IOTA/IOTA-ES occultation update for (1569) Evita / HIP 84227 event on 2009 Jun 11, 03:17 UT Visible from Summary ------- On 2009 Jun 11 UT, the 34 km diameter asteroid (1569) Evita will occult a 8.8 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.6 mag to 15.4 mag (the magnitude of the asteroid) for at most 2.6 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: 38 * date and approx. time of event: 2009 Jun 11, 03:12 - 2009 Jun 11, 03:23 UT * magnitude of target star: 8.8 * magnitude drop [mag]: 6.6 * estimated maximum duration [s]: 2.6 * Moon: 90 % sunlit, 39° distance * Sun: 173° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 50 * 1 sigma uncertainty interval [path widths]: +/- 1.75 * 1 sigma uncertainty interval [seconds]: +/- 5.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .054 +/- .036) * 1 sigma uncertainty ellipse (major, minor, PA): ( .055", .035", 103° ) * approx speed of asteroid's shadow [km/s]: 13.2481 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 84227 by 1569 Evita on 2009 Jun 11 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 -124 0 0 34 13 50 3 23 13 5 114 0 34 28 18 33 59 26 35 19 31 .. .. .. -123 0 0 33 57 26 3 23 12 6 114 -1 34 11 53 33 43 4 35 2 58 32 53 19 -122 0 0 33 41 23 3 23 10 7 115 -2 33 55 47 33 27 3 34 46 45 32 37 24 -121 0 0 33 25 40 3 23 9 8 115 -3 33 40 2 33 11 22 34 30 53 32 21 50 -120 0 0 33 10 18 3 23 8 8 116 -4 33 24 38 32 56 2 34 15 22 32 6 37 -119 0 0 32 55 17 3 23 6 9 117 -4 33 9 36 32 41 3 34 0 12 31 51 45 -118 0 0 32 40 38 3 23 4 10 117 -5 32 54 54 32 26 26 33 45 23 31 37 14 -117 0 0 32 26 20 3 23 2 11 118 -6 32 40 35 32 12 10 33 30 57 31 23 4 -116 0 0 32 12 25 3 23 0 12 118 -7 32 26 37 31 58 16 33 16 53 31 9 17 -115 0 0 31 58 51 3 22 58 13 119 -8 32 13 2 31 44 45 33 3 11 30 55 52 -114 0 0 31 45 41 3 22 55 14 119 -9 31 59 50 31 31 36 32 49 52 30 42 49 -113 0 0 31 32 53 3 22 53 14 120 -9 31 47 0 31 18 50 32 36 56 30 30 8 -112 0 0 31 20 28 3 22 50 15 121 -10 31 34 33 31 6 27 32 24 23 30 17 51 -111 0 0 31 8 26 3 22 47 16 121 -11 31 22 30 30 54 27 32 12 14 30 5 56 -110 0 0 30 56 48 3 22 44 17 122 -12 31 10 50 30 42 50 32 0 28 29 54 25 -109 0 0 30 45 34 3 22 41 18 122 -13 30 59 34 30 31 37 31 49 7 29 43 18 -108 0 0 30 34 43 3 22 38 18 123 -13 30 48 42 30 20 48 31 38 9 29 32 34 -107 0 0 30 24 17 3 22 34 19 124 -14 30 38 14 30 10 23 31 27 36 29 22 13 -106 0 0 30 14 14 3 22 30 20 124 -15 30 28 10 30 0 22 31 17 27 29 12 17 -105 0 0 30 4 36 3 22 27 21 125 -16 30 18 31 29 50 45 31 7 43 29 2 45 -104 0 0 29 55 23 3 22 23 22 125 -16 30 9 16 29 41 33 30 58 23 28 53 37 -103 0 0 29 46 34 3 22 19 22 126 -17 30 0 26 29 32 45 30 49 28 28 44 54 -102 0 0 29 38 10 3 22 15 23 127 -18 29 52 1 29 24 22 30 40 58 28 36 35 -101 0 0 29 30 10 3 22 10 24 127 -19 29 44 0 29 16 24 30 32 54 28 28 41 -100 0 0 29 22 36 3 22 6 25 128 -19 29 36 25 29 8 51 30 25 14 28 21 11 - 99 0 0 29 15 27 3 22 1 25 129 -20 29 29 14 29 1 43 30 18 0 28 14 6 - 98 0 0 29 8 43 3 21 57 26 129 -21 29 22 29 28 55 0 30 11 12 28 7 26 - 97 0 0 29 2 24 3 21 52 27 130 -21 29 16 9 28 48 42 30 4 49 28 1 12 - 96 0 0 28 56 30 3 21 47 28 131 -22 29 10 15 28 42 49 29 58 51 27 55 22 - 95 0 0 28 51 2 3 21 42 28 132 -23 29 4 46 28 37 22 29 53 19 27 49 57 - 94 0 0 28 45 59 3 21 37 29 132 -23 28 59 43 28 32 20 29 48 13 27 44 58 - 93 0 0 28 41 22 3 21 32 30 133 -24 28 55 5 28 27 43 29 43 32 27 40 24 - 92 0 0 28 37 10 3 21 26 30 134 -25 28 50 52 28 23 32 29 39 18 27 36 15 - 91 0 0 28 33 24 3 21 21 31 135 -25 28 47 5 28 19 46 29 35 29 27 32 31 - 90 0 0 28 30 4 3 21 15 32 135 -26 28 43 44 28 16 26 29 32 6 27 29 13 - 89 0 0 28 27 9 3 21 10 32 136 -27 28 40 49 28 13 32 29 29 9 27 26 20 - 88 0 0 28 24 39 3 21 4 33 137 -27 28 38 19 28 11 3 29 26 37 27 23 53 - 87 0 0 28 22 36 3 20 58 34 138 -28 28 36 15 28 9 0 29 24 32 27 21 51 - 86 0 0 28 20 58 3 20 52 34 139 -28 28 34 37 28 7 22 29 22 53 27 20 14 - 85 0 0 28 19 45 3 20 46 35 140 -29 28 33 24 28 6 10 29 21 39 27 19 3 - 84 0 0 28 18 59 3 20 40 35 141 -29 28 32 38 28 5 23 29 20 52 27 18 17 - 83 0 0 28 18 38 3 20 34 36 142 -30 28 32 16 28 5 3 29 20 30 27 17 56 - 82 0 0 28 18 42 3 20 28 36 143 -30 28 32 21 28 5 7 29 20 34 27 18 1 - 81 0 0 28 19 12 3 20 21 37 144 -31 28 32 51 28 5 37 29 21 4 27 18 31 - 80 0 0 28 20 8 3 20 15 37 145 -31 28 33 47 28 6 33 29 22 0 27 19 27 - 79 0 0 28 21 29 3 20 8 38 146 -32 28 35 8 28 7 54 29 23 22 27 20 47 - 78 0 0 28 23 16 3 20 2 38 147 -32 28 36 55 28 9 40 29 25 9 27 22 33 - 77 0 0 28 25 28 3 19 55 39 148 -32 28 39 7 28 11 52 29 27 22 27 24 44 - 76 0 0 28 28 5 3 19 48 39 149 -33 28 41 45 28 14 29 29 30 1 27 27 20 - 75 0 0 28 31 8 3 19 42 39 150 -33 28 44 48 28 17 32 29 33 5 27 30 22 - 74 0 0 28 34 36 3 19 35 40 151 -34 28 48 16 28 20 59 29 36 35 27 33 48 - 73 0 0 28 38 29 3 19 28 40 152 -34 28 52 10 28 24 52 29 40 30 27 37 39 - 72 0 0 28 42 47 3 19 21 41 153 -34 28 56 28 28 29 10 29 44 51 27 41 55 - 71 0 0 28 47 30 3 19 14 41 154 -34 29 1 12 28 33 52 29 49 37 27 46 36 - 70 0 0 28 52 38 3 19 7 41 155 -35 29 6 21 28 39 0 29 54 48 27 51 41 - 69 0 0 28 58 11 3 19 0 41 157 -35 29 11 54 28 44 32 30 0 24 27 57 11 - 68 0 0 29 4 9 3 18 53 42 158 -35 29 17 52 28 50 28 30 6 25 28 3 5 - 67 0 0 29 10 31 3 18 46 42 159 -35 29 24 15 28 56 50 30 12 50 28 9 24 - 66 0 0 29 17 17 3 18 39 42 160 -35 29 31 3 29 3 36 30 19 41 28 16 7 - 65 0 0 29 24 28 3 18 32 42 162 -36 29 38 15 29 10 46 30 26 56 28 23 14 - 64 0 0 29 32 3 3 18 25 42 163 -36 29 45 51 29 18 20 30 34 35 28 30 44 - 63 0 0 29 40 3 3 18 18 42 164 -36 29 53 51 29 26 18 30 42 39 28 38 39 - 62 0 0 29 48 26 3 18 11 43 165 -36 30 2 15 29 34 40 30 51 7 28 46 58 - 61 0 0 29 57 12 3 18 4 43 167 -36 30 11 3 29 43 26 30 59 59 28 55 40 - 60 0 0 30 6 23 3 17 56 43 168 -36 30 20 15 29 52 35 31 9 15 29 4 45 - 59 0 0 30 15 57 3 17 49 43 169 -36 30 29 50 30 2 8 31 18 55 29 14 14 - 58 0 0 30 25 54 3 17 42 43 170 -36 30 39 48 30 12 4 31 28 58 29 24 5 - 57 0 0 30 36 14 3 17 35 43 172 -36 30 50 10 30 22 23 31 39 24 29 34 20 - 56 0 0 30 46 57 3 17 28 43 173 -36 31 0 54 30 33 4 31 50 13 29 44 57 - 55 0 0 30 58 3 3 17 21 42 174 -36 31 12 1 30 44 9 32 1 26 29 55 57 - 54 0 0 31 9 31 3 17 13 42 175 -36 31 23 31 30 55 36 32 13 1 30 7 19 - 53 0 0 31 21 22 3 17 6 42 177 -36 31 35 23 31 7 25 32 24 58 30 19 3 - 52 0 0 31 33 35 3 16 59 42 178 -35 31 47 37 31 19 36 32 37 18 30 31 9 - 51 0 0 31 46 9 3 16 52 42 179 -35 32 0 13 31 32 8 32 50 0 30 43 36 - 50 0 0 31 59 5 3 16 45 42 181 -35 32 13 11 31 45 3 33 3 3 30 56 25 - 49 0 0 32 12 22 3 16 38 41 182 -35 32 26 30 31 58 18 33 16 28 31 9 35 - 48 0 0 32 26 0 3 16 31 41 183 -35 32 40 10 32 11 55 33 30 14 31 23 6 - 47 0 0 32 39 59 3 16 24 41 184 -34 32 54 10 32 25 52 33 44 21 31 36 57 - 46 0 0 32 54 19 3 16 17 41 185 -34 33 8 31 32 40 10 33 58 49 31 51 9 - 45 0 0 33 8 58 3 16 10 40 187 -34 33 23 13 32 54 47 34 13 37 32 5 40 - 44 0 0 33 23 58 3 16 4 40 188 -33 33 38 14 33 9 45 34 28 45 32 20 32 - 43 0 0 33 39 17 3 15 57 39 189 -33 33 53 35 33 25 2 34 44 13 32 35 43 - 42 0 0 33 54 55 3 15 50 39 190 -33 34 9 15 33 40 39 35 0 0 32 51 13 - 41 0 0 34 10 52 3 15 44 39 191 -32 34 25 14 33 56 34 35 16 6 33 7 1 - 40 0 0 34 27 8 3 15 37 38 192 -32 34 41 32 34 12 48 35 32 31 33 23 8 - 39 0 0 34 43 42 3 15 31 38 194 -32 34 58 8 34 29 19 35 49 14 33 39 33 - 38 0 0 35 0 33 3 15 24 37 195 -31 35 15 2 34 46 9 36 6 15 33 56 16 - 37 0 0 35 17 42 3 15 18 37 196 -31 35 32 13 35 3 16 36 23 33 34 13 17 - 36 0 0 35 35 8 3 15 12 36 197 -30 35 49 41 35 20 40 36 41 9 34 30 34 - 35 0 0 35 52 51 3 15 5 36 198 -30 36 7 26 35 38 21 36 59 1 34 48 7 - 34 0 0 36 10 50 3 14 59 35 199 -29 36 25 27 35 56 18 37 17 10 35 5 57 - 33 0 0 36 29 5 3 14 53 35 200 -29 36 43 43 36 14 30 37 35 35 35 24 3 - 32 0 0 36 47 35 3 14 47 34 201 -28 37 2 16 36 32 58 37 54 14 35 42 24 - 31 0 0 37 6 20 3 14 42 34 202 -28 37 21 3 36 51 41 38 13 9 36 0 59 - 30 0 0 37 25 19 3 14 36 33 203 -27 37 40 4 37 10 38 38 32 18 36 19 49 - 29 0 0 37 44 32 3 14 30 32 204 -27 37 59 19 37 29 49 38 51 42 36 38 53 - 28 0 0 38 3 59 3 14 25 32 205 -26 38 18 48 37 49 14 39 11 18 36 58 11 - 27 0 0 38 23 38 3 14 19 31 206 -25 38 38 30 38 8 51 39 31 8 37 17 41 - 26 0 0 38 43 31 3 14 14 31 207 -25 38 58 24 38 28 41 39 51 10 37 37 24 - 25 0 0 39 3 35 3 14 9 30 208 -24 39 18 31 38 48 43 40 11 24 37 57 19 - 24 0 0 39 23 50 3 14 4 29 209 -24 39 38 48 39 8 57 40 31 49 38 17 25 - 23 0 0 39 44 16 3 13 59 29 209 -23 39 59 17 39 29 21 40 52 25 38 37 42 - 22 0 0 40 4 53 3 13 54 28 210 -22 40 19 55 39 49 55 41 13 11 38 58 10 - 21 0 0 40 25 39 3 13 49 27 211 -22 40 40 44 40 10 40 41 34 7 39 18 47 - 20 0 0 40 46 35 3 13 45 27 212 -21 41 1 41 40 31 33 41 55 12 39 39 34 - 19 0 0 41 7 39 3 13 40 26 213 -20 41 22 47 40 52 36 42 16 26 40 0 30 - 18 0 0 41 28 51 3 13 36 25 214 -20 41 44 2 41 13 46 42 37 47 40 21 33 - 17 0 0 41 50 11 3 13 32 24 215 -19 42 5 23 41 35 3 42 59 16 40 42 44 - 16 0 0 42 11 37 3 13 27 24 215 -18 42 26 52 41 56 28 43 20 51 41 4 2 - 15 0 0 42 33 10 3 13 23 23 216 -18 42 48 26 42 17 59 43 42 33 41 25 27 - 14 0 0 42 54 48 3 13 20 22 217 -17 43 10 6 42 39 35 44 4 19 41 46 57 - 13 0 0 43 16 32 3 13 16 22 218 -16 43 31 51 43 1 17 44 26 11 42 8 33 - 12 0 0 43 38 19 3 13 12 21 219 -16 43 53 41 43 23 3 44 48 7 42 30 13 - 11 0 0 44 0 11 3 13 9 20 220 -15 44 15 34 43 44 53 45 10 6 42 51 57 - 10 0 0 44 22 5 3 13 6 19 220 -14 44 37 30 44 6 45 45 32 8 43 13 45 - 9 0 0 44 44 2 3 13 2 19 221 -13 44 59 29 44 28 41 45 54 12 43 35 35 - 8 0 0 45 6 1 3 12 59 18 222 -13 45 21 29 44 50 38 46 16 18 43 57 27 - 7 0 0 45 28 1 3 12 56 17 223 -12 45 43 31 45 12 37 46 38 25 44 19 21 - 6 0 0 45 50 2 3 12 54 16 223 -11 46 5 33 45 34 36 47 0 32 44 41 16 - 5 0 0 46 12 3 3 12 51 16 224 -11 46 27 35 45 56 36 47 22 39 45 3 11 - 4 0 0 46 34 3 3 12 48 15 225 -10 46 49 36 46 18 35 47 44 45 45 25 6 - 3 0 0 46 56 2 3 12 46 14 226 -9 47 11 36 46 40 32 48 6 49 45 46 59 - 2 0 0 47 17 59 3 12 44 13 227 -8 47 33 34 47 2 28 48 28 51 46 8 52 - 1 0 0 47 39 53 3 12 42 13 227 -8 47 55 29 47 24 22 48 50 50 46 30 42 0 0 0 48 1 44 3 12 40 12 228 -7 48 17 22 47 46 12 49 12 46 46 52 29 1 0 0 48 23 32 3 12 38 11 229 -6 48 39 10 48 7 59 49 34 37 47 14 13 2 0 0 48 45 15 3 12 36 11 230 -5 49 0 54 48 29 41 49 56 24 47 35 53 3 0 0 49 6 53 3 12 34 10 230 -5 49 22 33 48 51 19 50 18 5 47 57 28 4 0 0 49 28 26 3 12 33 9 231 -4 49 44 6 49 12 51 50 39 41 48 18 58 5 0 0 49 49 53 3 12 31 8 232 -3 50 5 33 49 34 17 51 1 10 48 40 23 6 0 0 50 11 13 3 12 30 8 233 -3 50 26 54 49 55 37 51 22 32 49 1 41 7 0 0 50 32 26 3 12 29 7 234 -2 50 48 7 50 16 49 51 43 46 49 22 53 8 0 0 50 53 31 3 12 28 6 234 -1 51 9 13 50 37 54 52 4 52 49 43 57 9 0 0 51 14 28 3 12 27 5 235 0 51 30 10 50 58 51 52 25 50 50 4 54 Uncertainty in time = +/- 6 secs [Prediction of 2008 Nov 16.0] Data for the target star ------------------------ * name: HIP 84227 * constellation : Ophiuchus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 17 12 58.5780 DE: -16 30 52.737 * position source: mpos:HIP2 pm:HIP2 plx:HIP2 * standard error: RA,DE ["]: ( .020, .012 ) * V mag [mag]: 8.8 * B mag [mag]: 9.1 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1569) Evita approx. diameter [km]: 34 approx. diameter ["]: .022 distance from Earth [AU]: 2.09700 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 889 number of rejected observations: 18 time covered by the observations: 1948 Aug 03 - 2008 Mar 14 1 sigma uncertainty ellipse (major, minor, PA): 0.051, 0.033, 105° remarks: * orbital elements for (1569) Evita : Mean anomaly = 282.82364123 deg Arg. of pericenter = 251.57872090 deg Long. of node = 99.68150437 deg Inclination = 12.26992054 deg Eccentricity = 0.13386773 Semimajor axis = 3.14604914 AU Perihelion dist = 2.72489469 AU Mag: H = 11.11, G = 0.15 Epoch of elements : MJD 54993.13700000 TDT (2009 Jun 11.137) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jun 11 1569 Evita 3h 17.8m UT 8.8 17 12 58.578-16 30 52.74HIP 84227 9.1 15.4 34 2.6 2.097 -2.148 -5.35 -50.8158 -16.512 130.45 23.09 3.2970 -0.12532 0.72366 -7.36798 -1.27573 0.00008 -0.00064 2000 282.2695642009 6 8.00000251.578721 99.681504 12.2699210.13386773 3.1460491 2.724894711.1 5.00.15 RATE 1.7662650 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.055 0.035 103 2.75 0.039 0 54786.5020090611__84227 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 16, 16:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org