| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -86 | 2407770 | 1880-02-24 | 2407758 | 1880-02-12 | 12 | GuL, 1918, 1.1 | |
| -85 | 2408203 | 1881-05-02 | 2408169 | 1881-03-29 | 34 | GuL, 1918, 1.1 | |
| -82 | 2409475 | 1884-10-25 | 2409404 | 1884-08-15 | 71 | GuL, 1918, 1.1 | |
| -81 | 2409893 | 1885-12-17 | 2409815 | 1885-09-30 | 78 | GuL, 1918, 1.1 | |
| -80 | 2410315 | 1887-02-12 | 2410227 | 1886-11-16 | 88 | GuL, 1918, 1.1 | |
| -79 | 2410745 | 1888-04-17 | 2410638 | 1888-01-01 | 107 | GuL, 1918, 1.1 | |
| -78 | 2411139 | 1889-05-16 | 2411050 | 1889-02-16 | 89 | GuL, 1918, 1.1 | |
| -75 | 2412327 | 1892-08-16 | 2412284 | 1892-07-04 | 43 | GuL, 1918, 1.1 | |
| -69 | 2414776 | 1899-05-01 | 2414753 | 1899-04-08 | 23 | GuL, 1918, 1.1 | |
| -68 | 2415154 | 1900-05-14 | 2415165 | 1900-05-25 | -11 | GuL, 1918, 1.1 | |
| -64 | 9.5 | 2416787 | 1904-11-02 | 2416811 | 1904-11-26 | -24 | AAVSO |
| -63 | 9.0 | 2417213 | 1906-01-02 | 2417222 | 1906-01-11 | -9 | AAVSO |
| -62 | 9.0 | 2417616 | 1907-02-09 | 2417634 | 1907-02-27 | -18 | AAVSO |
| -61 | 8.9 | 2418026 | 1908-03-25 | 2418045 | 1908-04-13 | -19 | AAVSO |
| -60 | 8.7 | 2418429 | 1909-05-02 | 2418457 | 1909-05-30 | -28 | AAVSO |
| -59 | 2418845 | 1910-06-22 | 2418868 | 1910-07-15 | -23 | AAVSO | |
| -58 | 9.1 | 2419252 | 1911-08-03 | 2419280 | 1911-08-31 | -28 | AAVSO |
| -57 | 8.2 | 2419667 | 1912-09-21 | 2419691 | 1912-10-15 | -24 | SVO |
| -56 | 8.4 | 2420080 | 1913-11-08 | 2420102 | 1913-11-30 | -22 | SVO |
| -55 | 9.1 | 2420495 | 1914-12-28 | 2420514 | 1915-01-16 | -19 | SVO |
| -54 | 8.5 | 2420910 | 1916-02-16 | 2420925 | 1916-03-02 | -15 | SVO |
| -53 | 8.8 | 2421333 | 1917-04-14 | 2421337 | 1917-04-18 | -4 | AAVSO |
| -52 | 9.0 | 2421753 | 1918-06-08 | 2421748 | 1918-06-03 | 5 | AAVSO |
| -51 | 2422166 | 1919-07-26 | 2422160 | 1919-07-20 | 6 | AAVSO | |
| -50 | 8.5 | 2422592 | 1920-09-24 | 2422571 | 1920-09-03 | 21 | SVO |
| -49 | 8.8 | 2423011 | 1921-11-17 | 2422983 | 1921-10-20 | 28 | SVO |
| -48 | 8.6 | 2423436 | 1923-01-16 | 2423394 | 1922-12-05 | 42 | AAVSO |
| -47 | 8.6 | 2423853 | 1924-03-08 | 2423806 | 1924-01-21 | 47 | SVO |
| -46 | 8.2 | 2424262 | 1925-04-21 | 2424217 | 1925-03-07 | 45 | AAVSO |
| -45 | 2424688 | 1926-06-21 | 2424629 | 1926-04-23 | 59 | AAVSO | |
| -44 | 2425098 | 1927-08-05 | 2425040 | 1927-06-08 | 58 | AAVSO | |
| -43 | 8.9 | 2425505 | 1928-09-15 | 2425452 | 1928-07-24 | 53 | SVO |
| -42 | 8.7 | 2425917 | 1929-11-01 | 2425863 | 1929-09-08 | 54 | SVO |
| -41 | 8.5 | 2426321 | 1930-12-10 | 2426275 | 1930-10-25 | 46 | SVO |
| -40 | 8.5 | 2426722 | 1932-01-15 | 2426686 | 1931-12-10 | 36 | SVO |
| -39 | 8.7 | 2427122 | 1933-02-18 | 2427098 | 1933-01-25 | 24 | SVO |
| -38 | 8.4 | 2427526 | 1934-03-29 | 2427509 | 1934-03-12 | 17 | AAVSO |
| -37 | 8.7 | 2427933 | 1935-05-10 | 2427921 | 1935-04-28 | 12 | AAVSO |
| -36 | 8.4 | 2428318 | 1936-05-29 | 2428332 | 1936-06-12 | -14 | SVO |
| -35 | 2428739 | 1937-07-24 | 2428744 | 1937-07-29 | -5 | AAVSO | |
| -34 | 2429138 | 1938-08-27 | 2429155 | 1938-09-13 | -17 | AAVSO | |
| -33 | 8.5 | 2429547 | 1939-10-10 | 2429567 | 1939-10-30 | -20 | SVO |
| -32 | 8.6 | 2429955 | 1940-11-21 | 2429978 | 1940-12-14 | -23 | SVO |
| -31 | 9.2 | 2430365 | 1942-01-05 | 2430390 | 1942-01-30 | -25 | SVO |
| -30 | 8.9 | 2430786 | 1943-03-02 | 2430801 | 1943-03-17 | -15 | SVO |
| -29 | 8.9 | 2431174 | 1944-03-24 | 2431213 | 1944-05-02 | -39 | AAVSO |
| -28 | 9.3 | 2431584 | 1945-05-08 | 2431624 | 1945-06-17 | -40 | AAVSO |
| -27 | 9.2 | 2432004 | 1946-07-02 | 2432036 | 1946-08-03 | -32 | AAVSO |
| -26 | 2432412 | 1947-08-14 | 2432447 | 1947-09-18 | -35 | AAVSO | |
| -25 | 9.0 | 2432851 | 1948-10-26 | 2432859 | 1948-11-03 | -8 | SVO |
| -24 | 8.8 | 2433253 | 1949-12-02 | 2433270 | 1949-12-19 | -17 | SVO |
| -23 | 9.2 | 2433673 | 1951-01-26 | 2433682 | 1951-02-04 | -9 | AAVSO |
| -22 | 9.1 | 2434069 | 1952-02-26 | 2434093 | 1952-03-21 | -24 | SVO |
| -21 | 9.0 | 2434453 | 1953-03-16 | 2434505 | 1953-05-07 | -52 | SVO |
| -20 | 9.0 | 2434856 | 1954-04-23 | 2434916 | 1954-06-22 | -60 | AAVSO |
| -19 | 9.2 | 2435253 | 1955-05-25 | 2435328 | 1955-08-08 | -75 | AAVSO |
| -18 | 2435644 | 1956-06-19 | 2435739 | 1956-09-22 | -95 | AAVSO | |
| -17 | 2436026 | 1957-07-06 | 2436151 | 1957-11-08 | -125 | AAVSO | |
| -16 | 2436423 | 1958-08-07 | 2436562 | 1958-12-24 | -139 | AAVSO | |
| -15 | 8.3 | 2436837 | 1959-09-25 | 2436974 | 1960-02-09 | -137 | SVO |
| -14 | 8.5 | 2437245 | 1960-11-06 | 2437385 | 1961-03-26 | -140 | SVO |
| -13 | 9.2 | 2437655 | 1961-12-21 | 2437797 | 1962-05-12 | -142 | AAVSO |
| -12 | 9.4 | 2438077 | 1963-02-16 | 2438208 | 1963-06-27 | -131 | AAVSO |
| -11 | 9.6 | 2438510 | 1964-04-24 | 2438620 | 1964-08-12 | -110 | AAVSO |
| -10 | 9.0 | 2438921 | 1965-06-09 | 2439031 | 1965-09-27 | -110 | AAVSO |
| -9 | 2439338 | 1966-07-31 | 2439443 | 1966-11-13 | -105 | AAVSO | |
| -8 | 8.5 | 2439739 | 1967-09-05 | 2439854 | 1967-12-29 | -115 | SVO |
| -7 | 9.0 | 2440178 | 1968-11-17 | 2440266 | 1969-02-13 | -88 | SVO |
| -6 | 8.9 | 2440611 | 1970-01-24 | 2440677 | 1970-03-31 | -66 | SVO |
| -5 | 8.9 | 2441036 | 1971-03-25 | 2441089 | 1971-05-17 | -53 | SVO |
| -4 | 9.3 | 2441431 | 1972-04-23 | 2441500 | 1972-07-01 | -69 | AAVSO |
| -3 | 2441906 | 1973-08-11 | 2441912 | 1973-08-17 | -6 | AAVSO | |
| -2 | 8.7 | 2442316 | 1974-09-25 | 2442323 | 1974-10-02 | -7 | SVO |
| -1 | 8.5 | 2442737 | 1975-11-20 | 2442735 | 1975-11-18 | 2 | SVO |
| 0 | 8.5 | 2443160 | 1977-01-16 | 2443146 | 1977-01-02 | 14 | SVO |
| 1 | 8.6 | 2443591 | 1978-03-23 | 2443558 | 1978-02-18 | 33 | SVO |
| 2 | 8.3 | 2444015 | 1979-05-21 | 2443969 | 1979-04-05 | 46 | AAVSO |
| 3 | 8.4 | 2444435 | 1980-07-14 | 2444381 | 1980-05-21 | 54 | AAVSO |
| 4 | 9.0 | 2444843 | 1981-08-26 | 2444792 | 1981-07-06 | 51 | SVO |
| 5 | 8.8 | 2445263 | 1982-10-20 | 2445204 | 1982-08-22 | 59 | SVO |
| 6 | 8.8 | 2445673 | 1983-12-04 | 2445615 | 1983-10-07 | 58 | SVO |
| 7 | 8.6 | 2446083 | 1985-01-17 | 2446027 | 1984-11-22 | 56 | SVO |
| 8 | 8.9 | 2446488 | 1986-02-26 | 2446438 | 1986-01-07 | 50 | SVO |
| 9 | 8.7 | 2446897 | 1987-04-11 | 2446850 | 1987-02-23 | 47 | SVO |
| 10 | 8.5 | 2447309 | 1988-05-27 | 2447261 | 1988-04-09 | 48 | SVO |
| 11 | 2447711 | 1989-07-03 | 2447673 | 1989-05-26 | 38 | AAVSO | |
| 12 | 9.0 | 2448114 | 1990-08-10 | 2448084 | 1990-07-11 | 30 | SVO |
| 13 | 8.9 | 2448515 | 1991-09-15 | 2448496 | 1991-08-27 | 19 | SVO |
| 14 | 9.2 | 2448921 | 1992-10-25 | 2448907 | 1992-10-11 | 14 | SVO |
| 15 | 8.8 | 2449330 | 1993-12-08 | 2449319 | 1993-11-27 | 11 | SVO |
| 16 | 9.0 | 2449751 | 1995-02-02 | 2449730 | 1995-01-12 | 21 | SVO |
| 17 | 8.8 | 2450164 | 1996-03-21 | 2450142 | 1996-02-28 | 22 | SVO |
| 18 | 8.6 | 2450591 | 1997-05-22 | 2450553 | 1997-04-14 | 38 | SVO |
| 19 | 2450996 | 1998-07-01 | 2450965 | 1998-05-31 | 31 | AAVSO | |
| 20 | 2451408 | 1999-08-17 | 2451376 | 1999-07-16 | 32 | AAVSO | |
| 21 | 8.5 | 2451804 | 2000-09-16 | 2451788 | 2000-08-31 | 16 | SVO |
| 22 | 9.3 | 2452237 | 2001-11-23 | 2452199 | 2001-10-16 | 38 | SVO |
| 23 | 9.1 | 2452651 | 2003-01-11 | 2452611 | 2002-12-02 | 40 | SVO |
| 24 | 8.9 | 2453057 | 2004-02-21 | 2453022 | 2004-01-17 | 35 | SVO |
| 25 | 8.9 | 2453465 | 2005-04-04 | 2453434 | 2005-03-04 | 31 | SVO |
| 26 | 2453901 | 2006-06-14 | 2453845 | 2006-04-19 | 56 | AAVSO | |
| 27 | 2454299 | 2007-07-17 | 2454257 | 2007-06-05 | 42 | AAVSO | |
| 28 | 8.2 | 2454697 | 2008-08-18 | 2454668 | 2008-07-20 | 29 | SVO |
| 29 | 9.0 | 2455112 | 2009-10-07 | 2455080 | 2009-09-05 | 32 | SVO |
| 30 | 9.2 | 2455543 | 2010-12-12 | 2455491 | 2010-10-21 | 52 | SVO |
| 31 | 9.3 | 2455971 | 2012-02-13 | 2455903 | 2011-12-07 | 68 | AAVSO |
| 32 | 9.1 | 2456352 | 2013-02-28 | 2456314 | 2013-01-21 | 38 | SVO |
| 33 | 9.2 | 2456756 | 2014-04-08 | 2456726 | 2014-03-09 | 30 | SVO |
| 34 | 8.9 | 2457167 | 2015-05-24 | 2457137 | 2015-04-24 | 30 | SVO |
| 35 | 2457593 | 2016-07-23 | 2457549 | 2016-06-09 | 44 | AAVSO | |
| 36 | 8.4 | 2457966 | 2017-07-31 | 2457960 | 2017-07-25 | 6 | SVO |
| 37 | 2458363 | 2018-09-01 | 2458372 | 2018-09-10 | -9 | SVO | |
| 38 | 8.9 | 2458771 | 2019-10-14 | 2458783 | 2019-10-26 | -12 | SVO |
| 39 | 8.9 | 2459175 | 2020-11-21 | 2459195 | 2020-12-11 | -20 | SVO |
| 40 | 8.8 | 2459579 | 2021-12-30 | 2459606 | 2022-01-26 | -27 | SVO |
| E | Cycle number from the GCVS4 epoch. |
| Mag | Magnitude at maximum. |
| O (JD) | Julian date at observed time for maximum. |
| O (Dat) | Same as above, expressed as date. |
| C (JD) | Julian date at calculated time for maximum with elements from GCVS4. |
| C (Dat) | Same as above, expressed as date. |
| O-C | O (JD) minus C (JD). |
| Sorce | Datasource for the maxima. |