IOTA/IOTA-ES occultation update for (654) Zelinda / UCAC2 32019943 event on 2009 Feb 07, 01:54 UT Visible from Summary ------- On 2009 Feb 07 UT, the 129 km diameter asteroid (654) Zelinda will occult a 11.7 mag star in the constellation Canis Minor for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 0.2 mag to 10.2 mag (the magnitude of the asteroid) for at most 18.8 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: 100 * date and approx. time of event: 2009 Feb 07, 01:44 - 2009 Feb 07, 02:02 UT * magnitude of target star: 11.7 * magnitude drop [mag]: 0.2 * estimated maximum duration [s]: 18.8 * Moon: 91 % sunlit, 27° distance * Sun: 151° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 204 * 1 sigma uncertainty interval [path widths]: +/- 0.15 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .036 +/- .028) * 1 sigma uncertainty ellipse (major, minor, PA): ( .036", .027", 108° ) * approx speed of asteroid's shadow [km/s]: 6.8501 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC2 32019943 by 654 Zelinda on 2009 Feb 7 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 E. Longitude Latitude U.T. Alt Az Alt o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude - 1 14 23 81 11 28 1 44 55 7 227 -23 - 11 36 52 78 37 35 ... .. .. .. .. .. - 13 22 41 77 57 2 ... .. .. .. .. .. - 18 6 33 78 40 55 1 45 10 11 211 -27 - 21 42 22 76 32 1 - 10 25 6 81 16 56 - 22 26 21 75 56 52 - 5 57 57 82 12 13 - 26 49 22 76 34 8 1 45 25 13 202 -29 - 28 14 58 74 41 25 - 24 17 25 78 43 41 - 28 33 24 74 10 1 - 23 7 13 79 27 12 - 32 37 2 74 42 55 1 45 40 16 196 -30 - 33 4 14 73 1 32 - 31 48 14 76 35 55 - 33 9 43 72 32 54 - 31 26 40 77 12 47 - 36 57 14 73 2 40 1 45 55 17 192 -32 - 36 53 35 71 29 45 - 36 54 49 74 44 10 - 36 51 43 71 3 15 - 36 52 17 75 16 43 - 40 25 54 71 30 37 1 46 10 19 188 -33 - 40 4 20 70 4 20 - 40 47 48 73 3 36 - 39 57 56 69 39 33 - 40 54 24 73 33 3 - 43 21 3 70 5 1 1 46 25 21 185 -34 - 42 48 21 68 44 5 - 43 56 52 71 31 20 - 42 39 2 68 20 42 - 44 8 22 71 58 27 - 45 52 48 68 44 37 1 46 40 22 183 -35 - 45 12 54 67 28 7 - 46 37 3 70 5 33 - 45 1 38 67 5 55 - 46 51 23 70 30 50 - 48 7 24 67 28 32 1 46 55 23 180 -35 - 47 22 43 66 15 47 - 48 56 58 68 45 2 - 47 10 6 65 54 37 - 49 13 0 69 8 48 - 50 8 58 66 16 7 1 47 10 25 178 -36 - 49 21 2 65 6 36 - 51 1 57 67 28 51 - 49 7 28 64 46 18 - 51 19 1 67 51 22 - 52 0 20 65 6 51 1 47 25 26 176 -37 - 51 10 9 64 0 8 - 52 55 31 66 16 21 - 50 55 56 63 40 37 - 53 13 13 66 37 48 - 53 43 31 64 0 19 1 47 40 27 174 -37 - 52 51 48 62 56 5 - 54 40 6 65 7 0 - 52 37 6 62 37 15 - 54 58 11 65 27 32 - 55 20 0 62 56 13 1 47 56 28 172 -37 - 54 27 14 61 54 11 - 56 17 28 64 0 25 - 54 12 12 61 35 57 - 56 35 45 64 20 8 - 56 50 56 61 54 15 1 48 11 29 171 -38 - 55 57 28 60 54 11 - 57 48 55 62 56 15 - 55 42 12 60 36 31 - 58 7 19 63 15 16 - 58 17 13 60 54 13 1 48 26 29 169 -38 - 57 23 18 59 55 56 - 59 15 27 61 54 15 - 57 7 52 59 38 46 - 59 33 52 62 12 37 - 59 39 31 59 55 56 1 48 41 30 167 -38 - 58 45 20 58 59 16 - 60 37 50 60 54 10 - 58 29 48 58 42 33 - 60 56 14 61 11 59 - 60 58 26 58 59 13 1 48 56 31 166 -38 - 60 4 6 58 4 2 - 61 56 42 59 55 51 - 59 48 30 57 47 44 - 62 15 2 60 13 8 - 62 14 24 58 3 57 1 49 11 32 164 -39 - 61 20 2 57 10 7 - 63 12 32 58 59 6 - 61 4 23 56 54 13 - 63 30 48 59 15 55 - 63 27 48 57 10 0 1 49 26 33 163 -39 - 62 33 29 56 17 25 - 64 25 45 58 3 48 - 62 17 49 56 1 52 - 64 43 55 58 20 11 - 64 38 58 56 17 16 1 49 41 33 161 -39 - 63 44 44 55 25 51 - 65 36 41 57 9 49 - 63 29 4 55 10 38 - 65 54 45 57 25 49 - 65 48 10 55 25 40 1 49 56 34 160 -39 - 64 54 3 54 35 19 - 66 45 38 56 17 4 - 64 38 25 54 20 25 - 67 3 35 56 32 42 - 66 55 39 54 35 7 1 50 11 34 158 -39 - 66 1 40 53 45 46 - 67 52 50 55 25 26 - 65 46 3 53 31 8 - 68 10 40 55 40 44 - 68 1 35 53 45 32 1 50 26 35 157 -39 - 67 7 46 52 57 7 - 68 58 29 54 34 52 - 66 52 11 52 42 46 - 69 16 13 54 49 51 - 69 6 9 52 56 52 1 50 41 35 155 -38 - 68 12 31 52 9 19 - 70 2 47 53 45 15 - 67 56 58 51 55 13 - 70 20 24 53 59 57 - 70 9 31 52 9 3 1 50 56 36 154 -38 - 69 16 4 51 22 19 - 71 5 52 52 56 34 - 69 0 33 51 8 27 - 71 23 23 53 10 59 - 71 11 49 51 22 1 1 51 11 36 153 -38 - 70 18 32 50 36 4 - 72 7 54 52 8 43 - 70 3 3 50 22 25 - 72 25 19 52 22 53 - 72 13 10 50 35 45 1 51 26 37 151 -38 - 71 20 4 49 50 31 - 73 8 59 51 21 40 - 71 4 37 49 37 5 - 73 26 19 51 35 36 - 73 13 40 49 50 11 1 51 41 37 150 -38 - 72 20 44 49 5 38 - 74 9 15 50 35 23 - 72 5 20 48 52 23 - 74 26 29 50 49 4 - 74 13 26 49 5 16 1 51 56 37 148 -37 - 73 20 40 48 21 23 - 75 8 47 49 49 47 - 73 5 18 48 8 19 - 75 25 56 50 3 16 - 75 12 33 48 21 0 1 52 11 38 147 -37 - 74 19 56 47 37 43 - 76 7 41 49 4 52 - 74 4 36 47 24 51 - 76 24 45 49 18 8 - 76 11 5 47 37 19 1 52 27 38 146 -37 - 75 18 37 46 54 37 - 77 6 1 48 20 34 - 75 3 19 46 41 55 - 77 23 1 48 33 39 - 77 9 8 46 54 12 1 52 42 38 144 -36 - 76 16 47 46 12 4 - 78 3 53 47 36 52 - 76 1 31 45 59 31 - 78 20 49 47 49 47 - 78 6 45 46 11 38 1 52 57 38 143 -36 - 77 14 31 45 30 1 - 79 1 21 46 53 44 - 76 59 17 45 17 38 - 79 18 13 47 6 28 - 79 4 1 45 29 34 1 53 12 39 141 -36 - 78 11 53 44 48 27 - 79 58 28 46 11 9 - 77 56 40 44 36 13 - 80 15 16 46 23 43 - 80 0 59 44 47 59 1 53 27 39 140 -35 - 79 8 56 44 7 21 - 80 55 18 45 29 3 - 78 53 44 43 55 15 - 81 12 4 45 41 28 - 80 57 43 44 6 51 1 53 42 39 139 -35 - 80 5 44 43 26 41 - 81 51 55 44 47 27 - 79 50 32 43 14 43 - 82 8 39 44 59 43 - 81 54 15 43 26 11 1 53 57 39 137 -34 - 81 2 19 42 46 27 - 82 48 23 44 6 19 - 80 47 9 42 34 36 - 83 5 4 44 18 26 - 82 50 40 42 45 55 1 54 12 39 136 -34 - 81 58 46 42 6 36 - 83 44 44 43 25 37 - 81 43 36 41 54 53 - 84 1 24 43 37 36 - 83 47 0 42 6 3 1 54 27 39 135 -33 - 82 55 7 41 27 9 - 84 41 1 42 45 20 - 82 39 57 41 15 33 - 84 57 40 42 57 11 - 84 43 18 41 26 35 1 54 42 39 133 -33 - 83 51 25 40 48 4 - 85 37 18 42 5 27 - 83 36 14 40 36 34 - 85 53 57 42 17 11 - 85 39 38 40 47 28 1 54 57 39 132 -32 - 84 47 43 40 9 19 - 86 33 38 41 25 57 - 84 32 32 39 57 57 - 86 50 17 41 37 34 - 86 36 2 40 8 43 1 55 12 39 131 -32 - 85 44 4 39 30 55 - 87 30 4 40 46 50 - 85 28 52 39 19 39 - 87 46 43 40 58 20 - 87 32 32 39 30 17 1 55 27 39 129 -31 - 86 40 31 38 52 50 - 88 26 38 40 8 3 - 86 25 17 38 41 40 - 88 43 18 40 19 26 - 88 29 13 38 52 11 1 55 42 39 128 -30 - 87 37 6 38 15 4 - 89 23 24 39 29 36 - 87 21 51 38 3 59 - 89 40 5 39 40 53 - 89 26 7 38 14 24 1 55 57 38 127 -30 - 88 33 53 37 37 36 - 90 20 25 38 51 29 - 88 18 36 37 26 36 - 90 37 8 39 2 40 - 90 23 17 37 36 54 1 56 12 38 126 -29 - 89 30 55 37 0 24 - 91 17 43 38 13 40 - 89 15 35 36 49 30 - 91 34 29 38 24 45 - 91 20 46 36 59 41 1 56 27 38 124 -28 - 90 28 13 36 23 29 - 92 15 22 37 36 9 - 90 12 50 36 12 41 - 92 32 11 37 47 8 - 92 18 37 36 22 45 1 56 43 38 123 -28 - 91 25 52 35 46 50 - 93 13 26 36 58 55 - 91 10 26 35 36 6 - 93 30 18 37 9 49 - 93 16 53 35 46 4 1 56 58 37 122 -27 - 92 23 55 35 10 26 - 94 11 56 36 21 57 - 92 8 24 34 59 47 - 94 28 53 36 32 46 - 94 15 38 35 9 38 1 57 13 37 121 -26 - 93 22 24 34 34 16 - 95 10 58 35 45 14 - 93 6 48 34 23 42 - 95 28 0 35 55 58 - 95 14 55 34 33 27 1 57 28 37 119 -25 - 94 21 23 33 58 20 - 96 10 34 35 8 47 - 94 5 42 33 47 50 - 96 27 42 35 19 26 - 96 14 48 33 57 29 1 57 43 36 118 -25 - 95 20 56 33 22 37 - 97 10 49 34 32 34 - 95 5 9 33 12 12 - 97 28 4 34 43 8 - 97 15 22 33 21 45 1 57 58 36 117 -24 - 96 21 6 32 47 7 - 98 11 47 33 56 35 - 96 5 13 32 36 46 - 98 29 9 34 7 4 - 98 16 39 32 46 14 1 58 13 35 116 -23 - 97 21 58 32 11 50 - 99 13 32 33 20 49 - 97 5 58 32 1 33 - 99 31 3 33 31 14 - 99 18 46 32 10 54 1 58 28 35 115 -22 - 98 23 36 31 36 44 -100 16 10 32 45 15 - 98 7 27 31 26 31 -100 33 51 32 55 36 -100 21 46 31 35 46 1 58 43 34 114 -21 - 99 26 4 31 1 49 -101 19 45 32 9 54 - 99 9 46 30 51 40 -101 37 37 32 20 10 -101 25 46 31 0 50 1 58 58 34 113 -20 -100 29 28 30 27 6 -102 24 24 31 34 44 -100 13 0 30 17 0 -102 42 28 31 44 56 -102 30 51 30 26 4 1 59 13 33 111 -19 -101 33 53 29 52 32 -103 30 13 30 59 45 -101 17 14 29 42 31 -103 48 31 31 9 53 -103 37 8 29 51 28 1 59 28 33 110 -18 -102 39 26 29 18 9 -104 37 19 30 24 57 -102 22 35 29 8 10 -104 55 54 30 35 1 -104 44 45 29 17 2 1 59 43 32 109 -17 -103 46 14 28 43 54 -105 45 51 29 50 18 -103 29 8 28 34 0 -106 4 43 30 0 19 -105 53 51 28 42 45 1 59 58 31 108 -16 -104 54 23 28 9 49 -106 55 58 29 15 49 -104 37 2 27 59 58 -107 15 11 29 25 46 -107 4 34 28 8 37 2 0 13 31 107 -15 -106 4 4 27 35 52 -108 7 51 28 41 30 -105 46 25 27 26 4 -108 27 26 28 51 23 -108 17 6 27 34 37 2 0 28 30 106 -14 -107 15 25 27 2 3 -109 21 42 28 7 18 -106 57 27 26 52 18 -109 41 43 28 17 8 -109 31 39 27 0 45 2 0 43 29 105 -13 -108 28 39 26 28 22 -110 37 46 27 33 14 -108 10 19 26 18 40 -110 58 16 27 43 1 -110 48 30 26 26 59 2 0 58 28 104 -12 -109 43 59 25 54 47 -111 56 20 26 59 18 -109 25 13 25 45 9 -112 17 23 27 9 1 -112 7 55 25 53 21 2 1 14 27 103 -11 -111 1 41 25 21 19 -113 17 44 26 25 28 -110 42 26 25 11 44 -113 39 26 26 35 8 -113 30 17 25 19 48 2 1 29 26 102 -9 -112 22 3 24 47 57 -114 42 24 25 51 45 -112 2 15 24 38 25 -115 4 52 26 1 21 -114 56 2 24 46 21 2 1 44 25 101 -8 -113 45 28 24 14 40 -116 10 52 25 18 6 -113 25 3 24 5 11 -116 34 14 25 27 39 -116 25 44 24 12 59 2 1 59 24 100 -7 -115 12 25 23 41 28 -117 43 48 24 44 33 -114 51 15 23 32 2 -118 8 16 24 54 2 -118 0 6 23 39 40 2 2 14 22 99 -5 -116 43 30 23 8 20 -119 22 6 24 11 2 -116 21 26 22 58 57 -119 47 54 24 20 28 -119 40 5 23 6 24 2 2 29 21 98 -4 -118 19 28 22 35 15 -121 6 58 23 37 34 -117 56 20 22 25 55 -121 34 26 23 46 55 -121 26 58 22 33 9 2 2 44 20 98 -2 -120 1 20 22 2 12 -123 0 6 23 4 6 -119 36 54 21 52 56 -123 29 47 23 13 24 -123 22 39 21 59 54 2 2 59 18 97 0 -121 50 33 21 29 10 -125 4 8 22 30 37 -121 24 27 21 19 57 -125 36 49 22 39 49 Uncertainty in time = +/- 3 secs [Prediction of 2008 Nov 6.0] Data for the target star ------------------------ * name: UCAC2 32019943 * constellation : Canis Minor * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 42 05.2679 DE: +00 47 13.219 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .023, .023 ) * V mag [mag]: 11.7 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (654) Zelinda approx. diameter [km]: 129 approx. diameter ["]: .213 distance from Earth [AU]: 0.83400 * orbital information: orbit source: Preston date of fit: 2008 Nov 05 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 957 number of rejected observations: 68 time covered by the observations: 1908 Jan 04 - 2008 Sep 05 1 sigma uncertainty ellipse (major, minor, PA): 0.029, 0.014, 120° remarks: * orbital elements for (654) Zelinda : Mean anomaly = 358.68129280 deg Arg. of pericenter = 213.93754903 deg Long. of node = 278.57129802 deg Inclination = 18.12808202 deg Eccentricity = 0.23239455 Semimajor axis = 2.29658608 AU Perihelion dist = 1.76287199 AU Mag: H = 8.51, G = 0.15 Epoch of elements : MJD 54869.07900000 TDT (2009 Feb 07.079) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Feb 7 654 Zelinda 1h 54.5m UT 11.7 7 42 5.268 0 47 13.22UCAC2 32019943 0.0 10.2 129 18.8 0.834 -2.307 -21.53 -50.4183 0.795 154.92 -15.30 1.9075 -0.41004 0.65863 -3.28272 -2.04273 0.00211 0.00128 2000 356.1101992009 129.00000213.937549278.571298 18.1280820.23239455 2.2965861 1.7628720 8.5 5.00.15 RATE 2.8319130 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.036 0.027 108 1.15 0.033 0 54776.5020090207_019943 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 06, 05:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org