Maxima for U Lib
Period: 228, Epoch: 2454580
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-206   2407854 1880-05-18 2407612 1879-09-19 242 AnHar, 1937, vol 105, p 459
-188   2411932 1891-07-18 2411716 1890-12-14 216 AnHar, 1909, vol 55, p 95
-185   2412599 1893-05-15 2412400 1892-10-28 199 AnHar, 1909, vol 55, p 95
-180   2413732 1896-06-21 2413540 1895-12-12 192 AnHar, 1909, vol 55, p 95
-179   2413950 1897-01-25 2413768 1896-07-27 182 SVO
-178   2414180 1897-09-12 2413996 1897-03-12 184 SVO
-177   2414400 1898-04-20 2414224 1897-10-26 176 SVO
-175   2414860 1899-07-24 2414680 1899-01-25 180 SVO
-174   2415090 1900-03-11 2414908 1899-09-10 182 SVO
-172   2415555 1901-06-19 2415364 1900-12-10 191 SVO
-170   2416000 1902-09-07 2415820 1902-03-11 180 SVO
-167   2416693 1904-07-31 2416504 1904-01-24 189 AAVSO
-166   2416905 1905-02-28 2416732 1904-09-08 173 AAVSO
-164 9.0 2417349 1906-05-18 2417188 1905-12-08 161 AAVSO
-162 9.5 2417807 1907-08-19 2417644 1907-03-09 163 AAVSO
-161 9.4 2418036 1908-04-04 2417872 1907-10-23 164 AAVSO
-159 9.5 2418506 1909-07-18 2418328 1909-01-21 178 AAVSO
-158 9.3 2418725 1910-02-22 2418556 1909-09-06 169 AAVSO
-156   2419190 1911-06-02 2419012 1910-12-06 178 AAVSO
-154   2419631 1912-08-16 2419468 1912-03-06 163 AAVSO
-151 9.2 2420307 1914-06-23 2420152 1914-01-19 155 AAVSO
-148 9.0 2420989 1916-05-05 2420836 1915-12-04 153 AAVSO
-145   2421670 1918-03-17 2421520 1917-10-18 150 AAVSO
-143 9.2 2422113 1919-06-03 2421976 1919-01-17 137 AAVSO
-142 9.5 2422352 1920-01-28 2422204 1919-09-02 148 AAVSO
-141   2422573 1920-09-05 2422432 1920-04-17 141 AAVSO
-140   2422813 1921-05-03 2422660 1920-12-01 153 AAVSO
-138   2423248 1922-07-12 2423116 1922-03-02 132 AAVSO
-137 9.4 2423483 1923-03-04 2423344 1922-10-16 139 AAVSO
-136 9.2 2423708 1923-10-15 2423572 1923-06-01 136 AAVSO
-135 10.1 2423940 1924-06-03 2423800 1924-01-15 140 SVO
-134   2424159 1925-01-08 2424028 1924-08-30 131 AAVSO
-133 10.0 2424385 1925-08-22 2424256 1925-04-15 129 AAVSO
-132 10.4 2424617 1926-04-11 2424484 1925-11-29 133 AAVSO
-131   2424844 1926-11-24 2424712 1926-07-15 132 AAVSO
-130 9.0 2425069 1927-07-07 2424940 1927-02-28 129 AAVSO
-129 9.0 2425297 1928-02-20 2425168 1927-10-14 129 AAVSO
-128 10.0 2425526 1928-10-06 2425396 1928-05-29 130 AAVSO
-127 9.9 2425748 1929-05-16 2425624 1929-01-12 124 SVO
-125 9.2 2426193 1930-08-04 2426080 1930-04-13 113 AAVSO
-124 9.6 2426426 1931-03-25 2426308 1930-11-27 118 AAVSO
-123   2426637 1931-10-22 2426536 1931-07-13 101 AAVSO
-122 9.2 2426847 1932-05-19 2426764 1932-02-26 83 AAVSO
-121   2427098 1933-01-25 2426992 1932-10-11 106 AAVSO
-120 9.4 2427333 1933-09-17 2427220 1933-05-27 113 AAVSO
-119 9.5 2427556 1934-04-28 2427448 1934-01-10 108 SVO
-118   2427782 1934-12-10 2427676 1934-08-26 106 AAVSO
-117 9.8 2428011 1935-07-27 2427904 1935-04-11 107 AAVSO
-116   2428241 1936-03-13 2428132 1935-11-25 109 AAVSO
-115   2428462 1936-10-20 2428360 1936-07-10 102 AAVSO
-114 10.0 2428690 1937-06-05 2428588 1937-02-23 102 SVO
-113   2428908 1938-01-09 2428816 1937-10-09 92 AAVSO
-112 9.6 2429130 1938-08-19 2429044 1938-05-25 86 SVO
-111 9.6 2429365 1939-04-11 2429272 1939-01-08 93 AAVSO
-109 9.6 2429809 1940-06-28 2429728 1940-04-08 81 SVO
-108   2430043 1941-02-17 2429956 1940-11-22 87 AAVSO
-106 9.7 2430480 1942-04-30 2430412 1942-02-21 68 AAVSO
-104 9.4 2430940 1943-08-03 2430868 1943-05-23 72 AAVSO
-101 9.7 2431621 1945-06-14 2431552 1945-04-06 69 AAVSO
-99   2432071 1946-09-07 2432008 1946-07-06 63 AAVSO
-98 9.4 2432297 1947-04-21 2432236 1947-02-19 61 AAVSO
-96 9.4 2432757 1948-07-24 2432692 1948-05-20 65 AAVSO
-95 9.9 2432993 1949-03-17 2432920 1949-01-03 73 SVO
-94 10.4 2433212 1949-10-22 2433148 1949-08-19 64 AAVSO
-93 9.8 2433442 1950-06-09 2433376 1950-04-04 66 SVO
-92 9.0 2433669 1951-01-22 2433604 1950-11-18 65 AAVSO
-91 10.0 2433895 1951-09-05 2433832 1951-07-04 63 AAVSO
-90 9.5 2434121 1952-04-18 2434060 1952-02-17 61 SVO
-89   2434340 1952-11-23 2434288 1952-10-02 52 AAVSO
-88 9.7 2434565 1953-07-06 2434516 1953-05-18 49 SVO
-87 9.3 2434787 1954-02-13 2434744 1954-01-01 43 SVO
-86 9.6 2435013 1954-09-27 2434972 1954-08-17 41 AAVSO
-85 9.6 2435230 1955-05-02 2435200 1955-04-02 30 SVO
-84 9.5 2435458 1955-12-16 2435428 1955-11-16 30 AAVSO
-83 10.0 2435689 1956-08-03 2435656 1956-07-01 33 SVO
-82 9.3 2435912 1957-03-14 2435884 1957-02-14 28 SVO
-81 9.4 2436143 1957-10-31 2436112 1957-09-30 31 AAVSO
-80 9.9 2436370 1958-06-15 2436340 1958-05-16 30 SVO
-79 9.2 2436600 1959-01-31 2436568 1958-12-30 32 AAVSO
-78 10.2 2436830 1959-09-18 2436796 1959-08-15 34 AAVSO
-77 9.9 2437063 1960-05-08 2437024 1960-03-30 39 SVO
-76 9.9 2437288 1960-12-19 2437252 1960-11-13 36 AAVSO
-75 10.2 2437519 1961-08-07 2437480 1961-06-29 39 SVO
-74 9.5 2437746 1962-03-22 2437708 1962-02-12 38 SVO
-73   2437969 1962-10-31 2437936 1962-09-28 33 AAVSO
-72 9.4 2438202 1963-06-21 2438164 1963-05-14 38 SVO
-71 9.8 2438427 1964-02-01 2438392 1963-12-28 35 AAVSO
-70 10.4 2438657 1964-09-18 2438620 1964-08-12 37 AAVSO
-69 9.6 2438891 1965-05-10 2438848 1965-03-28 43 AAVSO
-68 9.2 2439129 1966-01-03 2439076 1965-11-11 53 AAVSO
-67 10.2 2439354 1966-08-16 2439304 1966-06-27 50 AAVSO
-66 9.7 2439578 1967-03-28 2439532 1967-02-10 46 SVO
-65   2439801 1967-11-06 2439760 1967-09-26 41 AAVSO
-64 9.5 2440040 1968-07-02 2439988 1968-05-11 52 SVO
-63 10.4 2440267 1969-02-14 2440216 1968-12-25 51 AAVSO
-62 10.0 2440491 1969-09-26 2440444 1969-08-10 47 AAVSO
-61 9.2 2440725 1970-05-18 2440672 1970-03-26 53 AAVSO
-60   2440950 1970-12-29 2440900 1970-11-09 50 AAVSO
-59 9.8 2441181 1971-08-17 2441128 1971-06-25 53 AAVSO
-58 9.5 2441416 1972-04-08 2441356 1972-02-08 60 AAVSO
-57   2441637 1972-11-15 2441584 1972-09-23 53 AAVSO
-56 9.9 2441869 1973-07-05 2441812 1973-05-09 57 SVO
-55 9.3 2442097 1974-02-18 2442040 1973-12-23 57 AAVSO
-54 10.0 2442334 1974-10-13 2442268 1974-08-08 66 AAVSO
-53 9.9 2442559 1975-05-26 2442496 1975-03-24 63 SVO
-52 9.3 2442784 1976-01-06 2442724 1975-11-07 60 AAVSO
-51 9.8 2443008 1976-08-17 2442952 1976-06-22 56 SVO
-50 9.4 2443232 1977-03-29 2443180 1977-02-05 52 SVO
-49   2443456 1977-11-08 2443408 1977-09-21 48 AAVSO
-48 9.9 2443691 1978-07-01 2443636 1978-05-07 55 SVO
-47 9.2 2443916 1979-02-11 2443864 1978-12-21 52 AAVSO
-46 9.9 2444142 1979-09-25 2444092 1979-08-06 50 AAVSO
-45 10.0 2444372 1980-05-12 2444320 1980-03-21 52 SVO
-44 11.0 2444596 1980-12-22 2444548 1980-11-04 48 AAVSO
-43 9.6 2444824 1981-08-07 2444776 1981-06-20 48 SVO
-42 9.8 2445053 1982-03-24 2445004 1982-02-03 49 SVO
-41   2445287 1982-11-13 2445232 1982-09-19 55 AAVSO
-40 10.6 2445517 1983-07-01 2445460 1983-05-05 57 SVO
-39 10.1 2445747 1984-02-16 2445688 1983-12-19 59 AAVSO
-38 9.8 2445971 1984-09-27 2445916 1984-08-03 55 AAVSO
-37 9.5 2446211 1985-05-25 2446144 1985-03-19 67 SVO
-36 9.9 2446425 1985-12-25 2446372 1985-11-02 53 AAVSO
-35 9.5 2446660 1986-08-17 2446600 1986-06-18 60 SVO
-34 9.7 2446888 1987-04-02 2446828 1987-02-01 60 SVO
-33   2447105 1987-11-05 2447056 1987-09-17 49 AAVSO
-32 9.3 2447334 1988-06-21 2447284 1988-05-02 50 SVO
-31 10.9 2447561 1989-02-03 2447512 1988-12-16 49 SVO
-30   2447788 1989-09-18 2447740 1989-08-01 48 AAVSO
-29 10.4 2448018 1990-05-06 2447968 1990-03-17 50 SVO
-28   2448238 1990-12-12 2448196 1990-10-31 42 AAVSO
-27 10.3 2448460 1991-07-22 2448424 1991-06-16 36 SVO
-26 9.6 2448689 1992-03-07 2448652 1992-01-30 37 SVO
-25   2448909 1992-10-13 2448880 1992-09-14 29 AAVSO
-24 10.0 2449138 1993-05-30 2449108 1993-04-30 30 SVO
-23   2449363 1994-01-10 2449336 1993-12-14 27 AAVSO
-22 9.1 2449585 1994-08-20 2449564 1994-07-30 21 SVO
-21 10.1 2449814 1995-04-06 2449792 1995-03-15 22 SVO
-20   2450042 1995-11-20 2450020 1995-10-29 22 AAVSO
-19 9.6 2450259 1996-06-24 2450248 1996-06-13 11 SVO
-18   2450489 1997-02-09 2450476 1997-01-27 13 AAVSO
-17   2450727 1997-10-05 2450704 1997-09-12 23 AAVSO
-16 10.0 2450945 1998-05-11 2450932 1998-04-28 13 SVO
-15   2451167 1998-12-19 2451160 1998-12-12 7 AAVSO
-14 9.6 2451391 1999-07-31 2451388 1999-07-28 3 SVO
-13 10.0 2451622 2000-03-18 2451616 2000-03-12 6 SVO
-12   2451849 2000-10-31 2451844 2000-10-26 5 AAVSO
-11 9.6 2452084 2001-06-23 2452072 2001-06-11 12 SVO
-10 9.7 2452308 2002-02-02 2452300 2002-01-25 8 SVO
-9   2452535 2002-09-17 2452528 2002-09-10 7 AAVSO
-8 10.0 2452762 2003-05-02 2452756 2003-04-26 6 SVO
-7   2452994 2003-12-20 2452984 2003-12-10 10 AAVSO
-6   2453219 2004-08-01 2453212 2004-07-25 7 AAVSO
-5 9.1 2453442 2005-03-12 2453440 2005-03-10 2 SVO
-4   2453687 2005-11-12 2453668 2005-10-24 19 AAVSO
-3 9.4 2453902 2006-06-15 2453896 2006-06-09 6 SVO
-2   2454144 2007-02-12 2454124 2007-01-23 20 AAVSO
-1   2454358 2007-09-14 2454352 2007-09-08 6 AAVSO
0 9.3 2454584 2008-04-27 2454580 2008-04-23 4 SVO
1   2454809 2008-12-08 2454808 2008-12-07 1 AAVSO
2 9.2 2455043 2009-07-30 2455036 2009-07-23 7 SVO
3 10.2 2455274 2010-03-18 2455264 2010-03-08 10 SVO
4   2455504 2010-11-03 2455492 2010-10-22 12 AAVSO
5 9.9 2455724 2011-06-11 2455720 2011-06-07 4 SVO
6 9.6 2455954 2012-01-27 2455948 2012-01-21 6 AAVSO
7 10.2 2456180 2012-09-09 2456176 2012-09-05 4 AAVSO
8 9.9 2456405 2013-04-22 2456404 2013-04-21 1 SVO
9 10.0 2456633 2013-12-06 2456632 2013-12-05 1 AAVSO
10 9.7 2456858 2014-07-19 2456860 2014-07-21 -2 SVO
11 10.5 2457092 2015-03-10 2457088 2015-03-06 4 SVO
12   2457318 2015-10-22 2457316 2015-10-20 2 AAVSO
13 9.5 2457538 2016-05-29 2457544 2016-06-04 -6 SVO
14 9.8 2457769 2017-01-15 2457772 2017-01-18 -3 AAVSO
15 10.0 2457996 2017-08-30 2458000 2017-09-03 -4 AAVSO
16 10.1 2458221 2018-04-12 2458228 2018-04-19 -7 SVO
17   2458445 2018-11-22 2458456 2018-12-03 -11 SVO
18 9.6 2458674 2019-07-09 2458684 2019-07-19 -10 SVO
19 9.9 2458902 2020-02-22 2458912 2020-03-03 -10 SVO
20   2459130 2020-10-07 2459140 2020-10-17 -10 SVO
21 10.0 2459359 2021-05-24 2459368 2021-06-02 -9 SVO
22   2459580 2021-12-31 2459596 2022-01-16 -16 SVO
23 9.8 2459805 2022-08-13 2459824 2022-09-01 -19 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.