Maxima for Z CrB
Period: 250.68, Epoch: 2442514
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-108   2415430 1901-02-14 2415441 1901-02-25 -11 SVO
-106   2415924 1902-06-23 2415942 1902-07-11 -18 SVO
-103   2416673 1904-07-11 2416694 1904-08-01 -21 SVO
-102   2416926 1905-03-21 2416945 1905-04-09 -19 SVO
-99   2417691 1907-04-25 2417697 1907-05-01 -6 AAVSO
-98   2417942 1908-01-01 2417947 1908-01-06 -5 AAVSO
-97   2418183 1908-08-29 2418198 1908-09-13 -15 AAVSO
-96   2418436 1909-05-09 2418449 1909-05-22 -13 GuL, 1920, 1.2
-94 9.8 2418915 1910-08-31 2418950 1910-10-05 -35 AAVSO
-93   2419182 1911-05-25 2419201 1911-06-13 -19 AAVSO
-92   2419438 1912-02-05 2419451 1912-02-18 -13 AAVSO
-91   2419685 1912-10-09 2419702 1912-10-26 -17 AAVSO
-90   2419925 1913-06-06 2419953 1913-07-04 -28 SVO
-87 9.2 2420655 1915-06-06 2420705 1915-07-26 -50 AAVSO
-86   2420907 1916-02-13 2420956 1916-04-02 -49 AAVSO
-85   2421179 1916-11-11 2421206 1916-12-08 -27 AAVSO
-84 11.1 2421436 1917-07-26 2421457 1917-08-16 -21 AAVSO
-83 10.4 2421697 1918-04-13 2421708 1918-04-24 -11 SVO
-82   2421927 1918-11-29 2421958 1918-12-30 -31 AAVSO
-81 9.5 2422179 1919-08-08 2422209 1919-09-07 -30 AAVSO
-80   2422448 1920-05-03 2422460 1920-05-15 -12 AAVSO
-79   2422691 1921-01-01 2422710 1921-01-20 -19 AAVSO
-78 9.7 2422934 1921-09-01 2422961 1921-09-28 -27 AAVSO
-77 10.6 2423187 1922-05-12 2423212 1922-06-06 -25 AAVSO
-76 9.2 2423442 1923-01-22 2423462 1923-02-11 -20 AAVSO
-75 11.4 2423687 1923-09-24 2423713 1923-10-20 -26 AAVSO
-74 11.0 2423947 1924-06-10 2423964 1924-06-27 -17 AAVSO
-73 10.4 2424191 1925-02-09 2424214 1925-03-04 -23 AAVSO
-72   2424440 1925-10-16 2424465 1925-11-10 -25 AAVSO
-71 10.5 2424699 1926-07-02 2424716 1926-07-19 -17 AAVSO
-70   2424961 1927-03-21 2424966 1927-03-26 -5 AAVSO
-68   2425443 1928-07-15 2425468 1928-08-09 -25 AAVSO
-67 10.8 2425714 1929-04-12 2425718 1929-04-16 -4 SVO
-66 11.0 2425948 1929-12-02 2425969 1929-12-23 -21 AAVSO
-65 9.5 2426207 1930-08-18 2426220 1930-08-31 -13 SVO
-64 9.9 2426461 1931-04-29 2426470 1931-05-08 -9 SVO
-63 9.8 2426695 1931-12-19 2426721 1932-01-14 -26 AAVSO
-62 9.7 2426965 1932-09-14 2426972 1932-09-21 -7 SVO
-61 10.1 2427210 1933-05-17 2427223 1933-05-30 -13 SVO
-60 9.4 2427451 1934-01-13 2427473 1934-02-04 -22 AAVSO
-59 10.7 2427704 1934-09-23 2427724 1934-10-13 -20 AAVSO
-58 10.1 2427965 1935-06-11 2427975 1935-06-21 -10 SVO
-56 9.5 2428452 1936-10-10 2428476 1936-11-03 -24 AAVSO
-55 9.7 2428708 1937-06-23 2428727 1937-07-12 -19 SVO
-54 8.8 2428947 1938-02-17 2428977 1938-03-19 -30 AAVSO
-53 10.6 2429201 1938-10-29 2429228 1938-11-25 -27 AAVSO
-52 10.1 2429448 1939-07-03 2429479 1939-08-03 -31 SVO
-51 9.9 2429702 1940-03-13 2429729 1940-04-09 -27 AAVSO
-50   2429951 1940-11-17 2429980 1940-12-16 -29 AAVSO
-49 10.6 2430207 1941-07-31 2430231 1941-08-24 -24 SVO
-48 9.8 2430442 1942-03-23 2430481 1942-05-01 -39 AAVSO
-46 9.2 2430958 1943-08-21 2430983 1943-09-15 -25 SVO
-45 11.0 2431207 1944-04-26 2431233 1944-05-22 -26 AAVSO
-44 10.8 2431447 1944-12-22 2431484 1945-01-28 -37 AAVSO
-43 9.7 2431704 1945-09-05 2431735 1945-10-06 -31 SVO
-42 9.7 2431960 1946-05-19 2431985 1946-06-13 -25 SVO
-40 9.5 2432456 1947-09-27 2432487 1947-10-28 -31 SVO
-39 9.7 2432709 1948-06-06 2432737 1948-07-04 -28 SVO
-38 9.5 2432953 1949-02-05 2432988 1949-03-12 -35 AAVSO
-37 9.8 2433207 1949-10-17 2433239 1949-11-18 -32 SVO
-36 9.3 2433462 1950-06-29 2433490 1950-07-27 -28 SVO
-35 9.5 2433711 1951-03-05 2433740 1951-04-03 -29 AAVSO
-34   2433961 1951-11-10 2433991 1951-12-10 -30 AAVSO
-33 9.4 2434225 1952-07-31 2434242 1952-08-17 -17 SVO
-32 9.7 2434482 1953-04-14 2434492 1953-04-24 -10 AAVSO
-31 9.5 2434736 1953-12-24 2434743 1953-12-31 -7 AAVSO
-30 10.5 2434981 1954-08-26 2434994 1954-09-08 -13 SVO
-29 10.4 2435241 1955-05-13 2435244 1955-05-16 -3 SVO
-28   2435493 1956-01-20 2435495 1956-01-22 -2 AAVSO
-27 10.0 2435727 1956-09-10 2435746 1956-09-29 -19 SVO
-26 9.5 2435980 1957-05-21 2435996 1957-06-06 -16 SVO
-25 9.8 2436232 1958-01-28 2436247 1958-02-12 -15 AAVSO
-24 10.0 2436481 1958-10-04 2436498 1958-10-21 -17 AAVSO
-23 9.8 2436730 1959-06-10 2436748 1959-06-28 -18 SVO
-22 9.4 2436981 1960-02-16 2436999 1960-03-05 -18 AAVSO
-21 9.8 2437230 1960-10-22 2437250 1960-11-11 -20 AAVSO
-20 9.1 2437473 1961-06-22 2437500 1961-07-19 -27 SVO
-19 10.4 2437732 1962-03-08 2437751 1962-03-27 -19 SVO
-18 10.8 2437981 1962-11-12 2438002 1962-12-03 -21 AAVSO
-17 9.7 2438227 1963-07-16 2438252 1963-08-10 -25 SVO
-16 9.9 2438480 1964-03-25 2438503 1964-04-17 -23 SVO
-15 10.7 2438737 1964-12-07 2438754 1964-12-24 -17 AAVSO
-14 10.1 2438988 1965-08-15 2439004 1965-08-31 -16 SVO
-13 9.5 2439240 1966-04-24 2439255 1966-05-09 -15 SVO
-12 10.7 2439492 1967-01-01 2439506 1967-01-15 -14 AAVSO
-11 9.6 2439735 1967-09-01 2439757 1967-09-23 -22 SVO
-10 9.6 2439984 1968-05-07 2440007 1968-05-30 -23 SVO
-9 10.2 2440240 1969-01-18 2440258 1969-02-05 -18 AAVSO
-8 10.2 2440486 1969-09-21 2440509 1969-10-14 -23 SVO
-7 10.0 2440737 1970-05-30 2440759 1970-06-21 -22 SVO
-6 9.5 2440981 1971-01-29 2441010 1971-02-27 -29 AAVSO
-5 10.2 2441233 1971-10-08 2441261 1971-11-05 -28 AAVSO
-4 9.8 2441485 1972-06-16 2441511 1972-07-12 -26 SVO
-3 10.0 2441732 1973-02-18 2441762 1973-03-20 -30 AAVSO
-2 9.8 2441988 1973-11-01 2442013 1973-11-26 -25 SVO
-1 9.7 2442236 1974-07-07 2442263 1974-08-03 -27 SVO
0 9.1 2442489 1975-03-17 2442514 1975-04-11 -25 SVO
1 9.6 2442740 1975-11-23 2442765 1975-12-18 -25 SVO
2 9.9 2442991 1976-07-31 2443015 1976-08-24 -24 SVO
3 9.5 2443246 1977-04-12 2443266 1977-05-02 -20 SVO
4 9.7 2443509 1977-12-31 2443517 1978-01-08 -8 SVO
5 10.0 2443751 1978-08-30 2443767 1978-09-15 -16 SVO
6 9.1 2444000 1979-05-06 2444018 1979-05-24 -18 SVO
7 9.7 2444253 1980-01-14 2444269 1980-01-30 -16 SVO
8 9.1 2444506 1980-09-23 2444519 1980-10-06 -13 SVO
9 10.3 2444762 1981-06-06 2444770 1981-06-14 -8 SVO
10 9.5 2445008 1982-02-07 2445021 1982-02-20 -13 SVO
11 10.1 2445254 1982-10-11 2445271 1982-10-28 -17 SVO
12 9.7 2445507 1983-06-21 2445522 1983-07-06 -15 SVO
13 9.7 2445758 1984-02-27 2445773 1984-03-13 -15 SVO
14 9.4 2446007 1984-11-02 2446024 1984-11-19 -17 SVO
15 9.4 2446260 1985-07-13 2446274 1985-07-27 -14 SVO
16 9.8 2446508 1986-03-18 2446525 1986-04-04 -17 SVO
17 9.1 2446754 1986-11-19 2446776 1986-12-11 -22 SVO
18 10.3 2447016 1987-08-08 2447026 1987-08-18 -10 SVO
19 10.0 2447264 1988-04-12 2447277 1988-04-25 -13 SVO
20 9.6 2447515 1988-12-19 2447528 1989-01-01 -13 SVO
21 10.2 2447768 1989-08-29 2447778 1989-09-08 -10 SVO
22 9.9 2448020 1990-05-08 2448029 1990-05-17 -9 SVO
23 9.4 2448270 1991-01-13 2448280 1991-01-23 -10 SVO
24 10.2 2448524 1991-09-24 2448530 1991-09-30 -6 SVO
25 9.5 2448777 1992-06-03 2448781 1992-06-07 -4 SVO
26   2449025 1993-02-06 2449032 1993-02-13 -7 AAVSO
27 10.3 2449274 1993-10-13 2449282 1993-10-21 -8 SVO
28 10.4 2449529 1994-06-25 2449533 1994-06-29 -4 SVO
29 9.3 2449781 1995-03-04 2449784 1995-03-07 -3 SVO
30 10.5 2450038 1995-11-16 2450034 1995-11-12 4 SVO
31 10.0 2450285 1996-07-20 2450285 1996-07-20 0 SVO
32 9.7 2450534 1997-03-26 2450536 1997-03-28 -2 SVO
33 9.7 2450786 1997-12-03 2450786 1997-12-03 0 SVO
34 9.6 2451036 1998-08-10 2451037 1998-08-11 -1 SVO
35 9.4 2451283 1999-04-14 2451288 1999-04-19 -5 SVO
36 10.2 2451537 1999-12-24 2451538 1999-12-25 -1 SVO
37 9.7 2451796 2000-09-08 2451789 2000-09-01 7 SVO
38 9.7 2452046 2001-05-16 2452040 2001-05-10 6 SVO
39 9.6 2452300 2002-01-25 2452291 2002-01-16 9 SVO
40 9.3 2452546 2002-09-28 2452541 2002-09-23 5 SVO
41 9.4 2452802 2003-06-11 2452792 2003-06-01 10 SVO
42 9.5 2453061 2004-02-25 2453043 2004-02-07 18 SVO
43 9.4 2453305 2004-10-26 2453293 2004-10-14 12 SVO
44 9.3 2453554 2005-07-02 2453544 2005-06-22 10 SVO
45 10.3 2453808 2006-03-13 2453795 2006-02-28 13 SVO
46 9.7 2454054 2006-11-14 2454045 2006-11-05 9 SVO
47 9.2 2454302 2007-07-20 2454296 2007-07-14 6 SVO
48 10.3 2454557 2008-03-31 2454547 2008-03-21 10 SVO
49 9.8 2454806 2008-12-05 2454797 2008-11-26 9 SVO
50 10.3 2455056 2009-08-12 2455048 2009-08-04 8 SVO
51 9.7 2455308 2010-04-21 2455299 2010-04-12 9 SVO
52 9.4 2455562 2010-12-31 2455549 2010-12-18 13 SVO
53 9.5 2455814 2011-09-09 2455800 2011-08-26 14 SVO
54 9.4 2456063 2012-05-15 2456051 2012-05-03 12 SVO
55 9.9 2456321 2013-01-28 2456301 2013-01-08 20 AAVSO
56 9.5 2456562 2013-09-26 2456552 2013-09-16 10 SVO
57 9.4 2456815 2014-06-06 2456803 2014-05-25 12 SVO
58 10.2 2457068 2015-02-14 2457053 2015-01-30 15 SVO
59 9.3 2457311 2015-10-15 2457304 2015-10-08 7 SVO
60 9.8 2457567 2016-06-27 2457555 2016-06-15 12 SVO
61 9.9 2457823 2017-03-10 2457805 2017-02-20 18 SVO
62 9.4 2458064 2017-11-06 2458056 2017-10-29 8 SVO
63 9.3 2458311 2018-07-11 2458307 2018-07-07 4 SVO
64 10.2 2458568 2019-03-25 2458558 2019-03-15 10 SVO
65 9.7 2458817 2019-11-29 2458808 2019-11-20 9 SVO
66 9.4 2459060 2020-07-29 2459059 2020-07-28 1 SVO
67 9.6 2459312 2021-04-07 2459310 2021-04-05 2 SVO
68 10.0 2459563 2021-12-14 2459560 2021-12-11 3 SVO
69 9.3 2459814 2022-08-22 2459811 2022-08-19 3 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.