Maxima for R Cyg
Period: 426.86, Epoch: 2444582.4
AAVSO offset: -3

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-109 8.1 2398107 1853-09-10 2398054 1853-07-19 53 SVO
-108 7.9 2398531 1854-11-08 2398481 1854-09-19 50 SVO
-107 7.8 2398951 1856-01-02 2398908 1855-11-20 43 SVO
-106 8.1 2399388 1857-03-14 2399335 1857-01-20 53 SVO
-105 7.4 2399810 1858-05-10 2399762 1858-03-23 48 SVO
-104 7.0 2400219 1859-06-23 2400189 1859-05-24 30 SVO
-103 7.3 2400662 1860-09-08 2400615 1860-07-23 47 SVO
-102 7.7 2401083 1861-11-03 2401042 1861-09-23 41 SVO
-99 7.1 2402329 1865-04-02 2402323 1865-03-27 6 SVO
-98 8.2 2402773 1866-06-20 2402750 1866-05-28 23 SVO
-97 7.4 2403199 1867-08-20 2403177 1867-07-29 22 SVO
-96   2403627 1868-10-21 2403603 1868-09-27 24 AnHar, 1909, vol 55, p 95
-95 7.2 2404037 1869-12-05 2404030 1869-11-28 7 SVO
-94 7.7 2404492 1871-03-05 2404457 1871-01-29 35 SVO
-93 6.8 2404903 1872-04-19 2404884 1872-03-31 19 SVO
-91 6.7 2405744 1874-08-08 2405738 1874-08-02 6 SVO
-90   2406191 1875-10-29 2406165 1875-10-03 26 MiPul, 1910, vol 3, p 221
-88   2407035 1878-02-19 2407018 1878-02-02 17 AnHar, 1909, vol 55, p 95
-87   2407453 1879-04-13 2407445 1879-04-05 8 AnHar, 1909, vol 55, p 95
-86   2407872 1880-06-05 2407872 1880-06-05 0 AnHar, 1909, vol 55, p 95
-85   2408283 1881-07-21 2408299 1881-08-06 -16 AnHar, 1909, vol 55, p 95
-84   2408732 1882-10-13 2408726 1882-10-07 6 AnHar, 1909, vol 55, p 95
-83   2409159 1883-12-14 2409153 1883-12-08 6 AnHar, 1909, vol 55, p 95
-82   2409589 1885-02-16 2409580 1885-02-07 9 AnHar, 1909, vol 55, p 95
-81   2409988 1886-03-22 2410006 1886-04-09 -18 AnHar, 1909, vol 55, p 95
-80   2410451 1887-06-28 2410433 1887-06-10 18 AnHar, 1909, vol 55, p 95
-79   2410838 1888-07-19 2410860 1888-08-10 -22 AnHar, 1909, vol 55, p 95
-78   2411287 1889-10-11 2411287 1889-10-11 0 AnHar, 1909, vol 55, p 95
-77   2411697 1890-11-25 2411714 1890-12-12 -17 AnHar, 1909, vol 55, p 95
-76 7.1 2412146 1892-02-17 2412141 1892-02-12 5 SVO
-75   2412569 1893-04-15 2412568 1893-04-14 1 AnHar, 1909, vol 55, p 95
-74   2412995 1894-06-15 2412994 1894-06-14 1 AnHar, 1909, vol 55, p 95
-73   2413413 1895-08-07 2413421 1895-08-15 -8 AnHar, 1909, vol 55, p 95
-72   2413863 1896-10-30 2413848 1896-10-15 15 AnHar, 1909, vol 55, p 95
-71   2414272 1897-12-13 2414275 1897-12-16 -3 AnHar, 1909, vol 55, p 95
-70   2414705 1899-02-19 2414702 1899-02-16 3 AnHar, 1909, vol 55, p 95
-69   2415123 1900-04-13 2415129 1900-04-19 -6 AnHar, 1909, vol 55, p 95
-68 7.3 2415545 1901-06-09 2415556 1901-06-20 -11 SVO
-67 7.6 2415978 1902-08-16 2415983 1902-08-21 -5 SVO
-66 8.1 2416426 1903-11-07 2416409 1903-10-21 17 SVO
-65 7.2 2416848 1905-01-02 2416836 1904-12-21 12 SVO
-64 7.5 2417283 1906-03-13 2417263 1906-02-21 20 SVO
-63 7.4 2417711 1907-05-15 2417690 1907-04-24 21 SVO
-62 7.6 2418134 1908-07-11 2418117 1908-06-24 17 SVO
-61 6.9 2418526 1909-08-07 2418544 1909-08-25 -18 SVO
-60 8.1 2418977 1910-11-01 2418971 1910-10-26 6 SVO
-59 7.1 2419372 1911-12-01 2419397 1911-12-26 -25 SVO
-58 7.8 2419815 1913-02-16 2419824 1913-02-25 -9 SVO
-57 7.2 2420220 1914-03-28 2420251 1914-04-28 -31 SVO
-56 7.4 2420641 1915-05-23 2420678 1915-06-29 -37 SVO
-55 6.9 2421049 1916-07-04 2421105 1916-08-29 -56 SVO
-54 8.0 2421491 1917-09-19 2421532 1917-10-30 -41 SVO
-53 7.1 2421899 1918-11-01 2421959 1918-12-31 -60 SVO
-52 8.2 2422347 1920-01-23 2422385 1920-03-01 -38 SVO
-51 6.9 2422741 1921-02-20 2422812 1921-05-02 -71 SVO
-50 7.4 2423187 1922-05-12 2423239 1922-07-03 -52 SVO
-49 6.8 2423586 1923-06-15 2423666 1923-09-03 -80 SVO
-48 7.7 2424034 1924-09-05 2424093 1924-11-03 -59 SVO
-47 7.1 2424453 1925-10-29 2424520 1926-01-04 -67 SVO
-46 7.0 2424895 1927-01-14 2424947 1927-03-07 -52 SVO
-45 7.2 2425327 1928-03-21 2425374 1928-05-07 -47 SVO
-44 7.4 2425759 1929-05-27 2425800 1929-07-07 -41 SVO
-43 7.0 2426177 1930-07-19 2426227 1930-09-07 -50 SVO
-42 7.5 2426624 1931-10-09 2426654 1931-11-08 -30 SVO
-41 6.9 2427032 1932-11-20 2427081 1933-01-08 -49 SVO
-40 7.9 2427471 1934-02-02 2427508 1934-03-11 -37 SVO
-39 7.3 2427891 1935-03-29 2427935 1935-05-12 -44 SVO
-38 7.8 2428332 1936-06-12 2428362 1936-07-12 -30 SVO
-37 8.0 2428779 1937-09-02 2428788 1937-09-11 -9 SVO
-36 7.4 2429190 1938-10-18 2429215 1938-11-12 -25 SVO
-35 7.9 2429628 1939-12-30 2429642 1940-01-13 -14 SVO
-34 7.6 2430056 1941-03-02 2430069 1941-03-15 -13 SVO
-33 7.2 2430461 1942-04-11 2430496 1942-05-16 -35 SVO
-32 8.4 2430909 1943-07-03 2430923 1943-07-17 -14 SVO
-31 9.1 2431337 1944-09-03 2431350 1944-09-16 -13 SVO
-30 7.5 2431741 1945-10-12 2431776 1945-11-16 -35 SVO
-29 8.5 2432201 1947-01-15 2432203 1947-01-17 -2 SVO
-28 7.3 2432601 1948-02-19 2432630 1948-03-19 -29 SVO
-27 8.1 2433061 1949-05-24 2433057 1949-05-20 4 SVO
-26 6.9 2433457 1950-06-24 2433484 1950-07-21 -27 SVO
-25 7.7 2433910 1951-09-20 2433911 1951-09-21 -1 SVO
-24 7.8 2434343 1952-11-26 2434338 1952-11-21 5 SVO
-23 7.3 2434756 1954-01-13 2434765 1954-01-22 -9 SVO
-22 7.7 2435193 1955-03-26 2435191 1955-03-24 2 SVO
-21 7.2 2435617 1956-05-23 2435618 1956-05-24 -1 SVO
-20 8.3 2436059 1957-08-08 2436045 1957-07-25 14 SVO
-19 6.7 2436456 1958-09-09 2436472 1958-09-25 -16 SVO
-18 8.0 2436915 1959-12-12 2436899 1959-11-26 16 SVO
-17 7.1 2437316 1961-01-16 2437326 1961-01-26 -10 SVO
-16 7.9 2437755 1962-03-31 2437753 1962-03-29 2 SVO
-15 7.5 2438184 1963-06-03 2438179 1963-05-29 5 SVO
-14 7.2 2438613 1964-08-05 2438606 1964-07-29 7 SVO
-13 7.8 2439047 1965-10-13 2439033 1965-09-29 14 SVO
-12 7.2 2439463 1966-12-03 2439460 1966-11-30 3 SVO
-11 7.6 2439902 1968-02-15 2439887 1968-01-31 15 SVO
-10 7.6 2440339 1969-04-27 2440314 1969-04-02 25 SVO
-9 7.2 2440747 1970-06-09 2440741 1970-06-03 6 SVO
-8 7.8 2441181 1971-08-17 2441167 1971-08-03 14 SVO
-7 7.0 2441588 1972-09-27 2441594 1972-10-03 -6 SVO
-6 7.6 2442035 1973-12-18 2442021 1973-12-04 14 SVO
-5 7.1 2442441 1975-01-28 2442448 1975-02-04 -7 SVO
-4 8.8 2442898 1976-04-29 2442875 1976-04-06 23 SVO
-3 8.3 2443320 1977-06-25 2443302 1977-06-07 18 SVO
-2 8.2 2443742 1978-08-21 2443729 1978-08-08 13 SVO
-1 7.8 2444166 1979-10-19 2444156 1979-10-09 10 SVO
0 8.8 2444620 1981-01-15 2444582 1980-12-08 38 SVO
1 7.9 2445019 1982-02-18 2445009 1982-02-08 10 SVO
2 9.3 2445487 1983-06-01 2445436 1983-04-11 51 SVO
3 7.9 2445891 1984-07-09 2445863 1984-06-11 28 SVO
4 8.2 2446345 1985-10-06 2446290 1985-08-12 55 SVO
5 8.1 2446765 1986-11-30 2446717 1986-10-13 48 SVO
6 7.7 2447177 1988-01-16 2447144 1987-12-14 33 SVO
7 8.5 2447626 1989-04-09 2447570 1989-02-12 56 SVO
8 7.6 2448026 1990-05-14 2447997 1990-04-15 29 SVO
9 8.5 2448468 1991-07-30 2448424 1991-06-16 44 SVO
10 7.7 2448882 1992-09-16 2448851 1992-08-16 31 SVO
11 8.3 2449324 1993-12-02 2449278 1993-10-17 46 SVO
12 7.4 2449719 1995-01-01 2449705 1994-12-18 14 SVO
13 8.2 2450161 1996-03-18 2450132 1996-02-18 29 SVO
14 7.2 2450543 1997-04-04 2450558 1997-04-19 -15 SVO
15 8.4 2450995 1998-06-30 2450985 1998-06-20 10 SVO
16 7.3 2451385 1999-07-25 2451412 1999-08-21 -27 SVO
17 8.5 2451840 2000-10-22 2451839 2000-10-21 1 SVO
18 7.2 2452242 2001-11-28 2452266 2001-12-22 -24 SVO
19 8.6 2452694 2003-02-23 2452693 2003-02-22 1 SVO
20 6.9 2453081 2004-03-16 2453120 2004-04-24 -39 SVO
21 8.2 2453548 2005-06-26 2453547 2005-06-25 1 SVO
22 6.8 2453920 2006-07-03 2453973 2006-08-25 -53 SVO
23 8.5 2454395 2007-10-21 2454400 2007-10-26 -5 SVO
24 7.4 2454807 2008-12-06 2454827 2008-12-26 -20 SVO
25 7.6 2455244 2010-02-16 2455254 2010-02-26 -10 SVO
26 7.6 2455664 2011-04-12 2455681 2011-04-29 -17 SVO
27 7.6 2456093 2012-06-14 2456108 2012-06-29 -15 SVO
28 7.7 2456541 2013-09-05 2456535 2013-08-30 6 SVO
29 8.2 2456981 2014-11-19 2456961 2014-10-30 20 SVO
30 7.2 2457399 2016-01-11 2457388 2015-12-31 11 SVO
31 8.4 2457856 2017-04-12 2457815 2017-03-02 41 SVO
32 7.5 2458247 2018-05-08 2458242 2018-05-03 5 SVO
33 8.5 2458708 2019-08-12 2458669 2019-07-04 39 SVO
34 7.6 2459114 2020-09-21 2459096 2020-09-03 18 SVO
35 8.5 2459555 2021-12-06 2459523 2021-11-04 32 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.