Grazing Occultation of 911cB8 Magnitude 6.4 [Red = 6.4] R911 = 141 (Tauri)/Orionis Date: 2020 Feb 05 20h 17m, to 2020 Feb 05 20h 42m 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 64 45 5.1 20 16 47 48 179 0.91 353.9 352.11 -5.10N 10 15 0 64 46 3.6 20 17 1 48 179 0.91 354.0 352.14 -5.07N 10 30 0 64 47 0.8 20 17 14 48 179 0.91 354.0 352.16 -5.04N 10 45 0 64 47 56.5 20 17 27 48 180 0.91 354.0 352.19 -5.02N 11 0 0 64 48 50.9 20 17 40 48 180 0.91 354.1 352.22 -4.99N 11 15 0 64 49 43.9 20 17 54 48 181 0.91 354.1 352.25 -4.96N 11 30 0 64 50 35.6 20 18 7 48 181 0.91 354.1 352.28 -4.93N 11 45 0 64 51 25.9 20 18 20 48 181 0.91 354.1 352.31 -4.90N 12 0 0 64 52 14.9 20 18 33 48 182 0.91 354.2 352.33 -4.87N 12 15 0 64 53 2.5 20 18 46 48 182 0.91 354.2 352.36 -4.85N 12 30 0 64 53 48.7 20 18 59 48 183 0.91 354.2 352.39 -4.82N 12 45 0 64 54 33.6 20 19 13 48 183 0.91 354.2 352.42 -4.79N 13 0 0 64 55 17.1 20 19 26 48 184 0.91 354.3 352.45 -4.76N 13 15 0 64 55 59.4 20 19 39 48 184 0.91 354.3 352.47 -4.73N 13 30 0 64 56 40.2 20 19 52 48 184 0.91 354.3 352.50 -4.71N 13 45 0 64 57 19.7 20 20 5 48 185 0.92 354.4 352.53 -4.68N 14 0 0 64 57 57.9 20 20 18 48 185 0.92 354.4 352.56 -4.65N 14 15 0 64 58 34.8 20 20 31 47 186 0.92 354.4 352.59 -4.62N 14 30 0 64 59 10.3 20 20 44 47 186 0.92 354.4 352.61 -4.59N 14 45 0 64 59 44.5 20 20 57 47 186 0.92 354.5 352.64 -4.57N 15 0 0 65 0 17.4 20 21 10 47 187 0.92 354.5 352.67 -4.54N 15 15 0 65 0 48.9 20 21 23 47 187 0.92 354.5 352.70 -4.51N 15 30 0 65 1 19.1 20 21 36 47 188 0.92 354.6 352.73 -4.48N 15 45 0 65 1 48.0 20 21 49 47 188 0.92 354.6 352.75 -4.45N 16 0 0 65 2 15.6 20 22 2 47 189 0.92 354.6 352.78 -4.43N 16 15 0 65 2 41.8 20 22 15 47 189 0.92 354.6 352.81 -4.40N 16 30 0 65 3 6.8 20 22 27 47 189 0.92 354.7 352.84 -4.37N 16 45 0 65 3 30.4 20 22 40 47 190 0.93 354.7 352.86 -4.34N 17 0 0 65 3 52.7 20 22 53 47 190 0.93 354.7 352.89 -4.32N 17 15 0 65 4 13.7 20 23 6 47 191 0.93 354.8 352.92 -4.29N 17 30 0 65 4 33.4 20 23 19 47 191 0.93 354.8 352.95 -4.26N 17 45 0 65 4 51.8 20 23 32 47 191 0.93 354.8 352.98 -4.23N 18 0 0 65 5 8.9 20 23 44 47 192 0.93 354.8 353.00 -4.20N 18 15 0 65 5 24.6 20 23 57 47 192 0.93 354.9 353.03 -4.18N 18 30 0 65 5 39.1 20 24 10 47 193 0.93 354.9 353.06 -4.15N 18 45 0 65 5 52.3 20 24 23 47 193 0.93 354.9 353.09 -4.12N 19 0 0 65 6 4.2 20 24 36 47 193 0.93 354.9 353.11 -4.09N 19 15 0 65 6 14.7 20 24 48 47 194 0.94 355.0 353.14 -4.07N 19 30 0 65 6 24.0 20 25 1 47 194 0.94 355.0 353.17 -4.04N 19 45 0 65 6 32.0 20 25 14 47 195 0.94 355.0 353.20 -4.01N 20 0 0 65 6 38.6 20 25 26 47 195 0.94 355.1 353.22 -3.98N 20 15 0 65 6 44.0 20 25 39 47 196 0.94 355.1 353.25 -3.96N 20 30 0 65 6 48.1 20 25 52 47 196 0.94 355.1 353.28 -3.93N 20 45 0 65 6 50.9 20 26 5 47 196 0.94 355.1 353.31 -3.90N 21 0 0 65 6 52.4 20 26 17 47 197 0.94 355.2 353.33 -3.87N 21 15 0 65 6 52.6 20 26 30 47 197 0.94 355.2 353.36 -3.85N 21 30 0 65 6 51.5 20 26 43 47 198 0.95 355.2 353.39 -3.82N 21 45 0 65 6 49.2 20 26 55 47 198 0.95 355.2 353.42 -3.79N 22 0 0 65 6 45.5 20 27 8 47 198 0.95 355.3 353.44 -3.76N 22 15 0 65 6 40.5 20 27 20 46 199 0.95 355.3 353.47 -3.74N 22 30 0 65 6 34.2 20 27 33 46 199 0.95 355.3 353.50 -3.71N 22 45 0 65 6 26.7 20 27 46 46 200 0.95 355.4 353.53 -3.68N 23 0 0 65 6 17.8 20 27 58 46 200 0.95 355.4 353.55 -3.65N 23 15 0 65 6 7.7 20 28 11 46 200 0.96 355.4 353.58 -3.63N 23 30 0 65 5 56.3 20 28 23 46 201 0.96 355.4 353.61 -3.60N 23 45 0 65 5 43.6 20 28 36 46 201 0.96 355.5 353.64 -3.57N 24 0 0 65 5 29.5 20 28 49 46 202 0.96 355.5 353.66 -3.55N 24 15 0 65 5 14.2 20 29 1 46 202 0.96 355.5 353.69 -3.52N 24 30 0 65 4 57.6 20 29 14 46 202 0.96 355.5 353.72 -3.49N 24 45 0 65 4 39.7 20 29 26 46 203 0.96 355.6 353.74 -3.46N 25 0 0 65 4 20.6 20 29 39 46 203 0.97 355.6 353.77 -3.44N 25 15 0 65 4 0.1 20 29 51 46 204 0.97 355.6 353.80 -3.41N 25 30 0 65 3 38.3 20 30 4 46 204 0.97 355.7 353.83 -3.38N 25 45 0 65 3 15.2 20 30 16 46 204 0.97 355.7 353.85 -3.35N 26 0 0 65 2 50.9 20 30 29 46 205 0.97 355.7 353.88 -3.33N 26 15 0 65 2 25.2 20 30 42 46 205 0.97 355.7 353.91 -3.30N 26 30 0 65 1 58.3 20 30 54 46 206 0.98 355.8 353.93 -3.27N 26 45 0 65 1 30.1 20 31 7 46 206 0.98 355.8 353.96 -3.25N 27 0 0 65 1 0.5 20 31 19 46 206 0.98 355.8 353.99 -3.22N 27 15 0 65 0 29.7 20 31 32 46 207 0.98 355.8 354.02 -3.19N 27 30 0 64 59 57.6 20 31 44 46 207 0.98 355.9 354.04 -3.16N 27 45 0 64 59 24.1 20 31 57 45 208 0.98 355.9 354.07 -3.14N 28 0 0 64 58 49.4 20 32 9 45 208 0.99 355.9 354.10 -3.11N 28 15 0 64 58 13.4 20 32 21 45 208 0.99 356.0 354.12 -3.08N 28 30 0 64 57 36.0 20 32 34 45 209 0.99 356.0 354.15 -3.06N 28 45 0 64 56 57.4 20 32 46 45 209 0.99 356.0 354.18 -3.03N 29 0 0 64 56 17.4 20 32 59 45 209 0.99 356.0 354.21 -3.00N 29 15 0 64 55 36.2 20 33 11 45 210 0.99 356.1 354.23 -2.98N 29 30 0 64 54 53.6 20 33 24 45 210 1.00 356.1 354.26 -2.95N 29 45 0 64 54 9.8 20 33 36 45 211 1.00 356.1 354.29 -2.92N 30 0 0 64 53 24.6 20 33 49 45 211 1.00 356.1 354.31 -2.89N 30 15 0 64 52 38.1 20 34 1 45 211 1.00 356.2 354.34 -2.87N 30 30 0 64 51 50.3 20 34 14 45 212 1.00 356.2 354.37 -2.84N 30 45 0 64 51 1.2 20 34 26 45 212 1.01 356.2 354.39 -2.81N 31 0 0 64 50 10.8 20 34 38 45 213 1.01 356.2 354.42 -2.79N 31 15 0 64 49 19.1 20 34 51 45 213 1.01 356.3 354.45 -2.76N 31 30 0 64 48 26.0 20 35 3 45 213 1.01 356.3 354.47 -2.73N 31 45 0 64 47 31.7 20 35 16 45 214 1.01 356.3 354.50 -2.71N 32 0 0 64 46 36.0 20 35 28 45 214 1.02 356.4 354.53 -2.68N 32 15 0 64 45 38.9 20 35 41 44 215 1.02 356.4 354.56 -2.65N 32 30 0 64 44 40.6 20 35 53 44 215 1.02 356.4 354.58 -2.63N 32 45 0 64 43 40.9 20 36 5 44 215 1.02 356.4 354.61 -2.60N 33 0 0 64 42 39.8 20 36 18 44 216 1.03 356.5 354.64 -2.57N 33 15 0 64 41 37.5 20 36 30 44 216 1.03 356.5 354.66 -2.55N 33 30 0 64 40 33.8 20 36 43 44 216 1.03 356.5 354.69 -2.52N 33 45 0 64 39 28.8 20 36 55 44 217 1.03 356.5 354.72 -2.49N 34 0 0 64 38 22.4 20 37 8 44 217 1.03 356.6 354.74 -2.46N 34 15 0 64 37 14.7 20 37 20 44 218 1.04 356.6 354.77 -2.44N 34 30 0 64 36 5.6 20 37 32 44 218 1.04 356.6 354.80 -2.41N 34 45 0 64 34 55.3 20 37 45 44 218 1.04 356.7 354.82 -2.38N 35 0 0 64 33 43.5 20 37 57 44 219 1.04 356.7 354.85 -2.36N 35 15 0 64 32 30.4 20 38 10 44 219 1.05 356.7 354.88 -2.33N 35 30 0 64 31 16.0 20 38 22 44 220 1.05 356.7 354.90 -2.30N 35 45 0 64 30 0.2 20 38 35 44 220 1.05 356.8 354.93 -2.28N 36 0 0 64 28 43.0 20 38 47 44 220 1.05 356.8 354.96 -2.25N 36 15 0 64 27 24.5 20 38 59 43 221 1.06 356.8 354.98 -2.22N 36 30 0 64 26 4.6 20 39 12 43 221 1.06 356.8 355.01 -2.20N 36 45 0 64 24 43.3 20 39 24 43 221 1.06 356.9 355.04 -2.17N 37 0 0 64 23 20.7 20 39 37 43 222 1.06 356.9 355.06 -2.14N 37 15 0 64 21 56.7 20 39 49 43 222 1.07 356.9 355.09 -2.12N 37 30 0 64 20 31.3 20 40 2 43 223 1.07 356.9 355.12 -2.09N 37 45 0 64 19 4.6 20 40 14 43 223 1.07 357.0 355.14 -2.06N 38 0 0 64 17 36.4 20 40 26 43 223 1.07 357.0 355.17 -2.04N 38 15 0 64 16 6.9 20 40 39 43 224 1.08 357.0 355.20 -2.01N 38 30 0 64 14 36.0 20 40 51 43 224 1.08 357.0 355.22 -1.98N 38 45 0 64 13 3.7 20 41 4 43 224 1.08 357.1 355.25 -1.96N 39 0 0 64 11 30.0 20 41 16 43 225 1.09 357.1 355.28 -1.93N 39 15 0 64 9 54.9 20 41 29 43 225 1.09 357.1 355.30 -1.90N 39 30 0 64 8 18.3 20 41 41 42 226 1.09 357.2 355.33 -1.88N 39 45 0 64 6 40.4 20 41 53 42 226 1.09 357.2 355.36 -1.85N 40 0 0 64 5 1.1 20 42 6 42 226 1.10 357.2 355.38 -1.83N 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. 911 is double: AB 6.4 0.10" 178.0 (CHR 161) Graze path of B approximately 0.3 km north, and 0.0 secs earlier compared to A - refer to graze profile for exact distances Librations Long -7.00 Lat +1.45 P +353.67 D -0.42 Illumination of moon 85%+ Elongation of Moon 134 Vertical Profile Scale approx. 2.51 km/arcsec at mean distance of moon Horizontal Scale Factor 1.67 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -7.4 2.6 4.0 4.8 5.2 5.6 5.8 5.9 -5.4 2.6 4.0 4.8 5.2 5.6 5.8 5.9 -3.4 2.6 4.0 4.8 5.2 5.6 5.8 5.9 -1.4 2.6 4.0 4.8 5.2 5.6 5.8 5.9 0.6 2.6 4.0 4.8 5.2 5.6 5.8 5.9 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 06017+2224CHR 161 1988 1996 3 261 178 0.1 0.1 6.37 B8V -012-009 +22 1140 N 060141.63+222403.8 ------------------------------------------------ Interferometric catalogue entries 060141.63+222403.8 HR 2116 CHR 161 HD 40724 HIP 28561 06017+22 Date PA Sep M1 M2 N 1988.1703 261.3 . 0.058 . . . . . 549 22 3.6 1 McA1993 S 1991.25 . . < 0.1 . 6.34 . . . 511 222 0.3 1 HIP1997e H 1993.1967 :188.2 . : 0.090 . . . . . 549 22 3.8 1 Hrt1994 S 1996.8718 177.8 . 0.109 . . . . . 549 22 2.5 1 Hrt2000a S ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Haapajärvi 25.3 63.7 146km 20 29 54.7 Iisalmi 27.2 63.5 162km 20 31 28.3 Joensuu Jakokoski 30.0 62.7 239km 20 33 48.3 Kajaani Lehtikangas 27.7 64.2 86km 20 31 55.9 Kalajoki 23.9 64.3 93km 20 28 45.5 Kaustinen 23.7 63.6 172km 20 28 33.2 Kemijärvi 27.4 66.7 189km 20 31 40.9 Kokkola 23.1 63.8 142km 20 28 4.8 Kuhmo 29.5 64.1 87km 20 33 24.2 Kuopio Huuhanmäki 27.6 62.9 233km 20 31 51.4 Kuusamo 29.2 66.0 114km 20 33 8.5 Nilsiä 28.1 63.2 196km 20 32 13.3 Nurmes 29.1 63.5 153km 20 33 6.0 Oulainen 24.8 64.3 90km 20 29 29.1 Oulu Puolivälikangas 25.5 65.0 3km 20 30 3.2 Pello 24.0 66.8 187km 20 28 46.9 Posio 28.2 66.1 126km 20 32 17.3 Pudasjärvi 27.0 65.4 38km 20 31 18.3 Puolanka 27.7 64.9 14km 20 31 52.7 Pyhäjärvi 26.0 63.7 152km 20 30 27.5 Raahe 24.5 64.7 44km 20 29 12.7 Ranua 26.5 65.9 100km 20 30 54.4 Rovaniemi 25.7 66.5 159km 20 30 15.4 Skellfteå 20.9 64.8 40km 20 26 13.1 Suomussalmi 28.9 64.9 7km 20 32 54.2 Taivalkoski 28.3 65.6 66km 20 32 21.5 Tervola 24.8 66.1 111km 20 29 28.9 Tornio 24.1 65.8 84km 20 28 55.8 Trondheim 10.4 63.4 148km 20 17 8.3 Umeå 20.3 63.8 143km 20 25 40.1 Uusikaarlepyy 22.5 63.5 176km 20 27 34.4 Vaasa Sundom 21.6 63.0 231km 20 26 46.5 Ylitornio 23.7 66.3 135km 20 28 32.0