Maxima for R Cyg
Period: 427.1, Epoch: 2456541
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E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-137 8.1 2398107 1853-09-10 2398028 1853-06-23 79 SVO
-136 7.9 2398531 1854-11-08 2398455 1854-08-24 76 SVO
-135 7.8 2398951 1856-01-02 2398883 1855-10-26 68 SVO
-134 8.1 2399388 1857-03-14 2399310 1856-12-26 78 SVO
-133 7.4 2399810 1858-05-10 2399737 1858-02-26 73 SVO
-132 7.0 2400219 1859-06-23 2400164 1859-04-29 55 SVO
-131 7.3 2400662 1860-09-08 2400591 1860-06-29 71 SVO
-130 7.7 2401083 1861-11-03 2401018 1861-08-30 65 SVO
-127 7.1 2402329 1865-04-02 2402299 1865-03-03 30 SVO
-126 8.2 2402773 1866-06-20 2402726 1866-05-04 47 SVO
-125 7.4 2403199 1867-08-20 2403154 1867-07-06 45 SVO
-124   2403627 1868-10-21 2403581 1868-09-05 46 AnHar, 1909, vol 55, p 95
-123 7.2 2404037 1869-12-05 2404008 1869-11-06 29 SVO
-122 7.7 2404492 1871-03-05 2404435 1871-01-07 57 SVO
-121 6.8 2404903 1872-04-19 2404862 1872-03-09 41 SVO
-119 6.7 2405744 1874-08-08 2405716 1874-07-11 28 SVO
-118   2406191 1875-10-29 2406143 1875-09-11 48 MiPul, 1910, vol 3, p 221
-116   2407035 1878-02-19 2406997 1878-01-12 38 AnHar, 1909, vol 55, p 95
-115   2407453 1879-04-13 2407425 1879-03-16 28 AnHar, 1909, vol 55, p 95
-114   2407872 1880-06-05 2407852 1880-05-16 20 AnHar, 1909, vol 55, p 95
-113   2408283 1881-07-21 2408279 1881-07-17 4 AnHar, 1909, vol 55, p 95
-112   2408732 1882-10-13 2408706 1882-09-17 26 AnHar, 1909, vol 55, p 95
-111   2409159 1883-12-14 2409133 1883-11-18 26 AnHar, 1909, vol 55, p 95
-110   2409589 1885-02-16 2409560 1885-01-18 29 AnHar, 1909, vol 55, p 95
-109   2409988 1886-03-22 2409987 1886-03-21 1 AnHar, 1909, vol 55, p 95
-108   2410451 1887-06-28 2410414 1887-05-22 37 AnHar, 1909, vol 55, p 95
-107   2410838 1888-07-19 2410841 1888-07-22 -3 AnHar, 1909, vol 55, p 95
-106   2411287 1889-10-11 2411268 1889-09-22 19 AnHar, 1909, vol 55, p 95
-105   2411697 1890-11-25 2411696 1890-11-24 1 AnHar, 1909, vol 55, p 95
-104 7.1 2412146 1892-02-17 2412123 1892-01-25 23 SVO
-103   2412569 1893-04-15 2412550 1893-03-27 19 AnHar, 1909, vol 55, p 95
-102   2412995 1894-06-15 2412977 1894-05-28 18 AnHar, 1909, vol 55, p 95
-101   2413413 1895-08-07 2413404 1895-07-29 9 AnHar, 1909, vol 55, p 95
-100   2413863 1896-10-30 2413831 1896-09-28 32 AnHar, 1909, vol 55, p 95
-99   2414272 1897-12-13 2414258 1897-11-29 14 AnHar, 1909, vol 55, p 95
-98   2414705 1899-02-19 2414685 1899-01-30 20 AnHar, 1909, vol 55, p 95
-97   2415123 1900-04-13 2415112 1900-04-02 11 AnHar, 1909, vol 55, p 95
-96 7.3 2415545 1901-06-09 2415539 1901-06-03 6 SVO
-95 7.6 2415978 1902-08-16 2415967 1902-08-05 11 SVO
-94 8.1 2416426 1903-11-07 2416394 1903-10-06 32 SVO
-93 7.2 2416848 1905-01-02 2416821 1904-12-06 27 SVO
-92 7.5 2417283 1906-03-13 2417248 1906-02-06 35 SVO
-91 7.4 2417711 1907-05-15 2417675 1907-04-09 36 SVO
-90 7.6 2418134 1908-07-11 2418102 1908-06-09 32 SVO
-89 6.9 2418526 1909-08-07 2418529 1909-08-10 -3 SVO
-88 8.1 2418977 1910-11-01 2418956 1910-10-11 21 SVO
-87 7.1 2419372 1911-12-01 2419383 1911-12-12 -11 SVO
-86 7.8 2419815 1913-02-16 2419810 1913-02-11 5 SVO
-85 7.2 2420220 1914-03-28 2420238 1914-04-15 -18 SVO
-84 7.4 2420641 1915-05-23 2420665 1915-06-16 -24 SVO
-83 6.9 2421049 1916-07-04 2421092 1916-08-16 -43 SVO
-82 8.0 2421491 1917-09-19 2421519 1917-10-17 -28 SVO
-81 7.1 2421899 1918-11-01 2421946 1918-12-18 -47 SVO
-80 8.2 2422347 1920-01-23 2422373 1920-02-18 -26 SVO
-79 6.9 2422741 1921-02-20 2422800 1921-04-20 -59 SVO
-78 7.4 2423187 1922-05-12 2423227 1922-06-21 -40 SVO
-77 6.8 2423586 1923-06-15 2423654 1923-08-22 -68 SVO
-76 7.7 2424034 1924-09-05 2424081 1924-10-22 -47 SVO
-75 7.1 2424453 1925-10-29 2424509 1925-12-24 -56 SVO
-74 7.0 2424895 1927-01-14 2424936 1927-02-24 -41 SVO
-73 7.2 2425327 1928-03-21 2425363 1928-04-26 -36 SVO
-72 7.4 2425759 1929-05-27 2425790 1929-06-27 -31 SVO
-71 7.0 2426177 1930-07-19 2426217 1930-08-28 -40 SVO
-70 7.5 2426624 1931-10-09 2426644 1931-10-29 -20 SVO
-69 6.9 2427032 1932-11-20 2427071 1932-12-29 -39 SVO
-68 7.9 2427471 1934-02-02 2427498 1934-03-01 -27 SVO
-67 7.3 2427891 1935-03-29 2427925 1935-05-02 -34 SVO
-66 7.8 2428332 1936-06-12 2428352 1936-07-02 -20 SVO
-65 8.0 2428779 1937-09-02 2428780 1937-09-03 -1 SVO
-64 7.4 2429190 1938-10-18 2429207 1938-11-04 -17 SVO
-63 7.9 2429628 1939-12-30 2429634 1940-01-05 -6 SVO
-62 7.6 2430056 1941-03-02 2430061 1941-03-07 -5 SVO
-61 7.2 2430461 1942-04-11 2430488 1942-05-08 -27 SVO
-60 8.4 2430909 1943-07-03 2430915 1943-07-09 -6 SVO
-59 9.1 2431337 1944-09-03 2431342 1944-09-08 -5 SVO
-58 7.5 2431741 1945-10-12 2431769 1945-11-09 -28 SVO
-57 8.5 2432201 1947-01-15 2432196 1947-01-10 5 SVO
-56 7.3 2432601 1948-02-19 2432623 1948-03-12 -22 SVO
-55 8.1 2433061 1949-05-24 2433051 1949-05-14 10 SVO
-54 6.9 2433457 1950-06-24 2433478 1950-07-15 -21 SVO
-53 7.7 2433910 1951-09-20 2433905 1951-09-15 5 SVO
-52 7.8 2434343 1952-11-26 2434332 1952-11-15 11 SVO
-51 7.3 2434756 1954-01-13 2434759 1954-01-16 -3 SVO
-50 7.7 2435193 1955-03-26 2435186 1955-03-19 7 SVO
-49 7.2 2435617 1956-05-23 2435613 1956-05-19 4 SVO
-48 8.3 2436059 1957-08-08 2436040 1957-07-20 19 SVO
-47 6.7 2436456 1958-09-09 2436467 1958-09-20 -11 SVO
-46 8.0 2436915 1959-12-12 2436894 1959-11-21 21 SVO
-45 7.1 2437316 1961-01-16 2437322 1961-01-22 -6 SVO
-44 7.9 2437755 1962-03-31 2437749 1962-03-25 6 SVO
-43 7.5 2438184 1963-06-03 2438176 1963-05-26 8 SVO
-42 7.2 2438613 1964-08-05 2438603 1964-07-26 10 SVO
-41 7.8 2439047 1965-10-13 2439030 1965-09-26 17 SVO
-40 7.2 2439463 1966-12-03 2439457 1966-11-27 6 SVO
-39 7.6 2439902 1968-02-15 2439884 1968-01-28 18 SVO
-38 7.6 2440339 1969-04-27 2440311 1969-03-30 28 SVO
-37 7.2 2440747 1970-06-09 2440738 1970-05-31 9 SVO
-36 7.8 2441181 1971-08-17 2441165 1971-08-01 16 SVO
-35 7.0 2441588 1972-09-27 2441593 1972-10-02 -5 SVO
-34 7.6 2442035 1973-12-18 2442020 1973-12-03 15 SVO
-33 7.1 2442441 1975-01-28 2442447 1975-02-03 -6 SVO
-32 8.8 2442898 1976-04-29 2442874 1976-04-05 24 SVO
-31 8.3 2443320 1977-06-25 2443301 1977-06-06 19 SVO
-30 8.2 2443742 1978-08-21 2443728 1978-08-07 14 SVO
-29 7.8 2444166 1979-10-19 2444155 1979-10-08 11 SVO
-28 8.8 2444620 1981-01-15 2444582 1980-12-08 38 SVO
-27 7.9 2445019 1982-02-18 2445009 1982-02-08 10 SVO
-26 9.3 2445487 1983-06-01 2445436 1983-04-11 51 SVO
-25 7.9 2445891 1984-07-09 2445864 1984-06-12 27 SVO
-24 8.2 2446345 1985-10-06 2446291 1985-08-13 54 SVO
-23 8.1 2446765 1986-11-30 2446718 1986-10-14 47 SVO
-22 7.7 2447177 1988-01-16 2447145 1987-12-15 32 SVO
-21 8.5 2447626 1989-04-09 2447572 1989-02-14 54 SVO
-20 7.6 2448026 1990-05-14 2447999 1990-04-17 27 SVO
-19 8.5 2448468 1991-07-30 2448426 1991-06-18 42 SVO
-18 7.7 2448882 1992-09-16 2448853 1992-08-18 29 SVO
-17 8.3 2449324 1993-12-02 2449280 1993-10-19 44 SVO
-16 7.4 2449719 1995-01-01 2449707 1994-12-20 12 SVO
-15 8.2 2450161 1996-03-18 2450135 1996-02-21 26 SVO
-14 7.2 2450543 1997-04-04 2450562 1997-04-23 -19 SVO
-13 8.4 2450995 1998-06-30 2450989 1998-06-24 6 SVO
-12 7.3 2451385 1999-07-25 2451416 1999-08-25 -31 SVO
-11 8.5 2451840 2000-10-22 2451843 2000-10-25 -3 SVO
-10 7.2 2452242 2001-11-28 2452270 2001-12-26 -28 SVO
-9 8.6 2452694 2003-02-23 2452697 2003-02-26 -3 SVO
-8 6.9 2453081 2004-03-16 2453124 2004-04-28 -43 SVO
-7 8.2 2453548 2005-06-26 2453551 2005-06-29 -3 SVO
-6 6.8 2453920 2006-07-03 2453978 2006-08-30 -58 SVO
-5 8.5 2454395 2007-10-21 2454406 2007-11-01 -11 SVO
-4 7.4 2454807 2008-12-06 2454833 2009-01-01 -26 SVO
-3 7.6 2455244 2010-02-16 2455260 2010-03-04 -16 SVO
-2 7.6 2455664 2011-04-12 2455687 2011-05-05 -23 SVO
-1 7.6 2456093 2012-06-14 2456114 2012-07-05 -21 SVO
0 7.7 2456541 2013-09-05 2456541 2013-09-05 0 SVO
1 8.2 2456981 2014-11-19 2456968 2014-11-06 13 SVO
2 7.2 2457399 2016-01-11 2457395 2016-01-07 4 SVO
3 8.4 2457856 2017-04-12 2457822 2017-03-09 34 SVO
4 7.5 2458247 2018-05-08 2458249 2018-05-10 -2 SVO
5 8.5 2458708 2019-08-12 2458677 2019-07-12 31 SVO
6 7.6 2459114 2020-09-21 2459104 2020-09-11 10 SVO
7 8.5 2459555 2021-12-06 2459531 2021-11-12 24 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.