112 R)
• M7: 2,733,153 km (0.089 R)
• M8: 2,891,577 km (0.047 R)
• M9: 3,317,931 km (0.042 R)
• M10: 3,385,250 km (0.116 R)
• M11: 3,693,871 km (0.09 R)
• M12: 3,940,109 km (0.118 R)
• M13: 4,228,234 km (0.042 R)
• M14: 4,448,741 km (0.086 R)
• M15: 5,171,598 km (0.094 R)
• M16: 5,889,519 km (0.108 R)
• M17: 7,197,902 km (0.038 R)
• M18: 8,224,143 km (0.117 R)
• M19: 9,390,558 km (0.118 R)
• M20: 9,920,134 km (0.09 R)
• M21: 10,857,365 km (0.108 R)
• M22: 11,463,834 km (0.09 R)
• M23: 12,551,411 km (0.084 R)
• M24: 12,815,152 km (0.066 R)
• M25: 12,921,217 km (0.086 R)
• M26: 13,134,095 km (0.105 R)
• M27: 13,725,605 km (0.115 R)
• M28: 14,325,791 km (0.072 R)
• M29: 14,990,305 km (0.09 R)
• M30: 15,382,551 km (0.12 R)
• M31: 16,349,252 km (0.102 R)
• M32: 16,464,293 km (0.118 R)
• M33: 16,637,228 km (0.069 R)
• M34: 19,730,762 km (0.097 R)
• M35: 20,779,743 km (0.103 R)
• M36: 21,154,336 km (0.084 R)
• M37: 23,383,344 km (0.116 R)
• M38: 24,230,068 km (0.057 R)
• M39: 24,361,265 km (0.094 R)
• M40: 27,784,513 km (0.079 R)
• M41: 27,853,179 km (0.043 R)
• M42: 28,542,526 km (0.073 R)
• M43: 31,069,982 km (0.068 R)
• M44: 32,360,413 km (0.066 R)
• M45: 32,504,775 km (0.109 R)
• M46: 33,157,470 km (0.08 R)
• M47: 34,402,125 km (0.07 R)
• M48: 34,623,380 km (0.096 R)
• M49: 35,811,187 km (0.056 R)
• M50: 36,035,434 km (0.109 R)
• M51: 38,992,386 km (0.08 R)
• M52: 39,608,430 km (0.087 R)
• M53: 40,227,765 km (0.104 R)
• M54: 41,947,393 km (0.066 R)
• M55: 43,372,013 km (0.1 R)
• M56: 46,024,982 km (0.078 R)
• M57: 46,268,677 km (0.036 R)
• M58: 49,061,220 km (0.11 R)
• M59: 49,892,984 km (0.109 R)
• M60: 51,570,276 km (0.069 R)
• M61: 51,654,649 km (0.08 R)
• M62: 53,095,575 km (0.11 R)
• M63: 54,292,059 km (0.075 R)
• M64: 54,635,686 km (0.091 R)
• M65: 55,066,079 km (0.069 R)
• M66: 55,497,519 km (0.049 R)
• M67: 56,277,223 km (0.09 R)
• M68: 56,450,906 km (0.117 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 374 - 18,610 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit