Maxima for R Lib
Period: 241.85, Epoch: 2439221
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-163   2399799 1858-04-29 2399799 1858-04-29 0 AnHar, 1909, vol 55, p 95
-160   2400525 1860-04-24 2400525 1860-04-24 0 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-157   2401235 1862-04-04 2401251 1862-04-20 -16 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-155   2401736 1863-08-18 2401734 1863-08-16 2 GuL, 1920, 1.2
-154   2401973 1864-04-11 2401976 1864-04-14 -3 GuL, 1920, 1.2
-152   2402461 1865-08-12 2402460 1865-08-11 1 GuL, 1920, 1.2
-151   2402697 1866-04-05 2402702 1866-04-10 -5 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-148   2403422 1868-03-30 2403427 1868-04-04 -5 AnHar, 1909, vol 55, p 95
-145   2404152 1870-03-30 2404153 1870-03-31 -1 VeBam, 1931, vol 3, p 1
-142   2404884 1872-03-31 2404878 1872-03-25 6 GuL, 1920, 1.2, VeBam, 1931, vol 3, p 1
-133   2407083 1878-04-08 2407055 1878-03-11 28 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-131   2407553 1879-07-22 2407539 1879-07-08 14 GuL, 1920, 1.2
-130   2407793 1880-03-18 2407781 1880-03-06 12 GuL, 1920, 1.2
-107   2413382 1895-07-07 2413343 1895-05-29 39 AnHar, 1909, vol 55, p 95
-104   2414097 1897-06-21 2414069 1897-05-24 28 AnHar, 1909, vol 55, p 95
-103   2414345 1898-02-24 2414310 1898-01-20 35 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-101   2414827 1899-06-21 2414794 1899-05-19 33 AnHar, 1909, vol 55, p 95
-98   2415533 1901-05-28 2415520 1901-05-15 13 AnHar, 1909, vol 55, p 95
-95   2416273 1903-06-07 2416245 1903-05-10 28 AnHar, 1909, vol 55, p 95
-92 10.0 2416993 1905-05-27 2416971 1905-05-05 22 AAVSO
-91   2417260 1906-02-18 2417213 1906-01-02 47 AAVSO
-89 10.0 2417756 1907-06-29 2417696 1907-04-30 60 AAVSO
-80   2419886 1913-04-28 2419873 1913-04-15 13 AAVSO
-75 10.0 2421115 1916-09-08 2421082 1916-08-06 33 AAVSO
-74   2421358 1917-05-09 2421324 1917-04-05 34 AAVSO
-72   2421850 1918-09-13 2421808 1918-08-02 42 AAVSO
-71   2422064 1919-04-15 2422050 1919-04-01 14 AAVSO
-70   2422319 1919-12-26 2422292 1919-11-29 27 AAVSO
-69   2422560 1920-08-23 2422533 1920-07-27 27 AAVSO
-68   2422806 1921-04-26 2422775 1921-03-26 31 AAVSO
-67   2423054 1921-12-30 2423017 1921-11-23 37 AAVSO
-66 10.2 2423271 1922-08-04 2423259 1922-07-23 12 AAVSO
-65 11.0 2423523 1923-04-13 2423501 1923-03-22 22 AAVSO
-63 10.0 2423992 1924-07-25 2423984 1924-07-17 8 SVO
-62 10.1 2424248 1925-04-07 2424226 1925-03-16 22 AAVSO
-60   2424720 1926-07-23 2424710 1926-07-13 10 AAVSO
-57 10.8 2425446 1928-07-18 2425436 1928-07-08 10 AAVSO
-56 10.2 2425680 1929-03-09 2425677 1929-03-06 3 SVO
-55   2425947 1929-12-01 2425919 1929-11-03 28 AAVSO
-54 10.1 2426174 1930-07-16 2426161 1930-07-03 13 SVO
-53 10.8 2426425 1931-03-24 2426403 1931-03-02 22 AAVSO
-51 11.5 2426905 1932-07-16 2426887 1932-06-28 18 SVO
-50 10.5 2427146 1933-03-14 2427129 1933-02-25 17 AAVSO
-48 10.3 2427622 1934-07-03 2427612 1934-06-23 10 SVO
-47   2427876 1935-03-14 2427854 1935-02-20 22 AAVSO
-45 9.5 2428358 1936-07-08 2428338 1936-06-18 20 AAVSO
-44 10.0 2428614 1937-03-21 2428580 1937-02-15 34 AAVSO
-42 10.5 2429091 1938-07-11 2429063 1938-06-13 28 SVO
-41   2429339 1939-03-16 2429305 1939-02-10 34 AAVSO
-39   2429806 1940-06-25 2429789 1940-06-08 17 AAVSO
-38 10.0 2430068 1941-03-14 2430031 1941-02-05 37 AAVSO
-36 10.8 2430548 1942-07-07 2430514 1942-06-03 34 AAVSO
-33 10.2 2431268 1944-06-26 2431240 1944-05-29 28 AAVSO
-30 10.5 2432006 1946-07-04 2431966 1946-05-25 40 AAVSO
-27   2432723 1948-06-20 2432691 1948-05-19 32 AAVSO
-26 10.2 2432962 1949-02-14 2432933 1949-01-16 29 AAVSO
-25   2433181 1949-09-21 2433175 1949-09-15 6 AAVSO
-24 11.5 2433443 1950-06-10 2433417 1950-05-15 26 AAVSO
-23 9.8 2433669 1951-01-22 2433658 1951-01-11 11 AAVSO
-22 11.0 2433910 1951-09-20 2433900 1951-09-10 10 AAVSO
-21 10.8 2434155 1952-05-22 2434142 1952-05-09 13 AAVSO
-20 10.5 2434395 1953-01-17 2434384 1953-01-06 11 AAVSO
-19 10.5 2434636 1953-09-15 2434626 1953-09-05 10 AAVSO
-18 12.0 2434903 1954-06-09 2434868 1954-05-05 35 AAVSO
-17 11.2 2435116 1955-01-08 2435110 1955-01-02 6 AAVSO
-16 10.7 2435361 1955-09-10 2435351 1955-08-31 10 SVO
-15 10.3 2435597 1956-05-03 2435593 1956-04-29 4 SVO
-14 10.7 2435840 1957-01-01 2435835 1956-12-27 5 AAVSO
-13 11.0 2436085 1957-09-03 2436077 1957-08-26 8 AAVSO
-12 10.8 2436317 1958-04-23 2436319 1958-04-25 -2 AAVSO
-11 10.9 2436556 1958-12-18 2436561 1958-12-23 -5 AAVSO
-10 10.3 2436804 1959-08-23 2436803 1959-08-22 1 AAVSO
-9 12.9 2437039 1960-04-14 2437044 1960-04-19 -5 AAVSO
-8   2437282 1960-12-13 2437286 1960-12-17 -4 AAVSO
-7 11.0 2437520 1961-08-08 2437528 1961-08-16 -8 AAVSO
-6 10.9 2437762 1962-04-07 2437770 1962-04-15 -8 SVO
-5   2438005 1962-12-06 2438012 1962-12-13 -7 AAVSO
-4 10.6 2438246 1963-08-04 2438254 1963-08-12 -8 AAVSO
-3 11.2 2438479 1964-03-24 2438495 1964-04-09 -16 AAVSO
-2   2438728 1964-11-28 2438737 1964-12-07 -9 AAVSO
-1 10.2 2438971 1965-07-29 2438979 1965-08-06 -8 AAVSO
0 10.9 2439215 1966-03-30 2439221 1966-04-05 -6 AAVSO
1   2439451 1966-11-21 2439463 1966-12-03 -12 AAVSO
2 10.4 2439691 1967-07-19 2439705 1967-08-02 -14 SVO
3 11.4 2439935 1968-03-19 2439947 1968-03-31 -12 AAVSO
4   2440175 1968-11-14 2440188 1968-11-27 -13 AAVSO
5 10.7 2440415 1969-07-12 2440430 1969-07-27 -15 AAVSO
6 10.5 2440661 1970-03-15 2440672 1970-03-26 -11 AAVSO
7   2440906 1970-11-15 2440914 1970-11-23 -8 AAVSO
8 10.4 2441133 1971-06-30 2441156 1971-07-23 -23 SVO
9 11.0 2441386 1972-03-09 2441398 1972-03-21 -12 AAVSO
10   2441626 1972-11-04 2441640 1972-11-18 -14 AAVSO
11 10.5 2441871 1973-07-07 2441881 1973-07-17 -10 SVO
12 10.9 2442106 1974-02-27 2442123 1974-03-16 -17 AAVSO
13   2442354 1974-11-02 2442365 1974-11-13 -11 AAVSO
14 11.0 2442590 1975-06-26 2442607 1975-07-13 -17 SVO
15 10.4 2442838 1976-02-29 2442849 1976-03-11 -11 AAVSO
16 12.6 2443073 1976-10-21 2443091 1976-11-08 -18 AAVSO
17 10.1 2443327 1977-07-02 2443332 1977-07-07 -5 SVO
18 10.5 2443564 1978-02-24 2443574 1978-03-06 -10 AAVSO
19 12.2 2443806 1978-10-24 2443816 1978-11-03 -10 AAVSO
20 10.3 2444047 1979-06-22 2444058 1979-07-03 -11 SVO
21 11.6 2444290 1980-02-20 2444300 1980-03-01 -10 AAVSO
22 11.5 2444529 1980-10-16 2444542 1980-10-29 -13 AAVSO
23 10.7 2444771 1981-06-15 2444784 1981-06-28 -13 SVO
24 10.9 2445011 1982-02-10 2445025 1982-02-24 -14 AAVSO
25 11.4 2445256 1982-10-13 2445267 1982-10-24 -11 AAVSO
26 11.1 2445498 1983-06-12 2445509 1983-06-23 -11 SVO
27 10.3 2445734 1984-02-03 2445751 1984-02-20 -17 AAVSO
28 10.2 2445977 1984-10-03 2445993 1984-10-19 -16 AAVSO
29 11.3 2446240 1985-06-23 2446235 1985-06-18 5 SVO
30 11.1 2446479 1986-02-17 2446477 1986-02-15 2 AAVSO
31 11.8 2446725 1986-10-21 2446718 1986-10-14 7 AAVSO
32 10.9 2446976 1987-06-29 2446960 1987-06-13 16 SVO
33 10.8 2447227 1988-03-06 2447202 1988-02-10 25 SVO
34   2447465 1988-10-30 2447444 1988-10-09 21 AAVSO
35 10.8 2447710 1989-07-02 2447686 1989-06-08 24 SVO
36 10.7 2447959 1990-03-08 2447928 1990-02-05 31 SVO
37   2448194 1990-10-29 2448169 1990-10-04 25 AAVSO
38 10.4 2448420 1991-06-12 2448411 1991-06-03 9 SVO
39   2448671 1992-02-18 2448653 1992-01-31 18 AAVSO
40   2448910 1992-10-14 2448895 1992-09-29 15 AAVSO
41 10.6 2449159 1993-06-20 2449137 1993-05-29 22 SVO
42 10.6 2449398 1994-02-14 2449379 1994-01-26 19 SVO
43   2449636 1994-10-10 2449621 1994-09-25 15 AAVSO
44 10.5 2449892 1995-06-23 2449862 1995-05-24 30 SVO
45 10.6 2450136 1996-02-22 2450104 1996-01-21 32 SVO
46   2450375 1996-10-18 2450346 1996-09-19 29 AAVSO
47 10.8 2450623 1997-06-23 2450588 1997-05-19 35 SVO
48   2450865 1998-02-20 2450830 1998-01-16 35 AAVSO
49   2451108 1998-10-21 2451072 1998-09-15 36 AAVSO
50 10.4 2451361 1999-07-01 2451314 1999-05-15 47 SVO
51 11.2 2451603 2000-02-28 2451555 2000-01-11 48 SVO
52   2451840 2000-10-22 2451797 2000-09-09 43 AAVSO
53 10.8 2452094 2001-07-03 2452039 2001-05-09 55 SVO
54   2452326 2002-02-20 2452281 2002-01-06 45 AAVSO
55   2452580 2002-11-01 2452523 2002-09-05 57 AAVSO
56 11.1 2452826 2003-07-05 2452765 2003-05-05 61 SVO
57 10.7 2453063 2004-02-27 2453006 2004-01-01 57 SVO
58   2453321 2004-11-11 2453248 2004-08-30 73 AAVSO
59 11.0 2453565 2005-07-13 2453490 2005-04-29 75 SVO
60 10.8 2453806 2006-03-11 2453732 2005-12-27 74 SVO
61   2454035 2006-10-26 2453974 2006-08-26 61 AAVSO
62 11.4 2454294 2007-07-12 2454216 2007-04-25 78 SVO
63 10.9 2454531 2008-03-05 2454458 2007-12-23 73 SVO
64   2454769 2008-10-29 2454699 2008-08-20 70 AAVSO
65 10.6 2455017 2009-07-04 2454941 2009-04-19 76 SVO
66 10.8 2455255 2010-02-27 2455183 2009-12-17 72 SVO
67 10.5 2455493 2010-10-23 2455425 2010-08-16 68 AAVSO
68 11.0 2455741 2011-06-28 2455667 2011-04-15 74 SVO
69 10.7 2455982 2012-02-24 2455909 2011-12-13 73 SVO
70   2456222 2012-10-21 2456151 2012-08-11 71 AAVSO
71 11.3 2456473 2013-06-29 2456392 2013-04-09 81 AAVSO
72 11.1 2456716 2014-02-27 2456634 2013-12-07 82 AAVSO
73   2456958 2014-10-27 2456876 2014-08-06 82 AAVSO
74 10.8 2457200 2015-06-26 2457118 2015-04-05 82 SVO
75 11.3 2457446 2016-02-27 2457360 2015-12-03 86 SVO
76 11.4 2457673 2016-10-11 2457602 2016-08-01 71 AAVSO
77 10.9 2457923 2017-06-18 2457843 2017-03-30 80 SVO
78 11.1 2458160 2018-02-10 2458085 2017-11-27 75 SVO
79   2458400 2018-10-08 2458327 2018-07-27 73 SVO
80 11.0 2458653 2019-06-18 2458569 2019-03-26 84 SVO
81 11.5 2458890 2020-02-10 2458811 2019-11-23 79 SVO
82   2459125 2020-10-02 2459053 2020-07-22 72 SVO
83 10.7 2459362 2021-05-27 2459295 2021-03-21 67 SVO
84   2459610 2022-01-30 2459536 2021-11-17 74 SVO
85   2459850 2022-09-27 2459778 2022-07-17 72 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.