Grazing Occultation of 847cB4 Magnitude 3.0 [Red = 3.1] e R847 = zeta Tauri Date: 2020 Jan 09 0h 23m, to 2020 Jan 09 0h 45m 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 10 0 0 68 47 27.1 0 23 26 37 227 1.34 174.2 174.81 -0.82S 10 15 0 68 46 12.7 0 23 36 37 228 1.34 174.2 174.83 -0.84S 10 30 0 68 44 57.0 0 23 47 37 228 1.34 174.2 174.85 -0.86S 10 45 0 68 43 40.2 0 23 58 37 228 1.35 174.3 174.87 -0.88S 11 0 0 68 42 22.3 0 24 9 37 229 1.35 174.3 174.89 -0.90S 11 15 0 68 41 3.1 0 24 20 36 229 1.35 174.3 174.91 -0.92S 11 30 0 68 39 42.8 0 24 31 36 229 1.36 174.3 174.93 -0.94S 11 45 0 68 38 21.3 0 24 42 36 230 1.36 174.3 174.95 -0.96S 12 0 0 68 36 58.7 0 24 53 36 230 1.36 174.4 174.97 -0.98S 12 15 0 68 35 34.8 0 25 4 36 231 1.37 174.4 174.99 -1.00S 12 30 0 68 34 9.8 0 25 14 36 231 1.37 174.4 175.01 -1.02S 12 45 0 68 32 43.6 0 25 25 36 231 1.37 174.4 175.03 -1.04S 13 0 0 68 31 16.2 0 25 36 36 232 1.38 174.4 175.05 -1.06S 13 15 0 68 29 47.6 0 25 47 36 232 1.38 174.5 175.07 -1.08S 13 30 0 68 28 17.8 0 25 58 36 232 1.39 174.5 175.09 -1.10S 13 45 0 68 26 46.8 0 26 9 36 233 1.39 174.5 175.11 -1.12S 14 0 0 68 25 14.5 0 26 20 36 233 1.39 174.5 175.13 -1.14S 14 15 0 68 23 41.1 0 26 31 36 233 1.40 174.5 175.15 -1.16S 14 30 0 68 22 6.5 0 26 42 36 234 1.40 174.6 175.17 -1.18S 14 45 0 68 20 30.7 0 26 52 35 234 1.40 174.6 175.19 -1.21S 15 0 0 68 18 53.6 0 27 3 35 234 1.41 174.6 175.22 -1.23S 15 15 0 68 17 15.3 0 27 14 35 235 1.41 174.6 175.24 -1.25S 15 30 0 68 15 35.8 0 27 25 35 235 1.42 174.6 175.26 -1.27S 15 45 0 68 13 55.0 0 27 36 35 235 1.42 174.7 175.28 -1.29S 16 0 0 68 12 13.0 0 27 47 35 236 1.42 174.7 175.30 -1.31S 16 15 0 68 10 29.8 0 27 58 35 236 1.43 174.7 175.32 -1.33S 16 30 0 68 8 45.3 0 28 9 35 236 1.43 174.7 175.34 -1.35S 16 45 0 68 6 59.5 0 28 20 35 237 1.44 174.7 175.36 -1.37S 17 0 0 68 5 12.5 0 28 30 35 237 1.44 174.8 175.38 -1.39S 17 15 0 68 3 24.3 0 28 41 35 237 1.44 174.8 175.40 -1.41S 17 30 0 68 1 34.8 0 28 52 35 238 1.45 174.8 175.42 -1.43S 17 45 0 67 59 44.0 0 29 3 35 238 1.45 174.8 175.44 -1.45S 18 0 0 67 57 51.9 0 29 14 34 238 1.46 174.8 175.46 -1.47S 18 15 0 67 55 58.6 0 29 25 34 239 1.46 174.9 175.48 -1.49S 18 30 0 67 54 4.0 0 29 36 34 239 1.47 174.9 175.50 -1.51S 18 45 0 67 52 8.2 0 29 47 34 239 1.47 174.9 175.52 -1.53S 19 0 0 67 50 11.0 0 29 58 34 240 1.47 174.9 175.54 -1.55S 19 15 0 67 48 12.6 0 30 9 34 240 1.48 174.9 175.56 -1.57S 19 30 0 67 46 12.8 0 30 20 34 240 1.48 175.0 175.58 -1.59S 19 45 0 67 44 11.8 0 30 30 34 241 1.49 175.0 175.60 -1.61S 20 0 0 67 42 9.5 0 30 41 34 241 1.49 175.0 175.62 -1.63S 20 15 0 67 40 5.9 0 30 52 34 241 1.50 175.0 175.64 -1.65S 20 30 0 67 38 1.0 0 31 3 34 242 1.50 175.1 175.66 -1.67S 20 45 0 67 35 54.7 0 31 14 34 242 1.51 175.1 175.68 -1.69S 21 0 0 67 33 47.2 0 31 25 33 242 1.51 175.1 175.70 -1.71S 21 15 0 67 31 38.3 0 31 36 33 243 1.52 175.1 175.72 -1.73S 21 30 0 67 29 28.1 0 31 47 33 243 1.52 175.1 175.74 -1.75S 21 45 0 67 27 16.5 0 31 58 33 243 1.53 175.2 175.76 -1.77S 22 0 0 67 25 3.6 0 32 9 33 243 1.53 175.2 175.78 -1.79S 22 15 0 67 22 49.4 0 32 20 33 244 1.54 175.2 175.80 -1.81S 22 30 0 67 20 33.9 0 32 31 33 244 1.54 175.2 175.82 -1.83S 22 45 0 67 18 16.9 0 32 41 33 244 1.55 175.2 175.84 -1.85S 23 0 0 67 15 58.7 0 32 52 33 245 1.55 175.3 175.86 -1.88S 23 15 0 67 13 39.1 0 33 3 33 245 1.56 175.3 175.89 -1.90S 23 30 0 67 11 18.1 0 33 14 33 245 1.56 175.3 175.91 -1.92S 23 45 0 67 8 55.7 0 33 25 33 246 1.57 175.3 175.93 -1.94S 24 0 0 67 6 32.0 0 33 36 32 246 1.57 175.3 175.95 -1.96S 24 15 0 67 4 6.9 0 33 47 32 246 1.58 175.4 175.97 -1.98S 24 30 0 67 1 40.4 0 33 58 32 247 1.58 175.4 175.99 -2.00S 24 45 0 66 59 12.5 0 34 9 32 247 1.59 175.4 176.01 -2.02S 25 0 0 66 56 43.2 0 34 20 32 247 1.59 175.4 176.03 -2.04S 25 15 0 66 54 12.6 0 34 31 32 248 1.60 175.4 176.05 -2.06S 25 30 0 66 51 40.5 0 34 42 32 248 1.61 175.5 176.07 -2.08S 25 45 0 66 49 7.1 0 34 53 32 248 1.61 175.5 176.09 -2.10S 26 0 0 66 46 32.2 0 35 3 32 249 1.62 175.5 176.11 -2.12S 26 15 0 66 43 55.9 0 35 14 32 249 1.62 175.5 176.13 -2.14S 26 30 0 66 41 18.2 0 35 25 32 249 1.63 175.5 176.15 -2.16S 26 45 0 66 38 39.1 0 35 36 31 250 1.64 175.6 176.17 -2.18S 27 0 0 66 35 58.5 0 35 47 31 250 1.64 175.6 176.19 -2.20S 27 15 0 66 33 16.6 0 35 58 31 250 1.65 175.6 176.21 -2.22S 27 30 0 66 30 33.1 0 36 9 31 251 1.65 175.6 176.23 -2.24S 27 45 0 66 27 48.3 0 36 20 31 251 1.66 175.6 176.25 -2.26S 28 0 0 66 25 2.0 0 36 31 31 251 1.67 175.7 176.27 -2.28S 28 15 0 66 22 14.2 0 36 42 31 252 1.67 175.7 176.29 -2.30S 28 30 0 66 19 25.0 0 36 53 31 252 1.68 175.7 176.31 -2.32S 28 45 0 66 16 34.3 0 37 4 31 252 1.69 175.7 176.33 -2.34S 29 0 0 66 13 42.2 0 37 15 31 253 1.69 175.7 176.35 -2.36S 29 15 0 66 10 48.6 0 37 25 30 253 1.70 175.8 176.37 -2.38S 29 30 0 66 7 53.5 0 37 36 30 253 1.71 175.8 176.39 -2.40S 29 45 0 66 4 57.0 0 37 47 30 253 1.71 175.8 176.41 -2.42S 30 0 0 66 1 58.9 0 37 58 30 254 1.72 175.8 176.43 -2.44S 30 15 0 65 58 59.4 0 38 9 30 254 1.73 175.8 176.45 -2.46S 30 30 0 65 55 58.4 0 38 20 30 254 1.73 175.9 176.47 -2.48S 30 45 0 65 52 55.9 0 38 31 30 255 1.74 175.9 176.49 -2.50S 31 0 0 65 49 51.9 0 38 42 30 255 1.75 175.9 176.51 -2.52S 31 15 0 65 46 46.4 0 38 53 30 255 1.76 175.9 176.53 -2.54S 31 30 0 65 43 39.4 0 39 4 30 256 1.76 175.9 176.55 -2.56S 31 45 0 65 40 30.9 0 39 15 29 256 1.77 176.0 176.57 -2.58S 32 0 0 65 37 20.9 0 39 25 29 256 1.78 176.0 176.59 -2.60S 32 15 0 65 34 9.4 0 39 36 29 257 1.79 176.0 176.61 -2.62S 32 30 0 65 30 56.3 0 39 47 29 257 1.80 176.0 176.63 -2.64S 32 45 0 65 27 41.7 0 39 58 29 257 1.80 176.0 176.65 -2.66S 33 0 0 65 24 25.5 0 40 9 29 258 1.81 176.1 176.67 -2.68S 33 15 0 65 21 7.9 0 40 20 29 258 1.82 176.1 176.69 -2.70S 33 30 0 65 17 48.7 0 40 31 29 258 1.83 176.1 176.71 -2.72S 33 45 0 65 14 28.0 0 40 41 29 259 1.84 176.1 176.73 -2.74S 34 0 0 65 11 5.7 0 40 52 28 259 1.84 176.1 176.75 -2.76S 34 15 0 65 7 41.9 0 41 3 28 259 1.85 176.2 176.77 -2.78S 34 30 0 65 4 16.5 0 41 14 28 259 1.86 176.2 176.79 -2.80S 34 45 0 65 0 49.5 0 41 25 28 260 1.87 176.2 176.81 -2.82S 35 0 0 64 57 21.0 0 41 36 28 260 1.88 176.2 176.83 -2.84S 35 15 0 64 53 51.0 0 41 46 28 260 1.89 176.2 176.84 -2.85S 35 30 0 64 50 19.4 0 41 57 28 261 1.90 176.3 176.86 -2.87S 35 45 0 64 46 46.2 0 42 8 28 261 1.91 176.3 176.88 -2.89S 36 0 0 64 43 11.4 0 42 19 28 261 1.92 176.3 176.90 -2.91S 36 15 0 64 39 35.1 0 42 29 27 262 1.93 176.3 176.92 -2.93S 36 30 0 64 35 57.2 0 42 40 27 262 1.94 176.3 176.94 -2.95S 36 45 0 64 32 17.7 0 42 51 27 262 1.95 176.4 176.96 -2.97S 37 0 0 64 28 36.6 0 43 2 27 263 1.96 176.4 176.98 -2.99S 37 15 0 64 24 54.0 0 43 12 27 263 1.97 176.4 177.00 -3.01S 37 30 0 64 21 9.8 0 43 23 27 263 1.98 176.4 177.02 -3.03S 37 45 0 64 17 24.0 0 43 34 27 263 1.99 176.4 177.04 -3.05S 38 0 0 64 13 36.5 0 43 45 27 264 2.00 176.5 177.06 -3.07S 38 15 0 64 9 47.5 0 43 55 26 264 2.01 176.5 177.08 -3.09S 38 30 0 64 5 56.9 0 44 6 26 264 2.02 176.5 177.10 -3.11S 38 45 0 64 2 4.7 0 44 17 26 265 2.03 176.5 177.12 -3.13S 39 0 0 63 58 10.9 0 44 27 26 265 2.04 176.5 177.14 -3.15S 39 15 0 63 54 15.5 0 44 38 26 265 2.05 176.5 177.15 -3.16S 39 30 0 63 50 18.4 0 44 48 26 266 2.06 176.6 177.17 -3.18S 39 45 0 63 46 19.8 0 44 59 26 266 2.07 176.6 177.19 -3.20S 40 0 0 63 42 19.6 0 45 10 26 266 2.09 176.6 177.21 -3.22S 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 4 meters [CHARM/CADARS, 8 measures] 847 is variable: 847 = zet Tau, 2.80 to 3.17, V, Type E/GS+GCAS, Period 132.9735 days, Phase 69% 847 is double: This next pair is not confirmed ** 3.2 5.2 0.007" 350.0 (OCc1268) Graze path of ? approximately 0.0 km south, and 0.0 secs earlier compared to the primary - refer to graze profile for exact distances Librations Long -5.92 Lat +2.27 P +175.78 D +2.11 Illumination of moon 96%+ Elongation of Moon 157 Vertical Profile Scale approx. 2.73 km/arcsec at mean distance of moon Horizontal Scale Factor 1.85 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -6.0 2.2 3.6 4.3 4.8 5.0 5.2 5.4 -4.0 2.2 3.6 4.3 4.8 5.0 5.2 5.4 -2.0 2.2 3.6 4.3 4.8 5.0 5.2 5.4 0.0 2.2 3.6 4.3 4.8 5.0 5.2 5.4 2.0 2.2 3.6 4.3 4.8 5.0 5.2 5.4 ------------------------------------------------------------------------------ Double star catalogue details Interferometric catalogue entries 053738.68+210833.3 HR 1910 zet Tau HD 37202 HIP 26451 05376+21 Date PA Sep M1 M2 1921.300 . . < 0.030 . . . . . 550 1.6 1 Mrr1922 J 1988.9097 . . < 0.077 . . . . . 549 22 1.8 2 Msn1997c S 1991.25 . . V . . 2.97 . . . 511 0.3 1 HIP1997g H 1991.9050 . . < 0.036 . . . . . 549 22 3.8 1 Msn1997c S 1996.8717 . . < 0.055 . . . . . 549 22 2.5 1 Msn1997c S 1997.1255 . . < 0.055 . . . . . 549 22 2.5 1 Msn1997c S ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period zet Tau E/GS+GCAS 2.80 3.17 V 2444936.7810 132.9735 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Angeli 25.7 68.9 207km 0 34 48.6 Bodø 14.4 67.3 118km 0 26 37.3 Enontekiö 23.6 68.4 124km 0 33 19.8 Haapajärvi 25.3 63.7 326km 0 34 33.4 Iisalmi 27.2 63.5 310km 0 35 55.1 Ilomantsi 30.9 62.7 321km 0 38 37.9 Inari 27.0 68.9 229km 0 35 48.3 Ivalo 27.5 68.7 213km 0 36 10.4 Joensuu Jakokoski 30.0 62.7 336km 0 37 57.8 Kaaresuvanto 22.5 68.5 113km 0 32 29.7 Kajaani Lehtikangas 27.7 64.2 229km 0 36 19.3 Kalajoki 23.9 64.3 298km 0 33 33.2 Karigasniemi 25.8 69.4 258km 0 34 56.6 Kaustinen 23.7 63.6 376km 0 33 22.5 Kemijärvi 27.4 66.7 20km 0 36 6.2 Kihlanki 23.6 67.6 41km 0 33 16.6 Kilpisjärvi 20.8 69.0 150km 0 31 15.6 Kittilä 24.9 67.7 70km 0 34 15.2 Kokkola 23.1 63.8 357km 0 32 57.8 Kolari 23.8 67.3 19km 0 33 26.6 Kuhmo 29.5 64.1 202km 0 37 36.6 Kuopio Huuhanmäki 27.6 62.9 369km 0 36 15.3 Kuusamo 29.2 66.0 23km 0 37 22.9 Meltaus 25.4 66.9 3km 0 34 35.4 Muonio 23.7 68.0 81km 0 33 21.5 Näätämö 29.1 69.7 334km 0 37 19.1 Nellim 28.3 68.8 244km 0 36 44.1 Nilsiä 28.1 63.2 327km 0 36 34.5 Nunnanen 24.5 68.4 139km 0 33 57.8 Nuorgam 27.9 70.1 354km 0 36 25.5 Nurmes 29.1 63.5 270km 0 37 20.7 Oulainen 24.8 64.3 281km 0 34 11.1 Oulu Puolivälikangas 25.5 65.0 188km 0 34 40.8 Pello 24.0 66.8 35km 0 33 34.4 Posio 28.2 66.1 28km 0 36 38.0 Pudasjärvi 27.0 65.4 126km 0 35 46.4 Puolanka 27.7 64.9 164km 0 36 16.5 Pyhäjärvi 26.0 63.7 320km 0 35 2.0 Raahe 24.5 64.7 242km 0 33 56.8 Ranua 26.5 65.9 77km 0 35 25.5 Rovaniemi 25.7 66.5 33km 0 34 51.4 Salla 28.7 66.8 54km 0 36 59.7 Savukoski 28.2 67.3 91km 0 36 38.1 Sevettijärvi 28.6 69.5 312km 0 36 56.8 Skellfteå 20.9 64.8 297km 0 31 21.3 Skiippagurra 28.2 70.2 367km 0 36 40.5 Sodankylä 26.6 67.4 74km 0 35 29.3 Suomussalmi 28.9 64.9 138km 0 37 10.3 Taivalkoski 28.3 65.6 81km 0 36 41.7 Tervola 24.8 66.1 92km 0 34 10.9 Tornio 24.1 65.8 127km 0 33 42.1 Tulppio 29.2 67.8 156km 0 37 23.6 Utsjoki Ailigas 27.1 69.9 324km 0 35 49.9 Uusikaarlepyy 22.5 63.5 400km 0 32 31.5 Viitasaari 25.9 63.1 386km 0 34 57.0 Vuotso 27.1 68.1 151km 0 35 52.3 Ylitornio 23.7 66.3 87km 0 33 21.5