IOTA/IOTA-ES occultation update for (45) Eugenia / HIP 23043 event on 2008 Mar 09, 05:38 UT Visible from Mexico Summary ------- On 2008 Mar 09 UT, the 215 km diameter asteroid (45) Eugenia will occult a 5.7 mag star in the constellation Taurus for observers along a path across Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 7.4 mag to 13.1 mag (the magnitude of the asteroid) for at most 12.2 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: . The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2008 Mar 09, 05:38 - 2008 Mar 09, 05:43 UT * magnitude of target star: 5.7 * magnitude drop [mag]: 7.4 * estimated maximum duration [s]: 12.2 * Moon: 3 % sunlit, 67° distance * Sun: 86° distance * rough path description: Mexico The occultation path -------------------- * approximate projected width [km]: 215 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .015 +/- .011) * 1 sigma uncertainty ellipse (major, minor, PA): ( .015", .011", 88° ) * approx speed of asteroid's shadow [km/s]: 17.5774 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 23043 by 45 Eugenia on 2008 Mar 9 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 -173 0 0 22 6 9 5 38 19 83 222 -1 21 5 14 23 7 7 20 51 51 23 20 32 -172 0 0 22 22 45 5 38 25 83 226 -2 21 21 57 23 23 36 21 8 35 23 37 0 -171 0 0 22 38 57 5 38 32 82 230 -3 21 38 16 23 39 42 21 24 55 23 53 4 -170 0 0 22 54 46 5 38 38 81 233 -4 21 54 11 23 55 24 21 40 51 24 8 45 -169 0 0 23 10 11 5 38 44 80 235 -4 22 9 42 24 10 43 21 56 24 24 24 3 -168 0 0 23 25 12 5 38 50 79 237 -5 22 24 49 24 25 38 22 11 33 24 38 56 -167 0 0 23 39 49 5 38 56 78 239 -6 22 39 33 24 40 9 22 26 18 24 53 26 -166 0 0 23 54 3 5 39 2 77 241 -7 22 53 52 24 54 16 22 40 38 25 7 32 -165 0 0 24 7 52 5 39 8 76 242 -8 23 7 47 25 8 0 22 54 35 25 21 14 -164 0 0 24 21 17 5 39 14 75 244 -9 23 21 18 25 21 19 23 8 7 25 34 32 -163 0 0 24 34 18 5 39 20 74 245 -10 23 34 25 25 34 14 23 21 15 25 47 26 -162 0 0 24 46 55 5 39 26 73 246 -11 23 47 7 25 46 45 23 33 58 25 59 56 -161 0 0 24 59 7 5 39 31 73 247 -12 23 59 25 25 58 52 23 46 18 26 12 2 -160 0 0 25 10 55 5 39 37 72 248 -13 24 11 19 26 10 35 23 58 12 26 23 43 -159 0 0 25 22 19 5 39 43 71 249 -14 24 22 48 26 21 54 24 9 43 26 35 1 -158 0 0 25 33 19 5 39 48 70 250 -15 24 33 53 26 32 49 24 20 48 26 45 55 -157 0 0 25 43 54 5 39 54 69 251 -16 24 44 33 26 43 19 24 31 30 26 56 24 -156 0 0 25 54 5 5 39 59 68 251 -17 24 54 48 26 53 25 24 41 46 27 6 29 -155 0 0 26 3 52 5 40 5 67 252 -18 25 4 40 27 3 7 24 51 38 27 16 10 -154 0 0 26 13 14 5 40 10 66 253 -18 25 14 6 27 12 25 25 1 6 27 25 27 -153 0 0 26 22 12 5 40 16 65 254 -19 25 23 9 27 21 19 25 10 9 27 34 20 -152 0 0 26 30 46 5 40 21 64 254 -20 25 31 46 27 29 49 25 18 48 27 42 49 -151 0 0 26 38 55 5 40 26 63 255 -21 25 39 59 27 37 54 25 27 2 27 50 53 -150 0 0 26 46 40 5 40 31 62 256 -22 25 47 48 27 45 35 25 34 52 27 58 34 -149 0 0 26 54 1 5 40 37 61 256 -23 25 55 12 27 52 53 25 42 17 28 5 50 -148 0 0 27 0 57 5 40 42 61 257 -24 26 2 12 27 59 46 25 49 17 28 12 42 -147 0 0 27 7 30 5 40 47 60 258 -25 26 8 48 28 6 15 25 55 53 28 19 11 -146 0 0 27 13 38 5 40 52 59 258 -26 26 14 59 28 12 20 26 2 5 28 25 15 -145 0 0 27 19 21 5 40 57 58 259 -26 26 20 45 28 18 1 26 7 52 28 30 55 -144 0 0 27 24 41 5 41 2 57 259 -27 26 26 7 28 23 18 26 13 15 28 36 12 -143 0 0 27 29 36 5 41 6 56 260 -28 26 31 5 28 28 10 26 18 13 28 41 4 -142 0 0 27 34 7 5 41 11 55 261 -29 26 35 39 28 32 39 26 22 47 28 45 33 -141 0 0 27 38 15 5 41 16 54 261 -30 26 39 48 28 36 45 26 26 56 28 49 37 -140 0 0 27 41 58 5 41 20 53 262 -31 26 43 32 28 40 26 26 30 42 28 53 18 -139 0 0 27 45 16 5 41 25 52 262 -32 26 46 53 28 43 43 26 34 3 28 56 35 -138 0 0 27 48 11 5 41 30 52 263 -33 26 49 49 28 46 36 26 36 59 28 59 28 -137 0 0 27 50 42 5 41 34 51 263 -33 26 52 21 28 49 6 26 39 31 29 1 57 -136 0 0 27 52 49 5 41 38 50 264 -34 26 54 29 28 51 12 26 41 40 29 4 3 -135 0 0 27 54 32 5 41 43 49 265 -35 26 56 13 28 52 54 26 43 23 29 5 45 -134 0 0 27 55 50 5 41 47 48 265 -36 26 57 32 28 54 12 26 44 43 29 7 3 -133 0 0 27 56 45 5 41 51 47 266 -37 26 58 28 28 55 6 26 45 38 29 7 57 -132 0 0 27 57 16 5 41 55 46 266 -38 26 58 59 28 55 37 26 46 10 29 8 28 -131 0 0 27 57 23 5 41 59 45 267 -39 26 59 6 28 55 44 26 46 17 29 8 35 -130 0 0 27 57 6 5 42 3 44 267 -39 26 58 49 28 55 27 26 46 0 29 8 18 -129 0 0 27 56 26 5 42 7 43 268 -40 26 58 8 28 54 47 26 45 18 29 7 38 -128 0 0 27 55 21 5 42 11 43 268 -41 26 57 2 28 53 43 26 44 13 29 6 34 -127 0 0 27 53 53 5 42 15 42 269 -42 26 55 33 28 52 15 26 42 44 29 5 6 -126 0 0 27 52 0 5 42 19 41 269 -43 26 53 40 28 50 24 26 40 50 29 3 15 -125 0 0 27 49 44 5 42 23 40 270 -44 26 51 23 28 48 9 26 38 33 29 1 1 -124 0 0 27 47 4 5 42 26 39 270 -45 26 48 42 28 45 30 26 35 51 28 58 22 -123 0 0 27 44 1 5 42 30 38 271 -45 26 45 36 28 42 28 26 32 46 28 55 21 -122 0 0 27 40 33 5 42 33 37 271 -46 26 42 7 28 39 3 26 29 16 28 51 55 -121 0 0 27 36 42 5 42 37 36 272 -47 26 38 14 28 35 13 26 25 23 28 48 6 -120 0 0 27 32 27 5 42 40 35 272 -48 26 33 57 28 31 1 26 21 5 28 43 54 -119 0 0 27 27 49 5 42 43 34 273 -49 26 29 16 28 26 24 26 16 24 28 39 18 -118 0 0 27 22 46 5 42 47 34 273 -50 26 24 11 28 21 24 26 11 19 28 34 19 -117 0 0 27 17 20 5 42 50 33 274 -50 26 18 43 28 16 1 26 5 49 28 28 56 -116 0 0 27 11 31 5 42 53 32 274 -51 26 12 50 28 10 14 25 59 56 28 23 10 -115 0 0 27 5 17 5 42 56 31 275 -52 26 6 34 28 4 4 25 53 39 28 17 0 -114 0 0 26 58 40 5 42 59 30 275 -53 25 59 54 27 57 30 25 46 59 28 10 27 -113 0 0 26 51 40 5 43 2 29 276 -54 25 52 50 27 50 33 25 39 54 28 3 31 -112 0 0 26 44 16 5 43 4 28 276 -55 25 45 23 27 43 13 25 32 26 27 56 11 -111 0 0 26 36 28 5 43 7 27 277 -55 25 37 31 27 35 29 25 24 33 27 48 28 -110 0 0 26 28 17 5 43 10 26 277 -56 25 29 16 27 27 21 25 16 18 27 40 21 -109 0 0 26 19 42 5 43 12 25 278 -57 25 20 37 27 18 50 25 7 38 27 31 52 -108 0 0 26 10 44 5 43 15 24 278 -58 25 11 35 27 9 56 24 58 35 27 22 58 -107 0 0 26 1 22 5 43 17 24 278 -59 25 2 9 27 0 39 24 49 8 27 13 42 -106 0 0 25 51 37 5 43 19 23 279 -59 24 52 20 26 50 58 24 39 18 27 4 2 -105 0 0 25 41 29 5 43 21 22 279 -60 24 42 7 26 40 54 24 29 4 26 54 0 -104 0 0 25 30 57 5 43 24 21 280 -61 24 31 30 26 30 27 24 18 26 26 43 34 -103 0 0 25 20 2 5 43 26 20 280 -62 24 20 31 26 19 37 24 7 25 26 32 44 -102 0 0 25 8 44 5 43 28 19 281 -63 24 9 8 26 8 24 23 56 1 26 21 32 -101 0 0 24 57 3 5 43 29 18 281 -63 23 57 21 25 56 48 23 44 14 26 9 57 -100 0 0 24 44 58 5 43 31 17 281 -64 23 45 11 25 44 48 23 32 3 25 57 59 - 99 0 0 24 32 31 5 43 33 16 282 -65 23 32 39 25 32 26 23 19 29 25 45 38 - 98 0 0 24 19 40 5 43 35 15 282 -66 23 19 43 25 19 41 23 6 32 25 32 54 - 97 0 0 24 6 27 5 43 36 14 283 -66 23 6 24 25 6 33 22 53 12 25 19 47 - 96 0 0 23 52 51 5 43 38 13 283 -67 22 52 42 24 53 3 22 39 29 25 6 18 - 95 0 0 23 38 52 5 43 39 12 284 -68 22 38 38 24 39 9 22 25 23 24 52 26 - 94 0 0 23 24 30 5 43 40 11 284 -68 22 24 11 24 24 54 22 10 55 24 38 11 - 93 0 0 23 9 46 5 43 41 10 284 -69 22 9 21 24 10 16 21 56 4 24 23 35 - 92 0 0 22 54 40 5 43 42 9 285 -70 21 54 9 23 55 15 21 40 51 24 8 35 - 91 0 0 22 39 12 5 43 43 8 285 -70 21 38 35 23 39 53 21 25 15 23 53 14 - 90 0 0 22 23 21 5 43 44 8 286 -71 21 22 38 23 24 8 21 9 17 23 37 31 - 89 0 0 22 7 9 5 43 45 7 286 -71 21 6 20 23 8 1 20 52 58 23 21 26 - 88 0 0 21 50 34 5 43 46 6 286 -72 20 49 39 22 51 33 20 36 16 23 4 59 - 87 0 0 21 33 38 5 43 46 5 287 -72 20 32 37 22 34 43 20 19 13 22 48 10 - 86 0 0 21 16 21 5 43 47 4 287 -73 20 15 14 22 17 32 20 1 48 22 31 0 - 85 0 0 20 58 42 5 43 47 3 287 -73 19 57 29 21 59 59 19 44 2 22 13 29 - 84 0 0 20 40 42 5 43 47 2 288 -74 19 39 23 21 42 5 19 25 55 21 55 36 - 83 0 0 20 22 22 5 43 47 1 288 -74 19 20 57 21 23 51 19 7 27 21 37 23 Uncertainty in time = +/- 2 secs [Prediction of 2008 Feb 27.0] Data for the target star ------------------------ * name: HIP 23043 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 04 57 22.3337 DE: +17 09 13.135 * position source: mpos:HIP pm:HIP plx:HIP * standard error: RA,DE ["]: ( .013, .010 ) * V mag [mag]: 5.7 * B mag [mag]: 6.8 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (45) Eugenia approx. diameter [km]: 215 approx. diameter ["]: .107 distance from Earth [AU]: 2.77000 * orbital information: orbit source: Preston date of fit: 2008 Feb 27 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 1415 number of rejected observations: 182 time covered by the observations: 1910 Feb 14 - 2008 Feb 17 1 sigma uncertainty ellipse (major, minor, PA): 0.008, 0.006, 81° remarks: * orbital elements for (45) Eugenia : Mean anomaly = 228.13927571 deg Arg. of pericenter = 85.47730636 deg Long. of node = 147.92281001 deg Inclination = 6.60909366 deg Eccentricity = 0.08178098 Semimajor axis = 2.72122665 AU Perihelion dist = 2.49868206 AU Mag: H = 7.40, G = 0.07 Epoch of elements : MJD 54534.23500000 TDT (2008 Mar 09.235) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Mar 9 45 Eugenia 5h 37.7m UT 5.7 4 57 22.334 17 9 13.13HIP 23043 6.8 13.1 215 12.2 2.770 2.094 9.54 -177.3806 17.151 98.20 -4.34 5.6291 -0.01910 0.05577 9.45515 3.00501 0.00585 0.00059 2000 227.2094312008 3 5.00000 85.477306147.922810 6.6090940.08178098 2.7212267 2.4986821 7.5 5.00.07 RATE 2.1956190 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.015 0.011 88 1.11 0.012 2 13 1190 6 0 54523.5020080309__23043 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Feb 27, 19:59 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org