IOTA/IOTA-ES occultation update for (159) Aemilia / UCAC2 30544460 event on 2009 Jun 05, 02:19 UT Visible from Summary ------- On 2009 Jun 05 UT, the 125 km diameter asteroid (159) Aemilia will occult a 11.1 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.4 mag to 13.3 mag (the magnitude of the asteroid) for at most 24.4 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: UCAC. The event at a glimpse ---------------------- * Rank: 86 * date and approx. time of event: 2009 Jun 05, 01:58 - 2009 Jun 05, 02:33 UT * magnitude of target star: 11.1 * magnitude drop [mag]: 2.4 * estimated maximum duration [s]: 24.4 * Moon: 93 % sunlit, 20° distance * Sun: 134° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 126 * 1 sigma uncertainty interval [path widths]: +/- 0.59 * 1 sigma uncertainty interval [seconds]: +/- 20.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .060 +/- .042) * 1 sigma uncertainty ellipse (major, minor, PA): ( .060", .042", 92° ) * approx speed of asteroid's shadow [km/s]: 5.1280 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC2 30544460 by 159 Aemilia on 2009 Jun 5 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 -128 0 0 - 0 23 35 2 33 26 44 95 -1 0 10 41 - 0 57 47 0 51 9 - 1 38 6 -127 0 0 - 0 20 50 2 33 12 45 95 -2 0 13 26 - 0 55 2 0 53 55 - 1 35 21 -126 0 0 - 0 17 57 2 32 57 46 95 -3 0 16 18 - 0 52 10 0 56 48 - 1 32 29 -125 0 0 - 0 14 57 2 32 42 47 95 -3 0 19 19 - 0 49 10 0 59 48 - 1 29 30 -124 0 0 - 0 11 50 2 32 27 48 95 -4 0 22 26 - 0 46 3 1 2 56 - 1 26 23 -123 0 0 - 0 8 35 2 32 12 49 95 -5 0 25 41 - 0 42 48 1 6 11 - 1 23 8 -122 0 0 - 0 5 13 2 31 56 49 95 -6 0 29 4 - 0 39 26 1 9 34 - 1 19 47 -121 0 0 - 0 1 43 2 31 41 50 96 -7 0 32 33 - 0 35 57 1 13 3 - 1 16 18 -120 0 0 0 1 53 2 31 25 51 96 -8 0 36 10 - 0 32 21 1 16 40 - 1 12 42 -119 0 0 0 5 36 2 31 9 52 96 -8 0 39 53 - 0 28 38 1 20 24 - 1 8 59 -118 0 0 0 9 27 2 30 52 53 96 -9 0 43 44 - 0 24 48 1 24 16 - 1 5 9 -117 0 0 0 13 24 2 30 36 54 96 -10 0 47 42 - 0 20 50 1 28 14 - 1 1 12 -116 0 0 0 17 29 2 30 19 55 97 -11 0 51 47 - 0 16 46 1 32 18 - 0 57 8 -115 0 0 0 21 40 2 30 2 56 97 -12 0 55 58 - 0 12 35 1 36 30 - 0 52 58 -114 0 0 0 25 58 2 29 45 57 97 -13 1 0 16 - 0 8 18 1 40 48 - 0 48 40 -113 0 0 0 30 22 2 29 28 58 98 -13 1 4 41 - 0 3 54 1 45 14 - 0 44 17 -112 0 0 0 34 53 2 29 11 59 98 -14 1 9 12 0 0 37 1 49 45 - 0 39 46 -111 0 0 0 39 31 2 28 53 60 98 -15 1 13 50 0 5 14 1 54 23 - 0 35 9 -110 0 0 0 44 15 2 28 36 60 99 -16 1 18 34 0 9 58 1 59 8 - 0 30 26 -109 0 0 0 49 5 2 28 18 61 99 -17 1 23 24 0 14 48 2 3 59 - 0 25 37 -108 0 0 0 54 1 2 28 0 62 99 -17 1 28 21 0 19 44 2 8 56 - 0 20 41 -107 0 0 0 59 4 2 27 42 63 100 -18 1 33 24 0 24 46 2 13 59 - 0 15 39 -106 0 0 1 4 12 2 27 24 64 100 -19 1 38 33 0 29 54 2 19 8 - 0 10 31 -105 0 0 1 9 27 2 27 6 65 101 -20 1 43 48 0 35 9 2 24 24 - 0 5 17 -104 0 0 1 14 48 2 26 47 66 102 -21 1 49 9 0 40 29 2 29 45 0 0 3 -103 0 0 1 20 14 2 26 28 67 102 -22 1 54 35 0 45 55 2 35 12 0 5 29 -102 0 0 1 25 46 2 26 10 68 103 -22 2 0 8 0 51 27 2 40 45 0 11 0 -101 0 0 1 31 24 2 25 51 68 104 -23 2 5 46 0 57 4 2 46 23 0 16 37 -100 0 0 1 37 7 2 25 32 69 105 -24 2 11 29 1 2 47 2 52 7 0 22 20 - 99 0 0 1 42 56 2 25 13 70 105 -25 2 17 19 1 8 36 2 57 56 0 28 8 - 98 0 0 1 48 50 2 24 54 71 106 -25 2 23 13 1 14 29 3 3 51 0 34 1 - 97 0 0 1 54 49 2 24 35 72 108 -26 2 29 13 1 20 28 3 9 51 0 40 0 - 96 0 0 2 0 54 2 24 15 73 109 -27 2 35 18 1 26 33 3 15 57 0 46 4 - 95 0 0 2 7 3 2 23 56 74 110 -28 2 41 28 1 32 42 3 22 7 0 52 13 - 94 0 0 2 13 18 2 23 37 74 112 -29 2 47 43 1 38 56 3 28 22 0 58 27 - 93 0 0 2 19 38 2 23 17 75 113 -29 2 54 2 1 45 16 3 34 43 1 4 46 - 92 0 0 2 26 2 2 22 58 76 115 -30 3 0 27 1 51 40 3 41 8 1 11 9 - 91 0 0 2 32 31 2 22 38 77 117 -31 3 6 57 1 58 8 3 47 38 1 17 38 - 90 0 0 2 39 5 2 22 18 78 120 -32 3 13 31 2 4 42 3 54 12 1 24 11 - 89 0 0 2 45 43 2 21 58 78 122 -32 3 20 9 2 11 20 4 0 51 1 30 48 - 88 0 0 2 52 26 2 21 39 79 125 -33 3 26 52 2 18 2 4 7 34 1 37 30 - 87 0 0 2 59 13 2 21 19 80 129 -34 3 33 39 2 24 49 4 14 22 1 44 17 - 86 0 0 3 6 4 2 20 59 80 133 -35 3 40 31 2 31 40 4 21 14 1 51 7 - 85 0 0 3 12 59 2 20 39 81 137 -35 3 47 27 2 38 35 4 28 10 1 58 2 - 84 0 0 3 19 59 2 20 19 81 142 -36 3 54 26 2 45 34 4 35 10 2 5 1 - 83 0 0 3 27 2 2 19 59 82 148 -37 4 1 30 2 52 37 4 42 14 2 12 3 - 82 0 0 3 34 9 2 19 39 82 154 -37 4 8 37 2 59 44 4 49 22 2 19 10 - 81 0 0 3 41 20 2 19 19 82 160 -38 4 15 48 3 6 54 4 56 33 2 26 20 - 80 0 0 3 48 34 2 18 59 82 167 -39 4 23 3 3 14 8 5 3 48 2 33 34 - 79 0 0 3 55 52 2 18 39 82 174 -40 4 30 21 3 21 26 5 11 7 2 40 51 - 78 0 0 4 3 14 2 18 19 82 181 -40 4 37 43 3 28 47 5 18 29 2 48 12 - 77 0 0 4 10 38 2 17 59 82 188 -41 4 45 8 3 36 11 5 25 54 2 55 36 - 76 0 0 4 18 6 2 17 39 82 194 -42 4 52 36 3 43 39 5 33 22 3 3 3 - 75 0 0 4 25 37 2 17 19 82 200 -42 5 0 7 3 51 9 5 40 54 3 10 33 - 74 0 0 4 33 11 2 16 59 81 205 -43 5 7 41 3 58 43 5 48 28 3 18 6 - 73 0 0 4 40 47 2 16 39 80 210 -44 5 15 18 4 6 19 5 56 5 3 25 42 - 72 0 0 4 48 27 2 16 19 80 214 -44 5 22 58 4 13 58 6 3 45 3 33 21 - 71 0 0 4 56 9 2 15 59 79 218 -45 5 30 40 4 21 40 6 11 28 3 41 3 - 70 0 0 5 3 53 2 15 39 79 221 -46 5 38 25 4 29 25 6 19 13 3 48 47 - 69 0 0 5 11 40 2 15 20 78 224 -46 5 46 12 4 37 11 6 27 0 3 56 33 - 68 0 0 5 19 30 2 15 0 77 227 -47 5 54 1 4 45 0 6 34 50 4 4 22 - 67 0 0 5 27 21 2 14 40 76 229 -47 6 1 53 4 52 52 6 42 42 4 12 13 - 66 0 0 5 35 15 2 14 21 76 231 -48 6 9 47 5 0 45 6 50 36 4 20 6 - 65 0 0 5 43 10 2 14 1 75 233 -48 6 17 42 5 8 40 6 58 32 4 28 1 - 64 0 0 5 51 7 2 13 42 74 234 -49 6 25 40 5 16 37 7 6 30 4 35 58 - 63 0 0 5 59 6 2 13 22 73 236 -50 6 33 39 5 24 36 7 14 29 4 43 57 - 62 0 0 6 7 7 2 13 3 72 237 -50 6 41 40 5 32 37 7 22 30 4 51 57 - 61 0 0 6 15 9 2 12 44 71 239 -51 6 49 42 5 40 39 7 30 33 4 59 59 - 60 0 0 6 23 13 2 12 25 71 240 -51 6 57 46 5 48 42 7 38 37 5 8 2 - 59 0 0 6 31 17 2 12 6 70 241 -52 7 5 51 5 56 47 7 46 42 5 16 7 - 58 0 0 6 39 23 2 11 47 69 242 -52 7 13 57 6 4 52 7 54 48 5 24 12 - 57 0 0 6 47 30 2 11 28 68 243 -53 7 22 4 6 12 59 8 2 55 5 32 19 - 56 0 0 6 55 38 2 11 9 67 243 -53 7 30 12 6 21 7 8 11 3 5 40 26 - 55 0 0 7 3 47 2 10 50 66 244 -53 7 38 21 6 29 15 8 19 12 5 48 35 - 54 0 0 7 11 56 2 10 32 65 245 -54 7 46 30 6 37 25 8 27 21 5 56 44 - 53 0 0 7 20 6 2 10 14 64 246 -54 7 54 40 6 45 34 8 35 31 6 4 53 - 52 0 0 7 28 16 2 9 55 64 246 -55 8 2 50 6 53 44 8 43 42 6 13 3 - 51 0 0 7 36 26 2 9 37 63 247 -55 8 11 1 7 1 55 8 51 53 6 21 14 - 50 0 0 7 44 37 2 9 19 62 247 -55 8 19 11 7 10 5 9 0 3 6 29 24 - 49 0 0 7 52 48 2 9 2 61 248 -56 8 27 22 7 18 16 9 8 14 6 37 35 - 48 0 0 8 0 58 2 8 44 60 248 -56 8 35 33 7 26 27 9 16 25 6 45 45 - 47 0 0 8 9 9 2 8 26 59 249 -56 8 43 43 7 34 37 9 24 35 6 53 56 - 46 0 0 8 17 19 2 8 9 58 249 -56 8 51 53 7 42 47 9 32 46 7 2 6 - 45 0 0 8 25 28 2 7 52 57 250 -57 9 0 3 7 50 57 9 40 55 7 10 15 - 44 0 0 8 33 38 2 7 35 56 250 -57 9 8 12 7 59 6 9 49 4 7 18 24 - 43 0 0 8 41 46 2 7 18 55 251 -57 9 16 21 8 7 14 9 57 13 7 26 33 - 42 0 0 8 49 53 2 7 1 55 251 -57 9 24 28 8 15 22 10 5 20 7 34 40 - 41 0 0 8 58 0 2 6 45 54 251 -57 9 32 35 8 23 28 10 13 27 7 42 47 - 40 0 0 9 6 6 2 6 29 53 252 -57 9 40 40 8 31 34 10 21 32 7 50 53 - 39 0 0 9 14 10 2 6 13 52 252 -58 9 48 44 8 39 38 10 29 36 7 58 57 - 38 0 0 9 22 13 2 5 57 51 252 -58 9 56 47 8 47 41 10 37 39 8 7 0 - 37 0 0 9 30 15 2 5 41 50 253 -58 10 4 49 8 55 43 10 45 41 8 15 2 - 36 0 0 9 38 15 2 5 25 49 253 -58 10 12 49 9 3 43 10 53 41 8 23 2 - 35 0 0 9 46 13 2 5 10 48 253 -58 10 20 47 9 11 42 11 1 39 8 31 1 - 34 0 0 9 54 9 2 4 55 47 254 -58 10 28 43 9 19 38 11 9 35 8 38 58 - 33 0 0 10 2 4 2 4 40 46 254 -57 10 36 38 9 27 33 11 17 29 8 46 52 - 32 0 0 10 9 56 2 4 26 45 254 -57 10 44 30 9 35 25 11 25 21 8 54 45 - 31 0 0 10 17 47 2 4 11 44 255 -57 10 52 20 9 43 16 11 33 11 9 2 36 - 30 0 0 10 25 34 2 3 57 43 255 -57 11 0 8 9 51 4 11 40 59 9 10 24 - 29 0 0 10 33 20 2 3 43 43 255 -57 11 7 53 9 58 49 11 48 44 9 18 10 - 28 0 0 10 41 3 2 3 29 42 255 -57 11 15 36 10 6 32 11 56 26 9 25 53 - 27 0 0 10 48 43 2 3 16 41 256 -56 11 23 16 10 14 13 12 4 6 9 33 33 - 26 0 0 10 56 20 2 3 2 40 256 -56 11 30 53 10 21 50 12 11 43 9 41 11 - 25 0 0 11 3 55 2 2 50 39 256 -56 11 38 27 10 29 25 12 19 17 9 48 46 - 24 0 0 11 11 26 2 2 37 38 256 -56 11 45 58 10 36 56 12 26 48 9 56 18 - 23 0 0 11 18 54 2 2 24 37 257 -55 11 53 26 10 44 24 12 34 15 10 3 46 - 22 0 0 11 26 19 2 2 12 36 257 -55 12 0 51 10 51 49 12 41 39 10 11 11 - 21 0 0 11 33 40 2 2 0 35 257 -55 12 8 12 10 59 11 12 49 0 10 18 33 - 20 0 0 11 40 57 2 1 48 34 258 -54 12 15 29 11 6 29 12 56 17 10 25 51 - 19 0 0 11 48 11 2 1 37 33 258 -54 12 22 43 11 13 43 13 3 31 10 33 6 - 18 0 0 11 55 21 2 1 26 32 258 -53 12 29 52 11 20 53 13 10 40 10 40 16 - 17 0 0 12 2 28 2 1 15 31 258 -53 12 36 58 11 28 0 13 17 46 10 47 23 - 16 0 0 12 9 30 2 1 4 30 258 -53 12 44 0 11 35 2 13 24 47 10 54 26 - 15 0 0 12 16 27 2 0 54 29 259 -52 12 50 58 11 42 0 13 31 44 11 1 24 - 14 0 0 12 23 21 2 0 44 29 259 -52 12 57 51 11 48 54 13 38 37 11 8 18 - 13 0 0 12 30 10 2 0 34 28 259 -51 13 4 39 11 55 43 13 45 25 11 15 8 - 12 0 0 12 36 54 2 0 25 27 259 -51 13 11 24 12 2 28 13 52 9 11 21 53 - 11 0 0 12 43 34 2 0 16 26 260 -50 13 18 3 12 9 8 13 58 48 11 28 34 - 10 0 0 12 50 9 2 0 7 25 260 -49 13 24 38 12 15 43 14 5 23 11 35 9 - 9 0 0 12 56 39 1 59 59 24 260 -49 13 31 7 12 22 14 14 11 52 11 41 40 - 8 0 0 13 3 4 1 59 50 23 260 -48 13 37 32 12 28 39 14 18 16 11 48 6 - 7 0 0 13 9 24 1 59 42 22 261 -48 13 43 51 12 34 59 14 24 35 11 54 26 - 6 0 0 13 15 38 1 59 35 21 261 -47 13 50 5 12 41 14 14 30 49 12 0 41 - 5 0 0 13 21 47 1 59 28 20 261 -46 13 56 14 12 47 23 14 36 57 12 6 51 - 4 0 0 13 27 51 1 59 21 19 261 -46 14 2 17 12 53 27 14 43 0 12 12 56 - 3 0 0 13 33 49 1 59 14 18 262 -45 14 8 15 12 59 25 14 48 57 12 18 54 - 2 0 0 13 39 41 1 59 8 17 262 -45 14 14 6 13 5 18 14 54 48 12 24 47 - 1 0 0 13 45 27 1 59 2 16 262 -44 14 19 52 13 11 5 15 0 33 12 30 34 0 0 0 13 51 7 1 58 56 15 262 -43 14 25 32 13 16 45 15 6 13 12 36 15 1 0 0 13 56 41 1 58 51 14 263 -43 14 31 6 13 22 20 15 11 46 12 41 50 2 0 0 14 2 9 1 58 46 13 263 -42 14 36 33 13 27 48 15 17 13 12 47 19 3 0 0 14 7 31 1 58 41 12 263 -41 14 41 55 13 33 10 15 22 34 12 52 41 4 0 0 14 12 46 1 58 37 11 263 -40 14 47 9 13 38 25 15 27 48 12 57 57 5 0 0 14 17 55 1 58 33 11 264 -40 14 52 18 13 43 34 15 32 56 13 3 7 6 0 0 14 22 56 1 58 29 10 264 -39 14 57 19 13 48 37 15 37 57 13 8 9 7 0 0 14 27 52 1 58 26 9 264 -38 15 2 14 13 53 32 15 42 51 13 13 5 8 0 0 14 32 40 1 58 23 8 264 -38 15 7 2 13 58 21 15 47 39 13 17 54 9 0 0 14 37 21 1 58 20 7 265 -37 15 11 43 14 3 3 15 52 19 13 22 37 10 0 0 14 41 55 1 58 18 6 265 -36 15 16 17 14 7 37 15 56 53 13 27 12 11 0 0 14 46 23 1 58 16 5 265 -35 15 20 43 14 12 5 16 1 19 13 31 39 12 0 0 14 50 42 1 58 14 4 265 -35 15 25 3 14 16 25 16 5 38 13 36 0 13 0 0 14 54 55 1 58 13 3 266 -34 15 29 15 14 20 37 16 9 49 13 40 13 14 0 0 14 59 0 1 58 12 2 266 -33 15 33 19 14 24 43 16 13 53 13 44 19 15 0 0 15 2 57 1 58 12 1 266 -32 15 37 16 14 28 40 16 17 50 13 48 17 Uncertainty in time = +/- 20 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: UCAC2 30544460 * constellation : Virgo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 13 59 44.7135 DE: -03 31 41.554 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .057, .040 ) * V mag [mag]: 11.1 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (159) Aemilia approx. diameter [km]: 125 approx. diameter ["]: .072 distance from Earth [AU]: 2.40800 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 915 number of rejected observations: 117 time covered by the observations: 1904 Jan 11 - 2008 Mar 12 1 sigma uncertainty ellipse (major, minor, PA): 0.019, 0.012, 108° remarks: * orbital elements for (159) Aemilia : Mean anomaly = 100.76399568 deg Arg. of pericenter = 335.09334454 deg Long. of node = 134.32118041 deg Inclination = 6.12842307 deg Eccentricity = 0.11065514 Semimajor axis = 3.09940442 AU Perihelion dist = 2.75643939 AU Mag: H = 8.20, G = 0.15 Epoch of elements : MJD 54987.09700000 TDT (2009 Jun 05.097) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jun 5 159 Aemilia 2h 18.8m UT 11.1 13 59 44.713- 3 31 41.55UCAC2 30544460 0.0 13.3 125 24.4 2.408 -0.699 -1.39 -78.4019 -3.528 144.93 22.55 2.3125 -0.01792 0.12956 -2.86937 -0.37982 0.00358 -0.00192 2000 99.4820742009 529.00000335.093345134.321180 6.1284230.11065514 3.0994044 2.7564394 8.1 5.00.15 RATE 1.8062870 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.060 0.042 92 1.59 0.042 0 54545.5020090605_544460 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 08:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org