Maxima for DD Cyg
Period: 147.6, Epoch: 2444568
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-195   2415676 1901-10-18 2415786 1902-02-05 -110 SVO
-193   2415970 1902-08-08 2416081 1902-11-27 -111 SVO
-191   2416270 1903-06-04 2416376 1903-09-18 -106 SVO
-190   2416409 1903-10-21 2416524 1904-02-13 -115 SVO
-188   2416720 1904-08-27 2416819 1904-12-04 -99 SVO
-186   2417005 1905-06-08 2417114 1905-09-25 -109 SVO
-185   2417150 1905-10-31 2417262 1906-02-20 -112 SVO
-183   2417460 1906-09-06 2417557 1906-12-12 -97 SVO
-181   2417750 1907-06-23 2417852 1907-10-03 -102 SVO
-178   2418195 1908-09-10 2418295 1908-12-19 -100 SVO
-177   2418350 1909-02-12 2418443 1909-05-16 -93 SVO
-176   2418500 1909-07-12 2418590 1909-10-10 -90 SVO
-175   2418645 1909-12-04 2418738 1910-03-07 -93 SVO
-173   2418940 1910-09-25 2419033 1910-12-27 -93 SVO
-171   2419250 1911-08-01 2419328 1911-10-18 -78 SVO
-168   2419690 1912-10-14 2419771 1913-01-03 -81 SVO
-166   2419990 1913-08-10 2420066 1913-10-25 -76 SVO
-163   2420425 1914-10-19 2420509 1915-01-11 -84 SVO
-162   2420570 1915-03-13 2420657 1915-06-08 -87 SVO
-158   2421180 1916-11-12 2421247 1917-01-18 -67 SVO
-156   2421465 1917-08-24 2421542 1917-11-09 -77 SVO
-152   2422070 1919-04-21 2422133 1919-06-23 -63 SVO
-148   2422660 1920-12-01 2422723 1921-02-02 -63 SVO
-147   2422800 1921-04-20 2422871 1921-06-30 -71 SVO
-146   2422954 1921-09-21 2423018 1921-11-24 -64 SVO
-144   2423255 1922-07-19 2423314 1922-09-16 -59 SVO
-142   2423540 1923-04-30 2423609 1923-07-08 -69 SVO
-141   2423690 1923-09-27 2423756 1923-12-02 -66 SVO
-139   2423990 1924-07-23 2424052 1924-09-23 -62 SVO
-136   2424425 1925-10-01 2424494 1925-12-09 -69 SVO
-134   2424730 1926-08-02 2424790 1926-10-01 -60 SVO
-133   2424878 1926-12-28 2424937 1927-02-25 -59 GuL, 1936, 2.2
-132   2425016 1927-05-15 2425085 1927-07-23 -69 GuL, 1936, 2.2
-131   2425171 1927-10-17 2425232 1927-12-17 -61 GuL, 1936, 2.2
-129   2425465 1928-08-06 2425528 1928-10-08 -63 GuL, 1936, 2.2
-128   2425604 1928-12-23 2425675 1929-03-04 -71 AN, 1934, vol 252, p 171
-127   2425750 1929-05-18 2425823 1929-07-30 -73 SVO
-126   2425907 1929-10-22 2425970 1929-12-24 -63 AN, 1934, vol 252, p 171
-125   2426059 1930-03-23 2426118 1930-05-21 -59 AN, 1934, vol 252, p 171
-124   2426197 1930-08-08 2426266 1930-10-16 -69 AN, 1934, vol 252, p 171
-122   2426485 1931-05-23 2426561 1931-08-07 -76 SVO
-121   2426644 1931-10-29 2426708 1932-01-01 -64 AN, 1934, vol 252, p 171
-119   2426941 1932-08-21 2427004 1932-10-23 -63 SVO
-117   2427233 1933-06-09 2427299 1933-08-14 -66 SVO
-116   2427378 1933-11-01 2427446 1934-01-08 -68 SVO
-115   2427526 1934-03-29 2427594 1934-06-05 -68 SVO
-114   2427670 1934-08-20 2427742 1934-10-31 -72 GuL, 1936, 2.2
-112   2427975 1935-06-21 2428037 1935-08-22 -62 SVO
-111   2428120 1935-11-13 2428184 1936-01-16 -64 SVO
-109   2428410 1936-08-29 2428480 1936-11-07 -70 SVO
-107   2428712 1937-06-27 2428775 1937-08-29 -63 SVO
-106   2428860 1937-11-22 2428922 1938-01-23 -62 SVO
-105   2429010 1938-04-21 2429070 1938-06-20 -60 SVO
-104   2429160 1938-09-18 2429218 1938-11-15 -58 SVO
-102   2429457 1939-07-12 2429513 1939-09-06 -56 SVO
-100   2429760 1940-05-10 2429808 1940-06-27 -48 SVO
-99   2429917 1940-10-14 2429956 1940-11-22 -39 SVO
-97   2430196 1941-07-20 2430251 1941-09-13 -55 SVO
-95   2430505 1942-05-25 2430546 1942-07-05 -41 SVO
-94   2430656 1942-10-23 2430694 1942-11-30 -38 SVO
-92   2430951 1943-08-14 2430989 1943-09-21 -38 SVO
-90   2431240 1944-05-29 2431284 1944-07-12 -44 SVO
-89   2431390 1944-10-26 2431432 1944-12-07 -42 SVO
-87   2431700 1945-09-01 2431727 1945-09-28 -27 SVO
-85   2431995 1946-06-23 2432022 1946-07-20 -27 SVO
-83   2432280 1947-04-04 2432317 1947-05-11 -37 SVO
-82   2432438 1947-09-09 2432465 1947-10-06 -27 SVO
-80   2432729 1948-06-26 2432760 1948-07-27 -31 SVO
-75   2433485 1950-07-22 2433498 1950-08-04 -13 SVO
-73   2433775 1951-05-08 2433793 1951-05-26 -18 SVO
-72   2433915 1951-09-25 2433941 1951-10-21 -26 SVO
-70   2434220 1952-07-26 2434236 1952-08-11 -16 SVO
-63   2435248 1955-05-20 2435269 1955-06-10 -21 PZ, 1963, vol 14, p 504
-62   2435392 1955-10-11 2435417 1955-11-05 -25 PZ, 1963, vol 14, p 504
-58   2435987 1957-05-28 2436007 1957-06-17 -20 MitVS, 1961, vol 1, p 590
-57   2436142 1957-10-30 2436155 1957-11-12 -13 MitVS, 1961, vol 1, p 590
-55   2436440 1958-08-24 2436450 1958-09-03 -10 MitVS, 1961, vol 1, p 590
-50   2437191 1960-09-13 2437188 1960-09-10 3 MitVS, 1961, vol 1, p 590, PZ, 1963, vol 14, p 504
-47   2437630 1961-11-26 2437631 1961-11-27 -1 MitVS, 1967, vol 4, p 150
-46   2437765 1962-04-10 2437778 1962-04-23 -13 MitVS, 1967, vol 4, p 150
-45   2437916 1962-09-08 2437926 1962-09-18 -10 MitVS, 1967, vol 4, p 150
-43   2438219 1963-07-08 2438221 1963-07-10 -2 MitVS, 1967, vol 4, p 150
-42   2438356 1963-11-22 2438369 1963-12-05 -13 MitVS, 1967, vol 4, p 150
-41   2438500 1964-04-14 2438516 1964-04-30 -16 MitVS, 1967, vol 4, p 150
-40   2438642 1964-09-03 2438664 1964-09-25 -22 MitVS, 1967, vol 4, p 150
-38   2438958 1965-07-16 2438959 1965-07-17 -1 MitVS, 1967, vol 4, p 150
-37   2439115 1965-12-20 2439107 1965-12-12 8 MitVS, 1967, vol 4, p 150
-36   2439240 1966-04-24 2439254 1966-05-08 -14 MitVS, 1967, vol 4, p 150
-35   2439395 1966-09-26 2439402 1966-10-03 -7 MitVS, 1967, vol 4, p 150
-28   2440430 1969-07-27 2440435 1969-08-01 -5 SVO
-25   2440880 1970-10-20 2440878 1970-10-18 2 SVO
-23   2441170 1971-08-06 2441173 1971-08-09 -3 SVO
-22   2441310 1971-12-24 2441321 1972-01-04 -11 SVO
-21   2441460 1972-05-22 2441468 1972-05-30 -8 SVO
-20 10.1 2441608 1972-10-17 2441616 1972-10-25 -8 SVO
-18 10.5 2441903 1973-08-08 2441911 1973-08-16 -8 SVO
-16   2442195 1974-05-27 2442206 1974-06-07 -11 SVO
-15 10.2 2442343 1974-10-22 2442354 1974-11-02 -11 SVO
-13 10.7 2442643 1975-08-18 2442649 1975-08-24 -6 SVO
-11   2442930 1976-05-31 2442944 1976-06-14 -14 SVO
-10   2443085 1976-11-02 2443092 1976-11-09 -7 SVO
-8   2443380 1977-08-24 2443387 1977-08-31 -7 SVO
-6   2443670 1978-06-10 2443682 1978-06-22 -12 SVO
-5   2443825 1978-11-12 2443830 1978-11-17 -5 SVO
-3   2444115 1979-08-29 2444125 1979-09-08 -10 SVO
-1   2444425 1980-07-04 2444420 1980-06-29 5 SVO
0   2444570 1980-11-26 2444568 1980-11-24 2 SVO
1   2444725 1981-04-30 2444716 1981-04-21 9 SVO
2 10.1 2444870 1981-09-22 2444863 1981-09-15 7 SVO
4   2445165 1982-07-14 2445158 1982-07-07 7 SVO
5   2445310 1982-12-06 2445306 1982-12-02 4 SVO
6   2445445 1983-04-20 2445454 1983-04-29 -9 SVO
7 10.1 2445603 1983-09-25 2445601 1983-09-23 2 SVO
8   2445745 1984-02-14 2445749 1984-02-18 -4 SVO
9 10.0 2445896 1984-07-14 2445896 1984-07-14 0 SVO
10   2446035 1984-11-30 2446044 1984-12-09 -9 SVO
11   2446190 1985-05-04 2446192 1985-05-06 -2 SVO
12 9.9 2446345 1985-10-06 2446339 1985-09-30 6 SVO
13   2446480 1986-02-18 2446487 1986-02-25 -7 SVO
14 9.7 2446630 1986-07-18 2446634 1986-07-22 -4 SVO
15 10.1 2446780 1986-12-15 2446782 1986-12-17 -2 SVO
16   2446925 1987-05-09 2446930 1987-05-14 -5 SVO
17 10.3 2447081 1987-10-12 2447077 1987-10-08 4 SVO
18   2447230 1988-03-09 2447225 1988-03-04 5 SVO
19 9.9 2447379 1988-08-05 2447372 1988-07-29 7 SVO
20 10.0 2447521 1988-12-25 2447520 1988-12-24 1 SVO
21 10.1 2447673 1989-05-26 2447668 1989-05-21 5 SVO
22 10.2 2447828 1989-10-28 2447815 1989-10-15 13 SVO
23 10.1 2447985 1990-04-03 2447963 1990-03-12 22 SVO
24 9.8 2448120 1990-08-16 2448110 1990-08-06 10 SVO
25   2448270 1991-01-13 2448258 1991-01-01 12 SVO
26 10.2 2448426 1991-06-18 2448406 1991-05-29 20 SVO
27 9.8 2448565 1991-11-04 2448553 1991-10-23 12 SVO
28   2448720 1992-04-07 2448701 1992-03-19 19 SVO
29 9.8 2448866 1992-08-31 2448848 1992-08-13 18 SVO
30 10.8 2448999 1993-01-11 2448996 1993-01-08 3 SVO
31 9.7 2449164 1993-06-25 2449144 1993-06-05 20 SVO
32   2449326 1993-12-04 2449291 1993-10-30 35 AFOEV
33 10.1 2449470 1994-04-27 2449439 1994-03-27 31 SVO
34 9.9 2449605 1994-09-09 2449586 1994-08-21 19 SVO
35   2449755 1995-02-06 2449734 1995-01-16 21 SVO
36 10.2 2449906 1995-07-07 2449882 1995-06-13 24 SVO
37 9.8 2450048 1995-11-26 2450029 1995-11-07 19 SVO
38   2450214 1996-05-10 2450177 1996-04-03 37 AFOEV
39 9.8 2450348 1996-09-21 2450324 1996-08-28 24 SVO
40   2450500 1997-02-20 2450472 1997-01-23 28 SVO
41 9.7 2450636 1997-07-06 2450620 1997-06-20 16 SVO
42 10.3 2450796 1997-12-13 2450767 1997-11-14 29 SVO
43 9.8 2450934 1998-04-30 2450915 1998-04-11 19 SVO
44 10.1 2451078 1998-09-21 2451062 1998-09-05 16 SVO
45   2451222 1999-02-12 2451210 1999-01-31 12 AFOEV
46 9.9 2451372 1999-07-12 2451358 1999-06-28 14 SVO
47 9.8 2451518 1999-12-05 2451505 1999-11-22 13 SVO
48   2451673 2000-05-08 2451653 2000-04-18 20 AFOEV
49 10.1 2451825 2000-10-07 2451800 2000-09-12 25 SVO
50   2451968 2001-02-27 2451948 2001-02-07 20 AFOEV
51 9.8 2452113 2001-07-22 2452096 2001-07-05 17 SVO
52 9.9 2452254 2001-12-10 2452243 2001-11-29 11 SVO
53 10.1 2452403 2002-05-08 2452391 2002-04-26 12 SVO
54 10.2 2452555 2002-10-07 2452538 2002-09-20 17 SVO
55 10.0 2452698 2003-02-27 2452686 2003-02-15 12 SVO
56 9.8 2452850 2003-07-29 2452834 2003-07-13 16 SVO
57 9.9 2452996 2003-12-22 2452981 2003-12-07 15 SVO
58 10.0 2453146 2004-05-20 2453129 2004-05-03 17 SVO
59 9.8 2453290 2004-10-11 2453276 2004-09-27 14 SVO
60   2453440 2005-03-10 2453424 2005-02-22 16 SVO
61 9.9 2453586 2005-08-03 2453572 2005-07-20 14 SVO
62   2453740 2006-01-04 2453719 2005-12-14 21 AFOEV
63   2453883 2006-05-27 2453867 2006-05-11 16 AFOEV
64 10.1 2454038 2006-10-29 2454014 2006-10-05 24 SVO
65   2454180 2007-03-20 2454162 2007-03-02 18 SVO
66 9.6 2454331 2007-08-18 2454310 2007-07-28 21 SVO
67   2454470 2008-01-04 2454457 2007-12-22 13 SVO
68 10.2 2454625 2008-06-07 2454605 2008-05-18 20 SVO
69 9.9 2454774 2008-11-03 2454752 2008-10-12 22 SVO
70   2454919 2009-03-28 2454900 2009-03-09 19 AFOEV
71 9.7 2455060 2009-08-16 2455048 2009-08-04 12 SVO
72   2455225 2010-01-28 2455195 2009-12-29 30 SVO
73 9.7 2455378 2010-06-30 2455343 2010-05-26 35 SVO
74 10.2 2455519 2010-11-18 2455490 2010-10-20 29 SVO
75 9.7 2455656 2011-04-04 2455638 2011-03-17 18 SVO
76 10.0 2455804 2011-08-30 2455786 2011-08-12 18 SVO
77 10.4 2455973 2012-02-15 2455933 2012-01-06 40 SVO
78 9.9 2456109 2012-06-30 2456081 2012-06-02 28 SVO
79 10.4 2456262 2012-11-30 2456228 2012-10-27 34 SVO
80   2456400 2013-04-17 2456376 2013-03-24 24 SVO
81   2456560 2013-09-24 2456524 2013-08-19 36 SVO
83   2456855 2014-07-16 2456819 2014-06-10 36 SVO
84   2456990 2014-11-28 2456966 2014-11-04 24 SVO
85 9.7 2457131 2015-04-18 2457114 2015-04-01 17 SVO
86 10.4 2457285 2015-09-19 2457262 2015-08-27 23 SVO
87   2457440 2016-02-21 2457409 2016-01-21 31 SVO
88 9.7 2457583 2016-07-13 2457557 2016-06-17 26 SVO
89 9.8 2457715 2016-11-22 2457704 2016-11-11 11 SVO
90   2457866 2017-04-22 2457852 2017-04-08 14 SVO
91 9.8 2458014 2017-09-17 2458000 2017-09-03 14 SVO
92   2458165 2018-02-15 2458147 2018-01-28 18 SVO
93   2458316 2018-07-16 2458295 2018-06-25 21 SVO
94   2458450 2018-11-27 2458442 2018-11-19 8 SVO
95 9.9 2458605 2019-05-01 2458590 2019-04-16 15 SVO
96 10.0 2458757 2019-09-30 2458738 2019-09-11 19 SVO
97   2458900 2020-02-20 2458885 2020-02-05 15 SVO
98 10.3 2459058 2020-07-27 2459033 2020-07-02 25 SVO
99 9.8 2459204 2020-12-20 2459180 2020-11-26 24 SVO
100 9.9 2459362 2021-05-27 2459328 2021-04-23 34 SVO
101 9.6 2459498 2021-10-10 2459476 2021-09-18 22 SVO
102   2459650 2022-03-11 2459623 2022-02-12 27 SVO
103 9.8 2459805 2022-08-13 2459771 2022-07-10 34 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.