Maxima for X Aqr
Period: 311.64, Epoch: 2452948.4
AAVSO offset: 2

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-127   2413380 1895-07-05 2413371 1895-06-26 9 SVO
-126   2413690 1896-05-10 2413682 1896-05-02 8 SVO
-125   2414000 1897-03-16 2413994 1897-03-10 6 SVO
-124   2414283 1897-12-24 2414306 1898-01-16 -23 AnHar, 1909, vol 55, p 95
-123   2414639 1898-12-15 2414617 1898-11-23 22 AnHar, 1909, vol 55, p 95
-122   2414941 1899-10-13 2414929 1899-10-01 12 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-121   2415249 1900-08-17 2415240 1900-08-08 9 GuL, 1920, 1.2, AnHar, 1952, vol 115
-120   2415580 1901-07-14 2415552 1901-06-16 28 AnHar, 1952, vol 115
-119   2415890 1902-05-20 2415864 1902-04-24 26 AnHar, 1952, vol 115
-116 7.7 2416819 1904-12-04 2416799 1904-11-14 20 AAVSO
-115   2417132 1905-10-13 2417110 1905-09-21 22 SVO
-114   2417448 1906-08-25 2417422 1906-07-30 26 SVO
-113   2417770 1907-07-13 2417734 1907-06-07 36 SVO
-112   2418100 1908-06-07 2418045 1908-04-13 55 SVO
-111   2418422 1909-04-25 2418357 1909-02-19 65 AAVSO
-110   2418740 1910-03-09 2418668 1909-12-27 72 AAVSO
-109   2419030 1910-12-24 2418980 1910-11-04 50 AAVSO
-108   2419310 1911-09-30 2419292 1911-09-12 18 AnHar, 1952, vol 115
-107   2419615 1912-07-31 2419603 1912-07-19 12 SVO
-106   2419930 1913-06-11 2419915 1913-05-27 15 SVO
-103   2420842 1915-12-10 2420850 1915-12-18 -8 AAVSO
-102 7.9 2421149 1916-10-12 2421162 1916-10-25 -13 AAVSO
-101 8.4 2421456 1917-08-15 2421473 1917-09-01 -17 AAVSO
-100 8.9 2421774 1918-06-29 2421785 1918-07-10 -11 AAVSO
-98   2422371 1920-02-16 2422408 1920-03-24 -37 AAVSO
-97 8.7 2422686 1920-12-27 2422720 1921-01-30 -34 AAVSO
-96   2422990 1921-10-27 2423031 1921-12-07 -41 SVO
-95 7.7 2423295 1922-08-28 2423343 1922-10-15 -48 AAVSO
-94   2423605 1923-07-04 2423655 1923-08-23 -50 AAVSO
-89 8.2 2425180 1927-10-26 2425213 1927-11-28 -33 AAVSO
-88 7.9 2425484 1928-08-25 2425524 1928-10-04 -40 AAVSO
-87   2425810 1929-07-17 2425836 1929-08-12 -26 AAVSO
-86   2426130 1930-06-02 2426148 1930-06-20 -18 AnHar, 1952, vol 115
-85   2426460 1931-04-28 2426459 1931-04-27 1 SVO
-83   2427050 1932-12-08 2427083 1933-01-10 -33 SVO
-82 8.6 2427378 1933-11-01 2427394 1933-11-17 -16 SVO
-81 8.8 2427692 1934-09-11 2427706 1934-09-25 -14 SVO
-80 8.8 2428000 1935-07-16 2428018 1935-08-03 -18 AAVSO
-79 7.8 2428303 1936-05-14 2428329 1936-06-09 -26 AAVSO
-78   2428614 1937-03-21 2428641 1937-04-17 -27 AAVSO
-77   2428930 1938-01-31 2428952 1938-02-22 -22 AAVSO
-76 8.2 2429249 1938-12-16 2429264 1938-12-31 -15 AAVSO
-75 7.8 2429549 1939-10-12 2429576 1939-11-08 -27 SVO
-74 7.9 2429862 1940-08-20 2429887 1940-09-14 -25 SVO
-73 8.0 2430181 1941-07-05 2430199 1941-07-23 -18 AAVSO
-72 8.9 2430483 1942-05-03 2430511 1942-05-31 -28 AAVSO
-71   2430788 1943-03-04 2430822 1943-04-07 -34 AAVSO
-70   2431116 1944-01-26 2431134 1944-02-13 -18 AAVSO
-69 8.6 2431441 1944-12-16 2431446 1944-12-21 -5 AAVSO
-68 7.5 2431749 1945-10-20 2431757 1945-10-28 -8 AAVSO
-67 9.0 2432069 1946-09-05 2432069 1946-09-05 0 SVO
-66 8.8 2432383 1947-07-16 2432380 1947-07-13 3 SVO
-65 7.7 2432687 1948-05-15 2432692 1948-05-20 -5 SVO
-64 8.8 2432997 1949-03-21 2433004 1949-03-28 -7 AAVSO
-63 8.1 2433307 1950-01-25 2433315 1950-02-02 -8 SVO
-62 8.0 2433626 1950-12-10 2433627 1950-12-11 -1 AAVSO
-61 7.9 2433927 1951-10-07 2433939 1951-10-19 -12 SVO
-60 8.6 2434241 1952-08-16 2434250 1952-08-25 -9 SVO
-59 8.4 2434559 1953-06-30 2434562 1953-07-03 -3 SVO
-58 8.0 2434867 1954-05-04 2434874 1954-05-11 -7 AAVSO
-57 8.1 2435181 1955-03-14 2435185 1955-03-18 -4 AAVSO
-56 8.0 2435493 1956-01-20 2435497 1956-01-24 -4 SVO
-55 8.7 2435804 1956-11-26 2435808 1956-11-30 -4 AAVSO
-54 7.7 2436102 1957-09-20 2436120 1957-10-08 -18 SVO
-53 8.4 2436424 1958-08-08 2436432 1958-08-16 -8 SVO
-52 8.8 2436745 1959-06-25 2436743 1959-06-23 2 SVO
-51 9.6 2437052 1960-04-27 2437055 1960-04-30 -3 AAVSO
-50 8.0 2437362 1961-03-03 2437367 1961-03-08 -5 AAVSO
-49 8.8 2437690 1962-01-25 2437678 1962-01-13 12 AAVSO
-48 8.5 2437985 1962-11-16 2437990 1962-11-21 -5 SVO
-47 9.3 2438299 1963-09-26 2438302 1963-09-29 -3 SVO
-46 8.6 2438612 1964-08-04 2438613 1964-08-05 -1 SVO
-45 8.6 2438928 1965-06-16 2438925 1965-06-13 3 SVO
-44 7.8 2439234 1966-04-18 2439236 1966-04-20 -2 AAVSO
-43   2439536 1967-02-14 2439548 1967-02-26 -12 AAVSO
-42   2439845 1967-12-20 2439860 1968-01-04 -15 AAVSO
-41 8.9 2440175 1968-11-14 2440171 1968-11-10 4 SVO
-40 8.3 2440499 1969-10-04 2440483 1969-09-18 16 SVO
-39 8.4 2440802 1970-08-03 2440795 1970-07-27 7 AAVSO
-38 8.6 2441112 1971-06-09 2441106 1971-06-03 6 AAVSO
-37   2441423 1972-04-15 2441418 1972-04-10 5 AAVSO
-36   2441763 1973-03-21 2441730 1973-02-16 33 AAVSO
-35 7.7 2442072 1974-01-24 2442041 1973-12-24 31 AAVSO
-34 8.0 2442382 1974-11-30 2442353 1974-11-01 29 SVO
-33 8.7 2442699 1975-10-13 2442664 1975-09-08 35 SVO
-32 8.0 2443008 1976-08-17 2442976 1976-07-16 32 SVO
-31 9.6 2443316 1977-06-21 2443288 1977-05-24 28 AAVSO
-30 9.0 2443630 1978-05-01 2443599 1978-03-31 31 AAVSO
-29 9.5 2443919 1979-02-14 2443911 1979-02-06 8 AAVSO
-28 8.4 2444242 1980-01-03 2444223 1979-12-15 19 AAVSO
-27 8.3 2444548 1980-11-04 2444534 1980-10-21 14 SVO
-26 8.5 2444861 1981-09-13 2444846 1981-08-29 15 SVO
-25 8.6 2445165 1982-07-14 2445157 1982-07-06 8 SVO
-24 8.4 2445479 1983-05-24 2445469 1983-05-14 10 AAVSO
-23 7.8 2445783 1984-03-23 2445781 1984-03-21 2 AAVSO
-22 9.4 2446095 1985-01-29 2446092 1985-01-26 3 AAVSO
-21 8.7 2446406 1985-12-06 2446404 1985-12-04 2 AAVSO
-20 8.1 2446711 1986-10-07 2446716 1986-10-12 -5 SVO
-19 8.3 2447021 1987-08-13 2447027 1987-08-19 -6 SVO
-18 8.3 2447332 1988-06-19 2447339 1988-06-26 -7 SVO
-17   2447648 1989-05-01 2447651 1989-05-04 -3 AAVSO
-16   2447961 1990-03-10 2447962 1990-03-11 -1 AAVSO
-15 8.6 2448276 1991-01-19 2448274 1991-01-17 2 SVO
-14   2448584 1991-11-23 2448585 1991-11-24 -1 AAVSO
-13 8.5 2448908 1992-10-12 2448897 1992-10-01 11 SVO
-12 8.2 2449215 1993-08-15 2449209 1993-08-09 6 SVO
-11 7.9 2449525 1994-06-21 2449520 1994-06-16 5 SVO
-10   2449825 1995-04-17 2449832 1995-04-24 -7 AAVSO
-9   2450147 1996-03-04 2450144 1996-03-01 3 AAVSO
-8   2450453 1997-01-04 2450455 1997-01-06 -2 AAVSO
-7 8.5 2450778 1997-11-25 2450767 1997-11-14 11 SVO
-6 9.1 2451084 1998-09-27 2451079 1998-09-22 5 SVO
-5 8.6 2451391 1999-07-31 2451390 1999-07-30 1 SVO
-4 8.1 2451707 2000-06-11 2451702 2000-06-06 5 SVO
-3   2452022 2001-04-22 2452013 2001-04-13 9 AAVSO
-2   2452322 2002-02-16 2452325 2002-02-19 -3 AAVSO
-1 8.7 2452648 2003-01-08 2452637 2002-12-28 11 SVO
0 7.6 2452951 2003-11-07 2452948 2003-11-04 3 SVO
1 9.3 2453263 2004-09-14 2453260 2004-09-11 3 SVO
2 8.2 2453571 2005-07-19 2453572 2005-07-20 -1 SVO
3 8.5 2453892 2006-06-05 2453883 2006-05-27 9 SVO
4   2454198 2007-04-07 2454195 2007-04-04 3 AAVSO
5   2454510 2008-02-13 2454507 2008-02-10 3 AAVSO
6 8.4 2454816 2008-12-15 2454818 2008-12-17 -2 SVO
7 8.2 2455124 2009-10-19 2455130 2009-10-25 -6 SVO
8 8.3 2455443 2010-09-03 2455441 2010-09-01 2 SVO
9 8.3 2455754 2011-07-11 2455753 2011-07-10 1 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 2457000 2014-12-08 -14 SVO
14 8.3 2457308 2015-10-12 2457311 2015-10-15 -3 SVO
15 8.1 2457616 2016-08-15 2457623 2016-08-22 -7 SVO
16 8.8 2457931 2017-06-26 2457935 2017-06-30 -4 SVO
17   2458240 2018-05-01 2458246 2018-05-07 -6 SVO
18   2458560 2019-03-17 2458558 2019-03-15 2 SVO
19 8.7 2458867 2020-01-18 2458869 2020-01-20 -2 SVO
20 7.9 2459172 2020-11-18 2459181 2020-11-27 -9 SVO
21 8.6 2459487 2021-09-29 2459493 2021-10-05 -6 SVO
22 8.2 2459800 2022-08-08 2459804 2022-08-12 -4 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.