IOTA/IOTA-ES occultation update for (608) Adolfine / TYC 1891-01327-1 event on 2012 Oct 01, 11:15 UT Visible from S USA, Mexico Summary ------- On 2012 Oct 01 UT, the 26 km diameter asteroid (608) Adolfine will occult a 10.1 mag star in the constellation Auriga for observers along a path across S USA, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.1 mag to 16.2 mag (the magnitude of the asteroid) for at most 1.8 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 28 * date and approx. time of event: 2012 Oct 01, 11:08 - 2012 Oct 01, 11:15 UT * geocentric midpoint of event [JD]: 2456201.96909583 * magnitude of target star: 10.1 * magnitude drop [mag]: 6.1 * estimated maximum duration [s]: 1.8 * Moon: 98 % sunlit, 73° distance * Sun: 92° distance * rough path description: S USA, Mexico The occultation path -------------------- * approximate projected width [km]: 26 * 1 sigma uncertainty interval [path widths]: +/- 2.37 * 1 sigma uncertainty interval [seconds]: +/- 4.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .036 +/- .033) * 1 sigma uncertainty ellipse (major, minor, PA): ( .036", .033", 100° ) * approx speed of asteroid's shadow [km/s]: 14.2516 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1891-01327-1 by 608 Adolfine on 2012 Oct 1 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 -171 0 0 2 53 45 11 8 3 1 60 -88 2 45 38 3 1 52 2 7 9 3 40 23 -170 0 0 3 28 4 11 8 3 2 60 -90 3 19 57 3 36 11 2 41 28 4 14 42 -169 0 0 4 2 20 11 8 3 3 61 -89 3 54 13 4 10 27 3 15 45 4 48 57 -168 0 0 4 36 33 11 8 4 4 61 -88 4 28 26 4 44 40 3 49 58 5 23 8 -167 0 0 5 10 40 11 8 5 5 61 -87 5 2 33 5 18 47 4 24 7 5 57 15 -166 0 0 5 44 41 11 8 6 7 61 -86 5 36 35 5 52 48 4 58 10 6 31 15 -165 0 0 6 18 36 11 8 7 8 61 -85 6 10 30 6 26 42 5 32 6 7 5 7 -164 0 0 6 52 23 11 8 8 9 61 -83 6 44 17 7 0 28 6 5 55 7 38 52 -163 0 0 7 26 0 11 8 10 10 61 -82 7 17 55 7 34 5 6 39 35 8 12 27 -162 0 0 7 59 28 11 8 11 11 61 -81 7 51 23 8 7 33 7 13 5 8 45 52 -161 0 0 8 32 44 11 8 13 12 61 -80 8 24 40 8 40 49 7 46 25 9 19 5 -160 0 0 9 5 49 11 8 15 13 62 -79 8 57 45 9 13 53 8 19 33 9 52 7 -159 0 0 9 38 41 11 8 17 15 62 -78 9 30 38 9 46 44 8 52 28 10 24 56 -158 0 0 10 11 19 11 8 19 16 62 -77 10 3 17 10 19 22 9 25 10 10 57 30 -157 0 0 10 43 43 11 8 22 17 62 -75 10 35 41 10 51 45 9 57 37 11 29 50 -156 0 0 11 15 51 11 8 25 18 62 -74 11 7 50 11 23 52 10 29 49 12 1 53 -155 0 0 11 47 42 11 8 27 19 62 -73 11 39 42 11 55 43 11 1 45 12 33 41 -154 0 0 12 19 17 11 8 30 20 63 -72 12 11 17 12 27 16 11 33 24 13 5 10 -153 0 0 12 50 33 11 8 33 21 63 -71 12 42 34 12 58 32 12 4 45 13 36 22 -152 0 0 13 21 31 11 8 37 22 63 -70 13 13 33 13 29 29 12 35 48 14 7 15 -151 0 0 13 52 9 11 8 40 24 63 -69 13 44 12 14 0 6 13 6 31 14 37 47 -150 0 0 14 22 26 11 8 44 25 64 -68 14 14 30 14 30 23 13 36 54 15 8 0 -149 0 0 14 52 23 11 8 47 26 64 -67 14 44 28 15 0 18 14 6 57 15 37 51 -148 0 0 15 21 59 11 8 51 27 64 -65 15 14 4 15 29 53 14 36 38 16 7 21 -147 0 0 15 51 12 11 8 55 28 64 -64 15 43 19 15 59 5 15 5 57 16 36 28 -146 0 0 16 20 2 11 8 59 29 65 -63 16 12 10 16 27 54 15 34 53 17 5 12 -145 0 0 16 48 28 11 9 3 30 65 -62 16 40 38 16 56 19 16 3 26 17 33 32 -144 0 0 17 16 31 11 9 7 31 65 -61 17 8 41 17 24 21 16 31 35 18 1 29 -143 0 0 17 44 10 11 9 12 32 66 -60 17 36 21 17 51 58 16 59 19 18 29 1 -142 0 0 18 11 23 11 9 16 33 66 -59 18 3 35 18 19 11 17 26 39 18 56 8 -141 0 0 18 38 11 11 9 21 34 66 -58 18 30 24 18 45 57 17 53 34 19 22 49 -140 0 0 19 4 33 11 9 26 35 67 -57 18 56 48 19 12 18 18 20 2 19 49 4 -139 0 0 19 30 29 11 9 31 37 67 -56 19 22 44 19 38 13 18 46 5 20 14 53 -138 0 0 19 55 58 11 9 36 38 67 -55 19 48 15 20 3 41 19 11 41 20 40 16 -137 0 0 20 21 0 11 9 41 39 68 -54 20 13 18 20 28 42 19 36 50 21 5 11 -136 0 0 20 45 35 11 9 46 40 68 -53 20 37 54 20 53 16 20 1 31 21 29 39 -135 0 0 21 9 42 11 9 51 41 68 -52 21 2 3 21 17 22 20 25 46 21 53 40 -134 0 0 21 33 22 11 9 56 42 69 -51 21 25 44 21 41 0 20 49 32 22 17 12 -133 0 0 21 56 33 11 10 2 43 69 -50 21 48 56 22 4 10 21 12 50 22 40 17 -132 0 0 22 19 16 11 10 7 44 70 -49 22 11 40 22 26 52 21 35 40 23 2 53 -131 0 0 22 41 31 11 10 13 45 70 -48 22 33 56 22 49 5 21 58 1 23 25 1 -130 0 0 23 3 16 11 10 18 46 70 -46 22 55 43 23 10 50 22 19 54 23 46 40 -129 0 0 23 24 33 11 10 24 47 71 -45 23 17 1 23 32 6 22 41 18 24 7 50 -128 0 0 23 45 21 11 10 30 48 71 -44 23 37 50 23 52 52 23 2 12 24 28 31 -127 0 0 24 5 40 11 10 36 49 72 -43 23 58 10 24 13 10 23 22 38 24 48 43 -126 0 0 24 25 30 11 10 41 50 72 -43 24 18 1 24 32 58 23 42 34 25 8 26 -125 0 0 24 44 50 11 10 47 51 73 -42 24 37 22 24 52 17 24 2 1 25 27 39 -124 0 0 25 3 40 11 10 53 52 73 -41 24 56 14 25 11 7 24 20 58 25 46 24 -123 0 0 25 22 2 11 10 59 53 74 -40 25 14 36 25 29 27 24 39 26 26 4 38 -122 0 0 25 39 54 11 11 5 54 74 -39 25 32 29 25 47 18 24 57 24 26 22 24 -121 0 0 25 57 16 11 11 12 55 75 -38 25 49 53 26 4 39 25 14 52 26 39 40 -120 0 0 26 14 8 11 11 18 56 75 -37 26 6 46 26 21 30 25 31 51 26 56 26 -119 0 0 26 30 31 11 11 24 57 75 -36 26 23 10 26 37 52 25 48 20 27 12 43 -118 0 0 26 46 25 11 11 30 57 76 -35 26 39 5 26 53 45 26 4 19 27 28 31 -117 0 0 27 1 49 11 11 37 58 77 -34 26 54 30 27 9 8 26 19 49 27 43 49 -116 0 0 27 16 43 11 11 43 59 77 -33 27 9 25 27 24 1 26 34 49 27 58 37 -115 0 0 27 31 8 11 11 49 60 78 -32 27 23 51 27 38 25 26 49 19 28 12 57 -114 0 0 27 45 3 11 11 56 61 78 -31 27 37 47 27 52 19 27 3 20 28 26 46 -113 0 0 27 58 28 11 12 2 62 79 -30 27 51 13 28 5 44 27 16 51 28 40 7 -112 0 0 28 11 25 11 12 9 63 79 -29 28 4 10 28 18 39 27 29 52 28 52 58 -111 0 0 28 23 52 11 12 15 64 80 -28 28 16 38 28 31 5 27 42 24 29 5 20 -110 0 0 28 35 49 11 12 22 65 80 -27 28 28 36 28 43 2 27 54 26 29 17 12 -109 0 0 28 47 17 11 12 28 66 81 -26 28 40 5 28 54 29 28 5 59 29 28 36 -108 0 0 28 58 16 11 12 35 67 81 -25 28 51 5 29 5 27 28 17 2 29 39 30 -107 0 0 29 8 46 11 12 41 68 82 -24 29 1 35 29 15 56 28 27 36 29 49 56 -106 0 0 29 18 46 11 12 48 69 83 -24 29 11 37 29 25 56 28 37 41 29 59 52 -105 0 0 29 28 18 11 12 55 70 83 -23 29 21 9 29 35 27 28 47 16 30 9 20 -104 0 0 29 37 20 11 13 1 70 84 -22 29 30 12 29 44 28 28 56 22 30 18 18 -103 0 0 29 45 54 11 13 8 71 85 -21 29 38 46 29 53 1 29 4 59 30 26 48 -102 0 0 29 53 58 11 13 15 72 85 -20 29 46 51 30 1 5 29 13 7 30 34 49 -101 0 0 30 1 34 11 13 21 73 86 -19 29 54 27 30 8 40 29 20 46 30 42 22 -100 0 0 30 8 41 11 13 28 74 87 -18 30 1 35 30 15 46 29 27 56 30 49 26 - 99 0 0 30 15 19 11 13 35 75 87 -17 30 8 13 30 22 24 29 34 37 30 56 1 - 98 0 0 30 21 28 11 13 42 76 88 -16 30 14 23 30 28 33 29 40 49 31 2 8 - 97 0 0 30 27 9 11 13 48 77 89 -15 30 20 4 30 34 13 29 46 32 31 7 46 - 96 0 0 30 32 21 11 13 55 77 90 -15 30 25 17 30 39 25 29 51 46 31 12 56 - 95 0 0 30 37 4 11 14 2 78 91 -14 30 30 0 30 44 8 29 56 32 31 17 37 - 94 0 0 30 41 19 11 14 9 79 92 -13 30 34 16 30 48 23 30 0 48 31 21 50 - 93 0 0 30 45 6 11 14 16 80 93 -12 30 38 2 30 52 9 30 4 36 31 25 35 - 92 0 0 30 48 24 11 14 22 81 94 -11 30 41 21 30 55 27 30 7 56 31 28 52 - 91 0 0 30 51 13 11 14 29 82 95 -10 30 44 10 30 58 16 30 10 47 31 31 40 - 90 0 0 30 53 34 11 14 36 83 97 -9 30 46 32 31 0 37 30 13 9 31 34 0 - 89 0 0 30 55 27 11 14 43 83 99 -8 30 48 25 31 2 29 30 15 2 31 35 52 - 88 0 0 30 56 51 11 14 50 84 101 -7 30 49 49 31 3 54 30 16 27 31 37 16 - 87 0 0 30 57 47 11 14 57 85 104 -7 30 50 45 31 4 50 30 17 24 31 38 11 - 86 0 0 30 58 15 11 15 4 86 108 -6 30 51 13 31 5 17 30 17 51 31 38 39 - 85 0 0 30 58 14 11 15 11 86 115 -5 30 51 12 31 5 16 30 17 51 31 38 38 - 84 0 0 30 57 45 11 15 17 87 126 -4 30 50 43 31 4 47 30 17 21 31 38 9 - 83 0 0 30 56 47 11 15 24 87 148 -3 30 49 45 31 3 50 30 16 23 31 37 12 - 82 0 0 30 55 22 11 15 31 87 189 -2 30 48 19 31 2 24 30 14 57 31 35 47 - 81 0 0 30 53 27 11 15 38 87 225 -1 30 46 25 31 0 30 30 13 2 31 33 53 - 80 0 0 30 51 4 11 15 45 87 242 0 30 44 2 30 58 7 30 10 38 31 31 31 Uncertainty in time = +/- 5 secs Prediction of 2012 Aug 6.0 Data for the target star ------------------------ * name: TYC 1891-01327-1 * constellation : Auriga * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 28 12.2233 DE: +29 37 51.682 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .019, .029 ) * V mag [mag]: 10.1 * B mag [mag]: 10.3 * Apparent position with proper motion RA(deg): 97.2590945056 DE(deg): 29.6201917419 * Equation of equinoxes (radians) : 0.000062971729273 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (608) Adolfine approx. diameter [km]: 26 approx. diameter ["]: .014 distance from Earth [AU]: 2.63000 * orbital information: orbit source: Preston date of fit: 2012 Jul 09 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 884 number of rejected observations: 45 time covered by the observations: 1911 Aug 27 - 2012 Jan 20 1 sigma uncertainty ellipse (major, minor, PA): 0.030, 0.017, 104° remarks: * orbital elements for (608) Adolfine : Mean anomaly = 55.86579130 deg Arg. of pericenter = 72.66153892 deg Long. of node = 293.88146639 deg Inclination = 9.36934976 deg Eccentricity = 0.12370400 Semimajor axis = 3.02648844 AU Perihelion dist = 2.65209972 AU Mag: H = 10.76, G = 0.15 Epoch of elements : MJD 56201.46900000 TDT (2012 Oct 01.469) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 1 608 Adolfine 11h 15.5m UT 10.1 6 28 12.223 29 37 51.68TYC 1891-01327-1 10.3 16.2 26 1.8 2.630 2.061 -0.79 -82.4172 29.631 8.51 -3.44 11.2583 0.00016 0.01985 8.04049 -0.23709 -0.00571 0.00025 2000 55.5908012012 930.00000 72.661539293.881466 9.3693500.12370400 3.0264884 2.652099710.8 5.00.15 RATE 1.8719550 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.036 0.033 100 3.37 0.033 0 0 3 2 056145.0020121001_1327-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Aug 06, 17:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org