| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -54 | 2417331 | 1906-04-30 | 2417283 | 1906-03-13 | 48 | GuL, 1918, 1.1 | |
| -53 | 2417803 | 1907-08-15 | 2417752 | 1907-06-25 | 51 | GuL, 1918, 1.1 | |
| -52 | 2418280 | 1908-12-04 | 2418221 | 1908-10-06 | 59 | SVO | |
| -48 | 2420152 | 1914-01-19 | 2420096 | 1913-11-24 | 56 | SVO | |
| -45 | 2421530 | 1917-10-28 | 2421502 | 1917-09-30 | 28 | SVO | |
| -44 | 2422009 | 1919-02-19 | 2421971 | 1919-01-12 | 38 | SVO | |
| -42 | 2422940 | 1921-09-07 | 2422909 | 1921-08-07 | 31 | SVO | |
| -41 | 2423390 | 1922-12-01 | 2423378 | 1922-11-19 | 12 | SVO | |
| -40 | 9.5 | 2423865 | 1924-03-20 | 2423846 | 1924-03-01 | 19 | AAVSO |
| -39 | 2424325 | 1925-06-23 | 2424315 | 1925-06-13 | 10 | AAVSO | |
| -38 | 9.0 | 2424787 | 1926-09-28 | 2424784 | 1926-09-25 | 3 | AAVSO |
| -37 | 9.6 | 2425256 | 1928-01-10 | 2425253 | 1928-01-07 | 3 | AAVSO |
| -36 | 9.8 | 2425746 | 1929-05-14 | 2425721 | 1929-04-19 | 25 | AAVSO |
| -35 | 9.5 | 2426209 | 1930-08-20 | 2426190 | 1930-08-01 | 19 | AAVSO |
| -34 | 10.3 | 2426667 | 1931-11-21 | 2426659 | 1931-11-13 | 8 | SVO |
| -33 | 9.5 | 2427141 | 1933-03-09 | 2427128 | 1933-02-24 | 13 | SVO |
| -32 | 9.7 | 2427605 | 1934-06-16 | 2427597 | 1934-06-08 | 8 | SVO |
| -31 | 9.6 | 2428065 | 1935-09-19 | 2428065 | 1935-09-19 | 0 | AAVSO |
| -30 | 9.5 | 2428527 | 1936-12-24 | 2428534 | 1936-12-31 | -7 | SVO |
| -29 | 9.2 | 2428971 | 1938-03-13 | 2429003 | 1938-04-14 | -32 | SVO |
| -28 | 2429462 | 1939-07-17 | 2429472 | 1939-07-27 | -10 | AAVSO | |
| -27 | 9.9 | 2429922 | 1940-10-19 | 2429941 | 1940-11-07 | -19 | SVO |
| -26 | 9.6 | 2430386 | 1942-01-26 | 2430409 | 1942-02-18 | -23 | SVO |
| -25 | 9.0 | 2430864 | 1943-05-19 | 2430878 | 1943-06-02 | -14 | SVO |
| -24 | 9.3 | 2431331 | 1944-08-28 | 2431347 | 1944-09-13 | -16 | AAVSO |
| -23 | 9.5 | 2431780 | 1945-11-20 | 2431816 | 1945-12-26 | -36 | SVO |
| -22 | 9.3 | 2432274 | 1947-03-29 | 2432284 | 1947-04-08 | -10 | SVO |
| -21 | 2432737 | 1948-07-04 | 2432753 | 1948-07-20 | -16 | AAVSO | |
| -20 | 8.8 | 2433227 | 1949-11-06 | 2433222 | 1949-11-01 | 5 | SVO |
| -19 | 9.7 | 2433693 | 1951-02-15 | 2433691 | 1951-02-13 | 2 | SVO |
| -18 | 9.6 | 2434172 | 1952-06-08 | 2434160 | 1952-05-27 | 12 | SVO |
| -17 | 8.8 | 2434633 | 1953-09-12 | 2434628 | 1953-09-07 | 5 | AAVSO |
| -16 | 11.2 | 2435096 | 1954-12-19 | 2435097 | 1954-12-20 | -1 | SVO |
| -15 | 9.3 | 2435561 | 1956-03-28 | 2435566 | 1956-04-02 | -5 | SVO |
| -14 | 2436010 | 1957-06-20 | 2436035 | 1957-07-15 | -25 | AAVSO | |
| -13 | 9.2 | 2436471 | 1958-09-24 | 2436504 | 1958-10-27 | -33 | AAVSO |
| -12 | 9.7 | 2436949 | 1960-01-15 | 2436972 | 1960-02-07 | -23 | SVO |
| -11 | 9.6 | 2437423 | 1961-05-03 | 2437441 | 1961-05-21 | -18 | SVO |
| -10 | 9.2 | 2437897 | 1962-08-20 | 2437910 | 1962-09-02 | -13 | SVO |
| -9 | 9.1 | 2438339 | 1963-11-05 | 2438379 | 1963-12-15 | -40 | SVO |
| -8 | 9.4 | 2438804 | 1965-02-12 | 2438847 | 1965-03-27 | -43 | SVO |
| -7 | 9.1 | 2439258 | 1966-05-12 | 2439316 | 1966-07-09 | -58 | SVO |
| -6 | 9.6 | 2439712 | 1967-08-09 | 2439785 | 1967-10-21 | -73 | SVO |
| -5 | 9.3 | 2440206 | 1968-12-15 | 2440254 | 1969-02-01 | -48 | SVO |
| -4 | 9.3 | 2440662 | 1970-03-16 | 2440723 | 1970-05-16 | -61 | SVO |
| -3 | 2441137 | 1971-07-04 | 2441191 | 1971-08-27 | -54 | AAVSO | |
| -2 | 9.6 | 2441606 | 1972-10-15 | 2441660 | 1972-12-08 | -54 | AAVSO |
| -1 | 9.8 | 2442058 | 1974-01-10 | 2442129 | 1974-03-22 | -71 | SVO |
| 0 | 9.2 | 2442520 | 1975-04-17 | 2442598 | 1975-07-04 | -78 | SVO |
| 1 | 10.5 | 2442984 | 1976-07-24 | 2443067 | 1976-10-15 | -83 | AAVSO |
| 2 | 8.8 | 2443470 | 1977-11-22 | 2443535 | 1978-01-26 | -65 | SVO |
| 3 | 10.5 | 2443953 | 1979-03-20 | 2444004 | 1979-05-10 | -51 | SVO |
| 4 | 9.8 | 2444443 | 1980-07-22 | 2444473 | 1980-08-21 | -30 | AAVSO |
| 5 | 10.6 | 2444905 | 1981-10-27 | 2444942 | 1981-12-03 | -37 | SVO |
| 6 | 9.1 | 2445386 | 1983-02-20 | 2445410 | 1983-03-16 | -24 | SVO |
| 7 | 10.0 | 2445860 | 1984-06-08 | 2445879 | 1984-06-27 | -19 | SVO |
| 8 | 9.6 | 2446348 | 1985-10-09 | 2446348 | 1985-10-09 | 0 | SVO |
| 9 | 9.1 | 2446827 | 1987-01-31 | 2446817 | 1987-01-21 | 10 | SVO |
| 10 | 9.8 | 2447307 | 1988-05-25 | 2447286 | 1988-05-04 | 21 | SVO |
| 11 | 8.9 | 2447798 | 1989-09-28 | 2447754 | 1989-08-15 | 44 | SVO |
| 12 | 10.0 | 2448274 | 1991-01-17 | 2448223 | 1990-11-27 | 51 | SVO |
| 13 | 9.6 | 2448763 | 1992-05-20 | 2448692 | 1992-03-10 | 71 | SVO |
| 14 | 8.9 | 2449228 | 1993-08-28 | 2449161 | 1993-06-22 | 67 | SVO |
| 15 | 10.3 | 2449690 | 1994-12-03 | 2449630 | 1994-10-04 | 60 | SVO |
| 16 | 9.3 | 2450149 | 1996-03-06 | 2450098 | 1996-01-15 | 51 | SVO |
| 17 | 9.8 | 2450629 | 1997-06-29 | 2450567 | 1997-04-28 | 62 | SVO |
| 18 | 10.2 | 2451096 | 1998-10-09 | 2451036 | 1998-08-10 | 60 | SVO |
| 19 | 8.6 | 2451545 | 2000-01-01 | 2451505 | 1999-11-22 | 40 | SVO |
| 20 | 11.3 | 2452012 | 2001-04-12 | 2451973 | 2001-03-04 | 39 | SVO |
| 21 | 2452465 | 2002-07-09 | 2452442 | 2002-06-16 | 23 | AAVSO | |
| 22 | 10.4 | 2452945 | 2003-11-01 | 2452911 | 2003-09-28 | 34 | SVO |
| 23 | 9.5 | 2453395 | 2005-01-24 | 2453380 | 2005-01-09 | 15 | SVO |
| 24 | 9.4 | 2453862 | 2006-05-06 | 2453849 | 2006-04-23 | 13 | SVO |
| 25 | 9.4 | 2454327 | 2007-08-14 | 2454317 | 2007-08-04 | 10 | SVO |
| 26 | 9.7 | 2454796 | 2008-11-25 | 2454786 | 2008-11-15 | 10 | SVO |
| 27 | 10.1 | 2455273 | 2010-03-17 | 2455255 | 2010-02-27 | 18 | SVO |
| 28 | 10.0 | 2455744 | 2011-07-01 | 2455724 | 2011-06-11 | 20 | SVO |
| 29 | 8.7 | 2456198 | 2012-09-27 | 2456193 | 2012-09-22 | 5 | SVO |
| 30 | 10.6 | 2456669 | 2014-01-11 | 2456661 | 2014-01-03 | 8 | SVO |
| 31 | 9.7 | 2457145 | 2015-05-02 | 2457130 | 2015-04-17 | 15 | SVO |
| 32 | 10.0 | 2457589 | 2016-07-19 | 2457599 | 2016-07-29 | -10 | SVO |
| 33 | 9.6 | 2458066 | 2017-11-08 | 2458068 | 2017-11-10 | -2 | SVO |
| 34 | 9.6 | 2458541 | 2019-02-26 | 2458536 | 2019-02-21 | 5 | SVO |
| 35 | 8.9 | 2459006 | 2020-06-05 | 2459005 | 2020-06-04 | 1 | SVO |
| 36 | 10.2 | 2459479 | 2021-09-21 | 2459474 | 2021-09-16 | 5 | 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. |