Grazing Occultation of 806SF8 Magnitude 5.0 [Red = 4.7] v R806 = 111 Tauri Date: 2015 Jan 30 14h 42m, to 2015 Jan 30 14h 50m 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 22 0 0 67 48 14 14 42 25 -5 24 103 2.26 175.2 179.18 -3.46S 22 30 0 67 57 18 14 42 50 -6 24 103 2.24 175.2 179.21 -3.50S 23 0 0 68 6 16 14 43 14 -6 24 104 2.22 175.2 179.24 -3.52S 23 30 0 68 15 8 14 43 38 -6 24 105 2.20 175.2 179.26 -3.54S 24 0 0 68 23 54 14 44 3 -7 25 105 2.19 175.3 179.29 -3.57S 24 30 0 68 32 34 14 44 27 -7 25 106 2.17 175.3 179.31 -3.60S 25 0 0 68 41 8 14 44 52 -7 25 106 2.15 175.3 179.34 -3.62S 25 30 0 68 49 36 14 45 16 -7 25 107 2.14 175.3 179.36 -3.65S 26 0 0 68 57 58 14 45 40 -8 25 108 2.12 175.4 179.39 -3.67S 26 30 0 69 6 14 14 46 4 -8 25 108 2.10 175.4 179.42 -3.70S 27 0 0 69 14 25 14 46 29 -8 26 109 2.09 175.4 179.44 -3.72S 27 30 0 69 22 29 14 46 53 -8 26 110 2.07 175.4 179.47 -3.75S 28 0 0 69 30 27 14 47 17 -9 26 110 2.06 175.5 179.49 -3.77S 28 30 0 69 38 19 14 47 41 -9 26 111 2.05 175.5 179.52 -3.80S 29 0 0 69 46 5 14 48 5 -9 26 112 2.03 175.5 179.55 -3.83S 29 30 0 69 53 45 14 48 29 -9 26 112 2.02 175.5 179.57 -3.85S 30 0 0 70 1 19 14 48 52 -10 26 113 2.01 175.6 179.60 -3.88S 30 30 0 70 8 47 14 49 16 -10 27 114 2.00 175.6 179.62 -3.91S 31 0 0 70 16 9 14 49 40 -10 27 114 1.98 175.6 179.65 -3.93S 31 30 0 70 23 25 14 50 3 -10 27 115 1.97 175.7 179.68 -3.96S 32 0 0 70 30 35 14 50 27 -11 27 116 1.96 175.7 179.70 -3.99S Path coordinates are referred to WGS84 (as used by GPS), with the nominal site altitude being referenced to Mean Sea Level. Projected diameter of star 3 meters [CHARM/CADARS, 1 measures] 806 is variable: 806 = V1119 Tau, 4.98 to 5.02, V, Type BY, Period 3.6499 days, Phase 49 % 806 is triple: AB 5.1 8.8 108" 270.9 (S 478) Graze path of B 35.99 km south, and 220.2 secs earlier compared to A AC 5.1 7.9 707" 252.0 (WNO 52) Graze path of C 568.54 km north, and 1412.7 secs earlier compared to A Librations Long +6.19 Lat +6.96 P +180.22 D +7.28 Illumination of moon 83%+ Elongation of Moon 131 Vertical Profile Scale 3.54 km/arcsec at mean distance of moon Horizontal Scale Factor 1.83 deg/min At longitude 27.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -7.7 2.5 3.9 4.6 5.0 5.2 5.4 5.5 -5.7 2.5 3.9 4.6 5.0 5.2 5.4 5.5 -3.7 2.5 3.9 4.6 5.0 5.2 5.4 5.5 -1.7 2.5 3.9 4.6 5.0 5.2 5.4 5.5 0.3 2.5 3.9 4.6 5.0 5.2 5.4 5.5 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 05244+1723S 478AB 1782 2011 40 274 271 46.7 106.7 5.06 8.79 F8V +251-007 +17 920 NLDU 052425.31+172300.8 05244+1723WNO 52AC 1897 2010 16 252 252 707.5 705.2 5.06 7.88 +251-007 +253-005 NV 052425.31+172300.8 ------------------------------------------------ Interferometric catalogue entries 052425.31+172300.8 111 Tau A 478A HD 35296 HIP 25278 05244+1723 N Date PA Sep M1 M2 1988.168 . . < 0.038 . . . . . 549 22 3.6 1 McA1993 Sc 1991.25 . . < 0.1 . 5.11 . . . 511 222 0.3 1 HIP1997e Hh 052425.31+172300.8 BDS 2703 S 478AB HD 35296 HIP 25278 05244+1723 N Date PA Sep M1 M2 1991.41 270.8 . 101.909 . 5.060 0.009 8.786 0.037 530 100 1.4 1 TYC2000d Ht 1991.41 . . . . 5.630 0.014 10.120 0.062 430 90 1.4 1 TYC2000d Ht 052425.31+172300.8 BDS 2703 WNO 52AC HD 35296 HIP 25278 05244+1723 N Date PA Sep M1 M2 1991.25 252.3 . 707.136 . 5.11 . 8.06 . 550 0.3 1 HIP1997b Hh 1991.60 252.3 . 707.143 . 5.060 0.009 8.059 0.013 530 100 1.4 1 TYC2000b Ht 1991.60 . . . . 5.630 0.014 9.357 0.021 430 90 1.4 1 TYC2000b Ht ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period V1119 Tau BY 4.98 5.02 V 2448503.2840 3.6499 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Enontekiö 23.6 68.4 8km 14 43 45 Ivalo 27.5 68.7 65km 14 46 55 Kemijärvi 27.4 66.7 244km 14 46 50 Kilpisjärvi 20.8 69.0 136km 14 41 26 Meltaus 25.4 66.9 170km 14 45 10 Muonio 23.7 68.0 31km 14 43 47 Näätämö 29.1 69.7 12km 14 48 10 Nuorgam 27.9 70.1 53km 14 47 11 Pello 24.0 66.8 145km 14 44 1 Rovaniemi 25.7 66.5 219km 14 45 27 Sodankylä 26.6 67.4 156km 14 46 9 Tervola 24.8 66.1 232km 14 44 42 Tornio 24.1 65.8 236km 14 44 10 Tulppio 29.2 67.8 190km 14 48 15 Utsjoki Ailigas 27.1 69.9 56km 14 46 32