IOTA/IOTA-ES occultation update for (16277) Mallada / TYC 6389-00214-1 event on 2024 Nov 21, 11:15 UT Visible from Summary ------- On 2024 Nov 21 UT, the 14.1220620130301 km diameter asteroid (16277) Mallada will occult a 8.5 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 10.23 mag to 18.69 mag (the magnitude of the asteroid) for at most 1.000 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: 78 * date and approx. time of event: 2024 Nov 21, 11:09 - 2024 Nov 21, 11:21 * geocentric midpoint of event [JD]: 2460635.96923850 * magnitude of target star: 8.46 * magnitude drop [mag]: 10.23 * estimated maximum duration [s]: 1.000 * Moon: 66 % sunlit, 155° distance * Sun: 96° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.70 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.003", 73°) * approx speed of asteroid's shadow [km/s]: 14.4511 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6389-00214-1 by 16277 Mallada on 2024 Nov 21 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 - 24 0 0 .. .. .... .. .. .. .. .. .. -65 42 18 .. .. .. -65 52 53 .. .. .. .... - 23 0 0 -66 3 5 11 9 50.2 1 138 40 -66 10 32 -65 55 39 -66 21 2 -65 45 14 .... - 22 0 0 -66 30 27 11 9 50.3 1 137 39 -66 37 50 -66 23 5 -66 48 14 -66 12 46 0.73 - 21 0 0 -66 56 53 11 9 50.5 2 136 39 -67 4 12 -66 49 35 -67 14 31 -66 39 22 0.75 - 20 0 0 -67 22 26 11 9 50.7 2 135 39 -67 29 41 -67 15 12 -67 39 54 -67 5 5 0.75 - 19 0 0 -67 47 7 11 9 51.0 3 134 39 -67 54 18 -67 39 57 -68 4 24 -67 29 55 0.76 - 18 0 0 -68 10 57 11 9 51.3 3 134 39 -68 18 4 -68 3 51 -68 28 4 -67 53 55 0.76 - 17 0 0 -68 33 57 11 9 51.6 4 133 39 -68 41 0 -68 26 56 -68 50 55 -68 17 5 0.76 - 16 0 0 -68 56 10 11 9 52.0 5 132 39 -69 3 8 -68 49 12 -69 12 57 -68 39 28 0.76 - 15 0 0 -69 17 36 11 9 52.4 5 131 39 -69 24 30 -69 10 43 -69 34 14 -69 1 4 0.76 - 14 0 0 -69 38 17 11 9 52.9 6 130 38 -69 45 7 -69 31 28 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5 50 - 8 25 35 - 7 57 42 0.80 -176 0 0 - 7 35 42 11 21 10.4 17 253 -62 - 7 41 27 - 7 29 57 - 7 49 33 - 7 21 53 0.80 -175 0 0 - 7 0 48 11 21 13.6 16 253 -63 - 7 6 31 - 6 55 6 - 7 14 33 - 6 47 7 0.81 -174 0 0 - 6 26 57 11 21 16.5 15 253 -64 - 6 32 36 - 6 21 17 - 6 40 35 - 6 13 21 0.81 -173 0 0 - 5 54 7 11 21 19.2 14 253 -64 - 5 59 44 - 5 48 30 - 6 7 38 - 5 40 37 0.81 -172 0 0 - 5 22 18 11 21 21.7 13 252 -65 - 5 27 53 - 5 16 43 - 5 35 44 - 5 8 55 0.81 -171 0 0 - 4 51 30 11 21 24.0 12 252 -65 - 4 57 2 - 4 45 58 - 5 4 50 - 4 38 12 0.82 -170 0 0 - 4 21 42 11 21 26.0 10 252 -65 - 4 27 13 - 4 16 13 - 4 34 57 - 4 8 30 0.82 -169 0 0 - 3 52 55 11 21 27.9 9 252 -66 - 3 58 23 - 3 47 28 - 4 6 4 - 3 39 48 0.83 -168 0 0 - 3 25 7 11 21 29.5 8 252 -66 - 3 30 33 - 3 19 42 - 3 38 11 - 3 12 6 0.83 -167 0 0 - 2 58 19 11 21 30.9 7 252 -66 - 3 3 43 - 2 52 56 - 3 11 18 - 2 45 22 0.84 -166 0 0 - 2 32 29 11 21 32.1 6 252 -66 - 2 37 51 - 2 27 8 - 2 45 23 - 2 19 37 0.86 -165 0 0 - 2 7 38 11 21 33.1 5 252 -66 - 2 12 58 - 2 2 18 - 2 20 27 - 1 54 50 0.88 -164 0 0 - 1 43 44 11 21 33.9 4 252 -66 - 1 49 2 - 1 38 27 - 1 56 29 - 1 31 1 0.90 -163 0 0 - 1 20 48 11 21 34.5 3 252 -66 - 1 26 4 - 1 15 32 - 1 33 29 - 1 8 9 0.96 -162 0 0 - 0 58 49 11 21 34.9 2 252 -66 - 1 4 3 - 0 53 35 - 1 11 26 - 0 46 14 1.07 -161 0 0 - 0 37 46 11 21 35.1 1 252 -66 - 0 42 59 - 0 32 34 - 0 50 19 - 0 25 15 1.55 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6389-00214-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 42 02.1157 DE: -18 26 19.360 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 42 02.1155 DE: -18 26 19.361 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 8.5 * B mag [mag]: 9.0 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (16277) Mallada asteroid class: approx. diameter [km]: 14 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.37110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#43 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): 0.016", 0.003", 72.52° remarks: * orbital elements for (16277)Mallada : Mean anomaly = 300.9694072621 deg Arg. of pericenter = 330.9485748061 deg Long. of node = 93.0774923911 deg Inclination = 8.4782191600 deg Eccentricity = 0.0769459984 Semimajor axis = 2.7535195589 AU Perihelion dist = 2.5416472472 AU Mag: H = 13.65, G = 0.15 Epoch of elements : MJD 60635.46923841 TDT (2024 Nov 21.4692) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#432023Apr25,1.00,2024,11,21,11.261724,0.356247,-0.482155,6.565360,4.840105,0.005339,0.002306,0.000000,0.000000 110.9682,-18.3096,7.57,-20.07,False TYC 6389-00214-1,22.70058773,-18.4387109,9.00,8.46,8.17,0.2,0,,22.72293728,-18.3096412,10.23,10.07,0,0,0 16277,Mallada,18.69,14.466,2.3711,0,0,1.711,17.96,,1.0,0 0,300.8682,2024,11,21,330.9486,93.0775,8.4782,0.07695,2.75352,2.54165,13.64,5.0,0.15 1.702,0.0163,0.0027,73,0.0059,Known errors,1.02,0,-1,-1 20241121_0214-1,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:59 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org