Maxima for R Tau
Period: 323.45, Epoch: 2445278.8
AAVSO offset: -3

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-144   2398654 1855-03-11 2398703 1855-04-29 -49 AnHar, 1909, vol 55, p 95
-143   2398979 1856-01-30 2399026 1856-03-17 -47 AnHar, 1909, vol 55, p 95
-142   2399314 1856-12-30 2399350 1857-02-04 -36 VeBam, 1931, vol 3, p 1, AnHar, 1909, vol 55, p 95
-141   2399650 1857-12-01 2399673 1857-12-24 -23 AnHar, 1909, vol 55, p 95, VeBam, 1931, vol 3, p 1
-140   2399962 1858-10-09 2399997 1858-11-13 -35 VeBam, 1931, vol 3, p 1, AnHar, 1909, vol 55, p 95
-139   2400281 1859-08-24 2400320 1859-10-02 -39 AnHar, 1909, vol 55, p 95, VeBam, 1931, vol 3, p 1
-136   2401245 1862-04-14 2401290 1862-05-29 -45 VeBam, 1931, vol 3, p 1
-135   2401581 1863-03-16 2401614 1863-04-18 -33 VeBam, 1931, vol 3, p 1, AnHar, 1909, vol 55, p 95
-134   2401910 1864-02-08 2401937 1864-03-06 -27 VeBam, 1931, vol 3, p 1
-133   2402243 1865-01-06 2402261 1865-01-24 -18 AnHar, 1909, vol 55, p 95
-130   2403230 1867-09-20 2403231 1867-09-21 -1 VeBam, 1931, vol 3, p 1
-129   2403544 1868-07-30 2403554 1868-08-09 -10 VeBam, 1931, vol 3, p 1
-126   2404510 1871-03-23 2404525 1871-04-07 -15 VeBam, 1931, vol 3, p 1
-125   2404833 1872-02-09 2404848 1872-02-24 -15 VeBam, 1931, vol 3, p 1
-124 7.8 2405151 1872-12-23 2405172 1873-01-13 -21 SVO
-123 9.0 2405479 1873-11-16 2405495 1873-12-02 -16 SVO
-122 8.7 2405815 1874-10-18 2405819 1874-10-22 -4 SVO
-121   2406145 1875-09-13 2406142 1875-09-10 3 GuL, 1918, 1.1
-116   2407766 1880-02-20 2407759 1880-02-13 7 AnHar, 1909, vol 55, p 95
-115   2408090 1881-01-09 2408083 1881-01-02 7 GuL, 1918, 1.1
-114   2408405 1881-11-20 2408406 1881-11-21 -1 AN, 1910, vol 186, p 45
-113   2408734 1882-10-15 2408730 1882-10-11 4 AnHar, 1909, vol 55, p 95
-112   2409066 1883-09-12 2409053 1883-08-30 13 GuL, 1918, 1.1, AnHar, 1909, vol 55, p 95
-108   2410350 1887-03-19 2410347 1887-03-16 3 AnHar, 1909, vol 55, p 95
-107   2410672 1888-02-04 2410670 1888-02-02 2 GuL, 1918, 1.1, AN, 1910, vol 186, p 45
-106   2411010 1889-01-07 2410994 1888-12-22 16 AN, 1910, vol 186, p 45
-105   2411344 1889-12-07 2411317 1889-11-10 27 GuL, 1918, 1.1
-104   2411662 1890-10-21 2411641 1890-09-30 21 AnHar, 1909, vol 55, p 95
-100   2412925 1894-04-06 2412934 1894-04-15 -9 AnHar, 1909, vol 55, p 95
-99   2413271 1895-03-18 2413258 1895-03-05 13 AnHar, 1909, vol 55, p 95
-98   2413604 1896-02-14 2413581 1896-01-22 23 AnHar, 1909, vol 55, p 95
-97   2413938 1897-01-13 2413905 1896-12-11 33 AnHar, 1909, vol 55, p 95
-96   2414255 1897-11-26 2414228 1897-10-30 27 AnHar, 1909, vol 55, p 95
-95   2414579 1898-10-16 2414552 1898-09-19 27 AnHar, 1909, vol 55, p 95
-94   2414895 1899-08-28 2414875 1899-08-08 20 SVO
-90   2416179 1903-03-05 2416169 1903-02-23 10 AnHar, 1909, vol 55, p 95
-89   2416500 1904-01-20 2416492 1904-01-12 8 SVO
-88   2416825 1904-12-10 2416816 1904-12-01 9 AnHar, 1909, vol 55, p 95
-87 9.7 2417131 1905-10-12 2417139 1905-10-20 -8 AAVSO
-86   2417471 1906-09-17 2417463 1906-09-09 8 AAVSO
-85   2417779 1907-07-22 2417786 1907-07-29 -7 AAVSO
-84   2418111 1908-06-18 2418109 1908-06-16 2 AAVSO
-83   2418453 1909-05-26 2418433 1909-05-06 20 AAVSO
-82 8.6 2418757 1910-03-26 2418756 1910-03-25 1 AAVSO
-81 8.8 2419079 1911-02-11 2419080 1911-02-12 -1 AAVSO
-80 9.0 2419409 1912-01-07 2419403 1912-01-01 6 AAVSO
-79 8.1 2419730 1912-11-23 2419727 1912-11-20 3 AAVSO
-78   2420021 1913-09-10 2420050 1913-10-09 -29 AAVSO
-77   2420367 1914-08-22 2420374 1914-08-29 -7 AAVSO
-76   2420681 1915-07-02 2420697 1915-07-18 -16 AAVSO
-74   2421344 1917-04-25 2421344 1917-04-25 0 AAVSO
-73 9.1 2421675 1918-03-22 2421667 1918-03-14 8 AAVSO
-72 9.3 2421992 1919-02-02 2421991 1919-02-01 1 SVO
-71 9.2 2422318 1919-12-25 2422314 1919-12-21 4 SVO
-70 8.8 2422635 1920-11-06 2422638 1920-11-09 -3 SVO
-69 8.5 2422951 1921-09-18 2422961 1921-09-28 -10 AAVSO
-68 8.6 2423278 1922-08-11 2423285 1922-08-18 -7 AAVSO
-67   2423601 1923-06-30 2423608 1923-07-07 -7 AAVSO
-66   2423932 1924-05-26 2423931 1924-05-25 1 AAVSO
-65 8.3 2424240 1925-03-30 2424255 1925-04-14 -15 SVO
-64 8.7 2424570 1926-02-23 2424578 1926-03-03 -8 AAVSO
-63 9.8 2424900 1927-01-19 2424902 1927-01-21 -2 SVO
-62 8.4 2425215 1927-11-30 2425225 1927-12-10 -10 SVO
-61 8.9 2425543 1928-10-23 2425549 1928-10-29 -6 SVO
-60 8.5 2425868 1929-09-13 2425872 1929-09-17 -4 SVO
-59 8.4 2426200 1930-08-11 2426196 1930-08-07 4 AAVSO
-58   2426518 1931-06-25 2426519 1931-06-26 -1 AAVSO
-57   2426854 1932-05-26 2426842 1932-05-14 12 AAVSO
-56 8.6 2427175 1933-04-12 2427166 1933-04-03 9 SVO
-55 8.8 2427504 1934-03-07 2427489 1934-02-20 15 SVO
-54 8.8 2427828 1935-01-25 2427813 1935-01-10 15 SVO
-53 8.8 2428152 1935-12-15 2428136 1935-11-29 16 SVO
-52 9.2 2428474 1936-11-01 2428460 1936-10-18 14 SVO
-51 8.5 2428796 1937-09-19 2428783 1937-09-06 13 SVO
-50 8.4 2429101 1938-07-21 2429107 1938-07-27 -6 AAVSO
-49   2429444 1939-06-29 2429430 1939-06-15 14 AAVSO
-48 8.7 2429756 1940-05-06 2429753 1940-05-03 3 SVO
-47 8.6 2430084 1941-03-30 2430077 1941-03-23 7 SVO
-46 8.5 2430412 1942-02-21 2430400 1942-02-09 12 SVO
-45 8.7 2430733 1943-01-08 2430724 1942-12-30 9 SVO
-44 8.4 2431063 1943-12-04 2431047 1943-11-18 16 SVO
-43 8.2 2431376 1944-10-12 2431371 1944-10-07 5 SVO
-42 8.5 2431701 1945-09-02 2431694 1945-08-26 7 SVO
-41   2432029 1946-07-27 2432018 1946-07-16 11 AAVSO
-40   2432362 1947-06-25 2432341 1947-06-04 21 AAVSO
-39   2432685 1948-05-13 2432664 1948-04-22 21 AAVSO
-38 7.9 2433022 1949-04-15 2432988 1949-03-12 34 SVO
-37 8.6 2433348 1950-03-07 2433311 1950-01-29 37 AAVSO
-36 8.3 2433686 1951-02-08 2433635 1950-12-19 51 SVO
-35 8.2 2434008 1951-12-27 2433958 1951-11-07 50 SVO
-34 8.6 2434332 1952-11-15 2434282 1952-09-26 50 SVO
-33 8.3 2434660 1953-10-09 2434605 1953-08-15 55 SVO
-32 8.5 2434974 1954-08-19 2434929 1954-07-05 45 AAVSO
-31   2435293 1955-07-04 2435252 1955-05-24 41 AAVSO
-30   2435615 1956-05-21 2435575 1956-04-11 40 AAVSO
-29 8.6 2435946 1957-04-17 2435899 1957-03-01 47 AAVSO
-28 8.7 2436259 1958-02-24 2436222 1958-01-18 37 SVO
-27 9.0 2436584 1959-01-15 2436546 1958-12-08 38 SVO
-26 8.9 2436902 1959-11-29 2436869 1959-10-27 33 SVO
-25 8.0 2437212 1960-10-04 2437193 1960-09-15 19 SVO
-24 8.9 2437537 1961-08-25 2437516 1961-08-04 21 AAVSO
-23   2437855 1962-07-09 2437840 1962-06-24 15 AAVSO
-22   2438171 1963-05-21 2438163 1963-05-13 8 AAVSO
-21 8.9 2438500 1964-04-14 2438486 1964-03-31 14 SVO
-20 8.3 2438822 1965-03-02 2438810 1965-02-18 12 SVO
-19 8.6 2439139 1966-01-13 2439133 1966-01-07 6 SVO
-18 8.8 2439465 1966-12-05 2439457 1966-11-27 8 SVO
-17 8.3 2439784 1967-10-20 2439780 1967-10-16 4 SVO
-16 8.7 2440109 1968-09-09 2440104 1968-09-04 5 SVO
-15 7.9 2440438 1969-08-04 2440427 1969-07-24 11 AAVSO
-14   2440750 1970-06-12 2440751 1970-06-13 -1 AAVSO
-13 9.3 2441076 1971-05-04 2441074 1971-05-02 2 SVO
-12 8.9 2441403 1972-03-26 2441397 1972-03-20 6 SVO
-11 8.0 2441709 1973-01-26 2441721 1973-02-07 -12 SVO
-10 8.7 2442038 1973-12-21 2442044 1973-12-27 -6 SVO
-9 8.6 2442360 1974-11-08 2442368 1974-11-16 -8 SVO
-8 7.7 2442678 1975-09-22 2442691 1975-10-05 -13 SVO
-7 8.5 2443006 1976-08-15 2443015 1976-08-24 -9 SVO
-6 8.7 2443327 1977-07-02 2443338 1977-07-13 -11 AAVSO
-5 8.3 2443640 1978-05-11 2443662 1978-06-02 -22 SVO
-4 9.3 2443967 1979-04-03 2443985 1979-04-21 -18 AAVSO
-3 8.6 2444300 1980-03-01 2444309 1980-03-10 -9 SVO
-2 9.3 2444622 1981-01-17 2444632 1981-01-27 -10 SVO
-1 8.8 2444950 1981-12-11 2444955 1981-12-16 -5 SVO
0 8.4 2445269 1982-10-26 2445279 1982-11-05 -10 SVO
1 8.9 2445594 1983-09-16 2445602 1983-09-24 -8 SVO
2 8.8 2445917 1984-08-04 2445926 1984-08-13 -9 AAVSO
3 8.5 2446227 1985-06-10 2446249 1985-07-02 -22 AAVSO
4 8.6 2446550 1986-04-29 2446573 1986-05-22 -23 SVO
5 9.0 2446882 1987-03-27 2446896 1987-04-10 -14 SVO
6 8.0 2447199 1988-02-07 2447220 1988-02-28 -21 SVO
7 9.4 2447528 1989-01-01 2447543 1989-01-16 -15 SVO
8 8.7 2447850 1989-11-19 2447866 1989-12-05 -16 SVO
9 8.7 2448166 1990-10-01 2448190 1990-10-25 -24 SVO
10   2448491 1991-08-22 2448513 1991-09-13 -22 AAVSO
11   2448809 1992-07-05 2448837 1992-08-02 -28 AAVSO
12   2449154 1993-06-15 2449160 1993-06-21 -6 AAVSO
13 8.5 2449461 1994-04-18 2449484 1994-05-11 -23 SVO
14 8.3 2449788 1995-03-11 2449807 1995-03-30 -19 SVO
15 8.4 2450117 1996-02-03 2450131 1996-02-17 -14 SVO
16 8.8 2450439 1996-12-21 2450454 1997-01-05 -15 SVO
17 8.4 2450767 1997-11-14 2450777 1997-11-24 -10 SVO
18 8.2 2451082 1998-09-25 2451101 1998-10-14 -19 SVO
19   2451409 1999-08-18 2451424 1999-09-02 -15 AAVSO
20   2451728 2000-07-02 2451748 2000-07-22 -20 AAVSO
21   2452057 2001-05-27 2452071 2001-06-10 -14 AAVSO
22 8.6 2452385 2002-04-20 2452395 2002-04-30 -10 SVO
23 8.9 2452708 2003-03-09 2452718 2003-03-19 -10 SVO
24 8.1 2453021 2004-01-16 2453042 2004-02-06 -21 SVO
25 8.4 2453353 2004-12-13 2453365 2004-12-25 -12 SVO
26 8.3 2453674 2005-10-30 2453688 2005-11-13 -14 SVO
27 8.5 2453996 2006-09-17 2454012 2006-10-03 -16 SVO
28   2454323 2007-08-10 2454335 2007-08-22 -12 AAVSO
29   2454645 2008-06-27 2454659 2008-07-11 -14 AAVSO
30 8.0 2454966 2009-05-14 2454982 2009-05-30 -16 AAVSO
31 9.1 2455299 2010-04-12 2455306 2010-04-19 -7 SVO
32 8.8 2455618 2011-02-25 2455629 2011-03-08 -11 SVO
33 8.5 2455943 2012-01-16 2455953 2012-01-26 -10 SVO
34 8.4 2456265 2012-12-03 2456276 2012-12-14 -11 SVO
35 9.0 2456593 2013-10-27 2456599 2013-11-02 -6 SVO
36 8.2 2456910 2014-09-09 2456923 2014-09-22 -13 SVO
37 9.2 2457238 2015-08-03 2457246 2015-08-11 -8 AAVSO
38   2457552 2016-06-12 2457570 2016-06-30 -18 AAVSO
39   2457884 2017-05-10 2457893 2017-05-19 -9 AAVSO
40 8.7 2458222 2018-04-13 2458217 2018-04-08 5 SVO
41 8.6 2458541 2019-02-26 2458540 2019-02-25 1 SVO
42 9.0 2458879 2020-01-30 2458864 2020-01-15 15 SVO
43 7.8 2459199 2020-12-15 2459187 2020-12-03 12 SVO
44 8.8 2459521 2021-11-02 2459510 2021-10-22 11 SVO
45 8.5 2459844 2022-09-21 2459834 2022-09-11 10 SVO
46   2460160 2023-08-03 2460157 2023-07-31 3 SVO
47   2460480 2024-06-18 2460481 2024-06-19 -1 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.