Maxima for R Del
Period: 285.07, Epoch: 2444091
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-148   2401877 1864-01-06 2401901 1864-01-30 -24 AnHar, 1937, vol 105, p 459
-146 8.7 2402475 1865-08-26 2402471 1865-08-22 4 SVO
-145 8.1 2402752 1866-05-30 2402756 1866-06-03 -4 SVO
-143   2403325 1867-12-24 2403326 1867-12-25 -1 MNRAS, 1914, vol 74, p 568
-142   2403608 1868-10-02 2403611 1868-10-05 -3 VeBam, 1931, vol 3, p 1
-141 8.1 2403897 1869-07-18 2403896 1869-07-17 1 SVO
-140   2404189 1870-05-06 2404181 1870-04-28 8 VeBam, 1931, vol 3, p 1
-139   2404461 1871-02-02 2404466 1871-02-07 -5 VeBam, 1931, vol 3, p 1
-138   2404753 1871-11-21 2404751 1871-11-19 2 AnHar, 1909, vol 55, p 95, VeBam, 1931, vol 3, p 1
-137 7.8 2405031 1872-08-25 2405036 1872-08-30 -5 SVO
-132   2406462 1876-07-26 2406462 1876-07-26 0 GuL, 1920, 1.2
-131   2406750 1877-05-10 2406747 1877-05-07 3 GuL, 1920, 1.2
-129   2407324 1878-12-05 2407317 1878-11-28 7 GuL, 1920, 1.2, MNRAS, 1914, vol 74, p 568
-128   2407615 1879-09-22 2407602 1879-09-09 13 MNRAS, 1914, vol 74, p 568, GuL, 1920, 1.2
-127   2407892 1880-06-25 2407887 1880-06-20 5 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-126   2408193 1881-04-22 2408172 1881-04-01 21 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-125   2408478 1882-02-01 2408457 1882-01-11 21 GuL, 1920, 1.2
-123   2409054 1883-08-31 2409027 1883-08-04 27 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-122   2409323 1884-05-26 2409312 1884-05-15 11 GuL, 1920, 1.2
-119   2410191 1886-10-11 2410168 1886-09-18 23 GuL, 1920, 1.2
-118   2410474 1887-07-21 2410453 1887-06-30 21 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-114   2411617 1890-09-06 2411593 1890-08-13 24 GuL, 1920, 1.2
-110   2412741 1893-10-04 2412733 1893-09-26 8 AnHar, 1909, vol 55, p 95
-109   2413030 1894-07-20 2413018 1894-07-08 12 AnHar, 1909, vol 55, p 95
-106   2413858 1896-10-25 2413874 1896-11-10 -16 AnHar, 1909, vol 55, p 95
-105   2414147 1897-08-10 2414159 1897-08-22 -12 AnHar, 1909, vol 55, p 95
-104   2414460 1898-06-19 2414444 1898-06-03 16 AnHar, 1909, vol 55, p 95
-101   2415268 1900-09-05 2415299 1900-10-06 -31 GuL, 1920, 1.2, AnHar, 1909, vol 55, p 95
-100   2415530 1901-05-25 2415584 1901-07-18 -54 SVO
-99   2415820 1902-03-11 2415869 1902-04-29 -49 SVO
-98   2416113 1902-12-29 2416154 1903-02-08 -41 AnHar, 1909, vol 55, p 95
-97   2416414 1903-10-26 2416439 1903-11-20 -25 AnHar, 1909, vol 55, p 95
-96   2416679 1904-07-17 2416724 1904-08-31 -45 AnHar, 1909, vol 55, p 95
-95   2416965 1905-04-29 2417009 1905-06-12 -44 SVO
-94   2417249 1906-02-07 2417294 1906-03-24 -45 AAVSO
-93 8.4 2417528 1906-11-13 2417579 1907-01-03 -51 AAVSO
-92 8.2 2417802 1907-08-14 2417865 1907-10-16 -63 SVO
-91   2418085 1908-05-23 2418150 1908-07-27 -65 SVO
-90   2418373 1909-03-07 2418435 1909-05-08 -62 AAVSO
-89   2418655 1909-12-14 2418720 1910-02-17 -65 SVO
-88 8.7 2418946 1910-10-01 2419005 1910-11-29 -59 SVO
-87 8.1 2419229 1911-07-11 2419290 1911-09-10 -61 SVO
-86   2419520 1912-04-27 2419575 1912-06-21 -55 SVO
-85 8.4 2419822 1913-02-23 2419860 1913-04-02 -38 AAVSO
-84 8.4 2420090 1913-11-18 2420145 1914-01-12 -55 AAVSO
-83 8.4 2420385 1914-09-09 2420430 1914-10-24 -45 SVO
-82   2420664 1915-06-15 2420715 1915-08-05 -51 SVO
-81   2420956 1916-04-02 2421000 1916-05-16 -44 AAVSO
-80   2421248 1917-01-19 2421285 1917-02-25 -37 AAVSO
-79 8.3 2421529 1917-10-27 2421570 1917-12-07 -41 SVO
-78 8.7 2421818 1918-08-12 2421856 1918-09-19 -38 SVO
-77 8.2 2422109 1919-05-30 2422141 1919-07-01 -32 AAVSO
-76 8.5 2422394 1920-03-10 2422426 1920-04-11 -32 AAVSO
-75 8.6 2422673 1920-12-14 2422711 1921-01-21 -38 AAVSO
-74 8.8 2422958 1921-09-25 2422996 1921-11-02 -38 SVO
-73 7.9 2423235 1922-06-29 2423281 1922-08-14 -46 SVO
-72 8.6 2423523 1923-04-13 2423566 1923-05-26 -43 AAVSO
-71 8.0 2423801 1924-01-16 2423851 1924-03-06 -50 SVO
-70 8.8 2424089 1924-10-30 2424136 1924-12-16 -47 SVO
-69 8.9 2424377 1925-08-14 2424421 1925-09-27 -44 SVO
-68 7.9 2424650 1926-05-14 2424706 1926-07-09 -56 SVO
-67 8.2 2424940 1927-02-28 2424991 1927-04-20 -51 SVO
-66 8.3 2425225 1927-12-10 2425276 1928-01-30 -51 SVO
-65 8.1 2425508 1928-09-18 2425561 1928-11-10 -53 SVO
-64 8.0 2425790 1929-06-27 2425847 1929-08-23 -57 SVO
-63 8.2 2426075 1930-04-08 2426132 1930-06-04 -57 AAVSO
-62 8.1 2426361 1931-01-19 2426417 1931-03-16 -56 SVO
-61 8.6 2426650 1931-11-04 2426702 1931-12-26 -52 SVO
-60 8.6 2426937 1932-08-17 2426987 1932-10-06 -50 SVO
-59 8.5 2427222 1933-05-29 2427272 1933-07-18 -50 SVO
-58 8.4 2427504 1934-03-07 2427557 1934-04-29 -53 AAVSO
-57 8.2 2427781 1934-12-09 2427842 1935-02-08 -61 SVO
-56 8.1 2428065 1935-09-19 2428127 1935-11-20 -62 SVO
-55 8.3 2428351 1936-07-01 2428412 1936-08-31 -61 SVO
-54 8.6 2428648 1937-04-24 2428697 1937-06-12 -49 SVO
-53   2428945 1938-02-15 2428982 1938-03-24 -37 AAVSO
-52 7.7 2429218 1938-11-15 2429267 1939-01-03 -49 SVO
-51 8.7 2429505 1939-08-29 2429552 1939-10-15 -47 SVO
-50   2429787 1940-06-06 2429838 1940-07-27 -51 SVO
-49   2430067 1941-03-13 2430123 1941-05-08 -56 AAVSO
-48 8.0 2430354 1941-12-25 2430408 1942-02-17 -54 SVO
-47 8.6 2430642 1942-10-09 2430693 1942-11-29 -51 SVO
-46 8.8 2430933 1943-07-27 2430978 1943-09-10 -45 SVO
-45   2431217 1944-05-06 2431263 1944-06-21 -46 SVO
-44   2431514 1945-02-27 2431548 1945-04-02 -34 AAVSO
-43 8.3 2431780 1945-11-20 2431833 1946-01-12 -53 SVO
-42 8.5 2432075 1946-09-11 2432118 1946-10-24 -43 SVO
-41 8.3 2432358 1947-06-21 2432403 1947-08-05 -45 SVO
-40   2432640 1948-03-29 2432688 1948-05-16 -48 SVO
-39 8.2 2432920 1949-01-03 2432973 1949-02-25 -53 AAVSO
-38 8.0 2433197 1949-10-07 2433258 1949-12-07 -61 SVO
-37 8.6 2433491 1950-07-28 2433543 1950-09-18 -52 SVO
-36 8.5 2433774 1951-05-07 2433828 1951-06-30 -54 AAVSO
-35 8.4 2434058 1952-02-15 2434114 1952-04-11 -56 SVO
-34 7.9 2434343 1952-11-26 2434399 1953-01-21 -56 SVO
-33 9.4 2434636 1953-09-15 2434684 1953-11-02 -48 SVO
-32 8.8 2434913 1954-06-19 2434969 1954-08-14 -56 AAVSO
-31   2435196 1955-03-29 2435254 1955-05-26 -58 AAVSO
-30 8.7 2435484 1956-01-11 2435539 1956-03-06 -55 AAVSO
-29 8.4 2435774 1956-10-27 2435824 1956-12-16 -50 SVO
-28 7.8 2436060 1957-08-09 2436109 1957-09-27 -49 SVO
-27 8.2 2436337 1958-05-13 2436394 1958-07-09 -57 AAVSO
-26   2436629 1959-03-01 2436679 1959-04-20 -50 AAVSO
-25 9.0 2436932 1959-12-29 2436964 1960-01-30 -32 AAVSO
-24 8.5 2437224 1960-10-16 2437249 1960-11-10 -25 SVO
-23 8.5 2437495 1961-07-14 2437534 1961-08-22 -39 SVO
-22 8.6 2437785 1962-04-30 2437819 1962-06-03 -34 AAVSO
-21   2438083 1963-02-22 2438105 1963-03-16 -22 AAVSO
-20 9.3 2438371 1963-12-07 2438390 1963-12-26 -19 AAVSO
-19 8.3 2438652 1964-09-13 2438675 1964-10-06 -23 SVO
-18 8.4 2438929 1965-06-17 2438960 1965-07-18 -31 SVO
-17 8.3 2439216 1966-03-31 2439245 1966-04-29 -29 AAVSO
-16 8.4 2439497 1967-01-06 2439530 1967-02-08 -33 AAVSO
-15 8.0 2439776 1967-10-12 2439815 1967-11-20 -39 SVO
-14 8.7 2440064 1968-07-26 2440100 1968-08-31 -36 SVO
-13 8.2 2440347 1969-05-05 2440385 1969-06-12 -38 SVO
-12 8.3 2440640 1970-02-22 2440670 1970-03-24 -30 SVO
-11 8.7 2440934 1970-12-13 2440955 1971-01-03 -21 SVO
-10 8.3 2441219 1971-09-24 2441240 1971-10-15 -21 SVO
-9 8.3 2441505 1972-07-06 2441525 1972-07-26 -20 SVO
-8 8.2 2441787 1973-04-14 2441810 1973-05-07 -23 AAVSO
-7 8.2 2442075 1974-01-27 2442096 1974-02-17 -21 SVO
-6 7.9 2442364 1974-11-12 2442381 1974-11-29 -17 SVO
-5 8.6 2442664 1975-09-08 2442666 1975-09-10 -2 SVO
-4 9.4 2442951 1976-06-21 2442951 1976-06-21 0 SVO
-3 8.7 2443232 1977-03-29 2443236 1977-04-02 -4 AAVSO
-2 8.4 2443519 1978-01-10 2443521 1978-01-12 -2 SVO
-1 8.5 2443805 1978-10-23 2443806 1978-10-24 -1 SVO
0 8.2 2444086 1979-07-31 2444091 1979-08-05 -5 SVO
1 8.1 2444364 1980-05-04 2444376 1980-05-16 -12 SVO
2 8.7 2444652 1981-02-16 2444661 1981-02-25 -9 SVO
3 8.0 2444946 1981-12-07 2444946 1981-12-07 0 SVO
4 9.0 2445234 1982-09-21 2445231 1982-09-18 3 SVO
5 8.2 2445519 1983-07-03 2445516 1983-06-30 3 SVO
6 8.3 2445811 1984-04-20 2445801 1984-04-10 10 SVO
7 8.2 2446087 1985-01-21 2446086 1985-01-20 1 SVO
8 8.1 2446376 1985-11-06 2446372 1985-11-02 4 SVO
9 8.5 2446669 1986-08-26 2446657 1986-08-14 12 SVO
10 8.7 2446958 1987-06-11 2446942 1987-05-26 16 SVO
11 8.0 2447240 1988-03-19 2447227 1988-03-06 13 SVO
12 8.6 2447531 1989-01-04 2447512 1988-12-16 19 SVO
13 8.0 2447814 1989-10-14 2447797 1989-09-27 17 SVO
14 9.0 2448103 1990-07-30 2448082 1990-07-09 21 SVO
15 8.6 2448393 1991-05-16 2448367 1991-04-20 26 SVO
16 8.1 2448666 1992-02-13 2448652 1992-01-30 14 SVO
17 8.6 2448966 1992-12-09 2448937 1992-11-10 29 SVO
18 8.2 2449245 1993-09-14 2449222 1993-08-22 23 SVO
19 8.4 2449531 1994-06-27 2449507 1994-06-03 24 SVO
20 8.7 2449821 1995-04-13 2449792 1995-03-15 29 SVO
21 8.6 2450105 1996-01-22 2450077 1995-12-25 28 SVO
22 7.9 2450377 1996-10-20 2450363 1996-10-06 14 SVO
23 8.4 2450666 1997-08-05 2450648 1997-07-18 18 SVO
24 8.1 2450954 1998-05-20 2450933 1998-04-29 21 SVO
25 8.2 2451235 1999-02-25 2451218 1999-02-08 17 SVO
26 8.0 2451513 1999-11-30 2451503 1999-11-20 10 SVO
27 8.7 2451804 2000-09-16 2451788 2000-08-31 16 SVO
28 8.5 2452090 2001-06-29 2452073 2001-06-12 17 SVO
29 8.6 2452372 2002-04-07 2452358 2002-03-24 14 SVO
30 8.2 2452653 2003-01-13 2452643 2003-01-03 10 SVO
31 8.5 2452933 2003-10-20 2452928 2003-10-15 5 SVO
32 8.2 2453213 2004-07-26 2453213 2004-07-26 0 SVO
33 8.0 2453493 2005-05-02 2453498 2005-05-07 -5 SVO
34 8.4 2453780 2006-02-13 2453783 2006-02-16 -3 SVO
35 8.4 2454069 2006-11-29 2454068 2006-11-28 1 SVO
36 8.2 2454342 2007-08-29 2454354 2007-09-10 -12 SVO
37 8.2 2454624 2008-06-06 2454639 2008-06-21 -15 SVO
38 8.4 2454911 2009-03-20 2454924 2009-04-02 -13 SVO
39 8.3 2455197 2009-12-31 2455209 2010-01-12 -12 SVO
40 9.0 2455492 2010-10-22 2455494 2010-10-24 -2 SVO
41 8.3 2455778 2011-08-04 2455779 2011-08-05 -1 SVO
42 8.6 2456062 2012-05-14 2456064 2012-05-16 -2 SVO
43 8.6 2456347 2013-02-23 2456349 2013-02-25 -2 SVO
44 8.0 2456631 2013-12-04 2456634 2013-12-07 -3 SVO
45 8.3 2456917 2014-09-16 2456919 2014-09-18 -2 SVO
46 8.3 2457203 2015-06-29 2457204 2015-06-30 -1 SVO
47 8.6 2457500 2016-04-21 2457489 2016-04-10 11 SVO
48 8.8 2457790 2017-02-05 2457774 2017-01-20 16 SVO
49 7.9 2458065 2017-11-07 2458059 2017-11-01 6 SVO
50 8.3 2458354 2018-08-23 2458345 2018-08-14 9 SVO
51 8.3 2458637 2019-06-02 2458630 2019-05-26 7 SVO
52 8.6 2458927 2020-03-18 2458915 2020-03-06 12 SVO
53 8.2 2459214 2020-12-30 2459200 2020-12-16 14 SVO
54 8.3 2459497 2021-10-09 2459485 2021-09-27 12 SVO
55 7.9 2459775 2022-07-14 2459770 2022-07-09 5 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.