IOTA/IOTA-ES occultation update for (4265) Kani / TYC 0641-00588-1 event on 2008 Oct 12, 14:56 UT Visible from Russia Summary ------- On 2008 Oct 12 UT, the 18 km diameter asteroid (4265) Kani will occult a 10.6 mag star in the constellation Cetus for observers along a path across Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.5 mag to 15.1 mag (the magnitude of the asteroid) for at most 3.4 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: 25 * date and approx. time of event: 2008 Oct 12, 14:46 - 2008 Oct 12, 15:06 UT * magnitude of target star: 10.6 * magnitude drop [mag]: 4.5 * estimated maximum duration [s]: 3.4 * Moon: 94 % sunlit, 54° distance * Sun: 154° distance * rough path description: Russia The occultation path -------------------- * approximate projected width [km]: 38 * 1 sigma uncertainty interval [path widths]: +/- 2.71 * 1 sigma uncertainty interval [seconds]: +/- 14.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .098 +/- .067) * 1 sigma uncertainty ellipse (major, minor, PA): ( .101", .063", 73° ) * approx speed of asteroid's shadow [km/s]: 5.1849 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0641-00588-1 by 4265 Kani on 2008 Oct 12 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 - 9 13 10 84 35 36 14 46 50 3 10 -3 - 6 50 7 85 48 34 ... .. .. .. .. .. 47 13 46 89 15 11 ... .. .. .. .. .. 28 28 1 87 55 31 14 47 4 7 48 -7 42 32 37 88 18 9 18 17 38 87 25 1 125 22 59 87 46 49 ... .. .. .. .. .. 93 54 40 87 40 37 14 47 19 9 113 -9 103 48 53 87 29 50 82 8 12 87 46 55 132 27 35 86 0 48 20 36 35 86 16 55 115 22 27 86 8 51 14 47 34 11 134 -11 119 32 34 85 53 43 110 28 49 86 23 7 134 1 59 84 26 34 67 23 51 87 0 35 122 13 30 84 37 4 14 47 49 12 141 -13 124 40 14 84 22 16 119 28 45 84 51 39 134 16 8 83 1 20 96 53 6 85 59 53 125 3 49 83 12 1 14 48 3 14 144 -14 126 46 36 82 58 5 123 11 36 83 25 54 134 0 19 81 42 56 109 14 55 84 37 40 126 20 38 81 53 11 14 48 18 15 145 -16 127 39 58 81 40 7 124 55 32 82 6 16 133 30 52 80 29 55 115 2 34 83 15 58 126 52 37 80 39 33 14 48 33 16 145 -17 127 57 35 80 27 15 125 43 45 80 51 53 132 54 31 79 21 14 118 5 23 81 58 24 127 0 5 79 30 15 14 48 48 17 145 -18 127 55 25 79 18 36 126 1 55 79 41 55 132 14 26 78 16 10 119 47 10 80 45 12 126 52 56 78 24 33 14 49 3 18 145 -19 127 41 23 78 13 30 126 2 20 78 35 39 131 32 19 77 14 9 120 43 59 79 35 56 126 36 30 77 21 57 14 49 17 18 145 -20 127 19 48 77 11 24 125 51 31 77 32 32 130 49 6 76 14 45 121 13 33 78 30 6 126 13 54 76 22 1 14 49 32 19 144 -21 126 53 12 76 11 55 125 33 14 76 32 8 130 5 18 75 17 39 121 25 33 77 27 16 125 47 4 75 24 24 14 49 47 20 144 -22 126 23 10 75 14 42 125 9 49 75 34 7 129 21 16 74 22 33 121 25 37 76 27 3 125 17 13 74 28 49 14 50 2 21 143 -23 125 50 42 74 19 29 124 42 46 74 38 11 128 37 12 73 29 14 121 17 16 75 29 8 124 45 11 73 35 4 14 50 16 21 142 -24 125 16 30 73 26 3 124 13 3 73 44 5 127 53 12 72 37 31 121 2 49 74 33 15 124 11 33 72 42 56 14 50 31 22 141 -25 124 41 2 72 34 13 123 41 21 72 51 40 127 9 22 71 47 15 120 43 48 73 39 11 123 36 42 71 52 16 14 50 46 22 141 -26 124 4 37 71 43 49 123 8 10 72 0 43 126 25 43 70 58 17 120 21 18 72 46 45 123 0 57 71 2 56 14 51 1 23 140 -26 123 27 29 70 54 44 122 33 50 71 11 8 125 42 16 70 10 30 119 56 6 71 55 47 122 24 29 70 14 48 14 51 15 23 139 -27 122 49 50 70 6 50 121 58 37 70 22 47 124 59 3 69 23 49 119 28 46 71 6 10 121 47 27 69 27 47 14 51 30 24 138 -28 122 11 46 69 20 1 121 22 41 69 35 33 124 16 3 68 38 9 118 59 42 70 17 45 121 9 59 68 41 47 14 51 45 24 137 -28 121 33 22 68 34 13 120 46 11 68 49 21 123 33 15 67 53 23 118 29 15 69 30 27 120 32 10 67 56 43 14 52 0 25 137 -29 120 54 43 67 49 20 120 9 13 68 4 6 122 50 39 67 9 29 117 57 38 68 44 11 119 54 3 67 12 31 14 52 14 25 136 -30 120 15 51 67 5 19 119 31 53 67 19 44 122 8 14 66 26 23 117 25 3 67 58 52 119 15 41 66 29 8 14 52 29 25 135 -30 119 36 50 66 22 6 118 54 13 66 36 11 121 25 59 65 44 2 116 51 39 67 14 25 118 37 7 65 46 30 14 52 44 26 134 -31 118 57 39 65 39 37 118 16 16 65 53 23 120 43 53 65 2 22 116 17 33 66 30 46 117 58 21 65 4 34 14 52 59 26 133 -32 118 18 20 64 57 49 117 38 5 65 11 18 120 1 54 64 21 20 115 42 49 65 47 53 117 19 26 64 23 17 14 53 14 26 132 -32 117 38 55 64 16 40 116 59 40 64 29 53 119 20 2 63 40 55 115 7 33 65 5 43 116 40 20 63 42 36 14 53 28 27 131 -33 116 59 22 63 36 8 116 21 3 63 49 5 118 38 15 63 1 4 114 31 48 64 24 11 116 1 6 63 2 30 14 53 43 27 131 -33 116 19 42 62 56 9 115 42 15 63 8 51 117 56 32 62 21 45 113 55 36 63 43 17 115 21 43 62 22 56 14 53 58 27 130 -34 115 39 56 62 16 42 115 3 16 62 29 10 117 14 53 61 42 56 113 18 59 63 2 57 114 42 10 61 43 53 14 54 13 27 129 -34 115 0 3 61 37 46 114 24 5 61 50 0 116 33 15 61 4 36 112 42 0 62 23 9 114 2 29 61 5 18 14 54 27 28 128 -35 114 20 2 60 59 17 113 44 44 61 11 19 115 51 38 60 26 42 112 4 38 61 43 52 113 22 38 60 27 10 14 54 42 28 127 -35 113 39 52 60 21 15 113 5 11 60 33 4 115 10 0 59 49 13 111 26 55 61 5 3 112 42 37 59 49 27 14 54 57 28 126 -36 112 59 35 59 43 39 112 25 27 59 55 16 114 28 20 59 12 8 110 48 52 60 26 42 112 2 25 59 12 9 14 55 12 28 125 -36 112 19 8 59 6 26 111 45 31 59 17 51 113 46 38 58 35 26 110 10 29 59 48 45 111 22 2 58 35 12 14 55 26 28 124 -37 111 38 31 58 29 35 111 5 22 58 40 50 113 4 51 57 59 5 109 31 45 59 11 13 110 41 27 57 58 38 14 55 41 28 124 -37 110 57 43 57 53 6 110 25 0 58 4 9 112 23 0 57 23 4 108 52 41 58 34 3 110 0 39 57 22 23 14 55 56 28 123 -37 110 16 43 57 16 56 109 44 24 57 27 49 111 41 1 56 47 22 108 13 17 57 57 14 109 19 37 56 46 27 14 56 11 28 122 -38 109 35 31 56 41 5 109 3 34 56 51 48 110 58 55 56 11 58 107 33 32 57 20 46 108 38 21 56 10 49 14 56 25 28 121 -38 108 54 5 56 5 32 108 22 27 56 16 5 110 16 39 55 36 51 106 53 25 56 44 36 107 56 49 55 35 28 14 56 40 28 120 -38 108 12 24 55 30 16 107 41 5 55 40 39 109 34 13 55 2 0 106 12 56 56 8 44 107 15 0 55 0 22 14 56 55 28 119 -39 107 30 27 54 55 15 106 59 24 55 5 30 108 51 36 54 27 24 105 32 5 55 33 8 106 32 53 54 25 32 14 57 10 28 118 -39 106 48 12 54 20 29 106 17 25 54 30 35 108 8 45 53 53 2 104 50 49 54 57 48 105 50 27 53 50 56 14 57 24 28 117 -39 106 5 40 53 45 57 105 35 5 53 55 54 107 25 40 53 18 54 104 9 9 54 22 43 105 7 40 53 16 32 14 57 39 28 116 -39 105 22 47 53 11 38 104 52 24 53 21 26 106 42 19 52 44 58 103 27 2 53 47 51 104 24 31 52 42 21 14 57 54 28 116 -40 104 39 33 52 37 32 104 9 21 52 47 11 105 58 40 52 11 14 102 44 28 53 13 12 103 40 59 52 8 22 14 58 9 28 115 -40 103 55 57 52 3 36 103 25 52 52 13 7 105 14 42 51 37 41 102 1 25 52 38 46 102 57 1 51 34 33 14 58 24 28 114 -40 103 11 55 51 29 51 102 41 58 51 39 14 104 30 23 51 4 18 101 17 52 52 4 30 102 12 36 51 0 54 14 58 38 27 113 -40 102 27 28 50 56 16 101 57 36 51 5 31 103 45 41 50 31 5 100 33 46 51 30 24 101 27 42 50 27 24 14 58 53 27 112 -40 101 42 32 50 22 50 101 12 44 50 31 57 103 0 35 49 58 0 99 49 6 50 56 27 100 42 17 49 54 2 14 59 8 27 111 -41 100 57 5 49 49 33 100 27 20 49 58 31 102 15 2 49 25 4 99 3 49 50 22 39 99 56 19 49 20 48 14 59 23 27 110 -41 100 11 6 49 16 22 99 41 22 49 25 13 101 29 0 48 52 14 98 17 54 49 48 59 99 9 44 48 47 40 14 59 37 27 109 -41 99 24 33 48 43 19 98 54 48 48 52 1 100 42 28 48 19 31 97 31 17 49 15 25 98 22 32 48 14 38 14 59 52 26 108 -41 98 37 21 48 10 21 98 7 34 48 18 55 99 55 22 47 46 54 96 43 56 48 41 57 97 34 38 47 41 41 15 0 7 26 108 -41 97 49 29 47 37 28 97 19 38 47 45 54 99 7 40 47 14 22 95 55 48 48 8 34 96 46 0 47 8 49 15 0 22 26 107 -41 97 0 54 47 4 39 96 30 57 47 12 58 98 19 19 46 41 55 95 6 48 47 35 15 95 56 33 46 35 59 15 0 36 25 106 -41 96 11 31 46 31 54 95 41 27 46 40 4 97 30 15 46 9 30 94 16 54 47 1 58 95 6 15 46 3 12 15 0 51 25 105 -41 95 21 18 45 59 11 94 51 3 46 7 13 96 40 26 45 37 9 93 26 0 46 28 44 94 15 1 45 30 27 15 1 6 25 104 -41 94 30 9 45 26 29 93 59 43 45 34 23 95 49 47 45 4 49 92 34 3 45 55 31 93 22 45 44 57 41 15 1 21 24 103 -40 93 38 1 44 53 48 93 7 20 45 1 34 94 58 15 44 32 30 91 40 55 45 22 17 92 29 23 44 24 55 15 1 35 24 102 -40 92 44 48 44 21 6 92 13 49 44 28 43 94 5 44 44 0 11 90 46 31 44 49 1 91 34 49 43 52 7 15 1 50 23 101 -40 91 50 24 43 48 23 91 19 4 43 55 50 93 12 10 43 27 50 89 50 43 44 15 43 90 38 55 43 19 16 15 2 5 23 101 -40 90 54 41 43 15 36 90 22 58 43 22 54 92 17 25 42 55 28 88 53 23 43 42 20 89 41 33 42 46 20 15 2 20 22 100 -40 89 57 33 42 42 45 89 25 22 42 49 53 91 21 25 42 23 2 87 54 20 43 8 50 88 42 34 42 13 17 15 2 35 22 99 -39 88 58 50 42 9 47 88 26 6 42 16 46 90 24 0 41 50 31 86 53 24 42 35 12 87 41 47 41 40 6 15 2 49 21 98 -39 87 58 22 41 36 42 87 25 0 41 43 29 89 25 2 41 17 53 85 50 20 42 1 24 86 38 58 41 6 45 15 3 4 20 97 -39 86 55 55 41 3 27 86 21 49 41 10 2 88 24 20 40 45 7 84 44 51 41 27 22 85 33 53 40 33 11 15 3 19 20 96 -38 85 51 15 40 29 59 85 16 17 40 36 22 87 21 42 40 12 11 83 36 36 40 53 4 84 26 11 39 59 21 15 3 34 19 95 -38 84 44 3 39 56 16 84 8 4 40 2 25 86 16 54 39 39 2 82 25 9 40 18 24 83 15 29 39 25 12 15 3 48 18 94 -37 83 33 57 39 22 14 82 56 45 39 28 7 85 9 37 39 5 38 81 9 56 39 43 19 82 1 17 38 50 38 15 4 3 17 93 -37 82 20 28 38 47 48 81 41 49 38 53 24 83 59 29 38 31 54 79 50 14 39 7 41 80 42 56 38 15 33 15 4 18 16 92 -36 81 2 58 38 12 54 80 22 32 38 18 10 82 46 2 37 57 48 78 25 0 38 31 22 79 19 31 37 39 51 15 4 33 15 91 -35 79 40 38 37 37 23 78 57 59 37 42 15 81 28 41 37 23 13 76 52 49 37 54 8 77 49 50 37 3 20 15 4 47 14 90 -34 78 12 20 37 1 6 77 26 48 37 5 29 80 6 38 36 48 2 75 11 29 37 15 41 76 12 2 36 25 43 15 5 2 13 89 -33 76 36 23 36 23 48 75 47 1 36 27 33 78 38 47 36 12 6 73 17 19 36 35 28 74 23 13 35 46 37 15 5 17 11 88 -32 74 50 11 35 45 6 73 55 20 35 47 59 77 3 34 35 35 11 71 3 20 35 52 30 72 18 12 35 5 15 15 5 32 10 87 -31 72 49 13 35 4 22 71 45 46 35 5 56 75 18 34 34 56 56 68 12 21 35 4 18 69 45 51 34 20 2 15 5 46 8 85 -29 70 24 15 34 20 15 69 4 36 34 19 25 73 19 37 34 16 45 63 7 26 33 57 3 66 9 30 33 25 44 15 6 1 5 83 -26 67 8 49 33 28 58 64 56 52 33 20 36 70 58 36 33 33 27 ... .. .. .. .. .. Uncertainty in time = +/- 14 secs [Prediction of 2008 Oct 1.0] Data for the target star ------------------------ * name: TYC 0641-00588-1 * constellation : Cetus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 02 55 44.1403 DE: +07 58 51.817 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .025, .025 ) * V mag [mag]: 10.6 * B mag [mag]: 11.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4265) Kani approx. diameter [km]: 18 approx. diameter ["]: .024 distance from Earth [AU]: 1.01800 * orbital information: orbit source: Preston date of fit: 2008 Sep 30 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 925 number of rejected observations: 20 time covered by the observations: 1940 Nov 29 - 2008 Sep 13 1 sigma uncertainty ellipse (major, minor, PA): 0.098, 0.058, 72° remarks: * orbital elements for (4265) Kani : Mean anomaly = 14.26096418 deg Arg. of pericenter = 242.82767434 deg Long. of node = 127.29627400 deg Inclination = 4.35484088 deg Eccentricity = 0.19991222 Semimajor axis = 2.42809174 AU Perihelion dist = 1.94268653 AU Mag: H = 12.92, G = 0.15 Epoch of elements : MJD 54751.62200000 TDT (2008 Oct 12.622) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Oct 12 4265 Kani 14h 56.4m UT 10.6 2 55 44.140 7 58 51.82TYC 0641-00588-1 11.2 15.1 18 3.4 1.018 -1.490 -12.24 158.2727 7.986 -47.51 -7.69 14.9404 -0.42584 0.76877 -2.56039 -1.41736 -0.00225 0.00005 2000 13.83843420081011.00000242.827674127.296274 4.3548410.19991222 2.4280917 1.942686512.8 5.00.15 RATE 2.6049930 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.101 0.063 73 3.71 0.066 0 54740.5020081012_0588-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Oct 01, 04:38 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org