Grazing Occultation of 635cG8 Magnitude 3.7 [Red = 3.1] s R635 = Hyadum I = gamma Tauri Date: 2017 Mar 04 21h 7m, to 2017 Mar 04 21h 19m 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 18 0 0 63 34 45.1 21 11 15 21 262 2.56 352.6 2.14 1.32N 18 30 0 63 29 51.4 21 11 29 21 263 2.59 352.6 2.17 1.35N 19 0 0 63 24 53.4 21 11 43 21 263 2.63 352.6 2.20 1.38N 19 30 0 63 19 51.2 21 11 57 21 264 2.66 352.7 2.23 1.41N 20 0 0 63 14 44.7 21 12 10 20 264 2.70 352.7 2.26 1.44N 20 30 0 63 9 34.0 21 12 24 20 265 2.73 352.7 2.29 1.47N 21 0 0 63 4 19.0 21 12 37 20 266 2.77 352.7 2.32 1.50N 21 30 0 62 58 59.7 21 12 51 20 266 2.81 352.8 2.35 1.53N 22 0 0 62 53 36.1 21 13 4 19 267 2.84 352.8 2.38 1.56N 22 30 0 62 48 8.3 21 13 17 19 267 2.88 352.8 2.41 1.59N 23 0 0 62 42 36.2 21 13 30 19 268 2.92 352.9 2.44 1.62N 23 30 0 62 36 59.9 21 13 43 19 268 2.97 352.9 2.47 1.65N 24 0 0 62 31 19.4 21 13 56 18 269 3.01 352.9 2.50 1.68N 24 30 0 62 25 34.6 21 14 9 18 269 3.06 352.9 2.53 1.71N 25 0 0 62 19 45.6 21 14 21 18 270 3.10 353.0 2.55 1.74N 25 30 0 62 13 52.4 21 14 34 18 270 3.15 353.0 2.58 1.76N 26 0 0 62 7 55.0 21 14 46 17 271 3.20 353.0 2.61 1.79N 26 30 0 62 1 54.1 21 14 58 17 271 3.25 353.1 2.64 1.82N 27 0 0 61 55 48.2 21 15 10 17 272 3.31 353.1 2.67 1.85N 27 30 0 61 49 38.3 21 15 22 17 272 3.36 353.1 2.70 1.88N 28 0 0 61 43 24.2 21 15 34 16 273 3.42 353.1 2.72 1.90N 28 30 0 61 37 6.0 21 15 45 16 273 3.48 353.2 2.75 1.93N 29 0 0 61 30 43.7 21 15 57 16 274 3.54 353.2 2.78 1.96N 29 30 0 61 24 17.2 21 16 8 15 274 3.61 353.2 2.81 1.99N 30 0 0 61 17 46.7 21 16 19 15 275 3.68 353.3 2.83 2.01N 30 30 0 61 11 11.0 21 16 30 15 275 3.75 353.3 2.86 2.04N 31 0 0 61 4 31.9 21 16 41 15 276 3.82 353.3 2.89 2.07N 31 30 0 60 57 49.1 21 16 52 14 276 3.89 353.3 2.91 2.09N 32 0 0 60 51 2.3 21 17 2 14 277 3.97 353.4 2.94 2.12N 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 8 meters [CHARM/CADARS, 8 measures] 635 is variable: 635 = NSV 1553, 3.60 to 3.67, V 635 is double: AB 3.7 0.40" 179.0 (BLM 1) Graze path of B approximately 1.1 km north, and 0.1 secs earlier compared to A - refer to graze profile for exact distances C A S S I N I R E G I O N G R A Z E Librations Long +0.29 Lat +7.53 P +2.61 D -7.25 Illumination of moon 43%+ Elongation of Moon 82 Vertical Profile Scale approx. 2.77 km/arcsec at mean distance of moon Horizontal Scale Factor 2.01 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -2.3 2.9 4.2 4.8 5.2 5.4 5.5 5.6 -0.3 2.9 4.2 4.8 5.2 5.4 5.5 5.6 1.7 4.5 5.9 6.6 7.0 7.3 7.5 7.6 3.7 4.6 5.9 6.6 7.1 7.3 7.5 7.6 5.7 5.3 6.7 7.4 7.9 8.2 8.4 8.5 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Jyväskylä Rihlaperä 25.7 62.2 4km 21 14 38.6 Ähtäri 24.1 62.6 6km 21 13 58.4 Vaasa Sundom 21.6 63.0 7km 21 12 52.8 Mikkeli Kiiskinmäki 27.2 61.7 20km 21 15 15.7 Savonlinna 28.9 61.9 33km 21 15 53.8 Imatra 28.8 61.2 34km 21 15 51.5 Mäntyharju 26.9 61.4 55km 21 15 7.3 Hartola 26.0 61.6 56km 21 14 46.4 Varkaus 27.9 62.3 57km 21 15 30.8 Rautalampi 26.7 62.6 59km 21 15 2.8 Lappeenranta 28.2 61.1 64km 21 15 38.0 Grazing Occultation of 635cG8 Magnitude 3.7 [Red = 3.1] s R635 = Hyadum I = gamma Tauri Date: 2017 Mar 04 21h 7m, to 2017 Mar 04 21h 19m 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 43 26.8 21 7 16 25 253 2.15 352.0 1.62 0.80N 10 15 0 64 41 34.4 21 7 24 25 254 2.16 352.1 1.64 0.82N 10 30 0 64 39 41.0 21 7 32 25 254 2.17 352.1 1.66 0.84N 10 45 0 64 37 46.4 21 7 39 25 254 2.18 352.1 1.68 0.86N 11 0 0 64 35 50.9 21 7 47 24 255 2.20 352.1 1.69 0.87N 11 15 0 64 33 54.3 21 7 55 24 255 2.21 352.1 1.71 0.89N 11 30 0 64 31 56.6 21 8 3 24 255 2.22 352.1 1.72 0.91N 11 45 0 64 29 57.9 21 8 10 24 255 2.23 352.2 1.74 0.92N 12 0 0 64 27 58.1 21 8 18 24 256 2.24 352.2 1.76 0.94N 12 15 0 64 25 57.2 21 8 26 24 256 2.25 352.2 1.77 0.95N 12 30 0 64 23 55.4 21 8 33 24 256 2.26 352.2 1.79 0.97N 12 45 0 64 21 52.4 21 8 41 24 257 2.28 352.2 1.81 0.99N 13 0 0 64 19 48.4 21 8 48 24 257 2.29 352.2 1.82 1.00N 13 15 0 64 17 43.3 21 8 56 23 257 2.30 352.3 1.84 1.02N 13 30 0 64 15 37.2 21 9 3 23 257 2.31 352.3 1.85 1.04N 13 45 0 64 13 30.1 21 9 11 23 258 2.33 352.3 1.87 1.05N 14 0 0 64 11 21.8 21 9 18 23 258 2.34 352.3 1.89 1.07N 14 15 0 64 9 12.5 21 9 26 23 258 2.35 352.3 1.90 1.08N 14 30 0 64 7 2.1 21 9 33 23 258 2.36 352.3 1.92 1.10N 14 45 0 64 4 50.7 21 9 41 23 259 2.38 352.4 1.93 1.12N 15 0 0 64 2 38.2 21 9 48 23 259 2.39 352.4 1.95 1.13N 15 15 0 64 0 24.7 21 9 55 23 259 2.40 352.4 1.97 1.15N 15 30 0 63 58 10.0 21 10 3 22 260 2.42 352.4 1.98 1.16N 15 45 0 63 55 54.4 21 10 10 22 260 2.43 352.4 2.00 1.18N 16 0 0 63 53 37.6 21 10 17 22 260 2.44 352.4 2.01 1.19N 16 15 0 63 51 19.8 21 10 24 22 260 2.46 352.5 2.03 1.21N 16 30 0 63 49 0.9 21 10 32 22 261 2.47 352.5 2.04 1.23N 16 45 0 63 46 41.0 21 10 39 22 261 2.49 352.5 2.06 1.24N 17 0 0 63 44 20.0 21 10 46 22 261 2.50 352.5 2.08 1.26N 17 15 0 63 41 57.9 21 10 53 22 262 2.52 352.5 2.09 1.27N 17 30 0 63 39 34.8 21 11 0 22 262 2.53 352.5 2.11 1.29N 17 45 0 63 37 10.6 21 11 7 21 262 2.55 352.5 2.12 1.30N 18 0 0 63 34 45.4 21 11 15 21 262 2.56 352.6 2.14 1.32N 18 15 0 63 32 19.1 21 11 22 21 263 2.58 352.6 2.15 1.33N 18 30 0 63 29 51.7 21 11 29 21 263 2.59 352.6 2.17 1.35N 18 45 0 63 27 23.3 21 11 36 21 263 2.61 352.6 2.18 1.37N 19 0 0 63 24 53.8 21 11 43 21 263 2.63 352.6 2.20 1.38N 19 15 0 63 22 23.2 21 11 50 21 264 2.64 352.6 2.22 1.40N 19 30 0 63 19 51.5 21 11 56 21 264 2.66 352.7 2.23 1.41N 19 45 0 63 17 18.8 21 12 3 20 264 2.68 352.7 2.25 1.43N 20 0 0 63 14 45.1 21 12 10 20 264 2.70 352.7 2.26 1.44N 20 15 0 63 12 10.2 21 12 17 20 265 2.71 352.7 2.28 1.46N 20 30 0 63 9 34.3 21 12 24 20 265 2.73 352.7 2.29 1.47N 20 45 0 63 6 57.4 21 12 31 20 265 2.75 352.7 2.31 1.49N 21 0 0 63 4 19.3 21 12 37 20 266 2.77 352.7 2.32 1.50N 21 15 0 63 1 40.2 21 12 44 20 266 2.79 352.8 2.34 1.52N 21 30 0 62 59 0.0 21 12 51 20 266 2.80 352.8 2.35 1.53N 21 45 0 62 56 18.8 21 12 57 19 266 2.82 352.8 2.37 1.55N 22 0 0 62 53 36.5 21 13 4 19 267 2.84 352.8 2.38 1.56N 22 15 0 62 50 53.1 21 13 11 19 267 2.86 352.8 2.40 1.58N 22 30 0 62 48 8.7 21 13 17 19 267 2.88 352.8 2.41 1.59N 22 45 0 62 45 23.2 21 13 24 19 267 2.90 352.9 2.43 1.61N 23 0 0 62 42 36.6 21 13 30 19 268 2.92 352.9 2.44 1.62N 23 15 0 62 39 49.0 21 13 37 19 268 2.95 352.9 2.46 1.64N 23 30 0 62 37 0.3 21 13 43 19 268 2.97 352.9 2.47 1.65N 23 45 0 62 34 10.6 21 13 50 18 268 2.99 352.9 2.48 1.67N 24 0 0 62 31 19.8 21 13 56 18 269 3.01 352.9 2.50 1.68N 24 15 0 62 28 27.9 21 14 2 18 269 3.03 352.9 2.51 1.69N 24 30 0 62 25 35.0 21 14 9 18 269 3.06 353.0 2.53 1.71N 24 45 0 62 22 41.0 21 14 15 18 270 3.08 353.0 2.54 1.72N 25 0 0 62 19 46.0 21 14 21 18 270 3.10 353.0 2.56 1.74N 25 15 0 62 16 50.0 21 14 27 18 270 3.13 353.0 2.57 1.75N 25 30 0 62 13 52.8 21 14 34 18 270 3.15 353.0 2.59 1.77N 25 45 0 62 10 54.6 21 14 40 17 271 3.18 353.0 2.60 1.78N 26 0 0 62 7 55.4 21 14 46 17 271 3.20 353.0 2.61 1.80N 26 15 0 62 4 55.1 21 14 52 17 271 3.23 353.1 2.63 1.81N 26 30 0 62 1 53.8 21 14 58 17 271 3.25 353.1 2.64 1.82N 26 45 0 61 58 52.0 21 15 4 17 272 3.28 353.1 2.65 1.84N 27 0 0 61 55 48.6 21 15 10 17 272 3.31 353.1 2.67 1.85N 27 15 0 61 52 44.2 21 15 16 17 272 3.34 353.1 2.68 1.86N 27 30 0 61 49 38.7 21 15 22 17 272 3.36 353.1 2.70 1.88N 27 45 0 61 46 32.2 21 15 28 16 273 3.39 353.1 2.71 1.89N 28 0 0 61 43 24.7 21 15 34 16 273 3.42 353.1 2.72 1.91N 28 15 0 61 40 16.1 21 15 39 16 273 3.45 353.2 2.74 1.92N 28 30 0 61 37 6.5 21 15 45 16 273 3.48 353.2 2.75 1.93N 28 45 0 61 33 55.8 21 15 51 16 274 3.51 353.2 2.77 1.95N 29 0 0 61 30 44.1 21 15 57 16 274 3.54 353.2 2.78 1.96N 29 15 0 61 27 31.4 21 16 2 16 274 3.58 353.2 2.79 1.97N 29 30 0 61 24 17.7 21 16 8 15 274 3.61 353.2 2.81 1.99N 29 45 0 61 21 2.9 21 16 13 15 275 3.64 353.2 2.82 2.00N 30 0 0 61 17 47.1 21 16 19 15 275 3.68 353.3 2.83 2.01N 30 15 0 61 14 30.3 21 16 24 15 275 3.71 353.3 2.85 2.03N 30 30 0 61 11 11.7 21 16 30 15 275 3.75 353.3 2.86 2.04N 30 45 0 61 7 52.8 21 16 35 15 276 3.78 353.3 2.87 2.05N 31 0 0 61 4 32.5 21 16 41 15 276 3.82 353.3 2.89 2.07N 31 15 0 61 1 11.6 21 16 46 15 276 3.86 353.3 2.90 2.08N 31 30 0 60 57 49.7 21 16 51 14 276 3.89 353.3 2.90 2.08N 31 45 0 60 54 26.8 21 16 57 14 277 3.93 353.3 2.92 2.10N 32 0 0 60 51 2.9 21 17 2 14 277 3.97 353.4 2.93 2.11N 32 15 0 60 47 38.0 21 17 7 14 277 4.02 353.4 2.94 2.12N 32 30 0 60 44 12.1 21 17 12 14 277 4.06 353.4 2.96 2.14N 32 45 0 60 40 45.3 21 17 17 14 278 4.10 353.4 2.97 2.15N 33 0 0 60 37 17.4 21 17 22 14 278 4.14 353.4 2.98 2.16N 33 15 0 60 33 48.5 21 17 27 13 278 4.19 353.4 2.99 2.17N 33 30 0 60 30 18.7 21 17 32 13 278 4.24 353.4 3.01 2.19N 33 45 0 60 26 47.8 21 17 37 13 279 4.28 353.4 3.02 2.20N 34 0 0 60 23 16.0 21 17 42 13 279 4.33 353.5 3.03 2.21N 34 15 0 60 19 43.2 21 17 47 13 279 4.38 353.5 3.05 2.23N 34 30 0 60 16 9.5 21 17 52 13 279 4.43 353.5 3.06 2.24N 34 45 0 60 12 34.8 21 17 56 13 280 4.48 353.5 3.07 2.25N 35 0 0 60 8 59.1 21 18 1 12 280 4.53 353.5 3.08 2.26N 35 15 0 60 5 22.5 21 18 6 12 280 4.59 353.5 3.10 2.28N 35 30 0 60 1 44.9 21 18 10 12 280 4.65 353.5 3.11 2.29N 35 45 0 59 58 6.4 21 18 15 12 280 4.70 353.5 3.12 2.30N 36 0 0 59 54 26.9 21 18 19 12 281 4.76 353.6 3.13 2.31N 36 15 0 59 50 46.5 21 18 24 12 281 4.82 353.6 3.14 2.33N 36 30 0 59 47 5.2 21 18 28 12 281 4.88 353.6 3.16 2.34N 36 45 0 59 43 22.9 21 18 33 11 281 4.95 353.6 3.17 2.35N 37 0 0 59 39 39.6 21 18 37 11 282 5.01 353.6 3.18 2.36N 37 15 0 59 35 55.5 21 18 41 11 282 5.08 353.6 3.19 2.37N 37 30 0 59 32 10.4 21 18 45 11 282 5.15 353.6 3.21 2.39N 37 45 0 59 28 24.4 21 18 50 11 282 5.22 353.6 3.22 2.40N 38 0 0 59 24 37.5 21 18 54 11 283 5.29 353.7 3.23 2.41N 38 15 0 59 20 49.6 21 18 58 11 283 5.37 353.7 3.24 2.42N 38 30 0 59 17 0.9 21 19 2 10 283 5.45 353.7 3.25 2.43N 38 45 0 59 13 11.3 21 19 6 10 283 5.53 353.7 3.26 2.44N 39 0 0 59 9 20.7 21 19 10 10 284 5.61 353.7 3.28 2.46N 39 15 0 59 5 29.3 21 19 14 10 284 5.69 353.7 3.29 2.47N 39 30 0 59 1 37.0 21 19 17 10 284 5.78 353.7 3.30 2.48N 39 45 0 58 57 43.9 21 19 21 10 284 5.87 353.7 3.31 2.49N 40 0 0 58 53 49.8 21 19 25 10 284 5.97 353.7 3.32 2.50N 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 8 meters [CHARM/CADARS, 8 measures] 635 is variable: 635 = NSV 1553, 3.60 to 3.67, V 635 is double: AB 3.7 0.40" 179.0 (BLM 1) Graze path of B approximately 1.1 km north, and 0.1 secs earlier compared to A - refer to graze profile for exact distances C A S S I N I R E G I O N G R A Z E Librations Long +0.29 Lat +7.53 P +2.62 D -7.25 Illumination of moon 43%+ Elongation of Moon 82 Vertical Profile Scale approx. 2.77 km/arcsec at mean distance of moon Horizontal Scale Factor 2.01 deg/min At longitude 25.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -2.3 2.9 4.2 4.8 5.2 5.4 5.5 5.6 -0.3 2.9 4.2 4.8 5.2 5.4 5.5 5.6 1.7 4.5 5.9 6.6 7.0 7.3 7.5 7.6 3.7 4.6 5.9 6.6 7.1 7.3 7.5 7.6 5.7 5.3 6.7 7.4 7.9 8.2 8.4 8.5 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 04198+1538BLM 1 1978 1978 1 179 179 0.4 0.4 3.65 G9.5IIIab +115-025 +15 612 N 041947.53+153739.7 ------------------------------------------------ Interferometric catalogue entries 041947.53+153739.7 HR 1346 BLM 1 HD 27371 HIP 20205 04198+1538 N Date PA Sep M1 M2 1976.9229 . . < 0.035 . . . . . 552 20 3.8 1 McA1978c Sc 1978.8756 179.2 2.0 0.395 0.012 . . . . 520 30 3.9 1 BLM1982 S 1991.25 . . < 0.1 . 3.81 . . . 511 222 0.3 1 HIP1997e Hh 1991.8966 . . < 0.030 . . . . . 549 22 3.8 1 Msn1993a Sc 1996.022 . . < 0.05 . . . >1.0 . 2200 400 5.1 1 Pat1998 Si ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period NSV 1553 3.60 3.67 V ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Ähtäri 24.1 62.6 5km 21 13 58.2 Artjärvi Tähtikallio 26.2 60.7 139km 21 14 50.9 Forssa 23.6 60.8 185km 21 13 46.4 Hämeenlinna 24.4 61.0 149km 21 14 6.7 Hämeenlinnanväylä 24.9 60.2 218km 21 14 18.6 Hamina 27.2 60.6 135km 21 15 14.7 Hartola 26.0 61.6 56km 21 14 46.2 Helsinki Kaivopuisto 25.0 60.2 225km 21 14 19.9 Imatra 28.8 61.2 34km 21 15 51.3 Järvenpää 25.1 60.5 189km 21 14 23.4 Joensuu Jakokoski 30.0 62.7 143km 21 16 18.7 Jyväskylä Rihlaperä 25.7 62.2 4km 21 14 38.5 Kajaani Lehtikangas 27.7 64.2 244km 21 15 27.4 Kangasala 24.0 61.4 115km 21 13 55.9 Kemiö 22.8 60.1 271km 21 13 24.3 Kokkola 23.1 63.8 116km 21 13 33.4 Kuhmo 29.5 64.1 270km 21 16 7.9 Kuopio Huuhanmäki 27.6 62.9 110km 21 15 25.2 Lahti Pirttiharju 25.6 61.0 126km 21 14 35.6 Lappeenranta 28.2 61.1 64km 21 15 37.8 Loimaa 23.1 60.8 192km 21 13 31.4 Loviisa 26.2 60.5 168km 21 14 51.2 Maarianhamina 19.9 60.1 330km 21 12 8.5 Mäntyharju 26.9 61.4 55km 21 15 7.1 Merikarvia 21.5 61.9 117km 21 12 50.7 Mikkeli Kiiskinmäki 27.2 61.7 20km 21 15 15.6 Nilsiä 28.1 63.2 151km 21 15 35.5 Nurmes 29.1 63.5 206km 21 15 59.7 Oulu Puolivälikangas 25.5 65.0 281km 21 14 33.1 Pello 24.0 66.8 424km 21 13 55.0 Pirkkola 24.9 60.2 218km 21 14 18.7 Pori 21.8 61.5 149km 21 12 58.6 Porvoo 25.7 60.4 186km 21 14 38.3 Pudasjärvi 27.0 65.4 341km 21 15 9.6 Puolanka 27.7 64.9 306km 21 15 25.8 Raahe 24.5 64.7 228km 21 14 8.0 Ranua 26.5 65.9 387km 21 14 58.0 Rautalampi 26.7 62.6 59km 21 15 2.7 Salo 23.1 60.4 239km 21 13 33.6 Savonlinna 28.9 61.9 33km 21 15 53.6 Siuntio 24.2 60.2 239km 21 14 0.8 Tallinna 24.8 59.4 309km 21 14 14.8 Tampere Kauppi 23.8 61.5 108km 21 13 50.5 Tervola 24.8 66.1 371km 21 14 16.1 Tornio 24.1 65.8 337km 21 13 59.5 Turku Isoheikkilä 22.2 60.5 250km 21 13 9.9 Ulvila Vesitorni 21.9 61.4 153km 21 13 1.9 Vaasa Sundom 21.6 63.0 7km 21 12 52.7 Vantaa 25.0 60.3 208km 21 14 20.6 Varkaus 27.9 62.3 57km 21 15 30.6