Maxima for T Lib
Period: 237.5, Epoch: 2452055
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-183   2408541 1882-04-05 2408593 1882-05-27 -52 AnHar, 1909, vol 55, p 95
-172   2411145 1889-05-22 2411205 1889-07-21 -60 SVO
-170   2411634 1890-09-23 2411680 1890-11-08 -46 AnHar, 1909, vol 55, p 95
-161   2413767 1896-07-26 2413818 1896-09-15 -51 AnHar, 1909, vol 55, p 95
-160   2414006 1897-03-22 2414055 1897-05-10 -49 SVO
-158   2414481 1898-07-10 2414530 1898-08-28 -49 AnHar, 1909, vol 55, p 95
-155   2415196 1900-06-25 2415243 1900-08-11 -47 AnHar, 1909, vol 55, p 95
-152   2415907 1902-06-06 2415955 1902-07-24 -48 SVO
-151   2416152 1903-02-06 2416193 1903-03-19 -41 GuL, 1920, 1.2
-149   2416629 1904-05-28 2416668 1904-07-06 -39 AAVSO
-148   2416867 1905-01-21 2416905 1905-02-28 -38 AAVSO
-146   2417336 1906-05-05 2417380 1906-06-18 -44 AAVSO
-144 10.2 2417796 1907-08-08 2417855 1907-10-06 -59 AAVSO
-143 9.2 2418030 1908-03-29 2418093 1908-05-31 -63 AAVSO
-141   2418500 1909-07-12 2418568 1909-09-18 -68 SVO
-140   2418774 1910-04-12 2418805 1910-05-13 -31 AAVSO
-138   2419222 1911-07-04 2419280 1911-08-31 -58 AAVSO
-137   2419460 1912-02-27 2419518 1912-04-25 -58 SVO
-135   2419930 1913-06-11 2419993 1913-08-13 -63 SVO
-134   2420158 1914-01-25 2420230 1914-04-07 -72 AAVSO
-133   2420408 1914-10-02 2420468 1914-12-01 -60 AAVSO
-132 10.2 2420643 1915-05-25 2420705 1915-07-26 -62 AAVSO
-131   2420880 1916-01-17 2420943 1916-03-20 -63 AAVSO
-130   2421096 1916-08-20 2421180 1916-11-12 -84 AAVSO
-129   2421370 1917-05-21 2421418 1917-07-08 -48 AAVSO
-127   2421852 1918-09-15 2421893 1918-10-26 -41 AAVSO
-126   2422070 1919-04-21 2422130 1919-06-20 -60 SVO
-125   2422320 1919-12-27 2422368 1920-02-13 -48 AAVSO
-124   2422566 1920-08-29 2422605 1920-10-07 -39 AAVSO
-123 11.2 2422806 1921-04-26 2422843 1921-06-02 -37 AAVSO
-122   2423046 1921-12-22 2423080 1922-01-25 -34 AAVSO
-121 11.2 2423284 1922-08-17 2423318 1922-09-20 -34 AAVSO
-120 11.2 2423508 1923-03-29 2423555 1923-05-15 -47 AAVSO
-118 11.2 2423978 1924-07-11 2424030 1924-09-01 -52 AAVSO
-117 11.1 2424225 1925-03-15 2424268 1925-04-27 -43 AAVSO
-115 11.3 2424693 1926-06-26 2424743 1926-08-15 -50 AAVSO
-114   2424928 1927-02-16 2424980 1927-04-09 -52 AAVSO
-112 10.2 2425408 1928-06-10 2425455 1928-07-27 -47 AAVSO
-111   2425635 1929-01-23 2425693 1929-03-22 -58 AAVSO
-110   2425874 1929-09-19 2425930 1929-11-14 -56 AAVSO
-109 11.0 2426117 1930-05-20 2426168 1930-07-10 -51 SVO
-108 10.8 2426359 1931-01-17 2426405 1931-03-04 -46 AAVSO
-107   2426593 1931-09-08 2426643 1931-10-28 -50 AAVSO
-106 11.7 2426824 1932-04-26 2426880 1932-06-21 -56 AAVSO
-105 10.5 2427076 1933-01-03 2427118 1933-02-14 -42 AAVSO
-104   2427314 1933-08-29 2427355 1933-10-09 -41 AAVSO
-103 11.1 2427543 1934-04-15 2427593 1934-06-04 -50 AAVSO
-101 11.5 2428014 1935-07-30 2428068 1935-09-22 -54 AAVSO
-100   2428252 1936-03-24 2428305 1936-05-16 -53 AAVSO
-98 11.0 2428722 1937-07-07 2428780 1937-09-03 -58 SVO
-97 11.2 2428972 1938-03-14 2429018 1938-04-29 -46 AAVSO
-95 10.6 2429444 1939-06-29 2429493 1939-08-17 -49 AAVSO
-92 10.9 2430160 1941-06-14 2430205 1941-07-29 -45 SVO
-91   2430385 1942-01-25 2430443 1942-03-24 -58 SVO
-90   2430628 1942-09-25 2430680 1942-11-16 -52 AAVSO
-89   2430874 1943-05-29 2430918 1943-07-12 -44 AAVSO
-86   2431586 1945-05-10 2431630 1945-06-23 -44 SVO
-81 10.9 2432784 1948-08-20 2432818 1948-09-23 -34 AAVSO
-80 11.4 2433021 1949-04-14 2433055 1949-05-18 -34 SVO
-79   2433258 1949-12-07 2433293 1950-01-11 -35 AAVSO
-78 11.0 2433489 1950-07-26 2433530 1950-09-05 -41 AAVSO
-77 12.9 2433724 1951-03-18 2433768 1951-05-01 -44 AAVSO
-76   2433959 1951-11-08 2434005 1951-12-24 -46 AAVSO
-75 11.3 2434193 1952-06-29 2434243 1952-08-18 -50 SVO
-74 10.8 2434431 1953-02-22 2434480 1953-04-12 -49 SVO
-73 10.5 2434669 1953-10-18 2434718 1953-12-06 -49 AAVSO
-72 11.2 2434906 1954-06-12 2434955 1954-07-31 -49 SVO
-71 11.4 2435147 1955-02-08 2435193 1955-03-26 -46 AAVSO
-70 10.6 2435377 1955-09-26 2435430 1955-11-18 -53 AAVSO
-69 11.4 2435614 1956-05-20 2435668 1956-07-13 -54 AAVSO
-68 10.7 2435860 1957-01-21 2435905 1957-03-07 -45 AAVSO
-67 11.1 2436098 1957-09-16 2436143 1957-10-31 -45 AAVSO
-66 11.3 2436324 1958-04-30 2436380 1958-06-25 -56 AAVSO
-65 11.0 2436564 1958-12-26 2436618 1959-02-18 -54 AAVSO
-64 11.2 2436802 1959-08-21 2436855 1959-10-13 -53 AAVSO
-63 10.9 2437038 1960-04-13 2437093 1960-06-07 -55 SVO
-62   2437276 1960-12-07 2437330 1961-01-30 -54 AAVSO
-61 11.2 2437526 1961-08-14 2437568 1961-09-25 -42 SVO
-60 11.1 2437766 1962-04-11 2437805 1962-05-20 -39 SVO
-59   2438004 1962-12-05 2438043 1963-01-13 -39 AAVSO
-58 11.8 2438234 1963-07-23 2438280 1963-09-07 -46 AAVSO
-57 10.6 2438479 1964-03-24 2438518 1964-05-02 -39 AAVSO
-56   2438717 1964-11-17 2438755 1964-12-25 -38 AAVSO
-55 11.5 2438962 1965-07-20 2438993 1965-08-20 -31 AAVSO
-54 10.9 2439205 1966-03-20 2439230 1966-04-14 -25 AAVSO
-53   2439440 1966-11-10 2439468 1966-12-08 -28 AAVSO
-52 11.2 2439685 1967-07-13 2439705 1967-08-02 -20 SVO
-51 11.3 2439919 1968-03-03 2439943 1968-03-27 -24 AAVSO
-50   2440164 1968-11-03 2440180 1968-11-19 -16 AAVSO
-49 11.3 2440392 1969-06-19 2440418 1969-07-15 -26 SVO
-48 10.7 2440639 1970-02-21 2440655 1970-03-09 -16 AAVSO
-47   2440872 1970-10-12 2440893 1970-11-02 -21 AAVSO
-46 10.6 2441114 1971-06-11 2441130 1971-06-27 -16 SVO
-45   2441345 1972-01-28 2441368 1972-02-20 -23 AAVSO
-44   2441580 1972-09-19 2441605 1972-10-14 -25 AAVSO
-43 11.2 2441824 1973-05-21 2441843 1973-06-09 -19 SVO
-42   2442055 1974-01-07 2442080 1974-02-01 -25 AAVSO
-41 10.3 2442310 1974-09-19 2442318 1974-09-27 -8 AAVSO
-40 11.0 2442556 1975-05-23 2442555 1975-05-22 1 SVO
-39 10.8 2442792 1976-01-14 2442793 1976-01-15 -1 AAVSO
-38 11.8 2443032 1976-09-10 2443030 1976-09-08 2 AAVSO
-37 11.3 2443278 1977-05-14 2443268 1977-05-04 10 SVO
-36 11.8 2443510 1978-01-01 2443505 1977-12-27 5 AAVSO
-35 10.8 2443746 1978-08-25 2443743 1978-08-22 3 AAVSO
-34 12.1 2443990 1979-04-26 2443980 1979-04-16 10 SVO
-33   2444224 1979-12-16 2444218 1979-12-10 6 AAVSO
-32 11.8 2444459 1980-08-07 2444455 1980-08-03 4 AAVSO
-31 11.1 2444701 1981-04-06 2444693 1981-03-29 8 SVO
-30   2444936 1981-11-27 2444930 1981-11-21 6 AAVSO
-29 10.7 2445169 1982-07-18 2445168 1982-07-17 1 SVO
-28 11.3 2445410 1983-03-16 2445405 1983-03-11 5 SVO
-27   2445643 1983-11-04 2445643 1983-11-04 0 AAVSO
-26 11.0 2445887 1984-07-05 2445880 1984-06-28 7 SVO
-25 11.0 2446115 1985-02-18 2446118 1985-02-21 -3 AAVSO
-24   2446354 1985-10-15 2446355 1985-10-16 -1 AAVSO
-23 11.4 2446586 1986-06-04 2446593 1986-06-11 -7 SVO
-22 11.3 2446828 1987-02-01 2446830 1987-02-03 -2 SVO
-21   2447058 1987-09-19 2447068 1987-09-29 -10 AAVSO
-20 11.6 2447306 1988-05-24 2447305 1988-05-23 1 SVO
-19   2447543 1989-01-16 2447543 1989-01-16 0 AAVSO
-18   2447769 1989-08-30 2447780 1989-09-10 -11 AAVSO
-17 11.0 2447998 1990-04-16 2448018 1990-05-06 -20 SVO
-16   2448235 1990-12-09 2448255 1990-12-29 -20 AAVSO
-15   2448476 1991-08-07 2448493 1991-08-24 -17 AAVSO
-14 11.5 2448722 1992-04-09 2448730 1992-04-17 -8 SVO
-13   2448962 1992-12-05 2448968 1992-12-11 -6 AAVSO
-12 11.3 2449190 1993-07-21 2449205 1993-08-05 -15 SVO
-11 10.9 2449427 1994-03-15 2449443 1994-03-31 -16 SVO
-10   2449664 1994-11-07 2449680 1994-11-23 -16 AAVSO
-9 11.2 2449908 1995-07-09 2449918 1995-07-19 -10 SVO
-8 11.3 2450148 1996-03-05 2450155 1996-03-12 -7 SVO
-7   2450367 1996-10-10 2450393 1996-11-05 -26 AAVSO
-6 11.6 2450616 1997-06-16 2450630 1997-06-30 -14 SVO
-5   2450854 1998-02-09 2450868 1998-02-23 -14 AAVSO
-4   2451096 1998-10-09 2451105 1998-10-18 -9 AAVSO
-3 10.9 2451334 1999-06-04 2451343 1999-06-13 -9 SVO
-2   2451574 2000-01-30 2451580 2000-02-05 -6 AAVSO
-1   2451824 2000-10-06 2451818 2000-09-30 6 AAVSO
0 10.8 2452053 2001-05-23 2452055 2001-05-25 -2 SVO
1   2452299 2002-01-24 2452293 2002-01-18 6 AAVSO
2   2452535 2002-09-17 2452530 2002-09-12 5 AAVSO
3 11.3 2452770 2003-05-10 2452768 2003-05-08 2 SVO
4   2453001 2003-12-27 2453005 2003-12-31 -4 AAVSO
5   2453239 2004-08-21 2453243 2004-08-25 -4 AAVSO
6 11.0 2453479 2005-04-18 2453480 2005-04-19 -1 SVO
7   2453696 2005-11-21 2453718 2005-12-13 -22 AAVSO
8   2453942 2006-07-25 2453955 2006-08-07 -13 AAVSO
9 11.7 2454185 2007-03-25 2454193 2007-04-02 -8 SVO
10   2454422 2007-11-17 2454430 2007-11-25 -8 AAVSO
11 11.8 2454668 2008-07-20 2454668 2008-07-20 0 SVO
12 11.0 2454906 2009-03-15 2454905 2009-03-14 1 SVO
13   2455141 2009-11-05 2455143 2009-11-07 -2 AAVSO
14 10.8 2455377 2010-06-29 2455380 2010-07-02 -3 SVO
15 12.0 2455621 2011-02-28 2455618 2011-02-25 3 AAVSO
16   2455847 2011-10-12 2455855 2011-10-20 -8 AAVSO
17 10.6 2456088 2012-06-09 2456093 2012-06-14 -5 SVO
18 11.2 2456330 2013-02-06 2456330 2013-02-06 0 SVO
19 11.1 2456566 2013-09-30 2456568 2013-10-02 -2 AAVSO
20 11.0 2456802 2014-05-24 2456805 2014-05-27 -3 SVO
21 11.0 2457040 2015-01-17 2457043 2015-01-20 -3 AAVSO
22   2457273 2015-09-07 2457280 2015-09-14 -7 AAVSO
23 11.5 2457518 2016-05-09 2457518 2016-05-09 0 SVO
24 11.5 2457757 2017-01-03 2457755 2017-01-01 2 AAVSO
25 11.7 2457981 2017-08-15 2457993 2017-08-27 -12 AAVSO
26 11.1 2458224 2018-04-15 2458230 2018-04-21 -6 SVO
28 11.1 2458705 2019-08-09 2458705 2019-08-09 0 SVO
29 11.3 2458941 2020-04-01 2458943 2020-04-03 -2 SVO
31 11.5 2459416 2021-07-20 2459418 2021-07-22 -2 SVO
32 11.2 2459656 2022-03-17 2459655 2022-03-16 1 SVO
33   2459885 2022-11-01 2459893 2022-11-09 -8 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.