IOTA/IOTA-ES occultation update for (15502) 1999 NV27 / TYC 0563-00437-1 event on 2012 Oct 13, 17:12 UT Visible from Russia, Europe Summary ------- On 2012 Oct 13 UT, the 51 km diameter asteroid (15502) 1999 NV27 will occult a 12.8 mag star in the constellation Aquarius for observers along a path across Russia, Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.7 mag to 17.5 mag (the magnitude of the asteroid) for at most 5.5 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 16 * date and approx. time of event: 2012 Oct 13, 17:05 - 2012 Oct 13, 17:17 UT * geocentric midpoint of event [JD]: 2456214.21780833 * magnitude of target star: 12.8 * magnitude drop [mag]: 4.7 * estimated maximum duration [s]: 5.5 * Moon: 5 % sunlit, 161° distance * Sun: 136° distance * rough path description: Russia, Europe The occultation path -------------------- * approximate projected width [km]: 76 * 1 sigma uncertainty interval [path widths]: +/- 4.11 * 1 sigma uncertainty interval [seconds]: +/- 49.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .122 +/- .097) * 1 sigma uncertainty ellipse (major, minor, PA): ( .143", .063", 55° ) * approx speed of asteroid's shadow [km/s]: 9.2093 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0563-00437-1 by 15502 1999 NV27 on 2012 Oct 13 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 3 0 0 31 50 47 17 17 40 35 111 -1 32 14 17 31 27 30 35 35 58 28 22 59 4 0 0 32 18 44 17 17 31 35 112 -2 32 42 21 31 55 20 36 5 11 28 49 57 5 0 0 32 47 8 17 17 21 36 113 -3 33 10 52 32 23 37 36 34 52 29 17 21 6 0 0 33 15 58 17 17 11 36 114 -3 33 39 50 32 52 19 37 5 1 29 45 10 7 0 0 33 45 14 17 17 1 37 115 -4 34 9 13 33 21 27 37 35 37 30 13 23 8 0 0 34 14 54 17 16 50 37 117 -5 34 39 1 33 51 0 38 6 39 30 42 1 9 0 0 34 44 58 17 16 40 38 118 -6 35 9 13 34 20 56 38 38 6 31 11 1 10 0 0 35 15 25 17 16 30 38 119 -7 35 39 48 34 51 15 39 9 58 31 40 24 11 0 0 35 46 14 17 16 19 39 120 -8 36 10 45 35 21 57 39 42 13 32 10 9 12 0 0 36 17 25 17 16 8 39 121 -8 36 42 5 35 53 0 40 14 50 32 40 14 13 0 0 36 48 57 17 15 58 39 123 -9 37 13 44 36 24 24 40 47 49 33 10 40 14 0 0 37 20 48 17 15 47 40 124 -10 37 45 44 36 56 7 41 21 9 33 41 24 15 0 0 37 52 58 17 15 36 40 125 -11 38 18 2 37 28 8 41 54 48 34 12 27 16 0 0 38 25 25 17 15 25 40 127 -12 38 50 38 38 0 28 42 28 46 34 43 48 17 0 0 38 58 10 17 15 14 41 128 -12 39 23 31 38 33 4 43 3 1 35 15 25 18 0 0 39 31 10 17 15 3 41 129 -13 39 56 40 39 5 56 43 37 32 35 47 17 19 0 0 40 4 25 17 14 52 41 131 -14 40 30 3 39 39 3 44 12 19 36 19 24 20 0 0 40 37 53 17 14 42 41 132 -14 41 3 40 40 12 23 44 47 19 36 51 45 21 0 0 41 11 34 17 14 31 41 133 -15 41 37 30 40 45 55 45 22 32 37 24 18 22 0 0 41 45 27 17 14 20 42 135 -16 42 11 31 41 19 40 45 57 56 37 57 3 23 0 0 42 19 29 17 14 9 42 136 -17 42 45 42 41 53 34 46 33 31 38 29 59 24 0 0 42 53 41 17 13 58 42 138 -17 43 20 2 42 27 37 47 9 14 39 3 4 25 0 0 43 28 0 17 13 47 42 139 -18 43 54 30 43 1 48 47 45 4 39 36 17 26 0 0 44 2 26 17 13 36 42 141 -18 44 29 4 43 36 6 48 21 0 40 9 38 27 0 0 44 36 57 17 13 25 42 142 -19 45 3 43 44 10 30 48 57 1 40 43 5 28 0 0 45 11 33 17 13 14 42 144 -20 45 38 27 44 44 57 49 33 5 41 16 37 29 0 0 45 46 11 17 13 4 42 145 -20 46 13 13 45 19 28 50 9 10 41 50 13 30 0 0 46 20 50 17 12 53 41 147 -21 46 48 0 45 54 0 50 45 15 42 23 51 31 0 0 46 55 30 17 12 43 41 148 -21 47 22 48 46 28 32 51 21 19 42 57 31 32 0 0 47 30 9 17 12 32 41 150 -22 47 57 34 47 3 3 51 57 20 43 31 12 33 0 0 48 4 45 17 12 22 41 151 -22 48 32 17 47 37 32 52 33 16 44 4 51 34 0 0 48 39 17 17 12 12 41 152 -23 49 6 56 48 11 58 53 9 5 44 38 29 35 0 0 49 13 44 17 12 2 41 154 -23 49 41 30 48 46 18 53 44 47 45 12 3 36 0 0 49 48 5 17 11 52 40 155 -24 50 15 57 49 20 33 54 20 20 45 45 33 37 0 0 50 22 17 17 11 42 40 157 -24 50 50 16 49 54 39 54 55 42 46 18 57 38 0 0 50 56 21 17 11 32 40 158 -25 51 24 26 50 28 37 55 30 51 46 52 15 39 0 0 51 30 14 17 11 23 39 159 -25 51 58 25 51 2 25 56 5 47 47 25 25 40 0 0 52 3 56 17 11 13 39 161 -25 52 32 12 51 36 1 56 40 27 47 58 25 41 0 0 52 37 24 17 11 4 39 162 -26 53 5 45 52 9 25 57 14 50 48 31 16 42 0 0 53 10 38 17 10 55 38 164 -26 53 39 4 52 42 35 57 48 54 49 3 55 43 0 0 53 43 37 17 10 46 38 165 -26 54 12 7 53 15 30 58 22 39 49 36 21 44 0 0 54 16 19 17 10 37 38 166 -27 54 44 52 53 48 8 58 56 3 50 8 34 45 0 0 54 48 44 17 10 29 37 167 -27 55 17 20 54 20 29 59 29 4 50 40 33 46 0 0 55 20 49 17 10 20 37 169 -27 55 49 28 54 52 32 60 1 41 51 12 15 47 0 0 55 52 34 17 10 12 36 170 -27 56 21 16 55 24 15 60 33 53 51 43 42 48 0 0 56 23 59 17 10 4 36 171 -28 56 52 42 55 55 37 61 5 39 52 14 50 49 0 0 56 55 1 17 9 56 36 173 -28 57 23 46 56 26 38 61 36 58 52 45 40 50 0 0 57 25 40 17 9 48 35 174 -28 57 54 27 56 57 16 62 7 49 53 16 11 51 0 0 57 55 55 17 9 41 35 175 -28 58 24 43 57 27 31 62 38 11 53 46 22 52 0 0 58 25 46 17 9 33 34 176 -28 58 54 33 57 57 22 63 8 2 54 16 11 53 0 0 58 55 11 17 9 26 34 177 -28 59 23 58 58 26 47 63 37 23 54 45 39 54 0 0 59 24 11 17 9 19 33 179 -28 59 52 57 58 55 47 64 6 12 55 14 44 55 0 0 59 52 43 17 9 13 33 180 -29 60 21 27 59 24 20 64 34 28 55 43 26 56 0 0 60 20 47 17 9 6 32 181 -29 60 49 30 59 52 27 65 2 12 56 11 44 57 0 0 60 48 24 17 9 0 32 182 -29 61 17 5 60 20 6 65 29 23 56 39 38 58 0 0 61 15 32 17 8 53 31 183 -29 61 44 10 60 47 17 65 56 1 57 7 6 59 0 0 61 42 12 17 8 47 31 184 -29 62 10 47 61 13 59 66 22 4 57 34 9 60 0 0 62 8 22 17 8 41 30 185 -29 62 36 53 61 40 13 66 47 33 58 0 47 61 0 0 62 34 2 17 8 36 30 186 -29 63 2 29 62 5 57 67 12 28 58 26 58 62 0 0 62 59 13 17 8 30 30 188 -29 63 27 36 62 31 12 67 36 49 58 52 42 63 0 0 63 23 54 17 8 25 29 189 -29 63 52 11 62 55 57 68 0 35 59 18 0 64 0 0 63 48 4 17 8 20 29 190 -29 64 16 17 63 20 13 68 23 46 59 42 50 65 0 0 64 11 44 17 8 15 28 191 -29 64 39 51 63 43 58 68 46 24 60 7 13 66 0 0 64 34 54 17 8 10 28 192 -29 65 2 55 64 7 14 69 8 28 60 31 9 67 0 0 64 57 34 17 8 5 27 193 -29 65 25 28 64 29 59 69 29 57 60 54 36 68 0 0 65 19 43 17 8 0 27 194 -29 65 47 31 64 52 15 69 50 54 61 17 37 69 0 0 65 41 22 17 7 56 26 195 -29 66 9 4 65 14 1 70 11 17 61 40 9 70 0 0 66 2 32 17 7 52 26 196 -29 66 30 6 65 35 17 70 31 7 62 2 13 71 0 0 66 23 11 17 7 48 25 197 -29 66 50 38 65 56 4 70 50 25 62 23 50 72 0 0 66 43 21 17 7 44 25 198 -28 67 10 40 66 16 21 71 9 11 62 44 59 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102 0 0 73 29 58 17 6 31 14 228 -25 73 53 6 73 7 2 77 11 12 70 5 4 103 0 0 73 38 5 17 6 29 14 229 -24 74 1 5 73 15 16 77 18 5 70 14 9 104 0 0 73 45 55 17 6 28 13 230 -24 74 8 49 73 23 13 77 24 43 70 22 56 105 0 0 73 53 29 17 6 27 13 231 -24 74 16 16 73 30 53 77 31 7 70 31 26 106 0 0 74 0 47 17 6 26 13 232 -24 74 23 27 73 38 18 77 37 17 70 39 38 107 0 0 74 7 49 17 6 24 12 233 -24 74 30 22 73 45 26 77 43 12 70 47 33 108 0 0 74 14 35 17 6 23 12 234 -24 74 37 2 73 52 18 77 48 55 70 55 11 109 0 0 74 21 6 17 6 22 12 235 -24 74 43 27 73 58 55 77 54 23 71 2 33 110 0 0 74 27 23 17 6 21 12 236 -23 74 49 38 74 5 18 77 59 39 71 9 38 111 0 0 74 33 24 17 6 20 11 237 -23 74 55 34 74 11 25 78 4 42 71 16 28 112 0 0 74 39 12 17 6 19 11 238 -23 75 1 16 74 17 18 78 9 33 71 23 1 113 0 0 74 44 45 17 6 18 11 239 -23 75 6 44 74 22 57 78 14 11 71 29 20 114 0 0 74 50 5 17 6 17 11 240 -23 75 11 58 74 28 21 78 18 37 71 35 23 115 0 0 74 55 11 17 6 16 10 241 -23 75 16 59 74 33 32 78 22 52 71 41 10 116 0 0 75 0 3 17 6 15 10 242 -23 75 21 47 74 38 30 78 26 56 71 46 43 117 0 0 75 4 43 17 6 14 10 243 -22 75 26 22 74 43 14 78 30 48 .. .. .. 118 0 0 75 9 10 17 6 14 9 243 -22 75 30 44 74 47 45 78 34 29 .. .. .. 119 0 0 75 13 23 17 6 13 9 244 -22 75 34 53 74 52 3 78 37 59 .. .. .. 120 0 0 75 17 25 17 6 12 9 245 -22 75 38 50 74 56 8 78 41 19 .. .. .. 121 0 0 75 21 14 17 6 11 9 246 -22 75 42 35 75 0 1 78 44 28 .. .. .. 122 0 0 75 24 50 17 6 11 8 247 -22 75 46 8 75 3 41 78 47 27 .. .. .. 123 0 0 75 28 15 17 6 10 8 248 -21 75 49 29 75 7 9 78 50 16 .. .. .. 124 0 0 75 31 28 17 6 9 8 249 -21 75 52 39 75 10 25 78 52 55 .. .. .. 125 0 0 75 34 29 17 6 9 8 250 -21 75 55 37 75 13 30 78 55 24 .. .. .. 126 0 0 75 37 18 17 6 8 7 251 -21 75 58 23 75 16 22 78 57 43 .. .. .. 127 0 0 75 39 56 17 6 8 7 252 -21 76 0 58 75 19 3 78 59 52 .. .. .. 128 0 0 75 42 23 17 6 7 7 253 -21 76 3 22 75 21 32 79 1 53 .. .. .. 129 0 0 75 44 38 17 6 6 7 254 -20 76 5 35 75 23 50 79 3 43 .. .. .. 130 0 0 75 46 42 17 6 6 6 255 -20 76 7 37 75 25 56 79 5 25 .. .. .. 131 0 0 75 48 35 17 6 5 6 256 -20 76 9 28 75 27 51 79 6 57 .. .. .. 132 0 0 75 50 17 17 6 5 6 257 -20 76 11 8 75 29 35 79 8 20 .. .. .. 133 0 0 75 51 49 17 6 5 6 258 -20 76 12 38 75 31 8 79 9 35 .. .. .. 134 0 0 75 53 9 17 6 4 5 259 -20 76 13 57 75 32 30 79 10 40 .. .. .. 135 0 0 75 54 19 17 6 4 5 260 -20 76 15 5 75 33 41 79 11 36 .. .. .. 136 0 0 75 55 17 17 6 3 5 261 -19 76 16 2 75 34 41 79 12 24 .. .. .. 137 0 0 75 56 5 17 6 3 5 262 -19 76 16 50 75 35 30 79 13 2 .. .. .. 138 0 0 75 56 43 17 6 3 4 263 -19 76 17 26 75 36 8 79 13 32 .. .. .. 139 0 0 75 57 10 17 6 2 4 264 -19 76 17 52 75 36 35 79 13 53 .. .. .. 140 0 0 75 57 26 17 6 2 4 265 -19 76 18 8 75 36 52 79 14 5 .. .. .. 141 0 0 75 57 32 17 6 2 4 266 -19 76 18 14 75 36 58 79 14 9 .. .. .. 142 0 0 75 57 27 17 6 1 4 267 -18 76 18 9 75 36 53 79 14 4 .. .. .. 143 0 0 75 57 11 17 6 1 3 268 -18 76 17 53 75 36 37 79 13 50 .. .. .. 144 0 0 75 56 45 17 6 1 3 269 -18 76 17 27 75 36 11 79 13 27 .. .. .. 145 0 0 75 56 8 17 6 1 3 270 -18 76 16 51 75 35 33 79 12 55 .. .. .. 146 0 0 75 55 20 17 6 0 3 271 -18 76 16 4 75 34 45 79 12 15 .. .. .. 147 0 0 75 54 22 17 6 0 2 272 -18 76 15 6 75 33 46 79 11 26 .. .. .. 148 0 0 75 53 13 17 6 0 2 273 -17 76 13 58 75 32 36 79 10 28 .. .. .. 149 0 0 75 51 53 17 6 0 2 273 -17 76 12 40 75 31 15 79 9 21 .. .. .. 150 0 0 75 50 22 17 6 0 2 274 -17 76 11 11 75 29 43 79 8 5 .. .. .. 151 0 0 75 48 41 17 6 0 1 275 -17 76 9 30 75 27 59 79 6 39 .. .. .. 152 0 0 75 46 48 17 6 0 1 276 -17 76 7 39 75 26 5 79 5 5 .. .. .. 153 0 0 75 44 44 17 5 59 1 277 -16 76 5 38 75 23 59 79 3 22 .. .. .. 154 0 0 75 42 29 17 5 59 1 278 -16 76 3 25 75 21 42 79 1 29 .. .. .. 155 0 0 75 40 2 17 5 59 0 279 -16 76 1 1 75 19 13 78 59 26 .. .. .. 156 0 0 75 37 25 17 5 59 0 280 -16 75 58 25 75 16 33 78 57 15 .. .. .. Uncertainty in time = +/- 50 secs Prediction of 2012 Jul 10.0 Data for the target star ------------------------ * name: TYC 0563-00437-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 22 20 10.4627 DE: +02 32 53.096 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .030, .030 ) * V mag [mag]: 12.8 * B mag [mag]: 13.2 * Apparent position with proper motion RA(deg): 335.2130711428 DE(deg): 2.6168105153 * Equation of equinoxes (radians) : 0.000060644313357 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (15502) 1999 NV27 approx. diameter [km]: 51 approx. diameter ["]: .016 distance from Earth [AU]: 4.43200 * orbital information: orbit source: Preston date of fit: 2012 Jul 09 source of used astrometry: MPC (via Astdys) number of used observations: 543 number of rejected observations: 8 time covered by the observations: 1982 Jan 30 - 2011 Nov 17 1 sigma uncertainty ellipse (major, minor, PA): 0.140, 0.057, 53° remarks: * orbital elements for (15502) 1999 NV27 : Mean anomaly = 225.27748855 deg Arg. of pericenter = 173.96006219 deg Long. of node = 308.71713226 deg Inclination = 16.81624592 deg Eccentricity = 0.01621202 Semimajor axis = 5.13599361 AU Perihelion dist = 5.05272878 AU Mag: H = 9.93, G = 0.15 Epoch of elements : MJD 56213.71700000 TDT (2012 Oct 13.717) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 13 15502 1999 NV27 17h 13.6m UT 12.8 22 20 10.463 2 32 53.10TYC 0563-00437-1 13.2 17.5 51 5.5 4.432 -0.610 -4.76 53.9662 2.550 -81.89 -8.11 17.2274 -0.34305 0.66016 -4.61141 -2.39871 0.00415 0.00065 2000 224.96274320121010.00000173.960062308.717132 16.8162460.01621202 5.1359936 5.052728810.1 5.00.15 RATE 0.8467740 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.143 0.063 55 5.11 0.065 0 0-3-4 056118.0020121013_0437-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Aug 26, 02:35 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org