IOTA/IOTA-ES occultation update for (3642) Frieden / TYC 0787-00741-1 event on 2009 Nov 02, 11:12 UT Visible from Summary ------- On 2009 Nov 02 UT, the 35 km diameter asteroid (3642) Frieden will occult a 10.3 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 5.8 mag to 16.1 mag (the magnitude of the asteroid) for at most 3.3 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: 33 * date and approx. time of event: 2009 Nov 02, 11:03 - 2009 Nov 02, 11:14 UT * magnitude of target star: 10.3 * magnitude drop [mag]: 5.8 * estimated maximum duration [s]: 3.3 * Moon: 100 % sunlit, 83° distance * Sun: 102° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 41 * 1 sigma uncertainty interval [path widths]: +/- 2.00 * 1 sigma uncertainty interval [seconds]: +/- 7.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .052 +/- .041) * 1 sigma uncertainty ellipse (major, minor, PA): ( .052", .041", 84° ) * approx speed of asteroid's shadow [km/s]: 10.5702 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0787-00741-1 by 3642 Frieden on 2009 Nov 2 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 170 0 0 41 37 34 11 3 51 0 75 -58 .. .. .. 41 49 8 .. .. .. 42 35 37 171 0 0 41 49 53 11 3 51 1 75 -58 41 38 22 42 1 26 .. .. .. 42 47 52 172 0 0 42 2 1 11 3 52 2 76 -59 41 50 30 42 13 33 .. .. .. 42 59 56 173 0 0 42 13 56 11 3 52 2 77 -59 42 2 26 42 25 27 .. .. .. 43 11 48 174 0 0 42 25 39 11 3 52 3 77 -59 42 14 10 42 37 10 .. .. .. 43 23 28 175 0 0 42 37 10 11 3 53 4 78 -59 42 25 42 42 48 40 .. .. .. 43 34 55 176 0 0 42 48 29 11 3 54 5 79 -60 42 37 1 42 59 58 41 51 24 43 46 10 177 0 0 42 59 35 11 3 55 5 79 -60 42 48 8 43 11 4 42 2 34 43 57 13 178 0 0 43 10 29 11 3 55 6 80 -60 42 59 3 43 21 57 42 13 31 44 8 3 179 0 0 43 21 10 11 3 57 7 81 -60 43 9 44 43 32 37 42 24 15 44 18 40 180 0 0 43 31 38 11 3 58 8 81 -60 43 20 13 43 43 5 42 34 47 44 29 5 -179 0 0 43 41 54 11 3 59 8 82 -60 43 30 29 43 53 19 42 45 6 44 39 16 -178 0 0 43 51 56 11 4 0 9 83 -60 43 40 33 44 3 21 42 55 12 44 49 15 -177 0 0 44 1 45 11 4 2 10 84 -60 43 50 23 44 13 10 43 5 5 44 59 1 -176 0 0 44 11 22 11 4 4 11 84 -60 44 0 0 44 22 45 43 14 45 45 8 33 -175 0 0 44 20 45 11 4 5 11 85 -60 44 9 23 44 32 7 43 24 11 45 17 53 -174 0 0 44 29 54 11 4 7 12 86 -60 44 18 34 44 41 17 43 33 25 45 26 59 -173 0 0 44 38 51 11 4 9 13 86 -60 44 27 31 44 50 12 43 42 25 45 35 52 -172 0 0 44 47 34 11 4 11 14 87 -60 44 36 15 44 58 55 43 51 11 45 44 31 -171 0 0 44 56 3 11 4 13 14 88 -60 44 44 45 45 7 23 43 59 44 45 52 57 -170 0 0 45 4 19 11 4 16 15 89 -60 44 53 2 45 15 39 44 8 3 46 1 10 -169 0 0 45 12 22 11 4 18 16 89 -60 45 1 5 45 23 40 44 16 9 46 9 8 -168 0 0 45 20 11 11 4 20 16 90 -60 45 8 54 45 31 28 44 24 1 46 16 54 -167 0 0 45 27 46 11 4 23 17 91 -59 45 16 30 45 39 3 44 31 40 46 24 25 -166 0 0 45 35 7 11 4 26 18 92 -59 45 23 52 45 46 23 44 39 4 46 31 44 -165 0 0 45 42 15 11 4 28 19 92 -59 45 31 0 45 53 30 44 46 15 46 38 48 -164 0 0 45 49 8 11 4 31 19 93 -59 45 37 54 46 0 24 44 53 12 46 45 38 -163 0 0 45 55 48 11 4 34 20 94 -58 45 44 35 46 7 3 44 59 55 46 52 15 -162 0 0 46 2 14 11 4 37 21 95 -58 45 51 1 46 13 28 45 6 24 46 58 38 -161 0 0 46 8 26 11 4 40 21 96 -58 45 57 14 46 19 40 45 12 39 47 4 47 -160 0 0 46 14 24 11 4 44 22 96 -57 46 3 13 46 25 37 45 18 40 47 10 42 -159 0 0 46 20 8 11 4 47 23 97 -57 46 8 57 46 31 21 45 24 26 47 16 24 -158 0 0 46 25 39 11 4 50 23 98 -57 46 14 28 46 36 50 45 29 59 47 21 51 -157 0 0 46 30 55 11 4 54 24 99 -56 46 19 45 46 42 6 45 35 18 47 27 5 -156 0 0 46 35 57 11 4 57 25 100 -56 46 24 47 46 47 8 45 40 23 47 32 4 -155 0 0 46 40 45 11 5 1 25 100 -56 46 29 36 46 51 55 45 45 13 47 36 49 -154 0 0 46 45 19 11 5 5 26 101 -55 46 34 10 46 56 28 45 49 49 47 41 21 -153 0 0 46 49 38 11 5 9 27 102 -55 46 38 30 47 0 48 45 54 11 47 45 38 -152 0 0 46 53 44 11 5 13 27 103 -55 46 42 36 47 4 53 45 58 19 47 49 42 -151 0 0 46 57 36 11 5 17 28 104 -54 46 46 28 47 8 44 46 2 12 47 53 31 -150 0 0 47 1 13 11 5 21 29 105 -54 46 50 6 47 12 21 46 5 52 47 57 7 -149 0 0 47 4 36 11 5 25 29 106 -53 46 53 30 47 15 44 46 9 17 48 0 28 -148 0 0 47 7 45 11 5 29 30 106 -53 46 56 39 47 18 52 46 12 27 48 3 35 -147 0 0 47 10 40 11 5 34 31 107 -52 46 59 34 47 21 47 46 15 24 48 6 28 -146 0 0 47 13 20 11 5 38 31 108 -52 47 2 15 47 24 27 46 18 6 48 9 7 -145 0 0 47 15 46 11 5 42 32 109 -51 47 4 41 47 26 53 46 20 33 48 11 32 -144 0 0 47 17 58 11 5 47 33 110 -51 47 6 53 47 29 4 46 22 47 48 13 42 -143 0 0 47 19 56 11 5 52 33 111 -50 47 8 51 47 31 2 46 24 45 48 15 39 -142 0 0 47 21 39 11 5 56 34 112 -50 47 10 35 47 32 45 46 26 30 48 17 21 -141 0 0 47 23 8 11 6 1 34 113 -49 47 12 4 47 34 14 46 28 0 48 18 49 -140 0 0 47 24 23 11 6 6 35 114 -49 47 13 19 47 35 29 46 29 16 48 20 3 -139 0 0 47 25 24 11 6 11 36 115 -48 47 14 20 47 36 29 46 30 17 48 21 3 -138 0 0 47 26 10 11 6 16 36 116 -48 47 15 6 47 37 15 46 31 3 48 21 48 -137 0 0 47 26 42 11 6 21 37 117 -47 47 15 38 47 37 47 46 31 36 48 22 20 -136 0 0 47 26 59 11 6 26 38 118 -47 47 15 55 47 38 4 46 31 54 48 22 37 -135 0 0 47 27 2 11 6 32 38 119 -46 47 15 59 47 38 7 46 31 57 48 22 40 -134 0 0 47 26 51 11 6 37 39 120 -45 47 15 47 47 37 56 46 31 46 48 22 28 -133 0 0 47 26 25 11 6 42 39 121 -45 47 15 22 47 37 30 46 31 20 48 22 2 -132 0 0 47 25 45 11 6 48 40 122 -44 47 14 41 47 36 50 46 30 40 48 21 22 -131 0 0 47 24 50 11 6 53 41 123 -44 47 13 47 47 35 55 46 29 45 48 20 28 -130 0 0 47 23 41 11 6 59 41 124 -43 47 12 38 47 34 46 46 28 35 48 19 19 -129 0 0 47 22 18 11 7 5 42 125 -43 47 11 14 47 33 23 46 27 11 48 17 57 -128 0 0 47 20 40 11 7 10 42 126 -42 47 9 36 47 31 45 46 25 33 48 16 19 -127 0 0 47 18 48 11 7 16 43 127 -41 47 7 43 47 29 53 46 23 40 48 14 28 -126 0 0 47 16 41 11 7 22 43 128 -41 47 5 36 47 27 46 46 21 32 48 12 22 -125 0 0 47 14 19 11 7 28 44 129 -40 47 3 15 47 25 25 46 19 9 48 10 1 -124 0 0 47 11 43 11 7 34 45 131 -40 47 0 39 47 22 49 46 16 32 48 7 26 -123 0 0 47 8 53 11 7 40 45 132 -39 46 57 48 47 19 59 46 13 41 48 4 37 -122 0 0 47 5 48 11 7 46 46 133 -38 46 54 43 47 16 54 46 10 34 48 1 34 -121 0 0 47 2 28 11 7 52 46 134 -38 46 51 23 47 13 35 46 7 13 47 58 16 -120 0 0 46 58 54 11 7 59 47 135 -37 46 47 48 47 10 1 46 3 38 47 54 43 -119 0 0 46 55 5 11 8 5 47 137 -36 46 43 59 47 6 13 45 59 47 47 50 56 -118 0 0 46 51 2 11 8 12 48 138 -36 46 39 56 47 2 10 45 55 42 47 46 55 -117 0 0 46 46 44 11 8 18 48 139 -35 46 35 37 46 57 52 45 51 22 47 42 39 -116 0 0 46 42 12 11 8 25 49 141 -34 46 31 4 46 53 20 45 46 48 47 38 8 -115 0 0 46 37 25 11 8 31 49 142 -34 46 26 17 46 48 34 45 41 59 47 33 23 -114 0 0 46 32 23 11 8 38 50 143 -33 46 21 15 46 43 33 45 36 55 47 28 24 -113 0 0 46 27 7 11 8 45 50 145 -32 46 15 58 46 38 17 45 31 36 47 23 10 -112 0 0 46 21 36 11 8 52 51 146 -32 46 10 27 46 32 46 45 26 3 47 17 42 -111 0 0 46 15 50 11 8 58 51 147 -31 46 4 40 46 27 1 45 20 15 47 11 59 -110 0 0 46 9 50 11 9 5 52 149 -30 45 58 40 46 21 1 45 14 12 47 6 1 -109 0 0 46 3 35 11 9 12 52 150 -30 45 52 24 46 14 47 45 7 54 46 59 49 -108 0 0 45 57 6 11 9 20 53 152 -29 45 45 54 46 8 18 45 1 22 46 53 23 -107 0 0 45 50 21 11 9 27 53 153 -28 45 39 10 46 1 35 44 54 35 46 46 41 -106 0 0 45 43 23 11 9 34 54 155 -28 45 32 10 45 54 37 44 47 33 46 39 46 -105 0 0 45 36 9 11 9 41 54 156 -27 45 24 56 45 47 24 44 40 17 46 32 36 -104 0 0 45 28 41 11 9 49 54 158 -26 45 17 28 45 39 57 44 32 46 46 25 11 -103 0 0 45 20 59 11 9 56 55 160 -25 45 9 45 45 32 15 44 25 0 46 17 32 -102 0 0 45 13 2 11 10 3 55 161 -25 45 1 47 45 24 18 44 16 59 46 9 38 -101 0 0 45 4 50 11 10 11 55 163 -24 44 53 34 45 16 7 44 8 44 46 1 30 -100 0 0 44 56 24 11 10 18 56 165 -23 44 45 8 45 7 42 44 0 15 45 53 7 - 99 0 0 44 47 44 11 10 26 56 166 -23 44 36 26 44 59 2 43 51 31 45 44 30 - 98 0 0 44 38 48 11 10 34 56 168 -22 44 27 31 44 50 8 43 42 32 45 35 39 - 97 0 0 44 29 39 11 10 42 57 170 -21 44 18 20 44 40 59 43 33 19 45 26 33 - 96 0 0 44 20 15 11 10 49 57 172 -20 44 8 56 44 31 36 43 23 51 45 17 13 - 95 0 0 44 10 37 11 10 57 57 174 -20 43 59 17 44 21 58 43 14 9 45 7 39 - 94 0 0 44 0 44 11 11 5 57 175 -19 43 49 23 44 12 7 43 4 13 44 57 50 - 93 0 0 43 50 38 11 11 13 58 177 -18 43 39 16 44 2 1 42 54 3 44 47 47 - 92 0 0 43 40 17 11 11 21 58 179 -17 43 28 54 43 51 41 42 43 38 44 37 30 - 91 0 0 43 29 42 11 11 29 58 181 -17 43 18 18 43 41 6 42 32 59 44 26 59 - 90 0 0 43 18 53 11 11 37 58 183 -16 43 7 29 43 30 18 42 22 6 44 16 14 - 89 0 0 43 7 50 11 11 45 58 185 -15 42 56 25 43 19 16 42 10 59 44 5 15 - 88 0 0 42 56 33 11 11 54 58 187 -14 42 45 7 43 8 0 41 59 38 43 54 2 - 87 0 0 42 45 2 11 12 2 59 189 -14 42 33 36 42 56 30 41 48 4 43 42 36 - 86 0 0 42 33 18 11 12 10 59 191 -13 42 21 51 42 44 46 41 36 16 43 30 55 - 85 0 0 42 21 20 11 12 18 59 193 -12 42 9 52 42 32 49 41 24 14 43 19 1 - 84 0 0 42 9 8 11 12 27 59 195 -11 41 57 40 42 20 39 41 11 58 43 6 54 - 83 0 0 41 56 44 11 12 35 59 197 -10 41 45 14 42 8 15 40 59 30 42 54 33 - 82 0 0 41 44 6 11 12 44 59 199 -10 41 32 35 41 55 37 40 46 48 42 41 59 - 81 0 0 41 31 14 11 12 52 59 201 -9 41 19 43 41 42 47 40 33 53 42 29 12 - 80 0 0 41 18 10 11 13 0 58 203 -8 41 6 39 41 29 44 40 20 45 42 16 12 - 79 0 0 41 4 54 11 13 9 58 205 -7 40 53 21 41 16 28 40 7 24 42 2 59 - 78 0 0 40 51 24 11 13 18 58 207 -6 40 39 51 41 2 59 39 53 51 41 49 33 - 77 0 0 40 37 42 11 13 26 58 209 -6 40 26 8 40 49 18 39 40 5 41 35 55 - 76 0 0 40 23 48 11 13 35 58 211 -5 40 12 13 40 35 24 39 26 7 41 22 5 - 75 0 0 40 9 41 11 13 43 58 213 -4 39 58 6 40 21 18 39 11 57 41 8 2 - 74 0 0 39 55 23 11 13 52 57 215 -3 39 43 47 40 7 1 38 57 36 40 53 47 - 73 0 0 39 40 53 11 14 1 57 217 -2 39 29 16 39 52 31 38 43 2 40 39 21 - 72 0 0 39 26 11 11 14 9 57 218 -1 39 14 34 39 37 51 38 28 17 40 24 43 - 71 0 0 39 11 18 11 14 18 56 220 -1 38 59 40 39 22 58 38 13 21 40 9 53 Uncertainty in time = +/- 8 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 0787-00741-1 * constellation : Canis Minor * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 51 57.5031 DE: +11 30 04.137 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .021 ) * V mag [mag]: 10.3 * B mag [mag]: 10.7 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3642) Frieden approx. diameter [km]: 35 approx. diameter ["]: .021 distance from Earth [AU]: 2.24600 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 575 number of rejected observations: 14 time covered by the observations: 1936 Mar 27 - 2007 Nov 20 1 sigma uncertainty ellipse (major, minor, PA): 0.048, 0.035, 83° remarks: * orbital elements for (3642) Frieden : Mean anomaly = 314.66524746 deg Arg. of pericenter = 16.36164281 deg Long. of node = 131.33334149 deg Inclination = 13.47078682 deg Eccentricity = 0.08137491 Semimajor axis = 2.78704268 AU Perihelion dist = 2.56024732 AU Mag: H = 11.04, G = 0.15 Epoch of elements : MJD 55137.46700000 TDT (2009 Nov 02.467) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 2 3642 Frieden 11h 12.4m UT 10.3 7 51 57.503 11 30 4.14TYC 0787-00741-1 10.7 16.1 35 3.3 2.246 1.558 -4.55 -91.9853 11.503 7.79 -14.87 11.2075 0.10180 0.50783 5.85196 -1.16165 -0.00549 0.00126 2000 313.08350820091026.00000 16.361643131.333341 13.4707870.08137491 2.7870427 2.560247311.2 5.00.15 RATE 2.1183060 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.052 0.041 84 3.00 0.043 0 54581.5020091102_0741-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 09:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org