IOTA/IOTA-ES occultation update for (317) Roxane / TYC 0272-00673-1 event on 2010 Dec 15, 01:24 UT Visible from Summary ------- On 2010 Dec 15 UT, the 19 km diameter asteroid (317) Roxane will occult a 9.5 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.4 mag to 14.9 mag (the magnitude of the asteroid) for at most 1.0 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: 30 * date and approx. time of event: 2010 Dec 15, 01:20 - 2010 Dec 15, 01:24 UT * magnitude of target star: 9.5 * magnitude drop [mag]: 5.4 * estimated maximum duration [s]: 1.0 * Moon: 63 % sunlit, 167° distance * Sun: 87° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 24 * 1 sigma uncertainty interval [path widths]: +/- 2.26 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .025 +/- .025) * 1 sigma uncertainty ellipse (major, minor, PA): ( .025", .025", 97° ) * approx speed of asteroid's shadow [km/s]: 18.1865 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0272-00673-1 by 317 Roxane on 2010 Dec 15 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 - 19 0 0 60 47 12 1 20 4 0 87 -52 60 40 35 60 53 49 .. .. .. 61 23 52 - 18 0 0 60 48 30 1 20 4 1 88 -52 60 41 53 60 55 7 .. .. .. 61 25 9 - 17 0 0 60 49 33 1 20 5 1 89 -52 60 42 57 60 56 10 .. .. .. 61 26 11 - 16 0 0 60 50 21 1 20 5 2 90 -52 60 43 45 60 56 58 .. .. .. 61 26 59 - 15 0 0 60 50 55 1 20 5 2 91 -52 60 44 19 60 57 32 .. .. .. 61 27 32 - 14 0 0 60 51 14 1 20 5 3 92 -52 60 44 38 60 57 51 60 14 56 61 27 51 - 13 0 0 60 51 19 1 20 5 3 93 -52 60 44 43 60 57 55 60 15 1 61 27 55 - 12 0 0 60 51 9 1 20 5 4 94 -52 60 44 33 60 57 45 60 14 51 61 27 45 - 11 0 0 60 50 44 1 20 6 4 94 -52 60 44 8 60 57 21 60 14 26 61 27 21 - 10 0 0 60 50 5 1 20 6 5 95 -52 60 43 29 60 56 42 60 13 47 61 26 42 - 9 0 0 60 49 11 1 20 6 5 96 -51 60 42 35 60 55 48 60 12 53 61 25 49 - 8 0 0 60 48 3 1 20 7 6 97 -51 60 41 26 60 54 39 60 11 43 61 24 41 - 7 0 0 60 46 39 1 20 7 6 98 -51 60 40 3 60 53 16 60 10 19 61 23 18 - 6 0 0 60 45 1 1 20 7 7 99 -51 60 38 25 60 51 38 60 8 41 61 21 41 - 5 0 0 60 43 9 1 20 8 7 100 -51 60 36 32 60 49 46 60 6 47 61 19 49 - 4 0 0 60 41 1 1 20 8 8 101 -51 60 34 24 60 47 39 60 4 38 61 17 43 - 3 0 0 60 38 39 1 20 9 8 101 -50 60 32 2 60 45 16 60 2 14 61 15 22 - 2 0 0 60 36 1 1 20 10 9 102 -50 60 29 24 60 42 39 59 59 36 61 12 46 - 1 0 0 60 33 9 1 20 10 9 103 -50 60 26 32 60 39 48 59 56 42 61 9 56 0 0 0 60 30 2 1 20 11 10 104 -50 60 23 24 60 36 41 59 53 33 61 6 50 1 0 0 60 26 40 1 20 11 10 105 -50 60 20 2 60 33 19 59 50 9 61 3 30 2 0 0 60 23 3 1 20 12 11 106 -49 60 16 24 60 29 42 59 46 29 60 59 55 3 0 0 60 19 10 1 20 13 11 107 -49 60 12 31 60 25 50 59 42 35 60 56 4 4 0 0 60 15 2 1 20 14 12 108 -49 60 8 23 60 21 42 59 38 25 60 51 59 5 0 0 60 10 39 1 20 14 12 108 -49 60 3 59 60 17 20 59 33 59 60 47 38 6 0 0 60 6 1 1 20 15 13 109 -48 59 59 20 60 12 42 59 29 18 60 43 3 7 0 0 60 1 7 1 20 16 13 110 -48 59 54 26 60 7 48 59 24 21 60 38 12 8 0 0 59 55 57 1 20 17 14 111 -48 59 49 16 60 2 39 59 19 9 60 33 5 9 0 0 59 50 32 1 20 18 14 112 -48 59 43 50 59 57 15 59 13 41 60 27 43 10 0 0 59 44 51 1 20 19 15 113 -47 59 38 9 59 51 34 59 7 57 60 22 5 11 0 0 59 38 54 1 20 20 15 114 -47 59 32 11 59 45 38 59 1 57 60 16 12 12 0 0 59 32 42 1 20 21 16 115 -47 59 25 58 59 39 26 58 55 41 60 10 3 13 0 0 59 26 13 1 20 22 16 116 -46 59 19 29 59 32 58 58 49 9 60 3 38 14 0 0 59 19 28 1 20 23 17 117 -46 59 12 43 59 26 14 58 42 20 59 56 57 15 0 0 59 12 27 1 20 25 17 117 -46 59 5 42 59 19 14 58 35 15 59 50 0 16 0 0 59 5 10 1 20 26 18 118 -46 58 58 24 59 11 57 58 27 54 59 42 46 17 0 0 58 57 36 1 20 27 18 119 -45 58 50 49 59 4 24 58 20 16 59 35 17 18 0 0 58 49 46 1 20 29 19 120 -45 58 42 58 58 56 35 58 12 22 59 27 31 19 0 0 58 41 39 1 20 30 19 121 -44 58 34 50 58 48 29 58 4 11 59 19 28 20 0 0 58 33 15 1 20 31 20 122 -44 58 26 26 58 40 6 57 55 43 59 11 9 21 0 0 58 24 35 1 20 33 20 123 -44 58 17 44 58 31 26 57 46 58 59 2 33 22 0 0 58 15 37 1 20 34 21 124 -43 58 8 46 58 22 29 57 37 56 58 53 40 23 0 0 58 6 22 1 20 36 21 125 -43 57 59 30 58 13 15 57 28 36 58 44 30 24 0 0 57 56 51 1 20 38 22 126 -43 57 49 58 58 3 44 57 19 0 58 35 3 25 0 0 57 47 1 1 20 39 22 127 -42 57 40 8 57 53 56 57 9 6 58 25 18 26 0 0 57 36 55 1 20 41 23 127 -42 57 30 0 57 43 50 56 58 54 58 15 17 27 0 0 57 26 30 1 20 43 23 128 -41 57 19 35 57 33 27 56 48 25 58 4 58 28 0 0 57 15 48 1 20 44 24 129 -41 57 8 52 57 22 46 56 37 38 57 54 21 29 0 0 57 4 49 1 20 46 24 130 -40 56 57 51 57 11 47 56 26 33 57 43 26 30 0 0 56 53 31 1 20 48 25 131 -40 56 46 33 57 0 30 56 15 10 57 32 14 31 0 0 56 41 56 1 20 50 26 132 -40 56 34 56 56 48 56 56 3 30 57 20 44 32 0 0 56 30 2 1 20 52 26 133 -39 56 23 2 56 37 3 55 51 31 57 8 56 33 0 0 56 17 50 1 20 54 27 134 -39 56 10 49 56 24 52 55 39 14 56 56 49 34 0 0 56 5 20 1 20 56 27 135 -38 55 58 18 56 12 23 55 26 38 56 44 25 35 0 0 55 52 32 1 20 59 28 136 -38 55 45 28 55 59 36 55 13 44 56 31 42 36 0 0 55 39 25 1 21 1 28 137 -37 55 32 20 55 46 30 55 0 32 56 18 40 37 0 0 55 25 59 1 21 3 29 138 -37 55 18 54 55 33 5 54 47 1 56 5 20 38 0 0 55 12 15 1 21 6 29 139 -36 55 5 9 55 19 22 54 33 12 55 51 42 39 0 0 54 58 12 1 21 8 30 140 -36 54 51 5 55 5 20 54 19 4 55 37 45 40 0 0 54 43 51 1 21 11 30 141 -35 54 36 43 54 51 0 54 4 37 55 23 29 41 0 0 54 29 11 1 21 13 31 142 -34 54 22 2 54 36 21 53 49 51 55 8 54 42 0 0 54 14 12 1 21 16 32 143 -34 54 7 2 54 21 23 53 34 47 54 54 1 43 0 0 53 58 54 1 21 18 32 144 -33 53 51 43 54 6 6 53 19 23 54 38 49 44 0 0 53 43 17 1 21 21 33 145 -33 53 36 5 53 50 30 53 3 41 54 23 17 45 0 0 53 27 22 1 21 24 33 146 -32 53 20 8 53 34 36 52 47 40 54 7 27 46 0 0 53 11 7 1 21 27 34 147 -32 53 3 53 53 18 22 52 31 21 53 51 18 47 0 0 52 54 34 1 21 30 34 148 -31 52 47 19 53 1 50 52 14 42 53 34 50 48 0 0 52 37 42 1 21 33 35 149 -30 52 30 26 52 44 58 51 57 45 53 18 3 49 0 0 52 20 31 1 21 36 36 150 -30 52 13 14 52 27 48 51 40 29 53 0 58 50 0 0 52 3 1 1 21 39 36 151 -29 51 55 43 52 10 20 51 22 54 52 43 33 51 0 0 51 45 13 1 21 42 37 153 -29 51 37 54 51 52 32 51 5 1 52 25 50 52 0 0 51 27 6 1 21 46 37 154 -28 51 19 46 51 34 26 50 46 49 52 7 48 53 0 0 51 8 40 1 21 49 38 155 -27 51 1 20 51 16 1 50 28 19 51 49 27 54 0 0 50 49 56 1 21 53 38 156 -27 50 42 35 50 57 18 50 9 30 51 30 48 55 0 0 50 30 54 1 21 56 39 157 -26 50 23 32 50 38 17 49 50 23 51 11 51 56 0 0 50 11 34 1 22 0 39 158 -25 50 4 11 50 18 58 49 30 59 50 52 35 57 0 0 49 51 56 1 22 3 40 159 -25 49 44 32 49 59 21 49 11 16 50 33 1 58 0 0 49 32 0 1 22 7 40 161 -24 49 24 35 49 39 25 48 51 16 50 13 10 59 0 0 49 11 47 1 22 11 41 162 -23 49 4 21 49 19 13 48 30 59 49 53 1 60 0 0 48 51 16 1 22 15 42 163 -22 48 43 50 48 58 43 48 10 25 49 32 34 61 0 0 48 30 28 1 22 19 42 164 -22 48 23 2 48 37 56 47 49 33 49 11 50 62 0 0 48 9 24 1 22 23 43 166 -21 48 1 57 48 16 52 47 28 25 48 50 49 63 0 0 47 48 3 1 22 27 43 167 -20 47 40 35 47 55 32 47 7 1 48 29 32 64 0 0 47 26 26 1 22 31 44 168 -20 47 18 57 47 33 55 46 45 21 48 7 58 65 0 0 47 4 33 1 22 35 44 170 -19 46 57 4 47 12 3 46 23 25 47 46 8 66 0 0 46 42 25 1 22 40 45 171 -18 46 34 55 46 49 55 46 1 14 47 24 3 67 0 0 46 20 2 1 22 44 45 172 -17 46 12 31 46 27 32 45 38 48 47 1 42 68 0 0 45 57 23 1 22 49 45 174 -16 45 49 53 46 4 55 45 16 8 46 39 7 69 0 0 45 34 31 1 22 53 46 175 -16 45 27 0 45 42 3 44 53 13 46 16 17 70 0 0 45 11 25 1 22 58 46 177 -15 45 3 54 45 18 57 44 30 5 45 53 13 71 0 0 44 48 6 1 23 3 47 178 -14 44 40 34 44 55 38 44 6 44 45 29 55 72 0 0 44 24 34 1 23 7 47 180 -13 44 17 2 44 32 7 43 43 11 45 6 24 73 0 0 44 0 49 1 23 12 48 181 -12 43 53 17 44 8 22 43 19 25 44 42 41 74 0 0 43 36 53 1 23 17 48 183 -12 43 29 21 43 44 26 42 55 28 44 18 46 75 0 0 43 12 46 1 23 22 48 184 -11 43 5 13 43 20 19 42 31 20 43 54 40 76 0 0 42 48 28 1 23 27 49 186 -10 42 40 55 42 56 1 42 7 1 43 30 23 77 0 0 42 24 0 1 23 32 49 187 -9 42 16 27 42 31 34 41 42 33 43 5 55 78 0 0 41 59 23 1 23 37 49 189 -8 41 51 50 42 6 56 41 17 55 42 41 18 79 0 0 41 34 37 1 23 42 50 191 -7 41 27 4 41 42 10 40 53 9 42 16 32 80 0 0 41 9 43 1 23 48 50 192 -6 41 2 10 41 17 16 40 28 16 41 51 37 81 0 0 40 44 41 1 23 53 50 194 -6 40 37 9 40 52 15 40 3 15 41 26 35 82 0 0 40 19 33 1 23 58 50 196 -5 40 12 1 40 27 6 39 38 8 41 1 27 83 0 0 39 54 19 1 24 4 50 197 -4 39 46 47 40 1 52 39 12 55 40 36 11 84 0 0 39 29 0 1 24 9 51 199 -3 39 21 28 39 36 33 38 47 37 40 10 51 85 0 0 39 3 36 1 24 15 51 201 -2 38 56 4 39 11 9 38 22 14 39 45 25 86 0 0 38 38 9 1 24 20 51 203 -1 38 30 37 38 45 41 37 56 48 39 19 56 87 0 0 38 12 38 1 24 26 51 204 0 38 5 7 38 20 10 37 31 20 38 54 24 Uncertainty in time = +/- 2 secs Prediction of 2010 Jul 12.0 Data for the target star ------------------------ * name: TYC 0272-00673-1 * constellation : Virgo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 11 46 14.3667 DE: +01 32 32.712 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .020, .023 ) * V mag [mag]: 9.5 * B mag [mag]: 9.9 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (317) Roxane approx. diameter [km]: 19 approx. diameter ["]: .011 distance from Earth [AU]: 2.33700 * orbital information: orbit source: Preston date of fit: 2010 Jul 12 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1109 number of rejected observations: 148 time covered by the observations: 1901 Jun 07 - 2010 Apr 05 1 sigma uncertainty ellipse (major, minor, PA): 0.015, 0.010, 111° remarks: * orbital elements for (317) Roxane : Mean anomaly = 174.13086457 deg Arg. of pericenter = 186.43489965 deg Long. of node = 151.43161082 deg Inclination = 1.76405882 deg Eccentricity = 0.08499782 Semimajor axis = 2.28682752 AU Perihelion dist = 2.09245217 AU Mag: H = 9.68, G = 0.15 Epoch of elements : MJD 55545.05900000 TDT (2010 Dec 15.059) ------ occelmnt file for Occult BEGIN ----------------------------------- 2010 Dec 15 317 Roxane 1h 24.6m UT 9.5 11 46 14.367 1 32 32.71TYC 0272-00673-1 9.9 14.9 19 1.0 2.337 2.395 -14.20 71.8059 1.547 157.58 -23.25 1.4099 0.23018 0.58491 9.54547 -3.77539 -0.00534 0.00231 2000 172.68902020101210.00000186.434900151.431611 1.7640590.08499782 2.2868275 2.092452210.0 5.00.15 RATE 2.8500600 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.025 0.025 97 3.26 0.025 0 0-3 2 055389.0020101215_0673-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2010 Jul 12, 05:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org