Maxima for BU Cyg
Period: 157.87, Epoch: 2433096
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-136   2411540 1890-06-21 2411626 1890-09-15 -86 SVO
-135   2411690 1890-11-18 2411784 1891-02-20 -94 SVO
-131   2412330 1892-08-19 2412415 1892-11-12 -85 SVO
-129   2412650 1893-07-05 2412731 1893-09-24 -81 SVO
-126   2413125 1894-10-23 2413204 1895-01-10 -79 SVO
-124   2413450 1895-09-13 2413520 1895-11-22 -70 SVO
-123   2413615 1896-02-25 2413678 1896-04-28 -63 SVO
-122   2413770 1896-07-29 2413836 1896-10-03 -66 SVO
-120   2414090 1897-06-14 2414152 1897-08-15 -62 SVO
-118   2414400 1898-04-20 2414467 1898-06-26 -67 SVO
-117   2414570 1898-10-07 2414625 1898-12-01 -55 SVO
-115   2414900 1899-09-02 2414941 1899-10-13 -41 SVO
-112   2415370 1900-12-16 2415415 1901-01-30 -45 SVO
-110   2415690 1901-11-01 2415730 1901-12-11 -40 SVO
-108   2416010 1902-09-17 2416046 1902-10-23 -36 SVO
-107   2416165 1903-02-19 2416204 1903-03-30 -39 SVO
-106   2416328 1903-08-01 2416362 1903-09-04 -34 SVO
-105   2416485 1904-01-05 2416520 1904-02-09 -35 SVO
-103   2416815 1904-11-30 2416835 1904-12-20 -20 SVO
-99   2417445 1906-08-22 2417467 1906-09-13 -22 SVO
-94   2418250 1908-11-04 2418256 1908-11-10 -6 SVO
-87   2419345 1911-11-04 2419361 1911-11-20 -16 SVO
-83   2419980 1913-07-31 2419993 1913-08-13 -13 SVO
-81   2420300 1914-06-16 2420309 1914-06-25 -9 SVO
-79   2420630 1915-05-12 2420624 1915-05-06 6 SVO
-78   2420780 1915-10-09 2420782 1915-10-11 -2 SVO
-76   2421100 1916-08-24 2421098 1916-08-22 2 SVO
-73   2421575 1917-12-12 2421571 1917-12-08 4 SVO
-70   2422040 1919-03-22 2422045 1919-03-27 -5 SVO
-63   2423150 1922-04-05 2423150 1922-04-05 0 AN, 1928, vol 232, p 274
-62   2423309 1922-09-11 2423308 1922-09-10 1 AN, 1928, vol 232, p 274
-61   2423466 1923-02-15 2423466 1923-02-15 0 AN, 1928, vol 232, p 274
-60   2423620 1923-07-19 2423624 1923-07-23 -4 AN, 1928, vol 232, p 274
-59   2423781 1923-12-27 2423782 1923-12-28 -1 AN, 1928, vol 232, p 274
-58   2423937 1924-05-31 2423940 1924-06-03 -3 AN, 1928, vol 232, p 274
-57   2424092 1924-11-02 2424097 1924-11-07 -5 AN, 1928, vol 232, p 274
-56   2424253 1925-04-12 2424255 1925-04-14 -2 AN, 1928, vol 232, p 274
-55   2424404 1925-09-10 2424413 1925-09-19 -9 AN, 1928, vol 232, p 274
-53   2424729 1926-08-01 2424729 1926-08-01 0 AN, 1928, vol 232, p 274
-52   2424889 1927-01-08 2424887 1927-01-06 2 AN, 1928, vol 232, p 274
-50   2425192 1927-11-07 2425203 1927-11-18 -11 AN, 1928, vol 232, p 274
-48   2425516 1928-09-26 2425518 1928-09-28 -2 HarCi, 1929, vol 345, p 1
-47   2425664 1929-02-21 2425676 1929-03-05 -12 HarCi, 1930, vol 353, p 1
-46 10.8 2425838 1929-08-14 2425834 1929-08-10 4 SVO
-45   2425985 1930-01-08 2425992 1930-01-15 -7 SVO
-44   2426141 1930-06-13 2426150 1930-06-22 -9 HarCi, 1931, vol 367, p 1
-43   2426295 1930-11-14 2426308 1930-11-27 -13 SVO
-42   2426460 1931-04-28 2426465 1931-05-03 -5 SVO
-41   2426620 1931-10-05 2426623 1931-10-08 -3 SVO
-39   2426935 1932-08-15 2426939 1932-08-19 -4 SVO
-37   2427250 1933-06-26 2427255 1933-07-01 -5 SVO
-36   2427415 1933-12-08 2427413 1933-12-06 2 SVO
-35   2427582 1934-05-24 2427571 1934-05-13 11 SVO
-34   2427730 1934-10-19 2427728 1934-10-17 2 SVO
-33   2427885 1935-03-23 2427886 1935-03-24 -1 SVO
-32   2428042 1935-08-27 2428044 1935-08-29 -2 SVO
-30   2428364 1936-07-14 2428360 1936-07-10 4 SVO
-28   2428683 1937-05-29 2428676 1937-05-22 7 SVO
-27   2428831 1937-10-24 2428834 1937-10-27 -3 SVO
-25   2429143 1938-09-01 2429149 1938-09-07 -6 SVO
-23   2429467 1939-07-22 2429465 1939-07-20 2 SVO
-21   2429775 1940-05-25 2429781 1940-05-31 -6 SVO
-20   2429938 1940-11-04 2429939 1940-11-05 -1 SVO
-19   2430090 1941-04-05 2430096 1941-04-11 -6 SVO
-18   2430265 1941-09-27 2430254 1941-09-16 11 SVO
-16   2430570 1942-07-29 2430570 1942-07-29 0 SVO
-15   2430730 1943-01-05 2430728 1943-01-03 2 SVO
-14   2430880 1943-06-04 2430886 1943-06-10 -6 SVO
-13   2431040 1943-11-11 2431044 1943-11-15 -4 SVO
-11   2431360 1944-09-26 2431359 1944-09-25 1 SVO
-9   2431667 1945-07-30 2431675 1945-08-07 -8 SVO
-7   2431992 1946-06-20 2431991 1946-06-19 1 SVO
-5   2432300 1947-04-24 2432307 1947-05-01 -7 SVO
-4   2432470 1947-10-11 2432465 1947-10-06 5 SVO
-2   2432779 1948-08-15 2432780 1948-08-16 -1 SVO
0   2433097 1949-06-29 2433096 1949-06-28 1 SVO
2   2433415 1950-05-13 2433412 1950-05-10 3 SVO
5   2433885 1951-08-26 2433885 1951-08-26 0 SVO
7   2434212 1952-07-18 2434201 1952-07-07 11 SVO
30   2437850 1962-07-04 2437832 1962-06-16 18 SVO
44   2440065 1968-07-27 2440042 1968-07-04 23 SVO
47   2440540 1969-11-14 2440516 1969-10-21 24 SVO
49   2440865 1970-10-05 2440832 1970-09-02 33 SVO
51 10.8 2441175 1971-08-11 2441147 1971-07-14 28 SVO
53   2441490 1972-06-21 2441463 1972-05-25 27 SVO
54   2441650 1972-11-28 2441621 1972-10-30 29 SVO
56 10.0 2441966 1973-10-10 2441937 1973-09-11 29 SVO
58 10.9 2442287 1974-08-27 2442252 1974-07-23 35 SVO
60 11.4 2442601 1975-07-07 2442568 1975-06-04 33 SVO
61   2442750 1975-12-03 2442726 1975-11-09 24 SVO
62   2442920 1976-05-21 2442884 1976-04-15 36 SVO
63 10.7 2443066 1976-10-14 2443042 1976-09-20 24 SVO
65 11.0 2443382 1977-08-26 2443358 1977-08-02 24 SVO
67 11.6 2443699 1978-07-09 2443673 1978-06-13 26 SVO
68   2443845 1978-12-02 2443831 1978-11-18 14 SVO
69   2443995 1979-05-01 2443989 1979-04-25 6 SVO
70 10.7 2444162 1979-10-15 2444147 1979-09-30 15 SVO
72 10.6 2444480 1980-08-28 2444463 1980-08-11 17 SVO
74   2444790 1981-07-04 2444778 1981-06-22 12 SVO
75   2444950 1981-12-11 2444936 1981-11-27 14 SVO
76 10.2 2445111 1982-05-21 2445094 1982-05-04 17 SVO
77 10.7 2445263 1982-10-20 2445252 1982-10-09 11 SVO
78   2445420 1983-03-26 2445410 1983-03-16 10 SVO
79 10.4 2445584 1983-09-06 2445568 1983-08-21 16 SVO
80   2445735 1984-02-04 2445726 1984-01-26 9 SVO
81 10.8 2445899 1984-07-17 2445883 1984-07-01 16 SVO
83 10.0 2446212 1985-05-26 2446199 1985-05-13 13 SVO
84   2446370 1985-10-31 2446357 1985-10-18 13 SVO
85   2446525 1986-04-04 2446515 1986-03-25 10 SVO
86 11.1 2446701 1986-09-27 2446673 1986-08-30 28 SVO
87   2446855 1987-02-28 2446831 1987-02-04 24 SVO
88 10.8 2447016 1987-08-08 2446989 1987-07-12 27 SVO
89   2447180 1988-01-19 2447146 1987-12-16 34 SVO
90 10.8 2447331 1988-06-18 2447304 1988-05-22 27 SVO
91 10.6 2447485 1988-11-19 2447462 1988-10-27 23 SVO
92   2447640 1989-04-23 2447620 1989-04-03 20 SVO
93 10.4 2447807 1989-10-07 2447778 1989-09-08 29 SVO
94   2447979 1990-03-28 2447936 1990-02-13 43 AFOEV
95 10.6 2448128 1990-08-24 2448094 1990-07-21 34 SVO
96 10.5 2448276 1991-01-19 2448252 1990-12-26 24 SVO
97 10.0 2448426 1991-06-18 2448409 1991-06-01 17 SVO
98 10.8 2448591 1991-11-30 2448567 1991-11-06 24 SVO
99 10.3 2448748 1992-05-05 2448725 1992-04-12 23 SVO
100 11.4 2448914 1992-10-18 2448883 1992-09-17 31 SVO
101   2449065 1993-03-18 2449041 1993-02-22 24 SVO
102 10.7 2449227 1993-08-27 2449199 1993-07-30 28 SVO
103 10.2 2449379 1994-01-26 2449357 1994-01-04 22 SVO
104 10.1 2449534 1994-06-30 2449514 1994-06-10 20 SVO
105 10.8 2449697 1994-12-10 2449672 1994-11-15 25 SVO
106 10.4 2449847 1995-05-09 2449830 1995-04-22 17 SVO
107 10.5 2450008 1995-10-17 2449988 1995-09-27 20 SVO
108 10.3 2450165 1996-03-22 2450146 1996-03-03 19 SVO
109 10.5 2450315 1996-08-19 2450304 1996-08-08 11 SVO
110   2450474 1997-01-25 2450462 1997-01-13 12 AFOEV
111 10.6 2450631 1997-07-01 2450620 1997-06-20 11 SVO
112 10.7 2450790 1997-12-07 2450777 1997-11-24 13 SVO
113 10.3 2450947 1998-05-13 2450935 1998-05-01 12 SVO
114 10.2 2451106 1998-10-19 2451093 1998-10-06 13 SVO
115 11.2 2451274 1999-04-05 2451251 1999-03-13 23 SVO
116 10.4 2451435 1999-09-13 2451409 1999-08-18 26 SVO
117   2451585 2000-02-10 2451567 2000-01-23 18 SVO
118 10.2 2451740 2000-07-14 2451725 2000-06-29 15 SVO
119 10.1 2451897 2000-12-18 2451883 2000-12-04 14 SVO
120 10.9 2452061 2001-05-31 2452040 2001-05-10 21 SVO
121 10.3 2452214 2001-10-31 2452198 2001-10-15 16 SVO
122 10.6 2452373 2002-04-08 2452356 2002-03-22 17 SVO
123 10.1 2452536 2002-09-18 2452514 2002-08-27 22 SVO
124 10.5 2452690 2003-02-19 2452672 2003-02-01 18 SVO
125 10.3 2452847 2003-07-26 2452830 2003-07-09 17 SVO
126 10.5 2453011 2004-01-06 2452988 2003-12-14 23 SVO
127 11.0 2453178 2004-06-21 2453145 2004-05-19 33 SVO
128 10.5 2453338 2004-11-28 2453303 2004-10-24 35 SVO
129 10.4 2453489 2005-04-28 2453461 2005-03-31 28 SVO
130 10.3 2453649 2005-10-05 2453619 2005-09-05 30 SVO
131 11.0 2453808 2006-03-13 2453777 2006-02-10 31 SVO
132 10.5 2453977 2006-08-29 2453935 2006-07-18 42 SVO
133 10.2 2454124 2007-01-23 2454093 2006-12-23 31 SVO
134 10.1 2454281 2007-06-29 2454251 2007-05-30 30 SVO
135 10.6 2454445 2007-12-10 2454408 2007-11-03 37 SVO
136 10.5 2454606 2008-05-19 2454566 2008-04-09 40 SVO
137 10.6 2454766 2008-10-26 2454724 2008-09-14 42 SVO
138   2454915 2009-03-24 2454882 2009-02-19 33 SVO
139 10.6 2455074 2009-08-30 2455040 2009-07-27 34 SVO
140 10.5 2455235 2010-02-07 2455198 2010-01-01 37 SVO
141 10.4 2455390 2010-07-12 2455356 2010-06-08 34 SVO
142 10.3 2455544 2010-12-13 2455514 2010-11-13 30 SVO
143 10.1 2455695 2011-05-13 2455671 2011-04-19 24 SVO
144 10.9 2455861 2011-10-26 2455829 2011-09-24 32 SVO
145 10.3 2456017 2012-03-30 2455987 2012-02-29 30 SVO
146 10.6 2456176 2012-09-05 2456145 2012-08-05 31 SVO
147 10.2 2456334 2013-02-10 2456303 2013-01-10 31 SVO
148 10.3 2456487 2013-07-13 2456461 2013-06-17 26 SVO
149 10.2 2456644 2013-12-17 2456619 2013-11-22 25 SVO
150 11.1 2456807 2014-05-29 2456777 2014-04-29 30 SVO
151 10.3 2456962 2014-10-31 2456934 2014-10-03 28 SVO
152 10.9 2457131 2015-04-18 2457092 2015-03-10 39 SVO
153 10.0 2457283 2015-09-17 2457250 2015-08-15 33 SVO
154 10.2 2457433 2016-02-14 2457408 2016-01-20 25 SVO
155 10.1 2457589 2016-07-19 2457566 2016-06-26 23 SVO
156 11.1 2457744 2016-12-21 2457724 2016-12-01 20 SVO
157 10.2 2457908 2017-06-03 2457882 2017-05-08 26 SVO
158 11.0 2458064 2017-11-06 2458039 2017-10-12 25 SVO
159 10.2 2458221 2018-04-12 2458197 2018-03-19 24 SVO
160 10.5 2458369 2018-09-07 2458355 2018-08-24 14 SVO
161 10.6 2458527 2019-02-12 2458513 2019-01-29 14 SVO
162 10.9 2458688 2019-07-23 2458671 2019-07-06 17 SVO
163 10.6 2458845 2019-12-27 2458829 2019-12-11 16 SVO
164 10.3 2459004 2020-06-03 2458987 2020-05-17 17 SVO
165 10.4 2459156 2020-11-02 2459145 2020-10-22 11 SVO
166 10.4 2459310 2021-04-05 2459302 2021-03-28 8 SVO
167 10.3 2459465 2021-09-07 2459460 2021-09-02 5 SVO
168 10.4 2459626 2022-02-15 2459618 2022-02-07 8 SVO
169 10.2 2459788 2022-07-27 2459776 2022-07-15 12 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.