Maxima for Z Sgr
Period: 452.11, Epoch: 2439304.3
AAVSO offset: -1

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-63   2410854 1888-08-04 2410821 1888-07-02 33 AnHar, 1909, vol 55, p 95
-59   2412683 1893-08-07 2412630 1893-06-15 53 AnHar, 1909, vol 55, p 95
-58   2413120 1894-10-18 2413082 1894-09-10 38 AnHar, 1909, vol 55, p 95
-56   2414040 1897-04-25 2413986 1897-03-02 54 SVO
-55   2414492 1898-07-21 2414438 1898-05-28 54 AnHar, 1909, vol 55, p 95
-54   2414929 1899-10-01 2414890 1899-08-23 39 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 2418055 1908-04-23 25 SVO
-46   2418515 1909-07-27 2418507 1909-07-19 8 AnHar, 1952, vol 115
-45   2418960 1910-10-15 2418959 1910-10-14 1 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 2422124 1919-06-14 -9 SVO
-37 9.4 2422569 1920-09-01 2422576 1920-09-08 -7 SVO
-36   2423046 1921-12-22 2423028 1921-12-04 18 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 2427097 1933-01-24 -34 SVO
-26   2427510 1934-03-13 2427549 1934-04-21 -39 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 2436140 1957-10-28 -41 SVO
-6 8.7 2436552 1958-12-14 2436592 1959-01-23 -40 SVO
-5 9.9 2437002 1960-03-08 2437044 1960-04-19 -42 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 2440209 1968-12-18 -53 AAVSO
3   2440607 1970-01-20 2440661 1970-03-15 -54 AAVSO
4 8.7 2441076 1971-05-04 2441113 1971-06-10 -37 AAVSO
5 9.8 2441532 1972-08-02 2441565 1972-09-04 -33 SVO
6 9.2 2441968 1973-10-12 2442017 1973-11-30 -49 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 2444278 1980-02-08 -41 AAVSO
12 9.4 2444709 1981-04-14 2444730 1981-05-05 -21 AAVSO
13 9.2 2445176 1982-07-25 2445182 1982-07-31 -6 SVO
14 9.8 2445625 1983-10-17 2445634 1983-10-26 -9 SVO
15 11.0 2446084 1985-01-18 2446086 1985-01-20 -2 AAVSO
16 10.3 2446559 1986-05-08 2446538 1986-04-17 21 SVO
17 9.0 2447011 1987-08-03 2446990 1987-07-13 21 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 2448347 1991-03-31 47 SVO
21 9.7 2448845 1992-08-10 2448799 1992-06-25 46 SVO
22 8.8 2449299 1993-11-07 2449251 1993-09-20 48 SVO
23   2449749 1995-01-31 2449703 1994-12-16 46 AAVSO
24 9.5 2450218 1996-05-14 2450155 1996-03-12 63 SVO
25 8.9 2450668 1997-08-07 2450607 1997-06-07 61 SVO
26   2451116 1998-10-29 2451059 1998-09-02 57 AAVSO
27 9.4 2451566 2000-01-22 2451511 1999-11-28 55 SVO
28   2452044 2001-05-14 2451963 2001-02-22 81 AAVSO
29 8.7 2452467 2002-07-11 2452416 2002-05-21 51 SVO
30 11.2 2452911 2003-09-28 2452868 2003-08-16 43 SVO
31 10.2 2453366 2004-12-26 2453320 2004-11-10 46 SVO
32   2453817 2006-03-22 2453772 2006-02-05 45 AAVSO
33 8.5 2454260 2007-06-08 2454224 2007-05-03 36 SVO
34 10.3 2454700 2008-08-21 2454676 2008-07-28 24 SVO
35 9.3 2455143 2009-11-07 2455128 2009-10-23 15 SVO
36   2455593 2011-01-31 2455580 2011-01-18 13 AAVSO
37 8.8 2456035 2012-04-17 2456032 2012-04-14 3 SVO
38 10.4 2456490 2013-07-16 2456485 2013-07-11 5 SVO
39 9.5 2456935 2014-10-04 2456937 2014-10-06 -2 SVO
40 9.4 2457379 2015-12-22 2457389 2016-01-01 -10 SVO
41 9.2 2457826 2017-03-13 2457841 2017-03-28 -15 SVO
42 8.8 2458280 2018-06-10 2458293 2018-06-23 -13 SVO
43 10.1 2458720 2019-08-24 2458745 2019-09-18 -25 SVO
44 9.1 2459177 2020-11-23 2459197 2020-12-13 -20 SVO
45 10.2 2459631 2022-02-20 2459649 2022-03-10 -18 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.