Maxima for DR Cyg
Period: 314.8, Epoch: 2455389
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-136   2412735 1893-09-28 2412576 1893-04-22 159 SVO
-129   2414934 1899-10-06 2414780 1899-05-05 154 PZ, 1949, vol 7, p 151, AnHar, 1952, vol 118
-127   2415580 1901-07-14 2415409 1901-01-24 171 SVO
-126   2415892 1902-05-22 2415724 1901-12-05 168 AnHar, 1952, vol 118
-125   2416180 1903-03-06 2416039 1902-10-16 141 AnHar, 1952, vol 118
-124   2416515 1904-02-04 2416354 1903-08-27 161 AnHar, 1952, vol 118
-123   2416835 1904-12-20 2416669 1904-07-07 166 SVO
-122   2417145 1905-10-26 2416983 1905-05-17 162 SVO
-121   2417465 1906-09-11 2417298 1906-03-28 167 PZ, 1949, vol 7, p 151
-119   2418104 1908-06-11 2417928 1907-12-18 176 AnHar, 1952, vol 118
-115   2419364 1911-11-23 2419187 1911-05-30 177 AnHar, 1952, vol 118
-114   2419673 1912-09-27 2419502 1912-04-09 171 AnHar, 1952, vol 118
-113   2419990 1913-08-10 2419817 1913-02-18 173 SVO
-111   2420602 1915-04-14 2420446 1914-11-09 156 AnHar, 1952, vol 118
-109   2421228 1916-12-30 2421076 1916-07-31 152 AnHar, 1952, vol 118
-108   2421550 1917-11-17 2421391 1917-06-11 159 SVO
-107   2421860 1918-09-23 2421705 1918-04-21 155 SVO
-106   2422170 1919-07-30 2422020 1919-03-02 150 SVO
-104   2422810 1921-04-30 2422650 1920-11-21 160 SVO
-101   2423745 1923-11-21 2423594 1923-06-23 151 SVO
-100   2424060 1924-10-01 2423909 1924-05-03 151 SVO
-99   2424362 1925-07-30 2424224 1925-03-14 138 AnHar, 1952, vol 118
-98   2424680 1926-06-13 2424539 1926-01-23 141 SVO
-97   2424995 1927-04-24 2424853 1926-12-03 142 AnHar, 1952, vol 118
-95   2425648 1929-02-05 2425483 1928-08-24 165 PZ, 1949, vol 7, p 151
-94   2425972 1929-12-26 2425798 1929-07-05 174 PZ, 1949, vol 7, p 151
-93   2426300 1930-11-19 2426113 1930-05-16 187 SVO
-92   2426616 1931-10-01 2426427 1931-03-26 189 PZ, 1949, vol 7, p 151
-91   2426925 1932-08-05 2426742 1932-02-04 183 AnHar, 1952, vol 118, PZ, 1949, vol 7, p 151
-90   2427250 1933-06-26 2427057 1932-12-15 193 SVO
-89   2427570 1934-05-12 2427372 1933-10-26 198 SVO
-86   2428508 1936-12-05 2428316 1936-05-27 192 AnHar, 1952, vol 118, PZ, 1949, vol 7, p 151
-85   2428796 1937-09-19 2428631 1937-04-07 165 PZ, 1949, vol 7, p 151
-84   2429110 1938-07-30 2428946 1938-02-16 164 SVO
-83   2429415 1939-05-31 2429261 1938-12-28 154 PZ, 1949, vol 7, p 151
-80   2430350 1941-12-21 2430205 1941-07-29 145 SVO
-79   2430670 1942-11-06 2430520 1942-06-09 150 SVO
-78   2430965 1943-08-28 2430835 1943-04-20 130 SVO
-77   2431277 1944-07-05 2431149 1944-02-28 128 SVO
-76   2431610 1945-06-03 2431464 1945-01-08 146 SVO
-70   2433460 1950-06-27 2433353 1950-03-12 107 SVO
-66   2434708 1953-11-26 2434612 1953-08-22 96 MitVS, 1984, vol 10, p 116
-65   2435019 1954-10-03 2434927 1954-07-03 92 MitVS, 1984, vol 10, p 116
-64   2435331 1955-08-11 2435242 1955-05-14 89 MitVS, 1984, vol 10, p 116
-63   2435700 1956-08-14 2435557 1956-03-24 143 MitVS, 1984, vol 10, p 116
-62   2435972 1957-05-13 2435871 1957-02-01 101 MitVS, 1984, vol 10, p 116
-59   2436900 1959-11-27 2436816 1959-09-04 84 MitVS, 1984, vol 10, p 116
-58   2437194 1960-09-16 2437131 1960-07-15 63 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
-57   2437516 1961-08-04 2437445 1961-05-25 71 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
-56   2437841 1962-06-25 2437760 1962-04-05 81 MitVS, 1967, vol 4, p 150, MitVS, 1984, vol 10, p 116
-55   2438166 1963-05-16 2438075 1963-02-14 91 MitVS, 1967, vol 4, p 150, MitVS, 1984, vol 10, p 116
-54   2438466 1964-03-11 2438390 1963-12-26 76 MitVS, 1984, vol 10, p 116
-53   2438760 1964-12-30 2438705 1964-11-05 55 MitVS, 1984, vol 10, p 116
-52   2439107 1965-12-12 2439019 1965-09-15 88 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
-51   2439418 1966-10-19 2439334 1966-07-27 84 MitVS, 1984, vol 10, p 116, MitVS, 1967, vol 4, p 150
-50   2439730 1967-08-27 2439649 1967-06-07 81 MitVS, 1984, vol 10, p 116
-49   2440048 1968-07-10 2439964 1968-04-17 84 MitVS, 1984, vol 10, p 116
-48   2440355 1969-05-13 2440279 1969-02-26 76 MitVS, 1984, vol 10, p 116
-45   2441300 1971-12-14 2441223 1971-09-28 77 MitVS, 1984, vol 10, p 116
-44   2441620 1972-10-29 2441538 1972-08-08 82 MitVS, 1984, vol 10, p 116
-43   2441922 1973-08-27 2441853 1973-06-19 69 MitVS, 1984, vol 10, p 116
-42   2442228 1974-06-29 2442167 1974-04-29 61 MitVS, 1984, vol 10, p 116
-41   2442550 1975-05-17 2442482 1975-03-10 68 SVO
-40   2442870 1976-04-01 2442797 1976-01-19 73 MitVS, 1984, vol 10, p 116
-38   2443477 1977-11-29 2443427 1977-10-10 50 MitVS, 1984, vol 10, p 116
-37   2443790 1978-10-08 2443741 1978-08-20 49 MitVS, 1984, vol 10, p 116
-36   2444108 1979-08-22 2444056 1979-07-01 52 MitVS, 1984, vol 10, p 116
-35   2444410 1980-06-19 2444371 1980-05-11 39 MitVS, 1984, vol 10, p 116
-34   2444732 1981-05-07 2444686 1981-03-22 46 MitVS, 1984, vol 10, p 116
-32   2445360 1983-01-25 2445315 1982-12-11 45 SVO
-31   2445665 1983-11-26 2445630 1983-10-22 35 SVO
-30 8.9 2445985 1984-10-11 2445945 1984-09-01 40 SVO
-29 10.1 2446296 1985-08-18 2446260 1985-07-13 36 SVO
-28   2446612 1986-06-30 2446575 1986-05-24 37 AFOEV
-27   2446910 1987-04-24 2446889 1987-04-03 21 SVO
-25 9.0 2447536 1989-01-09 2447519 1988-12-23 17 SVO
-24 8.7 2447845 1989-11-14 2447834 1989-11-03 11 SVO
-23 9.2 2448155 1990-09-20 2448149 1990-09-14 6 SVO
-22 9.0 2448475 1991-08-06 2448463 1991-07-25 12 SVO
-21   2448790 1992-06-16 2448778 1992-06-04 12 SVO
-20   2449110 1993-05-02 2449093 1993-04-15 17 AFOEV
-19 8.9 2449409 1994-02-25 2449408 1994-02-24 1 SVO
-18 10.0 2449727 1995-01-09 2449723 1995-01-05 4 SVO
-17 9.4 2450044 1995-11-22 2450037 1995-11-15 7 SVO
-16 8.9 2450350 1996-09-23 2450352 1996-09-25 -2 SVO
-15 9.3 2450658 1997-07-28 2450667 1997-08-06 -9 SVO
-14 9.0 2450970 1998-06-05 2450982 1998-06-17 -12 SVO
-13 9.1 2451284 1999-04-15 2451297 1999-04-28 -13 SVO
-12 8.8 2451601 2000-02-26 2451611 2000-03-07 -10 SVO
-11 9.4 2451917 2001-01-07 2451926 2001-01-16 -9 SVO
-10 9.4 2452235 2001-11-21 2452241 2001-11-27 -6 SVO
-9 8.8 2452550 2002-10-02 2452556 2002-10-08 -6 SVO
-8 9.1 2452873 2003-08-21 2452871 2003-08-19 2 SVO
-7 9.3 2453188 2004-07-01 2453185 2004-06-28 3 SVO
-6   2453500 2005-05-09 2453500 2005-05-09 0 SVO
-5   2453820 2006-03-25 2453815 2006-03-20 5 SVO
-4 9.1 2454136 2007-02-04 2454130 2007-01-29 6 SVO
-3 9.1 2454449 2007-12-14 2454445 2007-12-10 4 SVO
-2 9.6 2454765 2008-10-25 2454759 2008-10-19 6 SVO
-1 8.8 2455075 2009-08-31 2455074 2009-08-30 1 SVO
0 9.3 2455389 2010-07-11 2455389 2010-07-11 0 SVO
1 9.6 2455711 2011-05-29 2455704 2011-05-22 7 SVO
2 8.8 2456024 2012-04-06 2456019 2012-04-01 5 SVO
3 9.1 2456343 2013-02-19 2456333 2013-02-09 10 SVO
5 9.5 2456979 2014-11-17 2456963 2014-11-01 16 SVO
6 9.6 2457297 2015-10-01 2457278 2015-09-12 19 SVO
7 9.2 2457627 2016-08-26 2457593 2016-07-23 34 SVO
8 9.4 2457934 2017-06-29 2457907 2017-06-02 27 SVO
9 8.3 2458239 2018-04-30 2458222 2018-04-13 17 SVO
10 9.0 2458560 2019-03-17 2458537 2019-02-22 23 SVO
11 9.0 2458880 2020-01-31 2458852 2020-01-03 28 SVO
12 9.6 2459202 2020-12-18 2459167 2020-11-13 35 SVO
13 8.8 2459520 2021-11-01 2459481 2021-09-23 39 SVO
14 9.4 2459836 2022-09-13 2459796 2022-08-04 40 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.