IOTA/IOTA-ES occultation update for (479) Caprera / UCAC2 36611567 event on 2009 Oct 04, 05:11 UT Visible from Summary ------- On 2009 Oct 04 UT, the 54 km diameter asteroid (479) Caprera will occult a 11.1 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.8 mag to 13.8 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: 41 * date and approx. time of event: 2009 Oct 04, 05:06 - 2009 Oct 04, 05:11 UT * magnitude of target star: 11.1 * magnitude drop [mag]: 2.8 * estimated maximum duration [s]: 3.3 * Moon: 100 % sunlit, 87° distance * Sun: 94° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 67 * 1 sigma uncertainty interval [path widths]: +/- 1.62 * 1 sigma uncertainty interval [seconds]: +/- 5.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .070 +/- .065) * 1 sigma uncertainty ellipse (major, minor, PA): ( .070", .065", 89° ) * approx speed of asteroid's shadow [km/s]: 16.2333 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC2 36611567 by 479 Caprera on 2009 Oct 4 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 - 96 0 0 44 32 27 5 6 7 0 71 -47 44 13 5 44 51 55 .. .. .. 45 55 34 - 95 0 0 44 47 38 5 6 7 1 71 -47 44 28 16 45 7 4 .. .. .. 46 10 39 - 94 0 0 45 2 37 5 6 7 2 72 -47 44 43 17 45 22 2 .. .. .. 46 25 34 - 93 0 0 45 17 25 5 6 8 3 73 -47 44 58 6 45 36 50 .. .. .. 46 40 18 - 92 0 0 45 32 3 5 6 8 3 74 -47 45 12 45 45 51 26 .. .. .. 46 54 50 - 91 0 0 45 46 29 5 6 8 4 74 -47 45 27 12 46 5 51 .. .. .. 47 9 11 - 90 0 0 46 0 43 5 6 9 5 75 -47 45 41 28 46 20 4 .. .. .. 47 23 20 - 89 0 0 46 14 46 5 6 10 6 76 -47 45 55 32 46 34 5 .. .. .. 47 37 17 - 88 0 0 46 28 37 5 6 10 6 76 -47 46 9 24 46 47 55 45 7 42 47 51 3 - 87 0 0 46 42 16 5 6 11 7 77 -47 46 23 4 47 1 33 45 21 26 48 4 36 - 86 0 0 46 55 43 5 6 12 8 78 -47 46 36 32 47 14 58 45 34 58 48 17 57 - 85 0 0 47 8 57 5 6 13 8 79 -47 46 49 48 47 28 11 45 48 18 48 31 5 - 84 0 0 47 21 59 5 6 13 9 79 -47 47 2 51 47 41 12 46 1 26 48 44 1 - 83 0 0 47 34 48 5 6 15 10 80 -47 47 15 42 47 54 0 46 14 21 48 56 45 - 82 0 0 47 47 25 5 6 16 11 81 -47 47 28 20 48 6 35 46 27 4 49 9 15 - 81 0 0 47 59 49 5 6 17 11 82 -46 47 40 45 48 18 57 46 39 33 49 21 33 - 80 0 0 48 12 0 5 6 18 12 82 -46 47 52 58 48 31 7 46 51 50 49 33 38 - 79 0 0 48 23 58 5 6 19 13 83 -46 48 4 57 48 43 3 47 3 54 49 45 29 - 78 0 0 48 35 42 5 6 21 13 84 -46 48 16 43 48 54 46 47 15 45 49 57 8 - 77 0 0 48 47 14 5 6 22 14 85 -46 48 28 16 49 6 16 47 27 22 50 8 33 - 76 0 0 48 58 32 5 6 23 15 86 -45 48 39 36 49 17 33 47 38 47 50 19 45 - 75 0 0 49 9 37 5 6 25 15 86 -45 48 50 42 49 28 37 47 49 58 50 30 43 - 74 0 0 49 20 29 5 6 27 16 87 -45 49 1 35 49 39 27 48 0 55 50 41 28 - 73 0 0 49 31 7 5 6 28 17 88 -45 49 12 15 49 50 3 48 11 39 50 52 0 - 72 0 0 49 41 31 5 6 30 17 89 -44 49 22 41 50 0 26 48 22 10 51 2 18 - 71 0 0 49 51 42 5 6 32 18 90 -44 49 32 53 50 10 36 48 32 27 51 12 22 - 70 0 0 50 1 39 5 6 33 19 90 -44 49 42 52 50 20 31 48 42 30 51 22 13 - 69 0 0 50 11 23 5 6 35 19 91 -43 49 52 37 50 30 14 48 52 20 51 31 50 - 68 0 0 50 20 53 5 6 37 20 92 -43 50 2 8 50 39 42 49 1 56 51 41 14 - 67 0 0 50 30 9 5 6 39 21 93 -43 50 11 26 50 48 57 49 11 18 51 50 24 - 66 0 0 50 39 11 5 6 41 21 94 -42 50 20 29 50 57 57 49 20 26 51 59 20 - 65 0 0 50 47 59 5 6 43 22 95 -42 50 29 19 51 6 44 49 29 20 52 8 2 - 64 0 0 50 56 34 5 6 45 22 95 -42 50 37 55 51 15 18 49 38 1 52 16 31 - 63 0 0 51 4 55 5 6 48 23 96 -41 50 46 17 51 23 37 49 46 27 52 24 45 - 62 0 0 51 13 2 5 6 50 24 97 -41 50 54 26 51 31 43 49 54 40 52 32 46 - 61 0 0 51 20 55 5 6 52 24 98 -41 51 2 20 51 39 34 50 2 38 52 40 33 - 60 0 0 51 28 34 5 6 54 25 99 -40 51 10 0 51 47 12 50 10 23 52 48 7 - 59 0 0 51 35 59 5 6 57 25 100 -40 51 17 27 51 54 36 50 17 53 52 55 26 - 58 0 0 51 43 10 5 6 59 26 101 -39 51 24 40 52 1 46 50 25 10 53 2 32 - 57 0 0 51 50 8 5 7 1 27 102 -39 51 31 38 52 8 42 50 32 13 53 9 24 - 56 0 0 51 56 51 5 7 4 27 103 -39 51 38 23 52 15 24 50 39 1 53 16 2 - 55 0 0 52 3 21 5 7 6 28 104 -38 51 44 54 52 21 53 50 45 36 53 22 27 - 54 0 0 52 9 37 5 7 9 28 104 -38 51 51 10 52 28 7 50 51 56 53 28 37 - 53 0 0 52 15 38 5 7 12 29 105 -37 51 57 13 52 34 8 50 58 3 53 34 34 - 52 0 0 52 21 26 5 7 14 30 106 -37 52 3 2 52 39 54 51 3 55 53 40 17 - 51 0 0 52 27 0 5 7 17 30 107 -37 52 8 37 52 45 27 51 9 33 53 45 46 - 50 0 0 52 32 20 5 7 20 31 108 -36 52 13 58 52 50 46 51 14 58 53 51 2 - 49 0 0 52 37 26 5 7 22 31 109 -36 52 19 5 52 55 51 51 20 8 53 56 4 - 48 0 0 52 42 18 5 7 25 32 110 -35 52 23 59 53 0 43 51 25 4 54 0 52 - 47 0 0 52 46 57 5 7 28 32 111 -35 52 28 38 53 5 20 51 29 46 54 5 26 - 46 0 0 52 51 21 5 7 31 33 112 -34 52 33 3 53 9 44 51 34 14 54 9 47 - 45 0 0 52 55 32 5 7 34 33 113 -34 52 37 15 53 13 54 51 38 28 54 13 54 - 44 0 0 52 59 29 5 7 37 34 114 -33 52 41 12 53 17 49 51 42 29 54 17 47 - 43 0 0 53 3 12 5 7 39 34 115 -33 52 44 56 53 21 32 51 46 15 54 21 27 - 42 0 0 53 6 41 5 7 42 35 116 -32 52 48 26 53 25 0 51 49 47 54 24 52 - 41 0 0 53 9 56 5 7 46 36 117 -32 52 51 42 53 28 14 51 53 5 54 28 5 - 40 0 0 53 12 57 5 7 49 36 118 -31 52 54 44 53 31 15 51 56 9 54 31 3 - 39 0 0 53 15 45 5 7 52 37 119 -31 52 57 32 53 34 2 51 58 59 54 33 48 - 38 0 0 53 18 19 5 7 55 37 120 -30 53 0 6 53 36 35 52 1 35 54 36 20 - 37 0 0 53 20 39 5 7 58 38 121 -30 53 2 27 53 38 55 52 3 57 54 38 37 - 36 0 0 53 22 45 5 8 1 38 123 -29 53 4 33 53 41 1 52 6 5 54 40 42 - 35 0 0 53 24 37 5 8 4 39 124 -29 53 6 26 53 42 52 52 7 59 54 42 32 - 34 0 0 53 26 16 5 8 8 39 125 -28 53 8 5 53 44 31 52 9 39 54 44 9 - 33 0 0 53 27 40 5 8 11 39 126 -28 53 9 30 53 45 55 52 11 5 54 45 32 - 32 0 0 53 28 51 5 8 14 40 127 -27 53 10 41 53 47 6 52 12 18 54 46 42 - 31 0 0 53 29 48 5 8 18 40 128 -27 53 11 39 53 48 3 52 13 16 54 47 38 - 30 0 0 53 30 32 5 8 21 41 129 -26 53 12 22 53 48 46 52 14 0 54 48 21 - 29 0 0 53 31 1 5 8 24 41 130 -26 53 12 52 53 49 15 52 14 30 54 48 50 - 28 0 0 53 31 17 5 8 28 42 132 -25 53 13 8 53 49 31 52 14 46 54 49 5 - 27 0 0 53 31 19 5 8 31 42 133 -25 53 13 10 53 49 33 52 14 48 54 49 7 - 26 0 0 53 31 7 5 8 35 43 134 -24 53 12 58 53 49 21 52 14 36 54 48 55 - 25 0 0 53 30 42 5 8 38 43 135 -24 53 12 32 53 48 55 52 14 10 54 48 30 - 24 0 0 53 30 2 5 8 42 44 136 -23 53 11 52 53 48 16 52 13 31 54 47 50 - 23 0 0 53 29 9 5 8 45 44 138 -23 53 10 59 53 47 23 52 12 37 54 46 58 - 22 0 0 53 28 2 5 8 49 44 139 -22 53 9 52 53 46 16 52 11 29 54 45 51 - 21 0 0 53 26 40 5 8 53 45 140 -22 53 8 30 53 44 55 52 10 7 54 44 31 - 20 0 0 53 25 6 5 8 56 45 141 -21 53 6 55 53 43 20 52 8 31 54 42 58 - 19 0 0 53 23 17 5 9 0 46 143 -20 53 5 6 53 41 32 52 6 40 54 41 10 - 18 0 0 53 21 14 5 9 4 46 144 -20 53 3 3 53 39 30 52 4 36 54 39 9 - 17 0 0 53 18 58 5 9 8 46 145 -19 53 0 46 53 37 13 52 2 18 54 36 55 - 16 0 0 53 16 27 5 9 11 47 147 -19 52 58 15 53 34 43 51 59 45 54 34 26 - 15 0 0 53 13 43 5 9 15 47 148 -18 52 55 30 53 32 0 51 56 59 54 31 44 - 14 0 0 53 10 44 5 9 19 47 149 -18 52 52 31 53 29 2 51 53 58 54 28 48 - 13 0 0 53 7 32 5 9 23 48 151 -17 52 49 18 53 25 50 51 50 43 54 25 38 - 12 0 0 53 4 6 5 9 27 48 152 -17 52 45 51 53 22 24 51 47 14 54 22 15 - 11 0 0 53 0 25 5 9 31 48 153 -16 52 42 10 53 18 45 51 43 31 54 18 38 - 10 0 0 52 56 31 5 9 35 49 155 -15 52 38 15 53 14 51 51 39 34 54 14 46 - 9 0 0 52 52 23 5 9 39 49 156 -15 52 34 6 53 10 43 51 35 22 54 10 41 - 8 0 0 52 48 0 5 9 43 49 158 -14 52 29 43 53 6 22 51 30 56 54 6 22 - 7 0 0 52 43 24 5 9 47 50 159 -14 52 25 5 53 1 46 51 26 16 54 1 50 - 6 0 0 52 38 33 5 9 51 50 161 -13 52 20 14 52 56 56 51 21 22 53 57 3 - 5 0 0 52 33 28 5 9 55 50 162 -12 52 15 8 52 51 53 51 16 13 53 52 2 - 4 0 0 52 28 9 5 9 59 51 164 -12 52 9 48 52 46 35 51 10 50 53 46 48 - 3 0 0 52 22 36 5 10 3 51 165 -11 52 4 14 52 41 3 51 5 13 53 41 19 - 2 0 0 52 16 49 5 10 7 51 167 -11 51 58 26 52 35 17 50 59 21 53 35 36 - 1 0 0 52 10 48 5 10 12 51 168 -10 51 52 23 52 29 16 50 53 15 53 29 40 0 0 0 52 4 32 5 10 16 51 170 -9 51 46 7 52 23 2 50 46 55 53 23 29 1 0 0 51 58 2 5 10 20 52 171 -9 51 39 36 52 16 33 50 40 20 53 17 4 2 0 0 51 51 18 5 10 24 52 173 -8 51 32 50 52 9 50 50 33 31 53 10 25 3 0 0 51 44 20 5 10 29 52 175 -8 51 25 51 52 2 53 50 26 28 53 3 32 4 0 0 51 37 7 5 10 33 52 176 -7 51 18 37 51 55 42 50 19 10 52 56 25 5 0 0 51 29 40 5 10 38 52 178 -6 51 11 9 51 48 16 50 11 38 52 49 4 6 0 0 51 21 59 5 10 42 53 179 -6 51 3 26 51 40 36 50 3 52 52 41 28 7 0 0 51 14 4 5 10 46 53 181 -5 50 55 30 51 32 42 49 55 51 52 33 39 8 0 0 51 5 54 5 10 51 53 183 -4 50 47 19 51 24 34 49 47 35 52 25 35 9 0 0 50 57 30 5 10 55 53 184 -4 50 38 53 51 16 11 49 39 6 52 17 17 10 0 0 50 48 52 5 11 0 53 186 -3 50 30 14 51 7 34 49 30 22 52 8 45 11 0 0 50 39 59 5 11 4 53 188 -2 50 21 20 50 58 43 49 21 23 51 59 58 12 0 0 50 30 52 5 11 9 53 189 -2 50 12 11 50 49 38 49 12 10 51 50 58 13 0 0 50 21 31 5 11 14 53 191 -1 50 2 49 50 40 18 49 2 43 51 41 43 14 0 0 50 11 56 5 11 18 53 193 0 49 53 12 50 30 45 48 53 2 51 32 14 Uncertainty in time = +/- 6 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: UCAC2 36611567 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 27 42.4288 DE: +13 53 43.084 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .063, .063 ) * V mag [mag]: 11.1 * B mag [mag]: 0.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (479) Caprera approx. diameter [km]: 54 approx. diameter ["]: .040 distance from Earth [AU]: 1.84800 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 773 number of rejected observations: 90 time covered by the observations: 1901 Nov 12 - 2007 Sep 21 1 sigma uncertainty ellipse (major, minor, PA): 0.029, 0.012, 83° remarks: * orbital elements for (479) Caprera : Mean anomaly = 14.58846214 deg Arg. of pericenter = 269.76206214 deg Long. of node = 136.08597681 deg Inclination = 8.68045942 deg Eccentricity = 0.21639417 Semimajor axis = 2.72143984 AU Perihelion dist = 2.13253612 AU Mag: H = 9.60, G = 0.15 Epoch of elements : MJD 55108.21600000 TDT (2009 Oct 04.216) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Oct 4 479 Caprera 5h 11.4m UT 11.1 6 27 42.429 13 53 43.08UCAC2 36611567 0.0 13.8 54 3.3 1.848 2.955 -7.04 6.0517 13.898 99.35 -4.40 5.1895 0.09712 0.58805 9.04231 -1.47939 -0.00537 0.00032 2000 12.7847532009 926.00000269.762062136.085977 8.6804590.21639417 2.7214398 2.1325361 9.6 5.00.15 RATE 2.1953610 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.070 0.065 89 2.62 0.065 0 54545.5020091004_611567 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 14:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org