Maxima for ZZ Dra
Period: 269.68, Epoch: 2441185.9

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-97   2415005 1899-12-16 2415027 1900-01-07 -22 SVO
-95   2415555 1901-06-19 2415566 1901-06-30 -11 SVO
-93   2416083 1902-11-29 2416106 1902-12-22 -23 SVO
-92   2416349 1903-08-22 2416375 1903-09-17 -26 PZ, 1951, vol 8, p 21
-91   2416620 1904-05-19 2416645 1904-06-13 -25 SVO
-90   2416910 1905-03-05 2416915 1905-03-10 -5 SVO
-89   2417170 1905-11-20 2417184 1905-12-04 -14 SVO
-88   2417455 1906-09-01 2417454 1906-08-31 1 SVO
-85   2418279 1908-12-03 2418263 1908-11-17 16 SVO
-84   2418545 1909-08-26 2418533 1909-08-14 12 SVO
-83   2418830 1910-06-07 2418802 1910-05-10 28 SVO
-82   2419100 1911-03-04 2419072 1911-02-04 28 SVO
-81   2419370 1911-11-29 2419342 1911-11-01 28 SVO
-77   2420460 1914-11-23 2420420 1914-10-14 40 SVO
-75   2421000 1916-05-16 2420960 1916-04-06 40 SVO
-74   2421245 1917-01-16 2421229 1916-12-31 16 SVO
-73   2421540 1917-11-07 2421499 1917-09-27 41 SVO
-72   2421800 1918-07-25 2421769 1918-06-24 31 SVO
-71   2422080 1919-05-01 2422039 1919-03-21 41 SVO
-70   2422320 1919-12-27 2422308 1919-12-15 12 SVO
-69   2422600 1920-10-02 2422578 1920-09-10 22 SVO
-68   2422855 1921-06-14 2422848 1921-06-07 7 SVO
-66   2423380 1922-11-21 2423387 1922-11-28 -7 SVO
-65   2423650 1923-08-18 2423657 1923-08-25 -7 SVO
-64   2423900 1924-04-24 2423926 1924-05-20 -26 SVO
-62   2424430 1925-10-06 2424466 1925-11-11 -36 SVO
-61   2424680 1926-06-13 2424735 1926-08-07 -55 SVO
-60   2424970 1927-03-30 2425005 1927-05-04 -35 SVO
-59   2425220 1927-12-05 2425275 1928-01-29 -55 SVO
-58   2425490 1928-08-31 2425544 1928-10-24 -54 SVO
-57   2425765 1929-06-02 2425814 1929-07-21 -49 SVO
-55   2426285 1930-11-04 2426353 1931-01-11 -68 SVO
-54   2426547 1931-07-24 2426623 1931-10-08 -76 SVO
-53   2426830 1932-05-02 2426893 1932-07-04 -63 SVO
-52   2427100 1933-01-27 2427162 1933-03-30 -62 SVO
-51   2427380 1933-11-03 2427432 1933-12-25 -52 PZ, 1951, vol 8, p 21
-50   2427663 1934-08-13 2427702 1934-09-21 -39 SVO
-49   2427929 1935-05-06 2427972 1935-06-18 -43 PZ, 1951, vol 8, p 21
-48   2428196 1936-01-28 2428241 1936-03-13 -45 PZ, 1951, vol 8, p 21
-47   2428465 1936-10-23 2428511 1936-12-08 -46 PZ, 1951, vol 8, p 21
-46   2428742 1937-07-27 2428781 1937-09-04 -39 SVO
-45   2429014 1938-04-25 2429050 1938-05-31 -36 SVO
-44   2429296 1939-02-01 2429320 1939-02-25 -24 SVO
-43   2429559 1939-10-22 2429590 1939-11-22 -31 SVO
-42   2429847 1940-08-05 2429859 1940-08-17 -12 SVO
-41   2430117 1941-05-02 2430129 1941-05-14 -12 SVO
-40   2430387 1942-01-27 2430399 1942-02-08 -12 SVO
-39   2430658 1942-10-25 2430668 1942-11-04 -10 SVO
-38   2430928 1943-07-22 2430938 1943-08-01 -10 SVO
-37   2431200 1944-04-19 2431208 1944-04-27 -8 SVO
-35   2431746 1945-10-17 2431747 1945-10-18 -1 SVO
-34   2432026 1946-07-24 2432017 1946-07-15 9 SVO
-33   2432312 1947-05-06 2432286 1947-04-10 26 PZ, 1951, vol 8, p 21
-32   2432587 1948-02-05 2432556 1948-01-05 31 PZ, 1951, vol 8, p 21
-31   2432861 1948-11-05 2432826 1948-10-01 35 PCopO, 1955, vol 167, p 1
-30   2433143 1949-08-14 2433095 1949-06-27 48 SVO
-29   2433418 1950-05-16 2433365 1950-03-24 53 PCopO, 1955, vol 167, p 1
-28   2433687 1951-02-09 2433635 1950-12-19 52 PCopO, 1955, vol 167, p 1
-27   2433965 1951-11-14 2433905 1951-09-15 60 PCopO, 1955, vol 167, p 1
-26   2434240 1952-08-15 2434174 1952-06-10 66 SVO
-25   2434509 1953-05-11 2434444 1953-03-07 65 PCopO, 1955, vol 167, p 1
-3   2440410 1969-07-07 2440377 1969-06-04 33 SVO
4   2442300 1974-09-09 2442265 1974-08-05 35 SVO
5   2442570 1975-06-06 2442534 1975-05-01 36 SVO
6   2442830 1976-02-21 2442804 1976-01-26 26 SVO
7   2443100 1976-11-17 2443074 1976-10-22 26 SVO
8   2443367 1977-08-11 2443343 1977-07-18 24 SVO
9   2443640 1978-05-11 2443613 1978-04-14 27 SVO
10 9.5 2443907 1979-02-02 2443883 1979-01-09 24 SVO
11 9.8 2444172 1979-10-25 2444152 1979-10-05 20 SVO
12   2444450 1980-07-29 2444422 1980-07-01 28 SVO
13   2444710 1981-04-15 2444692 1981-03-28 18 SVO
14 10.0 2444987 1982-01-17 2444961 1981-12-22 26 SVO
15 9.4 2445267 1982-10-24 2445231 1982-09-18 36 SVO
16   2445529 1983-07-13 2445501 1983-06-15 28 SVO
17 9.7 2445800 1984-04-09 2445771 1984-03-11 29 SVO
18 9.8 2446075 1985-01-09 2446040 1984-12-05 35 SVO
19 9.3 2446336 1985-09-27 2446310 1985-09-01 26 SVO
20 9.4 2446610 1986-06-28 2446580 1986-05-29 30 SVO
21 10.0 2446885 1987-03-30 2446849 1987-02-22 36 SVO
22   2447150 1987-12-20 2447119 1987-11-19 31 SVO
23 9.7 2447430 1988-09-25 2447389 1988-08-15 41 SVO
24 9.6 2447702 1989-06-24 2447658 1989-05-11 44 SVO
25 9.0 2447961 1990-03-10 2447928 1990-02-05 33 SVO
26 9.5 2448234 1990-12-08 2448198 1990-11-02 36 SVO
27 10.0 2448503 1991-09-03 2448467 1991-07-29 36 SVO
28 8.9 2448766 1992-05-23 2448737 1992-04-24 29 SVO
29 9.7 2449042 1993-02-23 2449007 1993-01-19 35 SVO
30 9.3 2449310 1993-11-18 2449276 1993-10-15 34 SVO
31 9.5 2449576 1994-08-11 2449546 1994-07-12 30 SVO
32 9.4 2449845 1995-05-07 2449816 1995-04-08 29 SVO
33 10.0 2450124 1996-02-10 2450085 1996-01-02 39 SVO
34 9.5 2450386 1996-10-29 2450355 1996-09-28 31 SVO
35 9.6 2450650 1997-07-20 2450625 1997-06-25 25 SVO
36 9.7 2450920 1998-04-16 2450894 1998-03-21 26 SVO
37 9.5 2451192 1999-01-13 2451164 1998-12-16 28 SVO
38 9.1 2451452 1999-09-30 2451434 1999-09-12 18 SVO
39 9.7 2451726 2000-06-30 2451704 2000-06-08 22 SVO
40 9.7 2451997 2001-03-28 2451973 2001-03-04 24 SVO
41 9.3 2452257 2001-12-13 2452243 2001-11-29 14 SVO
42 9.9 2452522 2002-09-04 2452513 2002-08-26 9 SVO
43 9.4 2452784 2003-05-24 2452782 2003-05-22 2 SVO
44 10.3 2453066 2004-03-01 2453052 2004-02-16 14 SVO
45 9.7 2453326 2004-11-16 2453322 2004-11-12 4 SVO
46 9.3 2453582 2005-07-30 2453591 2005-08-08 -9 SVO
47 9.7 2453848 2006-04-22 2453861 2006-05-05 -13 SVO
48 9.9 2454112 2007-01-11 2454131 2007-01-30 -19 SVO
49 10.0 2454382 2007-10-08 2454400 2007-10-26 -18 SVO
50 9.5 2454639 2008-06-21 2454670 2008-07-22 -31 SVO
51 9.9 2454911 2009-03-20 2454940 2009-04-18 -29 SVO
52 9.7 2455170 2009-12-04 2455209 2010-01-12 -39 SVO
53 9.9 2455452 2010-09-12 2455479 2010-10-09 -27 SVO
54 10.4 2455726 2011-06-13 2455749 2011-07-06 -23 SVO
55 9.6 2455992 2012-03-05 2456018 2012-03-31 -26 SVO
56 10.1 2456253 2012-11-21 2456288 2012-12-26 -35 SVO
57 9.3 2456518 2013-08-13 2456558 2013-09-22 -40 SVO
58 10.2 2456800 2014-05-22 2456827 2014-06-18 -27 SVO
59 9.4 2457056 2015-02-02 2457097 2015-03-15 -41 SVO
60   2457325 2015-10-29 2457367 2015-12-10 -42 SVO
61 9.3 2457597 2016-07-27 2457637 2016-09-05 -40 SVO
62   2457865 2017-04-21 2457906 2017-06-01 -41 SVO
63   2458135 2018-01-16 2458176 2018-02-26 -41 SVO
64 9.6 2458395 2018-10-03 2458446 2018-11-23 -51 SVO
65 9.2 2458656 2019-06-21 2458715 2019-08-19 -59 SVO
66 9.5 2458932 2020-03-23 2458985 2020-05-15 -53 SVO
67 9.6 2459203 2020-12-19 2459255 2021-02-09 -52 SVO
68 9.7 2459477 2021-09-19 2459524 2021-11-05 -47 SVO
69 9.4 2459749 2022-06-18 2459794 2022-08-02 -45 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.