IOTA/IOTA-ES occultation update for (130) Elektra / TYC 5660-00308-1 event on 2007 Nov 01, 02:57 UT Visible from Mexico, USA Summary ------- On 2007 Nov 01 UT, the 182 km diameter asteroid (130) Elektra will occult a 10.7 mag star in the constellation Ophiuchus for observers along a path across Mexico, USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.6 mag to 13.2 mag (the magnitude of the asteroid) for at most 4.9 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill Owen, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2007 Nov 01, 02:55 - 2007 Nov 01, 02:59 UT * magnitude of target star: 10.7 * magnitude drop [mag]: 2.6 * estimated maximum duration [s]: 4.9 * Moon: 58 % sunlit, 142° distance * Sun: 48° distance * rough path description: Mexico, USA The occultation path -------------------- * approximate projected width [km]: 281 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .024 +/- .021) * 1 sigma uncertainty ellipse (major, minor, PA): ( .024", .021", 94° ) * approx speed of asteroid's shadow [km/s]: 36.8472 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5660-00308-1 by 130 Elektra on 2007 Nov 01 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 111 0 0 64 27 31 2 55 43 0 112 10 .. .. .. .. .. .. .. .. .. .. .. .. 112 0 0 64 17 13 2 55 43 1 113 10 .. .. .. 65 40 25 .. .. .. .. .. .. 113 0 0 64 6 39 2 55 43 1 114 10 .. .. .. 65 30 4 .. .. .. 66 24 54 114 0 0 63 55 51 2 55 43 2 114 11 .. .. .. 65 19 28 .. .. .. 66 14 27 115 0 0 63 44 48 2 55 43 2 115 11 62 23 32 65 8 37 .. .. .. 66 3 44 116 0 0 63 33 29 2 55 43 3 116 11 62 12 2 64 57 31 .. .. .. 65 52 47 117 0 0 63 21 55 2 55 43 3 117 12 62 0 17 64 46 9 .. .. .. 65 41 34 118 0 0 63 10 6 2 55 43 4 118 12 61 48 16 64 34 32 .. .. .. 65 30 6 119 0 0 62 58 2 2 55 44 4 119 12 61 36 1 64 22 40 .. .. .. 65 18 22 120 0 0 62 45 42 2 55 44 5 120 13 61 23 30 64 10 32 .. .. .. 65 6 23 121 0 0 62 33 6 2 55 44 5 121 13 61 10 43 63 58 9 .. .. .. 64 54 8 122 0 0 62 20 16 2 55 44 6 122 13 60 57 41 63 45 30 .. .. .. 64 41 38 123 0 0 62 7 9 2 55 44 6 122 13 60 44 24 63 32 36 59 52 44 64 28 51 124 0 0 61 53 47 2 55 45 7 123 14 60 30 52 63 19 26 59 39 5 64 15 49 125 0 0 61 40 10 2 55 45 7 124 14 60 17 4 63 6 0 59 25 11 64 2 31 126 0 0 61 26 17 2 55 45 8 125 14 60 3 1 62 52 18 59 11 1 63 48 58 127 0 0 61 12 8 2 55 46 8 126 15 59 48 42 62 38 21 58 56 36 63 35 8 128 0 0 60 57 44 2 55 46 9 127 15 59 34 8 62 24 8 58 41 56 63 21 3 129 0 0 60 43 5 2 55 46 9 128 15 59 19 19 62 9 39 58 27 1 63 6 41 130 0 0 60 28 10 2 55 47 10 129 15 59 4 14 61 54 54 58 11 51 62 52 4 131 0 0 60 12 59 2 55 47 10 130 16 58 48 54 61 39 54 57 56 26 62 37 11 132 0 0 59 57 34 2 55 48 11 131 16 58 33 20 61 24 38 57 40 46 62 22 2 133 0 0 59 41 53 2 55 48 12 131 16 58 17 30 61 9 7 57 24 51 62 6 37 134 0 0 59 25 56 2 55 49 12 132 16 58 1 25 60 53 20 57 8 42 61 50 56 135 0 0 59 9 45 2 55 49 13 133 17 57 45 6 60 37 18 56 52 18 61 35 0 136 0 0 58 53 19 2 55 50 13 134 17 57 28 32 60 21 0 56 35 39 61 18 49 137 0 0 58 36 38 2 55 51 14 135 17 57 11 44 60 4 27 56 18 46 61 2 22 138 0 0 58 19 43 2 55 51 14 136 17 56 54 42 59 47 40 56 1 40 60 45 39 139 0 0 58 2 33 2 55 52 15 137 18 56 37 25 59 30 37 55 44 19 60 28 42 140 0 0 57 45 9 2 55 53 16 138 18 56 19 54 59 13 20 55 26 45 60 11 30 141 0 0 57 27 31 2 55 54 16 139 18 56 2 10 58 55 48 55 8 57 59 54 3 142 0 0 57 9 39 2 55 54 17 139 18 55 44 13 58 38 2 54 50 57 59 36 21 143 0 0 56 51 33 2 55 55 17 140 18 55 26 2 58 20 2 54 32 43 59 18 25 144 0 0 56 33 14 2 55 56 18 141 19 55 7 39 58 1 48 54 14 17 59 0 15 145 0 0 56 14 42 2 55 57 18 142 19 54 49 3 57 43 21 53 55 38 58 41 51 146 0 0 55 55 58 2 55 58 19 143 19 54 30 14 57 24 41 53 36 47 58 23 13 147 0 0 55 37 1 2 55 59 20 144 19 54 11 14 57 5 48 53 17 45 58 4 22 148 0 0 55 17 52 2 56 0 20 145 19 53 52 2 56 46 42 52 58 31 57 45 19 149 0 0 54 58 31 2 56 1 21 146 19 53 32 39 56 27 24 52 39 7 57 26 2 150 0 0 54 38 59 2 56 2 21 147 20 53 13 5 56 7 54 52 19 32 57 6 34 151 0 0 54 19 16 2 56 4 22 148 20 52 53 20 55 48 12 51 59 46 56 46 53 152 0 0 53 59 22 2 56 5 23 149 20 52 33 26 55 28 20 51 39 51 56 27 2 153 0 0 53 39 18 2 56 6 23 150 20 52 13 21 55 8 16 51 19 46 56 6 59 154 0 0 53 19 5 2 56 7 24 151 20 51 53 8 54 48 3 50 59 33 55 46 46 155 0 0 52 58 42 2 56 9 24 152 20 51 32 46 54 27 40 50 39 11 55 26 22 156 0 0 52 38 11 2 56 10 25 153 20 51 12 15 54 7 8 50 18 41 55 5 49 157 0 0 52 17 32 2 56 11 26 154 20 50 51 37 53 46 27 49 58 4 54 45 7 158 0 0 51 56 44 2 56 13 26 155 20 50 30 52 53 25 37 49 37 19 54 24 16 159 0 0 51 35 50 2 56 14 27 156 20 50 9 59 53 4 40 49 16 28 54 3 17 160 0 0 51 14 49 2 56 16 27 157 20 49 49 1 52 43 36 48 55 32 53 42 11 161 0 0 50 53 41 2 56 17 28 158 20 49 27 57 52 22 25 48 34 29 53 20 57 162 0 0 50 32 29 2 56 19 28 159 20 49 6 48 52 1 8 48 13 22 52 59 37 163 0 0 50 11 11 2 56 21 29 160 20 48 45 34 51 39 46 47 52 11 52 38 12 164 0 0 49 49 49 2 56 22 30 161 20 48 24 17 51 18 18 47 30 56 52 16 41 165 0 0 49 28 23 2 56 24 30 162 20 48 2 56 50 56 47 47 9 38 51 55 6 166 0 0 49 6 54 2 56 26 31 163 20 47 41 32 50 35 12 46 48 18 51 33 26 167 0 0 48 45 22 2 56 28 31 164 20 47 20 6 50 13 34 46 26 55 51 11 44 168 0 0 48 23 49 2 56 29 32 165 20 46 58 39 49 51 54 46 5 32 50 49 58 169 0 0 48 2 14 2 56 31 32 166 20 46 37 11 49 30 11 45 44 7 50 28 11 170 0 0 47 40 38 2 56 33 33 167 19 46 15 42 49 8 28 45 22 43 50 6 23 171 0 0 47 19 3 2 56 35 33 168 19 45 54 14 48 46 45 45 1 19 49 44 34 172 0 0 46 57 28 2 56 37 34 170 19 45 32 47 48 25 2 44 39 57 49 22 45 173 0 0 46 35 55 2 56 39 34 171 19 45 11 22 48 3 20 44 18 36 49 0 56 174 0 0 46 14 24 2 56 41 35 172 19 44 49 59 47 41 39 43 57 18 48 39 9 175 0 0 45 52 55 2 56 43 35 173 18 44 28 39 47 20 1 43 36 3 48 17 24 176 0 0 45 31 30 2 56 46 35 174 18 44 7 22 46 58 26 43 14 52 47 55 43 177 0 0 45 10 9 2 56 48 36 175 18 43 46 10 46 36 55 42 53 45 47 34 4 178 0 0 44 48 52 2 56 50 36 177 18 43 25 3 46 15 28 42 32 44 47 12 30 179 0 0 44 27 41 2 56 52 37 178 17 43 4 1 45 54 6 42 11 48 46 51 1 180 0 0 44 6 35 2 56 54 37 179 17 42 43 6 45 32 50 41 50 58 46 29 37 -179 0 0 43 45 37 2 56 57 37 180 17 42 22 17 45 11 40 41 30 15 46 8 19 -178 0 0 43 24 46 2 56 59 38 182 16 42 1 36 44 50 37 41 9 40 45 47 9 -177 0 0 43 4 2 2 57 1 38 183 16 41 41 3 44 29 42 40 49 14 45 26 6 -176 0 0 42 43 28 2 57 4 38 184 16 41 20 39 44 8 56 40 28 56 45 5 12 -175 0 0 42 23 2 2 57 6 39 185 15 41 0 24 43 48 19 40 8 47 44 44 26 -174 0 0 42 2 47 2 57 9 39 187 15 40 40 20 43 27 51 39 48 49 44 23 51 -173 0 0 41 42 41 2 57 11 39 188 14 40 20 26 43 7 34 39 29 1 44 3 25 -172 0 0 41 22 48 2 57 13 39 189 14 40 0 43 42 47 28 39 9 25 43 43 11 -171 0 0 41 3 5 2 57 16 40 191 13 39 41 11 42 27 34 38 50 0 43 23 8 -170 0 0 40 43 35 2 57 18 40 192 13 39 21 53 42 7 52 38 30 48 43 3 17 -169 0 0 40 24 18 2 57 21 40 193 13 39 2 47 41 48 23 38 11 49 42 43 39 -168 0 0 40 5 15 2 57 23 40 195 12 38 43 55 41 29 7 37 53 4 42 24 15 -167 0 0 39 46 25 2 57 26 40 196 12 38 25 16 41 10 5 37 34 32 42 5 5 -166 0 0 39 27 51 2 57 28 40 197 11 38 6 53 40 51 18 37 16 15 41 46 9 -165 0 0 39 9 31 2 57 31 40 199 10 37 48 44 40 32 46 36 58 13 41 27 29 -164 0 0 38 51 27 2 57 33 40 200 10 37 30 51 40 14 30 36 40 27 41 9 4 -163 0 0 38 33 39 2 57 36 40 202 9 37 13 15 39 56 30 36 22 57 40 50 56 -162 0 0 38 16 8 2 57 39 40 203 9 36 55 55 39 38 47 36 5 44 40 33 4 -161 0 0 37 58 54 2 57 41 40 204 8 36 38 52 39 21 21 35 48 47 40 15 30 -160 0 0 37 41 58 2 57 44 40 206 8 36 22 7 39 4 13 35 32 9 39 58 14 -159 0 0 37 25 20 2 57 46 40 207 7 36 5 39 38 47 23 35 15 48 39 41 16 -158 0 0 37 9 1 2 57 49 40 208 6 35 49 31 38 30 52 34 59 45 39 24 37 -157 0 0 36 53 0 2 57 51 40 209 6 35 33 41 38 14 40 34 44 2 39 8 17 -156 0 0 36 37 19 2 57 54 39 211 5 35 18 10 37 58 48 34 28 38 38 52 17 -155 0 0 36 21 58 2 57 56 39 212 4 35 3 0 37 43 16 34 13 33 38 36 37 -154 0 0 36 6 58 2 57 59 39 213 4 34 48 9 37 28 4 33 58 49 38 21 17 -153 0 0 35 52 18 2 58 1 39 215 3 34 33 39 37 13 13 33 44 25 38 6 19 -152 0 0 35 37 59 2 58 4 38 216 2 34 19 30 36 58 43 33 30 21 37 51 42 -151 0 0 35 24 1 2 58 6 38 217 2 34 5 42 36 44 35 33 16 39 37 37 27 -150 0 0 35 10 25 2 58 9 38 218 1 33 52 15 36 30 49 33 3 18 37 23 34 -149 0 0 34 57 12 2 58 11 38 219 0 33 39 11 36 17 25 32 50 19 37 10 3 -148 0 0 34 44 20 2 58 14 37 221 -1 33 26 29 36 4 24 32 37 42 36 56 55 -147 0 0 34 31 52 2 58 16 37 222 -1 33 14 9 35 51 46 32 25 28 36 44 10 -146 0 0 34 19 46 2 58 19 36 223 -2 33 2 12 35 39 31 32 13 36 36 31 49 -145 0 0 34 8 4 2 58 21 36 224 -3 32 50 38 35 27 40 32 2 7 36 19 52 -144 0 0 33 56 45 2 58 23 35 225 -4 32 39 27 35 16 13 31 51 1 36 8 18 -143 0 0 33 45 50 2 58 26 35 226 -4 32 28 40 35 5 9 31 40 19 35 57 9 -142 0 0 33 35 19 2 58 28 35 227 -5 32 18 17 34 54 30 31 30 0 35 46 24 -141 0 0 33 25 13 2 58 30 34 228 -6 32 8 18 34 44 16 31 20 5 35 36 4 -140 0 0 33 15 31 2 58 32 33 229 -7 31 58 43 34 34 26 31 10 35 35 26 9 -139 0 0 33 6 14 2 58 35 33 230 -7 31 49 32 34 25 1 31 1 28 35 16 40 -138 0 0 32 57 21 2 58 37 32 231 -8 31 40 46 34 16 2 30 52 46 35 7 35 -137 0 0 32 48 54 2 58 39 32 232 -9 31 32 25 34 7 28 30 44 29 34 58 57 -136 0 0 32 40 52 2 58 41 31 233 -10 31 24 29 33 59 19 30 36 36 34 50 44 -135 0 0 32 33 15 2 58 43 31 234 -11 31 16 58 33 51 37 30 29 9 34 42 57 -134 0 0 32 26 4 2 58 45 30 235 -12 31 9 53 33 44 20 30 22 6 34 35 36 -133 0 0 32 19 19 2 58 47 29 236 -12 31 3 12 33 37 29 30 15 29 34 28 41 -132 0 0 32 13 0 2 58 49 29 237 -13 30 56 58 33 31 4 30 9 18 34 22 13 -131 0 0 32 7 6 2 58 51 28 237 -14 30 51 9 33 25 6 30 3 31 34 16 12 -130 0 0 32 1 39 2 58 53 27 238 -15 30 45 46 33 19 34 29 58 11 34 10 37 -129 0 0 31 56 38 2 58 55 27 239 -16 30 40 48 33 14 29 29 53 16 34 5 29 -128 0 0 31 52 3 2 58 56 26 240 -17 30 36 17 33 9 50 29 48 46 34 0 47 -127 0 0 31 47 54 2 58 58 25 240 -17 30 32 12 33 5 38 29 44 43 33 56 33 -126 0 0 31 44 12 2 59 0 25 241 -18 30 28 33 33 1 53 29 41 6 33 52 45 -125 0 0 31 40 56 2 59 2 24 242 -19 30 25 20 32 58 34 29 37 54 33 49 25 -124 0 0 31 38 7 2 59 3 23 243 -20 30 22 33 32 55 43 29 35 9 33 46 32 -123 0 0 31 35 45 2 59 5 22 243 -21 30 20 12 32 53 18 29 32 49 33 44 5 -122 0 0 31 33 49 2 59 6 22 244 -22 30 18 18 32 51 20 29 30 56 33 42 6 -121 0 0 31 32 20 2 59 8 21 245 -22 30 16 50 32 49 50 29 29 29 33 40 35 -120 0 0 31 31 17 2 59 9 20 245 -23 30 15 48 32 48 46 29 28 28 33 39 30 -119 0 0 31 30 41 2 59 10 19 246 -24 30 15 13 32 48 9 29 27 53 33 38 53 -118 0 0 31 30 31 2 59 12 18 247 -25 30 15 4 32 47 59 29 27 44 33 38 43 -117 0 0 31 30 49 2 59 13 18 247 -26 30 15 21 32 48 16 29 28 2 33 39 0 -116 0 0 31 31 32 2 59 14 17 248 -27 30 16 5 32 49 0 29 28 45 33 39 44 -115 0 0 31 32 43 2 59 15 16 249 -28 30 17 14 32 50 11 29 29 54 33 40 55 -114 0 0 31 34 20 2 59 16 15 249 -28 30 18 50 32 51 49 29 31 30 33 42 34 -113 0 0 31 36 23 2 59 17 14 250 -29 30 20 53 32 53 54 29 33 31 33 44 39 -112 0 0 31 38 53 2 59 18 14 250 -30 30 23 21 32 56 25 29 35 59 33 47 12 -111 0 0 31 41 49 2 59 19 13 251 -31 30 26 15 32 59 23 29 38 52 33 50 11 -110 0 0 31 45 11 2 59 20 12 252 -32 30 29 35 33 2 48 29 42 11 33 53 38 -109 0 0 31 49 0 2 59 21 11 252 -33 30 33 21 33 6 39 29 45 55 33 57 31 -108 0 0 31 53 14 2 59 22 10 253 -34 30 37 33 33 10 57 29 50 5 34 1 51 -107 0 0 31 57 55 2 59 22 9 253 -34 30 42 11 33 15 41 29 54 41 34 6 37 -106 0 0 32 3 2 2 59 23 9 254 -35 30 47 14 33 20 51 29 59 42 34 11 49 -105 0 0 32 8 34 2 59 24 8 254 -36 30 52 42 33 26 27 30 5 9 34 17 29 -104 0 0 32 14 32 2 59 24 7 255 -37 30 58 36 33 32 30 .. .. .. 34 23 34 -103 0 0 32 20 55 2 59 24 6 255 -38 31 4 55 33 38 58 .. .. .. 34 30 5 -102 0 0 32 27 44 2 59 25 5 256 -39 31 11 40 33 45 51 .. .. .. 34 37 2 -101 0 0 32 34 58 2 59 25 4 256 -39 31 18 49 33 53 10 .. .. .. 34 44 25 -100 0 0 32 42 36 2 59 25 4 257 -40 .. .. .. 34 0 55 .. .. .. 34 52 13 - 99 0 0 32 50 40 2 59 26 3 258 -41 .. .. .. 34 9 5 .. .. .. 35 0 27 - 98 0 0 32 59 9 2 59 26 2 258 -42 .. .. .. 34 17 39 .. .. .. 35 9 6 - 97 0 0 33 8 1 2 59 26 1 259 -43 .. .. .. 34 26 38 .. .. .. 35 18 10 - 96 0 0 33 17 18 2 59 26 0 259 -43 .. .. .. .. .. .. .. .. .. .. .. .. Data for the target star ------------------------ * name: TYC 5660-00308-1 * constellation : Ophiuchus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 17 39 28.3252 DE: -08 56 36.162 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .020 ) * V mag [mag]: 10.7 * B mag [mag]: 11.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (130) Elektra approx. diameter [km]: 182 approx. diameter ["]: .067 distance from Earth [AU]: 3.72100 * orbital information: orbit source: Preston date of fit: 2007 Oct 23 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 919 number of rejected observations: 105 time covered by the observations: 1901 Apr 09 - 2007 Aug 08 1 sigma uncertainty ellipse (major, minor, PA): 0.012, 0.007, 106° remarks: * orbital elements for (130) Elektra : Mean anomaly = 279.91193015 deg Arg. of pericenter = 234.93471396 deg Long. of node = 145.48390843 deg Inclination = 22.85482409 deg Eccentricity = 0.20948833 Semimajor axis = 3.12528240 AU Perihelion dist = 2.47057221 AU Mag: H = 7.11, G = 0.15 Epoch of elements : MJD 54405.12300000 TDT (2007 Nov 01.123) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Nov 01 130 Elektra 2h 57.6m UT 10.7 17 39 28.325- 8 56 36.16TYC 5660-00308-1 11.9 13.2 182 4.9 3.721 3.187 -13.64 180.449 -8.939 131.52 -14.27 2.9595 .21157 .73218 19.98016 -5.77349 0.00436 0.00084 2000 278.99803820071027.00000234.934714145.483908 22.8548240.209488333.125282402.470572217.125 0.15 RATE 1.7838990 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.024 0.021 94.0 1.320 0.021 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Oct 23, 21:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org