Maxima for X Del
Period: 281.48, Epoch: 2441559.6
AAVSO offset: 0

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-100   2413439 1895-09-02 2413411 1895-08-05 28 AnHar, 1909, vol 55, p 95
-99   2413717 1896-06-06 2413693 1896-05-13 24 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-97   2414303 1898-01-13 2414256 1897-11-27 47 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-96   2414570 1898-10-07 2414537 1898-09-04 33 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-95   2414830 1899-06-24 2414819 1899-06-13 11 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-94   2415135 1900-04-25 2415100 1900-03-21 35 GuL, 1920, 1.2
-92   2415680 1901-10-22 2415663 1901-10-05 17 AnHar, 1952, vol 118
-91   2415954 1902-07-23 2415945 1902-07-14 9 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-88   2416803 1904-11-18 2416789 1904-11-04 14 AAVSO
-87   2417094 1905-09-05 2417071 1905-08-13 23 AAVSO
-86   2417368 1906-06-06 2417352 1906-05-21 16 AAVSO
-84   2417942 1908-01-01 2417915 1907-12-05 27 AAVSO
-83 9.0 2418204 1908-09-19 2418196 1908-09-11 8 SVO
-82 8.8 2418500 1909-07-12 2418478 1909-06-20 22 AAVSO
-80   2419038 1911-01-01 2419041 1911-01-04 -3 AAVSO
-79 8.8 2419318 1911-10-08 2419322 1911-10-12 -4 AAVSO
-78   2419600 1912-07-16 2419604 1912-07-20 -4 AnHar, 1952, vol 118
-75 8.4 2420453 1914-11-16 2420448 1914-11-11 5 AAVSO
-74 8.8 2420722 1915-08-12 2420730 1915-08-20 -8 AAVSO
-73 9.0 2421006 1916-05-22 2421011 1916-05-27 -5 AAVSO
-72   2421293 1917-03-05 2421293 1917-03-05 0 AAVSO
-71 8.8 2421574 1917-12-11 2421574 1917-12-11 0 AAVSO
-70 9.4 2421866 1918-09-29 2421856 1918-09-19 10 AAVSO
-69 8.7 2422147 1919-07-07 2422137 1919-06-27 10 AAVSO
-68   2422438 1920-04-23 2422419 1920-04-04 19 AAVSO
-67   2422710 1921-01-20 2422700 1921-01-10 10 AAVSO
-66 8.7 2422986 1921-10-23 2422982 1921-10-19 4 SVO
-65 8.7 2423262 1922-07-26 2423263 1922-07-27 -1 SVO
-64 8.6 2423544 1923-05-04 2423545 1923-05-05 -1 SVO
-63 9.0 2423836 1924-02-20 2423826 1924-02-10 10 SVO
-62 8.5 2424103 1924-11-13 2424108 1924-11-18 -5 SVO
-61 8.6 2424386 1925-08-23 2424389 1925-08-26 -3 SVO
-60 9.4 2424665 1926-05-29 2424671 1926-06-04 -6 SVO
-59 8.6 2424935 1927-02-23 2424952 1927-03-12 -17 SVO
-58 9.6 2425227 1927-12-12 2425234 1927-12-19 -7 SVO
-57 9.2 2425499 1928-09-09 2425515 1928-09-25 -16 SVO
-56 9.2 2425780 1929-06-17 2425796 1929-07-03 -16 SVO
-55 9.0 2426063 1930-03-27 2426078 1930-04-11 -15 SVO
-54 8.7 2426332 1930-12-21 2426359 1931-01-17 -27 SVO
-53 9.1 2426610 1931-09-25 2426641 1931-10-26 -31 SVO
-52 9.5 2426900 1932-07-11 2426922 1932-08-02 -22 SVO
-51 9.0 2427184 1933-04-21 2427204 1933-05-11 -20 SVO
-50 8.5 2427464 1934-01-26 2427485 1934-02-16 -21 SVO
-49 8.5 2427744 1934-11-02 2427767 1934-11-25 -23 SVO
-48 9.2 2428029 1935-08-14 2428048 1935-09-02 -19 SVO
-47 8.9 2428314 1936-05-25 2428330 1936-06-10 -16 SVO
-46 9.0 2428595 1937-03-02 2428611 1937-03-18 -16 SVO
-45 8.5 2428881 1937-12-13 2428893 1937-12-25 -12 AAVSO
-44 9.0 2429167 1938-09-25 2429174 1938-10-02 -7 SVO
-43 9.3 2429453 1939-07-08 2429456 1939-07-11 -3 SVO
-42 8.5 2429736 1940-04-16 2429737 1940-04-17 -1 AAVSO
-41 8.8 2430016 1941-01-21 2430019 1941-01-24 -3 AAVSO
-40 9.1 2430299 1941-10-31 2430300 1941-11-01 -1 SVO
-39 9.0 2430585 1942-08-13 2430582 1942-08-10 3 SVO
-38 8.5 2430868 1943-05-23 2430863 1943-05-18 5 AAVSO
-37   2431146 1944-02-25 2431145 1944-02-24 1 AAVSO
-36 9.2 2431429 1944-12-04 2431426 1944-12-01 3 AAVSO
-35 9.3 2431713 1945-09-14 2431708 1945-09-09 5 SVO
-34 8.9 2431992 1946-06-20 2431989 1946-06-17 3 AAVSO
-33   2432279 1947-04-03 2432271 1947-03-26 8 AAVSO
-32 9.4 2432560 1948-01-09 2432552 1948-01-01 8 AAVSO
-31 9.1 2432832 1948-10-07 2432834 1948-10-09 -2 SVO
-30 8.6 2433107 1949-07-09 2433115 1949-07-17 -8 SVO
-29   2433390 1950-04-18 2433397 1950-04-25 -7 AAVSO
-28   2433671 1951-01-24 2433678 1951-01-31 -7 AAVSO
-27 9.6 2433965 1951-11-14 2433960 1951-11-09 5 AAVSO
-26 9.5 2434251 1952-08-26 2434241 1952-08-16 10 SVO
-25 9.2 2434535 1953-06-06 2434522 1953-05-24 13 AAVSO
-24   2434810 1954-03-08 2434804 1954-03-02 6 AAVSO
-23 8.9 2435080 1954-12-03 2435085 1954-12-08 -5 AAVSO
-22 8.7 2435362 1955-09-11 2435367 1955-09-16 -5 SVO
-21 8.8 2435641 1956-06-16 2435648 1956-06-23 -7 AAVSO
-20 9.4 2435925 1957-03-27 2435930 1957-04-01 -5 AAVSO
-19 9.1 2436202 1957-12-29 2436211 1958-01-07 -9 AAVSO
-18 8.7 2436485 1958-10-08 2436493 1958-10-16 -8 SVO
-17 9.6 2436767 1959-07-17 2436774 1959-07-24 -7 SVO
-16 8.9 2437051 1960-04-26 2437056 1960-05-01 -5 AAVSO
-15   2437333 1961-02-02 2437337 1961-02-06 -4 AAVSO
-14 9.2 2437606 1961-11-02 2437619 1961-11-15 -13 SVO
-13 9.2 2437895 1962-08-18 2437900 1962-08-23 -5 SVO
-12 9.4 2438178 1963-05-28 2438182 1963-06-01 -4 AAVSO
-11   2438452 1964-02-26 2438463 1964-03-08 -11 AAVSO
-10 9.1 2438730 1964-11-30 2438745 1964-12-15 -15 AAVSO
-9 8.9 2439011 1965-09-07 2439026 1965-09-22 -15 SVO
-8 8.8 2439293 1966-06-16 2439308 1966-07-01 -15 SVO
-7 9.6 2439570 1967-03-20 2439589 1967-04-08 -19 AAVSO
-6 9.0 2439852 1967-12-27 2439871 1968-01-15 -19 AAVSO
-5 8.8 2440134 1968-10-04 2440152 1968-10-22 -18 SVO
-4 8.8 2440418 1969-07-15 2440434 1969-07-31 -16 SVO
-3 9.4 2440696 1970-04-19 2440715 1970-05-08 -19 AAVSO
-2 9.2 2440980 1971-01-28 2440997 1971-02-14 -17 AAVSO
-1 9.3 2441272 1971-11-16 2441278 1971-11-22 -6 SVO
0 9.0 2441553 1972-08-23 2441560 1972-08-30 -7 SVO
1 9.2 2441841 1973-06-07 2441841 1973-06-07 0 SVO
2 9.1 2442119 1974-03-12 2442123 1974-03-16 -4 AAVSO
3 9.0 2442401 1974-12-19 2442404 1974-12-22 -3 SVO
4 9.2 2442686 1975-09-30 2442686 1975-09-30 0 SVO
5 9.1 2442971 1976-07-11 2442967 1976-07-07 4 SVO
6 9.1 2443246 1977-04-12 2443248 1977-04-14 -2 AAVSO
7 9.0 2443537 1978-01-28 2443530 1978-01-21 7 SVO
8 9.7 2443822 1978-11-09 2443811 1978-10-29 11 SVO
9 9.2 2444093 1979-08-07 2444093 1979-08-07 0 SVO
10 9.3 2444378 1980-05-18 2444374 1980-05-14 4 SVO
11 9.4 2444662 1981-02-26 2444656 1981-02-20 6 AAVSO
12 9.1 2444933 1981-11-24 2444937 1981-11-28 -4 SVO
13 8.6 2445208 1982-08-26 2445219 1982-09-06 -11 SVO
14 10.6 2445489 1983-06-03 2445500 1983-06-14 -11 AAVSO
15 9.5 2445767 1984-03-07 2445782 1984-03-22 -15 AAVSO
16 9.5 2446052 1984-12-17 2446063 1984-12-28 -11 AAVSO
17 9.7 2446332 1985-09-23 2446345 1985-10-06 -13 SVO
18 9.1 2446608 1986-06-26 2446626 1986-07-14 -18 SVO
19 9.3 2446880 1987-03-25 2446908 1987-04-22 -28 SVO
20 9.2 2447159 1987-12-29 2447189 1988-01-28 -30 SVO
21 9.2 2447445 1988-10-10 2447471 1988-11-05 -26 SVO
22 9.2 2447731 1989-07-23 2447752 1989-08-13 -21 SVO
23 8.9 2448005 1990-04-23 2448034 1990-05-22 -29 SVO
24 9.4 2448297 1991-02-09 2448315 1991-02-27 -18 SVO
25 9.5 2448578 1991-11-17 2448597 1991-12-06 -19 SVO
26 9.0 2448861 1992-08-26 2448878 1992-09-12 -17 SVO
27 9.3 2449143 1993-06-04 2449160 1993-06-21 -17 SVO
28 10.1 2449432 1994-03-20 2449441 1994-03-29 -9 SVO
29 9.0 2449708 1994-12-21 2449723 1995-01-05 -15 SVO
30 9.9 2449998 1995-10-07 2450004 1995-10-13 -6 SVO
31 9.0 2450278 1996-07-13 2450286 1996-07-21 -8 SVO
32 9.6 2450562 1997-04-23 2450567 1997-04-28 -5 SVO
33 9.0 2450842 1998-01-28 2450849 1998-02-04 -7 SVO
34 8.9 2451125 1998-11-07 2451130 1998-11-12 -5 SVO
35 9.2 2451413 1999-08-22 2451411 1999-08-20 2 SVO
36 9.4 2451697 2000-06-01 2451693 2000-05-28 4 SVO
37 8.8 2451987 2001-03-18 2451974 2001-03-05 13 SVO
38 10.1 2452269 2001-12-25 2452256 2001-12-12 13 SVO
39 9.5 2452556 2002-10-08 2452537 2002-09-19 19 SVO
40 9.3 2452839 2003-07-18 2452819 2003-06-28 20 SVO
41 9.1 2453119 2004-04-23 2453100 2004-04-04 19 SVO
42 9.4 2453403 2005-02-01 2453382 2005-01-11 21 SVO
43 8.8 2453680 2005-11-05 2453663 2005-10-19 17 SVO
44 9.3 2453963 2006-08-15 2453945 2006-07-28 18 SVO
45 9.0 2454255 2007-06-03 2454226 2007-05-05 29 SVO
46 9.4 2454544 2008-03-18 2454508 2008-02-11 36 SVO
47 9.3 2454818 2008-12-17 2454789 2008-11-18 29 SVO
48 8.5 2455103 2009-09-28 2455071 2009-08-27 32 SVO
49 10.0 2455385 2010-07-07 2455352 2010-06-04 33 SVO
50 9.2 2455668 2011-04-16 2455634 2011-03-13 34 SVO
51 9.0 2455945 2012-01-18 2455915 2011-12-19 30 SVO
52 9.0 2456227 2012-10-26 2456197 2012-09-26 30 SVO
53 8.6 2456507 2013-08-02 2456478 2013-07-04 29 SVO
54 9.7 2456785 2014-05-07 2456760 2014-04-12 25 SVO
55 8.9 2457057 2015-02-03 2457041 2015-01-18 16 SVO
56 9.7 2457348 2015-11-21 2457323 2015-10-27 25 SVO
57 9.7 2457627 2016-08-26 2457604 2016-08-03 23 SVO
58 8.4 2457885 2017-05-11 2457886 2017-05-12 -1 SVO
59 9.8 2458164 2018-02-14 2458167 2018-02-17 -3 SVO
60 9.3 2458451 2018-11-28 2458449 2018-11-26 2 SVO
61 9.4 2458732 2019-09-05 2458730 2019-09-03 2 SVO
62 8.9 2459009 2020-06-08 2459012 2020-06-11 -3 SVO
63 8.6 2459276 2021-03-02 2459293 2021-03-19 -17 SVO
64 9.0 2459566 2021-12-17 2459575 2021-12-26 -9 SVO
65 9.0 2459845 2022-09-22 2459856 2022-10-03 -11 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.