IOTA/IOTA-ES occultation update for (6710) Apostel / UCAC4 547-026470 event on 2024 Sep 10, 10:29 UT Visible from Summary ------- On 2024 Sep 10 UT, the 11.662 km diameter asteroid (6710) Apostel will occult a 11.4 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.90 mag to 19.28 mag (the magnitude of the asteroid) for at most 0.520 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 Sep 10, 10:24 - 2024 Sep 10, 10:33 * geocentric midpoint of event [JD]: 2460563.93687870 * magnitude of target star: 11.38 * magnitude drop [mag]: 7.90 * estimated maximum duration [s]: 0.520 * Moon: 43 % sunlit, 152° distance * Sun: 72° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.001", 97°) * approx speed of asteroid's shadow [km/s]: 22.4913 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 547-026470 by 6710 Apostel on 2024 Sep 10 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 -133 0 0 -17 33 16 10 24 58.5 0 70 -63 -17 37 6 -17 29 25 -17 39 23 -17 27 9 .... -132 0 0 -17 12 18 10 24 58.6 2 69 -62 -17 16 8 -17 8 28 -17 18 25 -17 6 11 0.27 -131 0 0 -16 51 36 10 24 58.8 3 69 -62 -16 55 25 -16 47 46 -16 57 42 -16 45 30 0.38 -130 0 0 -16 31 9 10 24 59.1 4 69 -61 -16 34 59 -16 27 20 -16 37 15 -16 25 4 0.43 -129 0 0 -16 11 0 10 24 59.5 5 68 -60 -16 14 49 -16 7 11 -16 17 5 -16 4 55 0.46 -128 0 0 -15 51 7 10 25 0.0 6 68 -59 -15 54 55 -15 47 18 -15 57 11 -15 45 3 0.47 -127 0 0 -15 31 31 10 25 0.6 7 68 -59 -15 35 20 -15 27 43 -15 37 35 -15 25 28 0.48 -126 0 0 -15 12 14 10 25 1.3 8 68 -58 -15 16 2 -15 8 26 -15 18 17 -15 6 11 0.49 -125 0 0 -14 53 15 10 25 2.1 9 67 -57 -14 57 2 -14 49 27 -14 59 17 -14 47 12 0.50 -124 0 0 -14 34 34 10 25 3.0 10 67 -56 -14 38 21 -14 30 47 -14 40 36 -14 28 32 0.51 -123 0 0 -14 16 13 10 25 4.0 11 67 -55 -14 19 59 -14 12 26 -14 22 14 -14 10 11 0.51 -122 0 0 -13 58 11 10 25 5.1 12 67 -54 -14 1 57 -13 54 25 -14 4 12 -13 52 10 0.51 -121 0 0 -13 40 29 10 25 6.3 13 66 -53 -13 44 15 -13 36 43 -13 46 29 -13 34 29 0.52 -120 0 0 -13 23 7 10 25 7.7 14 66 -52 -13 26 53 -13 19 22 -13 29 7 -13 17 8 0.52 -119 0 0 -13 6 7 10 25 9.1 15 66 -52 -13 9 52 -13 2 21 -13 12 6 -13 0 8 0.52 -118 0 0 -12 49 27 10 25 10.6 16 66 -51 -12 53 12 -12 45 42 -12 55 25 -12 43 28 0.52 -117 0 0 -12 33 8 10 25 12.2 17 65 -50 -12 36 53 -12 29 24 -12 39 6 -12 27 11 0.53 -116 0 0 -12 17 12 10 25 13.9 18 65 -49 -12 20 56 -12 13 28 -12 23 9 -12 11 15 0.53 -115 0 0 -12 1 37 10 25 15.7 19 65 -48 -12 5 21 -11 57 53 -12 7 34 -11 55 40 0.53 -114 0 0 -11 46 25 10 25 17.6 20 64 -47 -11 50 8 -11 42 41 -11 52 21 -11 40 29 0.53 -113 0 0 -11 31 35 10 25 19.6 21 64 -46 -11 35 18 -11 27 52 -11 37 31 -11 25 40 0.53 -112 0 0 -11 17 9 10 25 21.7 22 64 -45 -11 20 52 -11 13 26 -11 23 4 -11 11 14 0.53 -111 0 0 -11 3 5 10 25 23.8 23 64 -44 -11 6 48 -10 59 23 -11 9 0 -10 57 11 0.53 -110 0 0 -10 49 26 10 25 26.1 24 63 -43 -10 53 8 -10 45 44 -10 55 20 -10 43 32 0.53 -109 0 0 -10 36 10 10 25 28.4 25 63 -42 -10 39 51 -10 32 28 -10 42 3 -10 30 16 0.54 -108 0 0 -10 23 17 10 25 30.9 26 63 -41 -10 26 59 -10 19 36 -10 29 11 -10 17 24 0.54 -107 0 0 -10 10 50 10 25 33.4 27 62 -40 -10 14 31 -10 7 9 -10 16 43 -10 4 57 0.54 -106 0 0 - 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31 0 0 -15 48 30 10 31 8.0 50 329 34 -15 52 20 -15 44 41 -15 54 36 -15 42 25 0.55 - 30 0 0 -16 8 41 10 31 12.4 49 328 35 -16 12 30 -16 4 51 -16 14 47 -16 2 35 0.55 - 29 0 0 -16 29 9 10 31 16.8 48 327 36 -16 32 59 -16 25 19 -16 35 15 -16 23 2 0.55 - 28 0 0 -16 49 54 10 31 21.1 47 326 37 -16 53 44 -16 46 4 -16 56 1 -16 43 47 0.55 - 27 0 0 -17 10 56 10 31 25.4 46 325 38 -17 14 47 -17 7 5 -17 17 4 -17 4 48 0.55 - 26 0 0 -17 32 14 10 31 29.6 46 325 38 -17 36 6 -17 28 23 -17 38 23 -17 26 6 0.55 - 25 0 0 -17 53 49 10 31 33.8 45 324 39 -17 57 40 -17 49 57 -17 59 58 -17 47 40 0.55 - 24 0 0 -18 15 38 10 31 37.8 44 323 40 -18 19 30 -18 11 46 -18 21 48 -18 9 28 0.55 - 23 0 0 -18 37 42 10 31 41.8 43 322 41 -18 41 34 -18 33 50 -18 43 52 -18 31 32 0.55 - 22 0 0 -19 0 0 10 31 45.8 42 321 41 -19 3 53 -18 56 7 -19 6 11 -18 53 49 0.55 - 21 0 0 -19 22 31 10 31 49.7 41 320 42 -19 26 24 -19 18 39 -19 28 43 -19 16 20 0.55 - 20 0 0 -19 45 16 10 31 53.5 40 320 43 -19 49 9 -19 41 23 -19 51 28 -19 39 4 0.55 - 19 0 0 -20 8 12 10 31 57.2 39 319 43 -20 12 6 -20 4 19 -20 14 25 -20 2 0 0.55 - 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5 0 0 -25 44 54 10 32 40.6 26 310 51 -25 48 52 -25 40 57 -25 51 13 -25 38 36 0.55 - 4 0 0 -26 9 37 10 32 43.1 25 309 51 -26 13 35 -26 5 40 -26 15 56 -26 3 18 0.55 - 3 0 0 -26 34 22 10 32 45.4 24 309 51 -26 38 19 -26 30 24 -26 40 41 -26 28 3 0.55 - 2 0 0 -26 59 7 10 32 47.7 23 308 51 -27 3 5 -26 55 9 -27 5 27 -26 52 48 0.55 - 1 0 0 -27 23 53 10 32 49.8 22 308 52 -27 27 51 -27 19 55 -27 30 12 -27 17 33 0.55 0 0 0 -27 48 38 10 32 51.9 21 307 52 -27 52 36 -27 44 40 -27 54 58 -27 42 18 0.55 1 0 0 -28 13 22 10 32 53.9 20 307 52 -28 17 21 -28 9 24 -28 19 42 -28 7 2 0.55 2 0 0 -28 38 5 10 32 55.7 19 306 52 -28 42 3 -28 34 6 -28 44 25 -28 31 45 0.55 3 0 0 -29 2 45 10 32 57.5 18 306 52 -29 6 44 -28 58 47 -29 9 6 -28 56 25 0.55 4 0 0 -29 27 22 10 32 59.2 18 305 52 -29 31 21 -29 23 24 -29 33 43 -29 21 2 0.55 5 0 0 -29 51 56 10 33 0.8 17 304 52 -29 55 55 -29 47 58 -29 58 17 -29 45 36 0.55 6 0 0 -30 16 26 10 33 2.3 16 304 52 -30 20 24 -30 12 27 -30 22 46 -30 10 5 0.55 7 0 0 -30 40 50 10 33 3.7 15 303 52 -30 44 49 -30 36 52 -30 47 11 -30 34 30 0.55 8 0 0 -31 5 9 10 33 5.0 14 303 52 -31 9 8 -31 1 11 -31 11 30 -30 58 49 0.55 9 0 0 -31 29 22 10 33 6.3 13 302 52 -31 33 21 -31 25 24 -31 35 43 -31 23 2 0.55 10 0 0 -31 53 29 10 33 7.4 12 302 52 -31 57 27 -31 49 30 -31 59 49 -31 47 8 0.55 11 0 0 -32 17 28 10 33 8.4 11 301 52 -32 21 26 -32 13 29 -32 23 48 -32 11 8 0.55 12 0 0 -32 41 19 10 33 9.4 10 301 52 -32 45 18 -32 37 21 -32 47 40 -32 34 59 0.55 13 0 0 -33 5 2 10 33 10.3 9 300 52 -33 9 1 -33 1 4 -33 11 22 -32 58 42 0.56 14 0 0 -33 28 36 10 33 11.0 8 299 51 -33 32 35 -33 24 38 -33 34 56 -33 22 16 0.56 15 0 0 -33 52 1 10 33 11.7 7 299 51 -33 55 59 -33 48 3 -33 58 21 -33 45 41 0.56 16 0 0 -34 15 16 10 33 12.3 6 298 51 -34 19 14 -34 11 18 -34 21 36 -34 8 56 0.56 17 0 0 -34 38 20 10 33 12.8 5 298 51 -34 42 18 -34 34 22 -34 44 40 -34 32 1 0.56 18 0 0 -35 1 14 10 33 13.3 4 297 50 -35 5 12 -34 57 16 -35 7 33 -34 54 55 0.57 19 0 0 -35 23 56 10 33 13.6 4 297 50 -35 27 54 -35 19 59 -35 30 15 -35 17 37 0.57 20 0 0 -35 46 27 10 33 13.9 3 296 50 -35 50 24 -35 42 29 -35 52 46 -35 40 8 0.58 21 0 0 -36 8 45 10 33 14.1 2 295 49 -36 12 42 -36 4 48 -36 15 4 -36 2 27 0.59 22 0 0 -36 30 51 10 33 14.2 1 295 49 -36 34 48 -36 26 54 -36 37 9 -36 24 33 0.64 23 0 0 -36 52 44 10 33 14.2 0 294 49 .. .. .. -36 48 47 .. .. .. -36 46 26 10.80 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 547-026470 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 23 56.6881 DE: +19 14 56.691 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 23 56.6883 DE: +19 14 56.690 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (6710) Apostel asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.005 distance from Earth [AU]: 3.34640 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#43 date of fit: 2023 Feb 09 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): 0.010", 0.001", 96.502° remarks: * orbital elements for (6710)Apostel : Mean anomaly = 117.6708796898 deg Arg. of pericenter = 83.2992136189 deg Long. of node = 217.6585566128 deg Inclination = 6.5749860973 deg Eccentricity = 0.2233348233 Semimajor axis = 2.8036137280 AU Perihelion dist = 2.1774691515 AU Mag: H = 13.22, G = 0.15 Epoch of elements : MJD 60563.43687755 TDT (2024 Sep 10.4369) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#432023Feb09,0.52,2024,9,10,10.485089,-0.086887,-0.476269,12.491218,-2.263978,-0.005495,0.000122,0.000000,0.000000 -50.8798,19.2374,21.94,4.66,False UCAC4 547-026470,6.39908000,19.2490807,11.65,11.38,11.23,0.0,4,K,6.42320333,19.2374034,7.90,7.60,0,0,0 6710,Apostel,19.28,11.662,3.3464,0,0,2.318,-5.95,,3.0,0 0,117.5792,2024,9,10,83.2992,217.6586,6.5750,0.22333,2.80361,2.17747,13.22,5.0,0.15 1.297,0.0100,0.0013,97,0.0014,Known errors,0.86,0,-1,-1 20240910_026470,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:15 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org