IOTA/IOTA-ES occultation update for (1129) Neujmina / TYC 1884-00712-1 event on 2009 Oct 08, 03:33 UT Visible from Summary ------- On 2009 Oct 08 UT, the 35 km diameter asteroid (1129) Neujmina will occult a 9.8 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.7 mag to 15.5 mag (the magnitude of the asteroid) for at most 2.7 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: 53 * date and approx. time of event: 2009 Oct 08, 03:25 - 2009 Oct 08, 03:33 UT * magnitude of target star: 9.8 * magnitude drop [mag]: 5.7 * estimated maximum duration [s]: 2.7 * Moon: 83 % sunlit, 35° distance * Sun: 97° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 37 * 1 sigma uncertainty interval [path widths]: +/- 1.20 * 1 sigma uncertainty interval [seconds]: +/- 4.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .035 +/- .023) * 1 sigma uncertainty ellipse (major, minor, PA): ( .036", .023", 100° ) * approx speed of asteroid's shadow [km/s]: 12.8535 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1884-00712-1 by 1129 Neujmina on 2009 Oct 8 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 - 73 0 0 28 43 24 3 25 36 1 61 -61 28 31 51 28 54 57 28 4 13 29 22 46 - 72 0 0 29 12 24 3 25 36 2 62 -61 29 0 53 29 23 57 28 33 16 29 51 44 - 71 0 0 29 41 9 3 25 37 3 62 -62 29 29 38 29 52 40 29 2 3 30 20 25 - 70 0 0 30 9 36 3 25 37 4 63 -62 29 58 6 30 21 6 29 30 33 30 48 49 - 69 0 0 30 37 45 3 25 38 5 63 -62 30 26 16 30 49 15 29 58 46 31 16 54 - 68 0 0 31 5 36 3 25 39 6 64 -62 30 54 8 31 17 5 30 26 41 31 44 42 - 67 0 0 31 33 8 3 25 40 7 65 -62 31 21 41 31 44 35 30 54 16 32 12 10 - 66 0 0 32 0 20 3 25 41 8 65 -62 31 48 55 32 11 47 31 21 33 32 39 19 - 65 0 0 32 27 13 3 25 42 9 66 -62 32 15 48 32 38 38 31 48 29 33 6 7 - 64 0 0 32 53 45 3 25 43 10 66 -62 32 42 22 33 5 9 32 15 6 33 32 35 - 63 0 0 33 19 56 3 25 45 11 67 -62 33 8 34 33 31 19 32 41 22 33 58 42 - 62 0 0 33 45 46 3 25 47 12 67 -61 33 34 26 33 57 8 33 7 16 34 24 27 - 61 0 0 34 11 14 3 25 48 12 68 -61 33 59 55 34 22 34 33 32 49 34 49 50 - 60 0 0 34 36 20 3 25 50 13 68 -61 34 25 3 34 47 39 33 58 0 35 14 51 - 59 0 0 35 1 4 3 25 52 14 69 -61 34 49 48 35 12 21 34 22 48 35 39 30 - 58 0 0 35 25 25 3 25 55 15 70 -60 35 14 10 35 36 41 34 47 14 36 3 46 - 57 0 0 35 49 23 3 25 57 16 70 -60 35 38 9 36 0 37 35 11 17 36 27 38 - 56 0 0 36 12 57 3 25 59 17 71 -60 36 1 45 36 24 9 35 34 57 36 51 7 - 55 0 0 36 36 8 3 26 2 18 71 -59 36 24 58 36 47 19 35 58 13 37 14 12 - 54 0 0 36 58 55 3 26 4 19 72 -59 36 47 46 37 10 4 36 21 5 37 36 54 - 53 0 0 37 21 17 3 26 7 20 73 -59 37 10 11 37 32 25 36 43 34 37 59 11 - 52 0 0 37 43 16 3 26 10 21 73 -58 37 32 11 37 54 22 37 5 38 38 21 4 - 51 0 0 38 4 50 3 26 13 21 74 -58 37 53 47 38 15 54 37 27 18 38 42 32 - 50 0 0 38 26 0 3 26 16 22 75 -57 38 14 58 38 37 2 37 48 33 39 3 36 - 49 0 0 38 46 45 3 26 19 23 75 -57 38 35 45 38 57 46 38 9 24 39 24 15 - 48 0 0 39 7 5 3 26 22 24 76 -56 38 56 7 39 18 4 38 29 50 39 44 29 - 47 0 0 39 27 0 3 26 25 25 77 -56 39 16 4 39 37 58 38 49 51 40 4 19 - 46 0 0 39 46 31 3 26 29 26 78 -55 39 35 36 39 57 26 39 9 27 40 23 43 - 45 0 0 40 5 36 3 26 32 26 78 -55 39 54 43 40 16 30 39 28 39 40 42 43 - 44 0 0 40 24 17 3 26 35 27 79 -54 40 13 25 40 35 9 39 47 25 41 1 18 - 43 0 0 40 42 32 3 26 39 28 80 -54 40 31 42 40 53 23 40 5 46 41 19 27 - 42 0 0 41 0 23 3 26 43 29 80 -53 40 49 35 41 11 11 40 23 42 41 37 12 - 41 0 0 41 17 48 3 26 46 30 81 -53 41 7 2 41 28 35 40 41 13 41 54 31 - 40 0 0 41 34 48 3 26 50 31 82 -52 41 24 4 41 45 34 40 58 20 42 11 26 - 39 0 0 41 51 24 3 26 54 31 83 -51 41 40 41 42 2 7 41 15 1 42 27 55 - 38 0 0 42 7 34 3 26 58 32 84 -51 41 56 53 42 18 16 41 31 17 42 44 0 - 37 0 0 42 23 20 3 27 2 33 84 -50 42 12 40 42 34 0 41 47 8 42 59 40 - 36 0 0 42 38 40 3 27 6 34 85 -50 42 28 2 42 49 19 42 2 34 43 14 55 - 35 0 0 42 53 36 3 27 10 34 86 -49 42 43 0 43 4 14 42 17 36 43 29 46 - 34 0 0 43 8 8 3 27 14 35 87 -49 42 57 33 43 18 43 42 32 12 43 44 11 - 33 0 0 43 22 14 3 27 18 36 88 -48 43 11 41 43 32 48 42 46 24 43 58 13 - 32 0 0 43 35 56 3 27 22 37 88 -47 43 25 25 43 46 29 43 0 11 44 11 49 - 31 0 0 43 49 14 3 27 27 37 89 -47 43 38 44 43 59 45 43 13 34 44 25 2 - 30 0 0 44 2 7 3 27 31 38 90 -46 43 51 39 44 12 37 43 26 32 44 37 50 - 29 0 0 44 14 36 3 27 35 39 91 -45 44 4 9 44 25 4 43 39 6 44 50 14 - 28 0 0 44 26 41 3 27 40 40 92 -45 44 16 15 44 37 7 43 51 16 45 2 14 - 27 0 0 44 38 22 3 27 44 40 93 -44 44 27 57 44 48 47 44 3 1 45 13 50 - 26 0 0 44 49 38 3 27 49 41 94 -44 44 39 15 45 0 2 44 14 23 45 25 2 - 25 0 0 45 0 31 3 27 53 42 95 -43 44 50 10 45 10 54 44 25 20 45 35 50 - 24 0 0 45 11 0 3 27 58 42 96 -42 45 0 40 45 21 21 44 35 54 45 46 15 - 23 0 0 45 21 6 3 28 2 43 97 -42 45 10 47 45 31 26 44 46 3 45 56 16 - 22 0 0 45 30 48 3 28 7 44 98 -41 45 20 30 45 41 6 44 55 49 46 5 54 - 21 0 0 45 40 6 3 28 12 44 99 -41 45 29 49 45 50 23 45 5 12 46 15 8 - 20 0 0 45 49 1 3 28 16 45 100 -40 45 38 45 45 59 17 45 14 11 46 23 59 - 19 0 0 45 57 33 3 28 21 46 101 -39 45 47 18 46 7 48 45 22 46 46 32 27 - 18 0 0 46 5 41 3 28 26 47 102 -39 45 55 28 46 15 56 45 30 58 46 40 32 - 17 0 0 46 13 27 3 28 31 47 103 -38 46 3 15 46 23 40 45 38 47 46 48 14 - 16 0 0 46 20 50 3 28 36 48 104 -37 46 10 38 46 31 2 45 46 13 46 55 33 - 15 0 0 46 27 49 3 28 41 48 105 -37 46 17 39 46 38 1 45 53 16 47 2 30 - 14 0 0 46 34 26 3 28 46 49 106 -36 46 24 17 46 44 37 45 59 56 47 9 4 - 13 0 0 46 40 40 3 28 51 50 107 -35 46 30 32 46 50 50 46 6 13 47 15 15 - 12 0 0 46 46 32 3 28 56 50 108 -35 46 36 24 46 56 41 46 12 7 47 21 4 - 11 0 0 46 52 1 3 29 1 51 109 -34 46 41 54 47 2 9 46 17 39 47 26 30 - 10 0 0 46 57 8 3 29 6 52 110 -34 46 47 1 47 7 15 46 22 48 47 31 35 - 9 0 0 47 1 52 3 29 11 52 111 -33 46 51 46 47 11 58 46 27 34 47 36 16 - 8 0 0 47 6 13 3 29 16 53 112 -32 46 56 8 47 16 19 46 31 58 47 40 36 - 7 0 0 47 10 13 3 29 21 54 114 -32 47 0 8 47 20 18 46 35 59 47 44 34 - 6 0 0 47 13 50 3 29 26 54 115 -31 47 3 46 47 23 55 46 39 38 47 48 9 - 5 0 0 47 17 5 3 29 31 55 116 -30 47 7 1 47 27 9 46 42 55 47 51 23 - 4 0 0 47 19 58 3 29 37 55 117 -30 47 9 55 47 30 2 46 45 49 47 54 14 - 3 0 0 47 22 29 3 29 42 56 119 -29 47 12 26 47 32 32 46 48 21 47 56 44 - 2 0 0 47 24 37 3 29 47 56 120 -28 47 14 35 47 34 41 46 50 31 47 58 51 - 1 0 0 47 26 24 3 29 53 57 121 -28 47 16 21 47 36 27 46 52 18 48 0 37 0 0 0 47 27 48 3 29 58 58 123 -27 47 17 46 47 37 51 46 53 43 48 2 1 1 0 0 47 28 51 3 30 3 58 124 -27 47 18 49 47 38 54 46 54 46 48 3 3 2 0 0 47 29 31 3 30 9 59 125 -26 47 19 29 47 39 34 46 55 27 48 3 43 3 0 0 47 29 50 3 30 14 59 127 -25 47 19 48 47 39 52 46 55 46 48 4 1 4 0 0 47 29 46 3 30 20 60 128 -25 47 19 44 47 39 49 46 55 42 48 3 57 5 0 0 47 29 21 3 30 25 60 130 -24 47 19 19 47 39 23 46 55 17 48 3 32 6 0 0 47 28 33 3 30 31 61 131 -23 47 18 31 47 38 36 46 54 29 48 2 44 7 0 0 47 27 23 3 30 36 61 133 -23 47 17 21 47 37 26 46 53 18 48 1 35 8 0 0 47 25 51 3 30 42 62 135 -22 47 15 49 47 35 54 46 51 46 48 0 4 9 0 0 47 23 57 3 30 48 62 136 -21 47 13 55 47 34 1 46 49 51 47 58 11 10 0 0 47 21 41 3 30 53 63 138 -21 47 11 38 47 31 45 46 47 34 47 55 56 11 0 0 47 19 3 3 30 59 63 140 -20 47 9 0 47 29 7 46 44 54 47 53 19 12 0 0 47 16 2 3 31 5 64 142 -19 47 5 59 47 26 7 46 41 53 47 50 19 13 0 0 47 12 39 3 31 11 64 143 -19 47 2 35 47 22 44 46 38 28 47 46 58 14 0 0 47 8 54 3 31 17 65 145 -18 46 58 50 47 18 59 46 34 41 47 43 14 15 0 0 47 4 46 3 31 22 65 147 -17 46 54 41 47 14 52 46 30 31 47 39 8 16 0 0 47 0 16 3 31 28 66 149 -17 46 50 10 47 10 22 46 25 59 47 34 40 17 0 0 46 55 23 3 31 34 66 151 -16 46 45 17 47 5 30 46 21 4 47 29 49 18 0 0 46 50 8 3 31 40 67 153 -15 46 40 1 47 0 15 46 15 46 47 24 36 19 0 0 46 44 29 3 31 46 67 155 -15 46 34 21 46 54 38 46 10 5 47 19 0 20 0 0 46 38 28 3 31 52 67 158 -14 46 28 19 46 48 37 46 4 1 47 13 2 21 0 0 46 32 4 3 31 58 68 160 -13 46 21 54 46 42 14 45 57 34 47 6 41 22 0 0 46 25 17 3 32 4 68 162 -12 46 15 6 46 35 27 45 50 44 46 59 56 23 0 0 46 18 6 3 32 11 68 165 -12 46 7 55 46 28 18 45 43 31 46 52 49 24 0 0 46 10 32 3 32 17 69 167 -11 46 0 20 46 20 45 45 35 53 46 45 19 25 0 0 46 2 35 3 32 23 69 170 -10 45 52 22 46 12 49 45 27 53 46 37 25 26 0 0 45 54 15 3 32 29 69 172 -10 45 44 0 46 4 29 45 19 29 46 29 8 27 0 0 45 45 30 3 32 36 69 175 -9 45 35 15 45 55 46 45 10 41 46 20 28 28 0 0 45 36 22 3 32 42 70 177 -8 45 26 6 45 46 39 45 1 29 46 11 23 29 0 0 45 26 50 3 32 48 70 180 -7 45 16 33 45 37 9 44 51 53 46 1 56 30 0 0 45 16 54 3 32 55 70 183 -7 45 6 35 45 27 14 44 41 52 45 52 4 31 0 0 45 6 34 3 33 1 70 186 -6 44 56 14 45 16 55 44 31 28 45 41 48 32 0 0 44 55 50 3 33 8 70 188 -5 44 45 28 45 6 12 44 20 39 45 31 8 33 0 0 44 44 41 3 33 14 70 191 -5 44 34 18 44 55 5 44 9 26 45 20 4 34 0 0 44 33 8 3 33 21 70 194 -4 44 22 43 44 43 33 43 57 48 45 8 36 35 0 0 44 21 10 3 33 27 70 197 -3 44 10 44 44 31 36 43 45 45 44 56 43 36 0 0 44 8 47 3 33 34 70 200 -2 43 58 20 44 19 15 43 33 17 44 44 25 37 0 0 43 55 59 3 33 41 70 203 -2 43 45 30 44 6 29 43 20 24 44 31 42 38 0 0 43 42 46 3 33 47 70 205 -1 43 32 16 43 53 17 43 7 6 44 18 35 39 0 0 43 29 8 3 33 54 70 208 0 43 18 37 43 39 41 42 53 23 44 5 2 Uncertainty in time = +/- 5 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 1884-00712-1 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 35 44.6955 DE: +25 14 05.059 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .016, .016 ) * V mag [mag]: 9.8 * B mag [mag]: 9.9 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1129) Neujmina approx. diameter [km]: 35 approx. diameter ["]: .019 distance from Earth [AU]: 2.51300 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 680 number of rejected observations: 54 time covered by the observations: 1929 Sep 03 - 2007 Jul 20 1 sigma uncertainty ellipse (major, minor, PA): 0.032, 0.016, 103° remarks: * orbital elements for (1129) Neujmina : Mean anomaly = 26.25439271 deg Arg. of pericenter = 137.03541189 deg Long. of node = 269.56866959 deg Inclination = 8.61599749 deg Eccentricity = 0.07946942 Semimajor axis = 3.02269201 AU Perihelion dist = 2.78248041 AU Mag: H = 10.13, G = 0.15 Epoch of elements : MJD 55112.14800000 TDT (2009 Oct 08.148) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Oct 8 1129 Neujmina 3h 33.4m UT 9.8 6 35 44.695 25 14 5.06TYC 1884-00712-1 9.9 15.5 35 2.7 2.513 1.830 -5.23 28.6798 25.237 123.56 -5.91 3.5566 0.07026 0.32715 7.09931 -1.49431 -0.00569 0.00033 2000 25.851539200910 6.00000137.035412269.568670 8.6159970.07946942 3.0226920 2.782480410.2 5.00.15 RATE 1.8754840 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.036 0.023 100 2.20 0.023 0 54581.5020091008_0712-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 08:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org