IOTA/IOTA-ES occultation update for (358) Apollonia / TYC 1275-01954-1 event on 2024 Mar 16, 08:59 UT Visible from Summary ------- On 2024 Mar 16 UT, the 88.241 km diameter asteroid (358) Apollonia will occult a 11.6 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.78 mag to 14.27 mag (the magnitude of the asteroid) for at most 3.480 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: 100 * date and approx. time of event: 2024 Mar 16, 08:55 - 2024 Mar 16, 09:03 * geocentric midpoint of event [JD]: 2460385.87448883 * magnitude of target star: 11.58 * magnitude drop [mag]: 2.78 * estimated maximum duration [s]: 3.480 * Moon: 42 % sunlit, 9° distance * Sun: 77° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 95 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.004", 86°) * approx speed of asteroid's shadow [km/s]: 25.3553 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1275-01954-1 by 358 Apollonia on 2024 Mar 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 46 0 0 -30 55 41 8 55 23.3 0 68 61 .. .. .. -30 27 52 .. .. .. -30 22 50 .... 47 0 0 -30 34 20 8 55 23.3 1 67 61 -31 2 17 -30 6 29 -31 7 21 -30 1 27 0.08 48 0 0 -30 12 46 8 55 23.5 2 67 61 -30 40 44 -29 44 54 -30 45 49 -29 39 52 0.23 49 0 0 -29 51 0 8 55 23.6 3 66 62 -30 18 59 -29 23 6 -30 24 4 -29 18 3 0.29 50 0 0 -29 29 1 8 55 23.9 4 66 62 -29 57 2 -29 1 6 -30 2 7 -28 56 3 0.32 51 0 0 -29 6 50 8 55 24.2 5 65 62 -29 34 52 -28 38 53 -29 39 58 -28 33 51 0.33 52 0 0 -28 44 28 8 55 24.6 6 65 63 -29 12 31 -28 16 30 -29 17 37 -28 11 27 0.34 53 0 0 -28 21 55 8 55 25.1 7 64 63 -28 49 59 -27 53 56 -28 55 5 -27 48 52 0.35 54 0 0 -27 59 11 8 55 25.7 8 64 63 -28 27 17 -27 31 11 -28 32 23 -27 26 7 0.36 55 0 0 -27 36 17 8 55 26.3 9 63 63 -28 4 24 -27 8 16 -28 9 30 -27 3 12 0.36 56 0 0 -27 13 13 8 55 27.1 10 63 63 -27 41 21 -26 45 11 -27 46 27 -26 40 7 0.37 57 0 0 -26 50 0 8 55 27.9 11 62 63 -27 18 9 -26 21 58 -27 23 16 -26 16 54 0.37 58 0 0 -26 26 39 8 55 28.8 12 62 63 -26 54 49 -25 58 36 -26 59 55 -25 53 31 0.37 59 0 0 -26 3 10 8 55 29.7 13 61 63 -26 31 20 -25 35 5 -26 36 26 -25 30 1 0.38 60 0 0 -25 39 32 8 55 30.8 14 61 63 -26 7 43 -25 11 28 -26 12 50 -25 6 23 0.38 61 0 0 -25 15 48 8 55 31.9 14 60 63 -25 43 59 -24 47 43 -25 49 6 -24 42 38 0.38 62 0 0 -24 51 57 8 55 33.1 15 60 63 -25 20 9 -24 23 52 -25 25 16 -24 18 47 0.38 63 0 0 -24 28 1 8 55 34.4 16 60 63 -24 56 12 -23 59 55 -25 1 19 -23 54 50 0.38 64 0 0 -24 3 58 8 55 35.8 17 59 63 -24 32 10 -23 35 52 -24 37 17 -23 30 48 0.38 65 0 0 -23 39 51 8 55 37.3 18 59 63 -24 8 3 -23 11 45 -24 13 10 -23 6 41 0.38 66 0 0 -23 15 40 8 55 38.8 19 58 62 -23 43 52 -22 47 34 -23 48 59 -22 42 29 0.39 67 0 0 -22 51 25 8 55 40.5 20 58 62 -23 19 37 -22 23 19 -23 24 44 -22 18 15 0.39 68 0 0 -22 27 7 8 55 42.2 21 57 62 -22 55 19 -21 59 1 -23 0 26 -21 53 57 0.39 69 0 0 -22 2 47 8 55 44.0 22 57 61 -22 30 58 -21 34 41 -22 36 5 -21 29 37 0.39 70 0 0 -21 38 24 8 55 45.9 23 56 61 -22 6 35 -21 10 20 -22 11 42 -21 5 15 0.39 71 0 0 -21 14 1 8 55 47.8 24 56 60 -21 42 12 -20 45 57 -21 47 18 -20 40 52 0.39 72 0 0 -20 49 37 8 55 49.9 25 56 60 -21 17 47 -20 21 33 -21 22 54 -20 16 29 0.39 73 0 0 -20 25 13 8 55 52.0 26 55 59 -20 53 22 -19 57 10 -20 58 29 -19 52 6 0.39 74 0 0 -20 0 50 8 55 54.2 27 55 59 -20 28 58 -19 32 48 -20 34 5 -19 27 44 0.39 75 0 0 -19 36 28 8 55 56.5 28 54 58 -20 4 36 -19 8 27 -20 9 42 -19 3 23 0.39 76 0 0 -19 12 8 8 55 58.9 30 54 57 -19 40 15 -18 44 8 -19 45 21 -18 39 4 0.39 77 0 0 -18 47 51 8 56 1.4 31 53 57 -19 15 56 -18 19 51 -19 21 2 -18 14 48 0.39 78 0 0 -18 23 37 8 56 3.9 32 53 56 -18 51 41 -17 55 39 -18 56 47 -17 50 35 0.39 79 0 0 -17 59 27 8 56 6.5 33 52 55 -18 27 30 -17 31 30 -18 32 35 -17 26 27 0.39 80 0 0 -17 35 21 8 56 9.2 34 52 55 -18 3 23 -17 7 25 -18 8 28 -17 2 23 0.40 81 0 0 -17 11 21 8 56 12.0 35 51 54 -17 39 21 -16 43 26 -17 44 26 -16 38 24 0.40 82 0 0 -16 47 26 8 56 14.8 36 51 53 -17 15 25 -16 19 33 -17 20 30 -16 14 31 0.40 83 0 0 -16 23 38 8 56 17.7 37 50 53 -16 51 36 -15 55 47 -16 56 40 -15 50 45 0.40 84 0 0 -15 59 57 8 56 20.7 38 50 52 -16 27 53 -15 32 7 -16 32 57 -15 27 6 0.40 85 0 0 -15 36 24 8 56 23.8 39 49 51 -16 4 18 -15 8 36 -16 9 22 -15 3 34 0.40 86 0 0 -15 12 59 8 56 26.9 40 49 50 -15 40 51 -14 45 12 -15 45 54 -14 40 11 0.40 87 0 0 -14 49 43 8 56 30.2 41 48 49 -15 17 33 -14 21 58 -15 22 36 -14 16 57 0.40 88 0 0 -14 26 36 8 56 33.4 41 48 48 -14 54 25 -13 58 53 -14 59 27 -13 53 53 0.40 89 0 0 -14 3 40 8 56 36.8 42 47 48 -14 31 26 -13 35 59 -14 36 29 -13 30 59 0.40 90 0 0 -13 40 54 8 56 40.2 43 46 47 -14 8 38 -13 13 15 -14 13 40 -13 8 15 0.40 91 0 0 -13 18 20 8 56 43.7 44 46 46 -13 46 2 -12 50 43 -13 51 4 -12 45 43 0.40 92 0 0 -12 55 57 8 56 47.2 45 45 45 -13 23 37 -12 28 22 -13 28 38 -12 23 23 0.40 93 0 0 -12 33 47 8 56 50.8 46 44 44 -13 1 25 -12 6 14 -13 6 26 -12 1 16 0.40 94 0 0 -12 11 50 8 56 54.4 47 44 43 -12 39 26 -11 44 20 -12 44 26 -11 39 21 0.40 95 0 0 -11 50 6 8 56 58.2 48 43 42 -12 17 40 -11 22 38 -12 22 40 -11 17 40 0.40 96 0 0 -11 28 36 8 57 1.9 49 42 41 -11 56 8 -11 1 11 -12 1 7 -10 56 13 0.40 97 0 0 -11 7 21 8 57 5.7 50 41 40 -11 34 50 -10 39 58 -11 39 50 -10 35 1 0.40 98 0 0 -10 46 22 8 57 9.6 51 40 39 -11 13 48 -10 19 1 -11 18 47 -10 14 4 0.40 99 0 0 -10 25 37 8 57 13.5 52 40 38 -10 53 1 - 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4 55 21 9 2 48.9 22 293 -50 - 5 21 57 - 4 28 50 - 5 26 46 - 4 24 2 0.41 -172 0 0 - 5 9 50 9 2 50.6 21 293 -51 - 5 36 28 - 4 43 17 - 5 41 18 - 4 38 29 0.41 -171 0 0 - 5 24 41 9 2 52.3 20 292 -52 - 5 51 21 - 4 58 5 - 5 56 11 - 4 53 17 0.41 -170 0 0 - 5 39 53 9 2 54.0 19 292 -53 - 6 6 36 - 5 13 15 - 6 11 26 - 5 8 27 0.41 -169 0 0 - 5 55 26 9 2 55.5 18 292 -54 - 6 22 11 - 5 28 47 - 6 27 2 - 5 23 58 0.41 -168 0 0 - 6 11 21 9 2 57.0 17 292 -55 - 6 38 8 - 5 44 39 - 6 43 0 - 5 39 49 0.41 -167 0 0 - 6 27 36 9 2 58.3 16 292 -56 - 6 54 25 - 6 0 52 - 6 59 17 - 5 56 2 0.41 -166 0 0 - 6 44 11 9 2 59.6 15 292 -57 - 7 11 3 - 6 17 25 - 7 15 55 - 6 12 34 0.41 -165 0 0 - 7 1 6 9 3 0.8 14 292 -58 - 7 28 1 - 6 34 18 - 7 32 53 - 6 29 27 0.41 -164 0 0 - 7 18 21 9 3 2.0 13 291 -58 - 7 45 18 - 6 51 30 - 7 50 11 - 6 46 39 0.41 -163 0 0 - 7 35 56 9 3 3.0 12 291 -59 - 8 2 55 - 7 9 2 - 8 7 48 - 7 4 11 0.41 -162 0 0 - 7 53 49 9 3 3.9 11 291 -60 - 8 20 50 - 7 26 53 - 8 25 44 - 7 22 1 0.41 -161 0 0 - 8 12 1 9 3 4.8 10 291 -61 - 8 39 4 - 7 45 3 - 8 43 59 - 7 40 10 0.41 -160 0 0 - 8 30 31 9 3 5.6 9 291 -62 - 8 57 37 - 8 3 30 - 9 2 32 - 7 58 38 0.42 -159 0 0 - 8 49 19 9 3 6.3 7 291 -63 - 9 16 27 - 8 22 16 - 9 21 23 - 8 17 23 0.42 -158 0 0 - 9 8 24 9 3 6.9 6 290 -64 - 9 35 35 - 8 41 19 - 9 40 31 - 8 36 25 0.42 -157 0 0 - 9 27 47 9 3 7.4 5 290 -64 - 9 55 0 - 9 0 39 - 9 59 56 - 8 55 45 0.42 -156 0 0 - 9 47 26 9 3 7.8 4 290 -65 -10 14 41 - 9 20 16 -10 19 38 - 9 15 21 0.42 -155 0 0 -10 7 21 9 3 8.1 3 290 -66 -10 34 39 - 9 40 9 -10 39 36 - 9 35 14 0.43 -154 0 0 -10 27 32 9 3 8.4 2 290 -67 -10 54 52 -10 0 18 -10 59 50 - 9 55 22 0.44 -153 0 0 -10 47 59 9 3 8.5 1 290 -67 -11 15 21 -10 20 42 -11 20 19 -10 15 46 0.47 -152 0 0 -11 8 40 9 3 8.6 0 289 -68 -11 36 4 -10 41 21 -11 41 3 -10 36 25 0.80 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: TYC 1275-01954-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 47 53.6085 DE: +18 57 49.439 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 47 53.6084 DE: +18 57 49.439 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.6 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (358) Apollonia asteroid class: approx. diameter [km]: 88 approx. diameter ["]: 0.048 distance from Earth [AU]: 2.51460 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#76 date of fit: 2023 Feb 11 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", 0.004", 85.7° remarks: * orbital elements for (358)Apollonia : Mean anomaly = 23.4034376548 deg Arg. of pericenter = 252.0315707447 deg Long. of node = 172.1203422574 deg Inclination = 3.5541486649 deg Eccentricity = 0.1522136816 Semimajor axis = 2.8769122974 AU Perihelion dist = 2.4390068851 AU Mag: H = 9.20, G = 0.15 Epoch of elements : MJD 60385.37448804 TDT (2024 Mar 16.3745) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#762023Feb11,3.48,2024,3,16,8.987732,0.068992,-0.372792,14.072075,2.605421,0.005520,0.000591,-0.000001,0.000000 123.0647,19.0068,47.32,-1.48,False TYC 1275-01954-1,4.79822462,18.9637330,11.82,11.58,11.45,0.0,0,,4.82165302,19.0068380,2.78,2.49,0,0,0 358,Apollonia,14.27,88.241,2.5146,0,0,3.471,9.11,,4.4,0 0,23.3278,2024,3,16,252.0316,172.1203,3.5541,0.15221,2.87691,2.43901,9.20,5.0,0.15 1.091,0.0170,0.0040,86,0.0044,Known errors,1.25,0,-1,-1 20240316_1954-1,60139.24 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org