Maxima for Z Cet
Period: 184.86, Epoch: 2441673.9
AAVSO offset: 4

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-135   2416734 1904-09-10 2416718 1904-08-25 16 AAVSO
-134   2416928 1905-03-23 2416903 1905-02-26 25 AAVSO
-133 9.0 2417100 1905-09-11 2417088 1905-08-30 12 AAVSO
-132   2417292 1906-03-22 2417273 1906-03-03 19 AAVSO
-131 8.8 2417467 1906-09-13 2417458 1906-09-04 9 AAVSO
-130   2417663 1907-03-28 2417643 1907-03-08 20 AAVSO
-129 8.4 2417844 1907-09-25 2417828 1907-09-09 16 AAVSO
-127 8.7 2418212 1908-09-27 2418197 1908-09-12 15 AAVSO
-125 8.5 2418575 1909-09-25 2418567 1909-09-17 8 AAVSO
-123 9.3 2418942 1910-09-27 2418937 1910-09-22 5 AAVSO
-121 9.1 2419302 1911-09-22 2419306 1911-09-26 -4 AAVSO
-119 8.4 2419672 1912-09-26 2419676 1912-09-30 -4 AAVSO
-117 8.6 2420035 1913-09-24 2420046 1913-10-05 -11 AAVSO
-115 9.1 2420406 1914-09-30 2420416 1914-10-10 -10 AAVSO
-114   2420588 1915-03-31 2420600 1915-04-12 -12 AAVSO
-113   2420762 1915-09-21 2420785 1915-10-14 -23 AAVSO
-112   2420949 1916-03-26 2420970 1916-04-16 -21 AAVSO
-111 9.0 2421135 1916-09-28 2421155 1916-10-18 -20 AAVSO
-110   2421312 1917-03-24 2421340 1917-04-21 -28 AAVSO
-109 8.8 2421494 1917-09-22 2421525 1917-10-23 -31 SVO
-108   2421686 1918-04-02 2421710 1918-04-26 -24 AAVSO
-107 8.7 2421870 1918-10-03 2421894 1918-10-27 -24 AAVSO
-105   2422228 1919-09-26 2422264 1919-11-01 -36 AN, 1920, vol 211, p 103
-104   2422420 1920-04-05 2422449 1920-05-04 -29 AAVSO
-103 8.9 2422602 1920-10-04 2422634 1920-11-05 -32 SVO
-101 8.9 2422979 1921-10-16 2423004 1921-11-10 -25 SVO
-99 8.8 2423345 1922-10-17 2423373 1922-11-14 -28 SVO
-98   2423516 1923-04-06 2423558 1923-05-18 -42 AAVSO
-97 8.6 2423714 1923-10-21 2423743 1923-11-19 -29 SVO
-95 8.7 2424096 1924-11-06 2424113 1924-11-23 -17 SVO
-93 8.9 2424476 1925-11-21 2424482 1925-11-27 -6 SVO
-92   2424655 1926-05-19 2424667 1926-05-31 -12 AAVSO
-91 8.6 2424835 1926-11-15 2424852 1926-12-02 -17 SVO
-89 9.1 2425208 1927-11-23 2425222 1927-12-07 -14 SVO
-88   2425394 1928-05-27 2425407 1928-06-09 -13 AAVSO
-87 8.9 2425581 1928-11-30 2425591 1928-12-10 -10 SVO
-86 8.8 2425770 1929-06-07 2425776 1929-06-13 -6 AAVSO
-85 8.6 2425951 1929-12-05 2425961 1929-12-15 -10 SVO
-84 8.6 2426140 1930-06-12 2426146 1930-06-18 -6 AAVSO
-83 8.6 2426324 1930-12-13 2426331 1930-12-20 -7 SVO
-82   2426504 1931-06-11 2426516 1931-06-23 -12 AAVSO
-81 8.9 2426696 1931-12-20 2426701 1931-12-25 -5 SVO
-80   2426876 1932-06-17 2426885 1932-06-26 -9 AAVSO
-79 8.7 2427061 1932-12-19 2427070 1932-12-28 -9 SVO
-78 9.3 2427253 1933-06-29 2427255 1933-07-01 -2 AAVSO
-77 8.9 2427426 1933-12-19 2427440 1934-01-02 -14 SVO
-76   2427597 1934-06-08 2427625 1934-07-06 -28 AAVSO
-75 8.6 2427795 1934-12-23 2427810 1935-01-07 -15 SVO
-74 8.8 2427987 1935-07-03 2427995 1935-07-11 -8 AAVSO
-73 9.3 2428167 1935-12-30 2428179 1936-01-11 -12 SVO
-72   2428348 1936-06-28 2428364 1936-07-14 -16 AAVSO
-71 8.9 2428528 1936-12-25 2428549 1937-01-15 -21 SVO
-70 8.8 2428725 1937-07-10 2428734 1937-07-19 -9 AAVSO
-69 9.0 2428901 1938-01-02 2428919 1938-01-20 -18 SVO
-68   2429095 1938-07-15 2429104 1938-07-24 -9 AAVSO
-67 9.3 2429278 1939-01-14 2429289 1939-01-25 -11 SVO
-66 9.1 2429456 1939-07-11 2429473 1939-07-28 -17 AAVSO
-65 8.7 2429641 1940-01-12 2429658 1940-01-29 -17 SVO
-64 8.8 2429829 1940-07-18 2429843 1940-08-01 -14 SVO
-63 8.8 2430016 1941-01-21 2430028 1941-02-02 -12 AAVSO
-62 9.7 2430208 1941-08-01 2430213 1941-08-06 -5 SVO
-61 9.0 2430394 1942-02-03 2430398 1942-02-07 -4 AAVSO
-60 8.9 2430583 1942-08-11 2430583 1942-08-11 0 AAVSO
-59 9.6 2430772 1943-02-16 2430767 1943-02-11 5 AAVSO
-58 8.8 2430949 1943-08-12 2430952 1943-08-15 -3 SVO
-57 8.9 2431134 1944-02-13 2431137 1944-02-16 -3 AAVSO
-56 8.7 2431317 1944-08-14 2431322 1944-08-19 -5 SVO
-55 9.0 2431504 1945-02-17 2431507 1945-02-20 -3 AAVSO
-54 9.1 2431694 1945-08-26 2431692 1945-08-24 2 SVO
-53 8.7 2431873 1946-02-21 2431877 1946-02-25 -4 AAVSO
-52 9.4 2432071 1946-09-07 2432061 1946-08-28 10 SVO
-51   2432244 1947-02-27 2432246 1947-03-01 -2 AAVSO
-50 9.1 2432438 1947-09-09 2432431 1947-09-02 7 SVO
-49   2432627 1948-03-16 2432616 1948-03-05 11 AAVSO
-48 9.2 2432818 1948-09-23 2432801 1948-09-06 17 SVO
-47   2432999 1949-03-23 2432986 1949-03-10 13 AAVSO
-46 9.0 2433187 1949-09-27 2433171 1949-09-11 16 SVO
-45   2433372 1950-03-31 2433355 1950-03-14 17 AAVSO
-44 8.6 2433556 1950-10-01 2433540 1950-09-15 16 SVO
-43   2433744 1951-04-07 2433725 1951-03-19 19 AAVSO
-42 9.2 2433928 1951-10-08 2433910 1951-09-20 18 SVO
-41   2434111 1952-04-08 2434095 1952-03-23 16 AAVSO
-40 9.2 2434299 1952-10-13 2434280 1952-09-24 19 SVO
-39   2434481 1953-04-13 2434465 1953-03-28 16 AAVSO
-38 8.8 2434658 1953-10-07 2434649 1953-09-28 9 SVO
-37   2434841 1954-04-08 2434834 1954-04-01 7 AAVSO
-36 9.2 2435030 1954-10-14 2435019 1954-10-03 11 SVO
-35   2435213 1955-04-15 2435204 1955-04-06 9 AAVSO
-34 9.7 2435404 1955-10-23 2435389 1955-10-08 15 SVO
-33   2435600 1956-05-06 2435574 1956-04-10 26 AAVSO
-32 9.0 2435774 1956-10-27 2435759 1956-10-12 15 SVO
-31   2435961 1957-05-02 2435943 1957-04-14 18 AAVSO
-30 8.7 2436144 1957-11-01 2436128 1957-10-16 16 SVO
-29   2436321 1958-04-27 2436313 1958-04-19 8 AAVSO
-28 9.0 2436522 1958-11-14 2436498 1958-10-21 24 SVO
-27   2436702 1959-05-13 2436683 1959-04-24 19 AAVSO
-26 8.8 2436893 1959-11-20 2436868 1959-10-26 25 SVO
-25 9.3 2437074 1960-05-19 2437053 1960-04-28 21 AAVSO
-24 9.0 2437260 1960-11-21 2437237 1960-10-29 23 SVO
-23 8.8 2437445 1961-05-25 2437422 1961-05-02 23 AAVSO
-22 9.1 2437622 1961-11-18 2437607 1961-11-03 15 SVO
-21 8.8 2437815 1962-05-30 2437792 1962-05-07 23 AAVSO
-20 9.5 2437992 1962-11-23 2437977 1962-11-08 15 SVO
-19   2438179 1963-05-29 2438162 1963-05-12 17 AAVSO
-18 8.8 2438354 1963-11-20 2438346 1963-11-12 8 SVO
-17   2438538 1964-05-22 2438531 1964-05-15 7 AAVSO
-16 8.8 2438715 1964-11-15 2438716 1964-11-16 -1 SVO
-15 8.7 2438907 1965-05-26 2438901 1965-05-20 6 AAVSO
-14 9.0 2439091 1965-11-26 2439086 1965-11-21 5 SVO
-13 8.7 2439269 1966-05-23 2439271 1966-05-25 -2 AAVSO
-12 9.3 2439456 1966-11-26 2439456 1966-11-26 0 SVO
-11 8.9 2439651 1967-06-09 2439640 1967-05-29 11 AAVSO
-10 9.1 2439832 1967-12-07 2439825 1967-11-30 7 SVO
-9 8.7 2440014 1968-06-06 2440010 1968-06-02 4 AAVSO
-8 8.8 2440202 1968-12-11 2440195 1968-12-04 7 SVO
-7 8.9 2440386 1969-06-13 2440380 1969-06-07 6 AAVSO
-6 8.7 2440575 1969-12-19 2440565 1969-12-09 10 SVO
-5 8.9 2440759 1970-06-21 2440750 1970-06-12 9 SVO
-4 9.0 2440946 1970-12-25 2440934 1970-12-13 12 SVO
-3 9.0 2441134 1971-07-01 2441119 1971-06-16 15 AAVSO
-2 8.8 2441314 1971-12-28 2441304 1971-12-18 10 SVO
-1 9.2 2441506 1972-07-07 2441489 1972-06-20 17 AAVSO
0 8.9 2441691 1973-01-08 2441674 1972-12-22 17 SVO
1 8.9 2441872 1973-07-08 2441859 1973-06-25 13 AAVSO
2 8.5 2442063 1974-01-15 2442044 1973-12-27 19 SVO
3 9.0 2442245 1974-07-16 2442228 1974-06-29 17 AAVSO
4 9.2 2442433 1975-01-20 2442413 1974-12-31 20 AAVSO
5 8.9 2442619 1975-07-25 2442598 1975-07-04 21 AAVSO
6 9.0 2442804 1976-01-26 2442783 1976-01-05 21 AAVSO
7 9.0 2442985 1976-07-25 2442968 1976-07-08 17 AAVSO
8 9.3 2443179 1977-02-04 2443153 1977-01-09 26 AAVSO
9 9.3 2443367 1977-08-11 2443338 1977-07-13 29 SVO
10 8.9 2443553 1978-02-13 2443522 1978-01-13 31 SVO
11 9.3 2443739 1978-08-18 2443707 1978-07-17 32 SVO
12 8.7 2443924 1979-02-19 2443892 1979-01-18 32 AAVSO
13 8.9 2444106 1979-08-20 2444077 1979-07-22 29 SVO
14 9.2 2444293 1980-02-23 2444262 1980-01-23 31 AAVSO
15 8.7 2444476 1980-08-24 2444447 1980-07-26 29 SVO
16 9.3 2444664 1981-02-28 2444632 1981-01-27 32 AAVSO
17 8.8 2444846 1981-08-29 2444816 1981-07-30 30 SVO
18 9.5 2445036 1982-03-07 2445001 1982-01-31 35 AAVSO
19 9.5 2445225 1982-09-12 2445186 1982-08-04 39 SVO
20 9.3 2445398 1983-03-04 2445371 1983-02-05 27 AAVSO
21 8.7 2445582 1983-09-04 2445556 1983-08-09 26 SVO
22 9.2 2445761 1984-03-01 2445741 1984-02-10 20 AAVSO
23 9.1 2445951 1984-09-07 2445926 1984-08-13 25 SVO
24 9.1 2446134 1985-03-09 2446110 1985-02-13 24 AAVSO
25 9.0 2446307 1985-08-29 2446295 1985-08-17 12 SVO
26 8.9 2446502 1986-03-12 2446480 1986-02-18 22 AAVSO
27 9.3 2446680 1986-09-06 2446665 1986-08-22 15 SVO
28 9.1 2446856 1987-03-01 2446850 1987-02-23 6 AAVSO
29 9.0 2447036 1987-08-28 2447035 1987-08-27 1 SVO
30   2447217 1988-02-25 2447220 1988-02-28 -3 AAVSO
31 8.7 2447395 1988-08-21 2447404 1988-08-30 -9 SVO
32   2447577 1989-02-19 2447589 1989-03-03 -12 AAVSO
33 8.9 2447765 1989-08-26 2447774 1989-09-04 -9 SVO
34   2447949 1990-02-26 2447959 1990-03-08 -10 AAVSO
35 8.9 2448136 1990-09-01 2448144 1990-09-09 -8 SVO
36   2448313 1991-02-25 2448329 1991-03-13 -16 AAVSO
37 8.8 2448498 1991-08-29 2448514 1991-09-14 -16 SVO
38   2448693 1992-03-11 2448698 1992-03-16 -5 AAVSO
39 9.2 2448875 1992-09-09 2448883 1992-09-17 -8 SVO
40   2449058 1993-03-11 2449068 1993-03-21 -10 AAVSO
41 8.6 2449243 1993-09-12 2449253 1993-09-22 -10 SVO
42   2449426 1994-03-14 2449438 1994-03-26 -12 AAVSO
43 9.2 2449618 1994-09-22 2449623 1994-09-27 -5 SVO
44   2449803 1995-03-26 2449808 1995-03-31 -5 AAVSO
45 9.5 2449997 1995-10-06 2449992 1995-10-01 5 SVO
46   2450174 1996-03-31 2450177 1996-04-03 -3 AAVSO
47 9.2 2450360 1996-10-03 2450362 1996-10-05 -2 SVO
48   2450548 1997-04-09 2450547 1997-04-08 1 AAVSO
49 8.9 2450728 1997-10-06 2450732 1997-10-10 -4 SVO
50   2450913 1998-04-09 2450917 1998-04-13 -4 AAVSO
51 9.3 2451106 1998-10-19 2451101 1998-10-14 5 SVO
52   2451289 1999-04-20 2451286 1999-04-17 3 AAVSO
53 9.0 2451475 1999-10-23 2451471 1999-10-19 4 SVO
54   2451656 2000-04-21 2451656 2000-04-21 0 AAVSO
55 9.2 2451849 2000-10-31 2451841 2000-10-23 8 SVO
56   2452027 2001-04-27 2452026 2001-04-26 1 AAVSO
57 9.1 2452217 2001-11-03 2452211 2001-10-28 6 SVO
58   2452389 2002-04-24 2452395 2002-04-30 -6 AAVSO
59 8.8 2452572 2002-10-24 2452580 2002-11-01 -8 SVO
60   2452760 2003-04-30 2452765 2003-05-05 -5 AAVSO
61 9.2 2452941 2003-10-28 2452950 2003-11-06 -9 SVO
62   2453128 2004-05-02 2453135 2004-05-09 -7 AAVSO
63 9.2 2453312 2004-11-02 2453320 2004-11-10 -8 SVO
64   2453493 2005-05-02 2453505 2005-05-14 -12 AAVSO
65 8.8 2453678 2005-11-03 2453689 2005-11-14 -11 SVO
66   2453861 2006-05-05 2453874 2006-05-18 -13 AAVSO
67 8.9 2454040 2006-10-31 2454059 2006-11-19 -19 SVO
68   2454222 2007-05-01 2454244 2007-05-23 -22 AAVSO
69 9.6 2454411 2007-11-06 2454429 2007-11-24 -18 SVO
70   2454600 2008-05-13 2454614 2008-05-27 -14 AAVSO
71 9.6 2454787 2008-11-16 2454799 2008-11-28 -12 SVO
72   2454969 2009-05-17 2454983 2009-05-31 -14 AAVSO
73 8.8 2455148 2009-11-12 2455168 2009-12-02 -20 SVO
74   2455333 2010-05-16 2455353 2010-06-05 -20 AAVSO
75 9.1 2455518 2010-11-17 2455538 2010-12-07 -20 SVO
76   2455701 2011-05-19 2455723 2011-06-10 -22 AAVSO
77 8.9 2455895 2011-11-29 2455908 2011-12-12 -13 SVO
78   2456078 2012-05-30 2456093 2012-06-14 -15 AAVSO
79 8.9 2456262 2012-11-30 2456277 2012-12-15 -15 SVO
80   2456446 2013-06-02 2456462 2013-06-18 -16 AAVSO
81 8.9 2456630 2013-12-03 2456647 2013-12-20 -17 SVO
82   2456812 2014-06-03 2456832 2014-06-23 -20 AAVSO
83 9.5 2457009 2014-12-17 2457017 2014-12-25 -8 SVO
84 9.0 2457196 2015-06-22 2457202 2015-06-28 -6 SVO
85 8.9 2457379 2015-12-22 2457387 2015-12-30 -8 SVO
86 8.9 2457566 2016-06-26 2457571 2016-07-01 -5 SVO
87 9.1 2457749 2016-12-26 2457756 2017-01-02 -7 SVO
88 9.3 2457933 2017-06-28 2457941 2017-07-06 -8 AAVSO
89 9.0 2458109 2017-12-21 2458126 2018-01-07 -17 SVO
90 8.9 2458297 2018-06-27 2458311 2018-07-11 -14 SVO
91 8.9 2458484 2018-12-31 2458496 2019-01-12 -12 SVO
92 9.0 2458673 2019-07-08 2458681 2019-07-16 -8 SVO
93 9.2 2458853 2020-01-04 2458865 2020-01-16 -12 SVO
94 8.7 2459027 2020-06-26 2459050 2020-07-19 -23 SVO
95 9.2 2459215 2020-12-31 2459235 2021-01-20 -20 SVO
96 8.8 2459398 2021-07-02 2459420 2021-07-24 -22 SVO
97 9.1 2459587 2022-01-07 2459605 2022-01-25 -18 SVO
98 8.9 2459775 2022-07-14 2459790 2022-07-29 -15 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.