Grazing Occultation of 1525 M2 Magnitude 5.6 [Red = 4.8] v R1525 = 44 Leonis (DE) Date: 2016 Dec 19 2h 27m, to 2016 Dec 19 2h 55m 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 58 4.3 2 27 9 36 159 1.35 199.9 176.98 -1.82S 15 30 0 60 51 39.5 2 27 42 37 160 1.34 200.0 177.04 -1.76S 16 0 0 60 45 7.9 2 28 15 37 161 1.33 200.0 177.10 -1.70S 16 30 0 60 38 29.3 2 28 49 37 162 1.32 200.1 177.15 -1.64S 17 0 0 60 31 43.7 2 29 23 37 162 1.31 200.1 177.21 -1.59S 17 30 0 60 24 51.1 2 29 57 37 163 1.30 200.2 177.27 -1.53S 18 0 0 60 17 51.2 2 30 32 38 164 1.30 200.3 177.33 -1.47S 18 30 0 60 10 44.2 2 31 7 38 165 1.29 200.3 177.39 -1.41S 19 0 0 60 3 29.8 2 31 42 38 165 1.28 200.4 177.45 -1.35S 19 30 0 59 56 8.0 2 32 18 38 166 1.27 200.4 177.50 -1.29S 20 0 0 59 48 38.8 2 32 54 38 167 1.26 200.5 177.56 -1.23S 20 30 0 59 41 2.0 2 33 31 39 168 1.25 200.6 177.62 -1.17S 21 0 0 59 33 17.6 2 34 8 39 169 1.24 200.6 177.68 -1.12S 21 30 0 59 25 25.5 2 34 46 39 169 1.23 200.7 177.74 -1.06S 22 0 0 59 17 25.7 2 35 24 39 170 1.22 200.7 177.80 -1.00S 22 30 0 59 9 18.0 2 36 2 39 171 1.22 200.8 177.86 -0.94S 23 0 0 59 1 2.4 2 36 41 40 172 1.21 200.9 177.92 -0.88S 23 30 0 58 52 38.9 2 37 21 40 173 1.20 200.9 177.98 -0.81S 24 0 0 58 44 7.3 2 38 1 40 174 1.19 201.0 178.04 -0.75S 24 30 0 58 35 27.6 2 38 41 40 175 1.18 201.0 178.10 -0.69S 25 0 0 58 26 39.8 2 39 22 40 175 1.18 201.1 178.16 -0.63S 25 30 0 58 17 43.6 2 40 3 41 176 1.17 201.2 178.22 -0.57S 26 0 0 58 8 39.1 2 40 45 41 177 1.16 201.2 178.29 -0.51S 26 30 0 57 59 26.3 2 41 27 41 178 1.16 201.3 178.35 -0.45S 27 0 0 57 50 5.0 2 42 10 41 179 1.15 201.3 178.41 -0.39S 27 30 0 57 40 35.1 2 42 53 41 180 1.14 201.4 178.47 -0.33S 28 0 0 57 30 56.7 2 43 37 41 181 1.14 201.5 178.53 -0.27S 28 30 0 57 21 9.7 2 44 21 42 182 1.13 201.5 178.59 -0.21S 29 0 0 57 11 13.9 2 45 6 42 182 1.12 201.6 178.65 -0.15S 29 30 0 57 1 9.4 2 45 51 42 183 1.12 201.6 178.71 -0.09S 30 0 0 56 50 56.1 2 46 37 42 184 1.11 201.7 178.77 -0.03S 30 30 0 56 40 34.0 2 47 23 42 185 1.11 201.8 178.83 0.03S 31 0 0 56 30 3.0 2 48 9 42 186 1.10 201.8 178.89 0.09S 31 30 0 56 19 23.0 2 48 57 42 187 1.10 201.9 178.95 0.15S 32 0 0 56 8 34.0 2 49 44 42 188 1.09 201.9 179.01 0.21S 32 30 0 55 57 36.1 2 50 33 43 189 1.09 202.0 179.07 0.27S 33 0 0 55 46 29.1 2 51 21 43 190 1.08 202.1 179.12 0.33S 33 30 0 55 35 13.1 2 52 11 43 191 1.08 202.1 179.18 0.38S 34 0 0 55 23 48.1 2 53 0 43 192 1.07 202.2 179.24 0.44S 34 30 0 55 12 14.0 2 53 51 43 193 1.07 202.2 179.30 0.50S 35 0 0 55 0 30.9 2 54 41 43 194 1.07 202.3 179.35 0.56S 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 10 meters [Estimated] 1525 is variable: 1525 = DE Leo, 5.6, range 0.07, V, Type SRB: Librations Long +7.79 Lat +0.81 P +178.33 D +1.32 Illumination of moon 69%- Elongation of Moon 113 Vertical Profile Scale approx. 2.68 km/arcsec at mean distance of moon Horizontal Scale Factor 1.55 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -4.6 2.8 4.2 5.0 5.4 5.7 6.0 6.1 -2.6 2.8 4.2 5.0 5.4 5.7 6.0 6.1 -0.6 2.8 4.2 5.0 5.4 5.7 6.0 6.1 1.4 3.3 4.7 5.5 6.0 6.3 6.5 6.6 3.4 4.7 6.2 6.9 7.4 7.8 8.0 8.2 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Forssa 23.6 60.8 188km 2 37 31 Hämeenlinna 24.4 61.0 226km 2 38 35 Helsinki Kaivopuisto 25.0 60.2 161km 2 39 18 Järvenpää 25.1 60.5 195km 2 39 29 Kemiö 22.8 60.1 103km 2 36 24 Loviisa 26.2 60.5 223km 2 41 4 Maarianhamina 19.9 60.1 28km 2 32 50 Merikarvia 21.5 61.9 235km 2 34 46 Pirkkola 24.9 60.2 167km 2 39 14 Pori 21.8 61.5 207km 2 35 9 Porvoo 25.7 60.4 203km 2 40 20 Salo 23.1 60.4 135km 2 36 52 Tallinna 24.8 59.4 84km 2 39 1 Turku Isoheikkilä 22.2 60.5 118km 2 35 42 Ulvila Vesitorni 21.9 61.4 205km 2 35 18