IOTA/IOTA-ES occultation update for (7352) 1994CO / UCAC4 362-187338 event on 2022 Jun 23, 03:39 UT Visible from Africa, South America Summary ------- On 2022 Jun 23 UT, the 46.5 km diameter asteroid (7352) 1994CO will occult a 12.2 mag star in the constellation Sagittarius for observers along a path across Africa, South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.68 mag to 16.89 mag (the magnitude of the asteroid) for at most 3.320 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: 97 * date and approx. time of event: 2022 Jun 23, 03:31 - 2022 Jun 23, 03:46 * geocentric midpoint of event [JD]: 2459753.65233104 * magnitude of target star: 12.22 * magnitude drop [mag]: 4.68 * estimated maximum duration [s]: 3.320 * Moon: 29 % sunlit, 94° distance * Sun: 159° distance * rough path description: Africa, South America The occultation path -------------------- * approximate projected width [km]: 47 * 1 sigma uncertainty interval [path widths]: +/- 0.38 * 1 sigma uncertainty interval [seconds]: +/- 4.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.004", 89°) * approx speed of asteroid's shadow [km/s]: 13.9881 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 362-187338 by 7352 1994CO on 2022 Jun 23 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 -125 0 0 - 2 51 33 3 46 48.6 0 108 -21 - 2 38 1 - 3 5 3 - 2 27 47 - 3 15 16 .... -124 0 0 - 3 10 37 3 46 48.4 1 108 -22 - 2 57 7 - 3 24 7 - 2 46 54 - 3 34 19 -0.04 -123 0 0 - 3 29 23 3 46 48.2 2 108 -23 - 3 15 54 - 3 42 51 - 3 5 41 - 3 53 2 -0.11 -122 0 0 - 3 47 49 3 46 47.7 3 108 -24 - 3 34 22 - 4 1 16 - 3 24 10 - 4 11 27 -0.14 -121 0 0 - 4 5 56 3 46 47.2 4 108 -25 - 3 52 30 - 4 19 22 - 3 42 19 - 4 29 31 -0.16 -120 0 0 - 4 23 43 3 46 46.4 5 107 -26 - 4 10 18 - 4 37 8 - 4 0 8 - 4 47 16 -0.17 -119 0 0 - 4 41 10 3 46 45.6 7 107 -27 - 4 27 46 - 4 54 33 - 4 17 37 - 5 4 41 -0.17 -118 0 0 - 4 58 17 3 46 44.5 8 107 -28 - 4 44 54 - 5 11 39 - 4 34 46 - 5 21 46 -0.18 -117 0 0 - 5 15 3 3 46 43.4 9 107 -29 - 5 1 42 - 5 28 24 - 4 51 35 - 5 38 30 -0.18 -116 0 0 - 5 31 29 3 46 42.0 10 107 -30 - 5 18 9 - 5 44 49 - 5 8 2 - 5 54 54 -0.18 -115 0 0 - 5 47 34 3 46 40.6 11 107 -31 - 5 34 15 - 6 0 53 - 5 24 9 - 6 10 57 -0.18 -114 0 0 - 6 3 18 3 46 39.0 12 107 -32 - 5 50 0 - 6 16 35 - 5 39 55 - 6 26 38 -0.19 -113 0 0 - 6 18 41 3 46 37.2 13 107 -33 - 6 5 24 - 6 31 57 - 5 55 20 - 6 41 59 -0.19 -112 0 0 - 6 33 42 3 46 35.4 14 107 -34 - 6 20 26 - 6 46 57 - 6 10 23 - 6 56 58 -0.19 -111 0 0 - 6 48 22 3 46 33.3 15 107 -35 - 6 35 7 - 7 1 36 - 6 25 5 - 7 11 36 -0.19 -110 0 0 - 7 2 40 3 46 31.2 16 107 -36 - 6 49 27 - 7 15 53 - 6 39 25 - 7 25 53 -0.19 -109 0 0 - 7 16 36 3 46 28.9 17 106 -37 - 7 3 24 - 7 29 48 - 6 53 24 - 7 39 47 -0.19 -108 0 0 - 7 30 11 3 46 26.5 18 106 -38 - 7 17 0 - 7 43 22 - 7 7 0 - 7 53 20 -0.19 -107 0 0 - 7 43 24 3 46 23.9 19 106 -39 - 7 30 13 - 7 56 33 - 7 20 15 - 8 6 31 -0.19 -106 0 0 - 7 56 14 3 46 21.2 20 106 -40 - 7 43 5 - 8 9 23 - 7 33 7 - 8 19 19 -0.19 -105 0 0 - 8 8 42 3 46 18.4 21 106 -41 - 7 55 34 - 8 21 50 - 7 45 37 - 8 31 46 -0.19 -104 0 0 - 8 20 48 3 46 15.5 22 106 -42 - 8 7 41 - 8 33 55 - 7 57 45 - 8 43 50 -0.19 -103 0 0 - 8 32 32 3 46 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33 57 6 6 15 6 44 27 5 55 46 -0.20 7 0 0 6 43 58 3 34 10.9 45 237 -24 6 57 49 6 30 6 7 8 20 6 19 38 -0.20 8 0 0 7 7 56 3 34 4.9 44 237 -23 7 21 48 6 54 4 7 32 19 6 43 35 -0.20 9 0 0 7 31 59 3 33 59.1 43 237 -22 7 45 52 7 18 7 7 56 23 7 7 37 -0.20 10 0 0 7 56 7 3 33 53.3 42 237 -21 8 10 1 7 42 15 8 20 33 7 31 44 -0.20 11 0 0 8 20 20 3 33 47.7 41 238 -20 8 34 14 8 6 27 8 44 46 7 55 56 -0.20 12 0 0 8 44 36 3 33 42.2 40 238 -19 8 58 31 8 30 42 9 9 3 8 20 12 -0.20 13 0 0 9 8 56 3 33 36.8 39 238 -18 9 22 50 8 55 1 9 33 23 8 44 30 -0.20 14 0 0 9 33 17 3 33 31.6 38 239 -17 9 47 13 9 19 23 9 57 45 9 8 52 -0.20 15 0 0 9 57 42 3 33 26.5 37 239 -16 10 11 37 9 43 47 10 22 10 9 33 15 -0.20 16 0 0 10 22 7 3 33 21.4 36 239 -15 10 36 3 10 8 12 10 46 36 9 57 40 -0.20 17 0 0 10 46 33 3 33 16.6 35 239 -14 11 0 29 10 32 38 11 11 3 10 22 6 -0.20 18 0 0 11 11 0 3 33 11.8 34 240 -13 11 24 56 10 57 5 11 35 30 10 46 33 -0.20 19 0 0 11 35 26 3 33 7.2 33 240 -12 11 49 23 11 21 31 11 59 56 11 10 59 -0.20 20 0 0 11 59 52 3 33 2.7 32 240 -11 12 13 48 11 45 56 12 24 22 11 35 24 -0.20 21 0 0 12 24 16 3 32 58.3 31 241 -10 12 38 13 12 10 21 12 48 46 11 59 48 -0.20 22 0 0 12 48 38 3 32 54.1 30 241 -9 13 2 35 12 34 43 13 13 9 12 24 11 -0.20 23 0 0 13 12 58 3 32 50.0 29 241 -8 13 26 55 12 59 3 13 37 28 12 48 30 -0.20 24 0 0 13 37 15 3 32 46.1 27 241 -6 13 51 11 13 23 19 14 1 45 13 12 47 -0.20 25 0 0 14 1 28 3 32 42.3 26 242 -5 14 15 24 13 47 32 14 25 57 13 37 0 -0.20 26 0 0 14 25 36 3 32 38.6 25 242 -4 14 39 32 14 11 41 14 50 6 14 1 9 -0.20 27 0 0 14 49 40 3 32 35.1 24 242 -3 15 3 36 14 35 45 15 14 9 14 25 14 -0.20 28 0 0 15 13 39 3 32 31.7 23 243 -2 15 27 34 14 59 44 15 38 8 14 49 13 -0.20 29 0 0 15 37 32 3 32 28.4 22 243 -1 15 51 27 15 23 37 16 2 0 15 13 6 -0.20 30 0 0 16 1 18 3 32 25.3 21 243 0 16 15 13 15 47 24 16 25 45 15 36 53 -0.20 31 0 0 16 24 57 3 32 22.4 20 243 1 16 38 52 16 11 3 16 49 24 16 0 33 -0.20 32 0 0 16 48 29 3 32 19.6 19 244 2 17 2 23 16 34 36 17 12 55 16 24 5 -0.20 33 0 0 17 11 53 3 32 16.9 18 244 3 17 25 46 16 58 0 17 36 18 16 47 30 -0.20 34 0 0 17 35 8 3 32 14.4 17 244 4 17 49 1 17 21 16 17 59 32 17 10 46 -0.20 35 0 0 17 58 14 3 32 12.0 16 245 5 18 12 7 17 44 22 18 22 38 17 33 53 -0.20 36 0 0 18 21 11 3 32 9.8 15 245 6 18 35 3 18 7 20 18 45 33 17 56 51 -0.20 37 0 0 18 43 58 3 32 7.7 14 245 7 18 57 49 18 30 7 19 8 19 18 19 39 -0.20 38 0 0 19 6 34 3 32 5.8 13 246 8 19 20 25 18 52 44 19 30 54 18 42 16 -0.20 39 0 0 19 28 59 3 32 4.0 12 246 9 19 42 49 19 15 10 19 53 18 19 4 43 -0.20 40 0 0 19 51 13 3 32 2.4 11 246 10 20 5 2 19 37 25 20 15 31 19 26 58 -0.20 41 0 0 20 13 15 3 32 0.9 10 247 11 20 27 4 19 59 27 20 37 31 19 49 1 -0.20 42 0 0 20 35 5 3 31 59.5 9 247 12 20 48 53 20 21 18 20 59 20 20 10 52 -0.20 43 0 0 20 56 42 3 31 58.3 8 247 13 21 10 29 20 42 56 21 20 55 20 32 31 -0.20 44 0 0 21 18 6 3 31 57.2 7 248 14 21 31 52 21 4 21 21 42 18 20 53 56 -0.20 45 0 0 21 39 16 3 31 56.3 6 248 15 21 53 1 21 25 32 22 3 26 21 15 8 -0.20 46 0 0 22 0 13 3 31 55.5 5 249 16 22 13 57 21 46 29 22 24 21 21 36 6 -0.20 47 0 0 22 20 55 3 31 54.9 4 249 17 22 34 38 22 7 12 22 45 2 21 56 50 -0.20 48 0 0 22 41 22 3 31 54.4 3 249 18 22 55 5 22 27 41 23 5 27 22 17 19 -0.20 49 0 0 23 1 35 3 31 54.0 2 250 19 23 15 16 22 47 54 23 25 38 22 37 34 -0.20 50 0 0 23 21 32 3 31 53.8 1 250 20 23 35 12 23 7 53 23 45 34 22 57 33 -0.19 51 0 0 23 41 13 3 31 53.6 0 250 21 23 54 53 23 27 35 24 5 13 23 17 16 -0.13 Uncertainty in time = +/- 5 secs Prediction of 2022 Jun 13.8 Data for the target star ------------------------ * name: UCAC4 362-187338 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 33 09.6277 DE: -17 46 56.235 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 33 09.6277 DE: -17 46 56.235 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7352) 1994CO asteroid class: approx. diameter [km]: 47 approx. diameter ["]: 0.016 distance from Earth [AU]: 3.99540 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 date of fit: 2022 Jun 07 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): 0.022", 0.004", 89.002° remarks: * orbital elements for (7352)1994CO : Mean anomaly = 27.0252467017 deg Arg. of pericenter = 128.3873816805 deg Long. of node = 130.3341551490 deg Inclination = 8.1832361491 deg Eccentricity = 0.0375382001 Semimajor axis = 5.1266974599 AU Perihelion dist = 4.9342504648 AU Mag: H = 10.06, G = 0.15 Epoch of elements : MJD 59753.15222222 TDT (2022 Jun 23.1522) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492022Jun07,3.32,2022,6,23,3.655945,-0.046690,0.185048,-7.664253,-1.895934,-0.001999,-0.000693,0.000001,0.000000 -32.5163,-17.7337,125.71,23.43,False UCAC4 362-187338,19.55267435,-17.7822876,0.00,12.22,0.00,0.0,0,,19.57444753,-17.7337469,4.69,0.00,0,0,1 7352,1994CO,16.89,46.5,3.9954,0,0,-1.180,-4.17,,3.4 0,27.0123,2022,6,23,128.3874,130.3342,8.1832,0.03754,5.12670,4.93425,10.03,5.0,0.15 1.379,0.0220,0.0037,89,0.0061,Known errors,-1.00,-1,-1,-1 20220623_187338,59743.85 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Jun 13, 20:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org