IOTA/IOTA-ES occultation update for (544) Jetta / TYC 6720-00824-1 event on 2024 Jun 05, 15:22 UT Visible from Summary ------- On 2024 Jun 05 UT, the 27.823 km diameter asteroid (544) Jetta will occult a 11.8 mag star in the constellation Hydra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.95 mag to 13.53 mag (the magnitude of the asteroid) for at most 5.260 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: 91 * date and approx. time of event: 2024 Jun 05, 15:01 - 2024 Jun 05, 15:42 * geocentric midpoint of event [JD]: 2460467.14051542 * magnitude of target star: 11.78 * magnitude drop [mag]: 1.95 * estimated maximum duration [s]: 5.260 * Moon: 1 % sunlit, 152° distance * Sun: 139° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 0.51 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.005", 113°) * approx speed of asteroid's shadow [km/s]: 5.2907 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6720-00824-1 by 544 Jetta on 2024 Jun 5 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 35 0 1 56 14 8 15 42 23.3 0 141 18 56 26 1 56 2 16 56 38 13 55 50 4 .... 36 0 1 55 32 15 15 42 23.0 1 142 17 55 44 20 55 20 10 55 56 44 55 7 47 0.06 37 0 0 54 48 24 15 42 22.4 2 142 17 55 0 42 54 36 7 55 13 19 54 23 31 0.01 38 0 0 54 2 31 15 42 21.5 3 143 16 54 15 1 53 50 1 54 27 51 53 37 11 -0.01 39 0 0 53 14 28 15 42 20.2 4 144 15 53 27 11 53 1 45 53 40 15 52 48 42 -0.02 40 0 0 52 24 10 15 42 18.4 5 145 14 52 37 7 52 11 14 52 50 25 51 57 57 -0.03 41 0 0 51 31 31 15 42 16.2 6 146 13 51 44 42 51 18 21 51 58 14 51 4 50 -0.04 42 0 0 50 36 25 15 42 13.5 7 146 12 50 49 50 50 23 0 51 3 36 50 9 15 -0.04 43 0 0 49 38 44 15 42 10.1 9 147 12 49 52 24 49 25 5 50 6 25 49 11 5 -0.05 44 0 0 48 38 24 15 42 6.2 10 148 11 48 52 17 48 24 30 49 6 34 48 10 15 -0.05 45 0 0 47 35 17 15 42 1.5 11 149 10 47 49 25 47 21 9 48 3 57 47 6 39 -0.05 46 0 0 46 29 17 15 41 56.1 12 149 8 46 43 40 46 14 54 46 58 27 46 0 9 -0.06 47 0 0 45 20 19 15 41 49.8 14 150 7 45 34 57 45 5 41 45 49 59 44 50 41 -0.06 48 0 0 44 8 17 15 41 42.7 15 151 6 44 23 10 43 53 24 44 38 27 43 38 9 -0.06 49 0 0 42 53 6 15 41 34.6 16 151 5 43 8 14 42 37 59 43 23 46 42 22 28 -0.06 50 0 0 41 34 42 15 41 25.4 18 152 4 41 50 4 41 19 20 42 5 52 41 3 35 -0.06 51 0 0 40 13 1 15 41 15.0 20 153 3 40 28 37 39 57 25 40 44 40 39 41 25 -0.07 52 0 0 38 48 0 15 41 3.5 21 153 1 39 3 51 38 32 11 39 20 8 38 15 57 -0.07 53 0 0 37 19 39 15 40 50.6 23 154 0 37 35 43 37 3 36 37 52 14 36 47 9 -0.07 54 0 0 35 47 57 15 40 36.3 24 154 -2 36 4 14 35 31 41 36 20 58 35 15 1 -0.07 55 0 0 34 12 55 15 40 20.6 26 155 -3 34 29 24 33 56 27 34 46 21 33 39 34 -0.07 56 0 0 32 34 36 15 40 3.3 28 155 -4 32 51 16 32 17 56 33 8 24 32 0 52 -0.07 57 0 0 30 53 3 15 39 44.5 30 156 -6 31 9 54 30 36 13 31 27 13 30 18 58 -0.07 58 0 0 29 8 23 15 39 23.9 32 156 -8 29 25 24 28 51 24 29 42 53 28 33 59 -0.07 59 0 0 27 20 44 15 39 1.7 34 157 -9 27 37 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46 -62 42 32 -62 15 39 -62 51 39 -0.03 -154 59 59 -62 15 39 15 2 41.2 11 236 -29 -62 6 40 -62 24 37 -61 57 27 -62 33 50 -0.03 -153 59 59 -61 56 49 15 2 39.0 11 235 -28 -61 47 45 -62 5 54 -61 38 27 -62 15 12 -0.03 -152 59 59 -61 37 9 15 2 36.8 10 234 -28 -61 27 59 -61 46 19 -61 18 35 -61 55 44 -0.03 -151 59 59 -61 16 37 15 2 34.8 9 234 -27 -61 7 20 -61 25 53 -60 57 49 -61 35 24 -0.03 -150 59 59 -60 55 9 15 2 32.8 9 233 -27 -60 45 46 -61 4 31 -60 36 8 -61 14 9 -0.03 -149 59 59 -60 32 43 15 2 30.8 8 232 -26 -60 23 14 -60 42 13 -60 13 29 -60 51 57 -0.03 -148 59 59 -60 9 18 15 2 29.0 8 231 -26 -59 59 41 -60 18 54 -59 49 49 -60 28 46 -0.03 -147 59 59 -59 44 49 15 2 27.3 7 230 -25 -59 35 5 -59 54 33 -59 25 6 -60 4 32 -0.03 -146 59 59 -59 19 15 15 2 25.7 6 229 -25 -59 9 23 -59 29 6 -58 59 16 -59 39 13 -0.03 -145 59 59 -58 52 31 15 2 24.2 6 228 -24 -58 42 32 -59 2 31 -58 32 16 -59 12 46 -0.03 -144 59 59 -58 24 36 15 2 22.8 5 228 -24 -58 14 28 -58 34 43 -58 4 4 -58 45 7 -0.03 -143 59 59 -57 55 24 15 2 21.6 4 227 -23 -57 45 7 -58 5 40 -57 34 34 -58 16 13 -0.03 -142 59 59 -57 24 52 15 2 20.6 3 226 -23 -57 14 27 -57 35 18 -57 3 44 -57 46 0 -0.02 -141 59 59 -56 52 57 15 2 19.7 3 225 -22 -56 42 22 -57 3 32 -56 31 30 -57 14 23 -0.02 -140 59 59 -56 19 33 15 2 19.0 2 224 -21 -56 8 48 -56 30 18 -55 57 46 -56 41 20 0.00 -140 0 0 -55 44 36 15 2 18.6 1 223 -21 -55 33 41 -55 55 31 -55 22 28 -56 6 44 0.04 -139 0 0 -55 8 1 15 2 18.3 0 223 -20 -54 56 55 -55 19 7 .. .. .. -55 30 31 0.45 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: TYC 6720-00824-1 * constellation : Hydra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 56 28.3109 DE: -25 04 39.292 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 56 28.3108 DE: -25 04 39.292 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.8 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (544) Jetta asteroid class: approx. diameter [km]: 28 approx. diameter ["]: 0.027 distance from Earth [AU]: 1.43650 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#58 date of fit: 2023 Apr 24 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): 0.019", 0.005", 112.7° remarks: * orbital elements for (544)Jetta : Mean anomaly = 323.1011707681 deg Arg. of pericenter = 342.9106329248 deg Long. of node = 298.2799790781 deg Inclination = 8.3680760255 deg Eccentricity = 0.1526590254 Semimajor axis = 2.5923789959 AU Perihelion dist = 2.1966289449 AU Mag: H = 10.05, G = 0.15 Epoch of elements : MJD 60466.64051537 TDT (2024 Jun 05.6405) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#582023Apr24,5.26,2024,6,5,15.372370,0.019224,0.008552,-1.223435,2.724128,0.003493,-0.000373,0.000001,-0.000001 84.3349,-25.1992,-50.92,22.64,False TYC 6720-00824-1,13.94119749,-25.0775813,12.07,11.78,11.62,0.0,0,,13.96428057,-25.1991518,1.95,1.71,0,0,0 544,Jetta,13.53,27.823,1.4365,0,0,-0.550,16.67,,1.6,0 0,322.9499,2024,6,5,342.9106,298.2800,8.3681,0.15266,2.59238,2.19663,10.04,5.0,0.15 1.513,0.0193,0.0050,113,0.0137,Known errors,1.03,0,-1,-1 20240605_0824-1,60139.37 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 08:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org