IOTA/IOTA-ES occultation update for (2543) Machado / TYC 2944-01840-1 event on 2009 Dec 07, 18:56 UT Visible from Summary ------- On 2009 Dec 07 UT, the 21 km diameter asteroid (2543) Machado will occult a 10.0 mag star in the constellation Auriga for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.4 mag to 16.4 mag (the magnitude of the asteroid) for at most 1.5 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 11 * date and approx. time of event: 2009 Dec 07, 18:49 - 2009 Dec 07, 19:04 UT * magnitude of target star: 10.0 * magnitude drop [mag]: 6.4 * estimated maximum duration [s]: 1.5 * Moon: 63 % sunlit, 49° distance * Sun: 147° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 6.13 * 1 sigma uncertainty interval [seconds]: +/- 7.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .069 +/- .067) * 1 sigma uncertainty ellipse (major, minor, PA): ( .069", .067", 91° ) * approx speed of asteroid's shadow [km/s]: 13.9933 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2944-01840-1 by 2543 Machado on 2009 Dec 7 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 159 19 52 -12 0 0 18 49 40 21 321 -1 159 27 43 159 12 0 161 4 11 157 35 35 158 24 51 -11 0 0 18 49 44 22 321 -2 158 32 41 158 17 1 160 8 46 156 40 56 157 30 1 -10 0 0 18 49 48 24 321 -3 157 37 50 157 22 13 159 13 36 155 46 24 156 35 20 - 9 0 0 18 49 52 25 321 -5 156 43 8 156 27 33 158 18 37 154 51 58 155 40 44 - 8 0 0 18 49 57 26 321 -6 155 48 31 155 32 58 157 23 48 153 57 33 154 46 11 - 7 0 0 18 50 2 28 322 -7 154 53 57 154 38 25 156 29 4 153 3 7 153 51 38 - 6 0 0 18 50 7 29 322 -8 153 59 24 153 43 53 155 34 24 152 8 38 152 57 2 - 5 0 0 18 50 12 30 322 -9 153 4 48 152 49 17 154 39 45 151 14 3 152 2 21 - 4 0 0 18 50 17 32 322 -11 152 10 6 151 54 35 153 45 3 150 19 20 151 7 31 - 3 0 0 18 50 23 33 322 -12 151 15 17 150 59 46 152 50 16 149 24 24 150 12 31 - 2 0 0 18 50 29 34 322 -13 150 20 17 150 4 44 151 55 22 148 29 14 149 17 17 - 1 0 0 18 50 35 36 322 -14 149 25 4 149 9 29 151 0 18 147 33 48 148 21 46 0 0 0 18 50 41 37 322 -16 148 29 34 148 13 58 150 5 0 146 38 1 147 25 56 1 0 0 18 50 48 38 322 -17 147 33 45 147 18 6 149 9 27 145 41 51 Latitude Latitude Latitude Latitude 146 0 0 2 31 34 18 50 58 40 323 -19 2 39 54 2 23 13 4 21 49 0 40 39 145 0 0 3 34 51 18 51 6 42 323 -20 3 43 9 3 26 33 5 24 40 1 44 25 144 0 0 4 37 34 18 51 14 43 323 -21 4 45 49 4 29 17 6 26 53 2 47 37 143 0 0 5 39 38 18 51 21 45 323 -23 5 47 52 5 31 25 7 28 28 3 50 13 142 0 0 6 41 3 18 51 29 46 323 -24 6 49 14 6 32 51 8 29 21 4 52 10 141 0 0 7 41 44 18 51 37 47 323 -25 7 49 53 7 33 35 9 29 29 5 53 25 140 0 0 8 41 41 18 51 46 49 323 -26 8 49 47 8 33 34 10 28 52 6 53 56 139 0 0 9 40 50 18 51 54 50 323 -28 9 48 53 9 32 46 11 27 26 7 53 40 138 0 0 10 39 9 18 52 2 51 323 -29 10 47 10 10 31 8 12 25 10 8 52 37 137 0 0 11 36 38 18 52 11 53 323 -30 11 44 36 11 28 40 13 22 1 9 50 43 136 0 0 12 33 14 18 52 19 54 323 -31 12 41 9 12 25 18 14 18 0 10 47 57 135 0 0 13 28 55 18 52 28 55 323 -32 13 36 48 13 21 3 15 13 4 11 44 17 134 0 0 14 23 42 18 52 37 57 323 -34 14 31 31 14 15 52 16 7 11 12 39 43 133 0 0 15 17 31 18 52 45 58 323 -35 15 25 18 15 9 45 17 0 22 13 34 12 132 0 0 16 10 24 18 52 54 59 323 -36 16 18 7 16 2 40 17 52 35 14 27 44 131 0 0 17 2 18 18 53 3 60 323 -37 17 9 58 16 54 37 18 43 49 15 20 19 130 0 0 17 53 12 18 53 11 62 324 -38 18 0 50 17 45 35 19 34 5 16 11 54 129 0 0 18 43 8 18 53 20 63 324 -39 18 50 42 18 35 33 20 23 20 17 2 30 128 0 0 19 32 3 18 53 29 64 324 -40 19 39 34 19 24 32 21 11 35 17 52 6 127 0 0 20 19 58 18 53 38 65 324 -41 20 27 26 20 12 30 21 58 50 18 40 42 126 0 0 21 6 53 18 53 46 66 324 -42 21 14 18 20 59 28 22 45 5 19 28 17 125 0 0 21 52 47 18 53 55 67 325 -43 22 0 9 21 45 25 23 30 19 20 14 52 124 0 0 22 37 41 18 54 4 69 325 -44 22 45 0 22 30 21 24 14 33 21 0 26 123 0 0 23 21 34 18 54 12 70 326 -45 23 28 50 23 14 17 24 57 46 21 44 59 122 0 0 24 4 26 18 54 21 71 326 -46 24 11 39 23 57 13 25 40 0 22 28 31 121 0 0 24 46 19 18 54 29 72 327 -47 24 53 29 24 39 9 26 21 14 23 11 4 120 0 0 25 27 12 18 54 38 73 328 -48 25 34 19 25 20 5 27 1 28 23 52 36 119 0 0 26 7 6 18 54 46 74 329 -49 26 14 10 26 0 1 27 40 44 24 33 8 118 0 0 26 46 1 18 54 54 75 330 -50 26 53 2 26 38 59 28 19 1 25 12 41 117 0 0 27 23 57 18 55 3 76 331 -51 27 30 56 27 16 58 28 56 20 25 51 15 116 0 0 28 0 56 18 55 11 77 332 -52 28 7 51 27 54 0 29 32 41 26 28 51 115 0 0 28 36 57 18 55 19 78 334 -53 28 43 50 28 30 4 30 8 6 27 5 29 114 0 0 29 12 1 18 55 27 78 336 -54 29 18 52 29 5 11 30 42 35 27 41 10 113 0 0 29 46 10 18 55 35 79 338 -54 29 52 57 29 39 22 31 16 8 28 15 54 112 0 0 30 19 23 18 55 43 80 341 -55 30 26 8 30 12 37 31 48 46 28 49 42 111 0 0 30 51 41 18 55 51 81 345 -56 30 58 23 30 44 58 32 20 30 29 22 34 110 0 0 31 23 5 18 55 59 81 349 -57 31 29 45 31 16 25 32 51 21 29 54 32 109 0 0 31 53 36 18 56 6 82 354 -58 32 0 13 31 46 58 33 21 19 30 25 36 108 0 0 32 23 14 18 56 14 83 359 -58 32 29 49 32 16 39 33 50 25 30 55 47 107 0 0 32 52 0 18 56 21 83 6 -59 32 58 33 32 45 27 34 18 40 31 25 5 106 0 0 33 19 55 18 56 29 83 13 -60 33 26 25 33 13 25 34 46 4 31 53 31 105 0 0 33 47 0 18 56 36 83 21 -60 33 53 28 33 40 31 35 12 38 32 21 6 104 0 0 34 13 14 18 56 43 83 29 -61 34 19 40 34 6 48 35 38 24 32 47 50 103 0 0 34 38 40 18 56 51 83 37 -62 34 45 4 34 32 16 36 3 21 33 13 45 102 0 0 35 3 17 18 56 58 83 45 -62 35 9 39 34 56 56 36 27 30 33 38 50 101 0 0 35 27 7 18 57 5 83 52 -63 35 33 27 35 20 48 36 50 53 34 3 8 100 0 0 35 50 10 18 57 12 82 57 -64 35 56 27 35 43 52 37 13 29 34 26 37 99 0 0 36 12 27 18 57 19 82 62 -64 36 18 42 36 6 11 37 35 20 34 49 20 98 0 0 36 33 58 18 57 25 81 67 -65 36 40 11 36 27 44 37 56 26 35 11 16 97 0 0 36 54 44 18 57 32 81 70 -65 37 0 55 36 48 32 38 16 47 35 32 27 96 0 0 37 14 46 18 57 39 80 73 -66 37 20 56 37 8 36 38 36 26 35 52 53 95 0 0 37 34 4 18 57 45 80 76 -66 37 40 12 37 27 56 38 55 21 36 12 34 94 0 0 37 52 39 18 57 52 79 78 -67 37 58 46 37 46 33 39 13 34 36 31 31 93 0 0 38 10 32 18 57 58 78 79 -67 38 16 37 38 4 27 39 31 6 36 49 46 92 0 0 38 27 43 18 58 5 78 81 -68 38 33 47 38 21 40 39 47 56 37 7 18 91 0 0 38 44 13 18 58 11 77 82 -68 38 50 15 38 38 11 40 4 6 37 24 8 90 0 0 39 0 2 18 58 17 76 83 -68 39 6 3 38 54 2 40 19 36 37 40 16 89 0 0 39 15 11 18 58 24 75 84 -69 39 21 10 39 9 12 40 34 27 37 55 44 88 0 0 39 29 41 18 58 30 75 84 -69 39 35 38 39 23 43 40 48 38 38 10 31 87 0 0 39 43 31 18 58 36 74 85 -69 39 49 27 39 37 35 41 2 12 38 24 38 86 0 0 39 56 43 18 58 42 73 85 -70 40 2 38 39 50 47 41 15 7 38 38 6 85 0 0 40 9 16 18 58 48 73 85 -70 40 15 10 40 3 22 41 27 25 38 50 55 84 0 0 40 21 11 18 58 54 72 85 -70 40 27 4 40 15 19 41 39 6 39 3 6 83 0 0 40 32 30 18 58 59 71 86 -70 40 38 21 40 26 38 41 50 10 39 14 38 82 0 0 40 43 11 18 59 5 70 86 -70 40 49 2 40 37 20 42 0 38 39 25 32 81 0 0 40 53 15 18 59 11 70 86 -71 40 59 5 40 47 25 42 10 29 39 35 50 80 0 0 41 2 44 18 59 17 69 86 -71 41 8 33 40 56 55 42 19 46 39 45 30 79 0 0 41 11 36 18 59 22 68 85 -71 41 17 24 41 5 48 42 28 27 39 54 33 78 0 0 41 19 53 18 59 28 68 85 -71 41 25 40 41 14 5 42 36 33 40 3 1 77 0 0 41 27 34 18 59 33 67 85 -71 41 33 21 41 21 47 42 44 5 40 10 52 76 0 0 41 34 40 18 59 39 66 85 -71 41 40 26 41 28 54 42 51 2 40 18 7 75 0 0 41 41 12 18 59 44 65 85 -71 41 46 57 41 35 26 42 57 26 40 24 47 74 0 0 41 47 9 18 59 49 65 84 -71 41 52 53 41 41 24 43 3 15 40 30 51 73 0 0 41 52 31 18 59 55 64 84 -71 41 58 15 41 46 47 43 8 31 40 36 20 72 0 0 41 57 19 19 0 0 63 84 -71 42 3 3 41 51 35 43 13 13 40 41 15 71 0 0 42 1 33 19 0 5 63 83 -71 42 7 17 41 55 50 43 17 22 40 45 34 70 0 0 42 5 14 19 0 10 62 83 -70 42 10 57 41 59 31 43 20 57 40 49 19 69 0 0 42 8 20 19 0 16 61 83 -70 42 14 3 42 2 38 43 24 0 40 52 30 68 0 0 42 10 53 19 0 21 60 82 -70 42 16 36 42 5 11 43 26 29 40 55 6 67 0 0 42 12 52 19 0 26 60 82 -70 42 18 35 42 7 10 43 28 26 40 57 7 66 0 0 42 14 18 19 0 31 59 81 -70 42 20 0 42 8 36 43 29 50 40 58 35 65 0 0 42 15 10 19 0 36 58 81 -69 42 20 52 42 9 28 43 30 41 40 59 28 64 0 0 42 15 29 19 0 41 58 80 -69 42 21 11 42 9 47 43 31 0 40 59 47 63 0 0 42 15 14 19 0 45 57 80 -69 42 20 56 42 9 32 43 30 45 40 59 32 62 0 0 42 14 26 19 0 50 56 80 -68 42 20 8 42 8 44 43 29 58 40 58 42 61 0 0 42 13 4 19 0 55 55 79 -68 42 18 46 42 7 22 43 28 38 40 57 19 60 0 0 42 11 8 19 1 0 55 79 -68 42 16 51 42 5 26 43 26 45 40 55 21 59 0 0 42 8 39 19 1 5 54 78 -67 42 14 22 42 2 56 43 24 19 40 52 48 58 0 0 42 5 36 19 1 9 53 78 -67 42 11 19 41 59 53 43 21 20 40 49 41 57 0 0 42 1 59 19 1 14 53 77 -67 42 7 42 41 56 15 43 17 47 40 45 59 56 0 0 41 57 48 19 1 19 52 76 -66 42 3 32 41 52 4 43 13 42 40 41 42 55 0 0 41 53 2 19 1 23 51 76 -66 41 58 47 41 47 18 43 9 2 40 36 51 54 0 0 41 47 42 19 1 28 50 75 -65 41 53 27 41 41 57 43 3 49 40 31 24 53 0 0 41 41 48 19 1 32 50 75 -65 41 47 33 41 36 2 42 58 2 40 25 21 52 0 0 41 35 18 19 1 37 49 74 -64 41 41 4 41 29 32 42 51 41 40 18 43 51 0 0 41 28 13 19 1 41 48 74 -64 41 34 0 41 22 26 42 44 46 40 11 29 50 0 0 41 20 33 19 1 46 47 73 -63 41 26 20 41 14 45 42 37 15 40 3 38 49 0 0 41 12 16 19 1 50 47 73 -63 41 18 5 41 6 28 42 29 10 39 55 11 48 0 0 41 3 24 19 1 55 46 72 -62 41 9 13 40 57 35 42 20 29 39 46 8 47 0 0 40 53 55 19 1 59 45 72 -62 40 59 45 40 48 5 42 11 12 39 36 26 46 0 0 40 43 50 19 2 3 44 71 -61 40 49 41 40 37 58 42 1 19 39 26 7 45 0 0 40 33 6 19 2 8 44 70 -61 40 38 59 40 27 14 41 50 50 39 15 11 44 0 0 40 21 46 19 2 12 43 70 -60 40 27 39 40 15 52 41 39 44 39 3 35 43 0 0 40 9 47 19 2 16 42 69 -60 40 15 41 40 3 52 41 28 0 38 51 21 42 0 0 39 57 9 19 2 20 41 69 -59 40 3 5 39 51 14 41 15 39 38 38 27 41 0 0 39 43 53 19 2 24 41 68 -58 39 49 49 39 37 56 41 2 39 38 24 53 40 0 0 39 29 56 19 2 28 40 68 -58 39 35 54 39 23 58 40 49 0 38 10 39 39 0 0 39 15 20 19 2 33 39 67 -57 39 21 19 39 9 20 40 34 42 37 55 44 38 0 0 39 0 3 19 2 37 38 67 -57 39 6 4 38 54 1 40 19 44 37 40 7 37 0 0 38 44 4 19 2 41 37 66 -56 38 50 6 38 38 1 40 4 6 37 23 48 36 0 0 38 27 23 19 2 45 37 65 -55 38 33 28 38 21 19 39 47 46 37 6 47 35 0 0 38 10 0 19 2 48 36 65 -55 38 16 6 38 3 54 39 30 45 36 49 2 34 0 0 37 51 54 19 2 52 35 64 -54 37 58 1 37 45 46 39 13 1 36 30 32 33 0 0 37 33 3 19 2 56 34 64 -53 37 39 13 37 26 54 38 54 34 36 11 18 32 0 0 37 13 29 19 3 0 33 63 -53 37 19 40 37 7 17 38 35 23 35 51 19 31 0 0 36 53 8 19 3 4 32 63 -52 36 59 21 36 46 55 38 15 28 35 30 33 30 0 0 36 32 2 19 3 7 32 62 -51 36 38 17 36 25 47 37 54 47 35 9 1 29 0 0 36 10 8 19 3 11 31 61 -50 36 16 25 36 3 51 37 33 21 34 46 41 28 0 0 35 47 28 19 3 14 30 61 -50 35 53 47 35 41 8 37 11 7 34 23 32 27 0 0 35 23 58 19 3 18 29 60 -49 35 30 19 35 17 37 36 48 6 33 59 33 26 0 0 34 59 39 19 3 21 28 60 -48 35 6 3 34 53 16 36 24 17 33 34 45 25 0 0 34 34 31 19 3 25 27 59 -47 34 40 56 34 28 5 35 59 38 33 9 6 24 0 0 34 8 31 19 3 28 26 59 -47 34 14 59 34 2 2 35 34 9 32 42 35 23 0 0 33 41 39 19 3 31 25 58 -46 33 48 9 33 35 8 35 7 49 32 15 11 22 0 0 33 13 54 19 3 35 24 58 -45 33 20 27 33 7 21 34 40 38 31 46 53 21 0 0 32 45 16 19 3 38 23 57 -44 32 51 52 32 38 41 34 12 33 31 17 41 20 0 0 32 15 44 19 3 41 22 57 -43 32 22 22 32 9 5 33 43 35 30 47 34 19 0 0 31 45 15 19 3 44 21 56 -42 31 51 56 31 38 35 33 13 42 30 16 30 18 0 0 31 13 51 19 3 46 20 56 -42 31 20 34 31 7 7 32 42 53 29 44 29 17 0 0 30 41 29 19 3 49 19 55 -41 30 48 15 30 34 43 32 11 8 29 11 30 16 0 0 30 8 9 19 3 52 18 55 -40 30 14 58 30 1 20 31 38 26 28 37 31 15 0 0 29 33 50 19 3 54 17 54 -39 29 40 42 29 26 58 31 4 45 28 2 33 14 0 0 28 58 31 19 3 57 16 54 -38 29 5 26 28 51 36 30 30 5 27 26 35 13 0 0 28 22 11 19 3 59 15 53 -37 28 29 9 28 15 13 29 54 25 26 49 34 12 0 0 27 44 49 19 4 1 14 53 -36 27 51 50 27 37 48 29 17 44 26 11 31 11 0 0 27 6 25 19 4 3 13 52 -35 27 13 29 26 59 21 28 40 1 25 32 25 10 0 0 26 26 58 19 4 5 12 52 -34 26 34 5 26 19 50 28 1 16 24 52 15 9 0 0 25 46 26 19 4 7 11 52 -33 25 53 37 25 39 15 27 21 27 24 11 0 8 0 0 25 4 50 19 4 9 10 51 -32 25 12 4 24 57 35 26 40 34 23 28 39 7 0 0 24 22 8 19 4 10 9 51 -31 24 29 25 24 14 50 25 58 36 22 45 13 6 0 0 23 38 20 19 4 12 7 50 -30 23 45 41 23 30 59 25 15 33 22 0 40 5 0 0 22 53 25 19 4 13 6 50 -29 23 0 50 22 46 1 24 31 23 21 15 0 4 0 0 22 7 24 19 4 14 5 50 -28 22 14 52 21 59 56 23 46 7 20 28 12 3 0 0 21 20 15 19 4 14 4 49 -27 21 27 46 21 12 44 22 59 44 19 40 17 2 0 0 20 31 59 19 4 15 3 49 -26 20 39 33 20 24 24 22 12 14 18 51 14 1 0 0 19 42 35 19 4 15 1 48 -24 19 50 13 19 34 56 21 23 36 18 1 2 0 0 0 18 52 3 19 4 16 0 48 -23 18 59 45 18 44 21 .. .. .. .. .. .. Uncertainty in time = +/- 9 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 2944-01840-1 * constellation : Auriga * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 13 53.9504 DE: +39 14 34.498 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .014, .016 ) * V mag [mag]: 10.0 * B mag [mag]: 10.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2543) Machado approx. diameter [km]: 21 approx. diameter ["]: .011 distance from Earth [AU]: 2.62000 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: MPC (via Astdys) number of used observations: 601 number of rejected observations: 10 time covered by the observations: 1943 Oct 29 - 2007 Aug 08 1 sigma uncertainty ellipse (major, minor, PA): 0.068, 0.065, 91° remarks: * orbital elements for (2543) Machado : Mean anomaly = 101.45183781 deg Arg. of pericenter = 286.04221370 deg Long. of node = 41.07131461 deg Inclination = 15.04123859 deg Eccentricity = 0.29001946 Semimajor axis = 3.08841521 AU Perihelion dist = 2.19271470 AU Mag: H = 10.96, G = 0.15 Epoch of elements : MJD 55172.78900000 TDT (2009 Dec 07.789) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Dec 7 2543 Machado 18h 56.7m UT 10.0 7 13 53.950 39 14 34.50TYC 2944-01840-1 10.2 16.4 21 1.5 2.620 -1.969 13.41 107.6195 39.239 -106.26 -22.68 18.9451 -0.05289 -0.09021 -6.81167 3.99784 -0.00316 -0.00111 2000 100.945373200912 5.00000286.042214 41.071315 15.0412390.29001946 3.0884152 2.192714711.0 5.00.15 RATE 1.8159360 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.069 0.067 91 7.13 0.068 0 54581.5020091207_1840-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 10:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org