Grazing Occultation of 1663pG8 Magnitude 5.0 [Red = 4.4] R1663 = tau Leonis Date: 2016 Jan 27 21h 19m, to 2016 Jan 27 21h 22m 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 71 45 39.3 21 18 32 9 107 6.68 18.5 353.80 5.48N 15 30 0 71 44 40.8 21 18 36 9 108 6.56 18.6 353.82 5.46N 16 0 0 71 43 39.5 21 18 40 9 108 6.44 18.6 353.85 5.44N 16 30 0 71 42 35.3 21 18 44 9 109 6.32 18.6 353.87 5.41N 17 0 0 71 41 28.2 21 18 48 9 109 6.21 18.6 353.90 5.38N 17 30 0 71 40 18.1 21 18 52 9 110 6.10 18.7 353.92 5.36N 18 0 0 71 39 5.1 21 18 57 9 110 5.99 18.7 353.95 5.33N 18 30 0 71 37 48.9 21 19 1 10 111 5.89 18.7 353.98 5.30N 19 0 0 71 36 30.0 21 19 6 10 111 5.79 18.7 354.01 5.28N 19 30 0 71 35 8.1 21 19 10 10 112 5.70 18.8 354.03 5.25N 20 0 0 71 33 43.1 21 19 15 10 112 5.60 18.8 354.06 5.22N 20 30 0 71 32 15.2 21 19 20 10 113 5.51 18.8 354.09 5.19N 21 0 0 71 30 44.2 21 19 25 10 113 5.43 18.9 354.11 5.17N 21 30 0 71 29 10.1 21 19 30 11 114 5.34 18.9 354.14 5.14N 22 0 0 71 27 32.9 21 19 35 11 114 5.26 18.9 354.17 5.11N 22 30 0 71 25 52.7 21 19 40 11 115 5.18 18.9 354.20 5.08N 23 0 0 71 24 9.3 21 19 45 11 115 5.10 19.0 354.23 5.06N 23 30 0 71 22 22.9 21 19 51 11 116 5.02 19.0 354.25 5.03N 24 0 0 71 20 33.2 21 19 56 11 116 4.95 19.0 354.28 5.00N 24 30 0 71 18 40.4 21 20 2 12 117 4.88 19.1 354.31 4.97N 25 0 0 71 16 44.4 21 20 8 12 117 4.81 19.1 354.34 4.94N 25 30 0 71 14 45.1 21 20 13 12 118 4.74 19.1 354.37 4.91N 26 0 0 71 12 42.6 21 20 19 12 118 4.67 19.1 354.40 4.89N 26 30 0 71 10 36.9 21 20 26 12 119 4.61 19.2 354.42 4.86N 27 0 0 71 8 27.9 21 20 32 12 119 4.54 19.2 354.45 4.83N 27 30 0 71 6 15.5 21 20 38 13 120 4.48 19.2 354.48 4.80N 28 0 0 71 3 59.8 21 20 44 13 120 4.42 19.3 354.51 4.77N 28 30 0 71 1 40.8 21 20 51 13 121 4.36 19.3 354.54 4.74N 29 0 0 70 59 18.4 21 20 58 13 121 4.30 19.3 354.57 4.71N 29 30 0 70 56 52.5 21 21 5 13 122 4.24 19.3 354.60 4.68N 30 0 0 70 54 23.2 21 21 11 13 122 4.19 19.4 354.63 4.65N 30 30 0 70 51 50.5 21 21 18 14 123 4.13 19.4 354.66 4.62N 31 0 0 70 49 14.3 21 21 26 14 123 4.08 19.4 354.69 4.59N 31 30 0 70 46 34.5 21 21 33 14 124 4.03 19.5 354.72 4.56N 32 0 0 70 43 51.1 21 21 40 14 124 3.98 19.5 354.75 4.53N 32 30 0 70 41 4.2 21 21 48 14 125 3.93 19.5 354.78 4.50N 33 0 0 70 38 13.7 21 21 56 14 125 3.88 19.6 354.81 4.47N 33 30 0 70 35 19.5 21 22 3 15 126 3.83 19.6 354.85 4.44N 34 0 0 70 32 21.6 21 22 11 15 126 3.78 19.6 354.88 4.40N 34 30 0 70 29 20.1 21 22 20 15 127 3.74 19.6 354.91 4.37N 35 0 0 70 26 16.2 21 22 28 15 127 3.69 19.7 354.94 4.34N 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 5 meters [CHARM/CADARS, 1 measures] 1663 is in the Kepler2 program, ID= 201652583 1663 is triple: AB 5.1 7.5 89" 181.3 (STFA 19) Graze path of B 255.15 km north, and 58.4 secs later compared to A AD 5.1 9.5 761" 92.0 (STFA 19) Graze path of D 671.30 km south, and 1554.6 secs later compared to A Librations Long +2.89 Lat +0.87 P +354.38 D -0.89 Illumination of moon 86%- Elongation of Moon 136 Vertical Profile Scale approx. 3.12 km/arcsec at mean distance of moon Horizontal Scale Factor 1.80 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 0.9 2.1 3.3 3.9 4.2 4.4 4.5 4.5 2.9 2.2 3.5 4.1 4.4 4.5 4.6 4.7 4.9 3.7 5.0 5.6 6.0 6.1 6.3 6.3 6.9 3.7 5.0 5.6 6.0 6.2 6.3 6.4 8.9 3.9 5.2 5.8 6.1 6.3 6.5 6.6 ------------------------------------------------------------------------------ Double star catalogue details Star is a Kepler2 target star. EPIC_ID = 201652583 ------------------------------------------------ WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 11279+0251STFA 19AB 1821 2012 62 169 181 95.2 89.4 5.05 7.47 G8II-III +016-010 -090+017 +03 2504 NLD 112756.23+025122.5 11279+0251STFA 19AD 1875 2000 4 92 92 766.5 762.0 5.05 9.51 G7.5IIIa +016-010 -005-018 +03 2507 N 112756.23+025122.5 11279+0251STFA 19BC 1910 2012 4 234 231 106.5 103.5 7.47 14.48 -090+017 -005+053 N 112756.17+024953.5 11279+0251STFA 19BD 1875 1991 3 85 86 755.2 763.9 7.47 9.51 -090+017 -002-017 N 112756.17+024953.5 ------------------------------------------------ Interferometric catalogue entries 112756.23+025122.5 HR 4418 STFA 19A HD 99648 HIP 55945 11279+02 Date PA Sep M1 M2 N 1991.25 . . < 0.1 . 5.12 . . . 511 222 0.3 1 HIP1997e H 112756.23+025122.5 HR 4418 STFA 19AB HD 99648 HIP 55945 11279+02 Date PA Sep M1 M2 N 1991.73 180.1 . 89.266 . 5.053 0.009 7.466 0.012 530 100 1.4 1 TYC2000b H 1991.73 . . . . 6.204 0.014 7.870 0.016 430 90 1.4 1 TYC2000b H 112756.23+025122.5 HR 4418 STFA 19AD HD 99648 HIP 55945 11279+02 Date PA Sep M1 M2 N 1991.71 92.3 . 762.18 . 5.053 0.009 9.506 0.031 530 100 1.4 1 TYC2002 H 1991.71 . . . . 6.204 0.014 11.288 0.092 430 90 1.4 1 TYC2002 H ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Näätämö 29.1 69.7 142km 21 20 59 Nuorgam 27.9 70.1 107km 21 20 43 Utsjoki Ailigas 27.1 69.9 135km 21 20 33