IOTA/IOTA-ES occultation update for (1334) Lundmarka / HIP 111477 event on 2009 Nov 06, 00:12 UT Visible from Summary ------- On 2009 Nov 06 UT, the 30 km diameter asteroid (1334) Lundmarka will occult a 8.9 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.6 mag to 16.5 mag (the magnitude of the asteroid) for at most 4.2 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: . The event at a glimpse ---------------------- * Rank: 42 * date and approx. time of event: 2009 Nov 06, 00:12 - 2009 Nov 06, 00:18 UT * magnitude of target star: 8.9 * magnitude drop [mag]: 7.6 * estimated maximum duration [s]: 4.2 * Moon: 87 % sunlit, 112° distance * Sun: 110° distance * rough path description: Additional comments ------------------- close double star The occultation path -------------------- * approximate projected width [km]: 75 * 1 sigma uncertainty interval [path widths]: +/- 1.56 * 1 sigma uncertainty interval [seconds]: +/- 10.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .045 +/- .023) * 1 sigma uncertainty ellipse (major, minor, PA): ( .045", .023", 83° ) * approx speed of asteroid's shadow [km/s]: 7.0326 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 111477 by 1334 Lundmarka on 2009 Nov 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 - 87 38 52 71 0 0 0 18 50 0 164 -19 - 86 35 50 ... .. .. ... .. .. ... .. .. - 86 52 58 70 0 0 0 18 50 1 165 -19 - 85 53 48 - 87 53 13 ... .. .. - 91 9 10 - 86 18 29 69 0 0 0 18 49 2 166 -19 - 85 22 36 - 87 15 19 ... .. .. - 90 19 31 - 85 53 35 68 0 0 0 18 47 3 166 -20 - 85 0 32 - 86 47 30 ... .. .. - 89 41 45 - 85 36 55 67 0 0 0 18 45 4 166 -20 - 84 46 18 - 86 28 17 ... .. .. - 89 14 1 - 85 27 21 66 0 0 0 18 42 5 166 -20 - 84 38 53 - 86 16 31 - 82 11 43 - 88 54 52 - 85 24 2 65 0 0 0 18 38 6 166 -20 - 84 37 27 - 86 11 16 - 82 15 51 - 88 43 10 - 85 26 14 64 0 0 0 18 33 7 166 -20 - 84 41 19 - 86 11 46 - 82 24 40 - 88 38 1 - 85 33 23 63 0 0 0 18 28 8 166 -20 - 84 49 56 - 86 17 24 - 82 37 41 - 88 38 41 - 85 45 1 62 0 0 0 18 22 9 166 -20 - 85 2 52 - 86 27 42 - 82 54 31 - 88 44 36 - 86 0 44 61 0 0 0 18 16 10 166 -20 - 85 19 45 - 86 42 14 - 83 14 53 - 88 55 17 - 86 20 14 60 0 0 0 18 9 11 165 -20 - 85 40 16 - 87 0 41 - 83 38 31 - 89 10 19 - 86 43 14 59 0 0 0 18 1 12 165 -20 - 86 4 11 - 87 22 46 - 84 5 11 - 89 29 25 - 87 9 33 58 0 0 0 17 52 13 164 -19 - 86 31 18 - 87 48 16 - 84 34 44 - 89 52 18 - 87 39 0 57 0 0 0 17 43 13 164 -19 - 87 1 27 - 88 17 1 - 85 7 1 - 90 18 47 - 88 11 28 56 0 0 0 17 33 14 163 -19 - 87 34 31 - 88 48 52 - 85 41 57 - 90 48 42 - 88 46 51 55 0 0 0 17 22 15 162 -18 - 88 10 25 - 89 23 44 - 86 19 27 - 91 21 55 - 89 25 5 54 0 0 0 17 11 16 162 -18 - 88 49 5 - 90 1 32 - 86 59 28 - 91 58 24 - 90 6 8 53 0 0 0 16 59 17 161 -18 - 89 30 29 - 90 42 15 - 87 41 58 - 92 38 4 - 90 50 1 52 0 0 0 16 46 18 160 -17 - 90 14 37 - 91 25 52 - 88 26 57 - 93 20 57 - 91 36 44 51 0 0 0 16 32 18 159 -16 - 91 1 31 - 92 12 25 - 89 14 27 - 94 7 2 - 92 26 20 50 0 0 0 16 17 19 158 -16 - 91 51 13 - 93 1 56 - 90 4 30 - 94 56 26 - 93 18 56 49 0 0 0 16 2 20 157 -15 - 92 43 48 - 93 54 33 - 90 57 11 - 95 49 14 - 94 14 38 48 0 0 0 15 46 20 156 -14 - 93 39 24 - 94 50 22 - 91 52 37 - 96 45 36 - 95 13 36 47 0 0 0 15 28 21 155 -13 - 94 38 11 - 95 49 35 - 92 50 54 - 97 45 44 - 96 16 4 46 0 0 0 15 10 22 153 -12 - 95 40 19 - 96 52 24 - 93 52 14 - 98 49 56 - 97 22 17 45 0 0 0 14 51 22 152 -11 - 96 46 5 - 97 59 7 - 94 56 50 - 99 58 32 - 98 32 37 44 0 0 0 14 31 23 151 -10 - 97 55 48 - 99 10 7 - 96 4 57 -101 12 3 - 99 47 30 43 0 0 0 14 10 23 149 -9 - 99 9 54 -100 25 52 - 97 16 56 -102 31 4 -101 7 31 42 0 0 0 13 47 23 148 -8 -100 28 53 -101 47 1 - 98 33 12 -103 56 25 -102 33 25 41 0 0 0 13 23 23 146 -7 -101 53 28 -103 14 21 - 99 54 19 -105 29 13 -104 6 12 40 0 0 0 12 58 24 144 -5 -103 24 33 -104 49 0 -101 20 58 -107 11 4 -105 47 16 39 0 0 0 12 31 23 142 -3 -105 3 24 -106 32 31 -102 54 5 -109 4 19 -107 38 37 38 0 0 0 12 2 23 140 -2 -106 51 46 -108 27 12 -104 34 56 -111 12 42 Uncertainty in time = +/- 11 secs [Prediction of 2008 Nov 16.0] Data for the target star ------------------------ * name: HIP 111477 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 22 35 09.6250 DE: -18 24 58.677 * position source: mpos:HIP2 pm:HIP2 plx:HIP2 * standard error: RA,DE ["]: ( .023, .014 ) * V mag [mag]: 8.9 * B mag [mag]: 9.4 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1334) Lundmarka approx. diameter [km]: 30 approx. diameter ["]: .017 distance from Earth [AU]: 2.39200 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 984 number of rejected observations: 54 time covered by the observations: 1934 Jul 16 - 2008 Mar 08 1 sigma uncertainty ellipse (major, minor, PA): 0.039, 0.018, 80° remarks: * orbital elements for (1334) Lundmarka : Mean anomaly = 77.45744174 deg Arg. of pericenter = 131.65375414 deg Long. of node = 133.27503823 deg Inclination = 11.45824590 deg Eccentricity = 0.09404281 Semimajor axis = 2.91605748 AU Perihelion dist = 2.64182323 AU Mag: H = 10.28, G = 0.15 Epoch of elements : MJD 55141.00900000 TDT (2009 Nov 06.009) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 6 1334 Lundmarka 0h 12.9m UT 8.9 22 35 9.625-18 24 58.68HIP 111477 9.4 16.5 30 4.2 2.392 0.901 7.01 -69.7764 -18.417 172.70 -15.96 0.2142 -0.44016 0.80266 3.48240 1.90502 0.00498 0.00235 2000 77.257731200911 5.00000131.653754133.275038 11.4582460.09404281 2.9160575 2.641823211.3 5.00.15 RATE 1.9792930 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.045 0.023 83 2.56 0.027 0 54786.5020091106_111477 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 16, 17:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org