IOTA/IOTA-ES occultation update for (1467) Mashona / TYC 2892-00986-2 event on 2009 Feb 06, 00:16 UT Visible from Summary ------- On 2009 Feb 06 UT, the 112 km diameter asteroid (1467) Mashona will occult a 11.8 mag star in the constellation Perseus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.9 mag to 14.6 mag (the magnitude of the asteroid) for at most 9.5 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: 88 * date and approx. time of event: 2009 Feb 06, 00:08 - 2009 Feb 06, 00:24 UT * magnitude of target star: 11.8 * magnitude drop [mag]: 2.9 * estimated maximum duration [s]: 9.5 * Moon: 83 % sunlit, 22° distance * Sun: 115° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 113 * 1 sigma uncertainty interval [path widths]: +/- 0.55 * 1 sigma uncertainty interval [seconds]: +/- 4.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .028 +/- .023) * 1 sigma uncertainty ellipse (major, minor, PA): ( .028", .023", 88° ) * approx speed of asteroid's shadow [km/s]: 11.7452 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2892-00986-2 by 1467 Mashona on 2009 Feb 6 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 - 64 37 34 -45 0 0 0 24 34 0 354 -8 - 65 20 32 - 63 54 35 - 66 7 48 - 63 7 18 - 64 45 53 -44 0 0 0 24 34 1 354 -8 - 65 28 7 - 64 3 38 - 66 14 35 - 63 17 10 - 64 54 2 -43 0 0 0 24 34 2 355 -8 - 65 35 35 - 64 12 30 - 66 21 17 - 63 26 47 - 65 2 3 -42 0 0 0 24 33 3 355 -9 - 65 42 56 - 64 21 10 - 66 27 55 - 63 36 10 - 65 9 55 -41 0 0 0 24 33 4 355 -9 - 65 50 11 - 64 29 39 - 66 34 28 - 63 45 22 - 65 17 39 -40 0 0 0 24 32 5 355 -10 - 65 57 19 - 64 37 59 - 66 40 57 - 63 54 21 - 65 25 16 -39 0 0 0 24 31 6 355 -10 - 66 4 22 - 64 46 10 - 66 47 23 - 64 3 9 - 65 32 46 -38 0 0 0 24 30 7 355 -10 - 66 11 20 - 64 54 13 - 66 53 46 - 64 11 47 - 65 40 10 -37 0 0 0 24 29 8 355 -11 - 66 18 13 - 65 2 7 - 67 0 5 - 64 20 16 - 65 47 28 -36 0 0 0 24 27 9 355 -11 - 66 25 2 - 65 9 54 - 67 6 22 - 64 28 35 - 65 54 40 -35 0 0 0 24 26 10 355 -12 - 66 31 46 - 65 17 35 - 67 12 36 - 64 36 46 - 66 1 48 -34 0 0 0 24 24 11 355 -12 - 66 38 27 - 65 25 8 - 67 18 47 - 64 44 49 - 66 8 50 -33 0 0 0 24 22 12 355 -12 - 66 45 5 - 65 32 36 - 67 24 57 - 64 52 45 - 66 15 48 -32 0 0 0 24 20 13 355 -13 - 66 51 39 - 65 39 58 - 67 31 5 - 65 0 33 - 66 22 42 -31 0 0 0 24 17 14 355 -13 - 66 58 10 - 65 47 15 - 67 37 11 - 65 8 15 - 66 29 33 -30 0 0 0 24 15 15 356 -13 - 67 4 39 - 65 54 27 - 67 43 16 - 65 15 51 - 66 36 20 -29 0 0 0 24 12 16 356 -14 - 67 11 5 - 66 1 35 - 67 49 20 - 65 23 21 - 66 43 4 -28 0 0 0 24 10 17 356 -14 - 67 17 30 - 66 8 38 - 67 55 23 - 65 30 46 - 66 49 45 -27 0 0 0 24 7 18 356 -15 - 67 23 52 - 66 15 38 - 68 1 25 - 65 38 7 - 66 56 24 -26 0 0 0 24 4 19 356 -15 - 67 30 13 - 66 22 34 - 68 7 27 - 65 45 22 - 67 3 0 -25 0 0 0 24 0 20 356 -15 - 67 36 33 - 66 29 27 - 68 13 29 - 65 52 34 - 67 9 35 -24 0 0 0 23 57 21 356 -16 - 67 42 52 - 66 36 18 - 68 19 30 - 65 59 42 - 67 16 8 -23 0 0 0 23 53 22 356 -16 - 67 49 10 - 66 43 6 - 68 25 32 - 66 6 46 - 67 22 39 -22 0 0 0 23 50 23 356 -16 - 67 55 27 - 66 49 51 - 68 31 34 - 66 13 47 - 67 29 9 -21 0 0 0 23 46 24 356 -16 - 68 1 45 - 66 56 35 - 68 37 36 - 66 20 46 - 67 35 39 -20 0 0 0 23 42 25 356 -17 - 68 8 2 - 67 3 17 - 68 43 40 - 66 27 42 - 67 42 8 -19 0 0 0 23 38 26 356 -17 - 68 14 19 - 67 9 58 - 68 49 44 - 66 34 36 - 67 48 37 -18 0 0 0 23 33 27 356 -17 - 68 20 37 - 67 16 38 - 68 55 49 - 66 41 28 - 67 55 6 -17 0 0 0 23 29 28 356 -18 - 68 26 55 - 67 23 17 - 69 1 56 - 66 48 18 - 68 1 34 -16 0 0 0 23 24 29 357 -18 - 68 33 14 - 67 29 55 - 69 8 5 - 66 55 7 - 68 8 4 -15 0 0 0 23 19 30 357 -18 - 68 39 35 - 67 36 34 - 69 14 16 - 67 1 55 - 68 14 34 -14 0 0 0 23 15 31 357 -18 - 68 45 56 - 67 43 12 - 69 20 29 - 67 8 43 - 68 21 5 -13 0 0 0 23 10 32 357 -19 - 68 52 20 - 67 49 51 - 69 26 44 - 67 15 30 - 68 27 37 -12 0 0 0 23 4 33 357 -19 - 68 58 45 - 67 56 30 - 69 33 1 - 67 22 17 - 68 34 11 -11 0 0 0 22 59 34 357 -19 - 69 5 13 - 68 3 11 - 69 39 22 - 67 29 5 - 68 40 47 -10 0 0 0 22 54 35 357 -19 - 69 11 43 - 68 9 52 - 69 45 46 - 67 35 53 - 68 47 25 - 9 0 0 0 22 48 36 357 -20 - 69 18 16 - 68 16 35 - 69 52 13 - 67 42 42 - 68 54 5 - 8 0 0 0 22 42 37 357 -20 - 69 24 52 - 68 23 20 - 69 58 44 - 67 49 31 - 69 0 48 - 7 0 0 0 22 36 38 357 -20 - 69 31 31 - 68 30 7 - 70 5 19 - 67 56 23 - 69 7 34 - 6 0 0 0 22 30 39 357 -20 - 69 38 13 - 68 36 56 - 70 11 58 - 68 3 16 - 69 14 24 - 5 0 0 0 22 24 40 357 -20 - 69 45 0 - 68 43 48 - 70 18 41 - 68 10 11 - 69 21 16 - 4 0 0 0 22 18 41 357 -21 - 69 51 50 - 68 50 43 - 70 25 29 - 68 17 9 - 69 28 13 - 3 0 0 0 22 11 42 358 -21 - 69 58 46 - 68 57 42 - 70 32 23 - 68 24 9 - 69 35 14 - 2 0 0 0 22 5 43 358 -21 - 70 5 46 - 69 4 44 - 70 39 22 - 68 31 12 - 69 42 20 - 1 0 0 0 21 58 44 358 -21 - 70 12 51 - 69 11 50 - 70 46 27 - 68 38 19 - 69 49 30 0 0 0 0 21 52 45 358 -21 - 70 20 1 - 69 19 1 - 70 53 37 - 68 45 29 - 69 56 46 1 0 0 0 21 45 46 358 -21 - 70 27 18 - 69 26 16 - 71 0 55 - 68 52 44 - 70 4 8 2 0 0 0 21 38 47 358 -22 - 70 34 41 - 69 33 36 - 71 8 19 - 69 0 3 - 70 11 35 3 0 0 0 21 31 48 358 -22 - 70 42 10 - 69 41 2 - 71 15 51 - 69 7 26 - 70 19 9 4 0 0 0 21 23 49 358 -22 - 70 49 47 - 69 48 33 - 71 23 30 - 69 14 55 - 70 26 50 5 0 0 0 21 16 50 359 -22 - 70 57 31 - 69 56 11 - 71 31 17 - 69 22 30 - 70 34 38 6 0 0 0 21 8 51 359 -22 - 71 5 22 - 70 3 56 - 71 39 13 - 69 30 11 - 70 42 34 7 0 0 0 21 1 52 359 -22 - 71 13 22 - 70 11 47 - 71 47 18 - 69 37 58 - 70 50 38 8 0 0 0 20 53 53 359 -22 - 71 21 31 - 70 19 47 - 71 55 32 - 69 45 52 - 70 58 51 9 0 0 0 20 45 54 359 -22 - 71 29 49 - 70 27 54 - 72 3 56 - 69 53 53 - 71 7 13 10 0 0 0 20 38 55 359 -22 - 71 38 17 - 70 36 10 - 72 12 31 - 70 2 3 - 71 15 44 11 0 0 0 20 30 56 360 -22 - 71 46 56 - 70 44 35 - 72 21 17 - 70 10 21 - 71 24 26 12 0 0 0 20 22 57 360 -22 - 71 55 45 - 70 53 9 - 72 30 14 - 70 18 47 - 71 33 19 13 0 0 0 20 13 58 0 -22 - 72 4 46 - 71 1 54 - 72 39 24 - 70 27 23 - 71 42 23 14 0 0 0 20 5 59 0 -22 - 72 13 59 - 71 10 50 - 72 48 47 - 70 36 9 - 71 51 39 15 0 0 0 19 57 60 1 -22 - 72 23 24 - 71 19 56 - 72 58 23 - 70 45 6 - 72 1 8 16 0 0 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- 78 18 42 42 0 0 0 15 46 83 63 -19 - 79 1 9 - 77 36 24 - 79 48 1 - 76 50 1 - 78 41 48 43 0 0 0 15 36 83 72 -19 - 79 25 1 - 77 58 43 - 80 12 45 - 77 11 31 - 79 5 58 44 0 0 0 15 26 83 81 -19 - 79 50 1 - 78 22 4 - 80 38 40 - 77 33 59 - 79 31 16 45 0 0 0 15 16 83 90 -18 - 80 16 12 - 78 46 31 - 81 5 51 - 77 57 29 - 79 57 49 46 0 0 0 15 6 82 97 -18 - 80 43 41 - 79 12 9 - 81 34 22 - 78 22 7 - 80 25 42 47 0 0 0 14 56 82 104 -18 - 81 12 33 - 79 39 3 - 82 4 20 - 78 47 57 - 80 55 0 48 0 0 0 14 46 81 110 -18 - 81 42 55 - 80 7 19 - 82 35 53 - 79 15 6 - 81 25 52 49 0 0 0 14 36 80 115 -17 - 82 14 54 - 80 37 4 - 83 9 8 - 79 43 39 Latitude Latitude Latitude Latitude - 83 0 0 51 45 17 0 14 8 78 124 -16 50 19 29 53 10 4 48 43 50 54 42 15 - 84 0 0 53 18 33 0 13 53 77 127 -16 51 56 52 54 39 21 50 25 56 56 7 17 - 85 0 0 54 43 49 0 13 38 75 130 -15 53 25 50 56 1 1 51 59 6 57 25 8 - 86 0 0 56 2 2 0 13 25 74 131 -15 54 47 24 57 16 0 53 24 27 58 36 39 - 87 0 0 57 14 3 0 13 13 73 132 -15 56 2 26 58 25 4 54 42 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69 8 24 -102 0 0 67 56 12 0 11 21 61 127 -10 67 9 50 68 42 26 66 18 38 69 33 7 -103 0 0 68 21 32 0 11 16 60 126 -10 67 36 6 69 6 50 66 45 57 69 56 30 -104 0 0 68 45 32 0 11 11 60 125 -9 68 0 59 69 29 56 67 11 49 70 18 39 -105 0 0 69 8 16 0 11 7 59 125 -9 68 24 34 69 51 51 67 36 20 70 39 40 -106 0 0 69 29 51 0 11 3 59 124 -9 68 46 56 70 12 38 67 59 35 70 59 35 -107 0 0 69 50 19 0 10 59 58 123 -9 69 8 10 70 32 22 68 21 39 71 18 30 -108 0 0 70 9 46 0 10 55 58 122 -8 69 28 19 70 51 7 68 42 36 71 36 29 -109 0 0 70 28 15 0 10 51 57 121 -8 69 47 28 71 8 55 69 2 30 71 53 33 -110 0 0 70 45 48 0 10 48 57 121 -8 70 5 40 71 25 51 69 21 25 72 9 47 -111 0 0 71 2 30 0 10 44 56 120 -8 70 22 59 71 41 56 69 39 24 72 25 14 -112 0 0 71 18 23 0 10 41 56 119 -8 70 39 26 71 57 15 69 56 30 72 39 55 -113 0 0 71 33 30 0 10 38 56 118 -8 70 55 6 72 11 49 70 12 46 72 53 54 -114 0 0 71 47 53 0 10 34 55 117 -7 71 10 0 72 25 41 70 28 15 73 7 12 -115 0 0 72 1 34 0 10 31 55 116 -7 71 24 11 72 38 53 70 42 58 73 19 51 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9 54 50 103 -5 73 49 22 74 54 4 73 13 43 75 29 35 -131 0 0 74 27 38 0 9 52 50 102 -5 73 55 28 74 59 45 73 20 3 75 35 2 -132 0 0 74 33 9 0 9 50 49 101 -5 74 1 12 75 5 5 73 25 59 75 40 9 -133 0 0 74 38 21 0 9 48 49 100 -5 74 6 34 75 10 5 73 31 34 75 44 57 -134 0 0 74 43 12 0 9 46 49 99 -5 74 11 35 75 14 46 73 36 46 75 49 27 -135 0 0 74 47 43 0 9 44 49 98 -4 74 16 16 75 19 8 73 41 38 75 53 38 -136 0 0 74 51 55 0 9 42 48 97 -4 74 20 37 75 23 11 73 46 9 75 57 32 -137 0 0 74 55 49 0 9 40 48 96 -4 74 24 39 75 26 56 73 50 20 76 1 8 -138 0 0 74 59 24 0 9 38 48 95 -4 74 28 22 75 30 23 73 54 11 76 4 27 -139 0 0 75 2 41 0 9 36 47 94 -4 74 31 46 75 33 34 73 57 43 76 7 30 -140 0 0 75 5 40 0 9 34 47 93 -4 74 34 51 75 36 27 74 0 55 76 10 16 -141 0 0 75 8 22 0 9 32 47 93 -4 74 37 39 75 39 3 74 3 49 76 12 46 -142 0 0 75 10 46 0 9 30 47 92 -4 74 40 9 75 41 22 74 6 25 76 15 0 -143 0 0 75 12 54 0 9 29 46 91 -3 74 42 21 75 43 26 74 8 42 76 16 58 -144 0 0 75 14 45 0 9 27 46 90 -3 74 44 16 75 45 13 74 10 42 76 18 41 -145 0 0 75 16 20 0 9 25 46 89 -3 74 45 54 75 46 44 74 12 23 76 20 8 -146 0 0 75 17 38 0 9 23 46 88 -3 74 47 15 75 47 59 74 13 47 76 21 20 -147 0 0 75 18 40 0 9 21 45 87 -3 74 48 19 75 48 59 74 14 53 76 22 18 -148 0 0 75 19 25 0 9 20 45 86 -3 74 49 6 75 49 43 74 15 42 76 23 0 -149 0 0 75 19 54 0 9 18 45 85 -3 74 49 36 75 50 11 74 16 14 76 23 27 -150 0 0 75 20 8 0 9 16 45 84 -3 74 49 50 75 50 24 74 16 28 76 23 39 -151 0 0 75 20 5 0 9 14 44 83 -2 74 49 47 75 50 21 74 16 25 76 23 37 -152 0 0 75 19 46 0 9 13 44 82 -2 74 49 28 75 50 3 74 16 5 76 23 19 -153 0 0 75 19 11 0 9 11 44 81 -2 74 48 52 75 49 29 74 15 28 76 22 47 -154 0 0 75 18 20 0 9 9 44 80 -2 74 47 59 75 48 40 74 14 33 76 21 59 -155 0 0 75 17 13 0 9 8 43 79 -2 74 46 49 75 47 35 74 13 21 76 20 57 -156 0 0 75 15 49 0 9 6 43 78 -2 74 45 23 75 46 14 74 11 51 76 19 40 -157 0 0 75 14 9 0 9 4 43 77 -2 74 43 39 75 44 38 74 10 4 76 18 7 -158 0 0 75 12 13 0 9 3 43 76 -2 74 41 38 75 42 45 74 7 58 76 16 19 -159 0 0 75 9 59 0 9 1 42 76 -2 74 39 20 75 40 36 74 5 35 76 14 15 -160 0 0 75 7 29 0 8 59 42 75 -1 74 36 45 75 38 11 74 2 54 76 11 56 -161 0 0 75 4 41 0 8 58 42 74 -1 74 33 51 75 35 29 73 59 54 76 9 20 -162 0 0 75 1 36 0 8 56 42 73 -1 74 30 40 75 32 31 73 56 35 76 6 29 -163 0 0 74 58 13 0 8 54 41 72 -1 74 27 10 75 29 15 73 52 57 76 3 21 -164 0 0 74 54 32 0 8 52 41 71 -1 74 23 21 75 25 42 73 49 0 75 59 56 -165 0 0 74 50 33 0 8 51 41 70 -1 74 19 13 75 21 51 73 44 43 75 56 14 -166 0 0 74 46 15 0 8 49 41 69 -1 74 14 46 75 17 41 73 40 5 75 52 15 -167 0 0 74 41 37 0 8 47 40 68 -1 74 9 58 75 13 13 73 35 7 75 47 57 -168 0 0 74 36 40 0 8 46 40 67 0 74 4 51 75 8 27 73 29 48 75 43 22 -169 0 0 74 31 22 0 8 44 40 66 0 73 59 22 75 3 20 73 24 7 75 38 28 -170 0 0 74 25 44 0 8 42 39 65 0 73 53 32 74 57 54 73 18 4 75 33 14 -171 0 0 74 19 44 0 8 40 39 64 0 73 47 20 74 52 7 73 11 38 75 27 41 Uncertainty in time = +/- 5 secs [Prediction of 2008 Nov 6.0] Data for the target star ------------------------ * name: TYC 2892-00986-2 * constellation : Perseus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 04 38 45.0448 DE: +44 27 55.184 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .018, .017 ) * V mag [mag]: 11.8 * B mag [mag]: 12.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1467) Mashona approx. diameter [km]: 112 approx. diameter ["]: .050 distance from Earth [AU]: 3.11100 * orbital information: orbit source: Preston date of fit: 2008 Nov 05 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 705 number of rejected observations: 33 time covered by the observations: 1930 Feb 24 - 2008 Oct 01 1 sigma uncertainty ellipse (major, minor, PA): 0.021, 0.016, 86° remarks: * orbital elements for (1467) Mashona : Mean anomaly = 118.77239089 deg Arg. of pericenter = 349.53200812 deg Long. of node = 326.59523952 deg Inclination = 21.96698956 deg Eccentricity = 0.13440303 Semimajor axis = 3.37999276 AU Perihelion dist = 2.92571148 AU Mag: H = 8.65, G = 0.15 Epoch of elements : MJD 54868.01100000 TDT (2009 Feb 06.011) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Feb 6 1467 Mashona 0h 15.6m UT 11.8 4 38 45.045 44 27 55.18TYC 2892-00986-2 12.0 14.6 112 9.5 3.111 0.362 -18.33 -70.4841 44.470 179.62 -15.64 0.2598 -0.10706 -0.02234 1.36768 -6.48670 0.00548 -0.00022 2000 117.5017672009 129.00000349.532008326.595240 21.9669900.13440303 3.3799928 2.9257115 8.6 5.00.15 RATE 1.5860990 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.028 0.023 88 1.55 0.027 0 54776.5020090206_0986-2 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 06, 05:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org