IOTA/IOTA-ES occultation update for (526) Jena / TYC 1252-00642-1 event on 2012 Sep 09, 12:23 UT Visible from SW Canada, NW USA Summary ------- On 2012 Sep 09 UT, the 57 km diameter asteroid (526) Jena will occult a 11.5 mag star in the constellation Taurus for observers along a path across SW Canada, NW USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.3 mag to 15.7 mag (the magnitude of the asteroid) for at most 8.2 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: 64 * date and approx. time of event: 2012 Sep 09, 12:10 - 2012 Sep 09, 12:26 UT * geocentric midpoint of event [JD]: 2456180.0166 * magnitude of target star: 11.5 * magnitude drop [mag]: 4.3 * estimated maximum duration [s]: 8.2 * Moon: 41 % sunlit, 29° distance * Sun: 109° distance * rough path description: SW Canada, NW USA The occultation path -------------------- * approximate projected width [km]: 67 * 1 sigma uncertainty interval [path widths]: +/- 0.95 * 1 sigma uncertainty interval [seconds]: +/- 8.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .032 +/- .029) * 1 sigma uncertainty ellipse (major, minor, PA): ( .032", .029", 83° ) * approx speed of asteroid's shadow [km/s]: 6.9856 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1252-00642-1 by 526 Jena on 2012 Sep 9 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 147 0 0 26 56 51 12 10 57 1 71 -47 26 37 25 27 16 20 .. .. .. 27 53 34 148 0 0 27 16 6 12 10 58 2 71 -48 26 56 40 27 35 37 .. .. .. 28 12 53 149 0 0 27 35 28 12 10 58 3 72 -48 27 16 1 27 55 0 .. .. .. 28 32 18 150 0 0 27 54 55 12 10 59 3 72 -48 27 35 27 28 14 28 .. .. .. 28 51 48 151 0 0 28 14 27 12 11 1 4 73 -49 27 54 58 28 34 1 27 18 8 29 11 23 152 0 0 28 34 4 12 11 2 5 73 -49 28 14 34 28 53 38 27 37 42 29 31 2 153 0 0 28 53 44 12 11 4 6 74 -49 28 34 13 29 13 20 27 57 20 29 50 46 154 0 0 29 13 28 12 11 6 7 74 -50 28 53 57 29 33 5 28 17 2 30 10 32 155 0 0 29 33 16 12 11 8 8 75 -50 29 13 43 29 52 53 28 36 47 30 30 22 156 0 0 29 53 5 12 11 11 9 75 -50 29 33 32 30 12 43 28 56 35 30 50 13 157 0 0 30 12 57 12 11 14 10 76 -50 29 53 23 30 32 36 29 16 25 31 10 7 158 0 0 30 32 51 12 11 17 11 76 -50 30 13 16 30 52 30 29 36 16 31 30 2 159 0 0 30 52 45 12 11 21 12 77 -50 30 33 10 31 12 24 29 56 9 31 49 58 160 0 0 31 12 40 12 11 24 13 77 -51 30 53 4 31 32 20 30 16 3 32 9 54 161 0 0 31 32 35 12 11 28 14 78 -51 31 12 59 31 52 15 30 35 56 32 29 50 162 0 0 31 52 29 12 11 33 15 78 -51 31 32 53 32 12 10 30 55 50 32 49 46 163 0 0 32 12 23 12 11 37 16 79 -51 31 52 46 32 32 4 31 15 43 33 9 40 164 0 0 32 32 15 12 11 42 16 80 -51 32 12 38 32 51 56 31 35 34 33 29 33 165 0 0 32 52 5 12 11 47 17 80 -51 32 32 28 33 11 46 31 55 24 33 49 23 166 0 0 33 11 52 12 11 52 18 81 -51 32 52 15 33 31 34 32 15 11 34 9 11 167 0 0 33 31 37 12 11 58 19 81 -51 33 12 0 33 51 18 32 34 55 34 28 55 168 0 0 33 51 18 12 12 4 20 82 -50 33 31 41 34 10 59 32 54 37 34 48 36 169 0 0 34 10 55 12 12 10 21 83 -50 33 51 18 34 30 36 33 14 14 35 8 13 170 0 0 34 30 28 12 12 16 22 83 -50 34 10 51 34 50 9 33 33 47 35 27 45 171 0 0 34 49 55 12 12 22 23 84 -50 34 30 19 35 9 36 33 53 16 35 47 12 172 0 0 35 9 18 12 12 29 24 85 -50 34 49 42 35 28 58 34 12 39 36 6 33 173 0 0 35 28 34 12 12 36 24 85 -49 35 8 59 35 48 14 34 31 57 36 25 49 174 0 0 35 47 44 12 12 43 25 86 -49 35 28 9 36 7 24 34 51 8 36 44 57 175 0 0 36 6 48 12 12 50 26 87 -49 35 47 13 36 26 27 35 10 13 37 3 59 176 0 0 36 25 44 12 12 57 27 88 -49 36 6 10 36 45 22 35 29 11 37 22 54 177 0 0 36 44 33 12 13 5 28 88 -48 36 24 59 37 4 10 35 48 2 37 41 40 178 0 0 37 3 13 12 13 13 29 89 -48 36 43 41 37 22 50 36 6 44 38 0 19 179 0 0 37 21 45 12 13 21 29 90 -48 37 2 13 37 41 21 36 25 19 38 18 48 180 0 0 37 40 8 12 13 29 30 91 -47 37 20 38 37 59 44 36 43 44 38 37 9 -179 0 0 37 58 22 12 13 37 31 92 -47 37 38 52 38 17 57 37 2 1 38 55 20 -178 0 0 38 16 27 12 13 46 32 92 -46 37 56 58 38 36 0 37 20 8 39 13 22 -177 0 0 38 34 21 12 13 55 33 93 -46 38 14 53 38 53 53 37 38 5 39 31 13 -176 0 0 38 52 5 12 14 3 34 94 -46 38 32 38 39 11 36 37 55 52 39 48 54 -175 0 0 39 9 38 12 14 12 34 95 -45 38 50 12 39 29 8 38 13 29 40 6 23 -174 0 0 39 27 0 12 14 22 35 96 -45 39 7 36 39 46 29 38 30 54 40 23 42 -173 0 0 39 44 11 12 14 31 36 97 -44 39 24 48 40 3 39 38 48 9 40 40 49 -172 0 0 40 1 10 12 14 40 37 98 -44 39 41 48 40 20 36 39 5 11 40 57 44 -171 0 0 40 17 57 12 14 50 37 99 -43 39 58 36 40 37 22 39 22 2 41 14 27 -170 0 0 40 34 32 12 14 59 38 100 -43 40 15 13 40 53 55 39 38 41 41 30 58 -169 0 0 40 50 54 12 15 9 39 101 -42 40 31 36 41 10 16 39 55 7 41 47 16 -168 0 0 41 7 3 12 15 19 40 102 -42 40 47 47 41 26 24 40 11 21 42 3 21 -167 0 0 41 23 0 12 15 29 40 103 -41 41 3 45 41 42 19 40 27 21 42 19 13 -166 0 0 41 38 43 12 15 39 41 104 -40 41 19 29 41 58 0 40 43 9 42 34 51 -165 0 0 41 54 12 12 15 49 42 105 -40 41 35 0 42 13 28 40 58 42 42 50 16 -164 0 0 42 9 27 12 15 59 42 106 -39 41 50 17 42 28 42 41 14 2 43 5 27 -163 0 0 42 24 29 12 16 9 43 107 -39 42 5 20 42 43 42 41 29 9 43 20 24 -162 0 0 42 39 16 12 16 20 44 108 -38 42 20 9 42 58 27 41 44 1 43 35 6 -161 0 0 42 53 49 12 16 30 44 109 -38 42 34 44 43 12 59 41 58 38 43 49 34 -160 0 0 43 8 8 12 16 41 45 111 -37 42 49 4 43 27 15 42 13 2 44 3 48 -159 0 0 43 22 11 12 16 51 46 112 -36 43 3 9 43 41 17 42 27 10 44 17 46 -158 0 0 43 36 0 12 17 2 46 113 -36 43 17 0 43 55 4 42 41 4 44 31 30 -157 0 0 43 49 34 12 17 13 47 114 -35 43 30 35 44 8 36 42 54 43 44 44 59 -156 0 0 44 2 52 12 17 24 47 116 -34 43 43 56 44 21 53 43 8 6 44 58 12 -155 0 0 44 15 56 12 17 34 48 117 -34 43 57 1 44 34 55 43 21 14 45 11 10 -154 0 0 44 28 44 12 17 45 48 118 -33 44 9 50 44 47 41 43 34 7 45 23 53 -153 0 0 44 41 16 12 17 56 49 120 -33 44 22 24 45 0 12 43 46 45 45 36 20 -152 0 0 44 53 33 12 18 7 50 121 -32 44 34 43 45 12 27 43 59 6 45 48 32 -151 0 0 45 5 34 12 18 18 50 122 -31 44 46 46 45 24 26 44 11 13 46 0 28 -150 0 0 45 17 19 12 18 29 51 124 -31 44 58 33 45 36 10 44 23 3 46 12 8 -149 0 0 45 28 49 12 18 40 51 125 -30 45 10 4 45 47 37 44 34 37 46 23 33 -148 0 0 45 40 2 12 18 51 52 127 -29 45 21 19 45 58 49 44 45 56 46 34 41 -147 0 0 45 51 0 12 19 2 52 128 -29 45 32 18 46 9 45 44 56 58 46 45 34 -146 0 0 46 1 41 12 19 13 52 130 -28 45 43 2 46 20 25 45 7 44 46 56 10 -145 0 0 46 12 7 12 19 24 53 131 -27 45 53 29 46 30 49 45 18 14 47 6 31 -144 0 0 46 22 16 12 19 36 53 133 -27 46 3 40 46 40 56 45 28 28 47 16 35 -143 0 0 46 32 9 12 19 47 54 134 -26 46 13 34 46 50 48 45 38 26 47 26 23 -142 0 0 46 41 46 12 19 58 54 136 -26 46 23 13 47 0 23 45 48 8 47 35 56 -141 0 0 46 51 7 12 20 9 54 138 -25 46 32 35 47 9 42 45 57 33 47 45 12 -140 0 0 47 0 11 12 20 20 55 139 -24 46 41 41 47 18 45 46 6 42 47 54 11 -139 0 0 47 8 59 12 20 32 55 141 -24 46 50 30 47 27 31 46 15 34 48 2 55 -138 0 0 47 17 31 12 20 43 56 143 -23 46 59 4 47 36 2 46 24 10 48 11 23 -137 0 0 47 25 46 12 20 54 56 145 -22 47 7 21 47 44 16 46 32 30 48 19 34 -136 0 0 47 33 46 12 21 5 56 146 -22 47 15 21 47 52 13 46 40 33 48 27 29 -135 0 0 47 41 28 12 21 16 56 148 -21 47 23 6 47 59 55 46 48 20 48 35 8 -134 0 0 47 48 55 12 21 27 57 150 -20 47 30 34 48 7 20 46 55 50 48 42 30 -133 0 0 47 56 5 12 21 39 57 152 -20 47 37 45 48 14 29 47 3 4 48 49 37 -132 0 0 48 2 59 12 21 50 57 153 -19 47 44 40 48 21 22 47 10 2 48 56 27 -131 0 0 48 9 37 12 22 1 57 155 -18 47 51 19 48 27 58 47 16 43 49 3 1 -130 0 0 48 15 58 12 22 12 57 157 -18 47 57 42 48 34 18 47 23 8 49 9 19 -129 0 0 48 22 3 12 22 23 58 159 -17 48 3 48 48 40 22 47 29 16 49 15 20 -128 0 0 48 27 52 12 22 34 58 161 -16 48 9 38 48 46 10 47 35 8 49 21 6 -127 0 0 48 33 25 12 22 45 58 163 -16 48 15 11 48 51 41 47 40 44 49 26 35 -126 0 0 48 38 41 12 22 57 58 165 -15 48 20 29 48 56 57 47 46 3 49 31 49 -125 0 0 48 43 41 12 23 8 58 167 -14 48 25 30 49 1 56 47 51 6 49 36 46 -124 0 0 48 48 25 12 23 19 58 169 -14 48 30 14 49 6 39 47 55 52 49 41 27 -123 0 0 48 52 52 12 23 30 58 170 -13 48 34 43 49 11 5 48 0 22 49 45 52 -122 0 0 48 57 4 12 23 41 58 172 -12 48 38 55 49 15 16 48 4 36 49 50 1 -121 0 0 49 0 59 12 23 52 58 174 -12 48 42 51 49 19 10 48 8 33 49 53 54 -120 0 0 49 4 38 12 24 3 58 176 -11 48 46 31 49 22 49 48 12 14 49 57 31 -119 0 0 49 8 1 12 24 14 58 178 -10 48 49 54 49 26 11 48 15 39 50 0 52 -118 0 0 49 11 8 12 24 25 58 180 -10 48 53 2 49 29 17 48 18 48 50 3 57 -117 0 0 49 13 58 12 24 36 58 182 -9 48 55 53 49 32 7 48 21 40 50 6 46 -116 0 0 49 16 33 12 24 47 58 184 -8 48 58 28 49 34 41 48 24 16 50 9 19 -115 0 0 49 18 51 12 24 57 58 186 -8 49 0 47 49 36 59 48 26 36 50 11 36 -114 0 0 49 20 54 12 25 8 58 188 -7 49 2 50 49 39 1 48 28 39 50 13 37 -113 0 0 49 22 40 12 25 19 58 189 -6 49 4 36 49 40 47 48 30 26 50 15 23 -112 0 0 49 24 10 12 25 30 58 191 -6 49 6 7 49 42 17 48 31 58 50 16 52 -111 0 0 49 25 24 12 25 41 57 193 -5 49 7 21 49 43 31 48 33 12 50 18 6 -110 0 0 49 26 23 12 25 51 57 195 -4 49 8 20 49 44 29 48 34 11 50 19 3 -109 0 0 49 27 5 12 26 2 57 197 -4 49 9 2 49 45 11 48 34 54 50 19 45 -108 0 0 49 27 31 12 26 13 57 199 -3 49 9 28 49 45 37 48 35 20 50 20 11 -107 0 0 49 27 41 12 26 23 57 200 -2 49 9 38 49 45 47 48 35 30 50 20 21 -106 0 0 49 27 35 12 26 34 56 202 -2 49 9 32 49 45 41 48 35 24 50 20 15 -105 0 0 49 27 13 12 26 45 56 204 -1 49 9 10 49 45 20 48 35 2 50 19 54 -104 0 0 49 26 35 12 26 55 56 206 0 49 8 32 49 44 42 48 34 23 50 19 16 Uncertainty in time = +/- 9 secs Prediction of 2012 Jul 20.0 Data for the target star ------------------------ * name: TYC 1252-00642-1 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 03 47 26.7396 DE: +17 21 04.412 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .023, .025 ) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Apparent position with proper motion RA(deg): 57.0489785957 DE(deg): 17.3903443092 * Equation of equinoxes (radians) : 0.000068651874370 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (526) Jena approx. diameter [km]: 57 approx. diameter ["]: .030 distance from Earth [AU]: 2.63100 * orbital information: orbit source: Preston date of fit: 2012 Apr 08 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1209 number of rejected observations: 103 time covered by the observations: 1904 Mar 15 - 2011 Oct 18 1 sigma uncertainty ellipse (major, minor, PA): 0.023, 0.014, 77° remarks: * orbital elements for (526) Jena : Mean anomaly = 280.75754529 deg Arg. of pericenter = 357.66055830 deg Long. of node = 137.88238391 deg Inclination = 2.17081673 deg Eccentricity = 0.13698492 Semimajor axis = 3.12228996 AU Perihelion dist = 2.69458332 AU Mag: H = 10.05, G = 0.15 Epoch of elements : MJD 56179.51600000 TDT (2012 Sep 09.516) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Sep 9 526 Jena 12h 23.9m UT 11.5 3 47 26.740 17 21 4.41TYC 1252-00642-1 11.8 15.7 57 8.2 2.631 0.918 0.81 -118.0711 17.351 -6.68 5.04 12.3984 -0.03318 0.52100 3.93541 0.24248 -0.00534 -0.00111 2000 279.0575462012 831.00000357.660558137.882384 2.1708170.13698492 3.1222900 2.694583310.2 5.00.15 RATE 1.7864640 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.032 0.029 83 1.95 0.029 0 0-4 2 056128.0020120909_0642-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Jul 20, 04:44 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org