IOTA/IOTA-ES occultation update for (859) Bouzareah / TYC 6401-00359-1 event on 2002 Sep 20, 08:18 UT Visible from W USA Summary ------- On the morning of 2002 Sep 20 UT, the 74 km diameter asteroid (859) Bouzareah will occult a 10.2 mag star in the constellation Aquarius for observers along a path across W USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.2 mag to 14.4 mag (the magnitude of the asteroid) for at most 6.1 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, TMO astrometry for the asteroid kindly provided by Bill Owen, astrometry for the asteroid kindly provided by Gordon Garradd, historical astrometry from AstDys, and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 71 * date and approx. time of event: 2002 Sep 20, 08:12 - 2002 Sep 20, 08:21 UT * magnitude of target star: 10.2 * magnitude drop [mag]: 4.2 * estimated maximum duration [s]: 6.1 * Moon: 98 % sunlit, 10° distance * Sun: 158° distance * rough path description: W USA The occultation path -------------------- * approximate projected width [km]: 136 * 1 sigma uncertainty interval [path widths]: +/- 0.81 * 1 sigma uncertainty interval [seconds]: +/- 6.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .051 +/- .040) * 1 sigma uncertainty ellipse (major, minor, PA): ( .052", .039", 73° ) * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.oz.net/~stevepr/Asteroids/asteroid.htm Path Coordinates: Occultation of TYC 6401-00359-1 by 859 Bouzareah on 2002 Sep 20 Centre Altitude Path Limits E. Longitude Latitude U.T. star sun Limit 1 Limit 2 o ' " o ' " h m s o o o ' " o ' " Latitude Latitude 161 0 0 .. .. .. .. .. .. .. .. .. .. .. 48 41 15 162 0 0 48 59 27 8 21 35 1 -12 49 44 44 48 15 14 163 0 0 48 33 27 8 21 35 1 -12 49 18 29 47 49 29 164 0 0 48 7 43 8 21 35 2 -13 48 52 30 47 24 0 165 0 0 47 42 17 8 21 34 3 -14 48 26 48 46 58 48 166 0 0 47 17 8 8 21 33 4 -15 48 1 24 46 33 54 167 0 0 46 52 18 8 21 32 5 -15 47 36 18 46 9 18 168 0 0 46 27 48 8 21 31 5 -16 47 11 33 45 45 2 169 0 0 46 3 37 8 21 30 6 -17 46 47 8 45 21 5 170 0 0 45 39 48 8 21 28 7 -18 46 23 4 44 57 29 171 0 0 45 16 20 8 21 27 8 -18 45 59 21 44 34 15 172 0 0 44 53 15 8 21 25 8 -19 45 36 2 44 11 23 173 0 0 44 30 32 8 21 23 9 -20 45 13 5 43 48 54 174 0 0 44 8 13 8 21 20 10 -21 44 50 32 43 26 47 175 0 0 43 46 18 8 21 18 11 -22 44 28 24 43 5 5 176 0 0 43 24 48 8 21 15 12 -22 44 6 40 42 43 47 177 0 0 43 3 42 8 21 13 12 -23 43 45 22 42 22 54 178 0 0 42 43 3 8 21 10 13 -24 43 24 30 42 2 26 179 0 0 42 22 49 8 21 6 14 -25 43 4 4 41 42 25 180 0 0 42 3 3 8 21 3 15 -26 42 44 5 41 22 49 -179 0 0 41 43 43 8 20 60 15 -26 42 24 33 41 3 41 -178 0 0 41 24 50 8 20 56 16 -27 42 5 29 40 44 59 -177 0 0 41 6 26 8 20 52 17 -28 41 46 53 40 26 45 -176 0 0 40 48 29 8 20 48 17 -29 41 28 46 40 8 59 -175 0 0 40 31 1 8 20 44 18 -30 41 11 7 39 51 41 -174 0 0 40 14 2 8 20 40 19 -30 40 53 57 39 34 51 -173 0 0 39 57 32 8 20 35 19 -31 40 37 17 39 18 30 -172 0 0 39 41 31 8 20 31 20 -32 40 21 7 39 2 39 -171 0 0 39 25 60 8 20 26 21 -33 40 5 26 38 47 17 -170 0 0 39 10 59 8 20 21 21 -34 39 50 16 38 32 24 -169 0 0 38 56 28 8 20 16 22 -34 39 35 37 38 18 1 -168 0 0 38 42 27 8 20 11 23 -35 39 21 27 38 4 9 -167 0 0 38 28 57 8 20 6 23 -36 39 7 49 37 50 46 -166 0 0 38 15 58 8 20 1 24 -37 38 54 42 37 37 54 -165 0 0 38 3 29 8 19 55 24 -37 38 42 6 37 25 33 -164 0 0 37 51 32 8 19 49 25 -38 38 30 2 37 13 42 -163 0 0 37 40 6 8 19 44 26 -39 38 18 29 37 2 23 -162 0 0 37 29 11 8 19 38 26 -39 38 7 28 36 51 34 -161 0 0 37 18 48 8 19 32 27 -40 37 56 59 36 41 17 -160 0 0 37 8 57 8 19 26 27 -41 37 47 2 36 31 31 -159 0 0 36 59 37 8 19 20 28 -41 37 37 37 36 22 17 -158 0 0 36 50 50 8 19 13 28 -42 37 28 44 36 13 34 -157 0 0 36 42 34 8 19 7 28 -43 37 20 23 36 5 23 -156 0 0 36 34 50 8 19 1 29 -43 37 12 35 35 57 44 -155 0 0 36 27 39 8 18 54 29 -44 37 5 19 35 50 36 -154 0 0 36 20 59 8 18 48 30 -45 36 58 36 35 44 1 -153 0 0 36 14 52 8 18 41 30 -45 36 52 25 35 37 57 -152 0 0 36 9 17 8 18 34 30 -46 36 46 47 35 32 25 -151 0 0 36 4 15 8 18 27 31 -46 36 41 41 35 27 26 -150 0 0 35 59 45 8 18 21 31 -47 36 37 9 35 22 58 -149 0 0 35 55 47 8 18 14 31 -47 36 33 9 35 19 3 -148 0 0 35 52 22 8 18 7 32 -48 36 29 42 35 15 40 -147 0 0 35 49 30 8 17 60 32 -48 36 26 48 35 12 49 -146 0 0 35 47 10 8 17 53 32 -49 36 24 26 35 10 30 -145 0 0 35 45 22 8 17 46 32 -49 36 22 38 35 8 44 -144 0 0 35 44 8 8 17 38 32 -50 36 21 22 35 7 30 -143 0 0 35 43 25 8 17 31 33 -50 36 20 39 35 6 48 -142 0 0 35 43 15 8 17 24 33 -50 36 20 29 35 6 38 -141 0 0 35 43 38 8 17 17 33 -51 36 20 52 35 7 1 -140 0 0 35 44 33 8 17 10 33 -51 36 21 48 35 7 56 -139 0 0 35 46 1 8 17 2 33 -51 36 23 16 35 9 23 -138 0 0 35 48 1 8 16 55 33 -51 36 25 18 35 11 22 -137 0 0 35 50 34 8 16 48 33 -52 36 27 52 35 13 54 -136 0 0 35 53 39 8 16 41 33 -52 36 30 59 35 16 57 -135 0 0 35 57 17 8 16 33 33 -52 36 34 38 35 20 33 -134 0 0 36 1 27 8 16 26 33 -52 36 38 50 35 24 40 -133 0 0 36 6 9 8 16 19 33 -52 36 43 35 35 29 20 -132 0 0 36 11 23 8 16 12 33 -52 36 48 52 35 34 32 -131 0 0 36 17 10 8 16 5 33 -52 36 54 42 35 40 15 -130 0 0 36 23 29 8 15 57 32 -52 37 1 5 35 46 31 -129 0 0 36 30 19 8 15 50 32 -52 37 7 59 35 53 18 -128 0 0 36 37 42 8 15 43 32 -52 37 15 26 36 0 36 -127 0 0 36 45 37 8 15 36 32 -52 37 23 25 36 8 26 -126 0 0 36 54 3 8 15 29 31 -52 37 31 56 36 16 48 -125 0 0 37 3 1 8 15 22 31 -52 37 40 59 36 25 41 -124 0 0 37 12 30 8 15 15 31 -52 37 50 34 36 35 5 -123 0 0 37 22 31 8 15 9 31 -52 38 0 41 36 45 1 -122 0 0 37 33 3 8 15 2 30 -51 38 11 19 36 55 27 -121 0 0 37 44 7 8 14 55 30 -51 38 22 29 37 6 24 -120 0 0 37 55 41 8 14 48 30 -51 38 34 10 37 17 52 -119 0 0 38 7 46 8 14 42 29 -50 38 46 22 37 29 51 -118 0 0 38 20 22 8 14 35 29 -50 38 59 5 37 42 20 -117 0 0 38 33 28 8 14 29 28 -50 39 12 19 37 55 19 -116 0 0 38 47 5 8 14 23 28 -49 39 26 4 38 8 48 -115 0 0 39 1 11 8 14 16 27 -49 39 40 19 38 22 47 -114 0 0 39 15 48 8 14 10 27 -48 39 55 4 38 37 15 -113 0 0 39 30 54 8 14 4 26 -48 40 10 19 38 52 13 -112 0 0 39 46 30 8 13 58 26 -47 40 26 4 39 7 39 -111 0 0 40 2 34 8 13 53 25 -47 40 42 18 39 23 35 -110 0 0 40 19 8 8 13 47 25 -46 40 59 1 39 39 59 -109 0 0 40 36 10 8 13 41 24 -46 41 16 14 39 56 52 -108 0 0 40 53 40 8 13 36 24 -45 41 33 54 40 14 12 -107 0 0 41 11 38 8 13 31 23 -45 41 52 4 40 32 0 -106 0 0 41 30 4 8 13 25 22 -44 42 10 40 40 50 16 -105 0 0 41 48 57 8 13 20 22 -44 42 29 45 41 8 58 -104 0 0 42 8 17 8 13 15 21 -43 42 49 17 41 28 7 -103 0 0 42 28 4 8 13 11 21 -42 43 9 15 41 47 42 -102 0 0 42 48 16 8 13 6 20 -42 43 29 39 42 7 42 -101 0 0 43 8 54 8 13 2 19 -41 43 50 30 42 28 8 -100 0 0 43 29 57 8 12 57 18 -40 44 11 46 42 48 59 - 99 0 0 43 51 24 8 12 53 18 -40 44 33 26 43 10 14 - 98 0 0 44 13 16 8 12 49 17 -39 44 55 31 43 31 53 - 97 0 0 44 35 31 8 12 45 16 -38 45 17 60 43 53 56 - 96 0 0 44 58 9 8 12 41 16 -37 45 40 52 44 16 21 - 95 0 0 45 21 9 8 12 38 15 -37 46 4 6 44 39 8 - 94 0 0 45 44 31 8 12 35 14 -36 46 27 42 45 2 17 - 93 0 0 46 8 14 8 12 31 14 -35 46 51 40 45 25 46 - 92 0 0 46 32 18 8 12 28 13 -34 47 15 58 45 49 36 - 91 0 0 46 56 41 8 12 25 12 -34 47 40 37 46 13 45 - 90 0 0 47 21 24 8 12 23 11 -33 48 5 34 46 38 14 - 89 0 0 47 46 24 8 12 20 11 -32 48 30 50 47 2 60 - 88 0 0 48 11 42 8 12 18 10 -31 48 56 23 47 28 4 - 87 0 0 48 37 17 8 12 16 9 -31 49 22 13 47 53 24 - 86 0 0 49 3 7 8 12 14 8 -30 49 48 19 48 18 60 - 85 0 0 49 29 12 8 12 12 7 -29 50 14 40 48 44 50 - 84 0 0 49 55 31 8 12 10 7 -28 50 41 15 49 10 55 - 83 0 0 50 22 4 8 12 9 6 -28 51 8 3 49 37 13 - 82 0 0 50 48 48 8 12 8 5 -27 51 35 3 50 3 42 - 81 0 0 51 15 44 8 12 7 4 -26 52 2 14 50 30 24 - 80 0 0 51 42 50 8 12 6 4 -25 52 29 36 50 57 15 - 79 0 0 52 10 4 8 12 5 3 -24 52 57 6 51 24 15 - 78 0 0 52 37 27 8 12 5 2 -24 53 24 45 51 51 24 - 77 0 0 53 4 57 8 12 4 1 -23 53 52 30 52 18 40 - 76 0 0 53 32 33 8 12 4 1 -22 54 20 21 52 46 2 - 75 0 0 .. .. .. .. .. .. .. .. .. .. .. 53 13 28 Data for the target star ------------------------ * name: TYC 6401-00359-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 23 15 48.0952 DE: -21 17 42.021 * position source: UCAC * standard error: RA,DE ["]: ( .030, .030 ) * V mag [mag]: 10.2 * remarks: Data for the minor planet ------------------------- * general information: number,name: (859) Bouzareah approx. diameter [km]: 74 approx. diameter ["]: .049 * orbital information: orbit source: Preston source of used astrometry: FASTT TMO Garradd Astdys number of used observations: 237 number of rejected observations: 23 time covered by the observations: 1916 Sep 21 - 2002 Sep 03 1 sigma uncertainty ellipse (major, minor, PA): 0.043, 0.025, 64° remarks: * orbital elements for (859) Bouzareah : Mean anomaly = 307.19425006 deg Arg. of pericenter = 12.90593274 deg Long. of node = 36.03216545 deg Inclination = 13.54458387 deg Eccentricity = 0.10474415 Semimajor axis = 3.22833431 AU Perihelion dist = 2.89018516 AU Mag: H = 9.81, G = 0.15 Epoch of elements : MJD 52537.34600000 TDT (2002 Sep 20.346) ------ occelmnt file for Occult BEGIN ------------------------------------ 2002 Sep 20 859 Bouzareah 8h 16.8m UT 01-00359-1 10.2 23 15 48.095-21 17 42.02TYC 6401-00359-1 14.4 74 6.1 2.093 -2.052 -1.41 225.688 -21.294 54.18 1.11 8.2804 -.04156 .83667 -6.82758 -0.33833 0.00085 0.00196 2000 305.9460412002 913.00000 12.905933 36.032165 13.5445840.104744153.228334312.890185169.815 0.15 RATE 1.6991680 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ------ occelmnt file for Occult END ------------------------------------ ============================================ Calculator (s): Steve Preston Date of update: 2002 Sep 12, 02:44 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@ acm.org