Maxima for R Oph
Period: 306.5, Epoch: 2445234
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-156   2398008 1853-06-03 2397420 1851-10-24 588 GuL, 1920, 1.2
-152   2399209 1856-09-16 2398646 1855-03-03 563 AnHar, 1909, vol 55, p 95
-151 8.1 2399511 1857-07-15 2398953 1856-01-04 558 SVO
-150 6.9 2399809 1858-05-09 2399259 1856-11-05 550 SVO
-145   2401329 1862-07-07 2400792 1861-01-16 537 AnHar, 1909, vol 55, p 95
-144   2401626 1863-04-30 2401098 1861-11-18 528 AnHar, 1909, vol 55, p 95
-139   2403153 1867-07-05 2402631 1866-01-29 522 AnHar, 1909, vol 55, p 95
-138   2403440 1868-04-17 2402937 1866-12-01 503 AnHar, 1909, vol 55, p 95
-137   2403743 1869-02-14 2403244 1867-10-04 499 VeBam, 1931, vol 3, p 1
-135   2404350 1870-10-14 2403857 1869-06-08 493 VeBam, 1931, vol 3, p 1
-134   2404645 1871-08-05 2404163 1870-04-10 482 AnHar, 1909, vol 55, p 95
-128   2406476 1876-08-09 2406002 1875-04-23 474 AnHar, 1909, vol 55, p 95
-127   2406769 1877-05-29 2406309 1876-02-24 460 AnHar, 1909, vol 55, p 95
-126   2407078 1878-04-03 2406615 1876-12-26 463 AnHar, 1909, vol 55, p 95
-111   2411625 1890-09-14 2411213 1889-07-29 412 AnHar, 1909, vol 55, p 95
-105   2413404 1895-07-29 2413052 1894-08-11 352 AnHar, 1909, vol 55, p 95
-104   2413712 1896-06-01 2413358 1895-06-13 354 AnHar, 1909, vol 55, p 95
-103   2414018 1897-04-03 2413665 1896-04-15 353 SVO
-100   2414926 1899-09-28 2414584 1898-10-21 342 AnHar, 1909, vol 55, p 95
-99   2415218 1900-07-17 2414891 1899-08-24 327 AnHar, 1909, vol 55, p 95
-98   2415530 1901-05-25 2415197 1900-06-26 333 AnHar, 1909, vol 55, p 95
-97   2415834 1902-03-25 2415504 1901-04-29 330 AnHar, 1909, vol 55, p 95
-94   2416736 1904-09-12 2416423 1903-11-04 313 AnHar, 1909, vol 55, p 95
-93 7.3 2417042 1905-07-15 2416730 1904-09-06 312 AAVSO
-92   2417352 1906-05-21 2417036 1905-07-09 316 AAVSO
-91   2417641 1907-03-06 2417343 1906-05-12 298 AAVSO
-90   2417946 1908-01-05 2417649 1907-03-14 297 AAVSO
-89   2418243 1908-10-28 2417956 1908-01-15 287 AAVSO
-88 7.8 2418570 1909-09-20 2418262 1908-11-16 308 AAVSO
-87 7.8 2418868 1910-07-15 2418569 1909-09-19 299 AAVSO
-86 7.3 2419161 1911-05-04 2418875 1910-07-22 286 SVO
-85 7.2 2419454 1912-02-21 2419182 1911-05-25 272 SVO
-84   2419761 1912-12-24 2419488 1912-03-26 273 AAVSO
-83 7.9 2420061 1913-10-20 2419795 1913-01-27 266 AAVSO
-82 7.5 2420365 1914-08-20 2420101 1913-11-29 264 SVO
-81 8.0 2420670 1915-06-21 2420408 1914-10-02 262 SVO
-80 6.8 2420976 1916-04-22 2420714 1915-08-04 262 AAVSO
-79   2421276 1917-02-16 2421021 1916-06-06 255 AAVSO
-78   2421576 1917-12-13 2421327 1917-04-08 249 AAVSO
-77 8.0 2421868 1918-10-01 2421634 1918-02-09 234 AAVSO
-76 7.0 2422169 1919-07-29 2421940 1918-12-12 229 SVO
-75 8.3 2422464 1920-05-19 2422247 1919-10-15 217 SVO
-74 7.2 2422780 1921-03-31 2422553 1920-08-16 227 AAVSO
-73 7.5 2423081 1922-01-26 2422860 1921-06-19 221 AAVSO
-72 7.5 2423384 1922-11-25 2423166 1922-04-21 218 SVO
-71 7.5 2423680 1923-09-17 2423473 1923-02-22 207 SVO
-70 7.5 2423983 1924-07-16 2423779 1923-12-25 204 SVO
-69 7.8 2424292 1925-05-21 2424086 1924-10-27 206 SVO
-68 7.3 2424590 1926-03-15 2424392 1925-08-29 198 SVO
-67   2424893 1927-01-12 2424699 1926-07-02 194 AAVSO
-66 7.4 2425204 1927-11-19 2425005 1927-05-04 199 SVO
-65 7.6 2425499 1928-09-09 2425312 1928-03-06 187 SVO
-64 7.8 2425810 1929-07-17 2425618 1929-01-06 192 SVO
-63 7.6 2426106 1930-05-09 2425925 1929-11-09 181 SVO
-62 7.1 2426401 1931-02-28 2426231 1930-09-11 170 SVO
-61   2426700 1931-12-24 2426538 1931-07-15 162 AAVSO
-60 7.6 2427004 1932-10-23 2426844 1932-05-16 160 SVO
-59 7.4 2427310 1933-08-25 2427151 1933-03-19 159 SVO
-58 7.7 2427621 1934-07-02 2427457 1934-01-19 164 SVO
-57 7.0 2427909 1935-04-16 2427764 1934-11-22 145 SVO
-56 7.8 2428225 1936-02-26 2428070 1935-09-24 155 AAVSO
-55   2428523 1936-12-20 2428377 1936-07-27 146 AAVSO
-54 7.5 2428824 1937-10-17 2428683 1937-05-29 141 AAVSO
-53 7.3 2429134 1938-08-23 2428990 1938-04-01 144 SVO
-52 7.9 2429439 1939-06-24 2429296 1939-02-01 143 SVO
-51 7.3 2429740 1940-04-20 2429603 1939-12-05 137 SVO
-50   2430042 1941-02-16 2429909 1940-10-06 133 AAVSO
-49   2430348 1941-12-19 2430216 1941-08-09 132 AAVSO
-48 8.0 2430656 1942-10-23 2430522 1942-06-11 134 AAVSO
-47 7.8 2430957 1943-08-20 2430829 1943-04-14 128 SVO
-46 7.1 2431255 1944-06-13 2431135 1944-02-14 120 SVO
-45   2431560 1945-04-14 2431442 1944-12-17 118 AAVSO
-44   2431878 1946-02-26 2431748 1945-10-19 130 AAVSO
-42   2432484 1947-10-25 2432361 1947-06-24 123 AAVSO
-41 7.0 2432775 1948-08-11 2432668 1948-04-26 107 SVO
-40 7.4 2433087 1949-06-19 2432974 1949-02-26 113 SVO
-39 7.6 2433397 1950-04-25 2433281 1949-12-30 116 SVO
-38 7.7 2433699 1951-02-21 2433587 1950-11-01 112 AAVSO
-37 7.1 2433995 1951-12-14 2433894 1951-09-04 101 SVO
-36 7.4 2434296 1952-10-10 2434200 1952-07-06 96 AAVSO
-35 7.9 2434606 1953-08-16 2434507 1953-05-09 99 SVO
-34 7.6 2434910 1954-06-16 2434813 1954-03-11 97 SVO
-33 7.3 2435209 1955-04-11 2435120 1955-01-12 89 SVO
-32 7.9 2435511 1956-02-07 2435426 1955-11-14 85 AAVSO
-31   2435811 1956-12-03 2435733 1956-09-16 78 AAVSO
-30 7.4 2436111 1957-09-29 2436039 1957-07-19 72 AAVSO
-29 7.6 2436407 1958-07-22 2436346 1958-05-22 61 SVO
-28 7.3 2436704 1959-05-15 2436652 1959-03-24 52 SVO
-27 7.9 2437016 1960-03-22 2436959 1960-01-25 57 SVO
-26   2437320 1961-01-20 2437265 1960-11-26 55 AAVSO
-25   2437618 1961-11-14 2437572 1961-09-29 46 AAVSO
-24 7.9 2437924 1962-09-16 2437878 1962-08-01 46 AAVSO
-23 7.4 2438227 1963-07-16 2438185 1963-06-04 42 SVO
-22 7.6 2438535 1964-05-19 2438491 1964-04-05 44 SVO
-21 7.3 2438830 1965-03-10 2438798 1965-02-06 32 SVO
-20 7.4 2439136 1966-01-10 2439104 1965-12-09 32 AAVSO
-19 7.7 2439436 1966-11-06 2439411 1966-10-12 25 SVO
-18 7.6 2439739 1967-09-05 2439717 1967-08-14 22 SVO
-17 7.3 2440039 1968-07-01 2440024 1968-06-16 15 SVO
-16 7.2 2440338 1969-04-26 2440330 1969-04-18 8 SVO
-15 7.8 2440642 1970-02-24 2440637 1970-02-19 5 AAVSO
-14 8.2 2440944 1970-12-23 2440943 1970-12-22 1 AAVSO
-13 8.0 2441255 1971-10-30 2441250 1971-10-25 5 SVO
-12 7.5 2441568 1972-09-07 2441556 1972-08-26 12 SVO
-11 7.6 2441870 1973-07-06 2441863 1973-06-29 7 SVO
-10 7.3 2442182 1974-05-14 2442169 1974-05-01 13 SVO
-9 7.6 2442482 1975-03-10 2442476 1975-03-04 6 AAVSO
-8 7.9 2442781 1976-01-03 2442782 1976-01-04 -1 AAVSO
-7 8.0 2443095 1976-11-12 2443089 1976-11-06 6 SVO
-6 8.2 2443407 1977-09-20 2443395 1977-09-08 12 SVO
-5 7.1 2443707 1978-07-17 2443702 1978-07-12 5 SVO
-4 7.7 2444012 1979-05-18 2444008 1979-05-14 4 SVO
-3 7.9 2444316 1980-03-17 2444315 1980-03-16 1 SVO
-2 7.4 2444614 1981-01-09 2444621 1981-01-16 -7 SVO
-1 8.2 2444919 1981-11-10 2444928 1981-11-19 -9 SVO
0 7.8 2445227 1982-09-14 2445234 1982-09-21 -7 AAVSO
1 7.8 2445542 1983-07-26 2445541 1983-07-25 1 SVO
2 7.5 2445837 1984-05-16 2445847 1984-05-26 -10 SVO
3 7.6 2446138 1985-03-13 2446154 1985-03-29 -16 SVO
4 7.4 2446438 1986-01-07 2446460 1986-01-29 -22 SVO
5 7.2 2446736 1986-11-01 2446767 1986-12-02 -31 SVO
6 7.1 2447036 1987-08-28 2447073 1987-10-04 -37 SVO
7 8.3 2447343 1988-06-30 2447380 1988-08-06 -37 SVO
8 7.8 2447647 1989-04-30 2447686 1989-06-08 -39 SVO
9 7.3 2447933 1990-02-10 2447993 1990-04-11 -60 SVO
10 8.2 2448250 1990-12-24 2448299 1991-02-11 -49 SVO
11 7.7 2448552 1991-10-22 2448606 1991-12-15 -54 SVO
12 7.1 2448843 1992-08-08 2448912 1992-10-16 -69 SVO
13 7.4 2449136 1993-05-28 2449219 1993-08-19 -83 SVO
14 7.6 2449438 1994-03-26 2449525 1994-06-21 -87 SVO
15 7.6 2449750 1995-02-01 2449832 1995-04-24 -82 SVO
16 7.8 2450053 1995-12-01 2450138 1996-02-24 -85 SVO
17 7.8 2450358 1996-10-01 2450445 1996-12-27 -87 SVO
18 7.7 2450664 1997-08-03 2450751 1997-10-29 -87 SVO
19 7.4 2450968 1998-06-03 2451058 1998-09-01 -90 SVO
20 7.3 2451269 1999-03-31 2451364 1999-07-04 -95 SVO
21   2451582 2000-02-07 2451671 2000-05-06 -89 AAVSO
22 8.0 2451883 2000-12-04 2451977 2001-03-08 -94 SVO
23 7.3 2452184 2001-10-01 2452284 2002-01-09 -100 SVO
24 7.8 2452495 2002-08-08 2452590 2002-11-11 -95 SVO
25 8.0 2452805 2003-06-14 2452897 2003-09-14 -92 SVO
26 7.1 2453104 2004-04-08 2453203 2004-07-16 -99 SVO
27 7.8 2453411 2005-02-09 2453510 2005-05-19 -99 SVO
28 7.3 2453715 2005-12-10 2453816 2006-03-21 -101 SVO
29 7.9 2454026 2006-10-17 2454123 2007-01-22 -97 SVO
30 7.9 2454333 2007-08-20 2454429 2007-11-24 -96 SVO
31 7.3 2454636 2008-06-18 2454736 2008-09-26 -100 SVO
32 7.6 2454939 2009-04-17 2455042 2009-07-29 -103 SVO
33 8.1 2455248 2010-02-20 2455349 2010-06-01 -101 SVO
34   2455557 2010-12-26 2455655 2011-04-03 -98 AAVSO
35 7.2 2455846 2011-10-11 2455962 2012-02-04 -116 SVO
36 8.2 2456154 2012-08-14 2456268 2012-12-06 -114 SVO
37 7.8 2456469 2013-06-25 2456575 2013-10-09 -106 SVO
38 7.8 2456768 2014-04-20 2456881 2014-08-11 -113 SVO
39 8.3 2457063 2015-02-09 2457188 2015-06-14 -125 AAVSO
40 7.6 2457353 2015-11-26 2457494 2016-04-15 -141 SVO
41 8.0 2457660 2016-09-28 2457801 2017-02-16 -141 SVO
42 7.4 2457960 2017-07-25 2458107 2017-12-19 -147 SVO
43 8.3 2458270 2018-05-31 2458414 2018-10-22 -144 SVO
44 8.0 2458568 2019-03-25 2458720 2019-08-24 -152 SVO
45   2458870 2020-01-21 2459027 2020-06-26 -157 SVO
46 8.5 2459173 2020-11-19 2459333 2021-04-28 -160 SVO
47 7.5 2459470 2021-09-12 2459640 2022-03-01 -170 SVO
48 7.7 2459769 2022-07-08 2459946 2023-01-01 -177 SVO
49 7.3 2460065 2023-04-30 2460253 2023-11-04 -188 SVO
50   2460370 2024-02-29 2460559 2024-09-05 -189 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.