IOTA/IOTA-ES occultation update for (1664) Felix / TYC 5591-00065-1 event on 2008 Feb 03, 10:38 UT Visible from Caribbean, USA Summary ------- On 2008 Feb 03 UT, the 29 km diameter asteroid (1664) Felix will occult a 11.5 mag star in the constellation Libra for observers along a path across Caribbean, USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.4 mag to 15.9 mag (the magnitude of the asteroid) for at most 1.5 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: 48 * date and approx. time of event: 2008 Feb 03, 10:33 - 2008 Feb 03, 10:43 UT * midpoint of event [JD]: 2454499.94347083 * magnitude of target star: 11.5 * magnitude drop [mag]: 4.4 * estimated maximum duration [s]: 1.5 * Moon: 14 % sunlit, 45° distance * Sun: 88° distance * rough path description: Caribbean, USA The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 1.34 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .042 +/- .034) * 1 sigma uncertainty ellipse (major, minor, PA): ( .043", .032", 111° ) * approx speed of asteroid's shadow [km/s]: 19.3397 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5591-00065-1 by 1664 Felix on 2008 Feb 03 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 -142 0 0 48 15 57 10 33 51 0 110 -57 48 6 20 48 25 35 .. .. .. .. .. .. -141 0 0 48 1 11 10 33 51 1 111 -57 47 51 33 48 10 51 .. .. .. 48 36 48 -140 0 0 47 46 5 10 33 51 2 111 -57 47 36 26 47 55 46 .. .. .. 48 21 46 -139 0 0 47 30 39 10 33 51 2 112 -56 47 20 58 47 40 20 .. .. .. 48 6 25 -138 0 0 47 14 52 10 33 51 3 113 -56 47 5 10 47 24 35 46 39 15 47 50 42 -137 0 0 46 58 45 10 33 52 4 114 -56 46 49 2 47 8 29 46 23 4 47 34 40 -136 0 0 46 42 18 10 33 52 4 114 -56 46 32 33 46 52 3 46 6 32 47 18 17 -135 0 0 46 25 30 10 33 53 5 115 -56 46 15 45 46 35 17 45 49 40 47 1 35 -134 0 0 46 8 23 10 33 53 6 116 -56 45 58 36 46 18 11 45 32 28 46 44 31 -133 0 0 45 50 55 10 33 54 7 117 -55 45 41 7 46 0 44 45 14 56 46 27 8 -132 0 0 45 33 7 10 33 54 7 117 -55 45 23 17 45 42 57 44 57 3 46 9 24 -131 0 0 45 14 58 10 33 55 8 118 -55 45 5 8 45 24 50 44 38 51 45 51 20 -130 0 0 44 56 30 10 33 56 9 119 -55 44 46 38 45 6 23 44 20 18 45 32 56 -129 0 0 44 37 42 10 33 56 10 119 -54 44 27 49 44 47 35 44 1 25 45 14 12 -128 0 0 44 18 33 10 33 57 11 120 -54 44 8 39 44 28 28 43 42 13 44 55 9 -127 0 0 43 59 5 10 33 58 11 121 -54 43 49 10 44 9 1 43 22 40 44 35 45 -126 0 0 43 39 17 10 33 59 12 122 -53 43 29 21 43 49 15 43 2 48 44 16 1 -125 0 0 43 19 10 10 34 1 13 122 -53 43 9 13 43 29 8 42 42 37 43 55 58 -124 0 0 42 58 43 10 34 2 14 123 -53 42 48 45 43 8 43 42 22 6 43 35 35 -123 0 0 42 37 57 10 34 3 15 124 -52 42 27 58 42 47 58 42 1 16 43 14 53 -122 0 0 42 16 52 10 34 5 15 124 -52 42 6 52 42 26 54 41 40 8 42 53 52 -121 0 0 41 55 28 10 34 6 16 125 -51 41 45 27 42 5 31 41 18 40 42 32 32 -120 0 0 41 33 46 10 34 8 17 126 -51 41 23 43 41 43 50 40 56 54 42 10 53 -119 0 0 41 11 45 10 34 9 18 127 -50 41 1 42 41 21 50 40 34 50 41 48 56 -118 0 0 40 49 26 10 34 11 19 127 -50 40 39 22 40 59 32 40 12 27 41 26 40 -117 0 0 40 26 49 10 34 13 19 128 -49 40 16 44 40 36 56 39 49 47 41 4 7 -116 0 0 40 3 55 10 34 15 20 129 -49 39 53 49 40 14 3 39 26 50 40 41 16 -115 0 0 39 40 44 10 34 17 21 129 -48 39 30 37 39 50 52 39 3 36 40 18 8 -114 0 0 39 17 16 10 34 19 22 130 -48 39 7 8 39 27 25 38 40 5 39 54 42 -113 0 0 38 53 31 10 34 21 23 131 -47 38 43 23 39 3 41 38 16 18 39 31 1 -112 0 0 38 29 31 10 34 24 24 132 -46 38 19 22 38 39 41 37 52 14 39 7 3 -111 0 0 38 5 15 10 34 26 25 132 -46 37 55 5 38 15 26 37 27 56 38 42 49 -110 0 0 37 40 43 10 34 29 25 133 -45 37 30 33 37 50 55 37 3 22 38 18 20 -109 0 0 37 15 57 10 34 31 26 134 -44 37 5 46 37 26 10 36 38 34 37 53 36 -108 0 0 36 50 57 10 34 34 27 135 -44 36 40 45 37 1 10 36 13 32 37 28 38 -107 0 0 36 25 43 10 34 37 28 135 -43 36 15 31 36 35 56 35 48 16 37 3 26 -106 0 0 36 0 16 10 34 40 29 136 -42 35 50 4 36 10 30 35 22 48 36 38 0 -105 0 0 35 34 37 10 34 43 30 137 -42 35 24 24 35 44 51 34 57 7 36 12 22 -104 0 0 35 8 45 10 34 46 31 138 -41 34 58 32 35 18 59 34 31 14 35 46 32 -103 0 0 34 42 42 10 34 49 32 138 -40 34 32 28 34 52 56 34 5 10 35 20 30 -102 0 0 34 16 28 10 34 52 32 139 -39 34 6 14 34 26 43 33 38 55 34 54 17 -101 0 0 33 50 4 10 34 56 33 140 -39 33 39 50 34 0 19 33 12 30 34 27 53 -100 0 0 33 23 30 10 34 59 34 141 -38 33 13 16 33 33 45 32 45 56 34 1 20 - 99 0 0 32 56 48 10 35 3 35 142 -37 32 46 34 33 7 3 32 19 13 33 34 38 - 98 0 0 32 29 57 10 35 7 36 142 -36 32 19 43 32 40 13 31 52 23 33 7 48 - 97 0 0 32 2 59 10 35 10 37 143 -35 31 52 45 32 13 15 31 25 25 32 40 50 - 96 0 0 31 35 55 10 35 14 38 144 -34 31 25 40 31 46 10 30 58 20 32 13 45 - 95 0 0 31 8 44 10 35 18 39 145 -34 30 58 30 31 18 59 30 31 10 31 46 34 - 94 0 0 30 41 28 10 35 22 39 146 -33 30 31 14 30 51 43 30 3 55 31 19 17 - 93 0 0 30 14 8 10 35 27 40 147 -32 30 3 54 30 24 22 29 36 36 30 51 56 - 92 0 0 29 46 44 10 35 31 41 148 -31 29 36 30 29 56 58 29 9 13 30 24 31 - 91 0 0 29 19 17 10 35 35 42 149 -30 29 9 4 29 29 31 28 41 47 29 57 3 - 90 0 0 28 51 48 10 35 40 43 150 -29 28 41 35 29 2 2 28 14 20 29 29 32 - 89 0 0 28 24 18 10 35 44 44 151 -28 28 14 6 28 34 31 27 46 51 29 2 1 - 88 0 0 27 56 47 10 35 49 45 152 -27 27 46 36 28 7 0 27 19 22 28 34 28 - 87 0 0 27 29 17 10 35 54 45 153 -26 27 19 6 27 39 29 26 51 54 28 6 56 - 86 0 0 27 1 48 10 35 59 46 154 -25 26 51 38 27 12 0 26 24 27 27 39 25 - 85 0 0 26 34 21 10 36 4 47 155 -24 26 24 11 26 44 32 25 57 2 27 11 56 - 84 0 0 26 6 57 10 36 9 48 156 -23 25 56 48 26 17 8 25 29 41 26 44 29 - 83 0 0 25 39 37 10 36 14 49 157 -22 25 29 28 25 49 47 25 2 23 26 17 6 - 82 0 0 25 12 21 10 36 19 49 159 -21 25 2 13 25 22 30 24 35 10 25 49 48 - 81 0 0 24 45 11 10 36 24 50 160 -20 24 35 4 24 55 19 24 8 3 25 22 34 - 80 0 0 24 18 7 10 36 29 51 161 -19 24 8 0 24 28 14 23 41 1 24 55 27 - 79 0 0 23 51 9 10 36 35 52 163 -18 23 41 4 24 1 16 23 14 7 24 28 27 - 78 0 0 23 24 20 10 36 40 52 164 -17 23 14 16 23 34 26 22 47 21 24 1 34 - 77 0 0 22 57 39 10 36 46 53 165 -16 22 47 36 23 7 44 22 20 44 23 34 50 - 76 0 0 22 31 8 10 36 51 54 167 -15 22 21 6 22 41 12 21 54 17 23 8 15 - 75 0 0 22 4 47 10 36 57 54 168 -14 21 54 46 22 14 50 21 27 59 22 41 50 - 74 0 0 21 38 37 10 37 3 55 170 -13 21 28 37 21 48 39 21 1 53 22 15 37 - 73 0 0 21 12 39 10 37 8 55 172 -12 21 2 40 21 22 40 20 35 59 21 49 35 - 72 0 0 20 46 54 10 37 14 56 173 -11 20 36 56 20 56 53 20 10 18 21 23 45 - 71 0 0 20 21 22 10 37 20 56 175 -10 20 11 24 20 31 20 19 44 49 20 58 9 - 70 0 0 19 56 4 10 37 26 57 177 -9 19 46 7 20 6 1 19 19 35 20 32 46 - 69 0 0 19 31 0 10 37 32 57 179 -8 19 21 5 19 40 56 18 54 36 20 7 39 - 68 0 0 19 6 12 10 37 37 58 180 -7 18 56 19 19 16 7 18 29 53 19 42 46 - 67 0 0 18 41 40 10 37 43 58 182 -6 18 31 48 18 51 34 18 5 25 19 18 10 - 66 0 0 18 17 26 10 37 49 59 184 -5 18 7 34 18 27 18 17 41 15 18 53 51 - 65 0 0 17 53 28 10 37 55 59 186 -4 17 43 38 18 3 19 17 17 22 18 29 49 - 64 0 0 17 29 49 10 38 1 59 188 -3 17 20 0 17 39 39 16 53 47 18 6 5 - 63 0 0 17 6 28 10 38 7 59 190 -2 16 56 41 17 16 17 16 30 31 17 42 40 - 62 0 0 16 43 27 10 38 13 60 192 -1 16 33 40 16 53 14 16 7 34 17 19 34 - 61 0 0 16 20 46 10 38 19 60 194 0 16 11 0 16 30 32 15 44 57 16 56 48 - 60 0 0 15 58 25 10 38 26 60 196 1 15 48 41 16 8 10 15 22 41 16 34 22 - 59 0 0 15 36 25 10 38 32 60 199 2 15 26 42 15 46 8 15 0 46 16 12 18 - 58 0 0 15 14 46 10 38 38 60 201 3 15 5 5 15 24 29 14 39 12 15 50 35 - 57 0 0 14 53 30 10 38 44 60 203 4 14 43 50 15 3 11 14 18 0 15 29 14 - 56 0 0 14 32 36 10 38 50 60 205 5 14 22 57 14 42 16 13 57 11 15 8 15 - 55 0 0 14 12 6 10 38 56 60 207 6 14 2 28 14 21 44 13 36 45 14 47 40 - 54 0 0 13 51 58 10 39 2 59 209 7 13 42 22 14 1 36 13 16 42 14 27 28 - 53 0 0 13 32 15 10 39 8 59 211 9 13 22 40 13 41 51 12 57 3 14 7 40 - 52 0 0 13 12 56 10 39 14 59 213 10 13 3 22 13 22 31 12 37 48 13 48 16 - 51 0 0 12 54 1 10 39 20 59 215 11 12 44 28 13 3 35 12 18 58 13 29 17 - 50 0 0 12 35 32 10 39 26 58 216 12 12 26 0 12 45 4 12 0 33 13 10 43 - 49 0 0 12 17 28 10 39 32 58 218 13 12 7 57 12 26 59 11 42 33 12 52 35 - 48 0 0 11 59 49 10 39 37 58 220 14 11 50 20 12 9 20 11 24 59 12 34 52 - 47 0 0 11 42 37 10 39 43 57 222 15 11 33 9 11 52 6 11 7 51 12 17 36 - 46 0 0 11 25 51 10 39 49 57 223 16 11 16 24 11 35 19 10 51 9 12 0 46 - 45 0 0 11 9 32 10 39 55 56 225 17 11 0 6 11 18 59 10 34 54 11 44 23 - 44 0 0 10 53 40 10 40 1 56 226 18 10 44 15 11 3 6 10 19 6 11 28 26 - 43 0 0 10 38 15 10 40 6 55 228 19 10 28 51 10 47 40 10 3 45 11 12 57 - 42 0 0 10 23 17 10 40 12 54 229 20 10 13 55 10 32 41 9 48 51 10 57 56 - 41 0 0 10 8 48 10 40 17 54 231 21 9 59 26 10 18 10 9 34 25 10 43 22 - 40 0 0 9 54 46 10 40 23 53 232 22 9 45 25 10 4 7 9 20 27 10 29 17 - 39 0 0 9 41 12 10 40 29 53 233 23 9 31 52 9 50 32 9 6 56 10 15 39 - 38 0 0 9 28 6 10 40 34 52 234 24 9 18 47 9 37 26 8 53 54 10 2 30 - 37 0 0 9 15 29 10 40 39 51 235 25 9 6 11 9 24 48 8 41 20 9 49 50 - 36 0 0 9 3 20 10 40 45 50 236 26 8 54 4 9 12 38 8 29 15 9 37 38 - 35 0 0 8 51 41 10 40 50 50 237 27 8 42 25 9 0 58 8 17 39 9 25 55 - 34 0 0 8 40 30 10 40 55 49 238 28 8 31 15 8 49 46 8 6 31 9 14 41 - 33 0 0 8 29 48 10 41 0 48 239 29 8 20 34 8 39 4 7 55 52 9 3 56 - 32 0 0 8 19 36 10 41 5 47 240 30 8 10 22 8 28 50 7 45 42 8 53 41 - 31 0 0 8 9 52 10 41 10 47 241 31 8 0 39 8 19 6 7 36 2 8 43 55 - 30 0 0 8 0 38 10 41 15 46 242 32 7 51 26 8 9 52 7 26 50 8 34 38 - 29 0 0 7 51 54 10 41 20 45 242 33 7 42 42 8 1 6 7 18 8 8 25 51 - 28 0 0 7 43 39 10 41 25 44 243 34 7 34 28 7 52 51 7 9 56 8 17 34 - 27 0 0 7 35 54 10 41 29 43 244 35 7 26 43 7 45 5 7 2 13 8 9 47 - 26 0 0 7 28 38 10 41 34 42 245 36 7 19 28 7 37 49 6 54 59 8 2 29 - 25 0 0 7 21 52 10 41 39 42 245 37 7 12 43 7 31 2 6 48 15 7 55 41 - 24 0 0 7 15 36 10 41 43 41 246 38 7 6 27 7 24 46 6 42 1 7 49 23 - 23 0 0 7 9 50 10 41 47 40 246 39 7 0 42 7 18 59 6 36 16 7 43 35 - 22 0 0 7 4 34 10 41 52 39 247 40 6 55 26 7 13 42 6 31 1 7 38 17 - 21 0 0 6 59 47 10 41 56 38 247 41 6 50 40 7 8 55 6 26 16 7 33 29 - 20 0 0 6 55 30 10 42 0 37 248 41 6 46 23 7 4 38 6 22 1 7 29 11 - 19 0 0 6 51 44 10 42 4 36 248 42 6 42 37 7 0 51 6 18 16 7 25 23 - 18 0 0 6 48 27 10 42 8 35 249 43 6 39 21 6 57 34 6 15 0 7 22 6 - 17 0 0 6 45 40 10 42 12 34 249 44 6 36 34 6 54 47 6 12 14 7 19 18 - 16 0 0 6 43 23 10 42 15 33 249 45 6 34 17 6 52 30 6 9 58 7 17 0 - 15 0 0 6 41 36 10 42 19 32 250 46 6 32 30 6 50 43 6 8 11 7 15 13 - 14 0 0 6 40 19 10 42 23 32 250 47 6 31 13 6 49 26 6 6 55 7 13 55 - 13 0 0 6 39 32 10 42 26 31 250 48 6 30 26 6 48 39 6 6 8 7 13 7 - 12 0 0 6 39 15 10 42 29 30 251 48 6 30 9 6 48 21 6 5 51 7 12 50 - 11 0 0 6 39 27 10 42 33 29 251 49 6 30 22 6 48 34 6 6 3 7 13 2 - 10 0 0 6 40 9 10 42 36 28 251 50 6 31 4 6 49 16 6 6 46 7 13 44 - 9 0 0 6 41 21 10 42 39 27 252 51 6 32 16 6 50 28 6 7 57 7 14 56 - 8 0 0 6 43 3 10 42 42 26 252 52 6 33 57 6 52 9 6 9 39 7 16 38 - 7 0 0 6 45 14 10 42 45 25 252 52 6 36 8 6 54 21 6 11 50 7 18 50 - 6 0 0 6 47 55 10 42 48 24 252 53 6 38 49 6 57 2 6 14 30 7 21 31 - 5 0 0 6 51 5 10 42 50 23 253 54 6 41 59 7 0 12 6 17 39 7 24 42 - 4 0 0 6 54 45 10 42 53 22 253 55 6 45 39 7 3 52 6 21 18 7 28 23 - 3 0 0 6 58 54 10 42 55 21 253 55 6 49 48 7 8 2 6 25 27 7 32 33 - 2 0 0 7 3 33 10 42 58 20 253 56 6 54 26 7 12 40 6 30 4 7 37 13 - 1 0 0 7 8 40 10 43 0 19 253 57 6 59 33 7 17 48 6 35 10 7 42 21 0 0 0 7 14 17 10 43 2 18 254 57 7 5 9 7 23 25 6 40 46 7 47 59 1 0 0 7 20 22 10 43 4 17 254 58 7 11 14 7 29 31 6 46 50 7 54 6 2 0 0 7 26 57 10 43 6 16 254 58 7 17 49 7 36 6 6 53 23 8 0 43 3 0 0 7 34 0 10 43 8 15 254 59 7 24 51 7 43 10 7 0 24 8 7 48 4 0 0 7 41 32 10 43 9 14 254 60 7 32 23 7 50 42 7 7 55 8 15 21 5 0 0 7 49 33 10 43 11 13 254 60 7 40 23 7 58 43 7 15 53 8 23 24 6 0 0 7 58 2 10 43 12 12 255 60 7 48 51 8 7 13 7 24 20 8 31 55 7 0 0 8 6 59 10 43 14 11 255 61 7 57 48 8 16 11 7 33 15 8 40 54 8 0 0 8 16 24 10 43 15 10 255 61 8 7 12 8 25 37 7 42 38 8 50 22 9 0 0 8 26 17 10 43 16 9 255 62 8 17 5 8 35 30 7 52 29 9 0 17 10 0 0 8 36 38 10 43 17 8 255 62 8 27 25 8 45 52 8 2 48 9 10 41 11 0 0 8 47 27 10 43 18 7 255 62 8 38 13 8 56 42 8 13 34 9 21 32 12 0 0 8 58 43 10 43 19 6 256 62 8 49 29 9 7 58 8 24 47 9 32 51 13 0 0 9 10 27 10 43 19 5 256 63 9 1 11 9 19 43 8 36 28 9 44 37 14 0 0 9 22 37 10 43 20 4 256 63 9 13 21 9 31 54 .. .. .. 9 56 51 15 0 0 9 35 14 10 43 20 3 256 63 9 25 57 9 44 32 .. .. .. 10 9 31 16 0 0 9 48 18 10 43 20 2 256 63 9 39 1 9 57 37 .. .. .. 10 22 38 17 0 0 10 1 49 10 43 21 1 256 63 9 52 30 10 11 8 .. .. .. 10 36 11 Data for the target star ------------------------ * name: TYC 5591-00065-1 * constellation : Libra * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 14 56 19.5817 DE: -13 07 32.165 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .021 ) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Apparent position with proper motion RA(deg): 224.1946751282 DE(deg): -13.1604978419 * Equation of equinoxes (radians) : 0.000045303417012 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1664) Felix approx. diameter [km]: 29 approx. diameter ["]: .024 distance from Earth [AU]: 1.66800 * orbital information: orbit source: Preston date of fit: 2008 Jan 02 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 770 number of rejected observations: 13 time covered by the observations: 1929 Feb 04 - 2007 Mar 09 1 sigma uncertainty ellipse (major, minor, PA): 0.038, 0.025, 117° remarks: * orbital elements for (1664) Felix : Mean anomaly = 27.67139187 deg Arg. of pericenter = 106.83153725 deg Long. of node = 44.32358742 deg Inclination = 6.11695146 deg Eccentricity = 0.22281948 Semimajor axis = 2.33930192 AU Perihelion dist = 1.81805989 AU Mag: H = 12.47, G = 0.15 Epoch of elements : MJD 54499.44300000 TDT (2008 Feb 03.443) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Feb 03 1664 Felix 10h 38.6m UT 11.5 14 56 19.582-13 7 32.16TYC 5591-00065-1 11.8 15.9 29 1.5 1.668 3.711 -19.38 -68.561 -13.120 23.79 -16.63 10.6433 .17010 .47227 10.27880 -3.67453 -0.00514 0.00155 2000 25.07012662008 125.00000106.831537 44.323587 6.1169510.222819482.339301921.8180598912.15 0.15 RATE 2.7547022 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.043 0.032 110.9 2.340 0.032 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Jan 04, 01:13 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org