| E | Mag | O (JD) | O (dat) | C (JD) | C (Dat) | O-C | Source |
| -68 | 2409970 | 1886-03-04 | 2410857 | 1888-08-07 | -887 | SVO | |
| -64 | 2412080 | 1891-12-13 | 2412758 | 1893-10-21 | -678 | SVO | |
| -58 | 2415105 | 1900-03-26 | 2415608 | 1901-08-11 | -503 | AnHar, 1909, vol 55, p 95 | |
| -56 | 2416130 | 1903-01-15 | 2416558 | 1904-03-18 | -428 | AnHar, 1909, vol 55, p 95 | |
| -55 | 2416633 | 1904-06-01 | 2417034 | 1905-07-07 | -401 | GuL, 1918, 1.1 | |
| -54 | 2417113 | 1905-09-24 | 2417509 | 1906-10-25 | -396 | AAVSO | |
| -53 | 2417614 | 1907-02-07 | 2417984 | 1908-02-12 | -370 | AAVSO | |
| -51 | 9.2 | 2418620 | 1909-11-09 | 2418934 | 1910-09-19 | -314 | AAVSO |
| -49 | 2419604 | 1912-07-20 | 2419884 | 1913-04-26 | -280 | AAVSO | |
| -47 | 2420604 | 1915-04-16 | 2420834 | 1915-12-02 | -230 | AAVSO | |
| -46 | 2421112 | 1916-09-05 | 2421309 | 1917-03-21 | -197 | AAVSO | |
| -45 | 2421620 | 1918-01-26 | 2421784 | 1918-07-09 | -164 | AAVSO | |
| -44 | 2422105 | 1919-05-26 | 2422260 | 1919-10-28 | -155 | AAVSO | |
| -43 | 9.5 | 2422606 | 1920-10-08 | 2422735 | 1921-02-14 | -129 | AAVSO |
| -42 | 10.9 | 2423116 | 1922-03-02 | 2423210 | 1922-06-04 | -94 | AAVSO |
| -41 | 2423614 | 1923-07-13 | 2423685 | 1923-09-22 | -71 | AAVSO | |
| -40 | 11.1 | 2424118 | 1924-11-28 | 2424160 | 1925-01-09 | -42 | SVO |
| -39 | 10.1 | 2424616 | 1926-04-10 | 2424635 | 1926-04-29 | -19 | AAVSO |
| -38 | 2425113 | 1927-08-20 | 2425110 | 1927-08-17 | 3 | AAVSO | |
| -37 | 10.0 | 2425637 | 1929-01-25 | 2425585 | 1928-12-04 | 52 | SVO |
| -36 | 2426132 | 1930-06-04 | 2426060 | 1930-03-24 | 72 | AAVSO | |
| -35 | 10.7 | 2426611 | 1931-09-26 | 2426535 | 1931-07-12 | 76 | AAVSO |
| -34 | 10.3 | 2427100 | 1933-01-27 | 2427011 | 1932-10-30 | 89 | SVO |
| -33 | 10.1 | 2427583 | 1934-05-25 | 2427486 | 1934-02-17 | 97 | SVO |
| -32 | 10.3 | 2428066 | 1935-09-20 | 2427961 | 1935-06-07 | 105 | AAVSO |
| -31 | 10.7 | 2428566 | 1937-02-01 | 2428436 | 1936-09-24 | 130 | SVO |
| -30 | 10.4 | 2429052 | 1938-06-02 | 2428911 | 1938-01-12 | 141 | SVO |
| -29 | 10.7 | 2429533 | 1939-09-26 | 2429386 | 1939-05-02 | 147 | AAVSO |
| -28 | 10.6 | 2430022 | 1941-01-27 | 2429861 | 1940-08-19 | 161 | 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 | 2431286 | 1944-07-14 | 188 | AAVSO |
| -24 | 10.0 | 2431952 | 1946-05-11 | 2431761 | 1945-11-01 | 191 | AAVSO |
| -23 | 2432430 | 1947-09-01 | 2432237 | 1947-02-20 | 193 | SVO | |
| -22 | 11.3 | 2432939 | 1949-01-22 | 2432712 | 1948-06-09 | 227 | SVO |
| -21 | 10.0 | 2433415 | 1950-05-13 | 2433187 | 1949-09-27 | 228 | AAVSO |
| -20 | 12.1 | 2433918 | 1951-09-28 | 2433662 | 1951-01-15 | 256 | AAVSO |
| -19 | 10.4 | 2434398 | 1953-01-20 | 2434137 | 1952-05-04 | 261 | SVO |
| -18 | 2434881 | 1954-05-18 | 2434612 | 1953-08-22 | 269 | AAVSO | |
| -17 | 12.2 | 2435380 | 1955-09-29 | 2435087 | 1954-12-10 | 293 | AAVSO |
| -16 | 11.0 | 2435870 | 1957-01-31 | 2435562 | 1956-03-29 | 308 | SVO |
| -15 | 2436339 | 1958-05-15 | 2436037 | 1957-07-17 | 302 | AAVSO | |
| -14 | 10.7 | 2436836 | 1959-09-24 | 2436512 | 1958-11-04 | 324 | AAVSO |
| -13 | 9.9 | 2437308 | 1961-01-08 | 2436987 | 1960-02-22 | 321 | SVO |
| -12 | 10.3 | 2437791 | 1962-05-06 | 2437463 | 1961-06-12 | 328 | AAVSO |
| -11 | 11.3 | 2438276 | 1963-09-03 | 2437938 | 1962-09-30 | 338 | AAVSO |
| -10 | 10.2 | 2438762 | 1965-01-01 | 2438413 | 1964-01-18 | 349 | SVO |
| -9 | 9.7 | 2439221 | 1966-04-05 | 2438888 | 1965-05-07 | 333 | SVO |
| -8 | 2439693 | 1967-07-21 | 2439363 | 1966-08-25 | 330 | AAVSO | |
| -7 | 9.8 | 2440167 | 1968-11-06 | 2439838 | 1967-12-13 | 329 | SVO |
| -6 | 11.2 | 2440631 | 1970-02-13 | 2440313 | 1969-04-01 | 318 | AAVSO |
| -5 | 2441104 | 1971-06-01 | 2440788 | 1970-07-20 | 316 | AAVSO | |
| -4 | 2441542 | 1972-08-12 | 2441263 | 1971-11-07 | 279 | AAVSO | |
| -3 | 10.3 | 2442036 | 1973-12-19 | 2441738 | 1973-02-24 | 298 | SVO |
| -2 | 10.8 | 2442501 | 1975-03-29 | 2442213 | 1974-06-14 | 288 | SVO |
| -1 | 10.6 | 2442973 | 1976-07-13 | 2442689 | 1975-10-03 | 284 | AAVSO |
| 0 | 11.6 | 2443432 | 1977-10-15 | 2443164 | 1977-01-20 | 268 | SVO |
| 1 | 10.8 | 2443872 | 1978-12-29 | 2443639 | 1978-05-10 | 233 | SVO |
| 2 | 10.3 | 2444341 | 1980-04-11 | 2444114 | 1979-08-28 | 227 | AAVSO |
| 3 | 10.9 | 2444822 | 1981-08-05 | 2444589 | 1980-12-15 | 233 | AAVSO |
| 4 | 10.3 | 2445265 | 1982-10-22 | 2445064 | 1982-04-04 | 201 | AAVSO |
| 5 | 10.4 | 2445722 | 1984-01-22 | 2445539 | 1983-07-23 | 183 | SVO |
| 6 | 10.1 | 2446188 | 1985-05-02 | 2446014 | 1984-11-09 | 174 | SVO |
| 7 | 10.6 | 2446664 | 1986-08-21 | 2446489 | 1986-02-27 | 175 | SVO |
| 8 | 9.9 | 2447126 | 1987-11-26 | 2446964 | 1987-06-17 | 162 | SVO |
| 9 | 11.2 | 2447576 | 1989-02-18 | 2447439 | 1988-10-04 | 137 | SVO |
| 10 | 10.3 | 2448047 | 1990-06-04 | 2447915 | 1990-01-23 | 132 | SVO |
| 11 | 2448529 | 1991-09-29 | 2448390 | 1991-05-13 | 139 | AAVSO | |
| 12 | 10.3 | 2448969 | 1992-12-12 | 2448865 | 1992-08-30 | 104 | SVO |
| 13 | 10.5 | 2449437 | 1994-03-25 | 2449340 | 1993-12-18 | 97 | SVO |
| 14 | 10.6 | 2449913 | 1995-07-14 | 2449815 | 1995-04-07 | 98 | SVO |
| 15 | 10.3 | 2450352 | 1996-09-25 | 2450290 | 1996-07-25 | 62 | SVO |
| 16 | 11.1 | 2450811 | 1997-12-28 | 2450765 | 1997-11-12 | 46 | SVO |
| 17 | 11.0 | 2451280 | 1999-04-11 | 2451240 | 1999-03-02 | 40 | SVO |
| 18 | 10.1 | 2451685 | 2000-05-20 | 2451715 | 2000-06-19 | -30 | SVO |
| 19 | 11.2 | 2452176 | 2001-09-23 | 2452190 | 2001-10-07 | -14 | SVO |
| 20 | 10.9 | 2452618 | 2002-12-09 | 2452666 | 2003-01-26 | -48 | SVO |
| 21 | 10.3 | 2453060 | 2004-02-24 | 2453141 | 2004-05-15 | -81 | SVO |
| 22 | 10.7 | 2453503 | 2005-05-12 | 2453616 | 2005-09-02 | -113 | SVO |
| 23 | 2453942 | 2006-07-25 | 2454091 | 2006-12-21 | -149 | AAVSO | |
| 24 | 10.5 | 2454399 | 2007-10-25 | 2454566 | 2008-04-09 | -167 | SVO |
| 25 | 10.4 | 2454835 | 2009-01-03 | 2455041 | 2009-07-28 | -206 | SVO |
| 26 | 10.5 | 2455276 | 2010-03-20 | 2455516 | 2010-11-15 | -240 | SVO |
| 27 | 10.6 | 2455740 | 2011-06-27 | 2455991 | 2012-03-04 | -251 | SVO |
| 28 | 10.8 | 2456174 | 2012-09-03 | 2456466 | 2013-06-22 | -292 | SVO |
| 29 | 10.3 | 2456633 | 2013-12-06 | 2456941 | 2014-10-10 | -308 | SVO |
| 30 | 10.4 | 2457080 | 2015-02-26 | 2457416 | 2016-01-28 | -336 | SVO |
| 31 | 10.4 | 2457522 | 2016-05-13 | 2457892 | 2017-05-18 | -370 | SVO |
| 32 | 10.2 | 2457972 | 2017-08-06 | 2458367 | 2018-09-05 | -395 | SVO |
| 33 | 10.8 | 2458439 | 2018-11-16 | 2458842 | 2019-12-24 | -403 | SVO |
| 34 | 10.1 | 2458880 | 2020-01-31 | 2459317 | 2021-04-12 | -437 | SVO |
| 35 | 10.2 | 2459336 | 2021-05-01 | 2459792 | 2022-07-31 | -456 | SVO |
| 36 | 10.1 | 2459765 | 2022-07-04 | 2460267 | 2023-11-18 | -502 | SVO |
| 37 | 10.3 | 2460205 | 2023-09-17 | 2460742 | 2025-03-07 | -537 | SVO |
| 38 | 10.2 | 2460657 | 2024-12-12 | 2461217 | 2026-06-25 | -560 | 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. |