Grazing Occultation of 946DM3 Magnitude 3.5 [Red = 2.5] V R946 = Propus = eta Geminorum Date: 2020 Feb 06 2h 15m, to 2020 Feb 06 2h 34m 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 0 0 0 68 15 52.0 2 14 31 26 265 2.03 360.0 356.85 -0.37N 0 15 0 68 11 5.4 2 14 41 26 266 2.04 0.0 356.87 -0.36N 0 30 0 68 6 16.9 2 14 52 26 266 2.05 0.0 356.89 -0.34N 0 45 0 68 1 26.2 2 15 2 26 266 2.06 0.0 356.91 -0.32N 1 0 0 67 56 33.6 2 15 12 26 266 2.07 0.1 356.93 -0.30N 1 15 0 67 51 38.9 2 15 22 26 267 2.08 0.1 356.94 -0.28N 1 30 0 67 46 42.2 2 15 32 26 267 2.09 0.1 356.96 -0.27N 1 45 0 67 41 43.4 2 15 42 25 267 2.10 0.1 356.98 -0.25N 2 0 0 67 36 42.6 2 15 52 25 268 2.11 0.1 357.00 -0.23N 2 15 0 67 31 39.7 2 16 3 25 268 2.12 0.2 357.02 -0.21N 2 30 0 67 26 34.7 2 16 13 25 268 2.13 0.2 357.03 -0.20N 2 45 0 67 21 27.8 2 16 23 25 269 2.14 0.2 357.05 -0.18N 3 0 0 67 16 18.7 2 16 33 25 269 2.15 0.2 357.07 -0.16N 3 15 0 67 11 7.6 2 16 44 25 269 2.16 0.2 357.09 -0.14N 3 30 0 67 5 54.5 2 16 54 25 270 2.18 0.2 357.10 -0.13N 3 45 0 67 0 39.3 2 17 4 25 270 2.19 0.3 357.12 -0.11N 4 0 0 66 55 22.0 2 17 14 24 270 2.20 0.3 357.14 -0.09N 4 15 0 66 50 2.7 2 17 25 24 271 2.21 0.3 357.16 -0.07N 4 30 0 66 44 41.3 2 17 35 24 271 2.22 0.3 357.17 -0.06N 4 45 0 66 39 17.9 2 17 45 24 271 2.23 0.3 357.19 -0.04N 5 0 0 66 33 52.4 2 17 55 24 271 2.25 0.3 357.21 -0.02N 5 15 0 66 28 24.8 2 18 6 24 272 2.26 0.4 357.23 0.00N 5 30 0 66 22 55.2 2 18 16 24 272 2.27 0.4 357.24 0.01N 5 45 0 66 17 23.6 2 18 26 24 272 2.29 0.4 357.26 0.03N 6 0 0 66 11 49.9 2 18 36 24 273 2.30 0.4 357.28 0.05N 6 15 0 66 6 14.1 2 18 47 23 273 2.31 0.4 357.30 0.07N 6 30 0 66 0 36.3 2 18 57 23 273 2.33 0.5 357.31 0.08N 6 45 0 65 54 56.5 2 19 7 23 274 2.34 0.5 357.33 0.10N 7 0 0 65 49 14.6 2 19 17 23 274 2.35 0.5 357.35 0.12N 7 15 0 65 43 30.8 2 19 28 23 274 2.37 0.5 357.36 0.14N 7 30 0 65 37 44.9 2 19 38 23 274 2.38 0.5 357.38 0.15N 7 45 0 65 31 57.0 2 19 48 23 275 2.40 0.5 357.40 0.17N 8 0 0 65 26 7.2 2 19 58 22 275 2.41 0.6 357.41 0.19N 8 15 0 65 20 15.3 2 20 8 22 275 2.43 0.6 357.43 0.20N 8 30 0 65 14 21.4 2 20 19 22 276 2.45 0.6 357.45 0.22N 8 45 0 65 8 25.5 2 20 29 22 276 2.46 0.6 357.47 0.24N 9 0 0 65 2 27.6 2 20 39 22 276 2.48 0.6 357.48 0.25N 9 15 0 64 56 27.8 2 20 49 22 277 2.50 0.6 357.50 0.27N 9 30 0 64 50 26.0 2 20 59 22 277 2.51 0.7 357.52 0.29N 9 45 0 64 44 22.3 2 21 9 22 277 2.53 0.7 357.53 0.30N 10 0 0 64 38 16.6 2 21 20 21 277 2.55 0.7 357.55 0.32N 10 15 0 64 32 9.0 2 21 30 21 278 2.57 0.7 357.56 0.34N 10 30 0 64 25 59.5 2 21 40 21 278 2.59 0.7 357.58 0.35N 10 45 0 64 19 48.1 2 21 50 21 278 2.60 0.7 357.60 0.37N 11 0 0 64 13 34.8 2 22 0 21 279 2.62 0.8 357.61 0.39N 11 15 0 64 7 19.7 2 22 10 21 279 2.64 0.8 357.63 0.40N 11 30 0 64 1 2.6 2 22 20 21 279 2.66 0.8 357.65 0.42N 11 45 0 63 54 43.8 2 22 30 20 280 2.68 0.8 357.66 0.43N 12 0 0 63 48 23.0 2 22 40 20 280 2.70 0.8 357.68 0.45N 12 15 0 63 42 0.5 2 22 50 20 280 2.73 0.8 357.69 0.46N 12 30 0 63 35 36.1 2 22 59 20 280 2.75 0.8 357.71 0.48N 12 45 0 63 29 9.9 2 23 9 20 281 2.77 0.9 357.72 0.50N 13 0 0 63 22 42.0 2 23 19 20 281 2.79 0.9 357.74 0.51N 13 15 0 63 16 12.3 2 23 29 20 281 2.82 0.9 357.76 0.53N 13 30 0 63 9 40.8 2 23 39 19 282 2.84 0.9 357.77 0.54N 13 45 0 63 3 7.7 2 23 48 19 282 2.86 0.9 357.79 0.56N 14 0 0 62 56 32.8 2 23 58 19 282 2.89 0.9 357.80 0.57N 14 15 0 62 49 56.1 2 24 8 19 282 2.91 1.0 357.82 0.59N 14 30 0 62 43 17.9 2 24 17 19 283 2.94 1.0 357.83 0.60N 14 45 0 62 36 37.9 2 24 27 19 283 2.96 1.0 357.85 0.62N 15 0 0 62 29 56.4 2 24 36 18 283 2.99 1.0 357.86 0.63N 15 15 0 62 23 13.2 2 24 46 18 284 3.02 1.0 357.88 0.65N 15 30 0 62 16 28.4 2 24 55 18 284 3.05 1.0 357.89 0.66N 15 45 0 62 9 42.1 2 25 5 18 284 3.08 1.0 357.90 0.68N 16 0 0 62 2 54.2 2 25 14 18 284 3.10 1.1 357.92 0.69N 16 15 0 61 56 4.8 2 25 23 18 285 3.13 1.1 357.93 0.70N 16 30 0 61 49 13.9 2 25 33 18 285 3.17 1.1 357.95 0.72N 16 45 0 61 42 21.5 2 25 42 17 285 3.20 1.1 357.96 0.73N 17 0 0 61 35 27.6 2 25 51 17 285 3.23 1.1 357.97 0.75N 17 15 0 61 28 33.4 2 26 0 17 286 3.26 1.1 357.99 0.76N 17 30 0 61 21 36.7 2 26 9 17 286 3.30 1.1 358.00 0.77N 17 45 0 61 14 38.5 2 26 18 17 286 3.33 1.2 358.01 0.79N 18 0 0 61 7 38.9 2 26 27 17 287 3.37 1.2 358.03 0.80N 18 15 0 61 0 38.1 2 26 36 16 287 3.40 1.2 358.04 0.81N 18 30 0 60 53 35.9 2 26 45 16 287 3.44 1.2 358.05 0.83N 18 45 0 60 46 32.4 2 26 53 16 287 3.48 1.2 358.07 0.84N 19 0 0 60 39 27.7 2 27 2 16 288 3.52 1.2 358.08 0.85N 19 15 0 60 32 21.7 2 27 11 16 288 3.56 1.2 358.09 0.86N 19 30 0 60 25 14.5 2 27 19 16 288 3.60 1.2 358.10 0.88N 19 45 0 60 18 6.1 2 27 28 15 288 3.64 1.3 358.12 0.89N 20 0 0 60 10 56.6 2 27 36 15 289 3.68 1.3 358.13 0.90N 20 15 0 60 3 45.9 2 27 44 15 289 3.73 1.3 358.14 0.91N 20 30 0 59 56 32.4 2 27 53 15 289 3.77 1.3 358.15 0.93N 20 45 0 59 49 19.0 2 28 1 15 290 3.82 1.3 358.16 0.94N 21 0 0 59 42 4.9 2 28 9 14 290 3.87 1.3 358.18 0.95N 21 15 0 59 34 49.9 2 28 17 14 290 3.92 1.3 358.19 0.96N 21 30 0 59 27 33.8 2 28 25 14 290 3.97 1.3 358.20 0.97N 21 45 0 59 20 16.8 2 28 33 14 291 4.02 1.3 358.21 0.98N 22 0 0 59 12 58.8 2 28 41 14 291 4.08 1.4 358.22 0.99N 22 15 0 59 5 40.0 2 28 49 14 291 4.13 1.4 358.23 1.00N 22 30 0 58 58 20.3 2 28 56 13 291 4.19 1.4 358.24 1.01N 22 45 0 58 50 59.7 2 29 4 13 292 4.25 1.4 358.25 1.02N 23 0 0 58 43 38.3 2 29 11 13 292 4.31 1.4 358.26 1.03N 23 15 0 58 36 16.1 2 29 19 13 292 4.37 1.4 358.27 1.04N 23 30 0 58 28 53.1 2 29 26 13 292 4.44 1.4 358.28 1.05N 23 45 0 58 21 29.5 2 29 33 13 293 4.51 1.4 358.29 1.06N 24 0 0 58 14 5.1 2 29 41 12 293 4.57 1.4 358.30 1.07N 24 15 0 58 6 40.0 2 29 48 12 293 4.65 1.4 358.31 1.08N 24 30 0 57 59 14.4 2 29 55 12 293 4.72 1.5 358.32 1.09N 24 45 0 57 51 48.0 2 30 1 12 294 4.80 1.5 358.33 1.10N 25 0 0 57 44 21.2 2 30 8 12 294 4.88 1.5 358.34 1.11N 25 15 0 57 36 53.7 2 30 15 11 294 4.96 1.5 358.35 1.12N 25 30 0 57 29 25.7 2 30 22 11 294 5.04 1.5 358.35 1.13N 25 45 0 57 21 57.2 2 30 28 11 295 5.13 1.5 358.36 1.13N 26 0 0 57 14 28.3 2 30 35 11 295 5.22 1.5 358.37 1.14N 26 15 0 57 6 59.0 2 30 41 11 295 5.32 1.5 358.38 1.15N 26 30 0 56 59 29.2 2 30 47 10 295 5.42 1.5 358.39 1.16N 26 45 0 56 51 59.1 2 30 53 10 296 5.52 1.5 358.39 1.17N 27 0 0 56 44 28.7 2 30 59 10 296 5.62 1.5 358.40 1.17N 27 15 0 56 36 57.9 2 31 5 10 296 5.74 1.5 358.41 1.18N 27 30 0 56 29 26.8 2 31 11 10 296 5.85 1.6 358.42 1.19N 27 45 0 56 21 55.5 2 31 17 10 296 5.97 1.6 358.42 1.19N 28 0 0 56 14 24.0 2 31 22 9 297 6.10 1.6 358.43 1.20N 28 15 0 56 6 52.2 2 31 28 9 297 6.23 1.6 358.44 1.21N 28 30 0 55 59 20.3 2 31 33 9 297 6.36 1.6 358.44 1.21N 28 45 0 55 51 48.3 2 31 39 9 297 6.51 1.6 358.45 1.22N 29 0 0 55 44 16.1 2 31 44 9 298 6.66 1.6 358.45 1.23N 29 15 0 55 36 43.9 2 31 49 8 298 6.81 1.6 358.46 1.23N 29 30 0 55 29 11.6 2 31 54 8 298 6.98 1.6 358.47 1.24N 29 45 0 55 21 39.3 2 31 59 8 298 7.15 1.6 358.47 1.24N 30 0 0 55 14 6.9 2 32 3 8 299 7.34 1.6 358.48 1.25N 30 15 0 55 6 34.7 2 32 8 8 299 7.53 1.6 358.48 1.25N 30 30 0 54 59 2.4 2 32 13 7 299 7.73 1.6 358.49 1.26N 30 45 0 54 51 30.3 2 32 17 7 299 7.94 1.6 358.49 1.26N 31 0 0 54 43 59.0 2 32 21 7 299 8.17 1.6 358.49 1.26N 31 15 0 54 36 27.1 2 32 26 7 300 8.41 1.6 358.50 1.27N 31 30 0 54 28 55.4 2 32 30 7 300 8.66 1.6 358.50 1.27N 31 45 0 54 21 23.9 2 32 34 6 300 8.93 1.6 358.51 1.28N 32 0 0 54 13 52.5 2 32 38 6 300 9.22 1.6 358.51 1.28N 32 15 0 54 6 21.4 2 32 41 6 301 9.53 1.7 358.51 1.29N 32 30 0 53 58 50.5 2 32 45 6 301 9.85 1.7 358.52 1.29N 32 45 0 53 51 19.9 2 32 48 6 301 10.21 1.7 358.52 1.29N 33 0 0 53 43 49.6 2 32 52 5 301 10.58 1.7 358.52 1.30N 33 15 0 53 36 19.7 2 32 55 5 301 10.99 1.7 358.53 1.30N 33 30 0 53 28 47.7 2 32 58 5 302 11.43 1.7 358.53 1.30N 33 45 0 53 21 18.2 2 33 1 5 302 11.91 1.7 358.53 1.30N 34 0 0 53 13 49.1 2 33 4 5 302 12.43 1.7 358.53 1.30N 34 15 0 53 6 20.4 2 33 7 4 302 13.00 1.7 358.53 1.31N 34 30 0 52 58 52.1 2 33 10 4 302 13.62 1.7 358.54 1.31N 34 45 0 52 51 24.1 2 33 13 4 303 14.30 1.7 358.54 1.31N 35 0 0 52 43 56.6 2 33 15 4 303 15.06 1.7 358.54 1.31N 35 15 0 52 36 29.6 2 33 17 4 303 15.90 1.7 358.54 1.31N 35 30 0 52 29 2.9 2 33 20 3 303 16.83 1.7 358.54 1.31N 35 45 0 52 21 36.8 2 33 22 3 304 17.89 1.7 358.54 1.31N 36 0 0 52 14 11.0 2 33 24 3 304 19.09 1.7 358.54 1.31N 36 15 0 52 6 45.7 2 33 26 3 304 20.46 1.7 358.54 1.32N 36 30 0 51 59 20.8 2 33 28 3 304 22.05 1.7 358.54 1.32N 36 45 0 51 51 56.3 2 33 29 2 304 23.90 1.7 358.54 1.32N 37 0 0 51 44 32.2 2 33 31 2 305 26.09 1.7 358.54 1.32N 37 15 0 51 37 8.6 2 33 32 2 305 28.72 1.7 358.54 1.32N 37 30 0 51 29 45.2 2 33 34 2 305 31.94 1.7 358.54 1.32N 37 45 0 51 22 22.2 2 33 35 2 305 35.99 1.7 358.54 1.31N 38 0 0 51 14 59.5 2 33 36 1 305 41.20 1.7 358.54 1.31N 38 15 0 51 7 37.0 2 33 37 1 306 48.19 1.7 358.54 1.31N 38 30 0 51 0 14.7 2 33 38 1 306 57.99 1.7 358.54 1.31N 38 45 0 50 52 52.3 2 33 39 1 306 72.87 1.7 358.54 1.31N 39 0 0 50 45 29.9 2 33 39 1 306 98.04 1.7 358.54 1.31N 39 15 0 50 38 7.3 2 33 40 0 306 99.00 1.7 358.54 1.31N 39 30 0 50 30 44.3 2 33 40 0 307 99.00 1.7 358.54 1.31N 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 37 meters [CHARM/CADARS, 12 measures] 946 is variable: 946 = eta Gem, 3.15 to 3.9, V, Type SRA+EA, Period 232.9 days, Phase 86% 946 is double: AB 3.5 6.2 1.6" 251.4 (BU 1008) Graze path of B approximately 1.7 km north, and 2.6 secs earlier compared to A - refer to graze profile for exact distances Librations Long -7.25 Lat +1.22 P +358.01 D -0.72 Illumination of moon 87%+ Elongation of Moon 137 Vertical Profile Scale approx. 3.08 km/arcsec at mean distance of moon Horizontal Scale Factor 2.12 deg/min At longitude 19.75: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -3.1 2.2 3.5 4.2 4.5 4.7 4.8 4.9 -1.1 2.2 3.5 4.2 4.5 4.7 4.8 4.9 0.9 2.2 3.5 4.2 4.5 4.7 4.8 4.9 2.9 2.3 3.6 4.2 4.5 4.7 4.8 4.9 4.9 3.9 5.2 5.9 6.3 6.5 6.6 6.7 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 06147+2231DBR 157 2001 2016 2 256 256 4.4 4.5 16.1 16.9 +039+009 061441.61+223111.1 06149+2230BU 1008 1881 2012 102 300 260 1.1 1.7 3.52 6.15 M3.5I-II -063-010 +22 1241 NO 061452.69+223024.6 ------------------------------------------------ Interferometric catalogue entries 061452.69+223024.6 ADS 4841 BU 1008AB HD 42995 HIP 29655 06149+22 Date PA Sep M1 M2 N O 1976.8604 263.8 0.2 1.584 0.010 . . . . 552 20 3.8 1 McA1978b S 1977.1799 269.4 . 1.601 . . . . . 552 20 2.1 1 McA1982b S 1991.25 260.6 . 1.705 . 3.382 0.014 6.070 0.149 511 222 0.3 1 HIP1997a H 1991.25 . . . . 3.55 . 6.25 0.01 505 97 0.3 1 Fab2000a H 1991.25 . . . . 5.49 . 7.46 0.01 435 70 0.3 1 Fab2000a H 1991.93 261.9 . 1.759 . 3.519 0.009 6.154 0.010 530 100 1.4 1 TYC2000a H 1991.93 . . . . 5.451 0.014 7.364 0.015 430 90 1.4 1 TYC2000a H 2004.241 258.5 0.3 1.765 0.022 . . . . 530 57 1.0 1 Sca2005a S 2005.111 257.2 0.3 1.703 0.012 . . . . 644 70 1.0 1 Sca2007a S 2006.128 256.2 2. 1.65 0.06 . . . . 700 200 1.0 1 Orl2007 S 2008.243 257.2 0.3 1.787 0.009 . . . . 530 57 1.0 1 Pru2010 S 061452.70+223024.6 eta Gem BU 1008A HD 42995 HIP 29655 06149+22 Date PA Sep M1 M2 N 1975.9566 . . < 0.033 . . . . . 517 20 3.8 1 McA1978c S 1977.0870 . . < 0.035 . . . . . 552 20 3.8 1 McA1978c S 1979.7709 . . < 0.033 . . . . . 470 3.8 1 McA1981b S 1982.1679 . . < 0.028 . . . . . 550 ? 3.6 1 Bag1984b S 1982.1706 . . < 0.028 . . . . . 550 ? 3.6 1 Bag1984b S 1983.9340 . . < 0.06 . . . . . 550 3 2.0 1 Bnu1984 S 1988.807 . . < 0.05 . . . . . 2.1 1 Iso1991 S 1988.8087 . . < 0.05 . . . . . 2.1 1 Iso1990b S 1988.8114 . . < 0.05 . . . . . 2.1 1 Iso1990b S ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period eta Gem SRA+EA 3.15 3.9 V 2437725.0000 232.9 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Ähtäri 24.1 62.6 330km 2 29 43.0 Ålesund 6.2 62.5 315km 2 18 42.3 Bodø 14.4 67.3 328km 2 24 13.4 Forssa 23.6 60.8 186km 2 29 29.8 Gävle 17.1 60.7 70km 2 25 54.9 Hämeenlinna 24.4 61.0 230km 2 29 52.4 Hämeenlinnanväylä 24.9 60.2 192km 2 30 5.5 Hamina 27.2 60.6 305km 2 31 3.9 Hartola 26.0 61.6 333km 2 30 34.9 Helsinki Kaivopuisto 25.0 60.2 188km 2 30 6.9 Imatra 28.8 61.2 413km 2 31 39.0 Jämsä 25.2 61.9 322km 2 30 13.0 Järvenpää 25.1 60.5 217km 2 30 10.6 Jönköping 14.0 57.8 440km 2 23 59.5 Jyväskylä Rihlaperä 25.7 62.2 367km 2 30 26.7 Kalajoki 23.9 64.3 438km 2 29 38.6 Kangasala 24.0 61.4 244km 2 29 40.4 Karstad 13.5 59.4 315km 2 23 38.8 Kaskinen 21.2 62.4 214km 2 28 16.3 Kaustinen 23.7 63.6 383km 2 29 31.6 Keljonlahdentie 25.7 62.2 366km 2 30 27.7 Kemiö 22.8 60.1 103km 2 29 4.5 Kokkola 23.1 63.8 382km 2 29 15.0 Kouvola 26.7 60.9 307km 2 30 51.0 Lahti Pirttiharju 25.6 61.0 274km 2 30 23.7 Laitila 21.7 60.9 118km 2 28 30.7 Lappeenranta 28.2 61.1 378km 2 31 26.3 Lapua 23.0 63.0 319km 2 29 11.3 Loimaa 23.1 60.8 167km 2 29 12.7 Loviisa 26.2 60.5 259km 2 30 40.0 Maarianhamina 19.9 60.1 8km 2 27 34.0 Mänttä 24.6 62.0 312km 2 29 57.8 Mäntyharju 26.9 61.4 354km 2 30 56.3 Merikarvia 21.5 61.9 185km 2 28 25.0 Mikkeli Kiiskinmäki 27.2 61.7 386km 2 31 4.8 Mora 14.5 61.0 139km 2 24 18.4 Orimattila Artjärvi Tähtikallio 26.2 60.7 279km 2 30 39.8 Oslo 10.8 59.9 377km 2 21 49.6 Parkano 23.0 62.0 252km 2 29 11.9 Pietari 30.1 59.9 371km 2 32 4.7 Pirkkola 24.9 60.2 192km 2 30 5.6 Pori 21.8 61.5 169km 2 28 34.4 Porvoo 25.7 60.4 234km 2 30 26.6 Rautalampi 26.7 62.6 427km 2 30 51.8 Riika 24.0 57.0 104km 2 29 41.2 Salo 23.1 60.4 135km 2 29 15.2 Seinäjoki 22.8 62.8 301km 2 29 6.6 Siuntio 24.2 60.2 160km 2 29 45.9 Skellfteå 20.9 64.8 367km 2 28 6.2 Stockholm 18.1 59.3 144km 2 26 28.8 Tallinna 24.8 59.4 122km 2 30 1.3 Tampere Kauppi 23.8 61.5 244km 2 29 34.4 Trondheim 10.4 63.4 85km 2 21 35.2 Turku Iso-Heikkilä 22.2 60.5 106km 2 28 47.8 Ulvila Vesitorni 21.9 61.4 169km 2 28 38.4 Umeå 20.3 63.8 282km 2 27 44.8 Uusikaarlepyy 22.5 63.5 340km 2 28 56.9 Vaasa Sundom 21.6 63.0 273km 2 28 27.4 Vantaa 25.0 60.3 201km 2 30 7.6 Varkaus 27.9 62.3 453km 2 31 19.5 Vihti 24.3 60.4 180km 2 29 49.5 Viitasaari 25.9 63.1 429km 2 30 30.7 Vilna 24.3 54.7 287km 2 29 49.4 Vimpeli 23.8 63.2 362km 2 29 35.3 Virrat 23.8 62.2 294km 2 29 34.2 Virsbo, Gammelby 16.1 59.9 176km 2 25 17.0