Maxima for Z Lyr
Period: 288.1, Epoch: 2455895
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-150   2412650 1893-07-05 2412680 1893-08-04 -30 SVO
-142   2414980 1899-11-21 2414985 1899-11-26 -5 AnHar, 1909, vol 55, p 95
-141   2415265 1900-09-02 2415273 1900-09-10 -8 AnHar, 1909, vol 55, p 95
-140   2415567 1901-07-01 2415561 1901-06-25 6 AnHar, 1909, vol 55, p 95
-139   2415847 1902-04-07 2415849 1902-04-09 -2 AnHar, 1909, vol 55, p 95
-137   2416429 1903-11-10 2416425 1903-11-06 4 AnHar, 1909, vol 55, p 95
-136   2416736 1904-09-12 2416713 1904-08-20 23 AAVSO
-135   2417016 1905-06-19 2417002 1905-06-05 14 AAVSO
-133 10.0 2417574 1906-12-29 2417578 1907-01-02 -4 AAVSO
-132 10.0 2417861 1907-10-12 2417866 1907-10-17 -5 AAVSO
-131 9.3 2418150 1908-07-27 2418154 1908-07-31 -4 AAVSO
-130 9.5 2418438 1909-05-11 2418442 1909-05-15 -4 AAVSO
-129   2418740 1910-03-09 2418730 1910-02-27 10 AAVSO
-128   2419015 1910-12-09 2419018 1910-12-12 -3 AAVSO
-127 10.2 2419295 1911-09-15 2419306 1911-09-26 -11 SVO
-126 10.6 2419588 1912-07-04 2419594 1912-07-10 -6 SVO
-125 10.3 2419857 1913-03-30 2419883 1913-04-25 -26 AAVSO
-124 9.6 2420145 1914-01-12 2420171 1914-02-07 -26 AAVSO
-122   2420722 1915-08-12 2420747 1915-09-06 -25 AAVSO
-121 10.0 2421013 1916-05-29 2421035 1916-06-20 -22 AAVSO
-120   2421287 1917-02-27 2421323 1917-04-04 -36 AAVSO
-119   2421573 1917-12-10 2421611 1918-01-17 -38 AAVSO
-118 11.0 2421862 1918-09-25 2421899 1918-11-01 -37 AAVSO
-117 9.5 2422139 1919-06-29 2422187 1919-08-16 -48 AAVSO
-116 9.8 2422429 1920-04-14 2422475 1920-05-30 -46 AAVSO
-115   2422736 1921-02-15 2422764 1921-03-15 -28 AAVSO
-114 10.6 2423012 1921-11-18 2423052 1921-12-28 -40 SVO
-113 10.4 2423303 1922-09-05 2423340 1922-10-12 -37 SVO
-112 10.1 2423596 1923-06-25 2423628 1923-07-27 -32 SVO
-111 10.6 2423890 1924-04-14 2423916 1924-05-10 -26 AAVSO
-110 9.9 2424194 1925-02-12 2424204 1925-02-22 -10 AAVSO
-109 10.2 2424473 1925-11-18 2424492 1925-12-07 -19 SVO
-108 10.1 2424763 1926-09-04 2424780 1926-09-21 -17 AAVSO
-107 9.8 2425053 1927-06-21 2425068 1927-07-06 -15 SVO
-106 10.3 2425339 1928-04-02 2425356 1928-04-19 -17 SVO
-105 10.2 2425636 1929-01-24 2425645 1929-02-02 -9 SVO
-104 10.3 2425923 1929-11-07 2425933 1929-11-17 -10 SVO
-103 9.9 2426214 1930-08-25 2426221 1930-09-01 -7 SVO
-102 10.3 2426511 1931-06-18 2426509 1931-06-16 2 SVO
-101 10.4 2426808 1932-04-10 2426797 1932-03-30 11 SVO
-100 10.2 2427102 1933-01-29 2427085 1933-01-12 17 SVO
-99 10.0 2427396 1933-11-19 2427373 1933-10-27 23 SVO
-98 10.6 2427690 1934-09-09 2427661 1934-08-11 29 SVO
-97 9.8 2427974 1935-06-20 2427949 1935-05-26 25 SVO
-96   2428263 1936-04-04 2428237 1936-03-09 26 AAVSO
-95   2428557 1937-01-23 2428526 1936-12-23 31 AAVSO
-94 10.0 2428844 1937-11-06 2428814 1937-10-07 30 SVO
-93 10.7 2429137 1938-08-26 2429102 1938-07-22 35 SVO
-92 10.2 2429432 1939-06-17 2429390 1939-05-06 42 SVO
-91   2429719 1940-03-30 2429678 1940-02-18 41 AAVSO
-90   2430003 1941-01-08 2429966 1940-12-02 37 AAVSO
-89 10.0 2430279 1941-10-11 2430254 1941-09-16 25 SVO
-88 10.2 2430569 1942-07-28 2430542 1942-07-01 27 SVO
-87 10.2 2430855 1943-05-10 2430830 1943-04-15 25 AAVSO
-86   2431127 1944-02-06 2431118 1944-01-28 9 AAVSO
-85 10.4 2431413 1944-11-18 2431407 1944-11-12 6 AAVSO
-84 10.0 2431702 1945-09-03 2431695 1945-08-27 7 SVO
-83 10.6 2431983 1946-06-11 2431983 1946-06-11 0 AAVSO
-82   2432269 1947-03-24 2432271 1947-03-26 -2 AAVSO
-81 10.4 2432553 1948-01-02 2432559 1948-01-08 -6 AAVSO
-80 10.3 2432839 1948-10-14 2432847 1948-10-22 -8 SVO
-79 10.2 2433124 1949-07-26 2433135 1949-08-06 -11 SVO
-78 10.4 2433413 1950-05-11 2433423 1950-05-21 -10 AAVSO
-77   2433693 1951-02-15 2433711 1951-03-05 -18 AAVSO
-76 10.2 2433972 1951-11-21 2433999 1951-12-18 -27 AAVSO
-75 10.7 2434262 1952-09-06 2434288 1952-10-02 -26 SVO
-74 10.2 2434545 1953-06-16 2434576 1953-07-17 -31 SVO
-73 11.0 2434825 1954-03-23 2434864 1954-05-01 -39 AAVSO
-72 10.2 2435114 1955-01-06 2435152 1955-02-13 -38 SVO
-71 10.2 2435393 1955-10-12 2435440 1955-11-28 -47 SVO
-70 10.0 2435675 1956-07-20 2435728 1956-09-11 -53 SVO
-69 10.2 2435960 1957-05-01 2436016 1957-06-26 -56 AAVSO
-68 10.2 2436249 1958-02-14 2436304 1958-04-10 -55 SVO
-67 10.4 2436518 1958-11-10 2436592 1959-01-23 -74 AAVSO
-66 10.0 2436809 1959-08-28 2436880 1959-11-07 -71 SVO
-65 10.4 2437100 1960-06-14 2437169 1960-08-22 -69 SVO
-64   2437384 1961-03-25 2437457 1961-06-06 -73 AAVSO
-63 10.0 2437671 1962-01-06 2437745 1962-03-21 -74 AAVSO
-62 10.1 2437965 1962-10-27 2438033 1963-01-03 -68 AAVSO
-61 10.5 2438262 1963-08-20 2438321 1963-10-18 -59 SVO
-60 9.9 2438553 1964-06-06 2438609 1964-08-01 -56 SVO
-59 10.6 2438839 1965-03-19 2438897 1965-05-16 -58 AAVSO
-58 10.5 2439127 1966-01-01 2439185 1966-02-28 -58 SVO
-57 10.3 2439424 1966-10-25 2439473 1966-12-13 -49 SVO
-56 10.1 2439714 1967-08-11 2439761 1967-09-27 -47 SVO
-55 9.9 2440008 1968-05-31 2440050 1968-07-12 -42 SVO
-54 10.4 2440299 1969-03-18 2440338 1969-04-26 -39 AAVSO
-53 10.6 2440597 1970-01-10 2440626 1970-02-08 -29 SVO
-52 10.2 2440895 1970-11-04 2440914 1970-11-23 -19 SVO
-51 9.7 2441178 1971-08-14 2441202 1971-09-07 -24 SVO
-50 10.5 2441475 1972-06-06 2441490 1972-06-21 -15 SVO
-49 9.3 2441753 1973-03-11 2441778 1973-04-05 -25 AAVSO
-48 10.0 2442053 1974-01-05 2442066 1974-01-18 -13 AAVSO
-47 9.9 2442352 1974-10-31 2442354 1974-11-02 -2 SVO
-46 10.6 2442644 1975-08-19 2442642 1975-08-17 2 SVO
-45 10.4 2442942 1976-06-12 2442931 1976-06-01 11 SVO
-44 9.8 2443222 1977-03-19 2443219 1977-03-16 3 AAVSO
-43 11.4 2443514 1978-01-05 2443507 1977-12-29 7 AAVSO
-42 10.5 2443814 1978-11-01 2443795 1978-10-13 19 AAVSO
-41 9.8 2444107 1979-08-21 2444083 1979-07-28 24 SVO
-40 10.1 2444392 1980-06-01 2444371 1980-05-11 21 SVO
-39 10.1 2444675 1981-03-11 2444659 1981-02-23 16 AAVSO
-38 10.2 2444977 1982-01-07 2444947 1981-12-08 30 SVO
-37 10.1 2445270 1982-10-27 2445235 1982-09-22 35 SVO
-36 10.1 2445563 1983-08-16 2445523 1983-07-07 40 SVO
-35 10.2 2445860 1984-06-08 2445812 1984-04-21 48 SVO
-34 10.0 2446149 1985-03-24 2446100 1985-02-03 49 AAVSO
-33 10.7 2446456 1986-01-25 2446388 1985-11-18 68 SVO
-32 10.5 2446729 1986-10-25 2446676 1986-09-02 53 SVO
-31 10.3 2447009 1987-08-01 2446964 1987-06-17 45 SVO
-30 10.1 2447294 1988-05-12 2447252 1988-03-31 42 SVO
-29 10.7 2447581 1989-02-23 2447540 1989-01-13 41 SVO
-28   2447860 1989-11-29 2447828 1989-10-28 32 AAVSO
-27 10.4 2448151 1990-09-16 2448116 1990-08-12 35 SVO
-26 10.5 2448430 1991-06-22 2448404 1991-05-27 26 SVO
-25   2448718 1992-04-05 2448693 1992-03-11 25 AAVSO
-24 10.4 2449003 1993-01-15 2448981 1992-12-24 22 SVO
-23 9.9 2449270 1993-10-09 2449269 1993-10-08 1 SVO
-22 10.5 2449558 1994-07-24 2449557 1994-07-23 1 SVO
-21 10.1 2449839 1995-05-01 2449845 1995-05-07 -6 SVO
-20 10.6 2450131 1996-02-17 2450133 1996-02-19 -2 SVO
-19 10.3 2450417 1996-11-29 2450421 1996-12-03 -4 SVO
-18 10.6 2450709 1997-09-17 2450709 1997-09-17 0 SVO
-17 10.2 2450995 1998-06-30 2450997 1998-07-02 -2 SVO
-16 10.3 2451283 1999-04-14 2451285 1999-04-16 -2 SVO
-15 10.6 2451564 2000-01-20 2451574 2000-01-30 -10 SVO
-14 10.2 2451842 2000-10-24 2451862 2000-11-13 -20 SVO
-13 10.5 2452136 2001-08-14 2452150 2001-08-28 -14 SVO
-12 10.3 2452421 2002-05-26 2452438 2002-06-12 -17 SVO
-11 10.4 2452708 2003-03-09 2452726 2003-03-27 -18 SVO
-10   2453011 2004-01-06 2453014 2004-01-09 -3 AAVSO
-9 10.5 2453291 2004-10-12 2453302 2004-10-23 -11 SVO
-8 9.9 2453581 2005-07-29 2453590 2005-08-07 -9 SVO
-7 10.7 2453877 2006-05-21 2453878 2006-05-22 -1 SVO
-6 10.1 2454167 2007-03-07 2454166 2007-03-06 1 SVO
-5 10.4 2454451 2007-12-16 2454455 2007-12-20 -4 SVO
-4 10.1 2454736 2008-09-26 2454743 2008-10-03 -7 SVO
-3 9.9 2455026 2009-07-13 2455031 2009-07-18 -5 SVO
-2 10.4 2455315 2010-04-28 2455319 2010-05-02 -4 SVO
-1 10.1 2455605 2011-02-12 2455607 2011-02-14 -2 SVO
0 10.1 2455892 2011-11-26 2455895 2011-11-29 -3 SVO
1 10.4 2456186 2012-09-15 2456183 2012-09-12 3 SVO
2 9.7 2456473 2013-06-29 2456471 2013-06-27 2 SVO
3 10.2 2456760 2014-04-12 2456759 2014-04-11 1 SVO
4 10.1 2457051 2015-01-28 2457047 2015-01-24 4 SVO
5 10.4 2457344 2015-11-17 2457336 2015-11-09 8 SVO
6 10.0 2457632 2016-08-31 2457624 2016-08-23 8 SVO
7 10.6 2457931 2017-06-26 2457912 2017-06-07 19 SVO
8 9.8 2458220 2018-04-11 2458200 2018-03-22 20 SVO
9 10.8 2458521 2019-02-06 2458488 2019-01-04 33 SVO
10 10.1 2458809 2019-11-21 2458776 2019-10-19 33 SVO
11 10.1 2459104 2020-09-11 2459064 2020-08-02 40 SVO
12 10.1 2459396 2021-06-30 2459352 2021-05-17 44 SVO
13 9.8 2459683 2022-04-13 2459640 2022-03-01 43 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.