Grazing Occultation of 55cG8 Magnitude 6.4 [Red = 0.0] s R55 = 10 Ceti Date: 2016 Jul 24 23h 9m, to 2016 Jul 24 23h 38m 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 56 26 5.7 23 9 7 15 114 3.63 339.1 3.82 -0.94N 15 30 0 56 37 21.0 23 9 43 16 115 3.57 339.1 3.78 -0.90N 16 0 0 56 48 53.7 23 10 19 16 115 3.52 339.0 3.73 -0.86N 16 30 0 57 0 44.1 23 10 56 16 116 3.46 339.0 3.69 -0.81N 17 0 0 57 12 52.0 23 11 34 16 117 3.41 338.9 3.65 -0.78N 17 30 0 57 25 17.5 23 12 12 17 117 3.36 338.9 3.62 -0.74N 18 0 0 57 38 0.7 23 12 51 17 118 3.32 338.9 3.58 -0.70N 18 30 0 57 51 1.8 23 13 30 17 119 3.27 338.8 3.54 -0.66N 19 0 0 58 4 20.6 23 14 11 17 119 3.23 338.8 3.51 -0.63N 19 30 0 58 17 55.1 23 14 51 17 120 3.19 338.8 3.48 -0.60N 20 0 0 58 31 49.3 23 15 33 -12 18 121 3.16 338.7 3.44 -0.56N 20 30 0 58 46 1.1 23 16 15 -11 18 122 3.12 338.7 3.41 -0.53N 21 0 0 59 0 30.4 23 16 57 -11 18 122 3.09 338.7 3.38 -0.50N 21 30 0 59 15 17.0 23 17 40 -11 18 123 3.06 338.6 3.36 -0.48N 22 0 0 59 30 21.1 23 18 23 -11 18 124 3.03 338.6 3.33 -0.45N 22 30 0 59 45 42.4 23 19 7 -10 18 124 3.01 338.6 3.30 -0.43N 23 0 0 60 1 20.9 23 19 51 -10 19 125 2.99 338.6 3.28 -0.40N 23 30 0 60 17 16.5 23 20 36 -10 19 126 2.96 338.5 3.26 -0.38N 24 0 0 60 33 28.8 23 21 21 -9 19 127 2.95 338.5 3.24 -0.36N 24 30 0 60 49 57.7 23 22 6 -9 19 127 2.93 338.5 3.22 -0.34N 25 0 0 61 6 42.9 23 22 51 -9 19 128 2.91 338.5 3.21 -0.33N 25 30 0 61 23 44.1 23 23 37 -8 19 129 2.90 338.5 3.19 -0.31N 26 0 0 61 41 0.9 23 24 23 -8 19 130 2.89 338.5 3.18 -0.30N 26 30 0 61 58 33.2 23 25 9 -8 19 130 2.88 338.5 3.17 -0.29N 27 0 0 62 16 20.8 23 25 56 -7 19 131 2.87 338.4 3.16 -0.28N 27 30 0 62 34 23.1 23 26 42 -7 19 132 2.86 338.4 3.15 -0.27N 28 0 0 62 52 39.7 23 27 29 -6 19 133 2.86 338.4 3.15 -0.27N 28 30 0 63 11 10.3 23 28 15 -6 19 133 2.85 338.4 3.14 -0.26N 29 0 0 63 29 54.4 23 29 2 -6 19 134 2.85 338.4 3.14 -0.26N 29 30 0 63 48 51.7 23 29 49 -5 19 135 2.85 338.4 3.14 -0.26N 30 0 0 64 8 1.5 23 30 35 -5 19 136 2.85 338.4 3.15 -0.27N 30 30 0 64 27 23.5 23 31 22 -4 19 137 2.86 338.4 3.15 -0.27N 31 0 0 64 46 57.1 23 32 8 -4 19 137 2.86 338.4 3.16 -0.28N 31 30 0 65 6 41.8 23 32 54 -4 19 138 2.87 338.5 3.17 -0.29N 32 0 0 65 26 36.9 23 33 40 -3 19 139 2.88 338.5 3.18 -0.30N 32 30 0 65 46 42.1 23 34 25 -3 19 140 2.89 338.5 3.19 -0.31N 33 0 0 66 6 56.5 23 35 11 -2 19 140 2.90 338.5 3.20 -0.32N 33 30 0 66 27 20.0 23 35 56 -2 19 141 2.92 338.5 3.22 -0.34N 34 0 0 66 47 51.7 23 36 40 -1 19 142 2.93 338.5 3.24 -0.36N 34 30 0 67 8 30.9 23 37 24 -1 19 143 2.95 338.5 3.26 -0.38N 35 0 0 67 29 17.0 23 38 8 -1 19 144 2.97 338.6 3.28 -0.40N 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. 55 is variable: 55 = NSV 15093, 5.82 to 6.18, V 55 is double: Graze prediction is based on the mean position of AB 6.47 8.91 0.40" 280.5 (HDS 61) Graze path of A 0.12 km north, and 0.1 secs later compared to prediction Graze path of B 1.10 km south, and 0.6 secs earlier compared to prediction AB 6.47 8.91 0.40" 280.5 (HDS 61) Graze path of B 1.21 km south, and 0.7 secs earlier compared to A C A S S I N I R E G I O N G R A Z E Librations Long -2.35 Lat +3.52 P +3.07 D -3.39 Illumination of moon 72%- Elongation of Moon 116 Vertical Profile Scale approx. 5.52 km/arcsec at mean distance of moon Horizontal Scale Factor 1.81 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -4.3 2.6 3.9 4.5 4.9 5.1 5.3 5.4 -2.3 2.6 3.9 4.5 4.9 5.1 5.3 5.4 -0.3 2.6 3.9 4.5 4.9 5.1 5.3 5.4 1.7 3.1 4.5 5.1 5.5 5.7 5.9 6.0 3.7 4.3 5.7 6.4 6.8 7.0 7.2 7.3 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 00266-0003HDS 61 1991 2008 10 267 276 0.4 0.4 6.47 8.91 G8III +070+001 -00 63 002637.37-000258.3 ------------------------------------------------ Interferometric catalogue entries 002637.37-000258.3 HR 101 HDS 61 HD 2273 HIP 2100 00266-0003 Date PA Sep M1 M2 1991.25 267. . 0.385 . 6.466 0.006 8.915 0.057 511 222 0.3 1 HIP1997a Hh 1991.25 . . . . 6.44 . 8.76 0.01 505 97 0.3 1 Fab2000a Hh 1991.25 . . . . 7.48 . 9.78 0.01 435 70 0.3 1 Fab2000a Hh 1996.6991 270.6 . 0.399 . . . . . 549 22 2.5 1 Hrt1999d Sc 1996.8629 272.0 . 0.398 . . . . . 549 22 2.5 1 Hrt1999d Sc 2003.801 275.6 . 0.42 . . . . . 550 0.7 1 WSI2004b Su 2004.9750 275.2 . 0.433 . . . 2.84 . 754 44 3.5 1 Hor2008 S 2004.9750 275.1 . 0.440 . . . 3.00 . 754 44 3.5 1 Hor2008 S 2007.8173 275.5 . 0.431 . . . 2.60 . 754 44 3.5 1 Hor2010 S 2007.8202 275.7 . 0.437 . . . 2.62 . 550 40 3.5 1 Hor2010 S 2008.7019 276.1 0.3 0.431 0.003 . . 2.52 0.10 550 40 3.5 1 Hor2012a S 2008.8875 275.9 . 0.43 . . . . . 1.0 1 Orl2009 S ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period NSV 15093 5.82 6.18 V ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Ähtäri 24.1 62.6 138km 23 21 29 Artjärvi Tähtikallio 26.2 60.7 76km 23 24 43 Forssa 23.6 60.8 33km 23 20 48 Hämeenlinna 24.4 61.0 14km 23 22 0 Hamina 27.2 60.6 127km 23 26 15 Hartola 26.0 61.6 8km 23 24 25 Helsinki Kaivopuisto 25.0 60.2 68km 23 22 48 Imatra 28.8 61.2 144km 23 28 42 Järvenpää 25.1 60.5 50km 23 23 0 Joensuu Jakokoski 30.0 62.7 90km 23 30 35 Jyväskylä Rihlaperä 25.7 62.2 50km 23 23 56 Kajaani Lehtikangas 27.7 64.2 96km 23 27 5 Kangasala 24.0 61.4 61km 23 21 21 Kemijärvi 27.4 66.7 251km 23 26 37 Kemiö 22.8 60.1 18km 23 19 32 Kokkola 23.1 63.8 263km 23 20 3 Kuhmo 29.5 64.1 19km 23 29 50 Kuopio Huuhanmäki 27.6 62.9 15km 23 26 56 Kuusamo 29.2 66.0 140km 23 29 21 Lahti Pirttiharju 25.6 61.0 33km 23 23 46 Lappeenranta 28.2 61.1 132km 23 27 47 Loviisa 26.2 60.5 97km 23 24 44 Maarianhamina 19.9 60.1 128km 23 15 29 Merikarvia 21.5 61.9 196km 23 17 41 Mikkeli Kiiskinmäki 27.2 61.7 50km 23 26 18 Nilsiä 28.1 63.2 18km 23 27 37 Nurmes 29.1 63.5 3km 23 29 16 Oulu Puolivälikangas 25.5 65.0 238km 23 23 36 Pirkkola 24.9 60.2 60km 23 22 43 Pori 21.8 61.5 157km 23 18 6 Porvoo 25.7 60.4 81km 23 23 56 Posio 28.2 66.1 189km 23 27 45 Pudasjärvi 27.0 65.4 195km 23 25 55 Puolanka 27.7 64.9 138km 23 26 59 Raahe 24.5 64.7 260km 23 22 4 Ranua 26.5 65.9 247km 23 25 11 Rautalampi 26.7 62.6 32km 23 25 28 Salla 28.7 66.8 208km 23 28 31 Salo 23.1 60.4 22km 23 20 3 Savonlinna 28.9 61.9 103km 23 28 51 Tallinna 24.8 59.4 117km 23 22 29 Tampere Kauppi 23.8 61.5 77km 23 21 2 Tulppio 29.2 67.8 234km 23 29 22 Turku Isoheikkilä 22.2 60.5 63km 23 18 44 Ulvila Vesitorni 21.9 61.4 148km 23 18 17 Vaasa Sundom 21.6 63.0 276km 23 17 47 Varkaus 27.9 62.3 33km 23 27 18