IOTA/IOTA-ES occultation update for (626) Notburga / TYC 2966-00196-1 event on 2009 Sep 06, 19:57 UT Visible from Summary ------- On 2009 Sep 06 UT, the 101 km diameter asteroid (626) Notburga will occult a 10.1 mag star in the constellation Lynx for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.7 mag to 13.8 mag (the magnitude of the asteroid) for at most 2.9 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: 94 * date and approx. time of event: 2009 Sep 06, 19:54 - 2009 Sep 06, 19:56 UT * magnitude of target star: 10.1 * magnitude drop [mag]: 3.7 * estimated maximum duration [s]: 2.9 * Moon: 95 % sunlit, 96° distance * Sun: 58° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 125 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .033 +/- .026) * 1 sigma uncertainty ellipse (major, minor, PA): ( .033", .025", 109° ) * approx speed of asteroid's shadow [km/s]: 34.3095 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2966-00196-1 by 626 Notburga on 2009 Sep 6 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 ' " Longitude Longitude Longitude Longitude Latitude Latitude Latitude Latitude 128 0 0 73 23 13 19 56 29 49 102 0 72 35 50 74 11 16 71 52 48 74 56 6 127 0 0 73 5 40 19 56 27 49 101 -1 72 17 43 73 54 18 71 34 12 74 39 41 126 0 0 72 47 23 19 56 26 48 100 -1 71 58 53 73 36 37 71 14 52 74 22 34 125 0 0 72 28 22 19 56 25 48 98 -2 71 39 17 73 18 12 70 54 46 74 4 44 124 0 0 72 8 34 19 56 23 48 97 -2 71 18 54 72 59 0 70 33 51 73 46 8 123 0 0 71 47 57 19 56 22 48 95 -2 70 57 42 72 39 1 70 12 7 73 26 45 122 0 0 71 26 30 19 56 21 47 94 -3 70 35 38 72 18 11 69 49 32 73 6 32 121 0 0 71 4 9 19 56 19 47 93 -3 70 12 41 71 56 29 69 26 3 72 45 27 120 0 0 70 40 54 19 56 18 47 91 -4 69 48 49 71 33 53 69 1 38 72 23 28 119 0 0 70 16 42 19 56 16 46 90 -4 69 23 59 71 10 20 68 36 16 72 0 33 118 0 0 69 51 30 19 56 15 46 89 -5 68 58 11 70 45 48 68 9 55 71 36 39 117 0 0 69 25 17 19 56 13 46 87 -5 68 31 20 70 20 14 67 42 31 71 11 44 116 0 0 68 58 0 19 56 11 45 86 -6 68 3 26 69 53 37 67 14 4 70 45 45 115 0 0 68 29 38 19 56 10 45 84 -6 67 34 25 69 25 54 66 44 31 70 18 40 114 0 0 68 0 6 19 56 8 44 83 -7 67 4 17 68 57 2 66 13 50 69 50 27 113 0 0 67 29 25 19 56 6 44 82 -8 66 32 58 68 26 59 65 42 0 69 21 3 112 0 0 66 57 30 19 56 4 43 80 -8 66 0 28 67 55 43 65 8 57 68 50 24 111 0 0 66 24 20 19 56 2 43 79 -9 65 26 42 67 23 12 64 34 41 68 18 30 110 0 0 65 49 54 19 56 0 42 78 -10 64 51 40 66 49 22 63 59 9 67 45 17 109 0 0 65 14 8 19 55 58 42 76 -10 64 15 21 66 14 12 63 22 19 67 10 43 108 0 0 64 37 1 19 55 56 41 75 -11 63 37 41 65 37 40 62 44 11 66 34 45 107 0 0 63 58 31 19 55 54 41 74 -12 62 58 40 64 59 44 62 4 43 65 57 22 106 0 0 63 18 37 19 55 52 40 72 -13 62 18 15 64 20 22 61 23 53 65 18 32 105 0 0 62 37 17 19 55 50 39 71 -13 61 36 27 63 39 33 60 41 40 64 38 12 104 0 0 61 54 30 19 55 48 39 70 -14 60 53 14 62 57 14 59 58 4 63 56 22 103 0 0 61 10 16 19 55 46 38 68 -15 60 8 35 62 13 26 59 13 4 63 13 0 102 0 0 60 24 33 19 55 43 37 67 -16 59 22 31 61 28 8 58 26 41 62 28 5 101 0 0 59 37 22 19 55 41 37 66 -17 58 35 0 60 41 18 57 38 53 61 41 37 100 0 0 58 48 43 19 55 39 36 65 -18 57 46 4 59 52 58 56 49 41 60 53 35 99 0 0 57 58 37 19 55 37 35 63 -19 56 55 42 59 3 7 55 59 7 60 4 0 98 0 0 57 7 3 19 55 34 34 62 -20 56 3 57 58 11 46 55 7 12 59 12 52 97 0 0 56 14 4 19 55 32 33 61 -21 55 10 49 57 18 57 54 13 56 58 20 13 96 0 0 55 19 42 19 55 30 32 60 -22 54 16 20 56 24 41 53 19 22 57 26 4 95 0 0 54 23 58 19 55 27 31 59 -23 53 20 33 55 29 1 52 23 32 56 30 27 94 0 0 53 26 55 19 55 25 30 57 -24 52 23 30 54 31 59 51 26 30 55 33 25 93 0 0 52 28 37 19 55 23 29 56 -25 51 25 15 53 33 38 50 28 17 54 35 1 92 0 0 51 29 7 19 55 20 28 55 -27 50 25 51 52 34 1 49 28 58 53 35 18 91 0 0 50 28 29 19 55 18 27 54 -28 49 25 21 51 33 13 48 28 36 52 34 21 90 0 0 49 26 46 19 55 16 26 53 -29 48 23 51 50 31 19 47 27 15 51 32 14 89 0 0 48 24 5 19 55 14 25 52 -30 47 21 23 49 28 21 46 25 1 50 29 1 88 0 0 47 20 29 19 55 12 24 51 -31 46 18 4 48 24 27 45 21 56 49 24 49 87 0 0 46 16 3 19 55 10 22 51 -33 45 13 58 47 19 40 44 18 7 48 19 41 86 0 0 45 10 53 19 55 8 21 50 -34 44 9 11 46 14 7 43 13 39 47 13 44 85 0 0 44 5 5 19 55 6 20 49 -35 43 3 47 45 7 53 42 8 36 46 7 5 84 0 0 42 58 44 19 55 4 19 48 -37 41 57 52 44 1 4 41 3 4 44 59 48 83 0 0 41 51 56 19 55 2 17 47 -38 40 51 32 42 53 45 39 57 8 43 52 0 82 0 0 40 44 47 19 55 1 16 46 -39 39 44 53 41 46 4 38 50 54 42 43 47 81 0 0 39 37 21 19 54 59 15 46 -41 38 37 59 40 38 5 37 44 27 41 35 15 80 0 0 38 29 46 19 54 58 13 45 -42 37 30 56 39 29 55 36 37 53 40 26 30 79 0 0 37 22 6 19 54 57 12 44 -43 36 23 50 38 21 39 35 31 16 39 17 39 78 0 0 36 14 27 19 54 56 11 44 -45 35 16 46 37 13 23 34 24 42 38 8 47 77 0 0 35 6 55 19 54 55 9 43 -46 34 9 49 36 5 12 33 18 16 36 59 59 76 0 0 33 59 33 19 54 54 8 43 -47 33 3 4 34 57 13 32 12 3 35 51 22 75 0 0 32 52 28 19 54 53 6 42 -49 31 56 36 33 49 29 31 6 6 34 43 0 74 0 0 31 45 45 19 54 53 5 41 -50 30 50 29 32 42 6 30 0 32 33 34 59 73 0 0 30 39 26 19 54 52 4 41 -51 29 44 48 31 35 8 28 55 23 32 27 22 72 0 0 29 33 38 19 54 52 2 40 -53 28 39 36 30 28 40 .. .. .. 31 20 16 71 0 0 28 28 23 19 54 52 1 40 -54 27 34 59 29 22 45 .. .. .. 30 13 43 Uncertainty in time = +/- 2 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 2966-00196-1 * constellation : Lynx * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 37 13.5685 DE: +43 00 39.274 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .017, .016 ) * V mag [mag]: 10.1 * B mag [mag]: 10.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (626) Notburga approx. diameter [km]: 101 approx. diameter ["]: .056 distance from Earth [AU]: 2.50000 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 620 number of rejected observations: 49 time covered by the observations: 1907 Feb 11 - 2008 Mar 05 1 sigma uncertainty ellipse (major, minor, PA): 0.029, 0.019, 116° remarks: * orbital elements for (626) Notburga : Mean anomaly = 36.17259853 deg Arg. of pericenter = 43.57958433 deg Long. of node = 341.70543485 deg Inclination = 25.35513364 deg Eccentricity = 0.24151088 Semimajor axis = 2.57465867 AU Perihelion dist = 1.95285058 AU Mag: H = 9.10, G = 0.15 Epoch of elements : MJD 55080.83200000 TDT (2009 Sep 06.832) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Sep 6 626 Notburga 19h 57.4m UT 10.1 7 37 13.569 43 0 39.27TYC 2966-00196-1 10.5 13.8 101 2.9 2.500 6.199 -3.98 -171.0747 43.013 -119.79 6.16 19.9561 0.03448 0.58786 19.33227 -1.12904 -0.00409 0.00183 2000 35.9741052009 9 6.00000 43.579584341.705435 25.3551340.24151088 2.5746587 1.9528506 9.0 5.00.15 RATE 2.3857480 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.033 0.025 109 1.46 0.025 0 54581.5020090906_0196-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 08:23 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org