IOTA/IOTA-ES occultation update for (471) Papagena / UCAC4 292-165178 event on 2024 Sep 16, 23:36 UT Visible from Summary ------- On 2024 Sep 16 UT, the 126.910560103381 km diameter asteroid (471) Papagena will occult a 11.2 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.32 mag to 12.12 mag (the magnitude of the asteroid) for at most 12.730 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 Sep 16, 23:26 - 2024 Sep 16, 23:46 * geocentric midpoint of event [JD]: 2460570.48371716 * magnitude of target star: 11.18 * magnitude drop [mag]: 1.32 * estimated maximum duration [s]: 12.730 * Moon: 98 % sunlit, 65° distance * Sun: 98° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 136 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 3.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.014) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.013", 109°) * approx speed of asteroid's shadow [km/s]: 9.9863 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 292-165178 by 471 Papagena on 2024 Sep 16 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 -175 0 0 -16 57 56 23 26 35.5 0 123 71 -17 42 35 .. .. .. -18 1 35 .. .. .. .... -174 0 0 -17 36 4 23 26 35.7 1 123 70 -18 20 48 -16 51 36 -18 39 50 -16 32 51 0.37 -173 0 0 -18 14 18 23 26 36.2 2 123 70 -18 59 7 -17 29 45 -19 18 11 -17 10 58 0.39 -172 0 0 -18 52 37 23 26 36.9 4 122 69 -19 37 30 -18 8 0 -19 56 36 -17 49 11 0.39 -171 0 0 -19 30 58 23 26 37.9 5 122 68 -20 15 56 -18 46 17 -20 35 3 -18 27 27 0.40 -170 0 0 -20 9 21 23 26 39.2 6 122 68 -20 54 23 -19 24 37 -21 13 32 -19 5 45 0.40 -169 0 0 -20 47 45 23 26 40.7 7 121 67 -21 32 50 -20 2 57 -21 52 0 -19 44 4 0.40 -168 0 0 -21 26 8 23 26 42.5 8 121 66 -22 11 15 -20 41 17 -22 30 27 -20 22 23 0.40 -167 0 0 -22 4 28 23 26 44.6 9 121 65 -22 49 38 -21 19 35 -23 8 51 -21 0 39 0.40 -166 0 0 -22 42 44 23 26 46.9 10 120 64 -23 27 56 -21 57 49 -23 47 10 -21 38 53 0.40 -165 0 0 -23 20 56 23 26 49.5 12 120 63 -24 6 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7 239 -66 -22 57 7 -21 27 7 -23 16 19 -21 8 12 0.46 17 0 0 -21 33 44 23 46 26.8 6 238 -66 -22 18 50 -20 48 55 -22 38 1 -20 30 1 0.47 18 0 0 -20 55 27 23 46 28.1 5 238 -66 -21 40 30 -20 10 41 -21 59 40 -19 51 48 0.49 19 0 0 -20 17 9 23 46 29.2 4 237 -65 -21 2 9 -19 32 26 -21 21 17 -19 13 34 0.52 20 0 0 -19 38 51 23 46 29.9 3 237 -65 -20 23 47 -18 54 11 -20 42 54 -18 35 21 0.57 21 0 0 -19 0 34 23 46 30.4 1 237 -65 -19 45 27 -18 15 58 -20 4 32 -17 57 10 0.69 22 0 0 -18 22 21 23 46 30.7 0 236 -65 -19 7 9 .. .. .. -19 26 12 .. .. .. 1.71 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 292-165178 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 13 02.7293 DE: -31 46 14.679 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 13 02.7292 DE: -31 46 14.679 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (471) Papagena asteroid class: approx. diameter [km]: 127 approx. diameter ["]: 0.067 distance from Earth [AU]: 2.59820 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#122 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): 0.021", 0.013", 109.053° remarks: * orbital elements for (471)Papagena : Mean anomaly = 280.4070702941 deg Arg. of pericenter = 315.8217860552 deg Long. of node = 83.7722076029 deg Inclination = 15.0190410740 deg Eccentricity = 0.2291046436 Semimajor axis = 2.8893021074 AU Perihelion dist = 2.2273495777 AU Mag: H = 6.71, G = 0.37 Epoch of elements : MJD 60569.98371696 TDT (2024 Sep 16.9837) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1222023Apr24,12.73,2024,9,16,23.609212,-0.004877,-0.352087,5.636029,-0.076945,0.005617,0.000267,0.000000,0.000000 -76.8792,-31.7659,-175.51,2.15,False UCAC4 292-165178,18.21742483,-31.7707441,11.82,11.18,10.83,0.1,0,,18.24422844,-31.7659309,1.32,1.25,0,0,0 471,Papagena,12.12,127.099,2.5982,0,0,1.496,-0.26,,6.6,0 0,280.2097,2024,9,16,315.8218,83.7722,15.0190,0.22910,2.88930,2.22735,6.72,5.0,0.15 1.212,0.0210,0.0133,109,0.0143,Known errors,0.60,0,-1,-1 20240916_165178,60140.57 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:36 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org