Maxima for DR Cyg
Period: 313.88, Epoch: 2439419
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-85   2412735 1893-09-28 2412739 1893-10-02 -4 SVO
-78   2414934 1899-10-06 2414936 1899-10-08 -2 PZ, 1949, vol 7, p 151, AnHar, 1952, vol 118
-76   2415580 1901-07-14 2415564 1901-06-28 16 SVO
-75   2415892 1902-05-22 2415878 1902-05-08 14 AnHar, 1952, vol 118
-74   2416180 1903-03-06 2416192 1903-03-18 -12 AnHar, 1952, vol 118
-73   2416515 1904-02-04 2416506 1904-01-26 9 AnHar, 1952, vol 118
-72   2416835 1904-12-20 2416820 1904-12-05 15 SVO
-71   2417145 1905-10-26 2417134 1905-10-15 11 SVO
-70   2417465 1906-09-11 2417447 1906-08-24 18 PZ, 1949, vol 7, p 151
-68   2418104 1908-06-11 2418075 1908-05-13 29 AnHar, 1952, vol 118
-64   2419364 1911-11-23 2419331 1911-10-21 33 AnHar, 1952, vol 118
-63   2419673 1912-09-27 2419645 1912-08-30 28 AnHar, 1952, vol 118
-62   2419990 1913-08-10 2419958 1913-07-09 32 SVO
-60   2420602 1915-04-14 2420586 1915-03-29 16 AnHar, 1952, vol 118
-58   2421228 1916-12-30 2421214 1916-12-16 14 AnHar, 1952, vol 118
-57   2421550 1917-11-17 2421528 1917-10-26 22 SVO
-56   2421860 1918-09-23 2421842 1918-09-05 18 SVO
-55   2422170 1919-07-30 2422156 1919-07-16 14 SVO
-53   2422810 1921-04-30 2422783 1921-04-03 27 SVO
-50   2423745 1923-11-21 2423725 1923-11-01 20 SVO
-49   2424060 1924-10-01 2424039 1924-09-10 21 SVO
-48   2424362 1925-07-30 2424353 1925-07-21 9 AnHar, 1952, vol 118
-47   2424680 1926-06-13 2424667 1926-05-31 13 SVO
-46   2424995 1927-04-24 2424981 1927-04-10 14 AnHar, 1952, vol 118
-44   2425648 1929-02-05 2425608 1928-12-27 40 PZ, 1949, vol 7, p 151
-43   2425972 1929-12-26 2425922 1929-11-06 50 PZ, 1949, vol 7, p 151
-42   2426300 1930-11-19 2426236 1930-09-16 64 SVO
-41   2426616 1931-10-01 2426550 1931-07-27 66 PZ, 1949, vol 7, p 151
-40   2426925 1932-08-05 2426864 1932-06-05 61 AnHar, 1952, vol 118, PZ, 1949, vol 7, p 151
-39   2427250 1933-06-26 2427178 1933-04-15 72 SVO
-38   2427570 1934-05-12 2427492 1934-02-23 78 SVO
-35   2428508 1936-12-05 2428433 1936-09-21 75 AnHar, 1952, vol 118, PZ, 1949, vol 7, p 151
-34   2428796 1937-09-19 2428747 1937-08-01 49 PZ, 1949, vol 7, p 151
-33   2429110 1938-07-30 2429061 1938-06-11 49 SVO
-32   2429415 1939-05-31 2429375 1939-04-21 40 PZ, 1949, vol 7, p 151
-29   2430350 1941-12-21 2430316 1941-11-17 34 SVO
-28   2430670 1942-11-06 2430630 1942-09-27 40 SVO
-27   2430965 1943-08-28 2430944 1943-08-07 21 SVO
-26   2431277 1944-07-05 2431258 1944-06-16 19 SVO
-25   2431610 1945-06-03 2431572 1945-04-26 38 SVO
-19   2433460 1950-06-27 2433455 1950-06-22 5 SVO
-15   2434708 1953-11-26 2434711 1953-11-29 -3 MitVS, 1984, vol 10, p 116
-14   2435019 1954-10-03 2435025 1954-10-09 -6 MitVS, 1984, vol 10, p 116
-13   2435331 1955-08-11 2435339 1955-08-19 -8 MitVS, 1984, vol 10, p 116
-12   2435700 1956-08-14 2435652 1956-06-27 48 MitVS, 1984, vol 10, p 116
-11   2435972 1957-05-13 2435966 1957-05-07 6 MitVS, 1984, vol 10, p 116
-8   2436900 1959-11-27 2436908 1959-12-05 -8 MitVS, 1984, vol 10, p 116
-7   2437194 1960-09-16 2437222 1960-10-14 -28 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
-6   2437516 1961-08-04 2437536 1961-08-24 -20 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
-5   2437841 1962-06-25 2437850 1962-07-04 -9 MitVS, 1967, vol 4, p 150, MitVS, 1984, vol 10, p 116
-4   2438166 1963-05-16 2438163 1963-05-13 3 MitVS, 1967, vol 4, p 150, MitVS, 1984, vol 10, p 116
-3   2438466 1964-03-11 2438477 1964-03-22 -11 MitVS, 1984, vol 10, p 116
-2   2438760 1964-12-30 2438791 1965-01-30 -31 MitVS, 1984, vol 10, p 116
-1   2439107 1965-12-12 2439105 1965-12-10 2 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
0   2439418 1966-10-19 2439419 1966-10-20 -1 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
1   2439730 1967-08-27 2439733 1967-08-30 -3 MitVS, 1984, vol 10, p 116
2   2440048 1968-07-10 2440047 1968-07-09 1 MitVS, 1984, vol 10, p 116
3   2440355 1969-05-13 2440361 1969-05-19 -6 MitVS, 1984, vol 10, p 116
6   2441300 1971-12-14 2441302 1971-12-16 -2 MitVS, 1984, vol 10, p 116
7   2441620 1972-10-29 2441616 1972-10-25 4 MitVS, 1984, vol 10, p 116
8   2441922 1973-08-27 2441930 1973-09-04 -8 MitVS, 1984, vol 10, p 116
9   2442228 1974-06-29 2442244 1974-07-15 -16 MitVS, 1984, vol 10, p 116
10   2442550 1975-05-17 2442558 1975-05-25 -8 SVO
11   2442870 1976-04-01 2442872 1976-04-03 -2 MitVS, 1984, vol 10, p 116
13   2443477 1977-11-29 2443499 1977-12-21 -22 MitVS, 1984, vol 10, p 116
14   2443790 1978-10-08 2443813 1978-10-31 -23 MitVS, 1984, vol 10, p 116
15   2444108 1979-08-22 2444127 1979-09-10 -19 MitVS, 1984, vol 10, p 116
16   2444410 1980-06-19 2444441 1980-07-20 -31 MitVS, 1984, vol 10, p 116
17   2444732 1981-05-07 2444755 1981-05-30 -23 MitVS, 1984, vol 10, p 116
19   2445360 1983-01-25 2445383 1983-02-17 -23 SVO
20   2445665 1983-11-26 2445697 1983-12-28 -32 SVO
21 8.9 2445985 1984-10-11 2446010 1984-11-05 -25 SVO
22 10.1 2446296 1985-08-18 2446324 1985-09-15 -28 SVO
23   2446612 1986-06-30 2446638 1986-07-26 -26 AFOEV
24   2446910 1987-04-24 2446952 1987-06-05 -42 SVO
26 9.0 2447536 1989-01-09 2447580 1989-02-22 -44 SVO
27 8.7 2447845 1989-11-14 2447894 1990-01-02 -49 SVO
28 9.2 2448155 1990-09-20 2448208 1990-11-12 -53 SVO
29 9.0 2448475 1991-08-06 2448522 1991-09-22 -47 SVO
30   2448790 1992-06-16 2448835 1992-07-31 -45 SVO
31   2449110 1993-05-02 2449149 1993-06-10 -39 AFOEV
32 8.9 2449409 1994-02-25 2449463 1994-04-20 -54 SVO
33 10.0 2449727 1995-01-09 2449777 1995-02-28 -50 SVO
34 9.4 2450044 1995-11-22 2450091 1996-01-08 -47 SVO
35 8.9 2450350 1996-09-23 2450405 1996-11-17 -55 SVO
36 9.3 2450658 1997-07-28 2450719 1997-09-27 -61 SVO
37 9.0 2450970 1998-06-05 2451033 1998-08-07 -63 SVO
38 9.1 2451284 1999-04-15 2451346 1999-06-16 -62 SVO
39 8.8 2451601 2000-02-26 2451660 2000-04-25 -59 SVO
40 9.4 2451917 2001-01-07 2451974 2001-03-05 -57 SVO
41 9.4 2452235 2001-11-21 2452288 2002-01-13 -53 SVO
42 8.8 2452550 2002-10-02 2452602 2002-11-23 -52 SVO
43 9.1 2452873 2003-08-21 2452916 2003-10-03 -43 SVO
44 9.3 2453188 2004-07-01 2453230 2004-08-12 -42 SVO
45   2453500 2005-05-09 2453544 2005-06-22 -44 SVO
46   2453820 2006-03-25 2453857 2006-05-01 -37 SVO
47 9.1 2454136 2007-02-04 2454171 2007-03-11 -35 SVO
48 9.1 2454449 2007-12-14 2454485 2008-01-19 -36 SVO
49 9.6 2454765 2008-10-25 2454799 2008-11-28 -34 SVO
50 8.8 2455075 2009-08-31 2455113 2009-10-08 -38 SVO
51 9.3 2455389 2010-07-11 2455427 2010-08-18 -38 SVO
52 9.6 2455711 2011-05-29 2455741 2011-06-28 -30 SVO
53 8.8 2456024 2012-04-06 2456055 2012-05-07 -31 SVO
54 9.1 2456343 2013-02-19 2456369 2013-03-17 -26 SVO
56 9.5 2456979 2014-11-17 2456996 2014-12-04 -17 SVO
57 9.6 2457297 2015-10-01 2457310 2015-10-14 -13 SVO
58 9.2 2457627 2016-08-26 2457624 2016-08-23 3 SVO
59 9.4 2457934 2017-06-29 2457938 2017-07-03 -4 SVO
60 8.3 2458239 2018-04-30 2458252 2018-05-13 -13 SVO
61 9.0 2458560 2019-03-17 2458566 2019-03-23 -6 SVO
62 9.0 2458880 2020-01-31 2458880 2020-01-31 0 SVO
63 9.6 2459202 2020-12-18 2459193 2020-12-09 9 SVO
64 8.8 2459520 2021-11-01 2459507 2021-10-19 13 SVO
65 9.4 2459836 2022-09-13 2459821 2022-08-29 15 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.