IOTA/IOTA-ES occultation update for (1240) Centenaria / TYC 6354-00004-1 event on 2007 Aug 03, 08:03 UT Visible from S USA, Mexico Summary ------- On 2007 Aug 03 UT, the 59 km diameter asteroid (1240) Centenaria will occult a 10.3 mag star in the constellation Capricornus for observers along a path across S USA, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.5 mag to 12.7 mag (the magnitude of the asteroid) for at most 6.0 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: UCAC. The event at a glimpse ---------------------- * Rank: 78 * date and approx. time of event: 2007 Aug 03, 07:55 - 2007 Aug 03, 08:10 UT * magnitude of target star: 10.3 * magnitude drop [mag]: 2.5 * estimated maximum duration [s]: 6.0 * Moon: 78 % sunlit, 53° distance * Sun: 175° distance * rough path description: S USA, Mexico The occultation path -------------------- * approximate projected width [km]: 82 * 1 sigma uncertainty interval [path widths]: +/- 0.70 * 1 sigma uncertainty interval [seconds]: +/- 5.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .051 +/- .039) * 1 sigma uncertainty ellipse (major, minor, PA): ( .052", .037", 69° ) * approx speed of asteroid's shadow [km/s]: 9.8155 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6354-00004-1 by 1240 Centenaria on 2007 Aug 03 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 174 0 0 43 31 44 8 10 44 0 118 -5 43 57 9 43 6 30 .. .. .. .. .. .. 175 0 0 43 8 39 8 10 44 1 119 -6 43 34 3 42 43 27 44 9 58 .. .. .. 176 0 0 42 45 33 8 10 44 2 119 -7 43 10 55 42 20 23 43 46 48 .. .. .. 177 0 0 42 22 27 8 10 43 3 120 -7 42 47 47 41 57 19 43 23 37 .. .. .. 178 0 0 41 59 21 8 10 43 4 121 -8 42 24 39 41 34 15 43 0 26 .. .. .. 179 0 0 41 36 16 8 10 42 4 121 -9 42 1 32 41 11 12 42 37 15 .. .. .. 180 0 0 41 13 13 8 10 41 5 122 -10 41 38 27 40 48 11 42 14 7 40 13 28 -179 0 0 40 50 12 8 10 39 6 123 -11 41 15 23 40 25 12 41 51 0 39 50 32 -178 0 0 40 27 14 8 10 38 7 123 -12 40 52 22 40 2 17 41 27 55 39 27 40 -177 0 0 40 4 19 8 10 36 8 124 -12 40 29 25 39 39 24 41 4 54 39 4 51 -176 0 0 39 41 29 8 10 34 9 125 -13 40 6 32 39 16 37 40 41 58 38 42 7 -175 0 0 39 18 43 8 10 32 10 125 -14 39 43 44 38 53 54 40 19 5 38 19 28 -174 0 0 38 56 4 8 10 30 10 126 -15 39 21 1 38 31 17 39 56 19 37 56 55 -173 0 0 38 33 30 8 10 27 11 127 -16 38 58 25 38 8 47 39 33 38 37 34 28 -172 0 0 38 11 3 8 10 25 12 127 -17 38 35 55 37 46 23 39 11 4 37 12 9 -171 0 0 37 48 44 8 10 22 13 128 -18 38 13 33 37 24 7 38 48 37 36 49 57 -170 0 0 37 26 33 8 10 19 14 129 -18 37 51 19 37 1 59 38 26 18 36 27 53 -169 0 0 37 4 31 8 10 15 15 129 -19 37 29 13 36 39 59 38 4 8 36 5 58 -168 0 0 36 42 38 8 10 12 15 130 -20 37 7 17 36 18 9 37 42 7 35 44 12 -167 0 0 36 20 54 8 10 8 16 131 -21 36 45 30 35 56 30 37 20 16 35 22 37 -166 0 0 35 59 22 8 10 4 17 131 -22 36 23 54 35 35 0 36 58 35 35 1 12 -165 0 0 35 38 0 8 10 0 18 132 -22 36 2 30 35 13 42 36 37 6 34 39 58 -164 0 0 35 16 50 8 9 56 19 133 -23 35 41 16 34 52 35 36 15 47 34 18 56 -163 0 0 34 55 53 8 9 51 20 133 -24 35 20 15 34 31 41 35 54 41 33 58 6 -162 0 0 34 35 8 8 9 46 20 134 -25 34 59 27 34 10 59 35 33 48 33 37 29 -161 0 0 34 14 36 8 9 42 21 135 -26 34 38 51 33 50 31 35 13 8 33 17 5 -160 0 0 33 54 18 8 9 36 22 135 -27 34 18 30 33 30 16 34 52 41 32 56 55 -159 0 0 33 34 14 8 9 31 23 136 -27 33 58 23 33 10 16 34 32 29 32 36 59 -158 0 0 33 14 25 8 9 26 24 137 -28 33 38 30 32 50 30 34 12 31 32 17 18 -157 0 0 32 54 51 8 9 20 24 137 -29 33 18 53 32 31 0 33 52 49 31 57 53 -156 0 0 32 35 33 8 9 14 25 138 -30 32 59 31 32 11 45 33 33 22 31 38 42 -155 0 0 32 16 31 8 9 8 26 139 -30 32 40 25 31 52 46 33 14 12 31 19 48 -154 0 0 31 57 45 8 9 2 27 139 -31 32 21 36 31 34 4 32 55 18 31 1 10 -153 0 0 31 39 16 8 8 56 28 140 -32 32 3 4 31 15 38 32 36 41 30 42 50 -152 0 0 31 21 5 8 8 49 28 141 -33 31 44 49 30 57 30 32 18 21 30 24 46 -151 0 0 31 3 11 8 8 43 29 142 -33 31 26 52 30 39 40 32 0 19 30 7 0 -150 0 0 30 45 36 8 8 36 30 142 -34 31 9 13 30 22 8 31 42 36 29 49 32 -149 0 0 30 28 19 8 8 29 31 143 -35 30 51 53 30 4 54 31 25 11 29 32 23 -148 0 0 30 11 20 8 8 22 31 144 -36 30 34 52 29 47 59 31 8 4 29 15 32 -147 0 0 29 54 41 8 8 14 32 145 -36 30 18 9 29 31 23 30 51 17 28 59 1 -146 0 0 29 38 22 8 8 7 33 146 -37 30 1 46 29 15 6 30 34 50 28 42 48 -145 0 0 29 22 22 8 7 59 33 146 -38 29 45 44 28 59 9 30 18 43 28 26 56 -144 0 0 29 6 42 8 7 52 34 147 -38 29 30 1 28 43 33 30 2 55 28 11 23 -143 0 0 28 51 23 8 7 44 35 148 -39 29 14 38 28 28 16 29 47 29 27 56 11 -142 0 0 28 36 24 8 7 36 35 149 -39 28 59 37 28 13 21 29 32 23 27 41 19 -141 0 0 28 21 46 8 7 28 36 150 -40 28 44 56 27 58 46 29 17 38 27 26 48 -140 0 0 28 7 30 8 7 20 37 151 -41 28 30 37 27 44 32 29 3 15 27 12 38 -139 0 0 27 53 35 8 7 11 37 152 -41 28 16 39 27 30 40 28 49 13 26 58 50 -138 0 0 27 40 1 8 7 3 38 153 -42 28 3 3 27 17 9 28 35 33 26 45 23 -137 0 0 27 26 50 8 6 54 38 154 -42 27 49 49 27 4 0 28 22 15 26 32 17 -136 0 0 27 14 1 8 6 46 39 155 -43 27 36 57 26 51 13 28 9 19 26 19 34 -135 0 0 27 1 34 8 6 37 40 156 -43 27 24 27 26 38 49 27 56 46 26 7 13 -134 0 0 26 49 29 8 6 28 40 157 -44 27 12 20 26 26 47 27 44 35 25 55 14 -133 0 0 26 37 47 8 6 19 41 158 -44 27 0 36 26 15 7 27 32 48 25 43 38 -132 0 0 26 26 28 8 6 10 41 159 -45 26 49 15 26 3 51 27 21 23 25 32 24 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12 8 3 46 46 177 -48 24 46 33 24 1 59 25 18 5 23 31 6 -116 0 0 24 19 17 8 3 36 46 178 -48 24 41 38 23 57 6 25 13 8 23 26 14 -115 0 0 24 14 48 8 3 26 46 179 -48 24 37 7 23 52 37 25 8 37 23 21 47 -114 0 0 24 10 44 8 3 16 46 181 -48 24 33 2 23 48 33 25 4 30 23 17 45 -113 0 0 24 7 4 8 3 6 46 182 -48 24 29 22 23 44 55 25 0 49 23 14 7 -112 0 0 24 3 50 8 2 56 46 183 -48 24 26 7 23 41 41 24 57 33 23 10 54 -111 0 0 24 1 0 8 2 47 46 185 -48 24 23 17 23 38 52 24 54 42 23 8 6 -110 0 0 23 58 36 8 2 37 46 186 -48 24 20 52 23 36 28 24 52 17 23 5 43 -109 0 0 23 56 37 8 2 27 46 187 -47 24 18 52 23 34 29 24 50 17 23 3 44 -108 0 0 23 55 3 8 2 17 46 188 -47 24 17 18 23 32 56 24 48 42 23 2 11 -107 0 0 23 53 54 8 2 7 46 190 -47 24 16 9 23 31 47 24 47 33 23 1 3 -106 0 0 23 53 10 8 1 57 46 191 -47 24 15 25 23 31 3 24 46 49 23 0 19 -105 0 0 23 52 52 8 1 47 46 192 -46 24 15 7 23 30 45 24 46 30 23 0 1 -104 0 0 23 52 59 8 1 37 45 194 -46 24 15 14 23 30 52 24 46 37 23 0 8 -103 0 0 23 53 31 8 1 27 45 195 -46 24 15 46 23 31 24 24 47 10 23 0 39 -102 0 0 23 54 28 8 1 18 45 196 -46 24 16 44 23 32 21 24 48 8 23 1 36 -101 0 0 23 55 51 8 1 8 45 197 -45 24 18 7 23 33 43 24 49 31 23 2 58 -100 0 0 23 57 39 8 0 58 44 198 -45 24 19 55 23 35 31 24 51 20 23 4 45 - 99 0 0 23 59 52 8 0 49 44 200 -44 24 22 9 23 37 44 24 53 35 23 6 57 - 98 0 0 24 2 31 8 0 39 44 201 -44 24 24 48 23 40 21 24 56 15 23 9 34 - 97 0 0 24 5 34 8 0 30 43 202 -43 24 27 52 23 43 24 24 59 20 23 12 36 - 96 0 0 24 9 3 8 0 20 43 203 -43 24 31 22 23 46 52 25 2 51 23 16 3 - 95 0 0 24 12 57 8 0 11 42 204 -42 24 35 17 23 50 45 25 6 47 23 19 55 - 94 0 0 24 17 16 8 0 2 42 205 -42 24 39 37 23 55 4 25 11 9 23 24 12 - 93 0 0 24 22 0 7 59 52 42 206 -41 24 44 22 23 59 47 25 15 55 23 28 53 - 92 0 0 24 27 10 7 59 43 41 207 -41 24 49 33 24 4 55 25 21 7 23 34 0 - 91 0 0 24 32 44 7 59 34 41 208 -40 24 55 8 24 10 28 25 26 45 23 39 31 - 90 0 0 24 38 43 7 59 25 40 209 -40 25 1 9 24 16 26 25 32 47 23 45 27 - 89 0 0 24 45 7 7 59 16 40 210 -39 25 7 34 24 22 49 25 39 15 23 51 48 - 88 0 0 24 51 56 7 59 8 39 211 -38 25 14 25 24 29 36 25 46 7 23 58 34 - 87 0 0 24 59 10 7 58 59 38 212 -38 25 21 40 24 36 48 25 53 25 24 5 44 - 86 0 0 25 6 48 7 58 50 38 213 -37 25 29 20 24 44 25 26 1 7 24 13 18 - 85 0 0 25 14 51 7 58 42 37 214 -36 25 37 24 24 52 26 26 9 14 24 21 17 - 84 0 0 25 23 18 7 58 33 37 215 -36 25 45 53 25 0 51 26 17 46 24 29 40 - 83 0 0 25 32 10 7 58 25 36 216 -35 25 54 47 25 9 41 26 26 42 24 38 27 - 82 0 0 25 41 26 7 58 17 35 217 -34 26 4 5 25 18 55 26 36 3 24 47 38 - 81 0 0 25 51 6 7 58 9 35 218 -34 26 13 47 25 28 33 26 45 48 24 57 14 - 80 0 0 26 1 10 7 58 1 34 218 -33 26 23 54 25 38 35 26 55 58 25 7 13 - 79 0 0 26 11 38 7 57 53 33 219 -32 26 34 24 25 49 1 27 6 31 25 17 35 - 78 0 0 26 22 30 7 57 46 33 220 -32 26 45 18 25 59 50 27 17 29 25 28 22 - 77 0 0 26 33 45 7 57 38 32 221 -31 26 56 36 26 11 3 27 28 50 25 39 32 - 76 0 0 26 45 24 7 57 31 31 222 -30 27 8 17 26 22 40 27 40 35 25 51 5 - 75 0 0 26 57 26 7 57 24 31 222 -29 27 20 22 26 34 40 27 52 43 26 3 1 - 74 0 0 27 9 51 7 57 17 30 223 -28 27 32 50 26 47 2 28 5 15 26 15 20 - 73 0 0 27 22 39 7 57 10 29 224 -28 27 45 40 26 59 48 28 18 9 26 28 2 - 72 0 0 27 35 50 7 57 3 28 224 -27 27 58 54 27 12 56 28 31 27 26 41 7 - 71 0 0 27 49 24 7 56 57 28 225 -26 28 12 30 27 26 27 28 45 7 26 54 33 - 70 0 0 28 3 19 7 56 50 27 226 -25 28 26 29 27 40 19 28 59 10 27 8 22 - 69 0 0 28 17 37 7 56 44 26 227 -24 28 40 49 27 54 34 29 13 35 27 22 33 - 68 0 0 28 32 17 7 56 38 25 227 -24 28 55 32 28 9 11 29 28 22 27 37 6 - 67 0 0 28 47 18 7 56 32 24 228 -23 29 10 36 28 24 9 29 43 30 27 52 0 - 66 0 0 29 2 40 7 56 26 24 228 -22 29 26 2 28 39 28 29 59 0 28 7 15 - 65 0 0 29 18 24 7 56 21 23 229 -21 29 41 49 28 55 9 30 14 52 28 22 51 - 64 0 0 29 34 28 7 56 16 22 230 -20 29 57 56 29 11 10 30 31 4 28 38 48 - 63 0 0 29 50 53 7 56 10 21 230 -19 30 14 24 29 27 31 30 47 36 28 55 5 - 62 0 0 30 7 38 7 56 6 20 231 -19 30 31 12 29 44 13 31 4 29 29 11 43 - 61 0 0 30 24 42 7 56 1 19 232 -18 30 48 20 30 1 14 31 21 42 29 28 39 - 60 0 0 30 42 6 7 55 56 19 232 -17 31 5 48 30 18 35 31 39 14 29 45 56 - 59 0 0 30 59 50 7 55 52 18 233 -16 31 23 34 30 36 15 31 57 6 30 3 31 - 58 0 0 31 17 52 7 55 48 17 233 -15 31 41 40 30 54 14 32 15 16 30 21 25 - 57 0 0 31 36 12 7 55 44 16 234 -14 32 0 3 31 12 30 32 33 45 30 39 37 - 56 0 0 31 54 50 7 55 40 15 235 -13 32 18 45 31 31 5 32 52 32 30 58 7 - 55 0 0 32 13 46 7 55 36 14 235 -12 32 37 44 31 49 58 33 11 36 31 16 55 - 54 0 0 32 32 59 7 55 33 13 236 -12 32 57 1 32 9 7 33 30 57 31 35 59 - 53 0 0 32 52 28 7 55 30 13 236 -11 33 16 34 32 28 33 33 50 35 31 55 21 - 52 0 0 33 12 14 7 55 27 12 237 -10 33 36 23 32 48 15 34 10 30 32 14 58 - 51 0 0 33 32 15 7 55 24 11 237 -9 33 56 28 33 8 13 34 30 40 32 34 51 - 50 0 0 33 52 32 7 55 22 10 238 -8 34 16 48 33 28 26 34 51 5 32 55 0 - 49 0 0 34 13 3 7 55 19 9 239 -7 34 37 23 33 48 54 35 11 45 33 15 23 - 48 0 0 34 33 49 7 55 17 8 239 -6 34 58 12 34 9 37 35 32 39 33 36 1 - 47 0 0 34 54 48 7 55 15 7 240 -5 35 19 15 34 30 32 35 53 47 33 56 52 - 46 0 0 35 16 1 7 55 14 6 240 -4 35 40 31 34 51 41 36 15 8 34 17 56 - 45 0 0 35 37 26 7 55 12 6 241 -4 36 1 59 35 13 3 36 36 42 34 39 13 - 44 0 0 35 59 3 7 55 11 5 241 -3 36 23 40 35 34 37 36 58 27 .. .. .. - 43 0 0 36 20 51 7 55 10 4 242 -2 36 45 32 35 56 22 37 20 24 .. .. .. - 42 0 0 36 42 51 7 55 9 3 243 -1 37 7 34 36 18 18 37 42 31 .. .. .. - 41 0 0 37 5 0 7 55 9 2 243 0 37 29 47 36 40 24 38 4 49 .. .. .. - 40 0 0 37 27 19 7 55 8 1 244 1 37 52 9 37 2 40 38 27 16 .. .. .. - 39 0 0 37 49 47 7 55 8 0 244 2 38 14 41 37 25 5 .. .. .. .. .. .. Data for the target star ------------------------ * name: TYC 6354-00004-1 * constellation : Capricornus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 21 10 57.7762 DE: -19 48 50.910 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .025 ) * V mag [mag]: 10.3 * B mag [mag]: 10.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1240) Centenaria approx. diameter [km]: 59 approx. diameter ["]: .057 distance from Earth [AU]: 1.42900 * orbital information: orbit source: Preston date of fit: 2007 Jul 28 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 684 number of rejected observations: 70 time covered by the observations: 1929 Jul 05 - 2007 Jul 01 1 sigma uncertainty ellipse (major, minor, PA): 0.047, 0.028, 64° remarks: * orbital elements for (1240) Centenaria : Mean anomaly = 335.69289375 deg Arg. of pericenter = 22.85377958 deg Long. of node = 323.87787599 deg Inclination = 10.15137149 deg Eccentricity = 0.17046521 Semimajor axis = 2.86919506 AU Perihelion dist = 2.38009713 AU Mag: H = 9.94, G = 0.15 Epoch of elements : MJD 54315.33600000 TDT (2007 Aug 03.336) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Aug 03 1240 Centenaria 8h 2.9m UT 10.3 21 10 57.776-19 48 50.91TYC 6354-00004-1 10.9 12.7 59 6.0 1.429 -2.412 1.90 245.479 -19.813 60.83 17.57 8.0490 .03844 .69026 -5.53159 0.30771 -0.00046 0.00019 2000 334.6107632007 729.00000 22.853780323.877876 10.1513710.170465212.869195062.380097139.7 5 0.15 RATE 2.0279810 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.052 0.037 69.4 1.700 0.040 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Jul 29, 02:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org