IOTA/IOTA-ES occultation update for (1994) Shane / HIP 109091 event on 2009 Nov 01, 12:19 UT Visible from Summary ------- On 2009 Nov 01 UT, the 25 km diameter asteroid (1994) Shane will occult a 8.7 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.7 mag to 15.4 mag (the magnitude of the asteroid) for at most 2.5 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: . The event at a glimpse ---------------------- * Rank: 29 * date and approx. time of event: 2009 Nov 01, 12:13 - 2009 Nov 01, 12:28 UT * magnitude of target star: 8.7 * magnitude drop [mag]: 6.7 * estimated maximum duration [s]: 2.5 * Moon: 98 % sunlit, 48° distance * Sun: 115° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 2.34 * 1 sigma uncertainty interval [seconds]: +/- 7.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .074 +/- .046) * 1 sigma uncertainty ellipse (major, minor, PA): ( .076", .044", 77° ) * approx speed of asteroid's shadow [km/s]: 10.1986 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 109091 by 1994 Shane on 2009 Nov 1 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 73 0 0 34 52 16 12 13 13 44 128 -1 34 44 41 34 59 51 34 9 18 35 35 29 74 0 0 34 42 37 12 13 20 45 129 -1 34 35 1 34 50 12 33 59 37 35 25 51 75 0 0 34 32 46 12 13 27 46 130 -2 34 25 10 34 40 22 33 49 44 35 16 2 76 0 0 34 22 43 12 13 35 47 131 -3 34 15 7 34 30 19 33 39 40 35 6 1 77 0 0 34 12 29 12 13 43 47 132 -4 34 4 53 34 20 6 33 29 24 34 55 49 78 0 0 34 2 4 12 13 51 48 133 -4 33 54 27 34 9 41 33 18 57 34 45 25 79 0 0 33 51 27 12 13 58 49 134 -5 33 43 51 33 59 5 33 8 19 34 34 51 80 0 0 33 40 40 12 14 6 50 135 -6 33 33 3 33 48 17 32 57 30 34 24 5 81 0 0 33 29 41 12 14 15 50 136 -7 33 22 4 33 37 19 32 46 30 34 13 9 82 0 0 33 18 32 12 14 23 51 137 -8 33 10 55 33 26 10 32 35 19 34 2 1 83 0 0 33 7 12 12 14 31 52 139 -8 32 59 34 33 14 51 32 23 57 33 50 43 84 0 0 32 55 42 12 14 40 53 140 -9 32 48 4 33 3 21 32 12 25 33 39 15 85 0 0 32 44 2 12 14 48 53 141 -10 32 36 23 32 51 41 32 0 43 33 27 36 86 0 0 32 32 11 12 14 57 54 142 -11 32 24 32 32 39 50 31 48 50 33 15 47 87 0 0 32 20 10 12 15 6 55 144 -12 32 12 31 32 27 50 31 36 48 33 3 48 88 0 0 32 8 0 12 15 15 55 145 -13 32 0 20 32 15 40 31 24 36 32 51 39 89 0 0 31 55 40 12 15 24 56 147 -13 31 48 0 32 3 20 31 12 14 32 39 21 90 0 0 31 43 10 12 15 33 57 148 -14 31 35 30 31 50 51 30 59 43 32 26 53 91 0 0 31 30 32 12 15 42 57 150 -15 31 22 51 31 38 12 30 47 2 32 14 16 92 0 0 31 17 44 12 15 51 58 151 -16 31 10 3 31 25 25 30 34 13 32 1 30 93 0 0 31 4 47 12 16 0 59 153 -17 30 57 6 31 12 29 30 21 15 31 48 35 94 0 0 30 51 42 12 16 10 59 155 -18 30 44 1 30 59 24 30 8 9 31 35 32 95 0 0 30 38 29 12 16 19 60 156 -19 30 30 48 30 46 11 29 54 54 31 22 20 96 0 0 30 25 8 12 16 29 60 158 -19 30 17 26 30 32 50 29 41 31 31 9 0 97 0 0 30 11 38 12 16 39 61 160 -20 30 3 56 30 19 21 29 28 0 30 55 32 98 0 0 29 58 2 12 16 49 61 162 -21 29 50 19 30 5 44 29 14 22 30 41 57 99 0 0 29 44 17 12 16 58 62 164 -22 29 36 35 29 52 0 29 0 36 30 28 14 100 0 0 29 30 26 12 17 8 62 166 -23 29 22 43 29 38 9 28 46 44 30 14 24 101 0 0 29 16 28 12 17 18 63 168 -24 29 8 45 29 24 11 28 32 45 30 0 27 102 0 0 29 2 23 12 17 28 63 170 -25 28 54 40 29 10 7 28 18 39 29 46 23 103 0 0 28 48 12 12 17 39 63 173 -26 28 40 29 28 55 56 28 4 27 29 32 14 104 0 0 28 33 55 12 17 49 64 175 -26 28 26 12 28 41 39 27 50 9 29 17 58 105 0 0 28 19 33 12 17 59 64 177 -27 28 11 49 28 27 17 27 35 45 29 3 36 106 0 0 28 5 5 12 18 9 64 180 -28 27 57 21 28 12 49 27 21 16 28 49 9 107 0 0 27 50 32 12 18 20 65 182 -29 27 42 47 27 58 16 27 6 42 28 34 37 108 0 0 27 35 54 12 18 30 65 185 -30 27 28 9 27 43 38 26 52 3 28 20 0 109 0 0 27 21 11 12 18 41 65 187 -31 27 13 27 27 28 56 26 37 20 28 5 18 110 0 0 27 6 25 12 18 51 65 190 -32 26 58 40 27 14 10 26 22 33 27 50 33 111 0 0 26 51 35 12 19 2 65 192 -33 26 43 50 26 59 20 26 7 42 27 35 43 112 0 0 26 36 41 12 19 12 65 195 -34 26 28 56 26 44 26 25 52 48 27 20 50 113 0 0 26 21 44 12 19 23 65 197 -35 26 13 59 26 29 29 25 37 51 27 5 54 114 0 0 26 6 44 12 19 33 65 200 -36 25 59 0 26 14 30 25 22 51 26 50 54 115 0 0 25 51 42 12 19 44 65 202 -37 25 43 57 25 59 28 25 7 48 26 35 53 116 0 0 25 36 38 12 19 54 65 205 -38 25 28 53 25 44 23 24 52 43 26 20 49 117 0 0 25 21 32 12 20 5 65 207 -39 25 13 47 25 29 18 24 37 37 26 5 43 118 0 0 25 6 25 12 20 16 64 210 -39 24 58 40 25 14 10 24 22 30 25 50 36 119 0 0 24 51 16 12 20 26 64 212 -40 24 43 31 24 59 2 24 7 21 25 35 27 120 0 0 24 36 7 12 20 37 64 214 -41 24 28 22 24 43 52 23 52 12 25 20 18 121 0 0 24 20 57 12 20 47 63 217 -42 24 13 12 24 28 43 23 37 3 25 5 8 122 0 0 24 5 48 12 20 58 63 219 -43 23 58 3 24 13 34 23 21 53 24 49 59 123 0 0 23 50 39 12 21 9 63 221 -44 23 42 54 23 58 24 23 6 44 24 34 50 124 0 0 23 35 31 12 21 19 62 223 -45 23 27 46 23 43 16 22 51 36 24 19 41 125 0 0 23 20 23 12 21 30 62 225 -46 23 12 39 23 28 9 22 36 29 24 4 34 126 0 0 23 5 18 12 21 40 61 227 -47 22 57 33 23 13 3 22 21 24 23 49 27 127 0 0 22 50 14 12 21 51 61 229 -48 22 42 29 22 57 59 22 6 21 23 34 23 128 0 0 22 35 12 12 22 1 60 231 -49 22 27 28 22 42 58 21 51 20 23 19 21 129 0 0 22 20 14 12 22 11 59 233 -50 22 12 29 22 27 59 21 36 22 23 4 22 130 0 0 22 5 18 12 22 22 59 234 -51 21 57 33 22 13 2 21 21 26 22 49 25 131 0 0 21 50 25 12 22 32 58 236 -52 21 42 41 21 58 10 21 6 34 22 34 31 132 0 0 21 35 36 12 22 42 57 238 -53 21 27 52 21 43 21 20 51 46 22 19 42 133 0 0 21 20 51 12 22 52 57 239 -54 21 13 7 21 28 36 20 37 2 22 4 56 134 0 0 21 6 11 12 23 2 56 241 -55 20 58 27 21 13 55 20 22 23 21 50 15 135 0 0 20 51 35 12 23 12 55 242 -56 20 43 51 20 59 19 20 7 48 21 35 38 136 0 0 20 37 4 12 23 22 55 243 -57 20 29 21 20 44 48 19 53 18 21 21 6 137 0 0 20 22 39 12 23 32 54 244 -58 20 14 56 20 30 23 19 38 54 21 6 40 138 0 0 20 8 20 12 23 42 53 246 -59 20 0 37 20 16 4 19 24 36 20 52 20 139 0 0 19 54 7 12 23 51 52 247 -60 19 46 24 20 1 50 19 10 24 20 38 6 140 0 0 19 40 0 12 24 1 51 248 -61 19 32 18 19 47 44 18 56 19 20 23 58 141 0 0 19 26 1 12 24 10 51 249 -62 19 18 18 19 33 44 18 42 21 20 9 57 142 0 0 19 12 8 12 24 19 50 250 -63 19 4 26 19 19 51 18 28 30 19 56 3 143 0 0 18 58 23 12 24 29 49 251 -64 18 50 41 19 6 6 18 14 46 19 42 17 144 0 0 18 44 46 12 24 38 48 252 -65 18 37 5 18 52 28 18 1 10 19 28 38 145 0 0 18 31 17 12 24 47 47 253 -66 18 23 36 18 38 59 17 47 43 19 15 8 146 0 0 18 17 57 12 24 56 46 254 -67 18 10 16 18 25 38 17 34 24 19 1 46 147 0 0 18 4 45 12 25 4 45 254 -68 17 57 4 18 12 26 17 21 14 18 48 32 148 0 0 17 51 42 12 25 13 45 255 -69 17 44 2 17 59 24 17 8 13 18 35 28 149 0 0 17 38 49 12 25 21 44 256 -70 17 31 9 17 46 30 16 55 21 18 22 33 150 0 0 17 26 6 12 25 30 43 257 -71 17 18 26 17 33 46 16 42 39 18 9 48 151 0 0 17 13 32 12 25 38 42 257 -72 17 5 52 17 21 12 16 30 7 17 57 13 152 0 0 17 1 8 12 25 46 41 258 -73 16 53 29 17 8 48 16 17 45 17 44 48 153 0 0 16 48 56 12 25 54 40 259 -74 16 41 16 16 56 35 16 5 34 17 32 33 154 0 0 16 36 53 12 26 1 39 259 -75 16 29 14 16 44 33 15 53 33 17 20 29 155 0 0 16 25 2 12 26 9 38 260 -76 16 17 24 16 32 41 15 41 44 17 8 36 156 0 0 16 13 22 12 26 16 37 260 -77 16 5 44 16 21 1 15 30 5 16 56 55 157 0 0 16 1 54 12 26 24 36 261 -78 15 54 16 16 9 32 15 18 39 16 45 24 158 0 0 15 50 37 12 26 31 35 262 -79 15 42 59 15 58 15 15 7 24 16 34 6 159 0 0 15 39 32 12 26 38 34 262 -80 15 31 55 15 47 10 14 56 21 16 22 59 160 0 0 15 28 40 12 26 44 33 262 -81 15 21 3 15 36 17 14 45 30 16 12 5 161 0 0 15 18 0 12 26 51 32 263 -82 15 10 23 15 25 37 14 34 52 16 1 23 162 0 0 15 7 32 12 26 57 31 263 -83 14 59 56 15 15 9 14 24 26 15 50 54 163 0 0 14 57 18 12 27 3 30 264 -84 14 49 41 15 4 54 14 14 13 15 40 38 164 0 0 14 47 16 12 27 9 29 264 -85 14 39 40 14 54 52 14 4 13 15 30 34 165 0 0 14 37 27 12 27 15 28 265 -86 14 29 52 14 45 3 13 54 26 15 20 44 166 0 0 14 27 52 12 27 21 28 265 -87 14 20 17 14 35 28 13 44 53 15 11 7 167 0 0 14 18 31 12 27 26 27 265 -88 14 10 56 14 26 6 13 35 33 15 1 44 168 0 0 14 9 23 12 27 32 26 266 -88 14 1 48 14 16 58 13 26 26 14 52 34 169 0 0 14 0 29 12 27 37 25 266 -89 13 52 54 14 8 4 13 17 34 14 43 39 170 0 0 13 51 49 12 27 42 24 266 -88 13 44 15 13 59 23 13 8 56 14 34 57 171 0 0 13 43 23 12 27 47 23 267 -88 13 35 49 13 50 57 13 0 32 14 26 30 172 0 0 13 35 12 12 27 51 22 267 -87 13 27 38 13 42 46 12 52 22 14 18 17 173 0 0 13 27 15 12 27 55 21 267 -86 13 19 41 13 34 48 12 44 26 14 10 18 174 0 0 13 19 32 12 28 0 20 268 -85 13 11 59 13 27 6 12 36 45 14 2 34 175 0 0 13 12 4 12 28 3 19 268 -84 13 4 32 13 19 38 12 29 19 13 55 5 176 0 0 13 4 51 12 28 7 18 268 -83 12 57 19 13 12 24 12 22 7 13 47 50 177 0 0 12 57 53 12 28 11 17 269 -82 12 50 21 13 5 26 12 15 11 13 40 51 178 0 0 12 51 10 12 28 14 16 269 -81 12 43 38 12 58 43 12 8 29 13 34 6 179 0 0 12 44 42 12 28 17 15 269 -80 12 37 11 12 52 14 12 2 3 13 27 37 180 0 0 12 38 29 12 28 20 14 269 -79 12 30 58 12 46 1 11 55 51 13 21 23 -179 0 0 12 32 32 12 28 23 13 270 -78 12 25 1 12 40 4 11 49 55 13 15 24 -178 0 0 12 26 50 12 28 25 12 270 -77 12 19 19 12 34 21 11 44 14 13 9 41 -177 0 0 12 21 23 12 28 28 11 270 -76 12 13 52 12 28 54 11 38 48 13 4 13 -176 0 0 12 16 12 12 28 30 10 270 -75 12 8 41 12 23 43 11 33 38 12 59 0 -175 0 0 12 11 16 12 28 32 9 270 -74 12 3 45 12 18 47 11 28 43 12 54 3 -174 0 0 12 6 36 12 28 34 8 271 -73 11 59 5 12 14 6 11 24 4 12 49 22 -173 0 0 12 2 11 12 28 35 7 271 -72 11 54 41 12 9 42 11 19 41 12 44 56 -172 0 0 11 58 2 12 28 36 6 271 -71 11 50 32 12 5 33 11 15 33 12 40 46 -171 0 0 11 54 9 12 28 38 5 271 -70 11 46 39 12 1 39 11 11 41 12 36 52 -170 0 0 11 50 32 12 28 38 4 272 -69 11 43 2 11 58 2 .. .. .. 12 33 14 -169 0 0 11 47 10 12 28 39 3 272 -68 11 39 41 11 54 40 .. .. .. 12 29 51 -168 0 0 11 44 4 12 28 40 2 272 -67 11 36 35 11 51 34 .. .. .. 12 26 45 -167 0 0 11 41 14 12 28 40 1 272 -66 11 33 45 11 48 44 .. .. .. 12 23 54 Uncertainty in time = +/- 8 secs [Prediction of 2008 Nov 16.0] Data for the target star ------------------------ * name: HIP 109091 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 22 05 54.0349 DE: +02 15 57.153 * position source: mpos:HIP2 pm:HIP2 plx:HIP2 * standard error: RA,DE ["]: ( .050, .022 ) * V mag [mag]: 8.7 * B mag [mag]: 10.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1994) Shane approx. diameter [km]: 25 approx. diameter ["]: .022 distance from Earth [AU]: 1.54200 * orbital information: orbit source: Preston date of fit: 2008 Nov 16 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 714 number of rejected observations: 9 time covered by the observations: 1939 Sep 14 - 2008 Jul 04 1 sigma uncertainty ellipse (major, minor, PA): 0.058, 0.038, 68° remarks: * orbital elements for (1994) Shane : Mean anomaly = 16.25875447 deg Arg. of pericenter = 88.77239326 deg Long. of node = 245.04766129 deg Inclination = 10.20553308 deg Eccentricity = 0.20948553 Semimajor axis = 2.67880295 AU Perihelion dist = 2.11763250 AU Mag: H = 12.26, G = 0.15 Epoch of elements : MJD 55136.51300000 TDT (2009 Nov 01.513) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 1 1994 Shane 12h 19.2m UT 8.7 22 5 54.035 2 15 57.15HIP 109091 10.2 15.4 25 2.5 1.542 2.133 -7.52 105.7531 2.269 -8.90 -14.57 12.3200 0.09526 0.40893 5.60303 -1.31990 0.00483 0.00129 2000 14.79464320091026.00000 88.772393245.047661 10.2055330.20948553 2.6788030 2.117632511.6 5.00.15 RATE 2.2479820 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.076 0.044 77 3.34 0.052 0 54786.5020091101_109091 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 16, 17:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org