IOTA/IOTA-ES occultation update for (434) Hungaria / TYC 0623-00864-1 event on 2012 Aug 12, 23:48 UT Visible from Russia, N Europe Summary ------- On 2012 Aug 12 UT, the 19 km diameter asteroid (434) Hungaria will occult a 10.1 mag star in the constellation Pisces for observers along a path across Russia, N Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.3 mag to 14.4 mag (the magnitude of the asteroid) for at most 1.6 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 44 * date and approx. time of event: 2012 Aug 12, 23:40 - 2012 Aug 12, 23:47 UT * geocentric midpoint of event [JD]: 2456152.49197917 * magnitude of target star: 10.1 * magnitude drop [mag]: 4.3 * estimated maximum duration [s]: 1.6 * Moon: 21 % sunlit, 54° distance * Sun: 109° distance * rough path description: Russia, N Europe The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 1.50 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .035 +/- .030) * 1 sigma uncertainty ellipse (major, minor, PA): ( .035", .030", 91° ) * approx speed of asteroid's shadow [km/s]: 11.8411 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0623-00864-1 by 434 Hungaria on 2012 Aug 12 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 - 30 0 0 57 54 5 23 40 27 0 74 -12 57 48 6 58 0 4 57 30 10 58 18 4 - 29 0 0 58 3 26 23 40 27 1 74 -12 57 57 28 58 9 25 57 39 36 58 27 21 - 28 0 0 58 12 25 23 40 27 2 75 -12 58 6 28 58 18 22 57 48 39 58 36 16 - 27 0 0 58 21 1 23 40 27 2 76 -12 58 15 5 58 26 57 57 57 19 58 44 48 - 26 0 0 58 29 15 23 40 27 3 77 -12 58 23 20 58 35 10 58 5 37 58 52 57 - 25 0 0 58 37 6 23 40 28 3 78 -13 58 31 12 58 43 0 58 13 32 59 0 45 - 24 0 0 58 44 35 23 40 28 4 79 -13 58 38 42 58 50 29 58 21 5 59 8 10 - 23 0 0 58 51 43 23 40 29 4 80 -13 58 45 51 58 57 35 58 28 16 59 15 14 - 22 0 0 58 58 29 23 40 29 5 80 -13 58 52 37 59 4 20 58 35 5 59 21 57 - 21 0 0 59 4 53 23 40 29 5 81 -13 58 59 3 59 10 44 58 41 33 59 28 18 - 20 0 0 59 10 57 23 40 30 6 82 -13 59 5 7 59 16 47 58 47 39 59 34 19 - 19 0 0 59 16 39 23 40 31 6 83 -13 59 10 50 59 22 28 58 53 24 59 39 58 - 18 0 0 59 22 0 23 40 31 7 84 -14 59 16 12 59 27 49 58 58 48 59 45 17 - 17 0 0 59 27 1 23 40 32 7 85 -14 59 21 13 59 32 49 59 3 52 59 50 15 - 16 0 0 59 31 41 23 40 33 8 86 -14 59 25 54 59 37 28 59 8 34 59 54 53 - 15 0 0 59 36 1 23 40 33 8 86 -14 59 30 14 59 41 48 59 12 56 59 59 10 - 14 0 0 59 40 0 23 40 34 9 87 -14 59 34 14 59 45 46 59 16 58 60 3 7 - 13 0 0 59 43 39 23 40 35 9 88 -14 59 37 54 59 49 25 59 20 39 60 6 44 - 12 0 0 59 46 58 23 40 36 10 89 -14 59 41 13 59 52 44 59 24 0 60 10 2 - 11 0 0 59 49 57 23 40 37 10 90 -14 59 44 13 59 55 43 59 27 0 60 12 59 - 10 0 0 59 52 37 23 40 38 11 91 -15 59 46 52 59 58 21 59 29 41 60 15 37 - 9 0 0 59 54 56 23 40 39 11 92 -15 59 49 12 60 0 40 59 32 1 60 17 55 - 8 0 0 59 56 56 23 40 40 12 93 -15 59 51 12 60 2 40 59 34 2 60 19 54 - 7 0 0 59 58 35 23 40 41 12 93 -15 59 52 52 60 4 19 59 35 43 60 21 32 - 6 0 0 59 59 56 23 40 42 13 94 -15 59 54 12 60 5 39 59 37 4 60 22 52 - 5 0 0 60 0 56 23 40 44 13 95 -15 59 55 13 60 6 40 59 38 5 60 23 52 - 4 0 0 60 1 37 23 40 45 14 96 -15 59 55 54 60 7 20 59 38 47 60 24 32 - 3 0 0 60 1 58 23 40 46 14 97 -15 59 56 15 60 7 42 59 39 8 60 24 53 - 2 0 0 60 2 0 23 40 47 15 98 -15 59 56 17 60 7 43 59 39 10 60 24 55 - 1 0 0 60 1 42 23 40 49 15 99 -15 59 55 59 60 7 25 59 38 52 60 24 37 0 0 0 60 1 5 23 40 50 16 100 -15 59 55 22 60 6 48 59 38 14 60 23 59 1 0 0 60 0 7 23 40 52 16 101 -15 59 54 24 60 5 51 59 37 17 60 23 3 2 0 0 59 58 50 23 40 53 17 101 -15 59 53 7 60 4 34 59 35 59 60 21 46 3 0 0 59 57 14 23 40 55 17 102 -16 59 51 30 60 2 57 59 34 22 60 20 10 4 0 0 59 55 17 23 40 56 18 103 -16 59 49 34 60 1 1 59 32 24 60 18 14 5 0 0 59 53 1 23 40 58 18 104 -16 59 47 17 59 58 45 59 30 7 60 15 59 6 0 0 59 50 24 23 41 0 19 105 -16 59 44 40 59 56 9 59 27 29 60 13 24 7 0 0 59 47 28 23 41 2 19 106 -16 59 41 43 59 53 12 59 24 31 60 10 29 8 0 0 59 44 11 23 41 3 20 107 -16 59 38 26 59 49 56 59 21 13 60 7 13 9 0 0 59 40 34 23 41 5 20 108 -16 59 34 49 59 46 19 59 17 34 60 3 38 10 0 0 59 36 36 23 41 7 21 109 -16 59 30 51 59 42 22 59 13 35 59 59 42 11 0 0 59 32 18 23 41 9 21 110 -16 59 26 32 59 38 5 59 9 15 59 55 26 12 0 0 59 27 39 23 41 11 22 110 -16 59 21 53 59 33 27 59 4 34 59 50 50 13 0 0 59 22 40 23 41 13 23 111 -16 59 16 52 59 28 27 58 59 32 59 45 52 14 0 0 59 17 19 23 41 15 23 112 -16 59 11 31 59 23 7 58 54 9 59 40 34 15 0 0 59 11 37 23 41 18 24 113 -16 59 5 48 59 17 26 58 48 24 59 34 55 16 0 0 59 5 33 23 41 20 24 114 -16 58 59 44 59 11 23 58 42 18 59 28 54 17 0 0 58 59 8 23 41 22 25 115 -16 58 53 18 59 4 59 58 35 49 59 22 32 18 0 0 58 52 21 23 41 24 25 116 -16 58 46 30 58 58 12 58 28 59 59 15 48 19 0 0 58 45 12 23 41 27 26 117 -16 58 39 20 58 51 4 58 21 47 59 8 42 20 0 0 58 37 40 23 41 29 26 118 -16 58 31 48 58 43 33 58 14 12 59 1 14 21 0 0 58 29 46 23 41 32 27 119 -16 58 23 53 58 35 40 58 6 14 58 53 23 22 0 0 58 21 29 23 41 35 27 120 -16 58 15 35 58 27 24 57 57 53 58 45 10 23 0 0 58 12 49 23 41 37 28 121 -16 58 6 53 58 18 45 57 49 9 58 36 34 24 0 0 58 3 45 23 41 40 28 121 -16 57 57 49 58 9 42 57 40 1 58 27 34 25 0 0 57 54 18 23 41 43 29 122 -16 57 48 20 58 0 16 57 30 29 58 18 11 26 0 0 57 44 26 23 41 46 29 123 -16 57 38 28 57 50 25 57 20 33 58 8 24 27 0 0 57 34 10 23 41 49 30 124 -16 57 28 11 57 40 11 57 10 13 57 58 13 28 0 0 57 23 30 23 41 52 30 125 -16 57 17 29 57 29 31 56 59 28 57 47 37 29 0 0 57 12 24 23 41 55 31 126 -16 57 6 22 57 18 27 56 48 17 57 36 37 30 0 0 57 0 53 23 41 58 32 127 -16 56 54 50 57 6 57 56 36 41 57 25 11 31 0 0 56 48 57 23 42 1 32 128 -16 56 42 52 56 55 2 56 24 39 57 13 19 32 0 0 56 36 34 23 42 5 33 129 -16 56 30 28 56 42 40 56 12 11 57 1 2 33 0 0 56 23 44 23 42 8 33 130 -16 56 17 37 56 29 52 55 59 16 56 48 18 34 0 0 56 10 28 23 42 11 34 131 -15 56 4 19 56 16 37 55 45 54 56 35 7 35 0 0 55 56 45 23 42 15 34 132 -15 55 50 34 56 2 55 55 32 5 56 21 30 36 0 0 55 42 33 23 42 19 35 133 -15 55 36 22 55 48 46 55 17 48 56 7 24 37 0 0 55 27 54 23 42 23 36 134 -15 55 21 41 55 34 8 55 3 3 55 52 51 38 0 0 55 12 46 23 42 26 36 135 -15 55 6 31 55 19 1 54 47 49 55 37 49 39 0 0 54 57 9 23 42 30 37 136 -15 54 50 53 55 3 26 54 32 6 55 22 19 40 0 0 54 41 3 23 42 35 37 137 -15 54 34 45 54 47 22 54 15 53 55 6 19 41 0 0 54 24 27 23 42 39 38 138 -15 54 18 8 54 30 47 53 59 11 54 49 50 42 0 0 54 7 21 23 42 43 39 139 -15 54 1 0 54 13 43 53 41 58 54 32 50 43 0 0 53 49 44 23 42 47 39 140 -15 53 43 21 53 56 8 53 24 14 54 15 20 44 0 0 53 31 36 23 42 52 40 141 -14 53 25 11 53 38 1 53 6 0 53 57 19 45 0 0 53 12 57 23 42 57 40 142 -14 53 6 30 53 19 23 52 47 13 53 38 46 46 0 0 52 53 45 23 43 1 41 143 -14 52 47 17 53 0 14 52 27 54 53 19 42 47 0 0 52 34 1 23 43 6 42 144 -14 52 27 31 52 40 31 52 8 3 53 0 5 48 0 0 52 13 44 23 43 11 42 145 -14 52 7 12 52 20 16 51 47 39 52 39 55 49 0 0 51 52 54 23 43 16 43 147 -14 51 46 20 51 59 28 51 26 42 52 19 12 50 0 0 51 31 30 23 43 21 44 148 -13 51 24 55 51 38 6 51 5 11 51 57 56 51 0 0 51 9 32 23 43 27 44 149 -13 51 2 55 51 16 10 50 43 6 51 36 5 52 0 0 50 47 0 23 43 32 45 150 -13 50 40 20 50 53 39 50 20 26 51 13 40 53 0 0 50 23 52 23 43 38 46 151 -13 50 17 11 50 30 34 49 57 11 50 50 40 54 0 0 50 0 10 23 43 44 46 152 -13 49 53 27 50 6 53 49 33 21 50 27 5 55 0 0 49 35 51 23 43 50 47 154 -12 49 29 7 49 42 36 49 8 55 50 2 54 56 0 0 49 10 57 23 43 56 48 155 -12 49 4 11 49 17 44 48 43 54 49 38 8 57 0 0 48 45 27 23 44 2 48 156 -12 48 38 38 48 52 16 48 18 16 49 12 45 58 0 0 48 19 20 23 44 8 49 157 -12 48 12 30 48 26 10 47 52 2 48 46 45 59 0 0 47 52 36 23 44 15 50 159 -11 47 45 44 47 59 29 47 25 11 48 20 9 60 0 0 47 25 16 23 44 21 50 160 -11 47 18 22 47 32 10 46 57 43 47 52 56 61 0 0 46 57 18 23 44 28 51 161 -11 46 50 22 47 4 14 46 29 38 47 25 5 62 0 0 46 28 43 23 44 35 52 163 -11 46 21 45 46 35 41 46 0 56 46 56 37 63 0 0 45 59 30 23 44 42 52 164 -10 45 52 31 46 6 30 45 31 37 46 27 32 64 0 0 45 29 41 23 44 50 53 166 -10 45 22 40 45 36 42 45 1 40 45 57 49 65 0 0 44 59 13 23 44 57 54 167 -10 44 52 11 45 6 17 44 31 6 45 27 29 66 0 0 44 28 9 23 45 5 54 169 -9 44 21 5 44 35 14 43 59 55 44 56 31 67 0 0 43 56 27 23 45 12 55 170 -9 43 49 21 44 3 33 43 28 6 44 24 56 68 0 0 43 24 8 23 45 20 55 172 -8 43 17 1 43 31 16 42 55 41 43 52 43 69 0 0 42 51 12 23 45 29 56 174 -8 42 44 3 42 58 22 42 22 39 43 19 54 70 0 0 42 17 40 23 45 37 57 176 -8 42 10 30 42 24 51 41 49 1 42 46 28 71 0 0 41 43 32 23 45 45 57 177 -7 41 36 20 41 50 44 41 14 47 42 12 25 72 0 0 41 8 47 23 45 54 58 179 -7 41 1 34 41 16 1 40 39 57 41 37 46 73 0 0 40 33 28 23 46 3 59 181 -6 40 26 13 40 40 43 40 4 32 41 2 32 74 0 0 39 57 34 23 46 11 59 183 -6 39 50 18 40 4 50 39 28 33 40 26 43 75 0 0 39 21 5 23 46 21 60 185 -5 39 13 48 39 28 23 38 52 0 39 50 19 76 0 0 38 44 4 23 46 30 60 188 -5 38 36 46 38 51 23 38 14 54 39 13 22 77 0 0 38 6 30 23 46 39 61 190 -4 37 59 11 38 13 50 37 37 16 38 35 52 78 0 0 37 28 24 23 46 49 61 192 -4 37 21 4 37 35 45 36 59 7 37 57 51 79 0 0 36 49 48 23 46 58 62 195 -3 36 42 27 36 57 10 36 20 28 37 19 18 80 0 0 36 10 43 23 47 8 62 197 -3 36 3 21 36 18 5 35 41 19 36 40 16 81 0 0 35 31 9 23 47 18 62 200 -2 35 23 47 35 38 32 35 1 43 36 0 45 82 0 0 34 51 8 23 47 28 63 202 -2 34 43 45 34 58 32 34 21 39 35 20 46 83 0 0 34 10 41 23 47 38 63 205 -1 34 3 18 34 18 6 33 41 10 34 40 22 84 0 0 33 29 50 23 47 49 63 207 0 33 22 26 33 37 15 33 0 18 33 59 32 Uncertainty in time = +/- 3 secs Prediction of 2012 Apr 8.0 Data for the target star ------------------------ * name: TYC 0623-00864-1 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 02 01 57.7616 DE: +08 59 50.691 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .028, .028 ) * V mag [mag]: 10.1 * B mag [mag]: 10.7 * Apparent position with proper motion RA(deg): 30.6641535771 DE(deg): 9.0597388777 * Equation of equinoxes (radians) : 0.000072922956865 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (434) Hungaria approx. diameter [km]: 19 approx. diameter ["]: .021 distance from Earth [AU]: 1.27700 * orbital information: orbit source: Preston date of fit: 2012 Apr 08 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1099 number of rejected observations: 61 time covered by the observations: 1900 Feb 21 - 2011 May 03 1 sigma uncertainty ellipse (major, minor, PA): 0.021, 0.011, 94° remarks: * orbital elements for (434) Hungaria : Mean anomaly = 54.72295657 deg Arg. of pericenter = 123.75518936 deg Long. of node = 175.37238359 deg Inclination = 22.50935609 deg Eccentricity = 0.07349085 Semimajor axis = 1.94417096 AU Perihelion dist = 1.80129218 AU Mag: H = 11.21, G = 0.15 Epoch of elements : MJD 56151.99200000 TDT (2012 Aug 12.992) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Aug 12 434 Hungaria 23h 48.4m UT 10.1 2 1 57.762 8 59 50.69TYC 0623-00864-1 10.7 14.4 19 1.6 1.277 2.623 -24.70 71.5515 9.005 -175.89 14.61 23.8075 0.23531 0.37525 5.64303 -3.58115 -0.00444 -0.00153 2000 53.9987022012 811.00000123.755189175.372384 22.5093560.07349085 1.9441710 1.801292211.2 5.00.15 RATE 3.6358200 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.035 0.030 91 2.50 0.031 0 0-4 1 056025.0020120812_0864-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Jun 21, 02:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org