IOTA/IOTA-ES occultation update for (9562) Memling / TYC 6185-00400-1 event on 2024 Feb 06, 18:44 UT Visible from Summary ------- On 2024 Feb 06 UT, the 17.759 km diameter asteroid (9562) Memling will occult a 11.7 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 6.92 mag to 18.60 mag (the magnitude of the asteroid) for at most 0.800 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 Feb 06, 18:39 - 2024 Feb 06, 18:48 * geocentric midpoint of event [JD]: 2460347.28061091 * magnitude of target star: 11.68 * magnitude drop [mag]: 6.92 * estimated maximum duration [s]: 0.800 * Moon: 14 % sunlit, 37° distance * Sun: 80° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.001", 104°) * approx speed of asteroid's shadow [km/s]: 22.1527 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6185-00400-1 by 9562 Memling on 2024 Feb 6 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 92 0 0 6 42 37 18 39 17.2 0 106 -78 6 37 35 6 47 39 6 35 0 6 50 14 .... 93 0 0 6 24 53 18 39 17.3 1 106 -77 6 19 52 6 29 55 6 17 16 6 32 31 0.11 94 0 0 6 6 58 18 39 17.4 2 107 -76 6 1 56 6 12 0 5 59 20 6 14 36 0.08 95 0 0 5 48 51 18 39 17.7 3 107 -75 5 43 49 5 53 54 5 41 13 5 56 30 0.07 96 0 0 5 30 34 18 39 18.0 4 107 -74 5 25 31 5 35 36 5 22 55 5 38 12 0.07 97 0 0 5 12 6 18 39 18.5 5 107 -73 5 7 3 5 17 8 5 4 27 5 19 44 0.06 98 0 0 4 53 27 18 39 19.0 6 107 -72 4 48 24 4 58 30 4 45 48 5 1 6 0.06 99 0 0 4 34 38 18 39 19.7 7 107 -71 4 29 35 4 39 42 4 26 59 4 42 18 0.06 100 0 0 4 15 40 18 39 20.4 9 107 -70 4 10 37 4 20 44 4 8 1 4 23 20 0.06 101 0 0 3 56 33 18 39 21.2 10 107 -69 3 51 29 4 1 37 3 48 53 4 4 13 0.06 102 0 0 3 37 17 18 39 22.1 11 107 -68 3 32 13 3 42 21 3 29 37 3 44 58 0.06 103 0 0 3 17 53 18 39 23.2 12 107 -67 3 12 49 3 22 57 3 10 12 3 25 34 0.06 104 0 0 2 58 20 18 39 24.3 13 107 -66 2 53 16 3 3 25 2 50 39 3 6 1 0.06 105 0 0 2 38 40 18 39 25.5 14 107 -65 2 33 36 2 43 45 2 30 59 2 46 22 0.05 106 0 0 2 18 53 18 39 26.8 15 107 -64 2 13 48 2 23 58 2 11 12 2 26 35 0.05 107 0 0 1 58 59 18 39 28.2 16 107 -63 1 53 54 2 4 4 1 51 17 2 6 41 0.05 108 0 0 1 38 59 18 39 29.7 17 108 -62 1 33 54 1 44 4 1 31 17 1 46 41 0.05 109 0 0 1 18 53 18 39 31.3 18 108 -61 1 13 48 1 23 58 1 11 11 1 26 35 0.05 110 0 0 0 58 41 18 39 33.0 19 108 -60 0 53 36 1 3 47 0 50 59 1 6 24 0.05 111 0 0 0 38 25 18 39 34.8 20 108 -59 0 33 19 0 43 30 0 30 42 0 46 7 0.05 112 0 0 0 18 4 18 39 36.7 21 108 -58 0 12 58 0 23 9 0 10 21 0 25 47 0.05 113 0 0 - 0 2 21 18 39 38.7 22 108 -57 - 0 7 27 0 2 44 - 0 10 4 0 5 22 0.05 114 0 0 - 0 22 50 18 39 40.7 23 108 -56 - 0 27 56 - 0 17 44 - 0 30 33 - 0 15 7 0.05 115 0 0 - 0 43 22 18 39 42.9 24 108 -55 - 0 48 28 - 0 38 16 - 0 51 5 - 0 35 39 0.05 116 0 0 - 1 3 57 18 39 45.2 25 108 -54 - 1 9 2 - 0 58 51 - 1 11 40 - 0 56 13 0.05 117 0 0 - 1 24 33 18 39 47.5 27 107 -53 - 1 29 39 - 1 19 28 - 1 32 17 - 1 16 50 0.05 118 0 0 - 1 45 12 18 39 49.9 28 107 -52 - 1 50 18 - 1 40 6 - 1 52 55 - 1 37 29 0.05 119 0 0 - 2 5 52 18 39 52.5 29 107 -51 - 2 10 58 - 2 0 46 - 2 13 35 - 1 58 8 0.05 120 0 0 - 2 26 32 18 39 55.1 30 107 -50 - 2 31 38 - 2 21 26 - 2 34 16 - 2 18 49 0.05 121 0 0 - 2 47 13 18 39 57.8 31 107 -49 - 2 52 19 - 2 42 7 - 2 54 57 - 2 39 30 0.05 122 0 0 - 3 7 54 18 40 0.6 32 107 -48 - 3 13 0 - 3 2 48 - 3 15 37 - 3 0 10 0.05 123 0 0 - 3 28 34 18 40 3.4 33 107 -47 - 3 33 40 - 3 23 28 - 3 36 17 - 3 20 50 0.05 124 0 0 - 3 49 13 18 40 6.4 34 107 -45 - 3 54 19 - 3 44 7 - 3 56 56 - 3 41 29 0.05 125 0 0 - 4 9 50 18 40 9.4 35 107 -44 - 4 14 56 - 4 4 44 - 4 17 33 - 4 2 6 0.05 126 0 0 - 4 30 25 18 40 12.6 36 107 -43 - 4 35 31 - 4 25 19 - 4 38 8 - 4 22 42 0.05 127 0 0 - 4 50 57 18 40 15.8 37 107 -42 - 4 56 3 - 4 45 52 - 4 58 41 - 4 43 14 0.05 128 0 0 - 5 11 27 18 40 19.0 38 107 -41 - 5 16 32 - 5 6 21 - 5 19 10 - 5 3 44 0.05 129 0 0 - 5 31 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0 0 -13 53 36 18 48 49.0 9 255 88 -13 58 35 -13 48 36 -14 1 10 -13 46 2 0.06 - 97 0 0 -13 37 42 18 48 49.7 8 255 87 -13 42 42 -13 32 42 -13 45 16 -13 30 8 0.06 - 96 0 0 -13 21 35 18 48 50.4 7 255 86 -13 26 35 -13 16 35 -13 29 10 -13 14 0 0.07 - 95 0 0 -13 5 15 18 48 50.9 6 255 85 -13 10 15 -13 0 14 -13 12 50 -12 57 39 0.07 - 94 0 0 -12 48 41 18 48 51.4 5 254 85 -12 53 42 -12 43 41 -12 56 17 -12 41 6 0.07 - 93 0 0 -12 31 56 18 48 51.8 4 254 84 -12 36 56 -12 26 55 -12 39 31 -12 24 20 0.08 - 92 0 0 -12 14 57 18 48 52.1 3 254 83 -12 19 59 -12 9 56 -12 22 34 -12 7 21 0.09 - 91 0 0 -11 57 47 18 48 52.3 2 254 82 -12 2 49 -11 52 46 -12 5 24 -11 50 11 0.12 - 90 0 0 -11 40 26 18 48 52.5 1 254 81 -11 45 27 -11 35 24 -11 48 3 -11 32 48 0.20 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: TYC 6185-00400-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 43 02.6458 DE: -16 09 34.047 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 43 02.6460 DE: -16 09 34.048 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.7 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (9562) Memling asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.008 distance from Earth [AU]: 3.15720 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): 0.020", 0.001", 104.451° remarks: * orbital elements for (9562)Memling : Mean anomaly = 275.8926423813 deg Arg. of pericenter = 202.6351717428 deg Long. of node = 120.5420707895 deg Inclination = 3.5283494389 deg Eccentricity = 0.1743275250 Semimajor axis = 3.1003070715 AU Perihelion dist = 2.5598382129 AU Mag: H = 12.68, G = 0.15 Epoch of elements : MJD 60346.78061091 TDT (2024 Feb 06.7806) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr25,0.80,2024,2,6,18.734662,-0.007171,-0.041643,12.335177,-2.045228,-0.005768,0.001386,0.000000,0.000000 178.6752,-16.2364,-97.51,-15.60,False TYC 6185-00400-1,15.71740159,-16.1594575,12.03,11.68,11.49,0.0,0,,15.73995860,-16.2364294,6.92,6.66,0,0,0 9562,Memling,18.60,17.759,3.1572,0,0,2.387,-5.70,,1.8,0 0,275.7517,2024,2,6,202.6352,120.5421,3.5283,0.17433,3.10031,2.55984,12.68,5.0,0.15 1.258,0.0200,0.0010,104,0.0020,Known errors,1.06,0,-1,-1 20240206_0400-1,60138.16 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 03:46 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org