IOTA/IOTA-ES occultation update for (671) Carnegia / TYC 1792-00771-1 event on 2012 Oct 24, 04:52 UT Visible from Africa, Caribbean, Mexico Summary ------- On 2012 Oct 24 UT, the 59 km diameter asteroid (671) Carnegia will occult a 12.2 mag star in the constellation Aries for observers along a path across Africa, Caribbean, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.5 mag to 14.6 mag (the magnitude of the asteroid) for at most 5.5 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: 68 * date and approx. time of event: 2012 Oct 24, 04:43 - 2012 Oct 24, 05:02 UT * geocentric midpoint of event [JD]: 2456224.70305833 * magnitude of target star: 12.2 * magnitude drop [mag]: 2.5 * estimated maximum duration [s]: 5.5 * Moon: 71 % sunlit, 87° distance * Sun: 156° distance * rough path description: Africa, Caribbean, Mexico The occultation path -------------------- * approximate projected width [km]: 59 * 1 sigma uncertainty interval [path widths]: +/- 0.88 * 1 sigma uncertainty interval [seconds]: +/- 6.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .056 +/- .036) * 1 sigma uncertainty ellipse (major, minor, PA): ( .057", .035", 83° ) * approx speed of asteroid's shadow [km/s]: 10.6544 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1792-00771-1 by 671 Carnegia on 2012 Oct 24 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 -149 0 0 0 47 20 5 2 22 1 63 -20 1 5 16 0 29 23 1 36 49 - 0 2 12 -148 0 0 1 17 44 5 2 21 2 63 -21 1 35 40 0 59 48 2 7 12 0 28 14 -147 0 0 1 48 3 5 2 21 3 63 -22 2 5 58 1 30 8 2 37 30 0 58 35 -146 0 0 2 18 16 5 2 20 4 63 -23 2 36 11 2 0 22 3 7 41 1 28 50 -145 0 0 2 48 23 5 2 19 5 63 -25 3 6 16 2 30 29 3 37 45 1 58 59 -144 0 0 3 18 21 5 2 18 7 63 -26 3 36 14 3 0 28 4 7 41 2 29 0 -143 0 0 3 48 12 5 2 17 8 63 -27 4 6 3 3 30 20 4 37 29 2 58 53 -142 0 0 4 17 53 5 2 15 9 64 -28 4 35 43 4 0 2 5 7 7 3 28 37 -141 0 0 4 47 24 5 2 13 10 64 -29 5 5 14 4 29 34 5 36 36 3 58 11 -140 0 0 5 16 45 5 2 11 11 64 -30 5 34 33 4 58 56 6 5 53 4 27 35 -139 0 0 5 45 54 5 2 9 12 64 -31 6 3 42 5 28 7 6 35 0 4 56 48 -138 0 0 6 14 52 5 2 6 13 64 -32 6 32 38 5 57 6 7 3 54 5 25 49 -137 0 0 6 43 37 5 2 3 14 64 -33 7 1 22 6 25 52 7 32 35 5 54 37 -136 0 0 7 12 9 5 2 0 15 64 -34 7 29 52 6 54 25 8 1 3 6 23 13 -135 0 0 7 40 27 5 1 57 16 64 -35 7 58 8 7 22 45 8 29 17 6 51 35 -134 0 0 8 8 30 5 1 54 18 64 -36 8 26 10 7 50 49 8 57 16 7 19 42 -133 0 0 8 36 18 5 1 51 19 65 -37 8 53 57 8 18 39 9 25 0 7 47 35 -132 0 0 9 3 51 5 1 47 20 65 -38 9 21 28 8 46 13 9 52 28 8 15 12 -131 0 0 9 31 7 5 1 43 21 65 -39 9 48 43 9 13 32 10 19 40 8 42 33 -130 0 0 9 58 7 5 1 39 22 65 -40 10 15 41 9 40 33 10 46 35 9 9 37 -129 0 0 10 24 50 5 1 35 23 65 -41 10 42 22 10 7 17 11 13 13 9 36 25 -128 0 0 10 51 15 5 1 30 24 65 -42 11 8 45 10 33 44 11 39 34 10 2 55 -127 0 0 11 17 22 5 1 26 25 66 -43 11 34 50 10 59 53 12 5 35 10 29 6 -126 0 0 11 43 10 5 1 21 26 66 -44 12 0 37 11 25 43 12 31 19 10 55 0 -125 0 0 12 8 39 5 1 16 27 66 -45 12 26 4 11 51 14 12 56 43 11 20 34 -124 0 0 12 33 49 5 1 11 28 66 -46 12 51 12 12 16 26 13 21 48 11 45 49 -123 0 0 12 58 39 5 1 6 29 66 -47 13 16 0 12 41 18 13 46 33 12 10 44 -122 0 0 13 23 9 5 1 0 30 67 -48 13 40 29 13 5 50 14 10 57 12 35 20 -121 0 0 13 47 19 5 0 55 31 67 -49 14 4 36 13 30 1 14 35 2 12 59 35 -120 0 0 14 11 8 5 0 49 32 67 -50 14 28 23 13 53 52 14 58 45 13 23 29 -119 0 0 14 34 35 5 0 43 33 67 -51 14 51 49 14 17 22 15 22 7 13 47 2 -118 0 0 14 57 42 5 0 38 34 67 -52 15 14 53 14 40 30 15 45 8 14 10 14 -117 0 0 15 20 26 5 0 31 35 68 -53 15 37 36 15 3 17 16 7 48 14 33 4 -116 0 0 15 42 49 5 0 25 36 68 -54 15 59 57 15 25 41 16 30 5 14 55 32 -115 0 0 16 4 50 5 0 19 37 68 -55 16 21 55 15 47 44 16 52 0 15 17 38 -114 0 0 16 26 28 5 0 13 38 68 -56 16 43 32 16 9 24 17 13 33 15 39 22 -113 0 0 16 47 44 5 0 6 39 69 -57 17 4 45 16 30 42 17 34 43 16 0 43 -112 0 0 17 8 37 4 59 59 40 69 -58 17 25 37 16 51 37 17 55 31 16 21 42 -111 0 0 17 29 7 4 59 53 41 69 -58 17 46 5 17 12 9 18 15 56 16 42 17 -110 0 0 17 49 14 4 59 46 42 70 -59 18 6 10 17 32 18 18 35 57 17 2 30 -109 0 0 18 8 58 4 59 39 43 70 -60 18 25 52 17 52 4 18 55 36 17 22 19 -108 0 0 18 28 18 4 59 32 44 70 -61 18 45 10 18 11 26 19 14 51 17 41 45 -107 0 0 18 47 15 4 59 25 45 70 -62 19 4 5 18 30 25 19 33 42 18 0 47 -106 0 0 19 5 49 4 59 17 46 71 -63 19 22 37 18 49 0 19 52 11 18 19 26 -105 0 0 19 23 58 4 59 10 47 71 -64 19 40 44 19 7 12 20 10 15 18 37 40 -104 0 0 19 41 44 4 59 3 48 71 -64 19 58 28 19 25 0 20 27 56 18 55 32 -103 0 0 19 59 6 4 58 55 49 72 -65 20 15 49 19 42 24 20 45 13 19 12 59 -102 0 0 20 16 4 4 58 48 50 72 -66 20 32 45 19 59 24 21 2 6 19 30 2 -101 0 0 20 32 38 4 58 40 51 72 -67 20 49 17 20 15 59 21 18 35 19 46 41 -100 0 0 20 48 48 4 58 32 52 73 -68 21 5 25 20 32 11 21 34 40 20 2 56 - 99 0 0 21 4 34 4 58 24 53 73 -68 21 21 10 20 47 59 21 50 21 20 18 47 - 98 0 0 21 19 56 4 58 16 54 73 -69 21 36 30 21 3 22 22 5 38 20 34 13 - 97 0 0 21 34 54 4 58 9 55 74 -70 21 51 26 21 18 22 22 20 31 20 49 15 - 96 0 0 21 49 27 4 58 1 56 74 -71 22 5 57 21 32 57 22 35 0 21 3 53 - 95 0 0 22 3 36 4 57 53 57 74 -71 22 20 5 21 47 8 22 49 5 21 18 7 - 94 0 0 22 17 21 4 57 44 57 75 -72 22 33 48 22 0 54 23 2 45 21 31 56 - 93 0 0 22 30 42 4 57 36 58 75 -72 22 47 7 22 14 16 23 16 1 21 45 21 - 92 0 0 22 43 38 4 57 28 59 75 -73 23 0 2 22 27 14 23 28 54 21 58 22 - 91 0 0 22 56 11 4 57 20 60 76 -74 23 12 33 22 39 48 23 41 22 22 10 58 - 90 0 0 23 8 19 4 57 11 61 76 -74 23 24 39 22 51 57 23 53 26 22 23 10 - 89 0 0 23 20 2 4 57 3 62 76 -75 23 36 22 23 3 43 24 5 6 22 34 58 - 88 0 0 23 31 22 4 56 55 63 77 -75 23 47 40 23 15 3 24 16 21 22 46 21 - 87 0 0 23 42 17 4 56 46 64 77 -75 23 58 34 23 26 0 24 27 13 22 57 20 - 86 0 0 23 52 48 4 56 38 65 77 -76 24 9 4 23 36 32 24 37 41 23 7 55 - 85 0 0 24 2 55 4 56 29 66 77 -76 24 19 9 23 46 41 24 47 44 23 18 5 - 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54 0 0 25 58 34 4 51 54 86 290 -64 26 14 34 25 42 35 26 42 43 25 14 25 - 53 0 0 25 55 58 4 51 45 86 286 -63 26 11 58 25 39 58 26 40 7 25 11 48 - 52 0 0 25 52 57 4 51 36 85 284 -63 26 8 58 25 36 57 26 37 8 25 8 46 - 51 0 0 25 49 33 4 51 27 84 283 -62 26 5 34 25 33 33 26 33 45 25 5 21 - 50 0 0 25 45 46 4 51 18 83 282 -61 26 1 47 25 29 44 26 29 58 25 1 32 - 49 0 0 25 41 34 4 51 9 83 282 -60 25 57 36 25 25 32 26 25 48 24 57 19 - 48 0 0 25 36 59 4 51 0 82 281 -60 25 53 1 25 20 56 26 21 15 24 52 42 - 47 0 0 25 31 59 4 50 51 81 281 -59 25 48 2 25 15 56 26 16 17 24 47 41 - 46 0 0 25 26 36 4 50 42 80 281 -58 25 42 40 25 10 33 26 10 56 24 42 16 - 45 0 0 25 20 49 4 50 33 79 281 -57 25 36 54 25 4 45 26 5 11 24 36 27 - 44 0 0 25 14 39 4 50 24 78 281 -56 25 30 44 24 58 33 25 59 3 24 30 14 - 43 0 0 25 8 4 4 50 15 77 281 -56 25 24 10 24 51 58 25 52 30 24 23 37 - 42 0 0 25 1 5 4 50 6 77 281 -55 25 17 12 24 44 58 25 45 34 24 16 36 - 41 0 0 24 53 43 4 49 57 76 282 -54 25 9 51 24 37 35 25 38 14 24 9 11 - 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25 0 0 22 1 13 4 47 37 61 286 -41 22 17 42 21 44 44 22 46 42 21 15 44 - 24 0 0 21 47 1 4 47 28 60 286 -40 22 3 32 21 30 31 22 32 35 21 1 27 - 23 0 0 21 32 26 4 47 20 59 287 -39 21 48 58 21 15 53 22 18 3 20 46 47 - 22 0 0 21 17 26 4 47 12 59 287 -38 21 33 59 21 0 52 22 3 8 20 31 42 - 21 0 0 21 2 2 4 47 3 58 287 -37 21 18 37 20 45 26 21 47 49 20 16 14 - 20 0 0 20 46 14 4 46 55 57 288 -36 21 2 51 20 29 37 21 32 6 20 0 21 - 19 0 0 20 30 2 4 46 47 56 288 -35 20 46 41 20 13 23 21 15 59 19 44 4 - 18 0 0 20 13 26 4 46 39 55 288 -34 20 30 7 19 56 45 20 59 28 19 27 24 - 17 0 0 19 56 27 4 46 31 54 289 -33 20 13 9 19 39 44 20 42 34 19 10 19 - 16 0 0 19 39 3 4 46 23 53 289 -32 19 55 48 19 22 19 20 25 15 18 52 51 - 15 0 0 19 21 16 4 46 15 52 289 -32 19 38 3 19 4 30 20 7 33 18 34 58 - 14 0 0 19 3 6 4 46 7 51 289 -31 19 19 54 18 46 18 19 49 28 18 16 43 - 13 0 0 18 44 32 4 45 59 50 290 -30 19 1 22 18 27 41 19 30 59 17 58 3 - 12 0 0 18 25 34 4 45 51 49 290 -29 18 42 26 18 8 42 19 12 7 17 39 0 - 11 0 0 18 6 13 4 45 44 48 290 -28 18 23 7 17 49 19 18 52 51 17 19 34 - 10 0 0 17 46 29 4 45 36 47 291 -27 18 3 25 17 29 33 18 33 12 16 59 45 - 9 0 0 17 26 22 4 45 29 46 291 -26 17 43 20 17 9 24 18 13 11 16 39 33 - 8 0 0 17 5 52 4 45 21 45 291 -25 17 22 52 16 48 53 17 52 46 16 18 57 - 7 0 0 16 45 0 4 45 14 44 291 -24 17 2 1 16 27 58 17 31 59 15 57 59 - 6 0 0 16 23 45 4 45 7 43 292 -23 16 40 48 16 6 41 17 10 49 15 36 39 - 5 0 0 16 2 7 4 45 0 42 292 -22 16 19 13 15 45 2 16 49 17 15 14 56 - 4 0 0 15 40 8 4 44 53 41 292 -21 15 57 15 15 23 0 16 27 23 14 52 51 - 3 0 0 15 17 46 4 44 46 40 292 -20 15 34 56 15 0 37 16 5 7 14 30 24 - 2 0 0 14 55 3 4 44 39 39 293 -19 15 12 15 14 37 52 15 42 29 14 7 36 - 1 0 0 14 31 59 4 44 33 38 293 -18 14 49 12 14 14 45 15 19 30 13 44 26 0 0 0 14 8 33 4 44 26 37 293 -17 14 25 48 13 51 18 14 56 10 13 20 55 1 0 0 13 44 47 4 44 20 36 293 -16 14 2 4 13 27 29 14 32 29 12 57 3 2 0 0 13 20 39 4 44 13 35 294 -15 13 37 59 13 3 20 14 8 27 12 32 51 3 0 0 12 56 12 4 44 7 34 294 -14 13 13 33 12 38 51 13 44 5 12 8 18 4 0 0 12 31 25 4 44 1 33 294 -13 12 48 48 12 14 2 13 19 23 11 43 26 5 0 0 12 6 18 4 43 55 32 294 -12 12 23 43 11 48 54 12 54 21 11 18 14 6 0 0 11 40 53 4 43 50 31 294 -11 11 58 19 11 23 26 12 29 0 10 52 44 7 0 0 11 15 8 4 43 44 30 295 -10 11 32 36 10 57 40 12 3 21 10 26 54 8 0 0 10 49 5 4 43 39 29 295 -9 11 6 35 10 31 35 11 37 23 10 0 46 9 0 0 10 22 44 4 43 34 28 295 -8 10 40 16 10 5 13 11 11 7 9 34 21 10 0 0 9 56 6 4 43 29 27 295 -7 10 13 40 9 38 33 10 44 33 9 7 38 11 0 0 9 29 11 4 43 24 26 295 -6 9 46 46 9 11 36 10 17 43 8 40 38 12 0 0 9 2 0 4 43 19 25 295 -5 9 19 36 8 44 23 9 50 35 8 13 22 13 0 0 8 34 32 4 43 14 23 296 -4 8 52 10 8 16 54 9 23 12 7 45 50 14 0 0 8 6 49 4 43 10 22 296 -3 8 24 29 7 49 9 8 55 33 7 18 3 15 0 0 7 38 51 4 43 6 21 296 -2 7 56 32 7 21 10 8 27 40 6 50 1 16 0 0 7 10 39 4 43 2 20 296 -1 7 28 22 6 52 56 7 59 31 6 21 45 Uncertainty in time = +/- 8 secs Prediction of 2012 Sep 27.0 Data for the target star ------------------------ * name: TYC 1792-00771-1 * constellation : Aries * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 03 14 38.3524 DE: +26 44 48.552 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .045, .030 ) * V mag [mag]: 12.2 * B mag [mag]: 12.7 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (671) Carnegia approx. diameter [km]: 59 approx. diameter ["]: .041 distance from Earth [AU]: 2.00600 * orbital information: orbit source: Preston date of fit: 2012 Sep 26 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1042 number of rejected observations: 71 time covered by the observations: 1914 Nov 09 - 2012 Sep 09 1 sigma uncertainty ellipse (major, minor, PA): 0.035, 0.019, 70° remarks: * orbital elements for (671) Carnegia : Mean anomaly = 318.17137862 deg Arg. of pericenter = 92.94792341 deg Long. of node = 0.72939291 deg Inclination = 8.02815021 deg Eccentricity = 0.06869106 Semimajor axis = 3.09458591 AU Perihelion dist = 2.88201553 AU Mag: H = 10.16, G = 0.15 Epoch of elements : MJD 56224.20300000 TDT (2012 Oct 24.203) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 24 671 Carnegia 4h 52.4m UT 12.2 3 14 38.352 26 44 48.55TYC 1792-00771-1 12.7 14.6 59 5.5 2.006 -1.969 0.57 -57.4416 26.747 102.95 -11.89 4.8734 -0.00179 -0.01522 -6.01222 0.13053 -0.00191 -0.00135 2000 317.41042320121020.00000 92.947923 0.729393 8.0281500.06869106 3.0945859 2.882015510.2 5.00.15 RATE 1.8105070 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.057 0.035 83 1.88 0.036 0 0 4 2 056197.0020121024_0771-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Sep 26, 22:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org