IOTA/IOTA-ES occultation update for (19274) 1995 XA1 / HIP 73473 event on 2008 Jan 05, 13:41 UT Visible from SW USA Summary ------- On 2008 Jan 05 UT, the 9 km diameter asteroid (19274) 1995 XA1 will occult a 5.0 mag star in the constellation Libra for observers along a path across SW USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 13.8 mag to 18.8 mag (the magnitude of the asteroid) for at most 0.3 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: . The event at a glimpse ---------------------- * Rank: 6 * date and approx. time of event: 2008 Jan 05, 13:38 - 2008 Jan 05, 13:44 UT * magnitude of target star: 5.0 * magnitude drop [mag]: 13.8 * estimated maximum duration [s]: 0.3 * Moon: 8 % sunlit, 29° distance * Sun: 60° distance * rough path description: SW USA Additional comments ------------------- very wide double star (60") The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 11.26 * 1 sigma uncertainty interval [seconds]: +/- 5.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .064 +/- .049) * 1 sigma uncertainty ellipse (major, minor, PA): ( .067", .044", 116° ) * approx speed of asteroid's shadow [km/s]: 30.9557 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 73473 by 19274 1995 XA1 on 2008 Jan 05 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 ' " Latitude Latitude Latitude Latitude -164 0 0 47 3 8 13 38 26 0 103 -50 47 0 10 47 6 6 .. .. .. 48 13 20 -163 0 0 46 53 44 13 38 26 1 104 -50 46 50 46 46 56 42 .. .. .. 48 4 0 -162 0 0 46 44 5 13 38 26 2 104 -49 46 41 7 46 47 4 .. .. .. 47 54 26 -161 0 0 46 34 13 13 38 26 2 105 -48 46 31 14 46 37 11 .. .. .. 47 44 38 -160 0 0 46 24 6 13 38 26 3 106 -48 46 21 7 46 27 4 .. .. .. 47 34 36 -159 0 0 46 13 44 13 38 26 4 107 -47 46 10 46 46 16 43 .. .. .. 47 24 20 -158 0 0 46 3 9 13 38 27 5 107 -47 46 0 10 46 6 8 .. .. .. 47 13 50 -157 0 0 45 52 20 13 38 27 5 108 -46 45 49 20 45 55 19 .. .. .. 47 3 5 -156 0 0 45 41 16 13 38 27 6 109 -45 45 38 17 45 44 16 .. .. .. 46 52 7 -155 0 0 45 29 58 13 38 28 7 109 -45 45 26 59 45 32 58 44 20 0 46 40 54 -154 0 0 45 18 27 13 38 28 8 110 -44 45 15 27 45 21 27 44 8 24 46 29 28 -153 0 0 45 6 41 13 38 28 8 111 -43 45 3 41 45 9 42 43 56 33 46 17 47 -152 0 0 44 54 42 13 38 29 9 112 -43 44 51 42 44 57 43 43 44 29 46 5 53 -151 0 0 44 42 29 13 38 29 10 112 -42 44 39 29 44 45 30 43 32 12 45 53 45 -150 0 0 44 30 2 13 38 30 10 113 -41 44 27 2 44 33 3 43 19 40 45 41 23 -149 0 0 44 17 22 13 38 30 11 114 -41 44 14 21 44 20 23 43 6 55 45 28 48 -148 0 0 44 4 28 13 38 31 12 114 -40 44 1 27 44 7 29 42 53 56 45 15 59 -147 0 0 43 51 21 13 38 32 13 115 -39 43 48 19 43 54 22 42 40 44 45 2 56 -146 0 0 43 38 0 13 38 33 13 116 -39 43 34 59 43 41 2 42 27 19 44 49 40 -145 0 0 43 24 26 13 38 33 14 117 -38 43 21 25 43 27 28 42 13 41 44 36 11 -144 0 0 43 10 40 13 38 34 15 117 -37 43 7 38 43 13 41 41 59 49 44 22 29 -143 0 0 42 56 40 13 38 35 16 118 -37 42 53 38 42 59 42 41 45 45 44 8 34 -142 0 0 42 42 27 13 38 36 16 119 -36 42 39 25 42 45 29 41 31 28 43 54 26 -141 0 0 42 28 2 13 38 37 17 119 -35 42 24 59 42 31 4 41 16 58 43 40 5 -140 0 0 42 13 24 13 38 38 18 120 -34 42 10 21 42 16 27 41 2 16 43 25 32 -139 0 0 41 58 34 13 38 39 19 121 -34 41 55 31 42 1 37 40 47 22 43 10 46 -138 0 0 41 43 32 13 38 40 20 122 -33 41 40 29 41 46 35 40 32 15 42 55 48 -137 0 0 41 28 17 13 38 41 20 122 -32 41 25 14 41 31 21 40 16 57 42 40 38 -136 0 0 41 12 51 13 38 42 21 123 -31 41 9 48 41 15 55 40 1 27 42 25 16 -135 0 0 40 57 14 13 38 44 22 124 -31 40 54 10 41 0 17 39 45 46 42 9 43 -134 0 0 40 41 25 13 38 45 23 125 -30 40 38 21 40 44 28 39 29 53 41 53 58 -133 0 0 40 25 24 13 38 46 23 125 -29 40 22 21 40 28 28 39 13 49 41 38 1 -132 0 0 40 9 13 13 38 48 24 126 -28 40 6 9 40 12 17 38 57 34 41 21 54 -131 0 0 39 52 52 13 38 49 25 127 -27 39 49 47 39 55 56 38 41 9 41 5 35 -130 0 0 39 36 19 13 38 51 26 128 -27 39 33 15 39 39 24 38 24 34 40 49 6 -129 0 0 39 19 37 13 38 52 27 128 -26 39 16 32 39 22 41 38 7 48 40 32 27 -128 0 0 39 2 44 13 38 54 27 129 -25 38 59 40 39 5 49 37 50 53 40 15 38 -127 0 0 38 45 42 13 38 55 28 130 -24 38 42 38 38 48 47 37 33 48 39 58 39 -126 0 0 38 28 31 13 38 57 29 131 -23 38 25 26 38 31 36 37 16 34 39 41 30 -125 0 0 38 11 10 13 38 59 30 132 -22 38 8 6 38 14 15 36 59 11 39 24 12 -124 0 0 37 53 41 13 39 1 30 132 -22 37 50 36 37 56 46 36 41 39 39 6 45 -123 0 0 37 36 3 13 39 3 31 133 -21 37 32 58 37 39 9 36 24 0 38 49 10 -122 0 0 37 18 18 13 39 5 32 134 -20 37 15 13 37 21 23 36 6 12 38 31 26 -121 0 0 37 0 24 13 39 7 33 135 -19 36 57 19 37 3 30 35 48 16 38 13 35 -120 0 0 36 42 23 13 39 9 34 136 -18 36 39 18 36 45 29 35 30 14 37 55 35 -119 0 0 36 24 15 13 39 11 34 136 -17 36 21 10 36 27 21 35 12 4 37 37 29 -118 0 0 36 6 0 13 39 13 35 137 -17 36 2 55 36 9 6 34 53 48 37 19 15 -117 0 0 35 47 39 13 39 15 36 138 -16 35 44 34 35 50 45 34 35 26 37 0 55 -116 0 0 35 29 12 13 39 17 37 139 -15 35 26 7 35 32 18 34 16 58 36 42 29 -115 0 0 35 10 39 13 39 19 37 140 -14 35 7 34 35 13 45 33 58 24 36 23 57 -114 0 0 34 52 2 13 39 22 38 141 -13 34 48 56 34 55 7 33 39 46 36 5 20 -113 0 0 34 33 19 13 39 24 39 142 -12 34 30 13 34 36 25 33 21 3 35 46 38 -112 0 0 34 14 32 13 39 26 40 143 -11 34 11 27 34 17 38 33 2 16 35 27 51 -111 0 0 33 55 41 13 39 29 41 144 -10 33 52 36 33 58 47 32 43 25 35 9 1 -110 0 0 33 36 47 13 39 31 41 145 -9 33 33 41 33 39 53 32 24 31 34 50 6 -109 0 0 33 17 50 13 39 34 42 146 -9 33 14 44 33 20 55 32 5 34 34 31 8 -108 0 0 32 58 49 13 39 37 43 147 -8 32 55 44 33 1 55 31 46 34 34 12 8 -107 0 0 32 39 47 13 39 39 43 148 -7 32 36 42 32 42 53 31 27 33 33 53 5 -106 0 0 32 20 43 13 39 42 44 149 -6 32 17 38 32 23 49 31 8 29 33 34 0 -105 0 0 32 1 38 13 39 45 45 150 -5 31 58 33 32 4 44 30 49 25 33 14 53 -104 0 0 31 42 32 13 39 48 46 151 -4 31 39 27 31 45 37 30 30 20 32 55 46 -103 0 0 31 23 26 13 39 50 46 152 -3 31 20 20 31 26 31 30 11 16 32 36 38 -102 0 0 31 4 19 13 39 53 47 154 -2 31 1 14 31 7 25 29 52 11 32 17 30 -101 0 0 30 45 14 13 39 56 48 155 -1 30 42 8 30 48 19 29 33 7 31 58 23 -100 0 0 30 26 9 13 39 59 48 156 0 30 23 4 30 29 14 29 14 4 31 39 16 - 99 0 0 30 7 6 13 40 2 49 157 1 30 4 1 30 10 11 28 55 3 31 20 11 - 98 0 0 29 48 5 13 40 5 50 159 2 29 45 0 29 51 10 28 36 5 31 1 7 - 97 0 0 29 29 6 13 40 8 50 160 2 29 26 1 29 32 11 28 17 8 30 42 6 - 96 0 0 29 10 11 13 40 11 51 161 3 29 7 6 29 13 16 27 58 15 30 23 8 - 95 0 0 28 51 19 13 40 14 51 163 4 28 48 14 28 54 23 27 39 26 30 4 13 - 94 0 0 28 32 30 13 40 17 52 164 5 28 29 26 28 35 35 27 20 41 29 45 22 - 93 0 0 28 13 47 13 40 21 52 166 6 28 10 42 28 16 51 27 2 0 29 26 35 - 92 0 0 27 55 8 13 40 24 53 167 7 27 52 4 27 58 12 26 43 24 29 7 53 - 91 0 0 27 36 34 13 40 27 53 169 8 27 33 30 27 39 39 26 24 54 28 49 16 - 90 0 0 27 18 7 13 40 30 54 170 9 27 15 3 27 21 11 26 6 30 28 30 45 - 89 0 0 26 59 46 13 40 34 54 172 10 26 56 42 27 2 49 25 48 12 28 12 20 - 88 0 0 26 41 31 13 40 37 55 174 11 26 38 28 26 44 35 25 30 2 27 54 1 - 87 0 0 26 23 24 13 40 40 55 175 12 26 20 20 26 26 27 25 11 58 27 35 50 - 86 0 0 26 5 24 13 40 44 55 177 13 26 2 21 26 8 28 24 54 3 27 17 47 - 85 0 0 25 47 33 13 40 47 56 179 14 25 44 30 25 50 36 24 36 15 26 59 51 - 84 0 0 25 29 50 13 40 51 56 181 15 25 26 48 25 32 53 24 18 37 26 42 4 - 83 0 0 25 12 17 13 40 54 56 183 15 25 9 14 25 15 20 24 1 7 26 24 26 - 82 0 0 24 54 53 13 40 57 57 184 16 24 51 50 24 57 55 23 43 48 26 6 58 - 81 0 0 24 37 39 13 41 1 57 186 17 24 34 36 24 40 41 23 26 38 25 49 39 - 80 0 0 24 20 35 13 41 4 57 188 18 24 17 33 24 23 37 23 9 39 25 32 31 - 79 0 0 24 3 42 13 41 8 57 190 19 24 0 40 24 6 44 22 52 50 25 15 34 - 78 0 0 23 47 1 13 41 11 57 192 20 23 43 59 23 50 3 22 36 13 24 58 47 - 77 0 0 23 30 31 13 41 15 57 194 21 23 27 29 23 33 32 22 19 48 24 42 13 - 76 0 0 23 14 13 13 41 18 57 196 22 23 11 11 23 17 14 22 3 34 24 25 50 - 75 0 0 22 58 7 13 41 22 57 198 23 22 55 6 23 1 9 21 47 34 24 9 40 - 74 0 0 22 42 15 13 41 25 57 200 24 22 39 14 22 45 16 21 31 46 23 53 42 - 73 0 0 22 26 35 13 41 29 57 201 24 22 23 35 22 29 36 21 16 11 23 37 58 - 72 0 0 22 11 10 13 41 32 57 203 25 22 8 9 22 14 10 21 0 50 23 22 27 - 71 0 0 21 55 58 13 41 36 57 205 26 21 52 58 21 58 58 20 45 43 23 7 10 - 70 0 0 21 41 0 13 41 39 57 207 27 21 38 0 21 44 1 20 30 50 22 52 8 - 69 0 0 21 26 18 13 41 43 56 209 28 21 23 18 21 29 18 20 16 12 22 37 20 - 68 0 0 21 11 50 13 41 46 56 211 29 21 8 50 21 14 50 20 1 49 22 22 48 - 67 0 0 20 57 37 13 41 50 56 212 30 20 54 38 21 0 37 19 47 42 22 8 30 - 66 0 0 20 43 41 13 41 53 56 214 31 20 40 41 20 46 40 19 33 49 21 54 29 - 65 0 0 20 30 0 13 41 56 55 216 31 20 27 1 20 32 59 19 20 13 21 40 43 - 64 0 0 20 16 35 13 42 0 55 217 32 20 13 36 20 19 34 19 6 54 21 27 14 - 63 0 0 20 3 27 13 42 3 54 219 33 20 0 29 20 6 26 18 53 50 21 14 1 - 62 0 0 19 50 36 13 42 7 54 220 34 19 47 38 19 53 35 18 41 4 21 1 5 - 61 0 0 19 38 3 13 42 10 53 222 35 19 35 4 19 41 1 18 28 34 20 48 27 - 60 0 0 19 25 46 13 42 13 53 223 35 19 22 48 19 28 44 18 16 22 20 36 5 - 59 0 0 19 13 47 13 42 17 52 225 36 19 10 49 19 16 45 18 4 28 20 24 2 - 58 0 0 19 2 6 13 42 20 52 226 37 18 59 9 19 5 4 17 52 51 20 12 17 - 57 0 0 18 50 44 13 42 23 51 228 38 18 47 46 18 53 41 17 41 33 20 0 49 - 56 0 0 18 39 39 13 42 27 51 229 38 18 36 42 18 42 37 17 30 33 19 49 41 - 55 0 0 18 28 54 13 42 30 50 230 39 18 25 56 18 31 51 17 19 51 19 38 51 - 54 0 0 18 18 27 13 42 33 49 231 40 18 15 30 18 21 24 17 9 28 19 28 20 - 53 0 0 18 8 19 13 42 36 49 232 41 18 5 22 18 11 16 16 59 25 19 18 8 - 52 0 0 17 58 30 13 42 39 48 234 41 17 55 34 18 1 27 16 49 40 19 8 15 - 51 0 0 17 49 1 13 42 42 47 235 42 17 46 4 17 51 58 16 40 14 18 58 42 - 50 0 0 17 39 51 13 42 45 47 236 43 17 36 55 17 42 48 16 31 9 18 49 29 - 49 0 0 17 31 2 13 42 48 46 237 43 17 28 5 17 33 58 16 22 22 18 40 35 - 48 0 0 17 22 32 13 42 51 45 238 44 17 19 36 17 25 28 16 13 56 18 32 2 - 47 0 0 17 14 22 13 42 54 45 239 44 17 11 26 17 17 18 16 5 50 18 23 48 - 46 0 0 17 6 33 13 42 57 44 239 45 17 3 37 17 9 29 15 58 3 18 15 56 - 45 0 0 16 59 4 13 43 0 43 240 46 16 56 8 17 1 59 15 50 37 18 8 23 - 44 0 0 16 51 55 13 43 3 42 241 46 16 48 59 16 54 51 15 43 32 18 1 11 - 43 0 0 16 45 7 13 43 6 41 242 47 16 42 12 16 48 3 15 36 47 17 54 21 - 42 0 0 16 38 40 13 43 8 41 243 47 16 35 45 16 41 35 15 30 22 17 47 51 - 41 0 0 16 32 34 13 43 11 40 243 48 16 29 38 16 35 29 15 24 19 17 41 41 - 40 0 0 16 26 48 13 43 14 39 244 48 16 23 53 16 29 43 15 18 36 17 35 54 - 39 0 0 16 21 24 13 43 16 38 245 49 16 18 29 16 24 19 15 13 14 17 30 27 - 38 0 0 16 16 21 13 43 19 37 245 49 16 13 26 16 19 16 15 8 13 17 25 21 - 37 0 0 16 11 39 13 43 21 36 246 49 16 8 44 16 14 34 15 3 33 17 20 37 - 36 0 0 16 7 18 13 43 24 36 247 50 16 4 24 16 10 13 14 59 14 17 16 15 - 35 0 0 16 3 19 13 43 26 35 247 50 16 0 24 16 6 14 14 55 17 17 12 13 - 34 0 0 15 59 41 13 43 29 34 248 50 15 56 47 16 2 36 14 51 41 17 8 34 - 33 0 0 15 56 25 13 43 31 33 248 51 15 53 30 15 59 19 14 48 26 17 5 16 - 32 0 0 15 53 30 13 43 33 32 249 51 15 50 35 15 56 24 14 45 32 17 2 20 - 31 0 0 15 50 56 13 43 35 31 249 51 15 48 2 15 53 51 14 43 0 16 59 45 - 30 0 0 15 48 45 13 43 37 30 250 51 15 45 50 15 51 39 14 40 50 16 57 32 - 29 0 0 15 46 55 13 43 40 29 250 51 15 44 0 15 49 49 14 39 0 16 55 41 - 28 0 0 15 45 26 13 43 42 28 251 52 15 42 32 15 48 20 14 37 33 16 54 12 - 27 0 0 15 44 19 13 43 43 28 251 52 15 41 25 15 47 13 14 36 26 16 53 4 - 26 0 0 15 43 34 13 43 45 27 252 52 15 40 40 15 46 28 14 35 41 16 52 18 - 25 0 0 15 43 10 13 43 47 26 252 52 15 40 16 15 46 4 14 35 18 16 51 54 - 24 0 0 15 43 8 13 43 49 25 253 52 15 40 14 15 46 2 14 35 16 16 51 52 - 23 0 0 15 43 28 13 43 51 24 253 52 15 40 33 15 46 22 14 35 36 16 52 11 - 22 0 0 15 44 9 13 43 52 23 253 52 15 41 14 15 47 3 14 36 17 16 52 53 - 21 0 0 15 45 11 13 43 54 22 254 52 15 42 17 15 48 6 14 37 19 16 53 56 - 20 0 0 15 46 35 13 43 55 21 254 51 15 43 41 15 49 30 14 38 43 16 55 20 - 19 0 0 15 48 21 13 43 57 20 254 51 15 45 27 15 51 15 14 40 28 16 57 6 - 18 0 0 15 50 28 13 43 58 19 255 51 15 47 34 15 53 23 14 42 34 16 59 14 - 17 0 0 15 52 57 13 44 0 18 255 51 15 50 2 15 55 51 14 45 2 17 1 44 - 16 0 0 15 55 46 13 44 1 17 256 51 15 52 52 15 58 41 14 47 51 17 4 34 - 15 0 0 15 58 57 13 44 2 16 256 50 15 56 3 16 1 52 14 51 1 17 7 46 - 14 0 0 16 2 30 13 44 3 15 256 50 15 59 35 16 5 24 14 54 31 17 11 20 - 13 0 0 16 6 23 13 44 4 14 256 50 16 3 28 16 9 17 14 58 23 17 15 15 - 12 0 0 16 10 37 13 44 5 13 257 49 16 7 43 16 13 32 15 2 36 17 19 31 - 11 0 0 16 15 12 13 44 6 13 257 49 16 12 18 16 18 7 15 7 9 17 24 8 - 10 0 0 16 20 8 13 44 7 12 257 49 16 17 14 16 23 3 15 12 4 17 29 6 - 9 0 0 16 25 25 13 44 8 11 258 48 16 22 30 16 28 20 15 17 18 17 34 24 - 8 0 0 16 31 2 13 44 9 10 258 48 16 28 7 16 33 57 15 22 53 17 40 4 - 7 0 0 16 37 0 13 44 9 9 258 47 16 34 5 16 39 55 15 28 49 17 46 4 - 6 0 0 16 43 18 13 44 10 8 259 47 16 40 23 16 46 13 15 35 5 17 52 25 - 5 0 0 16 49 57 13 44 10 7 259 46 16 47 1 16 52 52 .. .. .. 17 59 6 - 4 0 0 16 56 55 13 44 11 6 259 46 16 54 0 16 59 51 .. .. .. 18 6 7 - 3 0 0 17 4 14 13 44 11 5 260 45 17 1 18 17 7 9 .. .. .. 18 13 28 - 2 0 0 17 11 52 13 44 11 4 260 44 17 8 56 17 14 47 .. .. .. 18 21 9 - 1 0 0 17 19 50 13 44 12 3 260 44 17 16 54 17 22 45 .. .. .. 18 29 10 0 0 0 17 28 7 13 44 12 2 260 43 17 25 11 17 31 3 .. .. .. 18 37 31 1 0 0 17 36 44 13 44 12 1 261 43 17 33 48 17 39 40 .. .. .. 18 46 11 2 0 0 17 45 39 13 44 12 0 261 42 17 42 43 17 48 36 .. .. .. .. .. .. Data for the target star ------------------------ * name: HIP 73473 * constellation : Libra * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 15 00 58.3134 DE: -08 31 08.226 * position source: mpos:HIP pm:HIP plx:HIP * standard error: RA,DE ["]: ( .014, .014 ) * V mag [mag]: 5.0 * B mag [mag]: 4.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (19274) 1995 XA1 approx. diameter [km]: 9 approx. diameter ["]: .004 distance from Earth [AU]: 3.47900 * orbital information: orbit source: Preston date of fit: 2007 Nov 01 source of used astrometry: MPC (via Astdys) number of used observations: 488 number of rejected observations: 5 time covered by the observations: 1990 Dec 09 - 2007 May 16 1 sigma uncertainty ellipse (major, minor, PA): 0.066, 0.042, 117° remarks: * orbital elements for (19274) 1995 XA1 : Mean anomaly = 114.77578621 deg Arg. of pericenter = 7.77507325 deg Long. of node = 78.82978028 deg Inclination = 12.09664108 deg Eccentricity = 0.07241996 Semimajor axis = 2.99535672 AU Perihelion dist = 2.77843310 AU Mag: H = 12.82, G = 0.15 Epoch of elements : MJD 54470.57000000 TDT (2008 Jan 05.570) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Jan 05 19274 1995 XA1 13h 41.3m UT 5.0 15 0 58.313- 8 31 8.23HIP 73473 4.9 18.8 9 0.3 3.479 2.877 -11.32 -84.620 -8.515 -24.02 -22.64 13.6886 .13964 .52200 16.88778 -4.48136 -0.00485 0.00190 2000 114.6674162008 1 5.00000 7.775073 78.829780 12.0966410.072419962.995356722.7784331012.85 0.15 RATE 1.9012150 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.067 0.044 115.812.260 0.040 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Jan 02, 23:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org