IOTA/IOTA-ES occultation update for (434) Hungaria / TYC 5963-01049-1 event on 2008 Jan 01, 12:22 UT Visible from Philippines Summary ------- On 2008 Jan 01 UT, the 11 km diameter asteroid (434) Hungaria will occult a 10.1 mag star in the constellation Canis Major for observers along a path across Philippines. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.0 mag to 14.1 mag (the magnitude of the asteroid) for at most 1.1 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: 31 * date and approx. time of event: 2008 Jan 01, 12:12 - 2008 Jan 01, 12:32 UT * magnitude of target star: 10.1 * magnitude drop [mag]: 4.0 * estimated maximum duration [s]: 1.1 * Moon: 38 % sunlit, 91° distance * Sun: 141° distance * rough path description: Philippines The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 2.17 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .033 +/- .026) * 1 sigma uncertainty ellipse (major, minor, PA): ( .033", .026", 89° ) * approx speed of asteroid's shadow [km/s]: 10.3521 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5963-01049-1 by 434 Hungaria on 2008 Jan 01 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 93 0 0 19 21 30 12 32 42 0 107 -17 19 24 40 19 18 21 .. .. .. 19 4 38 94 0 0 19 4 10 12 32 42 1 107 -17 19 7 20 19 1 0 19 21 4 18 47 17 95 0 0 18 46 38 12 32 42 2 107 -18 18 49 48 18 43 28 19 3 33 18 29 44 96 0 0 18 28 54 12 32 42 3 108 -19 18 32 4 18 25 44 18 45 50 18 11 59 97 0 0 18 10 59 12 32 41 4 108 -20 18 14 9 18 7 49 18 27 56 17 54 3 98 0 0 17 52 53 12 32 40 5 108 -21 17 56 3 17 49 42 18 9 50 17 35 56 99 0 0 17 34 36 12 32 39 6 109 -21 17 37 47 17 31 25 17 51 34 17 17 39 100 0 0 17 16 9 12 32 38 7 109 -22 17 19 20 17 12 58 17 33 8 16 59 11 101 0 0 16 57 32 12 32 36 8 109 -23 17 0 43 16 54 21 17 14 31 16 40 33 102 0 0 16 38 45 12 32 35 9 110 -24 16 41 56 16 35 34 16 55 45 16 21 45 103 0 0 16 19 49 12 32 33 10 110 -25 16 23 0 16 16 38 16 36 50 16 2 49 104 0 0 16 0 44 12 32 31 11 110 -25 16 3 56 15 57 33 16 17 46 15 43 43 105 0 0 15 41 31 12 32 29 12 110 -26 15 44 42 15 38 20 15 58 33 15 24 30 106 0 0 15 22 10 12 32 26 13 111 -27 15 25 21 15 18 58 15 39 13 15 5 8 107 0 0 15 2 41 12 32 24 14 111 -28 15 5 52 14 59 29 15 19 44 14 45 38 108 0 0 14 43 5 12 32 21 15 111 -29 14 46 16 14 39 53 15 0 8 14 26 2 109 0 0 14 23 21 12 32 18 16 112 -29 14 26 33 14 20 10 14 40 26 14 6 18 110 0 0 14 3 32 12 32 15 17 112 -30 14 6 44 14 0 20 14 20 37 13 46 28 111 0 0 13 43 36 12 32 12 18 112 -31 13 46 48 13 40 24 14 0 41 13 26 32 112 0 0 13 23 35 12 32 8 19 112 -32 13 26 47 13 20 23 13 40 41 13 6 31 113 0 0 13 3 29 12 32 4 20 113 -33 13 6 41 13 0 17 13 20 35 12 46 24 114 0 0 12 43 18 12 32 1 21 113 -33 12 46 30 12 40 6 13 0 24 12 26 12 115 0 0 12 23 2 12 31 56 22 113 -34 12 26 14 12 19 50 12 40 8 12 5 57 116 0 0 12 2 43 12 31 52 23 113 -35 12 5 55 11 59 30 12 19 49 11 45 37 117 0 0 11 42 20 12 31 48 24 113 -36 11 45 32 11 39 8 11 59 26 11 25 14 118 0 0 11 21 54 12 31 43 25 114 -37 11 25 6 11 18 42 11 39 0 11 4 48 119 0 0 11 1 25 12 31 38 26 114 -37 11 4 37 10 58 13 11 18 32 10 44 19 120 0 0 10 40 54 12 31 33 27 114 -38 10 44 7 10 37 42 10 58 1 10 23 48 121 0 0 10 20 22 12 31 28 28 114 -39 10 23 34 10 17 10 10 37 29 10 3 16 122 0 0 9 59 48 12 31 23 29 115 -40 10 3 0 9 56 36 10 16 55 9 42 42 123 0 0 9 39 14 12 31 17 30 115 -40 9 42 26 9 36 1 9 56 20 9 22 8 124 0 0 9 18 39 12 31 12 31 115 -41 9 21 51 9 15 26 9 35 45 9 1 33 125 0 0 8 58 4 12 31 6 32 115 -42 9 1 16 8 54 52 9 15 10 8 40 58 126 0 0 8 37 29 12 31 0 33 115 -43 8 40 41 8 34 17 8 54 36 8 20 24 127 0 0 8 16 56 12 30 54 34 116 -43 8 20 8 8 13 44 8 34 2 7 59 50 128 0 0 7 56 23 12 30 47 35 116 -44 7 59 35 7 53 11 8 13 29 7 39 18 129 0 0 7 35 53 12 30 41 36 116 -45 7 39 5 7 32 41 7 52 59 7 18 48 130 0 0 7 15 25 12 30 34 37 116 -46 7 18 37 7 12 13 7 32 30 6 58 20 131 0 0 6 54 59 12 30 27 38 117 -46 6 58 11 6 51 47 7 12 4 6 37 55 132 0 0 6 34 36 12 30 20 39 117 -47 6 37 48 6 31 25 6 51 41 6 17 33 133 0 0 6 14 17 12 30 13 40 117 -48 6 17 29 6 11 6 6 31 22 5 57 14 134 0 0 5 54 2 12 30 6 41 117 -48 5 57 14 5 50 51 6 11 6 5 36 59 135 0 0 5 33 51 12 29 58 42 117 -49 5 37 3 5 30 40 5 50 54 5 16 49 136 0 0 5 13 45 12 29 51 43 118 -50 5 16 57 5 10 34 5 30 48 4 56 43 137 0 0 4 53 44 12 29 43 44 118 -50 4 56 55 4 50 33 5 10 46 4 36 43 138 0 0 4 33 49 12 29 35 45 118 -51 4 37 0 4 30 37 4 50 50 4 16 48 139 0 0 4 13 59 12 29 27 46 118 -52 4 17 10 4 10 48 4 31 0 3 56 59 140 0 0 3 54 16 12 29 19 47 119 -52 3 57 27 3 51 5 4 11 16 3 37 16 141 0 0 3 34 39 12 29 11 48 119 -53 3 37 50 3 31 28 3 51 39 3 17 40 142 0 0 3 15 10 12 29 3 49 119 -54 3 18 20 3 11 59 3 32 9 2 58 11 143 0 0 2 55 48 12 28 54 50 119 -54 2 58 58 2 52 37 3 12 46 2 38 50 144 0 0 2 36 33 12 28 46 51 120 -55 2 39 44 2 33 23 2 53 31 2 19 37 145 0 0 2 17 27 12 28 37 52 120 -55 2 20 38 2 14 17 2 34 24 2 0 31 146 0 0 1 58 30 12 28 28 53 120 -56 2 1 40 1 55 20 2 15 26 1 41 35 147 0 0 1 39 41 12 28 19 54 121 -56 1 42 51 1 36 31 1 56 37 1 22 47 148 0 0 1 21 2 12 28 10 55 121 -57 1 24 12 1 17 52 1 37 57 1 4 8 149 0 0 1 2 32 12 28 1 56 121 -57 1 5 42 0 59 22 1 19 26 0 45 39 150 0 0 0 44 12 12 27 52 57 122 -58 0 47 22 0 41 3 1 1 5 0 27 20 151 0 0 0 26 3 12 27 43 58 122 -58 0 29 12 0 22 53 0 42 55 0 9 11 152 0 0 0 8 3 12 27 33 59 123 -59 0 11 13 0 4 54 0 24 55 - 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Data for the target star ------------------------ * name: TYC 5963-01049-1 * constellation : Canis Major * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 03 24.7257 DE: -15 50 30.314 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .020, .018 ) * V mag [mag]: 10.1 * B mag [mag]: 11.1 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (434) Hungaria approx. diameter [km]: 11 approx. diameter ["]: .012 distance from Earth [AU]: 1.22400 * orbital information: orbit source: Preston date of fit: 2007 Dec 18 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 850 number of rejected observations: 61 time covered by the observations: 1900 Feb 21 - 2007 Nov 25 1 sigma uncertainty ellipse (major, minor, PA): 0.026, 0.018, 88° remarks: * orbital elements for (434) Hungaria : Mean anomaly = 161.80583675 deg Arg. of pericenter = 123.89356628 deg Long. of node = 175.38821324 deg Inclination = 22.50376809 deg Eccentricity = 0.07361864 Semimajor axis = 1.94441050 AU Perihelion dist = 1.80126565 AU Mag: H = 11.22, G = 0.15 Epoch of elements : MJD 54466.51600000 TDT (2008 Jan 01.516) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Jan 01 434 Hungaria 12h 22.6m UT 10.1 7 3 24.726-15 50 30.31TYC 5963-01049-1 11.1 14.1 11 1.1 1.224 -2.856 8.06 -180.326 -15.844 -4.81 -23.03 12.3761 .03025 .15365 -5.73496 1.11840 -0.00044 0.00350 2000 159.43717420071226.00000123.893566175.388213 22.5037680.073618641.944410501.8012656511.25 0.15 RATE 3.6351480 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.033 0.026 88.7 3.170 0.027 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Dec 19, 03:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org