Maxima for chi Cyg
Period: 408.05, Epoch: 2442140
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-258   2337151 1686-10-19 2336863 1686-01-04 288 AnHar, 1909, vol 55, p 95
-257 4.9 2337552 1687-11-24 2337271 1687-02-16 281 SVO
-256   2337956 1689-01-01 2337679 1688-03-30 277 AnHar, 1909, vol 55, p 95
-255   2338360 1690-02-09 2338087 1689-05-12 273 AnHar, 1909, vol 55, p 95
-252   2339572 1693-06-05 2339311 1692-09-17 261 AnHar, 1909, vol 55, p 95
-251   2339987 1694-07-25 2339719 1693-10-30 268 AnHar, 1909, vol 55, p 95
-250   2340389 1695-08-31 2340128 1694-12-13 261 AnHar, 1909, vol 55, p 95
-245   2342417 1701-03-21 2342168 1700-07-15 249 AnHar, 1909, vol 55, p 95
-244   2342817 1702-04-25 2342576 1701-08-27 241 AnHar, 1909, vol 55, p 95
-241   2344044 1705-09-03 2343800 1705-01-02 244 AnHar, 1909, vol 55, p 95
-240   2344437 1706-10-01 2344208 1706-02-14 229 AnHar, 1909, vol 55, p 95
-239   2344833 1707-11-01 2344616 1707-03-29 217 AnHar, 1909, vol 55, p 95
-238   2345262 1709-01-03 2345024 1708-05-10 238 AnHar, 1909, vol 55, p 95
-235   2346476 1712-05-01 2346248 1711-09-16 228 AnHar, 1909, vol 55, p 95
-233   2347291 1714-07-25 2347064 1713-12-10 227 AnHar, 1909, vol 55, p 95
-232   2347694 1715-09-01 2347472 1715-01-22 222 AnHar, 1909, vol 55, p 95
-231   2348105 1716-10-16 2347880 1716-03-05 225 AnHar, 1909, vol 55, p 95
-230   2348497 1717-11-12 2348289 1717-04-18 208 AnHar, 1909, vol 55, p 95
-229   2348912 1719-01-01 2348697 1718-05-31 215 AnHar, 1909, vol 55, p 95
-223 5.3 2351369 1725-09-23 2351145 1725-02-11 224 SVO
-222 5.4 2351766 1726-10-25 2351553 1726-03-26 213 SVO
-217   2353791 1732-05-11 2353593 1731-10-26 198 AnHar, 1909, vol 55, p 95
-214   2355015 1735-09-17 2354817 1735-03-03 198 AnHar, 1909, vol 55, p 95
-212   2355818 1737-11-28 2355633 1737-05-27 185 AnHar, 1909, vol 55, p 95
-211   2356217 1739-01-01 2356041 1738-07-09 176 AnHar, 1909, vol 55, p 95
-203   2359451 1747-11-09 2359306 1747-06-17 145 AnHar, 1909, vol 55, p 95
-195   2362681 1756-09-12 2362570 1756-05-24 111 AnHar, 1909, vol 55, p 95
-194   2363082 1757-10-18 2362978 1757-07-06 104 AnHar, 1909, vol 55, p 95
-193   2363500 1758-12-10 2363386 1758-08-18 114 SVO
-171   2372475 1783-07-07 2372363 1783-03-17 112 AnHar, 1909, vol 55, p 95
-170 4.7 2372867 1784-08-02 2372772 1784-04-29 95 SVO
-169   2373263 1785-09-02 2373180 1785-06-11 83 AnHar, 1909, vol 55, p 95
-157   2378147 1799-01-16 2378076 1798-11-06 71 AnHar, 1909, vol 55, p 95
-142 5.1 2384257 1815-10-10 2384197 1815-08-11 60 SVO
-141   2384660 1816-11-16 2384605 1816-09-22 55 AnHar, 1909, vol 55, p 95
-140   2385076 1818-01-06 2385013 1817-11-04 63 AnHar, 1909, vol 55, p 95
-137   2386269 1821-04-13 2386237 1821-03-12 32 AnHar, 1909, vol 55, p 95
-136   2386666 1822-05-15 2386645 1822-04-24 21 AnHar, 1909, vol 55, p 95
-135   2387074 1823-06-27 2387053 1823-06-06 21 AnHar, 1909, vol 55, p 95
-134   2387479 1824-08-05 2387461 1824-07-18 18 AnHar, 1909, vol 55, p 95
-133   2387886 1825-09-16 2387869 1825-08-30 17 AnHar, 1909, vol 55, p 95
-132   2388302 1826-11-06 2388277 1826-10-12 25 AnHar, 1909, vol 55, p 95
-131   2388692 1827-12-01 2388685 1827-11-24 7 AnHar, 1909, vol 55, p 95
-129   2389524 1830-03-12 2389502 1830-02-18 22 AnHar, 1909, vol 55, p 95
-119   2393564 1841-04-03 2393582 1841-04-21 -18 AnHar, 1909, vol 55, p 95
-118 5.0 2393980 1842-05-24 2393990 1842-06-03 -10 SVO
-117 4.6 2394386 1843-07-04 2394398 1843-07-16 -12 SVO
-116 5.1 2394793 1844-08-14 2394806 1844-08-27 -13 SVO
-115 4.2 2395207 1845-10-02 2395214 1845-10-09 -7 SVO
-114 5.8 2395624 1846-11-23 2395622 1846-11-21 2 SVO
-113 4.0 2396019 1847-12-23 2396030 1848-01-03 -11 SVO
-112 6.6 2396432 1849-02-08 2396438 1849-02-14 -6 SVO
-111   2396832 1850-03-15 2396846 1850-03-29 -14 AnHar, 1909, vol 55, p 95
-110   2397226 1851-04-13 2397255 1851-05-12 -29 AnHar, 1909, vol 55, p 95
-109 4.5 2397638 1852-05-29 2397663 1852-06-23 -25 SVO
-108 4.6 2398060 1853-07-25 2398071 1853-08-05 -11 SVO
-107 4.6 2398452 1854-08-21 2398479 1854-09-17 -27 SVO
-106 4.6 2398866 1855-10-09 2398887 1855-10-30 -21 SVO
-105 4.4 2399273 1856-11-19 2399295 1856-12-11 -22 SVO
-104 4.6 2399689 1858-01-09 2399703 1858-01-23 -14 SVO
-103 7.2 2400103 1859-02-27 2400111 1859-03-07 -8 SVO
-102 5.3 2400501 1860-03-31 2400519 1860-04-18 -18 SVO
-101 7.0 2400918 1861-05-22 2400927 1861-05-31 -9 SVO
-100 4.6 2401316 1862-06-24 2401335 1862-07-13 -19 SVO
-99 5.0 2401751 1863-09-02 2401743 1863-08-25 8 SVO
-98 4.0 2402156 1864-10-11 2402151 1864-10-06 5 SVO
-97 4.3 2402568 1865-11-27 2402559 1865-11-18 9 SVO
-96 4.3 2402990 1867-01-23 2402967 1866-12-31 23 SVO
-95 4.7 2403411 1868-03-19 2403375 1868-02-12 36 SVO
-94 5.1 2403820 1869-05-02 2403783 1869-03-26 37 SVO
-93 4.8 2404222 1870-06-08 2404191 1870-05-08 31 SVO
-92 4.3 2404624 1871-07-15 2404599 1871-06-20 25 SVO
-91 4.7 2405035 1872-08-29 2405007 1872-08-01 28 SVO
-90 4.5 2405437 1873-10-05 2405416 1873-09-14 21 SVO
-89 4.7 2405845 1874-11-17 2405824 1874-10-27 21 SVO
-88 4.1 2406232 1875-12-09 2406232 1875-12-09 0 SVO
-87 4.4 2406643 1877-01-23 2406640 1877-01-20 3 SVO
-86 4.7 2407054 1878-03-10 2407048 1878-03-04 6 SVO
-85 4.5 2407464 1879-04-24 2407456 1879-04-16 8 SVO
-84 4.5 2407867 1880-05-31 2407864 1880-05-28 3 SVO
-83 4.7 2408274 1881-07-12 2408272 1881-07-10 2 SVO
-82 4.2 2408694 1882-09-05 2408680 1882-08-22 14 SVO
-81 4.3 2409092 1883-10-08 2409088 1883-10-04 4 SVO
-80 5.0 2409512 1884-12-01 2409496 1884-11-15 16 SVO
-79 4.5 2409924 1886-01-17 2409904 1885-12-28 20 SVO
-77   2410751 1888-04-23 2410720 1888-03-23 31 AnHar, 1909, vol 55, p 95
-76   2411142 1889-05-19 2411128 1889-05-05 14 AnHar, 1909, vol 55, p 95
-75 4.3 2411550 1890-07-01 2411536 1890-06-17 14 SVO
-74 5.3 2411962 1891-08-17 2411944 1891-07-30 18 SVO
-73   2412360 1892-09-18 2412352 1892-09-10 8 AnHar, 1909, vol 55, p 95
-72 4.5 2412784 1893-11-16 2412760 1893-10-23 24 SVO
-71 4.7 2413192 1894-12-29 2413168 1894-12-05 24 SVO
-70   2413579 1896-01-20 2413577 1896-01-18 2 AnHar, 1909, vol 55, p 95
-69 5.0 2414003 1897-03-19 2413985 1897-03-01 18 SVO
-68   2414392 1898-04-12 2414393 1898-04-13 -1 AnHar, 1909, vol 55, p 95
-67 4.4 2414807 1899-06-01 2414801 1899-05-26 6 SVO
-66 5.4 2415214 1900-07-13 2415209 1900-07-08 5 SVO
-65 4.7 2415618 1901-08-21 2415617 1901-08-20 1 SVO
-64 4.5 2416020 1902-09-27 2416025 1902-10-02 -5 SVO
-63 5.0 2416432 1903-11-13 2416433 1903-11-14 -1 SVO
-62 4.4 2416836 1904-12-21 2416841 1904-12-26 -5 SVO
-61 4.5 2417234 1906-01-23 2417249 1906-02-07 -15 SVO
-60 4.7 2417654 1907-03-19 2417657 1907-03-22 -3 SVO
-59 5.1 2418049 1908-04-17 2418065 1908-05-03 -16 SVO
-58 4.1 2418445 1909-05-18 2418473 1909-06-15 -28 SVO
-57 5.2 2418855 1910-07-02 2418881 1910-07-28 -26 SVO
-56 4.3 2419261 1911-08-12 2419289 1911-09-09 -28 SVO
-55 5.4 2419677 1912-10-01 2419697 1912-10-21 -20 SVO
-54 5.5 2420087 1913-11-15 2420105 1913-12-03 -18 SVO
-53 4.5 2420476 1914-12-09 2420513 1915-01-15 -37 SVO
-52 5.8 2420884 1916-01-21 2420921 1916-02-27 -37 SVO
-51 5.8 2421293 1917-03-05 2421329 1917-04-10 -36 SVO
-50 4.8 2421690 1918-04-06 2421738 1918-05-24 -48 SVO
-49 6.2 2422103 1919-05-24 2422146 1919-07-06 -43 SVO
-48 5.3 2422517 1920-07-11 2422554 1920-08-17 -37 SVO
-47 5.5 2422930 1921-08-28 2422962 1921-09-29 -32 SVO
-46 4.6 2423329 1922-10-01 2423370 1922-11-11 -41 SVO
-45 4.4 2423732 1923-11-08 2423778 1923-12-24 -46 SVO
-44 5.5 2424147 1924-12-27 2424186 1925-02-04 -39 SVO
-43 4.0 2424547 1926-01-31 2424594 1926-03-19 -47 SVO
-42 4.9 2424947 1927-03-07 2425002 1927-05-01 -55 SVO
-41 4.9 2425376 1928-05-09 2425410 1928-06-12 -34 SVO
-40 4.7 2425793 1929-06-30 2425818 1929-07-25 -25 SVO
-39 6.3 2426209 1930-08-20 2426226 1930-09-06 -17 SVO
-38 5.1 2426607 1931-09-22 2426634 1931-10-19 -27 SVO
-37 5.3 2427032 1932-11-20 2427042 1932-11-30 -10 SVO
-36 4.8 2427428 1933-12-21 2427450 1934-01-12 -22 SVO
-35 4.9 2427845 1935-02-11 2427858 1935-02-24 -13 SVO
-34 4.5 2428260 1936-04-01 2428266 1936-04-07 -6 SVO
-33 6.2 2428669 1937-05-15 2428674 1937-05-20 -5 SVO
-32 5.0 2429077 1938-06-27 2429082 1938-07-02 -5 SVO
-31 5.7 2429493 1939-08-17 2429490 1939-08-14 3 SVO
-30 5.1 2429908 1940-10-05 2429899 1940-09-26 9 SVO
-29 5.2 2430309 1941-11-10 2430307 1941-11-08 2 SVO
-28 4.8 2430716 1942-12-22 2430715 1942-12-21 1 SVO
-27 5.1 2431121 1944-01-31 2431123 1944-02-02 -2 SVO
-26 5.0 2431534 1945-03-19 2431531 1945-03-16 3 SVO
-25 4.4 2431937 1946-04-26 2431939 1946-04-28 -2 SVO
-24 5.8 2432341 1947-06-04 2432347 1947-06-10 -6 SVO
-23 4.9 2432754 1948-07-21 2432755 1948-07-22 -1 SVO
-22 5.8 2433172 1949-09-12 2433163 1949-09-03 9 SVO
-21 4.8 2433576 1950-10-21 2433571 1950-10-16 5 SVO
-20 5.2 2433979 1951-11-28 2433979 1951-11-28 0 SVO
-19 4.7 2434392 1953-01-14 2434387 1953-01-09 5 SVO
-18 6.0 2434815 1954-03-13 2434795 1954-02-21 20 SVO
-17 5.3 2435208 1955-04-10 2435203 1955-04-05 5 SVO
-16 4.8 2435619 1956-05-25 2435611 1956-05-17 8 SVO
-15 5.4 2436024 1957-07-04 2436019 1957-06-29 5 SVO
-14 4.9 2436427 1958-08-11 2436427 1958-08-11 0 SVO
-13 4.6 2436824 1959-09-12 2436835 1959-09-23 -11 SVO
-12 4.3 2437223 1960-10-15 2437243 1960-11-04 -20 SVO
-11 4.8 2437631 1961-11-27 2437651 1961-12-17 -20 SVO
-10 4.8 2438030 1962-12-31 2438060 1963-01-30 -30 SVO
-9 5.3 2438446 1964-02-20 2438468 1964-03-13 -22 SVO
-8 4.4 2438841 1965-03-21 2438876 1965-04-25 -35 SVO
-7 5.8 2439246 1966-04-30 2439284 1966-06-07 -38 SVO
-6 5.1 2439660 1967-06-18 2439692 1967-07-20 -32 SVO
-5 5.1 2440067 1968-07-29 2440100 1968-08-31 -33 SVO
-4 5.0 2440482 1969-09-17 2440508 1969-10-13 -26 SVO
-3 4.8 2440895 1970-11-04 2440916 1970-11-25 -21 SVO
-2 5.1 2441316 1971-12-30 2441324 1972-01-07 -8 SVO
-1 4.4 2441722 1973-02-08 2441732 1973-02-18 -10 SVO
0 5.1 2442140 1974-04-02 2442140 1974-04-02 0 SVO
1 4.7 2442555 1975-05-22 2442548 1975-05-15 7 SVO
2 5.8 2442974 1976-07-14 2442956 1976-06-26 18 SVO
3 5.2 2443389 1977-09-02 2443364 1977-08-08 25 SVO
4 4.2 2443782 1978-09-30 2443772 1978-09-20 10 SVO
5 5.0 2444198 1979-11-20 2444180 1979-11-02 18 SVO
6 4.2 2444605 1980-12-31 2444588 1980-12-14 17 SVO
7 5.8 2445025 1982-02-24 2444996 1982-01-26 29 SVO
8 5.1 2445427 1983-04-02 2445404 1983-03-10 23 SVO
9 5.1 2445847 1984-05-26 2445812 1984-04-21 35 SVO
10 6.2 2446257 1985-07-10 2446221 1985-06-04 36 SVO
11 4.8 2446650 1986-08-07 2446629 1986-07-17 21 SVO
12 6.4 2447070 1987-10-01 2447037 1987-08-29 33 SVO
13 4.9 2447482 1988-11-16 2447445 1988-10-10 37 SVO
14 6.2 2447879 1989-12-18 2447853 1989-11-22 26 SVO
15 5.2 2448280 1991-01-23 2448261 1991-01-04 19 SVO
16 5.5 2448686 1992-03-04 2448669 1992-02-16 17 SVO
17 4.6 2449086 1993-04-08 2449077 1993-03-30 9 SVO
18 6.0 2449494 1994-05-21 2449485 1994-05-12 9 SVO
19 5.3 2449902 1995-07-03 2449893 1995-06-24 9 SVO
20 5.8 2450310 1996-08-14 2450301 1996-08-05 9 SVO
21 4.7 2450714 1997-09-22 2450709 1997-09-17 5 SVO
22 5.3 2451125 1998-11-07 2451117 1998-10-30 8 SVO
23 4.9 2451535 1999-12-22 2451525 1999-12-12 10 SVO
24 5.3 2451931 2001-01-21 2451933 2001-01-23 -2 SVO
25 4.5 2452329 2002-02-23 2452341 2002-03-07 -12 SVO
26 5.5 2452733 2003-04-03 2452749 2003-04-19 -16 SVO
27 4.8 2453147 2004-05-21 2453157 2004-05-31 -10 SVO
28 5.1 2453551 2005-06-29 2453565 2005-07-13 -14 SVO
29 4.4 2453962 2006-08-14 2453973 2006-08-25 -11 SVO
30 5.9 2454376 2007-10-02 2454382 2007-10-08 -6 SVO
31 4.6 2454787 2008-11-16 2454790 2008-11-19 -3 SVO
32 5.4 2455196 2009-12-30 2455198 2010-01-01 -2 SVO
33 4.4 2455598 2011-02-05 2455606 2011-02-13 -8 SVO
34 4.7 2456017 2012-03-30 2456014 2012-03-27 3 SVO
35 4.5 2456431 2013-05-18 2456422 2013-05-09 9 SVO
36 6.3 2456849 2014-07-10 2456830 2014-06-21 19 SVO
37 4.6 2457240 2015-08-05 2457238 2015-08-03 2 SVO
38 5.1 2457653 2016-09-21 2457646 2016-09-14 7 SVO
39 3.9 2458044 2017-10-17 2458054 2017-10-27 -10 SVO
40 5.1 2458467 2018-12-14 2458462 2018-12-09 5 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.