Maxima for X Oph
Period: 328.85, Epoch: 2444729
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-104   2410062 1886-06-04 2410529 1887-09-14 -467 AnHar, 1909, vol 55, p 95
-103   2410356 1887-03-25 2410857 1888-08-07 -501 GuL, 1920, 1.2
-98   2412063 1891-11-26 2412502 1893-02-07 -439 AnHar, 1909, vol 55, p 95
-96   2412728 1893-09-21 2413159 1894-11-26 -431 GuL, 1920, 1.2
-95   2413082 1894-09-10 2413488 1895-10-21 -406 AnHar, 1909, vol 55, p 95
-94   2413411 1895-08-05 2413817 1896-09-14 -406 AnHar, 1909, vol 55, p 95
-93   2413743 1896-07-02 2414146 1897-08-09 -403 AnHar, 1909, vol 55, p 95
-92   2414090 1897-06-14 2414475 1898-07-04 -385 AnHar, 1909, vol 55, p 95
-90   2414770 1899-04-25 2415133 1900-04-23 -363 SVO
-89   2415110 1900-03-31 2415461 1901-03-17 -351 SVO
-87   2415762 1902-01-12 2416119 1903-01-04 -357 SVO
-85   2416419 1903-10-31 2416777 1904-10-23 -358 GuL, 1920, 1.2
-84 6.8 2416760 1904-10-06 2417106 1905-09-17 -346 AAVSO
-83 7.3 2417089 1905-08-31 2417434 1906-08-11 -345 AAVSO
-82 7.1 2417444 1906-08-21 2417763 1907-07-06 -319 SVO
-81 6.8 2417761 1907-07-04 2418092 1908-05-30 -331 AAVSO
-80 6.6 2418087 1908-05-25 2418421 1909-04-24 -334 SVO
-79 6.4 2418449 1909-05-22 2418750 1910-03-19 -301 AAVSO
-78   2418776 1910-04-14 2419079 1911-02-11 -303 AAVSO
-76 6.9 2419439 1912-02-06 2419736 1912-11-29 -297 SVO
-75 6.5 2419761 1912-12-24 2420065 1913-10-24 -304 SVO
-74 6.8 2420096 1913-11-24 2420394 1914-09-18 -298 SVO
-73 6.7 2420445 1914-11-08 2420723 1915-08-13 -278 SVO
-72 6.8 2420775 1915-10-04 2421052 1916-07-07 -277 SVO
-71 7.0 2421129 1916-09-22 2421381 1917-06-01 -252 SVO
-70 7.1 2421468 1917-08-27 2421710 1918-04-26 -242 SVO
-69 6.7 2421801 1918-07-26 2422038 1919-03-20 -237 SVO
-68 6.6 2422138 1919-06-28 2422367 1920-02-12 -229 SVO
-67 6.7 2422473 1920-05-28 2422696 1921-01-06 -223 SVO
-66 6.9 2422821 1921-05-11 2423025 1921-12-01 -204 SVO
-65 6.6 2423152 1922-04-07 2423354 1922-10-26 -202 SVO
-64 6.7 2423495 1923-03-16 2423683 1923-09-20 -188 SVO
-63 6.7 2423827 1924-02-11 2424011 1924-08-13 -184 SVO
-62 6.9 2424163 1925-01-12 2424340 1925-07-08 -177 SVO
-61 6.9 2424494 1925-12-09 2424669 1926-06-02 -175 SVO
-60 6.8 2424830 1926-11-10 2424998 1927-04-27 -168 SVO
-59 7.0 2425169 1927-10-15 2425327 1928-03-21 -158 SVO
-58 6.8 2425507 1928-09-17 2425656 1929-02-13 -149 SVO
-57 6.8 2425843 1929-08-19 2425985 1930-01-08 -142 SVO
-56 7.0 2426166 1930-07-08 2426313 1930-12-02 -147 SVO
-55 6.7 2426491 1931-05-29 2426642 1931-10-27 -151 SVO
-54 6.8 2426823 1932-04-25 2426971 1932-09-20 -148 SVO
-53 6.8 2427150 1933-03-18 2427300 1933-08-15 -150 SVO
-52 7.0 2427484 1934-02-15 2427629 1934-07-10 -145 SVO
-51 6.9 2427834 1935-01-31 2427958 1935-06-04 -124 SVO
-50 6.9 2428146 1935-12-09 2428287 1936-04-28 -141 SVO
-49 6.9 2428489 1936-11-16 2428615 1937-03-22 -126 SVO
-48 6.7 2428810 1937-10-03 2428944 1938-02-14 -134 SVO
-47 7.0 2429140 1938-08-29 2429273 1939-01-09 -133 SVO
-46 6.9 2429468 1939-07-23 2429602 1939-12-04 -134 SVO
-45 6.9 2429800 1940-06-19 2429931 1940-10-28 -131 SVO
-44 7.0 2430137 1941-05-22 2430260 1941-09-22 -123 SVO
-43 7.0 2430468 1942-04-18 2430588 1942-08-16 -120 SVO
-42   2430784 1943-02-28 2430917 1943-07-11 -133 AAVSO
-41 7.0 2431136 1944-02-15 2431246 1944-06-04 -110 SVO
-40   2431479 1945-01-23 2431575 1945-04-29 -96 AAVSO
-39 6.6 2431817 1945-12-27 2431904 1946-03-24 -87 AAVSO
-38 6.9 2432117 1946-10-23 2432233 1947-02-16 -116 SVO
-37 7.0 2432453 1947-09-24 2432562 1948-01-11 -109 AAVSO
-36 6.7 2432791 1948-08-27 2432890 1948-12-04 -99 SVO
-35 7.0 2433129 1949-07-31 2433219 1949-10-29 -90 SVO
-34 7.1 2433460 1950-06-27 2433548 1950-09-23 -88 SVO
-33 6.9 2433791 1951-05-24 2433877 1951-08-18 -86 SVO
-32 7.1 2434131 1952-04-28 2434206 1952-07-12 -75 AAVSO
-31 6.9 2434459 1953-03-22 2434535 1953-06-06 -76 SVO
-30 7.0 2434808 1954-03-06 2434864 1954-05-01 -56 SVO
-29 7.0 2435138 1955-01-30 2435192 1955-03-25 -54 SVO
-28 7.0 2435469 1955-12-27 2435521 1956-02-17 -52 AAVSO
-27 7.2 2435805 1956-11-27 2435850 1957-01-11 -45 SVO
-26 7.0 2436138 1957-10-26 2436179 1957-12-06 -41 SVO
-25 7.1 2436473 1958-09-26 2436508 1958-10-31 -35 SVO
-24 7.0 2436811 1959-08-30 2436837 1959-09-25 -26 SVO
-23 6.9 2437157 1960-08-10 2437165 1960-08-18 -8 SVO
-22 6.9 2437492 1961-07-11 2437494 1961-07-13 -2 SVO
-21 7.0 2437822 1962-06-06 2437823 1962-06-07 -1 AAVSO
-20 7.0 2438155 1963-05-05 2438152 1963-05-02 3 SVO
-19 7.0 2438484 1964-03-29 2438481 1964-03-26 3 SVO
-18 7.0 2438825 1965-03-05 2438810 1965-02-18 15 SVO
-17 7.1 2439136 1966-01-10 2439139 1966-01-13 -3 SVO
-16 7.0 2439475 1966-12-15 2439467 1966-12-07 8 SVO
-15 7.0 2439815 1967-11-20 2439796 1967-11-01 19 SVO
-14 6.9 2440139 1968-10-09 2440125 1968-09-25 14 SVO
-13 7.1 2440466 1969-09-01 2440454 1969-08-20 12 SVO
-12 6.9 2440799 1970-07-31 2440783 1970-07-15 16 SVO
-11 7.0 2441139 1971-07-06 2441112 1971-06-09 27 SVO
-10 7.0 2441467 1972-05-29 2441441 1972-05-03 26 SVO
-9 7.0 2441786 1973-04-13 2441769 1973-03-27 17 SVO
-8 7.1 2442089 1974-02-10 2442098 1974-02-19 -9 SVO
-7 7.0 2442437 1975-01-24 2442427 1975-01-14 10 SVO
-6 7.6 2442779 1976-01-01 2442756 1975-12-09 23 AAVSO
-5 7.0 2443092 1976-11-09 2443085 1976-11-02 7 SVO
-4 6.9 2443417 1977-09-30 2443414 1977-09-27 3 SVO
-3 7.0 2443740 1978-08-19 2443742 1978-08-21 -2 SVO
-2 7.0 2444071 1979-07-16 2444071 1979-07-16 0 SVO
-1 6.9 2444397 1980-06-06 2444400 1980-06-09 -3 SVO
0 7.0 2444736 1981-05-11 2444729 1981-05-04 7 SVO
1 7.0 2445075 1982-04-15 2445058 1982-03-29 17 SVO
2 7.0 2445404 1983-03-10 2445387 1983-02-21 17 SVO
3 6.9 2445732 1984-02-01 2445716 1984-01-16 16 SVO
4 6.9 2446064 1984-12-29 2446044 1984-12-09 20 SVO
5 7.0 2446398 1985-11-28 2446373 1985-11-03 25 SVO
6 6.9 2446726 1986-10-22 2446702 1986-09-28 24 SVO
7 6.7 2447056 1987-09-17 2447031 1987-08-23 25 SVO
8 7.1 2447392 1988-08-18 2447360 1988-07-17 32 SVO
9 7.0 2447723 1989-07-15 2447689 1989-06-11 34 SVO
10 7.0 2448054 1990-06-11 2448018 1990-05-06 36 SVO
11 7.2 2448393 1991-05-16 2448346 1991-03-30 47 SVO
12 7.0 2448729 1992-04-16 2448675 1992-02-22 54 SVO
13 7.1 2449067 1993-03-20 2449004 1993-01-16 63 SVO
14 7.2 2449413 1994-03-01 2449333 1993-12-11 80 SVO
15 6.9 2449746 1995-01-28 2449662 1994-11-05 84 SVO
16 6.9 2450082 1995-12-30 2449991 1995-09-30 91 SVO
17 6.9 2450416 1996-11-28 2450319 1996-08-23 97 SVO
18 6.9 2450754 1997-11-01 2450648 1997-07-18 106 SVO
19 7.0 2451098 1998-10-11 2450977 1998-06-12 121 SVO
20 6.8 2451441 1999-09-19 2451306 1999-05-07 135 SVO
21 7.0 2451784 2000-08-27 2451635 2000-03-31 149 SVO
22 7.2 2452133 2001-08-11 2451964 2001-02-23 169 SVO
23 6.9 2452467 2002-07-11 2452293 2002-01-18 174 SVO
24 7.0 2452810 2003-06-19 2452621 2002-12-12 189 SVO
25 6.9 2453149 2004-05-23 2452950 2003-11-06 199 SVO
26 6.8 2453487 2005-04-26 2453279 2004-09-30 208 SVO
27 6.7 2453822 2006-03-27 2453608 2005-08-25 214 SVO
28 6.7 2454162 2007-03-02 2453937 2006-07-20 225 SVO
29 6.9 2454509 2008-02-12 2454266 2007-06-14 243 SVO
30 6.7 2454849 2009-01-17 2454595 2008-05-08 254 SVO
31 6.9 2455184 2009-12-18 2454923 2009-04-01 261 SVO
32 6.6 2455526 2010-11-25 2455252 2010-02-24 274 SVO
33 6.9 2455865 2011-10-30 2455581 2011-01-19 284 SVO
34 6.6 2456209 2012-10-08 2455910 2011-12-14 299 SVO
35 7.1 2456531 2013-08-26 2456239 2012-11-07 292 SVO
36 6.8 2456869 2014-07-30 2456568 2013-10-02 301 SVO
37 6.8 2457197 2015-06-23 2456896 2014-08-26 301 SVO
38 6.8 2457540 2016-05-31 2457225 2015-07-21 315 SVO
39 6.8 2457861 2017-04-17 2457554 2016-06-14 307 SVO
40 6.6 2458192 2018-03-14 2457883 2017-05-09 309 SVO
41 6.7 2458513 2019-01-29 2458212 2018-04-03 301 SVO
42   2458843 2019-12-25 2458541 2019-02-26 302 SVO
43 6.6 2459177 2020-11-23 2458870 2020-01-21 307 SVO
44 6.6 2459511 2021-10-23 2459198 2020-12-14 313 SVO
45 6.6 2459846 2022-09-23 2459527 2021-11-08 319 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.