Maxima for U Dra
Period: 316.13, Epoch: 2444290
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-100   2412650 1893-07-05 2412677 1893-08-01 -27 SVO
-95   2414240 1897-11-11 2414258 1897-11-29 -18 SVO
-94   2414573 1898-10-10 2414574 1898-10-11 -1 AnHar, 1909, vol 55, p 95
-93   2414902 1899-09-04 2414890 1899-08-23 12 AnHar, 1909, vol 55, p 95
-92   2415226 1900-07-25 2415206 1900-07-05 20 AnHar, 1909, vol 55, p 95
-91   2415553 1901-06-17 2415522 1901-05-17 31 GuL, 1920, 1.2
-90   2415880 1902-05-10 2415838 1902-03-29 42 SVO
-88   2416500 1904-01-20 2416471 1903-12-22 29 SVO
-87   2416811 1904-11-26 2416787 1904-11-02 24 AAVSO
-86 9.6 2417135 1905-10-16 2417103 1905-09-14 32 AAVSO
-85 9.2 2417448 1906-08-25 2417419 1906-07-27 29 AAVSO
-84 9.0 2417784 1907-07-27 2417735 1907-06-08 49 AAVSO
-83   2418065 1908-05-03 2418051 1908-04-19 14 AAVSO
-82   2418382 1909-03-16 2418367 1909-03-01 15 AAVSO
-81 9.5 2418696 1910-01-24 2418683 1910-01-11 13 AAVSO
-80 9.5 2419013 1910-12-07 2419000 1910-11-24 13 AAVSO
-79   2419321 1911-10-11 2419316 1911-10-06 5 AAVSO
-78 9.7 2419633 1912-08-18 2419632 1912-08-17 1 SVO
-77 9.5 2419949 1913-06-30 2419948 1913-06-29 1 SVO
-76 9.5 2420273 1914-05-20 2420264 1914-05-11 9 AAVSO
-74 9.9 2420900 1916-02-06 2420896 1916-02-02 4 AAVSO
-73 9.7 2421202 1916-12-04 2421213 1916-12-15 -11 AAVSO
-72 9.3 2421508 1917-10-06 2421529 1917-10-27 -21 SVO
-71   2421831 1918-08-25 2421845 1918-09-08 -14 AAVSO
-70 10.2 2422139 1919-06-29 2422161 1919-07-21 -22 AAVSO
-69 9.2 2422455 1920-05-10 2422477 1920-06-01 -22 AAVSO
-68 9.6 2422760 1921-03-11 2422793 1921-04-13 -33 AAVSO
-67 9.6 2423079 1922-01-24 2423109 1922-02-23 -30 SVO
-66 9.8 2423397 1922-12-08 2423425 1923-01-05 -28 SVO
-65 9.8 2423711 1923-10-18 2423742 1923-11-18 -31 SVO
-64 9.7 2424029 1924-08-31 2424058 1924-09-29 -29 SVO
-63 9.8 2424350 1925-07-18 2424374 1925-08-11 -24 SVO
-62 9.8 2424664 1926-05-28 2424690 1926-06-23 -26 SVO
-61 9.5 2424976 1927-04-05 2425006 1927-05-05 -30 SVO
-60 9.3 2425291 1928-02-14 2425322 1928-03-16 -31 SVO
-59 9.8 2425619 1929-01-07 2425638 1929-01-26 -19 SVO
-58 9.5 2425944 1929-11-28 2425954 1929-12-08 -10 SVO
-57 9.8 2426256 1930-10-06 2426271 1930-10-21 -15 SVO
-56 9.3 2426579 1931-08-25 2426587 1931-09-02 -8 SVO
-55 9.5 2426898 1932-07-09 2426903 1932-07-14 -5 SVO
-54 9.5 2427222 1933-05-29 2427219 1933-05-26 3 SVO
-53 9.5 2427540 1934-04-12 2427535 1934-04-07 5 SVO
-52 9.2 2427867 1935-03-05 2427851 1935-02-17 16 SVO
-51 10.1 2428195 1936-01-27 2428167 1935-12-30 28 SVO
-50 9.4 2428518 1936-12-15 2428484 1936-11-11 34 SVO
-49 9.9 2428844 1937-11-06 2428800 1937-09-23 44 SVO
-48 9.4 2429165 1938-09-23 2429116 1938-08-05 49 SVO
-47 9.5 2429495 1939-08-19 2429432 1939-06-17 63 SVO
-46 9.8 2429810 1940-06-29 2429748 1940-04-28 62 AAVSO
-45 9.3 2430141 1941-05-26 2430064 1941-03-10 77 AAVSO
-44 10.0 2430444 1942-03-25 2430380 1942-01-20 64 AAVSO
-43   2430778 1943-02-22 2430696 1942-12-02 82 AAVSO
-42 9.2 2431084 1943-12-25 2431013 1943-10-15 71 SVO
-41 9.5 2431410 1944-11-15 2431329 1944-08-26 81 SVO
-40 9.8 2431731 1945-10-02 2431645 1945-07-08 86 SVO
-39 9.5 2432050 1946-08-17 2431961 1946-05-20 89 SVO
-38 9.9 2432376 1947-07-09 2432277 1947-04-01 99 SVO
-37 9.4 2432692 1948-05-20 2432593 1948-02-11 99 SVO
-36 9.6 2432997 1949-03-21 2432909 1948-12-23 88 SVO
-35 9.6 2433322 1950-02-09 2433225 1949-11-04 97 SVO
-34 9.6 2433627 1950-12-11 2433542 1950-09-17 85 AAVSO
-33 9.6 2433943 1951-10-23 2433858 1951-07-30 85 SVO
-32 9.6 2434257 1952-09-01 2434174 1952-06-10 83 SVO
-31 9.6 2434572 1953-07-13 2434490 1953-04-22 82 SVO
-30 10.1 2434882 1954-05-19 2434806 1954-03-04 76 AAVSO
-29 10.2 2435196 1955-03-29 2435122 1955-01-14 74 AAVSO
-28 9.8 2435511 1956-02-07 2435438 1955-11-26 73 SVO
-27 9.7 2435814 1956-12-06 2435754 1956-10-07 60 AAVSO
-26 9.7 2436135 1957-10-23 2436071 1957-08-20 64 SVO
-25 9.7 2436443 1958-08-27 2436387 1958-07-02 56 SVO
-24 9.8 2436765 1959-07-15 2436703 1959-05-14 62 SVO
-23 9.7 2437081 1960-05-26 2437019 1960-03-25 62 AAVSO
-22 9.6 2437382 1961-03-23 2437335 1961-02-04 47 SVO
-21 9.7 2437687 1962-01-22 2437651 1961-12-17 36 SVO
-20 9.5 2437999 1962-11-30 2437967 1962-10-29 32 SVO
-19 10.0 2438319 1963-10-16 2438284 1963-09-11 35 SVO
-18 9.5 2438627 1964-08-19 2438600 1964-07-23 27 SVO
-17 9.7 2438950 1965-07-08 2438916 1965-06-04 34 SVO
-16 9.9 2439256 1966-05-10 2439232 1966-04-16 24 SVO
-15 9.6 2439558 1967-03-08 2439548 1967-02-26 10 SVO
-14 10.0 2439876 1968-01-20 2439864 1968-01-08 12 SVO
-13 9.7 2440185 1968-11-24 2440180 1968-11-19 5 SVO
-12 9.7 2440524 1969-10-29 2440496 1969-10-01 28 SVO
-11 10.1 2440838 1970-09-08 2440813 1970-08-14 25 SVO
-10 9.6 2441142 1971-07-09 2441129 1971-06-26 13 SVO
-9 9.6 2441454 1972-05-16 2441445 1972-05-07 9 SVO
-8 9.7 2441768 1973-03-26 2441761 1973-03-19 7 SVO
-7 9.4 2442062 1974-01-14 2442077 1974-01-29 -15 SVO
-6 9.6 2442379 1974-11-27 2442393 1974-12-11 -14 SVO
-5 9.7 2442699 1975-10-13 2442709 1975-10-23 -10 SVO
-4 10.1 2443009 1976-08-18 2443025 1976-09-03 -16 SVO
-3 9.8 2443329 1977-07-04 2443342 1977-07-17 -13 SVO
-2 9.7 2443643 1978-05-14 2443658 1978-05-29 -15 SVO
-1 9.9 2443967 1979-04-03 2443974 1979-04-10 -7 SVO
0 9.8 2444286 1980-02-16 2444290 1980-02-20 -4 SVO
1 9.8 2444612 1981-01-07 2444606 1981-01-01 6 SVO
2 9.8 2444935 1981-11-26 2444922 1981-11-13 13 SVO
3 9.4 2445250 1982-10-07 2445238 1982-09-25 12 SVO
4 9.8 2445574 1983-08-27 2445555 1983-08-08 19 SVO
5 10.0 2445899 1984-07-17 2445871 1984-06-19 28 SVO
6 9.5 2446216 1985-05-30 2446187 1985-05-01 29 SVO
7 9.6 2446534 1986-04-13 2446503 1986-03-13 31 SVO
8 9.8 2446874 1987-03-19 2446819 1987-01-23 55 SVO
9 10.1 2447198 1988-02-06 2447135 1987-12-05 63 SVO
10 9.6 2447524 1988-12-28 2447451 1988-10-16 73 SVO
11 9.3 2447850 1989-11-19 2447767 1989-08-28 83 SVO
12 9.9 2448176 1990-10-11 2448084 1990-07-11 92 SVO
13 9.8 2448509 1991-09-09 2448400 1991-05-23 109 SVO
14 9.7 2448832 1992-07-28 2448716 1992-04-03 116 SVO
15 9.6 2449153 1993-06-14 2449032 1993-02-13 121 SVO
16 9.6 2449488 1994-05-15 2449348 1993-12-26 140 SVO
17 9.5 2449807 1995-03-30 2449664 1994-11-07 143 SVO
18 9.7 2450136 1996-02-22 2449980 1995-09-19 156 SVO
19 9.6 2450465 1997-01-16 2450296 1996-07-31 169 SVO
20 9.8 2450789 1997-12-06 2450613 1997-06-13 176 SVO
21 9.8 2451105 1998-10-18 2450929 1998-04-25 176 SVO
22 9.4 2451428 1999-09-06 2451245 1999-03-07 183 SVO
23 9.8 2451748 2000-07-22 2451561 2000-01-17 187 SVO
24 9.7 2452072 2001-06-11 2451877 2000-11-28 195 SVO
25 9.7 2452394 2002-04-29 2452193 2001-10-10 201 SVO
26 10.0 2452714 2003-03-15 2452509 2002-08-22 205 SVO
27 9.1 2453029 2004-01-24 2452826 2003-07-05 203 SVO
28 10.0 2453346 2004-12-06 2453142 2004-05-16 204 SVO
29 9.5 2453669 2005-10-25 2453458 2005-03-28 211 SVO
30 9.8 2453989 2006-09-10 2453774 2006-02-07 215 SVO
31 9.5 2454310 2007-07-28 2454090 2006-12-20 220 SVO
32 10.1 2454633 2008-06-15 2454406 2007-11-01 227 SVO
33 9.8 2454960 2009-05-08 2454722 2008-09-12 238 SVO
34 9.4 2455282 2010-03-26 2455038 2009-07-25 244 SVO
35 10.4 2455595 2011-02-02 2455355 2010-06-07 240 SVO
36 9.3 2455904 2011-12-08 2455671 2011-04-19 233 SVO
37 9.3 2456217 2012-10-16 2455987 2012-02-29 230 SVO
38 9.4 2456533 2013-08-28 2456303 2013-01-10 230 SVO
39 9.8 2456855 2014-07-16 2456619 2013-11-22 236 SVO
40 9.3 2457162 2015-05-19 2456935 2014-10-04 227 SVO
41 10.1 2457483 2016-04-04 2457251 2015-08-16 232 SVO
42 9.4 2457799 2017-02-14 2457567 2016-06-27 232 SVO
43 10.1 2458121 2018-01-02 2457884 2017-05-10 237 SVO
44 9.7 2458421 2018-10-29 2458200 2018-03-22 221 SVO
45 9.6 2458738 2019-09-11 2458516 2019-02-01 222 SVO
46 9.6 2459053 2020-07-22 2458832 2019-12-14 221 SVO
47 9.6 2459356 2021-05-21 2459148 2020-10-25 208 SVO
48 9.6 2459674 2022-04-04 2459464 2021-09-06 210 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.