# IBVS 5514-t1.txt #Object: W Crv #IBVSdataKey: minima/maxima times # W Corvi Linear Ephemeris HJD(min I) = (24)39647.76139 + 0.388081342 E Quadratic Ephemeris HJD(min I) = (24)39647.76524 + 0.388080791 E + 0.141415E-10 E*E Timings used in the fits: No. Cycle (E) HJD (O) Residual HJD (C) Year Notes Reference 1 .0 39647.7627 1.9 39647.7614 1967 Dycus PASP 80, 207 1968 2 2.5 39648.7357 5.9 39648.7316 1967 " 3 3736.0 41097.6386 7.7 41097.6333 1971 Ave of 4-1 JAAVSO 5,1,1976 4 6493.0 42167.5717 -2.7 42167.5735 1974 Ave of 2 JAAVSO 6,1,1977 5 7374.5 42509.6667 -0.8 42509.6672 1975 Ave of 5 JAAVSO 7,1,1978 6 8238.0 42844.7743 -1.7 42844.7755 1976 Ave of 9 AAVSO #1 1993 7 9065.5 43165.9125 -0.4 43165.9128 1977 Ave of 4 AAVSO #1 1993 8 10253.0 43626.7592 -0.3 43626.7594 1978 Ave of 6 AAVSO #1 1993 9 11165.0 43980.6917 3.1 43980.6896 1979 Ave of 3 AAVSO #1 1993 10 13025.5 44702.7170 3.0 44702.7149 1981 Ave of 3 AAVSO #1 1993 11 13031.0 44704.8490 -0.5 44704.8494 1981 Odell etal IBVS 2453 1983 12 13067.0 44718.8215 1.8 44718.8203 1981 " 13 13992.0 45077.7951 -0.6 45077.7955 1982 " 14 15847.0 45797.6860 -0.6 45797.6864 1984 Ave of 4 AAVSO #1 1993 15 16818.5 46174.7070 -0.6 46174.7074 1985 Ave of 5 AAVSO #1 1993 16 17718.0 46523.7850 -2.3 46523.7866 1986 Ave of 3 AAVSO #1 1993 17 18715.0 46910.7020 -2.4 46910.7037 1987 Ave of 6 AAVSO #1 1993 18 19550.0 47234.7467 -7.1 47234.7516 1988 Odell MNRAS 282, 373 1996 19 19558.0 47237.8561 -0.2 47237.8563 " 20 19591.5 47250.8553 -2.4 47250.8570 " 21 19637.5 47268.7090 0.4 47268.7087 1988 Ave of 2 AAVSO #1 1993 22 21523.5 48000.6260 -6.0 48000.6301 1990 One visual AAVSO #1 1993 23 22443.5 48357.6650 0.0 48357.6650 1991 One visual AAVSO #1 1993 24 23446.0 48746.7130 -5.1 48746.7165 1992 Ave of 4 AAVSO #1, #4 25 24371.0 49105.6910 -1.1 49105.6918 1993 Ave of 4 AAVSO #4 1997 26 24379.0 49108.7921 -6.2 49108.7964 1993 corrected Odell MNRAS 282, 373 1996 27 24381.5 49109.7626 -5.8 49109.7666 " " 28 25260.0 49450.6930 -4.4 49450.6961 1994 Ave of 6 AAVSO #4 1997 29 26164.5 49801.7140 -2.4 49801.7157 1995 Ave of 10 AAVSO #4 1997 30 27146.0 50182.6170 -0.7 50182.6175 1996 Ave of 9 AAVSO #4 1997 31 28066.0 50539.6520 -0.5 50539.6523 1997 Ave of 5 AAVSO #4 1997 32 29050.5 50921.7200 2.3 50921.7184 1998 Ave of 4 AAVSO #7, 2002 33 30040.0 51305.7230 -2.7 51305.7249 1999 Odell (this paper) 34 30042.5 51306.6938 -1.9 51306.6951 " 35 30045.0 51307.6639 -2.0 51307.6653 " 36 30047.5 51308.6390 5.0 51308.6355 1999 Ave of 2 AAVSO #7, 2002 37 30738.0 51576.6059 0.3 51576.6057 2000 Zejda CCD IBVS 5287, 2002 38 30911.0 51643.7470 4.7 51643.7437 2000 Ave of 5 AAVSO #7, 2002 39 30965.0 51664.7016 2.1 51664.7001 2000 Dvorak CCD AAVSO #7, 2002 40 30965.0 51664.7021 2.8 51664.7001 2000 Hesseltine CCD AAVSO #7, 2002 41 31795.0 51986.8087 1.5 51986.8076 2001 Samolyk CCD AAVSO #7, 2002 42 31882.0 52020.5717 1.4 52020.5707 2001 Dvorak CCD AAVSO #7, 2002 43 31944.0 52044.6323 0.8 52044.6318 2001 Howell CCD AAVSO #7, 2002 44 31903.0 52028.7212 1.1 52028.7204 2001 Odell (this paper) 45 31905.5 52029.6929 3.3 52029.6906 " 46 31908.0 52030.6619 1.5 52030.6608 " 47 32656.0 52320.9456 -0.1 52320.9457 2001 Odell (this paper) 48 32668.5 52325.7983 2.3 52325.7967 " 49 32669.0 52325.9901 -0.9 52325.9907 " 50 32748.0 52356.6490 -0.2 52356.6492 2002 Dvorak CCD AAVSO #7, 2002 51 33637.5 52701.8486 1.6 52701.8475 2003 Odell, Cushing (this paper) 52 33643.5 52704.1768 1.1 52704.1760 2003 Tasmania (this paper) 53 33645.0 52704.7598 2.4 52704.7581 2003 Odell, Cushing (this paper) 54 33645.5 52704.9538 2.3 52704.9522 2003 " 55 33648.0 52705.9240 2.3 52705.9224 2003 " RMS RESIDUAL = .4006 minutes FIT FOR UNUSED DATA: 1 -30371.0 27861.3610 26.0 27861.3430 1935 made by Lange Tsesevich Odessa Izv 4, 231 1954 2 -21819.0 31180.2328 26.2 31180.2146 1944 Orig = .231 " 3 -21818.5 31180.4299 30.6 31180.4086 1944 Orig = .453 " 4 -20835.0 31562.1060 27.9 31562.0866 1945 " 5 -20834.5 31562.3050 35.0 31562.2807 1945 " 6 -18909.0 32309.5480 24.0 32309.5313 1947 Soloviev A. Iz 68, 9, 1947 7 -18908.5 32309.7420 24.0 32309.7253 1947 " 8 11936.0 44279.8940 -9.0 44279.9003 1980 One visual AAVSO #1 1993 9 14986.5 45463.7479 7.9 45463.7424 1983 Ave of 2 AAVSO #1 1993 10 20606.5 47644.7501 -13.6 47644.7596 1989 Ave of 2 AAVSO #1 1993 11 27938.0 50489.9781 0.3 50489.9779 1997 Spectroscopic Ruchinski and Lu MNRAS 315, 587, 2000