| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -49 | 2415009 | 1899-12-20 | 2416005 | 1902-09-12 | -996 | AnHar, 1909, vol 55, p 95 | |
| -47 | 2416141 | 1903-01-26 | 2417094 | 1905-09-05 | -953 | AnHar, 1909, vol 55, p 95 | |
| -46 | 2416749 | 1904-09-25 | 2417638 | 1907-03-03 | -889 | AnHar, 1909, vol 55, p 95 | |
| -37 | 2421660 | 1918-03-07 | 2422540 | 1920-08-03 | -880 | SVO | |
| -34 | 10.6 | 2423276 | 1922-08-09 | 2424174 | 1925-01-23 | -898 | SVO |
| -33 | 10.2 | 2423823 | 1924-02-07 | 2424718 | 1926-07-21 | -895 | AAVSO |
| -32 | 10.5 | 2424363 | 1925-07-31 | 2425263 | 1928-01-17 | -900 | SVO |
| -31 | 10.6 | 2424890 | 1927-01-09 | 2425807 | 1929-07-14 | -917 | SVO |
| -30 | 2425446 | 1928-07-18 | 2426352 | 1931-01-10 | -906 | AAVSO | |
| -29 | 10.4 | 2426009 | 1930-02-01 | 2426897 | 1932-07-08 | -888 | SVO |
| -28 | 10.2 | 2426556 | 1931-08-02 | 2427441 | 1934-01-03 | -885 | SVO |
| -27 | 10.8 | 2427130 | 1933-02-26 | 2427986 | 1935-07-02 | -856 | AAVSO |
| -26 | 10.5 | 2427710 | 1934-09-29 | 2428530 | 1936-12-27 | -820 | SVO |
| -25 | 10.1 | 2428279 | 1936-04-20 | 2429075 | 1938-06-25 | -796 | AAVSO |
| -24 | 10.4 | 2428891 | 1937-12-23 | 2429620 | 1939-12-22 | -729 | SVO |
| -23 | 11.0 | 2429516 | 1939-09-09 | 2430164 | 1941-06-18 | -648 | SVO |
| -22 | 10.4 | 2430075 | 1941-03-21 | 2430709 | 1942-12-15 | -634 | AAVSO |
| -21 | 10.1 | 2430686 | 1942-11-22 | 2431253 | 1944-06-11 | -567 | SVO |
| -20 | 2431249 | 1944-06-07 | 2431798 | 1945-12-08 | -549 | AAVSO | |
| -18 | 10.3 | 2432524 | 1947-12-04 | 2432887 | 1948-12-01 | -363 | AAVSO |
| -17 | 2433131 | 1949-08-02 | 2433432 | 1950-05-30 | -301 | AAVSO | |
| -16 | 10.8 | 2433700 | 1951-02-22 | 2433976 | 1951-11-25 | -276 | SVO |
| -15 | 10.4 | 2434313 | 1952-10-27 | 2434521 | 1953-05-23 | -208 | SVO |
| -14 | 10.2 | 2434897 | 1954-06-03 | 2435066 | 1954-11-19 | -169 | AAVSO |
| -13 | 10.2 | 2435462 | 1955-12-20 | 2435610 | 1956-05-16 | -148 | SVO |
| -12 | 10.5 | 2436065 | 1957-08-14 | 2436155 | 1957-11-12 | -90 | SVO |
| -11 | 9.9 | 2436626 | 1959-02-26 | 2436699 | 1959-05-10 | -73 | AAVSO |
| -10 | 11.1 | 2437207 | 1960-09-29 | 2437244 | 1960-11-05 | -37 | SVO |
| -9 | 9.7 | 2437775 | 1962-04-20 | 2437789 | 1962-05-04 | -14 | AAVSO |
| -8 | 10.7 | 2438333 | 1963-10-30 | 2438333 | 1963-10-30 | 0 | AAVSO |
| -7 | 10.3 | 2438899 | 1965-05-18 | 2438878 | 1965-04-27 | 21 | AAVSO |
| -6 | 10.3 | 2439449 | 1966-11-19 | 2439422 | 1966-10-23 | 27 | SVO |
| -5 | 10.0 | 2439981 | 1968-05-04 | 2439967 | 1968-04-20 | 14 | AAVSO |
| -4 | 10.6 | 2440524 | 1969-10-29 | 2440512 | 1969-10-17 | 12 | SVO |
| -3 | 10.2 | 2441091 | 1971-05-19 | 2441056 | 1971-04-14 | 35 | AAVSO |
| -2 | 10.4 | 2441595 | 1972-10-04 | 2441601 | 1972-10-10 | -6 | SVO |
| -1 | 10.7 | 2442163 | 1974-04-25 | 2442145 | 1974-04-07 | 18 | SVO |
| 0 | 10.4 | 2442692 | 1975-10-06 | 2442690 | 1975-10-04 | 2 | SVO |
| 1 | 10.7 | 2443244 | 1977-04-10 | 2443235 | 1977-04-01 | 9 | SVO |
| 2 | 10.7 | 2443780 | 1978-09-28 | 2443779 | 1978-09-27 | 1 | SVO |
| 3 | 10.1 | 2444349 | 1980-04-19 | 2444324 | 1980-03-25 | 25 | SVO |
| 4 | 10.4 | 2444888 | 1981-10-10 | 2444868 | 1981-09-20 | 20 | SVO |
| 5 | 10.7 | 2445454 | 1983-04-29 | 2445413 | 1983-03-19 | 41 | SVO |
| 6 | 10.6 | 2446007 | 1984-11-02 | 2445958 | 1984-09-14 | 49 | SVO |
| 7 | 9.9 | 2446580 | 1986-05-29 | 2446502 | 1986-03-12 | 78 | SVO |
| 8 | 11.0 | 2447155 | 1987-12-25 | 2447047 | 1987-09-08 | 108 | SVO |
| 9 | 10.6 | 2447723 | 1989-07-15 | 2447591 | 1989-03-05 | 132 | SVO |
| 10 | 11.0 | 2448299 | 1991-02-11 | 2448136 | 1990-09-01 | 163 | SVO |
| 11 | 10.5 | 2448887 | 1992-09-21 | 2448681 | 1992-02-28 | 206 | SVO |
| 12 | 10.6 | 2449465 | 1994-04-22 | 2449225 | 1993-08-25 | 240 | SVO |
| 13 | 10.7 | 2450049 | 1995-11-27 | 2449770 | 1995-02-21 | 279 | SVO |
| 14 | 10.8 | 2450657 | 1997-07-27 | 2450314 | 1996-08-18 | 343 | SVO |
| 15 | 2451236 | 1999-02-26 | 2450859 | 1998-02-14 | 377 | AAVSO | |
| 16 | 10.8 | 2451843 | 2000-10-25 | 2451404 | 1999-08-13 | 439 | SVO |
| 17 | 2452440 | 2002-06-14 | 2451948 | 2001-02-07 | 492 | AAVSO | |
| 18 | 10.3 | 2453034 | 2004-01-29 | 2452493 | 2002-08-06 | 541 | SVO |
| 19 | 11.2 | 2453667 | 2005-10-23 | 2453037 | 2004-02-01 | 630 | SVO |
| 20 | 11.3 | 2454275 | 2007-06-23 | 2453582 | 2005-07-30 | 693 | SVO |
| 21 | 10.3 | 2454873 | 2009-02-10 | 2454127 | 2007-01-26 | 746 | SVO |
| 22 | 11.5 | 2455478 | 2010-10-08 | 2454671 | 2008-07-23 | 807 | SVO |
| 23 | 10.6 | 2456041 | 2012-04-23 | 2455216 | 2010-01-19 | 825 | SVO |
| 24 | 10.9 | 2456645 | 2013-12-18 | 2455760 | 2011-07-17 | 885 | SVO |
| 25 | 10.8 | 2457261 | 2015-08-26 | 2456305 | 2013-01-12 | 956 | SVO |
| 26 | 10.0 | 2457801 | 2017-02-16 | 2456850 | 2014-07-11 | 951 | SVO |
| 27 | 11.0 | 2458401 | 2018-10-09 | 2457394 | 2016-01-06 | 1007 | SVO |
| 28 | 10.9 | 2458963 | 2020-04-23 | 2457939 | 2017-07-04 | 1024 | SVO |
| 29 | 10.5 | 2459528 | 2021-11-09 | 2458483 | 2018-12-30 | 1045 | 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. |