IOTA/IOTA-ES occultation update for (1379) Lomonosowa / TYC 0464-01583-1 event on 2009 Jul 04, 10:49 UT Visible from Summary ------- On 2009 Jul 04 UT, the 21 km diameter asteroid (1379) Lomonosowa will occult a 9.7 mag star in the constellation Aquila for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.9 mag to 14.6 mag (the magnitude of the asteroid) for at most 2.0 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: 37 * date and approx. time of event: 2009 Jul 04, 10:40 - 2009 Jul 04, 10:58 UT * magnitude of target star: 9.7 * magnitude drop [mag]: 4.9 * estimated maximum duration [s]: 2.0 * Moon: 92 % sunlit, 49° distance * Sun: 155° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 1.79 * 1 sigma uncertainty interval [seconds]: +/- 5.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .054 +/- .032) * 1 sigma uncertainty ellipse (major, minor, PA): ( .054", .032", 91° ) * approx speed of asteroid's shadow [km/s]: 10.3623 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0464-01583-1 by 1379 Lomonosowa on 2009 Jul 4 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 114 0 0 6 59 12 10 58 52 1 89 -4 7 5 22 6 53 3 7 27 29 .. .. .. 115 0 0 7 0 42 10 58 51 2 89 -5 7 6 52 6 54 33 7 28 59 .. .. .. 116 0 0 7 2 31 10 58 51 3 89 -6 7 8 41 6 56 21 7 30 47 6 34 20 117 0 0 7 4 37 10 58 50 4 89 -7 7 10 47 6 58 27 7 32 54 6 36 26 118 0 0 7 7 1 10 58 49 5 90 -8 7 13 11 7 0 51 7 35 18 6 38 49 119 0 0 7 9 42 10 58 48 6 90 -9 7 15 52 7 3 32 7 38 0 6 41 31 120 0 0 7 12 42 10 58 47 7 90 -10 7 18 52 7 6 32 7 40 59 6 44 30 121 0 0 7 15 58 10 58 45 8 90 -10 7 22 9 7 9 48 7 44 16 6 47 46 122 0 0 7 19 33 10 58 44 9 90 -11 7 25 43 7 13 23 7 47 51 6 51 20 123 0 0 7 23 24 10 58 42 10 90 -12 7 29 35 7 17 14 7 51 43 6 55 11 124 0 0 7 27 33 10 58 40 11 90 -13 7 33 44 7 21 23 7 55 52 6 59 20 125 0 0 7 31 59 10 58 37 12 91 -14 7 38 10 7 25 49 8 0 19 7 3 45 126 0 0 7 36 42 10 58 35 13 91 -15 7 42 53 7 30 32 8 5 2 7 8 28 127 0 0 7 41 42 10 58 32 14 91 -16 7 47 53 7 35 32 8 10 3 7 13 27 128 0 0 7 46 59 10 58 30 15 91 -16 7 53 10 7 40 48 8 15 20 7 18 44 129 0 0 7 52 33 10 58 27 16 91 -17 7 58 44 7 46 22 8 20 54 7 24 17 130 0 0 7 58 23 10 58 23 17 91 -18 8 4 34 7 52 12 8 26 45 7 30 6 131 0 0 8 4 29 10 58 20 18 92 -19 8 10 41 7 58 18 8 32 52 7 36 12 132 0 0 8 10 52 10 58 16 19 92 -20 8 17 3 8 4 41 8 39 16 7 42 34 133 0 0 8 17 31 10 58 13 20 92 -21 8 23 42 8 11 19 8 45 55 7 49 12 134 0 0 8 24 26 10 58 9 21 92 -21 8 30 38 8 18 14 8 52 51 7 56 6 135 0 0 8 31 36 10 58 5 22 92 -22 8 37 49 8 25 25 9 0 3 8 3 16 136 0 0 8 39 3 10 58 0 23 92 -23 8 45 15 8 32 51 9 7 30 8 10 42 137 0 0 8 46 45 10 57 56 23 93 -24 8 52 57 8 40 33 9 15 13 8 18 23 138 0 0 8 54 42 10 57 51 24 93 -24 9 0 55 8 48 30 9 23 11 8 26 19 139 0 0 9 2 55 10 57 47 25 93 -25 9 9 8 8 56 42 9 31 25 8 34 31 140 0 0 9 11 23 10 57 42 26 93 -26 9 17 36 9 5 10 9 39 53 8 42 58 141 0 0 9 20 5 10 57 37 27 94 -27 9 26 18 9 13 52 9 48 37 8 51 39 142 0 0 9 29 2 10 57 31 28 94 -27 9 35 16 9 22 49 9 57 35 9 0 36 143 0 0 9 38 14 10 57 26 29 94 -28 9 44 28 9 32 1 10 6 48 9 9 46 144 0 0 9 47 40 10 57 20 30 95 -29 9 53 54 9 41 27 10 16 15 9 19 12 145 0 0 9 57 21 10 57 14 31 95 -30 10 3 35 9 51 7 10 25 56 9 28 51 146 0 0 10 7 15 10 57 8 32 95 -30 10 13 29 10 1 1 10 35 52 9 38 44 147 0 0 10 17 23 10 57 2 33 95 -31 10 23 37 10 11 9 10 46 1 9 48 51 148 0 0 10 27 44 10 56 56 34 96 -32 10 33 59 10 21 30 10 56 23 9 59 11 149 0 0 10 38 19 10 56 50 35 96 -32 10 44 34 10 32 5 11 6 59 10 9 45 150 0 0 10 49 7 10 56 43 36 97 -33 10 55 23 10 42 52 11 17 49 10 20 32 151 0 0 11 0 8 10 56 37 37 97 -34 11 6 24 10 53 53 11 28 51 10 31 32 152 0 0 11 11 22 10 56 30 38 97 -34 11 17 38 11 5 7 11 40 6 10 42 45 153 0 0 11 22 48 10 56 23 39 98 -35 11 29 4 11 16 33 11 51 33 10 54 10 154 0 0 11 34 27 10 56 16 39 98 -36 11 40 43 11 28 11 12 3 12 11 5 47 155 0 0 11 46 17 10 56 8 40 99 -36 11 52 34 11 40 1 12 15 4 11 17 36 156 0 0 11 58 20 10 56 1 41 99 -37 12 4 36 11 52 3 12 27 8 11 29 37 157 0 0 12 10 33 10 55 54 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53 57 54 110 -44 15 26 3 15 13 22 15 48 47 14 50 43 172 0 0 15 34 19 10 53 48 55 111 -44 15 40 40 15 27 58 16 3 25 15 5 19 173 0 0 15 49 3 10 53 38 56 112 -44 15 55 24 15 42 42 16 18 10 15 20 2 174 0 0 16 3 54 10 53 29 56 113 -45 16 10 15 15 57 33 16 33 2 15 34 52 175 0 0 16 18 52 10 53 20 57 115 -45 16 25 13 16 12 31 16 48 1 15 49 48 176 0 0 16 33 56 10 53 11 58 116 -45 16 40 18 16 27 35 17 3 7 16 4 52 177 0 0 16 49 6 10 53 1 59 117 -45 16 55 28 16 42 45 17 18 18 16 20 1 178 0 0 17 4 23 10 52 52 59 119 -46 17 10 45 16 58 1 17 33 35 16 35 16 179 0 0 17 19 44 10 52 42 60 120 -46 17 26 7 17 13 22 17 48 58 16 50 37 180 0 0 17 35 11 10 52 33 61 121 -46 17 41 34 17 28 49 18 4 26 17 6 3 -179 0 0 17 50 43 10 52 23 61 123 -46 17 57 6 17 44 21 18 19 59 17 21 35 -178 0 0 18 6 20 10 52 13 62 125 -46 18 12 43 17 59 58 18 35 36 17 37 10 -177 0 0 18 22 1 10 52 3 62 126 -46 18 28 24 18 15 38 18 51 18 17 52 50 -176 0 0 18 37 46 10 51 54 63 128 -46 18 44 9 18 31 23 19 7 4 18 8 35 -175 0 0 18 53 35 10 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22 38 31 10 49 25 68 163 -45 22 44 56 22 32 7 23 7 57 22 9 12 -160 0 0 22 54 38 10 49 15 68 165 -44 23 1 3 22 48 13 23 24 4 22 25 19 -159 0 0 23 10 44 10 49 5 67 168 -44 23 17 9 23 4 19 23 40 10 22 41 24 -158 0 0 23 26 48 10 48 55 67 170 -44 23 33 13 23 20 23 23 56 14 22 57 28 -157 0 0 23 42 50 10 48 45 67 173 -43 23 49 15 23 36 26 24 12 16 23 13 31 -156 0 0 23 58 50 10 48 35 67 176 -43 24 5 15 23 52 26 24 28 17 23 29 31 -155 0 0 24 14 48 10 48 26 67 178 -43 24 21 13 24 8 23 24 44 14 23 45 28 -154 0 0 24 30 43 10 48 16 67 180 -42 24 37 8 24 24 18 25 0 9 24 1 23 -153 0 0 24 46 35 10 48 6 66 183 -42 24 53 0 24 40 10 25 16 1 24 17 16 -152 0 0 25 2 24 10 47 56 66 185 -41 25 8 49 24 55 59 25 31 50 24 33 4 -151 0 0 25 18 9 10 47 47 66 187 -41 25 24 34 25 11 44 25 47 34 24 48 49 -150 0 0 25 33 50 10 47 37 65 190 -41 25 40 15 25 27 25 26 3 15 25 4 31 -149 0 0 25 49 27 10 47 28 65 192 -40 25 55 52 25 43 2 26 18 52 25 20 8 -148 0 0 26 4 59 10 47 18 64 194 -40 26 11 24 25 58 35 26 34 24 25 35 41 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29 3 13 -133 0 0 29 46 19 10 45 4 55 218 -31 29 52 42 29 39 57 30 15 35 29 17 10 -132 0 0 30 0 6 10 44 56 55 219 -31 30 6 29 29 53 44 30 29 22 29 30 58 -131 0 0 30 13 45 10 44 48 54 220 -30 30 20 8 30 7 23 30 42 59 29 44 37 -130 0 0 30 27 15 10 44 40 53 221 -30 30 33 37 30 20 53 30 56 28 29 58 8 -129 0 0 30 40 36 10 44 32 53 223 -29 30 46 58 30 34 14 31 9 48 30 11 30 -128 0 0 30 53 48 10 44 24 52 224 -28 31 0 10 30 47 26 31 22 59 30 24 43 -127 0 0 31 6 50 10 44 16 51 225 -28 31 13 12 31 0 29 31 36 1 30 37 46 -126 0 0 31 19 43 10 44 8 50 226 -27 31 26 5 31 13 22 31 48 53 30 50 40 -125 0 0 31 32 27 10 44 1 50 227 -26 31 38 48 31 26 6 32 1 35 31 3 25 -124 0 0 31 45 0 10 43 53 49 228 -26 31 51 21 31 38 40 32 14 8 31 15 59 -123 0 0 31 57 24 10 43 46 48 229 -25 32 3 45 31 51 4 32 26 30 31 28 24 -122 0 0 32 9 37 10 43 39 47 230 -24 32 15 58 32 3 17 32 38 42 31 40 39 -121 0 0 32 21 40 10 43 32 47 231 -24 32 28 1 32 15 20 32 50 44 31 52 43 -120 0 0 32 33 33 10 43 24 46 231 -23 32 39 53 32 27 13 33 2 36 32 4 36 -119 0 0 32 45 15 10 43 17 45 232 -22 32 51 34 32 38 55 33 14 16 32 16 20 -118 0 0 32 56 46 10 43 11 44 233 -22 33 3 5 32 50 27 33 25 46 32 27 52 -117 0 0 33 8 6 10 43 4 44 234 -21 33 14 25 33 1 47 33 37 5 32 39 13 -116 0 0 33 19 15 10 42 57 43 235 -20 33 25 34 33 12 57 33 48 13 32 50 24 -115 0 0 33 30 13 10 42 51 42 236 -20 33 36 32 33 23 55 33 59 10 33 1 23 -114 0 0 33 41 0 10 42 44 41 236 -19 33 47 18 33 34 42 34 9 55 33 12 10 -113 0 0 33 51 35 10 42 38 40 237 -18 33 57 53 33 45 17 34 20 29 33 22 47 -112 0 0 34 1 58 10 42 32 40 238 -17 34 8 16 33 55 41 34 30 51 33 33 12 -111 0 0 34 12 10 10 42 26 39 239 -17 34 18 28 34 5 53 34 41 2 33 43 25 -110 0 0 34 22 10 10 42 20 38 240 -16 34 28 27 34 15 53 34 51 1 33 53 26 -109 0 0 34 31 58 10 42 14 37 240 -15 34 38 15 34 25 42 35 0 47 34 3 15 -108 0 0 34 41 34 10 42 8 37 241 -15 34 47 51 34 35 18 35 10 22 34 12 53 -107 0 0 34 50 58 10 42 3 36 242 -14 34 57 15 34 44 42 35 19 45 34 22 18 -106 0 0 35 0 10 10 41 57 35 243 -13 35 6 26 34 53 54 35 28 55 34 31 31 -105 0 0 35 9 9 10 41 52 34 243 -13 35 15 25 35 2 54 35 37 54 34 40 31 -104 0 0 35 17 56 10 41 46 33 244 -12 35 24 12 35 11 41 35 46 39 34 49 19 -103 0 0 35 26 31 10 41 41 33 245 -11 35 32 46 35 20 16 35 55 12 34 57 55 -102 0 0 35 34 53 10 41 36 32 245 -10 35 41 8 35 28 38 36 3 33 35 6 18 -101 0 0 35 43 2 10 41 31 31 246 -10 35 49 17 35 36 47 36 11 41 35 14 29 -100 0 0 35 50 58 10 41 27 30 247 -9 35 57 13 35 44 44 36 19 36 35 22 26 - 99 0 0 35 58 42 10 41 22 30 247 -8 36 4 56 35 52 28 36 27 19 35 30 11 - 98 0 0 36 6 12 10 41 17 29 248 -8 36 12 27 35 59 59 36 34 48 35 37 43 - 97 0 0 36 13 30 10 41 13 28 249 -7 36 19 44 36 7 17 36 42 5 35 45 2 - 96 0 0 36 20 35 10 41 9 27 249 -6 36 26 48 36 14 21 36 49 8 35 52 7 - 95 0 0 36 27 26 10 41 4 26 250 -5 36 33 40 36 21 13 36 55 59 35 59 0 - 94 0 0 36 34 5 10 41 0 26 251 -5 36 40 18 36 27 52 37 2 36 36 5 39 - 93 0 0 36 40 30 10 40 56 25 251 -4 36 46 43 36 34 17 37 9 0 36 12 6 - 92 0 0 36 46 42 10 40 53 24 252 -3 36 52 54 36 40 29 37 15 11 36 18 18 - 91 0 0 36 52 40 10 40 49 23 253 -3 36 58 52 36 46 28 37 21 8 36 24 18 - 90 0 0 36 58 25 10 40 45 22 253 -2 37 4 37 36 52 13 37 26 52 36 30 4 - 89 0 0 37 3 57 10 40 42 22 254 -1 37 10 9 36 57 45 37 32 23 36 35 36 - 88 0 0 37 9 15 10 40 38 21 255 0 37 15 26 37 3 3 37 37 40 36 40 55 Uncertainty in time = +/- 6 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 0464-01583-1 * constellation : Aquila * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 19 21 20.1211 DE: +00 59 26.427 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .023, .022 ) * V mag [mag]: 9.7 * B mag [mag]: 11.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1379) Lomonosowa approx. diameter [km]: 21 approx. diameter ["]: .019 distance from Earth [AU]: 1.53000 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 705 number of rejected observations: 52 time covered by the observations: 1905 Oct 26 - 2008 Mar 15 1 sigma uncertainty ellipse (major, minor, PA): 0.049, 0.023, 91° remarks: * orbital elements for (1379) Lomonosowa : Mean anomaly = 75.93467007 deg Arg. of pericenter = 31.22422550 deg Long. of node = 169.92627525 deg Inclination = 15.59562070 deg Eccentricity = 0.08913631 Semimajor axis = 2.52544567 AU Perihelion dist = 2.30033677 AU Mag: H = 10.73, G = 0.15 Epoch of elements : MJD 55016.45100000 TDT (2009 Jul 04.451) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jul 4 1379 Lomonosowa 10h 49.4m UT 9.7 19 21 20.121 0 59 26.43TYC 0464-01583-1 11.3 14.6 21 2.0 1.530 -2.160 -8.98 -154.5930 0.994 18.77 22.84 10.8229 -0.10147 0.36734 -5.63666 -1.56081 -0.00057 -0.00218 2000 74.3504192009 628.00000 31.224226169.926275 15.5956210.08913631 2.5254457 2.300336811.1 5.00.15 RATE 2.4558230 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.054 0.032 91 2.79 0.034 0 54581.5020090704_1583-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 07:24 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org