IOTA/IOTA-ES occultation update for (9562) Memling / HIP 73880 event on 2024 Jan 04, 07:19 UT Visible from Summary ------- On 2024 Jan 04 UT, the 17.7969859971347 km diameter asteroid (9562) Memling will occult a 8.9 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.96 mag to 18.84 mag (the magnitude of the asteroid) for at most 0.540 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: 99 * date and approx. time of event: 2024 Jan 04, 07:16 - 2024 Jan 04, 07:22 * geocentric midpoint of event [JD]: 2460313.80511354 * magnitude of target star: 8.88 * magnitude drop [mag]: 9.96 * estimated maximum duration [s]: 0.540 * Moon: 49 % sunlit, 34° distance * Sun: 55° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.18 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 107°) * approx speed of asteroid's shadow [km/s]: 33.7539 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 73880 by 9562 Memling on 2024 Jan 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 - 72 0 0 11 12 14 7 16 13.0 1 105 -54 11 7 10 11 17 18 11 5 20 11 19 8 .... - 71 0 0 10 56 26 7 16 13.1 2 105 -53 10 51 22 11 1 31 10 49 32 11 3 21 0.09 - 70 0 0 10 40 22 7 16 13.2 3 105 -52 10 35 17 10 45 27 10 33 27 10 47 17 0.07 - 69 0 0 10 24 2 7 16 13.4 4 105 -51 10 18 56 10 29 7 10 17 6 10 30 57 0.06 - 68 0 0 10 7 25 7 16 13.7 5 106 -50 10 2 20 10 12 31 10 0 29 10 14 21 0.06 - 67 0 0 9 50 33 7 16 14.0 6 106 -49 9 45 27 9 55 39 9 43 36 9 57 30 0.06 - 66 0 0 9 33 25 7 16 14.4 7 106 -48 9 28 19 9 38 32 9 26 28 9 40 22 0.06 - 65 0 0 9 16 2 7 16 14.8 8 106 -47 9 10 56 9 21 9 9 9 5 9 23 0 0.06 - 64 0 0 8 58 24 7 16 15.3 9 106 -46 8 53 17 9 3 31 8 51 26 9 5 22 0.05 - 63 0 0 8 40 32 7 16 15.8 10 106 -45 8 35 24 8 45 39 8 33 33 8 47 30 0.05 - 62 0 0 8 22 25 7 16 16.5 11 106 -44 8 17 17 8 27 32 8 15 26 8 29 24 0.05 - 61 0 0 8 4 4 7 16 17.1 12 107 -43 7 58 56 8 9 12 7 57 4 8 11 3 0.05 - 60 0 0 7 45 29 7 16 17.9 13 107 -42 7 40 21 7 50 37 7 38 29 7 52 29 0.05 - 59 0 0 7 26 41 7 16 18.7 14 107 -41 7 21 32 7 31 49 7 19 41 7 33 41 0.05 - 58 0 0 7 7 40 7 16 19.6 15 107 -40 7 2 31 7 12 49 7 0 39 7 14 40 0.05 - 57 0 0 6 48 26 7 16 20.5 16 107 -39 6 43 17 6 53 35 6 41 25 6 55 27 0.05 - 56 0 0 6 28 59 7 16 21.5 17 107 -37 6 23 50 6 34 9 6 21 58 6 36 1 0.05 - 55 0 0 6 9 21 7 16 22.5 18 107 -36 6 4 12 6 14 31 6 2 20 6 16 23 0.05 - 54 0 0 5 49 31 7 16 23.7 19 107 -35 5 44 21 5 54 42 5 42 29 5 56 34 0.05 - 53 0 0 5 29 31 7 16 24.8 20 108 -34 5 24 20 5 34 41 5 22 28 5 36 33 0.05 - 52 0 0 5 9 19 7 16 26.1 21 108 -33 5 4 8 5 14 29 5 2 16 5 16 22 0.05 - 51 0 0 4 48 57 7 16 27.4 22 108 -32 4 43 46 4 54 7 4 41 53 4 56 0 0.05 - 50 0 0 4 28 24 7 16 28.7 24 108 -31 4 23 13 4 33 35 4 21 21 4 35 28 0.05 - 49 0 0 4 7 43 7 16 30.2 25 108 -30 4 2 31 4 12 54 4 0 39 4 14 47 0.05 - 48 0 0 3 46 52 7 16 31.7 26 108 -29 3 41 40 3 52 4 3 39 48 3 53 56 0.05 - 47 0 0 3 25 53 7 16 33.2 27 108 -28 3 20 41 3 31 4 3 18 48 3 32 57 0.05 - 46 0 0 3 4 45 7 16 34.8 28 108 -27 2 59 33 3 9 57 2 57 40 3 11 50 0.05 - 45 0 0 2 43 30 7 16 36.5 29 108 -26 2 38 17 2 48 42 2 36 25 2 50 35 0.05 - 44 0 0 2 22 7 7 16 38.2 30 108 -25 2 16 55 2 27 19 2 15 2 2 29 12 0.05 - 43 0 0 2 0 38 7 16 40.0 31 108 -24 1 55 25 2 5 50 1 53 32 2 7 43 0.05 - 42 0 0 1 39 2 7 16 41.8 32 108 -23 1 33 49 1 44 15 1 31 56 1 46 8 0.05 - 41 0 0 1 17 20 7 16 43.8 33 108 -22 1 12 8 1 22 33 1 10 15 1 24 26 0.05 - 40 0 0 0 55 34 7 16 45.7 34 108 -21 0 50 21 1 0 47 0 48 28 1 2 40 0.05 - 39 0 0 0 33 42 7 16 47.7 35 108 -19 0 28 29 0 38 55 0 26 36 0 40 48 0.05 - 38 0 0 0 11 46 7 16 49.8 36 108 -18 0 6 33 0 16 59 0 4 40 0 18 52 0.05 - 37 0 0 - 0 10 14 7 16 51.9 37 108 -17 - 0 15 27 - 0 5 0 - 0 17 20 - 0 3 7 0.05 - 36 0 0 - 0 32 17 7 16 54.1 38 108 -16 - 0 37 30 - 0 27 3 - 0 39 23 - 0 25 10 0.05 - 35 0 0 - 0 54 22 7 16 56.3 40 108 -15 - 0 59 36 - 0 49 9 - 1 1 29 - 0 47 16 0.05 - 34 0 0 - 1 16 30 7 16 58.6 41 108 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Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: HIP 73880 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 06 01.7054 DE: -14 15 23.374 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 06 01.7055 DE: -14 15 23.374 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 8.9 * B mag [mag]: 9.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (9562) Memling asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.007 distance from Earth [AU]: 3.65400 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2023 Apr 25 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): 0.017", 0.001", 106.764° remarks: * orbital elements for (9562)Memling : Mean anomaly = 269.8477208014 deg Arg. of pericenter = 202.6371590963 deg Long. of node = 120.5431186376 deg Inclination = 3.5283431899 deg Eccentricity = 0.1743474473 Semimajor axis = 3.1002814555 AU Perihelion dist = 2.5597552978 AU Mag: H = 12.68, G = 0.15 Epoch of elements : MJD 60313.30511362 TDT (2024 Jan 04.3051) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr25,0.54,2024,1,4,7.322725,-0.009966,-0.040308,18.480961,-4.627978,-0.004700,0.001526,-0.000001,0.000000 13.5844,-14.3488,71.32,-22.76,False HIP 73880,15.10047369,-14.2564925,9.46,8.88,8.57,0.1,0,,15.12228035,-14.3487644,9.96,9.82,0,0,0 9562,Memling,18.84,18.062,3.6540,0,0,3.061,-11.14,,1.8,0 0,269.7926,2024,1,4,202.6372,120.5431,3.5283,0.17435,3.10028,2.55976,12.68,5.0,0.15 1.181,0.0173,0.0009,107,0.0012,Known errors,1.12,0,-1,-1 20240104__73880,60137.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 11, 23:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org