Maxima for chi Cyg
Period: 407.27, Epoch: 2442115.6
AAVSO offset: 0

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-258   2337151 1686-10-19 2337040 1686-06-30 111 AnHar, 1909, vol 55, p 95
-257 4.9 2337552 1687-11-24 2337447 1687-08-11 105 SVO
-256   2337956 1689-01-01 2337854 1688-09-21 102 AnHar, 1909, vol 55, p 95
-255   2338360 1690-02-09 2338262 1689-11-03 98 AnHar, 1909, vol 55, p 95
-252   2339572 1693-06-05 2339483 1693-03-08 89 AnHar, 1909, vol 55, p 95
-251   2339987 1694-07-25 2339891 1694-04-20 96 AnHar, 1909, vol 55, p 95
-250   2340389 1695-08-31 2340298 1695-06-01 91 AnHar, 1909, vol 55, p 95
-245   2342417 1701-03-21 2342334 1700-12-28 83 AnHar, 1909, vol 55, p 95
-244   2342817 1702-04-25 2342742 1702-02-09 75 AnHar, 1909, vol 55, p 95
-241   2344044 1705-09-03 2343963 1705-06-14 81 AnHar, 1909, vol 55, p 95
-240   2344437 1706-10-01 2344371 1706-07-27 66 AnHar, 1909, vol 55, p 95
-239   2344833 1707-11-01 2344778 1707-09-07 55 AnHar, 1909, vol 55, p 95
-238   2345262 1709-01-03 2345185 1708-10-18 77 AnHar, 1909, vol 55, p 95
-235   2346476 1712-05-01 2346407 1712-02-22 69 AnHar, 1909, vol 55, p 95
-233   2347291 1714-07-25 2347222 1714-05-17 69 AnHar, 1909, vol 55, p 95
-232   2347694 1715-09-01 2347629 1715-06-28 65 AnHar, 1909, vol 55, p 95
-231   2348105 1716-10-16 2348036 1716-08-08 69 AnHar, 1909, vol 55, p 95
-230   2348497 1717-11-12 2348443 1717-09-19 54 AnHar, 1909, vol 55, p 95
-229   2348912 1719-01-01 2348851 1718-11-01 61 AnHar, 1909, vol 55, p 95
-223 5.3 2351369 1725-09-23 2351294 1725-07-10 75 SVO
-222 5.4 2351766 1726-10-25 2351701 1726-08-21 65 SVO
-217   2353791 1732-05-11 2353738 1732-03-19 53 AnHar, 1909, vol 55, p 95
-214   2355015 1735-09-17 2354960 1735-07-24 55 AnHar, 1909, vol 55, p 95
-212   2355818 1737-11-28 2355774 1737-10-15 44 AnHar, 1909, vol 55, p 95
-211   2356217 1739-01-01 2356181 1738-11-26 36 AnHar, 1909, vol 55, p 95
-203   2359451 1747-11-09 2359440 1747-10-29 11 AnHar, 1909, vol 55, p 95
-195   2362681 1756-09-12 2362698 1756-09-29 -17 AnHar, 1909, vol 55, p 95
-194   2363082 1757-10-18 2363105 1757-11-10 -23 AnHar, 1909, vol 55, p 95
-193   2363500 1758-12-10 2363512 1758-12-22 -12 SVO
-171   2372475 1783-07-07 2372472 1783-07-04 3 AnHar, 1909, vol 55, p 95
-170 4.7 2372867 1784-08-02 2372880 1784-08-15 -13 SVO
-169   2373263 1785-09-02 2373287 1785-09-26 -24 AnHar, 1909, vol 55, p 95
-157   2378147 1799-01-16 2378174 1799-02-12 -27 AnHar, 1909, vol 55, p 95
-142 5.1 2384257 1815-10-10 2384283 1815-11-05 -26 SVO
-141   2384660 1816-11-16 2384690 1816-12-16 -30 AnHar, 1909, vol 55, p 95
-140   2385076 1818-01-06 2385098 1818-01-28 -22 AnHar, 1909, vol 55, p 95
-137   2386269 1821-04-13 2386320 1821-06-03 -51 AnHar, 1909, vol 55, p 95
-136   2386666 1822-05-15 2386727 1822-07-15 -61 AnHar, 1909, vol 55, p 95
-135   2387074 1823-06-27 2387134 1823-08-26 -60 AnHar, 1909, vol 55, p 95
-134   2387479 1824-08-05 2387541 1824-10-06 -62 AnHar, 1909, vol 55, p 95
-133   2387886 1825-09-16 2387949 1825-11-18 -63 AnHar, 1909, vol 55, p 95
-132   2388302 1826-11-06 2388356 1826-12-30 -54 AnHar, 1909, vol 55, p 95
-131   2388692 1827-12-01 2388763 1828-02-10 -71 AnHar, 1909, vol 55, p 95
-129   2389524 1830-03-12 2389578 1830-05-05 -54 AnHar, 1909, vol 55, p 95
-119   2393564 1841-04-03 2393650 1841-06-28 -86 AnHar, 1909, vol 55, p 95
-118 5.0 2393980 1842-05-24 2394058 1842-08-10 -78 SVO
-117 4.6 2394386 1843-07-04 2394465 1843-09-21 -79 SVO
-116 5.1 2394793 1844-08-14 2394872 1844-11-01 -79 SVO
-115 4.2 2395207 1845-10-02 2395279 1845-12-13 -72 SVO
-114 5.8 2395624 1846-11-23 2395687 1847-01-25 -63 SVO
-113 4.0 2396019 1847-12-23 2396094 1848-03-07 -75 SVO
-112 6.6 2396432 1849-02-08 2396501 1849-04-18 -69 SVO
-111   2396832 1850-03-15 2396909 1850-05-31 -77 AnHar, 1909, vol 55, p 95
-110   2397226 1851-04-13 2397316 1851-07-12 -90 AnHar, 1909, vol 55, p 95
-109 4.5 2397638 1852-05-29 2397723 1852-08-22 -85 SVO
-108 4.6 2398060 1853-07-25 2398130 1853-10-03 -70 SVO
-107 4.6 2398452 1854-08-21 2398538 1854-11-15 -86 SVO
-106 4.6 2398866 1855-10-09 2398945 1855-12-27 -79 SVO
-105 4.4 2399273 1856-11-19 2399352 1857-02-06 -79 SVO
-104 4.6 2399689 1858-01-09 2399759 1858-03-20 -70 SVO
-103 7.2 2400103 1859-02-27 2400167 1859-05-02 -64 SVO
-102 5.3 2400501 1860-03-31 2400574 1860-06-12 -73 SVO
-101 7.0 2400918 1861-05-22 2400981 1861-07-24 -63 SVO
-100 4.6 2401316 1862-06-24 2401389 1862-09-05 -73 SVO
-99 5.0 2401751 1863-09-02 2401796 1863-10-17 -45 SVO
-98 4.0 2402156 1864-10-11 2402203 1864-11-27 -47 SVO
-97 4.3 2402568 1865-11-27 2402610 1866-01-08 -42 SVO
-96 4.3 2402990 1867-01-23 2403018 1867-02-20 -28 SVO
-95 4.7 2403411 1868-03-19 2403425 1868-04-02 -14 SVO
-94 5.1 2403820 1869-05-02 2403832 1869-05-14 -12 SVO
-93 4.8 2404222 1870-06-08 2404239 1870-06-25 -17 SVO
-92 4.3 2404624 1871-07-15 2404647 1871-08-07 -23 SVO
-91 4.7 2405035 1872-08-29 2405054 1872-09-17 -19 SVO
-90 4.5 2405437 1873-10-05 2405461 1873-10-29 -24 SVO
-89 4.7 2405845 1874-11-17 2405869 1874-12-11 -24 SVO
-88 4.1 2406232 1875-12-09 2406276 1876-01-22 -44 SVO
-87 4.4 2406643 1877-01-23 2406683 1877-03-04 -40 SVO
-86 4.7 2407054 1878-03-10 2407090 1878-04-15 -36 SVO
-85 4.5 2407464 1879-04-24 2407498 1879-05-28 -34 SVO
-84 4.5 2407867 1880-05-31 2407905 1880-07-08 -38 SVO
-83 4.7 2408274 1881-07-12 2408312 1881-08-19 -38 SVO
-82 4.2 2408694 1882-09-05 2408719 1882-09-30 -25 SVO
-81 4.3 2409092 1883-10-08 2409127 1883-11-12 -35 SVO
-80 5.0 2409512 1884-12-01 2409534 1884-12-23 -22 SVO
-79 4.5 2409924 1886-01-17 2409941 1886-02-03 -17 SVO
-77   2410751 1888-04-23 2410756 1888-04-28 -5 AnHar, 1909, vol 55, p 95
-76   2411142 1889-05-19 2411163 1889-06-09 -21 AnHar, 1909, vol 55, p 95
-75 4.3 2411550 1890-07-01 2411570 1890-07-21 -20 SVO
-74 5.3 2411962 1891-08-17 2411978 1891-09-02 -16 SVO
-73   2412360 1892-09-18 2412385 1892-10-13 -25 AnHar, 1909, vol 55, p 95
-72 4.5 2412784 1893-11-16 2412792 1893-11-24 -8 SVO
-71 4.7 2413192 1894-12-29 2413199 1895-01-05 -7 SVO
-70   2413579 1896-01-20 2413607 1896-02-17 -28 AnHar, 1909, vol 55, p 95
-69 5.0 2414003 1897-03-19 2414014 1897-03-30 -11 SVO
-68   2414392 1898-04-12 2414421 1898-05-11 -29 AnHar, 1909, vol 55, p 95
-67 4.4 2414807 1899-06-01 2414828 1899-06-22 -21 SVO
-66 5.4 2415214 1900-07-13 2415236 1900-08-04 -22 SVO
-65 4.7 2415618 1901-08-21 2415643 1901-09-15 -25 SVO
-64 4.5 2416020 1902-09-27 2416050 1902-10-27 -30 SVO
-63 5.0 2416432 1903-11-13 2416458 1903-12-09 -26 SVO
-62 4.4 2416836 1904-12-21 2416865 1905-01-19 -29 SVO
-61 4.5 2417234 1906-01-23 2417272 1906-03-02 -38 SVO
-60 4.7 2417654 1907-03-19 2417679 1907-04-13 -25 SVO
-59 5.1 2418049 1908-04-17 2418087 1908-05-25 -38 SVO
-58 4.1 2418445 1909-05-18 2418494 1909-07-06 -49 SVO
-57 5.2 2418855 1910-07-02 2418901 1910-08-17 -46 SVO
-56 4.3 2419261 1911-08-12 2419308 1911-09-28 -47 SVO
-55 5.4 2419677 1912-10-01 2419716 1912-11-09 -39 SVO
-54 5.5 2420087 1913-11-15 2420123 1913-12-21 -36 SVO
-53 4.5 2420476 1914-12-09 2420530 1915-02-01 -54 SVO
-52 5.8 2420884 1916-01-21 2420938 1916-03-15 -54 SVO
-51 5.8 2421293 1917-03-05 2421345 1917-04-26 -52 SVO
-50 4.8 2421690 1918-04-06 2421752 1918-06-07 -62 SVO
-49 6.2 2422103 1919-05-24 2422159 1919-07-19 -56 SVO
-48 5.3 2422517 1920-07-11 2422567 1920-08-30 -50 SVO
-47 5.5 2422930 1921-08-28 2422974 1921-10-11 -44 SVO
-46 4.6 2423329 1922-10-01 2423381 1922-11-22 -52 SVO
-45 4.4 2423732 1923-11-08 2423788 1924-01-03 -56 SVO
-44 5.5 2424147 1924-12-27 2424196 1925-02-14 -49 SVO
-43 4.0 2424547 1926-01-31 2424603 1926-03-28 -56 SVO
-42 4.9 2424947 1927-03-07 2425010 1927-05-09 -63 SVO
-41 4.9 2425376 1928-05-09 2425418 1928-06-20 -42 SVO
-40 4.7 2425793 1929-06-30 2425825 1929-08-01 -32 SVO
-39 6.3 2426209 1930-08-20 2426232 1930-09-12 -23 SVO
-38 5.1 2426607 1931-09-22 2426639 1931-10-24 -32 SVO
-37 5.3 2427032 1932-11-20 2427047 1932-12-05 -15 SVO
-36 4.8 2427428 1933-12-21 2427454 1934-01-16 -26 SVO
-35 4.9 2427845 1935-02-11 2427861 1935-02-27 -16 SVO
-34 4.5 2428260 1936-04-01 2428268 1936-04-09 -8 SVO
-33 6.2 2428669 1937-05-15 2428676 1937-05-22 -7 SVO
-32 5.0 2429077 1938-06-27 2429083 1938-07-03 -6 SVO
-31 5.7 2429493 1939-08-17 2429490 1939-08-14 3 SVO
-30 5.1 2429908 1940-10-05 2429898 1940-09-25 10 SVO
-29 5.2 2430309 1941-11-10 2430305 1941-11-06 4 SVO
-28 4.8 2430716 1942-12-22 2430712 1942-12-18 4 SVO
-27 5.1 2431121 1944-01-31 2431119 1944-01-29 2 SVO
-26 5.0 2431534 1945-03-19 2431527 1945-03-12 7 SVO
-25 4.4 2431937 1946-04-26 2431934 1946-04-23 3 SVO
-24 5.8 2432341 1947-06-04 2432341 1947-06-04 0 SVO
-23 4.9 2432754 1948-07-21 2432748 1948-07-15 6 SVO
-22 5.8 2433172 1949-09-12 2433156 1949-08-27 16 SVO
-21 4.8 2433576 1950-10-21 2433563 1950-10-08 13 SVO
-20 5.2 2433979 1951-11-28 2433970 1951-11-19 9 SVO
-19 4.7 2434392 1953-01-14 2434377 1952-12-30 15 SVO
-18 6.0 2434815 1954-03-13 2434785 1954-02-11 30 SVO
-17 5.3 2435208 1955-04-10 2435192 1955-03-25 16 SVO
-16 4.8 2435619 1956-05-25 2435599 1956-05-05 20 SVO
-15 5.4 2436024 1957-07-04 2436007 1957-06-17 17 SVO
-14 4.9 2436427 1958-08-11 2436414 1958-07-29 13 SVO
-13 4.6 2436824 1959-09-12 2436821 1959-09-09 3 SVO
-12 4.3 2437223 1960-10-15 2437228 1960-10-20 -5 SVO
-11 4.8 2437631 1961-11-27 2437636 1961-12-02 -5 SVO
-10 4.8 2438030 1962-12-31 2438043 1963-01-13 -13 SVO
-9 5.3 2438446 1964-02-20 2438450 1964-02-24 -4 SVO
-8 4.4 2438841 1965-03-21 2438857 1965-04-06 -16 SVO
-7 5.8 2439246 1966-04-30 2439265 1966-05-19 -19 SVO
-6 5.1 2439660 1967-06-18 2439672 1967-06-30 -12 SVO
-5 5.1 2440067 1968-07-29 2440079 1968-08-10 -12 SVO
-4 5.0 2440482 1969-09-17 2440487 1969-09-22 -5 SVO
-3 4.8 2440895 1970-11-04 2440894 1970-11-03 1 SVO
-2 5.1 2441316 1971-12-30 2441301 1971-12-15 15 SVO
-1 4.4 2441722 1973-02-08 2441708 1973-01-25 14 SVO
0 5.1 2442140 1974-04-02 2442116 1974-03-09 24 SVO
1 4.7 2442555 1975-05-22 2442523 1975-04-20 32 SVO
2 5.8 2442974 1976-07-14 2442930 1976-05-31 44 SVO
3 5.2 2443389 1977-09-02 2443337 1977-07-12 52 SVO
4 4.2 2443782 1978-09-30 2443745 1978-08-24 37 SVO
5 5.0 2444198 1979-11-20 2444152 1979-10-05 46 SVO
6 4.2 2444605 1980-12-31 2444559 1980-11-15 46 SVO
7 5.8 2445025 1982-02-24 2444967 1981-12-28 58 SVO
8 5.1 2445427 1983-04-02 2445374 1983-02-08 53 SVO
9 5.1 2445847 1984-05-26 2445781 1984-03-21 66 SVO
10 6.2 2446257 1985-07-10 2446188 1985-05-02 69 SVO
11 4.8 2446650 1986-08-07 2446596 1986-06-14 54 SVO
12 6.4 2447070 1987-10-01 2447003 1987-07-26 67 SVO
13 4.9 2447482 1988-11-16 2447410 1988-09-05 72 SVO
14 6.2 2447879 1989-12-18 2447817 1989-10-17 62 SVO
15 5.2 2448280 1991-01-23 2448225 1990-11-29 55 SVO
16 5.5 2448686 1992-03-04 2448632 1992-01-10 54 SVO
17 4.6 2449086 1993-04-08 2449039 1993-02-20 47 SVO
18 6.0 2449494 1994-05-21 2449447 1994-04-04 47 SVO
19 5.3 2449902 1995-07-03 2449854 1995-05-16 48 SVO
20 5.8 2450310 1996-08-14 2450261 1996-06-26 49 SVO
21 4.7 2450714 1997-09-22 2450668 1997-08-07 46 SVO
22 5.3 2451125 1998-11-07 2451076 1998-09-19 49 SVO
23 4.9 2451535 1999-12-22 2451483 1999-10-31 52 SVO
24 5.3 2451931 2001-01-21 2451890 2000-12-11 41 SVO
25 4.5 2452329 2002-02-23 2452297 2002-01-22 32 SVO
26 5.5 2452733 2003-04-03 2452705 2003-03-06 28 SVO
27 4.8 2453147 2004-05-21 2453112 2004-04-16 35 SVO
28 5.1 2453551 2005-06-29 2453519 2005-05-28 32 SVO
29 4.4 2453962 2006-08-14 2453926 2006-07-09 36 SVO
30 5.9 2454376 2007-10-02 2454334 2007-08-21 42 SVO
31 4.6 2454787 2008-11-16 2454741 2008-10-01 46 SVO
32 5.4 2455196 2009-12-30 2455148 2009-11-12 48 SVO
33 4.4 2455598 2011-02-05 2455556 2010-12-25 42 SVO
34 4.7 2456017 2012-03-30 2455963 2012-02-05 54 SVO
35 4.2 2456420 2013-05-07 2456370 2013-03-18 50 SVO
36 6.3 2456849 2014-07-10 2456777 2014-04-29 72 SVO
37 4.6 2457240 2015-08-05 2457185 2015-06-11 55 SVO
38 5.1 2457653 2016-09-21 2457592 2016-07-22 61 SVO
39 3.9 2458044 2017-10-17 2457999 2017-09-02 45 SVO
40 5.1 2458467 2018-12-14 2458406 2018-10-14 61 SVO
41 5.0 2458885 2020-02-05 2458814 2019-11-26 71 SVO
42 4.7 2459287 2021-03-13 2459221 2021-01-06 66 SVO
43 4.8 2459684 2022-04-14 2459628 2022-02-17 56 SVO
44 5.0 2460091 2023-05-26 2460036 2023-04-01 55 SVO
45 4.3 2460497 2024-07-05 2460443 2024-05-12 54 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.