Maxima for Z Tau
Period: 446, Epoch: 2453058
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E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-80   2415105 1900-03-26 2417378 1906-06-16 -2273 AnHar, 1909, vol 55, p 95
-78   2416130 1903-01-15 2418270 1908-11-24 -2140 AnHar, 1909, vol 55, p 95
-77   2416633 1904-06-01 2418716 1910-02-13 -2083 GuL, 1918, 1.1
-76   2417113 1905-09-24 2419162 1911-05-05 -2049 AAVSO
-75   2417614 1907-02-07 2419608 1912-07-24 -1994 AAVSO
-73 9.2 2418620 1909-11-09 2420500 1915-01-02 -1880 AAVSO
-71   2419604 1912-07-20 2421392 1917-06-12 -1788 AAVSO
-69   2420604 1915-04-16 2422284 1919-11-21 -1680 AAVSO
-68   2421112 1916-09-05 2422730 1921-02-09 -1618 AAVSO
-67   2421620 1918-01-26 2423176 1922-05-01 -1556 AAVSO
-66   2422105 1919-05-26 2423622 1923-07-21 -1517 AAVSO
-65 9.5 2422606 1920-10-08 2424068 1924-10-09 -1462 AAVSO
-64 10.9 2423116 1922-03-02 2424514 1925-12-29 -1398 AAVSO
-63   2423614 1923-07-13 2424960 1927-03-20 -1346 AAVSO
-62 11.1 2424118 1924-11-28 2425406 1928-06-08 -1288 SVO
-61 10.1 2424616 1926-04-10 2425852 1929-08-28 -1236 AAVSO
-60   2425113 1927-08-20 2426298 1930-11-17 -1185 AAVSO
-59 10.0 2425637 1929-01-25 2426744 1932-02-06 -1107 SVO
-58   2426132 1930-06-04 2427190 1933-04-27 -1058 AAVSO
-57 10.7 2426611 1931-09-26 2427636 1934-07-17 -1025 AAVSO
-56 10.3 2427100 1933-01-27 2428082 1935-10-06 -982 SVO
-55 10.1 2427583 1934-05-25 2428528 1936-12-25 -945 SVO
-54 10.3 2428066 1935-09-20 2428974 1938-03-16 -908 AAVSO
-53 10.7 2428566 1937-02-01 2429420 1939-06-05 -854 SVO
-52 10.4 2429052 1938-06-02 2429866 1940-08-24 -814 SVO
-51 10.7 2429533 1939-09-26 2430312 1941-11-13 -779 AAVSO
-50 10.6 2430022 1941-01-27 2430758 1943-02-02 -736 SVO
-49 10.3 2430488 1942-05-08 2431204 1944-04-23 -716 SVO
-48 10.6 2430977 1943-09-09 2431650 1945-07-13 -673 AAVSO
-47 10.5 2431474 1945-01-18 2432096 1946-10-02 -622 AAVSO
-46 10.0 2431952 1946-05-11 2432542 1947-12-22 -590 AAVSO
-44 11.3 2432939 1949-01-22 2433434 1950-06-01 -495 SVO
-43 10.0 2433415 1950-05-13 2433880 1951-08-21 -465 AAVSO
-42 12.1 2433918 1951-09-28 2434326 1952-11-09 -408 AAVSO
-41 10.4 2434398 1953-01-20 2434772 1954-01-29 -374 SVO
-40   2434881 1954-05-18 2435218 1955-04-20 -337 AAVSO
-39 12.2 2435380 1955-09-29 2435664 1956-07-09 -284 AAVSO
-38 11.0 2435870 1957-01-31 2436110 1957-09-28 -240 SVO
-37   2436339 1958-05-15 2436556 1958-12-18 -217 AAVSO
-36 10.7 2436836 1959-09-24 2437002 1960-03-08 -166 AAVSO
-35 9.9 2437308 1961-01-08 2437448 1961-05-28 -140 SVO
-34 10.3 2437791 1962-05-06 2437894 1962-08-17 -103 AAVSO
-33 11.3 2438276 1963-09-03 2438340 1963-11-06 -64 AAVSO
-32 10.2 2438762 1965-01-01 2438786 1965-01-25 -24 SVO
-31 9.7 2439221 1966-04-05 2439232 1966-04-16 -11 SVO
-30   2439693 1967-07-21 2439678 1967-07-06 15 AAVSO
-29 9.8 2440167 1968-11-06 2440124 1968-09-24 43 SVO
-28 11.2 2440631 1970-02-13 2440570 1969-12-14 61 AAVSO
-27   2441104 1971-06-01 2441016 1971-03-05 88 AAVSO
-26   2441542 1972-08-12 2441462 1972-05-24 80 AAVSO
-25 10.3 2442036 1973-12-19 2441908 1973-08-13 128 SVO
-24 10.8 2442501 1975-03-29 2442354 1974-11-02 147 SVO
-23 10.6 2442973 1976-07-13 2442800 1976-01-22 173 AAVSO
-22 11.6 2443432 1977-10-15 2443246 1977-04-12 186 SVO
-21 10.8 2443872 1978-12-29 2443692 1978-07-02 180 SVO
-20 10.3 2444341 1980-04-11 2444138 1979-09-21 203 AAVSO
-19 10.9 2444822 1981-08-05 2444584 1980-12-10 238 AAVSO
-18 10.3 2445265 1982-10-22 2445030 1982-03-01 235 AAVSO
-17 10.4 2445722 1984-01-22 2445476 1983-05-21 246 SVO
-16 10.1 2446188 1985-05-02 2445922 1984-08-09 266 SVO
-15 10.6 2446664 1986-08-21 2446368 1985-10-29 296 SVO
-14 9.9 2447126 1987-11-26 2446814 1987-01-18 312 SVO
-13 11.2 2447576 1989-02-18 2447260 1988-04-08 316 SVO
-12 10.3 2448047 1990-06-04 2447706 1989-06-28 341 SVO
-11   2448529 1991-09-29 2448152 1990-09-17 377 AAVSO
-10 10.3 2448969 1992-12-12 2448598 1991-12-07 371 SVO
-9 10.5 2449437 1994-03-25 2449044 1993-02-25 393 SVO
-8 10.6 2449913 1995-07-14 2449490 1994-05-17 423 SVO
-7 10.3 2450352 1996-09-25 2449936 1995-08-06 416 SVO
-6 11.1 2450811 1997-12-28 2450382 1996-10-25 429 SVO
-5 11.0 2451280 1999-04-11 2450828 1998-01-14 452 SVO
-4 10.1 2451685 2000-05-20 2451274 1999-04-05 411 SVO
-3 11.2 2452176 2001-09-23 2451720 2000-06-24 456 SVO
-2 10.9 2452618 2002-12-09 2452166 2001-09-13 452 SVO
-1 10.3 2453060 2004-02-24 2452612 2002-12-03 448 SVO
0 10.7 2453503 2005-05-12 2453058 2004-02-22 445 SVO
1   2453942 2006-07-25 2453504 2005-05-13 438 AAVSO
2 10.5 2454399 2007-10-25 2453950 2006-08-02 449 SVO
3 10.4 2454835 2009-01-03 2454396 2007-10-22 439 SVO
4 10.5 2455276 2010-03-20 2454842 2009-01-10 434 SVO
5 10.6 2455740 2011-06-27 2455288 2010-04-01 452 SVO
6 10.8 2456174 2012-09-03 2455734 2011-06-21 440 SVO
7 10.3 2456633 2013-12-06 2456180 2012-09-09 453 SVO
8 10.4 2457080 2015-02-26 2456626 2013-11-29 454 SVO
9 10.4 2457522 2016-05-13 2457072 2015-02-18 450 SVO
10 10.5 2457972 2017-08-06 2457518 2016-05-09 454 AAVSO
11 10.8 2458439 2018-11-16 2457964 2017-07-29 475 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.