IOTA/IOTA-ES occultation update for (7110) Johnpearse / TYC 5734-01311-1 event on 2024 Aug 21, 09:04 UT Visible from Summary ------- On 2024 Aug 21 UT, the 16.1661940617325 km diameter asteroid (7110) Johnpearse will occult a 9.9 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.12 mag to 18.01 mag (the magnitude of the asteroid) for at most 1.730 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: 81 * date and approx. time of event: 2024 Aug 21, 08:55 - 2024 Aug 21, 09:14 * geocentric midpoint of event [JD]: 2460543.87841016 * magnitude of target star: 9.89 * magnitude drop [mag]: 8.12 * estimated maximum duration [s]: 1.730 * Moon: 96 % sunlit, 59° distance * Sun: 143° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 19 * 1 sigma uncertainty interval [path widths]: +/- 0.66 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.005", 80°) * approx speed of asteroid's shadow [km/s]: 9.4649 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5734-01311-1 by 7110 Johnpearse on 2024 Aug 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 72 0 0 -57 43 16 9 14 32.8 0 115 16 -57 37 37 -57 48 55 -57 30 11 -57 56 23 .... 73 0 0 -57 58 30 9 14 32.7 1 115 16 -57 52 52 -58 4 8 -57 45 28 -58 11 34 0.54 74 0 0 -58 13 17 9 14 32.5 1 114 15 -58 7 41 -58 18 54 -58 0 18 -58 26 18 0.56 75 0 0 -58 27 38 9 14 32.3 2 113 15 -58 22 2 -58 33 13 -58 14 42 -58 40 35 0.56 76 0 0 -58 41 32 9 14 31.9 3 112 14 -58 35 58 -58 47 6 -58 28 39 -58 54 27 0.57 77 0 0 -58 55 1 9 14 31.5 3 111 14 -58 49 28 -59 0 34 -58 42 11 -59 7 53 0.57 78 0 0 -59 8 5 9 14 31.1 4 110 13 -59 2 33 -59 13 36 -58 55 18 -59 20 53 0.57 79 0 0 -59 20 43 9 14 30.5 4 110 13 -59 15 13 -59 26 14 -59 7 59 -59 33 29 0.57 80 0 0 -59 32 57 9 14 29.9 5 109 12 -59 27 28 -59 38 26 -59 20 16 -59 45 40 0.57 81 0 0 -59 44 47 9 14 29.3 5 108 12 -59 39 19 -59 50 15 -59 32 9 -59 57 27 0.58 82 0 0 -59 56 13 9 14 28.5 6 107 12 -59 50 47 -60 1 40 -59 43 37 -60 8 51 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- 9 49 6 -10 0 27 - 9 41 39 -10 7 55 0.59 -104 0 0 - 9 26 15 8 56 22.4 24 259 -61 - 9 20 37 - 9 31 54 - 9 13 11 - 9 39 21 0.59 -103 0 0 - 8 58 16 8 56 16.7 23 259 -60 - 8 52 38 - 9 3 53 - 8 45 14 - 9 11 19 0.59 -102 0 0 - 8 30 48 8 56 11.1 22 259 -59 - 8 25 12 - 8 36 25 - 8 17 50 - 8 43 48 0.59 -101 0 0 - 8 3 53 8 56 5.9 21 258 -58 - 7 58 18 - 8 9 29 - 7 50 57 - 8 16 51 0.59 -100 0 0 - 7 37 31 8 56 0.9 20 258 -57 - 7 31 57 - 7 43 6 - 7 24 38 - 7 50 26 0.59 - 99 0 0 - 7 11 43 8 55 56.1 19 258 -56 - 7 6 10 - 7 17 16 - 6 58 53 - 7 24 35 0.59 - 98 0 0 - 6 46 29 8 55 51.6 18 258 -55 - 6 40 57 - 6 52 0 - 6 33 41 - 6 59 18 0.60 - 97 0 0 - 6 21 48 8 55 47.4 17 258 -54 - 6 16 18 - 6 27 19 - 6 9 3 - 6 34 35 0.60 - 96 0 0 - 5 57 43 8 55 43.4 15 258 -53 - 5 52 14 - 6 3 13 - 5 45 0 - 6 10 27 0.60 - 95 0 0 - 5 34 12 8 55 39.7 14 257 -52 - 5 28 44 - 5 39 41 - 5 21 32 - 5 46 54 0.60 - 94 0 0 - 5 11 17 8 55 36.2 13 257 -51 - 5 5 50 - 5 16 45 - 4 58 40 - 5 23 57 0.60 - 93 0 0 - 4 48 58 8 55 33.0 12 257 -50 - 4 43 32 - 4 54 24 - 4 36 23 - 5 1 35 0.61 - 92 0 0 - 4 27 14 8 55 30.1 11 257 -49 - 4 21 49 - 4 32 40 - 4 14 42 - 4 39 49 0.61 - 91 0 0 - 4 6 7 8 55 27.4 10 257 -48 - 4 0 43 - 4 11 32 - 3 53 37 - 4 18 40 0.61 - 90 0 0 - 3 45 37 8 55 25.0 9 257 -47 - 3 40 13 - 3 51 0 - 3 33 8 - 3 58 7 0.62 - 89 0 0 - 3 25 43 8 55 22.8 8 257 -46 - 3 20 20 - 3 31 5 - 3 13 16 - 3 38 10 0.62 - 88 0 0 - 3 6 26 8 55 20.9 7 257 -45 - 3 1 4 - 3 11 47 - 2 54 2 - 3 18 51 0.63 - 87 0 0 - 2 47 46 8 55 19.2 6 257 -43 - 2 42 25 - 2 53 7 - 2 35 24 - 3 0 9 0.64 - 86 0 0 - 2 29 43 8 55 17.9 5 257 -42 - 2 24 24 - 2 35 3 - 2 17 23 - 2 42 5 0.66 - 85 0 0 - 2 12 19 8 55 16.7 4 257 -41 - 2 7 0 - 2 17 38 - 2 0 1 - 2 24 38 0.68 - 84 0 0 - 1 55 32 8 55 15.9 3 256 -40 - 1 50 14 - 2 0 50 - 1 43 15 - 2 7 50 0.71 - 83 0 0 - 1 39 23 8 55 15.2 2 256 -39 - 1 34 5 - 1 44 40 - 1 27 8 - 1 51 39 0.78 - 82 0 0 - 1 23 52 8 55 14.9 1 256 -38 - 1 18 35 - 1 29 8 - 1 11 39 - 1 36 6 0.98 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.3 Data for the target star ------------------------ * name: TYC 5734-01311-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 29 10.0668 DE: -13 38 12.026 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 29 10.0668 DE: -13 38 12.026 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.9 * B mag [mag]: 10.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7110) Johnpearse asteroid class: approx. diameter [km]: 16 approx. diameter ["]: 0.010 distance from Earth [AU]: 2.31370 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#40 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): 0.013", 0.005", 79.672° remarks: * orbital elements for (7110)Johnpearse : Mean anomaly = 237.9315871707 deg Arg. of pericenter = 268.9521421488 deg Long. of node = 173.2060215413 deg Inclination = 7.6557698706 deg Eccentricity = 0.2080783690 Semimajor axis = 2.7954129059 AU Perihelion dist = 2.2137479477 AU Mag: H = 12.99, G = 0.15 Epoch of elements : MJD 60543.37841062 TDT (2024 Aug 21.3784) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#402023Apr25,1.73,2024,8,21,9.081844,0.250177,-0.443529,-4.653146,-2.624520,0.003423,-0.000115,0.000001,0.000000 -173.7661,-13.5856,44.54,11.89,False TYC 5734-01311-1,19.48612968,-13.6366738,10.76,9.89,9.42,0.1,0,,19.50950910,-13.5855616,8.12,8.14,0,0,0 7110,Johnpearse,18.01,16.334,2.3137,0,0,-1.213,-9.98,,1.0,0 0,237.8518,2024,8,21,268.9521,173.2060,7.6558,0.20808,2.79541,2.21375,12.99,5.0,0.15 1.658,0.0133,0.0050,80,0.0064,Known errors,1.03,0,-1,-1 20240821_1311-1,60140.26 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 06:10 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org