IOTA/IOTA-ES occultation update for (184) Dejopeja / 2UCAC 40006780 event on 2008 Mar 25, 04:35 UT Visible from USA, Canada Summary ------- On 2008 Mar 25 UT, the 67 km diameter asteroid (184) Dejopeja will occult a 13.4 mag star in the constellation Gemini for observers along a path across USA, Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.0 mag to 13.8 mag (the magnitude of the asteroid) for at most 6.8 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: 48 * date and approx. time of event: 2008 Mar 25, 04:30 - 2008 Mar 25, 04:41 UT * magnitude of target star: 13.4 * magnitude drop [mag]: 1.0 * estimated maximum duration [s]: 6.8 * Moon: 89 % sunlit, 117° distance * Sun: 102° distance * rough path description: USA, Canada The occultation path -------------------- * approximate projected width [km]: 82 * 1 sigma uncertainty interval [path widths]: +/- 1.34 * 1 sigma uncertainty interval [seconds]: +/- 8.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .045 +/- .047) * 1 sigma uncertainty ellipse (major, minor, PA): ( .047", .045", 1° ) * approx speed of asteroid's shadow [km/s]: 9.7491 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of 2UCAC 40006780 by 184 Dejopeja on 2008 Mar 25 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 -152 0 0 59 55 14 4 30 4 52 166 0 59 32 57 60 17 38 58 33 42 61 18 10 -151 0 0 59 50 47 4 30 10 53 167 -1 59 28 28 60 13 12 58 29 8 61 13 50 -150 0 0 59 46 2 4 30 16 53 169 -1 59 23 41 60 8 29 58 24 16 61 9 12 -149 0 0 59 40 59 4 30 22 53 170 -2 59 18 36 60 3 28 58 19 6 61 4 17 -148 0 0 59 35 38 4 30 28 53 172 -2 59 13 13 59 58 10 58 13 37 60 59 4 -147 0 0 59 29 59 4 30 34 53 173 -3 59 7 31 59 52 33 58 7 50 60 53 34 -146 0 0 59 24 2 4 30 40 54 175 -3 59 1 32 59 46 38 58 1 44 60 47 46 -145 0 0 59 17 46 4 30 46 54 177 -4 58 55 14 59 40 25 57 55 19 60 41 40 -144 0 0 59 11 12 4 30 52 54 178 -5 58 48 37 59 33 54 57 48 35 60 35 15 -143 0 0 59 4 19 4 30 58 54 180 -5 58 41 41 59 27 4 57 41 32 60 28 33 -142 0 0 58 57 8 4 31 4 54 181 -6 58 34 27 59 19 55 57 34 11 60 21 32 -141 0 0 58 49 37 4 31 10 54 183 -6 58 26 53 59 12 27 57 26 29 60 14 13 -140 0 0 58 41 47 4 31 17 54 185 -7 58 19 0 59 4 41 57 18 29 60 6 35 -139 0 0 58 33 38 4 31 23 54 186 -7 58 10 48 58 56 35 57 10 8 59 58 38 -138 0 0 58 25 10 4 31 29 54 188 -8 58 2 17 58 48 10 57 1 28 59 50 22 -137 0 0 58 16 22 4 31 35 54 190 -8 57 53 25 58 39 25 56 52 28 59 41 46 -136 0 0 58 7 14 4 31 42 55 191 -9 57 44 14 58 30 21 56 43 8 59 32 52 -135 0 0 57 57 46 4 31 48 55 193 -10 57 34 43 58 20 57 56 33 27 59 23 37 -134 0 0 57 47 58 4 31 55 55 195 -10 57 24 51 58 11 12 56 23 26 59 14 3 -133 0 0 57 37 50 4 32 1 55 196 -11 57 14 39 58 1 8 56 13 4 59 4 9 -132 0 0 57 27 21 4 32 8 55 198 -11 57 4 7 57 50 43 56 2 22 58 53 55 -131 0 0 57 16 32 4 32 15 55 200 -12 56 53 13 57 39 58 55 51 18 58 43 20 -130 0 0 57 5 22 4 32 21 55 201 -12 56 41 59 57 28 51 55 39 54 58 32 25 -129 0 0 56 53 51 4 32 28 55 203 -13 56 30 24 57 17 24 55 28 8 58 21 9 -128 0 0 56 41 58 4 32 35 54 205 -14 56 18 27 57 5 36 55 16 0 58 9 32 -127 0 0 56 29 44 4 32 42 54 207 -14 56 6 9 56 53 26 55 3 31 57 57 34 -126 0 0 56 17 9 4 32 49 54 208 -15 55 53 29 56 40 55 54 50 41 57 45 15 -125 0 0 56 4 11 4 32 56 54 210 -15 55 40 28 56 28 2 54 37 28 57 32 34 -124 0 0 55 50 52 4 33 3 54 212 -16 55 27 4 56 14 47 54 23 53 57 19 31 -123 0 0 55 37 11 4 33 10 54 213 -17 55 13 18 56 1 10 54 9 55 57 6 7 -122 0 0 55 23 7 4 33 17 54 215 -17 54 59 10 55 47 11 53 55 36 56 52 20 -121 0 0 55 8 41 4 33 24 54 217 -18 54 44 40 55 32 50 53 40 53 56 38 11 -120 0 0 54 53 52 4 33 32 54 218 -19 54 29 46 55 18 5 53 25 48 56 23 40 -119 0 0 54 38 40 4 33 39 53 220 -19 54 14 30 55 2 58 53 10 20 56 8 45 -118 0 0 54 23 6 4 33 46 53 222 -20 53 58 51 54 47 29 52 54 29 55 53 28 -117 0 0 54 7 8 4 33 54 53 223 -20 53 42 49 54 31 36 52 38 15 55 37 48 -116 0 0 53 50 48 4 34 1 53 225 -21 53 26 24 54 15 20 52 21 37 55 21 45 -115 0 0 53 34 4 4 34 9 53 227 -22 53 9 35 53 58 40 52 4 36 55 5 19 -114 0 0 53 16 56 4 34 16 52 228 -22 52 52 23 53 41 38 51 47 12 54 48 29 -113 0 0 52 59 25 4 34 24 52 230 -23 52 34 47 53 24 11 51 29 25 54 31 16 -112 0 0 52 41 31 4 34 31 52 232 -24 52 16 48 53 6 21 51 11 13 54 13 39 -111 0 0 52 23 12 4 34 39 51 233 -24 51 58 25 52 48 8 50 52 39 53 55 38 -110 0 0 52 4 30 4 34 47 51 235 -25 51 39 39 52 29 31 50 33 40 53 37 14 -109 0 0 51 45 25 4 34 54 51 236 -26 51 20 28 52 10 30 50 14 18 53 18 25 -108 0 0 51 25 55 4 35 2 50 238 -27 51 0 55 51 51 5 49 54 33 52 59 13 -107 0 0 51 6 2 4 35 10 50 240 -27 50 40 57 51 31 16 49 34 24 52 39 37 -106 0 0 50 45 45 4 35 18 50 241 -28 50 20 36 51 11 4 49 13 51 52 19 37 -105 0 0 50 25 5 4 35 26 49 243 -29 49 59 51 50 50 28 48 52 55 51 59 13 -104 0 0 50 4 1 4 35 34 49 244 -29 49 38 43 50 29 28 48 31 35 51 38 25 -103 0 0 49 42 33 4 35 42 48 246 -30 49 17 11 50 8 4 48 9 53 51 17 14 -102 0 0 49 20 42 4 35 50 48 247 -31 48 55 16 49 46 18 47 47 47 50 55 38 -101 0 0 48 58 28 4 35 58 47 249 -32 48 32 58 49 24 7 47 25 19 50 33 39 -100 0 0 48 35 51 4 36 6 47 250 -32 48 10 17 49 1 34 47 2 28 50 11 17 - 99 0 0 48 12 51 4 36 14 46 251 -33 47 47 13 48 38 38 46 39 14 49 48 31 - 98 0 0 47 49 28 4 36 22 46 253 -34 47 23 47 48 15 19 46 15 38 49 25 23 - 97 0 0 47 25 43 4 36 30 45 254 -34 46 59 58 47 51 38 45 51 41 49 1 51 - 96 0 0 47 1 36 4 36 38 45 255 -35 46 35 48 47 27 34 45 27 22 48 37 57 - 95 0 0 46 37 8 4 36 46 44 257 -36 46 11 16 47 3 9 45 2 41 48 13 41 - 94 0 0 46 12 18 4 36 54 43 258 -37 45 46 23 46 38 22 44 37 40 47 49 3 - 93 0 0 45 47 7 4 37 2 43 259 -37 45 21 9 46 13 14 44 12 19 47 24 3 - 92 0 0 45 21 35 4 37 10 42 260 -38 44 55 35 45 47 45 43 46 37 46 58 42 - 91 0 0 44 55 44 4 37 17 42 262 -39 44 29 41 45 21 56 43 20 37 46 33 1 - 90 0 0 44 29 33 4 37 25 41 263 -40 44 3 27 44 55 48 42 54 17 46 6 59 - 89 0 0 44 3 3 4 37 33 40 264 -40 43 36 55 44 29 20 42 27 39 45 40 38 - 88 0 0 43 36 14 4 37 41 40 265 -41 43 10 4 44 2 34 42 0 43 45 13 57 - 87 0 0 43 9 8 4 37 49 39 266 -42 42 42 56 43 35 29 41 33 30 44 46 58 - 86 0 0 42 41 44 4 37 57 38 267 -43 42 15 31 43 8 8 41 6 1 44 19 41 - 85 0 0 42 14 4 4 38 4 37 268 -43 41 47 50 42 40 29 40 38 16 43 52 7 - 84 0 0 41 46 9 4 38 12 37 270 -44 41 19 53 42 12 35 40 10 16 43 24 16 - 83 0 0 41 17 58 4 38 19 36 271 -45 40 51 41 41 44 25 39 42 1 42 56 9 - 82 0 0 40 49 33 4 38 27 35 272 -45 40 23 15 41 16 1 39 13 33 42 27 47 - 81 0 0 40 20 54 4 38 34 34 273 -46 39 54 35 40 47 23 38 44 52 41 59 11 - 80 0 0 39 52 3 4 38 41 33 273 -47 39 25 44 40 18 32 38 15 59 41 30 21 - 79 0 0 39 23 0 4 38 48 33 274 -48 38 56 40 39 49 29 37 46 55 41 1 19 - 78 0 0 38 53 45 4 38 55 32 275 -48 38 27 26 39 20 15 37 17 41 40 32 5 - 77 0 0 38 24 21 4 39 2 31 276 -49 37 58 2 38 50 50 36 48 18 40 2 40 - 76 0 0 37 54 48 4 39 9 30 277 -50 37 28 30 38 21 16 36 18 47 39 33 5 - 75 0 0 37 25 7 4 39 15 29 278 -50 36 58 49 37 51 34 35 49 8 39 3 21 - 74 0 0 36 55 18 4 39 22 28 279 -51 36 29 1 37 21 45 35 19 22 38 33 29 - 73 0 0 36 25 23 4 39 28 27 280 -51 35 59 7 36 51 49 34 49 31 38 3 30 - 72 0 0 35 55 23 4 39 34 27 280 -52 35 29 8 36 21 47 34 19 35 37 33 25 - 71 0 0 35 25 18 4 39 40 26 281 -53 34 59 5 35 51 41 33 49 36 37 3 15 - 70 0 0 34 55 11 4 39 46 25 282 -53 34 28 59 35 21 32 33 19 35 36 33 1 - 69 0 0 34 25 1 4 39 52 24 283 -54 33 58 51 34 51 20 32 49 32 36 2 44 - 68 0 0 33 54 50 4 39 57 23 283 -54 33 28 42 34 21 7 32 19 28 35 32 25 - 67 0 0 33 24 39 4 40 2 22 284 -55 32 58 33 33 50 54 31 49 25 35 2 5 - 66 0 0 32 54 28 4 40 8 21 285 -55 32 28 26 33 20 41 31 19 23 34 31 46 - 65 0 0 32 24 20 4 40 12 20 285 -56 31 58 20 32 50 30 30 49 24 34 1 28 - 64 0 0 31 54 14 4 40 17 19 286 -56 31 28 17 32 20 22 30 19 29 33 31 12 - 63 0 0 31 24 13 4 40 22 18 286 -56 30 58 18 31 50 17 29 49 38 33 0 59 - 62 0 0 30 54 16 4 40 26 17 287 -57 30 28 25 31 20 17 29 19 52 32 30 51 - 61 0 0 30 24 26 4 40 30 16 288 -57 29 58 37 30 50 24 28 50 13 32 0 48 - 60 0 0 29 54 42 4 40 34 15 288 -57 29 28 57 30 20 37 28 20 41 31 30 52 - 59 0 0 29 25 6 4 40 37 14 289 -57 28 59 25 29 50 57 27 51 18 31 1 3 - 58 0 0 28 55 39 4 40 41 13 289 -58 28 30 1 29 21 27 27 22 4 30 31 22 - 57 0 0 28 26 22 4 40 44 12 290 -58 28 0 48 28 52 6 26 53 0 30 1 51 - 56 0 0 27 57 16 4 40 46 11 290 -58 27 31 45 28 22 56 26 24 7 29 32 30 - 55 0 0 27 28 21 4 40 49 10 291 -58 27 2 54 27 53 57 25 55 26 29 3 21 - 54 0 0 26 59 39 4 40 51 9 291 -58 26 34 16 27 25 11 25 26 58 28 34 23 - 53 0 0 26 31 10 4 40 54 8 292 -58 26 5 52 26 56 38 24 58 44 28 5 39 - 52 0 0 26 2 56 4 40 55 7 292 -58 25 37 41 26 28 19 24 30 44 27 37 9 - 51 0 0 25 34 56 4 40 57 6 293 -58 25 9 46 26 0 16 .. .. .. 27 8 54 - 50 0 0 25 7 13 4 40 59 5 293 -57 24 42 6 25 32 28 .. .. .. 26 40 54 - 49 0 0 24 39 46 4 41 0 4 294 -57 24 14 44 25 4 56 .. .. .. 26 13 10 - 48 0 0 24 12 36 4 41 1 3 294 -57 23 47 38 24 37 42 .. .. .. 25 45 44 - 47 0 0 23 45 45 4 41 1 2 294 -57 23 20 51 24 10 47 .. .. .. 25 18 36 - 46 0 0 23 19 12 4 41 2 1 295 -56 22 54 23 23 44 9 .. .. .. 24 51 47 Uncertainty in time = +/- 9 secs [Prediction of 2008 Mar 12.0] Data for the target star ------------------------ * name: 2UCAC 40006780 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 11 09.2531 DE: +23 02 00.457 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .042, .045 ) * V mag [mag]: 13.4 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (184) Dejopeja approx. diameter [km]: 67 approx. diameter ["]: .035 distance from Earth [AU]: 2.67300 * orbital information: orbit source: Preston date of fit: 2008 Mar 12 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 1010 number of rejected observations: 109 time covered by the observations: 1903 Sep 01 - 2008 Feb 11 1 sigma uncertainty ellipse (major, minor, PA): 0.016, 0.012, 98° remarks: * orbital elements for (184) Dejopeja : Mean anomaly = 311.48645661 deg Arg. of pericenter = 208.05898163 deg Long. of node = 332.45056491 deg Inclination = 1.14642982 deg Eccentricity = 0.07536914 Semimajor axis = 3.18265408 AU Perihelion dist = 2.94278019 AU Mag: H = 8.37, G = 0.15 Epoch of elements : MJD 54550.19100000 TDT (2008 Mar 25.191) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Mar 25 184 Dejopeja 4h 32.1m UT 13.4 7 11 9.253 23 2 0.462UCAC 40006780 0.0 13.8 67 6.8 2.673 1.291 -3.22 -143.2492 23.035 113.47 1.95 4.5350 0.10092 0.56615 5.41490 -0.97888 0.00565 -0.00070 2000 311.4533022008 325.00000208.058982332.450565 1.1464300.07536914 3.1826541 2.9427802 8.3 5.00.15 RATE 1.7358810 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.047 0.045 1 2.34 0.046 0 54537.5020080325_006780 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 12, 23:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org