Maxima for X Aqr
Period: 311.65, Epoch: 2439241
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-83   2413380 1895-07-05 2413374 1895-06-29 6 SVO
-82   2413690 1896-05-10 2413686 1896-05-06 4 SVO
-81   2414000 1897-03-16 2413997 1897-03-13 3 SVO
-80   2414283 1897-12-24 2414309 1898-01-19 -26 AnHar, 1909, vol 55, p 95
-79   2414639 1898-12-15 2414621 1898-11-27 18 AnHar, 1909, vol 55, p 95
-78   2414941 1899-10-13 2414932 1899-10-04 9 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-77   2415249 1900-08-17 2415244 1900-08-12 5 GuL, 1920, 1.2, AnHar, 1952, vol 115
-76   2415580 1901-07-14 2415556 1901-06-20 24 AnHar, 1952, vol 115
-75   2415890 1902-05-20 2415867 1902-04-27 23 AnHar, 1952, vol 115
-72 7.7 2416819 1904-12-04 2416802 1904-11-17 17 AAVSO
-71   2417132 1905-10-13 2417114 1905-09-25 18 SVO
-70   2417448 1906-08-25 2417426 1906-08-03 22 SVO
-69   2417770 1907-07-13 2417737 1907-06-10 33 SVO
-68   2418100 1908-06-07 2418049 1908-04-17 51 SVO
-67   2418422 1909-04-25 2418360 1909-02-22 62 AAVSO
-66   2418740 1910-03-09 2418672 1909-12-31 68 AAVSO
-65   2419030 1910-12-24 2418984 1910-11-08 46 AAVSO
-64   2419310 1911-09-30 2419295 1911-09-15 15 AnHar, 1952, vol 115
-63   2419615 1912-07-31 2419607 1912-07-23 8 SVO
-62   2419930 1913-06-11 2419919 1913-05-31 11 SVO
-59   2420842 1915-12-10 2420854 1915-12-22 -12 AAVSO
-58 7.9 2421149 1916-10-12 2421165 1916-10-28 -16 AAVSO
-57 8.4 2421456 1917-08-15 2421477 1917-09-05 -21 AAVSO
-56 8.9 2421774 1918-06-29 2421789 1918-07-14 -15 AAVSO
-54   2422371 1920-02-16 2422412 1920-03-28 -41 AAVSO
-53 8.7 2422686 1920-12-27 2422724 1921-02-03 -38 AAVSO
-52   2422990 1921-10-27 2423035 1921-12-11 -45 SVO
-51 7.7 2423295 1922-08-28 2423347 1922-10-19 -52 AAVSO
-50   2423605 1923-07-04 2423659 1923-08-27 -54 AAVSO
-45 8.2 2425180 1927-10-26 2425217 1927-12-02 -37 AAVSO
-44 7.9 2425484 1928-08-25 2425528 1928-10-08 -44 AAVSO
-43   2425810 1929-07-17 2425840 1929-08-16 -30 AAVSO
-42   2426130 1930-06-02 2426152 1930-06-24 -22 AnHar, 1952, vol 115
-41   2426460 1931-04-28 2426463 1931-05-01 -3 SVO
-39   2427050 1932-12-08 2427087 1933-01-14 -37 SVO
-38 8.6 2427378 1933-11-01 2427398 1933-11-21 -20 SVO
-37 8.8 2427692 1934-09-11 2427710 1934-09-29 -18 SVO
-36 8.8 2428000 1935-07-16 2428022 1935-08-07 -22 AAVSO
-35 7.8 2428303 1936-05-14 2428333 1936-06-13 -30 AAVSO
-34   2428614 1937-03-21 2428645 1937-04-21 -31 AAVSO
-33   2428930 1938-01-31 2428957 1938-02-27 -27 AAVSO
-32 8.2 2429249 1938-12-16 2429268 1939-01-04 -19 AAVSO
-31 7.8 2429549 1939-10-12 2429580 1939-11-12 -31 SVO
-30 7.9 2429862 1940-08-20 2429892 1940-09-19 -30 SVO
-29 8.0 2430181 1941-07-05 2430203 1941-07-27 -22 AAVSO
-28 8.9 2430483 1942-05-03 2430515 1942-06-04 -32 AAVSO
-27   2430788 1943-03-04 2430826 1943-04-11 -38 AAVSO
-26   2431116 1944-01-26 2431138 1944-02-17 -22 AAVSO
-25 8.6 2431441 1944-12-16 2431450 1944-12-25 -9 AAVSO
-24 7.5 2431749 1945-10-20 2431761 1945-11-01 -12 AAVSO
-23 9.0 2432069 1946-09-05 2432073 1946-09-09 -4 SVO
-22 8.8 2432383 1947-07-16 2432385 1947-07-18 -2 SVO
-21 7.7 2432687 1948-05-15 2432696 1948-05-24 -9 SVO
-20 8.8 2432997 1949-03-21 2433008 1949-04-01 -11 AAVSO
-19 8.1 2433307 1950-01-25 2433320 1950-02-07 -13 SVO
-18 8.0 2433626 1950-12-10 2433631 1950-12-15 -5 AAVSO
-17 7.9 2433927 1951-10-07 2433943 1951-10-23 -16 SVO
-16 8.6 2434241 1952-08-16 2434255 1952-08-30 -14 SVO
-15 8.4 2434559 1953-06-30 2434566 1953-07-07 -7 SVO
-14 8.0 2434867 1954-05-04 2434878 1954-05-15 -11 AAVSO
-13 8.1 2435181 1955-03-14 2435190 1955-03-23 -9 AAVSO
-12 8.0 2435493 1956-01-20 2435501 1956-01-28 -8 SVO
-11 8.7 2435804 1956-11-26 2435813 1956-12-05 -9 AAVSO
-10 7.7 2436102 1957-09-20 2436125 1957-10-13 -23 SVO
-9 8.4 2436424 1958-08-08 2436436 1958-08-20 -12 SVO
-8 8.8 2436745 1959-06-25 2436748 1959-06-28 -3 SVO
-7 9.6 2437052 1960-04-27 2437059 1960-05-04 -7 AAVSO
-6 8.0 2437362 1961-03-03 2437371 1961-03-12 -9 AAVSO
-5 8.8 2437690 1962-01-25 2437683 1962-01-18 7 AAVSO
-4 8.5 2437985 1962-11-16 2437994 1962-11-25 -9 SVO
-3 9.3 2438299 1963-09-26 2438306 1963-10-03 -7 SVO
-2 8.6 2438612 1964-08-04 2438618 1964-08-10 -6 SVO
-1 8.6 2438928 1965-06-16 2438929 1965-06-17 -1 SVO
0 7.8 2439234 1966-04-18 2439241 1966-04-25 -7 AAVSO
1   2439536 1967-02-14 2439553 1967-03-03 -17 AAVSO
2   2439845 1967-12-20 2439864 1968-01-08 -19 AAVSO
3 8.9 2440175 1968-11-14 2440176 1968-11-15 -1 SVO
4 8.3 2440499 1969-10-04 2440488 1969-09-23 11 SVO
5 8.4 2440802 1970-08-03 2440799 1970-07-31 3 AAVSO
6 8.6 2441112 1971-06-09 2441111 1971-06-08 1 AAVSO
7   2441423 1972-04-15 2441423 1972-04-15 0 AAVSO
8   2441763 1973-03-21 2441734 1973-02-20 29 AAVSO
9 7.7 2442072 1974-01-24 2442046 1973-12-29 26 AAVSO
10 8.0 2442382 1974-11-30 2442358 1974-11-06 24 SVO
11 8.7 2442699 1975-10-13 2442669 1975-09-13 30 SVO
12 8.0 2443008 1976-08-17 2442981 1976-07-21 27 SVO
13 9.6 2443316 1977-06-21 2443292 1977-05-28 24 AAVSO
14 9.0 2443630 1978-05-01 2443604 1978-04-05 26 AAVSO
15 9.5 2443919 1979-02-14 2443916 1979-02-11 3 AAVSO
16 8.4 2444242 1980-01-03 2444227 1979-12-19 15 AAVSO
17 8.3 2444548 1980-11-04 2444539 1980-10-26 9 SVO
18 8.5 2444861 1981-09-13 2444851 1981-09-03 10 SVO
19 8.6 2445165 1982-07-14 2445162 1982-07-11 3 SVO
20 8.4 2445479 1983-05-24 2445474 1983-05-19 5 AAVSO
21 7.8 2445783 1984-03-23 2445786 1984-03-26 -3 AAVSO
22 9.4 2446095 1985-01-29 2446097 1985-01-31 -2 AAVSO
23 8.7 2446406 1985-12-06 2446409 1985-12-09 -3 AAVSO
24 8.1 2446711 1986-10-07 2446721 1986-10-17 -10 SVO
25 8.3 2447021 1987-08-13 2447032 1987-08-24 -11 SVO
26 8.3 2447332 1988-06-19 2447344 1988-07-01 -12 SVO
27   2447648 1989-05-01 2447656 1989-05-09 -8 AAVSO
28   2447961 1990-03-10 2447967 1990-03-16 -6 AAVSO
29 8.6 2448276 1991-01-19 2448279 1991-01-22 -3 SVO
30   2448584 1991-11-23 2448591 1991-11-30 -7 AAVSO
31 8.5 2448908 1992-10-12 2448902 1992-10-06 6 SVO
32 8.2 2449215 1993-08-15 2449214 1993-08-14 1 SVO
33 7.9 2449525 1994-06-21 2449525 1994-06-21 0 SVO
34   2449825 1995-04-17 2449837 1995-04-29 -12 AAVSO
35   2450147 1996-03-04 2450149 1996-03-06 -2 AAVSO
36   2450453 1997-01-04 2450460 1997-01-11 -7 AAVSO
37 8.5 2450778 1997-11-25 2450772 1997-11-19 6 SVO
38 9.1 2451084 1998-09-27 2451084 1998-09-27 0 SVO
39 8.6 2451391 1999-07-31 2451395 1999-08-04 -4 SVO
40 8.1 2451707 2000-06-11 2451707 2000-06-11 0 SVO
41   2452022 2001-04-22 2452019 2001-04-19 3 AAVSO
42   2452322 2002-02-16 2452330 2002-02-24 -8 AAVSO
43 8.7 2452648 2003-01-08 2452642 2003-01-02 6 SVO
44 7.6 2452951 2003-11-07 2452954 2003-11-10 -3 SVO
45 9.3 2453263 2004-09-14 2453265 2004-09-16 -2 SVO
46 8.2 2453571 2005-07-19 2453577 2005-07-25 -6 SVO
47 8.5 2453892 2006-06-05 2453889 2006-06-02 3 SVO
48   2454198 2007-04-07 2454200 2007-04-09 -2 AAVSO
49   2454510 2008-02-13 2454512 2008-02-15 -2 AAVSO
50 8.4 2454816 2008-12-15 2454824 2008-12-23 -8 SVO
51 8.2 2455124 2009-10-19 2455135 2009-10-30 -11 SVO
52 8.3 2455443 2010-09-03 2455447 2010-09-07 -4 SVO
53 8.3 2455754 2011-07-11 2455758 2011-07-15 -4 SVO
54 8.5 2456066 2012-05-18 2456070 2012-05-22 -4 AAVSO
55 8.5 2456375 2013-03-23 2456382 2013-03-30 -7 AAVSO
56 7.6 2456691 2014-02-02 2456693 2014-02-04 -2 SVO
57 8.3 2456986 2014-11-24 2457005 2014-12-13 -19 SVO
58 8.3 2457308 2015-10-12 2457317 2015-10-21 -9 SVO
59 8.1 2457616 2016-08-15 2457628 2016-08-27 -12 SVO
60 8.8 2457931 2017-06-26 2457940 2017-07-05 -9 SVO
61   2458240 2018-05-01 2458252 2018-05-13 -12 SVO
62   2458560 2019-03-17 2458563 2019-03-20 -3 SVO
63 8.7 2458867 2020-01-18 2458875 2020-01-26 -8 SVO
64 7.9 2459172 2020-11-18 2459187 2020-12-03 -15 SVO
65 8.6 2459487 2021-09-29 2459498 2021-10-10 -11 SVO
66 8.2 2459800 2022-08-08 2459810 2022-08-18 -10 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.