IOTA/IOTA-ES occultation update for (537) Pauly / TYC 1366-00368-1 event on 2008 Dec 03, 16:57 UT Visible from New Guinea, Phillipines, SE Asia Summary ------- On 2008 Dec 03 UT, the 39 km diameter asteroid (537) Pauly will occult a 9.8 mag star in the constellation Gemini for observers along a path across New Guinea, Phillipines, SE Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.9 mag to 14.7 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: 53 * date and approx. time of event: 2008 Dec 03, 16:49 - 2008 Dec 03, 17:07 UT * magnitude of target star: 9.8 * magnitude drop [mag]: 4.9 * estimated maximum duration [s]: 4.3 * Moon: 29 % sunlit, 158° distance * Sun: 136° distance * rough path description: New Guinea, Phillipines, SE Asia The occultation path -------------------- * approximate projected width [km]: 43 * 1 sigma uncertainty interval [path widths]: +/- 1.20 * 1 sigma uncertainty interval [seconds]: +/- 5.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .026 +/- .021) * 1 sigma uncertainty ellipse (major, minor, PA): ( .026", .021", 90° ) * approx speed of asteroid's shadow [km/s]: 9.1491 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1366-00368-1 by 537 Pauly on 2008 Dec 3 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 59 0 0 - 5 59 52 17 7 40 0 72 -40 - 5 47 37 .. .. .. .. .. .. .. .. .. 60 0 0 - 5 40 49 17 7 40 1 72 -41 - 5 28 36 - 5 53 3 .. .. .. - 6 22 31 61 0 0 - 5 22 12 17 7 39 2 72 -42 - 5 10 0 - 5 34 25 .. .. .. - 6 3 48 62 0 0 - 5 4 1 17 7 39 3 72 -43 - 4 51 51 - 5 16 12 - 4 22 44 - 5 45 32 63 0 0 - 4 46 16 17 7 38 4 72 -44 - 4 34 8 - 4 58 26 - 4 5 5 - 5 27 42 64 0 0 - 4 28 59 17 7 37 5 72 -45 - 4 16 52 - 4 41 7 - 3 47 52 - 5 10 19 65 0 0 - 4 12 7 17 7 35 6 72 -46 - 4 0 2 - 4 24 14 - 3 31 7 - 4 53 23 66 0 0 - 3 55 43 17 7 34 7 72 -47 - 3 43 40 - 4 7 48 - 3 14 47 - 4 36 53 67 0 0 - 3 39 46 17 7 32 8 72 -48 - 3 27 44 - 3 51 50 - 2 58 55 - 4 20 51 68 0 0 - 3 24 16 17 7 30 9 71 -49 - 3 12 15 - 3 36 18 - 2 43 30 - 4 5 16 69 0 0 - 3 9 14 17 7 27 10 71 -50 - 2 57 14 - 3 21 14 - 2 28 32 - 3 50 9 70 0 0 - 2 54 38 17 7 25 11 71 -51 - 2 42 40 - 3 6 38 - 2 14 2 - 3 35 29 71 0 0 - 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4 19 16 137 0 0 - 3 53 47 16 58 9 65 29 -48 - 3 41 50 - 4 5 45 - 3 13 13 - 4 34 35 138 0 0 - 4 9 25 16 57 57 65 27 -47 - 3 57 26 - 4 21 25 - 3 28 47 - 4 50 17 139 0 0 - 4 25 27 16 57 45 66 25 -46 - 4 13 27 - 4 37 28 - 3 44 44 - 5 6 23 140 0 0 - 4 41 52 16 57 33 66 23 -45 - 4 29 51 - 4 53 54 - 4 1 5 - 5 22 52 141 0 0 - 4 58 40 16 57 21 66 20 -44 - 4 46 38 - 5 10 43 - 4 17 49 - 5 39 45 142 0 0 - 5 15 51 16 57 9 66 18 -43 - 5 3 47 - 5 27 56 - 4 34 55 - 5 57 0 143 0 0 - 5 33 25 16 56 57 66 16 -42 - 5 21 20 - 5 45 31 - 4 52 25 - 6 14 39 144 0 0 - 5 51 21 16 56 45 66 14 -41 - 5 39 15 - 6 3 29 - 5 10 17 - 6 32 40 145 0 0 - 6 9 40 16 56 33 66 11 -40 - 5 57 32 - 6 21 49 - 5 28 31 - 6 51 3 146 0 0 - 6 28 21 16 56 21 66 9 -39 - 6 16 12 - 6 40 31 - 5 47 7 - 7 9 49 147 0 0 - 6 47 23 16 56 9 65 7 -38 - 6 35 13 - 6 59 35 - 6 6 5 - 7 28 56 148 0 0 - 7 6 47 16 55 57 65 5 -38 - 6 54 35 - 7 19 0 - 6 25 24 - 7 48 25 149 0 0 - 7 26 32 16 55 45 65 2 -37 - 7 14 19 - 7 38 47 - 6 45 4 - 8 8 15 150 0 0 - 7 46 39 16 55 33 65 0 -36 - 7 34 24 - 7 58 55 - 7 5 5 - 8 28 26 151 0 0 - 8 7 5 16 55 21 64 358 -35 - 7 54 49 - 8 19 23 - 7 25 27 - 8 48 58 152 0 0 - 8 27 52 16 55 9 64 356 -34 - 8 15 35 - 8 40 11 - 7 46 9 - 9 9 50 153 0 0 - 8 48 59 16 54 57 63 354 -33 - 8 36 40 - 9 1 20 - 8 7 11 - 9 31 2 154 0 0 - 9 10 26 16 54 45 63 352 -32 - 8 58 5 - 9 22 48 - 8 28 33 - 9 52 34 155 0 0 - 9 32 12 16 54 33 62 350 -31 - 9 19 50 - 9 44 35 - 8 50 14 -10 14 25 156 0 0 - 9 54 17 16 54 21 62 349 -30 - 9 41 53 -10 6 42 - 9 12 14 -10 36 35 157 0 0 -10 16 40 16 54 9 61 347 -29 -10 4 15 -10 29 6 - 9 34 32 -10 59 3 158 0 0 -10 39 22 16 53 58 61 345 -28 -10 26 55 -10 51 49 - 9 57 9 -11 21 50 159 0 0 -11 2 21 16 53 46 60 344 -27 -10 49 53 -11 14 50 -10 20 3 -11 44 54 160 0 0 -11 25 37 16 53 34 59 342 -26 -11 13 8 -11 38 8 -10 43 14 -12 8 16 161 0 0 -11 49 11 16 53 23 59 341 -25 -11 36 40 -12 1 43 -11 6 43 -12 31 54 162 0 0 -12 13 0 16 53 11 58 339 -24 -12 0 28 -12 25 34 -11 30 28 -12 55 49 163 0 0 -12 37 6 16 53 0 57 338 -23 -12 24 32 -12 49 41 -11 54 28 -13 20 0 164 0 0 -13 1 27 16 52 48 57 337 -22 -12 48 52 -13 14 4 -12 18 45 -13 44 26 165 0 0 -13 26 4 16 52 37 56 335 -21 -13 13 27 -13 38 42 -12 43 16 -14 9 7 166 0 0 -13 50 54 16 52 26 55 334 -20 -13 38 16 -14 3 34 -13 8 2 -14 34 3 167 0 0 -14 15 59 16 52 15 54 333 -19 -14 3 20 -14 28 40 -13 33 2 -14 59 12 168 0 0 -14 41 17 16 52 4 54 332 -18 -14 28 36 -14 54 0 -13 58 16 -15 24 35 169 0 0 -15 6 48 16 51 53 53 331 -17 -14 54 6 -15 19 32 -14 23 42 -15 50 11 170 0 0 -15 32 32 16 51 42 52 330 -16 -15 19 48 -15 45 17 -14 49 21 -16 15 59 171 0 0 -15 58 27 16 51 32 51 329 -15 -15 45 42 -16 11 14 -15 15 12 -16 41 59 172 0 0 -16 24 34 16 51 21 50 328 -14 -16 11 47 -16 37 21 -15 41 14 -17 8 10 173 0 0 -16 50 51 16 51 11 49 327 -13 -16 38 3 -17 3 40 -16 7 27 -17 34 31 174 0 0 -17 17 18 16 51 1 49 326 -12 -17 4 29 -17 30 8 -16 33 50 -18 1 3 175 0 0 -17 43 54 16 50 51 48 325 -11 -17 31 4 -17 56 46 -17 0 22 -18 27 43 176 0 0 -18 10 40 16 50 41 47 324 -10 -17 57 49 -18 23 32 -17 27 4 -18 54 33 177 0 0 -18 37 33 16 50 31 46 324 -9 -18 24 41 -18 50 27 -17 53 53 -19 21 30 178 0 0 -19 4 34 16 50 21 45 323 -8 -18 51 41 -19 17 29 -18 20 51 -19 48 35 179 0 0 -19 31 42 16 50 12 44 322 -7 -19 18 48 -19 44 38 -18 47 55 -20 15 46 180 0 0 -19 58 56 16 50 3 43 321 -6 -19 46 0 -20 11 53 -19 15 5 -20 43 4 -179 0 0 -20 26 15 16 49 54 42 321 -5 -20 13 19 -20 39 13 -19 42 22 -21 10 27 -178 0 0 -20 53 40 16 49 45 41 320 -4 -20 40 42 -21 6 39 -20 9 43 -21 37 54 -177 0 0 -21 21 8 16 49 36 40 319 -3 -21 8 10 -21 34 8 -20 37 8 -22 5 26 -176 0 0 -21 48 40 16 49 27 39 319 -2 -21 35 41 -22 1 41 -21 4 37 -22 33 0 -175 0 0 -22 16 15 16 49 19 38 318 -1 -22 3 15 -22 29 16 -21 32 9 -23 0 38 Uncertainty in time = +/- 6 secs [Prediction of 2008 Nov 26.0] Data for the target star ------------------------ * name: TYC 1366-00368-1 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 46 54.4622 DE: +17 43 01.396 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .019, .018 ) * V mag [mag]: 9.8 * B mag [mag]: 10.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (537) Pauly approx. diameter [km]: 39 approx. diameter ["]: .018 distance from Earth [AU]: 2.93800 * orbital information: orbit source: Preston date of fit: 2008 Nov 26 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 781 number of rejected observations: 96 time covered by the observations: 1902 Feb 24 - 2008 Nov 16 1 sigma uncertainty ellipse (major, minor, PA): 0.018, 0.011, 90° remarks: * orbital elements for (537) Pauly : Mean anomaly = 149.31258438 deg Arg. of pericenter = 184.11214677 deg Long. of node = 120.46254014 deg Inclination = 9.88924009 deg Eccentricity = 0.23080526 Semimajor axis = 3.07120327 AU Perihelion dist = 2.36235340 AU Mag: H = 8.61, G = 0.15 Epoch of elements : MJD 54803.70600000 TDT (2008 Dec 03.706) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Dec 3 537 Pauly 16h 57.1m UT 9.8 7 46 54.462 17 43 1.40TYC 1366-00368-1 10.2 14.7 39 4.3 2.938 -1.031 4.75 149.5707 17.715 -76.75 -22.22 16.9510 -0.12543 -0.38927 -4.91473 1.58498 -0.00407 0.00101 2000 148.63393320081130.00000184.112147120.462540 9.8892400.23080526 3.0712033 2.3623534 8.8 5.00.15 RATE 1.8312230 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.026 0.021 90 2.20 0.022 0 54796.5020081203_0368-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 26, 23:35 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org