Maxima for Z Oph
Period: 348.7, Epoch: 2442238
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-87   2411897 1891-06-13 2411901 1891-06-17 -4 AnHar, 1909, vol 55, p 95
-85   2412601 1893-05-17 2412599 1893-05-15 2 AnHar, 1909, vol 55, p 95
-84   2412949 1894-04-30 2412947 1894-04-28 2 AnHar, 1909, vol 55, p 95
-83   2413285 1895-04-01 2413296 1895-04-12 -11 AnHar, 1909, vol 55, p 95
-82   2413630 1896-03-11 2413645 1896-03-26 -15 SVO
-81   2414000 1897-03-16 2413993 1897-03-09 7 AnHar, 1909, vol 55, p 95
-80   2414310 1898-01-20 2414342 1898-02-21 -32 AnHar, 1952, vol 115
-77   2415380 1900-12-26 2415388 1901-01-03 -8 AnHar, 1909, vol 55, p 95
-76   2415722 1901-12-03 2415737 1901-12-18 -15 AnHar, 1909, vol 55, p 95
-75   2416086 1902-12-02 2416086 1902-12-02 0 AnHar, 1909, vol 55, p 95
-74   2416448 1903-11-29 2416434 1903-11-15 14 GuL, 1920, 1.2
-73   2416771 1904-10-17 2416783 1904-10-29 -12 SVO
-72 8.5 2417128 1905-10-09 2417132 1905-10-13 -4 AAVSO
-71 8.4 2417477 1906-09-23 2417480 1906-09-26 -3 AAVSO
-70 7.6 2417826 1907-09-07 2417829 1907-09-10 -3 AAVSO
-69 7.8 2418179 1908-08-25 2418178 1908-08-24 1 AAVSO
-68 8.0 2418521 1909-08-02 2418526 1909-08-07 -5 AAVSO
-67 7.8 2418873 1910-07-20 2418875 1910-07-22 -2 AAVSO
-66   2419234 1911-07-16 2419224 1911-07-06 10 SVO
-65 7.8 2419566 1912-06-12 2419573 1912-06-19 -7 AAVSO
-64 7.6 2419919 1913-05-31 2419921 1913-06-02 -2 AAVSO
-63 8.1 2420269 1914-05-16 2420270 1914-05-17 -1 AAVSO
-62 7.6 2420617 1915-04-29 2420619 1915-05-01 -2 AAVSO
-61 8.5 2420963 1916-04-09 2420967 1916-04-13 -4 AAVSO
-60 7.6 2421309 1917-03-21 2421316 1917-03-28 -7 AAVSO
-59 8.3 2421669 1918-03-16 2421665 1918-03-12 4 AAVSO
-58 8.0 2422019 1919-03-01 2422013 1919-02-23 6 AAVSO
-57 8.2 2422358 1920-02-03 2422362 1920-02-07 -4 AAVSO
-56 8.2 2422717 1921-01-27 2422711 1921-01-21 6 SVO
-55 8.3 2423080 1922-01-25 2423060 1922-01-05 20 SVO
-54 8.1 2423432 1923-01-12 2423408 1922-12-19 24 SVO
-53 8.0 2423770 1923-12-16 2423757 1923-12-03 13 SVO
-52 8.5 2424146 1924-12-26 2424106 1924-11-16 40 SVO
-51 8.0 2424475 1925-11-20 2424454 1925-10-30 21 SVO
-50 9.0 2424847 1926-11-27 2424803 1926-10-14 44 SVO
-49 8.1 2425174 1927-10-20 2425152 1927-09-28 22 SVO
-48 8.9 2425541 1928-10-21 2425500 1928-09-10 41 SVO
-47 7.9 2425861 1929-09-06 2425849 1929-08-25 12 SVO
-46 9.6 2426269 1930-10-19 2426198 1930-08-09 71 SVO
-45 8.6 2426577 1931-08-23 2426547 1931-07-24 30 SVO
-44 8.0 2426921 1932-08-01 2426895 1932-07-06 26 SVO
-43 8.2 2427267 1933-07-13 2427244 1933-06-20 23 SVO
-42 8.1 2427609 1934-06-20 2427593 1934-06-04 16 SVO
-41 8.4 2427963 1935-06-09 2427941 1935-05-18 22 SVO
-40 8.2 2428314 1936-05-25 2428290 1936-05-01 24 SVO
-39 8.2 2428654 1937-04-30 2428639 1937-04-15 15 AAVSO
-38 8.6 2429015 1938-04-26 2428987 1938-03-29 28 SVO
-37 8.2 2429346 1939-03-23 2429336 1939-03-13 10 AAVSO
-36 8.6 2429699 1940-03-10 2429685 1940-02-25 14 AAVSO
-35 8.0 2430036 1941-02-10 2430034 1941-02-08 2 AAVSO
-34   2430386 1942-01-26 2430382 1942-01-22 4 AAVSO
-33   2430737 1943-01-12 2430731 1943-01-06 6 AAVSO
-32 8.2 2431073 1943-12-14 2431080 1943-12-21 -7 AAVSO
-31 8.8 2431431 1944-12-06 2431428 1944-12-03 3 SVO
-30 8.2 2431782 1945-11-22 2431777 1945-11-17 5 SVO
-29 8.4 2432116 1946-10-22 2432126 1946-11-01 -10 SVO
-28 8.4 2432474 1947-10-15 2432474 1947-10-15 0 SVO
-27 8.1 2432820 1948-09-25 2432823 1948-09-28 -3 SVO
-26 8.4 2433175 1949-09-15 2433172 1949-09-12 3 SVO
-25 7.8 2433514 1950-08-20 2433521 1950-08-27 -7 SVO
-24 8.1 2433856 1951-07-28 2433869 1951-08-10 -13 SVO
-23 8.2 2434202 1952-07-08 2434218 1952-07-24 -16 SVO
-22 8.1 2434547 1953-06-18 2434567 1953-07-08 -20 SVO
-21 8.3 2434907 1954-06-13 2434915 1954-06-21 -8 SVO
-20 8.1 2435263 1955-06-04 2435264 1955-06-05 -1 AAVSO
-19 8.4 2435642 1956-06-17 2435613 1956-05-19 29 SVO
-18 7.9 2435969 1957-05-10 2435961 1957-05-02 8 SVO
-17 8.2 2436334 1958-05-10 2436310 1958-04-16 24 SVO
-16 8.2 2436683 1959-04-24 2436659 1959-03-31 24 AAVSO
-15 8.5 2437036 1960-04-11 2437008 1960-03-14 28 AAVSO
-14 8.6 2437382 1961-03-23 2437356 1961-02-25 26 AAVSO
-13 8.4 2437728 1962-03-04 2437705 1962-02-09 23 AAVSO
-12 8.7 2438074 1963-02-13 2438054 1963-01-24 20 AAVSO
-11 8.4 2438404 1964-01-09 2438402 1964-01-07 2 AAVSO
-10 8.0 2438743 1964-12-13 2438751 1964-12-21 -8 AAVSO
-9 8.4 2439084 1965-11-19 2439100 1965-12-05 -16 SVO
-8 8.5 2439438 1966-11-08 2439448 1966-11-18 -10 SVO
-7 8.5 2439786 1967-10-22 2439797 1967-11-02 -11 SVO
-6 8.7 2440147 1968-10-17 2440146 1968-10-16 1 SVO
-5 8.2 2440478 1969-09-13 2440495 1969-09-30 -17 SVO
-4 9.3 2440843 1970-09-13 2440843 1970-09-13 0 SVO
-3 8.3 2441175 1971-08-11 2441192 1971-08-28 -17 SVO
-2 9.3 2441538 1972-08-08 2441541 1972-08-11 -3 SVO
-1 8.4 2441880 1973-07-16 2441889 1973-07-25 -9 SVO
0 7.8 2442198 1974-05-30 2442238 1974-07-09 -40 SVO
1 8.7 2442584 1975-06-20 2442587 1975-06-23 -3 SVO
2 8.1 2442909 1976-05-10 2442935 1976-06-05 -26 SVO
3 8.6 2443289 1977-05-25 2443284 1977-05-20 5 SVO
4 8.1 2443637 1978-05-08 2443633 1978-05-04 4 SVO
5 8.3 2443991 1979-04-27 2443982 1979-04-18 9 SVO
6 8.2 2444337 1980-04-07 2444330 1980-03-31 7 SVO
7 8.9 2444711 1981-04-16 2444679 1981-03-15 32 SVO
8 8.0 2445050 1982-03-21 2445028 1982-02-27 22 SVO
9 8.5 2445414 1983-03-20 2445376 1983-02-10 38 AAVSO
10 8.6 2445774 1984-03-14 2445725 1984-01-25 49 AAVSO
11 8.1 2446101 1985-02-04 2446074 1985-01-08 27 SVO
12 8.4 2446463 1986-02-01 2446422 1985-12-22 41 SVO
13 8.2 2446812 1987-01-16 2446771 1986-12-06 41 SVO
14 8.4 2447150 1987-12-20 2447120 1987-11-20 30 SVO
15 9.1 2447514 1988-12-18 2447469 1988-11-03 45 SVO
16 8.7 2447870 1989-12-09 2447817 1989-10-17 53 SVO
17 8.5 2448223 1990-11-27 2448166 1990-10-01 57 SVO
18 8.1 2448560 1991-10-30 2448515 1991-09-15 45 SVO
19 8.4 2448904 1992-10-08 2448863 1992-08-28 41 SVO
20 8.0 2449253 1993-09-22 2449212 1993-08-12 41 SVO
21 8.3 2449612 1994-09-16 2449561 1994-07-27 51 SVO
22 8.2 2449955 1995-08-25 2449909 1995-07-10 46 SVO
23 8.4 2450311 1996-08-15 2450258 1996-06-23 53 SVO
24 8.4 2450653 1997-07-23 2450607 1997-06-07 46 SVO
25 8.0 2450991 1998-06-26 2450956 1998-05-22 35 SVO
26 8.6 2451375 1999-07-15 2451304 1999-05-05 71 SVO
27 7.9 2451693 2000-05-28 2451653 2000-04-18 40 SVO
28 8.2 2452043 2001-05-13 2452002 2001-04-02 41 SVO
29 8.2 2452396 2002-05-01 2452350 2002-03-16 46 SVO
30 8.3 2452744 2003-04-14 2452699 2003-02-28 45 SVO
31 8.4 2453092 2004-03-27 2453048 2004-02-12 44 SVO
32   2453439 2005-03-09 2453396 2005-01-25 43 AAVSO
33 8.3 2453785 2006-02-18 2453745 2006-01-09 40 SVO
34 8.4 2454137 2007-02-05 2454094 2006-12-24 43 SVO
35 8.1 2454488 2008-01-22 2454443 2007-12-08 45 SVO
36 8.0 2454816 2008-12-15 2454791 2008-11-20 25 SVO
37 8.5 2455188 2009-12-22 2455140 2009-11-04 48 SVO
38 8.3 2455543 2010-12-12 2455489 2010-10-19 54 SVO
39 8.0 2455886 2011-11-20 2455837 2011-10-02 49 SVO
40 8.2 2456244 2012-11-12 2456186 2012-09-15 58 SVO
41 8.1 2456590 2013-10-24 2456535 2013-08-30 55 SVO
42 8.8 2456955 2014-10-24 2456883 2014-08-13 72 SVO
43 8.1 2457311 2015-10-15 2457232 2015-07-28 79 SVO
44 8.1 2457657 2016-09-25 2457581 2016-07-11 76 SVO
45 8.2 2458008 2017-09-11 2457930 2017-06-25 78 SVO
46 8.5 2458364 2018-09-02 2458278 2018-06-08 86 SVO
47 8.7 2458722 2019-08-26 2458627 2019-05-23 95 SVO
48 8.0 2459050 2020-07-19 2458976 2020-05-06 74 SVO
49 8.7 2459417 2021-07-21 2459324 2021-04-19 93 SVO
50 7.9 2459740 2022-06-09 2459673 2022-04-03 67 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.