IOTA/IOTA-ES occultation update for (419) Aurelia / TYC 0604-01147-1 event on 2009 Jul 04, 01:54 UT Visible from Summary ------- On 2009 Jul 04 UT, the 129 km diameter asteroid (419) Aurelia will occult a 12.6 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.0 mag to 13.0 mag (the magnitude of the asteroid) for at most 7.3 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: 97 * date and approx. time of event: 2009 Jul 04, 01:50 - 2009 Jul 04, 01:55 UT * magnitude of target star: 12.6 * magnitude drop [mag]: 1.0 * estimated maximum duration [s]: 7.3 * Moon: 90 % sunlit, 130° distance * Sun: 87° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 161 * 1 sigma uncertainty interval [path widths]: +/- 0.39 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .034 +/- .033) * 1 sigma uncertainty ellipse (major, minor, PA): ( .035", .033", 85° ) * approx speed of asteroid's shadow [km/s]: 17.7191 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0604-01147-1 by 419 Aurelia on 2009 Jul 4 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 - 29 0 0 11 51 58 1 50 42 0 80 -55 11 7 39 12 36 43 .. .. .. 13 11 57 - 28 0 0 12 2 27 1 50 42 1 81 -55 11 18 3 12 47 18 .. .. .. 13 22 36 - 27 0 0 12 13 31 1 50 42 2 81 -55 11 29 2 12 58 27 10 54 38 13 33 49 - 26 0 0 12 25 10 1 50 42 3 81 -55 11 40 36 13 10 11 11 6 7 13 45 37 - 25 0 0 12 37 23 1 50 43 4 81 -55 11 52 43 13 22 29 11 18 10 13 58 0 - 24 0 0 12 50 10 1 50 43 5 81 -54 12 5 24 13 35 22 11 30 47 14 10 58 - 23 0 0 13 3 31 1 50 44 6 82 -54 12 18 39 13 48 50 11 43 58 14 24 31 - 22 0 0 13 17 26 1 50 45 7 82 -54 12 32 28 14 2 52 11 57 42 14 38 38 - 21 0 0 13 31 55 1 50 46 8 82 -53 12 46 51 14 17 28 12 12 0 14 53 19 - 20 0 0 13 46 59 1 50 47 9 82 -53 13 1 48 14 32 38 12 26 52 15 8 34 - 19 0 0 14 2 36 1 50 49 10 83 -52 13 17 18 14 48 22 12 42 16 15 24 24 - 18 0 0 14 18 46 1 50 50 11 83 -52 13 33 21 15 4 40 12 58 14 15 40 48 - 17 0 0 14 35 30 1 50 52 12 83 -51 13 49 58 15 21 31 13 14 46 15 57 46 - 16 0 0 14 52 47 1 50 54 13 84 -51 14 7 8 15 38 56 13 31 50 16 15 17 - 15 0 0 15 10 38 1 50 55 14 84 -50 14 24 50 15 56 55 13 49 26 16 33 22 - 14 0 0 15 29 1 1 50 58 15 84 -50 14 43 6 16 15 26 14 7 36 16 52 0 - 13 0 0 15 47 57 1 51 0 16 84 -49 15 1 54 16 34 31 14 26 18 17 11 11 - 12 0 0 16 7 26 1 51 2 17 85 -49 15 21 14 16 54 8 14 45 32 17 30 55 - 11 0 0 16 27 26 1 51 4 18 85 -48 15 41 6 17 14 17 15 5 17 17 51 12 - 10 0 0 16 47 59 1 51 7 19 86 -47 16 1 30 17 34 59 15 25 35 18 12 0 - 9 0 0 17 9 3 1 51 10 20 86 -46 16 22 25 17 56 12 15 46 23 18 33 21 - 8 0 0 17 30 39 1 51 13 21 86 -46 16 43 52 18 17 57 16 7 43 18 55 13 - 7 0 0 17 52 45 1 51 16 22 87 -45 17 5 49 18 40 13 16 29 33 19 17 36 - 6 0 0 18 15 22 1 51 19 23 87 -44 17 28 17 19 2 59 16 51 54 19 40 31 - 5 0 0 18 38 29 1 51 22 24 88 -43 17 51 14 19 26 16 17 14 44 20 3 55 - 4 0 0 19 2 6 1 51 25 25 88 -43 18 14 42 19 50 2 17 38 5 20 27 50 - 3 0 0 19 26 12 1 51 29 26 89 -42 18 38 38 20 14 18 18 1 54 20 52 14 - 2 0 0 19 50 47 1 51 33 27 89 -41 19 3 3 20 39 3 18 26 11 21 17 7 - 1 0 0 20 15 50 1 51 36 28 90 -40 19 27 56 21 4 17 18 50 57 21 42 28 0 0 0 20 41 21 1 51 40 29 90 -39 19 53 17 21 29 58 19 16 11 22 8 18 1 0 0 21 7 19 1 51 44 30 91 -38 20 19 5 21 56 6 19 41 51 22 34 34 2 0 0 21 33 43 1 51 48 31 92 -38 20 45 20 22 22 41 20 7 58 23 1 18 3 0 0 22 0 34 1 51 53 32 92 -37 21 12 0 22 49 42 20 34 31 23 28 27 4 0 0 22 27 50 1 51 57 33 93 -36 21 39 6 23 17 8 21 1 29 23 56 1 5 0 0 22 55 30 1 52 2 34 94 -35 22 6 36 23 44 59 21 28 52 24 24 1 6 0 0 23 23 34 1 52 6 34 94 -34 22 34 31 24 13 14 21 56 38 24 52 24 7 0 0 23 52 2 1 52 11 35 95 -33 23 2 48 24 41 51 22 24 48 25 21 10 8 0 0 24 20 51 1 52 16 36 96 -32 23 31 27 25 10 51 22 53 20 25 50 18 9 0 0 24 50 2 1 52 21 37 97 -31 24 0 28 25 40 13 23 22 13 26 19 48 10 0 0 25 19 34 1 52 26 38 98 -30 24 29 50 26 9 55 23 51 27 26 49 38 11 0 0 25 49 25 1 52 31 39 99 -29 24 59 32 26 39 56 24 21 2 27 19 48 12 0 0 26 19 36 1 52 36 40 100 -28 25 29 32 27 10 17 24 50 55 27 50 17 13 0 0 26 50 4 1 52 41 40 101 -27 25 59 51 27 40 55 25 21 6 28 21 3 14 0 0 27 20 49 1 52 47 41 102 -26 26 30 26 28 11 50 25 51 34 28 52 6 15 0 0 27 51 50 1 52 52 42 103 -25 27 1 18 28 43 0 26 22 19 29 23 24 16 0 0 28 23 5 1 52 58 43 104 -24 27 32 24 29 14 26 26 53 18 29 54 57 17 0 0 28 54 35 1 53 3 43 105 -23 28 3 45 29 46 5 27 24 32 30 26 44 18 0 0 29 26 17 1 53 9 44 106 -22 28 35 19 30 17 56 27 55 59 30 58 43 19 0 0 29 58 11 1 53 15 45 108 -21 29 7 4 30 49 59 28 27 38 31 30 53 20 0 0 30 30 16 1 53 20 46 109 -20 29 39 0 31 22 12 28 59 28 32 3 13 21 0 0 31 2 30 1 53 26 46 110 -19 30 11 6 31 54 34 29 31 28 32 35 42 22 0 0 31 34 52 1 53 32 47 112 -18 30 43 20 32 27 4 30 3 36 33 8 18 23 0 0 32 7 21 1 53 38 47 113 -17 31 15 42 32 59 41 30 35 52 33 41 1 24 0 0 32 39 56 1 53 44 48 115 -16 31 48 10 33 32 24 31 8 14 34 13 50 25 0 0 33 12 35 1 53 50 49 116 -15 32 20 42 34 5 10 31 40 42 34 46 42 26 0 0 33 45 18 1 53 56 49 118 -14 32 53 19 34 38 0 32 13 14 35 19 38 27 0 0 34 18 4 1 54 2 50 119 -13 33 25 58 35 10 52 32 45 48 35 52 34 28 0 0 34 50 50 1 54 8 50 121 -12 33 58 39 35 43 44 33 18 24 36 25 32 29 0 0 35 23 36 1 54 14 50 123 -11 34 31 20 36 16 36 33 51 1 36 58 28 30 0 0 35 56 21 1 54 20 51 124 -10 35 3 59 36 49 26 34 23 37 37 31 22 31 0 0 36 29 3 1 54 26 51 126 -9 35 36 37 37 22 13 34 56 11 38 4 13 32 0 0 37 1 42 1 54 32 51 128 -8 36 9 11 37 54 56 35 28 43 38 36 59 33 0 0 37 34 15 1 54 38 52 130 -7 36 41 41 38 27 33 36 1 10 39 9 40 34 0 0 38 6 43 1 54 44 52 131 -6 37 14 6 39 0 4 36 33 32 39 42 13 35 0 0 38 39 3 1 54 50 52 133 -5 37 46 23 39 32 27 37 5 47 40 14 39 36 0 0 39 11 15 1 54 56 52 135 -4 38 18 32 40 4 41 37 37 55 40 46 55 37 0 0 39 43 17 1 55 2 53 137 -3 38 50 33 40 36 46 38 9 54 41 19 1 38 0 0 40 15 9 1 55 8 53 139 -2 39 22 23 41 8 39 38 41 43 41 50 55 39 0 0 40 46 49 1 55 14 53 141 -1 39 54 3 41 40 20 39 13 22 42 22 37 40 0 0 41 18 17 1 55 20 53 143 0 40 25 30 42 11 48 39 44 49 42 54 5 Uncertainty in time = +/- 3 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 0604-01147-1 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 00 50 09.3221 DE: +09 25 00.297 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .029, .030 ) * V mag [mag]: 12.6 * B mag [mag]: 12.4 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (419) Aurelia approx. diameter [km]: 129 approx. diameter ["]: .085 distance from Earth [AU]: 2.09300 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1033 number of rejected observations: 131 time covered by the observations: 1900 Jul 21 - 2008 Mar 03 1 sigma uncertainty ellipse (major, minor, PA): 0.019, 0.012, 72° remarks: * orbital elements for (419) Aurelia : Mean anomaly = 48.29403438 deg Arg. of pericenter = 44.63977940 deg Long. of node = 229.30666260 deg Inclination = 3.92453528 deg Eccentricity = 0.25317857 Semimajor axis = 2.59576943 AU Perihelion dist = 1.93857624 AU Mag: H = 8.46, G = 0.15 Epoch of elements : MJD 55016.08000000 TDT (2009 Jul 04.080) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jul 4 419 Aurelia 1h 55.5m UT 12.6 0 50 9.322 9 25 0.30TYC 0604-01147-1 12.4 13.0 129 7.3 2.093 2.574 17.72 61.4470 9.412 152.23 22.87 1.9249 -0.25266 0.54396 9.06843 4.21747 -0.00487 -0.00204 2000 46.8611582009 628.00000 44.639779229.306663 3.9245350.25317857 2.5957694 1.9385762 8.4 5.00.15 RATE 2.3567040 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.035 0.033 85 1.39 0.033 0 54545.5020090704_1147-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 10:13 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org