IOTA/IOTA-ES occultation update for (872) Holda / TYC 1296-01561-1 event on 2024 Mar 27, 00:50 UT Visible from Summary ------- On 2024 Mar 27 UT, the 32.273 km diameter asteroid (872) Holda will occult a 11.0 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.78 mag to 15.74 mag (the magnitude of the asteroid) for at most 1.380 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 Mar 27, 00:45 - 2024 Mar 27, 00:54 * geocentric midpoint of event [JD]: 2460396.53500083 * magnitude of target star: 10.97 * magnitude drop [mag]: 4.78 * estimated maximum duration [s]: 1.380 * Moon: 97 % sunlit, 124° distance * Sun: 75° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.003", 92°) * approx speed of asteroid's shadow [km/s]: 23.3469 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1296-01561-1 by 872 Holda on 2024 Mar 27 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 164 0 0 -25 46 7 0 46 2.8 1 72 61 -25 55 43 -25 36 31 -26 0 25 -25 31 50 .... 165 0 0 -25 28 19 0 46 2.9 2 71 62 -25 37 56 -25 18 43 -25 42 38 -25 14 2 0.15 166 0 0 -25 10 20 0 46 3.1 3 71 62 -25 19 57 -25 0 44 -25 24 40 -24 56 2 0.20 167 0 0 -24 52 10 0 46 3.4 4 70 62 -25 1 47 -24 42 33 -25 6 30 -24 37 50 0.23 168 0 0 -24 33 48 0 46 3.7 5 70 63 -24 43 26 -24 24 10 -24 48 9 -24 19 28 0.24 169 0 0 -24 15 15 0 46 4.1 6 70 63 -24 24 53 -24 5 37 -24 29 36 -24 0 54 0.25 170 0 0 -23 56 31 0 46 4.6 7 69 63 -24 6 10 -23 46 53 -24 10 54 -23 42 10 0.26 171 0 0 -23 37 37 0 46 5.2 8 69 64 -23 47 17 -23 27 59 -23 52 0 -23 23 16 0.26 172 0 0 -23 18 34 0 46 5.9 8 68 64 -23 28 13 -23 8 55 -23 32 57 -23 4 11 0.27 173 0 0 -22 59 20 0 46 6.6 9 68 64 -23 9 0 -22 49 41 -23 13 44 -22 44 57 0.27 174 0 0 -22 39 58 0 46 7.5 10 68 64 -22 49 38 -22 30 18 -22 54 22 -22 25 34 0.27 175 0 0 -22 20 26 0 46 8.4 11 67 65 -22 30 7 -22 10 46 -22 34 51 -22 6 2 0.27 176 0 0 -22 0 46 0 46 9.4 12 67 65 -22 10 27 -21 51 5 -22 15 11 -21 46 21 0.28 177 0 0 -21 40 58 0 46 10.5 13 66 65 -21 50 39 -21 31 17 -21 55 23 -21 26 33 0.28 178 0 0 -21 21 1 0 46 11.7 14 66 65 -21 30 43 -21 11 20 -21 35 28 -21 6 36 0.28 179 0 0 -21 0 58 0 46 13.0 15 66 65 -21 10 40 -20 51 17 -21 15 25 -20 46 33 0.28 -180 0 0 -20 40 48 0 46 14.3 16 65 65 -20 50 30 -20 31 6 -20 55 15 -20 26 22 0.28 -179 0 0 -20 20 31 0 46 15.8 17 65 65 -20 30 13 -20 10 49 -20 34 58 -20 6 5 0.28 -178 0 0 -20 0 8 0 46 17.3 18 65 64 -20 9 51 -19 50 26 -20 14 36 -19 45 42 0.28 -177 0 0 -19 39 40 0 46 18.9 19 64 64 -19 49 22 -19 29 58 -19 54 8 -19 25 13 0.28 -176 0 0 -19 19 6 0 46 20.6 20 64 64 -19 28 49 -19 9 24 -19 33 34 -19 4 39 0.28 -175 0 0 -18 58 27 0 46 22.4 21 63 64 -19 8 10 -18 48 45 -19 12 56 -18 44 0 0.28 -174 0 0 -18 37 45 0 46 24.3 22 63 63 -18 47 28 -18 28 2 -18 52 13 -18 23 17 0.29 -173 0 0 -18 16 58 0 46 26.3 23 63 63 -18 26 41 -18 7 16 -18 31 27 -18 2 31 0.29 -172 0 0 -17 56 8 0 46 28.3 24 62 63 -18 5 51 -17 46 26 -18 10 37 -17 41 41 0.29 -171 0 0 -17 35 15 0 46 30.5 25 62 62 -17 44 59 -17 25 33 -17 49 44 -17 20 48 0.29 -170 0 0 -17 14 20 0 46 32.7 26 62 62 -17 24 3 -17 4 38 -17 28 49 -16 59 53 0.29 -169 0 0 -16 53 23 0 46 35.0 27 61 61 -17 3 6 -16 43 41 -17 7 52 -16 38 56 0.29 -168 0 0 -16 32 25 0 46 37.4 28 61 61 -16 42 8 -16 22 42 -16 46 53 -16 17 57 0.29 -167 0 0 -16 11 25 0 46 39.9 29 60 60 -16 21 8 -16 1 43 -16 25 54 -15 56 58 0.29 -166 0 0 -15 50 25 0 46 42.5 30 60 60 -16 0 8 -15 40 43 -16 4 54 -15 35 58 0.29 -165 0 0 -15 29 25 0 46 45.1 32 60 59 -15 39 8 -15 19 43 -15 43 54 -15 14 58 0.29 -164 0 0 -15 8 26 0 46 47.8 33 59 58 -15 18 9 -14 58 44 -15 22 54 -14 53 59 0.29 -163 0 0 -14 47 28 0 46 50.7 34 59 58 -14 57 10 -14 37 46 -15 1 56 -14 33 1 0.29 -162 0 0 -14 26 31 0 46 53.6 35 58 57 -14 36 14 -14 16 49 -14 40 59 -14 12 5 0.29 -161 0 0 -14 5 37 0 46 56.5 36 58 56 -14 15 19 -13 55 55 -14 20 4 -13 51 11 0.29 -160 0 0 -13 44 45 0 46 59.6 37 58 56 -13 54 27 -13 35 3 -13 59 12 -13 30 19 0.29 -159 0 0 -13 23 56 0 47 2.7 38 57 55 -13 33 38 -13 14 15 -13 38 23 -13 9 31 0.29 -158 0 0 -13 3 11 0 47 5.9 39 57 54 -13 12 52 -12 53 30 -13 17 37 -12 48 46 0.29 -157 0 0 -12 42 30 0 47 9.2 40 56 53 -12 52 11 -12 32 49 -12 56 56 -12 28 5 0.29 -156 0 0 -12 21 53 0 47 12.6 41 56 53 -12 31 34 -12 12 13 -12 36 19 -12 7 29 0.29 -155 0 0 -12 1 22 0 47 16.0 42 55 52 -12 11 3 -11 51 42 -12 15 47 -11 46 59 0.29 -154 0 0 -11 40 57 0 47 19.5 43 55 51 -11 50 37 -11 31 17 -11 55 21 -11 26 33 0.29 -153 0 0 -11 20 37 0 47 23.1 44 55 50 -11 30 17 -11 10 58 -11 35 1 -11 6 14 0.29 -152 0 0 -11 0 24 0 47 26.8 45 54 49 -11 10 4 -10 50 45 -11 14 47 -10 46 2 0.29 -151 0 0 -10 40 18 0 47 30.5 46 54 48 -10 49 57 -10 30 40 -10 54 41 -10 25 57 0.29 -150 0 0 -10 20 20 0 47 34.3 47 53 48 -10 29 59 -10 10 42 -10 34 42 -10 5 59 0.29 -149 0 0 -10 0 30 0 47 38.1 48 52 47 -10 10 8 - 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2 26 14 - 2 49 34 - 2 21 39 0.30 - 43 0 0 - 2 49 19 0 54 36.4 15 287 -59 - 2 58 41 - 2 39 56 - 3 3 17 - 2 35 21 0.30 - 42 0 0 - 3 3 19 0 54 37.6 14 287 -60 - 3 12 42 - 2 53 56 - 3 17 18 - 2 49 20 0.30 - 41 0 0 - 3 17 35 0 54 38.8 12 287 -61 - 3 26 59 - 3 8 12 - 3 31 35 - 3 3 36 0.30 - 40 0 0 - 3 32 9 0 54 39.8 11 287 -62 - 3 41 33 - 3 22 45 - 3 46 10 - 3 18 9 0.30 - 39 0 0 - 3 46 58 0 54 40.8 10 287 -63 - 3 56 23 - 3 37 34 - 4 1 0 - 3 32 57 0.30 - 38 0 0 - 4 2 4 0 54 41.7 9 287 -64 - 4 11 30 - 3 52 39 - 4 16 7 - 3 48 2 0.30 - 37 0 0 - 4 17 25 0 54 42.5 8 287 -65 - 4 26 51 - 4 7 59 - 4 31 29 - 4 3 23 0.31 - 36 0 0 - 4 33 2 0 54 43.2 7 287 -66 - 4 42 29 - 4 23 36 - 4 47 6 - 4 18 58 0.31 - 35 0 0 - 4 48 54 0 54 43.8 6 287 -67 - 4 58 21 - 4 39 27 - 5 2 59 - 4 34 49 0.31 - 34 0 0 - 5 5 0 0 54 44.3 5 287 -68 - 5 14 28 - 4 55 33 - 5 19 7 - 4 50 55 0.31 - 33 0 0 - 5 21 22 0 54 44.7 4 287 -69 - 5 30 50 - 5 11 53 - 5 35 29 - 5 7 16 0.31 - 32 0 0 - 5 37 57 0 54 45.1 3 286 -70 - 5 47 26 - 5 28 28 - 5 52 5 - 5 23 50 0.31 - 31 0 0 - 5 54 46 0 54 45.3 2 286 -71 - 6 4 16 - 5 45 17 - 6 8 55 - 5 40 38 0.32 - 30 0 0 - 6 11 48 0 54 45.5 1 286 -72 - 6 21 19 - 6 2 18 - 6 25 58 - 5 57 40 0.34 - 29 0 0 - 6 29 4 0 54 45.5 0 286 -73 - 6 38 35 - 6 19 33 - 6 43 14 - 6 14 54 0.84 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: TYC 1296-01561-1 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 25 00.8621 DE: +16 01 28.144 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 25 00.8619 DE: +16 01 28.144 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.0 * B mag [mag]: 11.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (872) Holda asteroid class: approx. diameter [km]: 32 approx. diameter ["]: 0.015 distance from Earth [AU]: 2.88840 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 date of fit: 2023 Apr 27 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): 0.009", 0.003", 92.2° remarks: * orbital elements for (872)Holda : Mean anomaly = 254.9175801927 deg Arg. of pericenter = 20.8956583531 deg Long. of node = 194.6530680773 deg Inclination = 7.3848881528 deg Eccentricity = 0.0802976986 Semimajor axis = 2.7305493390 AU Perihelion dist = 2.5112925112 AU Mag: H = 10.19, G = 0.15 Epoch of elements : MJD 60396.03500091 TDT (2024 Mar 27.0350) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr27,1.38,2024,3,27,0.840020,0.050977,-0.285469,12.972262,2.317319,0.005558,0.000142,0.000000,0.000000 -115.9523,16.0463,168.74,2.72,False TYC 1296-01561-1,5.41690616,16.0244844,11.31,10.97,10.79,0.0,0,,5.43996402,16.0463172,4.78,4.52,0,0,0 872,Holda,15.74,32.273,2.8884,0,0,2.740,7.05,,1.6,0 0,254.6915,2024,3,26,20.8957,194.6531,7.3849,0.08030,2.73055,2.51129,10.19,5.0,0.15 1.245,0.0090,0.0033,92,0.0038,Known errors,1.04,0,-1,-1 20240327_1561-1,60139.26 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org