Maxima for Z Lyr
Period: 288.31, Epoch: 2445237.4
AAVSO offset: 4

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-113   2412650 1893-07-05 2412658 1893-07-13 -8 SVO
-105   2414980 1899-11-21 2414965 1899-11-06 15 AnHar, 1909, vol 55, p 95
-104   2415265 1900-09-02 2415253 1900-08-21 12 AnHar, 1909, vol 55, p 95
-103   2415567 1901-07-01 2415541 1901-06-05 26 AnHar, 1909, vol 55, p 95
-102   2415847 1902-04-07 2415830 1902-03-21 17 AnHar, 1909, vol 55, p 95
-100   2416429 1903-11-10 2416406 1903-10-18 23 AnHar, 1909, vol 55, p 95
-99   2416736 1904-09-12 2416695 1904-08-02 41 AAVSO
-98   2417016 1905-06-19 2416983 1905-05-17 33 AAVSO
-96 10.0 2417574 1906-12-29 2417560 1906-12-15 14 AAVSO
-95 10.0 2417861 1907-10-12 2417848 1907-09-29 13 AAVSO
-94 9.3 2418150 1908-07-27 2418136 1908-07-13 14 AAVSO
-93 9.5 2418438 1909-05-11 2418425 1909-04-28 13 AAVSO
-92   2418740 1910-03-09 2418713 1910-02-10 27 AAVSO
-91   2419015 1910-12-09 2419001 1910-11-25 14 AAVSO
-90 10.2 2419295 1911-09-15 2419289 1911-09-09 6 SVO
-89 10.6 2419588 1912-07-04 2419578 1912-06-24 10 SVO
-88 10.3 2419857 1913-03-30 2419866 1913-04-08 -9 AAVSO
-87 9.6 2420145 1914-01-12 2420154 1914-01-21 -9 AAVSO
-85   2420722 1915-08-12 2420731 1915-08-21 -9 AAVSO
-84 10.0 2421013 1916-05-29 2421019 1916-06-04 -6 AAVSO
-83   2421287 1917-02-27 2421308 1917-03-20 -21 AAVSO
-82   2421573 1917-12-10 2421596 1918-01-02 -23 AAVSO
-81 11.0 2421862 1918-09-25 2421884 1918-10-17 -22 AAVSO
-80 9.5 2422139 1919-06-29 2422173 1919-08-02 -34 AAVSO
-79 9.8 2422429 1920-04-14 2422461 1920-05-16 -32 AAVSO
-78   2422736 1921-02-15 2422749 1921-02-28 -13 AAVSO
-77 10.6 2423012 1921-11-18 2423037 1921-12-13 -25 SVO
-76 10.4 2423303 1922-09-05 2423326 1922-09-28 -23 SVO
-75 10.1 2423596 1923-06-25 2423614 1923-07-13 -18 SVO
-74 10.6 2423890 1924-04-14 2423902 1924-04-26 -12 AAVSO
-73 9.9 2424194 1925-02-12 2424191 1925-02-09 3 AAVSO
-72 10.2 2424473 1925-11-18 2424479 1925-11-24 -6 SVO
-71 10.1 2424763 1926-09-04 2424767 1926-09-08 -4 AAVSO
-70 9.8 2425053 1927-06-21 2425056 1927-06-24 -3 SVO
-69 10.3 2425339 1928-04-02 2425344 1928-04-07 -5 SVO
-68 10.2 2425636 1929-01-24 2425632 1929-01-20 4 SVO
-67 10.3 2425923 1929-11-07 2425921 1929-11-05 2 SVO
-66 9.9 2426214 1930-08-25 2426209 1930-08-20 5 SVO
-65 10.3 2426511 1931-06-18 2426497 1931-06-04 14 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 2427362 1933-10-16 34 SVO
-61 10.6 2427690 1934-09-09 2427650 1934-07-31 40 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 2428515 1936-12-12 42 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 2432552 1948-01-01 1 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 2433417 1950-05-15 -4 AAVSO
-40   2433693 1951-02-15 2433705 1951-02-27 -12 AAVSO
-39 10.2 2433972 1951-11-21 2433993 1951-12-12 -21 AAVSO
-38 10.7 2434262 1952-09-06 2434282 1952-09-26 -20 SVO
-37 10.2 2434545 1953-06-16 2434570 1953-07-11 -25 SVO
-36 11.0 2434825 1954-03-23 2434858 1954-04-25 -33 AAVSO
-35 10.2 2435114 1955-01-06 2435147 1955-02-08 -33 SVO
-34 10.2 2435393 1955-10-12 2435435 1955-11-23 -42 SVO
-33 10.0 2435675 1956-07-20 2435723 1956-09-06 -48 SVO
-32 10.2 2435960 1957-05-01 2436011 1957-06-21 -51 AAVSO
-31 10.2 2436249 1958-02-14 2436300 1958-04-06 -51 SVO
-30 10.4 2436518 1958-11-10 2436588 1959-01-19 -70 AAVSO
-29 10.0 2436809 1959-08-28 2436876 1959-11-03 -67 SVO
-28 10.4 2437100 1960-06-14 2437165 1960-08-18 -65 SVO
-27   2437384 1961-03-25 2437453 1961-06-02 -69 AAVSO
-26 10.0 2437671 1962-01-06 2437741 1962-03-17 -70 AAVSO
-25 10.1 2437965 1962-10-27 2438030 1962-12-31 -65 AAVSO
-24 10.5 2438262 1963-08-20 2438318 1963-10-15 -56 SVO
-23 9.9 2438553 1964-06-06 2438606 1964-07-29 -53 SVO
-22 10.6 2438839 1965-03-19 2438895 1965-05-14 -56 AAVSO
-21 10.5 2439127 1966-01-01 2439183 1966-02-26 -56 SVO
-20 10.3 2439424 1966-10-25 2439471 1966-12-11 -47 SVO
-19 10.1 2439714 1967-08-11 2439759 1967-09-25 -45 SVO
-18 9.9 2440008 1968-05-31 2440048 1968-07-10 -40 SVO
-17 10.4 2440299 1969-03-18 2440336 1969-04-24 -37 AAVSO
-16 10.6 2440597 1970-01-10 2440624 1970-02-06 -27 SVO
-15 10.2 2440895 1970-11-04 2440913 1970-11-22 -18 SVO
-14 9.7 2441178 1971-08-14 2441201 1971-09-06 -23 SVO
-13 10.5 2441475 1972-06-06 2441489 1972-06-20 -14 SVO
-12 9.3 2441753 1973-03-11 2441778 1973-04-05 -25 AAVSO
-11 10.0 2442053 1974-01-05 2442066 1974-01-18 -13 AAVSO
-10 9.9 2442352 1974-10-31 2442354 1974-11-02 -2 SVO
-9 10.6 2442644 1975-08-19 2442643 1975-08-18 1 SVO
-8 10.4 2442942 1976-06-12 2442931 1976-06-01 11 SVO
-7 9.8 2443222 1977-03-19 2443219 1977-03-16 3 AAVSO
-6 11.4 2443514 1978-01-05 2443508 1977-12-30 6 AAVSO
-5 10.5 2443814 1978-11-01 2443796 1978-10-14 18 AAVSO
-4 9.8 2444107 1979-08-21 2444084 1979-07-29 23 SVO
-3 10.1 2444392 1980-06-01 2444372 1980-05-12 20 SVO
-2 10.1 2444675 1981-03-11 2444661 1981-02-25 14 AAVSO
-1 10.2 2444977 1982-01-07 2444949 1981-12-10 28 SVO
0 10.1 2445270 1982-10-27 2445237 1982-09-24 33 SVO
1 10.1 2445563 1983-08-16 2445526 1983-07-10 37 SVO
2 10.2 2445860 1984-06-08 2445814 1984-04-23 46 SVO
3 10.0 2446149 1985-03-24 2446102 1985-02-05 47 AAVSO
4 10.7 2446456 1986-01-25 2446391 1985-11-21 65 SVO
5 10.5 2446729 1986-10-25 2446679 1986-09-05 50 SVO
6 10.3 2447009 1987-08-01 2446967 1987-06-20 42 SVO
7 10.1 2447294 1988-05-12 2447256 1988-04-04 38 SVO
8 10.7 2447581 1989-02-23 2447544 1989-01-17 37 SVO
9   2447860 1989-11-29 2447832 1989-11-01 28 AAVSO
10 10.4 2448151 1990-09-16 2448120 1990-08-16 31 SVO
11 10.5 2448430 1991-06-22 2448409 1991-06-01 21 SVO
12   2448718 1992-04-05 2448697 1992-03-15 21 AAVSO
13 10.4 2449003 1993-01-15 2448985 1992-12-28 18 SVO
14 9.9 2449270 1993-10-09 2449274 1993-10-13 -4 SVO
15 10.5 2449558 1994-07-24 2449562 1994-07-28 -4 SVO
16 10.1 2449839 1995-05-01 2449850 1995-05-12 -11 SVO
17 10.6 2450131 1996-02-17 2450139 1996-02-25 -8 SVO
18 10.3 2450417 1996-11-29 2450427 1996-12-09 -10 SVO
19 10.6 2450709 1997-09-17 2450715 1997-09-23 -6 SVO
20 10.2 2450995 1998-06-30 2451004 1998-07-09 -9 SVO
21 10.3 2451283 1999-04-14 2451292 1999-04-23 -9 SVO
22 10.6 2451564 2000-01-20 2451580 2000-02-05 -16 SVO
23 10.2 2451842 2000-10-24 2451869 2000-11-20 -27 SVO
24 10.5 2452136 2001-08-14 2452157 2001-09-04 -21 SVO
25 10.3 2452421 2002-05-26 2452445 2002-06-19 -24 SVO
26 10.4 2452708 2003-03-09 2452733 2003-04-03 -25 SVO
27   2453011 2004-01-06 2453022 2004-01-17 -11 AAVSO
28 10.5 2453291 2004-10-12 2453310 2004-10-31 -19 SVO
29 9.9 2453581 2005-07-29 2453598 2005-08-15 -17 SVO
30 10.7 2453877 2006-05-21 2453887 2006-05-31 -10 SVO
31 10.1 2454167 2007-03-07 2454175 2007-03-15 -8 SVO
32 10.4 2454451 2007-12-16 2454463 2007-12-28 -12 SVO
33 10.1 2454736 2008-09-26 2454752 2008-10-12 -16 SVO
34 9.9 2455026 2009-07-13 2455040 2009-07-27 -14 SVO
35 10.4 2455315 2010-04-28 2455328 2010-05-11 -13 SVO
36 10.1 2455605 2011-02-12 2455617 2011-02-24 -12 SVO
37 10.1 2455892 2011-11-26 2455905 2011-12-09 -13 SVO
38 10.4 2456186 2012-09-15 2456193 2012-09-22 -7 SVO
39 9.7 2456473 2013-06-29 2456481 2013-07-07 -8 SVO
40 10.2 2456760 2014-04-12 2456770 2014-04-22 -10 SVO
41 10.1 2457051 2015-01-28 2457058 2015-02-04 -7 SVO
42 10.4 2457344 2015-11-17 2457346 2015-11-19 -2 SVO
43 10.0 2457632 2016-08-31 2457635 2016-09-03 -3 SVO
44 10.6 2457931 2017-06-26 2457923 2017-06-18 8 SVO
45 9.8 2458220 2018-04-11 2458211 2018-04-02 9 SVO
46 10.8 2458521 2019-02-06 2458500 2019-01-16 21 SVO
47 10.1 2458809 2019-11-21 2458788 2019-10-31 21 SVO
48 10.1 2459104 2020-09-11 2459076 2020-08-14 28 SVO
49 10.1 2459396 2021-06-30 2459365 2021-05-30 31 SVO
50 9.8 2459683 2022-04-13 2459653 2022-03-14 30 SVO
51 10.1 2459987 2023-02-11 2459941 2022-12-27 46 SVO
52 10.2 2460294 2023-12-15 2460230 2023-10-12 64 SVO
53 10.0 2460584 2024-09-30 2460518 2024-07-26 66 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.