IOTA/IOTA-ES occultation update for (569) Misa / 2UCAC 21832560 event on 2008 May 15, 16:21 UT Visible from Taiwan, China Summary ------- On 2008 May 15 UT, the 73 km diameter asteroid (569) Misa will occult a 12.2 mag star in the constellation Sagittarius for observers along a path across Taiwan, China. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.9 mag to 15.0 mag (the magnitude of the asteroid) for at most 7.5 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill Owen, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 75 * date and approx. time of event: 2008 May 15, 16:15 - 2008 May 15, 16:29 UT * magnitude of target star: 12.2 * magnitude drop [mag]: 2.9 * estimated maximum duration [s]: 7.5 * Moon: 83 % sunlit, 81° distance * Sun: 148° distance * rough path description: Taiwan, China The occultation path -------------------- * approximate projected width [km]: 102 * 1 sigma uncertainty interval [path widths]: +/- 0.75 * 1 sigma uncertainty interval [seconds]: +/- 5.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .038 +/- .034) * 1 sigma uncertainty ellipse (major, minor, PA): ( .038", .034", 90° ) * approx speed of asteroid's shadow [km/s]: 9.7671 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of 2UCAC 21832560 by 569 Misa on 2008 May 15 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 79 0 0 40 8 24 16 29 40 0 123 -24 .. .. .. 39 35 10 .. .. .. .. .. .. 80 0 0 39 38 24 16 29 40 1 124 -24 40 11 55 39 5 16 41 2 56 .. .. .. 81 0 0 39 8 31 16 29 39 2 124 -25 39 41 55 38 35 29 40 32 46 .. .. .. 82 0 0 38 38 45 16 29 39 3 125 -26 39 12 3 38 5 50 40 2 43 .. .. .. 83 0 0 38 9 9 16 29 38 4 126 -27 38 42 19 37 36 20 39 32 49 36 47 46 84 0 0 37 39 41 16 29 37 5 126 -28 38 12 45 37 6 59 39 3 3 36 18 35 85 0 0 37 10 25 16 29 35 6 127 -29 37 43 21 36 37 50 38 33 29 35 49 36 86 0 0 36 41 20 16 29 34 7 127 -29 37 14 9 36 8 52 38 4 5 35 20 48 87 0 0 36 12 28 16 29 32 8 128 -30 36 45 10 35 40 7 37 34 55 34 52 13 88 0 0 35 43 49 16 29 30 8 129 -31 36 16 24 35 11 35 37 5 57 34 23 52 89 0 0 35 15 25 16 29 28 9 129 -32 35 47 52 34 43 18 36 37 14 33 55 45 90 0 0 34 47 15 16 29 25 10 130 -32 35 19 35 34 15 16 36 8 45 33 27 53 91 0 0 34 19 22 16 29 22 11 130 -33 34 51 35 33 47 30 35 40 33 33 0 18 92 0 0 33 51 46 16 29 19 12 131 -34 34 23 51 33 20 1 35 12 38 32 33 0 93 0 0 33 24 28 16 29 16 13 132 -35 33 56 25 32 52 50 34 45 0 32 5 59 94 0 0 32 57 28 16 29 13 14 132 -35 33 29 18 32 25 58 34 17 41 31 39 17 95 0 0 32 30 47 16 29 9 15 133 -36 33 2 30 31 59 24 33 50 41 31 12 54 96 0 0 32 4 26 16 29 5 16 133 -37 32 36 1 31 33 11 33 24 1 30 46 51 97 0 0 31 38 26 16 29 1 17 134 -37 32 9 53 31 7 18 32 57 41 30 21 9 98 0 0 31 12 47 16 28 57 18 135 -38 31 44 7 30 41 46 32 31 43 29 55 48 99 0 0 30 47 30 16 28 52 18 135 -39 31 18 42 30 16 36 32 6 7 29 30 48 100 0 0 30 22 35 16 28 47 19 136 -39 30 53 40 29 51 48 31 40 54 29 6 10 101 0 0 29 58 3 16 28 42 20 136 -40 30 29 1 29 27 23 31 16 3 28 41 56 102 0 0 29 33 55 16 28 37 21 137 -41 30 4 46 29 3 22 30 51 37 28 18 5 103 0 0 29 10 11 16 28 31 22 138 -41 29 40 55 28 39 45 30 27 34 27 54 38 104 0 0 28 46 51 16 28 26 23 138 -42 29 17 28 28 16 32 30 3 57 27 31 35 105 0 0 28 23 57 16 28 20 24 139 -42 28 54 27 27 53 44 29 40 45 27 8 57 106 0 0 28 1 28 16 28 14 25 140 -43 28 31 51 27 31 22 29 17 58 26 46 44 107 0 0 27 39 25 16 28 7 25 140 -43 28 9 41 27 9 26 28 55 38 26 24 57 108 0 0 27 17 48 16 28 1 26 141 -44 27 47 57 26 47 55 28 33 44 26 3 36 109 0 0 26 56 38 16 27 54 27 142 -44 27 26 41 26 26 51 28 12 17 25 42 41 110 0 0 26 35 55 16 27 47 28 142 -44 27 5 51 26 6 15 27 51 18 25 22 14 111 0 0 26 15 39 16 27 40 29 143 -45 26 45 30 25 46 5 27 30 47 25 2 13 112 0 0 25 55 51 16 27 33 29 144 -45 26 25 36 25 26 23 27 10 43 24 42 40 113 0 0 25 36 32 16 27 26 30 144 -45 26 6 10 25 7 9 26 51 8 24 23 34 114 0 0 25 17 40 16 27 18 31 145 -46 25 47 12 24 48 23 26 32 1 24 4 57 115 0 0 24 59 17 16 27 11 32 146 -46 25 28 44 24 30 6 26 13 24 23 46 47 116 0 0 24 41 23 16 27 3 32 147 -46 25 10 44 24 12 17 25 55 16 23 29 7 117 0 0 24 23 58 16 26 55 33 147 -46 24 53 14 23 54 58 25 37 37 23 11 55 118 0 0 24 7 2 16 26 47 34 148 -47 24 36 13 23 38 7 25 20 28 22 55 11 119 0 0 23 50 36 16 26 38 35 149 -47 24 19 41 23 21 46 25 3 48 22 38 58 120 0 0 23 34 40 16 26 30 35 150 -47 24 3 40 23 5 54 24 47 39 22 23 13 121 0 0 23 19 13 16 26 22 36 151 -47 23 48 8 22 50 32 24 32 0 22 7 58 122 0 0 23 4 17 16 26 13 37 151 -47 23 33 7 22 35 40 24 16 52 21 53 13 123 0 0 22 49 50 16 26 4 37 152 -47 23 18 36 22 21 19 24 2 14 21 38 57 124 0 0 22 35 54 16 25 55 38 153 -47 23 4 36 22 7 27 23 48 7 21 25 12 125 0 0 22 22 29 16 25 46 38 154 -47 22 51 6 21 54 6 23 34 30 21 11 56 126 0 0 22 9 34 16 25 37 39 155 -47 22 38 7 21 41 15 23 21 25 20 59 11 127 0 0 21 57 10 16 25 28 40 156 -47 22 25 39 21 28 54 23 8 51 20 46 56 128 0 0 21 45 17 16 25 19 40 157 -47 22 13 42 21 17 5 22 56 48 20 35 12 129 0 0 21 33 54 16 25 9 41 158 -46 22 2 17 21 5 46 22 45 17 20 23 58 130 0 0 21 23 3 16 25 0 41 159 -46 21 51 22 20 54 58 22 34 17 20 13 15 131 0 0 21 12 43 16 24 50 42 160 -46 21 40 59 20 44 41 22 23 49 20 3 3 132 0 0 21 2 54 16 24 41 42 161 -46 21 31 7 20 34 55 22 13 52 19 53 21 133 0 0 20 53 37 16 24 31 42 162 -46 21 21 46 20 25 41 22 4 27 19 44 11 134 0 0 20 44 50 16 24 21 43 163 -45 21 12 57 20 16 57 21 55 34 19 35 31 135 0 0 20 36 36 16 24 11 43 164 -45 21 4 40 20 8 45 21 47 12 19 27 23 136 0 0 20 28 52 16 24 1 44 166 -45 20 56 54 20 1 4 21 39 23 19 19 45 137 0 0 20 21 40 16 23 51 44 167 -44 20 49 40 19 53 54 21 32 5 19 12 39 138 0 0 20 15 0 16 23 41 44 168 -44 20 42 58 19 47 16 21 25 19 19 6 3 139 0 0 20 8 51 16 23 31 44 169 -43 20 36 47 19 41 9 21 19 6 18 59 59 140 0 0 20 3 15 16 23 21 45 170 -43 20 31 8 19 35 34 21 13 24 18 54 27 141 0 0 19 58 9 16 23 11 45 171 -43 20 26 1 19 30 30 21 8 15 18 49 25 142 0 0 19 53 36 16 23 1 45 173 -42 20 21 26 19 25 58 21 3 38 18 44 55 143 0 0 19 49 34 16 22 51 45 174 -42 20 17 23 19 21 57 20 59 33 18 40 56 144 0 0 19 46 4 16 22 41 45 175 -41 20 13 52 19 18 28 20 56 0 18 37 29 145 0 0 19 43 6 16 22 30 46 176 -40 20 10 53 19 15 31 20 52 59 18 34 33 146 0 0 19 40 39 16 22 20 46 177 -40 20 8 26 19 13 5 20 50 31 18 32 8 147 0 0 19 38 44 16 22 10 46 179 -39 20 6 31 19 11 11 20 48 35 18 30 15 148 0 0 19 37 22 16 21 59 46 180 -39 20 5 7 19 9 49 20 47 11 18 28 53 149 0 0 19 36 31 16 21 49 46 181 -38 20 4 16 19 8 58 20 46 20 18 28 3 150 0 0 19 36 12 16 21 39 46 182 -37 20 3 57 19 8 39 20 46 0 18 27 44 151 0 0 19 36 24 16 21 29 46 184 -37 20 4 10 19 8 52 20 46 13 18 27 57 152 0 0 19 37 9 16 21 18 46 185 -36 20 4 55 19 9 36 20 46 58 18 28 41 153 0 0 19 38 25 16 21 8 46 186 -36 20 6 12 19 10 52 20 48 16 18 29 56 154 0 0 19 40 14 16 20 58 45 187 -35 20 8 1 19 12 40 20 50 6 18 31 43 155 0 0 19 42 34 16 20 48 45 189 -34 20 10 21 19 15 0 20 52 28 18 34 1 156 0 0 19 45 26 16 20 38 45 190 -33 20 13 14 19 17 51 20 55 22 18 36 51 157 0 0 19 48 50 16 20 27 45 191 -33 20 16 39 19 21 13 20 58 49 18 40 12 158 0 0 19 52 46 16 20 17 45 192 -32 20 20 36 19 25 8 21 2 48 18 44 5 159 0 0 19 57 13 16 20 7 44 193 -31 20 25 5 19 29 34 21 7 19 18 48 29 160 0 0 20 2 12 16 19 57 44 195 -30 20 30 6 19 34 32 21 12 22 18 53 25 161 0 0 20 7 43 16 19 47 44 196 -30 20 35 39 19 40 1 21 17 58 18 58 51 162 0 0 20 13 46 16 19 37 43 197 -29 20 41 43 19 46 2 21 24 5 19 4 49 163 0 0 20 20 20 16 19 27 43 198 -28 20 48 20 19 52 34 21 30 45 19 11 19 164 0 0 20 27 26 16 19 18 43 199 -27 20 55 28 19 59 38 21 37 57 19 18 19 165 0 0 20 35 4 16 19 8 42 200 -27 21 3 8 20 7 13 21 45 41 19 25 51 166 0 0 20 43 13 16 18 58 42 201 -26 21 11 20 20 15 20 21 53 57 19 33 54 167 0 0 20 51 54 16 18 49 41 202 -25 21 20 4 20 23 58 22 2 44 19 42 28 168 0 0 21 1 6 16 18 39 41 203 -24 21 29 19 20 33 7 22 12 4 19 51 34 169 0 0 21 10 50 16 18 30 40 204 -23 21 39 5 20 42 48 22 21 55 20 1 10 170 0 0 21 21 5 16 18 21 40 205 -22 21 49 24 20 53 0 22 32 19 20 11 17 171 0 0 21 31 51 16 18 11 39 206 -22 22 0 13 21 3 43 22 43 14 20 21 55 172 0 0 21 43 8 16 18 2 39 207 -21 22 11 34 21 14 57 22 54 40 20 33 4 173 0 0 21 54 57 16 17 53 38 208 -20 22 23 26 21 26 41 23 6 38 20 44 43 174 0 0 22 7 16 16 17 44 37 209 -19 22 35 50 21 38 57 23 19 8 20 56 53 175 0 0 22 20 7 16 17 35 37 210 -18 22 48 44 21 51 43 23 32 8 21 9 34 176 0 0 22 33 28 16 17 27 36 211 -17 23 2 10 22 5 0 23 45 40 21 22 45 177 0 0 22 47 20 16 17 18 35 211 -16 23 16 6 22 18 48 23 59 43 21 36 26 178 0 0 23 1 42 16 17 10 35 212 -15 23 30 33 22 33 6 24 14 17 21 50 38 179 0 0 23 16 35 16 17 2 34 213 -14 23 45 30 22 47 54 24 29 22 22 5 19 180 0 0 23 31 58 16 16 53 33 214 -14 24 0 58 23 3 12 24 44 57 22 20 31 -179 0 0 23 47 51 16 16 45 33 215 -13 24 16 56 23 19 0 25 1 3 22 36 12 -178 0 0 24 4 14 16 16 37 32 215 -12 24 33 24 23 35 18 25 17 39 22 52 22 -177 0 0 24 21 6 16 16 30 31 216 -11 24 50 22 23 52 6 25 34 45 23 9 2 -176 0 0 24 38 28 16 16 22 30 217 -10 25 7 49 24 9 22 25 52 21 23 26 11 -175 0 0 24 56 20 16 16 15 30 217 -9 25 25 46 24 27 8 26 10 27 23 43 49 -174 0 0 25 14 40 16 16 8 29 218 -8 25 44 13 24 45 23 26 29 2 24 1 56 -173 0 0 25 33 29 16 16 1 28 219 -7 26 3 8 25 4 7 26 48 6 24 20 31 -172 0 0 25 52 47 16 15 54 27 220 -6 26 22 32 25 23 19 27 7 39 24 39 35 -171 0 0 26 12 33 16 15 47 27 220 -5 26 42 24 25 42 59 27 27 41 24 59 6 -170 0 0 26 32 47 16 15 40 26 221 -4 27 2 44 26 3 6 27 48 11 25 19 5 -169 0 0 26 53 29 16 15 34 25 221 -3 27 23 32 26 23 42 28 9 9 25 39 31 -168 0 0 27 14 37 16 15 28 24 222 -3 27 44 47 26 44 44 28 30 35 26 0 25 -167 0 0 27 36 13 16 15 22 23 223 -2 28 6 30 27 6 14 28 52 27 26 21 44 -166 0 0 27 58 16 16 15 16 22 223 -1 28 28 39 27 28 9 29 14 47 26 43 31 Uncertainty in time = +/- 6 secs [Prediction of 2008 May 8.0] Data for the target star ------------------------ * name: 2UCAC 21832560 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 17 48 34.5846 DE: -24 41 19.138 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .032, .030 ) * V mag [mag]: 12.2 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (569) Misa approx. diameter [km]: 73 approx. diameter ["]: .045 distance from Earth [AU]: 2.23600 * orbital information: orbit source: Preston date of fit: 2008 May 07 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 925 number of rejected observations: 96 time covered by the observations: 1909 Aug 12 - 2008 May 01 1 sigma uncertainty ellipse (major, minor, PA): 0.021, 0.015, 90° remarks: * orbital elements for (569) Misa : Mean anomaly = 170.82838888 deg Arg. of pericenter = 141.99892781 deg Long. of node = 301.94089830 deg Inclination = 1.29615190 deg Eccentricity = 0.18185607 Semimajor axis = 2.65830246 AU Perihelion dist = 2.17487403 AU Mag: H = 10.18, G = 0.15 Epoch of elements : MJD 54601.68200000 TDT (2008 May 15.682) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 May 15 569 Misa 16h 21.9m UT 12.2 17 48 34.585-24 41 19.142UCAC 21832560 0.0 15.0 73 7.5 2.236 -1.592 0.32 147.9111 -24.688 -66.37 19.07 16.3645 0.01084 0.69667 -5.51224 0.08009 -0.00301 0.00017 2000 170.4458962008 514.00000141.998928301.940898 1.2961520.18185607 2.6583025 2.174874010.1 5.00.15 RATE 2.2740370 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.038 0.034 90 1.75 0.034 0 54594.5020080515_832560 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 May 08, 03:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org