Maxima for X Del
Period: 282, Epoch: 2455100
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-153   2412050 1891-11-13 2411954 1891-08-09 96 SVO
-152   2412340 1892-08-29 2412236 1892-05-17 104 SVO
-148   2413439 1895-09-02 2413364 1895-06-19 75 AnHar, 1909, vol 55, p 95
-147   2413717 1896-06-06 2413646 1896-03-27 71 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-146   2414010 1897-03-26 2413928 1897-01-03 82 SVO
-145   2414303 1898-01-13 2414210 1897-10-12 93 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-144   2414570 1898-10-07 2414492 1898-07-21 78 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-143   2414840 1899-07-04 2414774 1899-04-29 66 SVO
-142   2415135 1900-04-25 2415056 1900-02-05 79 GuL, 1920, 1.2
-140   2415680 1901-10-22 2415620 1901-08-23 60 AnHar, 1952, vol 118
-139   2415965 1902-08-03 2415902 1902-06-01 63 SVO
-138   2416235 1903-04-30 2416184 1903-03-10 51 SVO
-136   2416803 1904-11-18 2416748 1904-09-24 55 AAVSO
-135   2417080 1905-08-22 2417030 1905-07-03 50 SVO
-134   2417368 1906-06-06 2417312 1906-04-11 56 AAVSO
-132   2417942 1908-01-01 2417876 1907-10-27 66 AAVSO
-131 9.0 2418204 1908-09-19 2418158 1908-08-04 46 SVO
-130   2418478 1909-06-20 2418440 1909-05-13 38 SVO
-128   2419038 1911-01-01 2419004 1910-11-28 34 AAVSO
-127 8.8 2419318 1911-10-08 2419286 1911-09-06 32 AAVSO
-126   2419600 1912-07-16 2419568 1912-06-14 32 AnHar, 1952, vol 118
-125   2419890 1913-05-02 2419850 1913-03-23 40 SVO
-123 8.4 2420453 1914-11-16 2420414 1914-10-08 39 AAVSO
-122 8.8 2420722 1915-08-12 2420696 1915-07-17 26 AAVSO
-121 9.0 2421006 1916-05-22 2420978 1916-04-24 28 AAVSO
-120   2421293 1917-03-05 2421260 1917-01-31 33 AAVSO
-119 8.8 2421574 1917-12-11 2421542 1917-11-09 32 AAVSO
-118 9.4 2421866 1918-09-29 2421824 1918-08-18 42 AAVSO
-117 8.7 2422147 1919-07-07 2422106 1919-05-27 41 AAVSO
-116   2422438 1920-04-23 2422388 1920-03-04 50 AAVSO
-115   2422710 1921-01-20 2422670 1920-12-11 40 AAVSO
-114 8.7 2422986 1921-10-23 2422952 1921-09-19 34 SVO
-113 8.7 2423262 1922-07-26 2423234 1922-06-28 28 SVO
-112 8.6 2423544 1923-05-04 2423516 1923-04-06 28 SVO
-111 9.0 2423836 1924-02-20 2423798 1924-01-13 38 SVO
-110 8.5 2424103 1924-11-13 2424080 1924-10-21 23 SVO
-109 8.6 2424386 1925-08-23 2424362 1925-07-30 24 SVO
-108 9.4 2424665 1926-05-29 2424644 1926-05-08 21 SVO
-107 8.6 2424935 1927-02-23 2424926 1927-02-14 9 SVO
-106 9.6 2425227 1927-12-12 2425208 1927-11-23 19 SVO
-105 9.2 2425499 1928-09-09 2425490 1928-08-31 9 SVO
-104 9.2 2425780 1929-06-17 2425772 1929-06-09 8 SVO
-103 9.0 2426063 1930-03-27 2426054 1930-03-18 9 SVO
-102 8.7 2426332 1930-12-21 2426336 1930-12-25 -4 SVO
-101 9.1 2426610 1931-09-25 2426618 1931-10-03 -8 SVO
-100 9.5 2426900 1932-07-11 2426900 1932-07-11 0 SVO
-99 9.0 2427184 1933-04-21 2427182 1933-04-19 2 SVO
-98 8.5 2427464 1934-01-26 2427464 1934-01-26 0 SVO
-97 8.5 2427744 1934-11-02 2427746 1934-11-04 -2 SVO
-96 9.2 2428029 1935-08-14 2428028 1935-08-13 1 SVO
-95 8.9 2428314 1936-05-25 2428310 1936-05-21 4 SVO
-94 9.0 2428595 1937-03-02 2428592 1937-02-27 3 SVO
-93 8.5 2428881 1937-12-13 2428874 1937-12-06 7 AAVSO
-92 9.0 2429167 1938-09-25 2429156 1938-09-14 11 SVO
-91 9.3 2429453 1939-07-08 2429438 1939-06-23 15 SVO
-90 8.5 2429736 1940-04-16 2429720 1940-03-31 16 AAVSO
-89 8.8 2430016 1941-01-21 2430002 1941-01-07 14 AAVSO
-88 9.1 2430299 1941-10-31 2430284 1941-10-16 15 SVO
-87 9.0 2430585 1942-08-13 2430566 1942-07-25 19 SVO
-86 8.5 2430868 1943-05-23 2430848 1943-05-03 20 AAVSO
-85   2431146 1944-02-25 2431130 1944-02-09 16 AAVSO
-84 9.2 2431429 1944-12-04 2431412 1944-11-17 17 AAVSO
-83 9.3 2431713 1945-09-14 2431694 1945-08-26 19 SVO
-82 8.9 2431992 1946-06-20 2431976 1946-06-04 16 AAVSO
-81   2432279 1947-04-03 2432258 1947-03-13 21 AAVSO
-80 9.4 2432560 1948-01-09 2432540 1947-12-20 20 AAVSO
-79 9.1 2432832 1948-10-07 2432822 1948-09-27 10 SVO
-78 8.6 2433107 1949-07-09 2433104 1949-07-06 3 SVO
-77   2433390 1950-04-18 2433386 1950-04-14 4 AAVSO
-76   2433671 1951-01-24 2433668 1951-01-21 3 AAVSO
-75 9.6 2433965 1951-11-14 2433950 1951-10-30 15 AAVSO
-74 9.5 2434251 1952-08-26 2434232 1952-08-07 19 SVO
-73 9.2 2434535 1953-06-06 2434514 1953-05-16 21 AAVSO
-72   2434810 1954-03-08 2434796 1954-02-22 14 AAVSO
-71 8.9 2435080 1954-12-03 2435078 1954-12-01 2 AAVSO
-70 8.7 2435362 1955-09-11 2435360 1955-09-09 2 SVO
-69 8.8 2435641 1956-06-16 2435642 1956-06-17 -1 AAVSO
-68 9.4 2435925 1957-03-27 2435924 1957-03-26 1 AAVSO
-67 9.1 2436202 1957-12-29 2436206 1958-01-02 -4 AAVSO
-66 8.7 2436485 1958-10-08 2436488 1958-10-11 -3 SVO
-65 9.6 2436767 1959-07-17 2436770 1959-07-20 -3 SVO
-64 8.9 2437051 1960-04-26 2437052 1960-04-27 -1 AAVSO
-63   2437333 1961-02-02 2437334 1961-02-03 -1 AAVSO
-62 9.2 2437606 1961-11-02 2437616 1961-11-12 -10 SVO
-61 9.2 2437895 1962-08-18 2437898 1962-08-21 -3 SVO
-60 9.4 2438178 1963-05-28 2438180 1963-05-30 -2 AAVSO
-59   2438452 1964-02-26 2438462 1964-03-07 -10 AAVSO
-58 9.1 2438730 1964-11-30 2438744 1964-12-14 -14 AAVSO
-57 8.9 2439011 1965-09-07 2439026 1965-09-22 -15 SVO
-56 8.8 2439293 1966-06-16 2439308 1966-07-01 -15 SVO
-55 9.6 2439570 1967-03-20 2439590 1967-04-09 -20 AAVSO
-54 9.0 2439852 1967-12-27 2439872 1968-01-16 -20 AAVSO
-53 8.8 2440134 1968-10-04 2440154 1968-10-24 -20 SVO
-52 8.8 2440418 1969-07-15 2440436 1969-08-02 -18 SVO
-51 9.4 2440696 1970-04-19 2440718 1970-05-11 -22 AAVSO
-50 9.2 2440980 1971-01-28 2441000 1971-02-17 -20 AAVSO
-49 9.3 2441272 1971-11-16 2441282 1971-11-26 -10 SVO
-48 9.0 2441553 1972-08-23 2441564 1972-09-03 -11 SVO
-47 9.2 2441841 1973-06-07 2441846 1973-06-12 -5 SVO
-46 9.1 2442119 1974-03-12 2442128 1974-03-21 -9 AAVSO
-45 9.0 2442401 1974-12-19 2442410 1974-12-28 -9 SVO
-44 9.2 2442686 1975-09-30 2442692 1975-10-06 -6 SVO
-43 9.1 2442971 1976-07-11 2442974 1976-07-14 -3 SVO
-42 9.1 2443246 1977-04-12 2443256 1977-04-22 -10 AAVSO
-41 9.0 2443537 1978-01-28 2443538 1978-01-29 -1 SVO
-40 9.7 2443822 1978-11-09 2443820 1978-11-07 2 SVO
-39 9.2 2444093 1979-08-07 2444102 1979-08-16 -9 SVO
-38 9.3 2444378 1980-05-18 2444384 1980-05-24 -6 SVO
-37 9.4 2444662 1981-02-26 2444666 1981-03-02 -4 AAVSO
-36 9.1 2444933 1981-11-24 2444948 1981-12-09 -15 SVO
-35 8.6 2445208 1982-08-26 2445230 1982-09-17 -22 SVO
-34 10.6 2445489 1983-06-03 2445512 1983-06-26 -23 AAVSO
-33 9.5 2445767 1984-03-07 2445794 1984-04-03 -27 AAVSO
-32 9.5 2446052 1984-12-17 2446076 1985-01-10 -24 AAVSO
-31 9.7 2446332 1985-09-23 2446358 1985-10-19 -26 SVO
-30 9.1 2446608 1986-06-26 2446640 1986-07-28 -32 SVO
-29 9.3 2446880 1987-03-25 2446922 1987-05-06 -42 SVO
-28 9.2 2447159 1987-12-29 2447204 1988-02-12 -45 SVO
-27 9.2 2447445 1988-10-10 2447486 1988-11-20 -41 SVO
-26 9.2 2447731 1989-07-23 2447768 1989-08-29 -37 SVO
-25 8.9 2448005 1990-04-23 2448050 1990-06-07 -45 SVO
-24 9.4 2448297 1991-02-09 2448332 1991-03-16 -35 SVO
-23 9.5 2448578 1991-11-17 2448614 1991-12-23 -36 SVO
-22 9.0 2448861 1992-08-26 2448896 1992-09-30 -35 SVO
-21 9.3 2449143 1993-06-04 2449178 1993-07-09 -35 SVO
-20 10.1 2449432 1994-03-20 2449460 1994-04-17 -28 SVO
-19 9.0 2449708 1994-12-21 2449742 1995-01-24 -34 SVO
-18 9.9 2449998 1995-10-07 2450024 1995-11-02 -26 SVO
-17 9.0 2450278 1996-07-13 2450306 1996-08-10 -28 SVO
-16 9.6 2450562 1997-04-23 2450588 1997-05-19 -26 SVO
-15 9.0 2450842 1998-01-28 2450870 1998-02-25 -28 SVO
-14 8.9 2451125 1998-11-07 2451152 1998-12-04 -27 SVO
-13 9.2 2451413 1999-08-22 2451434 1999-09-12 -21 SVO
-12 9.4 2451697 2000-06-01 2451716 2000-06-20 -19 SVO
-11 8.8 2451987 2001-03-18 2451998 2001-03-29 -11 SVO
-10 10.1 2452269 2001-12-25 2452280 2002-01-05 -11 SVO
-9 9.5 2452556 2002-10-08 2452562 2002-10-14 -6 SVO
-8 9.3 2452839 2003-07-18 2452844 2003-07-23 -5 SVO
-7 9.1 2453119 2004-04-23 2453126 2004-04-30 -7 SVO
-6 9.4 2453403 2005-02-01 2453408 2005-02-06 -5 SVO
-5 8.8 2453680 2005-11-05 2453690 2005-11-15 -10 SVO
-4 9.3 2453963 2006-08-15 2453972 2006-08-24 -9 SVO
-3 9.0 2454255 2007-06-03 2454254 2007-06-02 1 SVO
-2 9.4 2454544 2008-03-18 2454536 2008-03-10 8 SVO
-1 9.3 2454818 2008-12-17 2454818 2008-12-17 0 SVO
0 8.5 2455103 2009-09-28 2455100 2009-09-25 3 SVO
1 10.0 2455385 2010-07-07 2455382 2010-07-04 3 SVO
2 9.2 2455668 2011-04-16 2455664 2011-04-12 4 SVO
3 9.0 2455945 2012-01-18 2455946 2012-01-19 -1 SVO
4 9.0 2456227 2012-10-26 2456228 2012-10-27 -1 SVO
5 8.6 2456507 2013-08-02 2456510 2013-08-05 -3 SVO
6 9.7 2456785 2014-05-07 2456792 2014-05-14 -7 SVO
7 8.9 2457057 2015-02-03 2457074 2015-02-20 -17 SVO
8 9.7 2457348 2015-11-21 2457356 2015-11-29 -8 SVO
9 9.7 2457627 2016-08-26 2457638 2016-09-06 -11 SVO
10 8.4 2457885 2017-05-11 2457920 2017-06-15 -35 SVO
11 9.8 2458164 2018-02-14 2458202 2018-03-24 -38 SVO
12 9.3 2458451 2018-11-28 2458484 2018-12-31 -33 SVO
13 9.4 2458732 2019-09-05 2458766 2019-10-09 -34 SVO
14 8.9 2459009 2020-06-08 2459048 2020-07-17 -39 SVO
15 8.6 2459276 2021-03-02 2459330 2021-04-25 -54 SVO
16 9.0 2459566 2021-12-17 2459612 2022-02-01 -46 SVO
17 9.0 2459845 2022-09-22 2459894 2022-11-10 -49 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.