Maxima for X Oph
Period: 338, Epoch: 2453477
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-130   2410062 1886-06-04 2409537 1884-12-26 525 AnHar, 1909, vol 55, p 95
-129   2410356 1887-03-25 2409875 1885-11-29 481 GuL, 1920, 1.2
-124   2412063 1891-11-26 2411565 1890-07-16 498 AnHar, 1909, vol 55, p 95
-122   2412728 1893-09-21 2412241 1892-05-22 487 GuL, 1920, 1.2
-121   2413082 1894-09-10 2412579 1893-04-25 503 AnHar, 1909, vol 55, p 95
-120   2413411 1895-08-05 2412917 1894-03-29 494 AnHar, 1909, vol 55, p 95
-119   2413743 1896-07-02 2413255 1895-03-02 488 AnHar, 1909, vol 55, p 95
-118   2414090 1897-06-14 2413593 1896-02-03 497 AnHar, 1909, vol 55, p 95
-116   2414770 1899-04-25 2414269 1897-12-10 501 SVO
-115   2415110 1900-03-31 2414607 1898-11-13 503 SVO
-113   2415762 1902-01-12 2415283 1900-09-20 479 SVO
-111   2416419 1903-10-31 2415959 1902-07-28 460 GuL, 1920, 1.2
-110 6.8 2416760 1904-10-06 2416297 1903-07-01 463 AAVSO
-109 7.3 2417089 1905-08-31 2416635 1904-06-03 454 AAVSO
-108 7.1 2417444 1906-08-21 2416973 1905-05-07 471 SVO
-107 6.8 2417761 1907-07-04 2417311 1906-04-10 450 AAVSO
-106 6.6 2418087 1908-05-25 2417649 1907-03-14 438 SVO
-105 6.4 2418449 1909-05-22 2417987 1908-02-15 462 AAVSO
-104   2418776 1910-04-14 2418325 1909-01-18 451 AAVSO
-102 6.9 2419439 1912-02-06 2419001 1910-11-25 438 SVO
-101 6.5 2419761 1912-12-24 2419339 1911-10-29 422 SVO
-100 6.8 2420096 1913-11-24 2419677 1912-10-01 419 SVO
-99 6.7 2420445 1914-11-08 2420015 1913-09-04 430 SVO
-98 6.8 2420775 1915-10-04 2420353 1914-08-08 422 SVO
-97 7.0 2421129 1916-09-22 2420691 1915-07-12 438 SVO
-96 7.1 2421468 1917-08-27 2421029 1916-06-14 439 SVO
-95 6.7 2421801 1918-07-26 2421367 1917-05-18 434 SVO
-94 6.6 2422138 1919-06-28 2421705 1918-04-21 433 SVO
-93 6.7 2422473 1920-05-28 2422043 1919-03-25 430 SVO
-92 6.9 2422821 1921-05-11 2422381 1920-02-26 440 SVO
-91 6.6 2423152 1922-04-07 2422719 1921-01-29 433 SVO
-90 6.7 2423495 1923-03-16 2423057 1922-01-02 438 SVO
-89 6.7 2423827 1924-02-11 2423395 1922-12-06 432 SVO
-88 6.9 2424163 1925-01-12 2423733 1923-11-09 430 SVO
-87 6.9 2424494 1925-12-09 2424071 1924-10-12 423 SVO
-86 6.8 2424830 1926-11-10 2424409 1925-09-15 421 SVO
-85 7.0 2425169 1927-10-15 2424747 1926-08-19 422 SVO
-84 6.8 2425507 1928-09-17 2425085 1927-07-23 422 SVO
-83 6.8 2425843 1929-08-19 2425423 1928-06-25 420 SVO
-82 7.0 2426166 1930-07-08 2425761 1929-05-29 405 SVO
-81 6.7 2426491 1931-05-29 2426099 1930-05-02 392 SVO
-80 6.8 2426823 1932-04-25 2426437 1931-04-05 386 SVO
-79 6.8 2427150 1933-03-18 2426775 1932-03-08 375 SVO
-78 7.0 2427484 1934-02-15 2427113 1933-02-09 371 SVO
-77 6.9 2427834 1935-01-31 2427451 1934-01-13 383 SVO
-76 6.9 2428146 1935-12-09 2427789 1934-12-17 357 SVO
-75 6.9 2428489 1936-11-16 2428127 1935-11-20 362 SVO
-74 6.7 2428810 1937-10-03 2428465 1936-10-23 345 SVO
-73 7.0 2429140 1938-08-29 2428803 1937-09-26 337 SVO
-72 6.9 2429468 1939-07-23 2429141 1938-08-30 327 SVO
-71 6.9 2429800 1940-06-19 2429479 1939-08-03 321 SVO
-70 7.0 2430137 1941-05-22 2429817 1940-07-06 320 SVO
-69 7.0 2430468 1942-04-18 2430155 1941-06-09 313 SVO
-68   2430784 1943-02-28 2430493 1942-05-13 291 AAVSO
-67 7.0 2431136 1944-02-15 2430831 1943-04-16 305 SVO
-66   2431479 1945-01-23 2431169 1944-03-19 310 AAVSO
-65 6.6 2431817 1945-12-27 2431507 1945-02-20 310 AAVSO
-64 6.9 2432117 1946-10-23 2431845 1946-01-24 272 SVO
-63 7.0 2432453 1947-09-24 2432183 1946-12-28 270 AAVSO
-62 6.7 2432791 1948-08-27 2432521 1947-12-01 270 SVO
-61 7.0 2433129 1949-07-31 2432859 1948-11-03 270 SVO
-60 7.1 2433460 1950-06-27 2433197 1949-10-07 263 SVO
-59 6.9 2433791 1951-05-24 2433535 1950-09-10 256 SVO
-58 7.1 2434131 1952-04-28 2433873 1951-08-14 258 AAVSO
-57 6.9 2434459 1953-03-22 2434211 1952-07-17 248 SVO
-56 7.0 2434808 1954-03-06 2434549 1953-06-20 259 SVO
-55 7.0 2435138 1955-01-30 2434887 1954-05-24 251 SVO
-54 7.0 2435469 1955-12-27 2435225 1955-04-27 244 AAVSO
-53 7.2 2435805 1956-11-27 2435563 1956-03-30 242 SVO
-52 7.0 2436138 1957-10-26 2435901 1957-03-03 237 SVO
-51 7.1 2436473 1958-09-26 2436239 1958-02-04 234 SVO
-50 7.0 2436811 1959-08-30 2436577 1959-01-08 234 SVO
-49 6.9 2437157 1960-08-10 2436915 1959-12-12 242 SVO
-48 6.9 2437492 1961-07-11 2437253 1960-11-14 239 SVO
-47 7.0 2437822 1962-06-06 2437591 1961-10-18 231 AAVSO
-46 7.0 2438155 1963-05-05 2437929 1962-09-21 226 SVO
-45 7.0 2438484 1964-03-29 2438267 1963-08-25 217 SVO
-44 7.0 2438825 1965-03-05 2438605 1964-07-28 220 SVO
-43 7.1 2439136 1966-01-10 2438943 1965-07-01 193 SVO
-42 7.0 2439475 1966-12-15 2439281 1966-06-04 194 SVO
-41 7.0 2439815 1967-11-20 2439619 1967-05-08 196 SVO
-40 6.9 2440139 1968-10-09 2439957 1968-04-10 182 SVO
-39 7.1 2440466 1969-09-01 2440295 1969-03-14 171 SVO
-38 6.9 2440799 1970-07-31 2440633 1970-02-15 166 SVO
-37 7.0 2441139 1971-07-06 2440971 1971-01-19 168 SVO
-36 7.0 2441467 1972-05-29 2441309 1971-12-23 158 SVO
-35 7.0 2441786 1973-04-13 2441647 1972-11-25 139 SVO
-34 7.1 2442089 1974-02-10 2441985 1973-10-29 104 SVO
-33 7.0 2442437 1975-01-24 2442323 1974-10-02 114 SVO
-32 7.6 2442779 1976-01-01 2442661 1975-09-05 118 AAVSO
-31 7.0 2443092 1976-11-09 2442999 1976-08-08 93 SVO
-30 6.9 2443417 1977-09-30 2443337 1977-07-12 80 SVO
-29 7.0 2443740 1978-08-19 2443675 1978-06-15 65 SVO
-28 7.0 2444071 1979-07-16 2444013 1979-05-19 58 SVO
-27 6.9 2444397 1980-06-06 2444351 1980-04-21 46 SVO
-26 7.0 2444736 1981-05-11 2444689 1981-03-25 47 SVO
-25 7.0 2445075 1982-04-15 2445027 1982-02-26 48 SVO
-24 7.0 2445404 1983-03-10 2445365 1983-01-30 39 SVO
-23 6.9 2445732 1984-02-01 2445703 1984-01-03 29 SVO
-22 6.9 2446064 1984-12-29 2446041 1984-12-06 23 SVO
-21 7.0 2446398 1985-11-28 2446379 1985-11-09 19 SVO
-20 6.9 2446726 1986-10-22 2446717 1986-10-13 9 SVO
-19 6.7 2447056 1987-09-17 2447055 1987-09-16 1 SVO
-18 7.1 2447392 1988-08-18 2447393 1988-08-19 -1 SVO
-17 7.0 2447723 1989-07-15 2447731 1989-07-23 -8 SVO
-16 7.0 2448054 1990-06-11 2448069 1990-06-26 -15 SVO
-15 7.2 2448393 1991-05-16 2448407 1991-05-30 -14 SVO
-14 7.0 2448729 1992-04-16 2448745 1992-05-02 -16 SVO
-13 7.1 2449067 1993-03-20 2449083 1993-04-05 -16 SVO
-12 7.2 2449413 1994-03-01 2449421 1994-03-09 -8 SVO
-11 6.9 2449746 1995-01-28 2449759 1995-02-10 -13 SVO
-10 6.9 2450082 1995-12-30 2450097 1996-01-14 -15 SVO
-9 6.9 2450416 1996-11-28 2450435 1996-12-17 -19 SVO
-8 6.9 2450754 1997-11-01 2450773 1997-11-20 -19 SVO
-7 7.0 2451098 1998-10-11 2451111 1998-10-24 -13 SVO
-6 6.8 2451441 1999-09-19 2451449 1999-09-27 -8 SVO
-5 7.0 2451784 2000-08-27 2451787 2000-08-30 -3 SVO
-4 7.2 2452133 2001-08-11 2452125 2001-08-03 8 SVO
-3 6.9 2452467 2002-07-11 2452463 2002-07-07 4 SVO
-2 7.0 2452810 2003-06-19 2452801 2003-06-10 9 SVO
-1 6.9 2453149 2004-05-23 2453139 2004-05-13 10 SVO
0 6.8 2453487 2005-04-26 2453477 2005-04-16 10 SVO
1 6.7 2453822 2006-03-27 2453815 2006-03-20 7 SVO
2 6.7 2454162 2007-03-02 2454153 2007-02-21 9 SVO
3 6.9 2454509 2008-02-12 2454491 2008-01-25 18 SVO
4 6.7 2454849 2009-01-17 2454829 2008-12-28 20 SVO
5 6.9 2455184 2009-12-18 2455167 2009-12-01 17 SVO
6 6.6 2455526 2010-11-25 2455505 2010-11-04 21 SVO
7 6.9 2455865 2011-10-30 2455843 2011-10-08 22 SVO
8 6.6 2456209 2012-10-08 2456181 2012-09-10 28 SVO
9 7.1 2456531 2013-08-26 2456519 2013-08-14 12 SVO
10 6.8 2456869 2014-07-30 2456857 2014-07-18 12 SVO
11 6.8 2457197 2015-06-23 2457195 2015-06-21 2 SVO
12 6.8 2457540 2016-05-31 2457533 2016-05-24 7 SVO
13 6.8 2457861 2017-04-17 2457871 2017-04-27 -10 SVO
14 6.6 2458192 2018-03-14 2458209 2018-03-31 -17 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.