Grazing Occultation of 677WA6 Magnitude 4.8 [Red = 4.7] S Date: 2016 Dec 13 3h 6m, to 2016 Dec 13 3h 12m 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 72 24 39.2 3 5 34 20 261 2.79 352.9 1.53 25.72N 15 30 0 72 19 59.3 3 5 45 20 262 2.82 352.9 1.55 25.74N 16 0 0 72 15 15.2 3 5 55 19 263 2.84 353.0 1.57 25.76N 16 30 0 72 10 26.7 3 6 6 19 263 2.86 353.0 1.60 25.78N 17 0 0 72 5 34.1 3 6 17 19 264 2.89 353.0 1.62 25.80N 17 30 0 72 0 37.1 3 6 28 19 264 2.92 353.0 1.64 25.82N 18 0 0 71 55 35.9 3 6 39 19 265 2.94 353.0 1.66 25.84N 18 30 0 71 50 30.2 3 6 50 19 265 2.97 353.1 1.68 25.86N 19 0 0 71 45 20.2 3 7 0 18 266 3.00 353.1 1.70 25.88N 19 30 0 71 40 5.9 3 7 11 18 266 3.03 353.1 1.72 25.90N 20 0 0 71 34 47.1 3 7 22 18 267 3.06 353.1 1.75 25.92N 20 30 0 71 29 23.9 3 7 33 18 268 3.09 353.2 1.77 25.95N 21 0 0 71 23 56.2 3 7 43 18 268 3.12 353.2 1.79 25.97N 21 30 0 71 18 24.0 3 7 54 18 269 3.15 353.2 1.81 25.99N 22 0 0 71 12 47.3 3 8 5 17 269 3.19 353.2 1.83 26.01N 22 30 0 71 7 6.1 3 8 15 17 270 3.22 353.2 1.85 26.03N 23 0 0 71 1 21.4 3 8 26 17 270 3.26 353.3 1.87 26.05N 23 30 0 70 55 31.0 3 8 36 17 271 3.29 353.3 1.89 26.07N 24 0 0 70 49 36.2 3 8 47 17 271 3.33 353.3 1.92 26.09N 24 30 0 70 43 36.7 3 8 57 17 272 3.37 353.3 1.94 26.11N 25 0 0 70 37 32.7 3 9 7 16 272 3.41 353.3 1.96 26.13N 25 30 0 70 31 24.0 3 9 18 16 273 3.45 353.4 1.98 26.16N 26 0 0 70 25 10.6 3 9 28 16 273 3.49 353.4 2.00 26.18N 26 30 0 70 18 52.7 3 9 38 16 274 3.54 353.4 2.02 26.20N 27 0 0 70 12 30.1 3 9 48 16 275 3.58 353.4 2.04 26.22N 27 30 0 70 6 2.8 3 9 58 15 275 3.63 353.5 2.07 26.24N 28 0 0 69 59 30.8 3 10 9 15 276 3.68 353.5 2.09 26.26N 28 30 0 69 52 54.3 3 10 19 15 276 3.73 353.5 2.11 26.28N 29 0 0 69 46 11.4 3 10 28 15 277 3.78 353.5 2.13 26.30N 29 30 0 69 39 24.9 3 10 38 15 277 3.84 353.5 2.15 26.32N 30 0 0 69 32 34.1 3 10 48 14 278 3.89 353.6 2.17 26.35N 30 30 0 69 25 38.7 3 10 58 14 278 3.95 353.6 2.19 26.37N 31 0 0 69 18 38.5 3 11 8 14 279 4.01 353.6 2.22 26.39N 31 30 0 69 11 33.7 3 11 17 14 279 4.07 353.6 2.24 26.41N 32 0 0 69 4 24.1 3 11 27 14 280 4.14 353.6 2.26 26.43N 32 30 0 68 57 9.9 3 11 36 13 280 4.21 353.7 2.28 26.45N 33 0 0 68 49 51.0 3 11 45 13 281 4.28 353.7 2.30 26.47N 33 30 0 68 42 27.5 3 11 55 13 281 4.35 353.7 2.32 26.49N 34 0 0 68 34 59.2 3 12 4 13 282 4.43 353.7 2.34 26.51N 34 30 0 68 27 26.4 3 12 13 13 282 4.51 353.7 2.36 26.53N 35 0 0 68 19 48.9 3 12 22 12 283 4.59 353.8 2.38 26.55N 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 2 meters [CHARM/CADARS, 3 measures] 677 is variable: 677 = NSV 1627, 4.78, , Type DSCT: 677 is double: AB 4.8 6.5 254" 130.0 (LDS2246) Graze path of B 672.28 km north, and 280.1 secs later compared to A C A S S I N I R E G I O N G R A Z E Librations Long +0.17 Lat +7.40 P +2.00 D -7.13 Illumination of moon 98%+ Elongation of Moon 166 Vertical Profile Scale approx. 3.39 km/arcsec at mean distance of moon Horizontal Scale Factor 2.14 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 22.1 3.8 5.2 5.8 6.2 6.4 6.6 6.6 24.1 3.8 5.2 5.8 6.2 6.4 6.6 6.7 26.1 3.9 5.2 5.8 6.2 6.4 6.6 6.7 28.1 3.9 5.2 5.8 6.2 6.4 6.6 6.7 30.1 4.0 5.3 6.0 6.3 6.5 6.7 6.8 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 04306+1612LDS2246 1901 2011 26 130 130 249.5 254.0 4.78 6.54 A6IV +105-026 +098-023 +15 637 N 043033.63+161138.5 ------------------------------------------------ Interferometric catalogue entries 043033.57+161138.7 Hyades vB 82 LDS2246A HD 28527 HIP 21029 04306+1612 N Date PA Sep M1 M2 1978.7250 V240.1 . . . . . . . . 1 Wit1979 O 1978.7251 V226.3 . . . . . . . . 1 Rad1980 O 1979.1737 V104.0 . . . . . . . . 1 Pts1981a O 1979.1737 V 95.8 . . . . . . . . 1 Rad1982b O 1979.1737 V102.0 . . . . . . . . 1 Fek1980 O 1979.6969 V179.4 . . . . . . . . 1 Rad1982b O 1979.6969 V303.4 . . . . . . . . 1 Evn1981 O 1979.6970 V311.7 . . . . . . . . 1 Rad1982a O 1979.6971 V284.0 . 0.0103 0.0011 . . 2.7 0.2 550 80 . 1 Pts1981a O 1980.0711 V 85.7 . 0.0053 0.0015 . . 3.9 0.5 450 50 . 1 Pts1981a O 1980.0711 V 85.7 . 0.0053 0.0015 . . 3.0 0.4 700 70 . 1 Pts1981a O 1980.0714 V102.1 . . . . . . . . 1 Rad1982b O 1980.0714 V113.5 . . . . . . . . 1 Evn1981 O 1980.0715 V 85.3 . 0.0045 0.0007 . . 3.0 0.3 440 50 . 1 Pts1981a O 1980.0715 V 85.3 . . . . . . . 630 60 . 1 Pts1981a O 1980.0715 V 85.3 . 0.0045 0.0007 . . 1.8 0.4 790 60 . 1 Pts1981a O 1980.0715 V 84.0 . . . . . . . . 1 Cun1982 O 1983.0505 . . < 0.030 . . . . . 549 22 3.8 1 Msn1996b Sc 1984.0553 . . < 0.030 . . . . . 549 22 3.8 1 Msn1996b Sc 1986.8923 . . < 0.030 . . . . . 549 22 3.8 1 Msn1996b Sc 1991.9021 . . < 0.030 . . . . . 549 22 3.8 2 Msn1993a Sc 1994.976 . . < 0.05 . . . >4.7 . 2200 400 5.1 1 Pat1998 Si 2005.8688 . . < 0.036 . . . . . 550 24 3.8 1 Msn2009 Su 043033.63+161138.5 HR 1427 LDS2246 HD 28527 HIP 21029 04306+1612 N Date PA Sep M1 M2 1991.25 130.7 . 250.216 . 4.78 . 6.50 . 550 0.3 1 HIP1997b Hh 1991.53 130.7 . 250.22 . 4.785 0.009 6.536 0.010 530 100 1.4 1 TYC2002 Ht 1991.53 . . . . 4.982 0.014 7.012 0.015 430 90 1.4 1 TYC2002 Ht ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period NSV 1627 DSCT: 4.78 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Enontekiö 23.6 68.4 246km 3 8 39 Ivalo 27.5 68.7 136km 3 9 59 Kilpisjärvi 20.8 69.0 236km 3 7 39 Näätämö 29.1 69.7 7km 3 10 30 Nuorgam 27.9 70.1 6km 3 10 6 Tulppio 29.2 67.8 186km 3 10 32 Utsjoki Ailigas 27.1 69.9 28km 3 9 50