Maxima for S Del
Period: 277.75, Epoch: 2444887
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-158 8.8 2400976 1861-07-19 2401003 1861-08-15 -27 SVO
-157   2401257 1862-04-26 2401280 1862-05-19 -23 MNRAS, 1914, vol 74, p 568
-156   2401540 1863-02-03 2401558 1863-02-21 -18 MNRAS, 1914, vol 74, p 568
-155 8.7 2401812 1863-11-02 2401836 1863-11-26 -24 SVO
-154 8.8 2402105 1864-08-21 2402114 1864-08-30 -9 SVO
-153   2402379 1865-05-22 2402391 1865-06-03 -12 MNRAS, 1914, vol 74, p 568
-152   2402659 1866-02-26 2402669 1866-03-08 -10 MNRAS, 1914, vol 74, p 568
-151 9.0 2402911 1866-11-05 2402947 1866-12-11 -36 SVO
-150   2403196 1867-08-17 2403225 1867-09-15 -29 AnHar, 1909, vol 55, p 95, MNRAS, 1914, vol 74, p 568
-149   2403470 1868-05-17 2403502 1868-06-18 -32 VeBam, 1931, vol 3, p 1
-148   2403738 1869-02-09 2403780 1869-03-23 -42 VeBam, 1931, vol 3, p 1
-147   2404019 1869-11-17 2404058 1869-12-26 -39 AnHar, 1909, vol 55, p 95
-146 8.2 2404317 1870-09-11 2404336 1870-09-30 -19 SVO
-145   2404585 1871-06-06 2404613 1871-07-04 -28 GuL, 1920, 1.2
-144   2404875 1872-03-22 2404891 1872-04-07 -16 GuL, 1920, 1.2
-141   2405657 1874-05-13 2405724 1874-07-19 -67 AnHar, 1909, vol 55, p 95
-137   2406819 1877-07-18 2406835 1877-08-03 -16 GuL, 1920, 1.2
-135   2407344 1878-12-25 2407391 1879-02-10 -47 GuL, 1920, 1.2, MNRAS, 1914, vol 74, p 568
-134 8.9 2407638 1879-10-15 2407669 1879-11-15 -31 SVO
-133 8.8 2407923 1880-07-26 2407946 1880-08-18 -23 SVO
-132   2408196 1881-04-25 2408224 1881-05-23 -28 MNRAS, 1914, vol 74, p 568, GuL, 1920, 1.2
-131   2408462 1882-01-16 2408502 1882-02-25 -40 GuL, 1920, 1.2, MNRAS, 1914, vol 74, p 568
-129   2408985 1883-06-23 2409057 1883-09-03 -72 GuL, 1920, 1.2
-127   2409566 1885-01-24 2409613 1885-03-12 -47 MNRAS, 1914, vol 74, p 568
-126 8.7 2409834 1885-10-19 2409891 1885-12-15 -57 SVO
-125   2410119 1886-07-31 2410168 1886-09-18 -49 AnHar, 1909, vol 55, p 95, MNRAS, 1914, vol 74, p 568
-124   2410403 1887-05-11 2410446 1887-06-23 -43 GuL, 1920, 1.2
-122   2410957 1888-11-15 2411002 1888-12-30 -45 GuL, 1920, 1.2
-121   2411208 1889-07-24 2411279 1889-10-03 -71 AnHar, 1909, vol 55, p 95
-118   2412060 1891-11-23 2412113 1892-01-15 -53 AnHar, 1909, vol 55, p 95
-117   2412349 1892-09-07 2412390 1892-10-18 -41 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-116   2412623 1893-06-08 2412668 1893-07-23 -45 GuL, 1920, 1.2
-115   2412912 1894-03-24 2412946 1894-04-27 -34 GuL, 1920, 1.2
-114   2413190 1894-12-27 2413224 1895-01-30 -34 GuL, 1920, 1.2
-113   2413443 1895-09-06 2413501 1895-11-03 -58 AnHar, 1909, vol 55, p 95
-112   2413740 1896-06-29 2413779 1896-08-07 -39 GuL, 1920, 1.2
-111   2414020 1897-04-05 2414057 1897-05-12 -37 SVO
-110   2414271 1897-12-12 2414335 1898-02-14 -64 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-109   2414577 1898-10-14 2414612 1898-11-18 -35 GuL, 1920, 1.2
-108   2414839 1899-07-03 2414890 1899-08-23 -51 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-107   2415127 1900-04-17 2415168 1900-05-28 -41 AnHar, 1909, vol 55, p 95
-106   2415369 1900-12-15 2415446 1901-03-02 -77 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-105   2415670 1901-10-12 2415723 1901-12-04 -53 AnHar, 1909, vol 55, p 95
-104   2415943 1902-07-12 2416001 1902-09-08 -58 AnHar, 1909, vol 55, p 95, GuL, 1920, 1.2
-103   2416220 1903-04-15 2416279 1903-06-13 -59 GuL, 1920, 1.2, AnHar, 1952, vol 118
-102   2416450 1903-12-01 2416557 1904-03-17 -107 AnHar, 1952, vol 118
-101 8.7 2416741 1904-09-17 2416834 1904-12-19 -93 AAVSO
-100 9.7 2417032 1905-07-05 2417112 1905-09-23 -80 AAVSO
-99 9.7 2417322 1906-04-21 2417390 1906-06-28 -68 AAVSO
-98   2417614 1907-02-07 2417668 1907-04-02 -54 AAVSO
-97 9.3 2417876 1907-10-27 2417945 1908-01-04 -69 AAVSO
-96   2418151 1908-07-28 2418223 1908-10-08 -72 SVO
-95   2418401 1909-04-04 2418501 1909-07-13 -100 AAVSO
-94 9.1 2418676 1910-01-04 2418779 1910-04-17 -103 AAVSO
-93 9.0 2418963 1910-10-18 2419056 1911-01-19 -93 AAVSO
-92 9.0 2419243 1911-07-25 2419334 1911-10-24 -91 AAVSO
-91 9.3 2419518 1912-04-25 2419612 1912-07-28 -94 AAVSO
-90 8.8 2419782 1913-01-14 2419890 1913-05-02 -108 AAVSO
-89 8.7 2420060 1913-10-19 2420167 1914-02-03 -107 AAVSO
-88   2420327 1914-07-13 2420445 1914-11-08 -118 AAVSO
-87   2420618 1915-04-30 2420723 1915-08-13 -105 AAVSO
-86   2420894 1916-01-31 2421001 1916-05-17 -107 AAVSO
-85 9.0 2421184 1916-11-16 2421278 1917-02-18 -94 AAVSO
-84 8.9 2421475 1917-09-03 2421556 1917-11-23 -81 SVO
-83 8.9 2421726 1918-05-12 2421834 1918-08-28 -108 AAVSO
-82 9.1 2421992 1919-02-02 2422112 1919-06-02 -120 SVO
-81 8.9 2422266 1919-11-03 2422389 1920-03-05 -123 AAVSO
-80 8.6 2422554 1920-08-17 2422667 1920-12-08 -113 SVO
-79 9.0 2422804 1921-04-24 2422945 1921-09-12 -141 AAVSO
-78   2423106 1922-02-20 2423223 1922-06-17 -117 AAVSO
-77 8.9 2423384 1922-11-25 2423500 1923-03-21 -116 AAVSO
-76 8.9 2423662 1923-08-30 2423778 1923-12-24 -116 SVO
-75 8.8 2423941 1924-06-04 2424056 1924-09-27 -115 AAVSO
-74 9.0 2424223 1925-03-13 2424334 1925-07-02 -111 AAVSO
-73 9.1 2424481 1925-11-26 2424611 1926-04-05 -130 SVO
-72 9.1 2424802 1926-10-13 2424889 1927-01-08 -87 SVO
-71 9.0 2425083 1927-07-21 2425167 1927-10-13 -84 AAVSO
-70 8.6 2425363 1928-04-26 2425445 1928-07-17 -82 AAVSO
-69 9.4 2425625 1929-01-13 2425722 1929-04-20 -97 SVO
-68 9.0 2425904 1929-10-19 2426000 1930-01-23 -96 SVO
-67 8.9 2426191 1930-08-02 2426278 1930-10-28 -87 SVO
-66 8.8 2426466 1931-05-04 2426556 1931-08-02 -90 AAVSO
-65 8.6 2426747 1932-02-09 2426833 1932-05-05 -86 AAVSO
-64 8.7 2427026 1932-11-14 2427111 1933-02-07 -85 SVO
-63 9.0 2427316 1933-08-31 2427389 1933-11-12 -73 AAVSO
-62 9.4 2427617 1934-06-28 2427667 1934-08-17 -50 SVO
-61 8.9 2427884 1935-03-22 2427944 1935-05-21 -60 AAVSO
-60 8.8 2428152 1935-12-15 2428222 1936-02-23 -70 AAVSO
-59 9.0 2428441 1936-09-29 2428500 1936-11-27 -59 SVO
-58 9.0 2428735 1937-07-20 2428778 1937-09-01 -43 SVO
-57 9.1 2428988 1938-03-30 2429055 1938-06-05 -67 SVO
-56 8.9 2429261 1938-12-28 2429333 1939-03-10 -72 AAVSO
-55 8.9 2429533 1939-09-26 2429611 1939-12-13 -78 SVO
-54 9.0 2429813 1940-07-02 2429889 1940-09-16 -76 SVO
-53 8.9 2430081 1941-03-27 2430166 1941-06-20 -85 SVO
-52 9.0 2430351 1941-12-22 2430444 1942-03-25 -93 SVO
-51 8.6 2430631 1942-09-28 2430722 1942-12-28 -91 SVO
-50 8.6 2430903 1943-06-27 2431000 1943-10-02 -97 SVO
-49 8.7 2431187 1944-04-06 2431277 1944-07-05 -90 AAVSO
-48 8.4 2431463 1945-01-07 2431555 1945-04-09 -92 AAVSO
-47 8.7 2431750 1945-10-21 2431833 1946-01-12 -83 AAVSO
-46 8.8 2432052 1946-08-19 2432111 1946-10-17 -59 SVO
-45 8.9 2432321 1947-05-15 2432388 1947-07-21 -67 AAVSO
-44 9.2 2432631 1948-03-20 2432666 1948-04-24 -35 SVO
-43 8.7 2432890 1948-12-04 2432944 1949-01-27 -54 AAVSO
-42 8.7 2433166 1949-09-06 2433222 1949-11-01 -56 SVO
-41 8.9 2433454 1950-06-21 2433499 1950-08-05 -45 AAVSO
-40   2433737 1951-03-31 2433777 1951-05-10 -40 AAVSO
-39 9.2 2434013 1952-01-01 2434055 1952-02-12 -42 AAVSO
-38 9.0 2434268 1952-09-12 2434333 1952-11-16 -65 SVO
-37 9.3 2434565 1953-07-06 2434610 1953-08-20 -45 SVO
-36   2434841 1954-04-08 2434888 1954-05-25 -47 AAVSO
-35 9.0 2435106 1954-12-29 2435166 1955-02-27 -60 AAVSO
-34 8.8 2435370 1955-09-19 2435444 1955-12-02 -74 SVO
-33 9.1 2435651 1956-06-26 2435721 1956-09-04 -70 AAVSO
-32 8.8 2435934 1957-04-05 2435999 1957-06-09 -65 SVO
-31 8.8 2436204 1957-12-31 2436277 1958-03-14 -73 AAVSO
-30 8.8 2436480 1958-10-03 2436555 1958-12-17 -75 SVO
-29 9.0 2436768 1959-07-18 2436832 1959-09-20 -64 SVO
-28 9.6 2437049 1960-04-24 2437110 1960-06-24 -61 AAVSO
-27 9.2 2437325 1961-01-25 2437388 1961-03-29 -63 AAVSO
-26 9.0 2437601 1961-10-28 2437666 1962-01-01 -65 SVO
-25 8.9 2437905 1962-08-28 2437943 1962-10-05 -38 SVO
-24 9.3 2438203 1963-06-22 2438221 1963-07-10 -18 SVO
-23 8.9 2438444 1964-02-18 2438499 1964-04-13 -55 SVO
-22 9.0 2438735 1964-12-05 2438777 1965-01-16 -42 AAVSO
-21 8.8 2439003 1965-08-30 2439054 1965-10-20 -51 SVO
-20 8.9 2439285 1966-06-08 2439332 1966-07-25 -47 SVO
-19 9.0 2439560 1967-03-10 2439610 1967-04-29 -50 SVO
-18 8.7 2439831 1967-12-06 2439888 1968-02-01 -57 SVO
-17 8.7 2440109 1968-09-09 2440165 1968-11-04 -56 SVO
-16 9.0 2440397 1969-06-24 2440443 1969-08-09 -46 SVO
-15 8.8 2440697 1970-04-20 2440721 1970-05-14 -24 SVO
-14 9.0 2440953 1971-01-01 2440999 1971-02-16 -46 AAVSO
-13 9.0 2441243 1971-10-18 2441276 1971-11-20 -33 SVO
-12 8.6 2441514 1972-07-15 2441554 1972-08-24 -40 SVO
-11 8.8 2441789 1973-04-16 2441832 1973-05-29 -43 SVO
-10 8.9 2442069 1974-01-21 2442110 1974-03-03 -41 SVO
-9 8.8 2442338 1974-10-17 2442387 1974-12-05 -49 SVO
-8 8.7 2442617 1975-07-23 2442665 1975-09-09 -48 SVO
-7 8.7 2442904 1976-05-05 2442943 1976-06-13 -39 SVO
-6 8.7 2443186 1977-02-11 2443221 1977-03-18 -35 SVO
-5 9.0 2443461 1977-11-13 2443498 1977-12-20 -37 SVO
-4 9.1 2443770 1978-09-18 2443776 1978-09-24 -6 SVO
-3 9.2 2444057 1979-07-02 2444054 1979-06-29 3 SVO
-2 8.8 2444331 1980-04-01 2444332 1980-04-02 -1 SVO
-1 8.9 2444604 1980-12-30 2444609 1981-01-04 -5 SVO
0 8.8 2444885 1981-10-07 2444887 1981-10-09 -2 SVO
1 8.8 2445159 1982-07-08 2445165 1982-07-14 -6 SVO
2 8.8 2445440 1983-04-15 2445443 1983-04-18 -3 SVO
3 8.9 2445705 1984-01-05 2445720 1984-01-20 -15 SVO
4 8.7 2445997 1984-10-23 2445998 1984-10-24 -1 SVO
5 8.8 2446279 1985-08-01 2446276 1985-07-29 3 SVO
6 8.9 2446566 1986-05-15 2446554 1986-05-03 12 SVO
7 8.6 2446837 1987-02-10 2446831 1987-02-04 6 SVO
8 8.9 2447134 1987-12-04 2447109 1987-11-09 25 SVO
9 8.9 2447420 1988-09-15 2447387 1988-08-13 33 SVO
10 8.8 2447700 1989-06-22 2447665 1989-05-18 35 SVO
11 8.9 2447994 1990-04-12 2447942 1990-02-19 52 SVO
12 8.8 2448265 1991-01-08 2448220 1990-11-24 45 SVO
13 8.6 2448538 1991-10-08 2448498 1991-08-29 40 SVO
14 8.7 2448815 1992-07-11 2448776 1992-06-02 39 SVO
15 8.6 2449088 1993-04-10 2449053 1993-03-06 35 SVO
16 9.0 2449366 1994-01-13 2449331 1993-12-09 35 SVO
17 8.9 2449650 1994-10-24 2449609 1994-09-13 41 SVO
18 8.9 2449926 1995-07-27 2449887 1995-06-18 39 SVO
19 9.1 2450217 1996-05-13 2450164 1996-03-21 53 SVO
20 9.0 2450493 1997-02-13 2450442 1996-12-24 51 SVO
21 8.8 2450759 1997-11-06 2450720 1997-09-28 39 SVO
22 8.8 2451027 1998-08-01 2450998 1998-07-03 29 SVO
23 8.8 2451302 1999-05-03 2451275 1999-04-06 27 SVO
24 9.0 2451583 2000-02-08 2451553 2000-01-09 30 SVO
25 8.6 2451849 2000-10-31 2451831 2000-10-13 18 SVO
26 8.8 2452122 2001-07-31 2452109 2001-07-18 13 SVO
27 9.2 2452415 2002-05-20 2452386 2002-04-21 29 SVO
28 8.7 2452679 2003-02-08 2452664 2003-01-24 15 SVO
29 8.6 2452968 2003-11-24 2452942 2003-10-29 26 SVO
30 9.0 2453245 2004-08-27 2453220 2004-08-02 25 SVO
31 8.6 2453508 2005-05-17 2453497 2005-05-06 11 SVO
32 9.0 2453783 2006-02-16 2453775 2006-02-08 8 SVO
33 9.1 2454062 2006-11-22 2454053 2006-11-13 9 SVO
34 8.6 2454335 2007-08-22 2454331 2007-08-18 4 SVO
35 8.8 2454616 2008-05-29 2454608 2008-05-21 8 SVO
36 9.0 2454897 2009-03-06 2454886 2009-02-23 11 SVO
37 8.6 2455176 2009-12-10 2455164 2009-11-28 12 SVO
38 8.6 2455443 2010-09-03 2455442 2010-09-02 1 SVO
39 8.9 2455723 2011-06-10 2455719 2011-06-06 4 SVO
40 9.0 2455985 2012-02-27 2455997 2012-03-10 -12 SVO
41 8.9 2456268 2012-12-06 2456275 2012-12-13 -7 SVO
42 8.8 2456547 2013-09-11 2456553 2013-09-17 -6 SVO
43 8.8 2456830 2014-06-21 2456830 2014-06-21 0 SVO
44 9.0 2457114 2015-04-01 2457108 2015-03-26 6 SVO
45 9.0 2457394 2016-01-06 2457386 2015-12-29 8 SVO
46 8.8 2457666 2016-10-04 2457664 2016-10-02 2 SVO
47 8.7 2457945 2017-07-10 2457941 2017-07-06 4 SVO
48 8.7 2458221 2018-04-12 2458219 2018-04-10 2 SVO
49 9.3 2458478 2018-12-25 2458497 2019-01-13 -19 SVO
50 8.9 2458782 2019-10-25 2458775 2019-10-18 7 SVO
51 8.8 2459059 2020-07-28 2459052 2020-07-21 7 SVO
52 8.8 2459334 2021-04-29 2459330 2021-04-25 4 SVO
53 8.6 2459579 2021-12-30 2459608 2022-01-28 -29 SVO
54 8.8 2459886 2022-11-02 2459886 2022-11-02 0 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.