IOTA/IOTA-ES occultation update for (1614) Goldschmidt / TYC 0124-00185-1 event on 2012 Oct 22, 08:41 UT Visible from Canada, USA, Central America, Peru Summary ------- On 2012 Oct 22 UT, the 49 km diameter asteroid (1614) Goldschmidt will occult a 11.4 mag star in the constellation Orion for observers along a path across Canada, USA, Central America, Peru. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.5 mag to 15.9 mag (the magnitude of the asteroid) for at most 7.5 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: 42 * date and approx. time of event: 2012 Oct 22, 08:25 - 2012 Oct 22, 08:56 UT * geocentric midpoint of event [JD]: 2456222.86205833 * magnitude of target star: 11.4 * magnitude drop [mag]: 4.5 * estimated maximum duration [s]: 7.5 * Moon: 52 % sunlit, 145° distance * Sun: 120° distance * rough path description: Canada, USA, Central America, Peru The occultation path -------------------- * approximate projected width [km]: 50 * 1 sigma uncertainty interval [path widths]: +/- 1.57 * 1 sigma uncertainty interval [seconds]: +/- 17.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .045 +/- .069) * 1 sigma uncertainty ellipse (major, minor, PA): ( .069", .045", 360° ) * approx speed of asteroid's shadow [km/s]: 6.5053 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0124-00185-1 by 1614 Goldschmidt on 2012 Oct 22 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 ' " Longitude Longitude Longitude Longitude Latitude Latitude Latitude Latitude - 73 0 0 -63 2 33 8 56 20 22 356 -1 -64 51 3 -61 16 1 -70 49 13 -55 51 9 - 74 0 0 -58 58 16 8 55 52 26 357 -3 -60 56 50 -57 1 55 -67 29 27 -51 7 14 - 75 0 0 -53 53 39 8 55 10 31 358 -6 -56 3 2 -51 46 44 -63 12 4 -45 19 54 - 76 0 0 -47 33 53 8 54 9 37 359 -10 -49 54 13 -45 16 16 -57 39 46 -38 17 32 - 77 0 0 -39 46 24 8 52 40 45 1 -15 -42 16 14 -37 19 47 -50 34 6 -29 56 33 - 78 0 0 -30 32 33 8 50 39 54 4 -20 -33 6 41 -28 2 33 -41 42 46 -20 35 28 - 79 0 0 -20 25 15 8 48 8 64 9 -26 -22 53 38 -18 1 57 -31 17 37 -11 1 31 - 80 0 0 -10 27 2 8 45 27 73 20 -31 -12 39 40 - 8 19 28 -20 14 34 - 2 7 39 - 81 0 0 - 1 30 49 8 42 55 80 46 -35 - 3 24 13 0 18 26 - 9 51 59 5 38 14 - 82 0 0 6 6 4 8 40 43 81 94 -38 4 29 53 7 39 12 - 0 55 29 12 14 13 - 83 0 0 12 30 2 8 38 52 78 124 -41 11 7 29 13 50 20 6 31 39 17 49 47 - 84 0 0 17 54 6 8 37 19 73 136 -42 16 42 3 19 4 30 12 43 50 22 36 8 - 85 0 0 22 30 34 8 36 1 69 142 -43 21 26 38 23 33 17 17 57 2 26 43 2 - 86 0 0 26 29 15 8 34 56 65 144 -44 25 31 42 27 25 52 22 24 15 30 18 7 - 87 0 0 29 57 37 8 34 0 62 146 -44 29 5 10 30 49 19 26 15 17 33 27 20 - 88 0 0 33 1 19 8 33 12 58 147 -44 32 13 3 33 49 0 29 37 22 36 15 12 - 89 0 0 35 44 41 8 32 30 56 147 -44 34 59 54 36 29 0 32 35 55 38 45 17 - 90 0 0 38 11 3 8 31 53 53 147 -44 37 29 12 38 52 31 35 15 2 41 0 20 - 91 0 0 40 23 3 8 31 21 51 147 -44 39 43 42 41 2 4 37 37 53 43 2 35 - 92 0 0 42 22 45 8 30 53 49 147 -44 41 45 35 42 59 39 39 46 58 44 53 47 - 93 0 0 44 11 52 8 30 27 47 146 -43 43 36 36 44 46 53 41 44 14 46 35 25 - 94 0 0 45 51 45 8 30 5 45 146 -43 45 18 10 46 25 7 43 31 19 48 8 40 - 95 0 0 47 23 32 8 29 44 43 145 -43 46 51 27 47 55 27 45 9 30 49 34 32 - 96 0 0 48 48 12 8 29 26 42 145 -42 48 17 28 49 18 47 46 39 52 50 53 52 - 97 0 0 50 6 31 8 29 9 40 144 -42 49 36 59 50 35 55 48 3 20 52 7 22 - 98 0 0 51 19 11 8 28 54 39 143 -42 50 50 45 51 47 30 49 20 39 53 15 39 - 99 0 0 52 26 46 8 28 40 37 143 -41 51 59 20 52 54 6 50 32 28 54 19 14 -100 0 0 53 29 47 8 28 27 36 142 -41 53 3 16 53 56 12 51 39 21 55 18 34 -101 0 0 54 28 39 8 28 16 35 141 -41 54 2 59 54 54 15 52 41 46 56 14 3 -102 0 0 55 23 46 8 28 5 34 140 -40 54 58 52 55 48 35 53 40 8 57 6 2 -103 0 0 56 15 26 8 27 55 33 140 -40 55 51 15 56 39 33 54 34 50 57 54 49 -104 0 0 57 3 59 8 27 46 32 139 -40 56 40 28 57 27 26 55 26 10 58 40 40 -105 0 0 57 49 38 8 27 37 31 138 -39 57 26 44 58 12 29 56 14 26 59 23 50 -106 0 0 58 32 39 8 27 30 30 137 -39 58 10 20 58 54 55 56 59 51 60 4 30 -107 0 0 59 13 13 8 27 22 29 136 -39 58 51 26 59 34 57 57 42 41 60 42 53 -108 0 0 59 51 31 8 27 15 28 136 -39 59 30 14 60 12 45 58 23 6 61 19 9 -109 0 0 60 27 44 8 27 9 28 135 -38 60 6 55 60 48 30 59 1 17 61 53 26 -110 0 0 61 1 59 8 27 3 27 134 -38 60 41 37 61 22 19 59 37 25 62 25 53 -111 0 0 61 34 26 8 26 57 26 133 -38 61 14 29 61 54 21 60 11 36 62 56 38 -112 0 0 62 5 11 8 26 52 25 132 -37 61 45 38 62 24 42 60 44 0 63 25 47 -113 0 0 62 34 21 8 26 47 25 131 -37 62 15 10 62 53 30 61 14 43 63 53 26 -114 0 0 63 2 2 8 26 42 24 130 -37 62 43 13 63 20 51 61 43 52 64 19 42 -115 0 0 63 28 20 8 26 38 23 129 -37 63 9 50 63 46 48 62 11 33 64 44 38 -116 0 0 63 53 19 8 26 34 23 129 -36 63 35 8 64 11 29 62 37 50 65 8 21 -117 0 0 64 17 4 8 26 30 22 128 -36 63 59 11 64 34 56 63 2 50 65 30 53 -118 0 0 64 39 40 8 26 26 22 127 -36 64 22 3 64 57 15 63 26 36 65 52 20 -119 0 0 65 1 10 8 26 22 21 126 -36 64 43 49 65 18 29 63 49 12 66 12 44 -120 0 0 65 21 37 8 26 19 21 125 -35 65 4 31 65 38 41 64 10 42 66 32 9 -121 0 0 65 41 5 8 26 16 20 124 -35 65 24 14 65 57 55 64 31 11 66 50 39 -122 0 0 65 59 37 8 26 13 20 123 -35 65 43 0 66 16 14 64 50 40 67 8 15 -123 0 0 66 17 16 8 26 10 19 122 -35 66 0 52 66 33 40 65 9 13 67 25 1 -124 0 0 66 34 5 8 26 7 19 121 -35 66 17 52 66 50 16 65 26 52 67 40 59 -125 0 0 66 50 4 8 26 5 18 120 -34 66 34 4 67 6 4 65 43 41 67 56 11 -126 0 0 67 5 18 8 26 2 18 119 -34 66 49 29 67 21 7 65 59 41 68 10 39 -127 0 0 67 19 48 8 26 0 17 118 -34 67 4 9 67 35 26 66 14 54 68 24 26 -128 0 0 67 33 36 8 25 57 17 118 -34 67 18 7 67 49 4 66 29 24 68 37 33 -129 0 0 67 46 43 8 25 55 16 117 -33 67 31 24 68 2 2 66 43 11 68 50 1 -130 0 0 67 59 12 8 25 53 16 116 -33 67 44 1 68 14 21 66 56 17 69 1 53 -131 0 0 68 11 3 8 25 51 15 115 -33 67 56 1 68 26 4 67 8 44 69 13 9 -132 0 0 68 22 19 8 25 49 15 114 -33 68 7 25 68 37 12 67 20 33 69 23 51 -133 0 0 68 33 0 8 25 48 15 113 -33 68 18 14 68 47 45 67 31 46 69 34 1 -134 0 0 68 43 8 8 25 46 14 112 -33 68 28 29 68 57 46 67 42 25 69 43 39 -135 0 0 68 52 44 8 25 44 14 111 -32 68 38 12 69 7 15 67 52 29 69 52 46 -136 0 0 69 1 48 8 25 43 13 110 -32 68 47 23 69 16 13 68 2 1 70 1 24 -137 0 0 69 10 23 8 25 41 13 109 -32 68 56 4 69 24 42 68 11 1 70 9 34 -138 0 0 69 18 29 8 25 40 13 108 -32 69 4 15 69 32 42 68 19 31 70 17 15 -139 0 0 69 26 6 8 25 38 12 107 -32 69 11 58 69 40 14 68 27 31 70 24 30 -140 0 0 69 33 16 8 25 37 12 106 -31 69 19 13 69 47 18 68 35 2 70 31 19 -141 0 0 69 39 59 8 25 36 11 105 -31 69 26 1 69 53 57 68 42 5 70 37 43 -142 0 0 69 46 16 8 25 34 11 105 -31 69 32 23 70 0 9 68 48 41 70 43 41 -143 0 0 69 52 8 8 25 33 11 104 -31 69 38 18 70 5 57 68 54 50 70 49 16 -144 0 0 69 57 35 8 25 32 10 103 -31 69 43 49 70 11 20 69 0 33 70 54 26 -145 0 0 70 2 37 8 25 31 10 102 -30 69 48 55 70 16 18 69 5 51 70 59 14 -146 0 0 70 7 16 8 25 30 10 101 -30 69 53 37 70 20 54 69 10 43 71 3 39 -147 0 0 70 11 31 8 25 29 9 100 -30 69 57 55 70 25 6 69 15 11 71 7 42 -148 0 0 70 15 23 8 25 28 9 99 -30 70 1 50 70 28 55 69 19 15 71 11 23 -149 0 0 70 18 53 8 25 27 9 98 -30 70 5 22 70 32 23 69 22 55 71 14 42 -150 0 0 70 22 0 8 25 26 8 97 -30 70 8 32 70 35 28 69 26 11 71 17 40 -151 0 0 70 24 45 8 25 25 8 96 -29 70 11 19 70 38 11 69 29 5 71 20 17 -152 0 0 70 27 9 8 25 24 8 95 -29 70 13 45 70 40 33 69 31 36 71 22 34 -153 0 0 70 29 11 8 25 24 7 94 -29 70 15 48 70 42 34 69 33 44 71 24 30 -154 0 0 70 30 52 8 25 23 7 93 -29 70 17 30 70 44 13 69 35 30 71 26 6 -155 0 0 70 32 12 8 25 22 7 92 -29 70 18 51 70 45 32 69 36 54 71 27 21 -156 0 0 70 33 10 8 25 22 6 91 -29 70 19 50 70 46 30 69 37 55 71 28 17 -157 0 0 70 33 48 8 25 21 6 90 -28 70 20 28 70 47 7 69 38 35 71 28 52 -158 0 0 70 34 4 8 25 20 6 89 -28 70 20 45 70 47 23 69 38 53 71 29 8 -159 0 0 70 34 0 8 25 20 5 89 -28 70 20 41 70 47 19 69 38 49 71 29 4 -160 0 0 70 33 35 8 25 19 5 88 -28 70 20 16 70 46 54 69 38 23 71 28 40 -161 0 0 70 32 50 8 25 19 5 87 -28 70 19 30 70 46 9 69 37 35 71 27 56 -162 0 0 70 31 43 8 25 18 4 86 -28 70 18 22 70 45 3 69 36 25 71 26 53 -163 0 0 70 30 15 8 25 18 4 85 -27 70 16 53 70 43 36 69 34 53 71 25 29 -164 0 0 70 28 26 8 25 18 4 84 -27 70 15 3 70 41 49 69 32 59 71 23 45 -165 0 0 70 26 16 8 25 17 3 83 -27 70 12 52 70 39 40 69 30 43 71 21 41 -166 0 0 70 23 44 8 25 17 3 82 -27 70 10 18 70 37 10 69 28 4 71 19 16 -167 0 0 70 20 51 8 25 17 3 81 -27 70 7 23 70 34 18 69 25 3 71 16 31 -168 0 0 70 17 36 8 25 16 2 80 -26 70 4 6 70 31 5 69 21 38 71 13 25 -169 0 0 70 13 58 8 25 16 2 79 -26 70 0 26 70 27 30 69 17 51 71 9 58 -170 0 0 70 9 58 8 25 16 2 78 -26 69 56 23 70 23 33 69 13 39 71 6 9 -171 0 0 70 5 35 8 25 16 1 77 -26 69 51 57 70 19 13 69 9 4 71 1 58 -172 0 0 70 0 49 8 25 16 1 76 -26 69 47 7 70 14 30 69 4 4 70 57 25 -173 0 0 69 55 39 8 25 16 0 75 -25 69 41 54 70 9 24 68 58 40 70 52 30 -174 0 0 69 50 5 8 25 16 0 74 -25 69 36 16 70 3 53 .. .. .. 70 47 12 Uncertainty in time = +/- 18 secs Prediction of 2012 Oct 8.0 Data for the target star ------------------------ * name: TYC 0124-00185-1 * constellation : Orion * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 05 51 48.7966 DE: +05 27 19.886 * position source: mpos:UCAC4 pm:UCAC4 * standard error: RA,DE ["]: ( .033, .066 ) * V mag [mag]: 11.4 * B mag [mag]: 12.2 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1614) Goldschmidt approx. diameter [km]: 49 approx. diameter ["]: .029 distance from Earth [AU]: 2.30400 * orbital information: orbit source: Preston date of fit: 2012 Oct 07 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 989 number of rejected observations: 66 time covered by the observations: 1928 Sep 17 - 2012 Oct 03 1 sigma uncertainty ellipse (major, minor, PA): 0.030, 0.019, 84° remarks: * orbital elements for (1614) Goldschmidt : Mean anomaly = 294.02108024 deg Arg. of pericenter = 341.78490888 deg Long. of node = 162.49479904 deg Inclination = 14.06333762 deg Eccentricity = 0.07205139 Semimajor axis = 3.00071410 AU Perihelion dist = 2.78450847 AU Mag: H = 10.77, G = 0.15 Epoch of elements : MJD 56222.36200000 TDT (2012 Oct 22.362) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 22 1614 Goldschmidt 8h 41.4m UT 11.4 5 51 48.797 5 27 19.89TYC 0124-00185-1 12.2 15.9 49 7.5 2.304 0.180 -13.75 -73.5749 5.459 45.77 -11.25 8.6894 -0.14382 -0.02765 0.70927 -3.60263 -0.00499 0.00087 2000 293.57321520121020.00000341.784909162.494799 14.0633380.07205139 3.0007141 2.784508510.8 5.00.15 RATE 1.8961260 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.069 0.045 360 2.57 0.046 0 0-4-4 056208.0020121022_0185-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 07, 19:16 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org