IOTA/IOTA-ES occultation update for (2929) Harris / TYC 0278-00741-1 event on 2009 Nov 05, 04:51 UT Visible from Summary ------- On 2009 Nov 05 UT, the 26 km diameter asteroid (2929) Harris will occult a 8.9 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.5 mag to 17.4 mag (the magnitude of the asteroid) for at most 0.7 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: 18 * date and approx. time of event: 2009 Nov 05, 04:49 - 2009 Nov 05, 04:50 UT * magnitude of target star: 8.9 * magnitude drop [mag]: 8.5 * estimated maximum duration [s]: 0.7 * Moon: 93 % sunlit, 101° distance * Sun: 48° distance * rough path description: Additional comments ------------------- 4.7" double star The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 3.69 * 1 sigma uncertainty interval [seconds]: +/- 3.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .056 +/- .037) * 1 sigma uncertainty ellipse (major, minor, PA): ( .056", .037", 98° ) * approx speed of asteroid's shadow [km/s]: 37.2828 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0278-00741-1 by 2929 Harris on 2009 Nov 5 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 - 34 0 0 37 21 48 4 49 18 0 83 -47 37 14 7 37 29 29 .. .. .. 38 26 25 - 33 0 0 37 27 25 4 49 18 1 84 -46 37 19 45 37 35 6 .. .. .. 38 31 59 - 32 0 0 37 32 48 4 49 18 2 84 -45 37 25 8 37 40 28 .. .. .. 38 37 20 - 31 0 0 37 37 56 4 49 19 3 85 -44 37 30 17 37 45 37 .. .. .. 38 42 26 - 30 0 0 37 42 51 4 49 19 3 86 -44 37 35 11 37 50 31 .. .. .. 38 47 19 - 29 0 0 37 47 31 4 49 19 4 86 -43 37 39 51 37 55 10 .. .. .. 38 51 57 - 28 0 0 37 51 56 4 49 19 5 87 -42 37 44 17 37 59 36 36 48 2 38 56 20 - 27 0 0 37 56 8 4 49 19 6 88 -41 37 48 29 38 3 47 36 52 15 39 0 30 - 26 0 0 38 0 5 4 49 20 7 88 -41 37 52 26 38 7 44 36 56 14 39 4 25 - 25 0 0 38 3 47 4 49 20 7 89 -40 37 56 9 38 11 26 36 59 58 39 8 6 - 24 0 0 38 7 15 4 49 20 8 89 -39 37 59 37 38 14 54 37 3 27 39 11 32 - 23 0 0 38 10 29 4 49 21 9 90 -38 38 2 51 38 18 7 37 6 42 39 14 45 - 22 0 0 38 13 28 4 49 21 10 91 -37 38 5 50 38 21 6 37 9 43 39 17 42 - 21 0 0 38 16 12 4 49 21 10 91 -37 38 8 35 38 23 51 37 12 28 39 20 26 - 20 0 0 38 18 43 4 49 22 11 92 -36 38 11 5 38 26 21 37 15 0 39 22 55 - 19 0 0 38 20 58 4 49 22 12 93 -35 38 13 21 38 28 36 37 17 16 39 25 9 - 18 0 0 38 22 59 4 49 23 13 93 -34 38 15 22 38 30 37 37 19 18 39 27 9 - 17 0 0 38 24 46 4 49 24 14 94 -33 38 17 8 38 32 23 37 21 6 39 28 55 - 16 0 0 38 26 18 4 49 24 14 94 -33 38 18 40 38 33 55 37 22 38 39 30 26 - 15 0 0 38 27 35 4 49 25 15 95 -32 38 19 58 38 35 13 37 23 56 39 31 43 - 14 0 0 38 28 38 4 49 26 16 96 -31 38 21 1 38 36 15 37 24 59 39 32 45 - 13 0 0 38 29 26 4 49 26 17 96 -30 38 21 49 38 37 3 37 25 48 39 33 33 - 12 0 0 38 29 59 4 49 27 18 97 -30 38 22 22 38 37 37 37 26 22 39 34 6 - 11 0 0 38 30 18 4 49 28 18 98 -29 38 22 41 38 37 56 37 26 41 39 34 25 - 10 0 0 38 30 23 4 49 29 19 98 -28 38 22 46 38 38 0 37 26 45 39 34 29 - 9 0 0 38 30 12 4 49 29 20 99 -27 38 22 35 38 37 50 37 26 35 39 34 19 - 8 0 0 38 29 47 4 49 30 21 100 -26 38 22 10 38 37 25 37 26 10 39 33 54 - 7 0 0 38 29 8 4 49 31 21 100 -26 38 21 31 38 36 45 37 25 30 39 33 15 - 6 0 0 38 28 14 4 49 32 22 101 -25 38 20 37 38 35 51 37 24 36 39 32 21 - 5 0 0 38 27 5 4 49 33 23 102 -24 38 19 28 38 34 42 37 23 26 39 31 12 - 4 0 0 38 25 41 4 49 34 24 102 -23 38 18 4 38 33 19 37 22 2 39 29 49 - 3 0 0 38 24 3 4 49 35 25 103 -22 38 16 26 38 31 41 37 20 24 39 28 12 - 2 0 0 38 22 10 4 49 36 25 104 -22 38 14 33 38 29 48 37 18 30 39 26 20 - 1 0 0 38 20 3 4 49 37 26 104 -21 38 12 25 38 27 41 37 16 22 39 24 13 0 0 0 38 17 41 4 49 39 27 105 -20 38 10 3 38 25 19 37 13 59 39 21 52 1 0 0 38 15 4 4 49 40 28 106 -19 38 7 26 38 22 42 37 11 21 39 19 16 2 0 0 38 12 13 4 49 41 28 107 -19 38 4 35 38 19 51 37 8 28 39 16 26 3 0 0 38 9 7 4 49 42 29 107 -18 38 1 29 38 16 45 37 5 21 39 13 21 4 0 0 38 5 46 4 49 43 30 108 -17 37 58 8 38 13 24 37 1 59 39 10 2 5 0 0 38 2 11 4 49 45 31 109 -16 37 54 32 38 9 49 36 58 23 39 6 28 6 0 0 37 58 21 4 49 46 31 109 -15 37 50 42 38 6 0 36 54 31 39 2 40 7 0 0 37 54 16 4 49 47 32 110 -15 37 46 38 38 1 55 36 50 25 38 58 37 8 0 0 37 49 57 4 49 49 33 111 -14 37 42 18 37 57 37 36 46 4 38 54 20 9 0 0 37 45 24 4 49 50 34 112 -13 37 37 45 37 53 3 36 41 29 38 49 48 10 0 0 37 40 35 4 49 52 35 112 -12 37 32 56 37 48 15 36 36 39 38 45 2 11 0 0 37 35 33 4 49 53 35 113 -11 37 27 53 37 43 13 36 31 34 38 40 1 12 0 0 37 30 16 4 49 55 36 114 -11 37 22 36 37 37 56 36 26 15 38 34 46 13 0 0 37 24 44 4 49 56 37 115 -10 37 17 4 37 32 24 36 20 41 38 29 16 14 0 0 37 18 58 4 49 58 38 116 -9 37 11 17 37 26 38 36 14 52 38 23 32 15 0 0 37 12 57 4 49 59 38 116 -8 37 5 16 37 20 38 36 8 50 38 17 34 16 0 0 37 6 42 4 50 1 39 117 -7 36 59 1 37 14 23 36 2 32 38 11 21 17 0 0 37 0 12 4 50 3 40 118 -7 36 52 31 37 7 54 35 56 0 38 4 55 18 0 0 36 53 29 4 50 4 41 119 -6 36 45 47 37 1 10 35 49 14 37 58 13 19 0 0 36 46 30 4 50 6 41 120 -5 36 38 49 36 54 13 35 42 13 37 51 18 20 0 0 36 39 18 4 50 8 42 121 -4 36 31 36 36 47 1 35 34 58 37 44 8 21 0 0 36 31 51 4 50 10 43 122 -3 36 24 9 36 39 34 35 27 29 37 36 44 22 0 0 36 24 10 4 50 12 44 122 -2 36 16 28 36 31 54 35 19 45 37 29 6 23 0 0 36 16 15 4 50 13 44 123 -2 36 8 32 36 23 59 35 11 47 37 21 14 24 0 0 36 8 6 4 50 15 45 124 -1 36 0 23 36 15 50 35 3 35 37 13 8 25 0 0 35 59 43 4 50 17 46 125 0 35 51 59 36 7 27 34 55 9 37 4 48 Uncertainty in time = +/- 4 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 0278-00741-1 * constellation : Virgo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 11 46 51.3664 DE: +05 31 50.582 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .021 ) * V mag [mag]: 8.9 * B mag [mag]: 9.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2929) Harris approx. diameter [km]: 26 approx. diameter ["]: .010 distance from Earth [AU]: 3.47300 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 712 number of rejected observations: 23 time covered by the observations: 1938 Feb 19 - 2008 Feb 13 1 sigma uncertainty ellipse (major, minor, PA): 0.051, 0.030, 100° remarks: * orbital elements for (2929) Harris : Mean anomaly = 352.55399910 deg Arg. of pericenter = 26.40201025 deg Long. of node = 142.79989300 deg Inclination = 14.88068099 deg Eccentricity = 0.07010915 Semimajor axis = 3.12199952 AU Perihelion dist = 2.90311879 AU Mag: H = 11.58, G = 0.15 Epoch of elements : MJD 55140.20300000 TDT (2009 Nov 05.203) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 5 2929 Harris 4h 51.9m UT 8.9 11 46 51.366 5 31 50.58TYC 0278-00741-1 9.9 17.4 26 0.7 3.473 3.451 -13.60 59.1707 5.535 102.92 -15.71 4.8656 0.09826 0.37061 20.34693 -5.36921 -0.00388 0.00196 2000 352.517729200911 5.00000 26.402010142.799893 14.8806810.07010915 3.1219995 2.903118811.6 5.00.15 RATE 1.7867130 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.056 0.037 98 4.69 0.038 0 54581.5020091105_0741-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 09:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org