| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -68 | 2409970 | 1886-03-04 | 2410826 | 1888-07-07 | -856 | SVO | |
| -64 | 2412080 | 1891-12-13 | 2412730 | 1893-09-23 | -650 | SVO | |
| -58 | 2415105 | 1900-03-26 | 2415585 | 1901-07-19 | -480 | AnHar, 1909, vol 55, p 95 | |
| -56 | 2416130 | 1903-01-15 | 2416536 | 1904-02-25 | -406 | AnHar, 1909, vol 55, p 95 | |
| -55 | 2416633 | 1904-06-01 | 2417012 | 1905-06-15 | -379 | GuL, 1918, 1.1 | |
| -54 | 2417113 | 1905-09-24 | 2417488 | 1906-10-04 | -375 | AAVSO | |
| -53 | 2417614 | 1907-02-07 | 2417964 | 1908-01-23 | -350 | AAVSO | |
| -51 | 9.2 | 2418620 | 1909-11-09 | 2418916 | 1910-09-01 | -296 | AAVSO |
| -49 | 2419604 | 1912-07-20 | 2419867 | 1913-04-09 | -263 | AAVSO | |
| -47 | 2420604 | 1915-04-16 | 2420819 | 1915-11-17 | -215 | AAVSO | |
| -46 | 2421112 | 1916-09-05 | 2421295 | 1917-03-07 | -183 | AAVSO | |
| -45 | 2421620 | 1918-01-26 | 2421771 | 1918-06-26 | -151 | AAVSO | |
| -44 | 2422105 | 1919-05-26 | 2422246 | 1919-10-14 | -141 | AAVSO | |
| -43 | 9.5 | 2422606 | 1920-10-08 | 2422722 | 1921-02-01 | -116 | AAVSO |
| -42 | 10.9 | 2423116 | 1922-03-02 | 2423198 | 1922-05-23 | -82 | AAVSO |
| -41 | 2423614 | 1923-07-13 | 2423674 | 1923-09-11 | -60 | AAVSO | |
| -40 | 11.1 | 2424118 | 1924-11-28 | 2424150 | 1924-12-30 | -32 | SVO |
| -39 | 10.1 | 2424616 | 1926-04-10 | 2424626 | 1926-04-20 | -10 | AAVSO |
| -38 | 2425113 | 1927-08-20 | 2425101 | 1927-08-08 | 12 | AAVSO | |
| -37 | 10.0 | 2425637 | 1929-01-25 | 2425577 | 1928-11-26 | 60 | SVO |
| -36 | 2426132 | 1930-06-04 | 2426053 | 1930-03-17 | 79 | AAVSO | |
| -35 | 10.7 | 2426611 | 1931-09-26 | 2426529 | 1931-07-06 | 82 | AAVSO |
| -34 | 10.3 | 2427100 | 1933-01-27 | 2427005 | 1932-10-24 | 95 | SVO |
| -33 | 10.1 | 2427583 | 1934-05-25 | 2427481 | 1934-02-12 | 102 | SVO |
| -32 | 10.3 | 2428066 | 1935-09-20 | 2427956 | 1935-06-02 | 110 | AAVSO |
| -31 | 10.7 | 2428566 | 1937-02-01 | 2428432 | 1936-09-20 | 134 | SVO |
| -30 | 10.4 | 2429052 | 1938-06-02 | 2428908 | 1938-01-09 | 144 | SVO |
| -29 | 10.7 | 2429533 | 1939-09-26 | 2429384 | 1939-04-30 | 149 | AAVSO |
| -28 | 10.6 | 2430022 | 1941-01-27 | 2429860 | 1940-08-18 | 162 | SVO |
| -27 | 10.3 | 2430488 | 1942-05-08 | 2430336 | 1941-12-07 | 152 | SVO |
| -26 | 10.6 | 2430977 | 1943-09-09 | 2430811 | 1943-03-27 | 166 | AAVSO |
| -25 | 10.5 | 2431474 | 1945-01-18 | 2431287 | 1944-07-15 | 187 | AAVSO |
| -24 | 10.0 | 2431952 | 1946-05-11 | 2431763 | 1945-11-03 | 189 | AAVSO |
| -23 | 2432430 | 1947-09-01 | 2432239 | 1947-02-22 | 191 | SVO | |
| -22 | 11.3 | 2432939 | 1949-01-22 | 2432715 | 1948-06-12 | 224 | SVO |
| -21 | 10.0 | 2433415 | 1950-05-13 | 2433191 | 1949-10-01 | 224 | AAVSO |
| -20 | 12.1 | 2433918 | 1951-09-28 | 2433666 | 1951-01-19 | 252 | AAVSO |
| -19 | 10.4 | 2434398 | 1953-01-20 | 2434142 | 1952-05-09 | 256 | SVO |
| -18 | 2434881 | 1954-05-18 | 2434618 | 1953-08-28 | 263 | AAVSO | |
| -17 | 12.2 | 2435380 | 1955-09-29 | 2435094 | 1954-12-17 | 286 | AAVSO |
| -16 | 11.0 | 2435870 | 1957-01-31 | 2435570 | 1956-04-06 | 300 | SVO |
| -15 | 2436339 | 1958-05-15 | 2436046 | 1957-07-26 | 293 | AAVSO | |
| -14 | 10.7 | 2436836 | 1959-09-24 | 2436522 | 1958-11-14 | 314 | AAVSO |
| -13 | 9.9 | 2437308 | 1961-01-08 | 2436997 | 1960-03-03 | 311 | SVO |
| -12 | 10.3 | 2437791 | 1962-05-06 | 2437473 | 1961-06-22 | 318 | AAVSO |
| -11 | 11.3 | 2438276 | 1963-09-03 | 2437949 | 1962-10-11 | 327 | AAVSO |
| -10 | 10.2 | 2438762 | 1965-01-01 | 2438425 | 1964-01-30 | 337 | SVO |
| -9 | 9.7 | 2439221 | 1966-04-05 | 2438901 | 1965-05-20 | 320 | SVO |
| -8 | 2439693 | 1967-07-21 | 2439377 | 1966-09-08 | 316 | AAVSO | |
| -7 | 9.8 | 2440167 | 1968-11-06 | 2439852 | 1967-12-27 | 315 | SVO |
| -6 | 11.2 | 2440631 | 1970-02-13 | 2440328 | 1969-04-16 | 303 | AAVSO |
| -5 | 2441104 | 1971-06-01 | 2440804 | 1970-08-05 | 300 | AAVSO | |
| -4 | 2441542 | 1972-08-12 | 2441280 | 1971-11-24 | 262 | AAVSO | |
| -3 | 10.3 | 2442036 | 1973-12-19 | 2441756 | 1973-03-14 | 280 | SVO |
| -2 | 10.8 | 2442501 | 1975-03-29 | 2442232 | 1974-07-03 | 269 | SVO |
| -1 | 10.6 | 2442973 | 1976-07-13 | 2442707 | 1975-10-21 | 266 | AAVSO |
| 0 | 11.6 | 2443432 | 1977-10-15 | 2443183 | 1977-02-08 | 249 | SVO |
| 1 | 10.8 | 2443872 | 1978-12-29 | 2443659 | 1978-05-30 | 213 | SVO |
| 2 | 10.3 | 2444341 | 1980-04-11 | 2444135 | 1979-09-18 | 206 | AAVSO |
| 3 | 10.9 | 2444822 | 1981-08-05 | 2444611 | 1981-01-06 | 211 | AAVSO |
| 4 | 10.3 | 2445265 | 1982-10-22 | 2445087 | 1982-04-27 | 178 | AAVSO |
| 5 | 10.4 | 2445722 | 1984-01-22 | 2445562 | 1983-08-15 | 160 | SVO |
| 6 | 10.1 | 2446188 | 1985-05-02 | 2446038 | 1984-12-03 | 150 | SVO |
| 7 | 10.6 | 2446664 | 1986-08-21 | 2446514 | 1986-03-24 | 150 | SVO |
| 8 | 9.9 | 2447126 | 1987-11-26 | 2446990 | 1987-07-13 | 136 | SVO |
| 9 | 11.2 | 2447576 | 1989-02-18 | 2447466 | 1988-10-31 | 110 | SVO |
| 10 | 10.3 | 2448047 | 1990-06-04 | 2447942 | 1990-02-19 | 105 | SVO |
| 11 | 2448529 | 1991-09-29 | 2448417 | 1991-06-09 | 112 | AAVSO | |
| 12 | 10.3 | 2448969 | 1992-12-12 | 2448893 | 1992-09-27 | 76 | SVO |
| 13 | 10.5 | 2449437 | 1994-03-25 | 2449369 | 1994-01-16 | 68 | SVO |
| 14 | 10.6 | 2449913 | 1995-07-14 | 2449845 | 1995-05-07 | 68 | SVO |
| 15 | 10.3 | 2450352 | 1996-09-25 | 2450321 | 1996-08-25 | 31 | SVO |
| 16 | 11.1 | 2450811 | 1997-12-28 | 2450797 | 1997-12-14 | 14 | SVO |
| 17 | 11.0 | 2451280 | 1999-04-11 | 2451272 | 1999-04-03 | 8 | SVO |
| 18 | 10.1 | 2451685 | 2000-05-20 | 2451748 | 2000-07-22 | -63 | SVO |
| 19 | 11.2 | 2452176 | 2001-09-23 | 2452224 | 2001-11-10 | -48 | SVO |
| 20 | 10.9 | 2452618 | 2002-12-09 | 2452700 | 2003-03-01 | -82 | SVO |
| 21 | 10.3 | 2453060 | 2004-02-24 | 2453176 | 2004-06-19 | -116 | SVO |
| 22 | 10.7 | 2453503 | 2005-05-12 | 2453652 | 2005-10-08 | -149 | SVO |
| 23 | 2453942 | 2006-07-25 | 2454127 | 2007-01-26 | -185 | AAVSO | |
| 24 | 10.5 | 2454399 | 2007-10-25 | 2454603 | 2008-05-16 | -204 | SVO |
| 25 | 10.4 | 2454835 | 2009-01-03 | 2455079 | 2009-09-04 | -244 | SVO |
| 26 | 10.5 | 2455276 | 2010-03-20 | 2455555 | 2010-12-24 | -279 | SVO |
| 27 | 10.6 | 2455740 | 2011-06-27 | 2456031 | 2012-04-13 | -291 | SVO |
| 28 | 10.8 | 2456174 | 2012-09-03 | 2456507 | 2013-08-02 | -333 | SVO |
| 29 | 10.3 | 2456633 | 2013-12-06 | 2456982 | 2014-11-20 | -349 | SVO |
| 30 | 10.4 | 2457080 | 2015-02-26 | 2457458 | 2016-03-10 | -378 | SVO |
| 31 | 10.4 | 2457522 | 2016-05-13 | 2457934 | 2017-06-29 | -412 | SVO |
| 32 | 10.2 | 2457972 | 2017-08-06 | 2458410 | 2018-10-18 | -438 | SVO |
| 33 | 10.8 | 2458439 | 2018-11-16 | 2458886 | 2020-02-06 | -447 | SVO |
| 34 | 10.1 | 2458880 | 2020-01-31 | 2459362 | 2021-05-27 | -482 | SVO |
| 35 | 10.2 | 2459336 | 2021-05-01 | 2459837 | 2022-09-14 | -501 | SVO |
| 36 | 10.1 | 2459765 | 2022-07-04 | 2460313 | 2024-01-03 | -548 | 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. |