IOTA/IOTA-ES occultation update for (93) Minerva / UCAC4 298-195956 event on 2022 Feb 27, 09:12 UT Visible from South America Summary ------- On 2022 Feb 27 UT, the 142 km diameter asteroid (93) Minerva will occult a 10.0 mag star in the constellation Sagittarius for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.09 mag to 13.01 mag (the magnitude of the asteroid) for at most 4.280 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 Feb 27, 09:09 - 2022 Feb 27, 09:15 * geocentric midpoint of event [JD]: 2459637.88362083 * magnitude of target star: 9.98 * magnitude drop [mag]: 3.09 * estimated maximum duration [s]: 4.280 * Moon: 14 % sunlit, 19° distance * Sun: 64° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 150 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 1.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.032, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.032", 0.001", 88°) * approx speed of asteroid's shadow [km/s]: 33.2133 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 298-195956 by 93 Minerva #1 on 2022 Feb 27 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 -116 0 0 -13 12 24 9 9 23.0 1 121 -62 -14 0 20 -12 24 45 -14 3 23 -12 21 43 .... -115 0 0 -13 48 30 9 9 23.1 2 121 -61 -14 36 30 -13 0 45 -14 39 34 -12 57 44 0.34 -114 0 0 -14 24 43 9 9 23.2 3 121 -60 -15 12 48 -13 36 53 -15 15 52 -13 33 52 0.34 -113 0 0 -15 1 2 9 9 23.5 4 121 -59 -15 49 12 -14 13 9 -15 52 16 -14 10 7 0.34 -112 0 0 -15 37 27 9 9 23.8 5 120 -58 -16 25 40 -14 49 29 -16 28 45 -14 46 27 0.34 -111 0 0 -16 13 56 9 9 24.2 6 120 -56 -17 2 13 -15 25 55 -17 5 17 -15 22 52 0.34 -110 0 0 -16 50 27 9 9 24.7 7 120 -55 -17 38 48 -16 2 23 -17 41 53 -15 59 20 0.34 -109 0 0 -17 27 0 9 9 25.2 9 119 -54 -18 15 24 -16 38 53 -18 18 29 -16 35 50 0.34 -108 0 0 -18 3 34 9 9 25.9 10 119 -53 -18 52 0 -17 15 24 -18 55 6 -17 12 21 0.34 -107 0 0 -18 40 7 9 9 26.6 11 119 -52 -19 28 36 -17 51 55 -19 31 41 -17 48 52 0.34 -106 0 0 -19 16 38 9 9 27.4 12 118 -51 -20 5 8 -18 28 24 -20 8 14 -18 25 20 0.34 -105 0 0 -19 53 5 9 9 28.2 13 118 -50 -20 41 37 -19 4 50 -20 44 43 -19 1 46 0.34 -104 0 0 -20 29 28 9 9 29.2 14 118 -49 -21 18 2 -19 41 12 -21 21 7 -19 38 8 0.34 -103 0 0 -21 5 46 9 9 30.2 15 117 -48 -21 54 20 -20 17 28 -21 57 25 -20 14 25 0.34 -102 0 0 -21 41 56 9 9 31.2 16 117 -47 -22 30 30 -20 53 38 -22 33 36 -20 50 35 0.34 -101 0 0 -22 17 58 9 9 32.4 17 117 -45 -23 6 33 -21 29 41 -23 9 39 -21 26 37 0.34 -100 0 0 -22 53 52 9 9 33.6 19 116 -44 -23 42 26 -22 5 34 -23 45 31 -22 2 30 0.34 - 99 0 0 -23 29 34 9 9 34.9 20 116 -43 -24 18 8 -22 41 18 -24 21 13 -22 38 14 0.34 - 98 0 0 -24 5 6 9 9 36.2 21 115 -42 -24 53 38 -23 16 50 -24 56 43 -23 13 47 0.34 - 97 0 0 -24 40 24 9 9 37.6 22 115 -41 -25 28 55 -23 52 10 -25 32 1 -23 49 7 0.34 - 96 0 0 -25 15 30 9 9 39.1 23 114 -40 -26 3 58 -24 27 17 -26 7 4 -24 24 14 0.34 - 95 0 0 -25 50 20 9 9 40.6 24 114 -39 -26 38 46 -25 2 10 -26 41 52 -24 59 7 0.34 - 94 0 0 -26 24 55 9 9 42.2 25 113 -38 -27 13 18 -25 36 47 -27 16 23 -25 33 44 0.34 - 93 0 0 -26 59 13 9 9 43.8 26 113 -37 -27 47 33 -26 11 8 -27 50 38 -26 8 6 0.34 - 92 0 0 -27 33 13 9 9 45.5 27 112 -36 -28 21 30 -26 45 12 -28 24 35 -26 42 10 0.34 - 91 0 0 -28 6 55 9 9 47.2 28 112 -35 -28 55 9 -27 18 58 -28 58 13 -27 15 55 0.34 - 90 0 0 -28 40 18 9 9 49.0 29 111 -34 -29 28 27 -27 52 24 -29 31 31 -27 49 22 0.34 - 89 0 0 -29 13 20 9 9 50.8 30 110 -33 -30 1 25 -28 25 31 -30 4 29 -28 22 29 0.34 - 88 0 0 -29 46 1 9 9 52.7 31 110 -32 -30 34 2 -28 58 17 -30 37 5 -28 55 15 0.34 - 87 0 0 -30 18 21 9 9 54.6 32 109 -31 -31 6 16 -29 30 42 -31 9 19 -29 27 40 0.34 - 86 0 0 -30 50 18 9 9 56.5 33 109 -29 -31 38 8 -30 2 44 -31 41 11 -29 59 43 0.34 - 85 0 0 -31 21 52 9 9 58.5 34 108 -28 -32 9 36 -30 34 23 -32 12 39 -30 31 23 0.34 - 84 0 0 -31 53 2 9 10 0.5 35 107 -27 -32 40 41 -31 5 39 -32 43 43 -31 2 39 0.34 - 83 0 0 -32 23 48 9 10 2.6 36 106 -26 -33 11 20 -31 36 31 -33 14 22 -31 33 32 0.34 - 82 0 0 -32 54 9 9 10 4.7 37 106 -25 -33 41 35 -32 6 58 -33 44 36 -32 3 59 0.34 - 81 0 0 -33 24 4 9 10 6.8 38 105 -25 -34 11 23 -32 37 0 -34 14 24 -32 34 2 0.34 - 80 0 0 -33 53 34 9 10 8.9 39 104 -24 -34 40 46 -33 6 37 -34 43 46 -33 3 38 0.34 - 79 0 0 -34 22 37 9 10 11.1 40 103 -23 -35 9 42 -33 35 47 -35 12 42 -33 32 49 0.34 - 78 0 0 -34 51 13 9 10 13.3 41 103 -22 -35 38 11 -34 4 30 -35 41 10 -34 1 33 0.34 - 77 0 0 -35 19 22 9 10 15.5 42 102 -21 -36 6 13 -34 32 47 -36 9 12 -34 29 50 0.34 - 76 0 0 -35 47 4 9 10 17.8 43 101 -20 -36 33 47 -35 0 36 -36 36 45 -34 57 40 0.34 - 75 0 0 -36 14 18 9 10 20.0 43 100 -19 -37 0 53 -35 27 58 -37 3 51 -35 25 2 0.34 - 74 0 0 -36 41 4 9 10 22.3 44 99 -18 -37 27 31 -35 54 52 -37 30 28 -35 51 56 0.34 - 73 0 0 -37 7 22 9 10 24.6 45 98 -17 -37 53 40 -36 21 18 -37 56 38 -36 18 22 0.34 - 72 0 0 -37 33 11 9 10 26.9 46 97 -16 -38 19 22 -36 47 15 -38 22 18 -36 44 20 0.34 - 71 0 0 -37 58 32 9 10 29.2 47 96 -15 -38 44 34 -37 12 44 -38 47 30 -37 9 50 0.34 - 70 0 0 -38 23 24 9 10 31.6 48 95 -14 -39 9 18 -37 37 44 -39 12 13 -37 34 51 0.34 - 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57 44 -40 31 14 -38 54 52 0.35 43 0 0 -39 19 42 9 14 41.8 38 259 59 -40 5 15 -38 34 22 -40 8 10 -38 31 30 0.35 44 0 0 -38 56 0 9 14 43.7 38 258 59 -39 41 42 -38 10 32 -39 44 37 -38 7 39 0.35 45 0 0 -38 31 49 9 14 45.6 37 257 60 -39 17 40 -37 46 13 -39 20 35 -37 43 19 0.35 46 0 0 -38 7 10 9 14 47.5 36 257 60 -38 53 9 -37 21 25 -38 56 5 -37 18 31 0.35 47 0 0 -37 42 2 9 14 49.3 35 256 61 -38 28 9 -36 56 9 -38 31 6 -36 53 15 0.35 48 0 0 -37 16 26 9 14 51.2 34 255 61 -38 2 41 -36 30 25 -38 5 38 -36 27 30 0.35 49 0 0 -36 50 21 9 14 53.0 33 254 61 -37 36 45 -36 4 12 -37 39 42 -36 1 17 0.35 50 0 0 -36 23 49 9 14 54.7 32 254 61 -37 10 20 -35 37 32 -37 13 18 -35 34 36 0.35 51 0 0 -35 56 48 9 14 56.5 31 253 62 -36 43 27 -35 10 24 -36 46 25 -35 7 27 0.35 52 0 0 -35 29 20 9 14 58.2 31 252 62 -36 16 6 -34 42 48 -36 19 5 -34 39 51 0.35 53 0 0 -35 1 24 9 14 59.9 30 252 62 -35 48 18 -34 14 45 -35 51 17 -34 11 47 0.35 54 0 0 -34 33 2 9 15 1.5 29 251 62 -35 20 3 -33 46 15 -35 23 3 -33 43 17 0.35 55 0 0 -34 4 12 9 15 3.1 28 250 62 -34 51 21 -33 17 19 -34 54 21 -33 14 20 0.35 56 0 0 -33 34 57 9 15 4.7 27 250 63 -34 22 12 -32 47 56 -34 25 13 -32 44 57 0.35 57 0 0 -33 5 15 9 15 6.2 26 249 63 -33 52 37 -32 18 8 -33 55 38 -32 15 9 0.36 58 0 0 -32 35 8 9 15 7.7 25 248 63 -33 22 36 -31 47 55 -33 25 38 -31 44 55 0.36 59 0 0 -32 4 36 9 15 9.2 24 248 63 -32 52 11 -31 17 17 -32 55 13 -31 14 17 0.36 60 0 0 -31 33 40 9 15 10.6 23 247 63 -32 21 20 -30 46 15 -32 24 23 -30 43 14 0.36 61 0 0 -31 2 20 9 15 12.0 22 247 63 -31 50 6 -30 14 49 -31 53 9 -30 11 48 0.36 62 0 0 -30 30 37 9 15 13.3 21 246 62 -31 18 28 -29 43 1 -31 21 31 -29 40 0 0.36 63 0 0 -29 58 31 9 15 14.5 20 245 62 -30 46 28 -29 10 50 -30 49 31 -29 7 49 0.36 64 0 0 -29 26 3 9 15 15.8 19 245 62 -30 14 5 -28 38 18 -30 17 8 -28 35 16 0.36 65 0 0 -28 53 15 9 15 16.9 18 244 62 -29 41 21 -28 5 25 -29 44 24 -28 2 23 0.36 66 0 0 -28 20 6 9 15 18.0 17 244 61 -29 8 16 -27 32 11 -29 11 20 -27 29 9 0.37 67 0 0 -27 46 37 9 15 19.1 16 243 61 -28 34 51 -26 58 39 -28 37 55 -26 55 37 0.37 68 0 0 -27 12 50 9 15 20.0 15 243 61 -28 1 7 -26 24 49 -28 4 12 -26 21 46 0.37 69 0 0 -26 38 45 9 15 21.0 14 242 60 -27 27 5 -25 50 41 -27 30 10 -25 47 38 0.37 70 0 0 -26 4 23 9 15 21.8 13 242 60 -26 52 46 -25 16 16 -26 55 51 -25 13 13 0.37 71 0 0 -25 29 45 9 15 22.6 12 242 59 -26 18 11 -24 41 36 -26 21 16 -24 38 33 0.38 72 0 0 -24 54 53 9 15 23.4 10 241 59 -25 43 20 -24 6 41 -25 46 26 -24 3 38 0.38 73 0 0 -24 19 46 9 15 24.0 9 241 58 -25 8 15 -23 31 33 -25 11 21 -23 28 30 0.38 74 0 0 -23 44 27 9 15 24.6 8 240 58 -24 32 57 -22 56 13 -24 36 3 -22 53 9 0.39 75 0 0 -23 8 55 9 15 25.2 7 240 57 -23 57 27 -22 20 41 -24 0 32 -22 17 37 0.40 76 0 0 -22 33 13 9 15 25.6 6 239 56 -23 21 45 -21 44 58 -23 24 51 -21 41 55 0.41 77 0 0 -21 57 22 9 15 26.0 5 239 56 -22 45 54 -21 9 7 -22 48 59 -21 6 3 0.42 78 0 0 -21 21 22 9 15 26.3 4 239 55 -22 9 54 -20 33 7 -22 12 59 -20 30 3 0.44 79 0 0 -20 45 15 9 15 26.5 3 238 54 -21 33 46 -19 57 0 -21 36 51 -19 53 57 0.48 80 0 0 -20 9 1 9 15 26.7 2 238 54 -20 57 31 -19 20 48 -21 0 37 -19 17 45 0.57 81 0 0 -19 32 43 9 15 26.8 1 238 53 -20 21 12 -18 44 31 -20 24 17 -18 41 28 1.01 Uncertainty in time = +/- 1 secs Prediction of 2021 Dec 31.0 Data for the target star ------------------------ * name: UCAC4 298-195956 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 21 41.6365 DE: -30 32 26.277 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 21 41.6365 DE: -30 32 26.277 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 10.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (93) Minerva asteroid class: asteroid system: multiple bodies approx. diameter [km]: 142 approx. diameter ["]: 0.073 distance from Earth [AU]: 2.66640 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#126 date of fit: 2021 Oct 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", 0.001", 88.081° remarks: * orbital elements for (93)Minerva : Mean anomaly = 340.2206844302 deg Arg. of pericenter = 275.1773074922 deg Long. of node = 4.0231514165 deg Inclination = 8.5584822214 deg Eccentricity = 0.1389135935 Semimajor axis = 2.7549137986 AU Perihelion dist = 2.3722188229 AU Mag: H = 7.92, G = 0.15 Epoch of elements : MJD 59637.38361111 TDT (2022 Feb 27.3836) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1262021Oct07 Binary solution 1 : Kepler,4.28,2022,2,27,9.2069,-0.020209,-0.318965,18.707511,-1.208651,-0.005118,-0.000524,-0.000001,0.000000 -19.5182,-30.5297,45.07,-8.29,False UCAC4 298-195956,18.36156564,-30.5406326,0.00,9.98,0.00,0.0,4,,18.38484471,-30.5297070,3.09,0.00,0,0,0 93,Minerva #1,13.01,142.0,2.6664,0,2,4.777,-3.98,,4.0 Aegis,3.6,623.500,2.406000,,89.00,2455059.40,,82.00,126.00, Gorgoneion,3.2,375,1.114700,0.0500,91.40,2455059.30,,347.50,132.60, 0,340.1380,2022,2,27,275.1773,4.0232,8.5585,0.13891,2.75491,2.37222,7.92,5.0,0.15 1.032,0.0223,0.0008,88,0.0023,Known errors + binary orbit,-1.00,-1,-1,-1 20220227_195956_Ma1,59579.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2021 Dec 31, 01:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org