Grazing Occultation of 730WA7 Magnitude 5.1 [Red = 5.0] v R730 = 97 Tauri (V480) Date: 2019 Sep 20 22h 43m, to 2019 Sep 20 23h 9m Nominal site altitude 100m E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA o ' " o ' " h m s Alt Alt Az o o o 15 0 0 60 32 1.9 22 42 46 22 91 2.45 164.3 169.65 -9.83S 15 7 30 60 36 52.7 22 42 56 22 91 2.44 164.3 169.65 -9.83S 15 15 0 60 41 43.5 22 43 5 22 91 2.43 164.3 169.66 -9.82S 15 22 30 60 46 34.2 22 43 15 22 91 2.42 164.3 169.66 -9.82S 15 30 0 60 51 25.0 22 43 25 23 91 2.41 164.3 169.67 -9.81S 15 37 30 60 56 15.7 22 43 35 23 92 2.40 164.3 169.67 -9.81S 15 45 0 61 1 6.4 22 43 45 23 92 2.39 164.4 169.68 -9.80S 15 52 30 61 5 57.1 22 43 55 23 92 2.38 164.4 169.68 -9.80S 16 0 0 61 10 47.7 22 44 5 23 92 2.37 164.4 169.69 -9.79S 16 7 30 61 15 38.3 22 44 15 23 92 2.36 164.4 169.69 -9.79S 16 15 0 61 20 28.7 22 44 25 23 93 2.35 164.4 169.70 -9.78S 16 22 30 61 25 19.1 22 44 35 23 93 2.35 164.4 169.70 -9.78S 16 30 0 61 30 9.4 22 44 45 23 93 2.34 164.4 169.71 -9.77S 16 37 30 61 34 59.6 22 44 55 23 93 2.33 164.4 169.71 -9.77S 16 45 0 61 39 49.7 22 45 5 23 93 2.32 164.4 169.72 -9.76S 16 52 30 61 44 39.6 22 45 15 23 93 2.31 164.4 169.72 -9.75S 17 0 0 61 49 29.4 22 45 26 23 94 2.30 164.4 169.73 -9.75S 17 7 30 61 54 19.0 22 45 36 24 94 2.30 164.4 169.74 -9.74S 17 15 0 61 59 8.5 22 45 46 24 94 2.29 164.4 169.74 -9.74S 17 22 30 62 3 57.8 22 45 56 24 94 2.28 164.4 169.75 -9.73S 17 30 0 62 8 47.0 22 46 6 24 94 2.27 164.4 169.75 -9.73S 17 37 30 62 13 35.9 22 46 17 24 95 2.26 164.4 169.76 -9.72S 17 45 0 62 18 24.7 22 46 27 24 95 2.26 164.4 169.77 -9.71S 17 52 30 62 23 13.2 22 46 37 24 95 2.25 164.4 169.77 -9.71S 18 0 0 62 28 1.5 22 46 47 24 95 2.24 164.5 169.78 -9.70S 18 7 30 62 32 49.6 22 46 58 24 95 2.23 164.5 169.78 -9.69S 18 15 0 62 37 37.4 22 47 8 24 96 2.23 164.5 169.79 -9.69S 18 22 30 62 42 25.0 22 47 18 24 96 2.22 164.5 169.80 -9.68S 18 30 0 62 47 12.3 22 47 29 24 96 2.21 164.5 169.80 -9.67S 18 37 30 62 51 59.3 22 47 39 24 96 2.21 164.5 169.81 -9.67S 18 45 0 62 56 46.1 22 47 49 24 96 2.20 164.5 169.82 -9.66S 18 52 30 63 1 32.6 22 48 0 25 96 2.19 164.5 169.83 -9.65S 19 0 0 63 6 18.7 22 48 10 25 97 2.18 164.5 169.83 -9.65S 19 7 30 63 11 4.5 22 48 21 25 97 2.18 164.5 169.84 -9.64S 19 15 0 63 15 50.0 22 48 31 25 97 2.17 164.5 169.85 -9.63S 19 22 30 63 20 35.1 22 48 41 25 97 2.17 164.5 169.85 -9.63S 19 30 0 63 25 20.0 22 48 52 25 97 2.16 164.5 169.86 -9.62S 19 37 30 63 30 4.4 22 49 2 25 98 2.15 164.5 169.87 -9.61S 19 45 0 63 34 48.5 22 49 13 25 98 2.15 164.6 169.88 -9.60S 19 52 30 63 39 32.2 22 49 23 25 98 2.14 164.6 169.88 -9.60S 20 0 0 63 44 15.6 22 49 34 25 98 2.13 164.6 169.89 -9.59S 20 7 30 63 48 58.5 22 49 44 25 98 2.13 164.6 169.90 -9.58S 20 15 0 63 53 41.0 22 49 54 25 99 2.12 164.6 169.91 -9.57S 20 22 30 63 58 23.2 22 50 5 25 99 2.12 164.6 169.91 -9.56S 20 30 0 64 3 4.9 22 50 15 25 99 2.11 164.6 169.92 -9.56S 20 37 30 64 7 46.1 22 50 26 25 99 2.10 164.6 169.93 -9.55S 20 45 0 64 12 27.0 22 50 36 25 99 2.10 164.6 169.94 -9.54S 20 52 30 64 17 7.3 22 50 47 26 100 2.09 164.6 169.95 -9.53S 21 0 0 64 21 47.3 22 50 57 26 100 2.09 164.6 169.95 -9.53S 21 7 30 64 26 26.7 22 51 8 26 100 2.08 164.6 169.96 -9.52S 21 15 0 64 31 5.7 22 51 18 26 100 2.08 164.6 169.97 -9.51S 21 22 30 64 35 44.2 22 51 29 26 100 2.07 164.7 169.98 -9.50S 21 30 0 64 40 22.2 22 51 39 26 101 2.07 164.7 169.99 -9.49S 21 37 30 64 44 59.7 22 51 50 26 101 2.06 164.7 169.99 -9.48S 21 45 0 64 49 36.6 22 52 0 26 101 2.06 164.7 170.00 -9.48S 21 52 30 64 54 13.1 22 52 11 26 101 2.05 164.7 170.01 -9.47S 22 0 0 64 58 49.0 22 52 21 26 101 2.05 164.7 170.02 -9.46S 22 7 30 65 3 24.4 22 52 32 26 101 2.04 164.7 170.03 -9.45S 22 15 0 65 7 59.2 22 52 42 26 102 2.04 164.7 170.04 -9.44S 22 22 30 65 12 33.4 22 52 53 26 102 2.03 164.7 170.05 -9.43S 22 30 0 65 17 7.1 22 53 3 26 102 2.03 164.7 170.06 -9.42S 22 37 30 65 21 40.2 22 53 13 26 102 2.02 164.7 170.06 -9.41S 22 45 0 65 26 12.7 22 53 24 26 102 2.02 164.7 170.07 -9.41S 22 52 30 65 30 44.7 22 53 34 26 103 2.01 164.8 170.08 -9.40S 23 0 0 65 35 16.0 22 53 45 26 103 2.01 164.8 170.09 -9.39S 23 7 30 65 39 46.8 22 53 55 27 103 2.00 164.8 170.10 -9.38S 23 15 0 65 44 16.9 22 54 6 27 103 2.00 164.8 170.11 -9.37S 23 22 30 65 48 46.4 22 54 16 27 103 1.99 164.8 170.12 -9.36S 23 30 0 65 53 15.2 22 54 26 27 104 1.99 164.8 170.13 -9.35S 23 37 30 65 57 43.5 22 54 37 27 104 1.99 164.8 170.14 -9.34S 23 45 0 66 2 11.0 22 54 47 27 104 1.98 164.8 170.15 -9.33S 23 52 30 66 6 38.0 22 54 58 27 104 1.98 164.8 170.15 -9.32S 24 0 0 66 11 4.2 22 55 8 27 104 1.97 164.8 170.16 -9.31S 24 7 30 66 15 29.8 22 55 18 27 105 1.97 164.9 170.17 -9.30S 24 15 0 66 19 54.8 22 55 29 27 105 1.96 164.9 170.18 -9.30S 24 22 30 66 24 19.0 22 55 39 27 105 1.96 164.9 170.19 -9.29S 24 30 0 66 28 42.6 22 55 49 27 105 1.96 164.9 170.20 -9.28S 24 37 30 66 33 5.5 22 56 0 27 105 1.95 164.9 170.21 -9.27S 24 45 0 66 37 27.7 22 56 10 27 106 1.95 164.9 170.22 -9.26S 24 52 30 66 41 49.1 22 56 20 27 106 1.95 164.9 170.23 -9.25S 25 0 0 66 46 9.9 22 56 30 27 106 1.94 164.9 170.24 -9.24S 25 7 30 66 50 29.9 22 56 41 27 106 1.94 164.9 170.25 -9.23S 25 15 0 66 54 49.3 22 56 51 27 106 1.93 164.9 170.26 -9.22S 25 22 30 66 59 7.9 22 57 1 27 107 1.93 164.9 170.27 -9.21S 25 30 0 67 3 25.7 22 57 11 27 107 1.93 165.0 170.28 -9.20S 25 37 30 67 7 42.9 22 57 22 27 107 1.92 165.0 170.29 -9.19S 25 45 0 67 11 59.2 22 57 32 27 107 1.92 165.0 170.30 -9.18S 25 52 30 67 16 14.9 22 57 42 28 107 1.92 165.0 170.31 -9.17S 26 0 0 67 20 29.8 22 57 52 28 108 1.91 165.0 170.32 -9.16S 26 7 30 67 24 43.9 22 58 2 28 108 1.91 165.0 170.33 -9.15S 26 15 0 67 28 57.2 22 58 12 28 108 1.91 165.0 170.34 -9.14S 26 22 30 67 33 9.8 22 58 22 28 108 1.90 165.0 170.35 -9.13S 26 30 0 67 37 21.6 22 58 32 28 108 1.90 165.0 170.36 -9.12S 26 37 30 67 41 32.7 22 58 42 28 109 1.90 165.0 170.37 -9.11S 26 45 0 67 45 42.9 22 58 52 28 109 1.90 165.1 170.38 -9.10S 26 52 30 67 49 52.3 22 59 2 28 109 1.89 165.1 170.39 -9.09S 27 0 0 67 54 1.0 22 59 12 28 109 1.89 165.1 170.40 -9.08S 27 7 30 67 58 8.8 22 59 22 28 109 1.89 165.1 170.41 -9.07S 27 15 0 68 2 15.9 22 59 32 28 110 1.88 165.1 170.42 -9.06S 27 22 30 68 6 22.1 22 59 42 28 110 1.88 165.1 170.43 -9.05S 27 30 0 68 10 27.5 22 59 52 28 110 1.88 165.1 170.44 -9.04S 27 37 30 68 14 32.1 23 0 2 28 110 1.88 165.1 170.45 -9.03S 27 45 0 68 18 35.9 23 0 12 28 110 1.87 165.1 170.46 -9.02S 27 52 30 68 22 38.9 23 0 22 28 111 1.87 165.1 170.47 -9.01S 28 0 0 68 26 41.0 23 0 32 28 111 1.87 165.2 170.48 -9.00S 28 7 30 68 30 42.3 23 0 41 28 111 1.86 165.2 170.49 -8.99S 28 15 0 68 34 42.8 23 0 51 28 111 1.86 165.2 170.50 -8.98S 28 22 30 68 38 42.5 23 1 1 28 111 1.86 165.2 170.51 -8.97S 28 30 0 68 42 41.3 23 1 11 28 112 1.86 165.2 170.52 -8.96S 28 37 30 68 46 39.3 23 1 20 28 112 1.85 165.2 170.53 -8.95S 28 45 0 68 50 36.4 23 1 30 28 112 1.85 165.2 170.54 -8.94S 28 52 30 68 54 32.7 23 1 40 28 112 1.85 165.2 170.55 -8.92S 29 0 0 68 58 28.1 23 1 49 28 112 1.85 165.2 170.56 -8.91S 29 7 30 69 2 22.7 23 1 59 28 113 1.85 165.3 170.57 -8.90S 29 15 0 69 6 16.4 23 2 9 28 113 1.84 165.3 170.59 -8.89S 29 22 30 69 10 9.3 23 2 18 29 113 1.84 165.3 170.60 -8.88S 29 30 0 69 14 1.3 23 2 28 29 113 1.84 165.3 170.61 -8.87S 29 37 30 69 17 52.5 23 2 37 29 113 1.84 165.3 170.62 -8.86S 29 45 0 69 21 42.8 23 2 47 29 114 1.83 165.3 170.63 -8.85S 29 52 30 69 25 32.2 23 2 56 29 114 1.83 165.3 170.64 -8.84S 30 0 0 69 29 20.8 23 3 6 29 114 1.83 165.3 170.65 -8.83S 30 7 30 69 33 8.5 23 3 15 29 114 1.83 165.3 170.66 -8.82S 30 15 0 69 36 55.3 23 3 25 29 114 1.83 165.3 170.67 -8.81S 30 22 30 69 40 41.3 23 3 34 29 115 1.82 165.4 170.68 -8.80S 30 30 0 69 44 26.3 23 3 43 29 115 1.82 165.4 170.69 -8.79S 30 37 30 69 48 10.6 23 3 53 29 115 1.82 165.4 170.70 -8.78S 30 45 0 69 51 53.9 23 4 2 29 115 1.82 165.4 170.71 -8.77S 30 52 30 69 55 36.4 23 4 11 29 115 1.82 165.4 170.72 -8.76S 31 0 0 69 59 18.0 23 4 20 29 116 1.81 165.4 170.73 -8.75S 31 7 30 70 2 58.7 23 4 30 29 116 1.81 165.4 170.74 -8.74S 31 15 0 70 6 38.5 23 4 39 29 116 1.81 165.4 170.75 -8.73S 31 22 30 70 10 17.5 23 4 48 29 116 1.81 165.4 170.76 -8.71S 31 30 0 70 13 55.5 23 4 57 29 116 1.81 165.5 170.77 -8.70S 31 37 30 70 17 32.7 23 5 6 29 117 1.81 165.5 170.78 -8.69S 31 45 0 70 21 9.0 23 5 15 29 117 1.80 165.5 170.80 -8.68S 31 52 30 70 24 44.5 23 5 24 29 117 1.80 165.5 170.81 -8.67S 32 0 0 70 28 19.0 23 5 33 29 117 1.80 165.5 170.82 -8.66S 32 7 30 70 31 52.7 23 5 42 29 117 1.80 165.5 170.83 -8.65S 32 15 0 70 35 25.5 23 5 51 29 118 1.80 165.5 170.84 -8.64S 32 22 30 70 38 57.4 23 6 0 29 118 1.80 165.5 170.85 -8.63S 32 30 0 70 42 28.4 23 6 9 29 118 1.80 165.5 170.86 -8.62S 32 37 30 70 45 58.5 23 6 18 29 118 1.79 165.5 170.87 -8.61S 32 45 0 70 49 27.8 23 6 27 29 118 1.79 165.6 170.88 -8.60S 32 52 30 70 52 56.2 23 6 35 29 119 1.79 165.6 170.89 -8.59S 33 0 0 70 56 23.7 23 6 44 29 119 1.79 165.6 170.90 -8.58S 33 7 30 70 59 50.3 23 6 53 29 119 1.79 165.6 170.91 -8.57S 33 15 0 71 3 16.0 23 7 2 29 119 1.79 165.6 170.92 -8.56S 33 22 30 71 6 40.8 23 7 10 29 119 1.79 165.6 170.93 -8.55S 33 30 0 71 10 4.8 23 7 19 29 120 1.78 165.6 170.94 -8.54S 33 37 30 71 13 27.9 23 7 28 29 120 1.78 165.6 170.95 -8.53S 33 45 0 71 16 50.1 23 7 36 29 120 1.78 165.6 170.96 -8.52S 33 52 30 71 20 11.4 23 7 45 29 120 1.78 165.7 170.97 -8.51S 34 0 0 71 23 31.9 23 7 53 29 120 1.78 165.7 170.98 -8.49S 34 7 30 71 26 51.5 23 8 2 29 120 1.78 165.7 170.99 -8.48S 34 15 0 71 30 10.2 23 8 10 29 121 1.78 165.7 171.00 -8.47S 34 22 30 71 33 28.0 23 8 19 29 121 1.78 165.7 171.02 -8.46S 34 30 0 71 36 45.0 23 8 27 29 121 1.77 165.7 171.03 -8.45S 34 37 30 71 40 1.1 23 8 36 29 121 1.77 165.7 171.04 -8.44S 34 45 0 71 43 16.3 23 8 44 29 121 1.77 165.7 171.05 -8.43S 34 52 30 71 46 30.7 23 8 52 29 122 1.77 165.7 171.06 -8.42S 35 0 0 71 49 44.2 23 9 1 29 122 1.77 165.7 171.07 -8.41S Path coordinates are referred to WGS84 (as used by GPS), with the nominal site altitude being referenced to Mean Sea Level. The path is adjusted for the effects of refraction at low moon altitudes. Projected diameter of star 12 meters [CHARM/CADARS, 2 measures] 730 is variable: 730 = V0480 Tau, 5.09 to 5.13, V, Type DSCTC, Period 0.042 days 730 is double: AB 5.1 10.6 182" 301.9 (BUP 70) Graze path of B approximately 484.5 km south, and 248.7 secs earlier compared to A - refer to graze profile for exact distances Librations Long -6.66 Lat +4.14 P +169.78 D +3.21 Illumination of moon 62%- Elongation of Moon 104 Vertical Profile Scale approx. 3.69 km/arcsec at mean distance of moon Horizontal Scale Factor 1.87 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -13.2 2.8 4.2 4.9 5.3 5.6 5.8 5.9 -11.2 2.8 4.2 4.9 5.3 5.6 5.8 5.9 -9.2 2.8 4.2 4.9 5.3 5.6 5.8 5.9 -7.2 2.8 4.2 4.9 5.3 5.6 5.8 5.9 -5.2 2.8 4.2 4.9 5.3 5.6 5.8 5.9 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 04514+1850BUP 70 1897 2011 11 303 302 175.5 181.5 5.12 10.57 A7IV-V +081-034 +007-046 +18 743 N 045122.46+185023.5 ------------------------------------------------ Interferometric catalogue entries 045122.46+185023.5 Hyades vB 123 BUP 70A HD 30780 HIP 22565 04514+1850 N Date PA Sep M1 M2 1991.9022 . . < 0.030 . . . . . 549 22 3.8 1 Msn1993a Sc 1995.868 . . < 0.05 . . . >3.7 . 2200 400 5.1 1 Pat1998 Si 2005.8690 . . < 0.036 . . . . . 550 24 3.8 1 Msn2009 Su 045122.46+185023.5 Hyades vB 123 BUP 70 HD 30780 HIP 22565 04514+1850 N Date PA Sep M1 M2 1991.25 . . < 0.1 . 5.15 . . . 511 222 0.3 1 HIP1997e Hh 1991.45 301.7 . 179.24 . 5.115 0.009 10.569 0.061 530 100 1.4 1 TYC2002 Ht 1991.45 . . . . 5.344 0.014 11.342 0.083 430 90 1.4 1 TYC2002 Ht ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period V0480 Tau DSCTC 5.09 5.13 V 0.042 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Ähtäri 24.1 62.6 253km 22 55 16.1 Angeli 25.7 68.9 105km 22 57 24.9 Enontekiö 23.6 68.4 142km 22 54 37.7 Gävle 17.1 60.7 83km 22 45 35.4 Haapajärvi 25.3 63.7 219km 22 56 56.6 Inari 27.0 68.9 60km 22 59 15.1 Ivalo 27.5 68.7 29km 22 59 55.4 Jönköping 14.0 57.8 152km 22 41 32.0 Kaaresuvanto 22.5 68.5 183km 22 53 2.0 Kalajoki 23.9 64.3 125km 22 55 3.1 Karigasniemi 25.8 69.4 126km 22 57 39.8 Kaskinen 21.2 62.4 142km 22 51 16.9 Kaustinen 23.7 63.6 164km 22 54 42.9 Kemijärvi 27.4 66.7 94km 22 59 47.7 Kihlanki 23.6 67.6 100km 22 54 31.6 Kittilä 24.9 67.7 57km 22 56 22.5 Kokkola 23.1 63.8 122km 22 53 55.9 Kolari 23.8 67.3 77km 22 54 50.7 Kuusamo 29.2 66.0 215km 23 2 4.8 Laitila 21.7 60.9 271km 22 51 54.9 Lapua 23.0 63.0 177km 22 53 45.5 Maarianhamina 19.9 60.1 249km 22 49 29.4 Meltaus 25.4 66.9 4km 22 57 0.4 Merikarvia 21.5 61.9 191km 22 51 39.9 Muonio 23.7 68.0 117km 22 54 40.9 Näätämö 29.1 69.7 39km 23 1 58.1 Nellim 28.3 68.8 15km 23 0 56.0 Nunnanen 24.5 68.4 114km 22 55 49.8 Nuorgam 27.9 70.1 102km 23 0 22.6 Oulainen 24.8 64.3 160km 22 56 14.8 Oulu Puolivälikangas 25.5 65.0 134km 22 57 10.5 Parkano 23.0 62.0 247km 22 53 47.0 Pello 24.0 66.8 38km 22 55 5.4 Pori 21.8 61.5 231km 22 52 4.8 Posio 28.2 66.1 164km 23 0 45.2 Pudasjärvi 27.0 65.4 171km 22 59 11.8 Puolanka 27.7 64.9 235km 23 0 6.3 Pyhäjärvi 26.0 63.7 252km 22 57 50.0 Raahe 24.5 64.7 117km 22 55 47.8 Ranua 26.5 65.9 112km 22 58 33.3 Rovaniemi 25.7 66.5 45km 22 57 30.3 Salla 28.7 66.8 132km 23 1 23.8 Savukoski 28.2 67.3 82km 23 0 45.4 Seinäjoki 22.8 62.8 183km 22 53 32.4 Sevettijärvi 28.6 69.5 46km 23 1 18.7 Skellfteå 20.9 64.8 28km 22 50 50.9 Skiippagurra 28.2 70.2 96km 23 0 49.7 Sodankylä 26.6 67.4 17km 22 58 40.3 Stockholm 18.1 59.3 220km 22 46 52.8 Taivalkoski 28.3 65.6 207km 23 0 51.7 Tervola 24.8 66.1 37km 22 56 14.5 Tornio 24.1 65.8 27km 22 55 20.1 Tulppio 29.2 67.8 87km 23 2 6.1 Ulvila Vesitorni 21.9 61.4 240km 22 52 15.3 Umeå 20.3 63.8 5km 22 49 56.3 Utsjoki Ailigas 27.1 69.9 116km 22 59 18.0 Uusikaarlepyy 22.5 63.5 118km 22 53 5.5 Vaasa Sundom 21.6 63.0 112km 22 51 46.2 Vimpeli 23.8 63.2 198km 22 54 53.5 Virrat 23.8 62.2 266km 22 54 50.6 Vuotso 27.1 68.1 8km 22 59 22.4 Ylitornio 23.7 66.3 20km 22 54 40.9