Maxima for R Col
Period: 327.93, Epoch: 2442010.2
AAVSO offset: 3

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-88   2413189 1894-12-26 2413153 1894-11-20 36 AnHar, 1909, vol 55, p 95
-87   2413508 1895-11-10 2413480 1895-10-13 28 AnHar, 1909, vol 55, p 95
-86   2413837 1896-10-04 2413808 1896-09-05 29 AnHar, 1909, vol 55, p 95
-85   2414142 1897-08-05 2414136 1897-07-30 6 AnHar, 1909, vol 55, p 95
-81   2415443 1901-02-27 2415448 1901-03-04 -5 AnHar, 1909, vol 55, p 95
-79   2416084 1902-11-30 2416104 1902-12-20 -20 SVO
-78   2416420 1903-11-01 2416432 1903-11-13 -12 SVO
-77   2416742 1904-09-18 2416760 1904-10-06 -18 SVO
-76   2417065 1905-08-07 2417088 1905-08-30 -23 SVO
-72   2418381 1909-03-15 2418399 1909-04-02 -18 SVO
-71   2418705 1910-02-02 2418727 1910-02-24 -22 SVO
-69   2419360 1911-11-19 2419383 1911-12-12 -23 SVO
-68   2419695 1912-10-19 2419711 1912-11-04 -16 SVO
-67   2420015 1913-09-04 2420039 1913-09-28 -24 SVO
-63   2421330 1917-04-11 2421351 1917-05-02 -21 SVO
-62   2421660 1918-03-07 2421679 1918-03-26 -19 SVO
-61 9.2 2421987 1919-01-28 2422007 1919-02-17 -20 SVO
-60 9.2 2422327 1920-01-03 2422335 1920-01-11 -8 SVO
-59 9.3 2422660 1920-12-01 2422662 1920-12-03 -2 SVO
-58 8.8 2422983 1921-10-20 2422990 1921-10-27 -7 AAVSO
-57 8.5 2423312 1922-09-14 2423318 1922-09-20 -6 AAVSO
-56   2423643 1923-08-11 2423646 1923-08-14 -3 AAVSO
-55 9.6 2423963 1924-06-26 2423974 1924-07-07 -11 AAVSO
-54 9.1 2424297 1925-05-26 2424302 1925-05-31 -5 SVO
-53 8.7 2424619 1926-04-13 2424630 1926-04-24 -11 SVO
-52 9.7 2424936 1927-02-24 2424958 1927-03-18 -22 SVO
-51 8.8 2425279 1928-02-02 2425286 1928-02-09 -7 SVO
-50 8.9 2425613 1929-01-01 2425614 1929-01-02 -1 SVO
-49 9.0 2425937 1929-11-21 2425942 1929-11-26 -5 SVO
-48 8.3 2426258 1930-10-08 2426270 1930-10-20 -12 AAVSO
-47   2426593 1931-09-08 2426598 1931-09-13 -5 AAVSO
-46   2426927 1932-08-07 2426926 1932-08-06 1 AAVSO
-45 8.4 2427253 1933-06-29 2427253 1933-06-29 0 SVO
-44 9.9 2427594 1934-06-05 2427581 1934-05-23 13 AAVSO
-43 8.2 2427916 1935-04-23 2427909 1935-04-16 7 SVO
-42 9.6 2428247 1936-03-19 2428237 1936-03-09 10 SVO
-41 8.8 2428582 1937-02-17 2428565 1937-01-31 17 SVO
-40 8.9 2428913 1938-01-14 2428893 1937-12-25 20 AAVSO
-39 8.9 2429241 1938-12-08 2429221 1938-11-18 20 SVO
-38 8.7 2429574 1939-11-06 2429549 1939-10-12 25 SVO
-37 9.0 2429895 1940-09-22 2429877 1940-09-04 18 SVO
-36 9.5 2430222 1941-08-15 2430205 1941-07-29 17 AAVSO
-35 10.0 2430543 1942-07-02 2430533 1942-06-22 10 AAVSO
-34 8.0 2430865 1943-05-20 2430861 1943-05-16 4 AAVSO
-33 9.3 2431191 1944-04-10 2431189 1944-04-08 2 SVO
-32 8.3 2431528 1945-03-13 2431517 1945-03-02 11 SVO
-31 9.7 2431860 1946-02-08 2431844 1946-01-23 16 SVO
-30 8.9 2432188 1947-01-02 2432172 1946-12-17 16 SVO
-29 9.1 2432511 1947-11-21 2432500 1947-11-10 11 SVO
-28 8.4 2432837 1948-10-12 2432828 1948-10-03 9 SVO
-27 9.0 2433163 1949-09-03 2433156 1949-08-27 7 SVO
-26 8.6 2433493 1950-07-30 2433484 1950-07-21 9 SVO
-25 9.3 2433823 1951-06-25 2433812 1951-06-14 11 SVO
-24 8.6 2434149 1952-05-16 2434140 1952-05-07 9 SVO
-23 8.4 2434470 1953-04-02 2434468 1953-03-31 2 SVO
-22 9.4 2434802 1954-02-28 2434796 1954-02-22 6 SVO
-21 9.5 2435130 1955-01-22 2435124 1955-01-16 6 SVO
-20 8.7 2435448 1955-12-06 2435452 1955-12-10 -4 SVO
-19 8.6 2435775 1956-10-28 2435780 1956-11-02 -5 SVO
-18 9.4 2436113 1957-10-01 2436108 1957-09-26 5 SVO
-17 8.7 2436438 1958-08-22 2436435 1958-08-19 3 SVO
-16 8.4 2436768 1959-07-18 2436763 1959-07-13 5 SVO
-15 9.0 2437101 1960-06-15 2437091 1960-06-05 10 SVO
-14 8.3 2437427 1961-05-07 2437419 1961-04-29 8 SVO
-13 8.5 2437757 1962-04-02 2437747 1962-03-23 10 SVO
-12 8.7 2438091 1963-03-02 2438075 1963-02-14 16 SVO
-11 8.8 2438424 1964-01-29 2438403 1964-01-08 21 SVO
-10 9.1 2438756 1964-12-26 2438731 1964-12-01 25 SVO
-9 8.5 2439080 1965-11-15 2439059 1965-10-25 21 SVO
-8 8.6 2439411 1966-10-12 2439387 1966-09-18 24 SVO
-7 8.8 2439736 1967-09-02 2439715 1967-08-12 21 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 2441026 1971-03-15 6 SVO
-2 9.0 2441358 1972-02-10 2441354 1972-02-06 4 SVO
-1 8.6 2441687 1973-01-04 2441682 1972-12-30 5 SVO
0 8.4 2442014 1973-11-27 2442010 1973-11-23 4 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 2444962 1981-12-23 -14 SVO
10 8.4 2445279 1982-11-05 2445290 1982-11-16 -11 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 2447585 1989-02-27 -8 SVO
18 9.1 2447898 1990-01-06 2447913 1990-01-21 -15 SVO
19 8.4 2448225 1990-11-29 2448241 1990-12-15 -16 SVO
20 9.3 2448558 1991-10-28 2448569 1991-11-08 -11 SVO
21 8.8 2448888 1992-09-22 2448897 1992-10-01 -9 SVO
22   2449213 1993-08-13 2449225 1993-08-25 -12 AAVSO
23   2449538 1994-07-04 2449553 1994-07-19 -15 AAVSO
24 9.2 2449867 1995-05-29 2449881 1995-06-12 -14 SVO
25 8.4 2450194 1996-04-20 2450208 1996-05-04 -14 SVO
26 8.1 2450527 1997-03-19 2450536 1997-03-28 -9 SVO
27 8.1 2450855 1998-02-10 2450864 1998-02-19 -9 SVO
28 9.0 2451180 1999-01-01 2451192 1999-01-13 -12 SVO
29 8.3 2451511 1999-11-28 2451520 1999-12-07 -9 SVO
30 8.8 2451845 2000-10-27 2451848 2000-10-30 -3 SVO
31 8.1 2452171 2001-09-18 2452176 2001-09-23 -5 SVO
32   2452499 2002-08-12 2452504 2002-08-17 -5 AAVSO
33   2452823 2003-07-02 2452832 2003-07-11 -9 AAVSO
34   2453159 2004-06-02 2453160 2004-06-03 -1 AAVSO
35   2453469 2005-04-08 2453488 2005-04-27 -19 AAVSO
36   2453803 2006-03-08 2453816 2006-03-21 -13 AAVSO
37 8.7 2454142 2007-02-10 2454144 2007-02-12 -2 SVO
38 8.0 2454465 2007-12-30 2454472 2008-01-06 -7 SVO
39 10.1 2454802 2008-12-01 2454799 2008-11-28 3 AAVSO
40 8.2 2455130 2009-10-25 2455127 2009-10-22 3 SVO
41 9.8 2455458 2010-09-18 2455455 2010-09-15 3 AAVSO
42 8.0 2455784 2011-08-10 2455783 2011-08-09 1 AAVSO
43   2456112 2012-07-03 2456111 2012-07-02 1 AAVSO
44 8.4 2456435 2013-05-22 2456439 2013-05-26 -4 SVO
45 9.3 2456772 2014-04-24 2456767 2014-04-19 5 SVO
46 8.2 2457093 2015-03-11 2457095 2015-03-13 -2 SVO
47 8.7 2457426 2016-02-07 2457423 2016-02-04 3 SVO
48 9.1 2457757 2017-01-03 2457751 2016-12-28 6 SVO
49 8.1 2458083 2017-11-25 2458079 2017-11-21 4 SVO
50 8.9 2458413 2018-10-21 2458407 2018-10-15 6 SVO
51 8.2 2458736 2019-09-09 2458735 2019-09-08 1 SVO
52 8.7 2459075 2020-08-13 2459063 2020-08-01 12 SVO
53 7.9 2459393 2021-06-27 2459390 2021-06-24 3 SVO
54 9.1 2459730 2022-05-30 2459718 2022-05-18 12 SVO
55 8.5 2460061 2023-04-26 2460046 2023-04-11 15 SVO
56 8.8 2460386 2024-03-16 2460374 2024-03-04 12 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.