Maxima for T Dra
Period: 421.62, Epoch: 2443957
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-73   2413141 1894-11-08 2413179 1894-12-16 -38 AnHar, 1909, vol 55, p 95
-72   2413598 1896-02-08 2413600 1896-02-10 -2 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-71   2414014 1897-03-30 2414022 1897-04-07 -8 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-70   2414460 1898-06-19 2414444 1898-06-03 16 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-69   2414891 1899-08-24 2414865 1899-07-29 26 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-68   2415337 1900-11-13 2415287 1900-09-24 50 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-67   2415749 1901-12-30 2415708 1901-11-19 41 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-66   2416164 1903-02-18 2416130 1903-01-15 34 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-65   2416594 1904-04-23 2416552 1904-03-12 42 AAVSO
-64   2417009 1905-06-12 2416973 1905-05-07 36 AAVSO
-63 10.3 2417396 1906-07-04 2417395 1906-07-03 1 AAVSO
-62 10.1 2417812 1907-08-24 2417817 1907-08-29 -5 AAVSO
-61 10.0 2418236 1908-10-21 2418238 1908-10-23 -2 AAVSO
-60 9.0 2418661 1909-12-20 2418660 1909-12-19 1 AAVSO
-58 10.0 2419531 1912-05-08 2419503 1912-04-10 28 AAVSO
-57   2419945 1913-06-26 2419925 1913-06-06 20 AAVSO
-56 9.4 2420342 1914-07-28 2420346 1914-08-01 -4 SVO
-55 9.5 2420767 1915-09-26 2420768 1915-09-27 -1 AAVSO
-54 9.5 2421170 1916-11-02 2421190 1916-11-22 -20 SVO
-53 8.9 2421572 1917-12-09 2421611 1918-01-17 -39 SVO
-52 9.6 2421990 1919-01-31 2422033 1919-03-15 -43 SVO
-51 9.6 2422453 1920-05-08 2422454 1920-05-09 -1 SVO
-50 9.9 2422847 1921-06-06 2422876 1921-07-05 -29 SVO
-49 9.8 2423261 1922-07-25 2423298 1922-08-31 -37 SVO
-48 10.2 2423722 1923-10-29 2423719 1923-10-26 3 SVO
-47 10.4 2424112 1924-11-22 2424141 1924-12-21 -29 SVO
-46 10.8 2424548 1926-02-01 2424562 1926-02-15 -14 SVO
-45 10.4 2424964 1927-03-24 2424984 1927-04-13 -20 SVO
-44 11.0 2425396 1928-05-29 2425406 1928-06-08 -10 SVO
-43 11.0 2425819 1929-07-26 2425827 1929-08-03 -8 SVO
-42 10.7 2426251 1930-10-01 2426249 1930-09-29 2 SVO
-41 10.3 2426687 1931-12-11 2426671 1931-11-25 16 SVO
-40 9.7 2427096 1933-01-23 2427092 1933-01-19 4 SVO
-39 9.5 2427527 1934-03-30 2427514 1934-03-17 13 SVO
-38 9.1 2427961 1935-06-07 2427935 1935-05-12 26 SVO
-37 9.1 2428372 1936-07-22 2428357 1936-07-07 15 SVO
-36 8.6 2428794 1937-09-17 2428779 1937-09-02 15 SVO
-35 9.1 2429224 1938-11-21 2429200 1938-10-28 24 SVO
-34 9.0 2429647 1940-01-18 2429622 1939-12-24 25 SVO
-33 9.3 2430076 1941-03-22 2430044 1941-02-18 32 SVO
-32 9.2 2430481 1942-05-01 2430465 1942-04-15 16 SVO
-31 9.4 2430911 1943-07-05 2430887 1943-06-11 24 SVO
-30 9.6 2431323 1944-08-20 2431308 1944-08-05 15 SVO
-29 9.4 2431743 1945-10-14 2431730 1945-10-01 13 SVO
-28 9.3 2432192 1947-01-06 2432152 1946-11-27 40 SVO
-27   2432579 1948-01-28 2432573 1948-01-22 6 AAVSO
-26 9.9 2433012 1949-04-05 2432995 1949-03-19 17 SVO
-25 10.0 2433422 1950-05-20 2433417 1950-05-15 5 SVO
-24 10.4 2433850 1951-07-22 2433838 1951-07-10 12 AAVSO
-23 11.0 2434248 1952-08-23 2434260 1952-09-04 -12 AAVSO
-22 10.5 2434644 1953-09-23 2434681 1953-10-30 -37 SVO
-21 10.6 2435116 1955-01-08 2435103 1954-12-26 13 SVO
-20 9.8 2435467 1955-12-25 2435525 1956-02-21 -58 SVO
-19 9.5 2435935 1957-04-06 2435946 1957-04-17 -11 AAVSO
-18 9.0 2436349 1958-05-25 2436368 1958-06-13 -19 AAVSO
-17 9.5 2436748 1959-06-28 2436789 1959-08-08 -41 SVO
-16 10.5 2437175 1960-08-28 2437211 1960-10-03 -36 SVO
-15 9.8 2437602 1961-10-29 2437633 1961-11-29 -31 SVO
-14 9.5 2438026 1962-12-27 2438054 1963-01-24 -28 SVO
-13 9.8 2438445 1964-02-19 2438476 1964-03-21 -31 SVO
-12 9.6 2438871 1965-04-20 2438898 1965-05-17 -27 SVO
-11 9.7 2439276 1966-05-30 2439319 1966-07-12 -43 SVO
-10 10.0 2439695 1967-07-23 2439741 1967-09-07 -46 SVO
-9 10.2 2440108 1968-09-08 2440162 1968-11-01 -54 SVO
-8 10.4 2440554 1969-11-28 2440584 1969-12-28 -30 SVO
-7 10.5 2440982 1971-01-30 2441006 1971-02-23 -24 SVO
-6 10.8 2441409 1972-04-01 2441427 1972-04-19 -18 AAVSO
-5 10.1 2441806 1973-05-03 2441849 1973-06-15 -43 SVO
-4 10.8 2442218 1974-06-19 2442271 1974-08-11 -53 SVO
-3 10.1 2442654 1975-08-29 2442692 1975-10-06 -38 SVO
-2 9.9 2443071 1976-10-19 2443114 1976-12-01 -43 SVO
-1 10.4 2443503 1977-12-25 2443535 1978-01-26 -32 SVO
0 9.9 2443924 1979-02-19 2443957 1979-03-24 -33 SVO
1 9.8 2444365 1980-05-05 2444379 1980-05-19 -14 SVO
2 9.3 2444784 1981-06-28 2444800 1981-07-14 -16 SVO
3 10.0 2445218 1982-09-05 2445222 1982-09-09 -4 SVO
4 10.0 2445637 1983-10-29 2445643 1983-11-04 -6 SVO
5 10.2 2446069 1985-01-03 2446065 1984-12-30 4 SVO
6 9.6 2446494 1986-03-04 2446487 1986-02-25 7 SVO
7 10.0 2446914 1987-04-28 2446908 1987-04-22 6 SVO
8 9.8 2447353 1988-07-10 2447330 1988-06-17 23 SVO
9 9.9 2447775 1989-09-05 2447752 1989-08-13 23 SVO
10 9.4 2448181 1990-10-16 2448173 1990-10-08 8 SVO
11 10.0 2448609 1991-12-18 2448595 1991-12-04 14 SVO
12 9.7 2449039 1993-02-20 2449016 1993-01-28 23 SVO
13 9.8 2449451 1994-04-08 2449438 1994-03-26 13 SVO
14 9.2 2449879 1995-06-10 2449860 1995-05-22 19 SVO
15 9.4 2450311 1996-08-15 2450281 1996-07-16 30 SVO
16 9.5 2450747 1997-10-25 2450703 1997-09-11 44 SVO
17 9.0 2451167 1998-12-19 2451125 1998-11-07 42 SVO
18 9.5 2451587 2000-02-12 2451546 2000-01-02 41 SVO
19 9.8 2452014 2001-04-14 2451968 2001-02-27 46 SVO
20 9.0 2452430 2002-06-04 2452389 2002-04-24 41 SVO
21 10.2 2452853 2003-08-01 2452811 2003-06-20 42 SVO
22 9.8 2453276 2004-09-27 2453233 2004-08-15 43 SVO
23 9.7 2453689 2005-11-14 2453654 2005-10-10 35 SVO
24 9.4 2454134 2007-02-02 2454076 2006-12-06 58 SVO
25 9.4 2454561 2008-04-04 2454498 2008-02-01 63 SVO
26 9.4 2454965 2009-05-13 2454919 2009-03-28 46 SVO
27 9.8 2455385 2010-07-07 2455341 2010-05-24 44 SVO
28 9.9 2455815 2011-09-10 2455762 2011-07-19 53 SVO
29 9.3 2456216 2012-10-15 2456184 2012-09-13 32 SVO
30 10.6 2456658 2013-12-31 2456606 2013-11-09 52 SVO
31 10.4 2457076 2015-02-22 2457027 2015-01-04 49 SVO
32 10.1 2457477 2016-03-29 2457449 2016-03-01 28 SVO
33 11.0 2457908 2017-06-03 2457870 2017-04-26 38 SVO
34 10.8 2458322 2018-07-22 2458292 2018-06-22 30 SVO
35 10.3 2458761 2019-10-04 2458714 2019-08-18 47 SVO
36 10.3 2459175 2020-11-21 2459135 2020-10-12 40 SVO
37 10.1 2459604 2022-01-24 2459557 2021-12-08 47 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.