Maxima for X Aqr
Period: 311.4, Epoch: 2452951
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-127   2413380 1895-07-05 2413403 1895-07-28 -23 SVO
-126   2413690 1896-05-10 2413715 1896-06-04 -25 SVO
-125   2414000 1897-03-16 2414026 1897-04-11 -26 SVO
-124   2414283 1897-12-24 2414337 1898-02-16 -54 AnHar, 1909, vol 55, p 95
-123   2414639 1898-12-15 2414649 1898-12-25 -10 AnHar, 1909, vol 55, p 95
-122   2414941 1899-10-13 2414960 1899-11-01 -19 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-121   2415249 1900-08-17 2415272 1900-09-09 -23 GuL, 1920, 1.2, AnHar, 1952, vol 115
-120   2415580 1901-07-14 2415583 1901-07-17 -3 AnHar, 1952, vol 115
-119   2415890 1902-05-20 2415894 1902-05-24 -4 AnHar, 1952, vol 115
-116 7.7 2416819 1904-12-04 2416829 1904-12-14 -10 AAVSO
-115   2417132 1905-10-13 2417140 1905-10-21 -8 SVO
-114   2417448 1906-08-25 2417451 1906-08-28 -3 SVO
-113   2417770 1907-07-13 2417763 1907-07-06 7 SVO
-112   2418100 1908-06-07 2418074 1908-05-12 26 SVO
-111   2418422 1909-04-25 2418386 1909-03-20 36 AAVSO
-110   2418740 1910-03-09 2418697 1910-01-25 43 AAVSO
-109   2419030 1910-12-24 2419008 1910-12-02 22 AAVSO
-108   2419310 1911-09-30 2419320 1911-10-10 -10 AnHar, 1952, vol 115
-107   2419615 1912-07-31 2419631 1912-08-16 -16 SVO
-106   2419930 1913-06-11 2419943 1913-06-24 -13 SVO
-103   2420842 1915-12-10 2420877 1916-01-14 -35 AAVSO
-102 7.9 2421149 1916-10-12 2421188 1916-11-20 -39 AAVSO
-101 8.4 2421456 1917-08-15 2421500 1917-09-28 -44 AAVSO
-100 8.9 2421774 1918-06-29 2421811 1918-08-05 -37 AAVSO
-98   2422371 1920-02-16 2422434 1920-04-19 -63 AAVSO
-97 8.7 2422686 1920-12-27 2422745 1921-02-24 -59 AAVSO
-96   2422990 1921-10-27 2423057 1922-01-02 -67 SVO
-95 7.7 2423295 1922-08-28 2423368 1922-11-09 -73 AAVSO
-94   2423605 1923-07-04 2423679 1923-09-16 -74 AAVSO
-89 8.2 2425180 1927-10-26 2425236 1927-12-21 -56 AAVSO
-88 7.9 2425484 1928-08-25 2425548 1928-10-28 -64 AAVSO
-87   2425810 1929-07-17 2425859 1929-09-04 -49 AAVSO
-86   2426130 1930-06-02 2426171 1930-07-13 -41 AnHar, 1952, vol 115
-85   2426460 1931-04-28 2426482 1931-05-20 -22 SVO
-83   2427050 1932-12-08 2427105 1933-02-01 -55 SVO
-82 8.6 2427378 1933-11-01 2427416 1933-12-09 -38 SVO
-81 8.8 2427692 1934-09-11 2427728 1934-10-17 -36 SVO
-80 8.8 2428000 1935-07-16 2428039 1935-08-24 -39 AAVSO
-79 7.8 2428303 1936-05-14 2428350 1936-06-30 -47 AAVSO
-78   2428614 1937-03-21 2428662 1937-05-08 -48 AAVSO
-77   2428930 1938-01-31 2428973 1938-03-15 -43 AAVSO
-76 8.2 2429249 1938-12-16 2429285 1939-01-21 -36 AAVSO
-75 7.8 2429549 1939-10-12 2429596 1939-11-28 -47 SVO
-74 7.9 2429862 1940-08-20 2429907 1940-10-04 -45 SVO
-73 8.0 2430181 1941-07-05 2430219 1941-08-12 -38 AAVSO
-72 8.9 2430483 1942-05-03 2430530 1942-06-19 -47 AAVSO
-71   2430788 1943-03-04 2430842 1943-04-27 -54 AAVSO
-70   2431116 1944-01-26 2431153 1944-03-03 -37 AAVSO
-69 8.6 2431441 1944-12-16 2431464 1945-01-08 -23 AAVSO
-68 7.5 2431749 1945-10-20 2431776 1945-11-16 -27 AAVSO
-67 9.0 2432069 1946-09-05 2432087 1946-09-23 -18 SVO
-66 8.8 2432383 1947-07-16 2432399 1947-08-01 -16 SVO
-65 7.7 2432687 1948-05-15 2432710 1948-06-07 -23 SVO
-64 8.8 2432997 1949-03-21 2433021 1949-04-14 -24 AAVSO
-63 8.1 2433307 1950-01-25 2433333 1950-02-20 -26 SVO
-62 8.0 2433626 1950-12-10 2433644 1950-12-28 -18 AAVSO
-61 7.9 2433927 1951-10-07 2433956 1951-11-05 -29 SVO
-60 8.6 2434241 1952-08-16 2434267 1952-09-11 -26 SVO
-59 8.4 2434559 1953-06-30 2434578 1953-07-19 -19 SVO
-58 8.0 2434867 1954-05-04 2434890 1954-05-27 -23 AAVSO
-57 8.1 2435181 1955-03-14 2435201 1955-04-03 -20 AAVSO
-56 8.0 2435493 1956-01-20 2435513 1956-02-09 -20 SVO
-55 8.7 2435804 1956-11-26 2435824 1956-12-16 -20 AAVSO
-54 7.7 2436102 1957-09-20 2436135 1957-10-23 -33 SVO
-53 8.4 2436424 1958-08-08 2436447 1958-08-31 -23 SVO
-52 8.8 2436745 1959-06-25 2436758 1959-07-08 -13 SVO
-51 9.6 2437052 1960-04-27 2437070 1960-05-15 -18 AAVSO
-50 8.0 2437362 1961-03-03 2437381 1961-03-22 -19 AAVSO
-49 8.8 2437690 1962-01-25 2437692 1962-01-27 -2 AAVSO
-48 8.5 2437985 1962-11-16 2438004 1962-12-05 -19 SVO
-47 9.3 2438299 1963-09-26 2438315 1963-10-12 -16 SVO
-46 8.6 2438612 1964-08-04 2438627 1964-08-19 -15 SVO
-45 8.6 2438928 1965-06-16 2438938 1965-06-26 -10 SVO
-44 7.8 2439234 1966-04-18 2439249 1966-05-03 -15 AAVSO
-43   2439536 1967-02-14 2439561 1967-03-11 -25 AAVSO
-42   2439845 1967-12-20 2439872 1968-01-16 -27 AAVSO
-41 8.9 2440175 1968-11-14 2440184 1968-11-23 -9 SVO
-40 8.3 2440499 1969-10-04 2440495 1969-09-30 4 SVO
-39 8.4 2440802 1970-08-03 2440806 1970-08-07 -4 AAVSO
-38 8.6 2441112 1971-06-09 2441118 1971-06-15 -6 AAVSO
-37   2441423 1972-04-15 2441429 1972-04-21 -6 AAVSO
-36   2441763 1973-03-21 2441741 1973-02-27 22 AAVSO
-35 7.7 2442072 1974-01-24 2442052 1974-01-04 20 AAVSO
-34 8.0 2442382 1974-11-30 2442363 1974-11-11 19 SVO
-33 8.7 2442699 1975-10-13 2442675 1975-09-19 24 SVO
-32 8.0 2443008 1976-08-17 2442986 1976-07-26 22 SVO
-31 9.6 2443316 1977-06-21 2443298 1977-06-03 18 AAVSO
-30 9.0 2443630 1978-05-01 2443609 1978-04-10 21 AAVSO
-29 9.5 2443919 1979-02-14 2443920 1979-02-15 -1 AAVSO
-28 8.4 2444242 1980-01-03 2444232 1979-12-24 10 AAVSO
-27 8.3 2444548 1980-11-04 2444543 1980-10-30 5 SVO
-26 8.5 2444861 1981-09-13 2444855 1981-09-07 6 SVO
-25 8.6 2445165 1982-07-14 2445166 1982-07-15 -1 SVO
-24 8.4 2445479 1983-05-24 2445477 1983-05-22 2 AAVSO
-23 7.8 2445783 1984-03-23 2445789 1984-03-29 -6 AAVSO
-22 9.4 2446095 1985-01-29 2446100 1985-02-03 -5 AAVSO
-21 8.7 2446406 1985-12-06 2446412 1985-12-12 -6 AAVSO
-20 8.1 2446711 1986-10-07 2446723 1986-10-19 -12 SVO
-19 8.3 2447021 1987-08-13 2447034 1987-08-26 -13 SVO
-18 8.3 2447332 1988-06-19 2447346 1988-07-03 -14 SVO
-17   2447648 1989-05-01 2447657 1989-05-10 -9 AAVSO
-16   2447961 1990-03-10 2447969 1990-03-18 -8 AAVSO
-15 8.6 2448276 1991-01-19 2448280 1991-01-23 -4 SVO
-14   2448584 1991-11-23 2448591 1991-11-30 -7 AAVSO
-13 8.5 2448908 1992-10-12 2448903 1992-10-07 5 SVO
-12 8.2 2449215 1993-08-15 2449214 1993-08-14 1 SVO
-11 7.9 2449525 1994-06-21 2449526 1994-06-22 -1 SVO
-10   2449825 1995-04-17 2449837 1995-04-29 -12 AAVSO
-9   2450147 1996-03-04 2450148 1996-03-05 -1 AAVSO
-8   2450453 1997-01-04 2450460 1997-01-11 -7 AAVSO
-7 8.5 2450778 1997-11-25 2450771 1997-11-18 7 SVO
-6 9.1 2451084 1998-09-27 2451083 1998-09-26 1 SVO
-5 8.6 2451391 1999-07-31 2451394 1999-08-03 -3 SVO
-4 8.1 2451707 2000-06-11 2451705 2000-06-09 2 SVO
-3   2452022 2001-04-22 2452017 2001-04-17 5 AAVSO
-2   2452322 2002-02-16 2452328 2002-02-22 -6 AAVSO
-1 8.7 2452648 2003-01-08 2452640 2002-12-31 8 SVO
0 7.6 2452951 2003-11-07 2452951 2003-11-07 0 SVO
1 9.3 2453263 2004-09-14 2453262 2004-09-13 1 SVO
2 8.2 2453571 2005-07-19 2453574 2005-07-22 -3 SVO
3 8.5 2453892 2006-06-05 2453885 2006-05-29 7 SVO
4   2454198 2007-04-07 2454197 2007-04-06 1 AAVSO
5   2454510 2008-02-13 2454508 2008-02-11 2 AAVSO
6 8.4 2454816 2008-12-15 2454819 2008-12-18 -3 SVO
7 8.2 2455124 2009-10-19 2455131 2009-10-26 -7 SVO
8 8.3 2455443 2010-09-03 2455442 2010-09-02 1 SVO
9 8.3 2455754 2011-07-11 2455754 2011-07-11 0 SVO
10 8.5 2456066 2012-05-18 2456065 2012-05-17 1 AAVSO
11 8.5 2456375 2013-03-23 2456376 2013-03-24 -1 AAVSO
12 7.6 2456691 2014-02-02 2456688 2014-01-30 3 SVO
13 8.3 2456986 2014-11-24 2456999 2014-12-07 -13 SVO
14 8.3 2457308 2015-10-12 2457311 2015-10-15 -3 SVO
15 8.1 2457616 2016-08-15 2457622 2016-08-21 -6 SVO
16 8.8 2457931 2017-06-26 2457933 2017-06-28 -2 SVO
17   2458240 2018-05-01 2458245 2018-05-06 -5 SVO
18   2458560 2019-03-17 2458556 2019-03-13 4 SVO
19 8.7 2458867 2020-01-18 2458868 2020-01-19 -1 SVO
20 7.9 2459172 2020-11-18 2459179 2020-11-25 -7 SVO
21 8.6 2459487 2021-09-29 2459490 2021-10-02 -3 SVO
22 8.2 2459800 2022-08-08 2459802 2022-08-10 -2 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.