IOTA/IOTA-ES occultation update for (12894) 1998 QN73 / UCAC4 370-168241 event on 2024 Nov 11, 23:24 UT Visible from Summary ------- On 2024 Nov 11 UT, the 12.249 km diameter asteroid (12894) 1998 QN73 will occult a 11.4 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 6.77 mag to 18.18 mag (the magnitude of the asteroid) for at most 0.340 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: 94 * date and approx. time of event: 2024 Nov 11, 23:21 - 2024 Nov 11, 23:27 * geocentric midpoint of event [JD]: 2460626.47532154 * magnitude of target star: 11.41 * magnitude drop [mag]: 6.77 * estimated maximum duration [s]: 0.340 * Moon: 79 % sunlit, 67° distance * Sun: 59° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.002", 71°) * approx speed of asteroid's shadow [km/s]: 36.0447 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 370-168241 by 12894 1998 QN73 on 2024 Nov 11 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 145 0 0 -38 25 49 23 21 55.2 1 110 49 -38 29 56 -38 21 43 -38 33 43 -38 17 56 .... 146 0 0 -38 43 16 23 21 55.3 1 109 50 -38 47 23 -38 39 10 -38 51 10 -38 35 23 0.51 147 0 0 -39 0 32 23 21 55.4 2 109 50 -39 4 38 -38 56 26 -39 8 25 -38 52 39 0.54 148 0 0 -39 17 35 23 21 55.5 3 108 51 -39 21 41 -39 13 30 -39 25 28 -39 9 43 0.55 149 0 0 -39 34 27 23 21 55.7 4 107 52 -39 38 32 -39 30 22 -39 42 19 -39 26 35 0.56 150 0 0 -39 51 6 23 21 55.9 5 107 52 -39 55 11 -39 47 1 -39 58 58 -39 43 15 0.57 151 0 0 -40 7 32 23 21 56.2 6 106 53 -40 11 37 -40 3 27 -40 15 24 -39 59 41 0.57 152 0 0 -40 23 46 23 21 56.5 6 106 53 -40 27 50 -40 19 41 -40 31 37 -40 15 55 0.57 153 0 0 -40 39 46 23 21 56.9 7 105 54 -40 43 50 -40 35 42 -40 47 36 -40 31 56 0.57 154 0 0 -40 55 33 23 21 57.2 8 104 54 -40 59 37 -40 51 29 -41 3 23 -40 47 44 0.57 155 0 0 -41 11 7 23 21 57.7 9 104 55 -41 15 10 -41 7 3 -41 18 56 -41 3 18 0.58 156 0 0 -41 26 27 23 21 58.1 10 103 55 -41 30 30 -41 22 23 -41 34 15 -41 18 38 0.58 157 0 0 -41 41 33 23 21 58.6 10 102 56 -41 45 36 -41 37 30 -41 49 21 -41 33 45 0.58 158 0 0 -41 56 25 23 21 59.1 11 102 56 -42 0 28 -41 52 22 -42 4 13 -41 48 38 0.58 159 0 0 -42 11 3 23 21 59.7 12 101 57 -42 15 6 -42 7 0 -42 18 50 -42 3 17 0.58 160 0 0 -42 25 27 23 22 0.3 13 100 57 -42 29 29 -42 21 25 -42 33 13 -42 17 41 0.58 161 0 0 -42 39 36 23 22 0.9 13 99 58 -42 43 38 -42 35 34 -42 47 22 -42 31 51 0.58 162 0 0 -42 53 31 23 22 1.6 14 99 58 -42 57 33 -42 49 29 -43 1 16 -42 45 46 0.58 163 0 0 -43 7 11 23 22 2.3 15 98 58 -43 11 12 -43 3 10 -43 14 56 -42 59 27 0.58 164 0 0 -43 20 36 23 22 3.0 16 97 59 -43 24 38 -43 16 36 -43 28 20 -43 12 53 0.58 165 0 0 -43 33 47 23 22 3.8 16 97 59 -43 37 48 -43 29 46 -43 41 30 -43 26 4 0.58 166 0 0 -43 46 43 23 22 4.6 17 96 59 -43 50 43 -43 42 42 -43 54 25 -43 39 1 0.58 167 0 0 -43 59 23 23 22 5.4 18 95 59 -44 3 23 -43 55 23 -44 7 5 -43 51 42 0.58 168 0 0 -44 11 49 23 22 6.3 19 94 60 -44 15 48 -44 7 49 -44 19 30 -44 4 8 0.58 169 0 0 -44 23 59 23 22 7.1 19 94 60 -44 27 58 -44 19 59 -44 31 40 -44 16 18 0.58 170 0 0 -44 35 54 23 22 8.0 20 93 60 -44 39 53 -44 31 55 -44 43 34 -44 28 14 0.58 171 0 0 -44 47 33 23 22 9.0 21 92 60 -44 51 32 -44 43 35 -44 55 13 -44 39 54 0.58 172 0 0 -44 58 58 23 22 9.9 22 91 61 -45 2 56 -44 54 59 -45 6 37 -44 51 19 0.58 173 0 0 -45 10 7 23 22 10.9 22 91 61 -45 14 5 -45 6 9 -45 17 45 -45 2 29 0.58 174 0 0 -45 21 0 23 22 11.9 23 90 61 -45 24 58 -45 17 2 -45 28 38 -45 13 23 0.58 175 0 0 -45 31 38 23 22 13.0 24 89 61 -45 35 35 -45 27 40 -45 39 15 -45 24 1 0.58 176 0 0 -45 42 0 23 22 14.0 24 88 61 -45 45 57 -45 38 3 -45 49 37 -45 34 24 0.58 177 0 0 -45 52 7 23 22 15.1 25 87 61 -45 56 4 -45 48 10 -45 59 43 -45 44 32 0.58 178 0 0 -46 1 58 23 22 16.2 26 87 61 -46 5 55 -45 58 2 -46 9 34 -45 54 23 0.58 179 0 0 -46 11 34 23 22 17.4 27 86 61 -46 15 30 -46 7 37 -46 19 9 -46 3 59 0.58 -180 0 0 -46 20 54 23 22 18.5 27 85 61 -46 24 50 -46 16 58 -46 28 28 -46 13 20 0.58 -179 0 0 -46 29 58 23 22 19.7 28 84 61 -46 33 54 -46 26 2 -46 37 32 -46 22 25 0.58 -178 0 0 -46 38 46 23 22 20.9 29 83 61 -46 42 42 -46 34 51 -46 46 20 -46 31 14 0.58 -177 0 0 -46 47 19 23 22 22.1 29 82 61 -46 51 14 -46 43 24 -46 54 52 -46 39 47 0.58 -176 0 0 -46 55 37 23 22 23.4 30 81 61 -46 59 31 -46 51 42 -47 3 9 -46 48 5 0.58 -175 0 0 -47 3 38 23 22 24.6 31 81 61 -47 7 33 -46 59 44 -47 11 10 -46 56 7 0.58 -174 0 0 -47 11 24 23 22 25.9 31 80 61 -47 15 18 -47 7 30 -47 18 55 -47 3 53 0.58 -173 0 0 -47 18 54 23 22 27.2 32 79 60 -47 22 48 -47 15 0 -47 26 25 -47 11 24 0.58 -172 0 0 -47 26 9 23 22 28.5 32 78 60 -47 30 2 -47 22 15 -47 33 39 -47 18 39 0.58 -171 0 0 -47 33 7 23 22 29.9 33 77 60 -47 37 1 -47 29 14 -47 40 37 -47 25 38 0.58 -170 0 0 -47 39 50 23 22 31.2 34 76 60 -47 43 44 -47 35 57 -47 47 20 -47 32 22 0.58 -169 0 0 -47 46 18 23 22 32.6 34 75 60 -47 50 11 -47 42 25 -47 53 47 -47 38 50 0.58 -168 0 0 -47 52 30 23 22 34.0 35 74 59 -47 56 23 -47 48 37 -47 59 58 -47 45 2 0.58 -167 0 0 -47 58 26 23 22 35.4 36 73 59 -48 2 19 -47 54 33 -48 5 54 -47 50 59 0.58 -166 0 0 -48 4 6 23 22 36.8 36 72 59 -48 7 59 -48 0 14 -48 11 34 -47 56 39 0.58 -165 0 0 -48 9 31 23 22 38.3 37 71 59 -48 13 24 -48 5 39 -48 16 58 -48 2 5 0.58 -164 0 0 -48 14 40 23 22 39.8 37 70 58 -48 18 33 -48 10 49 -48 22 7 -48 7 14 0.58 -163 0 0 -48 19 34 23 22 41.2 38 69 58 -48 23 26 -48 15 42 -48 27 1 -48 12 8 0.58 -162 0 0 -48 24 12 23 22 42.7 39 68 58 -48 28 4 -48 20 21 -48 31 38 -48 16 47 0.58 -161 0 0 -48 28 35 23 22 44.3 39 67 57 -48 32 26 -48 24 43 -48 36 0 -48 21 10 0.58 -160 0 0 -48 32 42 23 22 45.8 40 66 57 -48 36 33 -48 28 50 -48 40 7 -48 25 17 0.58 -159 0 0 -48 36 33 23 22 47.3 40 65 57 -48 40 24 -48 32 42 -48 43 58 -48 29 9 0.58 -158 0 0 -48 40 9 23 22 48.9 41 64 56 -48 44 0 -48 36 18 -48 47 34 -48 32 45 0.58 -157 0 0 -48 43 29 23 22 50.5 42 63 56 -48 47 20 -48 39 38 -48 50 54 -48 36 5 0.58 -156 0 0 -48 46 34 23 22 52.1 42 62 55 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0 -48 39 39 23 23 36.6 54 30 43 -48 43 30 -48 35 48 -48 47 4 -48 32 15 0.59 -130 0 0 -48 36 1 23 23 38.5 55 29 42 -48 39 52 -48 32 10 -48 43 26 -48 28 36 0.59 -129 0 0 -48 32 7 23 23 40.5 55 27 42 -48 35 58 -48 28 15 -48 39 32 -48 24 42 0.59 -128 0 0 -48 27 57 23 23 42.5 55 26 41 -48 31 48 -48 24 5 -48 35 22 -48 20 32 0.59 -127 0 0 -48 23 31 23 23 44.5 56 24 41 -48 27 23 -48 19 40 -48 30 57 -48 16 6 0.59 -126 0 0 -48 18 50 23 23 46.5 56 22 40 -48 22 42 -48 14 59 -48 26 17 -48 11 25 0.59 -125 0 0 -48 13 54 23 23 48.5 56 21 39 -48 17 46 -48 10 2 -48 21 20 -48 6 28 0.59 -124 0 0 -48 8 41 23 23 50.5 57 19 39 -48 12 33 -48 4 49 -48 16 8 -48 1 15 0.59 -123 0 0 -48 3 13 23 23 52.6 57 17 38 -48 7 5 -47 59 21 -48 10 40 -47 55 46 0.59 -122 0 0 -47 57 29 23 23 54.6 57 16 38 -48 1 22 -47 53 37 -48 4 57 -47 50 2 0.59 -121 0 0 -47 51 29 23 23 56.7 58 14 37 -47 55 22 -47 47 37 -47 58 58 -47 44 2 0.59 -120 0 0 -47 45 14 23 23 58.8 58 12 36 -47 49 7 -47 41 21 -47 52 43 -47 37 46 0.59 -119 0 0 -47 38 43 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34 -37 31 37 -37 15 46 0.59 - 70 0 0 -37 5 14 23 25 52.0 46 286 -1 -37 9 22 -37 1 7 -37 13 10 -36 57 19 0.59 - 69 0 0 -36 46 37 23 25 54.2 45 285 -2 -36 50 45 -36 42 30 -36 54 33 -36 38 41 0.59 - 68 0 0 -36 27 50 23 25 56.4 45 284 -3 -36 31 57 -36 23 42 -36 35 47 -36 19 54 0.59 - 67 0 0 -36 8 53 23 25 58.6 44 283 -4 -36 13 1 -36 4 45 -36 16 50 -36 0 56 0.59 - 66 0 0 -35 49 46 23 26 0.8 43 282 -5 -35 53 54 -35 45 38 -35 57 44 -35 41 50 0.59 - 65 0 0 -35 30 31 23 26 2.9 42 281 -5 -35 34 39 -35 26 23 -35 38 29 -35 22 34 0.59 - 64 0 0 -35 11 7 23 26 5.0 42 280 -6 -35 15 15 -35 6 59 -35 19 5 -35 3 10 0.59 - 63 0 0 -34 51 35 23 26 7.1 41 279 -7 -34 55 43 -34 47 27 -34 59 33 -34 43 37 0.59 - 62 0 0 -34 31 55 23 26 9.2 40 278 -8 -34 36 3 -34 27 46 -34 39 53 -34 23 57 0.60 - 61 0 0 -34 12 7 23 26 11.3 39 277 -9 -34 16 16 -34 7 59 -34 20 6 -34 4 10 0.60 - 60 0 0 -33 52 13 23 26 13.3 39 276 -10 -33 56 22 -33 48 5 -34 0 12 -33 44 15 0.60 - 59 0 0 -33 32 12 23 26 15.3 38 275 -11 -33 36 21 -33 28 4 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-25 23 52 -25 15 39 -25 27 40 -25 11 51 0.61 - 34 0 0 -24 59 39 23 26 53.1 15 259 -33 -25 3 45 -24 55 33 -25 7 33 -24 51 45 0.61 - 33 0 0 -24 39 38 23 26 54.0 14 259 -34 -24 43 45 -24 35 32 -24 47 32 -24 31 45 0.62 - 32 0 0 -24 19 45 23 26 54.8 14 258 -35 -24 23 51 -24 15 39 -24 27 38 -24 11 52 0.62 - 31 0 0 -23 59 59 23 26 55.6 13 258 -36 -24 4 5 -23 55 54 -24 7 52 -23 52 7 0.62 - 30 0 0 -23 40 21 23 26 56.4 12 257 -37 -23 44 26 -23 36 16 -23 48 13 -23 32 29 0.62 - 29 0 0 -23 20 51 23 26 57.0 11 257 -38 -23 24 57 -23 16 46 -23 28 43 -23 13 0 0.63 - 28 0 0 -23 1 31 23 26 57.6 10 257 -39 -23 5 35 -22 57 26 -23 9 22 -22 53 40 0.63 - 27 0 0 -22 42 19 23 26 58.2 9 256 -39 -22 46 24 -22 38 15 -22 50 10 -22 34 29 0.64 - 26 0 0 -22 23 17 23 26 58.7 8 256 -40 -22 27 22 -22 19 13 -22 31 7 -22 15 28 0.64 - 25 0 0 -22 4 26 23 26 59.2 7 255 -41 -22 8 30 -22 0 22 -22 12 15 -21 56 37 0.65 - 24 0 0 -21 45 45 23 26 59.5 6 255 -42 -21 49 49 -21 41 41 -21 53 34 -21 37 56 0.66 - 23 0 0 -21 27 15 23 26 59.9 5 255 -43 -21 31 18 -21 23 12 -21 35 4 -21 19 27 0.68 - 22 0 0 -21 8 57 23 27 0.1 4 254 -43 -21 13 0 -21 4 54 -21 16 45 -21 1 9 0.70 - 21 0 0 -20 50 51 23 27 0.3 3 254 -44 -20 54 54 -20 46 48 -20 58 38 -20 43 4 0.74 - 20 0 0 -20 32 57 23 27 0.5 2 254 -45 -20 36 59 -20 28 54 -20 40 44 -20 25 11 0.82 - 19 0 0 -20 15 16 23 27 0.6 1 253 -46 -20 19 18 -20 11 14 -20 23 2 -20 7 30 1.08 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 370-168241 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 15 38.5100 DE: -16 01 05.670 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 15 38.5099 DE: -16 01 05.671 * 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: (12894) 1998 QN73 asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.47860 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#44 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): 0.014", 0.002", 71.062° remarks: * orbital elements for (12894)1998 QN73 : Mean anomaly = 355.6420920328 deg Arg. of pericenter = 49.5673658718 deg Long. of node = 269.3803959834 deg Inclination = 10.6577469031 deg Eccentricity = 0.2051217382 Semimajor axis = 2.6883583279 AU Perihelion dist = 2.1369175947 AU Mag: H = 13.46, G = 0.15 Epoch of elements : MJD 60625.97532154 TDT (2024 Nov 11.9753) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#442023Apr25,0.34,2024,11,11,23.407717,0.083425,-0.496876,20.062584,3.375794,0.004608,0.000932,-0.000001,0.000000 -113.4452,-15.9753,-175.08,-17.76,False UCAC4 370-168241,19.26069727,-16.0182416,11.72,11.41,11.24,0.0,0,,19.28418513,-15.9753423,6.78,6.49,0,0,0 12894,1998 QN73,18.18,12.249,2.4786,0,0,4.936,11.98,,0.6,0 0,355.4240,2024,11,11,49.5674,269.3804,10.6577,0.20512,2.68836,2.13692,13.46,5.0,0.15 1.462,0.0140,0.0022,71,0.0032,Known errors,1.12,0,-1,-1 20241111_168241,60140.69 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:38 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org