IOTA/IOTA-ES occultation update for (33) Polyhymnia / HIP 72134 event on 2023 Jun 04, 06:10 UT Visible from South America Summary ------- On 2023 Jun 04 UT, the 51.6 km diameter asteroid (33) Polyhymnia will occult a 8.1 mag star in the constellation Libra for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.99 mag to 13.07 mag (the magnitude of the asteroid) for at most 4.760 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: 2023 Jun 04, 05:59 - 2023 Jun 04, 06:19 * geocentric midpoint of event [JD]: 2460099.75687508 * magnitude of target star: 8.09 * magnitude drop [mag]: 4.99 * estimated maximum duration [s]: 4.760 * Moon: 100 % sunlit, 29° distance * Sun: 151° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 52 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.002", 109°) * approx speed of asteroid's shadow [km/s]: 10.8308 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 72134 by 33 Polyhymnia on 2023 Jun 4 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 153 0 0 22 33 27 6 19 39.4 1 110 27 22 48 28 22 18 27 22 50 12 22 16 43 .... 154 0 0 22 13 7 6 19 39.1 2 110 26 22 28 9 21 58 6 22 29 54 21 56 21 -0.03 155 0 0 21 52 28 6 19 38.7 3 111 25 22 7 32 21 37 25 22 9 17 21 35 41 -0.07 156 0 0 21 31 30 6 19 38.2 4 111 24 21 46 35 21 16 26 21 48 20 21 14 41 -0.08 157 0 0 21 10 14 6 19 37.4 5 111 23 21 25 20 20 55 8 21 27 6 20 53 23 -0.09 158 0 0 20 48 40 6 19 36.5 6 112 22 21 3 47 20 33 32 21 5 33 20 31 47 -0.10 159 0 0 20 26 47 6 19 35.3 7 112 21 20 41 57 20 11 39 20 43 42 20 9 54 -0.11 160 0 0 20 4 38 6 19 34.0 8 113 20 20 19 48 19 49 28 20 21 34 19 47 43 -0.11 161 0 0 19 42 11 6 19 32.5 9 113 19 19 57 23 19 27 0 19 59 9 19 25 14 -0.11 162 0 0 19 19 28 6 19 30.9 10 113 18 19 34 41 19 4 16 19 36 27 19 2 30 -0.12 163 0 0 18 56 29 6 19 29.0 11 114 17 19 11 43 18 41 15 19 13 29 18 39 29 -0.12 164 0 0 18 33 13 6 19 26.9 12 114 16 18 48 29 18 17 59 18 50 15 18 16 13 -0.12 165 0 0 18 9 43 6 19 24.7 13 114 15 18 24 59 17 54 27 18 26 46 17 52 41 -0.12 166 0 0 17 45 57 6 19 22.3 14 114 14 18 1 15 17 30 40 18 3 2 17 28 54 -0.12 167 0 0 17 21 58 6 19 19.6 15 115 13 17 37 16 17 6 39 17 39 3 17 4 53 -0.12 168 0 0 16 57 44 6 19 16.8 16 115 12 17 13 4 16 42 25 17 14 50 16 40 38 -0.12 169 0 0 16 33 17 6 19 13.8 17 115 11 16 48 37 16 17 57 16 50 24 16 16 10 -0.12 170 0 0 16 8 37 6 19 10.6 18 116 10 16 23 58 15 53 15 16 25 45 15 51 29 -0.13 171 0 0 15 43 44 6 19 7.2 19 116 9 15 59 7 15 28 22 16 0 54 15 26 35 -0.13 172 0 0 15 18 40 6 19 3.7 20 116 8 15 34 3 15 3 17 15 35 50 15 1 30 -0.13 173 0 0 14 53 24 6 18 59.9 21 116 7 15 8 48 14 38 0 15 10 35 14 36 13 -0.13 174 0 0 14 27 57 6 18 55.9 22 117 6 14 43 22 14 12 33 14 45 10 14 10 46 -0.13 175 0 0 14 2 21 6 18 51.8 23 117 5 14 17 46 13 46 56 14 19 34 13 45 8 -0.13 176 0 0 13 36 34 6 18 47.4 24 117 4 13 52 1 13 21 9 13 53 48 13 19 21 -0.13 177 0 0 13 10 39 6 18 42.9 25 118 3 13 26 6 12 55 13 13 27 53 12 53 25 -0.13 178 0 0 12 44 35 6 18 38.2 26 118 2 13 0 3 12 29 8 13 1 50 12 27 21 -0.13 179 0 0 12 18 23 6 18 33.3 27 118 1 12 33 51 12 2 56 12 35 39 12 1 8 -0.13 -180 0 0 11 52 4 6 18 28.2 28 118 0 12 7 33 11 36 37 12 9 20 11 34 49 -0.13 -179 0 0 11 25 39 6 18 23.0 29 119 -1 11 41 8 11 10 11 11 42 55 11 8 23 -0.13 -178 0 0 10 59 7 6 18 17.5 30 119 -2 11 14 36 10 43 39 11 16 24 10 41 51 -0.13 -177 0 0 10 32 30 6 18 11.9 32 119 -3 10 48 0 10 17 1 10 49 47 10 15 14 -0.13 -176 0 0 10 5 48 6 18 6.1 33 119 -4 10 21 18 9 50 19 10 23 6 9 48 32 -0.13 -175 0 0 9 39 3 6 18 0.1 34 119 -5 9 54 32 9 23 33 9 56 20 9 21 46 -0.13 -174 0 0 9 12 13 6 17 53.9 35 120 -6 9 27 43 8 56 44 9 29 31 8 54 56 -0.13 -173 0 0 8 45 21 6 17 47.6 36 120 -7 9 0 51 8 29 52 9 2 39 8 28 4 -0.13 -172 0 0 8 18 27 6 17 41.1 37 120 -9 8 33 57 8 2 58 8 35 45 8 1 10 -0.13 -171 0 0 7 51 31 6 17 34.4 38 120 -10 8 7 1 7 36 2 8 8 49 7 34 14 -0.13 -170 0 0 7 24 34 6 17 27.6 39 120 -11 7 40 4 7 9 5 7 41 52 7 7 18 -0.13 -169 0 0 6 57 37 6 17 20.6 40 121 -12 7 13 7 6 42 9 7 14 55 6 40 21 -0.13 -168 0 0 6 30 41 6 17 13.5 41 121 -13 6 46 10 6 15 12 6 47 58 6 13 25 -0.13 -167 0 0 6 3 45 6 17 6.2 42 121 -14 6 19 14 5 48 17 6 21 2 5 46 29 -0.13 -166 0 0 5 36 52 6 16 58.8 43 121 -15 5 52 20 5 21 24 5 54 8 5 19 36 -0.13 -165 0 0 5 10 0 6 16 51.2 44 122 -16 5 25 28 4 54 33 5 27 16 4 52 45 -0.13 -164 0 0 4 43 12 6 16 43.4 45 122 -17 4 58 39 4 27 44 5 0 27 4 25 57 -0.13 -163 0 0 4 16 27 6 16 35.6 46 122 -18 4 31 54 4 1 0 4 33 42 3 59 13 -0.13 -162 0 0 3 49 46 6 16 27.6 47 122 -19 4 5 13 3 34 20 4 7 0 3 32 33 -0.13 -161 0 0 3 23 10 6 16 19.4 48 122 -20 3 38 36 3 7 45 3 40 24 3 5 57 -0.13 -160 0 0 2 56 40 6 16 11.1 49 123 -21 3 12 5 2 41 15 3 13 53 2 39 28 -0.13 -159 0 0 2 30 15 6 16 2.8 51 123 -22 2 45 40 2 14 51 2 47 28 2 13 4 -0.13 -158 0 0 2 3 58 6 15 54.2 52 123 -23 2 19 22 1 48 34 2 21 9 1 46 47 -0.13 -157 0 0 1 37 47 6 15 45.6 53 123 -24 1 53 10 1 22 24 1 54 58 1 20 37 -0.13 -156 0 0 1 11 44 6 15 36.9 54 124 -26 1 27 7 0 56 22 1 28 54 0 54 36 -0.13 -155 0 0 0 45 50 6 15 28.0 55 124 -27 1 1 12 0 30 29 1 2 59 0 28 42 -0.13 -154 0 0 0 20 5 6 15 19.1 56 124 -28 0 35 25 0 4 44 0 37 12 0 2 58 -0.13 -153 0 0 - 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35 0 0 -11 56 36 6 0 15.7 8 253 -36 -11 41 55 -12 11 16 -11 40 12 -12 12 58 -0.13 - 34 0 0 -11 39 28 6 0 14.4 7 253 -35 -11 24 45 -11 54 10 -11 23 3 -11 55 52 -0.13 - 33 0 0 -11 21 57 6 0 13.3 6 253 -34 -11 7 13 -11 36 41 -11 5 30 -11 38 23 -0.13 - 32 0 0 -11 4 2 6 0 12.4 5 252 -33 -10 49 16 -11 18 48 -10 47 34 -11 20 30 -0.13 - 31 0 0 -10 45 44 6 0 11.7 3 252 -32 -10 30 57 -11 0 31 -10 29 14 -11 2 14 -0.12 - 30 0 0 -10 27 4 6 0 11.1 2 252 -31 -10 12 14 -10 41 52 -10 10 31 -10 43 35 -0.12 - 29 0 0 -10 8 0 6 0 10.7 1 252 -30 - 9 53 9 -10 22 50 - 9 51 26 -10 24 33 -0.11 - 28 0 0 - 9 48 33 6 0 10.6 0 252 -29 - 9 33 41 -10 3 25 - 9 31 57 -10 5 8 -0.03 Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: HIP 72134 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 45 18.4482 DE: -18 00 12.033 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 45 18.4477 DE: -18 00 12.031 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 8.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (33) Polyhymnia asteroid class: approx. diameter [km]: 52 approx. diameter ["]: 0.035 distance from Earth [AU]: 2.00950 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#64 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): 0.024", 0.002", 109.261° remarks: * orbital elements for (33)Polyhymnia : Mean anomaly = 285.0017241206 deg Arg. of pericenter = 338.5693370266 deg Long. of node = 8.4411393292 deg Inclination = 1.8522999270 deg Eccentricity = 0.3317156978 Semimajor axis = 2.8737168005 AU Perihelion dist = 1.9204598267 AU Mag: H = 8.54, G = 0.33 Epoch of elements : MJD 60099.25701389 TDT (2023 Jun 04.2570) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#642023Apr24,4.76,2023,6,4,6.165002,0.036973,0.114476,-5.844821,1.791551,0.002606,-0.000636,0.000001,0.000000 -123.2499,-18.1031,87.10,22.41,False HIP 72134,14.75512452,-18.0033424,0.00,8.09,0.00,0.0,0,,14.77712216,-18.1030828,4.99,0.00,0,0,0 33,Polyhymnia,13.07,51.6,2.0095,0,0,-1.793,7.84,,3.4,0 0,284.9497,2023,6,4,338.5693,8.4411,1.8523,0.33172,2.87372,1.92046,8.58,5.0,0.15 1.058,0.0240,0.0018,109,0.0021,Known errors,-1.00,-1,-1,-1 20230604__72134,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org