IOTA/IOTA-ES occultation update for (1714) Sy / TYC 5523-00510-1 event on 2008 May 07, 17:29 UT Visible from N Australia, Indonesia, India, Russia Summary ------- On 2008 May 07 UT, the 17 km diameter asteroid (1714) Sy will occult a 10.1 mag star in the constellation Crater for observers along a path across N Australia, Indonesia, India, Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.5 mag to 15.6 mag (the magnitude of the asteroid) for at most 4.3 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: 30 * date and approx. time of event: 2008 May 07, 17:10 - 2008 May 07, 17:47 UT * magnitude of target star: 10.1 * magnitude drop [mag]: 5.5 * estimated maximum duration [s]: 4.3 * Moon: 8 % sunlit, 105° distance * Sun: 135° distance * rough path description: N Australia, Indonesia, India, Russia The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 2.25 * 1 sigma uncertainty interval [seconds]: +/- 11.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .044 +/- .033) * 1 sigma uncertainty ellipse (major, minor, PA): ( .047", .029", 115° ) * approx speed of asteroid's shadow [km/s]: 3.8815 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5523-00510-1 by 1714 Sy on 2008 May 7 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 99 55 51 67 0 0 17 47 12 1 232 -6 100 24 12 99 27 54 102 37 26 ... .. .. 97 4 16 66 0 0 17 47 10 3 230 -7 97 29 16 96 39 33 99 25 33 94 51 34 94 41 20 65 0 0 17 47 6 4 228 -8 95 3 53 94 18 59 96 48 11 92 40 51 92 40 1 64 0 0 17 47 1 6 226 -9 93 0 42 92 19 30 94 35 56 90 49 3 90 55 43 63 0 0 17 46 56 7 224 -10 91 14 55 90 36 40 92 42 59 89 12 27 89 25 15 62 0 0 17 46 49 8 223 -11 89 43 13 89 7 24 91 5 27 87 48 22 88 6 16 61 0 0 17 46 41 9 222 -12 88 23 12 87 49 26 89 40 35 86 34 46 86 57 1 60 0 0 17 46 33 10 221 -13 87 13 4 86 41 3 88 26 18 85 30 9 85 56 7 59 0 0 17 46 24 11 220 -14 86 11 24 85 40 54 87 21 4 84 33 16 85 2 28 58 0 0 17 46 14 13 219 -15 85 17 5 84 47 55 86 23 39 83 43 10 84 15 12 57 0 0 17 46 4 14 219 -16 84 29 13 84 1 14 85 33 2 82 59 1 83 33 34 56 0 0 17 45 53 15 218 -17 83 47 4 83 20 7 84 48 26 82 20 12 82 56 59 55 0 0 17 45 41 16 218 -18 83 10 1 82 44 0 84 9 12 81 46 8 82 24 56 54 0 0 17 45 28 17 217 -19 82 37 32 82 12 23 83 34 46 81 16 22 81 57 0 53 0 0 17 45 15 18 217 -19 82 9 13 81 44 49 83 4 40 80 50 29 81 32 48 52 0 0 17 45 2 19 217 -20 81 44 39 81 20 58 82 38 29 80 28 10 81 12 0 51 0 0 17 44 47 20 216 -21 81 23 33 81 0 30 82 15 54 80 9 6 80 54 22 50 0 0 17 44 32 21 216 -22 81 5 37 80 43 9 81 56 37 79 53 2 80 39 38 49 0 0 17 44 17 21 216 -23 80 50 36 80 28 41 81 40 22 79 39 45 80 27 35 48 0 0 17 44 1 22 216 -24 80 38 19 80 16 53 81 26 57 79 29 3 80 18 3 47 0 0 17 43 44 23 216 -25 80 28 33 80 7 35 81 16 8 79 20 46 80 10 52 46 0 0 17 43 27 24 216 -26 80 21 9 80 0 36 81 7 46 79 14 43 80 5 53 45 0 0 17 43 9 25 216 -27 80 15 59 79 55 49 81 1 42 79 10 48 80 2 59 44 0 0 17 42 51 26 217 -28 80 12 54 79 53 6 80 57 47 79 8 53 80 2 3 43 0 0 17 42 32 27 217 -29 80 11 48 79 52 20 80 55 55 79 8 51 80 2 59 42 0 0 17 42 13 28 217 -30 80 12 34 79 53 25 80 55 58 79 10 38 80 5 41 41 0 0 17 41 53 28 217 -31 80 15 7 79 56 15 80 57 52 79 14 6 80 10 4 40 0 0 17 41 33 29 218 -32 80 19 22 80 0 47 81 1 30 79 19 14 80 16 5 39 0 0 17 41 12 30 218 -33 80 25 16 80 6 55 81 6 50 79 25 55 80 23 39 38 0 0 17 40 51 31 218 -34 80 32 43 80 14 36 81 13 46 79 34 7 80 32 43 37 0 0 17 40 29 31 219 -35 80 41 41 80 23 47 81 22 14 79 43 46 80 43 15 36 0 0 17 40 6 32 219 -36 80 52 7 80 34 24 81 32 13 79 54 49 80 55 11 35 0 0 17 39 43 33 220 -37 81 3 57 80 46 25 81 43 39 80 7 14 81 8 28 34 0 0 17 39 20 34 220 -38 81 17 10 80 59 48 81 56 29 80 20 59 81 23 6 33 0 0 17 38 56 34 221 -39 81 31 43 81 14 31 82 10 42 80 36 2 81 39 3 32 0 0 17 38 32 35 221 -40 81 47 35 81 30 31 82 26 15 80 52 21 81 56 15 31 0 0 17 38 7 36 222 -41 82 4 44 81 47 48 82 43 7 81 9 54 82 14 44 30 0 0 17 37 42 36 223 -42 82 23 9 82 6 19 83 1 17 81 28 41 82 34 27 29 0 0 17 37 16 37 224 -43 82 42 49 82 26 5 83 20 43 81 48 40 82 55 23 28 0 0 17 36 50 37 224 -44 83 3 43 82 47 4 83 41 25 82 9 51 83 17 32 27 0 0 17 36 24 38 225 -45 83 25 50 83 9 16 84 3 22 82 32 13 83 40 54 26 0 0 17 35 57 38 226 -46 83 49 10 83 32 39 84 26 33 82 55 45 84 5 28 25 0 0 17 35 30 39 227 -47 84 13 43 83 57 15 84 50 59 83 20 28 84 31 15 24 0 0 17 35 2 39 228 -48 84 39 28 84 23 3 85 16 39 83 46 22 84 58 14 23 0 0 17 34 34 40 229 -49 85 6 26 84 50 3 85 43 33 84 13 26 85 26 26 22 0 0 17 34 5 40 229 -50 85 34 38 85 18 16 86 11 42 84 41 41 85 55 52 21 0 0 17 33 36 41 230 -51 86 4 3 85 47 42 86 41 7 85 11 8 86 26 32 20 0 0 17 33 6 41 231 -52 86 34 43 86 18 21 87 11 48 85 41 47 86 58 27 19 0 0 17 32 37 41 232 -53 87 6 39 86 50 16 87 43 46 86 13 40 87 31 39 18 0 0 17 32 6 42 234 -54 87 39 52 87 23 27 88 17 3 86 46 47 88 6 9 17 0 0 17 31 36 42 235 -55 88 14 23 87 57 56 88 51 40 87 21 10 88 41 58 16 0 0 17 31 5 42 236 -56 88 50 14 88 33 44 89 27 40 87 56 51 89 19 10 15 0 0 17 30 33 42 237 -57 89 27 28 89 10 53 90 5 3 88 33 52 89 57 46 14 0 0 17 30 2 42 238 -58 90 6 6 89 49 26 90 43 53 89 12 14 90 37 48 13 0 0 17 29 30 42 239 -59 90 46 12 90 29 26 91 24 13 89 52 1 91 19 21 12 0 0 17 28 57 42 240 -60 91 27 47 91 10 55 92 6 5 90 33 15 92 2 26 11 0 0 17 28 24 42 241 -62 92 10 57 91 53 56 92 49 33 91 15 59 92 47 9 10 0 0 17 27 51 42 243 -63 92 55 44 92 38 35 93 34 41 92 0 17 93 33 33 9 0 0 17 27 17 42 244 -64 93 42 13 93 24 53 94 21 35 92 46 14 94 21 43 8 0 0 17 26 44 42 245 -65 94 30 29 94 12 58 95 10 18 93 33 53 95 11 45 7 0 0 17 26 9 42 246 -66 95 20 38 95 2 53 96 0 57 94 23 20 96 3 45 6 0 0 17 25 35 42 247 -67 96 12 45 95 54 46 96 53 39 95 14 41 96 57 50 5 0 0 17 24 59 41 248 -68 97 6 59 96 48 43 97 48 31 96 8 3 97 54 9 4 0 0 17 24 24 41 249 -69 98 3 27 97 44 53 98 45 42 97 3 33 98 52 50 3 0 0 17 23 48 40 251 -70 99 2 19 98 43 24 99 45 22 98 1 19 99 54 5 2 0 0 17 23 12 40 252 -71 100 3 46 99 44 27 100 47 44 99 1 32 100 58 7 1 0 0 17 22 35 39 253 -72 101 8 0 100 48 16 101 53 0 100 4 24 102 5 9 0 0 0 17 21 58 39 254 -73 102 15 17 101 55 3 103 1 27 101 10 7 103 15 29 - 1 0 0 17 21 21 38 255 -73 103 25 54 103 5 6 104 13 24 102 18 58 Latitude Latitude Latitude Latitude 104 0 0 - 1 36 29 17 20 58 38 255 -74 - 1 27 55 - 1 45 0 - 0 49 3 - 2 23 2 105 0 0 - 2 23 52 17 20 28 37 256 -74 - 2 15 27 - 2 32 15 - 1 37 15 - 3 9 40 106 0 0 - 3 9 17 17 19 58 36 257 -75 - 3 1 1 - 3 17 33 - 2 23 25 - 3 54 23 107 0 0 - 3 52 49 17 19 30 36 257 -75 - 3 44 40 - 4 0 57 - 3 7 38 - 4 37 15 108 0 0 - 4 34 30 17 19 2 35 258 -75 - 4 26 28 - 4 42 31 - 3 49 59 - 5 18 19 109 0 0 - 5 14 25 17 18 36 34 258 -75 - 5 6 29 - 5 22 20 - 4 30 30 - 5 57 39 110 0 0 - 5 52 36 17 18 10 33 259 -75 - 5 44 47 - 6 0 25 - 5 9 15 - 6 35 18 111 0 0 - 6 29 7 17 17 45 33 259 -75 - 6 21 23 - 6 36 50 - 5 46 18 - 7 11 19 112 0 0 - 7 4 0 17 17 21 32 259 -74 - 6 56 21 - 7 11 38 - 6 21 40 - 7 45 43 113 0 0 - 7 37 18 17 16 58 31 260 -74 - 7 29 43 - 7 44 51 - 6 55 25 - 8 18 34 114 0 0 - 8 9 2 17 16 35 30 260 -74 - 8 1 33 - 8 16 30 - 7 27 35 - 8 49 54 115 0 0 - 8 39 16 17 16 13 30 260 -73 - 8 31 50 - 8 46 40 - 7 58 13 - 9 19 45 116 0 0 - 9 8 0 17 15 52 29 260 -73 - 9 0 39 - 9 15 20 - 8 27 20 - 9 48 8 117 0 0 - 9 35 18 17 15 32 28 261 -72 - 9 28 0 - 9 42 34 - 8 54 58 -10 15 5 118 0 0 -10 1 10 17 15 12 27 261 -71 - 9 53 56 -10 8 23 - 9 21 10 -10 40 38 119 0 0 -10 25 38 17 14 54 26 261 -71 -10 18 27 -10 32 48 - 9 45 56 -11 4 49 120 0 0 -10 48 43 17 14 35 25 261 -70 -10 41 36 -10 55 50 -10 9 18 -11 27 39 121 0 0 -11 10 28 17 14 18 25 261 -69 -11 3 23 -11 17 32 -10 31 18 -11 49 9 122 0 0 -11 30 52 17 14 1 24 261 -69 -11 23 50 -11 37 54 -10 51 57 -12 9 20 123 0 0 -11 49 58 17 13 45 23 261 -68 -11 42 58 -11 56 57 -11 11 15 -12 28 13 124 0 0 -12 7 46 17 13 29 22 261 -67 -12 0 48 -12 14 43 -11 29 14 -12 45 49 125 0 0 -12 24 16 17 13 14 21 261 -66 -12 17 20 -12 31 12 -11 45 55 -13 2 10 126 0 0 -12 39 31 17 13 0 20 261 -65 -12 32 36 -12 46 24 -12 1 19 -13 17 15 127 0 0 -12 53 30 17 12 46 19 261 -64 -12 46 36 -13 0 22 -12 15 26 -13 31 6 128 0 0 -13 6 13 17 12 33 19 261 -64 -12 59 21 -13 13 4 -12 28 17 -13 43 42 129 0 0 -13 17 42 17 12 21 18 261 -63 -13 10 51 -13 24 32 -12 39 52 -13 55 6 130 0 0 -13 27 57 17 12 9 17 261 -62 -13 21 7 -13 34 46 -12 50 12 -14 5 16 131 0 0 -13 36 58 17 11 58 16 260 -61 -13 30 9 -13 43 46 -12 59 16 -14 14 13 132 0 0 -13 44 45 17 11 47 15 260 -60 -13 37 56 -13 51 33 -13 7 6 -14 21 57 133 0 0 -13 51 18 17 11 37 14 260 -59 -13 44 30 -13 58 6 -13 13 41 -14 28 28 134 0 0 -13 56 38 17 11 28 13 260 -58 -13 49 50 -14 3 25 -13 19 2 -14 33 47 135 0 0 -14 0 43 17 11 19 12 260 -57 -13 53 55 -14 7 31 -13 23 7 -14 37 53 136 0 0 -14 3 35 17 11 11 11 260 -56 -13 56 46 -14 10 23 -13 25 57 -14 40 46 137 0 0 -14 5 12 17 11 4 10 259 -56 -13 58 23 -14 12 0 -13 27 31 -14 42 26 138 0 0 -14 5 34 17 10 57 9 259 -55 -13 58 45 -14 12 23 -13 27 50 -14 42 52 139 0 0 -14 4 41 17 10 50 9 259 -54 -13 57 51 -14 11 31 -13 26 52 -14 42 3 140 0 0 -14 2 32 17 10 45 8 259 -53 -13 55 40 -14 9 22 -13 24 36 -14 40 0 141 0 0 -13 59 5 17 10 40 7 259 -52 -13 52 13 -14 5 57 -13 21 3 -14 36 40 142 0 0 -13 54 21 17 10 35 6 258 -51 -13 47 27 -14 1 15 -13 16 10 -14 32 4 143 0 0 -13 48 18 17 10 31 5 258 -50 -13 41 22 -13 55 13 -13 9 57 .. .. .. 144 0 0 -13 40 55 17 10 28 4 258 -49 -13 33 56 -13 47 52 -13 2 22 .. .. .. 145 0 0 -13 32 10 17 10 26 3 258 -48 -13 25 9 -13 39 9 -12 53 24 .. .. .. 146 0 0 -13 22 2 17 10 24 2 257 -47 -13 14 59 -13 29 4 -12 43 2 .. .. .. 147 0 0 -13 10 29 17 10 23 1 257 -46 -13 3 23 -13 17 33 -12 31 14 .. .. .. Uncertainty in time = +/- 13 secs [Prediction of 2008 Apr 23.0] Data for the target star ------------------------ * name: TYC 5523-00510-1 * constellation : Crater * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 11 53 19.9383 DE: -12 36 48.040 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .020, .020 ) * V mag [mag]: 10.1 * B mag [mag]: 11.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1714) Sy approx. diameter [km]: 17 approx. diameter ["]: .016 distance from Earth [AU]: 1.50900 * orbital information: orbit source: Preston date of fit: 2008 Apr 22 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 792 number of rejected observations: 12 time covered by the observations: 1949 Dec 28 - 2008 Apr 04 1 sigma uncertainty ellipse (major, minor, PA): 0.043, 0.022, 120° remarks: * orbital elements for (1714) Sy : Mean anomaly = 313.15986667 deg Arg. of pericenter = 321.81040814 deg Long. of node = 301.00389892 deg Inclination = 7.98420395 deg Eccentricity = 0.15457424 Semimajor axis = 2.56693775 AU Perihelion dist = 2.17015531 AU Mag: H = 11.82, G = 0.15 Epoch of elements : MJD 54593.72900000 TDT (2008 May 07.729) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 May 7 1714 Sy 17h 28.9m UT 10.1 11 53 19.938-12 36 48.04TYC 5523-00510-1 11.3 15.6 17 4.3 1.509 -0.423 11.13 50.1906 -12.616 -83.08 17.06 17.4810 0.64400 0.36035 -1.06814 1.91278 0.00381 -0.00079 2000 312.2662052008 5 4.00000321.810408301.003899 7.9842040.15457424 2.5669378 2.170155311.9 5.00.15 RATE 2.3965200 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.047 0.029 115 3.25 0.035 0 54579.5020080507_0510-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 23, 04:06 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org