Maxima for Y Cep
Period: 332.57, Epoch: 2444134
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-87   2415200 1900-06-29 2415200 1900-06-29 0 GuL, 1918, 1.1
-86 9.5 2415543 1901-06-07 2415533 1901-05-28 10 AAVSO
-85 9.2 2415866 1902-04-26 2415866 1902-04-26 0 AAVSO
-82   2416886 1905-02-09 2416863 1905-01-17 23 AnHar, 1909, vol 55, p 95, GuL, 1918, 1.1
-81   2417222 1906-01-11 2417196 1905-12-16 26 AnHar, 1909, vol 55, p 95, GuL, 1918, 1.1
-80   2417541 1906-11-26 2417528 1906-11-13 13 AnHar, 1909, vol 55, p 95
-79   2417865 1907-10-16 2417861 1907-10-12 4 AnHar, 1909, vol 55, p 95
-78 9.0 2418215 1908-09-30 2418194 1908-09-09 21 AAVSO
-77 10.0 2418545 1909-08-26 2418526 1909-08-07 19 AAVSO
-76   2418865 1910-07-12 2418859 1910-07-06 6 AAVSO
-75   2419199 1911-06-11 2419191 1911-06-03 8 AAVSO
-74 8.8 2419519 1912-04-26 2419524 1912-05-01 -5 SVO
-73 9.5 2419849 1913-03-22 2419856 1913-03-29 -7 SVO
-72 9.8 2420177 1914-02-13 2420189 1914-02-25 -12 SVO
-71 9.7 2420516 1915-01-18 2420522 1915-01-24 -6 AAVSO
-70 9.6 2420850 1915-12-18 2420854 1915-12-22 -4 AAVSO
-69 9.2 2421178 1916-11-10 2421187 1916-11-19 -9 SVO
-68 9.7 2421507 1917-10-05 2421519 1917-10-17 -12 SVO
-67 9.1 2421837 1918-08-31 2421852 1918-09-15 -15 SVO
-66 10.2 2422165 1919-07-25 2422184 1919-08-13 -19 AAVSO
-65 9.4 2422496 1920-06-20 2422517 1920-07-11 -21 AAVSO
-64   2422829 1921-05-19 2422850 1921-06-09 -21 AAVSO
-63 9.8 2423159 1922-04-14 2423182 1922-05-07 -23 SVO
-62 8.6 2423490 1923-03-11 2423515 1923-04-05 -25 SVO
-61 10.6 2423825 1924-02-09 2423847 1924-03-02 -22 SVO
-60 10.1 2424157 1925-01-06 2424180 1925-01-29 -23 SVO
-59 9.3 2424485 1925-11-30 2424512 1925-12-27 -27 SVO
-58 10.1 2424816 1926-10-27 2424845 1926-11-25 -29 SVO
-57 10.0 2425153 1927-09-29 2425178 1927-10-24 -25 SVO
-56 9.3 2425487 1928-08-28 2425510 1928-09-20 -23 SVO
-55 9.3 2425821 1929-07-28 2425843 1929-08-19 -22 SVO
-54 9.7 2426160 1930-07-02 2426175 1930-07-17 -15 SVO
-53 9.0 2426484 1931-05-22 2426508 1931-06-15 -24 SVO
-52 10.6 2426823 1932-04-25 2426840 1932-05-12 -17 AAVSO
-51 9.5 2427150 1933-03-18 2427173 1933-04-10 -23 SVO
-50 9.7 2427490 1934-02-21 2427506 1934-03-09 -16 SVO
-49 9.1 2427824 1935-01-21 2427838 1935-02-04 -14 SVO
-48 10.2 2428155 1935-12-18 2428171 1936-01-03 -16 SVO
-47 9.4 2428493 1936-11-20 2428503 1936-11-30 -10 SVO
-46 9.6 2428820 1937-10-13 2428836 1937-10-29 -16 SVO
-45 9.3 2429162 1938-09-20 2429168 1938-09-26 -6 SVO
-44 9.3 2429494 1939-08-18 2429501 1939-08-25 -7 SVO
-43 9.5 2429822 1940-07-11 2429833 1940-07-22 -11 AAVSO
-42   2430154 1941-06-08 2430166 1941-06-20 -12 AAVSO
-41 9.5 2430492 1942-05-12 2430499 1942-05-19 -7 AAVSO
-40 9.7 2430843 1943-04-28 2430831 1943-04-16 12 SVO
-39 9.2 2431168 1944-03-18 2431164 1944-03-14 4 SVO
-38 9.0 2431510 1945-02-23 2431496 1945-02-09 14 AAVSO
-37 9.2 2431839 1946-01-18 2431829 1946-01-08 10 SVO
-36 9.9 2432171 1946-12-16 2432161 1946-12-06 10 SVO
-35 8.9 2432490 1947-10-31 2432494 1947-11-04 -4 SVO
-34 9.9 2432826 1948-10-01 2432827 1948-10-02 -1 SVO
-33 9.1 2433170 1949-09-10 2433159 1949-08-30 11 SVO
-32 10.0 2433499 1950-08-05 2433492 1950-07-29 7 SVO
-31 9.3 2433819 1951-06-21 2433824 1951-06-26 -5 AAVSO
-30 10.0 2434161 1952-05-28 2434157 1952-05-24 4 AAVSO
-29 9.2 2434498 1953-04-30 2434489 1953-04-21 9 SVO
-28 9.0 2434834 1954-04-01 2434822 1954-03-20 12 AAVSO
-27 9.6 2435157 1955-02-18 2435155 1955-02-16 2 SVO
-26 9.1 2435494 1956-01-21 2435487 1956-01-14 7 SVO
-25 10.5 2435827 1956-12-19 2435820 1956-12-12 7 SVO
-24 9.7 2436162 1957-11-19 2436152 1957-11-09 10 SVO
-23 9.5 2436487 1958-10-10 2436485 1958-10-08 2 SVO
-22 9.5 2436824 1959-09-12 2436817 1959-09-05 7 SVO
-21 9.3 2437163 1960-08-16 2437150 1960-08-03 13 SVO
-20 10.5 2437497 1961-07-16 2437483 1961-07-02 14 AAVSO
-19 9.6 2437824 1962-06-08 2437815 1962-05-30 9 AAVSO
-18 9.6 2438156 1963-05-06 2438148 1963-04-28 8 AAVSO
-17 9.4 2438484 1964-03-29 2438480 1964-03-25 4 SVO
-16 10.1 2438818 1965-02-26 2438813 1965-02-21 5 SVO
-15 8.8 2439147 1966-01-21 2439145 1966-01-19 2 SVO
-14 9.5 2439462 1966-12-02 2439478 1966-12-18 -16 SVO
-13 9.6 2439813 1967-11-18 2439811 1967-11-16 2 SVO
-12 10.1 2440148 1968-10-18 2440143 1968-10-13 5 SVO
-11 9.2 2440471 1969-09-06 2440476 1969-09-11 -5 SVO
-10 9.0 2440801 1970-08-02 2440808 1970-08-09 -7 SVO
-9 9.6 2441143 1971-07-10 2441141 1971-07-08 2 SVO
-8 9.9 2441475 1972-06-06 2441473 1972-06-04 2 SVO
-7 9.4 2441803 1973-04-30 2441806 1973-05-03 -3 SVO
-6 9.3 2442135 1974-03-28 2442139 1974-04-01 -4 SVO
-5 10.0 2442475 1975-03-03 2442471 1975-02-27 4 SVO
-4 9.4 2442800 1976-01-22 2442804 1976-01-26 -4 SVO
-3 9.2 2443131 1976-12-18 2443136 1976-12-23 -5 SVO
-2 10.3 2443467 1977-11-19 2443469 1977-11-21 -2 SVO
-1 9.6 2443799 1978-10-17 2443801 1978-10-19 -2 SVO
0 9.7 2444134 1979-09-17 2444134 1979-09-17 0 SVO
1 9.9 2444467 1980-08-15 2444467 1980-08-15 0 SVO
2 9.3 2444796 1981-07-10 2444799 1981-07-13 -3 SVO
3 9.4 2445125 1982-06-04 2445132 1982-06-11 -7 SVO
4 9.8 2445463 1983-05-08 2445464 1983-05-09 -1 SVO
5 9.4 2445795 1984-04-04 2445797 1984-04-06 -2 SVO
6 9.0 2446120 1985-02-23 2446129 1985-03-04 -9 SVO
7 10.7 2446464 1986-02-02 2446462 1986-01-31 2 SVO
8 9.4 2446785 1986-12-20 2446795 1986-12-30 -10 SVO
9 9.1 2447122 1987-11-22 2447127 1987-11-27 -5 SVO
10 10.3 2447455 1988-10-20 2447460 1988-10-25 -5 SVO
11 9.7 2447792 1989-09-22 2447792 1989-09-22 0 SVO
12 9.5 2448119 1990-08-15 2448125 1990-08-21 -6 SVO
13 9.0 2448449 1991-07-11 2448457 1991-07-19 -8 SVO
14 9.7 2448791 1992-06-17 2448790 1992-06-16 1 SVO
15 9.6 2449128 1993-05-20 2449123 1993-05-15 5 SVO
16 9.6 2449456 1994-04-13 2449455 1994-04-12 1 SVO
17 9.1 2449776 1995-02-27 2449788 1995-03-11 -12 SVO
18 10.0 2450109 1996-01-26 2450120 1996-02-06 -11 SVO
19 9.7 2450453 1997-01-04 2450453 1997-01-04 0 SVO
20 10.0 2450789 1997-12-06 2450785 1997-12-02 4 SVO
21 10.0 2451116 1998-10-29 2451118 1998-10-31 -2 SVO
22 8.6 2451436 1999-09-14 2451451 1999-09-29 -15 SVO
23 9.8 2451784 2000-08-27 2451783 2000-08-26 1 SVO
24 9.8 2452117 2001-07-26 2452116 2001-07-25 1 SVO
25 9.3 2452446 2002-06-20 2452448 2002-06-22 -2 SVO
26 10.1 2452781 2003-05-21 2452781 2003-05-21 0 SVO
27 9.1 2453114 2004-04-18 2453113 2004-04-17 1 SVO
28 9.6 2453450 2005-03-20 2453446 2005-03-16 4 SVO
29 9.4 2453777 2006-02-10 2453779 2006-02-12 -2 SVO
30 9.1 2454106 2007-01-05 2454111 2007-01-10 -5 SVO
31 9.5 2454445 2007-12-10 2454444 2007-12-09 1 SVO
32 9.2 2454777 2008-11-06 2454776 2008-11-05 1 SVO
33 9.7 2455115 2009-10-10 2455109 2009-10-04 6 SVO
34 9.2 2455444 2010-09-04 2455441 2010-09-01 3 SVO
35 9.9 2455781 2011-08-07 2455774 2011-07-31 7 SVO
36 9.3 2456120 2012-07-11 2456107 2012-06-28 13 SVO
37 10.1 2456448 2013-06-04 2456439 2013-05-26 9 SVO
38 9.1 2456781 2014-05-03 2456772 2014-04-24 9 SVO
39 10.5 2457129 2015-04-16 2457104 2015-03-22 25 SVO
40 10.2 2457465 2016-03-17 2457437 2016-02-18 28 AAVSO
41 8.7 2457787 2017-02-02 2457769 2017-01-15 18 SVO
42 10.1 2458128 2018-01-09 2458102 2017-12-14 26 SVO
43 9.4 2458463 2018-12-10 2458435 2018-11-12 28 SVO
44 9.8 2458801 2019-11-13 2458767 2019-10-10 34 SVO
45 9.0 2459130 2020-10-07 2459100 2020-09-07 30 SVO
46 9.7 2459461 2021-09-03 2459432 2021-08-05 29 SVO
47 9.8 2459789 2022-07-28 2459765 2022-07-04 24 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.