Maxima for X Dra
Period: 257.7, Epoch: 2444167
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-104 11.0 2417401 1906-07-09 2417366 1906-06-04 35 AAVSO
-103   2417659 1907-03-24 2417624 1907-02-17 35 AAVSO
-102 10.5 2417917 1907-12-07 2417882 1907-11-02 35 AAVSO
-101   2418184 1908-08-30 2418139 1908-07-16 45 GuL, 1920, 1.2
-99   2418688 1910-01-16 2418655 1909-12-14 33 AN, 1911, vol 188, p 311
-98   2418955 1910-10-10 2418912 1910-08-28 43 GuL, 1920, 1.2
-97 10.9 2419207 1911-06-19 2419170 1911-05-13 37 AAVSO
-96 11.0 2419465 1912-03-03 2419428 1912-01-26 37 AAVSO
-95 11.0 2419720 1912-11-13 2419686 1912-10-10 34 AAVSO
-94   2419983 1913-08-03 2419943 1913-06-24 40 AAVSO
-93   2420233 1914-04-10 2420201 1914-03-09 32 AAVSO
-91   2420747 1915-09-06 2420716 1915-08-06 31 AAVSO
-90   2420997 1916-05-13 2420974 1916-04-20 23 AAVSO
-89   2421257 1917-01-28 2421232 1917-01-03 25 AAVSO
-88 11.4 2421525 1917-10-23 2421489 1917-09-17 36 AAVSO
-87   2421784 1918-07-09 2421747 1918-06-02 37 AAVSO
-86 11.0 2422031 1919-03-13 2422005 1919-02-15 26 AAVSO
-85   2422293 1919-11-30 2422263 1919-10-31 30 AAVSO
-84   2422548 1920-08-11 2422520 1920-07-14 28 AAVSO
-83 11.5 2422815 1921-05-05 2422778 1921-03-29 37 AAVSO
-82 11.2 2423076 1922-01-21 2423036 1921-12-12 40 AAVSO
-81 11.0 2423328 1922-09-30 2423293 1922-08-26 35 SVO
-80 10.7 2423582 1923-06-11 2423551 1923-05-11 31 SVO
-79 11.1 2423835 1924-02-19 2423809 1924-01-24 26 AAVSO
-78 11.2 2424098 1924-11-08 2424066 1924-10-07 32 SVO
-77 11.0 2424360 1925-07-28 2424324 1925-06-22 36 SVO
-76 11.0 2424606 1926-03-31 2424582 1926-03-07 24 AAVSO
-75 10.6 2424853 1926-12-03 2424840 1926-11-20 13 SVO
-74 11.1 2425118 1927-08-25 2425097 1927-08-04 21 AAVSO
-73 11.2 2425385 1928-05-18 2425355 1928-04-18 30 AAVSO
-72 11.0 2425662 1929-02-19 2425613 1929-01-01 49 SVO
-71 11.0 2425905 1929-10-20 2425870 1929-09-15 35 SVO
-70 11.1 2426162 1930-07-04 2426128 1930-05-31 34 SVO
-69 10.2 2426404 1931-03-03 2426386 1931-02-13 18 AAVSO
-68 11.1 2426667 1931-11-21 2426643 1931-10-28 24 AAVSO
-67 11.4 2426939 1932-08-19 2426901 1932-07-12 38 SVO
-66 10.7 2427192 1933-04-29 2427159 1933-03-27 33 SVO
-65 11.8 2427457 1934-01-19 2427417 1933-12-10 40 AAVSO
-64 11.0 2427704 1934-09-23 2427674 1934-08-24 30 SVO
-63 11.7 2427970 1935-06-16 2427932 1935-05-09 38 SVO
-62 10.6 2428220 1936-02-21 2428190 1936-01-22 30 AAVSO
-61 10.5 2428480 1936-11-07 2428447 1936-10-05 33 SVO
-60 11.4 2428745 1937-07-30 2428705 1937-06-20 40 SVO
-59 11.1 2428997 1938-04-08 2428963 1938-03-05 34 AAVSO
-58 10.9 2429258 1938-12-25 2429220 1938-11-17 38 AAVSO
-57 11.2 2429525 1939-09-18 2429478 1939-08-02 47 SVO
-56 10.0 2429775 1940-05-25 2429736 1940-04-16 39 AAVSO
-55   2430035 1941-02-09 2429994 1940-12-30 41 AAVSO
-54 10.9 2430287 1941-10-19 2430251 1941-09-13 36 AAVSO
-53 11.1 2430562 1942-07-21 2430509 1942-05-29 53 AAVSO
-52 11.4 2430812 1943-03-28 2430767 1943-02-11 45 AAVSO
-51 11.4 2431071 1943-12-12 2431024 1943-10-26 47 AAVSO
-50 11.2 2431335 1944-09-01 2431282 1944-07-10 53 AAVSO
-49 10.7 2431599 1945-05-23 2431540 1945-03-25 59 AAVSO
-47 11.0 2432072 1946-09-08 2432055 1946-08-22 17 AAVSO
-46 11.0 2432322 1947-05-16 2432313 1947-05-07 9 AAVSO
-45   2432588 1948-02-06 2432571 1948-01-20 17 AAVSO
-44 10.9 2432834 1948-10-09 2432828 1948-10-03 6 SVO
-43 11.2 2433096 1949-06-28 2433086 1949-06-18 10 SVO
-42 11.4 2433349 1950-03-08 2433344 1950-03-03 5 AAVSO
-41 10.6 2433605 1950-11-19 2433601 1950-11-15 4 AAVSO
-40 11.2 2433858 1951-07-30 2433859 1951-07-31 -1 SVO
-39 11.5 2434115 1952-04-12 2434117 1952-04-14 -2 AAVSO
-38 11.5 2434373 1952-12-26 2434374 1952-12-27 -1 AAVSO
-37 11.1 2434622 1953-09-01 2434632 1953-09-11 -10 SVO
-36 11.0 2434883 1954-05-20 2434890 1954-05-27 -7 AAVSO
-35 11.5 2435147 1955-02-08 2435148 1955-02-09 -1 AAVSO
-34 11.3 2435405 1955-10-24 2435405 1955-10-24 0 SVO
-33 10.9 2435668 1956-07-13 2435663 1956-07-08 5 SVO
-32 11.6 2435926 1957-03-28 2435921 1957-03-23 5 AAVSO
-31 11.0 2436178 1957-12-05 2436178 1957-12-05 0 AAVSO
-30 11.3 2436435 1958-08-19 2436436 1958-08-20 -1 SVO
-29 10.8 2436699 1959-05-10 2436694 1959-05-05 5 SVO
-28 11.5 2436950 1960-01-16 2436951 1960-01-17 -1 AAVSO
-27 10.8 2437221 1960-10-13 2437209 1960-10-01 12 SVO
-26 10.9 2437480 1961-06-29 2437467 1961-06-16 13 SVO
-25 11.0 2437737 1962-03-13 2437725 1962-03-01 12 AAVSO
-24 10.9 2437991 1962-11-22 2437982 1962-11-13 9 AAVSO
-23 11.0 2438250 1963-08-08 2438240 1963-07-29 10 SVO
-22 10.8 2438507 1964-04-21 2438498 1964-04-12 9 SVO
-21   2438762 1965-01-01 2438755 1964-12-25 7 AAVSO
-20 10.9 2439025 1965-09-21 2439013 1965-09-09 12 SVO
-19 11.2 2439286 1966-06-09 2439271 1966-05-25 15 SVO
-18 11.0 2439540 1967-02-18 2439528 1967-02-06 12 AAVSO
-17 11.3 2439804 1967-11-09 2439786 1967-10-22 18 SVO
-16 10.7 2440065 1968-07-27 2440044 1968-07-06 21 SVO
-15 11.0 2440318 1969-04-06 2440302 1969-03-21 16 SVO
-14 11.4 2440582 1969-12-26 2440559 1969-12-03 23 SVO
-13 11.3 2440838 1970-09-08 2440817 1970-08-18 21 SVO
-12 11.2 2441096 1971-05-24 2441075 1971-05-03 21 SVO
-11 11.5 2441347 1972-01-30 2441332 1972-01-15 15 SVO
-10 10.8 2441600 1972-10-09 2441590 1972-09-29 10 SVO
-9 11.4 2441851 1973-06-17 2441848 1973-06-14 3 SVO
-8 11.0 2442112 1974-03-05 2442105 1974-02-26 7 SVO
-7 12.0 2442363 1974-11-11 2442363 1974-11-11 0 SVO
-6 11.5 2442625 1975-07-31 2442621 1975-07-27 4 SVO
-5 11.0 2442870 1976-04-01 2442879 1976-04-10 -9 SVO
-4 10.9 2443129 1976-12-16 2443136 1976-12-23 -7 SVO
-3 11.1 2443394 1977-09-07 2443394 1977-09-07 0 SVO
-2 11.1 2443648 1978-05-19 2443652 1978-05-23 -4 SVO
-1 10.9 2443912 1979-02-07 2443909 1979-02-04 3 SVO
0 10.8 2444164 1979-10-17 2444167 1979-10-20 -3 SVO
1 10.5 2444420 1980-06-29 2444425 1980-07-04 -5 SVO
2 11.1 2444682 1981-03-18 2444682 1981-03-18 0 SVO
3 11.4 2444942 1981-12-03 2444940 1981-12-01 2 SVO
4 11.5 2445201 1982-08-19 2445198 1982-08-16 3 SVO
5 11.0 2445453 1983-04-28 2445456 1983-05-01 -3 SVO
6 11.0 2445710 1984-01-10 2445713 1984-01-13 -3 SVO
7 11.2 2445972 1984-09-28 2445971 1984-09-27 1 SVO
8 11.3 2446234 1985-06-17 2446229 1985-06-12 5 SVO
9 11.7 2446485 1986-02-23 2446486 1986-02-24 -1 AAVSO
10 11.1 2446748 1986-11-13 2446744 1986-11-09 4 SVO
11 11.2 2447011 1987-08-03 2447002 1987-07-25 9 SVO
12 11.4 2447271 1988-04-19 2447259 1988-04-07 12 SVO
13 11.4 2447535 1989-01-08 2447517 1988-12-21 18 SVO
14 11.1 2447785 1989-09-15 2447775 1989-09-05 10 SVO
15 11.2 2448041 1990-05-29 2448033 1990-05-21 8 SVO
16   2448300 1991-02-12 2448290 1991-02-02 10 AAVSO
17 11.0 2448553 1991-10-23 2448548 1991-10-18 5 SVO
18 10.9 2448807 1992-07-03 2448806 1992-07-02 1 SVO
19   2449069 1993-03-22 2449063 1993-03-16 6 AAVSO
20 11.3 2449331 1993-12-09 2449321 1993-11-29 10 SVO
21 11.1 2449581 1994-08-16 2449579 1994-08-14 2 SVO
22 11.4 2449837 1995-04-29 2449836 1995-04-28 1 SVO
23 10.9 2450087 1996-01-04 2450094 1996-01-11 -7 SVO
24 11.2 2450348 1996-09-21 2450352 1996-09-25 -4 SVO
25 11.4 2450606 1997-06-06 2450610 1997-06-10 -4 SVO
26 11.1 2450868 1998-02-23 2450867 1998-02-22 1 SVO
27 11.2 2451129 1998-11-11 2451125 1998-11-07 4 SVO
28 11.0 2451384 1999-07-24 2451383 1999-07-23 1 SVO
29 10.7 2451639 2000-04-04 2451640 2000-04-05 -1 SVO
30 11.6 2451890 2000-12-11 2451898 2000-12-19 -8 SVO
31 11.3 2452153 2001-08-31 2452156 2001-09-03 -3 SVO
32 11.7 2452415 2002-05-20 2452413 2002-05-18 2 SVO
33 11.2 2452667 2003-01-27 2452671 2003-01-31 -4 SVO
34 11.4 2452929 2003-10-16 2452929 2003-10-16 0 SVO
35 11.3 2453188 2004-07-01 2453187 2004-06-30 1 SVO
36 11.1 2453443 2005-03-13 2453444 2005-03-14 -1 SVO
37   2453712 2005-12-07 2453702 2005-11-27 10 AAVSO
38 11.1 2453969 2006-08-21 2453960 2006-08-12 9 SVO
39   2454226 2007-05-05 2454217 2007-04-26 9 AAVSO
40 11.0 2454481 2008-01-15 2454475 2008-01-09 6 SVO
41 11.4 2454742 2008-10-02 2454733 2008-09-23 9 SVO
42 11.4 2455008 2009-06-25 2454990 2009-06-07 18 SVO
43 11.1 2455263 2010-03-07 2455248 2010-02-20 15 SVO
44 11.1 2455519 2010-11-18 2455506 2010-11-05 13 SVO
45 11.2 2455780 2011-08-06 2455764 2011-07-21 16 SVO
46 10.5 2456032 2012-04-14 2456021 2012-04-03 11 SVO
47 11.4 2456302 2013-01-09 2456279 2012-12-17 23 SVO
48 11.2 2456557 2013-09-21 2456537 2013-09-01 20 SVO
49 11.1 2456808 2014-05-30 2456794 2014-05-16 14 SVO
50 11.2 2457069 2015-02-15 2457052 2015-01-29 17 SVO
51 11.1 2457329 2015-11-02 2457310 2015-10-14 19 SVO
52 11.1 2457588 2016-07-18 2457567 2016-06-27 21 SVO
53 10.7 2457831 2017-03-18 2457825 2017-03-12 6 SVO
54 11.1 2458087 2017-11-29 2458083 2017-11-25 4 SVO
55 11.8 2458356 2018-08-25 2458341 2018-08-10 15 SVO
56 11.0 2458603 2019-04-29 2458598 2019-04-24 5 SVO
57 11.5 2458859 2020-01-10 2458856 2020-01-07 3 SVO
58 11.1 2459112 2020-09-19 2459114 2020-09-21 -2 SVO
59 11.0 2459365 2021-05-30 2459371 2021-06-05 -6 SVO
60 11.1 2459622 2022-02-11 2459629 2022-02-18 -7 SVO
61 11.3 2459874 2022-10-21 2459887 2022-11-03 -13 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.