IOTA/IOTA-ES occultation update for (469) Argentina / TYC 7869-02053-1 event on 2009 Jul 03, 16:35 UT Visible from Summary ------- On 2009 Jul 03 UT, the 126 km diameter asteroid (469) Argentina will occult a 10.4 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.9 mag to 13.2 mag (the magnitude of the asteroid) for at most 12.0 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: 85 * date and approx. time of event: 2009 Jul 03, 16:25 - 2009 Jul 03, 16:44 UT * magnitude of target star: 10.4 * magnitude drop [mag]: 2.9 * estimated maximum duration [s]: 12.0 * Moon: 88 % sunlit, 21° distance * Sun: 153° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 134 * 1 sigma uncertainty interval [path widths]: +/- 0.60 * 1 sigma uncertainty interval [seconds]: +/- 6.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .055 +/- .048) * 1 sigma uncertainty ellipse (major, minor, PA): ( .055", .048", 91° ) * approx speed of asteroid's shadow [km/s]: 10.4324 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7869-02053-1 by 469 Argentina on 2009 Jul 3 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 34 26 30 29 0 0 16 44 22 8 143 -1 35 20 41 33 32 21 36 25 45 32 27 24 35 23 12 28 0 0 16 44 20 10 144 -2 36 16 55 34 29 31 37 21 27 33 25 9 36 19 30 27 0 0 16 44 17 11 144 -3 37 12 48 35 26 15 38 16 51 34 22 24 37 15 27 26 0 0 16 44 14 12 145 -4 38 8 23 36 22 36 39 11 59 35 19 15 38 11 8 25 0 0 16 44 11 13 145 -6 39 3 43 37 18 38 40 6 56 36 15 44 39 6 36 24 0 0 16 44 8 15 145 -7 39 58 52 38 14 25 41 1 43 37 11 55 40 1 53 23 0 0 16 44 4 16 146 -8 40 53 52 39 10 0 41 56 24 38 7 52 40 57 4 22 0 0 16 44 0 17 146 -9 41 48 48 40 5 26 42 51 3 39 3 37 41 52 10 21 0 0 16 43 55 19 147 -10 42 43 42 41 0 46 43 45 42 39 59 14 42 47 16 20 0 0 16 43 50 20 147 -12 43 38 36 41 56 3 44 40 25 40 54 46 43 42 24 19 0 0 16 43 45 21 147 -13 44 33 35 42 51 21 45 35 13 41 50 16 44 37 36 18 0 0 16 43 40 22 148 -14 45 28 40 43 46 42 46 30 11 42 45 47 45 32 57 17 0 0 16 43 34 24 148 -15 46 23 56 44 42 8 47 25 20 43 41 22 46 28 28 16 0 0 16 43 28 25 148 -17 47 19 23 45 37 44 48 20 44 44 37 4 47 24 13 15 0 0 16 43 21 26 149 -18 48 15 7 46 33 32 49 16 26 45 32 56 48 20 15 14 0 0 16 43 14 28 149 -19 49 11 8 47 29 34 50 12 29 46 29 0 49 16 37 13 0 0 16 43 7 29 149 -20 50 7 31 48 25 55 51 8 55 47 25 20 50 13 20 12 0 0 16 43 0 30 150 -22 51 4 19 49 22 36 52 5 48 48 21 59 51 10 30 11 0 0 16 42 52 32 150 -23 52 1 34 50 19 40 53 3 11 49 18 59 52 8 8 10 0 0 16 42 44 33 151 -24 52 59 20 51 17 12 54 1 7 50 16 24 53 6 19 9 0 0 16 42 35 34 151 -26 53 57 39 52 15 14 54 59 39 51 14 16 54 5 4 8 0 0 16 42 27 36 151 -27 54 56 36 53 13 49 55 58 51 52 12 40 55 4 29 7 0 0 16 42 17 37 152 -28 55 56 15 54 13 1 56 58 47 53 11 38 56 4 35 6 0 0 16 42 8 38 152 -29 56 56 37 55 12 53 57 59 30 54 11 13 57 5 29 5 0 0 16 41 58 40 152 -31 57 57 48 56 13 29 59 1 4 55 11 30 58 7 12 4 0 0 16 41 48 41 153 -32 58 59 52 57 14 53 60 3 34 56 12 32 59 9 49 3 0 0 16 41 37 42 153 -34 60 2 53 58 17 8 61 7 4 57 14 23 60 13 26 2 0 0 16 41 26 44 154 -35 61 6 55 59 20 20 62 11 39 58 17 8 61 18 6 1 0 0 16 41 15 45 154 -36 62 12 4 60 24 33 63 17 25 59 20 50 62 23 54 0 0 0 16 41 3 46 155 -38 63 18 24 61 29 52 64 24 25 60 25 34 63 30 57 - 1 0 0 16 40 51 48 155 -39 64 26 2 62 36 21 65 32 48 61 31 26 Latitude Latitude Latitude Latitude 64 0 0 - 1 25 38 16 40 46 48 156 -40 - 0 37 3 - 2 13 53 0 21 44 - 3 11 22 65 0 0 - 2 17 53 16 40 35 49 156 -41 - 1 29 41 - 3 5 46 - 0 31 22 - 4 2 49 66 0 0 - 3 9 12 16 40 24 51 157 -42 - 2 21 22 - 3 56 42 - 1 23 31 - 4 53 19 67 0 0 - 3 59 33 16 40 13 52 157 -43 - 3 12 5 - 4 46 42 - 2 14 42 - 5 42 53 68 0 0 - 4 48 56 16 40 2 53 158 -45 - 4 1 50 - 5 35 43 - 3 4 55 - 6 31 29 69 0 0 - 5 37 20 16 39 50 54 159 -46 - 4 50 37 - 6 23 46 - 3 54 8 - 7 19 7 70 0 0 - 6 24 46 16 39 39 55 160 -47 - 5 38 24 - 7 10 51 - 4 42 22 - 8 5 46 71 0 0 - 7 11 13 16 39 28 56 160 -48 - 6 25 13 - 7 56 57 - 5 29 37 - 8 51 28 72 0 0 - 7 56 41 16 39 16 57 161 -49 - 7 11 2 - 8 42 4 - 6 15 51 - 9 36 11 73 0 0 - 8 41 10 16 39 5 58 162 -51 - 7 55 51 - 9 26 13 - 7 1 6 -10 19 56 74 0 0 - 9 24 40 16 38 54 59 163 -52 - 8 39 41 -10 9 23 - 7 45 21 -11 2 43 75 0 0 -10 7 11 16 38 42 60 164 -53 - 9 22 32 -10 51 34 - 8 28 36 -11 44 31 76 0 0 -10 48 43 16 38 31 61 165 -54 -10 4 24 -11 32 47 - 9 10 52 -12 25 21 77 0 0 -11 29 16 16 38 19 62 166 -55 -10 45 16 -12 13 2 - 9 52 8 -13 5 14 78 0 0 -12 8 51 16 38 8 63 168 -56 -11 25 10 -12 52 18 -10 32 25 -13 44 9 79 0 0 -12 47 29 16 37 56 63 169 -57 -12 4 6 -13 30 37 -11 11 43 -14 22 6 80 0 0 -13 25 8 16 37 45 64 170 -59 -12 42 3 -14 7 59 -11 50 3 -14 59 7 81 0 0 -14 1 50 16 37 34 65 172 -60 -13 19 3 -14 44 24 -12 27 24 -15 35 12 82 0 0 -14 37 36 16 37 23 66 173 -61 -13 55 6 -15 19 52 -13 3 48 -16 10 20 83 0 0 -15 12 25 16 37 11 66 175 -62 -14 30 12 -15 54 25 -13 39 14 -16 44 33 84 0 0 -15 46 18 16 37 0 67 177 -63 -15 4 21 -16 28 1 -14 13 44 -17 17 50 85 0 0 -16 19 15 16 36 49 67 179 -64 -15 37 35 -17 0 43 -14 47 17 -17 50 13 86 0 0 -16 51 18 16 36 38 68 181 -65 -16 9 53 -17 32 30 -15 19 54 -18 21 42 87 0 0 -17 22 26 16 36 27 68 183 -66 -16 41 16 -18 3 23 -15 51 37 -18 52 18 88 0 0 -17 52 40 16 36 16 69 185 -67 -17 11 45 -18 33 23 -16 22 24 -19 22 0 89 0 0 -18 22 1 16 36 5 69 187 -68 -17 41 21 -19 2 30 -16 52 17 -19 50 50 90 0 0 -18 50 29 16 35 54 70 189 -69 -18 10 3 -19 30 44 -17 21 16 -20 18 47 91 0 0 -19 18 4 16 35 43 70 192 -70 -18 37 52 -19 58 6 -17 49 22 -20 45 54 92 0 0 -19 44 48 16 35 33 70 194 -71 -19 4 49 -20 24 37 -18 16 35 -21 12 9 93 0 0 -20 10 41 16 35 22 70 196 -72 -19 30 55 -20 50 17 -18 42 57 -21 37 34 94 0 0 -20 35 43 16 35 12 70 199 -73 -19 56 9 -21 15 7 -19 8 26 -22 2 10 95 0 0 -20 59 55 16 35 1 70 201 -74 -20 20 33 -21 39 7 -19 33 5 -22 25 55 96 0 0 -21 23 18 16 34 51 70 204 -75 -20 44 8 -22 2 18 -19 56 53 -22 48 53 97 0 0 -21 45 51 16 34 41 70 206 -76 -21 6 52 -22 24 40 -20 19 52 -23 11 2 98 0 0 -22 7 36 16 34 30 70 208 -77 -21 28 48 -22 46 14 -20 42 1 -23 32 23 99 0 0 -22 28 32 16 34 20 70 211 -77 -21 49 55 -23 7 0 -21 3 21 -23 52 57 100 0 0 -22 48 42 16 34 10 70 213 -78 -22 10 14 -23 26 59 -21 23 52 -24 12 44 101 0 0 -23 8 4 16 34 0 70 215 -79 -22 29 46 -23 46 12 -21 43 36 -24 31 45 102 0 0 -23 26 39 16 33 50 70 217 -80 -22 48 31 -24 4 38 -22 2 33 -24 50 1 103 0 0 -23 44 29 16 33 40 69 219 -81 -23 6 30 -24 22 19 -22 20 42 -25 7 31 104 0 0 -24 1 33 16 33 31 69 221 -82 -23 23 42 -24 39 14 -22 38 5 -25 24 16 105 0 0 -24 17 51 16 33 21 68 223 -83 -23 40 9 -24 55 24 -22 54 41 -25 40 17 106 0 0 -24 33 25 16 33 11 68 224 -83 -23 55 50 -25 10 50 -23 10 33 -25 55 33 107 0 0 -24 48 14 16 33 2 68 226 -84 -24 10 47 -25 25 32 -23 25 38 -26 10 6 108 0 0 -25 2 19 16 32 52 67 227 -85 -24 24 59 -25 39 30 -23 39 59 -26 23 56 109 0 0 -25 15 40 16 32 43 67 229 -85 -24 38 27 -25 52 45 -23 53 36 -26 37 3 110 0 0 -25 28 19 16 32 34 66 230 -86 -24 51 12 -26 5 16 -24 6 28 -26 49 27 111 0 0 -25 40 14 16 32 25 66 231 -86 -25 3 13 -26 17 6 -24 18 37 -27 1 9 112 0 0 -25 51 26 16 32 15 65 232 -86 -25 14 31 -26 28 12 -24 30 1 -27 12 9 113 0 0 -26 1 56 16 32 6 64 233 -86 -25 25 6 -26 38 37 -24 40 43 -27 22 28 114 0 0 -26 11 44 16 31 57 64 234 -86 -25 34 59 -26 48 20 -24 50 42 -27 32 5 115 0 0 -26 20 50 16 31 49 63 235 -86 -25 44 10 -26 57 21 -24 59 58 -27 41 1 116 0 0 -26 29 14 16 31 40 63 236 -85 -25 52 38 -27 5 42 -25 8 32 -27 49 16 117 0 0 -26 36 57 16 31 31 62 236 -85 -26 0 25 -27 13 21 -25 16 23 -27 56 50 118 0 0 -26 43 59 16 31 22 61 237 -84 -26 7 30 -27 20 19 -25 23 33 -28 3 44 119 0 0 -26 50 19 16 31 14 61 238 -83 -26 13 54 -27 26 36 -25 30 0 -28 9 58 120 0 0 -26 55 59 16 31 5 60 238 -83 -26 19 36 -27 32 13 -25 35 46 -28 15 32 121 0 0 -27 0 58 16 30 57 59 239 -82 -26 24 38 -27 37 10 -25 40 50 -28 20 25 122 0 0 -27 5 16 16 30 48 59 239 -81 -26 28 58 -27 41 26 -25 45 13 -28 24 39 123 0 0 -27 8 54 16 30 40 58 239 -80 -26 32 38 -27 45 2 -25 48 55 -28 28 13 124 0 0 -27 11 51 16 30 32 57 240 -79 -26 35 36 -27 47 58 -25 51 55 -28 31 7 125 0 0 -27 14 8 16 30 24 56 240 -79 -26 37 54 -27 50 13 -25 54 14 -28 33 22 126 0 0 -27 15 44 16 30 16 56 240 -78 -26 39 31 -27 51 49 -25 55 52 -28 34 57 127 0 0 -27 16 40 16 30 8 55 240 -77 -26 40 28 -27 52 45 -25 56 49 -28 35 52 128 0 0 -27 16 56 16 30 0 54 241 -76 -26 40 43 -27 53 1 -25 57 5 -28 36 8 129 0 0 -27 16 31 16 29 52 53 241 -75 -26 40 18 -27 52 36 -25 56 39 -28 35 44 130 0 0 -27 15 26 16 29 44 53 241 -74 -26 39 12 -27 51 32 -25 55 32 -28 34 41 131 0 0 -27 13 41 16 29 36 52 241 -74 -26 37 25 -27 49 47 -25 53 44 -28 32 57 132 0 0 -27 11 14 16 29 29 51 241 -73 -26 34 58 -27 47 23 -25 51 14 -28 30 34 133 0 0 -27 8 7 16 29 21 50 241 -72 -26 31 49 -27 44 17 -25 48 3 -28 27 31 134 0 0 -27 4 19 16 29 14 50 241 -71 -26 27 59 -27 40 32 -25 44 10 -28 23 48 135 0 0 -26 59 50 16 29 6 49 241 -70 -26 23 27 -27 36 5 -25 39 36 -28 19 25 136 0 0 -26 54 40 16 28 59 48 241 -69 -26 18 14 -27 30 58 -25 34 19 -28 14 21 137 0 0 -26 48 49 16 28 52 47 241 -69 -26 12 19 -27 25 10 -25 28 20 -28 8 36 138 0 0 -26 42 15 16 28 44 46 241 -68 -26 5 42 -27 18 40 -25 21 39 -28 2 11 139 0 0 -26 35 0 16 28 37 46 241 -67 -25 58 23 -27 11 29 -25 14 14 -27 55 5 140 0 0 -26 27 3 16 28 30 45 240 -66 -25 50 21 -27 3 36 -25 6 7 -27 47 17 141 0 0 -26 18 23 16 28 23 44 240 -65 -25 41 37 -26 55 1 -24 57 17 -27 38 48 142 0 0 -26 9 1 16 28 16 43 240 -64 -25 32 9 -26 45 44 -24 47 43 -27 29 37 143 0 0 -25 58 55 16 28 9 42 240 -63 -25 21 58 -26 35 44 -24 37 25 -27 19 43 144 0 0 -25 48 6 16 28 3 41 240 -63 -25 11 3 -26 25 1 -24 26 22 -27 9 7 145 0 0 -25 36 33 16 27 56 41 240 -62 -24 59 23 -26 13 34 -24 14 35 -26 57 48 146 0 0 -25 24 16 16 27 49 40 239 -61 -24 46 59 -26 1 24 -24 2 3 -26 45 45 147 0 0 -25 11 14 16 27 43 39 239 -60 -24 33 50 -25 48 29 -23 48 45 -26 32 59 148 0 0 -24 57 27 16 27 36 38 239 -59 -24 19 56 -25 34 49 -23 34 41 -26 19 28 149 0 0 -24 42 55 16 27 30 37 239 -58 -24 5 15 -25 20 25 -23 19 51 -26 5 13 150 0 0 -24 27 36 16 27 24 36 239 -57 -23 49 48 -25 5 15 -23 4 13 -25 50 13 151 0 0 -24 11 31 16 27 18 35 238 -56 -23 33 34 -24 49 18 -22 47 48 -25 34 26 152 0 0 -23 54 38 16 27 12 34 238 -55 -23 16 32 -24 32 35 -22 30 35 -25 17 54 153 0 0 -23 36 58 16 27 6 33 238 -55 -22 58 42 -24 15 4 -22 12 34 -25 0 35 154 0 0 -23 18 30 16 27 0 33 238 -54 -22 40 4 -23 56 46 -21 53 43 -24 42 28 155 0 0 -22 59 12 16 26 54 32 237 -53 -22 20 36 -23 37 39 -21 34 2 -24 23 34 156 0 0 -22 39 6 16 26 49 31 237 -52 -22 0 18 -23 17 43 -21 13 30 -24 3 51 157 0 0 -22 18 8 16 26 43 30 237 -51 -21 39 9 -22 56 57 -20 52 8 -23 43 18 158 0 0 -21 56 21 16 26 38 29 237 -50 -21 17 9 -22 35 21 -20 29 53 -23 21 56 159 0 0 -21 33 41 16 26 32 28 236 -49 -20 54 18 -22 12 54 -20 6 46 -22 59 43 160 0 0 -21 10 10 16 26 27 27 236 -48 -20 30 33 -21 49 35 -19 42 46 -22 36 39 161 0 0 -20 45 45 16 26 22 26 236 -47 -20 5 55 -21 25 24 -19 17 52 -22 12 44 162 0 0 -20 20 27 16 26 17 25 236 -46 -19 40 23 -21 0 19 -18 52 3 -21 47 55 163 0 0 -19 54 14 16 26 12 24 235 -45 -19 13 56 -20 34 21 -18 25 19 -21 22 13 164 0 0 -19 27 6 16 26 8 23 235 -44 -18 46 34 -20 7 27 -17 57 38 -20 55 37 165 0 0 -18 59 3 16 26 3 22 235 -43 -18 18 15 -19 39 39 -17 29 0 -20 28 7 166 0 0 -18 30 2 16 25 59 21 235 -42 -17 48 58 -19 10 54 -16 59 25 -19 59 40 167 0 0 -18 0 4 16 25 55 20 234 -41 -17 18 44 -18 41 12 -16 28 50 -19 30 17 168 0 0 -17 29 8 16 25 51 19 234 -40 -16 47 31 -18 10 32 -15 57 17 -18 59 57 169 0 0 -16 57 13 16 25 47 18 234 -39 -16 15 18 -17 38 54 -15 24 43 -18 28 39 170 0 0 -16 24 18 16 25 43 17 234 -38 -15 42 5 -17 6 16 -14 51 8 -17 56 22 171 0 0 -15 50 22 16 25 40 15 233 -37 -15 7 51 -16 32 39 -14 16 31 -17 23 5 172 0 0 -15 15 24 16 25 37 14 233 -36 -14 32 35 -15 58 0 -13 40 51 -16 48 48 173 0 0 -14 39 25 16 25 34 13 233 -34 -13 56 16 -15 22 19 -13 4 9 -16 13 31 174 0 0 -14 2 22 16 25 31 12 233 -33 -13 18 53 -14 45 36 -12 26 22 -15 37 11 175 0 0 -13 24 16 16 25 28 11 232 -32 -12 40 26 -14 7 50 -11 47 30 -14 59 48 176 0 0 -12 45 5 16 25 26 10 232 -31 -12 0 55 -13 29 0 -11 7 32 -14 21 23 177 0 0 -12 4 49 16 25 24 9 232 -30 -11 20 17 -12 49 6 -10 26 29 -13 41 53 178 0 0 -11 23 28 16 25 22 7 232 -29 -10 38 34 -12 8 6 - 9 44 18 -13 1 18 179 0 0 -10 41 0 16 25 20 6 232 -28 - 9 55 43 -11 26 0 - 9 1 0 -12 19 39 180 0 0 - 9 57 25 16 25 19 5 231 -27 - 9 11 45 -10 42 48 - 8 16 34 -11 36 53 -179 0 0 - 9 12 43 16 25 18 4 231 -25 - 8 26 40 - 9 58 29 - 7 30 59 -10 53 2 -178 0 0 - 8 26 54 16 25 17 3 231 -24 - 7 40 26 - 9 13 3 - 6 44 15 -10 8 3 -177 0 0 - 7 39 56 16 25 17 1 231 -23 - 6 53 3 - 8 26 29 - 5 56 23 - 9 21 58 -176 0 0 - 6 51 49 16 25 16 0 231 -22 .. .. .. - 7 38 47 .. .. .. - 8 34 45 Uncertainty in time = +/- 8 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 7869-02053-1 * constellation : Scorpius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 17 05 53.7681 DE: -38 44 15.314 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .044, .046 ) * V mag [mag]: 10.4 * B mag [mag]: 10.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (469) Argentina approx. diameter [km]: 126 approx. diameter ["]: .083 distance from Earth [AU]: 2.10000 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 768 number of rejected observations: 75 time covered by the observations: 1907 Apr 04 - 2008 Feb 12 1 sigma uncertainty ellipse (major, minor, PA): 0.033, 0.016, 93° remarks: * orbital elements for (469) Argentina : Mean anomaly = 66.76338321 deg Arg. of pericenter = 206.22434433 deg Long. of node = 334.34672360 deg Inclination = 11.70314743 deg Eccentricity = 0.16746858 Semimajor axis = 3.16654384 AU Perihelion dist = 2.63624723 AU Mag: H = 8.63, G = 0.15 Epoch of elements : MJD 55015.69200000 TDT (2009 Jul 03.692) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jul 3 469 Argentina 16h 34.9m UT 10.4 17 5 53.768-38 44 15.31TYC 7869-02053-1 10.5 13.2 126 12.0 2.100 -1.856 11.65 85.9180 -38.740 -67.64 22.91 16.5814 0.15693 0.29352 -5.18958 2.78217 0.00230 0.00119 2000 65.7677702009 628.00000206.224344334.346724 11.7031470.16746858 3.1665438 2.6362472 8.6 5.00.15 RATE 1.7491450 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.055 0.048 91 1.60 0.049 0 54545.5020090703_2053-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 10:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org