IOTA/IOTA-ES occultation update for (1048) Feodosia / TYC 4688-00917-1 event on 2009 Sep 10, 11:16 UT Visible from Summary ------- On 2009 Sep 10 UT, the 60 km diameter asteroid (1048) Feodosia will occult a 10.0 mag star in the constellation Cetus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.7 mag to 14.6 mag (the magnitude of the asteroid) for at most 6.5 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: 82 * date and approx. time of event: 2009 Sep 10, 11:09 - 2009 Sep 10, 11:26 UT * magnitude of target star: 10.0 * magnitude drop [mag]: 4.7 * estimated maximum duration [s]: 6.5 * Moon: 68 % sunlit, 37° distance * Sun: 141° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 78 * 1 sigma uncertainty interval [path widths]: +/- 0.65 * 1 sigma uncertainty interval [seconds]: +/- 5.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .031 +/- .026) * 1 sigma uncertainty ellipse (major, minor, PA): ( .032", .025", 67° ) * approx speed of asteroid's shadow [km/s]: 9.2052 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4688-00917-1 by 1048 Feodosia on 2009 Sep 10 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 139 0 0 18 19 44 11 26 27 1 94 -37 18 41 5 17 58 29 19 9 1 .. .. .. 140 0 0 18 16 22 11 26 27 2 95 -38 18 37 43 17 55 9 19 5 37 .. .. .. 141 0 0 18 13 30 11 26 26 3 95 -39 18 34 49 17 52 17 19 2 43 .. .. .. 142 0 0 18 11 6 11 26 25 4 95 -40 18 32 25 17 49 54 19 0 17 17 22 30 143 0 0 18 9 12 11 26 24 5 95 -40 18 30 30 17 48 0 18 58 21 17 20 37 144 0 0 18 7 46 11 26 23 6 96 -41 18 29 4 17 46 35 18 56 54 17 19 13 145 0 0 18 6 49 11 26 21 6 96 -42 18 28 6 17 45 39 18 55 56 17 18 17 146 0 0 18 6 22 11 26 20 7 96 -43 18 27 38 17 45 12 18 55 27 17 17 50 147 0 0 18 6 22 11 26 18 8 97 -44 18 27 39 17 45 13 18 55 28 17 17 52 148 0 0 18 6 52 11 26 15 9 97 -45 18 28 8 17 45 43 18 55 56 17 18 22 149 0 0 18 7 50 11 26 13 10 97 -46 18 29 6 17 46 41 18 56 54 17 19 20 150 0 0 18 9 16 11 26 10 11 98 -46 18 30 32 17 48 7 18 58 21 17 20 47 151 0 0 18 11 11 11 26 7 12 98 -47 18 32 27 17 50 2 19 0 15 17 22 42 152 0 0 18 13 34 11 26 4 13 98 -48 18 34 50 17 52 25 19 2 39 17 25 4 153 0 0 18 16 25 11 26 0 14 99 -49 18 37 42 17 55 16 19 5 30 17 27 55 154 0 0 18 19 45 11 25 57 15 99 -50 18 41 1 17 58 35 19 8 50 17 31 13 155 0 0 18 23 32 11 25 53 16 100 -50 18 44 48 18 2 21 19 12 38 17 34 59 156 0 0 18 27 46 11 25 49 17 100 -51 18 49 4 18 6 36 19 16 54 17 39 13 157 0 0 18 32 29 11 25 44 18 100 -52 18 53 47 18 11 17 19 21 38 17 43 54 158 0 0 18 37 39 11 25 40 18 101 -52 18 58 57 18 16 27 19 26 49 17 49 3 159 0 0 18 43 16 11 25 35 19 101 -53 19 4 35 18 22 3 19 32 28 17 54 38 160 0 0 18 49 20 11 25 30 20 101 -54 19 10 40 18 28 7 19 38 35 18 0 41 161 0 0 18 55 52 11 25 25 21 102 -55 19 17 13 18 34 37 19 45 8 18 7 10 162 0 0 19 2 50 11 25 20 22 102 -55 19 24 12 18 41 35 19 52 9 18 14 6 163 0 0 19 10 15 11 25 14 23 103 -56 19 31 38 18 48 58 19 59 37 18 21 29 164 0 0 19 18 7 11 25 8 24 103 -56 19 39 31 18 56 49 20 7 31 18 29 18 165 0 0 19 26 24 11 25 2 25 104 -57 19 47 50 19 5 5 20 15 52 18 37 33 166 0 0 19 35 8 11 24 56 25 104 -57 19 56 35 19 13 48 20 24 39 18 46 14 167 0 0 19 44 18 11 24 50 26 105 -58 20 5 47 19 22 57 20 33 52 18 55 20 168 0 0 19 53 54 11 24 43 27 105 -58 20 15 24 19 32 31 20 43 31 19 4 53 169 0 0 20 3 56 11 24 36 28 106 -59 20 25 27 19 42 31 20 53 36 19 14 51 170 0 0 20 14 22 11 24 29 29 106 -59 20 35 55 19 52 56 21 4 7 19 25 14 171 0 0 20 25 14 11 24 22 30 107 -60 20 46 49 20 3 46 21 15 3 19 36 2 172 0 0 20 36 31 11 24 15 30 108 -60 20 58 8 20 15 1 21 26 23 19 47 15 173 0 0 20 48 12 11 24 7 31 108 -60 21 9 51 20 26 41 21 38 9 19 58 52 174 0 0 21 0 18 11 24 0 32 109 -61 21 21 59 20 38 45 21 50 20 20 10 54 175 0 0 21 12 49 11 23 52 33 109 -61 21 34 31 20 51 13 22 2 55 20 23 19 176 0 0 21 25 43 11 23 44 34 110 -61 21 47 27 21 4 5 22 15 54 20 36 9 177 0 0 21 39 1 11 23 36 34 111 -61 22 0 47 21 17 21 22 29 16 20 49 22 178 0 0 21 52 42 11 23 27 35 112 -62 22 14 31 21 31 0 22 43 3 21 2 59 179 0 0 22 6 47 11 23 19 36 112 -62 22 28 37 21 45 3 22 57 13 21 16 58 180 0 0 22 21 14 11 23 10 37 113 -62 22 43 7 21 59 28 23 11 45 21 31 20 -179 0 0 22 36 4 11 23 2 37 114 -62 22 58 0 22 14 16 23 26 41 21 46 5 -178 0 0 22 51 16 11 22 53 38 115 -62 23 13 14 22 29 25 23 41 59 22 1 12 -177 0 0 23 6 51 11 22 44 39 116 -62 23 28 51 22 44 57 23 57 39 22 16 41 -176 0 0 23 22 47 11 22 34 39 116 -62 23 44 50 23 0 51 24 13 41 22 32 31 -175 0 0 23 39 4 11 22 25 40 117 -61 24 1 10 23 17 6 24 30 4 22 48 43 -174 0 0 23 55 42 11 22 16 41 118 -61 24 17 51 23 33 41 24 46 49 23 5 15 -173 0 0 24 12 41 11 22 6 41 119 -61 24 34 52 23 50 38 25 3 54 23 22 8 -172 0 0 24 30 1 11 21 57 42 120 -61 24 52 14 24 7 55 25 21 20 23 39 22 -171 0 0 24 47 40 11 21 47 43 121 -61 25 9 56 24 25 31 25 39 5 23 56 55 -170 0 0 25 5 39 11 21 37 43 122 -60 25 27 58 24 43 28 25 57 11 24 14 47 -169 0 0 25 23 57 11 21 27 44 123 -60 25 46 19 25 1 43 26 15 36 24 32 59 -168 0 0 25 42 34 11 21 17 44 125 -59 26 4 59 25 20 17 26 34 19 24 51 30 -167 0 0 26 1 30 11 21 7 45 126 -59 26 23 57 25 39 10 26 53 21 25 10 19 -166 0 0 26 20 43 11 20 57 45 127 -59 26 43 14 25 58 20 27 12 42 25 29 26 -165 0 0 26 40 14 11 20 46 46 128 -58 27 2 48 26 17 48 27 32 20 25 48 50 -164 0 0 27 0 2 11 20 36 46 129 -58 27 22 39 26 37 34 27 52 15 26 8 32 -163 0 0 27 20 7 11 20 26 47 131 -57 27 42 47 26 57 36 28 12 27 26 28 30 -162 0 0 27 40 29 11 20 15 47 132 -57 28 3 11 27 17 54 28 32 55 26 48 45 -161 0 0 28 1 6 11 20 4 47 133 -56 28 23 51 27 38 28 28 53 39 27 9 15 -160 0 0 28 21 58 11 19 54 48 135 -55 28 44 47 27 59 18 29 14 39 27 30 1 -159 0 0 28 43 5 11 19 43 48 136 -55 29 5 57 28 20 22 29 35 53 27 51 1 -158 0 0 29 4 27 11 19 32 48 138 -54 29 27 22 28 41 41 29 57 22 28 12 16 -157 0 0 29 26 3 11 19 22 49 139 -53 29 49 1 29 3 13 30 19 4 28 33 45 -156 0 0 29 47 52 11 19 11 49 140 -53 30 10 53 29 24 59 30 41 0 28 55 27 -155 0 0 30 9 53 11 19 0 49 142 -52 30 32 57 29 46 58 31 3 9 29 17 22 -154 0 0 30 32 8 11 18 49 49 143 -51 30 55 15 30 9 9 31 25 30 29 39 29 -153 0 0 30 54 34 11 18 39 50 145 -51 31 17 43 30 31 32 31 48 3 30 1 49 -152 0 0 31 17 11 11 18 28 50 146 -50 31 40 24 30 54 6 32 10 48 30 24 19 -151 0 0 31 39 59 11 18 17 50 148 -49 32 3 14 31 16 51 32 33 42 30 47 1 -150 0 0 32 2 57 11 18 6 50 150 -48 32 26 15 31 39 47 32 56 47 31 9 52 -149 0 0 32 26 4 11 17 55 50 151 -48 32 49 26 32 2 51 33 20 2 31 32 53 -148 0 0 32 49 21 11 17 45 50 153 -47 33 12 45 32 26 5 33 43 25 31 56 3 -147 0 0 33 12 46 11 17 34 50 154 -46 33 36 13 32 49 27 34 6 57 32 19 22 -146 0 0 33 36 19 11 17 23 50 156 -45 33 59 49 33 12 57 34 30 36 32 42 49 -145 0 0 33 59 59 11 17 12 50 158 -45 34 23 32 33 36 35 34 54 22 33 6 23 -144 0 0 34 23 45 11 17 2 50 159 -44 34 47 21 34 0 19 35 18 15 33 30 3 -143 0 0 34 47 38 11 16 51 50 161 -43 35 11 16 34 24 9 35 42 14 33 53 50 -142 0 0 35 11 36 11 16 40 50 162 -42 35 35 17 34 48 4 36 6 18 34 17 42 -141 0 0 35 35 39 11 16 30 50 164 -41 35 59 22 35 12 5 36 30 27 34 41 40 -140 0 0 35 59 46 11 16 19 49 165 -41 36 23 32 35 36 9 36 54 40 35 5 41 -139 0 0 36 23 57 11 16 9 49 167 -40 36 47 45 36 0 18 37 18 56 35 29 47 -138 0 0 36 48 10 11 15 59 49 168 -39 37 12 1 36 24 29 37 43 15 35 53 55 -137 0 0 37 12 26 11 15 48 49 170 -38 37 36 19 36 48 43 38 7 36 36 18 6 -136 0 0 37 36 43 11 15 38 48 171 -37 38 0 38 37 12 58 38 31 58 36 42 18 -135 0 0 38 1 2 11 15 28 48 173 -37 38 24 59 37 37 14 38 56 21 37 6 32 -134 0 0 38 25 21 11 15 18 48 174 -36 38 49 20 38 1 31 39 20 45 37 30 47 -133 0 0 38 49 39 11 15 8 47 176 -35 39 13 40 38 25 48 39 45 8 37 55 1 -132 0 0 39 13 57 11 14 58 47 177 -34 39 38 0 38 50 4 40 9 30 38 19 15 -131 0 0 39 38 13 11 14 49 47 179 -33 40 2 18 39 14 19 40 33 50 38 43 28 -130 0 0 40 2 28 11 14 39 46 180 -32 40 26 34 39 38 32 40 58 8 39 7 39 -129 0 0 40 26 39 11 14 29 46 182 -32 40 50 46 40 2 42 41 22 23 39 31 47 -128 0 0 40 50 47 11 14 20 45 183 -31 41 14 56 40 26 49 41 46 34 39 55 52 -127 0 0 41 14 52 11 14 11 45 184 -30 41 39 2 40 50 52 42 10 41 40 19 54 -126 0 0 41 38 52 11 14 2 45 186 -29 42 3 2 41 14 50 42 34 44 40 43 51 -125 0 0 42 2 46 11 13 53 44 187 -28 42 26 58 41 38 44 42 58 41 41 7 43 -124 0 0 42 26 35 11 13 44 44 188 -28 42 50 48 42 2 32 43 22 32 41 31 30 -123 0 0 42 50 18 11 13 35 43 189 -27 43 14 31 42 26 14 43 46 16 41 55 11 -122 0 0 43 13 54 11 13 26 43 191 -26 43 38 8 42 49 49 44 9 53 42 18 46 -121 0 0 43 37 22 11 13 18 42 192 -25 44 1 37 43 13 17 44 33 23 42 42 13 -120 0 0 44 0 43 11 13 9 42 193 -24 44 24 58 43 36 38 44 56 45 43 5 33 -119 0 0 44 23 55 11 13 1 41 194 -24 44 48 10 43 59 49 45 19 57 43 28 45 -118 0 0 44 46 58 11 12 53 40 195 -23 45 11 13 44 22 53 45 43 1 43 51 47 -117 0 0 45 9 52 11 12 45 40 197 -22 45 34 7 44 45 46 46 5 54 44 14 41 -116 0 0 45 32 35 11 12 37 39 198 -21 45 56 51 45 8 30 46 28 38 44 37 25 -115 0 0 45 55 9 11 12 30 39 199 -20 46 19 24 45 31 4 46 51 10 44 59 59 -114 0 0 46 17 31 11 12 22 38 200 -20 46 41 46 45 53 26 47 13 31 45 22 22 -113 0 0 46 39 42 11 12 15 38 201 -19 47 3 56 46 15 38 47 35 41 45 44 34 -112 0 0 47 1 41 11 12 7 37 202 -18 47 25 54 46 37 37 47 57 39 46 6 35 -111 0 0 47 23 28 11 12 0 36 203 -17 47 47 40 46 59 25 48 19 24 46 28 24 -110 0 0 47 45 2 11 11 53 36 204 -17 48 9 14 47 21 0 48 40 56 46 50 0 -109 0 0 48 6 23 11 11 46 35 205 -16 48 30 34 47 42 23 49 2 15 47 11 24 -108 0 0 48 27 31 11 11 40 35 206 -15 48 51 41 48 3 32 49 23 20 47 32 34 -107 0 0 48 48 25 11 11 33 34 207 -14 49 12 34 48 24 27 49 44 11 47 53 31 -106 0 0 49 9 6 11 11 27 33 208 -14 49 33 12 48 45 9 50 4 48 48 14 14 -105 0 0 49 29 31 11 11 21 33 209 -13 49 53 36 49 5 36 50 25 10 48 34 43 -104 0 0 49 49 42 11 11 15 32 210 -12 50 13 46 49 25 48 50 45 17 48 54 58 -103 0 0 50 9 38 11 11 9 32 211 -12 50 33 40 49 45 46 51 5 9 49 14 58 -102 0 0 50 29 19 11 11 3 31 212 -11 50 53 19 50 5 28 51 24 45 49 34 43 -101 0 0 50 48 44 11 10 57 30 213 -10 51 12 42 50 24 56 51 44 6 49 54 12 -100 0 0 51 7 54 11 10 52 30 214 -10 51 31 49 50 44 7 52 3 10 50 13 26 - 99 0 0 51 26 47 11 10 47 29 215 -9 51 50 41 51 3 3 52 21 59 50 32 25 - 98 0 0 51 45 24 11 10 41 29 216 -8 52 9 16 51 21 42 52 40 31 50 51 7 - 97 0 0 52 3 45 11 10 36 28 217 -7 52 27 34 51 40 6 52 58 46 51 9 33 - 96 0 0 52 21 50 11 10 31 27 218 -7 52 45 36 51 58 12 53 16 45 51 27 43 - 95 0 0 52 39 37 11 10 27 27 219 -6 53 3 21 52 16 3 53 34 27 51 45 36 - 94 0 0 52 57 8 11 10 22 26 220 -6 53 20 50 52 33 36 53 51 51 52 3 13 - 93 0 0 53 14 22 11 10 17 26 221 -5 53 38 1 52 50 53 54 8 59 52 20 33 - 92 0 0 53 31 19 11 10 13 25 222 -4 53 54 55 53 7 52 54 25 49 52 37 36 - 91 0 0 53 47 59 11 10 9 24 222 -4 54 11 32 53 24 34 54 42 22 52 54 22 - 90 0 0 54 4 21 11 10 5 24 223 -3 54 27 51 53 41 0 54 58 38 53 10 51 - 89 0 0 54 20 26 11 10 1 23 224 -2 54 43 53 53 57 8 55 14 36 53 27 2 - 88 0 0 54 36 14 11 9 57 23 225 -2 54 59 38 54 12 58 55 30 17 53 42 57 - 87 0 0 54 51 44 11 9 53 22 226 -1 55 15 5 54 28 31 55 45 40 53 58 34 - 86 0 0 55 6 57 11 9 49 21 227 -1 55 30 15 54 43 47 56 0 46 54 13 53 Uncertainty in time = +/- 6 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 4688-00917-1 * constellation : Cetus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 52 09.2737 DE: -03 50 36.380 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .022, .020 ) * V mag [mag]: 10.0 * B mag [mag]: 10.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1048) Feodosia approx. diameter [km]: 60 approx. diameter ["]: .038 distance from Earth [AU]: 2.18200 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 804 number of rejected observations: 53 time covered by the observations: 1924 Nov 29 - 2008 Feb 09 1 sigma uncertainty ellipse (major, minor, PA): 0.025, 0.015, 51° remarks: * orbital elements for (1048) Feodosia : Mean anomaly = 118.75587879 deg Arg. of pericenter = 184.07861652 deg Long. of node = 52.83008857 deg Inclination = 15.80248893 deg Eccentricity = 0.18098901 Semimajor axis = 2.73161986 AU Perihelion dist = 2.23722667 AU Mag: H = 9.63, G = 0.15 Epoch of elements : MJD 55084.47000000 TDT (2009 Sep 10.470) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Sep 10 1048 Feodosia 11h 17.6m UT 10.0 1 52 9.274- 3 50 36.38TYC 4688-00917-1 10.5 14.6 60 6.5 2.182 -1.303 -7.69 -130.9833 -3.841 9.84 4.79 11.2930 -0.23441 0.59606 -4.83286 -1.90749 -0.00363 -0.00020 2000 117.7800332009 9 6.00000184.078617 52.830089 15.8024890.18098901 2.7316199 2.2372267 9.8 5.00.15 RATE 2.1831000 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.032 0.025 67 1.65 0.025 0 54545.5020090910_0917-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 13:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org