| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -58 | 2415530 | 1901-05-25 | 2415525 | 1901-05-20 | 5 | SVO | |
| -57 | 2415987 | 1902-08-25 | 2415994 | 1902-09-01 | -7 | GuL, 1920, 1.2 | |
| -56 | 2416480 | 1903-12-31 | 2416463 | 1903-12-14 | 17 | AnHar, 1909, vol 55, p 95 | |
| -54 | 2417434 | 1906-08-11 | 2417402 | 1906-07-10 | 32 | AAVSO | |
| -53 | 9.0 | 2417904 | 1907-11-24 | 2417871 | 1907-10-22 | 33 | AAVSO |
| -52 | 2418348 | 1909-02-10 | 2418340 | 1909-02-02 | 8 | AAVSO | |
| -50 | 2419310 | 1911-09-30 | 2419279 | 1911-08-30 | 31 | SVO | |
| -47 | 10.4 | 2420738 | 1915-08-28 | 2420686 | 1915-07-07 | 52 | AAVSO |
| -46 | 9.7 | 2421204 | 1916-12-06 | 2421156 | 1916-10-19 | 48 | AAVSO |
| -45 | 2421696 | 1918-04-12 | 2421625 | 1918-01-31 | 71 | AAVSO | |
| -44 | 2422132 | 1919-06-22 | 2422094 | 1919-05-15 | 38 | AAVSO | |
| -43 | 9.7 | 2422583 | 1920-09-15 | 2422563 | 1920-08-26 | 20 | SVO |
| -42 | 8.8 | 2423058 | 1922-01-03 | 2423033 | 1921-12-09 | 25 | AAVSO |
| -41 | 10.9 | 2423526 | 1923-04-16 | 2423502 | 1923-03-23 | 24 | AAVSO |
| -40 | 10.6 | 2423999 | 1924-08-01 | 2423971 | 1924-07-04 | 28 | AAVSO |
| -39 | 8.8 | 2424435 | 1925-10-11 | 2424440 | 1925-10-16 | -5 | AAVSO |
| -38 | 2424890 | 1927-01-09 | 2424910 | 1927-01-29 | -20 | AAVSO | |
| -37 | 2425347 | 1928-04-10 | 2425379 | 1928-05-12 | -32 | AAVSO | |
| -36 | 9.9 | 2425806 | 1929-07-13 | 2425848 | 1929-08-24 | -42 | SVO |
| -35 | 9.9 | 2426264 | 1930-10-14 | 2426317 | 1930-12-06 | -53 | SVO |
| -34 | 9.6 | 2426747 | 1932-02-09 | 2426787 | 1932-03-20 | -40 | SVO |
| -33 | 9.9 | 2427203 | 1933-05-10 | 2427256 | 1933-07-02 | -53 | SVO |
| -32 | 9.7 | 2427687 | 1934-09-06 | 2427725 | 1934-10-14 | -38 | AAVSO |
| -31 | 9.9 | 2428165 | 1935-12-28 | 2428194 | 1936-01-26 | -29 | AAVSO |
| -30 | 2428627 | 1937-04-03 | 2428664 | 1937-05-10 | -37 | AAVSO | |
| -29 | 10.4 | 2429116 | 1938-08-05 | 2429133 | 1938-08-22 | -17 | SVO |
| -28 | 2429582 | 1939-11-14 | 2429602 | 1939-12-04 | -20 | AAVSO | |
| -27 | 2430075 | 1941-03-21 | 2430071 | 1941-03-17 | 4 | AAVSO | |
| -26 | 9.8 | 2430561 | 1942-07-20 | 2430541 | 1942-06-30 | 20 | AAVSO |
| -25 | 10.0 | 2431040 | 1943-11-11 | 2431010 | 1943-10-12 | 30 | AAVSO |
| -23 | 10.0 | 2431966 | 1946-05-25 | 2431948 | 1946-05-07 | 18 | AAVSO |
| -22 | 11.4 | 2432466 | 1947-10-07 | 2432418 | 1947-08-20 | 48 | AAVSO |
| -21 | 2432936 | 1949-01-19 | 2432887 | 1948-12-01 | 49 | AAVSO | |
| -20 | 2433364 | 1950-03-23 | 2433356 | 1950-03-15 | 8 | AAVSO | |
| -19 | 11.2 | 2433854 | 1951-07-26 | 2433825 | 1951-06-27 | 29 | AAVSO |
| -18 | 10.2 | 2434328 | 1952-11-11 | 2434295 | 1952-10-09 | 33 | SVO |
| -17 | 2434786 | 1954-02-12 | 2434764 | 1954-01-21 | 22 | AAVSO | |
| -16 | 2435226 | 1955-04-28 | 2435233 | 1955-05-05 | -7 | AAVSO | |
| -15 | 11.2 | 2435693 | 1956-08-07 | 2435702 | 1956-08-16 | -9 | SVO |
| -14 | 11.7 | 2436155 | 1957-11-12 | 2436172 | 1957-11-29 | -17 | AAVSO |
| -13 | 2436616 | 1959-02-16 | 2436641 | 1959-03-13 | -25 | AAVSO | |
| -12 | 11.5 | 2437083 | 1960-05-28 | 2437110 | 1960-06-24 | -27 | AAVSO |
| -11 | 11.9 | 2437540 | 1961-08-28 | 2437579 | 1961-10-06 | -39 | SVO |
| -10 | 10.9 | 2438027 | 1962-12-28 | 2438048 | 1963-01-18 | -21 | SVO |
| -9 | 12.3 | 2438473 | 1964-03-18 | 2438518 | 1964-05-02 | -45 | AAVSO |
| -8 | 10.7 | 2438969 | 1965-07-27 | 2438987 | 1965-08-14 | -18 | SVO |
| -7 | 2439410 | 1966-10-11 | 2439456 | 1966-11-26 | -46 | AAVSO | |
| -6 | 2439870 | 1968-01-14 | 2439925 | 1968-03-09 | -55 | AAVSO | |
| -5 | 11.4 | 2440373 | 1969-05-31 | 2440395 | 1969-06-22 | -22 | AAVSO |
| -4 | 11.3 | 2440825 | 1970-08-26 | 2440864 | 1970-10-04 | -39 | SVO |
| -3 | 2441294 | 1971-12-08 | 2441333 | 1972-01-16 | -39 | AAVSO | |
| -2 | 2441756 | 1973-03-14 | 2441802 | 1973-04-29 | -46 | AAVSO | |
| -1 | 11.9 | 2442252 | 1974-07-23 | 2442272 | 1974-08-12 | -20 | SVO |
| 0 | 10.7 | 2442723 | 1975-11-06 | 2442741 | 1975-11-24 | -18 | SVO |
| 1 | 9.7 | 2443164 | 1977-01-20 | 2443210 | 1977-03-07 | -46 | SVO |
| 2 | 10.2 | 2443673 | 1978-06-13 | 2443679 | 1978-06-19 | -6 | AAVSO |
| 3 | 10.4 | 2444137 | 1979-09-20 | 2444149 | 1979-10-02 | -12 | SVO |
| 4 | 10.5 | 2444608 | 1981-01-03 | 2444618 | 1981-01-13 | -10 | AAVSO |
| 5 | 10.7 | 2445084 | 1982-04-24 | 2445087 | 1982-04-27 | -3 | AAVSO |
| 6 | 11.3 | 2445552 | 1983-08-05 | 2445556 | 1983-08-09 | -4 | AAVSO |
| 7 | 10.8 | 2446021 | 1984-11-16 | 2446026 | 1984-11-21 | -5 | AAVSO |
| 8 | 12.2 | 2446487 | 1986-02-25 | 2446495 | 1986-03-05 | -8 | AAVSO |
| 9 | 9.9 | 2446958 | 1987-06-11 | 2446964 | 1987-06-17 | -6 | SVO |
| 10 | 10.9 | 2447436 | 1988-10-01 | 2447433 | 1988-09-28 | 3 | SVO |
| 11 | 10.3 | 2447898 | 1990-01-06 | 2447903 | 1990-01-11 | -5 | SVO |
| 12 | 9.8 | 2448367 | 1991-04-20 | 2448372 | 1991-04-25 | -5 | SVO |
| 13 | 9.8 | 2448819 | 1992-07-15 | 2448841 | 1992-08-06 | -22 | SVO |
| 14 | 9.8 | 2449300 | 1993-11-08 | 2449310 | 1993-11-18 | -10 | SVO |
| 15 | 10.6 | 2449793 | 1995-03-16 | 2449780 | 1995-03-03 | 13 | SVO |
| 16 | 10.1 | 2450246 | 1996-06-11 | 2450249 | 1996-06-14 | -3 | SVO |
| 17 | 9.8 | 2450720 | 1997-09-28 | 2450718 | 1997-09-26 | 2 | SVO |
| 18 | 9.7 | 2451186 | 1999-01-07 | 2451187 | 1999-01-08 | -1 | SVO |
| 19 | 2451658 | 2000-04-23 | 2451657 | 2000-04-22 | 1 | AAVSO | |
| 20 | 9.8 | 2452144 | 2001-08-22 | 2452126 | 2001-08-04 | 18 | SVO |
| 21 | 9.7 | 2452609 | 2002-11-30 | 2452595 | 2002-11-16 | 14 | SVO |
| 22 | 2453079 | 2004-03-14 | 2453064 | 2004-02-28 | 15 | AAVSO | |
| 23 | 9.4 | 2453540 | 2005-06-18 | 2453534 | 2005-06-12 | 6 | SVO |
| 24 | 10.6 | 2454016 | 2006-10-07 | 2454003 | 2006-09-24 | 13 | SVO |
| 25 | 9.5 | 2454483 | 2008-01-17 | 2454472 | 2008-01-06 | 11 | SVO |
| 26 | 10.7 | 2454951 | 2009-04-29 | 2454941 | 2009-04-19 | 10 | SVO |
| 27 | 9.8 | 2455421 | 2010-08-12 | 2455411 | 2010-08-02 | 10 | SVO |
| 28 | 11.7 | 2455896 | 2011-11-30 | 2455880 | 2011-11-14 | 16 | AAVSO |
| 29 | 9.9 | 2456374 | 2013-03-22 | 2456349 | 2013-02-25 | 25 | SVO |
| 30 | 11.7 | 2456841 | 2014-07-02 | 2456818 | 2014-06-09 | 23 | AAVSO |
| 31 | 9.7 | 2457297 | 2015-10-01 | 2457287 | 2015-09-21 | 10 | SVO |
| 32 | 10.6 | 2457775 | 2017-01-21 | 2457757 | 2017-01-03 | 18 | SVO |
| 33 | 10.7 | 2458258 | 2018-05-19 | 2458226 | 2018-04-17 | 32 | SVO |
| 34 | 9.4 | 2458716 | 2019-08-20 | 2458695 | 2019-07-30 | 21 | SVO |
| 35 | 11.8 | 2459181 | 2020-11-27 | 2459164 | 2020-11-10 | 17 | SVO |
| 36 | 10.6 | 2459659 | 2022-03-20 | 2459634 | 2022-02-23 | 25 | SVO |
| 37 | 10.8 | 2460117 | 2023-06-21 | 2460103 | 2023-06-07 | 14 | SVO |
| 38 | 9.5 | 2460595 | 2024-10-11 | 2460572 | 2024-09-18 | 23 | 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. |