IOTA/IOTA-ES occultation update for (6578) Zapesotskij / HIP 72239 event on 2009 Jun 06, 02:13 UT Visible from Summary ------- On 2009 Jun 06 UT, the 15 km diameter asteroid (6578) Zapesotskij will occult a 8.7 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.5 mag to 18.2 mag (the magnitude of the asteroid) for at most 1.6 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: 11 * date and approx. time of event: 2009 Jun 06, 02:05 - 2009 Jun 06, 02:19 UT * magnitude of target star: 8.7 * magnitude drop [mag]: 9.5 * estimated maximum duration [s]: 1.6 * Moon: 97 % sunlit, 17° distance * Sun: 147° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 6.28 * 1 sigma uncertainty interval [seconds]: +/- 12.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .082 +/- .070) * 1 sigma uncertainty ellipse (major, minor, PA): ( .083", .069", 105° ) * approx speed of asteroid's shadow [km/s]: 9.1372 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 72239 by 6578 Zapesotskij on 2009 Jun 6 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 -100 0 0 44 28 41 2 19 17 28 144 -1 44 34 57 44 22 27 45 54 41 43 5 0 - 99 0 0 44 12 54 2 19 11 28 144 -1 44 19 9 44 6 39 45 38 50 42 49 16 - 98 0 0 43 57 7 2 19 5 29 145 -2 44 3 22 43 50 53 45 22 59 42 33 33 - 97 0 0 43 41 22 2 18 58 30 146 -3 43 47 37 43 35 8 45 7 10 42 17 52 - 96 0 0 43 25 39 2 18 52 30 147 -4 43 31 53 43 19 25 44 51 22 42 2 12 - 95 0 0 43 9 57 2 18 45 31 148 -4 43 16 11 43 3 44 44 35 36 41 46 35 - 94 0 0 42 54 18 2 18 38 31 149 -5 43 0 32 42 48 5 44 19 53 41 31 1 - 93 0 0 42 38 42 2 18 31 32 150 -6 42 44 56 42 32 30 44 4 12 41 15 30 - 92 0 0 42 23 10 2 18 24 33 151 -6 42 29 23 42 16 57 43 48 34 41 0 1 - 91 0 0 42 7 40 2 18 17 33 152 -7 42 13 53 42 1 28 43 32 59 40 44 37 - 90 0 0 41 52 15 2 18 9 34 153 -8 41 58 27 41 46 3 43 17 28 40 29 17 - 89 0 0 41 36 54 2 18 2 34 154 -9 41 43 6 41 30 43 43 2 2 40 14 1 - 88 0 0 41 21 37 2 17 54 35 155 -9 41 27 49 41 15 26 42 46 39 39 58 49 - 87 0 0 41 6 26 2 17 47 35 156 -10 41 12 37 41 0 15 42 31 22 39 43 43 - 86 0 0 40 51 19 2 17 39 36 157 -11 40 57 30 40 45 10 42 16 10 39 28 42 - 85 0 0 40 36 19 2 17 31 36 158 -11 40 42 29 40 30 9 42 1 3 39 13 47 - 84 0 0 40 21 24 2 17 23 37 159 -12 40 27 34 40 15 15 41 46 3 38 58 58 - 83 0 0 40 6 36 2 17 14 37 160 -13 40 12 46 40 0 27 41 31 8 38 44 16 - 82 0 0 39 51 55 2 17 6 38 161 -14 39 58 4 39 45 46 41 16 21 38 29 40 - 81 0 0 39 37 20 2 16 58 38 162 -14 39 43 29 39 31 12 41 1 40 38 15 11 - 80 0 0 39 22 53 2 16 49 39 164 -15 39 29 1 39 16 46 40 47 6 38 0 50 - 79 0 0 39 8 33 2 16 40 39 165 -16 39 14 41 39 2 26 40 32 40 37 46 36 - 78 0 0 38 54 22 2 16 32 40 166 -16 39 0 29 38 48 15 40 18 22 37 32 31 - 77 0 0 38 40 19 2 16 23 40 167 -17 38 46 25 38 34 13 40 4 13 37 18 34 - 76 0 0 38 26 24 2 16 14 40 168 -18 38 32 30 38 20 19 39 50 12 37 4 45 - 75 0 0 38 12 39 2 16 5 41 169 -18 38 18 44 38 6 33 39 36 20 36 51 5 - 74 0 0 37 59 2 2 15 56 41 171 -19 38 5 7 37 52 58 39 22 37 36 37 35 - 73 0 0 37 45 35 2 15 47 41 172 -20 37 51 40 37 39 31 39 9 3 36 24 14 - 72 0 0 37 32 18 2 15 38 42 173 -20 37 38 23 37 26 15 38 55 40 36 11 3 - 71 0 0 37 19 12 2 15 28 42 174 -21 37 25 15 37 13 8 38 42 26 35 58 3 - 70 0 0 37 6 15 2 15 19 42 176 -21 37 12 19 37 0 12 38 29 23 35 45 12 - 69 0 0 36 53 29 2 15 9 43 177 -22 36 59 32 36 47 27 38 16 31 35 32 33 - 68 0 0 36 40 55 2 15 0 43 178 -23 36 46 57 36 34 53 38 3 50 35 20 4 - 67 0 0 36 28 31 2 14 50 43 179 -23 36 34 33 36 22 30 37 51 20 35 7 46 - 66 0 0 36 16 19 2 14 41 43 181 -24 36 22 21 36 10 18 37 39 2 34 55 40 - 65 0 0 36 4 19 2 14 31 43 182 -24 36 10 20 35 58 19 37 26 55 34 43 46 - 64 0 0 35 52 31 2 14 22 44 183 -25 35 58 32 35 46 31 37 15 1 34 32 3 - 63 0 0 35 40 55 2 14 12 44 185 -26 35 46 55 35 34 55 37 3 19 34 20 33 - 62 0 0 35 29 32 2 14 2 44 186 -26 35 35 32 35 23 32 36 51 50 34 9 16 - 61 0 0 35 18 21 2 13 52 44 187 -27 35 24 21 35 12 22 36 40 33 33 58 11 - 60 0 0 35 7 24 2 13 43 44 189 -27 35 13 23 35 1 25 36 29 30 33 47 18 - 59 0 0 34 56 39 2 13 33 44 190 -28 35 2 38 34 50 41 36 18 39 33 36 40 - 58 0 0 34 46 8 2 13 23 44 191 -28 34 52 7 34 40 11 36 8 3 33 26 14 - 57 0 0 34 35 51 2 13 13 44 193 -29 34 41 49 34 29 54 35 57 40 33 16 2 - 56 0 0 34 25 48 2 13 3 44 194 -29 34 31 45 34 19 51 35 47 31 33 6 4 - 55 0 0 34 15 59 2 12 53 44 195 -30 34 21 56 34 10 3 35 37 37 32 56 20 - 54 0 0 34 6 24 2 12 44 44 197 -30 34 12 21 34 0 28 35 27 57 32 46 50 - 53 0 0 33 57 4 2 12 34 44 198 -31 34 3 0 33 51 8 35 18 31 32 37 35 - 52 0 0 33 47 58 2 12 24 44 199 -31 33 53 54 33 42 3 35 9 20 32 28 34 - 51 0 0 33 39 8 2 12 14 44 201 -31 33 45 3 33 33 13 35 0 25 32 19 48 - 50 0 0 33 30 32 2 12 4 44 202 -32 33 36 27 33 24 37 34 51 44 32 11 16 - 49 0 0 33 22 12 2 11 54 43 203 -32 33 28 6 33 16 17 34 43 19 32 3 0 - 48 0 0 33 14 7 2 11 45 43 204 -33 33 20 1 33 8 13 34 35 10 31 55 0 - 47 0 0 33 6 17 2 11 35 43 206 -33 33 12 12 33 0 24 34 27 16 31 47 14 - 46 0 0 32 58 44 2 11 25 43 207 -33 33 4 38 32 52 51 34 19 39 31 39 45 - 45 0 0 32 51 26 2 11 16 42 208 -33 32 57 20 32 45 33 34 12 17 31 32 31 - 44 0 0 32 44 25 2 11 6 42 209 -34 32 50 18 32 38 32 34 5 12 31 25 33 - 43 0 0 32 37 40 2 10 57 42 211 -34 32 43 33 32 31 47 33 58 23 31 18 51 - 42 0 0 32 31 11 2 10 47 42 212 -34 32 37 3 32 25 18 33 51 50 31 12 26 - 41 0 0 32 24 58 2 10 38 41 213 -35 32 30 51 32 19 6 33 45 34 31 6 16 - 40 0 0 32 19 2 2 10 28 41 214 -35 32 24 55 32 13 11 33 39 35 31 0 24 - 39 0 0 32 13 24 2 10 19 40 215 -35 32 19 16 32 7 32 33 33 54 30 54 47 - 38 0 0 32 8 2 2 10 10 40 216 -35 32 13 53 32 2 10 33 28 29 30 49 28 - 37 0 0 32 2 56 2 10 0 40 217 -35 32 8 48 31 57 5 33 23 21 30 44 26 - 36 0 0 31 58 9 2 9 51 39 218 -35 32 4 0 31 52 18 33 18 31 30 39 40 - 35 0 0 31 53 38 2 9 42 39 220 -36 31 59 29 31 47 47 33 13 58 30 35 12 - 34 0 0 31 49 25 2 9 33 38 221 -36 31 55 16 31 43 34 33 9 42 30 31 0 - 33 0 0 31 45 29 2 9 25 38 222 -36 31 51 20 31 39 38 33 5 44 30 27 6 - 32 0 0 31 41 51 2 9 16 37 223 -36 31 47 42 31 36 0 33 2 4 30 23 30 - 31 0 0 31 38 30 2 9 7 37 224 -36 31 44 21 31 32 40 32 58 42 30 20 11 - 30 0 0 31 35 27 2 8 59 36 225 -36 31 41 18 31 29 37 32 55 38 30 17 9 - 29 0 0 31 32 42 2 8 50 36 226 -36 31 38 33 31 26 52 32 52 52 30 14 25 - 28 0 0 31 30 15 2 8 42 35 226 -36 31 36 6 31 24 25 32 50 24 30 11 59 - 27 0 0 31 28 6 2 8 34 34 227 -36 31 33 57 31 22 16 32 48 14 30 9 50 - 26 0 0 31 26 15 2 8 25 34 228 -36 31 32 5 31 20 25 32 46 22 30 8 0 - 25 0 0 31 24 42 2 8 17 33 229 -36 31 30 32 31 18 52 32 44 49 30 6 27 - 24 0 0 31 23 27 2 8 10 33 230 -35 31 29 17 31 17 37 32 43 34 30 5 12 - 23 0 0 31 22 30 2 8 2 32 231 -35 31 28 21 31 16 40 32 42 37 30 4 16 - 22 0 0 31 21 52 2 7 54 31 232 -35 31 27 42 31 16 2 32 41 59 30 3 37 - 21 0 0 31 21 32 2 7 47 31 232 -35 31 27 22 31 15 42 32 41 39 30 3 17 - 20 0 0 31 21 30 2 7 39 30 233 -35 31 27 21 31 15 40 32 41 38 30 3 15 - 19 0 0 31 21 47 2 7 32 29 234 -35 31 27 37 31 15 57 32 41 56 30 3 30 - 18 0 0 31 22 22 2 7 25 29 235 -34 31 28 13 31 16 32 32 42 32 30 4 5 - 17 0 0 31 23 15 2 7 18 28 236 -34 31 29 6 31 17 25 32 43 26 30 4 57 - 16 0 0 31 24 27 2 7 12 27 236 -34 31 30 18 31 18 37 32 44 40 30 6 7 - 15 0 0 31 25 58 2 7 5 27 237 -34 31 31 49 31 20 7 32 46 12 30 7 36 - 14 0 0 31 27 47 2 6 58 26 238 -33 31 33 38 31 21 56 32 48 2 30 9 24 - 13 0 0 31 29 54 2 6 52 25 238 -33 31 35 45 31 24 3 32 50 12 30 11 29 - 12 0 0 31 32 20 2 6 46 24 239 -33 31 38 11 31 26 29 32 52 40 30 13 53 - 11 0 0 31 35 4 2 6 40 24 240 -32 31 40 56 31 29 13 32 55 26 30 16 35 - 10 0 0 31 38 7 2 6 34 23 240 -32 31 43 59 31 32 16 32 58 32 30 19 35 - 9 0 0 31 41 28 2 6 29 22 241 -32 31 47 20 31 35 37 33 1 56 30 22 54 - 8 0 0 31 45 7 2 6 23 21 242 -31 31 51 0 31 39 16 33 5 38 30 26 30 - 7 0 0 31 49 5 2 6 18 21 242 -31 31 54 58 31 43 14 33 9 39 30 30 25 - 6 0 0 31 53 22 2 6 13 20 243 -30 31 59 14 31 47 30 33 13 59 30 34 39 - 5 0 0 31 57 56 2 6 8 19 244 -30 32 3 49 31 52 4 33 18 37 30 39 10 - 4 0 0 32 2 49 2 6 3 18 244 -29 32 8 42 31 56 56 33 23 34 30 43 59 - 3 0 0 32 8 0 2 5 59 18 245 -29 32 13 53 32 2 7 33 28 49 30 49 6 - 2 0 0 32 13 29 2 5 55 17 246 -28 32 19 23 32 7 36 33 34 22 30 54 32 - 1 0 0 32 19 16 2 5 50 16 246 -28 32 25 10 32 13 23 33 40 13 31 0 15 0 0 0 32 25 21 2 5 47 15 247 -27 32 31 16 32 19 27 33 46 23 31 6 16 1 0 0 32 31 44 2 5 43 14 247 -27 32 37 39 32 25 50 33 52 50 31 12 34 2 0 0 32 38 25 2 5 39 14 248 -26 32 44 20 32 32 30 33 59 36 31 19 11 3 0 0 32 45 23 2 5 36 13 248 -26 32 51 19 32 39 28 34 6 39 31 26 4 4 0 0 32 52 39 2 5 33 12 249 -25 32 58 35 32 46 44 34 14 0 31 33 16 5 0 0 33 0 13 2 5 30 11 250 -24 33 6 9 32 54 17 34 21 39 31 40 44 6 0 0 33 8 4 2 5 27 10 250 -24 33 14 0 33 2 8 34 29 35 31 48 30 7 0 0 33 16 12 2 5 25 9 251 -23 33 22 9 33 10 15 34 37 49 31 56 33 8 0 0 33 24 37 2 5 22 9 251 -23 33 30 34 33 18 40 34 46 20 32 4 53 9 0 0 33 33 19 2 5 20 8 252 -22 33 39 17 33 27 22 34 55 7 32 13 29 10 0 0 33 42 18 2 5 18 7 252 -21 33 48 16 33 36 20 35 4 12 .. .. .. 11 0 0 33 51 33 2 5 17 6 253 -21 33 57 32 33 45 35 35 13 34 .. .. .. 12 0 0 34 1 5 2 5 15 5 254 -20 34 7 4 33 55 7 35 23 12 .. .. .. 13 0 0 34 10 53 2 5 14 4 254 -19 34 16 53 34 4 54 35 33 6 .. .. .. 14 0 0 34 20 58 2 5 13 4 255 -18 34 26 58 34 14 58 35 43 17 .. .. .. 15 0 0 34 31 18 2 5 12 3 255 -18 34 37 18 34 25 18 35 53 44 .. .. .. 16 0 0 34 41 54 2 5 11 2 256 -17 34 47 55 34 35 53 36 4 26 .. .. .. 17 0 0 34 52 45 2 5 11 1 256 -16 34 58 46 34 46 44 36 15 24 .. .. .. 18 0 0 35 3 52 2 5 11 0 257 -16 35 9 53 34 57 50 .. .. .. .. .. .. Uncertainty in time = +/- 12 secs [Prediction of 2008 Nov 16.0] Data for the target star ------------------------ * name: HIP 72239 * constellation : Libra * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 14 46 24.1829 DE: -10 29 47.863 * position source: mpos:HIP2 pm:HIP2 plx:HIP2 * standard error: RA,DE ["]: ( .025, .017 ) * V mag [mag]: 8.7 * B mag [mag]: 9.7 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (6578) Zapesotskij approx. diameter [km]: 15 approx. diameter ["]: .011 distance from Earth [AU]: 1.87600 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: MPC (via Astdys) number of used observations: 532 number of rejected observations: 7 time covered by the observations: 1976 Sep 24 - 2008 Mar 14 1 sigma uncertainty ellipse (major, minor, PA): 0.079, 0.067, 106° remarks: * orbital elements for (6578) Zapesotskij : Mean anomaly = 224.44549136 deg Arg. of pericenter = 240.84688111 deg Long. of node = 141.39011960 deg Inclination = 3.58466097 deg Eccentricity = 0.18786429 Semimajor axis = 2.42088196 AU Perihelion dist = 1.96608468 AU Mag: H = 14.22, G = 0.15 Epoch of elements : MJD 54988.09300000 TDT (2009 Jun 06.093) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jun 6 6578 Zapesotskij 2h 13.3m UT 8.7 14 46 24.183-10 29 47.86HIP 72239 9.7 18.2 15 1.6 1.876 -1.612 4.26 -66.3536 -10.497 146.34 22.65 2.2215 0.12570 0.70496 -5.07644 0.90950 0.00276 -0.00131 2000 222.3278462009 529.00000240.846881141.390120 3.5846610.18786429 2.4208820 1.966084713.9 5.00.15 RATE 2.6166380 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.083 0.069 105 7.28 0.069 0 54786.5020090606__72239 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 16, 16:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org