Maxima for Z Lyr
Period: 288.27, Epoch: 2445235.0
AAVSO offset: 4

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-113   2412650 1893-07-05 2412661 1893-07-16 -11 SVO
-105   2414980 1899-11-21 2414967 1899-11-08 13 AnHar, 1909, vol 55, p 95
-104   2415265 1900-09-02 2415255 1900-08-23 10 AnHar, 1909, vol 55, p 95
-103   2415567 1901-07-01 2415544 1901-06-08 23 AnHar, 1909, vol 55, p 95
-102   2415847 1902-04-07 2415832 1902-03-23 15 AnHar, 1909, vol 55, p 95
-100   2416429 1903-11-10 2416408 1903-10-20 21 AnHar, 1909, vol 55, p 95
-99   2416736 1904-09-12 2416697 1904-08-04 39 AAVSO
-98   2417016 1905-06-19 2416985 1905-05-19 31 AAVSO
-96 10.0 2417574 1906-12-29 2417562 1906-12-17 12 AAVSO
-95 10.0 2417861 1907-10-12 2417850 1907-10-01 11 AAVSO
-94 9.3 2418150 1908-07-27 2418138 1908-07-15 12 AAVSO
-93 9.5 2418438 1909-05-11 2418426 1909-04-29 12 AAVSO
-92   2418740 1910-03-09 2418715 1910-02-12 25 AAVSO
-91   2419015 1910-12-09 2419003 1910-11-27 12 AAVSO
-90 10.2 2419295 1911-09-15 2419291 1911-09-11 4 SVO
-89 10.6 2419588 1912-07-04 2419579 1912-06-25 9 SVO
-88 10.3 2419857 1913-03-30 2419868 1913-04-10 -11 AAVSO
-87 9.6 2420145 1914-01-12 2420156 1914-01-23 -11 AAVSO
-85   2420722 1915-08-12 2420732 1915-08-22 -10 AAVSO
-84 10.0 2421013 1916-05-29 2421021 1916-06-06 -8 AAVSO
-83   2421287 1917-02-27 2421309 1917-03-21 -22 AAVSO
-82   2421573 1917-12-10 2421597 1918-01-03 -24 AAVSO
-81 11.0 2421862 1918-09-25 2421886 1918-10-19 -24 AAVSO
-80 9.5 2422139 1919-06-29 2422174 1919-08-03 -35 AAVSO
-79 9.8 2422429 1920-04-14 2422462 1920-05-17 -33 AAVSO
-78   2422736 1921-02-15 2422750 1921-03-01 -14 AAVSO
-77 10.6 2423012 1921-11-18 2423039 1921-12-15 -27 SVO
-76 10.4 2423303 1922-09-05 2423327 1922-09-29 -24 SVO
-75 10.1 2423596 1923-06-25 2423615 1923-07-14 -19 SVO
-74 10.6 2423890 1924-04-14 2423903 1924-04-27 -13 AAVSO
-73 9.9 2424194 1925-02-12 2424192 1925-02-10 2 AAVSO
-72 10.2 2424473 1925-11-18 2424480 1925-11-25 -7 SVO
-71 10.1 2424763 1926-09-04 2424768 1926-09-09 -5 AAVSO
-70 9.8 2425053 1927-06-21 2425056 1927-06-24 -3 SVO
-69 10.3 2425339 1928-04-02 2425345 1928-04-08 -6 SVO
-68 10.2 2425636 1929-01-24 2425633 1929-01-21 3 SVO
-67 10.3 2425923 1929-11-07 2425921 1929-11-05 2 SVO
-66 9.9 2426214 1930-08-25 2426210 1930-08-21 4 SVO
-65 10.3 2426511 1931-06-18 2426498 1931-06-05 13 SVO
-64 10.4 2426808 1932-04-10 2426786 1932-03-19 22 SVO
-63 10.2 2427102 1933-01-29 2427074 1933-01-01 28 SVO
-62 10.0 2427396 1933-11-19 2427363 1933-10-17 33 SVO
-61 10.6 2427690 1934-09-09 2427651 1934-08-01 39 SVO
-60 9.8 2427974 1935-06-20 2427939 1935-05-16 35 SVO
-59   2428263 1936-04-04 2428227 1936-02-28 36 AAVSO
-58   2428557 1937-01-23 2428516 1936-12-13 41 AAVSO
-57 10.0 2428844 1937-11-06 2428804 1937-09-27 40 SVO
-56 10.7 2429137 1938-08-26 2429092 1938-07-12 45 SVO
-55 10.2 2429432 1939-06-17 2429380 1939-04-26 52 SVO
-54   2429719 1940-03-30 2429669 1940-02-09 50 AAVSO
-53   2430003 1941-01-08 2429957 1940-11-23 46 AAVSO
-52 10.0 2430279 1941-10-11 2430245 1941-09-07 34 SVO
-51 10.2 2430569 1942-07-28 2430534 1942-06-23 35 SVO
-50 10.2 2430855 1943-05-10 2430822 1943-04-07 33 AAVSO
-49   2431127 1944-02-06 2431110 1944-01-20 17 AAVSO
-48 10.4 2431413 1944-11-18 2431398 1944-11-03 15 AAVSO
-47 10.0 2431702 1945-09-03 2431687 1945-08-19 15 SVO
-46 10.6 2431983 1946-06-11 2431975 1946-06-03 8 AAVSO
-45   2432269 1947-03-24 2432263 1947-03-18 6 AAVSO
-44 10.4 2432553 1948-01-02 2432551 1947-12-31 2 AAVSO
-43 10.3 2432839 1948-10-14 2432840 1948-10-15 -1 SVO
-42 10.2 2433124 1949-07-26 2433128 1949-07-30 -4 SVO
-41 10.4 2433413 1950-05-11 2433416 1950-05-14 -3 AAVSO
-40   2433693 1951-02-15 2433704 1951-02-26 -11 AAVSO
-39 10.2 2433972 1951-11-21 2433993 1951-12-12 -21 AAVSO
-38 10.7 2434262 1952-09-06 2434281 1952-09-25 -19 SVO
-37 10.2 2434545 1953-06-16 2434569 1953-07-10 -24 SVO
-36 11.0 2434825 1954-03-23 2434857 1954-04-24 -32 AAVSO
-35 10.2 2435114 1955-01-06 2435146 1955-02-07 -32 SVO
-34 10.2 2435393 1955-10-12 2435434 1955-11-22 -41 SVO
-33 10.0 2435675 1956-07-20 2435722 1956-09-05 -47 SVO
-32 10.2 2435960 1957-05-01 2436011 1957-06-21 -51 AAVSO
-31 10.2 2436249 1958-02-14 2436299 1958-04-05 -50 SVO
-30 10.4 2436518 1958-11-10 2436587 1959-01-18 -69 AAVSO
-29 10.0 2436809 1959-08-28 2436875 1959-11-02 -66 SVO
-28 10.4 2437100 1960-06-14 2437164 1960-08-17 -64 SVO
-27   2437384 1961-03-25 2437452 1961-06-01 -68 AAVSO
-26 10.0 2437671 1962-01-06 2437740 1962-03-16 -69 AAVSO
-25 10.1 2437965 1962-10-27 2438028 1962-12-29 -63 AAVSO
-24 10.5 2438262 1963-08-20 2438317 1963-10-14 -55 SVO
-23 9.9 2438553 1964-06-06 2438605 1964-07-28 -52 SVO
-22 10.6 2438839 1965-03-19 2438893 1965-05-12 -54 AAVSO
-21 10.5 2439127 1966-01-01 2439181 1966-02-24 -54 SVO
-20 10.3 2439424 1966-10-25 2439470 1966-12-10 -46 SVO
-19 10.1 2439714 1967-08-11 2439758 1967-09-24 -44 SVO
-18 9.9 2440008 1968-05-31 2440046 1968-07-08 -38 SVO
-17 10.4 2440299 1969-03-18 2440335 1969-04-23 -36 AAVSO
-16 10.6 2440597 1970-01-10 2440623 1970-02-05 -26 SVO
-15 10.2 2440895 1970-11-04 2440911 1970-11-20 -16 SVO
-14 9.7 2441178 1971-08-14 2441199 1971-09-04 -21 SVO
-13 10.5 2441475 1972-06-06 2441488 1972-06-19 -13 SVO
-12 9.3 2441753 1973-03-11 2441776 1973-04-03 -23 AAVSO
-11 10.0 2442053 1974-01-05 2442064 1974-01-16 -11 AAVSO
-10 9.9 2442352 1974-10-31 2442352 1974-10-31 0 SVO
-9 10.6 2442644 1975-08-19 2442641 1975-08-16 3 SVO
-8 10.4 2442942 1976-06-12 2442929 1976-05-30 13 SVO
-7 9.8 2443222 1977-03-19 2443217 1977-03-14 5 AAVSO
-6 11.4 2443514 1978-01-05 2443505 1977-12-27 9 AAVSO
-5 10.5 2443814 1978-11-01 2443794 1978-10-12 20 AAVSO
-4 9.8 2444107 1979-08-21 2444082 1979-07-27 25 SVO
-3 10.1 2444392 1980-06-01 2444370 1980-05-10 22 SVO
-2 10.1 2444675 1981-03-11 2444659 1981-02-23 16 AAVSO
-1 10.2 2444977 1982-01-07 2444947 1981-12-08 30 SVO
0 10.1 2445270 1982-10-27 2445235 1982-09-22 35 SVO
1 10.1 2445563 1983-08-16 2445523 1983-07-07 40 SVO
2 10.2 2445860 1984-06-08 2445812 1984-04-21 48 SVO
3 10.0 2446149 1985-03-24 2446100 1985-02-03 49 AAVSO
4 10.7 2446456 1986-01-25 2446388 1985-11-18 68 SVO
5 10.5 2446729 1986-10-25 2446676 1986-09-02 53 SVO
6 10.3 2447009 1987-08-01 2446965 1987-06-18 44 SVO
7 10.1 2447294 1988-05-12 2447253 1988-04-01 41 SVO
8 10.7 2447581 1989-02-23 2447541 1989-01-14 40 SVO
9   2447860 1989-11-29 2447829 1989-10-29 31 AAVSO
10 10.4 2448151 1990-09-16 2448118 1990-08-14 33 SVO
11 10.5 2448430 1991-06-22 2448406 1991-05-29 24 SVO
12   2448718 1992-04-05 2448694 1992-03-12 24 AAVSO
13 10.4 2449003 1993-01-15 2448982 1992-12-25 21 SVO
14 9.9 2449270 1993-10-09 2449271 1993-10-10 -1 SVO
15 10.5 2449558 1994-07-24 2449559 1994-07-25 -1 SVO
16 10.1 2449839 1995-05-01 2449847 1995-05-09 -8 SVO
17 10.6 2450131 1996-02-17 2450136 1996-02-22 -5 SVO
18 10.3 2450417 1996-11-29 2450424 1996-12-06 -7 SVO
19 10.6 2450709 1997-09-17 2450712 1997-09-20 -3 SVO
20 10.2 2450995 1998-06-30 2451000 1998-07-05 -5 SVO
21 10.3 2451283 1999-04-14 2451289 1999-04-20 -6 SVO
22 10.6 2451564 2000-01-20 2451577 2000-02-02 -13 SVO
23 10.2 2451842 2000-10-24 2451865 2000-11-16 -23 SVO
24 10.5 2452136 2001-08-14 2452153 2001-08-31 -17 SVO
25 10.3 2452421 2002-05-26 2452442 2002-06-16 -21 SVO
26 10.4 2452708 2003-03-09 2452730 2003-03-31 -22 SVO
27   2453011 2004-01-06 2453018 2004-01-13 -7 AAVSO
28 10.5 2453291 2004-10-12 2453306 2004-10-27 -15 SVO
29 9.9 2453581 2005-07-29 2453595 2005-08-12 -14 SVO
30 10.7 2453877 2006-05-21 2453883 2006-05-27 -6 SVO
31 10.1 2454167 2007-03-07 2454171 2007-03-11 -4 SVO
32 10.4 2454451 2007-12-16 2454460 2007-12-25 -9 SVO
33 10.1 2454736 2008-09-26 2454748 2008-10-08 -12 SVO
34 9.9 2455026 2009-07-13 2455036 2009-07-23 -10 SVO
35 10.4 2455315 2010-04-28 2455324 2010-05-07 -9 SVO
36 10.1 2455605 2011-02-12 2455613 2011-02-20 -8 SVO
37 10.1 2455892 2011-11-26 2455901 2011-12-05 -9 SVO
38 10.4 2456186 2012-09-15 2456189 2012-09-18 -3 SVO
39 9.7 2456473 2013-06-29 2456477 2013-07-03 -4 SVO
40 10.2 2456760 2014-04-12 2456766 2014-04-18 -6 SVO
41 10.1 2457051 2015-01-28 2457054 2015-01-31 -3 SVO
42 10.4 2457344 2015-11-17 2457342 2015-11-15 2 SVO
43 10.0 2457632 2016-08-31 2457630 2016-08-29 2 SVO
44 10.6 2457931 2017-06-26 2457919 2017-06-14 12 SVO
45 9.8 2458220 2018-04-11 2458207 2018-03-29 13 SVO
46 10.8 2458521 2019-02-06 2458495 2019-01-11 26 SVO
47 10.1 2458809 2019-11-21 2458784 2019-10-27 25 SVO
48 10.1 2459104 2020-09-11 2459072 2020-08-10 32 SVO
49 10.1 2459396 2021-06-30 2459360 2021-05-25 36 SVO
50 9.8 2459683 2022-04-13 2459648 2022-03-09 35 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.