| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -58 | 2415295 | 1900-10-02 | 2415314 | 1900-10-21 | -19 | AnHar, 1909, vol 55, p 95 | |
| -56 | 2416260 | 1903-05-25 | 2416320 | 1903-07-24 | -60 | AnHar, 1909, vol 55, p 95 | |
| -55 | 9.8 | 2416759 | 1904-10-05 | 2416823 | 1904-12-08 | -64 | AAVSO |
| -54 | 2417263 | 1906-02-21 | 2417326 | 1906-04-25 | -63 | AAVSO | |
| -53 | 9.5 | 2417834 | 1907-09-15 | 2417829 | 1907-09-10 | 5 | AAVSO |
| -52 | 2418299 | 1908-12-23 | 2418332 | 1909-01-25 | -33 | AAVSO | |
| -51 | 2418799 | 1910-05-07 | 2418835 | 1910-06-12 | -36 | AAVSO | |
| -50 | 9.7 | 2419316 | 1911-10-06 | 2419338 | 1911-10-28 | -22 | AAVSO |
| -49 | 12.5 | 2419847 | 1913-03-20 | 2419840 | 1913-03-13 | 7 | AAVSO |
| -48 | 13.1 | 2420355 | 1914-08-10 | 2420343 | 1914-07-29 | 12 | AAVSO |
| -47 | 11.6 | 2420827 | 1915-11-25 | 2420846 | 1915-12-14 | -19 | SVO |
| -46 | 13.1 | 2421373 | 1917-05-24 | 2421349 | 1917-04-30 | 24 | AAVSO |
| -45 | 12.2 | 2421857 | 1918-09-20 | 2421852 | 1918-09-15 | 5 | SVO |
| -44 | 12.0 | 2422409 | 1920-03-25 | 2422355 | 1920-01-31 | 54 | AAVSO |
| -43 | 11.6 | 2422874 | 1921-07-03 | 2422858 | 1921-06-17 | 16 | SVO |
| -42 | 11.7 | 2423369 | 1922-11-10 | 2423361 | 1922-11-02 | 8 | SVO |
| -41 | 11.2 | 2423897 | 1924-04-21 | 2423864 | 1924-03-19 | 33 | AAVSO |
| -40 | 12.4 | 2424401 | 1925-09-07 | 2424366 | 1925-08-03 | 35 | AAVSO |
| -39 | 12.3 | 2424899 | 1927-01-18 | 2424869 | 1926-12-19 | 30 | AAVSO |
| -38 | 12.6 | 2425420 | 1928-06-22 | 2425372 | 1928-05-05 | 48 | AAVSO |
| -37 | 2425926 | 1929-11-10 | 2425875 | 1929-09-20 | 51 | AAVSO | |
| -36 | 2426416 | 1931-03-15 | 2426378 | 1931-02-05 | 38 | AAVSO | |
| -35 | 11.4 | 2426919 | 1932-07-30 | 2426881 | 1932-06-22 | 38 | AAVSO |
| -34 | 2427417 | 1933-12-10 | 2427384 | 1933-11-07 | 33 | AAVSO | |
| -33 | 12.0 | 2427897 | 1935-04-04 | 2427887 | 1935-03-25 | 10 | AAVSO |
| -32 | 12.0 | 2428416 | 1936-09-04 | 2428390 | 1936-08-09 | 26 | AAVSO |
| -31 | 12.4 | 2428926 | 1938-01-27 | 2428893 | 1937-12-25 | 33 | AAVSO |
| -30 | 10.9 | 2429414 | 1939-05-30 | 2429395 | 1939-05-11 | 19 | AAVSO |
| -29 | 10.6 | 2429917 | 1940-10-14 | 2429898 | 1940-09-25 | 19 | AAVSO |
| -28 | 2430408 | 1942-02-17 | 2430401 | 1942-02-10 | 7 | AAVSO | |
| -27 | 11.6 | 2430957 | 1943-08-20 | 2430904 | 1943-06-28 | 53 | AAVSO |
| -25 | 10.4 | 2431923 | 1946-04-12 | 2431910 | 1946-03-30 | 13 | AAVSO |
| -24 | 10.7 | 2432410 | 1947-08-12 | 2432413 | 1947-08-15 | -3 | SVO |
| -23 | 10.9 | 2432902 | 1948-12-16 | 2432916 | 1948-12-30 | -14 | SVO |
| -22 | 10.9 | 2433411 | 1950-05-09 | 2433419 | 1950-05-17 | -8 | AAVSO |
| -21 | 11.0 | 2433921 | 1951-10-01 | 2433921 | 1951-10-01 | 0 | SVO |
| -20 | 10.8 | 2434428 | 1953-02-19 | 2434424 | 1953-02-15 | 4 | AAVSO |
| -19 | 10.2 | 2434930 | 1954-07-06 | 2434927 | 1954-07-03 | 3 | AAVSO |
| -18 | 10.9 | 2435415 | 1955-11-03 | 2435430 | 1955-11-18 | -15 | SVO |
| -17 | 11.6 | 2435939 | 1957-04-10 | 2435933 | 1957-04-04 | 6 | AAVSO |
| -16 | 10.9 | 2436450 | 1958-09-03 | 2436436 | 1958-08-20 | 14 | SVO |
| -15 | 11.3 | 2436947 | 1960-01-13 | 2436939 | 1960-01-05 | 8 | AAVSO |
| -14 | 10.4 | 2437449 | 1961-05-29 | 2437442 | 1961-05-22 | 7 | AAVSO |
| -13 | 10.9 | 2437957 | 1962-10-19 | 2437945 | 1962-10-07 | 12 | SVO |
| -12 | 11.1 | 2438468 | 1964-03-13 | 2438448 | 1964-02-22 | 20 | SVO |
| -11 | 10.7 | 2438961 | 1965-07-19 | 2438950 | 1965-07-08 | 11 | SVO |
| -10 | 10.8 | 2439445 | 1966-11-15 | 2439453 | 1966-11-23 | -8 | SVO |
| -9 | 11.7 | 2439957 | 1968-04-10 | 2439956 | 1968-04-09 | 1 | AAVSO |
| -8 | 12.1 | 2440466 | 1969-09-01 | 2440459 | 1969-08-25 | 7 | SVO |
| -7 | 12.2 | 2440946 | 1970-12-25 | 2440962 | 1971-01-10 | -16 | SVO |
| -6 | 12.8 | 2441448 | 1972-05-10 | 2441465 | 1972-05-27 | -17 | SVO |
| -5 | 12.9 | 2441976 | 1973-10-20 | 2441968 | 1973-10-12 | 8 | SVO |
| -4 | 12.7 | 2442452 | 1975-02-08 | 2442471 | 1975-02-27 | -19 | SVO |
| -3 | 12.8 | 2442921 | 1976-05-22 | 2442974 | 1976-07-14 | -53 | SVO |
| -2 | 12.5 | 2443468 | 1977-11-20 | 2443476 | 1977-11-28 | -8 | AAVSO |
| -1 | 13.5 | 2443970 | 1979-04-06 | 2443979 | 1979-04-15 | -9 | AAVSO |
| 0 | 13.3 | 2444485 | 1980-09-02 | 2444482 | 1980-08-30 | 3 | SVO |
| 1 | 12.7 | 2444957 | 1981-12-18 | 2444985 | 1982-01-15 | -28 | SVO |
| 2 | 12.9 | 2445437 | 1983-04-12 | 2445488 | 1983-06-02 | -51 | AAVSO |
| 3 | 13.3 | 2445967 | 1984-09-23 | 2445991 | 1984-10-17 | -24 | AAVSO |
| 4 | 13.0 | 2446438 | 1986-01-07 | 2446494 | 1986-03-04 | -56 | SVO |
| 5 | 13.3 | 2446959 | 1987-06-12 | 2446997 | 1987-07-20 | -38 | SVO |
| 6 | 12.9 | 2447459 | 1988-10-24 | 2447500 | 1988-12-04 | -41 | SVO |
| 7 | 2447943 | 1990-02-20 | 2448003 | 1990-04-21 | -60 | AAVSO | |
| 8 | 12.9 | 2448452 | 1991-07-14 | 2448505 | 1991-09-05 | -53 | SVO |
| 9 | 2448947 | 1992-11-20 | 2449008 | 1993-01-20 | -61 | AAVSO | |
| 10 | 13.0 | 2449484 | 1994-05-11 | 2449511 | 1994-06-07 | -27 | SVO |
| 11 | 12.6 | 2449977 | 1995-09-16 | 2450014 | 1995-10-23 | -37 | SVO |
| 12 | 2450474 | 1997-01-25 | 2450517 | 1997-03-09 | -43 | AAVSO | |
| 13 | 13.1 | 2450979 | 1998-06-14 | 2451020 | 1998-07-25 | -41 | SVO |
| 14 | 12.5 | 2451508 | 1999-11-25 | 2451523 | 1999-12-10 | -15 | SVO |
| 15 | 2451997 | 2001-03-28 | 2452026 | 2001-04-26 | -29 | AAVSO | |
| 16 | 11.6 | 2452505 | 2002-08-18 | 2452529 | 2002-09-11 | -24 | SVO |
| 17 | 11.7 | 2453008 | 2004-01-03 | 2453031 | 2004-01-26 | -23 | SVO |
| 18 | 12.0 | 2453531 | 2005-06-09 | 2453534 | 2005-06-12 | -3 | SVO |
| 19 | 11.3 | 2454024 | 2006-10-15 | 2454037 | 2006-10-28 | -13 | SVO |
| 20 | 11.6 | 2454539 | 2008-03-13 | 2454540 | 2008-03-14 | -1 | SVO |
| 21 | 12.2 | 2455062 | 2009-08-18 | 2455043 | 2009-07-30 | 19 | SVO |
| 22 | 11.6 | 2455570 | 2011-01-08 | 2455546 | 2010-12-15 | 24 | SVO |
| 23 | 10.7 | 2456076 | 2012-05-28 | 2456049 | 2012-05-01 | 27 | SVO |
| 24 | 12.4 | 2456596 | 2013-10-30 | 2456552 | 2013-09-16 | 44 | SVO |
| 25 | 12.3 | 2457124 | 2015-04-11 | 2457055 | 2015-02-01 | 69 | SVO |
| 26 | 12.3 | 2457609 | 2016-08-08 | 2457558 | 2016-06-18 | 51 | SVO |
| 27 | 12.0 | 2458119 | 2017-12-31 | 2458060 | 2017-11-02 | 59 | SVO |
| 28 | 12.3 | 2458611 | 2019-05-07 | 2458563 | 2019-03-20 | 48 | SVO |
| 29 | 12.1 | 2459115 | 2020-09-22 | 2459066 | 2020-08-04 | 49 | SVO |
| 30 | 12.8 | 2459613 | 2022-02-02 | 2459569 | 2021-12-20 | 44 | 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. |