IOTA/IOTA-ES occultation update for (47) Aglaja / TYC 6898-00508-1 event on 2008 May 10, 17:27 UT Visible from N Australia, Indonesia, SE Asia Summary ------- On 2008 May 10 UT, the 140 km diameter asteroid (47) Aglaja will occult a 11.6 mag star in the constellation Sagittarius for observers along a path across N Australia, Indonesia, SE Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.2 mag to 12.4 mag (the magnitude of the asteroid) for at most 22.4 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: 99 * date and approx. time of event: 2008 May 10, 17:11 - 2008 May 10, 17:34 UT * magnitude of target star: 11.6 * magnitude drop [mag]: 1.2 * estimated maximum duration [s]: 22.4 * Moon: 34 % sunlit, 171° distance * Sun: 117° distance * rough path description: N Australia, Indonesia, SE Asia The occultation path -------------------- * approximate projected width [km]: 141 * 1 sigma uncertainty interval [path widths]: +/- 0.27 * 1 sigma uncertainty interval [seconds]: +/- 6.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .033 +/- .026) * 1 sigma uncertainty ellipse (major, minor, PA): ( .033", .026", 84° ) * approx speed of asteroid's shadow [km/s]: 6.2616 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6898-00508-1 by 47 Aglaja on 2008 May 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 90 0 0 16 8 4 17 11 4 1 119 -54 15 24 21 16 51 50 15 0 47 17 15 30 91 0 0 15 35 23 17 11 5 2 120 -55 14 51 36 16 19 13 14 27 59 16 42 56 92 0 0 15 2 24 17 11 6 3 120 -56 14 18 33 15 46 19 13 54 54 16 10 3 93 0 0 14 29 8 17 11 7 4 120 -57 13 45 14 15 13 7 13 21 32 15 36 53 94 0 0 13 55 36 17 11 9 5 120 -57 13 11 37 14 39 38 12 47 54 15 3 26 95 0 0 13 21 48 17 11 11 7 121 -58 12 37 46 14 5 53 12 14 1 14 29 43 96 0 0 12 47 44 17 11 13 8 121 -59 12 3 40 13 31 53 11 39 53 13 55 45 97 0 0 12 13 28 17 11 16 9 121 -60 11 29 20 12 57 39 11 5 31 13 21 33 98 0 0 11 38 58 17 11 20 10 121 -60 10 54 47 12 23 12 10 30 57 12 47 7 99 0 0 11 4 16 17 11 23 11 122 -61 10 20 3 11 48 32 9 56 11 12 12 29 100 0 0 10 29 22 17 11 28 12 122 -62 9 45 7 11 13 41 9 21 15 11 37 39 101 0 0 9 54 19 17 11 32 13 122 -62 9 10 2 10 38 40 8 46 9 11 2 39 102 0 0 9 19 7 17 11 37 15 122 -63 8 34 48 10 3 30 8 10 54 10 27 29 103 0 0 8 43 47 17 11 43 16 122 -63 7 59 27 9 28 11 7 35 32 9 52 11 104 0 0 8 8 20 17 11 49 17 122 -64 7 23 59 8 52 45 7 0 3 9 16 46 105 0 0 7 32 47 17 11 55 18 123 -64 6 48 25 8 17 13 6 24 29 8 41 14 106 0 0 6 57 10 17 12 2 19 123 -65 6 12 47 7 41 36 5 48 51 8 5 38 107 0 0 6 21 29 17 12 9 20 123 -65 5 37 6 7 5 55 5 13 10 7 29 57 108 0 0 5 45 46 17 12 17 22 123 -65 5 1 23 6 30 12 4 37 27 6 54 14 109 0 0 5 10 2 17 12 25 23 123 -66 4 25 40 5 54 28 4 1 44 6 18 29 110 0 0 4 34 18 17 12 33 24 123 -66 3 49 56 5 18 43 3 26 1 5 42 44 111 0 0 3 58 35 17 12 42 25 123 -66 3 14 15 4 42 59 2 50 20 5 7 0 112 0 0 3 22 55 17 12 51 26 123 -66 2 38 36 4 7 18 2 14 42 4 31 18 113 0 0 2 47 19 17 13 1 28 124 -66 2 3 2 3 31 40 1 39 8 3 55 39 114 0 0 2 11 48 17 13 11 29 124 -66 1 27 33 2 56 7 1 3 40 3 20 4 115 0 0 1 36 23 17 13 22 30 124 -66 0 52 10 2 20 40 0 28 19 2 44 36 116 0 0 1 1 5 17 13 33 31 124 -66 0 16 55 1 45 19 - 0 6 54 2 9 15 117 0 0 0 25 57 17 13 44 32 124 -66 - 0 18 11 1 10 8 - 0 41 59 1 34 1 118 0 0 - 0 9 2 17 13 56 34 124 -65 - 0 53 6 0 35 6 - 1 16 52 0 58 58 119 0 0 - 0 43 50 17 14 8 35 124 -65 - 1 27 50 0 0 15 - 1 51 34 0 24 5 120 0 0 - 1 18 25 17 14 20 36 124 -65 - 2 2 22 - 0 34 24 - 2 26 4 - 0 10 36 121 0 0 - 1 52 47 17 14 33 37 124 -64 - 2 36 39 - 1 8 50 - 3 0 19 - 0 45 4 122 0 0 - 2 26 54 17 14 46 38 124 -64 - 3 10 42 - 1 43 1 - 3 34 20 - 1 19 18 123 0 0 - 3 0 45 17 14 59 40 124 -63 - 3 44 29 - 2 16 57 - 4 8 4 - 1 53 17 124 0 0 - 3 34 20 17 15 13 41 124 -63 - 4 17 58 - 2 50 37 - 4 41 31 - 2 26 59 125 0 0 - 4 7 36 17 15 27 42 124 -62 - 4 51 9 - 3 23 58 - 5 14 39 - 3 0 23 126 0 0 - 4 40 33 17 15 42 43 124 -61 - 5 24 2 - 3 57 1 - 5 47 28 - 3 33 28 127 0 0 - 5 13 11 17 15 56 44 124 -61 - 5 56 33 - 4 29 44 - 6 19 57 - 4 6 14 128 0 0 - 5 45 27 17 16 11 45 125 -60 - 6 28 44 - 5 2 6 - 6 52 5 - 4 38 40 129 0 0 - 6 17 21 17 16 27 47 125 -59 - 7 0 32 - 5 34 6 - 7 23 50 - 5 10 43 130 0 0 - 6 48 53 17 16 42 48 125 -59 - 7 31 58 - 6 5 44 - 7 55 12 - 5 42 24 131 0 0 - 7 20 1 17 16 58 49 125 -58 - 8 2 59 - 6 36 58 - 8 26 9 - 6 13 42 132 0 0 - 7 50 44 17 17 14 50 125 -57 - 8 33 35 - 7 7 48 - 8 56 42 - 6 44 35 133 0 0 - 8 21 1 17 17 30 51 125 -56 - 9 3 46 - 7 38 12 - 9 26 50 - 7 15 2 134 0 0 - 8 50 52 17 17 47 52 125 -55 - 9 33 31 - 8 8 10 - 9 56 30 - 7 45 4 135 0 0 - 9 20 17 17 18 3 54 125 -55 -10 2 48 - 8 37 41 -10 25 44 - 8 14 39 136 0 0 - 9 49 13 17 18 20 55 125 -54 -10 31 38 - 9 6 45 -10 54 30 - 8 43 46 137 0 0 -10 17 41 17 18 37 56 125 -53 -10 59 59 - 9 35 20 -11 22 47 - 9 12 26 138 0 0 -10 45 41 17 18 54 57 125 -52 -11 27 51 -10 3 26 -11 50 35 - 9 40 36 139 0 0 -11 13 10 17 19 12 58 126 -51 -11 55 13 -10 31 3 -12 17 54 -10 8 17 140 0 0 -11 40 10 17 19 29 59 126 -50 -12 22 5 -10 58 10 -12 44 42 -10 35 28 141 0 0 -12 6 39 17 19 47 60 126 -49 -12 48 27 -11 24 47 -13 11 0 -11 2 8 142 0 0 -12 32 37 17 20 5 61 126 -48 -13 14 17 -11 50 52 -13 36 46 -11 28 17 143 0 0 -12 58 3 17 20 22 62 127 -47 -13 39 36 -12 16 25 -14 2 1 -11 53 55 144 0 0 -13 22 57 17 20 40 64 127 -46 -14 4 23 -12 41 27 -14 26 44 -12 19 0 145 0 0 -13 47 19 17 20 58 65 127 -45 -14 28 38 -13 5 56 -14 50 55 -12 43 34 146 0 0 -14 11 9 17 21 17 66 128 -45 -14 52 20 -13 29 53 -15 14 33 -13 7 34 147 0 0 -14 34 25 17 21 35 67 128 -44 -15 15 29 -13 53 17 -15 37 38 -13 31 2 148 0 0 -14 57 8 17 21 53 68 129 -43 -15 38 5 -14 16 7 -16 0 10 -13 53 56 149 0 0 -15 19 17 17 22 12 69 130 -42 -16 0 7 -14 38 24 -16 22 8 -14 16 17 150 0 0 -15 40 53 17 22 30 70 130 -41 -16 21 35 -15 0 6 -16 43 33 -14 38 3 151 0 0 -16 1 55 17 22 48 71 131 -40 -16 42 30 -15 21 15 -17 4 24 -14 59 16 152 0 0 -16 22 22 17 23 7 72 132 -39 -17 2 51 -15 41 50 -17 24 41 -15 19 54 153 0 0 -16 42 16 17 23 26 73 133 -38 -17 22 37 -16 1 50 -17 44 23 -15 39 58 154 0 0 -17 1 35 17 23 44 74 135 -37 -17 41 49 -16 21 16 -18 3 32 -15 59 28 155 0 0 -17 20 19 17 24 3 75 136 -36 -18 0 27 -16 40 7 -18 22 6 -16 18 22 156 0 0 -17 38 29 17 24 21 76 138 -35 -18 18 30 -16 58 23 -18 40 6 -16 36 42 157 0 0 -17 56 4 17 24 40 77 140 -34 -18 35 59 -17 16 4 -18 57 31 -16 54 27 158 0 0 -18 13 4 17 24 58 77 142 -33 -18 52 53 -17 33 11 -19 14 22 -17 11 36 159 0 0 -18 29 29 17 25 17 78 145 -32 -19 9 13 -17 49 42 -19 30 38 -17 28 11 160 0 0 -18 45 20 17 25 36 79 148 -31 -19 24 57 -18 5 39 -19 46 20 -17 44 11 161 0 0 -19 0 36 17 25 54 80 152 -30 -19 40 7 -18 21 0 -20 1 27 -17 59 36 162 0 0 -19 15 17 17 26 13 80 156 -29 -19 54 43 -18 35 47 -20 15 59 -18 14 25 163 0 0 -19 29 23 17 26 31 81 161 -28 -20 8 44 -18 49 58 -20 29 57 -18 28 40 164 0 0 -19 42 54 17 26 49 81 167 -27 -20 22 10 -19 3 35 -20 43 20 -18 42 19 165 0 0 -19 55 51 17 27 8 82 173 -26 -20 35 1 -19 16 36 -20 56 9 -18 55 23 166 0 0 -20 8 12 17 27 26 82 180 -25 -20 47 18 -19 29 3 -21 8 23 -19 7 52 167 0 0 -20 19 59 17 27 44 82 187 -24 -20 59 0 -19 40 54 -21 20 3 -19 19 46 168 0 0 -20 31 12 17 28 3 82 194 -23 -21 10 8 -19 52 11 -21 31 9 -19 31 6 169 0 0 -20 41 49 17 28 21 82 201 -23 -21 20 42 -20 2 53 -21 41 40 -19 41 50 170 0 0 -20 51 52 17 28 39 82 208 -22 -21 30 41 -20 13 0 -21 51 37 -19 51 59 171 0 0 -21 1 21 17 28 57 81 214 -21 -21 40 6 -20 22 33 -22 1 0 -20 1 34 172 0 0 -21 10 15 17 29 15 81 220 -20 -21 48 56 -20 31 30 -22 9 48 -20 10 33 173 0 0 -21 18 35 17 29 33 80 224 -19 -21 57 13 -20 39 54 -22 18 3 -20 18 58 174 0 0 -21 26 20 17 29 51 80 228 -18 -22 4 55 -20 47 42 -22 25 43 -20 26 49 175 0 0 -21 33 32 17 30 9 79 232 -17 -22 12 3 -20 54 56 -22 32 50 -20 34 4 176 0 0 -21 40 9 17 30 26 78 235 -16 -22 18 38 -21 1 36 -22 39 23 -20 40 46 177 0 0 -21 46 12 17 30 44 78 238 -15 -22 24 38 -21 7 42 -22 45 22 -20 46 52 178 0 0 -21 51 40 17 31 1 77 240 -14 -22 30 5 -21 13 13 -22 50 47 -20 52 25 179 0 0 -21 56 35 17 31 19 76 242 -13 -22 34 57 -21 18 10 -22 55 39 -20 57 23 180 0 0 -22 0 56 17 31 36 75 243 -12 -22 39 16 -21 22 32 -22 59 57 -21 1 47 -179 0 0 -22 4 43 17 31 53 74 245 -11 -22 43 2 -21 26 21 -23 3 42 -21 5 36 -178 0 0 -22 7 57 17 32 10 73 246 -10 -22 46 14 -21 29 36 -23 6 53 -21 8 52 -177 0 0 -22 10 36 17 32 28 72 247 -9 -22 48 52 -21 32 16 -23 9 31 -21 11 33 -176 0 0 -22 12 42 17 32 44 72 248 -8 -22 50 57 -21 34 23 -23 11 35 -21 13 40 -175 0 0 -22 14 14 17 33 1 71 249 -7 -22 52 29 -21 35 56 -23 13 6 -21 15 13 -174 0 0 -22 15 13 17 33 18 70 249 -6 -22 53 27 -21 36 55 -23 14 4 -21 16 13 -173 0 0 -22 15 38 17 33 35 69 250 -5 -22 53 52 -21 37 20 -23 14 29 -21 16 38 -172 0 0 -22 15 29 17 33 51 68 250 -5 -22 53 43 -21 37 12 -23 14 20 -21 16 30 -171 0 0 -22 14 47 17 34 8 67 251 -4 -22 53 1 -21 36 30 -23 13 39 -21 15 48 -170 0 0 -22 13 32 17 34 24 66 251 -3 -22 51 47 -21 35 14 -23 12 24 -21 14 32 -169 0 0 -22 11 44 17 34 40 65 251 -2 -22 49 59 -21 33 25 -23 10 37 -21 12 42 -168 0 0 -22 9 22 17 34 56 64 251 -1 -22 47 38 -21 31 2 -23 8 16 -21 10 19 Uncertainty in time = +/- 8 secs [Prediction of 2008 May 8.0] Data for the target star ------------------------ * name: TYC 6898-00508-1 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 19 46 31.5942 DE: -27 50 33.419 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .022 ) * V mag [mag]: 11.6 * B mag [mag]: 12.4 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (47) Aglaja approx. diameter [km]: 140 approx. diameter ["]: .098 distance from Earth [AU]: 1.96300 * orbital information: orbit source: Preston date of fit: 2008 May 07 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 799 number of rejected observations: 146 time covered by the observations: 1900 May 23 - 2008 May 01 1 sigma uncertainty ellipse (major, minor, PA): 0.023, 0.014, 77° remarks: * orbital elements for (47) Aglaja : Mean anomaly = 325.70569075 deg Arg. of pericenter = 314.16974512 deg Long. of node = 3.19450766 deg Inclination = 4.98202137 deg Eccentricity = 0.13543479 Semimajor axis = 2.88053903 AU Perihelion dist = 2.49041382 AU Mag: H = 7.98, G = 0.16 Epoch of elements : MJD 54596.72800000 TDT (2008 May 10.728) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 May 10 47 Aglaja 17h 27.9m UT 11.6 19 46 31.594-27 50 33.42TYC 6898-00508-1 12.4 12.4 140 22.4 1.963 1.170 -3.05 165.7721 -27.842 -82.88 17.86 17.4651 0.02677 0.13050 3.46830 -0.67950 -0.00492 -0.00060 2000 324.3493172008 5 4.00000314.169745 3.194508 4.9820210.13543479 2.8805390 2.4904138 7.8 5.00.16 RATE 2.0160140 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.033 0.026 84 1.27 0.026 0 54594.5020080510_0508-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 May 08, 02:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org