Maxima for Z Sgr
Period: 452.09, Epoch: 2439303.9
AAVSO offset: -1

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-63   2410854 1888-08-04 2410822 1888-07-03 32 AnHar, 1909, vol 55, p 95
-59   2412683 1893-08-07 2412631 1893-06-16 52 AnHar, 1909, vol 55, p 95
-58   2413120 1894-10-18 2413083 1894-09-11 37 AnHar, 1909, vol 55, p 95
-56   2414040 1897-04-25 2413987 1897-03-03 53 SVO
-55   2414492 1898-07-21 2414439 1898-05-29 53 AnHar, 1909, vol 55, p 95
-54   2414929 1899-10-01 2414891 1899-08-24 38 AnHar, 1909, vol 55, p 95
-52   2415830 1902-03-21 2415795 1902-02-14 35 SVO
-51   2416280 1903-06-14 2416247 1903-05-12 33 AnHar, 1952, vol 115
-50   2416739 1904-09-15 2416699 1904-08-06 40 AnHar, 1909, vol 55, p 95
-47   2418080 1908-05-18 2418056 1908-04-24 24 SVO
-46   2418515 1909-07-27 2418508 1909-07-20 7 AnHar, 1952, vol 115
-45   2418960 1910-10-15 2418960 1910-10-15 0 SVO
-42   2420315 1914-07-01 2420316 1914-07-02 -1 SVO
-41   2420760 1915-09-19 2420768 1915-09-27 -8 SVO
-38   2422115 1919-06-05 2422125 1919-06-15 -10 SVO
-37 9.4 2422569 1920-09-01 2422577 1920-09-09 -8 SVO
-36   2423046 1921-12-22 2423029 1921-12-05 17 AAVSO
-35   2423498 1923-03-19 2423481 1923-03-02 17 AAVSO
-30   2425710 1929-04-08 2425741 1929-05-09 -31 AnHar, 1952, vol 115
-29   2426150 1930-06-22 2426193 1930-08-04 -43 AAVSO
-28 9.3 2426616 1931-10-01 2426645 1931-10-30 -29 SVO
-27 9.1 2427063 1932-12-21 2427098 1933-01-25 -35 SVO
-26   2427510 1934-03-13 2427550 1934-04-22 -40 AAVSO
-25 8.6 2427979 1935-06-25 2428002 1935-07-18 -23 AAVSO
-24   2428441 1936-09-29 2428454 1936-10-12 -13 AAVSO
-23   2428897 1937-12-29 2428906 1938-01-07 -9 AAVSO
-22   2429369 1939-04-15 2429358 1939-04-04 11 AAVSO
-21 8.8 2429821 1940-07-10 2429810 1940-06-29 11 AAVSO
-20 8.5 2430267 1941-09-29 2430262 1941-09-24 5 SVO
-19   2430681 1942-11-17 2430714 1942-12-20 -33 AAVSO
-18   2431180 1944-03-30 2431166 1944-03-16 14 SVO
-17   2431630 1945-06-23 2431618 1945-06-11 12 SVO
-14 10.2 2432963 1949-02-15 2432975 1949-02-27 -12 AAVSO
-13 8.8 2433421 1950-05-19 2433427 1950-05-25 -6 SVO
-12 10.5 2433878 1951-08-19 2433879 1951-08-20 -1 SVO
-11 10.8 2434327 1952-11-10 2434331 1952-11-14 -4 AAVSO
-10 8.7 2434759 1954-01-16 2434783 1954-02-09 -24 SVO
-9 10.3 2435216 1955-04-18 2435235 1955-05-07 -19 SVO
-8 9.5 2435657 1956-07-02 2435687 1956-08-01 -30 SVO
-7 9.8 2436099 1957-09-17 2436139 1957-10-27 -40 SVO
-6 8.7 2436552 1958-12-14 2436591 1959-01-22 -39 SVO
-5 9.9 2437002 1960-03-08 2437043 1960-04-18 -41 SVO
-4 9.0 2437441 1961-05-21 2437496 1961-07-15 -55 SVO
-3 9.2 2437898 1962-08-21 2437948 1962-10-10 -50 SVO
-2 9.4 2438350 1963-11-16 2438400 1964-01-05 -50 SVO
-1 9.0 2438799 1965-02-07 2438852 1965-04-01 -53 AAVSO
0 9.4 2439257 1966-05-11 2439304 1966-06-27 -47 SVO
1 9.5 2439714 1967-08-11 2439756 1967-09-22 -42 SVO
2 10.0 2440156 1968-10-26 2440208 1968-12-17 -52 AAVSO
3   2440607 1970-01-20 2440660 1970-03-14 -53 AAVSO
4 8.7 2441076 1971-05-04 2441112 1971-06-09 -36 AAVSO
5 9.8 2441532 1972-08-02 2441564 1972-09-03 -32 SVO
6 9.2 2441968 1973-10-12 2442016 1973-11-29 -48 AAVSO
7   2442428 1975-01-15 2442469 1975-02-25 -41 AAVSO
8 9.2 2442892 1976-04-23 2442921 1976-05-22 -29 AAVSO
9 9.5 2443331 1977-07-06 2443373 1977-08-17 -42 SVO
10 9.2 2443782 1978-09-30 2443825 1978-11-12 -43 SVO
11   2444237 1979-12-29 2444277 1980-02-07 -40 AAVSO
12 9.4 2444709 1981-04-14 2444729 1981-05-04 -20 AAVSO
13 9.2 2445176 1982-07-25 2445181 1982-07-30 -5 SVO
14 9.8 2445625 1983-10-17 2445633 1983-10-25 -8 SVO
15 11.0 2446084 1985-01-18 2446085 1985-01-19 -1 AAVSO
16 10.3 2446559 1986-05-08 2446537 1986-04-16 22 SVO
17 9.0 2447011 1987-08-03 2446989 1987-07-12 22 SVO
18   2447471 1988-11-05 2447442 1988-10-07 29 AAVSO
19 8.5 2447897 1990-01-05 2447894 1990-01-02 3 SVO
20 8.9 2448394 1991-05-17 2448346 1991-03-30 48 SVO
21 9.7 2448845 1992-08-10 2448798 1992-06-24 47 SVO
22 8.8 2449299 1993-11-07 2449250 1993-09-19 49 SVO
23   2449749 1995-01-31 2449702 1994-12-15 47 AAVSO
24 9.5 2450218 1996-05-14 2450154 1996-03-11 64 SVO
25 8.9 2450668 1997-08-07 2450606 1997-06-06 62 SVO
26   2451116 1998-10-29 2451058 1998-09-01 58 AAVSO
27 9.4 2451566 2000-01-22 2451510 1999-11-27 56 SVO
28   2452044 2001-05-14 2451962 2001-02-21 82 AAVSO
29 8.7 2452467 2002-07-11 2452414 2002-05-19 53 SVO
30 11.2 2452911 2003-09-28 2452867 2003-08-15 44 SVO
31 10.2 2453366 2004-12-26 2453319 2004-11-09 47 SVO
32   2453817 2006-03-22 2453771 2006-02-04 46 AAVSO
33 8.5 2454260 2007-06-08 2454223 2007-05-02 37 SVO
34 10.3 2454700 2008-08-21 2454675 2008-07-27 25 SVO
35 9.3 2455143 2009-11-07 2455127 2009-10-22 16 SVO
36   2455593 2011-01-31 2455579 2011-01-17 14 AAVSO
37 8.8 2456035 2012-04-17 2456031 2012-04-13 4 SVO
38 10.4 2456490 2013-07-16 2456483 2013-07-09 7 SVO
39 9.5 2456935 2014-10-04 2456935 2014-10-04 0 SVO
40 9.4 2457379 2015-12-22 2457387 2015-12-30 -8 SVO
41 9.2 2457826 2017-03-13 2457840 2017-03-27 -14 SVO
42 8.8 2458280 2018-06-10 2458292 2018-06-22 -12 SVO
43 10.1 2458720 2019-08-24 2458744 2019-09-17 -24 SVO
44 9.1 2459177 2020-11-23 2459196 2020-12-12 -19 SVO
45 10.2 2459631 2022-02-20 2459648 2022-03-09 -17 SVO
46 8.8 2460077 2023-05-12 2460100 2023-06-04 -23 SVO
47 10.2 2460541 2024-08-18 2460552 2024-08-29 -11 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.