Maxima for S Lac
Period: 241.5, Epoch: 2443804
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-131   2412386 1892-10-14 2412168 1892-03-10 218 SVO
-129   2412854 1894-01-25 2412651 1893-07-06 203 AnHar, 1909, vol 55, p 95
-128   2413089 1894-09-17 2412892 1894-03-04 197 AnHar, 1909, vol 55, p 95
-126   2413569 1896-01-10 2413375 1895-06-30 194 AnHar, 1909, vol 55, p 95
-125   2413801 1896-08-29 2413617 1896-02-27 184 AnHar, 1909, vol 55, p 95
-123   2414278 1897-12-19 2414100 1897-06-24 178 AnHar, 1909, vol 55, p 95
-122   2414519 1898-08-17 2414341 1898-02-20 178 AnHar, 1909, vol 55, p 95
-120   2415000 1899-12-11 2414824 1899-06-18 176 SVO
-119   2415235 1900-08-03 2415066 1900-02-15 169 SVO
-117   2415720 1901-12-01 2415549 1901-06-13 171 SVO
-116   2415960 1902-07-29 2415790 1902-02-09 170 AnHar, 1952, vol 118
-114   2416412 1903-10-24 2416273 1903-06-07 139 AnHar, 1909, vol 55, p 95
-113 8.1 2416645 1904-06-13 2416515 1904-02-04 130 AAVSO
-112   2416894 1905-02-17 2416756 1904-10-02 138 AAVSO
-111 8.3 2417130 1905-10-11 2416998 1905-06-01 132 AAVSO
-110   2417385 1906-06-23 2417239 1906-01-28 146 AAVSO
-109   2417629 1907-02-22 2417481 1906-09-27 148 AAVSO
-108 8.0 2417861 1907-10-12 2417722 1907-05-26 139 AAVSO
-107 8.3 2418099 1908-06-06 2417964 1908-01-23 135 AAVSO
-106 8.6 2418338 1909-01-31 2418205 1908-09-20 133 AAVSO
-105 7.7 2418575 1909-09-25 2418447 1909-05-20 128 SVO
-104 8.1 2418825 1910-06-02 2418688 1910-01-16 137 AAVSO
-103 8.8 2419059 1911-01-22 2418930 1910-09-15 129 SVO
-102 8.2 2419315 1911-10-05 2419171 1911-05-14 144 AAVSO
-101   2419559 1912-06-05 2419413 1912-01-11 146 AAVSO
-100 8.6 2419801 1913-02-02 2419654 1912-09-08 147 AAVSO
-99 7.9 2420039 1913-09-28 2419896 1913-05-08 143 SVO
-98   2420280 1914-05-27 2420137 1914-01-04 143 SVO
-97 8.4 2420513 1915-01-15 2420379 1914-09-03 134 AAVSO
-96 8.6 2420765 1915-09-24 2420620 1915-05-02 145 AAVSO
-95 8.2 2420985 1916-05-01 2420862 1915-12-30 123 AAVSO
-94 8.1 2421229 1916-12-31 2421103 1916-08-27 126 AAVSO
-93 8.3 2421485 1917-09-13 2421345 1917-04-26 140 SVO
-92 8.3 2421732 1918-05-18 2421586 1917-12-23 146 SVO
-91 8.1 2421979 1919-01-20 2421828 1918-08-22 151 AAVSO
-90 8.3 2422212 1919-09-10 2422069 1919-04-20 143 SVO
-89 8.2 2422457 1920-05-12 2422311 1919-12-18 146 AAVSO
-88 7.9 2422701 1921-01-11 2422552 1920-08-15 149 SVO
-87 8.5 2422943 1921-09-10 2422794 1921-04-14 149 SVO
-86 7.9 2423182 1922-05-07 2423035 1921-12-11 147 SVO
-85 8.1 2423419 1922-12-30 2423277 1922-08-10 142 SVO
-84 7.8 2423667 1923-09-04 2423518 1923-04-08 149 SVO
-83 7.8 2423898 1924-04-22 2423760 1923-12-06 138 AAVSO
-82 8.1 2424148 1924-12-28 2424001 1924-08-03 147 SVO
-81 8.5 2424393 1925-08-30 2424243 1925-04-02 150 SVO
-80 8.2 2424636 1926-04-30 2424484 1925-11-29 152 AAVSO
-79 8.1 2424880 1926-12-30 2424726 1926-07-29 154 SVO
-78 8.2 2425121 1927-08-28 2424967 1927-03-27 154 SVO
-77 8.2 2425367 1928-04-30 2425209 1927-11-24 158 AAVSO
-76 8.0 2425612 1928-12-31 2425450 1928-07-22 162 SVO
-75 8.9 2425859 1929-09-04 2425692 1929-03-21 167 SVO
-74 8.0 2426103 1930-05-06 2425933 1929-11-17 170 SVO
-73 7.7 2426333 1930-12-22 2426175 1930-07-17 158 SVO
-72 8.2 2426574 1931-08-20 2426416 1931-03-15 158 SVO
-71 8.3 2426823 1932-04-25 2426658 1931-11-12 165 SVO
-70 8.5 2427064 1932-12-22 2426899 1932-07-10 165 SVO
-69 8.0 2427305 1933-08-20 2427141 1933-03-09 164 SVO
-68 7.8 2427541 1934-04-13 2427382 1933-11-05 159 AAVSO
-67 7.8 2427786 1934-12-14 2427624 1934-07-05 162 SVO
-66 8.3 2428024 1935-08-09 2427865 1935-03-03 159 SVO
-65 8.2 2428259 1936-03-31 2428107 1935-10-31 152 AAVSO
-64 8.3 2428509 1936-12-06 2428348 1936-06-28 161 SVO
-63 8.6 2428752 1937-08-06 2428590 1937-02-25 162 SVO
-62 7.9 2428987 1938-03-29 2428831 1937-10-24 156 SVO
-61 8.4 2429221 1938-11-18 2429073 1938-06-23 148 SVO
-60 8.3 2429463 1939-07-18 2429314 1939-02-19 149 SVO
-59 8.5 2429699 1940-03-10 2429556 1939-10-19 143 AAVSO
-58 8.7 2429934 1940-10-31 2429797 1940-06-16 137 SVO
-57 8.2 2430169 1941-06-23 2430039 1941-02-13 130 AAVSO
-56 8.3 2430403 1942-02-12 2430280 1941-10-12 123 AAVSO
-55 7.8 2430636 1942-10-03 2430522 1942-06-11 114 SVO
-54 8.3 2430872 1943-05-27 2430763 1943-02-07 109 AAVSO
-53 8.7 2431117 1944-01-27 2431005 1943-10-07 112 SVO
-52 8.3 2431357 1944-09-23 2431246 1944-06-04 111 SVO
-51   2431595 1945-05-19 2431488 1945-02-01 107 AAVSO
-50 8.5 2431827 1946-01-06 2431729 1945-09-30 98 AAVSO
-49 8.0 2432062 1946-08-29 2431971 1946-05-30 91 SVO
-48   2432287 1947-04-11 2432212 1947-01-26 75 AAVSO
-47 8.0 2432524 1947-12-04 2432454 1947-09-25 70 SVO
-46 8.4 2432771 1948-08-07 2432695 1948-05-23 76 SVO
-45 8.0 2433017 1949-04-10 2432937 1949-01-20 80 AAVSO
-44 8.3 2433255 1949-12-04 2433178 1949-09-18 77 SVO
-43 8.8 2433498 1950-08-04 2433420 1950-05-18 78 SVO
-42   2433738 1951-04-01 2433661 1951-01-14 77 AAVSO
-41 8.1 2433962 1951-11-11 2433903 1951-09-13 59 SVO
-40 8.1 2434201 1952-07-07 2434144 1952-05-11 57 SVO
-39 8.7 2434447 1953-03-10 2434386 1953-01-08 61 AAVSO
-38 8.5 2434692 1953-11-10 2434627 1953-09-06 65 SVO
-37 7.9 2434926 1954-07-02 2434869 1954-05-06 57 AAVSO
-36 7.9 2435163 1955-02-24 2435110 1955-01-02 53 AAVSO
-35 8.2 2435398 1955-10-17 2435352 1955-09-01 46 SVO
-34 8.7 2435647 1956-06-22 2435593 1956-04-29 54 AAVSO
-33 8.2 2435879 1957-02-09 2435835 1956-12-27 44 SVO
-32 8.3 2436109 1957-09-27 2436076 1957-08-25 33 SVO
-31 8.6 2436352 1958-05-28 2436318 1958-04-24 34 AAVSO
-30 8.5 2436578 1959-01-09 2436559 1958-12-21 19 AAVSO
-29 8.2 2436827 1959-09-15 2436801 1959-08-20 26 SVO
-28   2437059 1960-05-04 2437042 1960-04-17 17 AAVSO
-27 8.4 2437295 1960-12-26 2437284 1960-12-15 11 SVO
-26 7.9 2437536 1961-08-24 2437525 1961-08-13 11 SVO
-25   2437772 1962-04-17 2437767 1962-04-12 5 AAVSO
-24 8.3 2438008 1962-12-09 2438008 1962-12-09 0 SVO
-23 8.3 2438253 1963-08-11 2438250 1963-08-08 3 SVO
-22 8.6 2438499 1964-04-13 2438491 1964-04-05 8 AAVSO
-21 8.7 2438744 1964-12-14 2438733 1964-12-03 11 SVO
-20 8.1 2438977 1965-08-04 2438974 1965-08-01 3 SVO
-19 8.2 2439221 1966-04-05 2439216 1966-03-31 5 AAVSO
-18 8.5 2439464 1966-12-04 2439457 1966-11-27 7 SVO
-17 8.3 2439702 1967-07-30 2439699 1967-07-27 3 SVO
-16 8.0 2439940 1968-03-24 2439940 1968-03-24 0 SVO
-15 8.2 2440180 1968-11-19 2440182 1968-11-21 -2 SVO
-14 8.2 2440423 1969-07-20 2440423 1969-07-20 0 SVO
-13 8.4 2440665 1970-03-19 2440665 1970-03-19 0 SVO
-12 8.6 2440916 1970-11-25 2440906 1970-11-15 10 SVO
-11 8.1 2441156 1971-07-23 2441148 1971-07-15 8 SVO
-10 8.8 2441401 1972-03-24 2441389 1972-03-12 12 SVO
-9 8.1 2441631 1972-11-09 2441631 1972-11-09 0 SVO
-8 8.5 2441875 1973-07-11 2441872 1973-07-08 3 SVO
-7 8.2 2442111 1974-03-04 2442114 1974-03-07 -3 SVO
-6 8.1 2442355 1974-11-03 2442355 1974-11-03 0 SVO
-5 8.7 2442598 1975-07-04 2442597 1975-07-03 1 SVO
-4 8.4 2442847 1976-03-09 2442838 1976-02-29 9 SVO
-3 8.5 2443089 1976-11-06 2443080 1976-10-28 9 SVO
-2 8.4 2443334 1977-07-09 2443321 1977-06-26 13 SVO
-1 7.9 2443569 1978-03-01 2443563 1978-02-23 6 SVO
0 8.0 2443806 1978-10-24 2443804 1978-10-22 2 SVO
1 8.0 2444050 1979-06-25 2444046 1979-06-21 4 SVO
2 8.7 2444293 1980-02-23 2444287 1980-02-17 6 SVO
3 8.1 2444536 1980-10-23 2444529 1980-10-16 7 SVO
4 8.4 2444775 1981-06-19 2444770 1981-06-14 5 SVO
5 8.3 2445013 1982-02-12 2445012 1982-02-11 1 SVO
6 8.3 2445253 1982-10-10 2445253 1982-10-10 0 SVO
7 8.4 2445491 1983-06-05 2445495 1983-06-09 -4 SVO
8 8.1 2445727 1984-01-27 2445736 1984-02-05 -9 SVO
9 8.3 2445964 1984-09-20 2445978 1984-10-04 -14 SVO
10 8.7 2446211 1985-05-25 2446219 1985-06-02 -8 SVO
11 8.2 2446447 1986-01-16 2446461 1986-01-30 -14 SVO
12 9.1 2446695 1986-09-21 2446702 1986-09-28 -7 SVO
13 8.3 2446939 1987-05-23 2446944 1987-05-28 -5 SVO
14 8.4 2447173 1988-01-12 2447185 1988-01-24 -12 SVO
15 8.2 2447412 1988-09-07 2447427 1988-09-22 -15 SVO
16 8.4 2447652 1989-05-05 2447668 1989-05-21 -16 SVO
17 8.2 2447888 1989-12-27 2447910 1990-01-18 -22 SVO
18 8.3 2448130 1990-08-26 2448151 1990-09-16 -21 SVO
19 8.0 2448357 1991-04-10 2448393 1991-05-16 -36 SVO
20 8.6 2448601 1991-12-10 2448634 1992-01-12 -33 SVO
21 8.6 2448842 1992-08-07 2448876 1992-09-10 -34 SVO
22 8.9 2449083 1993-04-05 2449117 1993-05-09 -34 SVO
23 8.7 2449332 1993-12-10 2449359 1994-01-06 -27 SVO
24 8.0 2449563 1994-07-29 2449600 1994-09-04 -37 SVO
25 8.7 2449798 1995-03-21 2449842 1995-05-04 -44 SVO
26 8.4 2450044 1995-11-22 2450083 1995-12-31 -39 SVO
27 8.0 2450274 1996-07-09 2450325 1996-08-29 -51 SVO
28 8.6 2450514 1997-03-06 2450566 1997-04-27 -52 SVO
29 8.2 2450760 1997-11-07 2450808 1997-12-25 -48 SVO
30 8.8 2451001 1998-07-06 2451049 1998-08-23 -48 SVO
31 8.4 2451248 1999-03-10 2451291 1999-04-22 -43 SVO
32 8.2 2451489 1999-11-06 2451532 1999-12-19 -43 SVO
33 7.9 2451723 2000-06-27 2451774 2000-08-17 -51 SVO
34 8.5 2451966 2001-02-25 2452015 2001-04-15 -49 SVO
35 8.5 2452209 2001-10-26 2452257 2001-12-13 -48 SVO
36 8.1 2452448 2002-06-22 2452498 2002-08-11 -50 SVO
37 8.2 2452692 2003-02-21 2452740 2003-04-10 -48 SVO
38 8.5 2452938 2003-10-25 2452981 2003-12-07 -43 SVO
39 8.2 2453182 2004-06-25 2453223 2004-08-05 -41 SVO
40 8.7 2453423 2005-02-21 2453464 2005-04-03 -41 SVO
41 8.0 2453663 2005-10-19 2453706 2005-12-01 -43 SVO
42 8.9 2453913 2006-06-26 2453947 2006-07-30 -34 SVO
43 8.2 2454150 2007-02-18 2454189 2007-03-29 -39 SVO
44 8.3 2454390 2007-10-16 2454430 2007-11-25 -40 SVO
45 8.8 2454642 2008-06-24 2454672 2008-07-24 -30 SVO
46 8.2 2454884 2009-02-21 2454913 2009-03-22 -29 SVO
47 8.6 2455117 2009-10-12 2455155 2009-11-19 -38 SVO
48 8.1 2455356 2010-06-08 2455396 2010-07-18 -40 SVO
49 8.8 2455592 2011-01-30 2455638 2011-03-17 -46 SVO
50 8.2 2455832 2011-09-27 2455879 2011-11-13 -47 SVO
51 8.5 2456071 2012-05-23 2456121 2012-07-12 -50 SVO
52 8.8 2456316 2013-01-23 2456362 2013-03-10 -46 SVO
53 8.3 2456555 2013-09-19 2456604 2013-11-07 -49 SVO
54 8.0 2456789 2014-05-11 2456845 2014-07-06 -56 SVO
55 8.5 2457032 2015-01-09 2457087 2015-03-05 -55 SVO
56 8.7 2457280 2015-09-14 2457328 2015-11-01 -48 SVO
57 8.1 2457519 2016-05-10 2457570 2016-06-30 -51 SVO
58 8.6 2457757 2017-01-03 2457811 2017-02-26 -54 SVO
59 8.2 2458001 2017-09-04 2458053 2017-10-26 -52 SVO
60 8.7 2458243 2018-05-04 2458294 2018-06-24 -51 SVO
61 8.4 2458487 2019-01-03 2458536 2019-02-21 -49 SVO
62 8.1 2458722 2019-08-26 2458777 2019-10-20 -55 SVO
63 8.3 2458965 2020-04-25 2459019 2020-06-18 -54 SVO
64 8.6 2459203 2020-12-19 2459260 2021-02-14 -57 SVO
65 8.1 2459435 2021-08-08 2459502 2021-10-14 -67 SVO
66 8.8 2459671 2022-04-01 2459743 2022-06-12 -72 SVO
67 8.7 2459918 2022-12-04 2459985 2023-02-09 -67 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.