Maxima for U Ser
Period: 237.5, Epoch: 2445652
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-139   2412573 1893-04-19 2412640 1893-06-25 -67 AnHar, 1909, vol 55, p 95
-136   2413295 1895-04-11 2413352 1895-06-07 -57 AnHar, 1909, vol 55, p 95
-134   2413795 1896-08-23 2413827 1896-09-24 -32 AnHar, 1909, vol 55, p 95
-133   2414023 1897-04-08 2414065 1897-05-20 -42 AnHar, 1909, vol 55, p 95
-131   2414509 1898-08-07 2414540 1898-09-07 -31 AnHar, 1909, vol 55, p 95
-130   2414741 1899-03-27 2414777 1899-05-02 -36 AnHar, 1909, vol 55, p 95
-128   2415222 1900-07-21 2415252 1900-08-20 -30 SVO
-127   2415452 1901-03-08 2415490 1901-04-15 -38 AnHar, 1909, vol 55, p 95
-125   2415933 1902-07-02 2415965 1902-08-03 -32 AnHar, 1909, vol 55, p 95
-124   2416156 1903-02-10 2416202 1903-03-28 -46 AAVSO
-123   2416394 1903-10-06 2416440 1903-11-21 -46 AAVSO
-122 7.7 2416639 1904-06-07 2416677 1904-07-15 -38 SVO
-121   2416886 1905-02-09 2416915 1905-03-10 -29 AAVSO
-120   2417110 1905-09-21 2417152 1905-11-02 -42 AAVSO
-119 8.5 2417344 1906-05-13 2417390 1906-06-28 -46 AAVSO
-117 8.5 2417822 1907-09-03 2417865 1907-10-16 -43 AAVSO
-116   2418064 1908-05-02 2418102 1908-06-09 -38 SVO
-115   2418307 1908-12-31 2418340 1909-02-02 -33 AAVSO
-114 8.7 2418554 1909-09-04 2418577 1909-09-27 -23 AAVSO
-113 7.8 2418776 1910-04-14 2418815 1910-05-23 -39 AAVSO
-112   2419016 1910-12-10 2419052 1911-01-15 -36 AAVSO
-111 8.6 2419259 1911-08-10 2419290 1911-09-10 -31 AAVSO
-110   2419492 1912-03-30 2419527 1912-05-04 -35 AAVSO
-108 8.4 2419971 1913-07-22 2420002 1913-08-22 -31 SVO
-107 7.8 2420210 1914-03-18 2420240 1914-04-17 -30 AAVSO
-106   2420448 1914-11-11 2420477 1914-12-10 -29 AAVSO
-105 8.3 2420678 1915-06-29 2420715 1915-08-05 -37 SVO
-104   2420939 1916-03-16 2420952 1916-03-29 -13 AAVSO
-103 8.3 2421158 1916-10-21 2421190 1916-11-22 -32 AAVSO
-102 8.4 2421392 1917-06-12 2421427 1917-07-17 -35 SVO
-101 8.9 2421626 1918-02-01 2421665 1918-03-12 -39 AAVSO
-100 8.5 2421868 1918-10-01 2421902 1918-11-04 -34 AAVSO
-99 9.0 2422115 1919-06-05 2422140 1919-06-30 -25 SVO
-98 8.1 2422348 1920-01-24 2422377 1920-02-22 -29 AAVSO
-97 8.4 2422577 1920-09-09 2422615 1920-10-17 -38 SVO
-96 8.5 2422815 1921-05-05 2422852 1921-06-11 -37 SVO
-95 8.0 2423060 1922-01-05 2423090 1922-02-04 -30 AAVSO
-94 9.0 2423289 1922-08-22 2423327 1922-09-29 -38 SVO
-93 8.8 2423530 1923-04-20 2423565 1923-05-25 -35 SVO
-92 8.2 2423759 1923-12-05 2423802 1924-01-17 -43 SVO
-91 8.9 2424000 1924-08-02 2424040 1924-09-11 -40 SVO
-90 8.7 2424242 1925-04-01 2424277 1925-05-06 -35 SVO
-89 8.4 2424479 1925-11-24 2424515 1925-12-30 -36 AAVSO
-88 8.3 2424708 1926-07-11 2424752 1926-08-24 -44 SVO
-87 7.8 2424947 1927-03-07 2424990 1927-04-19 -43 AAVSO
-86 8.4 2425187 1927-11-02 2425227 1927-12-12 -40 AAVSO
-85 8.3 2425427 1928-06-29 2425465 1928-08-06 -38 SVO
-84 8.6 2425656 1929-02-13 2425702 1929-03-31 -46 AAVSO
-83 8.4 2425899 1929-10-14 2425940 1929-11-24 -41 AAVSO
-82 8.8 2426138 1930-06-10 2426177 1930-07-19 -39 SVO
-81 8.6 2426386 1931-02-13 2426415 1931-03-14 -29 AAVSO
-80 8.8 2426614 1931-09-29 2426652 1931-11-06 -38 SVO
-79 8.1 2426836 1932-05-08 2426890 1932-07-01 -54 SVO
-78 8.1 2427084 1933-01-11 2427127 1933-02-23 -43 AAVSO
-77 8.7 2427321 1933-09-05 2427365 1933-10-19 -44 SVO
-76 8.4 2427563 1934-05-05 2427602 1934-06-13 -39 SVO
-75 8.6 2427807 1935-01-04 2427840 1935-02-06 -33 AAVSO
-74 9.0 2428046 1935-08-31 2428077 1935-10-01 -31 SVO
-73 8.4 2428286 1936-04-27 2428315 1936-05-26 -29 SVO
-72 8.6 2428528 1936-12-25 2428552 1937-01-18 -24 AAVSO
-71 9.1 2428760 1937-08-14 2428790 1937-09-13 -30 SVO
-70 8.3 2428996 1938-04-07 2429027 1938-05-08 -31 SVO
-69 8.7 2429243 1938-12-10 2429265 1939-01-01 -22 SVO
-68 8.8 2429478 1939-08-02 2429502 1939-08-26 -24 SVO
-67 8.2 2429710 1940-03-21 2429740 1940-04-20 -30 SVO
-66 9.3 2429967 1940-12-03 2429977 1940-12-13 -10 AAVSO
-65 9.2 2430200 1941-07-24 2430215 1941-08-08 -15 SVO
-64 8.4 2430438 1942-03-19 2430452 1942-04-02 -14 SVO
-63   2430684 1942-11-20 2430690 1942-11-26 -6 AAVSO
-62 8.7 2430909 1943-07-03 2430927 1943-07-21 -18 SVO
-61   2431154 1944-03-04 2431165 1944-03-15 -11 AAVSO
-60 9.0 2431391 1944-10-27 2431402 1944-11-07 -11 AAVSO
-59 9.0 2431633 1945-06-26 2431640 1945-07-03 -7 SVO
-58 8.5 2431879 1946-02-27 2431877 1946-02-25 2 AAVSO
-57 8.4 2432106 1946-10-12 2432115 1946-10-21 -9 SVO
-56 9.1 2432346 1947-06-09 2432352 1947-06-15 -6 SVO
-55 8.4 2432572 1948-01-21 2432590 1948-02-08 -18 AAVSO
-54 8.8 2432817 1948-09-22 2432827 1948-10-02 -10 SVO
-53 8.8 2433060 1949-05-23 2433065 1949-05-28 -5 SVO
-52 8.5 2433306 1950-01-24 2433302 1950-01-20 4 AAVSO
-51 8.4 2433540 1950-09-15 2433540 1950-09-15 0 SVO
-50 9.0 2433778 1951-05-11 2433777 1951-05-10 1 SVO
-49 8.6 2434019 1952-01-07 2434015 1952-01-03 4 AAVSO
-48 8.7 2434254 1952-08-29 2434252 1952-08-27 2 SVO
-47 9.0 2434500 1953-05-02 2434490 1953-04-22 10 SVO
-46   2434729 1953-12-17 2434727 1953-12-15 2 AAVSO
-45 8.4 2434966 1954-08-11 2434965 1954-08-10 1 SVO
-44 8.9 2435208 1955-04-10 2435202 1955-04-04 6 SVO
-43   2435441 1955-11-29 2435440 1955-11-28 1 AAVSO
-42 9.5 2435681 1956-07-26 2435677 1956-07-22 4 SVO
-41 8.4 2435918 1957-03-20 2435915 1957-03-17 3 AAVSO
-40 9.3 2436146 1957-11-03 2436152 1957-11-09 -6 AAVSO
-39 9.0 2436397 1958-07-12 2436390 1958-07-05 7 SVO
-38 7.6 2436627 1959-02-27 2436627 1959-02-27 0 AAVSO
-37 9.0 2436870 1959-10-28 2436865 1959-10-23 5 AAVSO
-36 9.4 2437102 1960-06-16 2437102 1960-06-16 0 SVO
-35 7.8 2437339 1961-02-08 2437340 1961-02-09 -1 AAVSO
-34 8.9 2437572 1961-09-29 2437577 1961-10-04 -5 AAVSO
-33 9.0 2437810 1962-05-25 2437815 1962-05-30 -5 SVO
-32 8.4 2438051 1963-01-21 2438052 1963-01-22 -1 AAVSO
-31 8.8 2438283 1963-09-10 2438290 1963-09-17 -7 AAVSO
-30 9.1 2438525 1964-05-09 2438527 1964-05-11 -2 SVO
-29 8.1 2438761 1964-12-31 2438765 1965-01-04 -4 AAVSO
-28 9.2 2439001 1965-08-28 2439002 1965-08-29 -1 SVO
-27 9.2 2439249 1966-05-03 2439240 1966-04-24 9 SVO
-26 8.6 2439474 1966-12-14 2439477 1966-12-17 -3 AAVSO
-25 8.5 2439721 1967-08-18 2439715 1967-08-12 6 SVO
-24 9.1 2439959 1968-04-12 2439952 1968-04-05 7 SVO
-23 8.5 2440190 1968-11-29 2440190 1968-11-29 0 AAVSO
-22 8.5 2440430 1969-07-27 2440427 1969-07-24 3 SVO
-21 9.0 2440670 1970-03-24 2440665 1970-03-19 5 SVO
-20 8.0 2440902 1970-11-11 2440902 1970-11-11 0 AAVSO
-19 8.3 2441137 1971-07-04 2441140 1971-07-07 -3 SVO
-18 8.4 2441382 1972-03-05 2441377 1972-02-29 5 SVO
-17 8.3 2441609 1972-10-18 2441615 1972-10-24 -6 SVO
-16 8.5 2441843 1973-06-09 2441852 1973-06-18 -9 SVO
-15 8.6 2442085 1974-02-06 2442090 1974-02-11 -5 SVO
-14 8.4 2442321 1974-09-30 2442327 1974-10-06 -6 SVO
-13 8.9 2442561 1975-05-28 2442565 1975-06-01 -4 SVO
-12 8.7 2442800 1976-01-22 2442802 1976-01-24 -2 SVO
-11 8.2 2443032 1976-09-10 2443040 1976-09-18 -8 SVO
-10 9.0 2443273 1977-05-09 2443277 1977-05-13 -4 SVO
-9 8.7 2443511 1978-01-02 2443515 1978-01-06 -4 SVO
-8 8.8 2443753 1978-09-01 2443752 1978-08-31 1 SVO
-7 8.4 2443995 1979-05-01 2443990 1979-04-26 5 SVO
-6 8.5 2444217 1979-12-09 2444227 1979-12-19 -10 SVO
-5 9.1 2444467 1980-08-15 2444465 1980-08-13 2 SVO
-4 9.0 2444706 1981-04-11 2444702 1981-04-07 4 SVO
-3 8.1 2444936 1981-11-27 2444940 1981-12-01 -4 SVO
-2 9.3 2445177 1982-07-26 2445177 1982-07-26 0 SVO
-1 8.5 2445409 1983-03-15 2445415 1983-03-21 -6 SVO
0 9.4 2445658 1983-11-19 2445652 1983-11-13 6 SVO
1 8.4 2445892 1984-07-10 2445890 1984-07-08 2 SVO
2 8.4 2446124 1985-02-27 2446127 1985-03-02 -3 SVO
3 9.0 2446363 1985-10-24 2446365 1985-10-26 -2 SVO
4 8.0 2446592 1986-06-10 2446602 1986-06-20 -10 SVO
5 8.8 2446830 1987-02-03 2446840 1987-02-13 -10 SVO
6 8.9 2447070 1987-10-01 2447077 1987-10-08 -7 SVO
7 8.4 2447308 1988-05-26 2447315 1988-06-02 -7 SVO
8 8.5 2447544 1989-01-17 2447552 1989-01-25 -8 SVO
9 8.3 2447783 1989-09-13 2447790 1989-09-20 -7 SVO
10 9.0 2448028 1990-05-16 2448027 1990-05-15 1 SVO
11   2448271 1991-01-14 2448265 1991-01-08 6 AAVSO
12 8.5 2448500 1991-08-31 2448502 1991-09-02 -2 SVO
13 8.8 2448741 1992-04-28 2448740 1992-04-27 1 SVO
14 8.5 2448971 1992-12-14 2448977 1992-12-20 -6 SVO
15 8.3 2449201 1993-08-01 2449215 1993-08-15 -14 SVO
16 9.6 2449441 1994-03-29 2449452 1994-04-09 -11 SVO
17 9.1 2449675 1994-11-18 2449690 1994-12-03 -15 SVO
18 8.5 2449905 1995-07-06 2449927 1995-07-28 -22 SVO
19 8.4 2450137 1996-02-23 2450165 1996-03-22 -28 SVO
20 8.4 2450383 1996-10-26 2450402 1996-11-14 -19 SVO
21 8.2 2450611 1997-06-11 2450640 1997-07-10 -29 SVO
22 8.9 2450849 1998-02-04 2450877 1998-03-04 -28 SVO
23 8.3 2451085 1998-09-28 2451115 1998-10-28 -30 SVO
24 9.2 2451322 1999-05-23 2451352 1999-06-22 -30 SVO
25 8.6 2451555 2000-01-11 2451590 2000-02-15 -35 SVO
26 8.8 2451795 2000-09-07 2451827 2000-10-09 -32 SVO
27 8.3 2452029 2001-04-29 2452065 2001-06-04 -36 SVO
28 9.0 2452264 2001-12-20 2452302 2002-01-27 -38 SVO
29 8.4 2452500 2002-08-13 2452540 2002-09-22 -40 SVO
30 8.9 2452740 2003-04-10 2452777 2003-05-17 -37 SVO
31 8.6 2452977 2003-12-03 2453015 2004-01-10 -38 SVO
32 8.3 2453211 2004-07-24 2453252 2004-09-03 -41 SVO
33 8.7 2453457 2005-03-27 2453490 2005-04-29 -33 SVO
34 8.8 2453693 2005-11-18 2453727 2005-12-22 -34 SVO
35 8.2 2453928 2006-07-11 2453965 2006-08-17 -37 SVO
36 8.5 2454160 2007-02-28 2454202 2007-04-11 -42 SVO
37 8.3 2454398 2007-10-24 2454440 2007-12-05 -42 SVO
38 9.2 2454644 2008-06-26 2454677 2008-07-29 -33 SVO
39 8.3 2454872 2009-02-09 2454915 2009-03-24 -43 SVO
40 9.0 2455119 2009-10-14 2455152 2009-11-16 -33 SVO
41 8.8 2455357 2010-06-09 2455390 2010-07-12 -33 SVO
42 8.8 2455602 2011-02-09 2455627 2011-03-06 -25 SVO
43 9.1 2455845 2011-10-10 2455865 2011-10-30 -20 SVO
44 8.2 2456074 2012-05-26 2456102 2012-06-23 -28 SVO
45 8.7 2456307 2013-01-14 2456340 2013-02-16 -33 AAVSO
46 8.6 2456552 2013-09-16 2456577 2013-10-11 -25 SVO
47 9.1 2456791 2014-05-13 2456815 2014-06-06 -24 SVO
48 8.7 2457021 2014-12-29 2457052 2015-01-29 -31 AAVSO
49 8.1 2457258 2015-08-23 2457290 2015-09-24 -32 SVO
50 9.0 2457507 2016-04-28 2457527 2016-05-18 -20 SVO
51 9.1 2457754 2016-12-31 2457765 2017-01-11 -11 SVO
52 8.3 2457980 2017-08-14 2458002 2017-09-05 -22 SVO
53 8.2 2458214 2018-04-05 2458240 2018-05-01 -26 SVO
54 9.0 2458458 2018-12-05 2458477 2018-12-24 -19 SVO
55 8.7 2458700 2019-08-04 2458715 2019-08-19 -15 SVO
56 8.3 2458931 2020-03-22 2458952 2020-04-12 -21 SVO
57 8.6 2459170 2020-11-16 2459190 2020-12-06 -20 SVO
58 8.6 2459416 2021-07-20 2459427 2021-07-31 -11 SVO
59 8.3 2459656 2022-03-17 2459665 2022-03-26 -9 SVO
60   2459890 2022-11-06 2459902 2022-11-18 -12 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.