| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -88 | 2417331 | 1906-04-30 | 2417224 | 1906-01-13 | 107 | GuL, 1918, 1.1 | |
| -87 | 2417803 | 1907-08-15 | 2417694 | 1907-04-28 | 109 | GuL, 1918, 1.1 | |
| -86 | 2418280 | 1908-12-04 | 2418163 | 1908-08-09 | 117 | SVO | |
| -82 | 2420152 | 1914-01-19 | 2420041 | 1913-09-30 | 111 | SVO | |
| -79 | 2421530 | 1917-10-28 | 2421450 | 1917-08-09 | 80 | SVO | |
| -78 | 2422009 | 1919-02-19 | 2421919 | 1918-11-21 | 90 | SVO | |
| -76 | 2422940 | 1921-09-07 | 2422858 | 1921-06-17 | 82 | SVO | |
| -75 | 2423390 | 1922-12-01 | 2423328 | 1922-09-30 | 62 | SVO | |
| -74 | 9.5 | 2423865 | 1924-03-20 | 2423797 | 1924-01-12 | 68 | AAVSO |
| -73 | 2424325 | 1925-06-23 | 2424267 | 1925-04-26 | 58 | AAVSO | |
| -72 | 9.0 | 2424787 | 1926-09-28 | 2424736 | 1926-08-08 | 51 | AAVSO |
| -71 | 9.6 | 2425256 | 1928-01-10 | 2425206 | 1927-11-21 | 50 | AAVSO |
| -70 | 9.8 | 2425746 | 1929-05-14 | 2425675 | 1929-03-04 | 71 | AAVSO |
| -69 | 9.5 | 2426209 | 1930-08-20 | 2426145 | 1930-06-17 | 64 | AAVSO |
| -68 | 10.3 | 2426667 | 1931-11-21 | 2426614 | 1931-09-29 | 53 | SVO |
| -67 | 9.5 | 2427141 | 1933-03-09 | 2427084 | 1933-01-11 | 57 | SVO |
| -66 | 9.7 | 2427605 | 1934-06-16 | 2427553 | 1934-04-25 | 52 | SVO |
| -65 | 9.6 | 2428065 | 1935-09-19 | 2428023 | 1935-08-08 | 42 | AAVSO |
| -64 | 9.5 | 2428527 | 1936-12-24 | 2428492 | 1936-11-19 | 35 | SVO |
| -63 | 9.2 | 2428971 | 1938-03-13 | 2428962 | 1938-03-04 | 9 | SVO |
| -62 | 2429462 | 1939-07-17 | 2429431 | 1939-06-16 | 31 | AAVSO | |
| -61 | 9.9 | 2429922 | 1940-10-19 | 2429901 | 1940-09-28 | 21 | SVO |
| -60 | 9.6 | 2430386 | 1942-01-26 | 2430370 | 1942-01-10 | 16 | SVO |
| -59 | 9.0 | 2430864 | 1943-05-19 | 2430840 | 1943-04-25 | 24 | SVO |
| -58 | 9.3 | 2431331 | 1944-08-28 | 2431309 | 1944-08-06 | 22 | AAVSO |
| -57 | 9.5 | 2431780 | 1945-11-20 | 2431779 | 1945-11-19 | 1 | SVO |
| -56 | 9.3 | 2432274 | 1947-03-29 | 2432248 | 1947-03-03 | 26 | SVO |
| -55 | 2432737 | 1948-07-04 | 2432718 | 1948-06-15 | 19 | AAVSO | |
| -54 | 8.8 | 2433227 | 1949-11-06 | 2433187 | 1949-09-27 | 40 | SVO |
| -53 | 9.7 | 2433693 | 1951-02-15 | 2433657 | 1951-01-10 | 36 | SVO |
| -52 | 9.6 | 2434172 | 1952-06-08 | 2434126 | 1952-04-23 | 46 | SVO |
| -51 | 8.8 | 2434633 | 1953-09-12 | 2434596 | 1953-08-06 | 37 | AAVSO |
| -50 | 11.2 | 2435096 | 1954-12-19 | 2435065 | 1954-11-18 | 31 | SVO |
| -49 | 9.3 | 2435561 | 1956-03-28 | 2435535 | 1956-03-02 | 26 | SVO |
| -48 | 2436010 | 1957-06-20 | 2436004 | 1957-06-14 | 6 | AAVSO | |
| -47 | 9.2 | 2436471 | 1958-09-24 | 2436474 | 1958-09-27 | -3 | AAVSO |
| -46 | 9.7 | 2436949 | 1960-01-15 | 2436943 | 1960-01-09 | 6 | SVO |
| -45 | 9.6 | 2437423 | 1961-05-03 | 2437413 | 1961-04-23 | 10 | SVO |
| -44 | 9.2 | 2437897 | 1962-08-20 | 2437882 | 1962-08-05 | 15 | SVO |
| -43 | 9.1 | 2438339 | 1963-11-05 | 2438352 | 1963-11-18 | -13 | SVO |
| -42 | 9.4 | 2438804 | 1965-02-12 | 2438821 | 1965-03-01 | -17 | SVO |
| -41 | 9.1 | 2439258 | 1966-05-12 | 2439291 | 1966-06-14 | -33 | SVO |
| -40 | 9.6 | 2439712 | 1967-08-09 | 2439760 | 1967-09-26 | -48 | SVO |
| -39 | 9.3 | 2440206 | 1968-12-15 | 2440230 | 1969-01-08 | -24 | SVO |
| -38 | 9.3 | 2440662 | 1970-03-16 | 2440699 | 1970-04-22 | -37 | SVO |
| -37 | 2441137 | 1971-07-04 | 2441169 | 1971-08-05 | -32 | AAVSO | |
| -36 | 9.6 | 2441606 | 1972-10-15 | 2441638 | 1972-11-16 | -32 | AAVSO |
| -35 | 9.8 | 2442058 | 1974-01-10 | 2442108 | 1974-03-01 | -50 | SVO |
| -34 | 9.2 | 2442520 | 1975-04-17 | 2442577 | 1975-06-13 | -57 | SVO |
| -33 | 10.5 | 2442984 | 1976-07-24 | 2443047 | 1976-09-25 | -63 | AAVSO |
| -32 | 8.8 | 2443470 | 1977-11-22 | 2443516 | 1978-01-07 | -46 | SVO |
| -31 | 10.5 | 2443953 | 1979-03-20 | 2443986 | 1979-04-22 | -33 | SVO |
| -30 | 9.8 | 2444443 | 1980-07-22 | 2444455 | 1980-08-03 | -12 | AAVSO |
| -29 | 10.6 | 2444905 | 1981-10-27 | 2444925 | 1981-11-16 | -20 | SVO |
| -28 | 9.1 | 2445386 | 1983-02-20 | 2445394 | 1983-02-28 | -8 | SVO |
| -27 | 10.0 | 2445860 | 1984-06-08 | 2445864 | 1984-06-12 | -4 | SVO |
| -26 | 9.6 | 2446348 | 1985-10-09 | 2446333 | 1985-09-24 | 15 | SVO |
| -25 | 9.1 | 2446827 | 1987-01-31 | 2446803 | 1987-01-07 | 24 | SVO |
| -24 | 9.8 | 2447307 | 1988-05-25 | 2447272 | 1988-04-20 | 35 | SVO |
| -23 | 8.9 | 2447798 | 1989-09-28 | 2447742 | 1989-08-03 | 56 | SVO |
| -22 | 10.0 | 2448274 | 1991-01-17 | 2448211 | 1990-11-15 | 63 | SVO |
| -21 | 9.6 | 2448763 | 1992-05-20 | 2448681 | 1992-02-28 | 82 | SVO |
| -20 | 8.9 | 2449228 | 1993-08-28 | 2449150 | 1993-06-11 | 78 | SVO |
| -19 | 10.3 | 2449690 | 1994-12-03 | 2449620 | 1994-09-24 | 70 | SVO |
| -18 | 9.3 | 2450149 | 1996-03-06 | 2450089 | 1996-01-06 | 60 | SVO |
| -17 | 9.8 | 2450629 | 1997-06-29 | 2450559 | 1997-04-20 | 70 | SVO |
| -16 | 10.2 | 2451096 | 1998-10-09 | 2451028 | 1998-08-02 | 68 | SVO |
| -15 | 8.6 | 2451545 | 2000-01-01 | 2451498 | 1999-11-15 | 47 | SVO |
| -14 | 11.3 | 2452012 | 2001-04-12 | 2451967 | 2001-02-26 | 45 | SVO |
| -13 | 2452465 | 2002-07-09 | 2452437 | 2002-06-11 | 28 | AAVSO | |
| -12 | 10.4 | 2452945 | 2003-11-01 | 2452906 | 2003-09-23 | 39 | SVO |
| -11 | 9.5 | 2453395 | 2005-01-24 | 2453376 | 2005-01-05 | 19 | SVO |
| -10 | 9.4 | 2453862 | 2006-05-06 | 2453845 | 2006-04-19 | 17 | SVO |
| -9 | 9.4 | 2454327 | 2007-08-14 | 2454315 | 2007-08-02 | 12 | SVO |
| -8 | 9.7 | 2454796 | 2008-11-25 | 2454784 | 2008-11-13 | 12 | SVO |
| -7 | 10.1 | 2455273 | 2010-03-17 | 2455254 | 2010-02-26 | 19 | SVO |
| -6 | 10.0 | 2455744 | 2011-07-01 | 2455723 | 2011-06-10 | 21 | SVO |
| -5 | 8.7 | 2456198 | 2012-09-27 | 2456193 | 2012-09-22 | 5 | SVO |
| -4 | 10.6 | 2456669 | 2014-01-11 | 2456662 | 2014-01-04 | 7 | SVO |
| -3 | 9.7 | 2457145 | 2015-05-02 | 2457132 | 2015-04-19 | 13 | SVO |
| -2 | 10.0 | 2457589 | 2016-07-19 | 2457601 | 2016-07-31 | -12 | SVO |
| -1 | 9.6 | 2458066 | 2017-11-08 | 2458071 | 2017-11-13 | -5 | SVO |
| 0 | 9.6 | 2458541 | 2019-02-26 | 2458540 | 2019-02-25 | 1 | SVO |
| 1 | 8.9 | 2459006 | 2020-06-05 | 2459010 | 2020-06-09 | -4 | SVO |
| 2 | 10.2 | 2459479 | 2021-09-21 | 2459479 | 2021-09-21 | 0 | 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. |