Maxima for FF Cyg
Period: 323.82, Epoch: 2444456
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-101   2411740 1891-01-07 2411750 1891-01-17 -10 SVO
-100   2412070 1891-12-03 2412074 1891-12-07 -4 SVO
-99   2412380 1892-10-08 2412398 1892-10-26 -18 SVO
-97   2413050 1894-08-09 2413045 1894-08-04 5 SVO
-89   2415630 1901-09-02 2415636 1901-09-08 -6 SVO
-69   2422070 1919-04-21 2422112 1919-06-02 -42 SVO
-66   2423065 1922-01-10 2423084 1922-01-29 -19 SVO
-65   2423360 1922-11-01 2423408 1922-12-19 -48 SVO
-64   2423700 1923-10-07 2423732 1923-11-08 -32 SVO
-63   2424025 1924-08-27 2424055 1924-09-26 -30 SVO
-62   2424365 1925-08-02 2424379 1925-08-16 -14 SVO
-58   2425673 1929-03-02 2425674 1929-03-03 -1 KVeBB, 1941, vol 6, p 4, AN, 1929, vol 236, p 115
-55   2426660 1931-11-14 2426646 1931-10-31 14 SVO
-54   2426991 1932-10-10 2426970 1932-09-19 21 AN, 1936, vol 259, p 101
-53   2427315 1933-08-30 2427294 1933-08-09 21 AN, 1936, vol 259, p 101, KVeBB, 1941, vol 6, p 4
-52   2427635 1934-07-16 2427617 1934-06-28 18 AN, 1936, vol 259, p 101
-51 9.9 2427970 1935-06-16 2427941 1935-05-18 29 SVO
-46   2429590 1939-11-22 2429560 1939-10-23 30 SVO
-45   2429922 1940-10-19 2429884 1940-09-11 38 SVO
-44   2430230 1941-08-23 2430208 1941-08-01 22 SVO
-43   2430560 1942-07-19 2430532 1942-06-21 28 SVO
-36   2432825 1948-09-30 2432798 1948-09-03 27 SVO
-35   2433155 1949-08-26 2433122 1949-07-24 33 SVO
-34   2433488 1950-07-25 2433446 1950-06-13 42 SVO
-33   2433810 1951-06-12 2433770 1951-05-03 40 SVO
-18   2438664 1964-09-25 2438627 1964-08-19 37 MitVS, 1967, vol 4, p 150
-17   2438974 1965-08-01 2438951 1965-07-09 23 MitVS, 1967, vol 4, p 150
-16   2439313 1966-07-06 2439275 1966-05-29 38 MitVS, 1967, vol 4, p 150
-12   2440610 1970-01-23 2440570 1969-12-14 40 SVO
-11   2440920 1970-11-29 2440894 1970-11-03 26 SVO
-10 10.0 2441265 1971-11-09 2441218 1971-09-23 47 SVO
-9 9.5 2441557 1972-08-27 2441542 1972-08-12 15 SVO
-8 9.6 2441878 1973-07-14 2441865 1973-07-01 13 SVO
-7   2442190 1974-05-22 2442189 1974-05-21 1 SVO
-5   2442835 1976-02-26 2442837 1976-02-28 -2 SVO
-4   2443175 1977-01-31 2443161 1977-01-17 14 SVO
-3   2443475 1977-11-27 2443485 1977-12-07 -10 SVO
-2 9.4 2443818 1978-11-05 2443808 1978-10-26 10 SVO
-1 9.5 2444136 1979-09-19 2444132 1979-09-15 4 SVO
0 9.6 2444463 1980-08-11 2444456 1980-08-04 7 SVO
1 9.5 2444781 1981-06-25 2444780 1981-06-24 1 SVO
2 9.7 2445108 1982-05-18 2445104 1982-05-14 4 SVO
3 9.3 2445425 1983-03-31 2445427 1983-04-02 -2 SVO
4 9.5 2445751 1984-02-20 2445751 1984-02-20 0 SVO
5 9.4 2446077 1985-01-11 2446075 1985-01-09 2 SVO
6 9.6 2446408 1985-12-08 2446399 1985-11-29 9 SVO
7 9.5 2446725 1986-10-21 2446723 1986-10-19 2 SVO
8 9.5 2447061 1987-09-22 2447047 1987-09-08 14 SVO
9 9.6 2447391 1988-08-17 2447370 1988-07-27 21 SVO
10 9.7 2447711 1989-07-03 2447694 1989-06-16 17 SVO
11 9.8 2448032 1990-05-20 2448018 1990-05-06 14 SVO
12   2448360 1991-04-13 2448342 1991-03-26 18 SVO
13   2448675 1992-02-22 2448666 1992-02-13 9 SVO
14 9.7 2449004 1993-01-16 2448989 1993-01-01 15 SVO
15 9.9 2449348 1993-12-26 2449313 1993-11-21 35 SVO
16 9.6 2449668 1994-11-11 2449637 1994-10-11 31 SVO
17 9.6 2449989 1995-09-28 2449961 1995-08-31 28 SVO
18 9.7 2450313 1996-08-17 2450285 1996-07-20 28 SVO
19 9.7 2450642 1997-07-12 2450609 1997-06-09 33 SVO
20 9.6 2450971 1998-06-06 2450932 1998-04-28 39 SVO
21 9.7 2451302 1999-05-03 2451256 1999-03-18 46 SVO
22 10.0 2451641 2000-04-06 2451580 2000-02-05 61 SVO
23 9.6 2451941 2001-01-31 2451904 2000-12-25 37 SVO
24 9.6 2452270 2001-12-26 2452228 2001-11-14 42 SVO
25 9.6 2452600 2002-11-21 2452552 2002-10-04 48 SVO
26 9.8 2452937 2003-10-24 2452875 2003-08-23 62 SVO
27 9.6 2453245 2004-08-27 2453199 2004-07-12 46 SVO
28 9.7 2453581 2005-07-29 2453523 2005-06-01 58 SVO
29 9.7 2453905 2006-06-18 2453847 2006-04-21 58 SVO
30 9.7 2454232 2007-05-11 2454171 2007-03-11 61 SVO
31 9.7 2454561 2008-04-04 2454494 2008-01-28 67 SVO
32 9.9 2454901 2009-03-10 2454818 2008-12-17 83 SVO
33 9.4 2455211 2010-01-14 2455142 2009-11-06 69 SVO
34 9.6 2455547 2010-12-16 2455466 2010-09-26 81 SVO
35 9.5 2455864 2011-10-29 2455790 2011-08-16 74 SVO
36 9.8 2456193 2012-09-22 2456114 2012-07-05 79 SVO
37 9.9 2456523 2013-08-18 2456437 2013-05-24 86 SVO
38 9.6 2456852 2014-07-13 2456761 2014-04-13 91 SVO
39 9.5 2457165 2015-05-22 2457085 2015-03-03 80 SVO
40 9.6 2457499 2016-04-20 2457409 2016-01-21 90 SVO
41 9.7 2457823 2017-03-10 2457733 2016-12-10 90 SVO
42   2458150 2018-01-31 2458056 2017-10-29 94 SVO
43 9.8 2458476 2018-12-23 2458380 2018-09-18 96 SVO
44 9.7 2458785 2019-10-28 2458704 2019-08-08 81 SVO
45 9.5 2459121 2020-09-28 2459028 2020-06-27 93 SVO
46 9.9 2459451 2021-08-24 2459352 2021-05-17 99 SVO
47 9.4 2459767 2022-07-06 2459676 2022-04-06 91 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.