IOTA/IOTA-ES occultation update for (93) Minerva / TYC 7353-02376-1 event on 2008 May 17, 18:46 UT Visible from Japan, China, Hong Kong, India, Arabia Summary ------- On 2008 May 17 UT, the 157 km diameter asteroid (93) Minerva will occult a 10.4 mag star in the constellation Scorpius for observers along a path across Japan, China, Hong Kong, India, Arabia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.1 mag to 11.0 mag (the magnitude of the asteroid) for at most 18.6 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: 99 * date and approx. time of event: 2008 May 17, 18:37 - 2008 May 17, 18:55 UT * magnitude of target star: 10.4 * magnitude drop [mag]: 1.1 * estimated maximum duration [s]: 18.6 * Moon: 95 % sunlit, 41° distance * Sun: 160° distance * rough path description: Japan, China, Hong Kong, India, Arabia The occultation path -------------------- * approximate projected width [km]: 226 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 3.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .034 +/- .025) * 1 sigma uncertainty ellipse (major, minor, PA): ( .034", .025", 97° ) * approx speed of asteroid's shadow [km/s]: 8.4605 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7353-02376-1 by 93 Minerva on 2008 May 17 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 ' " Longitude Longitude Longitude Longitude 141 11 9 43 0 0 18 37 51 1 217 -6 139 22 10 142 58 35 138 44 44 143 34 47 140 7 20 42 0 0 18 37 52 2 216 -7 138 19 3 141 54 0 137 41 50 142 29 56 139 2 58 41 0 0 18 37 53 4 215 -8 137 15 16 140 49 1 136 38 14 141 24 43 137 57 59 40 0 0 18 37 55 5 215 -10 136 10 45 139 43 31 135 33 52 140 19 1 136 52 18 39 0 0 18 37 57 6 214 -11 135 5 25 138 37 25 134 28 38 139 12 47 135 45 50 38 0 0 18 38 0 8 213 -12 133 59 10 137 30 38 133 22 27 138 5 53 134 38 29 37 0 0 18 38 4 9 213 -13 132 51 56 136 23 6 132 15 14 136 58 16 133 30 9 36 0 0 18 38 8 10 212 -15 131 43 36 135 14 43 131 6 53 135 49 50 132 20 46 35 0 0 18 38 13 12 211 -16 130 34 4 134 5 22 129 57 17 134 40 29 131 10 12 34 0 0 18 38 19 13 210 -17 129 23 14 132 54 58 128 46 20 133 30 8 129 58 21 33 0 0 18 38 25 14 210 -19 128 10 59 131 43 25 127 33 55 132 18 40 128 45 6 32 0 0 18 38 32 16 209 -20 126 57 11 130 30 36 126 19 54 131 5 58 127 30 18 31 0 0 18 38 39 17 208 -22 125 41 41 129 16 23 125 4 8 129 51 56 126 13 51 30 0 0 18 38 48 18 207 -23 124 24 21 128 0 40 123 46 27 128 36 25 124 55 33 29 0 0 18 38 57 20 207 -25 123 4 59 126 43 16 122 26 41 127 19 17 123 35 15 28 0 0 18 39 7 21 206 -26 121 43 25 125 24 3 121 4 38 126 0 24 122 12 45 27 0 0 18 39 18 23 205 -28 120 19 25 124 2 49 119 40 4 124 39 34 120 47 50 26 0 0 18 39 29 24 204 -29 118 52 44 122 39 24 118 12 44 123 16 37 119 20 14 25 0 0 18 39 42 25 203 -31 117 23 6 121 13 34 116 42 19 121 51 19 117 49 41 24 0 0 18 39 56 27 202 -32 115 50 10 119 45 4 115 8 29 120 23 27 116 15 51 23 0 0 18 40 11 28 201 -34 114 13 33 118 13 37 113 30 48 118 52 43 114 38 19 22 0 0 18 40 27 30 200 -36 112 32 45 116 38 51 111 48 47 117 18 49 112 56 38 21 0 0 18 40 44 31 199 -38 110 47 14 115 0 24 110 1 47 115 41 21 111 10 12 20 0 0 18 41 3 33 197 -39 108 56 17 113 17 47 108 9 5 113 59 53 109 18 21 19 0 0 18 41 23 34 196 -41 106 58 59 111 30 25 106 9 41 112 13 52 107 20 9 18 0 0 18 41 45 35 194 -43 104 54 12 109 37 35 104 2 18 110 22 39 105 14 27 17 0 0 18 42 9 37 192 -45 102 40 22 107 38 24 101 45 12 108 25 24 Latitude Latitude Latitude Latitude 104 0 0 16 26 18 18 42 23 38 191 -46 17 35 10 15 18 59 17 58 57 14 56 26 103 0 0 16 0 7 18 42 35 38 190 -47 17 8 31 14 53 15 17 32 9 14 30 50 102 0 0 15 34 50 18 42 47 39 189 -48 16 42 47 14 28 22 17 6 15 14 6 6 101 0 0 15 10 24 18 42 59 39 189 -49 16 17 56 14 4 21 16 41 15 13 42 12 100 0 0 14 46 51 18 43 11 40 188 -50 15 53 58 13 41 11 16 17 9 13 19 10 99 0 0 14 24 10 18 43 23 40 187 -50 15 30 54 13 18 52 15 53 56 12 56 58 98 0 0 14 2 21 18 43 35 41 186 -51 15 8 42 12 57 23 15 31 36 12 35 36 97 0 0 13 41 23 18 43 48 41 185 -52 14 47 23 12 36 46 15 10 9 12 15 5 96 0 0 13 21 16 18 44 0 42 184 -53 14 26 56 12 16 58 14 49 35 11 55 23 95 0 0 13 2 1 18 44 12 42 183 -53 14 7 21 11 58 0 14 29 53 11 36 32 94 0 0 12 43 36 18 44 25 42 182 -54 13 48 37 11 39 53 14 11 3 11 18 30 93 0 0 12 26 1 18 44 37 43 181 -55 13 30 46 11 22 35 13 53 5 11 1 17 92 0 0 12 9 18 18 44 49 43 179 -55 13 13 45 11 6 7 13 35 59 10 44 54 91 0 0 11 53 24 18 45 2 43 178 -56 12 57 36 10 50 27 13 19 44 10 29 20 90 0 0 11 38 20 18 45 14 43 177 -57 12 42 17 10 35 38 13 4 20 10 14 34 89 0 0 11 24 6 18 45 27 44 176 -57 12 27 50 10 21 36 12 49 48 10 0 38 88 0 0 11 10 42 18 45 39 44 175 -58 12 14 12 10 8 24 12 36 6 9 47 29 87 0 0 10 58 7 18 45 52 44 174 -58 12 1 25 9 56 1 12 23 15 9 35 9 86 0 0 10 46 21 18 46 4 44 173 -59 11 49 29 9 44 25 12 11 14 9 23 38 85 0 0 10 35 24 18 46 17 44 172 -59 11 38 22 9 33 39 12 0 3 9 12 54 84 0 0 10 25 17 18 46 29 44 171 -59 11 28 5 9 23 40 11 49 43 9 2 58 83 0 0 10 15 58 18 46 42 44 170 -60 11 18 37 9 14 29 11 40 12 8 53 50 82 0 0 10 7 28 18 46 54 44 169 -60 11 10 0 9 6 7 11 31 32 8 45 30 81 0 0 9 59 47 18 47 7 44 168 -60 11 2 11 8 58 32 11 23 41 8 37 58 80 0 0 9 52 54 18 47 19 44 167 -61 10 55 12 8 51 46 11 16 40 8 31 13 79 0 0 9 46 50 18 47 31 44 165 -61 10 49 3 8 45 47 11 10 29 8 25 16 78 0 0 9 41 35 18 47 43 44 164 -61 10 43 43 8 40 35 11 5 7 8 20 6 77 0 0 9 37 7 18 47 56 43 163 -61 10 39 12 8 36 12 11 0 34 8 15 43 76 0 0 9 33 28 18 48 8 43 162 -61 10 35 30 8 32 36 10 56 51 8 12 8 75 0 0 9 30 38 18 48 20 43 161 -61 10 32 37 8 29 47 10 53 58 8 9 21 74 0 0 9 28 36 18 48 32 43 160 -61 10 30 33 8 27 46 10 51 54 8 7 20 73 0 0 9 27 22 18 48 44 42 159 -61 10 29 19 8 26 33 10 50 39 8 6 7 72 0 0 9 26 57 18 48 56 42 159 -61 10 28 54 8 26 8 10 50 14 8 5 42 71 0 0 9 27 20 18 49 8 42 158 -60 10 29 18 8 26 30 10 50 38 8 6 4 70 0 0 9 28 31 18 49 19 41 157 -60 10 30 31 8 27 40 10 51 52 8 7 13 69 0 0 9 30 31 18 49 31 41 156 -60 10 32 33 8 29 38 10 53 55 8 9 10 68 0 0 9 33 20 18 49 43 40 155 -60 10 35 26 8 32 23 10 56 49 8 11 55 67 0 0 9 36 58 18 49 54 40 154 -59 10 39 7 8 35 57 11 0 32 8 15 27 66 0 0 9 41 24 18 50 6 39 153 -59 10 43 38 8 40 19 11 5 5 8 19 47 65 0 0 9 46 39 18 50 17 39 152 -59 10 49 0 8 45 29 11 10 28 8 24 55 64 0 0 9 52 44 18 50 28 38 152 -58 10 55 11 8 51 27 11 16 41 8 30 52 63 0 0 9 59 38 18 50 39 38 151 -58 11 2 12 8 58 14 11 23 45 8 37 36 62 0 0 10 7 21 18 50 50 37 150 -57 11 10 3 9 5 49 11 31 40 8 45 9 61 0 0 10 15 54 18 51 1 37 149 -57 11 18 45 9 14 13 11 40 25 8 53 31 60 0 0 10 25 16 18 51 12 36 149 -56 11 28 18 9 23 27 11 50 1 9 2 41 59 0 0 10 35 29 18 51 22 35 148 -55 11 38 41 9 33 29 12 0 28 9 12 40 58 0 0 10 46 32 18 51 33 35 147 -55 11 49 56 9 44 22 12 11 47 9 23 29 57 0 0 10 58 26 18 51 43 34 147 -54 12 2 2 9 56 3 12 23 58 9 35 7 56 0 0 11 11 10 18 51 53 33 146 -53 12 15 0 10 8 35 12 37 0 9 47 34 55 0 0 11 24 46 18 52 3 33 145 -53 12 28 50 10 21 57 12 50 55 10 0 52 54 0 0 11 39 12 18 52 13 32 145 -52 12 43 32 10 36 9 13 5 43 10 14 59 53 0 0 11 54 31 18 52 22 31 144 -51 12 59 7 10 51 12 13 21 23 10 29 57 52 0 0 12 10 41 18 52 32 30 144 -51 13 15 34 11 7 6 13 37 57 10 45 46 51 0 0 12 27 43 18 52 41 30 143 -50 13 32 55 11 23 52 13 55 24 11 2 26 50 0 0 12 45 38 18 52 50 29 143 -49 13 51 9 11 41 28 14 13 45 11 19 57 49 0 0 13 4 26 18 52 59 28 142 -48 14 10 17 11 59 57 14 33 1 11 38 19 48 0 0 13 24 7 18 53 8 27 142 -47 14 30 20 12 19 18 14 53 11 11 57 34 47 0 0 13 44 42 18 53 16 26 141 -46 14 51 17 12 39 32 15 14 16 12 17 41 46 0 0 14 6 11 18 53 25 25 141 -45 15 13 9 13 0 38 15 36 16 12 38 40 45 0 0 14 28 33 18 53 33 25 140 -45 15 35 57 13 22 38 15 59 13 13 0 32 44 0 0 14 51 51 18 53 40 24 140 -44 15 59 40 13 45 31 16 23 5 13 23 17 43 0 0 15 16 3 18 53 48 23 139 -43 16 24 19 14 9 18 16 47 54 13 46 56 42 0 0 15 41 11 18 53 55 22 139 -42 16 49 55 14 34 0 17 13 40 14 11 29 41 0 0 16 7 15 18 54 2 21 138 -41 17 16 28 14 59 36 17 40 24 14 36 56 40 0 0 16 34 14 18 54 9 20 138 -40 17 43 59 15 26 7 18 8 5 15 3 18 39 0 0 17 2 10 18 54 16 19 138 -39 18 12 27 15 53 33 18 36 45 15 30 34 38 0 0 17 31 3 18 54 22 18 137 -38 18 41 53 16 21 54 19 6 23 15 58 45 37 0 0 18 0 53 18 54 28 17 137 -37 19 12 18 16 51 12 19 37 1 16 27 52 36 0 0 18 31 40 18 54 34 16 136 -36 19 43 42 17 21 26 20 8 37 16 57 55 35 0 0 19 3 25 18 54 39 15 136 -35 20 16 5 17 52 36 20 41 14 17 28 54 34 0 0 19 36 9 18 54 44 14 136 -34 20 49 27 18 24 42 21 14 50 18 0 49 33 0 0 20 9 50 18 54 49 13 135 -33 21 23 50 18 57 46 21 49 27 18 33 41 32 0 0 20 44 30 18 54 53 12 135 -32 21 59 12 19 31 47 22 25 5 19 7 29 31 0 0 21 20 9 18 54 57 11 134 -30 22 35 35 20 6 45 23 1 44 19 42 14 30 0 0 21 56 47 18 55 1 10 134 -29 23 12 59 20 42 41 23 39 24 20 17 56 29 0 0 22 34 24 18 55 4 9 134 -28 23 51 23 21 19 34 24 18 6 20 54 35 28 0 0 23 13 0 18 55 7 7 133 -27 24 30 49 21 57 25 24 57 49 21 32 12 27 0 0 23 52 36 18 55 10 6 133 -26 25 11 15 22 36 14 25 38 34 22 10 45 26 0 0 24 33 10 18 55 12 5 132 -25 25 52 43 23 16 1 26 20 21 22 50 16 25 0 0 25 14 44 18 55 14 4 132 -24 26 35 12 23 56 44 27 3 10 23 30 44 24 0 0 25 57 17 18 55 15 3 132 -23 27 18 41 24 38 26 27 47 0 24 12 9 23 0 0 26 40 49 18 55 16 2 131 -21 28 3 12 25 21 4 28 31 52 24 54 30 22 0 0 27 25 20 18 55 16 1 131 -20 .. .. .. 26 4 39 .. .. .. 25 37 48 Uncertainty in time = +/- 4 secs [Prediction of 2008 May 8.0] Data for the target star ------------------------ * name: TYC 7353-02376-1 * constellation : Scorpius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 16 37 26.9329 DE: -34 59 30.584 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .020, .020 ) * V mag [mag]: 10.4 * B mag [mag]: 11.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (93) Minerva approx. diameter [km]: 157 approx. diameter ["]: .151 distance from Earth [AU]: 1.43800 * orbital information: orbit source: Preston date of fit: 2008 May 07 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 876 number of rejected observations: 119 time covered by the observations: 1913 Sep 28 - 2008 Apr 17 1 sigma uncertainty ellipse (major, minor, PA): 0.027, 0.015, 101° remarks: * orbital elements for (93) Minerva : Mean anomaly = 334.80675697 deg Arg. of pericenter = 275.74892497 deg Long. of node = 4.13868501 deg Inclination = 8.55692895 deg Eccentricity = 0.14194605 Semimajor axis = 2.75460433 AU Perihelion dist = 2.36359913 AU Mag: H = 7.81, G = 0.15 Epoch of elements : MJD 54603.78300000 TDT (2008 May 17.783) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 May 17 93 Minerva 18h 46.6m UT 10.4 16 37 26.933-34 59 30.58TYC 7353-02376-1 11.5 11.0 157 18.6 1.438 -2.330 -5.79 91.8866 -34.989 -102.53 19.54 18.7759 -0.14290 0.70490 -4.68014 -0.94891 -0.00127 0.00136 2000 333.9912052008 514.00000275.748925 4.138685 8.5569290.14194605 2.7546043 2.3635991 7.7 5.00.15 RATE 2.1558340 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.034 0.025 97 1.17 0.026 0 54594.5020080517_2376-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 May 08, 03:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org