IOTA/IOTA-ES occultation update for (559) Nanon / TYC 6392-00465-1 event on 2009 Oct 01, 05:18 UT Visible from Summary ------- On 2009 Oct 01 UT, the 80 km diameter asteroid (559) Nanon will occult a 10.9 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 2.8 mag to 13.6 mag (the magnitude of the asteroid) for at most 11.4 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: 92 * date and approx. time of event: 2009 Oct 01, 05:09 - 2009 Oct 01, 05:27 UT * magnitude of target star: 10.9 * magnitude drop [mag]: 2.8 * estimated maximum duration [s]: 11.4 * Moon: 91 % sunlit, 15° distance * Sun: 145° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 126 * 1 sigma uncertainty interval [path widths]: +/- 0.49 * 1 sigma uncertainty interval [seconds]: +/- 5.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .033 +/- .029) * 1 sigma uncertainty ellipse (major, minor, PA): ( .033", .029", 83° ) * approx speed of asteroid's shadow [km/s]: 7.0134 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6392-00465-1 by 559 Nanon on 2009 Oct 1 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 - 55 43 24 58 0 0 5 9 8 1 227 -32 - 57 22 7 - 54 4 51 - 58 59 5 ... .. .. - 57 48 48 57 0 0 5 9 10 3 225 -34 - 59 25 13 - 56 12 38 - 61 0 2 ... .. .. Latitude Latitude Latitude Latitude - 59 0 0 56 25 22 5 9 11 4 224 -34 57 12 23 55 39 22 57 59 33 54 55 14 - 60 0 0 55 55 53 5 9 12 5 223 -35 56 42 50 55 9 58 57 29 55 54 25 53 - 61 0 0 55 26 10 5 9 14 5 222 -36 56 13 1 54 40 19 57 0 1 53 56 19 - 62 0 0 54 56 12 5 9 16 6 221 -36 55 42 58 54 10 27 56 29 51 53 26 33 - 63 0 0 54 26 2 5 9 18 7 221 -37 55 12 41 53 40 23 55 59 28 52 56 34 - 64 0 0 53 55 40 5 9 20 8 220 -38 54 42 12 53 10 8 55 28 51 52 26 26 - 65 0 0 53 25 8 5 9 23 8 219 -38 54 11 32 52 39 44 54 58 3 51 56 8 - 66 0 0 52 54 27 5 9 26 9 218 -39 53 40 43 52 9 10 54 27 5 51 25 42 - 67 0 0 52 23 38 5 9 29 10 217 -40 53 9 44 51 38 30 53 55 57 50 55 9 - 68 0 0 51 52 42 5 9 32 11 217 -40 52 38 39 51 7 43 53 24 42 50 24 31 - 69 0 0 51 21 41 5 9 36 11 216 -41 52 7 28 50 36 51 52 53 20 49 53 48 - 70 0 0 50 50 35 5 9 40 12 215 -42 51 36 12 50 5 56 52 21 53 49 23 1 - 71 0 0 50 19 27 5 9 45 13 214 -42 51 4 52 49 34 57 51 50 23 48 52 13 - 72 0 0 49 48 17 5 9 49 14 213 -43 50 33 31 49 3 58 51 18 49 48 21 23 - 73 0 0 49 17 6 5 9 54 15 213 -44 50 2 9 48 32 58 50 47 15 47 50 34 - 74 0 0 48 45 56 5 10 0 15 212 -44 49 30 47 48 2 0 50 15 41 47 19 46 - 75 0 0 48 14 48 5 10 5 16 211 -45 48 59 27 47 31 4 49 44 7 46 49 0 - 76 0 0 47 43 44 5 10 11 17 210 -45 48 28 9 47 0 11 49 12 37 46 18 19 - 77 0 0 47 12 43 5 10 17 18 209 -46 47 56 56 46 29 23 48 41 10 45 47 42 - 78 0 0 46 41 49 5 10 24 18 209 -47 47 25 48 45 58 40 48 9 49 45 17 11 - 79 0 0 46 11 0 5 10 31 19 208 -47 46 54 47 45 28 5 47 38 34 44 46 47 - 80 0 0 45 40 20 5 10 38 20 207 -48 46 23 53 44 57 37 47 7 26 44 16 31 - 81 0 0 45 9 49 5 10 45 21 206 -48 45 53 8 44 27 18 46 36 27 43 46 24 - 82 0 0 44 39 27 5 10 53 21 205 -49 45 22 33 43 57 10 46 5 38 43 16 28 - 83 0 0 44 9 17 5 11 1 22 204 -49 44 52 9 43 27 12 45 34 59 42 46 42 - 84 0 0 43 39 18 5 11 9 23 203 -50 44 21 57 42 57 27 45 4 33 42 17 9 - 85 0 0 43 9 33 5 11 18 24 203 -50 43 51 57 42 27 54 44 34 19 41 47 48 - 86 0 0 42 40 1 5 11 26 24 202 -50 43 22 12 41 58 36 44 4 20 41 18 42 - 87 0 0 42 10 44 5 11 35 25 201 -51 42 52 42 41 29 32 43 34 35 40 49 50 - 88 0 0 41 41 43 5 11 45 26 200 -51 42 23 27 41 0 44 43 5 6 40 21 15 - 89 0 0 41 12 59 5 11 54 26 199 -51 41 54 29 40 32 13 42 35 54 39 52 55 - 90 0 0 40 44 32 5 12 4 27 198 -52 41 25 49 40 3 59 42 7 0 39 24 53 - 91 0 0 40 16 24 5 12 14 28 197 -52 40 57 27 39 36 3 41 38 24 38 57 9 - 92 0 0 39 48 34 5 12 24 29 196 -52 40 29 24 39 8 26 41 10 7 38 29 44 - 93 0 0 39 21 4 5 12 35 29 195 -52 40 1 41 38 41 9 40 42 10 38 2 39 - 94 0 0 38 53 55 5 12 46 30 195 -52 39 34 18 38 14 12 40 14 35 37 35 54 - 95 0 0 38 27 7 5 12 56 30 194 -53 39 7 17 37 47 36 39 47 20 37 9 29 - 96 0 0 38 0 41 5 13 8 31 193 -53 38 40 38 37 21 22 39 20 28 36 43 27 - 97 0 0 37 34 37 5 13 19 32 192 -53 38 14 22 36 55 30 38 53 59 36 17 46 - 98 0 0 37 8 56 5 13 30 32 191 -53 37 48 29 36 30 1 38 27 53 35 52 28 - 99 0 0 36 43 39 5 13 42 33 190 -53 37 22 59 36 4 56 38 2 11 35 27 33 -100 0 0 36 18 46 5 13 54 33 189 -53 36 57 54 35 40 14 37 36 53 35 3 3 -101 0 0 35 54 18 5 14 6 34 188 -53 36 33 14 35 15 57 37 12 1 34 38 56 -102 0 0 35 30 14 5 14 18 34 187 -52 36 8 59 34 52 5 36 47 34 34 15 14 -103 0 0 35 6 37 5 14 30 35 186 -52 35 45 11 34 28 38 36 23 34 33 51 58 -104 0 0 34 43 26 5 14 43 35 184 -52 35 21 48 34 5 38 36 0 0 33 29 7 -105 0 0 34 20 41 5 14 56 36 183 -52 34 58 52 33 43 3 35 36 53 33 6 42 -106 0 0 33 58 23 5 15 8 36 182 -52 34 36 24 33 20 55 35 14 14 32 44 44 -107 0 0 33 36 32 5 15 21 36 181 -51 34 14 23 32 59 15 34 52 2 32 23 13 -108 0 0 33 15 9 5 15 34 37 180 -51 33 52 50 32 38 2 34 30 19 32 2 9 -109 0 0 32 54 15 5 15 47 37 179 -51 33 31 45 32 17 16 34 9 4 31 41 32 -110 0 0 32 33 48 5 16 0 37 178 -50 33 11 9 31 56 59 33 48 18 31 21 24 -111 0 0 32 13 50 5 16 13 38 177 -50 32 51 2 31 37 10 33 28 1 31 1 43 -112 0 0 31 54 22 5 16 27 38 176 -50 32 31 24 31 17 50 33 8 14 30 42 31 -113 0 0 31 35 22 5 16 40 38 174 -49 32 12 16 30 58 59 32 48 56 30 23 48 -114 0 0 31 16 52 5 16 53 38 173 -49 31 53 37 30 40 38 32 30 9 30 5 34 -115 0 0 30 58 52 5 17 7 39 172 -48 31 35 29 30 22 45 32 11 52 29 47 50 -116 0 0 30 41 22 5 17 20 39 171 -48 31 17 51 30 5 23 31 54 6 29 30 35 -117 0 0 30 24 22 5 17 34 39 170 -47 31 0 43 29 48 31 31 36 50 29 13 50 -118 0 0 30 7 53 5 17 48 39 169 -47 30 44 6 29 32 9 31 20 6 28 57 34 -119 0 0 29 51 54 5 18 1 39 167 -46 30 28 0 29 16 17 31 3 52 28 41 49 -120 0 0 29 36 27 5 18 15 39 166 -46 30 12 26 29 0 56 30 48 10 28 26 35 -121 0 0 29 21 30 5 18 28 39 165 -45 29 57 22 28 46 6 30 33 0 28 11 51 -122 0 0 29 7 5 5 18 42 39 164 -44 29 42 51 28 31 47 30 18 22 27 57 38 -123 0 0 28 53 11 5 18 56 39 163 -44 29 28 51 28 17 59 30 4 16 27 43 55 -124 0 0 28 39 49 5 19 9 39 162 -43 29 15 23 28 4 43 29 50 41 27 30 44 -125 0 0 28 26 59 5 19 23 39 161 -42 29 2 27 27 51 58 29 37 40 27 18 4 -126 0 0 28 14 40 5 19 36 39 159 -42 28 50 3 27 39 45 29 25 10 27 5 56 -127 0 0 28 2 54 5 19 50 39 158 -41 28 38 11 27 28 3 29 13 14 26 54 19 -128 0 0 27 51 40 5 20 3 39 157 -40 28 26 52 27 16 54 29 1 50 26 43 14 -129 0 0 27 40 58 5 20 17 39 156 -40 28 16 6 27 6 16 28 50 58 26 32 41 -130 0 0 27 30 48 5 20 30 38 155 -39 28 5 52 26 56 11 28 40 40 26 22 40 -131 0 0 27 21 12 5 20 43 38 154 -38 27 56 11 26 46 38 28 30 55 26 13 10 -132 0 0 27 12 8 5 20 56 38 153 -37 27 47 3 26 37 38 28 21 44 26 4 13 -133 0 0 27 3 36 5 21 10 38 152 -37 27 38 29 26 29 10 28 13 5 25 55 49 -134 0 0 26 55 38 5 21 23 37 151 -36 27 30 27 26 21 15 28 5 1 25 47 57 -135 0 0 26 48 13 5 21 36 37 150 -35 27 22 59 26 13 52 27 57 29 25 40 37 -136 0 0 26 41 21 5 21 48 37 149 -34 27 16 4 26 7 3 27 50 32 25 33 50 -137 0 0 26 35 2 5 22 1 36 148 -33 27 9 43 26 0 47 27 44 8 25 27 36 -138 0 0 26 29 17 5 22 14 36 147 -33 27 3 55 25 55 3 27 38 18 25 21 54 -139 0 0 26 24 5 5 22 26 36 146 -32 26 58 41 25 49 53 27 33 2 25 16 46 -140 0 0 26 19 26 5 22 39 35 145 -31 26 54 1 25 45 16 27 28 21 25 12 11 -141 0 0 26 15 21 5 22 51 35 144 -30 26 49 55 25 41 13 27 24 13 25 8 8 -142 0 0 26 11 50 5 23 3 34 143 -29 26 46 23 25 37 43 27 20 40 25 4 39 -143 0 0 26 8 53 5 23 15 34 142 -29 26 43 25 25 34 46 27 17 41 25 1 44 -144 0 0 26 6 30 5 23 27 33 141 -28 26 41 1 25 32 23 27 15 16 24 59 21 -145 0 0 26 4 40 5 23 39 33 140 -27 26 39 11 25 30 34 27 13 26 24 57 33 -146 0 0 26 3 25 5 23 50 32 139 -26 26 37 56 25 29 19 27 12 11 24 56 17 -147 0 0 26 2 44 5 24 2 32 139 -25 26 37 15 25 28 38 27 11 30 24 55 36 -148 0 0 26 2 37 5 24 13 31 138 -24 26 37 9 25 28 30 27 11 24 24 55 28 -149 0 0 26 3 4 5 24 24 31 137 -24 26 37 37 25 28 57 27 11 53 24 55 54 -150 0 0 26 4 6 5 24 35 30 136 -23 26 38 40 25 29 58 27 12 57 24 56 54 -151 0 0 26 5 42 5 24 45 29 135 -22 26 40 17 25 31 33 27 14 36 24 58 27 -152 0 0 26 7 53 5 24 56 29 135 -21 26 42 30 25 33 42 27 16 51 25 0 35 -153 0 0 26 10 39 5 25 6 28 134 -20 26 45 17 25 36 25 27 19 40 25 3 17 -154 0 0 26 13 59 5 25 16 27 133 -19 26 48 39 25 39 43 27 23 4 25 6 33 -155 0 0 26 17 54 5 25 26 27 133 -18 26 52 37 25 43 36 27 27 4 25 10 23 -156 0 0 26 22 23 5 25 36 26 132 -18 26 57 9 25 48 3 27 31 39 25 14 48 -157 0 0 26 27 28 5 25 45 25 131 -17 27 2 17 25 53 5 27 36 50 25 19 47 -158 0 0 26 33 7 5 25 54 25 131 -16 27 8 0 25 58 41 27 42 36 25 25 20 -159 0 0 26 39 22 5 26 3 24 130 -15 27 14 18 26 4 52 27 48 58 25 31 28 -160 0 0 26 46 11 5 26 12 23 129 -14 27 21 11 26 11 38 27 55 55 25 38 10 -161 0 0 26 53 36 5 26 20 22 129 -13 27 28 40 26 18 58 28 3 28 25 45 27 -162 0 0 27 1 36 5 26 28 22 128 -12 27 36 44 26 26 54 28 11 37 25 53 18 -163 0 0 27 10 11 5 26 36 21 127 -11 27 45 24 26 35 24 28 20 22 26 1 44 -164 0 0 27 19 21 5 26 44 20 127 -11 27 54 39 26 44 30 28 29 42 26 10 45 -165 0 0 27 29 6 5 26 51 19 126 -10 28 4 30 26 54 10 28 39 38 26 20 20 -166 0 0 27 39 27 5 26 59 19 126 -9 28 14 56 27 4 25 28 50 10 26 30 31 -167 0 0 27 50 23 5 27 5 18 125 -8 28 25 58 27 15 15 29 1 18 26 41 15 -168 0 0 28 1 54 5 27 12 17 125 -7 28 37 35 27 26 41 29 13 2 26 52 35 -169 0 0 28 14 1 5 27 18 16 124 -6 28 49 49 27 38 41 29 25 22 27 4 29 -170 0 0 28 26 43 5 27 24 15 124 -5 29 2 37 27 51 16 29 38 17 27 16 58 -171 0 0 28 40 0 5 27 30 14 123 -5 29 16 1 28 4 26 29 51 49 27 30 2 -172 0 0 28 53 52 5 27 35 14 122 -4 29 30 1 28 18 11 30 5 56 27 43 40 -173 0 0 29 8 19 5 27 40 13 122 -3 29 44 36 28 32 31 30 20 39 27 57 53 -174 0 0 29 23 22 5 27 45 12 121 -2 29 59 47 28 47 26 30 35 58 28 12 41 -175 0 0 29 38 59 5 27 50 11 121 -1 30 15 33 29 2 56 30 51 52 28 28 3 -176 0 0 29 55 12 5 27 54 10 120 0 30 31 54 29 19 0 31 8 22 28 44 0 Uncertainty in time = +/- 6 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 6392-00465-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 22 42 58.5238 DE: -20 12 08.319 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .024 ) * V mag [mag]: 10.9 * B mag [mag]: 11.6 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (559) Nanon approx. diameter [km]: 80 approx. diameter ["]: .059 distance from Earth [AU]: 1.86300 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 908 number of rejected observations: 92 time covered by the observations: 1905 Mar 08 - 2008 Feb 13 1 sigma uncertainty ellipse (major, minor, PA): 0.023, 0.015, 76° remarks: * orbital elements for (559) Nanon : Mean anomaly = 96.18857163 deg Arg. of pericenter = 130.83004643 deg Long. of node = 112.19367357 deg Inclination = 9.30662998 deg Eccentricity = 0.06597109 Semimajor axis = 2.71309668 AU Perihelion dist = 2.53411073 AU Mag: H = 9.47, G = 0.15 Epoch of elements : MJD 55105.22100000 TDT (2009 Oct 01.221) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Oct 1 559 Nanon 5h 18.7m UT 10.9 22 42 58.524-20 12 8.32TYC 6392-00465-1 11.6 13.6 80 11.4 1.863 -1.282 -4.76 -109.0090 -20.200 97.76 -3.24 5.3115 -0.19797 0.74759 -3.82742 -1.01050 0.00256 0.00205 2000 95.0370832009 926.00000130.830046112.193674 9.3066300.06597109 2.7130967 2.5341107 9.4 5.00.15 RATE 2.2054950 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.033 0.029 83 1.49 0.029 0 54545.5020091001_0465-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 14:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org