IOTA/IOTA-ES occultation update for (544) Jetta / UCAC4 326-081759 event on 2024 Oct 02, 21:26 UT Visible from Summary ------- On 2024 Oct 02 UT, the 27.857 km diameter asteroid (544) Jetta will occult a 12.0 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.00 mag to 14.89 mag (the magnitude of the asteroid) for at most 0.770 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: 99 * date and approx. time of event: 2024 Oct 02, 21:23 - 2024 Oct 02, 21:29 * geocentric midpoint of event [JD]: 2460586.39333005 * magnitude of target star: 11.96 * magnitude drop [mag]: 3.00 * estimated maximum duration [s]: 0.770 * Moon: 0 % sunlit, 56° distance * Sun: 57° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 29 * 1 sigma uncertainty interval [path widths]: +/- 0.18 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.003", 96°) * approx speed of asteroid's shadow [km/s]: 36.3354 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 326-081759 by 544 Jetta on 2024 Oct 2 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 -170 0 0 16 8 46 21 23 33.6 0 116 57 16 0 7 16 17 26 15 56 58 16 20 35 .... -169 0 0 15 40 21 21 23 33.6 1 116 58 15 31 42 15 49 1 15 28 33 15 52 10 -0.04 -168 0 0 15 11 52 21 23 33.8 3 117 59 15 3 12 15 20 32 15 0 4 15 23 41 -0.13 -167 0 0 14 43 19 21 23 33.9 4 117 60 14 34 39 14 51 59 14 31 31 14 55 8 -0.17 -166 0 0 14 14 43 21 23 34.2 5 117 61 14 6 4 14 23 23 14 2 55 14 26 32 -0.18 -165 0 0 13 46 5 21 23 34.5 6 117 62 13 37 26 13 54 45 13 34 17 13 57 54 -0.20 -164 0 0 13 17 26 21 23 34.9 7 118 63 13 8 47 13 26 6 13 5 38 13 29 14 -0.20 -163 0 0 12 48 46 21 23 35.3 8 118 64 12 40 7 12 57 26 12 36 59 13 0 34 -0.21 -162 0 0 12 20 7 21 23 35.8 9 118 66 12 11 28 12 28 46 12 8 19 12 31 55 -0.21 -161 0 0 11 51 28 21 23 36.4 10 118 67 11 42 50 12 0 7 11 39 41 12 3 16 -0.22 -160 0 0 11 22 51 21 23 37.0 11 119 68 11 14 13 11 31 30 11 11 5 11 34 39 -0.22 -159 0 0 10 54 17 21 23 37.7 12 119 69 10 45 39 11 2 56 10 42 31 11 6 4 -0.22 -158 0 0 10 25 47 21 23 38.5 13 119 70 10 17 9 10 34 25 10 14 1 10 37 33 -0.22 -157 0 0 9 57 20 21 23 39.3 14 119 71 9 48 43 10 5 58 9 45 35 10 9 6 -0.23 -156 0 0 9 28 59 21 23 40.2 16 119 72 9 20 22 9 37 36 9 17 14 9 40 44 -0.23 -155 0 0 9 0 43 21 23 41.2 17 120 73 8 52 6 9 9 19 8 48 59 9 12 27 -0.23 -154 0 0 8 32 33 21 23 42.2 18 120 74 8 23 57 8 41 10 8 20 50 8 44 17 -0.23 -153 0 0 8 4 31 21 23 43.3 19 120 75 7 55 56 8 13 7 7 52 49 8 16 14 -0.23 -152 0 0 7 36 37 21 23 44.4 20 120 76 7 28 2 7 45 12 7 24 55 7 48 19 -0.23 -151 0 0 7 8 52 21 23 45.6 21 120 77 7 0 17 7 17 26 6 57 11 7 20 33 -0.23 -150 0 0 6 41 16 21 23 46.9 22 120 78 6 32 42 6 49 50 6 29 35 6 52 56 -0.23 -149 0 0 6 13 50 21 23 48.2 23 121 78 6 5 17 6 22 23 6 2 11 6 25 30 -0.23 -148 0 0 5 46 35 21 23 49.6 24 121 79 5 38 3 5 55 8 5 34 57 5 58 14 -0.24 -147 0 0 5 19 32 21 23 51.1 25 121 80 5 11 0 5 28 4 5 7 54 5 31 10 -0.24 -146 0 0 4 52 41 21 23 52.6 26 121 81 4 44 10 5 1 12 4 41 5 5 4 18 -0.24 -145 0 0 4 26 3 21 23 54.2 28 121 81 4 17 33 4 34 34 4 14 28 4 37 39 -0.24 -144 0 0 3 59 39 21 23 55.8 29 121 82 3 51 10 4 8 9 3 48 5 4 11 14 -0.24 -143 0 0 3 33 29 21 23 57.5 30 121 82 3 25 0 3 41 58 3 21 56 3 45 3 -0.24 -142 0 0 3 7 34 21 23 59.2 31 122 83 2 59 6 3 16 2 2 56 2 3 19 7 -0.24 -141 0 0 2 41 55 21 24 1.0 32 122 83 2 33 28 2 50 22 2 30 23 2 53 26 -0.24 -140 0 0 2 16 31 21 24 2.9 33 122 83 2 8 5 2 24 58 2 5 1 2 28 2 -0.24 -139 0 0 1 51 25 21 24 4.8 34 122 82 1 42 59 1 59 50 1 39 56 2 2 54 -0.24 -138 0 0 1 26 36 21 24 6.7 35 122 82 1 18 11 1 35 0 1 15 8 1 38 4 -0.24 -137 0 0 1 2 4 21 24 8.7 36 122 82 0 53 41 1 10 28 0 50 38 1 13 31 -0.24 -136 0 0 0 37 51 21 24 10.8 37 123 81 0 29 28 0 46 14 0 26 26 0 49 17 -0.24 -135 0 0 0 13 57 21 24 12.9 38 123 80 0 5 35 0 22 19 0 2 33 0 25 22 -0.24 -134 0 0 - 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62 0 0 - 9 56 38 21 27 40.0 60 236 8 -10 4 30 - 9 48 46 -10 7 21 - 9 45 54 -0.25 - 61 0 0 - 9 48 5 21 27 42.8 59 237 7 - 9 55 58 - 9 40 13 - 9 58 49 - 9 37 21 -0.25 - 60 0 0 - 9 39 6 21 27 45.5 58 237 6 - 9 46 58 - 9 31 13 - 9 49 50 - 9 28 21 -0.25 - 59 0 0 - 9 29 38 21 27 48.2 57 238 5 - 9 37 31 - 9 21 45 - 9 40 23 - 9 18 53 -0.25 - 58 0 0 - 9 19 43 21 27 50.9 56 238 4 - 9 27 37 - 9 11 49 - 9 30 29 - 9 8 57 -0.25 - 57 0 0 - 9 9 21 21 27 53.5 56 239 3 - 9 17 16 - 9 1 27 - 9 20 8 - 8 58 34 -0.25 - 56 0 0 - 8 58 32 21 27 56.1 55 239 2 - 9 6 27 - 8 50 37 - 9 9 20 - 8 47 44 -0.25 - 55 0 0 - 8 47 16 21 27 58.7 54 239 1 - 8 55 11 - 8 39 20 - 8 58 4 - 8 36 27 -0.25 - 54 0 0 - 8 35 32 21 28 1.3 53 240 0 - 8 43 29 - 8 27 36 - 8 46 22 - 8 24 42 -0.25 - 53 0 0 - 8 23 22 21 28 3.8 52 240 -1 - 8 31 19 - 8 15 25 - 8 34 12 - 8 12 31 -0.25 - 52 0 0 - 8 10 45 21 28 6.4 51 240 -2 - 8 18 42 - 8 2 47 - 8 21 36 - 7 59 53 -0.25 - 51 0 0 - 7 57 41 21 28 8.8 50 240 -3 - 8 5 39 - 7 49 42 - 8 8 33 - 7 46 48 -0.25 - 50 0 0 - 7 44 10 21 28 11.3 49 241 -4 - 7 52 9 - 7 36 11 - 7 55 3 - 7 33 16 -0.25 - 49 0 0 - 7 30 13 21 28 13.7 48 241 -5 - 7 38 13 - 7 22 13 - 7 41 7 - 7 19 18 -0.25 - 48 0 0 - 7 15 49 21 28 16.1 47 241 -6 - 7 23 50 - 7 7 48 - 7 26 45 - 7 4 53 -0.25 - 47 0 0 - 7 1 0 21 28 18.5 46 241 -7 - 7 9 1 - 6 52 58 - 7 11 56 - 6 50 3 -0.25 - 46 0 0 - 6 45 44 21 28 20.8 45 241 -8 - 6 53 46 - 6 37 41 - 6 56 41 - 6 34 46 -0.25 - 45 0 0 - 6 30 2 21 28 23.1 44 241 -9 - 6 38 5 - 6 21 58 - 6 41 1 - 6 19 3 -0.25 - 44 0 0 - 6 13 54 21 28 25.3 43 241 -10 - 6 21 58 - 6 5 50 - 6 24 54 - 6 2 54 -0.25 - 43 0 0 - 5 57 21 21 28 27.5 42 242 -11 - 6 5 26 - 5 49 16 - 6 8 22 - 5 46 20 -0.25 - 42 0 0 - 5 40 23 21 28 29.7 41 242 -12 - 5 48 29 - 5 32 17 - 5 51 25 - 5 29 20 -0.25 - 41 0 0 - 5 23 0 21 28 31.8 40 242 -13 - 5 31 6 - 5 14 53 - 5 34 3 - 5 11 56 -0.25 - 40 0 0 - 5 5 11 21 28 33.9 39 242 -14 - 5 13 19 - 4 57 3 - 5 16 16 - 4 54 6 -0.25 - 39 0 0 - 4 46 58 21 28 36.0 38 242 -15 - 4 55 6 - 4 38 49 - 4 58 4 - 4 35 52 -0.25 - 38 0 0 - 4 28 20 21 28 38.0 37 242 -16 - 4 36 30 - 4 20 11 - 4 39 27 - 4 17 13 -0.25 - 37 0 0 - 4 9 19 21 28 39.9 36 242 -18 - 4 17 29 - 4 1 8 - 4 20 27 - 3 58 10 -0.25 - 36 0 0 - 3 49 53 21 28 41.9 35 242 -19 - 3 58 4 - 3 41 42 - 4 1 3 - 3 38 43 -0.25 - 35 0 0 - 3 30 4 21 28 43.7 34 242 -20 - 3 38 16 - 3 21 52 - 3 41 15 - 3 18 53 -0.25 - 34 0 0 - 3 9 51 21 28 45.6 32 242 -21 - 3 18 4 - 3 1 38 - 3 21 3 - 2 58 39 -0.25 - 33 0 0 - 2 49 16 21 28 47.3 31 242 -22 - 2 57 30 - 2 41 2 - 3 0 29 - 2 38 2 -0.25 - 32 0 0 - 2 28 18 21 28 49.1 30 242 -23 - 2 36 33 - 2 20 3 - 2 39 33 - 2 17 3 -0.25 - 31 0 0 - 2 6 58 21 28 50.7 29 242 -24 - 2 15 13 - 1 58 42 - 2 18 13 - 1 55 41 -0.25 - 30 0 0 - 1 45 15 21 28 52.4 28 242 -25 - 1 53 32 - 1 36 58 - 1 56 32 - 1 33 58 -0.25 - 29 0 0 - 1 23 12 21 28 53.9 27 242 -26 - 1 31 29 - 1 14 54 - 1 34 30 - 1 11 53 -0.25 - 28 0 0 - 1 0 47 21 28 55.5 26 243 -27 - 1 9 5 - 0 52 28 - 1 12 6 - 0 49 27 -0.25 - 27 0 0 - 0 38 1 21 28 56.9 25 243 -28 - 0 46 21 - 0 29 42 - 0 49 22 - 0 26 40 -0.25 - 26 0 0 - 0 14 56 21 28 58.3 24 243 -29 - 0 23 16 - 0 6 35 - 0 26 18 - 0 3 33 -0.25 - 25 0 0 0 8 30 21 28 59.7 23 243 -30 0 0 9 0 16 52 - 0 2 53 0 19 54 -0.25 - 24 0 0 0 32 15 21 29 1.0 22 243 -31 0 23 53 0 40 37 0 20 50 0 43 40 -0.25 - 23 0 0 0 56 19 21 29 2.2 21 243 -32 0 47 55 1 4 42 0 44 53 1 7 45 -0.25 - 22 0 0 1 20 41 21 29 3.4 20 243 -33 1 12 17 1 29 5 1 9 14 1 32 8 -0.25 - 21 0 0 1 45 20 21 29 4.5 19 243 -34 1 36 56 1 53 46 1 33 52 1 56 49 -0.25 - 20 0 0 2 10 17 21 29 5.6 18 243 -35 2 1 52 2 18 43 1 58 48 2 21 47 -0.25 - 19 0 0 2 35 31 21 29 6.6 16 243 -36 2 27 5 2 43 58 2 24 1 2 47 2 -0.25 - 18 0 0 3 1 1 21 29 7.6 15 243 -37 2 52 34 3 9 29 2 49 30 3 12 33 -0.25 - 17 0 0 3 26 47 21 29 8.4 14 243 -38 3 18 19 3 35 15 3 15 14 3 38 20 -0.25 - 16 0 0 3 52 47 21 29 9.2 13 243 -39 3 44 18 4 1 16 3 41 13 4 4 21 -0.25 - 15 0 0 4 19 2 21 29 10.0 12 243 -40 4 10 32 4 27 32 4 7 27 4 30 37 -0.25 - 14 0 0 4 45 30 21 29 10.7 11 243 -41 4 37 0 4 54 1 4 33 54 4 57 6 -0.25 - 13 0 0 5 12 11 21 29 11.3 10 244 -42 5 3 40 5 20 43 5 0 35 5 23 49 -0.24 - 12 0 0 5 39 5 21 29 11.9 9 244 -43 5 30 33 5 47 37 5 27 27 5 50 43 -0.24 - 11 0 0 6 6 11 21 29 12.4 8 244 -44 5 57 38 6 14 43 5 54 32 6 17 50 -0.24 - 10 0 0 6 33 27 21 29 12.8 7 244 -45 6 24 54 6 42 0 6 21 48 6 45 7 -0.24 - 9 0 0 7 0 54 21 29 13.2 6 244 -46 6 52 20 7 9 28 6 49 13 7 12 35 -0.24 - 8 0 0 7 28 30 21 29 13.5 4 244 -47 7 19 56 7 37 5 7 16 49 7 40 12 -0.24 - 7 0 0 7 56 15 21 29 13.7 3 244 -48 7 47 40 8 4 50 7 44 33 8 7 58 -0.24 - 6 0 0 8 24 9 21 29 13.9 2 244 -49 8 15 33 8 32 44 8 12 26 8 35 52 -0.24 - 5 0 0 8 52 9 21 29 14.0 1 245 -50 8 43 33 9 0 45 8 40 26 9 3 53 -0.23 - 4 0 0 9 20 17 21 29 14.0 0 245 -51 9 11 40 9 28 53 9 8 33 9 32 1 -0.04 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 326-081759 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 17 56.4520 DE: -24 53 16.266 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 17 56.4519 DE: -24 53 16.265 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 12.0 * B mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (544) Jetta asteroid class: approx. diameter [km]: 28 approx. diameter ["]: 0.015 distance from Earth [AU]: 2.57840 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): 0.011", 0.003", 95.76° remarks: * orbital elements for (544)Jetta : Mean anomaly = 351.2710983585 deg Arg. of pericenter = 342.8975004401 deg Long. of node = 298.2775027780 deg Inclination = 8.3683878701 deg Eccentricity = 0.1526228029 Semimajor axis = 2.5923308740 AU Perihelion dist = 2.1966820699 AU Mag: H = 10.05, G = 0.15 Epoch of elements : MJD 60585.89333000 TDT (2024 Oct 02.8933) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#582023Apr24,0.77,2024,10,2,21.439921,0.015823,0.243165,20.463137,-1.366691,0.004507,-0.000958,-0.000001,0.000000 -88.8289,-24.9489,-144.33,-4.03,False UCAC4 326-081759,16.29901449,-24.8878517,12.49,11.96,11.67,0.0,4,K,16.32369665,-24.9488636,3.00,2.85,0,0,0 544,Jetta,14.89,27.857,2.5784,0,0,5.132,-4.66,,1.6,0 0,351.0601,2024,10,2,342.8975,298.2775,8.3684,0.15262,2.59233,2.19668,10.04,5.0,0.15 1.182,0.0110,0.0027,96,0.0027,Known errors,1.59,0,-1,-1 20241002_081759,60140.60 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:31 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org