Maxima for DD Cyg
Period: 148.02, Epoch: 2444563.6

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-195   2415676 1901-10-18 2415699 1901-11-10 -23 SVO
-191   2416279 1903-06-13 2416291 1903-06-25 -12 SVO
-190   2416420 1903-11-01 2416439 1903-11-20 -19 SVO
-188   2416730 1904-09-06 2416735 1904-09-11 -5 SVO
-183   2417460 1906-09-06 2417475 1906-09-21 -15 SVO
-176   2418500 1909-07-12 2418511 1909-07-23 -11 SVO
-171   2419250 1911-08-01 2419251 1911-08-02 -1 SVO
-166   2419990 1913-08-10 2419992 1913-08-12 -2 SVO
-163   2420419 1914-10-13 2420436 1914-10-30 -17 SVO
-162   2420570 1915-03-13 2420584 1915-03-27 -14 SVO
-158   2421180 1916-11-12 2421176 1916-11-08 4 SVO
-146   2422956 1921-09-23 2422952 1921-09-19 4 SVO
-141   2423690 1923-09-27 2423692 1923-09-29 -2 SVO
-139   2423990 1924-07-23 2423988 1924-07-21 2 SVO
-136   2424425 1925-10-01 2424432 1925-10-08 -7 SVO
-134   2424730 1926-08-02 2424728 1926-07-31 2 SVO
-133   2424878 1926-12-28 2424876 1926-12-26 2 GuL, 1936, 2.2
-132   2425016 1927-05-15 2425024 1927-05-23 -8 GuL, 1936, 2.2
-131   2425171 1927-10-17 2425172 1927-10-18 -1 GuL, 1936, 2.2
-129   2425465 1928-08-06 2425468 1928-08-09 -3 GuL, 1936, 2.2
-128   2425604 1928-12-23 2425616 1929-01-04 -12 AN, 1934, vol 252, p 171
-127   2425750 1929-05-18 2425764 1929-06-01 -14 SVO
-126   2425907 1929-10-22 2425913 1929-10-28 -6 AN, 1934, vol 252, p 171
-125   2426059 1930-03-23 2426061 1930-03-25 -2 AN, 1934, vol 252, p 171
-124   2426197 1930-08-08 2426209 1930-08-20 -12 AN, 1934, vol 252, p 171
-121   2426644 1931-10-29 2426653 1931-11-07 -9 AN, 1934, vol 252, p 171
-119   2426920 1932-07-31 2426949 1932-08-29 -29 AN, 1934, vol 252, p 171, GuL, 1936, 2.2
-117   2427234 1933-06-10 2427245 1933-06-21 -11 SVO
-116   2427378 1933-11-01 2427393 1933-11-16 -15 SVO
-115   2427526 1934-03-29 2427541 1934-04-13 -15 SVO
-114   2427670 1934-08-20 2427689 1934-09-08 -19 GuL, 1936, 2.2
-112   2427975 1935-06-21 2427985 1935-07-01 -10 SVO
-109   2428410 1936-08-29 2428429 1936-09-17 -19 SVO
-107   2428713 1937-06-28 2428725 1937-07-10 -12 SVO
-104   2429160 1938-09-18 2429169 1938-09-27 -9 SVO
-102   2429457 1939-07-12 2429465 1939-07-20 -8 SVO
-99   2429916 1940-10-13 2429909 1940-10-06 7 SVO
-97   2430196 1941-07-20 2430205 1941-07-29 -9 SVO
-95   2430505 1942-05-25 2430501 1942-05-21 4 SVO
-94   2430656 1942-10-23 2430649 1942-10-16 7 SVO
-92   2430953 1943-08-16 2430945 1943-08-08 8 SVO
-90   2431240 1944-05-29 2431241 1944-05-30 -1 SVO
-89   2431390 1944-10-26 2431389 1944-10-25 1 SVO
-87   2431700 1945-09-01 2431685 1945-08-17 15 SVO
-85   2431995 1946-06-23 2431982 1946-06-10 13 SVO
-82   2432438 1947-09-09 2432426 1947-08-28 12 SVO
-80   2432729 1948-06-26 2432722 1948-06-19 7 SVO
-75   2433485 1950-07-22 2433462 1950-06-29 23 SVO
-73   2433775 1951-05-08 2433758 1951-04-21 17 SVO
-72   2433915 1951-09-25 2433906 1951-09-16 9 SVO
-70   2434220 1952-07-26 2434202 1952-07-08 18 SVO
-63   2435248 1955-05-20 2435238 1955-05-10 10 PZ, 1963, vol 14, p 504
-62   2435392 1955-10-11 2435386 1955-10-05 6 PZ, 1963, vol 14, p 504
-58   2435987 1957-05-28 2435978 1957-05-19 9 MitVS, 1961, vol 1, p 590
-57   2436142 1957-10-30 2436126 1957-10-14 16 MitVS, 1961, vol 1, p 590
-55   2436440 1958-08-24 2436422 1958-08-06 18 MitVS, 1961, vol 1, p 590
-50   2437191 1960-09-13 2437162 1960-08-15 29 MitVS, 1961, vol 1, p 590, PZ, 1963, vol 14, p 504
-47   2437630 1961-11-26 2437606 1961-11-02 24 MitVS, 1967, vol 4, p 150
-46   2437765 1962-04-10 2437755 1962-03-31 10 MitVS, 1967, vol 4, p 150
-45   2437916 1962-09-08 2437903 1962-08-26 13 MitVS, 1967, vol 4, p 150
-43   2438219 1963-07-08 2438199 1963-06-18 20 MitVS, 1967, vol 4, p 150
-42   2438356 1963-11-22 2438347 1963-11-13 9 MitVS, 1967, vol 4, p 150
-41   2438500 1964-04-14 2438495 1964-04-09 5 MitVS, 1967, vol 4, p 150
-40   2438642 1964-09-03 2438643 1964-09-04 -1 MitVS, 1967, vol 4, p 150
-38   2438958 1965-07-16 2438939 1965-06-27 19 MitVS, 1967, vol 4, p 150
-37   2439115 1965-12-20 2439087 1965-11-22 28 MitVS, 1967, vol 4, p 150
-36   2439240 1966-04-24 2439235 1966-04-19 5 MitVS, 1967, vol 4, p 150
-35   2439395 1966-09-26 2439383 1966-09-14 12 MitVS, 1967, vol 4, p 150
-25   2440880 1970-10-20 2440863 1970-10-03 17 SVO
-23   2441170 1971-08-06 2441159 1971-07-26 11 SVO
-22   2441310 1971-12-24 2441307 1971-12-21 3 SVO
-21   2441460 1972-05-22 2441455 1972-05-17 5 SVO
-20 10.1 2441608 1972-10-17 2441603 1972-10-12 5 SVO
-18 10.5 2441903 1973-08-08 2441899 1973-08-04 4 SVO
-16   2442195 1974-05-27 2442195 1974-05-27 0 SVO
-15 10.2 2442343 1974-10-22 2442343 1974-10-22 0 SVO
-13 10.7 2442643 1975-08-18 2442639 1975-08-14 4 SVO
-11   2442930 1976-05-31 2442935 1976-06-05 -5 SVO
-10   2443085 1976-11-02 2443083 1976-10-31 2 SVO
-8   2443380 1977-08-24 2443379 1977-08-23 1 SVO
-6   2443670 1978-06-10 2443675 1978-06-15 -5 SVO
-5   2443825 1978-11-12 2443824 1978-11-11 1 SVO
-3   2444115 1979-08-29 2444120 1979-09-03 -5 SVO
-1   2444425 1980-07-04 2444416 1980-06-25 9 SVO
0   2444570 1980-11-26 2444564 1980-11-20 6 SVO
1   2444725 1981-04-30 2444712 1981-04-17 13 SVO
2 10.1 2444870 1981-09-22 2444860 1981-09-12 10 SVO
4   2445165 1982-07-14 2445156 1982-07-05 9 SVO
5   2445310 1982-12-06 2445304 1982-11-30 6 SVO
7 10.1 2445603 1983-09-25 2445600 1983-09-22 3 SVO
9 10.0 2445896 1984-07-14 2445896 1984-07-14 0 SVO
12 9.9 2446345 1985-10-06 2446340 1985-10-01 5 SVO
14 9.7 2446630 1986-07-18 2446636 1986-07-24 -6 SVO
15 10.1 2446780 1986-12-15 2446784 1986-12-19 -4 SVO
16   2446925 1987-05-09 2446932 1987-05-16 -7 SVO
17 10.3 2447081 1987-10-12 2447080 1987-10-11 1 SVO
18   2447230 1988-03-09 2447228 1988-03-07 2 SVO
19 9.9 2447379 1988-08-05 2447376 1988-08-02 3 SVO
20 10.0 2447521 1988-12-25 2447524 1988-12-28 -3 SVO
21 10.1 2447673 1989-05-26 2447672 1989-05-25 1 SVO
22 10.2 2447828 1989-10-28 2447820 1989-10-20 8 SVO
23 10.1 2447985 1990-04-03 2447968 1990-03-17 17 SVO
24 9.8 2448120 1990-08-16 2448116 1990-08-12 4 SVO
25   2448270 1991-01-13 2448264 1991-01-07 6 SVO
26 10.2 2448426 1991-06-18 2448412 1991-06-04 14 SVO
27 9.8 2448565 1991-11-04 2448560 1991-10-30 5 SVO
28   2448720 1992-04-07 2448708 1992-03-26 12 SVO
29 9.8 2448866 1992-08-31 2448856 1992-08-21 10 SVO
30 10.8 2448999 1993-01-11 2449004 1993-01-16 -5 SVO
31 9.7 2449164 1993-06-25 2449152 1993-06-13 12 SVO
32   2449326 1993-12-04 2449300 1993-11-08 26 AFOEV
33 10.1 2449470 1994-04-27 2449448 1994-04-05 22 SVO
34 9.9 2449605 1994-09-09 2449596 1994-08-31 9 SVO
35   2449755 1995-02-06 2449745 1995-01-27 10 SVO
36 10.2 2449906 1995-07-07 2449893 1995-06-24 13 SVO
37 9.8 2450048 1995-11-26 2450041 1995-11-19 7 SVO
38   2450214 1996-05-10 2450189 1996-04-15 25 AFOEV
39 9.8 2450348 1996-09-21 2450337 1996-09-10 11 SVO
40   2450500 1997-02-20 2450485 1997-02-05 15 SVO
41 9.7 2450636 1997-07-06 2450633 1997-07-03 3 SVO
42 10.3 2450796 1997-12-13 2450781 1997-11-28 15 SVO
43 9.8 2450934 1998-04-30 2450929 1998-04-25 5 SVO
44 10.1 2451078 1998-09-21 2451077 1998-09-20 1 SVO
45   2451222 1999-02-12 2451225 1999-02-15 -3 AFOEV
46 9.9 2451372 1999-07-12 2451373 1999-07-13 -1 SVO
47 9.8 2451518 1999-12-05 2451521 1999-12-08 -3 SVO
48   2451673 2000-05-08 2451669 2000-05-04 4 AFOEV
49 10.1 2451825 2000-10-07 2451817 2000-09-29 8 SVO
50   2451968 2001-02-27 2451965 2001-02-24 3 AFOEV
51 9.8 2452113 2001-07-22 2452113 2001-07-22 0 SVO
52 9.9 2452254 2001-12-10 2452261 2001-12-17 -7 SVO
53 10.1 2452403 2002-05-08 2452409 2002-05-14 -6 SVO
54 10.2 2452555 2002-10-07 2452557 2002-10-09 -2 SVO
55 10.0 2452698 2003-02-27 2452705 2003-03-06 -7 SVO
56 9.8 2452850 2003-07-29 2452853 2003-08-01 -3 SVO
57 9.9 2452996 2003-12-22 2453001 2003-12-27 -5 SVO
58 10.0 2453146 2004-05-20 2453149 2004-05-23 -3 SVO
59 9.8 2453290 2004-10-11 2453297 2004-10-18 -7 SVO
60   2453440 2005-03-10 2453445 2005-03-15 -5 SVO
61 9.9 2453586 2005-08-03 2453593 2005-08-10 -7 SVO
62   2453740 2006-01-04 2453741 2006-01-05 -1 AFOEV
63   2453883 2006-05-27 2453889 2006-06-02 -6 AFOEV
64 10.1 2454038 2006-10-29 2454037 2006-10-28 1 SVO
65   2454180 2007-03-20 2454185 2007-03-25 -5 SVO
66 9.6 2454331 2007-08-18 2454333 2007-08-20 -2 SVO
67   2454470 2008-01-04 2454481 2008-01-15 -11 SVO
68 10.2 2454625 2008-06-07 2454629 2008-06-11 -4 SVO
69 9.9 2454774 2008-11-03 2454777 2008-11-06 -3 SVO
70   2454919 2009-03-28 2454925 2009-04-03 -6 AFOEV
71 9.7 2455060 2009-08-16 2455073 2009-08-29 -13 SVO
72   2455225 2010-01-28 2455221 2010-01-24 4 SVO
73 9.7 2455378 2010-06-30 2455369 2010-06-21 9 SVO
74 10.2 2455519 2010-11-18 2455517 2010-11-16 2 SVO
75 9.7 2455656 2011-04-04 2455666 2011-04-14 -10 SVO
76 10.0 2455804 2011-08-30 2455814 2011-09-09 -10 SVO
77 10.4 2455973 2012-02-15 2455962 2012-02-04 11 SVO
78 9.9 2456109 2012-06-30 2456110 2012-07-01 -1 SVO
79 10.4 2456262 2012-11-30 2456258 2012-11-26 4 SVO
80   2456400 2013-04-17 2456406 2013-04-23 -6 SVO
81   2456560 2013-09-24 2456554 2013-09-18 6 SVO
83   2456855 2014-07-16 2456850 2014-07-11 5 SVO
84   2456990 2014-11-28 2456998 2014-12-06 -8 SVO
85 9.7 2457131 2015-04-18 2457146 2015-05-03 -15 SVO
86 10.4 2457285 2015-09-19 2457294 2015-09-28 -9 SVO
87   2457440 2016-02-21 2457442 2016-02-23 -2 SVO
88 9.7 2457583 2016-07-13 2457590 2016-07-20 -7 SVO
89 9.8 2457715 2016-11-22 2457738 2016-12-15 -23 SVO
90   2457866 2017-04-22 2457886 2017-05-12 -20 SVO
91 9.8 2458014 2017-09-17 2458034 2017-10-07 -20 SVO
92   2458165 2018-02-15 2458182 2018-03-04 -17 SVO
93   2458316 2018-07-16 2458330 2018-07-30 -14 SVO
94   2458450 2018-11-27 2458478 2018-12-25 -28 SVO
95 9.9 2458605 2019-05-01 2458626 2019-05-22 -21 SVO
96 10.0 2458757 2019-09-30 2458774 2019-10-17 -17 SVO
97   2458900 2020-02-20 2458922 2020-03-13 -22 SVO
98 10.3 2459058 2020-07-27 2459070 2020-08-08 -12 SVO
99 9.8 2459204 2020-12-20 2459218 2021-01-03 -14 SVO
100 9.9 2459362 2021-05-27 2459366 2021-05-31 -4 SVO
101 9.6 2459498 2021-10-10 2459514 2021-10-26 -16 SVO
102   2459650 2022-03-11 2459662 2022-03-23 -12 SVO
103 9.8 2459805 2022-08-13 2459810 2022-08-18 -5 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.