IOTA/IOTA-ES occultation update for (360) Carlova / TYC 5672-00688-1 event on 2009 Feb 10, 18:39 UT Visible from Summary ------- On 2009 Feb 10 UT, the 116 km diameter asteroid (360) Carlova will occult a 10.6 mag star in the constellation Serpens for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.4 mag to 15.0 mag (the magnitude of the asteroid) for at most 3.8 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: 78 * date and approx. time of event: 2009 Feb 10, 18:35 - 2009 Feb 10, 18:36 UT * magnitude of target star: 10.6 * magnitude drop [mag]: 4.4 * estimated maximum duration [s]: 3.8 * Moon: 98 % sunlit, 107° distance * Sun: 58° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 119 * 1 sigma uncertainty interval [path widths]: +/- 0.70 * 1 sigma uncertainty interval [seconds]: +/- 2.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .024 +/- .028) * 1 sigma uncertainty ellipse (major, minor, PA): ( .028", .024", 1° ) * approx speed of asteroid's shadow [km/s]: 30.5199 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5672-00688-1 by 360 Carlova on 2009 Feb 10 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 112 0 0 -14 3 30 18 35 31 1 104 -51 -14 36 51 -13 30 13 -15 23 40 -12 43 45 113 0 0 -14 18 39 18 35 31 2 104 -50 -14 52 0 -13 45 23 -15 38 49 -12 58 55 114 0 0 -14 33 46 18 35 31 3 104 -49 -15 7 6 -14 0 30 -15 53 55 -13 14 2 115 0 0 -14 48 50 18 35 32 4 104 -48 -15 22 10 -14 15 34 -16 8 58 -13 29 7 116 0 0 -15 3 51 18 35 32 5 103 -47 -15 37 11 -14 30 36 -16 23 58 -13 44 9 117 0 0 -15 18 49 18 35 32 6 103 -47 -15 52 8 -14 45 34 -16 38 55 -13 59 8 118 0 0 -15 33 43 18 35 33 7 103 -46 -16 7 2 -15 0 28 -16 53 48 -14 14 3 119 0 0 -15 48 33 18 35 33 8 103 -45 -16 21 52 -15 15 19 -17 8 37 -14 28 54 120 0 0 -16 3 19 18 35 34 9 102 -44 -16 36 37 -15 30 5 -17 23 22 -14 43 41 121 0 0 -16 18 1 18 35 34 10 102 -43 -16 51 18 -15 44 47 -17 38 2 -14 58 24 122 0 0 -16 32 37 18 35 35 11 102 -42 -17 5 54 -15 59 25 -17 52 38 -15 13 2 123 0 0 -16 47 9 18 35 36 12 101 -41 -17 20 25 -16 13 57 -18 7 8 -15 27 35 124 0 0 -17 1 35 18 35 36 13 101 -40 -17 34 51 -16 28 24 -18 21 33 -15 42 3 125 0 0 -17 15 56 18 35 37 14 101 -39 -17 49 11 -16 42 45 -18 35 52 -15 56 25 126 0 0 -17 30 10 18 35 38 15 100 -38 -18 3 25 -16 57 0 -18 50 5 -16 10 41 127 0 0 -17 44 19 18 35 39 16 100 -38 -18 17 32 -17 11 10 -19 4 11 -16 24 52 128 0 0 -17 58 21 18 35 40 17 100 -37 -18 31 34 -17 25 12 -19 18 11 -16 38 55 129 0 0 -18 12 16 18 35 41 18 100 -36 -18 45 28 -17 39 9 -19 32 5 -16 52 53 130 0 0 -18 26 4 18 35 42 19 99 -35 -18 59 16 -17 52 58 -19 45 51 -17 6 43 131 0 0 -18 39 46 18 35 43 20 99 -34 -19 12 56 -18 6 40 -19 59 30 -17 20 26 132 0 0 -18 53 19 18 35 45 21 98 -33 -19 26 28 -18 20 14 -20 13 1 -17 34 2 133 0 0 -19 6 45 18 35 46 22 98 -32 -19 39 53 -18 33 41 -20 26 25 -17 47 30 134 0 0 -19 20 3 18 35 47 22 98 -31 -19 53 10 -18 47 0 -20 39 40 -18 0 50 135 0 0 -19 33 12 18 35 49 23 97 -30 -20 6 19 -19 0 10 -20 52 47 -18 14 2 136 0 0 -19 46 14 18 35 50 24 97 -29 -20 19 19 -19 13 12 -21 5 46 -18 27 6 137 0 0 -19 59 6 18 35 52 25 97 -28 -20 32 10 -19 26 6 -21 18 36 -18 40 0 138 0 0 -20 11 50 18 35 53 26 96 -27 -20 44 53 -19 38 50 -21 31 17 -18 52 47 139 0 0 -20 24 24 18 35 55 27 96 -26 -20 57 26 -19 51 26 -21 43 49 -19 5 24 140 0 0 -20 36 49 18 35 57 28 95 -25 -21 9 50 -20 3 52 -21 56 11 -19 17 51 141 0 0 -20 49 5 18 35 58 29 95 -25 -21 22 5 -20 16 9 -22 8 24 -19 30 9 142 0 0 -21 1 10 18 36 0 30 95 -24 -21 34 9 -20 28 16 -22 20 27 -19 42 18 143 0 0 -21 13 6 18 36 2 31 94 -23 -21 46 4 -20 40 13 -22 32 20 -19 54 16 144 0 0 -21 24 52 18 36 4 32 94 -22 -21 57 48 -20 51 59 -22 44 3 -20 6 5 145 0 0 -21 36 27 18 36 6 33 93 -21 -22 9 22 -21 3 36 -22 55 36 -20 17 43 146 0 0 -21 47 52 18 36 8 34 93 -20 -22 20 46 -21 15 2 -23 6 57 -20 29 10 147 0 0 -21 59 6 18 36 10 35 92 -19 -22 31 59 -21 26 17 -23 18 9 -20 40 27 148 0 0 -22 10 9 18 36 12 36 92 -18 -22 43 1 -21 37 21 -23 29 9 -20 51 33 149 0 0 -22 21 1 18 36 14 37 91 -17 -22 53 52 -21 48 15 -23 39 58 -21 2 28 150 0 0 -22 31 42 18 36 16 38 91 -16 -23 4 32 -21 58 57 -23 50 36 -21 13 12 151 0 0 -22 42 12 18 36 18 39 90 -15 -23 15 0 -22 9 28 -24 1 3 -21 23 44 152 0 0 -22 52 30 18 36 21 40 90 -14 -23 25 17 -22 19 47 -24 11 18 -21 34 5 153 0 0 -23 2 36 18 36 23 41 89 -13 -23 35 22 -22 29 54 -24 21 21 -21 44 14 154 0 0 -23 12 31 18 36 25 41 89 -12 -23 45 15 -22 39 50 -24 31 13 -21 54 12 155 0 0 -23 22 13 18 36 28 42 88 -12 -23 54 57 -22 49 34 -24 40 53 -22 3 57 156 0 0 -23 31 43 18 36 30 43 88 -11 -24 4 26 -22 59 5 -24 50 20 -22 13 30 157 0 0 -23 41 2 18 36 32 44 87 -10 -24 13 43 -23 8 25 -24 59 35 -22 22 51 158 0 0 -23 50 7 18 36 35 45 86 -9 -24 22 47 -23 17 32 -25 8 38 -22 32 0 159 0 0 -23 59 1 18 36 37 46 86 -8 -24 31 40 -23 26 26 -25 17 29 -22 40 56 160 0 0 -24 7 42 18 36 40 47 85 -7 -24 40 19 -23 35 8 -25 26 7 -22 49 40 161 0 0 -24 16 10 18 36 42 48 84 -6 -24 48 46 -23 43 37 -25 34 32 -22 58 10 162 0 0 -24 24 25 18 36 45 49 84 -5 -24 57 0 -23 51 54 -25 42 45 -23 6 28 163 0 0 -24 32 27 18 36 48 50 83 -4 -25 5 1 -23 59 57 -25 50 44 -23 14 33 164 0 0 -24 40 16 18 36 50 51 82 -3 -25 12 49 -24 7 47 -25 58 31 -23 22 25 165 0 0 -24 47 52 18 36 53 51 82 -2 -25 20 24 -24 15 24 -26 6 4 -23 30 4 166 0 0 -24 55 15 18 36 56 52 81 -1 -25 27 46 -24 22 48 -26 13 24 -23 37 29 167 0 0 -25 2 25 18 36 58 53 80 -1 -25 34 54 -24 29 59 -26 20 31 -23 44 41 Uncertainty in time = +/- 3 secs [Prediction of 2008 Nov 6.0] Data for the target star ------------------------ * name: TYC 5672-00688-1 * constellation : Serpens * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 17 38 03.2812 DE: -14 05 33.113 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .027 ) * V mag [mag]: 10.6 * B mag [mag]: 11.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (360) Carlova approx. diameter [km]: 116 approx. diameter ["]: .040 distance from Earth [AU]: 3.95600 * orbital information: orbit source: Preston date of fit: 2008 Nov 05 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 836 number of rejected observations: 107 time covered by the observations: 1904 Mar 21 - 2008 Jun 01 1 sigma uncertainty ellipse (major, minor, PA): 0.011, 0.009, 100° remarks: * orbital elements for (360) Carlova : Mean anomaly = 193.12504795 deg Arg. of pericenter = 288.33865935 deg Long. of node = 132.65785067 deg Inclination = 11.71401802 deg Eccentricity = 0.18146672 Semimajor axis = 2.99750750 AU Perihelion dist = 2.45355963 AU Mag: H = 8.51, G = 0.15 Epoch of elements : MJD 54872.77700000 TDT (2009 Feb 10.777) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Feb 10 360 Carlova 18h 38.9m UT 10.6 17 38 3.281-14 5 33.11TYC 5672-00688-1 11.3 15.0 116 3.8 3.956 2.631 1.19 -156.1888 -14.093 -96.17 -14.12 18.6487 0.00779 -0.21530 17.21800 0.53384 -0.00504 0.00072 2000 192.5976492009 2 8.00000288.338659132.657851 11.7140180.18146672 2.9975075 2.4535596 8.5 5.00.15 RATE 1.8991690 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.028 0.024 1 1.70 0.028 0 54776.5020090210_0688-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 06, 05:37 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org