IOTA/IOTA-ES occultation update for (804) Hispania / UCAC4 393-135091 event on 2022 May 10, 03:03 UT Visible from S Africa Summary ------- On 2022 May 10 UT, the 147.2 km diameter asteroid (804) Hispania will occult a 12.4 mag star in the constellation Aquarius for observers along a path across S Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.14 mag to 13.09 mag (the magnitude of the asteroid) for at most 4.670 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: 2022 May 10, 03:00 - 2022 May 10, 03:07 * geocentric midpoint of event [JD]: 2459709.62763995 * magnitude of target star: 12.42 * magnitude drop [mag]: 1.14 * estimated maximum duration [s]: 4.670 * Moon: 60 % sunlit, 166° distance * Sun: 65° distance * rough path description: S Africa The occultation path -------------------- * approximate projected width [km]: 148 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.018) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.002", 50°) * approx speed of asteroid's shadow [km/s]: 31.5105 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 393-135091 by 804 Hispania on 2022 May 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 - 21 0 0 -32 35 40 3 0 26.4 1 103 -63 -33 16 44 -31 54 39 -33 22 52 -31 48 32 .... - 20 0 0 -32 47 20 3 0 26.5 1 103 -62 -33 28 19 -32 6 23 -33 34 26 -32 0 17 0.11 - 19 0 0 -32 58 31 3 0 26.6 2 102 -61 -33 39 26 -32 17 39 -33 45 32 -32 11 34 0.10 - 18 0 0 -33 9 16 3 0 26.7 3 101 -60 -33 50 6 -32 28 27 -33 56 11 -32 22 23 0.09 - 17 0 0 -33 19 33 3 0 26.9 4 101 -60 -34 0 19 -32 38 49 -34 6 23 -32 32 45 0.09 - 16 0 0 -33 29 22 3 0 27.1 5 100 -59 -34 10 4 -32 48 42 -34 16 8 -32 42 39 0.09 - 15 0 0 -33 38 44 3 0 27.4 6 100 -58 -34 19 22 -32 58 8 -34 25 26 -32 52 6 0.09 - 14 0 0 -33 47 39 3 0 27.8 7 99 -57 -34 28 14 -33 7 7 -34 34 17 -33 1 5 0.09 - 13 0 0 -33 56 7 3 0 28.1 7 99 -56 -34 36 38 -33 15 39 -34 42 40 -33 9 37 0.09 - 12 0 0 -34 4 8 3 0 28.5 8 98 -55 -34 44 36 -33 23 43 -34 50 37 -33 17 42 0.08 - 11 0 0 -34 11 42 3 0 29.0 9 98 -55 -34 52 6 -33 31 20 -34 58 7 -33 25 19 0.08 - 10 0 0 -34 18 49 3 0 29.5 10 97 -54 -34 59 10 -33 38 30 -35 5 11 -33 32 30 0.08 - 9 0 0 -34 25 29 3 0 30.0 11 96 -53 -35 5 47 -33 45 13 -35 11 48 -33 39 13 0.08 - 8 0 0 -34 31 42 3 0 30.6 12 96 -52 -35 11 58 -33 51 29 -35 17 58 -33 45 29 0.08 - 7 0 0 -34 37 29 3 0 31.2 12 95 -51 -35 17 42 -33 57 18 -35 23 41 -33 51 19 0.08 - 6 0 0 -34 42 48 3 0 31.8 13 95 -51 -35 22 59 -34 2 40 -35 28 59 -33 56 41 0.08 - 5 0 0 -34 47 42 3 0 32.5 14 94 -50 -35 27 50 -34 7 35 -35 33 49 -34 1 37 0.08 - 4 0 0 -34 52 8 3 0 33.3 15 94 -49 -35 32 15 -34 12 4 -35 38 13 -34 6 6 0.08 - 3 0 0 -34 56 8 3 0 34.1 16 93 -48 -35 36 13 -34 16 5 -35 42 11 -34 10 8 0.08 - 2 0 0 -34 59 42 3 0 34.9 17 92 -47 -35 39 45 -34 19 40 -35 45 43 -34 13 43 0.08 - 1 0 0 -35 2 48 3 0 35.7 17 92 -46 -35 42 50 -34 22 49 -35 48 48 -34 16 51 0.08 0 0 0 -35 5 29 3 0 36.6 18 91 -46 -35 45 30 -34 25 30 -35 51 27 -34 19 33 0.08 1 0 0 -35 7 43 3 0 37.6 19 91 -45 -35 47 42 -34 27 45 -35 53 40 -34 21 48 0.08 2 0 0 -35 9 30 3 0 38.5 20 90 -44 -35 49 29 -34 29 33 -35 55 27 -34 23 37 0.08 3 0 0 -35 10 51 3 0 39.5 21 90 -43 -35 50 50 -34 30 55 -35 56 47 -34 24 58 0.08 4 0 0 -35 11 46 3 0 40.6 22 89 -42 -35 51 44 -34 31 50 -35 57 41 -34 25 53 0.08 5 0 0 -35 12 14 3 0 41.7 22 88 -42 -35 52 12 -34 32 18 -35 58 9 -34 26 22 0.08 6 0 0 -35 12 16 3 0 42.8 23 88 -41 -35 52 13 -34 32 20 -35 58 10 -34 26 23 0.08 7 0 0 -35 11 51 3 0 44.0 24 87 -40 -35 51 49 -34 31 55 -35 57 46 -34 25 58 0.08 8 0 0 -35 10 59 3 0 45.2 25 87 -39 -35 50 58 -34 31 3 -35 56 55 -34 25 7 0.08 9 0 0 -35 9 42 3 0 46.4 26 86 -38 -35 49 40 -34 29 45 -35 55 38 -34 23 48 0.08 10 0 0 -35 7 57 3 0 47.7 26 85 -37 -35 47 57 -34 28 0 -35 53 54 -34 22 3 0.08 11 0 0 -35 5 46 3 0 49.0 27 85 -37 -35 45 47 -34 25 48 -35 51 45 -34 19 51 0.08 12 0 0 -35 3 9 3 0 50.4 28 84 -36 -35 43 11 -34 23 9 -35 49 8 -34 17 12 0.08 13 0 0 -35 0 5 3 0 51.8 29 84 -35 -35 40 8 -34 20 4 -35 46 6 -34 14 7 0.08 14 0 0 -34 56 34 3 0 53.2 30 83 -34 -35 36 38 -34 16 32 -35 42 37 -34 10 34 0.08 15 0 0 -34 52 36 3 0 54.7 31 82 -33 -35 32 42 -34 12 32 -35 38 41 -34 6 34 0.08 16 0 0 -34 48 12 3 0 56.2 31 82 -33 -35 28 20 -34 8 6 -35 34 19 -34 2 8 0.08 17 0 0 -34 43 21 3 0 57.8 32 81 -32 -35 23 31 -34 3 12 -35 29 30 -33 57 14 0.08 18 0 0 -34 38 2 3 0 59.4 33 81 -31 -35 18 15 -33 57 52 -35 24 14 -33 51 53 0.08 19 0 0 -34 32 17 3 1 1.0 34 80 -30 -35 12 32 -33 52 4 -35 18 32 -33 46 5 0.08 20 0 0 -34 26 5 3 1 2.7 35 79 -29 -35 6 22 -33 45 49 -35 12 22 -33 39 49 0.08 21 0 0 -34 19 25 3 1 4.4 36 79 -28 -34 59 45 -33 39 6 -35 5 46 -33 33 6 0.08 22 0 0 -34 12 18 3 1 6.1 36 78 -28 -34 52 42 -33 31 57 -34 58 43 -33 25 56 0.08 23 0 0 -34 4 44 3 1 7.9 37 78 -27 -34 45 11 -33 24 19 -34 51 12 -33 18 18 0.08 24 0 0 -33 56 42 3 1 9.8 38 77 -26 -34 37 12 -33 16 14 -34 43 15 -33 10 12 0.08 25 0 0 -33 48 13 3 1 11.6 39 76 -25 -34 28 47 -33 7 41 -34 34 49 -33 1 39 0.08 26 0 0 -33 39 16 3 1 13.5 40 76 -24 -34 19 54 -32 58 40 -34 25 57 -32 52 38 0.08 27 0 0 -33 29 51 3 1 15.5 41 75 -23 -34 10 33 -32 49 12 -34 16 37 -32 43 9 0.08 28 0 0 -33 19 59 3 1 17.5 41 75 -22 -34 0 44 -32 39 15 -34 6 49 -32 33 11 0.08 29 0 0 -33 9 38 3 1 19.5 42 74 -22 -33 50 28 -32 28 50 -33 56 33 -32 22 46 0.08 30 0 0 -32 58 50 3 1 21.6 43 73 -21 -33 39 44 -32 17 57 -33 45 50 -32 11 52 0.08 31 0 0 -32 47 33 3 1 23.7 44 73 -20 -33 28 32 -32 6 36 -33 34 39 -32 0 30 0.08 32 0 0 -32 35 48 3 1 25.9 45 72 -19 -33 16 52 -31 54 46 -33 22 59 -31 48 39 0.08 33 0 0 -32 23 34 3 1 28.1 46 72 -18 -33 4 43 -31 42 27 -33 10 51 -31 36 20 0.08 34 0 0 -32 10 52 3 1 30.4 47 71 -17 -32 52 7 -31 29 40 -32 58 15 -31 23 32 0.08 35 0 0 -31 57 42 3 1 32.7 48 70 -16 -32 39 1 -31 16 24 -32 45 11 -31 10 16 0.08 36 0 0 -31 44 2 3 1 35.0 48 70 -15 -32 25 27 -31 2 40 -32 31 38 -30 56 30 0.08 37 0 0 -31 29 54 3 1 37.4 49 69 -15 -32 11 25 -30 48 26 -32 17 36 -30 42 15 0.08 38 0 0 -31 15 17 3 1 39.8 50 69 -14 -31 56 53 -30 33 43 -32 3 5 -30 27 32 0.08 39 0 0 -31 0 11 3 1 42.3 51 68 -13 -31 41 53 -30 18 31 -31 48 6 -30 12 19 0.08 40 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7 9.6 1 257 65 22 35 38 23 57 42 22 29 31 24 3 48 0.21 Uncertainty in time = +/- 2 secs Prediction of 2022 Apr 15.8 Data for the target star ------------------------ * name: UCAC4 393-135091 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 23 13 23.2654 DE: -11 28 59.337 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 23 13 23.2655 DE: -11 28 59.336 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (804) Hispania asteroid class: approx. diameter [km]: 147 approx. diameter ["]: 0.075 distance from Earth [AU]: 2.70030 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#99 date of fit: 2022 Apr 12 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): 0.027", 0.002", 50.257° remarks: * orbital elements for (804)Hispania : Mean anomaly = 352.3158711648 deg Arg. of pericenter = 344.6738084311 deg Long. of node = 347.5882849528 deg Inclination = 15.3988416268 deg Eccentricity = 0.1414102831 Semimajor axis = 2.8385003727 AU Perihelion dist = 2.4371072315 AU Mag: H = 7.93, G = 0.18 Epoch of elements : MJD 59709.12763889 TDT (2022 May 10.1276) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#992022Apr12,4.67,2022,5,10,3.063359,0.038592,-0.070041,15.641712,8.465049,-0.004466,-0.002171,-0.000001,0.000000 74.7813,-11.3636,133.17,17.60,False UCAC4 393-135091,23.22312928,-11.4831491,0.00,12.42,0.00,0.0,0,K,23.24215558,-11.3635873,1.14,0.00,0,0,0 804,Hispania,13.09,147.2,2.7003,0,0,3.465,27.57,,7.4 0,352.2896,2022,5,10,344.6738,347.5883,15.3988,0.14141,2.83850,2.43711,7.93,5.0,0.15 1.074,0.0273,0.0016,50,0.0056,Known errors,-1.00,-1,-1,-1 20220510_135091,59684.83 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Apr 15, 19:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org