Maxima for Z Tau
Period: 466.2, Epoch: 2443436
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E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-58   2415105 1900-03-26 2416396 1903-10-08 -1291 AnHar, 1909, vol 55, p 95
-56   2416130 1903-01-15 2417329 1906-04-28 -1199 AnHar, 1909, vol 55, p 95
-55   2416633 1904-06-01 2417795 1907-08-07 -1162 GuL, 1918, 1.1
-54   2417113 1905-09-24 2418261 1908-11-15 -1148 AAVSO
-53   2417614 1907-02-07 2418727 1910-02-24 -1113 AAVSO
-51 9.2 2418620 1909-11-09 2419660 1912-09-14 -1040 AAVSO
-49   2419604 1912-07-20 2420592 1915-04-04 -988 AAVSO
-47   2420604 1915-04-16 2421525 1917-10-23 -921 AAVSO
-46   2421112 1916-09-05 2421991 1919-02-01 -879 AAVSO
-45   2421620 1918-01-26 2422457 1920-05-12 -837 AAVSO
-44   2422105 1919-05-26 2422923 1921-08-21 -818 AAVSO
-43 9.5 2422606 1920-10-08 2423389 1922-11-30 -783 AAVSO
-42 10.9 2423116 1922-03-02 2423856 1924-03-11 -740 AAVSO
-41   2423614 1923-07-13 2424322 1925-06-20 -708 AAVSO
-40 11.1 2424118 1924-11-28 2424788 1926-09-29 -670 SVO
-39 10.1 2424616 1926-04-10 2425254 1928-01-08 -638 AAVSO
-38   2425113 1927-08-20 2425720 1929-04-18 -607 AAVSO
-37 10.0 2425637 1929-01-25 2426187 1930-07-29 -550 SVO
-36   2426132 1930-06-04 2426653 1931-11-07 -521 AAVSO
-35 10.7 2426611 1931-09-26 2427119 1933-02-15 -508 AAVSO
-34 10.3 2427100 1933-01-27 2427585 1934-05-27 -485 SVO
-33 10.1 2427583 1934-05-25 2428051 1935-09-05 -468 SVO
-32 10.3 2428066 1935-09-20 2428518 1936-12-15 -452 AAVSO
-31 10.7 2428566 1937-02-01 2428984 1938-03-26 -418 SVO
-30 10.4 2429052 1938-06-02 2429450 1939-07-05 -398 SVO
-29 10.7 2429533 1939-09-26 2429916 1940-10-13 -383 AAVSO
-28 10.6 2430022 1941-01-27 2430382 1942-01-22 -360 SVO
-27 10.3 2430488 1942-05-08 2430849 1943-05-04 -361 SVO
-26 10.6 2430977 1943-09-09 2431315 1944-08-12 -338 AAVSO
-25 10.5 2431474 1945-01-18 2431781 1945-11-21 -307 AAVSO
-24 10.0 2431952 1946-05-11 2432247 1947-03-02 -295 AAVSO
-22 11.3 2432939 1949-01-22 2433180 1949-09-20 -241 SVO
-21 10.0 2433415 1950-05-13 2433646 1950-12-30 -231 AAVSO
-20 12.1 2433918 1951-09-28 2434112 1952-04-09 -194 AAVSO
-19 10.4 2434398 1953-01-20 2434578 1953-07-19 -180 SVO
-18   2434881 1954-05-18 2435044 1954-10-28 -163 AAVSO
-17 12.2 2435380 1955-09-29 2435511 1956-02-07 -131 AAVSO
-16 11.0 2435870 1957-01-31 2435977 1957-05-18 -107 SVO
-15   2436339 1958-05-15 2436443 1958-08-27 -104 AAVSO
-14 10.7 2436836 1959-09-24 2436909 1959-12-06 -73 AAVSO
-13 9.9 2437308 1961-01-08 2437375 1961-03-16 -67 SVO
-12 10.3 2437791 1962-05-06 2437842 1962-06-26 -51 AAVSO
-11 11.3 2438276 1963-09-03 2438308 1963-10-05 -32 AAVSO
-10 10.2 2438762 1965-01-01 2438774 1965-01-13 -12 SVO
-9 9.7 2439221 1966-04-05 2439240 1966-04-24 -19 SVO
-8   2439693 1967-07-21 2439706 1967-08-03 -13 AAVSO
-7 9.8 2440167 1968-11-06 2440173 1968-11-12 -6 SVO
-6 11.2 2440631 1970-02-13 2440639 1970-02-21 -8 AAVSO
-5   2441104 1971-06-01 2441105 1971-06-02 -1 AAVSO
-4   2441542 1972-08-12 2441571 1972-09-10 -29 AAVSO
-3 10.3 2442036 1973-12-19 2442037 1973-12-20 -1 SVO
-2 10.8 2442501 1975-03-29 2442504 1975-04-01 -3 SVO
-1 10.6 2442973 1976-07-13 2442970 1976-07-10 3 AAVSO
0 11.6 2443432 1977-10-15 2443436 1977-10-19 -4 SVO
1 10.8 2443872 1978-12-29 2443902 1979-01-28 -30 SVO
2 10.3 2444341 1980-04-11 2444368 1980-05-08 -27 AAVSO
3 10.9 2444822 1981-08-05 2444835 1981-08-18 -13 AAVSO
4 10.3 2445265 1982-10-22 2445301 1982-11-27 -36 AAVSO
5 10.4 2445722 1984-01-22 2445767 1984-03-07 -45 SVO
6 10.1 2446188 1985-05-02 2446233 1985-06-16 -45 SVO
7 10.6 2446664 1986-08-21 2446699 1986-09-25 -35 SVO
8 9.9 2447126 1987-11-26 2447166 1988-01-05 -40 SVO
9 11.2 2447576 1989-02-18 2447632 1989-04-15 -56 SVO
10 10.3 2448047 1990-06-04 2448098 1990-07-25 -51 SVO
11   2448529 1991-09-29 2448564 1991-11-03 -35 AAVSO
12 10.3 2448969 1992-12-12 2449030 1993-02-11 -61 SVO
13 10.5 2449437 1994-03-25 2449497 1994-05-24 -60 SVO
14 10.6 2449913 1995-07-14 2449963 1995-09-02 -50 SVO
15 10.3 2450352 1996-09-25 2450429 1996-12-11 -77 SVO
16 11.1 2450811 1997-12-28 2450895 1998-03-22 -84 SVO
17 11.0 2451280 1999-04-11 2451361 1999-07-01 -81 SVO
18 10.1 2451685 2000-05-20 2451828 2000-10-10 -143 SVO
19 11.2 2452176 2001-09-23 2452294 2002-01-19 -118 SVO
20 10.9 2452618 2002-12-09 2452760 2003-04-30 -142 SVO
21 10.3 2453060 2004-02-24 2453226 2004-08-08 -166 SVO
22 10.7 2453503 2005-05-12 2453692 2005-11-17 -189 SVO
23   2453942 2006-07-25 2454159 2007-02-27 -217 AAVSO
24 10.5 2454399 2007-10-25 2454625 2008-06-07 -226 SVO
25 10.4 2454835 2009-01-03 2455091 2009-09-16 -256 SVO
26 10.5 2455276 2010-03-20 2455557 2010-12-26 -281 SVO
27 10.6 2455740 2011-06-27 2456023 2012-04-05 -283 SVO
28 10.8 2456174 2012-09-03 2456490 2013-07-16 -316 SVO
29 10.3 2456633 2013-12-06 2456956 2014-10-25 -323 SVO
30 10.4 2457080 2015-02-26 2457422 2016-02-03 -342 SVO
31 10.4 2457522 2016-05-13 2457888 2017-05-14 -366 SVO
32 10.5 2457972 2017-08-06 2458354 2018-08-23 -382 AAVSO
33 10.8 2458439 2018-11-16 2458821 2019-12-03 -382 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.