IOTA/IOTA-ES occultation update for (511) Davida / TYC 1964-00787-1 event on 2009 Feb 06, 05:53 UT Visible from Summary ------- On 2009 Feb 06 UT, the 326 km diameter asteroid (511) Davida will occult a 11.7 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 0.2 mag to 10.1 mag (the magnitude of the asteroid) for at most 25.7 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2009 Feb 06, 05:44 - 2009 Feb 06, 06:01 UT * magnitude of target star: 11.7 * magnitude drop [mag]: 0.2 * estimated maximum duration [s]: 25.7 * Moon: 84 % sunlit, 53° distance * Sun: 165° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 328 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .030 +/- .024) * 1 sigma uncertainty ellipse (major, minor, PA): ( .030", .024", 95° ) * approx speed of asteroid's shadow [km/s]: 12.6966 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1964-00787-1 by 511 Davida on 2009 Feb 6 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Longitude Longitude Longitude Longitude - 3 48 48 -30 0 0 5 44 50 4 304 -2 - 0 42 22 - 6 46 42 - 0 3 54 - 7 21 24 - 5 28 31 -29 0 0 5 44 51 5 304 -3 - 2 28 50 - 8 20 42 - 1 51 52 - 8 54 22 - 7 3 52 -28 0 0 5 44 53 7 305 -5 - 4 10 9 - 9 50 58 - 3 34 30 - 10 23 41 - 8 35 20 -27 0 0 5 44 55 9 306 -7 - 5 46 54 - 11 17 52 - 5 12 25 - 11 49 45 - 10 3 19 -26 0 0 5 44 57 10 307 -8 - 7 19 37 - 12 41 44 - 6 46 9 - 13 12 52 - 11 28 9 -25 0 0 5 45 0 12 307 -10 - 8 48 42 - 14 2 51 - 8 16 10 - 14 33 17 - 12 50 9 -24 0 0 5 45 3 13 308 -11 - 10 14 32 - 15 21 28 - 9 42 50 - 15 51 16 - 14 9 34 -23 0 0 5 45 6 15 308 -13 - 11 37 25 - 16 37 48 - 11 6 28 - 17 7 2 - 15 26 38 -22 0 0 5 45 10 17 309 -14 - 12 57 39 - 17 52 3 - 12 27 23 - 18 20 45 - 16 41 32 -21 0 0 5 45 14 18 309 -16 - 14 15 27 - 19 4 23 - 13 45 47 - 19 32 36 - 17 54 29 -20 0 0 5 45 18 20 310 -17 - 15 31 1 - 20 14 58 - 15 1 56 - 20 42 44 - 19 5 37 -19 0 0 5 45 23 21 310 -18 - 16 44 34 - 21 23 56 - 16 16 0 - 21 51 18 - 20 15 6 -18 0 0 5 45 27 23 310 -20 - 17 56 16 - 22 31 25 - 17 28 10 - 22 58 24 - 21 23 3 -17 0 0 5 45 32 24 311 -21 - 19 6 15 - 23 37 32 - 18 38 35 - 24 4 11 - 22 29 36 -16 0 0 5 45 38 25 311 -23 - 20 14 40 - 24 42 24 - 19 47 23 - 25 8 43 - 23 34 51 -15 0 0 5 45 43 27 311 -24 - 21 21 38 - 25 46 6 - 20 54 43 - 26 12 8 - 24 38 55 -14 0 0 5 45 49 28 311 -25 - 22 27 16 - 26 48 44 - 22 0 41 - 27 14 30 - 25 41 53 -13 0 0 5 45 55 30 311 -27 - 23 31 40 - 27 50 24 - 23 5 24 - 28 15 55 - 26 43 50 -12 0 0 5 46 1 31 312 -28 - 24 34 57 - 28 51 9 - 24 8 58 - 29 16 27 - 27 44 51 -11 0 0 5 46 8 32 312 -29 - 25 37 11 - 29 51 5 - 25 11 27 - 30 16 10 - 28 45 1 -10 0 0 5 46 14 34 312 -31 - 26 38 28 - 30 50 15 - 26 12 58 - 31 15 9 - 29 44 25 - 9 0 0 5 46 21 35 312 -32 - 27 38 51 - 31 48 44 - 27 13 35 - 32 13 28 - 30 43 5 - 8 0 0 5 46 28 37 312 -33 - 28 38 26 - 32 46 35 - 28 13 22 - 33 11 10 - 31 41 6 - 7 0 0 5 46 36 38 312 -34 - 29 37 17 - 33 43 53 - 29 12 23 - 34 8 19 - 32 38 32 - 6 0 0 5 46 43 39 312 -36 - 30 35 27 - 34 40 39 - 30 10 43 - 35 4 58 - 33 35 26 - 5 0 0 5 46 51 41 312 -37 - 31 33 1 - 35 36 58 - 31 8 24 - 36 1 11 - 34 31 50 - 4 0 0 5 46 59 42 312 -38 - 32 30 0 - 36 32 53 - 32 5 32 - 36 57 0 - 35 27 50 - 3 0 0 5 47 7 43 312 -39 - 33 26 30 - 37 28 26 - 33 2 8 - 37 52 29 - 36 23 26 - 2 0 0 5 47 15 45 312 -40 - 34 22 33 - 38 23 40 - 33 58 16 - 38 47 39 - 37 18 43 - 1 0 0 5 47 23 46 312 -42 - 35 18 11 - 39 18 39 - 34 54 0 - 39 42 35 - 38 13 43 0 0 0 5 47 32 47 312 -43 - 36 13 29 - 40 13 25 - 35 49 22 - 40 37 19 - 39 8 29 1 0 0 5 47 40 49 311 -44 - 37 8 29 - 41 8 1 - 36 44 25 - 41 31 53 Latitude Latitude Latitude Latitude - 41 0 0 3 2 47 5 47 58 51 311 -46 5 15 7 0 51 10 5 41 42 0 24 55 - 42 0 0 4 9 4 5 48 9 53 311 -48 6 21 37 1 57 15 6 48 14 1 30 57 - 43 0 0 5 15 25 5 48 19 54 310 -49 7 28 8 3 3 26 7 54 47 2 37 7 - 44 0 0 6 21 46 5 48 29 56 310 -50 8 34 37 4 9 41 9 1 17 3 43 20 - 45 0 0 7 28 4 5 48 40 57 309 -51 9 40 59 5 15 54 10 7 41 4 49 33 - 46 0 0 8 34 15 5 48 51 58 309 -53 10 47 13 6 22 3 11 13 55 5 55 41 - 47 0 0 9 40 14 5 49 2 60 308 -54 11 53 12 7 28 4 12 19 55 7 1 42 - 48 0 0 10 45 59 5 49 13 61 307 -55 12 58 54 8 33 52 13 25 36 8 7 31 - 49 0 0 11 51 26 5 49 24 63 307 -56 14 4 15 9 39 24 14 30 56 9 13 5 - 50 0 0 12 56 30 5 49 35 64 306 -57 15 9 12 10 44 37 15 35 51 10 18 19 - 51 0 0 14 1 9 5 49 47 65 305 -58 16 13 41 11 49 27 16 40 18 11 23 12 - 52 0 0 15 5 20 5 49 58 67 304 -59 17 17 38 12 53 51 17 44 12 12 27 38 - 53 0 0 16 8 58 5 50 9 68 303 -60 18 21 0 13 57 45 18 47 32 13 31 35 - 54 0 0 17 12 1 5 50 21 69 301 -61 19 23 46 15 1 6 19 50 14 14 35 0 - 55 0 0 18 14 26 5 50 32 71 300 -62 20 25 50 16 3 51 20 52 14 15 37 49 - 56 0 0 19 16 10 5 50 44 72 298 -63 21 27 12 17 5 57 21 53 31 16 40 0 - 57 0 0 20 17 10 5 50 55 73 296 -64 22 27 47 18 7 22 22 54 2 17 41 30 - 58 0 0 21 17 24 5 51 6 74 294 -64 23 27 35 19 8 3 23 53 44 18 42 16 - 59 0 0 22 16 50 5 51 18 76 292 -65 24 26 32 20 7 58 24 52 36 19 42 16 - 60 0 0 23 15 25 5 51 29 77 289 -66 25 24 37 21 7 4 25 50 34 20 41 28 - 61 0 0 24 13 8 5 51 40 78 286 -66 26 21 48 22 5 19 26 47 38 21 39 50 - 62 0 0 25 9 57 5 51 51 79 282 -67 27 18 2 23 2 42 27 43 46 22 37 19 - 63 0 0 26 5 50 5 52 2 80 277 -67 28 13 20 23 59 10 28 38 56 23 33 55 - 64 0 0 27 0 46 5 52 13 81 272 -68 29 7 38 24 54 43 29 33 7 24 29 35 - 65 0 0 27 54 44 5 52 24 82 265 -68 30 0 57 25 49 19 30 26 19 25 24 19 - 66 0 0 28 47 42 5 52 34 82 257 -68 30 53 15 26 42 57 31 18 29 26 18 4 - 67 0 0 29 39 40 5 52 45 83 248 -68 31 44 32 27 35 35 32 9 37 27 10 51 - 68 0 0 30 30 37 5 52 55 83 238 -69 32 34 46 28 27 14 32 59 43 28 2 38 - 69 0 0 31 20 32 5 53 5 83 228 -69 33 23 58 29 17 51 33 48 46 28 53 24 - 70 0 0 32 9 25 5 53 15 83 217 -69 34 12 7 30 7 28 34 36 45 29 43 9 - 71 0 0 32 57 15 5 53 25 83 207 -69 34 59 12 30 56 3 35 23 42 30 31 53 - 72 0 0 33 44 3 5 53 35 82 198 -68 35 45 14 31 43 35 36 9 35 31 19 34 - 73 0 0 34 29 48 5 53 45 82 190 -68 36 30 13 32 30 6 36 54 24 32 6 14 - 74 0 0 35 14 31 5 53 54 81 183 -68 37 14 9 33 15 35 37 38 11 32 51 52 - 75 0 0 35 58 11 5 54 4 81 177 -68 37 57 2 34 0 1 38 20 54 33 36 27 - 76 0 0 36 40 49 5 54 13 80 172 -67 38 38 53 34 43 26 39 2 35 34 20 1 - 77 0 0 37 22 25 5 54 22 79 168 -67 39 19 41 35 25 49 39 43 14 35 2 34 - 78 0 0 38 3 0 5 54 31 78 165 -67 39 59 28 36 7 10 40 22 52 35 44 5 - 79 0 0 38 42 34 5 54 39 77 162 -66 40 38 14 36 47 31 41 1 28 36 24 35 - 80 0 0 39 21 7 5 54 48 76 159 -66 41 16 0 37 26 52 41 39 4 37 4 5 - 81 0 0 39 58 41 5 54 56 76 156 -65 41 52 47 38 5 13 42 15 41 37 42 35 - 82 0 0 40 35 16 5 55 4 75 154 -65 42 28 34 38 42 34 42 51 19 38 20 5 - 83 0 0 41 10 53 5 55 12 74 152 -64 43 3 24 39 18 57 43 25 59 38 56 38 - 84 0 0 41 45 32 5 55 20 73 150 -64 43 37 16 39 54 22 43 59 41 39 32 12 - 85 0 0 42 19 14 5 55 28 72 148 -63 44 10 12 40 28 51 44 32 28 40 6 49 - 86 0 0 42 52 1 5 55 35 71 147 -63 44 42 12 41 2 23 45 4 19 40 40 31 - 87 0 0 43 23 53 5 55 43 71 145 -62 45 13 19 41 35 0 45 35 16 41 13 16 - 88 0 0 43 54 51 5 55 50 70 144 -62 45 43 31 42 6 42 46 5 20 41 45 7 - 89 0 0 44 24 55 5 55 57 69 142 -61 46 12 51 42 37 30 46 34 31 42 16 4 - 90 0 0 44 54 7 5 56 4 68 141 -60 46 41 19 43 7 26 47 2 50 42 46 8 - 91 0 0 45 22 28 5 56 11 67 140 -60 47 8 57 43 36 29 47 30 19 43 15 20 - 92 0 0 45 49 59 5 56 17 67 139 -59 47 35 45 44 4 42 47 56 58 43 43 41 - 93 0 0 46 16 40 5 56 24 66 138 -59 48 1 44 44 32 4 48 22 48 44 11 12 - 94 0 0 46 42 32 5 56 30 65 136 -58 48 26 55 44 58 37 48 47 51 44 37 53 - 95 0 0 47 7 37 5 56 37 64 135 -58 48 51 19 45 24 22 49 12 7 45 3 45 - 96 0 0 47 31 55 5 56 43 64 134 -57 49 14 57 45 49 19 49 35 37 45 28 50 - 97 0 0 47 55 27 5 56 49 63 133 -56 49 37 50 46 13 29 49 58 22 45 53 8 - 98 0 0 48 18 14 5 56 55 62 132 -56 49 59 59 46 36 53 50 20 24 46 16 40 - 99 0 0 48 40 16 5 57 0 61 131 -55 50 21 24 46 59 33 50 41 42 46 39 27 -100 0 0 49 1 36 5 57 6 61 130 -55 50 42 8 47 21 28 51 2 17 47 1 29 -101 0 0 49 22 13 5 57 12 60 129 -54 51 2 9 47 42 41 51 22 12 47 22 49 -102 0 0 49 42 9 5 57 17 59 128 -53 51 21 30 48 3 10 51 41 25 47 43 25 -103 0 0 50 1 23 5 57 22 58 127 -53 51 40 10 48 22 58 51 59 59 48 3 20 -104 0 0 50 19 58 5 57 28 58 126 -52 51 58 12 48 42 5 52 17 54 48 22 33 -105 0 0 50 37 53 5 57 33 57 125 -52 52 15 35 49 0 32 52 35 11 48 41 6 -106 0 0 50 55 9 5 57 38 56 124 -51 52 32 21 49 18 19 52 51 50 48 59 0 -107 0 0 51 11 48 5 57 43 56 123 -51 52 48 29 49 35 28 53 7 52 49 16 14 -108 0 0 51 27 50 5 57 48 55 122 -50 53 4 2 49 51 59 53 23 19 49 32 50 -109 0 0 51 43 15 5 57 53 54 122 -49 53 18 58 50 7 52 53 38 10 49 48 49 -110 0 0 51 58 4 5 57 57 54 121 -49 53 33 20 50 23 8 53 52 26 50 4 11 -111 0 0 52 12 18 5 58 2 53 120 -48 53 47 8 50 37 49 54 6 8 50 18 56 -112 0 0 52 25 58 5 58 6 53 119 -48 54 0 21 50 51 53 54 19 17 50 33 6 -113 0 0 52 39 3 5 58 11 52 118 -47 54 13 2 51 5 23 54 31 52 50 46 41 -114 0 0 52 51 35 5 58 15 51 117 -47 54 25 10 51 18 19 54 43 56 50 59 41 -115 0 0 53 3 35 5 58 19 51 116 -46 54 36 47 51 30 41 54 55 28 51 12 8 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19 50 5 59 59 34 91 -31 56 48 31 53 51 24 57 6 18 53 33 44 -145 0 0 55 17 46 6 0 2 33 90 -30 56 46 31 53 49 15 57 4 18 53 31 34 -146 0 0 55 15 14 6 0 5 33 90 -30 56 44 4 53 46 39 57 1 52 53 28 57 -147 0 0 55 12 15 6 0 7 32 89 -29 56 41 11 53 43 34 56 59 1 53 25 51 -148 0 0 55 8 50 6 0 10 32 88 -29 56 37 53 53 40 2 56 55 43 53 22 18 -149 0 0 55 4 57 6 0 13 31 87 -28 56 34 7 53 36 2 56 52 0 53 18 16 -150 0 0 55 0 37 6 0 15 31 86 -28 56 29 56 53 31 33 56 47 50 53 13 45 -151 0 0 54 55 49 6 0 18 30 85 -27 56 25 18 53 26 36 56 43 13 53 8 46 -152 0 0 54 50 34 6 0 20 29 85 -27 56 20 12 53 21 9 56 38 10 53 3 18 -153 0 0 54 44 50 6 0 23 29 84 -26 56 14 40 53 15 14 56 32 40 52 57 21 -154 0 0 54 38 38 6 0 25 28 83 -26 56 8 40 53 8 50 56 26 43 52 50 54 -155 0 0 54 31 57 6 0 28 28 82 -25 56 2 13 53 1 56 56 20 18 52 43 57 -156 0 0 54 24 47 6 0 30 27 81 -25 55 55 17 52 54 32 56 13 25 52 36 30 -157 0 0 54 17 7 6 0 32 27 80 -24 55 47 53 52 46 38 56 6 4 52 28 33 -158 0 0 54 8 58 6 0 35 26 80 -23 55 40 0 52 38 12 55 58 14 52 20 5 -159 0 0 54 0 19 6 0 37 25 79 -23 55 31 38 52 29 16 55 49 55 52 11 5 -160 0 0 53 51 9 6 0 39 25 78 -22 55 22 46 52 19 49 55 41 7 52 1 34 -161 0 0 53 41 29 6 0 42 24 77 -22 55 13 24 52 9 49 55 31 49 51 51 31 -162 0 0 53 31 16 6 0 44 24 76 -21 55 3 32 51 59 17 55 22 1 51 40 55 -163 0 0 53 20 32 6 0 46 23 76 -21 54 53 8 51 48 12 55 11 42 51 29 45 -164 0 0 53 9 15 6 0 48 22 75 -20 54 42 14 51 36 33 55 0 52 51 18 2 -165 0 0 52 57 25 6 0 50 22 74 -19 54 30 47 51 24 21 54 49 29 51 5 45 -166 0 0 52 45 2 6 0 52 21 73 -19 54 18 47 51 11 33 54 37 35 50 52 53 -167 0 0 52 32 4 6 0 54 20 72 -18 54 6 15 50 58 11 54 25 7 50 39 26 -168 0 0 52 18 32 6 0 56 20 72 -18 53 53 8 50 44 12 54 12 6 50 25 22 -169 0 0 52 4 24 6 0 58 19 71 -17 53 39 27 50 29 38 53 58 30 50 10 42 -170 0 0 51 49 39 6 1 0 18 70 -16 53 25 11 50 14 25 53 44 20 49 55 24 -171 0 0 51 34 18 6 1 2 18 69 -16 53 10 19 49 58 35 53 29 33 49 39 28 -172 0 0 51 18 19 6 1 4 17 68 -15 52 54 50 49 42 7 53 14 11 49 22 54 -173 0 0 51 1 42 6 1 5 16 68 -14 52 38 44 49 24 58 52 58 11 49 5 39 -174 0 0 50 44 25 6 1 7 16 67 -14 52 22 0 49 7 10 52 41 33 48 47 44 -175 0 0 50 26 29 6 1 9 15 66 -13 52 4 36 48 48 40 52 24 17 48 29 8 -176 0 0 50 7 51 6 1 10 14 65 -12 51 46 33 48 29 28 52 6 20 48 9 49 -177 0 0 49 48 32 6 1 12 14 65 -12 51 27 49 48 9 34 51 47 43 47 49 48 -178 0 0 49 28 29 6 1 13 13 64 -11 51 8 23 47 48 55 51 28 25 47 29 2 -179 0 0 49 7 44 6 1 15 12 63 -10 50 48 15 47 27 32 51 8 24 47 7 31 -180 0 0 48 46 13 6 1 16 11 62 -10 50 27 23 47 5 23 50 47 40 46 45 15 179 0 0 48 23 57 6 1 17 11 62 -9 50 5 47 46 42 27 50 26 12 46 22 11 178 0 0 48 0 54 6 1 19 10 61 -8 49 43 24 46 18 44 50 3 58 45 58 20 177 0 0 47 37 3 6 1 20 9 60 -7 49 20 15 45 54 11 49 40 57 45 33 39 176 0 0 47 12 23 6 1 21 8 59 -7 48 56 19 45 28 49 49 17 9 45 8 8 175 0 0 46 46 53 6 1 22 7 59 -6 48 31 33 45 2 35 48 52 32 44 41 46 174 0 0 46 20 32 6 1 23 7 58 -5 48 5 57 44 35 30 48 27 5 44 14 31 173 0 0 45 53 19 6 1 24 6 57 -4 47 39 30 44 7 30 48 0 47 43 46 23 172 0 0 45 25 12 6 1 24 5 56 -3 47 12 10 43 38 37 47 33 37 43 17 20 171 0 0 44 56 10 6 1 25 4 56 -3 46 43 56 43 8 47 47 5 33 42 47 21 170 0 0 44 26 13 6 1 25 3 55 -2 46 14 48 42 38 1 46 36 34 42 16 25 169 0 0 43 55 18 6 1 26 2 54 -1 45 44 43 42 6 17 46 6 40 41 44 31 Uncertainty in time = +/- 3 secs [Prediction of 2008 Nov 6.0] Data for the target star ------------------------ * name: TYC 1964-00787-1 * constellation : Leo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 10 01 25.3064 DE: +26 47 32.029 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .021 ) * V mag [mag]: 11.7 * B mag [mag]: 13.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (511) Davida approx. diameter [km]: 326 approx. diameter ["]: .249 distance from Earth [AU]: 1.80600 * orbital information: orbit source: Preston date of fit: 2008 Nov 05 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1402 number of rejected observations: 158 time covered by the observations: 1903 Jun 02 - 2008 Mar 08 1 sigma uncertainty ellipse (major, minor, PA): 0.021, 0.011, 99° remarks: * orbital elements for (511) Davida : Mean anomaly = 39.71758599 deg Arg. of pericenter = 338.34625804 deg Long. of node = 107.66432511 deg Inclination = 15.93731012 deg Eccentricity = 0.18598517 Semimajor axis = 3.16801286 AU Perihelion dist = 2.57880945 AU Mag: H = 6.28, G = 0.16 Epoch of elements : MJD 54868.24500000 TDT (2009 Feb 06.245) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Feb 6 511 Davida 5h 53.1m UT 11.7 10 1 25.306 26 47 32.03TYC 1964-00787-1 13.2 10.1 326 25.7 1.806 -1.922 23.57 -74.4318 26.786 95.24 -15.56 5.8855 0.07514 0.08199 -5.28412 4.84089 -0.00101 -0.00111 2000 38.2764192009 129.00000338.346258107.664325 15.9373100.18598517 3.1680129 2.5788094 6.2 5.00.16 RATE 1.7479280 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.030 0.024 95 1.10 0.026 0 54776.5020090206_0787-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 06, 05:15 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org