IOTA/IOTA-ES occultation update for (202) Chryseis / TYC 0059-00966-1 event on 2009 Nov 09, 03:34 UT Visible from Summary ------- On 2009 Nov 09 UT, the 86 km diameter asteroid (202) Chryseis will occult a 12.0 mag star in the constellation Cetus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 0.6 mag to 11.8 mag (the magnitude of the asteroid) for at most 6.7 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: 93 * date and approx. time of event: 2009 Nov 09, 03:26 - 2009 Nov 09, 03:41 UT * magnitude of target star: 12.0 * magnitude drop [mag]: 0.6 * estimated maximum duration [s]: 6.7 * Moon: 57 % sunlit, 80° distance * Sun: 167° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 97 * 1 sigma uncertainty interval [path widths]: +/- 0.47 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .034 +/- .027) * 1 sigma uncertainty ellipse (major, minor, PA): ( .034", .027", 83° ) * approx speed of asteroid's shadow [km/s]: 12.9504 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0059-00966-1 by 202 Chryseis on 2009 Nov 9 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 -144 0 0 11 16 58 3 41 31 1 85 -8 11 43 20 10 50 42 12 8 13 10 26 6 -143 0 0 11 22 29 3 41 31 2 85 -9 11 48 52 10 56 13 12 13 46 10 31 36 -142 0 0 11 28 20 3 41 30 3 86 -10 11 54 43 11 2 2 12 19 37 10 37 25 -141 0 0 11 34 29 3 41 30 4 86 -11 12 0 53 11 8 11 12 25 48 10 43 33 -140 0 0 11 40 57 3 41 29 5 86 -12 12 7 22 11 14 38 12 32 17 10 50 0 -139 0 0 11 47 44 3 41 28 6 86 -13 12 14 9 11 21 24 12 39 6 10 56 45 -138 0 0 11 54 49 3 41 27 7 86 -14 12 21 15 11 28 28 12 46 13 11 3 48 -137 0 0 12 2 12 3 41 26 8 87 -15 12 28 40 11 35 51 12 53 38 11 11 10 -136 0 0 12 9 54 3 41 25 9 87 -16 12 36 22 11 43 32 13 1 21 11 18 50 -135 0 0 12 17 54 3 41 23 10 87 -17 12 44 23 11 51 30 13 9 23 11 26 48 -134 0 0 12 26 11 3 41 22 10 87 -18 12 52 42 11 59 47 13 17 42 11 35 3 -133 0 0 12 34 46 3 41 20 11 87 -19 13 1 18 12 8 21 13 26 20 11 43 37 -132 0 0 12 43 39 3 41 18 12 88 -20 13 10 12 12 17 13 13 35 14 11 52 27 -131 0 0 12 52 49 3 41 16 13 88 -21 13 19 23 12 26 22 13 44 26 12 1 35 -130 0 0 13 2 16 3 41 14 14 88 -22 13 28 51 12 35 47 13 53 56 12 11 0 -129 0 0 13 12 0 3 41 11 15 88 -23 13 38 36 12 45 30 14 3 42 12 20 42 -128 0 0 13 22 0 3 41 9 16 89 -24 13 48 37 12 55 30 14 13 45 12 30 40 -127 0 0 13 32 17 3 41 6 17 89 -25 13 58 56 13 5 45 14 24 4 12 40 55 -126 0 0 13 42 51 3 41 3 18 89 -26 14 9 30 13 16 17 14 34 40 12 51 25 -125 0 0 13 53 40 3 41 0 19 90 -27 14 20 21 13 27 5 14 45 32 13 2 12 -124 0 0 14 4 45 3 40 57 20 90 -28 14 31 27 13 38 9 14 56 39 13 13 15 -123 0 0 14 16 6 3 40 53 21 90 -29 14 42 49 13 49 29 15 8 2 13 24 33 -122 0 0 14 27 42 3 40 50 22 91 -30 14 54 26 14 1 3 15 19 41 13 36 7 -121 0 0 14 39 33 3 40 46 23 91 -31 15 6 19 14 12 53 15 31 35 13 47 55 -120 0 0 14 51 39 3 40 43 24 91 -32 15 18 26 14 24 58 15 43 43 13 59 58 -119 0 0 15 3 59 3 40 39 25 92 -33 15 30 48 14 37 17 15 56 6 14 12 16 -118 0 0 15 16 34 3 40 35 26 92 -34 15 43 24 14 49 50 16 8 44 14 24 49 -117 0 0 15 29 23 3 40 30 27 92 -35 15 56 14 15 2 38 16 21 35 14 37 35 -116 0 0 15 42 26 3 40 26 28 93 -36 16 9 19 15 15 39 16 34 41 14 50 35 -115 0 0 15 55 42 3 40 22 29 93 -37 16 22 36 15 28 54 16 48 0 15 3 48 -114 0 0 16 9 11 3 40 17 30 94 -38 16 36 7 15 42 22 17 1 32 15 17 15 -113 0 0 16 22 53 3 40 13 31 94 -38 16 49 51 15 56 3 17 15 17 15 30 55 -112 0 0 16 36 49 3 40 8 31 94 -39 17 3 47 16 9 56 17 29 15 15 44 47 -111 0 0 16 50 56 3 40 3 32 95 -40 17 17 56 16 24 2 17 43 25 15 58 52 -110 0 0 17 5 15 3 39 58 33 95 -41 17 32 17 16 38 20 17 57 47 16 13 8 -109 0 0 17 19 47 3 39 53 34 96 -42 17 46 49 16 52 50 18 12 21 16 27 37 -108 0 0 17 34 29 3 39 47 35 96 -43 18 1 34 17 7 32 18 27 7 16 42 17 -107 0 0 17 49 23 3 39 42 36 97 -44 18 16 29 17 22 24 18 42 3 16 57 8 -106 0 0 18 4 28 3 39 36 37 98 -45 18 31 35 17 37 27 18 57 10 17 12 10 -105 0 0 18 19 43 3 39 31 38 98 -46 18 46 51 17 52 41 19 12 28 17 27 22 -104 0 0 18 35 8 3 39 25 39 99 -47 19 2 18 18 8 5 19 27 56 17 42 45 -103 0 0 18 50 43 3 39 19 39 99 -48 19 17 54 18 23 39 19 43 34 17 58 18 -102 0 0 19 6 28 3 39 13 40 100 -49 19 33 40 18 39 22 19 59 21 18 14 0 -101 0 0 19 22 21 3 39 7 41 101 -50 19 49 35 18 55 14 20 15 18 18 29 51 -100 0 0 19 38 24 3 39 1 42 101 -51 20 5 39 19 11 16 20 31 23 18 45 51 - 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2007 Aug 21 1 sigma uncertainty ellipse (major, minor, PA): 0.024, 0.013, 75° remarks: * orbital elements for (202) Chryseis : Mean anomaly = 281.57224357 deg Arg. of pericenter = 1.14712118 deg Long. of node = 136.87133292 deg Inclination = 8.85362446 deg Eccentricity = 0.10013796 Semimajor axis = 3.06982668 AU Perihelion dist = 2.76242049 AU Mag: H = 7.30, G = 0.15 Epoch of elements : MJD 55144.14900000 TDT (2009 Nov 09.149) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 9 202 Chryseis 3h 34.2m UT 12.0 3 19 51.564 4 49 25.59TYC 0059-00966-1 12.3 11.8 86 6.7 2.066 -2.001 -8.59 -52.0386 4.827 122.40 -16.88 3.5703 -0.12629 0.43961 -7.02523 -2.01895 -0.00060 0.00123 2000 280.811958200911 5.00000 1.147121136.871333 8.8536240.10013796 3.0698267 2.7624205 7.4 5.00.15 RATE 1.8324550 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.034 0.027 83 1.47 0.027 0 54545.5020091109_0966-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 16:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org