IOTA/IOTA-ES occultation update for (1024) Hale / TYC 2372-00323 event on 2002 Feb 26, 03:35 UT Visible from USA (California to Georgia) Summary ------- On the early morning of 2002 Feb 26 UT, the 41 km diameter asteroid (1024) Hale will occult a 10.8 mag star in the constellation Perseus for observers along a path across USA (California to Georgia). In the case of an occultation, the combined light of the asteroid and the star will drop by 4.9 mag to 15.7 mag (the magnitude of the asteroid) for at most 2.6 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Ron Stone, historical astrometry from AstDys, and the following catalogs for the star position: Tycho-2. The event at a glimpse ---------------------- * date and approx. time of event: 2002 Feb 26, 03:28 - 03:42 UT * magnitude of target star: 10.8 * magnitude drop [mag]: 4.9 * estimated maximum duration [s]: 2.6 * Moon: 98 % sunlit, 69° distance * Sun: 93° distance * rough path description: USA (California to Georgia) The occultation path -------------------- * approximate projected width [km]: 41 * 1 sigma uncertainty interval [path widths]: +/- 2.54 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .056 +/- .058) * 1 sigma uncertainty ellipse (major, minor, PA): ( .054", .051", 85° ) * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.oz.net/~stevepr/Asteroids/asteroid.htm Path Coordinates: Occultation of TYC 2372-00323 by 1024 Hale on 2002 Feb 26 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 131 0 0 - 3 25 5 3 28 49 0 85 .. .. .. - 3 11 55 132 0 0 - 2 47 41 3 28 49 1 84 - 3 0 53 - 2 34 28 133 0 0 - 2 9 58 3 28 50 2 83 - 2 23 12 - 1 56 44 134 0 0 - 1 31 58 3 28 50 4 82 - 1 45 13 - 1 18 43 135 0 0 - 0 53 43 3 28 51 5 81 - 1 6 59 - 0 40 26 136 0 0 - 0 15 12 3 28 51 6 80 - 0 28 30 - 0 1 54 137 0 0 0 23 32 3 28 52 7 79 0 10 13 0 36 52 138 0 0 1 2 28 3 28 54 8 78 0 49 8 1 15 49 139 0 0 1 41 36 3 28 55 10 77 1 28 14 1 54 58 140 0 0 2 20 53 3 28 56 11 76 2 7 31 2 34 17 141 0 0 3 0 19 3 28 58 12 75 2 46 56 3 13 43 142 0 0 3 39 53 3 28 60 13 73 3 26 28 3 53 17 143 0 0 4 19 32 3 29 2 14 72 4 6 6 4 32 57 144 0 0 4 59 15 3 29 4 16 71 4 45 49 5 12 41 145 0 0 5 39 1 3 29 6 17 70 5 25 35 5 52 28 146 0 0 6 18 50 3 29 9 18 69 6 5 23 6 32 17 147 0 0 6 58 38 3 29 12 19 68 6 45 11 7 12 5 148 0 0 7 38 25 3 29 14 20 66 7 24 58 7 51 53 149 0 0 8 18 10 3 29 17 22 65 8 4 43 8 31 37 150 0 0 8 57 51 3 29 21 23 64 8 44 24 9 11 18 151 0 0 9 37 26 3 29 24 24 63 9 23 59 9 50 53 152 0 0 10 16 54 3 29 28 25 62 10 3 28 10 30 21 153 0 0 10 56 15 3 29 31 26 60 10 42 49 11 9 41 154 0 0 11 35 26 3 29 35 27 59 11 22 0 11 48 51 155 0 0 12 14 25 3 29 39 29 58 12 1 1 12 27 51 156 0 0 12 53 13 3 29 43 30 57 12 39 49 13 6 38 157 0 0 13 31 47 3 29 47 31 56 13 18 24 13 45 11 158 0 0 14 10 7 3 29 52 32 55 13 56 45 14 23 29 159 0 0 14 48 10 3 29 56 33 53 14 34 49 15 1 31 160 0 0 15 25 56 3 30 1 35 52 15 12 36 15 39 16 161 0 0 16 3 24 3 30 5 36 51 15 50 5 16 16 43 162 0 0 16 40 32 3 30 10 37 50 16 27 15 16 53 49 163 0 0 17 17 19 3 30 15 38 49 17 4 4 17 30 35 164 0 0 17 53 45 3 30 20 39 48 17 40 31 18 6 60 165 0 0 18 29 48 3 30 25 40 47 18 16 36 18 43 1 166 0 0 19 5 28 3 30 30 41 45 18 52 18 19 18 39 167 0 0 19 40 43 3 30 36 42 44 19 27 34 19 53 52 168 0 0 20 15 33 3 30 41 44 43 20 2 26 20 28 40 169 0 0 20 49 56 3 30 47 45 42 20 36 51 21 3 1 170 0 0 21 23 52 3 30 52 46 41 21 10 50 21 36 55 171 0 0 21 57 21 3 30 58 47 40 21 44 21 22 10 22 172 0 0 22 30 21 3 31 4 48 39 22 17 23 22 43 20 173 0 0 23 2 53 3 31 9 49 38 22 49 57 23 15 49 174 0 0 23 34 54 3 31 15 50 37 23 22 1 23 47 48 175 0 0 24 6 26 3 31 21 51 35 23 53 35 24 19 18 176 0 0 24 37 27 3 31 27 52 34 24 24 38 24 50 16 177 0 0 25 7 57 3 31 33 53 33 24 55 10 25 20 44 178 0 0 25 37 55 3 31 39 54 32 25 25 11 25 50 39 179 0 0 26 7 21 3 31 45 55 31 25 54 40 26 20 3 180 0 0 26 36 16 3 31 51 56 30 26 23 37 26 48 55 -179 0 0 27 4 38 3 31 57 57 29 26 52 1 27 17 15 -178 0 0 27 32 27 3 32 3 58 28 27 19 53 27 45 1 -177 0 0 27 59 43 3 32 9 59 27 27 47 12 28 12 15 -176 0 0 28 26 27 3 32 15 60 26 28 13 58 28 38 56 -175 0 0 28 52 37 3 32 22 61 25 28 40 10 29 5 3 -174 0 0 29 18 13 3 32 28 62 24 29 5 49 29 30 37 -173 0 0 29 43 16 3 32 34 63 23 29 30 55 29 55 38 -172 0 0 30 7 46 3 32 40 64 22 29 55 28 30 20 5 -171 0 0 30 31 43 3 32 46 65 21 30 19 26 30 43 59 -170 0 0 30 55 5 3 32 52 66 20 30 42 52 31 7 19 -169 0 0 31 17 55 3 32 59 67 19 31 5 44 31 30 6 -168 0 0 31 40 11 3 33 5 68 18 31 28 2 31 52 19 -167 0 0 32 1 53 3 33 11 69 17 31 49 47 32 13 59 -166 0 0 32 23 2 3 33 17 70 16 32 10 58 32 35 6 -165 0 0 32 43 38 3 33 23 71 16 32 31 37 32 55 40 -164 0 0 33 3 41 3 33 30 71 15 32 51 42 33 15 40 -163 0 0 33 23 10 3 33 36 72 14 33 11 14 33 35 7 -162 0 0 33 42 7 3 33 42 73 13 33 30 13 33 54 2 -161 0 0 34 0 31 3 33 48 74 12 33 48 39 34 12 24 -160 0 0 34 18 23 3 33 54 75 11 34 6 33 34 30 13 -159 0 0 34 35 42 3 34 0 76 10 34 23 54 34 47 30 -158 0 0 34 52 29 3 34 6 76 9 34 40 43 35 4 15 -157 0 0 35 8 43 3 34 12 77 8 34 56 60 35 20 27 -156 0 0 35 24 26 3 34 18 78 7 35 12 45 35 36 8 -155 0 0 35 39 37 3 34 24 79 7 35 27 58 35 51 17 -154 0 0 35 54 16 3 34 30 79 6 35 42 39 36 5 54 -153 0 0 36 8 24 3 34 36 80 5 35 56 49 36 20 0 -152 0 0 36 22 1 3 34 42 81 4 36 10 27 36 33 35 -151 0 0 36 35 7 3 34 48 81 3 36 23 35 36 46 39 -150 0 0 36 47 42 3 34 54 82 2 36 36 11 36 59 12 -149 0 0 36 59 46 3 35 0 82 1 36 48 17 37 11 15 -148 0 0 37 11 20 3 35 6 83 1 36 59 52 37 22 47 -147 0 0 37 22 23 3 35 12 83 0 37 10 57 37 33 49 -146 0 0 37 32 56 3 35 18 83 -1 37 21 32 37 44 21 -145 0 0 37 42 59 3 35 24 83 -2 37 31 36 37 54 22 -144 0 0 37 52 33 3 35 29 83 -3 37 41 11 38 3 54 -143 0 0 38 1 36 3 35 35 83 -4 37 50 16 38 12 57 -142 0 0 38 10 10 3 35 41 83 -4 37 58 51 38 21 30 -141 0 0 38 18 15 3 35 47 83 -5 38 6 57 38 29 33 -140 0 0 38 25 51 3 35 52 82 -6 38 14 34 38 37 8 -139 0 0 38 32 57 3 35 58 82 -7 38 21 41 38 44 13 -138 0 0 38 39 35 3 36 4 82 -8 38 28 20 38 50 50 -137 0 0 38 45 43 3 36 9 81 -8 38 34 29 38 56 58 -136 0 0 38 51 23 3 36 15 80 -9 38 40 10 39 2 37 -135 0 0 38 56 35 3 36 20 80 -10 38 45 22 39 7 47 -134 0 0 39 1 17 3 36 26 79 -11 38 50 6 39 12 29 -133 0 0 39 5 32 3 36 31 79 -12 38 54 21 39 16 43 -132 0 0 39 9 18 3 36 37 78 -12 38 58 7 39 20 29 -131 0 0 39 12 36 3 36 42 77 -13 39 1 25 39 23 46 -130 0 0 39 15 25 3 36 48 77 -14 39 4 15 39 26 35 -129 0 0 39 17 47 3 36 53 76 -15 39 6 37 39 28 56 -128 0 0 39 19 40 3 36 59 75 -16 39 8 31 39 30 49 -127 0 0 39 21 5 3 37 4 75 -16 39 9 56 39 32 14 -126 0 0 39 22 2 3 37 10 74 -17 39 10 54 39 33 11 -125 0 0 39 22 32 3 37 15 73 -18 39 11 23 39 33 40 -124 0 0 39 22 33 3 37 20 72 -19 39 11 24 39 33 42 -123 0 0 39 22 6 3 37 26 72 -20 39 10 57 39 33 15 -122 0 0 39 21 11 3 37 31 71 -20 39 10 2 39 32 21 -121 0 0 39 19 49 3 37 36 70 -21 39 8 40 39 30 58 -120 0 0 39 17 58 3 37 41 69 -22 39 6 49 39 29 8 -119 0 0 39 15 39 3 37 47 69 -23 39 4 30 39 26 49 -118 0 0 39 12 53 3 37 52 68 -23 39 1 43 39 24 3 -117 0 0 39 9 38 3 37 57 67 -24 38 58 27 39 20 49 -116 0 0 39 5 55 3 38 2 66 -25 38 54 44 39 17 6 -115 0 0 39 1 44 3 38 7 66 -26 38 50 32 39 12 56 -114 0 0 38 57 4 3 38 12 65 -27 38 45 52 39 8 17 -113 0 0 38 51 56 3 38 17 64 -27 38 40 43 39 3 10 -112 0 0 38 46 20 3 38 23 63 -28 38 35 6 38 57 34 -111 0 0 38 40 15 3 38 28 63 -29 38 29 0 38 51 30 -110 0 0 38 33 42 3 38 33 62 -30 38 22 26 38 44 58 -109 0 0 38 26 40 3 38 38 61 -31 38 15 23 38 37 57 -108 0 0 38 19 9 3 38 43 60 -31 38 7 51 38 30 27 -107 0 0 38 11 9 3 38 48 59 -32 37 59 50 38 22 28 -106 0 0 38 2 40 3 38 52 59 -33 37 51 20 38 14 0 -105 0 0 37 53 42 3 38 57 58 -34 37 42 20 38 5 3 -104 0 0 37 44 14 3 39 2 57 -35 37 32 51 37 55 37 -103 0 0 37 34 17 3 39 7 56 -36 37 22 53 37 45 42 -102 0 0 37 23 51 3 39 12 55 -36 37 12 25 37 35 16 -101 0 0 37 12 54 3 39 17 55 -37 37 1 27 37 24 22 -100 0 0 37 1 28 3 39 22 54 -38 36 49 59 37 12 57 - 99 0 0 36 49 32 3 39 26 53 -39 36 38 1 37 1 2 - 98 0 0 36 37 5 3 39 31 52 -40 36 25 33 36 48 37 - 97 0 0 36 24 8 3 39 36 51 -41 36 12 35 36 35 42 - 96 0 0 36 10 41 3 39 40 50 -41 35 59 5 36 22 17 - 95 0 0 35 56 43 3 39 45 49 -42 35 45 6 36 8 20 - 94 0 0 35 42 14 3 39 50 49 -43 35 30 35 35 53 53 - 93 0 0 35 27 14 3 39 54 48 -44 35 15 33 35 38 55 - 92 0 0 35 11 43 3 39 59 47 -45 34 59 60 35 23 26 - 91 0 0 34 55 41 3 40 3 46 -46 34 43 56 35 7 26 - 90 0 0 34 39 7 3 40 8 45 -47 34 27 20 34 50 54 - 89 0 0 34 22 1 3 40 12 44 -47 34 10 12 34 33 51 - 88 0 0 34 4 24 3 40 16 43 -48 33 52 33 34 16 16 - 87 0 0 33 46 16 3 40 21 43 -49 33 34 22 33 58 9 - 86 0 0 33 27 35 3 40 25 42 -50 33 15 39 33 39 31 - 85 0 0 33 8 22 3 40 29 41 -51 32 56 24 33 20 20 - 84 0 0 32 48 37 3 40 33 40 -52 32 36 36 33 0 37 - 83 0 0 32 28 19 3 40 38 39 -53 32 16 17 32 40 22 - 82 0 0 32 7 30 3 40 42 38 -54 31 55 25 32 19 35 - 81 0 0 31 46 8 3 40 46 37 -55 31 34 0 31 58 15 - 80 0 0 31 24 13 3 40 50 36 -56 31 12 3 31 36 23 - 79 0 0 31 1 46 3 40 53 35 -56 30 49 34 31 13 58 - 78 0 0 30 38 47 3 40 57 34 -57 30 26 32 30 51 1 - 77 0 0 30 15 15 3 41 1 33 -58 30 2 58 30 27 32 - 76 0 0 29 51 10 3 41 5 32 -59 29 38 51 30 3 30 - 75 0 0 29 26 33 3 41 8 31 -60 29 14 12 29 38 56 - 74 0 0 29 1 24 3 41 12 30 -61 28 48 60 29 13 49 - 73 0 0 28 35 43 3 41 15 29 -62 28 23 16 28 48 10 - 72 0 0 28 9 30 3 41 19 28 -63 27 57 0 28 21 59 - 71 0 0 27 42 44 3 41 22 27 -64 27 30 13 27 55 16 - 70 0 0 27 15 27 3 41 25 26 -65 27 2 53 27 28 1 - 69 0 0 26 47 38 3 41 28 25 -66 26 35 2 27 0 15 - 68 0 0 26 19 18 3 41 31 24 -67 26 6 40 26 31 58 - 67 0 0 25 50 27 3 41 34 23 -68 25 37 46 26 3 9 - 66 0 0 25 21 6 3 41 37 22 -69 25 8 22 25 33 50 - 65 0 0 24 51 14 3 41 40 21 -70 24 38 28 25 4 0 - 64 0 0 24 20 52 3 41 43 20 -71 24 8 4 24 33 40 - 63 0 0 23 50 1 3 41 45 19 -72 23 37 10 24 2 51 - 62 0 0 23 18 40 3 41 47 18 -73 23 5 48 23 31 33 - 61 0 0 22 46 51 3 41 50 17 -74 22 33 57 22 59 46 - 60 0 0 22 14 34 3 41 52 16 -75 22 1 38 22 27 32 - 59 0 0 21 41 50 3 41 54 15 -76 21 28 51 21 54 49 - 58 0 0 21 8 39 3 41 56 14 -76 20 55 38 21 21 40 - 57 0 0 20 35 2 3 41 58 13 -77 20 21 60 20 48 5 - 56 0 0 20 0 60 3 41 59 12 -78 19 47 55 20 14 5 - 55 0 0 19 26 33 3 42 1 10 -79 19 13 27 19 39 39 - 54 0 0 18 51 42 3 42 2 9 -80 18 38 34 19 4 50 - 53 0 0 18 16 28 3 42 3 8 -81 18 3 19 18 29 38 - 52 0 0 17 40 53 3 42 4 7 -81 17 27 42 17 54 4 - 51 0 0 17 4 56 3 42 5 6 -82 16 51 43 17 18 9 - 50 0 0 16 28 39 3 42 6 5 -82 16 15 25 16 41 53 - 49 0 0 15 52 3 3 42 7 4 -82 15 38 48 16 5 18 - 48 0 0 15 15 9 3 42 7 3 -82 15 1 52 15 28 25 - 47 0 0 14 37 58 3 42 7 1 -82 14 24 40 14 51 15 - 46 0 0 14 0 30 3 42 8 0 -82 13 47 12 14 13 49 Data for the target star ------------------------ * name: TYC 2372-00323 * constellation : Perseus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 04 27 30.5476 DE: +31 38 19.536 * position source: Tycho-2 * standard error: RA,DE ["]: ( .051, .055 ) * V mag [mag]: 10.8 * remarks: Data for the minor planet ------------------------- * general information: number,name: (1024) Hale approx. diameter [km]: 41 approx. diameter ["]: .023 * orbital information: orbit source: Preston source of used astrometry: FASTT Astdys number of used observations: 293 number of rejected observations: 21 time covered by the observations: 1928 Dec 08 - 2002 Feb 07 1 sigma uncertainty ellipse (major, minor, PA): 0.023, 0.020, 139° remarks: * orbital elements for (1024) Hale : Mean anomaly = 60.76063097 deg Arg. of pericenter = 308.37782272 deg Long. of node = 59.14416791 deg Inclination = 16.08129373 deg Eccentricity = 0.22204687 Semimajor axis = 2.87021293 AU Perihelion dist = 2.23289113 AU Mag: H = 10.79, G = 0.15 Epoch of elements : MJD 52331.14900000 TDT (2002 Feb 26.149) ------ occelmnt file for Occult BEGIN ------------------------------------ 2002 Feb 26 1024 Hale 3h 35.5m UT 2372-00323 10.8 4 27 30.548 31 38 19.54TYC 2372-00323 15.7 41 2.6 2.445 2.486 5.66 -142.809 31.637 129.38 -8.80 3.5911 -.02008 .10468 8.82823 1.57526 0.00573 0.00087 2000 60.52773972002 225.00000308.37782259.144167916.08129370.222046862.870212922.2328911510.65 0.15 RATE 2.0269027 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ------ occelmnt file for Occult END ------------------------------------ ============================================ Calculator (s): Steve Preston Date of update: 2002 Feb 18, 03:16 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@ acm.org