Grazing Occultation of 440SA2 Magnitude 4.7 [Red = 0.0] R440 = epsilon Arietis Date: 2025 Apr 01 3h 45m, to 2025 Apr 01 3h 52m Nominal site altitude 609.6m E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA o ' " o ' " h m s Alt Alt Az o o o -124 0 0 38 24 0.5 3 45 17 23 280 2.35 346.0 1.40 7.45N -123 45 0 38 20 11.9 3 45 26 23 280 2.38 346.1 1.44 7.48N -123 30 0 38 16 21.4 3 45 34 23 280 2.41 346.1 1.48 7.52N -123 15 0 38 12 29.2 3 45 43 22 280 2.43 346.1 1.52 7.56N -123 0 0 38 8 35.2 3 45 51 22 281 2.46 346.2 1.56 7.60N -122 45 0 38 4 39.4 3 45 59 22 281 2.49 346.2 1.60 7.64N -122 30 0 38 0 41.8 3 46 7 22 281 2.52 346.2 1.64 7.68N -122 15 0 37 56 42.5 3 46 15 21 281 2.55 346.3 1.67 7.72N -122 0 0 37 52 41.4 3 46 23 21 281 2.58 346.3 1.71 7.75N -121 45 0 37 48 38.5 3 46 31 21 281 2.61 346.4 1.75 7.79N -121 30 0 37 44 33.9 3 46 39 21 282 2.65 346.4 1.79 7.83N -121 15 0 37 40 27.6 3 46 46 20 282 2.68 346.4 1.82 7.87N -121 0 0 37 36 19.5 3 46 54 20 282 2.71 346.5 1.86 7.90N -120 45 0 37 32 9.7 3 47 1 20 282 2.75 346.5 1.90 7.94N -120 30 0 37 27 58.2 3 47 9 20 282 2.78 346.5 1.93 7.98N -120 15 0 37 23 45.1 3 47 16 20 283 2.82 346.6 1.97 8.01N -120 0 0 37 19 30.1 3 47 23 19 283 2.85 346.6 2.01 8.05N -119 45 0 37 15 13.5 3 47 30 19 283 2.89 346.7 2.04 8.08N -119 30 0 37 10 55.1 3 47 37 19 283 2.93 346.7 2.08 8.12N -119 15 0 37 6 35.1 3 47 44 19 283 2.97 346.7 2.11 8.15N -119 0 0 37 2 13.4 3 47 51 18 283 3.01 346.8 2.15 8.19N -118 45 0 36 57 50.0 3 47 58 18 284 3.05 346.8 2.18 8.22N -118 30 0 36 53 25.0 3 48 5 18 284 3.09 346.8 2.22 8.26N -118 15 0 36 48 58.3 3 48 11 18 284 3.14 346.9 2.25 8.29N -118 0 0 36 44 30.0 3 48 18 17 284 3.18 346.9 2.28 8.33N -117 45 0 36 40 0.1 3 48 24 17 284 3.23 346.9 2.32 8.36N -117 30 0 36 35 28.5 3 48 31 17 284 3.28 347.0 2.35 8.39N -117 15 0 36 30 55.3 3 48 37 17 285 3.32 347.0 2.38 8.43N -117 0 0 36 26 20.5 3 48 43 17 285 3.37 347.0 2.42 8.46N -116 45 0 36 21 44.1 3 48 49 16 285 3.43 347.1 2.45 8.49N -116 30 0 36 17 6.1 3 48 55 16 285 3.48 347.1 2.48 8.53N -116 15 0 36 12 26.5 3 49 1 16 285 3.53 347.1 2.52 8.56N -116 0 0 36 7 45.3 3 49 7 16 285 3.59 347.2 2.55 8.59N -115 45 0 36 3 2.5 3 49 13 15 286 3.65 347.2 2.58 8.62N -115 30 0 35 58 18.2 3 49 19 15 286 3.71 347.2 2.61 8.65N -115 15 0 35 53 32.3 3 49 24 15 286 3.77 347.3 2.64 8.69N -115 0 0 35 48 44.9 3 49 30 15 286 3.83 347.3 2.67 8.72N -114 45 0 35 43 55.6 3 49 35 14 286 3.90 347.3 2.71 8.75N -114 30 0 35 39 5.0 3 49 40 14 286 3.96 347.3 2.74 8.78N -114 15 0 35 34 13.0 3 49 46 14 287 4.03 347.4 2.77 8.81N -114 0 0 35 29 19.5 3 49 51 14 287 4.11 347.4 2.80 8.84N -113 45 0 35 24 24.4 3 49 56 13 287 4.18 347.4 2.83 8.87N -113 30 0 35 19 27.9 3 50 1 13 287 4.26 347.5 2.86 8.90N -113 15 0 35 14 29.9 3 50 6 13 287 4.34 347.5 2.89 8.93N -113 0 0 35 9 30.4 3 50 10 13 287 4.42 347.5 2.92 8.96N -112 45 0 35 4 29.4 3 50 15 13 288 4.51 347.6 2.95 8.99N -112 30 0 34 59 27.0 3 50 20 12 288 4.59 347.6 2.97 9.02N -112 15 0 34 54 23.1 3 50 24 12 288 4.69 347.6 3.00 9.05N -112 0 0 34 49 17.8 3 50 28 12 288 4.78 347.6 3.03 9.08N -111 45 0 34 44 11.1 3 50 33 12 288 4.88 347.7 3.06 9.10N -111 30 0 34 39 2.9 3 50 37 11 288 4.99 347.7 3.09 9.13N -111 15 0 34 33 53.4 3 50 41 11 288 5.10 347.7 3.12 9.16N -111 0 0 34 28 42.4 3 50 45 11 289 5.21 347.8 3.14 9.19N -110 45 0 34 23 30.0 3 50 49 11 289 5.33 347.8 3.17 9.22N -110 30 0 34 18 16.3 3 50 53 10 289 5.45 347.8 3.20 9.24N -110 15 0 34 13 1.2 3 50 57 10 289 5.58 347.8 3.23 9.27N -110 0 0 34 7 44.7 3 51 0 10 289 5.72 347.9 3.25 9.30N -109 45 0 34 2 26.8 3 51 4 10 289 5.86 347.9 3.28 9.32N -109 30 0 33 57 7.7 3 51 7 9 290 6.01 347.9 3.31 9.35N -109 15 0 33 51 47.2 3 51 11 9 290 6.17 347.9 3.33 9.38N -109 0 0 33 46 25.3 3 51 14 9 290 6.33 348.0 3.36 9.40N -108 45 0 33 41 2.2 3 51 17 9 290 6.51 348.0 3.38 9.43N -108 30 0 33 35 37.7 3 51 20 8 290 6.69 348.0 3.41 9.45N -108 15 0 33 30 12.0 3 51 23 8 290 6.89 348.0 3.43 9.48N -108 0 0 33 24 45.0 3 51 26 8 290 7.09 348.1 3.46 9.50N -107 45 0 33 19 16.7 3 51 29 8 291 7.31 348.1 3.48 9.53N -107 30 0 33 13 47.1 3 51 31 8 291 7.54 348.1 3.51 9.55N -107 15 0 33 8 16.3 3 51 34 7 291 7.79 348.1 3.53 9.58N -107 0 0 33 2 44.2 3 51 37 7 291 8.05 348.2 3.56 9.60N -106 45 0 32 57 10.9 3 51 39 7 291 8.34 348.2 3.58 9.63N -106 30 0 32 51 36.4 3 51 41 7 291 8.64 348.2 3.61 9.65N -106 15 0 32 46 0.6 3 51 44 6 291 8.96 348.2 3.63 9.67N -106 0 0 32 40 23.6 3 51 46 6 292 9.31 348.3 3.65 9.70N -105 45 0 32 34 45.5 3 51 48 6 292 9.69 348.3 3.67 9.72N -105 30 0 32 29 6.2 3 51 50 6 292 10.10 348.3 3.70 9.74N -105 15 0 32 23 25.7 3 51 51 5 292 10.54 348.3 3.72 9.77N -105 0 0 32 17 44.0 3 51 53 5 292 11.03 348.4 3.74 9.79N -104 45 0 32 12 1.1 3 51 55 5 292 11.56 348.4 3.77 9.81N -104 30 0 32 6 17.2 3 51 56 5 292 12.14 348.4 3.79 9.83N -104 15 0 32 0 32.1 3 51 58 4 293 12.79 348.4 3.81 9.85N -104 0 0 31 54 45.8 3 51 59 4 293 13.51 348.4 3.83 9.88N -103 45 0 31 48 58.4 3 52 0 4 293 14.32 348.5 3.85 9.90N -103 30 0 31 43 9.0 3 52 2 4 293 15.22 348.5 3.87 9.92N -103 15 0 31 37 19.2 3 52 3 4 293 16.25 348.5 3.89 9.94N -103 0 0 31 31 28.4 3 52 4 3 293 17.43 348.5 3.91 9.96N -102 45 0 31 25 36.5 3 52 5 3 293 18.79 348.5 3.93 9.98N -102 30 0 31 19 43.4 3 52 5 3 293 20.38 348.6 3.95 10.00N -102 15 0 31 13 49.2 3 52 6 3 294 22.26 348.6 3.97 10.02N -102 0 0 31 7 54.6 3 52 7 2 294 24.54 348.6 3.99 10.04N -101 45 0 31 1 58.3 3 52 7 2 294 27.32 348.6 4.01 10.06N -101 30 0 30 56 0.8 3 52 8 2 294 30.82 348.6 4.03 10.08N -101 15 0 30 50 2.3 3 52 8 2 294 35.34 348.7 4.05 10.09N -101 0 0 30 44 2.6 3 52 8 1 294 41.42 348.7 4.07 10.11N -100 45 0 30 38 1.8 3 52 8 1 294 50.02 348.7 4.08 10.13N -100 30 0 30 31 59.8 3 52 9 1 294 63.13 348.7 4.10 10.15N 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. 440 is triple: Graze prediction is based on the mean position of AB 5.17 5.57 1.28" 210.5 (STF 333) Graze path of A approximately 0.8 km south, and 0.6 secs later compared to prediction Graze path of B approximately 1.1 km north, and 0.9 secs earlier compared to prediction - refer to graze profile for exact distances AB 5.17 5.57 1.28" 210.5 (STF 333) Graze path of B approximately 1.9 km north, and 1.5 secs earlier compared to A - refer to graze profile for exact distances AC 5.2 12.7 146" 192.0 (STF 333) Graze path of C approximately 269.9 km north, and 100.7 secs earlier compared to A - refer to graze profile for exact distances Librations Long +2.19 Lat -5.11 P +2.81 D +5.48 Illumination of moon 10%+ Elongation of Moon 37 Vertical Profile Scale approx. 1.91 km/arcsec at mean distance of moon Horizontal Scale Factor 2.07 deg/min At longitude -112.25: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 5.0 5.2 6.6 7.3 7.8 8.1 8.3 8.5 7.0 5.2 6.6 7.4 7.8 8.1 8.4 8.5 9.0 5.2 6.7 7.4 7.9 8.2 8.4 8.6 11.0 6.3 7.7 8.6 9.1 9.5 9.7 10.0 13.0 6.3 7.8 8.6 9.1 9.5 9.8 10.0 ------------------------------------------------------------------------------ Double star catalogue details WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 02592+2120STF 333AB 1827 2023 469 186 211 0.5 1.3 5.17 5.57 A2Vs+A2Vs -009-005 -009-005 +20 484 NO 025912.73+212025.6 02592+2120STF 333AC 1896 2000 5 192 192 144.9 145.6 5.17 12.7 A2Vs -013-007 -015+000 +20 484 N 025912.73+212025.6 ------------------------------------------------ Interferometric catalogue entries 025912.73+212025.6 ADS 2257 STF 333AB HD 18519-0 HIP 13914 02592+2120 N Date PA Sep M1 M2 1971.7643 V . . . . . . . . . 1 deV1976 O 1972.8876 V279.8 . 0.458 0.001 . . 0.6 0.2 n . 1 Dnh1973 O 1973.0376 V285.5 . 0.045 0.001 . . . . . 1 Dnh1973 O 1973.0376 V259. . 1.0435 0.012 . . 0.42 0.08 550 98 3.8 1 Bvr1977 O 1973.0376 . . . . . . 0.45 0.08 720 166 3.8 1 Bvr1977 O 1978.6182 207.1 0.1 1.492 0.010 . . . . 470 3.8 1 McA1980b Sc 1979.7733 207.2 . 1.490 . . . . . 470 3.8 1 McA1982d Sc 1980.7235 206.7 . 1.488 . . . . . 470 3.8 1 McA1983 Sc 1981.6982 206.5 . 1.483 . . . . . 470 3.8 1 McA1984a Sc 1982.7550 207.3 . 1.474 . . . . . 549 22 3.8 1 McA1987b Sc 1982.7577 207.3 . 1.476 . . . . . 549 22 3.8 1 McA1987b Sc 1983.0635 207.5 . 1.474 . . . . . 549 22 3.8 1 McA1987b Sc 1984.7070 208.3 . 1.474 . . . . . 549 22 3.8 1 McA1987b Sc 1984.9967 208.3 . 1.463 . . . . . 549 22 3.8 1 McA1987b Sc 1985.8350 207.8 . 1.459 . . . . . 549 22 3.8 1 McA1987b Sc 1986.8943 207.5 . 1.459 . . . . . 549 22 3.8 1 McA1989 Sc 1989.7065 208.3 . 1.463 . . . . . 549 22 3.8 1 Hrt1992b Sc 1991.25 208.1 . 1.453 . 5.244 0.005 5.592 0.007 511 222 0.3 1 HIP1997a Hh 1991.25 . . . . 5.24 . 5.58 0.01 505 97 0.3 1 Fab2000a Hh 1991.25 . . . . 5.30 . 5.65 0.01 435 70 0.3 1 Fab2000a Hh 1991.70 208.5 . 1.464 . 5.169 0.009 5.566 0.009 530 100 1.4 1 TYC2000a Ht 1991.70 . . . . 5.227 0.014 5.617 0.014 430 90 1.4 1 TYC2000a Ht 1991.8964 208.0 . 1.460 . . . . . 549 22 3.8 1 Hrt1994 Sc 1991.941 208.3 . 1.46 G . . . 0.3 . 547 24 0.7 1 WSI1997 Su 1992.075 208.5 . 1.47 G . . . . . 547 24 0.7 1 WSI1997 Su 1992.092 208.5 . 1.47 G . . . . . 547 24 0.7 1 WSI1997 Su 1992.097 208.3 . 1.46 G . . . . . 547 24 0.7 1 WSI1997 Su 1992.100 208.5 . 1.46 G . . . . . 547 24 0.7 1 WSI1997 Su 1992.111 208.1 . 1.47 G . . . . . 547 24 0.7 1 WSI1997 Su 1993.091 208.9 . 1.45 F . 5.2 . 5.5 . 550 24 0.7 1 WSI1999a Su 1993.113 207.6 . 1.46 G . . . . . 550 24 0.7 1 WSI1999a Su 1994.918 207.7 . 1.44 G . . . . . 550 24 0.7 1 WSI1999a Su 1994.937 207.4 . 1.42 G . . . . . 550 24 0.7 1 WSI1999a Su 1994.969 207.8 . 1.45 G . . . . . 550 24 0.7 1 WSI1999a Su 1995.682 207.4 . 1.42 G . 5.2 . 5.5 . 550 24 0.7 1 WSI1999b Su 1995.7628 208.6 . 1.435 . . . . . 549 22 2.5 1 Hrt1997 Sc 1995.9291 208.3 . 1.440 . . . . . 538 76 2.5 1 Hrt1997 Sc 1996.998 207.6 . 1.43 F . . . . . 550 24 0.7 1 WSI1999b Su 1997.039 208.4 . 1.41 G . . . . . 550 24 0.7 1 WSI1999c Su 1997.058 208.5 . 1.41 G . . . . . 550 24 0.7 1 WSI1999c Su 1997.102 208.1 . 1.42 G . . . . . 550 24 0.7 1 WSI1999c Su 1997.8243 209.0 . 1.440 . . . . . 501 8 3.5 1 Hor1999 S 1997.8243 209.0 . 1.434 . . . . . 501 8 3.5 1 Hor1999 S 1997.8243 209.0 . 1.442 . . . . . 501 8 3.5 1 Hor1999 S 1997.8297 208.7 . 1.400 . . . . . 701 12 3.5 1 Hor1999 S 1997.8297 208.7 . 1.402 . . . . . 551 10 3.5 1 Hor1999 S 1998.882 208.8 . 1.43 G . . . . . 550 24 0.7 1 WSI2000a Su 1998.909 208.9 . 1.40 G . . . . . 550 24 0.7 2 WSI2000a Su 1998.918 208.7 . 1.40 G . . . . . 550 24 0.7 1 WSI2000a Su 1998.964 208.7 . 1.39 G . . . . . 550 24 0.7 1 WSI2000a Su 1999.8177 208.5 . 1.417 . . . . . 550 24 2.1 1 Msn2001b Su 2002.886 209.0 . 1.37 . . . . . 550 24 0.7 2 WSI2004a Su 2004.9565 208.1 1. 1.40 0.01 . . 0.38 0.02 880 155 3.6 1 Rbr2018 A 2005.103 209.2 0.3 1.426 0.010 . . . . 644 70 1.0 1 Sca2007a S 2010.7 195.6 4.5 1.48 0.05 . . . . . 2 OCC2012b O 2007.839 212.2 . 1.35 . . . . . 500 0.2 1 Cli2008 S 2008.885 208.61 . 1.4 . . . . . 500 1.5 1 CTr2009 S 2010.050 209.5 0.3 1.398 0.008 . . . . 644 70 1.0 1 Pru2012 S 2010.664 209.5 0.0 1.384 0.000 . . 0.36 0.02 780 10 3.5 3 Dru2014 A 2012.8879 209.9 . 1.381 . . . . . 550 89 0.5 1 GnR2015a S ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Alamogordo NM -106.0 32.9 26km 3 51 45.5 Apache Point Obs NM -105.8 32.8 16km 3 51 46.5 Bakersfield CA -119.0 35.4 174km 3 47 50.1 Berkeley CA -122.3 37.9 9km 3 46 13.8 Carefree AZ -112.0 33.8 102km 3 50 28.7 Carson City NV -119.8 39.2 198km 3 47 29.3 CiudadJuarez MX -106.5 31.7 117km 3 51 40.9 Davis CA -121.8 38.6 76km 3 46 29.3 El Paso TX -106.5 31.8 111km 3 51 40.9 Flagstaff AZ -111.7 35.2 50km 3 50 33.8 Florence AZ -111.4 33.0 163km 3 50 38.8 Fort Davis TX -104.0 30.7 127km 3 51 58.6 Fountain Hills AZ -111.7 33.6 113km 3 50 32.5 Fresno CA -119.8 36.7 55km 3 47 28.7 Gallup NM -108.7 35.5 187km 3 51 16.6 Gilbert AZ -111.7 33.4 141km 3 50 32.4 Kingman AZ -113.9 35.4 3km 3 49 52.9 Las Cruces NM -106.7 32.3 62km 3 51 38.6 Las Vegas NV -115.1 36.2 32km 3 49 26.0 Livermore CA -121.7 37.7 15km 3 46 30.4 Magdalena NM -107.2 34.1 103km 3 51 33.6 Monterey Calif -121.9 36.7 122km 3 46 27.1 Oakland CA -122.3 37.8 16km 3 46 14.0 Payson AZ -111.3 34.2 36km 3 50 39.2 Phoenix AZ -112.1 33.5 143km 3 50 26.5 Quartzsite AZ -114.3 33.7 198km 3 49 45.0 Sacramento CA -121.5 38.6 88km 3 46 38.1 San Jose CA -121.9 37.3 54km 3 46 25.8 SanFrancisco CA -122.4 37.8 22km 3 46 9.3 Santa Cruz CA -122.0 37.0 96km 3 46 21.7 Stockton CA -121.3 38.0 28km 3 46 44.4