Maxima for R Tau
Period: 320.9, Epoch: 2445250
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-144   2398654 1855-03-11 2399040 1856-03-31 -386 AnHar, 1909, vol 55, p 95
-143   2398979 1856-01-30 2399361 1857-02-15 -382 AnHar, 1909, vol 55, p 95
-142   2399314 1856-12-30 2399682 1858-01-02 -368 VeBam, 1931, vol 3, p 1, AnHar, 1909, vol 55, p 95
-141   2399650 1857-12-01 2400003 1858-11-19 -353 AnHar, 1909, vol 55, p 95, VeBam, 1931, vol 3, p 1
-140   2399962 1858-10-09 2400324 1859-10-06 -362 VeBam, 1931, vol 3, p 1, AnHar, 1909, vol 55, p 95
-139   2400281 1859-08-24 2400645 1860-08-22 -364 AnHar, 1909, vol 55, p 95, VeBam, 1931, vol 3, p 1
-136   2401245 1862-04-14 2401608 1863-04-12 -363 VeBam, 1931, vol 3, p 1
-135   2401581 1863-03-16 2401929 1864-02-27 -348 VeBam, 1931, vol 3, p 1, AnHar, 1909, vol 55, p 95
-134   2401910 1864-02-08 2402249 1865-01-12 -339 VeBam, 1931, vol 3, p 1
-133   2402243 1865-01-06 2402570 1865-11-29 -327 AnHar, 1909, vol 55, p 95
-130   2403230 1867-09-20 2403533 1868-07-19 -303 VeBam, 1931, vol 3, p 1
-129   2403544 1868-07-30 2403854 1869-06-05 -310 VeBam, 1931, vol 3, p 1
-126   2404510 1871-03-23 2404817 1872-01-24 -307 VeBam, 1931, vol 3, p 1
-125   2404833 1872-02-09 2405138 1872-12-10 -305 VeBam, 1931, vol 3, p 1
-124 7.8 2405151 1872-12-23 2405458 1873-10-26 -307 SVO
-123 9.0 2405479 1873-11-16 2405779 1874-09-12 -300 SVO
-122 8.7 2405815 1874-10-18 2406100 1875-07-30 -285 SVO
-121   2406145 1875-09-13 2406421 1876-06-15 -276 GuL, 1918, 1.1
-116   2407766 1880-02-20 2408026 1880-11-06 -260 AnHar, 1909, vol 55, p 95
-115   2408090 1881-01-09 2408347 1881-09-23 -257 GuL, 1918, 1.1
-114   2408405 1881-11-20 2408667 1882-08-09 -262 AN, 1910, vol 186, p 45
-113   2408734 1882-10-15 2408988 1883-06-26 -254 AnHar, 1909, vol 55, p 95
-112   2409066 1883-09-12 2409309 1884-05-12 -243 GuL, 1918, 1.1, AnHar, 1909, vol 55, p 95
-108   2410350 1887-03-19 2410593 1887-11-17 -243 AnHar, 1909, vol 55, p 95
-107   2410672 1888-02-04 2410914 1888-10-03 -242 GuL, 1918, 1.1, AN, 1910, vol 186, p 45
-106   2411010 1889-01-07 2411235 1889-08-20 -225 AN, 1910, vol 186, p 45
-105   2411344 1889-12-07 2411556 1890-07-07 -212 GuL, 1918, 1.1
-104   2411662 1890-10-21 2411876 1891-05-23 -214 AnHar, 1909, vol 55, p 95
-100   2412925 1894-04-06 2413160 1894-11-27 -235 AnHar, 1909, vol 55, p 95
-99   2413271 1895-03-18 2413481 1895-10-14 -210 AnHar, 1909, vol 55, p 95
-98   2413604 1896-02-14 2413802 1896-08-30 -198 AnHar, 1909, vol 55, p 95
-97   2413938 1897-01-13 2414123 1897-07-17 -185 AnHar, 1909, vol 55, p 95
-96   2414255 1897-11-26 2414444 1898-06-03 -189 AnHar, 1909, vol 55, p 95
-95   2414579 1898-10-16 2414765 1899-04-20 -186 AnHar, 1909, vol 55, p 95
-94   2414895 1899-08-28 2415085 1900-03-06 -190 SVO
-90   2416179 1903-03-05 2416369 1903-09-11 -190 AnHar, 1909, vol 55, p 95
-89   2416500 1904-01-20 2416690 1904-07-28 -190 SVO
-88   2416825 1904-12-10 2417011 1905-06-14 -186 AnHar, 1909, vol 55, p 95
-87 9.7 2417131 1905-10-12 2417332 1906-05-01 -201 AAVSO
-86   2417471 1906-09-17 2417653 1907-03-18 -182 AAVSO
-85   2417779 1907-07-22 2417974 1908-02-02 -195 AAVSO
-84   2418111 1908-06-18 2418294 1908-12-18 -183 AAVSO
-83   2418453 1909-05-26 2418615 1909-11-04 -162 AAVSO
-82 8.6 2418757 1910-03-26 2418936 1910-09-21 -179 AAVSO
-81 8.8 2419079 1911-02-11 2419257 1911-08-08 -178 AAVSO
-80 9.0 2419409 1912-01-07 2419578 1912-06-24 -169 AAVSO
-79 8.1 2419730 1912-11-23 2419899 1913-05-11 -169 AAVSO
-78   2420021 1913-09-10 2420220 1914-03-28 -199 AAVSO
-77   2420367 1914-08-22 2420541 1915-02-12 -174 AAVSO
-76   2420681 1915-07-02 2420862 1915-12-30 -181 AAVSO
-74   2421344 1917-04-25 2421503 1917-10-01 -159 AAVSO
-73 9.1 2421675 1918-03-22 2421824 1918-08-18 -149 AAVSO
-72 9.3 2421992 1919-02-02 2422145 1919-07-05 -153 SVO
-71 9.2 2422318 1919-12-25 2422466 1920-05-21 -148 SVO
-70 8.8 2422635 1920-11-06 2422787 1921-04-07 -152 SVO
-69 8.5 2422951 1921-09-18 2423108 1922-02-22 -157 AAVSO
-68 8.6 2423278 1922-08-11 2423429 1923-01-09 -151 AAVSO
-67   2423601 1923-06-30 2423750 1923-11-26 -149 AAVSO
-66   2423932 1924-05-26 2424071 1924-10-12 -139 AAVSO
-65 8.3 2424240 1925-03-30 2424392 1925-08-29 -152 SVO
-64 8.7 2424570 1926-02-23 2424712 1926-07-15 -142 AAVSO
-63 9.8 2424900 1927-01-19 2425033 1927-06-01 -133 SVO
-62 8.4 2425215 1927-11-30 2425354 1928-04-17 -139 SVO
-61 8.9 2425543 1928-10-23 2425675 1929-03-04 -132 SVO
-60 8.5 2425868 1929-09-13 2425996 1930-01-19 -128 SVO
-59 8.4 2426200 1930-08-11 2426317 1930-12-06 -117 AAVSO
-58   2426518 1931-06-25 2426638 1931-10-23 -120 AAVSO
-57   2426854 1932-05-26 2426959 1932-09-08 -105 AAVSO
-56 8.6 2427175 1933-04-12 2427280 1933-07-26 -105 SVO
-55 8.8 2427504 1934-03-07 2427601 1934-06-12 -97 SVO
-54 8.8 2427828 1935-01-25 2427921 1935-04-28 -93 SVO
-53 8.8 2428152 1935-12-15 2428242 1936-03-14 -90 SVO
-52 9.2 2428474 1936-11-01 2428563 1937-01-29 -89 SVO
-51 8.5 2428796 1937-09-19 2428884 1937-12-16 -88 SVO
-50 8.4 2429101 1938-07-21 2429205 1938-11-02 -104 AAVSO
-49   2429444 1939-06-29 2429526 1939-09-19 -82 AAVSO
-48 8.7 2429756 1940-05-06 2429847 1940-08-05 -91 SVO
-47 8.6 2430084 1941-03-30 2430168 1941-06-22 -84 SVO
-46 8.5 2430412 1942-02-21 2430489 1942-05-09 -77 SVO
-45 8.7 2430733 1943-01-08 2430810 1943-03-26 -77 SVO
-44 8.4 2431063 1943-12-04 2431130 1944-02-09 -67 SVO
-43 8.2 2431376 1944-10-12 2431451 1944-12-26 -75 SVO
-42 8.5 2431701 1945-09-02 2431772 1945-11-12 -71 SVO
-41   2432029 1946-07-27 2432093 1946-09-29 -64 AAVSO
-40   2432362 1947-06-25 2432414 1947-08-16 -52 AAVSO
-39   2432685 1948-05-13 2432735 1948-07-02 -50 AAVSO
-38 7.9 2433022 1949-04-15 2433056 1949-05-19 -34 SVO
-37 8.6 2433348 1950-03-07 2433377 1950-04-05 -29 AAVSO
-36 8.3 2433686 1951-02-08 2433698 1951-02-20 -12 SVO
-35 8.2 2434008 1951-12-27 2434019 1952-01-07 -11 SVO
-34 8.6 2434332 1952-11-15 2434339 1952-11-22 -7 SVO
-33 8.3 2434660 1953-10-09 2434660 1953-10-09 0 SVO
-32 8.5 2434974 1954-08-19 2434981 1954-08-26 -7 AAVSO
-31   2435293 1955-07-04 2435302 1955-07-13 -9 AAVSO
-30   2435615 1956-05-21 2435623 1956-05-29 -8 AAVSO
-29 8.6 2435946 1957-04-17 2435944 1957-04-15 2 AAVSO
-28 8.7 2436259 1958-02-24 2436265 1958-03-02 -6 SVO
-27 9.0 2436584 1959-01-15 2436586 1959-01-17 -2 SVO
-26 8.9 2436902 1959-11-29 2436907 1959-12-04 -5 SVO
-25 8.0 2437212 1960-10-04 2437228 1960-10-20 -16 SVO
-24 8.9 2437537 1961-08-25 2437548 1961-09-05 -11 AAVSO
-23   2437855 1962-07-09 2437869 1962-07-23 -14 AAVSO
-22   2438171 1963-05-21 2438190 1963-06-09 -19 AAVSO
-21 8.9 2438500 1964-04-14 2438511 1964-04-25 -11 SVO
-20 8.3 2438822 1965-03-02 2438832 1965-03-12 -10 SVO
-19 8.6 2439139 1966-01-13 2439153 1966-01-27 -14 SVO
-18 8.8 2439465 1966-12-05 2439474 1966-12-14 -9 SVO
-17 8.3 2439784 1967-10-20 2439795 1967-10-31 -11 SVO
-16 8.7 2440109 1968-09-09 2440116 1968-09-16 -7 SVO
-15 7.9 2440438 1969-08-04 2440437 1969-08-03 1 AAVSO
-14   2440750 1970-06-12 2440757 1970-06-19 -7 AAVSO
-13 9.3 2441076 1971-05-04 2441078 1971-05-06 -2 SVO
-12 8.9 2441403 1972-03-26 2441399 1972-03-22 4 SVO
-11 8.0 2441709 1973-01-26 2441720 1973-02-06 -11 SVO
-10 8.7 2442038 1973-12-21 2442041 1973-12-24 -3 SVO
-9 8.6 2442360 1974-11-08 2442362 1974-11-10 -2 SVO
-8 7.7 2442678 1975-09-22 2442683 1975-09-27 -5 SVO
-7 8.5 2443006 1976-08-15 2443004 1976-08-13 2 SVO
-6 8.7 2443327 1977-07-02 2443325 1977-06-30 2 AAVSO
-5 8.3 2443640 1978-05-11 2443646 1978-05-17 -6 SVO
-4 9.3 2443967 1979-04-03 2443966 1979-04-02 1 AAVSO
-3 8.6 2444300 1980-03-01 2444287 1980-02-17 13 SVO
-2 9.3 2444622 1981-01-17 2444608 1981-01-03 14 SVO
-1 8.8 2444950 1981-12-11 2444929 1981-11-20 21 SVO
0 8.4 2445269 1982-10-26 2445250 1982-10-07 19 SVO
1 8.9 2445594 1983-09-16 2445571 1983-08-24 23 SVO
2 8.8 2445917 1984-08-04 2445892 1984-07-10 25 AAVSO
3 8.5 2446227 1985-06-10 2446213 1985-05-27 14 AAVSO
4 8.6 2446550 1986-04-29 2446534 1986-04-13 16 SVO
5 9.0 2446882 1987-03-27 2446855 1987-02-28 27 SVO
6 8.0 2447199 1988-02-07 2447175 1988-01-14 24 SVO
7 9.4 2447528 1989-01-01 2447496 1988-11-30 32 SVO
8 8.7 2447850 1989-11-19 2447817 1989-10-17 33 SVO
9 8.7 2448166 1990-10-01 2448138 1990-09-03 28 SVO
10   2448491 1991-08-22 2448459 1991-07-21 32 AAVSO
11   2448809 1992-07-05 2448780 1992-06-06 29 AAVSO
12   2449154 1993-06-15 2449101 1993-04-23 53 AAVSO
13 8.5 2449461 1994-04-18 2449422 1994-03-10 39 SVO
14 8.3 2449788 1995-03-11 2449743 1995-01-25 45 SVO
15 8.4 2450117 1996-02-03 2450064 1995-12-12 53 SVO
16 8.8 2450439 1996-12-21 2450384 1996-10-27 55 SVO
17 8.4 2450767 1997-11-14 2450705 1997-09-13 62 SVO
18 8.2 2451082 1998-09-25 2451026 1998-07-31 56 SVO
19   2451409 1999-08-18 2451347 1999-06-17 62 AAVSO
20   2451728 2000-07-02 2451668 2000-05-03 60 AAVSO
21   2452057 2001-05-27 2451989 2001-03-20 68 AAVSO
22 8.6 2452385 2002-04-20 2452310 2002-02-04 75 SVO
23 8.9 2452708 2003-03-09 2452631 2002-12-22 77 SVO
24 8.1 2453021 2004-01-16 2452952 2003-11-08 69 SVO
25 8.4 2453353 2004-12-13 2453273 2004-09-24 80 SVO
26 8.3 2453674 2005-10-30 2453593 2005-08-10 81 SVO
27 8.5 2453996 2006-09-17 2453914 2006-06-27 82 SVO
28   2454323 2007-08-10 2454235 2007-05-14 88 AAVSO
29   2454645 2008-06-27 2454556 2008-03-30 89 AAVSO
30 8.0 2454966 2009-05-14 2454877 2009-02-14 89 AAVSO
31 9.1 2455299 2010-04-12 2455198 2010-01-01 101 SVO
32 8.8 2455618 2011-02-25 2455519 2010-11-18 99 SVO
33 8.5 2455943 2012-01-16 2455840 2011-10-05 103 SVO
34 8.4 2456265 2012-12-03 2456161 2012-08-21 104 SVO
35 9.0 2456593 2013-10-27 2456482 2013-07-08 111 SVO
36 8.2 2456910 2014-09-09 2456802 2014-05-24 108 SVO
37 9.2 2457238 2015-08-03 2457123 2015-04-10 115 AAVSO
38   2457552 2016-06-12 2457444 2016-02-25 108 AAVSO
39   2457884 2017-05-10 2457765 2017-01-11 119 AAVSO
40 8.7 2458222 2018-04-13 2458086 2017-11-28 136 SVO
41 8.6 2458541 2019-02-26 2458407 2018-10-15 134 SVO
42 9.0 2458879 2020-01-30 2458728 2019-09-01 151 SVO
43 7.8 2459199 2020-12-15 2459049 2020-07-18 150 SVO
44 8.8 2459521 2021-11-02 2459370 2021-06-04 151 SVO
45 8.5 2459844 2022-09-21 2459691 2022-04-21 153 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.