Maxima for R Col
Period: 327.87, Epoch: 2442010.6
AAVSO offset: 3

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-88   2413189 1894-12-26 2413158 1894-11-25 31 AnHar, 1909, vol 55, p 95
-87   2413508 1895-11-10 2413486 1895-10-19 22 AnHar, 1909, vol 55, p 95
-86   2413837 1896-10-04 2413814 1896-09-11 23 AnHar, 1909, vol 55, p 95
-85   2414142 1897-08-05 2414142 1897-08-05 0 AnHar, 1909, vol 55, p 95
-81   2415443 1901-02-27 2415453 1901-03-09 -10 AnHar, 1909, vol 55, p 95
-78   2416408 1903-10-20 2416437 1903-11-18 -29 AnHar, 1909, vol 55, p 95
-77   2416750 1904-09-26 2416765 1904-10-11 -15 AnHar, 1909, vol 55, p 95
-63   2421305 1917-03-17 2421355 1917-05-06 -50 PLPla, 1950, vol 26, p 5
-61 9.2 2421987 1919-01-28 2422011 1919-02-21 -24 SVO
-60 9.2 2422327 1920-01-03 2422338 1920-01-14 -11 SVO
-59 9.3 2422660 1920-12-01 2422666 1920-12-07 -6 SVO
-58 8.8 2422983 1921-10-20 2422994 1921-10-31 -11 AAVSO
-57 8.5 2423312 1922-09-14 2423322 1922-09-24 -10 AAVSO
-56   2423643 1923-08-11 2423650 1923-08-18 -7 AAVSO
-55 9.6 2423963 1924-06-26 2423978 1924-07-11 -15 AAVSO
-54 9.1 2424297 1925-05-26 2424306 1925-06-04 -9 SVO
-53 8.7 2424619 1926-04-13 2424634 1926-04-28 -15 SVO
-52 9.7 2424936 1927-02-24 2424961 1927-03-21 -25 SVO
-51 8.8 2425279 1928-02-02 2425289 1928-02-12 -10 SVO
-50 8.9 2425613 1929-01-01 2425617 1929-01-05 -4 SVO
-49 9.0 2425937 1929-11-21 2425945 1929-11-29 -8 SVO
-48 8.3 2426258 1930-10-08 2426273 1930-10-23 -15 AAVSO
-47   2426593 1931-09-08 2426601 1931-09-16 -8 AAVSO
-46   2426927 1932-08-07 2426929 1932-08-09 -2 AAVSO
-45 8.4 2427253 1933-06-29 2427256 1933-07-02 -3 SVO
-44 9.9 2427594 1934-06-05 2427584 1934-05-26 10 AAVSO
-43 8.2 2427916 1935-04-23 2427912 1935-04-19 4 SVO
-42 9.6 2428247 1936-03-19 2428240 1936-03-12 7 SVO
-41 8.8 2428582 1937-02-17 2428568 1937-02-03 14 SVO
-40 8.9 2428913 1938-01-14 2428896 1937-12-28 17 AAVSO
-39 8.9 2429241 1938-12-08 2429224 1938-11-21 17 SVO
-38 8.7 2429574 1939-11-06 2429552 1939-10-15 22 SVO
-37 9.0 2429895 1940-09-22 2429879 1940-09-06 16 SVO
-36 9.5 2430222 1941-08-15 2430207 1941-07-31 15 AAVSO
-35 10.0 2430543 1942-07-02 2430535 1942-06-24 8 AAVSO
-34 8.0 2430865 1943-05-20 2430863 1943-05-18 2 AAVSO
-33 9.3 2431191 1944-04-10 2431191 1944-04-10 0 SVO
-32 8.3 2431528 1945-03-13 2431519 1945-03-04 9 SVO
-31 9.7 2431860 1946-02-08 2431847 1946-01-26 13 SVO
-30 8.9 2432188 1947-01-02 2432175 1946-12-20 13 SVO
-29 9.1 2432511 1947-11-21 2432502 1947-11-12 9 SVO
-28 8.4 2432837 1948-10-12 2432830 1948-10-05 7 SVO
-27 9.0 2433163 1949-09-03 2433158 1949-08-29 5 SVO
-26 8.6 2433493 1950-07-30 2433486 1950-07-23 7 SVO
-25 9.3 2433823 1951-06-25 2433814 1951-06-16 9 SVO
-24 8.6 2434149 1952-05-16 2434142 1952-05-09 7 SVO
-23 8.4 2434470 1953-04-02 2434470 1953-04-02 0 SVO
-22 9.4 2434802 1954-02-28 2434797 1954-02-23 5 SVO
-21 9.5 2435130 1955-01-22 2435125 1955-01-17 5 SVO
-20 8.7 2435448 1955-12-06 2435453 1955-12-11 -5 SVO
-19 8.6 2435775 1956-10-28 2435781 1956-11-03 -6 SVO
-18 9.4 2436113 1957-10-01 2436109 1957-09-27 4 SVO
-17 8.7 2436438 1958-08-22 2436437 1958-08-21 1 SVO
-16 8.4 2436768 1959-07-18 2436765 1959-07-15 3 SVO
-15 9.0 2437101 1960-06-15 2437093 1960-06-07 8 SVO
-14 8.3 2437427 1961-05-07 2437420 1961-04-30 7 SVO
-13 8.5 2437757 1962-04-02 2437748 1962-03-24 9 SVO
-12 8.7 2438091 1963-03-02 2438076 1963-02-15 15 SVO
-11 8.8 2438424 1964-01-29 2438404 1964-01-09 20 SVO
-10 9.1 2438756 1964-12-26 2438732 1964-12-02 24 SVO
-9 8.5 2439080 1965-11-15 2439060 1965-10-26 20 SVO
-8 8.6 2439411 1966-10-12 2439388 1966-09-19 23 SVO
-7 8.8 2439736 1967-09-02 2439716 1967-08-13 20 SVO
-6   2440064 1968-07-26 2440043 1968-07-05 21 AAVSO
-5 8.5 2440385 1969-06-12 2440371 1969-05-29 14 SVO
-4 9.1 2440713 1970-05-06 2440699 1970-04-22 14 SVO
-3 8.2 2441032 1971-03-21 2441027 1971-03-16 5 SVO
-2 9.0 2441358 1972-02-10 2441355 1972-02-07 3 SVO
-1 8.6 2441687 1973-01-04 2441683 1972-12-31 4 SVO
0 8.4 2442014 1973-11-27 2442011 1973-11-24 3 SVO
1 8.7 2442334 1974-10-13 2442338 1974-10-17 -4 SVO
2 8.1 2442663 1975-09-07 2442666 1975-09-10 -3 SVO
3 8.1 2443003 1976-08-12 2442994 1976-08-03 9 AAVSO
4   2443304 1977-06-09 2443322 1977-06-27 -18 AAVSO
5 9.4 2443633 1978-05-04 2443650 1978-05-21 -17 AAVSO
6 8.2 2443966 1979-04-02 2443978 1979-04-14 -12 AAVSO
7 9.6 2444296 1980-02-26 2444306 1980-03-07 -10 AAVSO
8 7.9 2444618 1981-01-13 2444634 1981-01-29 -16 SVO
9 8.6 2444948 1981-12-09 2444961 1981-12-22 -13 SVO
10 8.4 2445279 1982-11-05 2445289 1982-11-15 -10 SVO
11 8.9 2445614 1983-10-06 2445617 1983-10-09 -3 SVO
12 8.2 2445943 1984-08-30 2445945 1984-09-01 -2 AAVSO
13 9.0 2446273 1985-07-26 2446273 1985-07-26 0 AAVSO
14 9.9 2446603 1986-06-21 2446601 1986-06-19 2 AAVSO
15 7.9 2446908 1987-04-22 2446929 1987-05-13 -21 SVO
16   2447250 1988-03-29 2447257 1988-04-05 -7 AAVSO
17 9.0 2447577 1989-02-19 2447584 1989-02-26 -7 SVO
18 9.1 2447898 1990-01-06 2447912 1990-01-20 -14 SVO
19 8.4 2448225 1990-11-29 2448240 1990-12-14 -15 SVO
20 9.3 2448558 1991-10-28 2448568 1991-11-07 -10 SVO
21 8.8 2448888 1992-09-22 2448896 1992-09-30 -8 SVO
22   2449213 1993-08-13 2449224 1993-08-24 -11 AAVSO
23   2449538 1994-07-04 2449552 1994-07-18 -14 AAVSO
24 9.2 2449867 1995-05-29 2449879 1995-06-10 -12 SVO
25 8.4 2450194 1996-04-20 2450207 1996-05-03 -13 SVO
26 8.1 2450527 1997-03-19 2450535 1997-03-27 -8 SVO
27 8.1 2450855 1998-02-10 2450863 1998-02-18 -8 SVO
28 9.0 2451180 1999-01-01 2451191 1999-01-12 -11 SVO
29 8.3 2451511 1999-11-28 2451519 1999-12-06 -8 SVO
30 8.8 2451845 2000-10-27 2451847 2000-10-29 -2 SVO
31 8.1 2452171 2001-09-18 2452175 2001-09-22 -4 SVO
32   2452499 2002-08-12 2452502 2002-08-15 -3 AAVSO
33   2452823 2003-07-02 2452830 2003-07-09 -7 AAVSO
34   2453159 2004-06-02 2453158 2004-06-01 1 AAVSO
35   2453469 2005-04-08 2453486 2005-04-25 -17 AAVSO
36   2453803 2006-03-08 2453814 2006-03-19 -11 AAVSO
37 8.7 2454142 2007-02-10 2454142 2007-02-10 0 SVO
38 8.0 2454465 2007-12-30 2454470 2008-01-04 -5 SVO
39 10.1 2454802 2008-12-01 2454798 2008-11-27 4 AAVSO
40 8.2 2455130 2009-10-25 2455125 2009-10-20 5 SVO
41 9.8 2455458 2010-09-18 2455453 2010-09-13 5 AAVSO
42 8.0 2455784 2011-08-10 2455781 2011-08-07 3 AAVSO
43   2456112 2012-07-03 2456109 2012-06-30 3 AAVSO
44 8.4 2456435 2013-05-22 2456437 2013-05-24 -2 SVO
45 9.3 2456772 2014-04-24 2456765 2014-04-17 7 SVO
46 8.2 2457093 2015-03-11 2457093 2015-03-11 0 SVO
47 8.7 2457426 2016-02-07 2457420 2016-02-01 6 SVO
48 9.1 2457757 2017-01-03 2457748 2016-12-25 9 SVO
49 8.1 2458083 2017-11-25 2458076 2017-11-18 7 SVO
50 8.9 2458413 2018-10-21 2458404 2018-10-12 9 SVO
51 8.2 2458736 2019-09-09 2458732 2019-09-05 4 SVO
52 8.7 2459075 2020-08-13 2459060 2020-07-29 15 SVO
53 7.9 2459393 2021-06-27 2459388 2021-06-22 5 SVO
54 9.1 2459730 2022-05-30 2459716 2022-05-16 14 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.