Maxima for U Lyr
Period: 451.72, Epoch: 2442492
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-65   2412929 1894-04-10 2413130 1894-10-28 -201 AnHar, 1937, vol 105, p 459
-63   2413855 1896-10-22 2414034 1897-04-19 -179 GuL, 1920, 1.2
-56 9.5 2417007 1905-06-10 2417196 1905-12-16 -189 AAVSO
-55 9.6 2417457 1906-09-03 2417647 1907-03-12 -190 AAVSO
-54 9.6 2417916 1907-12-06 2418099 1908-06-06 -183 AAVSO
-53 10.0 2418354 1909-02-16 2418551 1909-09-01 -197 AAVSO
-52 9.5 2418836 1910-06-13 2419003 1910-11-27 -167 AAVSO
-51 10.2 2419281 1911-09-01 2419454 1912-02-21 -173 AAVSO
-50 9.9 2419733 1912-11-26 2419906 1913-05-18 -173 AAVSO
-49 9.0 2420153 1914-01-20 2420358 1914-08-13 -205 AAVSO
-48   2420611 1915-04-23 2420809 1915-11-07 -198 AAVSO
-47 9.8 2421095 1916-08-19 2421261 1917-02-01 -166 SVO
-46 9.0 2421554 1917-11-21 2421713 1918-04-29 -159 AAVSO
-45 9.8 2422017 1919-02-27 2422165 1919-07-25 -148 AAVSO
-44 10.0 2422498 1920-06-22 2422616 1920-10-18 -118 AAVSO
-43 9.7 2422934 1921-09-01 2423068 1922-01-13 -134 SVO
-42 9.0 2423400 1922-12-11 2423520 1923-04-10 -120 AAVSO
-41 9.1 2423878 1924-04-02 2423971 1924-07-04 -93 SVO
-40 8.8 2424334 1925-07-02 2424423 1925-09-29 -89 AAVSO
-39 8.9 2424794 1926-10-05 2424875 1926-12-25 -81 AAVSO
-38 8.3 2425242 1927-12-27 2425327 1928-03-21 -85 AAVSO
-37 9.6 2425709 1929-04-07 2425778 1929-06-15 -69 AAVSO
-36 9.7 2426184 1930-07-26 2426230 1930-09-10 -46 SVO
-35 9.1 2426622 1931-10-07 2426682 1931-12-06 -60 SVO
-34 9.5 2427072 1932-12-30 2427134 1933-03-02 -62 SVO
-33 10.4 2427528 1934-03-31 2427585 1934-05-27 -57 SVO
-32 10.6 2427988 1935-07-04 2428037 1935-08-22 -49 SVO
-31 11.3 2428454 1936-10-12 2428489 1936-11-16 -35 SVO
-30 10.8 2428930 1938-01-31 2428940 1938-02-10 -10 SVO
-29 10.2 2429386 1939-05-02 2429392 1939-05-08 -6 SVO
-28 9.8 2429827 1940-07-16 2429844 1940-08-02 -17 SVO
-27 10.1 2430269 1941-10-01 2430296 1941-10-28 -27 SVO
-26   2430714 1942-12-20 2430747 1943-01-22 -33 AAVSO
-25 10.0 2431235 1944-05-24 2431199 1944-04-18 36 SVO
-24 9.4 2431652 1945-07-15 2431651 1945-07-14 1 SVO
-23 9.3 2432085 1946-09-21 2432102 1946-10-08 -17 SVO
-22 9.3 2432544 1947-12-24 2432554 1948-01-03 -10 SVO
-21 9.4 2433014 1949-04-07 2433006 1949-03-30 8 SVO
-20 9.8 2433479 1950-07-16 2433458 1950-06-25 21 SVO
-19 9.9 2433932 1951-10-12 2433909 1951-09-19 23 SVO
-18 9.6 2434351 1952-12-04 2434361 1952-12-14 -10 SVO
-17 10.2 2434828 1954-03-26 2434813 1954-03-11 15 AAVSO
-16 9.8 2435292 1955-07-03 2435264 1955-06-05 28 SVO
-15 9.6 2435722 1956-09-05 2435716 1956-08-30 6 SVO
-14 9.4 2436146 1957-11-03 2436168 1957-11-25 -22 SVO
-13 9.6 2436628 1959-02-28 2436620 1959-02-20 8 AAVSO
-12 9.5 2437099 1960-06-13 2437071 1960-05-16 28 SVO
-11 9.4 2437505 1961-07-24 2437523 1961-08-11 -18 SVO
-10 9.4 2437955 1962-10-17 2437975 1962-11-06 -20 SVO
-9 9.5 2438417 1964-01-22 2438427 1964-02-01 -10 SVO
-8 9.9 2438891 1965-05-10 2438878 1965-04-27 13 SVO
-7 9.5 2439333 1966-07-26 2439330 1966-07-23 3 SVO
-6 9.8 2439792 1967-10-28 2439782 1967-10-18 10 SVO
-5 9.4 2440256 1969-02-03 2440233 1969-01-11 23 AAVSO
-4 9.5 2440703 1970-04-26 2440685 1970-04-08 18 SVO
-3 9.4 2441152 1971-07-19 2441137 1971-07-04 15 SVO
-2 9.5 2441607 1972-10-16 2441589 1972-09-28 18 SVO
-1 9.3 2442064 1974-01-16 2442040 1973-12-23 24 AAVSO
0 9.6 2442518 1975-04-15 2442492 1975-03-20 26 SVO
1 9.8 2442990 1976-07-30 2442944 1976-06-14 46 SVO
2 9.5 2443424 1977-10-07 2443395 1977-09-08 29 SVO
3 9.8 2443881 1979-01-07 2443847 1978-12-04 34 SVO
4 9.8 2444375 1980-05-15 2444299 1980-02-29 76 SVO
5 9.2 2444824 1981-08-07 2444751 1981-05-26 73 SVO
6 9.6 2445267 1982-10-24 2445202 1982-08-20 65 SVO
7 10.4 2445753 1984-02-22 2445654 1983-11-15 99 SVO
8 10.2 2446217 1985-05-31 2446106 1985-02-09 111 SVO
9 10.7 2446664 1986-08-21 2446557 1986-05-06 107 SVO
10 10.1 2447122 1987-11-22 2447009 1987-08-01 113 SVO
11 10.6 2447569 1989-02-11 2447461 1988-10-26 108 SVO
12 10.2 2448060 1990-06-17 2447913 1990-01-21 147 SVO
13 9.1 2448460 1991-07-22 2448364 1991-04-17 96 SVO
14 10.5 2448902 1992-10-06 2448816 1992-07-12 86 SVO
15 10.9 2449375 1994-01-22 2449268 1993-10-07 107 SVO
16 10.7 2449838 1995-04-30 2449720 1995-01-02 118 SVO
17 10.2 2450288 1996-07-23 2450171 1996-03-28 117 SVO
18 9.7 2450719 1997-09-27 2450623 1997-06-23 96 SVO
19 9.9 2451176 1998-12-28 2451075 1998-09-18 101 SVO
20 9.8 2451626 2000-03-22 2451526 1999-12-13 100 SVO
21 10.1 2452069 2001-06-08 2451978 2001-03-09 91 SVO
22 10.0 2452531 2002-09-13 2452430 2002-06-04 101 SVO
23 9.9 2452948 2003-11-04 2452882 2003-08-30 66 SVO
24 10.1 2453425 2005-02-23 2453333 2004-11-23 92 SVO
25 9.8 2453906 2006-06-19 2453785 2006-02-18 121 SVO
26 10.5 2454354 2007-09-10 2454237 2007-05-16 117 SVO
27 10.1 2454830 2008-12-29 2454688 2008-08-09 142 SVO
28 9.2 2455238 2010-02-10 2455140 2009-11-04 98 SVO
29 10.1 2455704 2011-05-22 2455592 2011-01-30 112 SVO
30 9.8 2456165 2012-08-25 2456044 2012-04-26 121 SVO
31 9.3 2456598 2013-11-01 2456495 2013-07-21 103 SVO
32 9.8 2457045 2015-01-22 2456947 2014-10-16 98 AAVSO
33 9.4 2457497 2016-04-18 2457399 2016-01-11 98 SVO
34 9.8 2457958 2017-07-23 2457850 2017-04-06 108 SVO
35 9.2 2458413 2018-10-21 2458302 2018-07-02 111 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.