IOTA/IOTA-ES occultation update for (1936) Lugano / HIP 26351 event on 2008 Oct 14, 10:43 UT Visible from N Canada, Alaska Summary ------- On 2008 Oct 14 UT, the 25 km diameter asteroid (1936) Lugano will occult a 8.2 mag star in the constellation Taurus for observers along a path across N Canada, Alaska. In the case of an occultation, the combined light of the asteroid and the star will drop by 7.6 mag to 15.8 mag (the magnitude of the asteroid) for at most 6.1 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: 35 * date and approx. time of event: 2008 Oct 14, 10:20 - 2008 Oct 14, 10:50 UT * midpoint of event [JD]: 2454753.94718333 * magnitude of target star: 8.2 * magnitude drop [mag]: 7.6 * estimated maximum duration [s]: 6.1 * Moon: 100 % sunlit, 69° distance * Sun: 116° distance * rough path description: N Canada, Alaska The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 1.87 * 1 sigma uncertainty interval [seconds]: +/- 17.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .053 +/- .032) * 1 sigma uncertainty ellipse (major, minor, PA): ( .053", .031", 98° ) * approx speed of asteroid's shadow [km/s]: 4.0874 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 26351 by 1936 Lugano on 2008 Oct 14 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 151 0 0 38 42 9 10 20 56 0 53 -36 38 32 23 38 51 56 .. .. .. 39 28 43 152 0 0 39 17 6 10 20 56 1 54 -36 39 7 21 39 26 53 .. .. .. 40 3 37 153 0 0 39 51 41 10 20 57 2 55 -37 39 41 56 40 1 27 .. .. .. 40 38 8 154 0 0 40 25 52 10 20 58 3 55 -37 40 16 8 40 35 37 .. .. .. 41 12 15 155 0 0 40 59 38 10 21 0 4 56 -38 40 49 55 41 9 22 40 13 45 41 45 56 156 0 0 41 32 59 10 21 2 5 57 -38 41 23 17 41 42 42 40 47 11 42 19 12 157 0 0 42 5 54 10 21 5 6 57 -39 41 56 13 42 15 36 41 20 12 42 52 0 158 0 0 42 38 22 10 21 8 7 58 -39 42 28 42 42 48 2 41 52 46 43 24 22 159 0 0 43 10 21 10 21 12 8 59 -39 43 0 43 43 20 0 42 24 52 43 56 14 160 0 0 43 41 52 10 21 16 9 59 -40 43 32 16 43 51 29 42 56 30 44 27 38 161 0 0 44 12 54 10 21 20 9 60 -40 44 3 20 44 22 30 43 27 40 44 58 32 162 0 0 44 43 26 10 21 25 10 61 -40 44 33 53 44 53 0 43 58 20 45 28 55 163 0 0 45 13 28 10 21 30 11 62 -41 45 3 57 45 23 0 44 28 30 45 58 48 164 0 0 45 42 58 10 21 36 12 62 -41 45 33 29 45 52 28 44 58 10 46 28 9 165 0 0 46 11 58 10 21 41 13 63 -41 46 2 31 46 21 26 45 27 19 46 56 59 166 0 0 46 40 26 10 21 47 14 64 -41 46 31 1 46 49 52 45 55 56 47 25 17 167 0 0 47 8 22 10 21 54 15 65 -42 46 58 59 47 17 46 46 24 2 47 53 3 168 0 0 47 35 46 10 22 1 15 65 -42 47 26 25 47 45 7 46 51 36 48 20 16 169 0 0 48 2 37 10 22 7 16 66 -42 47 53 18 48 11 56 47 18 38 48 46 57 170 0 0 48 28 56 10 22 15 17 67 -42 48 19 40 48 38 13 47 45 7 49 13 4 171 0 0 48 54 42 10 22 22 18 68 -42 48 45 28 49 3 57 48 11 5 49 38 39 172 0 0 49 19 55 10 22 30 19 69 -42 49 10 44 49 29 7 48 36 29 50 3 41 173 0 0 49 44 36 10 22 38 19 69 -43 49 35 27 49 53 46 49 1 21 50 28 10 174 0 0 50 8 44 10 22 46 20 70 -43 49 59 37 50 17 51 49 25 40 50 52 6 175 0 0 50 32 19 10 22 54 21 71 -43 50 23 15 50 41 24 49 49 27 51 15 29 176 0 0 50 55 21 10 23 3 22 72 -43 50 46 20 51 4 24 50 12 41 51 38 20 177 0 0 51 17 51 10 23 12 22 73 -43 51 8 52 51 26 51 50 35 23 52 0 38 178 0 0 51 39 49 10 23 21 23 74 -43 51 30 52 51 48 46 50 57 32 52 22 23 179 0 0 52 1 14 10 23 30 24 75 -43 51 52 20 52 10 9 51 19 10 52 43 36 180 0 0 52 22 7 10 23 39 25 76 -43 52 13 16 52 31 0 51 40 15 53 4 18 -179 0 0 52 42 29 10 23 48 25 76 -43 52 33 40 52 51 19 52 0 48 53 24 27 -178 0 0 53 2 19 10 23 58 26 77 -43 52 53 32 53 11 6 52 20 50 53 44 5 -177 0 0 53 21 38 10 24 7 27 78 -43 53 12 54 53 30 22 52 40 21 54 3 12 -176 0 0 53 40 25 10 24 17 27 79 -43 53 31 44 53 49 8 52 59 20 54 21 47 -175 0 0 53 58 42 10 24 27 28 80 -43 53 50 3 54 7 22 53 17 48 54 39 52 -174 0 0 54 16 29 10 24 37 29 81 -43 54 7 52 54 25 6 53 35 46 54 57 27 -173 0 0 54 33 45 10 24 47 29 82 -43 54 25 11 54 42 20 53 53 14 55 14 32 -172 0 0 54 50 32 10 24 57 30 83 -43 54 42 0 54 59 4 54 10 12 55 31 7 -171 0 0 55 6 49 10 25 7 31 84 -42 54 58 19 55 15 19 54 26 40 55 47 13 -170 0 0 55 22 37 10 25 17 31 85 -42 55 14 10 55 31 4 54 42 39 56 2 49 -169 0 0 55 37 56 10 25 28 32 86 -42 55 29 31 55 46 21 54 58 9 56 17 57 -168 0 0 55 52 46 10 25 38 32 87 -42 55 44 24 56 1 9 55 13 10 56 32 37 -167 0 0 56 7 8 10 25 49 33 88 -42 55 58 48 56 15 29 55 27 43 56 46 49 -166 0 0 56 21 3 10 25 59 34 89 -42 56 12 45 56 29 22 55 41 48 57 0 33 -165 0 0 56 34 30 10 26 10 34 90 -42 56 26 14 56 42 47 55 55 25 57 13 49 -164 0 0 56 47 30 10 26 21 35 91 -42 56 39 16 56 55 44 56 8 35 57 26 39 -163 0 0 57 0 3 10 26 31 35 92 -41 56 51 51 57 8 15 56 21 18 57 39 3 -162 0 0 57 12 10 10 26 42 36 93 -41 57 4 0 57 20 20 56 33 34 57 50 59 -161 0 0 57 23 50 10 26 53 36 94 -41 57 15 42 57 31 58 56 45 23 58 2 31 -160 0 0 57 35 5 10 27 4 37 95 -41 57 26 59 57 43 11 56 56 47 58 13 36 -159 0 0 57 45 53 10 27 15 37 96 -41 57 37 49 57 53 58 57 7 44 58 24 16 -158 0 0 57 56 17 10 27 26 38 97 -40 57 48 15 58 4 20 57 18 16 58 34 31 -157 0 0 58 6 16 10 27 37 38 98 -40 57 58 15 58 14 17 57 28 23 58 44 22 -156 0 0 58 15 50 10 27 48 39 99 -40 58 7 51 58 23 49 57 38 5 58 53 48 -155 0 0 58 25 0 10 27 59 40 101 -40 58 17 2 58 32 57 57 47 23 59 2 49 -154 0 0 58 33 45 10 28 10 40 102 -40 58 25 50 58 41 41 57 56 16 59 11 28 -153 0 0 58 42 7 10 28 22 41 103 -39 58 34 13 58 50 1 58 4 44 59 19 42 -152 0 0 58 50 5 10 28 33 41 104 -39 58 42 12 58 57 58 58 12 49 59 27 33 -151 0 0 58 57 39 10 28 44 42 105 -39 58 49 48 59 5 31 58 20 31 59 35 1 -150 0 0 59 4 51 10 28 56 42 106 -39 58 57 1 59 12 41 58 27 48 59 42 6 -149 0 0 59 11 40 10 29 7 42 107 -38 59 3 51 59 19 29 58 34 43 59 48 49 -148 0 0 59 18 5 10 29 18 43 108 -38 59 10 18 59 25 53 58 41 14 59 55 9 -147 0 0 59 24 9 10 29 30 43 110 -38 59 16 22 59 31 56 58 47 23 60 1 7 -146 0 0 59 29 50 10 29 41 44 111 -38 59 22 4 59 37 35 58 53 9 60 6 42 -145 0 0 59 35 8 10 29 53 44 112 -37 59 27 24 59 42 53 58 58 33 60 11 56 -144 0 0 59 40 5 10 30 5 45 113 -37 59 32 22 59 47 49 59 3 34 60 16 48 -143 0 0 59 44 40 10 30 16 45 114 -37 59 36 58 59 52 23 59 8 14 60 21 19 -142 0 0 59 48 54 10 30 28 46 115 -37 59 41 12 59 56 36 59 12 31 60 25 28 -141 0 0 59 52 45 10 30 40 46 117 -36 59 45 4 60 0 26 59 16 26 60 29 16 -140 0 0 59 56 15 10 30 52 47 118 -36 59 48 35 60 3 56 59 20 0 60 32 43 -139 0 0 59 59 24 10 31 4 47 119 -36 59 51 45 60 7 4 59 23 12 60 35 49 -138 0 0 60 2 12 10 31 16 47 120 -35 59 54 33 60 9 51 59 26 2 60 38 34 -137 0 0 60 4 38 10 31 28 48 122 -35 59 57 0 60 12 17 59 28 31 60 40 58 -136 0 0 60 6 44 10 31 40 48 123 -35 59 59 6 60 14 22 59 30 38 60 43 1 -135 0 0 60 8 28 10 31 52 49 124 -35 60 0 50 60 16 6 59 32 24 60 44 43 -134 0 0 60 9 51 10 32 4 49 125 -34 60 2 14 60 17 29 59 33 49 60 46 5 -133 0 0 60 10 53 10 32 16 50 127 -34 60 3 16 60 18 31 59 34 53 60 47 6 -132 0 0 60 11 34 10 32 29 50 128 -34 60 3 58 60 19 12 59 35 35 60 47 46 -131 0 0 60 11 55 10 32 41 50 129 -33 60 4 18 60 19 32 59 35 56 60 48 6 -130 0 0 60 11 54 10 32 53 51 131 -33 60 4 18 60 19 31 59 35 55 60 48 5 -129 0 0 60 11 32 10 33 6 51 132 -33 60 3 56 60 19 9 59 35 34 60 47 43 -128 0 0 60 10 50 10 33 19 52 133 -32 60 3 13 60 18 27 59 34 51 60 47 1 -127 0 0 60 9 46 10 33 31 52 135 -32 60 2 9 60 17 23 59 33 46 60 45 58 -126 0 0 60 8 21 10 33 44 52 136 -32 60 0 44 60 15 58 59 32 21 60 44 34 -125 0 0 60 6 35 10 33 57 53 137 -31 59 58 58 60 14 13 59 30 33 60 42 49 -124 0 0 60 4 28 10 34 10 53 139 -31 59 56 50 60 12 6 59 28 24 60 40 43 -123 0 0 60 1 59 10 34 23 53 140 -31 59 54 21 60 9 37 59 25 54 60 38 16 -122 0 0 59 59 9 10 34 36 54 142 -30 59 51 31 60 6 48 59 23 1 60 35 28 -121 0 0 59 55 57 10 34 49 54 143 -30 59 48 18 60 3 36 59 19 47 60 32 19 -120 0 0 59 52 24 10 35 3 55 145 -30 59 44 44 60 0 3 59 16 11 60 28 48 -119 0 0 59 48 28 10 35 16 55 146 -29 59 40 48 59 56 9 59 12 12 60 24 56 -118 0 0 59 44 11 10 35 30 55 148 -29 59 36 30 59 51 52 59 7 51 60 20 42 -117 0 0 59 39 31 10 35 44 56 149 -28 59 31 49 59 47 13 59 3 8 60 16 6 -116 0 0 59 34 29 10 35 57 56 151 -28 59 26 46 59 42 12 58 58 2 60 11 8 -115 0 0 59 29 4 10 36 11 56 152 -28 59 21 20 59 36 48 58 52 32 60 5 47 -114 0 0 59 23 16 10 36 26 57 154 -27 59 15 32 59 31 1 58 46 40 60 0 4 -113 0 0 59 17 5 10 36 40 57 155 -27 59 9 20 59 24 51 58 40 24 59 53 59 -112 0 0 59 10 31 10 36 54 57 157 -26 59 2 45 59 18 18 58 33 45 59 47 30 -111 0 0 59 3 33 10 37 9 58 159 -26 58 55 46 59 11 22 58 26 41 59 40 38 -110 0 0 58 56 12 10 37 23 58 160 -26 58 48 23 59 4 1 58 19 14 59 33 22 -109 0 0 58 48 26 10 37 38 58 162 -25 58 40 36 58 56 17 58 11 22 59 25 43 -108 0 0 58 40 16 10 37 53 58 164 -25 58 32 24 58 48 8 58 3 5 59 17 39 -107 0 0 58 31 41 10 38 8 59 165 -24 58 23 47 58 39 34 57 54 23 59 9 11 -106 0 0 58 22 40 10 38 23 59 167 -24 58 14 46 58 30 36 57 45 15 59 0 18 -105 0 0 58 13 15 10 38 39 59 169 -23 58 5 18 58 21 12 57 35 42 58 51 0 -104 0 0 58 3 23 10 38 54 60 171 -23 57 55 25 58 11 22 57 25 42 58 41 17 -103 0 0 57 53 5 10 39 10 60 173 -23 57 45 6 58 1 6 57 15 17 58 31 7 -102 0 0 57 42 21 10 39 26 60 174 -22 57 34 19 57 50 23 57 4 24 58 20 32 -101 0 0 57 31 10 10 39 42 60 176 -22 57 23 6 57 39 14 56 53 3 58 9 29 -100 0 0 57 19 31 10 39 58 61 178 -21 57 11 25 57 27 37 56 41 16 57 58 0 - 99 0 0 57 7 24 10 40 15 61 180 -21 56 59 17 57 15 32 56 28 59 57 46 3 - 98 0 0 56 54 49 10 40 31 61 182 -20 56 46 40 57 2 59 56 16 15 57 33 38 - 97 0 0 56 41 46 10 40 48 61 184 -20 56 33 34 56 49 58 56 3 1 57 20 44 - 96 0 0 56 28 13 10 41 5 61 186 -19 56 19 59 56 36 27 55 49 18 57 7 22 - 95 0 0 56 14 10 10 41 23 61 188 -19 56 5 54 56 22 27 55 35 5 56 53 30 - 94 0 0 55 59 38 10 41 40 62 190 -18 55 51 19 56 7 56 55 20 21 56 39 8 - 93 0 0 55 44 34 10 41 58 62 192 -18 55 36 14 55 52 56 55 5 7 56 24 16 - 92 0 0 55 29 0 10 42 16 62 194 -17 55 20 37 55 37 23 54 49 21 56 8 53 - 91 0 0 55 12 54 10 42 34 62 197 -16 55 4 28 55 21 20 54 33 3 55 52 59 - 90 0 0 54 56 15 10 42 52 62 199 -16 54 47 47 55 4 44 54 16 13 55 36 33 - 89 0 0 54 39 4 10 43 11 62 201 -15 54 30 33 54 47 36 53 58 49 55 19 34 - 88 0 0 54 21 20 10 43 30 62 203 -15 54 12 47 54 29 54 53 40 52 55 2 3 - 87 0 0 54 3 2 10 43 49 62 205 -14 53 54 26 54 11 39 53 22 22 54 43 58 - 86 0 0 53 44 10 10 44 9 62 208 -13 53 35 31 53 52 49 53 3 17 54 25 19 - 85 0 0 53 24 43 10 44 28 62 210 -13 53 16 1 53 33 25 52 43 36 54 6 5 - 84 0 0 53 4 40 10 44 48 62 212 -12 52 55 56 53 13 25 52 23 21 53 46 16 - 83 0 0 52 44 2 10 45 8 62 214 -12 52 35 15 52 52 50 52 2 29 53 25 52 - 82 0 0 52 22 48 10 45 29 62 217 -11 52 13 57 52 31 39 51 41 1 53 4 51 - 81 0 0 52 0 56 10 45 49 62 219 -10 51 52 3 52 9 50 51 18 56 52 43 14 - 80 0 0 51 38 28 10 46 10 62 221 -10 51 29 31 51 47 24 50 56 13 52 20 59 - 79 0 0 51 15 21 10 46 31 61 224 -9 51 6 22 51 24 21 50 32 52 51 58 7 - 78 0 0 50 51 37 10 46 53 61 226 -8 50 42 34 51 0 40 50 8 54 51 34 37 - 77 0 0 50 27 13 10 47 14 61 228 -7 50 18 8 50 36 19 49 44 16 51 10 28 - 76 0 0 50 2 11 10 47 36 61 230 -7 49 53 3 50 11 20 49 19 0 50 45 41 - 75 0 0 49 36 30 10 47 59 61 232 -6 49 27 18 49 45 42 48 53 4 50 20 14 - 74 0 0 49 10 8 10 48 21 60 235 -5 49 0 54 49 19 23 48 26 28 49 54 7 - 73 0 0 48 43 7 10 48 44 60 237 -4 48 33 50 48 52 25 47 59 13 49 27 20 - 72 0 0 48 15 26 10 49 7 59 239 -4 48 6 5 48 24 47 47 31 17 48 59 53 - 71 0 0 47 47 4 10 49 30 59 241 -3 47 37 41 47 56 28 47 2 41 48 31 46 - 70 0 0 47 18 2 10 49 53 59 243 -2 47 8 35 47 27 29 46 33 25 48 2 58 - 69 0 0 46 48 19 10 50 17 58 245 -1 46 38 50 46 57 49 46 3 29 47 33 29 - 68 0 0 46 17 55 10 50 40 58 247 0 46 8 23 46 27 28 45 32 52 47 3 20 Uncertainty in time = +/- 19 secs [Prediction of 2008 Sep 5.0] Data for the target star ------------------------ * name: HIP 26351 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 05 36 39.7995 DE: +27 54 42.276 * position source: mpos:HIP pm:HIP plx:HIP * standard error: RA,DE ["]: ( .020, .014 ) * V mag [mag]: 8.2 * B mag [mag]: 8.6 * Apparent position with proper motion RA(deg): 84.3104064047 DE(deg): 27.9184178022 * Equation of equinoxes (radians) : 0.000047385488141 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1936) Lugano approx. diameter [km]: 25 approx. diameter ["]: .017 distance from Earth [AU]: 2.06400 * orbital information: orbit source: Preston date of fit: 2008 Sep 04 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 650 number of rejected observations: 16 time covered by the observations: 1951 Nov 29 - 2008 Jan 10 1 sigma uncertainty ellipse (major, minor, PA): 0.049, 0.028, 99° remarks: * orbital elements for (1936) Lugano : Mean anomaly = 279.98576095 deg Arg. of pericenter = 255.54006084 deg Long. of node = 265.24479483 deg Inclination = 10.25261698 deg Eccentricity = 0.13814949 Semimajor axis = 2.67505685 AU Perihelion dist = 2.30549912 AU Mag: H = 11.65, G = 0.15 Epoch of elements : MJD 54753.44700000 TDT (2008 Oct 14.447) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Oct 14 1936 Lugano 10h 43.9m UT 8.2 5 36 39.800 27 54 42.28HIP 26351 8.6 15.8 25 6.1 2.064 0.707 -2.90 -100.1734 27.913 15.50 -8.37 10.7324 0.13691 0.44226 2.20490 -0.67892 -0.00509 -0.00041 2000 279.20925320081011.00000255.540061265.244795 10.2526170.13814949 2.6750569 2.305499111.1 5.00.15 RATE 2.2527060 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.053 0.031 98 2.87 0.031 0 54714.5020081014__26351 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Sep 11, 19:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org