IOTA/IOTA-ES occultation update for (4911) Rosenzweig / TYC 0734-00741-1 event on 2009 Nov 07, 20:23 UT Visible from Summary ------- On 2009 Nov 07 UT, the 15 km diameter asteroid (4911) Rosenzweig will occult a 10.3 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.1 mag to 16.4 mag (the magnitude of the asteroid) for at most 2.0 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 8 * date and approx. time of event: 2009 Nov 07, 20:14 - 2009 Nov 07, 20:33 UT * magnitude of target star: 10.3 * magnitude drop [mag]: 6.1 * estimated maximum duration [s]: 2.0 * Moon: 70 % sunlit, 23° distance * Sun: 131° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 8.65 * 1 sigma uncertainty interval [seconds]: +/- 13.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .116 +/- .075) * 1 sigma uncertainty ellipse (major, minor, PA): ( .116", .075", 95° ) * approx speed of asteroid's shadow [km/s]: 7.2166 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0734-00741-1 by 4911 Rosenzweig on 2009 Nov 7 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 E. Longitude Latitude U.T. Alt Az Alt o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude 8 17 2 63 0 49 20 14 14 7 82 -34 9 13 11 63 6 59 7 17 17 62 53 59 21 0 41 64 4 37 ... .. .. .. .. .. 17 7 14 62 36 22 20 14 29 11 89 -38 17 43 32 62 39 0 16 30 2 62 33 34 26 36 28 63 6 47 - 1 23 55 60 26 23 23 4 59 61 46 37 20 14 43 13 95 -40 23 33 44 61 47 59 22 35 48 61 45 9 30 56 48 62 1 40 12 23 40 60 59 53 27 37 3 60 46 57 20 14 58 16 98 -42 28 1 24 60 47 39 27 12 25 60 46 12 34 25 55 60 52 57 19 7 27 60 22 12 31 14 6 59 42 27 20 15 12 18 101 -44 31 35 28 59 42 44 30 52 33 59 42 8 37 17 44 59 42 31 24 0 21 59 29 26 34 12 3 58 35 26 20 15 27 19 104 -46 34 31 12 58 35 26 33 52 45 58 35 25 39 41 11 58 31 23 27 49 58 58 29 48 36 40 37 57 27 11 20 15 41 21 106 -47 36 58 4 57 26 59 36 23 4 57 27 23 41 42 24 57 20 9 30 56 47 57 26 36 38 46 19 56 18 26 20 15 56 23 107 -49 39 2 23 56 18 4 38 30 9 56 18 47 43 25 48 56 9 11 33 32 13 56 21 28 40 33 43 55 9 38 20 16 10 24 108 -50 40 48 39 55 9 9 40 18 41 55 10 6 44 54 39 54 58 42 35 43 33 55 15 21 42 6 11 54 1 4 20 16 24 25 109 -52 42 20 11 54 0 30 41 52 7 54 1 37 46 11 28 53 48 50 37 35 46 54 8 48 43 26 19 52 52 53 20 16 39 26 110 -53 43 39 30 52 52 15 43 13 4 52 53 30 47 18 9 52 39 39 39 12 29 53 2 13 44 36 3 51 45 13 20 16 53 27 111 -54 44 48 33 51 44 32 44 23 30 51 45 54 48 16 16 51 31 12 40 36 21 51 55 47 45 36 59 50 38 8 20 17 8 28 111 -56 45 48 52 50 37 24 45 25 2 50 38 51 49 7 2 50 23 30 41 49 28 50 49 41 46 30 19 49 31 39 20 17 22 29 111 -57 46 41 41 49 30 53 46 18 54 49 32 24 49 51 25 49 16 32 42 53 27 49 43 59 47 17 6 48 25 48 20 17 37 30 111 -58 47 28 0 48 25 0 47 6 10 48 26 34 50 30 15 48 10 17 43 49 35 48 38 45 47 58 10 47 20 34 20 17 51 31 111 -59 48 8 39 47 19 45 47 47 38 47 21 22 51 4 13 47 4 45 44 38 54 47 34 2 48 34 11 46 15 57 20 18 6 32 111 -60 48 44 17 46 15 8 48 24 2 46 16 46 51 33 52 45 59 55 45 22 18 46 29 50 49 5 43 45 11 57 20 18 20 33 111 -61 49 15 30 45 11 7 48 55 55 45 12 47 51 59 40 44 55 44 46 0 27 45 26 10 49 33 17 44 8 32 20 18 35 33 111 -62 49 42 46 44 7 41 49 23 47 44 9 23 52 22 2 43 52 10 46 33 57 44 23 1 49 57 17 43 5 42 20 18 49 34 111 -63 50 6 29 43 4 50 49 48 3 43 6 33 52 41 18 42 49 14 47 3 20 43 20 23 50 18 3 42 3 24 20 19 3 35 110 -64 50 27 0 42 2 32 50 9 4 42 4 15 52 57 46 41 46 52 47 28 58 42 18 15 50 35 54 41 1 37 20 19 18 35 110 -65 50 44 37 41 0 45 50 27 8 41 2 29 53 11 40 40 45 2 47 51 16 41 16 36 50 51 5 40 0 21 20 19 32 36 110 -67 50 59 36 39 59 28 50 42 32 40 1 13 53 23 15 39 43 44 48 10 30 40 15 25 51 3 49 38 59 33 20 19 47 37 109 -68 51 12 9 38 58 40 50 55 28 39 0 25 53 32 41 38 42 56 48 26 58 39 14 42 51 14 19 37 59 12 20 20 1 37 109 -69 51 22 28 37 58 20 51 6 8 38 0 4 53 40 8 37 42 36 48 40 52 38 14 24 51 22 45 36 59 17 20 20 16 37 108 -70 51 30 44 36 58 25 51 14 44 37 0 9 53 45 45 36 42 42 48 52 25 37 14 31 51 29 15 35 59 47 20 20 30 38 108 -70 51 37 5 35 58 54 51 21 23 36 0 39 53 49 39 35 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55 40 100 -80 51 17 14 26 21 30 51 3 30 26 23 11 53 13 32 26 6 31 49 1 49 26 37 7 51 1 34 25 25 56 20 23 9 41 99 -81 51 8 22 25 25 6 50 54 45 25 26 46 53 3 39 25 10 12 48 54 9 25 40 37 50 51 39 24 29 41 20 23 24 41 98 -82 50 58 24 24 28 51 50 44 54 24 30 30 52 52 47 24 14 3 48 45 17 24 44 17 50 40 41 23 33 35 20 23 38 41 98 -83 50 47 23 23 32 46 50 33 58 23 34 24 52 40 55 23 18 3 48 35 15 23 48 5 50 28 39 22 37 37 20 23 52 41 97 -84 50 35 18 22 36 48 50 21 59 22 38 26 52 28 6 22 22 11 48 24 3 22 52 1 50 15 35 21 41 46 20 24 7 41 96 -85 50 22 12 21 40 57 50 8 58 21 42 34 52 14 20 21 26 27 48 11 44 21 56 3 50 1 30 20 46 0 20 24 21 41 95 -86 50 8 4 20 45 12 49 54 54 20 46 48 51 59 37 20 30 48 47 58 18 21 0 11 49 46 23 19 50 20 20 24 36 40 94 -86 49 52 56 19 49 32 49 39 49 19 51 7 51 43 57 19 35 15 47 43 44 20 4 23 49 30 14 18 54 43 20 24 50 40 93 -87 49 36 46 18 53 55 49 23 42 18 55 30 51 27 21 18 39 45 47 28 4 19 8 39 49 13 4 17 59 9 20 25 5 40 92 -88 49 19 35 17 58 22 49 6 33 17 59 56 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32 4 18 76 -57 29 8 31 -10 26 9 28 46 59 -10 26 21 32 0 52 -10 26 57 25 20 34 -10 31 45 27 10 52 -11 37 34 20 32 18 16 76 -55 27 22 40 -11 37 17 26 58 55 -11 37 52 30 29 34 -11 35 33 23 4 25 -11 48 9 25 5 40 -12 52 18 20 32 33 14 76 -53 25 19 7 -12 51 44 24 52 1 -12 52 55 28 46 43 -12 46 24 20 8 19 -13 11 43 22 31 37 -14 12 20 20 32 47 11 77 -51 22 47 55 -14 11 17 22 14 57 -14 13 28 26 48 7 -14 0 17 15 20 7 -14 54 52 18 59 57 -15 42 38 20 33 2 8 78 -47 19 23 5 -15 40 24 18 35 40 -15 45 5 24 26 6 -15 18 33 ... .. .. .. .. .. Uncertainty in time = +/- 19 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 0734-00741-1 * constellation : Orion * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 13 11.4177 DE: +09 37 28.008 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .033, .032 ) * V mag [mag]: 10.3 * B mag [mag]: 10.7 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4911) Rosenzweig approx. diameter [km]: 15 approx. diameter ["]: .013 distance from Earth [AU]: 1.63500 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: MPC (via Astdys) number of used observations: 641 number of rejected observations: 12 time covered by the observations: 1953 Oct 16 - 2007 Aug 07 1 sigma uncertainty ellipse (major, minor, PA): 0.111, 0.068, 95° remarks: * orbital elements for (4911) Rosenzweig : Mean anomaly = 50.88747517 deg Arg. of pericenter = 156.98438458 deg Long. of node = 209.97565342 deg Inclination = 13.02155860 deg Eccentricity = 0.17867370 Semimajor axis = 2.63781932 AU Perihelion dist = 2.16651038 AU Mag: H = 11.90, G = 0.15 Epoch of elements : MJD 55142.85000000 TDT (2009 Nov 07.850) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 7 4911 Rosenzweig 20h 23.6m UT 10.3 6 13 11.418 9 37 28.01TYC 0734-00741-1 10.8 16.4 15 2.0 1.635 -0.573 -20.22 100.2203 9.631 -129.98 -16.50 20.3939 -0.69932 0.29246 -1.57000 -3.75849 -0.00422 0.00100 2000 50.231811200911 5.00000156.984385209.975653 13.0215590.17867370 2.6378193 2.166510412.5 5.00.15 RATE 2.3005760 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.116 0.075 95 9.65 0.109 0 54581.5020091107_0741-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 09:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org