IOTA/IOTA-ES occultation update for (213) Lilaea / TYC 6304-01595-1 event on 2009 Jul 10, 22:55 UT Visible from Russia, Europe Summary ------- On 2009 Jul 10 UT, the 83 km diameter asteroid (213) Lilaea will occult a 8.2 mag star in the constellation Sagittarius for observers along a path across Russia, Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.1 mag to 11.3 mag (the magnitude of the asteroid) for at most 9.2 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: 96 * date and approx. time of event: 2009 Jul 10, 22:48 - 2009 Jul 10, 23:03 UT * magnitude of target star: 8.2 * magnitude drop [mag]: 3.1 * estimated maximum duration [s]: 9.2 * Moon: 89 % sunlit, 39° distance * Sun: 177° distance * rough path description: Russia, Europe The occultation path -------------------- * approximate projected width [km]: 127 * 1 sigma uncertainty interval [path widths]: +/- 0.43 * 1 sigma uncertainty interval [seconds]: +/- 4.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .044 +/- .035) * 1 sigma uncertainty ellipse (major, minor, PA): ( .044", .035", 89° ) * approx speed of asteroid's shadow [km/s]: 8.9767 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6304-01595-1 by 213 Lilaea on 2009 Jul 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 ' " Longitude Longitude Longitude Longitude 57 26 47 62 0 0 22 48 6 3 216 -1 55 49 45 59 3 48 54 26 16 60 27 18 55 41 42 61 0 0 22 48 7 4 215 -2 54 7 37 57 15 42 52 46 36 58 36 32 53 59 38 60 0 0 22 48 10 6 213 -3 52 28 12 55 30 55 51 9 25 56 49 22 52 20 9 59 0 0 22 48 12 7 212 -5 50 51 8 53 48 59 49 34 22 55 5 16 50 42 54 58 0 0 22 48 16 8 210 -6 49 16 3 52 9 30 48 1 7 53 23 50 49 7 33 57 0 0 22 48 19 10 209 -7 47 42 40 50 32 8 46 29 23 51 44 41 47 33 47 56 0 0 22 48 24 11 208 -8 46 10 41 48 56 33 44 58 55 50 7 30 46 1 22 55 0 0 22 48 29 12 206 -10 44 39 53 47 22 29 43 29 28 48 31 58 44 30 3 54 0 0 22 48 34 13 205 -11 43 10 2 45 49 40 42 0 51 46 57 51 42 59 38 53 0 0 22 48 41 15 204 -12 41 40 55 44 17 54 40 32 50 45 24 54 41 29 53 52 0 0 22 48 47 16 203 -13 40 12 21 42 46 57 39 5 16 43 52 52 40 0 39 51 0 0 22 48 55 17 201 -15 38 44 10 41 16 37 37 37 57 42 21 36 38 31 44 50 0 0 22 49 3 19 200 -16 37 16 11 39 46 44 36 10 44 40 50 52 37 2 57 49 0 0 22 49 11 20 199 -17 35 48 13 38 17 8 34 43 28 39 20 30 35 34 11 48 0 0 22 49 20 21 197 -18 34 20 9 36 47 37 33 15 58 37 50 20 34 5 14 47 0 0 22 49 30 22 196 -20 32 51 48 35 18 3 31 48 6 36 20 12 32 35 58 46 0 0 22 49 41 24 195 -21 31 23 1 33 48 16 30 19 43 34 49 56 31 6 14 45 0 0 22 49 52 25 193 -22 29 53 39 32 18 6 28 50 38 33 19 23 29 35 51 44 0 0 22 50 4 26 192 -23 28 23 33 30 47 24 27 20 44 31 48 24 28 4 40 43 0 0 22 50 16 27 191 -24 26 52 32 29 16 2 25 49 50 30 16 49 26 32 32 42 0 0 22 50 29 28 189 -26 25 20 27 27 43 48 24 17 46 28 44 27 24 59 16 41 0 0 22 50 43 29 188 -27 23 47 8 26 10 33 22 44 20 27 11 11 23 24 42 40 0 0 22 50 57 31 186 -28 22 12 22 24 36 5 21 9 23 25 36 48 21 48 36 39 0 0 22 51 13 32 184 -29 20 35 58 23 0 15 19 32 39 24 1 7 20 10 48 38 0 0 22 51 29 33 183 -30 18 57 43 21 22 49 17 53 57 22 23 58 18 31 2 37 0 0 22 51 46 34 181 -31 17 17 21 19 43 35 16 13 1 20 45 7 16 49 4 36 0 0 22 52 3 35 179 -32 15 34 37 18 2 17 14 29 32 19 4 21 15 4 36 35 0 0 22 52 22 36 177 -33 13 49 12 16 18 40 12 43 12 17 21 23 13 17 18 34 0 0 22 52 41 37 175 -34 12 0 44 14 32 25 10 53 38 15 35 56 11 26 48 33 0 0 22 53 2 37 173 -35 10 8 49 12 43 11 9 0 22 13 47 41 9 32 39 32 0 0 22 53 23 38 171 -35 8 12 58 10 50 34 7 2 53 11 56 16 7 34 19 31 0 0 22 53 45 39 168 -36 6 12 35 8 54 4 5 0 33 10 1 12 5 31 10 30 0 0 22 54 9 40 166 -37 4 6 57 6 53 8 2 52 33 8 1 59 Latitude Latitude Latitude Latitude 4 0 0 29 17 14 22 54 27 40 164 -37 29 56 46 28 38 18 30 31 16 28 5 16 3 0 0 28 49 51 22 54 38 40 163 -37 29 29 8 28 11 9 30 3 25 27 38 19 2 0 0 28 23 6 22 54 50 40 161 -37 29 2 9 27 44 38 29 36 12 27 11 59 1 0 0 27 56 58 22 55 1 40 160 -38 28 35 47 27 18 44 29 9 38 26 46 16 0 0 0 27 31 29 22 55 13 40 159 -38 28 10 4 26 53 27 28 43 43 26 21 10 - 1 0 0 27 6 38 22 55 25 41 158 -38 27 45 0 26 28 48 28 18 27 25 56 41 - 2 0 0 26 42 25 22 55 36 41 156 -38 27 20 34 26 4 48 27 53 50 25 32 51 - 3 0 0 26 18 51 22 55 48 41 155 -38 26 56 48 25 41 25 27 29 53 25 9 38 - 4 0 0 25 55 56 22 56 0 41 154 -38 26 33 41 25 18 42 27 6 36 24 47 4 - 5 0 0 25 33 40 22 56 11 40 153 -38 26 11 14 24 56 37 26 43 58 24 25 9 - 6 0 0 25 12 4 22 56 23 40 151 -38 25 49 27 24 35 11 26 22 1 24 3 52 - 7 0 0 24 51 7 22 56 34 40 150 -38 25 28 20 24 14 25 26 0 44 23 43 14 - 8 0 0 24 30 50 22 56 46 40 149 -37 25 7 52 23 54 18 25 40 8 23 23 15 - 9 0 0 24 11 13 22 56 57 40 148 -37 24 48 6 23 34 50 25 20 12 23 3 55 - 10 0 0 23 52 16 22 57 8 40 147 -37 24 28 59 23 16 2 25 0 57 22 45 14 - 11 0 0 23 34 0 22 57 20 40 146 -37 24 10 33 22 57 54 24 42 24 22 27 13 - 12 0 0 23 16 23 22 57 31 39 145 -37 23 52 48 22 40 26 24 24 31 22 9 52 - 13 0 0 22 59 27 22 57 42 39 144 -36 23 35 44 22 23 38 24 7 19 21 53 11 - 14 0 0 22 43 12 22 57 53 39 142 -36 23 19 21 22 7 30 23 50 49 21 37 9 - 15 0 0 22 27 37 22 58 4 38 141 -36 23 3 39 21 52 3 23 35 0 21 21 48 - 16 0 0 22 12 43 22 58 15 38 140 -35 22 48 38 21 37 16 23 19 53 21 7 6 - 17 0 0 21 58 30 22 58 25 38 139 -35 22 34 18 21 23 9 23 5 27 20 53 5 - 18 0 0 21 44 58 22 58 36 37 138 -35 22 20 39 21 9 43 22 51 43 20 39 44 - 19 0 0 21 32 7 22 58 46 37 137 -34 22 7 42 20 56 58 22 38 41 20 27 4 - 20 0 0 21 19 57 22 58 57 36 137 -34 21 55 27 20 44 53 22 26 20 20 15 4 - 21 0 0 21 8 28 22 59 7 36 136 -33 21 43 53 20 33 30 22 14 42 20 3 44 - 22 0 0 20 57 41 22 59 17 35 135 -33 21 33 1 20 22 47 22 3 45 19 53 5 - 23 0 0 20 47 35 22 59 27 35 134 -32 21 22 50 20 12 45 21 53 31 19 43 7 - 24 0 0 20 38 11 22 59 37 34 133 -32 21 13 22 20 3 25 21 43 58 19 33 50 - 25 0 0 20 29 28 22 59 47 34 132 -31 21 4 35 19 54 45 21 35 8 19 25 14 - 26 0 0 20 21 26 22 59 56 33 131 -31 20 56 30 19 46 47 21 27 1 19 17 19 - 27 0 0 20 14 7 23 0 5 32 131 -30 20 49 8 19 39 31 21 19 35 19 10 4 - 28 0 0 20 7 29 23 0 15 32 130 -30 20 42 27 19 32 56 21 12 52 19 3 31 - 29 0 0 20 1 33 23 0 24 31 129 -29 20 36 29 19 27 2 21 6 52 18 57 40 - 30 0 0 19 56 20 23 0 33 31 128 -28 20 31 13 19 21 50 21 1 35 18 52 29 - 31 0 0 19 51 48 23 0 41 30 128 -28 20 26 40 19 17 20 20 57 0 18 48 0 - 32 0 0 19 47 58 23 0 50 29 127 -27 20 22 49 19 13 32 20 53 8 18 44 13 - 33 0 0 19 44 51 23 0 58 29 126 -26 20 19 41 19 10 25 20 49 59 18 41 7 - 34 0 0 19 42 26 23 1 6 28 126 -26 20 17 16 19 8 1 20 47 33 18 38 43 - 35 0 0 19 40 43 23 1 14 27 125 -25 20 15 33 19 6 18 20 45 50 18 37 1 - 36 0 0 19 39 44 23 1 22 26 125 -24 20 14 33 19 5 18 20 44 51 18 36 1 - 37 0 0 19 39 26 23 1 30 26 124 -24 20 14 17 19 5 0 20 44 35 18 35 42 - 38 0 0 19 39 52 23 1 37 25 123 -23 20 14 43 19 5 25 20 45 2 18 36 6 - 39 0 0 19 41 0 23 1 45 24 123 -22 20 15 53 19 6 32 20 46 13 18 37 12 - 40 0 0 19 42 52 23 1 52 23 122 -21 20 17 46 19 8 22 20 48 8 18 39 1 - 41 0 0 19 45 26 23 1 58 22 122 -21 20 20 23 19 10 55 20 50 46 18 41 32 - 42 0 0 19 48 44 23 2 5 22 121 -20 20 23 43 19 14 10 20 54 9 18 44 45 - 43 0 0 19 52 45 23 2 11 21 121 -19 20 27 47 19 18 9 20 58 15 18 48 41 - 44 0 0 19 57 30 23 2 17 20 120 -18 20 32 35 19 22 50 21 3 6 18 53 21 - 45 0 0 20 2 59 23 2 23 19 120 -17 20 38 7 19 28 15 21 8 41 18 58 43 - 46 0 0 20 9 11 23 2 29 18 119 -16 20 44 23 19 34 23 21 15 1 19 4 48 - 47 0 0 20 16 7 23 2 34 17 119 -16 20 51 24 19 41 15 21 22 5 19 11 36 - 48 0 0 20 23 47 23 2 39 17 119 -15 20 59 8 19 48 51 21 29 54 19 19 8 - 49 0 0 20 32 11 23 2 44 16 118 -14 21 7 38 19 57 10 21 38 28 19 27 23 - 50 0 0 20 41 20 23 2 49 15 118 -13 21 16 52 20 6 13 21 47 47 19 36 22 - 51 0 0 20 51 13 23 2 53 14 117 -12 21 26 51 20 16 1 21 57 52 19 46 4 - 52 0 0 21 1 50 23 2 58 13 117 -11 21 37 35 20 26 32 22 8 41 19 56 31 - 53 0 0 21 13 13 23 3 2 12 117 -10 21 49 4 20 37 48 22 20 16 20 7 41 - 54 0 0 21 25 20 23 3 5 11 116 -9 22 1 18 20 49 48 22 32 37 20 19 35 - 55 0 0 21 38 12 23 3 8 10 116 -9 22 14 18 21 2 33 22 45 44 20 32 14 - 56 0 0 21 51 49 23 3 12 9 115 -8 22 28 3 21 16 2 22 59 36 20 45 37 - 57 0 0 22 6 12 23 3 14 8 115 -7 22 42 34 21 30 17 23 14 15 20 59 45 - 58 0 0 22 21 19 23 3 17 8 115 -6 22 57 51 21 45 16 23 29 39 21 14 37 - 59 0 0 22 37 13 23 3 19 7 114 -5 23 13 54 22 1 0 23 45 50 21 30 14 - 60 0 0 22 53 52 23 3 21 6 114 -4 23 30 42 22 17 30 24 2 48 21 46 35 - 61 0 0 23 11 16 23 3 23 5 113 -3 23 48 17 22 34 44 24 20 32 22 3 41 - 62 0 0 23 29 26 23 3 24 4 113 -2 24 6 38 22 52 44 24 39 2 22 21 33 - 63 0 0 23 48 22 23 3 25 3 113 -1 24 25 45 23 11 29 24 58 19 .. .. .. - 64 0 0 24 8 4 23 3 26 2 112 0 24 45 39 23 31 0 25 18 23 .. .. .. Uncertainty in time = +/- 5 secs Prediction of 2009 Jun 25.0 Data for the target star ------------------------ * name: TYC 6304-01595-1 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 19 18 20.6140 DE: -19 21 39.765 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .023, .030 ) * V mag [mag]: 8.2 * B mag [mag]: 9.7 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (213) Lilaea approx. diameter [km]: 83 approx. diameter ["]: .086 distance from Earth [AU]: 1.33800 * orbital information: orbit source: Preston date of fit: 2009 Jun 24 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 914 number of rejected observations: 121 time covered by the observations: 1914 Oct 13 - 2009 May 28 1 sigma uncertainty ellipse (major, minor, PA): 0.037, 0.019, 89° remarks: * orbital elements for (213) Lilaea : Mean anomaly = 2.04705220 deg Arg. of pericenter = 163.51014338 deg Long. of node = 122.17726446 deg Inclination = 6.80579002 deg Eccentricity = 0.14524417 Semimajor axis = 2.75372260 AU Perihelion dist = 2.35376046 AU Mag: H = 8.87, G = 0.15 Epoch of elements : MJD 55022.95500000 TDT (2009 Jul 10.955) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jul 10 213 Lilaea 22h 55.7m UT 8.2 19 18 20.614-19 21 39.77TYC 6304-01595-1 9.7 11.3 83 9.2 1.338 -2.163 -13.10 16.6572 -19.356 -162.57 22.12 22.9289 -0.29854 0.69750 -4.65792 -1.99385 0.00004 -0.00026 2000 1.4096972009 7 8.00000163.510143122.177264 6.8057900.14524417 2.7537226 2.3537604 8.6 5.00.15 RATE 2.1568690 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.044 0.035 89 1.43 0.036 0 55007.0020090710_1595-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2009 Jun 24, 17:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org