IOTA/IOTA-ES occultation update for (441) Bathilde / TYC 4908-00183-1 event on 2022 Feb 27, 18:13 UT Visible from Africa Summary ------- On 2022 Feb 27 UT, the 64 km diameter asteroid (441) Bathilde will occult a 11.4 mag star in the constellation Sextans for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.29 mag to 12.33 mag (the magnitude of the asteroid) for at most 5.540 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2022 Feb 27, 18:06 - 2022 Feb 27, 18:20 * geocentric midpoint of event [JD]: 2459638.25923521 * magnitude of target star: 11.43 * magnitude drop [mag]: 1.29 * estimated maximum duration [s]: 5.540 * Moon: 12 % sunlit, 137° distance * Sun: 167° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 90 * 1 sigma uncertainty interval [path widths]: +/- 0.03 * 1 sigma uncertainty interval [seconds]: +/- 3.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.030, +/- 0.012) * 1 sigma uncertainty ellipse (major, minor, PA): (0.032", 0.001", 113°) * approx speed of asteroid's shadow [km/s]: 11.5617 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4908-00183-1 by 441 Bathilde on 2022 Feb 27 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 8 0 0 -23 58 27 18 19 49.2 1 94 9 -23 34 2 -24 23 3 -23 32 37 -24 24 29 .... - 7 0 0 -24 2 45 18 19 49.0 2 93 8 -23 38 19 -24 27 21 -23 36 54 -24 28 47 0.73 - 6 0 0 -24 7 32 18 19 48.5 3 93 7 -23 43 5 -24 32 9 -23 41 40 -24 33 35 0.83 - 5 0 0 -24 12 48 18 19 47.9 3 92 6 -23 48 20 -24 37 26 -23 46 55 -24 38 52 0.87 - 4 0 0 -24 18 32 18 19 47.0 4 92 5 -23 54 4 -24 43 11 -23 52 39 -24 44 37 0.90 - 3 0 0 -24 24 45 18 19 46.0 5 91 4 -24 0 15 -24 49 25 -23 58 50 -24 50 51 0.91 - 2 0 0 -24 31 26 18 19 44.7 6 91 4 -24 6 55 -24 56 7 -24 5 30 -24 57 34 0.92 - 1 0 0 -24 38 36 18 19 43.3 7 91 3 -24 14 3 -25 3 18 -24 12 38 -25 4 45 0.93 0 0 0 -24 46 13 18 19 41.7 8 90 2 -24 21 39 -25 10 57 -24 20 14 -25 12 24 0.94 1 0 0 -24 54 18 18 19 39.9 9 90 1 -24 29 43 -25 19 4 -24 28 18 -25 20 30 0.94 2 0 0 -25 2 51 18 19 37.9 10 89 0 -24 38 14 -25 27 38 -24 36 48 -25 29 5 0.95 3 0 0 -25 11 51 18 19 35.7 11 89 -1 -24 47 12 -25 36 40 -24 45 47 -25 38 7 0.95 4 0 0 -25 21 18 18 19 33.3 12 88 -2 -24 56 38 -25 46 9 -24 55 12 -25 47 36 0.95 5 0 0 -25 31 12 18 19 30.7 12 88 -3 -25 6 30 -25 56 5 -25 5 4 -25 57 32 0.96 6 0 0 -25 41 33 18 19 27.9 13 87 -3 -25 16 49 -26 6 28 -25 15 23 -26 7 55 0.96 7 0 0 -25 52 20 18 19 25.0 14 87 -4 -25 27 34 -26 17 17 -25 26 8 -26 18 45 0.96 8 0 0 -26 3 34 18 19 21.9 15 87 -5 -25 38 45 -26 28 33 -25 37 19 -26 30 0 0.96 9 0 0 -26 15 13 18 19 18.6 16 86 -6 -25 50 22 -26 40 15 -25 48 56 -26 41 42 0.96 10 0 0 -26 27 18 18 19 15.1 17 85 -7 -26 2 25 -26 52 22 -26 0 58 -26 53 50 0.96 11 0 0 -26 39 48 18 19 11.4 18 85 -7 -26 14 53 -27 4 55 -26 13 26 -27 6 23 0.96 12 0 0 -26 52 44 18 19 7.6 19 84 -8 -26 27 46 -27 17 54 -26 26 19 -27 19 22 0.97 13 0 0 -27 6 4 18 19 3.6 19 84 -9 -26 41 3 -27 31 17 -26 39 37 -27 32 45 0.97 14 0 0 -27 19 49 18 18 59.4 20 83 -10 -26 54 46 -27 45 5 -26 53 19 -27 46 33 0.97 15 0 0 -27 33 59 18 18 55.1 21 83 -11 -27 8 52 -27 59 17 -27 7 25 -28 0 45 0.97 16 0 0 -27 48 32 18 18 50.6 22 82 -11 -27 23 22 -28 13 53 -27 21 55 -28 15 21 0.97 17 0 0 -28 3 28 18 18 46.0 23 82 -12 -27 38 15 -28 28 52 -27 36 48 -28 30 21 0.97 18 0 0 -28 18 48 18 18 41.1 24 81 -13 -27 53 32 -28 44 15 -27 52 5 -28 45 44 0.97 19 0 0 -28 34 31 18 18 36.2 24 80 -14 -28 9 12 -29 0 1 -28 7 44 -29 1 30 0.97 20 0 0 -28 50 36 18 18 31.1 25 80 -14 -28 25 14 -29 16 9 -28 23 46 -29 17 39 0.97 21 0 0 -29 7 3 18 18 25.8 26 79 -15 -28 41 38 -29 32 40 -28 40 9 -29 34 10 0.97 22 0 0 -29 23 52 18 18 20.4 27 78 -16 -28 58 23 -29 49 32 -28 56 55 -29 51 2 0.97 23 0 0 -29 41 2 18 18 14.8 27 78 -17 -29 15 30 -30 6 46 -29 14 1 -30 8 16 0.97 24 0 0 -29 58 33 18 18 9.1 28 77 -17 -29 32 58 -30 24 21 -29 31 29 -30 25 51 0.97 25 0 0 -30 16 25 18 18 3.3 29 76 -18 -29 50 46 -30 42 16 -29 49 17 -30 43 47 0.97 26 0 0 -30 34 37 18 17 57.3 30 75 -19 -30 8 54 -31 0 32 -30 7 25 -31 2 2 0.97 27 0 0 -30 53 8 18 17 51.2 30 74 -19 -30 27 22 -31 19 7 -30 25 53 -31 20 38 0.98 28 0 0 -31 11 59 18 17 45.0 31 74 -20 -30 46 9 -31 38 1 -30 44 39 -31 39 32 0.98 29 0 0 -31 31 8 18 17 38.7 32 73 -21 -31 5 15 -31 57 14 -31 3 45 -31 58 46 0.98 30 0 0 -31 50 36 18 17 32.2 33 72 -21 -31 24 39 -32 16 46 -31 23 9 -32 18 18 0.98 31 0 0 -32 10 21 18 17 25.6 33 71 -22 -31 44 20 -32 36 35 -31 42 50 -32 38 7 0.98 32 0 0 -32 30 24 18 17 19.0 34 70 -22 -32 4 19 -32 56 42 -32 2 49 -32 58 14 0.98 33 0 0 -32 50 44 18 17 12.2 35 69 -23 -32 24 35 -33 17 5 -32 23 4 -33 18 38 0.98 34 0 0 -33 11 19 18 17 5.3 35 68 -24 -32 45 7 -33 37 45 -32 43 36 -33 39 18 0.98 35 0 0 -33 32 11 18 16 58.3 36 67 -24 -33 5 55 -33 58 41 -33 4 23 -34 0 13 0.98 36 0 0 -33 53 18 18 16 51.3 36 66 -25 -33 26 57 -34 19 51 -33 25 26 -34 21 24 0.98 37 0 0 -34 14 39 18 16 44.1 37 65 -25 -33 48 15 -34 41 17 -33 46 43 -34 42 50 0.98 38 0 0 -34 36 15 18 16 36.9 38 64 -26 -34 9 47 -35 2 56 -34 8 15 -35 4 30 0.98 39 0 0 -34 58 4 18 16 29.6 38 63 -26 -34 31 32 -35 24 49 -34 30 0 -35 26 23 0.98 40 0 0 -35 20 6 18 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126 0 0 -63 9 25 18 7 56.4 24 315 -14 -62 43 35 -63 35 27 -62 42 5 -63 36 58 1.01 127 0 0 -63 18 48 18 7 53.9 23 314 -14 -62 53 2 -63 44 47 -62 51 33 -63 46 18 1.01 128 0 0 -63 27 56 18 7 51.4 23 313 -13 -63 2 14 -63 53 50 -63 0 45 -63 55 21 1.01 129 0 0 -63 36 48 18 7 49.0 22 312 -13 -63 11 10 -64 2 39 -63 9 41 -64 4 9 1.01 130 0 0 -63 45 25 18 7 46.6 22 311 -12 -63 19 50 -64 11 11 -63 18 21 -64 12 41 1.01 131 0 0 -63 53 46 18 7 44.3 21 310 -12 -63 28 15 -64 19 29 -63 26 46 -64 20 59 1.01 132 0 0 -64 1 51 18 7 42.1 21 309 -12 -63 36 24 -64 27 31 -63 34 56 -64 29 0 1.01 133 0 0 -64 9 42 18 7 39.9 21 308 -11 -63 44 18 -64 35 18 -63 42 50 -64 36 47 1.01 134 0 0 -64 17 18 18 7 37.7 20 308 -11 -63 51 57 -64 42 50 -63 50 29 -64 44 19 1.01 135 0 0 -64 24 38 18 7 35.7 20 307 -11 -63 59 21 -64 50 7 -63 57 53 -64 51 36 1.01 136 0 0 -64 31 44 18 7 33.6 19 306 -10 -64 6 30 -64 57 9 -64 5 3 -64 58 38 1.01 137 0 0 -64 38 35 18 7 31.7 19 305 -10 -64 13 24 -65 3 57 -64 11 57 -65 5 25 1.01 138 0 0 -64 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-66 40 30 1.02 163 0 0 -66 15 33 18 6 56.8 8 280 0 -65 51 14 -66 40 2 -65 49 49 -66 41 27 1.02 164 0 0 -66 16 17 18 6 56.0 8 280 1 -65 51 59 -66 40 46 -65 50 35 -66 42 12 1.02 165 0 0 -66 16 49 18 6 55.3 8 279 1 -65 52 32 -66 41 18 -65 51 7 -66 42 43 1.02 166 0 0 -66 17 9 18 6 54.6 7 278 1 -65 52 51 -66 41 36 -65 51 27 -66 43 2 1.02 167 0 0 -66 17 15 18 6 53.9 7 277 2 -65 52 57 -66 41 42 -65 51 33 -66 43 8 1.03 168 0 0 -66 17 8 18 6 53.3 6 276 2 -65 52 51 -66 41 36 -65 51 27 -66 43 1 1.03 169 0 0 -66 16 49 18 6 52.7 6 275 2 -65 52 31 -66 41 16 -65 51 7 -66 42 42 1.03 170 0 0 -66 16 16 18 6 52.1 6 274 3 -65 51 59 -66 40 44 -65 50 34 -66 42 9 1.03 171 0 0 -66 15 31 18 6 51.6 5 273 3 -65 51 13 -66 39 59 -65 49 49 -66 41 24 1.04 172 0 0 -66 14 32 18 6 51.1 5 272 4 -65 50 14 -66 39 1 -65 48 50 -66 40 26 1.04 173 0 0 -66 13 21 18 6 50.7 4 271 4 -65 49 2 -66 37 50 -65 47 38 -66 39 15 1.05 174 0 0 -66 11 56 18 6 50.3 4 270 4 -65 47 37 -66 36 26 -65 46 13 -66 37 52 1.05 175 0 0 -66 10 19 18 6 49.9 4 270 5 -65 45 59 -66 34 49 -65 44 35 -66 36 15 1.06 176 0 0 -66 8 28 18 6 49.6 3 269 5 -65 44 8 -66 33 0 -65 42 43 -66 34 25 1.07 177 0 0 -66 6 25 18 6 49.3 3 268 6 -65 42 3 -66 30 57 -65 40 39 -66 32 23 1.08 178 0 0 -66 4 8 18 6 49.1 2 267 6 -65 39 45 -66 28 41 -65 38 21 -66 30 7 1.10 179 0 0 -66 1 38 18 6 48.8 2 266 6 -65 37 14 -66 26 12 -65 35 49 -66 27 38 1.12 180 0 0 -65 58 54 18 6 48.7 2 265 7 -65 34 29 -66 23 30 -65 33 4 -66 24 56 1.15 -179 0 0 -65 55 58 18 6 48.5 1 264 7 -65 31 31 -66 20 35 -65 30 6 -66 22 1 1.21 -178 0 0 -65 52 47 18 6 48.4 1 263 8 -65 28 19 -66 17 26 -65 26 54 -66 18 52 1.34 -177 0 0 -65 49 23 18 6 48.4 0 262 8 -65 24 54 -66 14 4 -65 23 29 -66 15 30 1.79 Uncertainty in time = +/- 3 secs Prediction of 2022 Feb 14.8 Data for the target star ------------------------ * name: TYC 4908-00183-1 * constellation : Sextans * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 20 03.0000 DE: -03 22 43.685 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 20 02.9999 DE: -03 22 43.685 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.200) * V mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (441) Bathilde asteroid class: approx. diameter [km]: 64 approx. diameter ["]: 0.052 distance from Earth [AU]: 1.71110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#62 date of fit: 2022 Feb 04 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.032", 0.001", 112.637° remarks: * orbital elements for (441)Bathilde : Mean anomaly = 53.9897715208 deg Arg. of pericenter = 202.9465422534 deg Long. of node = 253.5154152859 deg Inclination = 8.1569991622 deg Eccentricity = 0.0812441403 Semimajor axis = 2.8068397235 AU Perihelion dist = 2.5788004433 AU Mag: H = 8.60, G = 0.15 Epoch of elements : MJD 59637.75923611 TDT (2022 Feb 27.7592) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#622022Feb04,5.54,2022,2,27,18.221645,-0.251744,-0.657535,-6.094125,2.333882,0.000528,0.001192,0.000002,-0.000001 84.4136,-3.4909,-90.16,-8.15,False TYC 4908-00183-1,10.33416665,-3.3788014,0.00,11.43,0.00,0.0,0,,10.35302031,-3.4909345,1.29,0.00,0,0,0 441,Bathilde,12.33,64.0,1.7111,0,0,-2.091,12.00,,3.4 0,53.8306,2022,2,27,202.9465,253.5154,8.1570,0.08124,2.80684,2.57880,8.61,5.0,0.15 1.029,0.0323,0.0012,113,0.0015,Known errors,-1.00,-1,-1,-1 20220227_0183-1,59624.80 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Feb 14, 19:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org