Maxima for X Dra
Period: 257.33, 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 2417405 1906-07-13 -4 AAVSO
-103   2417659 1907-03-24 2417662 1907-03-27 -3 AAVSO
-102 10.5 2417917 1907-12-07 2417919 1907-12-09 -2 AAVSO
-101   2418184 1908-08-30 2418177 1908-08-23 7 GuL, 1920, 1.2
-99   2418688 1910-01-16 2418691 1910-01-19 -3 AN, 1911, vol 188, p 311
-98   2418955 1910-10-10 2418949 1910-10-04 6 GuL, 1920, 1.2
-97 10.9 2419207 1911-06-19 2419206 1911-06-18 1 AAVSO
-96 11.0 2419465 1912-03-03 2419463 1912-03-01 2 AAVSO
-95 11.0 2419720 1912-11-13 2419721 1912-11-14 -1 AAVSO
-94   2419983 1913-08-03 2419978 1913-07-29 5 AAVSO
-93   2420233 1914-04-10 2420235 1914-04-12 -2 AAVSO
-91   2420747 1915-09-06 2420750 1915-09-09 -3 AAVSO
-90   2420997 1916-05-13 2421007 1916-05-23 -10 AAVSO
-89   2421257 1917-01-28 2421265 1917-02-05 -8 AAVSO
-88 11.4 2421525 1917-10-23 2421522 1917-10-20 3 AAVSO
-87   2421784 1918-07-09 2421779 1918-07-04 5 AAVSO
-86 11.0 2422031 1919-03-13 2422037 1919-03-19 -6 AAVSO
-85   2422293 1919-11-30 2422294 1919-12-01 -1 AAVSO
-84   2422548 1920-08-11 2422551 1920-08-14 -3 AAVSO
-83 11.5 2422815 1921-05-05 2422809 1921-04-29 6 AAVSO
-82 11.2 2423076 1922-01-21 2423066 1922-01-11 10 AAVSO
-81 11.0 2423328 1922-09-30 2423323 1922-09-25 5 SVO
-80 10.7 2423582 1923-06-11 2423581 1923-06-10 1 SVO
-79 11.1 2423835 1924-02-19 2423838 1924-02-22 -3 AAVSO
-78 11.2 2424098 1924-11-08 2424095 1924-11-05 3 SVO
-77 11.0 2424360 1925-07-28 2424353 1925-07-21 7 SVO
-76 11.0 2424606 1926-03-31 2424610 1926-04-04 -4 AAVSO
-75 10.6 2424853 1926-12-03 2424867 1926-12-17 -14 SVO
-74 11.1 2425118 1927-08-25 2425125 1927-09-01 -7 AAVSO
-73 11.2 2425385 1928-05-18 2425382 1928-05-15 3 AAVSO
-72 11.0 2425662 1929-02-19 2425639 1929-01-27 23 SVO
-71 11.0 2425905 1929-10-20 2425897 1929-10-12 8 SVO
-70 11.1 2426162 1930-07-04 2426154 1930-06-26 8 SVO
-69 10.2 2426404 1931-03-03 2426411 1931-03-10 -7 AAVSO
-68 11.1 2426667 1931-11-21 2426669 1931-11-23 -2 AAVSO
-67 11.4 2426939 1932-08-19 2426926 1932-08-06 13 SVO
-66 10.7 2427192 1933-04-29 2427183 1933-04-20 9 SVO
-65 11.8 2427457 1934-01-19 2427441 1934-01-03 16 AAVSO
-64 11.0 2427704 1934-09-23 2427698 1934-09-17 6 SVO
-63 11.7 2427970 1935-06-16 2427955 1935-06-01 15 SVO
-62 10.6 2428220 1936-02-21 2428213 1936-02-14 7 AAVSO
-61 10.5 2428480 1936-11-07 2428470 1936-10-28 10 SVO
-60 11.4 2428745 1937-07-30 2428727 1937-07-12 18 SVO
-59 11.1 2428997 1938-04-08 2428985 1938-03-27 12 AAVSO
-58 10.9 2429258 1938-12-25 2429242 1938-12-09 16 AAVSO
-57 11.2 2429525 1939-09-18 2429499 1939-08-23 26 SVO
-56 10.0 2429775 1940-05-25 2429757 1940-05-07 18 AAVSO
-55   2430035 1941-02-09 2430014 1941-01-19 21 AAVSO
-54 10.9 2430287 1941-10-19 2430271 1941-10-03 16 AAVSO
-53 11.1 2430562 1942-07-21 2430529 1942-06-18 33 AAVSO
-52 11.4 2430812 1943-03-28 2430786 1943-03-02 26 AAVSO
-51 11.4 2431071 1943-12-12 2431043 1943-11-14 28 AAVSO
-50 11.2 2431335 1944-09-01 2431301 1944-07-29 34 AAVSO
-49 10.7 2431599 1945-05-23 2431558 1945-04-12 41 AAVSO
-47 11.0 2432072 1946-09-08 2432072 1946-09-08 0 AAVSO
-46 11.0 2432322 1947-05-16 2432330 1947-05-24 -8 AAVSO
-45   2432588 1948-02-06 2432587 1948-02-05 1 AAVSO
-44 10.9 2432834 1948-10-09 2432844 1948-10-19 -10 SVO
-43 11.2 2433096 1949-06-28 2433102 1949-07-04 -6 SVO
-42 11.4 2433349 1950-03-08 2433359 1950-03-18 -10 AAVSO
-41 10.6 2433605 1950-11-19 2433616 1950-11-30 -11 AAVSO
-40 11.2 2433858 1951-07-30 2433874 1951-08-15 -16 SVO
-39 11.5 2434115 1952-04-12 2434131 1952-04-28 -16 AAVSO
-38 11.5 2434373 1952-12-26 2434388 1953-01-10 -15 AAVSO
-37 11.1 2434622 1953-09-01 2434646 1953-09-25 -24 SVO
-36 11.0 2434883 1954-05-20 2434903 1954-06-09 -20 AAVSO
-35 11.5 2435147 1955-02-08 2435160 1955-02-21 -13 AAVSO
-34 11.3 2435405 1955-10-24 2435418 1955-11-06 -13 SVO
-33 10.9 2435668 1956-07-13 2435675 1956-07-20 -7 SVO
-32 11.6 2435926 1957-03-28 2435932 1957-04-03 -6 AAVSO
-31 11.0 2436178 1957-12-05 2436190 1957-12-17 -12 AAVSO
-30 11.3 2436435 1958-08-19 2436447 1958-08-31 -12 SVO
-29 10.8 2436699 1959-05-10 2436704 1959-05-15 -5 SVO
-28 11.5 2436950 1960-01-16 2436962 1960-01-28 -12 AAVSO
-27 10.8 2437221 1960-10-13 2437219 1960-10-11 2 SVO
-26 10.9 2437480 1961-06-29 2437476 1961-06-25 4 SVO
-25 11.0 2437737 1962-03-13 2437734 1962-03-10 3 AAVSO
-24 10.9 2437991 1962-11-22 2437991 1962-11-22 0 AAVSO
-23 11.0 2438250 1963-08-08 2438248 1963-08-06 2 SVO
-22 10.8 2438507 1964-04-21 2438506 1964-04-20 1 SVO
-21   2438762 1965-01-01 2438763 1965-01-02 -1 AAVSO
-20 10.9 2439025 1965-09-21 2439020 1965-09-16 5 SVO
-19 11.2 2439286 1966-06-09 2439278 1966-06-01 8 SVO
-18 11.0 2439540 1967-02-18 2439535 1967-02-13 5 AAVSO
-17 11.3 2439804 1967-11-09 2439792 1967-10-28 12 SVO
-16 10.7 2440065 1968-07-27 2440050 1968-07-12 15 SVO
-15 11.0 2440318 1969-04-06 2440307 1969-03-26 11 SVO
-14 11.4 2440582 1969-12-26 2440564 1969-12-08 18 SVO
-13 11.3 2440838 1970-09-08 2440822 1970-08-23 16 SVO
-12 11.2 2441096 1971-05-24 2441079 1971-05-07 17 SVO
-11 11.5 2441347 1972-01-30 2441336 1972-01-19 11 SVO
-10 10.8 2441600 1972-10-09 2441594 1972-10-03 6 SVO
-9 11.4 2441851 1973-06-17 2441851 1973-06-17 0 SVO
-8 11.0 2442112 1974-03-05 2442108 1974-03-01 4 SVO
-7 12.0 2442363 1974-11-11 2442366 1974-11-14 -3 SVO
-6 11.5 2442625 1975-07-31 2442623 1975-07-29 2 SVO
-5 11.0 2442870 1976-04-01 2442880 1976-04-11 -10 SVO
-4 10.9 2443129 1976-12-16 2443138 1976-12-25 -9 SVO
-3 11.1 2443394 1977-09-07 2443395 1977-09-08 -1 SVO
-2 11.1 2443648 1978-05-19 2443652 1978-05-23 -4 SVO
-1 10.9 2443912 1979-02-07 2443910 1979-02-05 2 SVO
0 10.8 2444164 1979-10-17 2444167 1979-10-20 -3 SVO
1 10.5 2444420 1980-06-29 2444424 1980-07-03 -4 SVO
2 11.1 2444682 1981-03-18 2444682 1981-03-18 0 SVO
3 11.4 2444942 1981-12-03 2444939 1981-11-30 3 SVO
4 11.5 2445201 1982-08-19 2445196 1982-08-14 5 SVO
5 11.0 2445453 1983-04-28 2445454 1983-04-29 -1 SVO
6 11.0 2445710 1984-01-10 2445711 1984-01-11 -1 SVO
7 11.2 2445972 1984-09-28 2445968 1984-09-24 4 SVO
8 11.3 2446234 1985-06-17 2446226 1985-06-09 8 SVO
9 11.7 2446485 1986-02-23 2446483 1986-02-21 2 AAVSO
10 11.1 2446748 1986-11-13 2446740 1986-11-05 8 SVO
11 11.2 2447011 1987-08-03 2446998 1987-07-21 13 SVO
12 11.4 2447271 1988-04-19 2447255 1988-04-03 16 SVO
13 11.4 2447535 1989-01-08 2447512 1988-12-16 23 SVO
14 11.1 2447785 1989-09-15 2447770 1989-08-31 15 SVO
15 11.2 2448041 1990-05-29 2448027 1990-05-15 14 SVO
16   2448300 1991-02-12 2448284 1991-01-27 16 AAVSO
17 11.0 2448553 1991-10-23 2448542 1991-10-12 11 SVO
18 10.9 2448807 1992-07-03 2448799 1992-06-25 8 SVO
19   2449069 1993-03-22 2449056 1993-03-09 13 AAVSO
20 11.3 2449331 1993-12-09 2449314 1993-11-22 17 SVO
21 11.1 2449581 1994-08-16 2449571 1994-08-06 10 SVO
22 11.4 2449837 1995-04-29 2449828 1995-04-20 9 SVO
23 10.9 2450087 1996-01-04 2450086 1996-01-03 1 SVO
24 11.2 2450348 1996-09-21 2450343 1996-09-16 5 SVO
25 11.4 2450606 1997-06-06 2450600 1997-05-31 6 SVO
26 11.1 2450868 1998-02-23 2450858 1998-02-13 10 SVO
27 11.2 2451129 1998-11-11 2451115 1998-10-28 14 SVO
28 11.0 2451384 1999-07-24 2451372 1999-07-12 12 SVO
29 10.7 2451639 2000-04-04 2451630 2000-03-26 9 SVO
30 11.6 2451890 2000-12-11 2451887 2000-12-08 3 SVO
31 11.3 2452153 2001-08-31 2452144 2001-08-22 9 SVO
32 11.7 2452415 2002-05-20 2452402 2002-05-07 13 SVO
33 11.2 2452667 2003-01-27 2452659 2003-01-19 8 SVO
34 11.4 2452929 2003-10-16 2452916 2003-10-03 13 SVO
35 11.3 2453188 2004-07-01 2453174 2004-06-17 14 SVO
36 11.1 2453443 2005-03-13 2453431 2005-03-01 12 SVO
37   2453712 2005-12-07 2453688 2005-11-13 24 AAVSO
38 11.1 2453969 2006-08-21 2453946 2006-07-29 23 SVO
39   2454226 2007-05-05 2454203 2007-04-12 23 AAVSO
40 11.0 2454481 2008-01-15 2454460 2007-12-25 21 SVO
41 11.4 2454742 2008-10-02 2454718 2008-09-08 24 SVO
42 11.4 2455008 2009-06-25 2454975 2009-05-23 33 SVO
43 11.1 2455263 2010-03-07 2455232 2010-02-04 31 SVO
44 11.1 2455519 2010-11-18 2455490 2010-10-20 29 SVO
45 11.2 2455780 2011-08-06 2455747 2011-07-04 33 SVO
46 10.5 2456032 2012-04-14 2456004 2012-03-17 28 SVO
47 11.4 2456302 2013-01-09 2456262 2012-11-30 40 SVO
48 11.2 2456557 2013-09-21 2456519 2013-08-14 38 SVO
49 11.1 2456808 2014-05-30 2456776 2014-04-28 32 SVO
50 11.2 2457069 2015-02-15 2457034 2015-01-11 35 SVO
51 11.1 2457329 2015-11-02 2457291 2015-09-25 38 SVO
52 11.1 2457588 2016-07-18 2457548 2016-06-08 40 SVO
53 10.7 2457831 2017-03-18 2457805 2017-02-20 26 SVO
54 11.1 2458087 2017-11-29 2458063 2017-11-05 24 SVO
55 11.8 2458356 2018-08-25 2458320 2018-07-20 36 SVO
56 11.0 2458603 2019-04-29 2458577 2019-04-03 26 SVO
57 11.5 2458859 2020-01-10 2458835 2019-12-17 24 SVO
58 11.1 2459112 2020-09-19 2459092 2020-08-30 20 SVO
59 11.0 2459365 2021-05-30 2459349 2021-05-14 16 SVO
60 11.1 2459622 2022-02-11 2459607 2022-01-27 15 SVO
61 11.3 2459874 2022-10-21 2459864 2022-10-11 10 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.