IOTA/IOTA-ES occultation update for (838) Seraphina / TYC 5756-01898-1 event on 2024 Nov 22, 11:14 UT Visible from Summary ------- On 2024 Nov 22 UT, the 54.895 km diameter asteroid (838) Seraphina will occult a 11.1 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.29 mag to 15.38 mag (the magnitude of the asteroid) for at most 1.940 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: 99 * date and approx. time of event: 2024 Nov 22, 11:11 - 2024 Nov 22, 11:18 * geocentric midpoint of event [JD]: 2460636.96863862 * magnitude of target star: 11.11 * magnitude drop [mag]: 4.29 * estimated maximum duration [s]: 1.940 * Moon: 57 % sunlit, 163° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 63 * 1 sigma uncertainty interval [path widths]: +/- 0.12 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.002", 70°) * approx speed of asteroid's shadow [km/s]: 28.2962 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5756-01898-1 by 838 Seraphina on 2024 Nov 22 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 - 14 0 0 -36 18 56 11 11 33.1 0 100 64 -36 36 11 .. .. .. -36 40 22 .. .. .. .... - 13 0 0 -36 27 6 11 11 33.2 1 99 65 -36 44 21 -36 9 54 -36 48 32 -36 5 45 0.36 - 12 0 0 -36 35 8 11 11 33.2 2 98 66 -36 52 22 -36 17 57 -36 56 33 -36 13 47 0.46 - 11 0 0 -36 43 2 11 11 33.4 2 98 66 -37 0 15 -36 25 51 -37 4 26 -36 21 41 0.49 - 10 0 0 -36 50 47 11 11 33.6 3 97 67 -37 8 0 -36 33 36 -37 12 11 -36 29 27 0.50 - 9 0 0 -36 58 23 11 11 33.8 4 97 67 -37 15 36 -36 41 14 -37 19 47 -36 37 4 0.51 - 8 0 0 -37 5 51 11 11 34.1 5 96 68 -37 23 4 -36 48 42 -37 27 14 -36 44 33 0.52 - 7 0 0 -37 13 11 11 11 34.4 6 95 68 -37 30 22 -36 56 2 -37 34 33 -36 51 53 0.52 - 6 0 0 -37 20 21 11 11 34.8 7 95 69 -37 37 33 -37 3 13 -37 41 43 -36 59 4 0.53 - 5 0 0 -37 27 23 11 11 35.2 7 94 69 -37 44 34 -37 10 15 -37 48 44 -37 6 6 0.53 - 4 0 0 -37 34 16 11 11 35.7 8 94 69 -37 51 26 -37 17 8 -37 55 36 -37 12 59 0.53 - 3 0 0 -37 40 59 11 11 36.3 9 93 70 -37 58 9 -37 23 52 -38 2 19 -37 19 44 0.53 - 2 0 0 -37 47 34 11 11 36.8 10 92 70 -38 4 43 -37 30 27 -38 8 53 -37 26 19 0.53 - 1 0 0 -37 53 59 11 11 37.5 11 92 70 -38 11 8 -37 36 53 -38 15 18 -37 32 45 0.54 0 0 0 -38 0 15 11 11 38.2 11 91 71 -38 17 23 -37 43 9 -38 21 33 -37 39 1 0.54 1 0 0 -38 6 22 11 11 38.9 12 90 71 -38 23 30 -37 49 16 -38 27 39 -37 45 8 0.54 2 0 0 -38 12 19 11 11 39.7 13 90 71 -38 29 26 -37 55 14 -38 33 36 -37 51 6 0.54 3 0 0 -38 18 6 11 11 40.5 14 89 71 -38 35 13 -38 1 2 -38 39 23 -37 56 54 0.54 4 0 0 -38 23 44 11 11 41.4 14 89 71 -38 40 51 -38 6 40 -38 45 0 -38 2 32 0.54 5 0 0 -38 29 13 11 11 42.3 15 88 71 -38 46 19 -38 12 9 -38 50 28 -38 8 1 0.54 6 0 0 -38 34 31 11 11 43.2 16 87 72 -38 51 37 -38 17 28 -38 55 46 -38 13 20 0.54 7 0 0 -38 39 40 11 11 44.2 17 87 72 -38 56 46 -38 22 37 -39 0 55 -38 18 30 0.54 8 0 0 -38 44 39 11 11 45.3 18 86 71 -39 1 44 -38 27 37 -39 5 53 -38 23 29 0.54 9 0 0 -38 49 28 11 11 46.4 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41 -38 30 2 -37 47 33 0.55 72 0 0 -38 2 39 11 14 7.6 59 18 32 -38 19 46 -37 45 34 -38 23 56 -37 41 26 0.55 73 0 0 -37 56 23 11 14 10.7 59 16 32 -38 13 31 -37 39 18 -38 17 40 -37 35 9 0.55 74 0 0 -37 49 57 11 14 13.8 59 14 31 -38 7 6 -37 32 51 -38 11 15 -37 28 43 0.55 75 0 0 -37 43 22 11 14 16.9 60 12 30 -38 0 31 -37 26 16 -38 4 41 -37 22 7 0.55 76 0 0 -37 36 37 11 14 20.1 60 10 29 -37 53 46 -37 19 31 -37 57 56 -37 15 22 0.55 77 0 0 -37 29 43 11 14 23.2 60 8 28 -37 46 53 -37 12 36 -37 51 3 -37 8 27 0.55 78 0 0 -37 22 40 11 14 26.4 60 6 28 -37 39 50 -37 5 32 -37 44 0 -37 1 23 0.55 79 0 0 -37 15 27 11 14 29.6 61 4 27 -37 32 38 -36 58 19 -37 36 48 -36 54 10 0.55 80 0 0 -37 8 5 11 14 32.8 61 2 26 -37 25 16 -36 50 57 -37 29 27 -36 46 48 0.55 81 0 0 -37 0 34 11 14 36.0 61 360 25 -37 17 46 -36 43 25 -37 21 57 -36 39 16 0.55 82 0 0 -36 52 54 11 14 39.2 61 358 24 -37 10 7 -36 35 45 -37 14 17 -36 31 36 0.55 83 0 0 -36 45 6 11 14 42.5 61 356 24 -37 2 18 -36 27 56 -37 6 29 -36 23 47 0.55 84 0 0 -36 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121 0 0 -30 20 51 11 16 43.6 46 292 -9 -30 38 17 -30 3 28 -30 42 31 -29 59 15 0.56 122 0 0 -30 9 11 11 16 46.5 45 291 -10 -30 26 37 -29 51 48 -30 30 52 -29 47 35 0.56 123 0 0 -29 57 29 11 16 49.3 44 290 -10 -30 14 55 -29 40 6 -30 19 10 -29 35 53 0.56 124 0 0 -29 45 45 11 16 52.1 44 289 -11 -30 3 12 -29 28 22 -30 7 26 -29 24 9 0.56 125 0 0 -29 34 0 11 16 54.9 43 288 -12 -29 51 26 -29 16 36 -29 55 40 -29 12 24 0.56 126 0 0 -29 22 13 11 16 57.7 42 287 -13 -29 39 40 -29 4 49 -29 43 54 -29 0 37 0.56 127 0 0 -29 10 25 11 17 0.4 41 286 -14 -29 27 52 -28 53 2 -29 32 6 -28 48 49 0.56 128 0 0 -28 58 37 11 17 3.0 40 285 -15 -29 16 3 -28 41 13 -29 20 17 -28 37 0 0.56 129 0 0 -28 46 47 11 17 5.6 40 285 -15 -29 4 14 -28 29 24 -29 8 28 -28 25 11 0.56 130 0 0 -28 34 58 11 17 8.2 39 284 -16 -28 52 24 -28 17 34 -28 56 38 -28 13 22 0.56 131 0 0 -28 23 8 11 17 10.8 38 283 -17 -28 40 35 -28 5 45 -28 44 49 -28 1 32 0.56 132 0 0 -28 11 19 11 17 13.3 37 282 -18 -28 28 45 -27 53 55 -28 32 59 -27 49 43 0.56 133 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-23 28 35 11 17 59.1 15 268 -37 -23 45 55 -23 11 18 -23 50 7 -23 7 7 0.57 158 0 0 -23 18 16 11 18 0.1 14 267 -38 -23 35 35 -23 0 59 -23 39 48 -22 56 49 0.58 159 0 0 -23 8 3 11 18 1.1 13 267 -39 -23 25 22 -22 50 47 -23 29 35 -22 46 37 0.58 160 0 0 -22 57 58 11 18 2.1 12 267 -39 -23 15 16 -22 40 42 -23 19 29 -22 36 31 0.58 161 0 0 -22 47 59 11 18 2.9 11 266 -40 -23 5 17 -22 30 44 -23 9 29 -22 26 33 0.58 162 0 0 -22 38 8 11 18 3.7 10 266 -41 -22 55 26 -22 20 53 -22 59 38 -22 16 43 0.58 163 0 0 -22 28 24 11 18 4.4 9 265 -41 -22 45 41 -22 11 10 -22 49 53 -22 6 59 0.59 164 0 0 -22 18 48 11 18 5.1 8 265 -42 -22 36 5 -22 1 34 -22 40 17 -21 57 24 0.59 165 0 0 -22 9 20 11 18 5.7 8 265 -43 -22 26 36 -21 52 6 -22 30 48 -21 47 56 0.60 166 0 0 -21 59 59 11 18 6.2 7 264 -43 -22 17 15 -21 42 46 -22 21 27 -21 38 36 0.60 167 0 0 -21 50 48 11 18 6.7 6 264 -44 -22 8 3 -21 33 35 -22 12 15 -21 29 25 0.61 168 0 0 -21 41 44 11 18 7.0 5 264 -44 -21 58 59 -21 24 32 -22 3 11 -21 20 22 0.62 169 0 0 -21 32 50 11 18 7.4 4 263 -45 -21 50 4 -21 15 38 -21 54 15 -21 11 28 0.64 170 0 0 -21 24 4 11 18 7.6 3 263 -45 -21 41 18 -21 6 52 -21 45 29 -21 2 43 0.67 171 0 0 -21 15 27 11 18 7.8 2 262 -46 -21 32 40 -20 58 16 -21 36 51 -20 54 6 0.73 172 0 0 -21 6 59 11 18 7.9 1 262 -46 -21 24 12 -20 49 48 -21 28 23 -20 45 39 0.90 173 0 0 -20 58 40 11 18 7.9 0 262 -47 -21 15 53 .. .. .. -21 20 4 .. .. .. 199.77 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5756-01898-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 44 40.8509 DE: -07 50 24.269 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 44 40.8509 DE: -07 50 24.269 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.1 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (838) Seraphina asteroid class: approx. diameter [km]: 55 approx. diameter ["]: 0.028 distance from Earth [AU]: 2.68190 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#96 date of fit: 2023 Apr 24 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", 0.002", 69.963° remarks: * orbital elements for (838)Seraphina : Mean anomaly = 341.2397536893 deg Arg. of pericenter = 117.7437119428 deg Long. of node = 240.0165958716 deg Inclination = 10.4228798581 deg Eccentricity = 0.1308144554 Semimajor axis = 2.8986391644 AU Perihelion dist = 2.5194552607 AU Mag: H = 10.16, G = 0.15 Epoch of elements : MJD 60636.46863829 TDT (2024 Nov 22.4686) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#962023Apr24,1.94,2024,11,22,11.247327,0.064397,-0.476789,15.826405,2.145645,0.005226,0.001778,0.000000,0.000000 80.8560,-7.7501,7.85,-20.29,False TYC 5756-01898-1,20.74468085,-7.8400746,11.69,11.11,10.80,0.0,0,,20.76673157,-7.7501426,4.29,4.16,0,0,0 838,Seraphina,15.38,54.895,2.6819,0,0,3.492,7.04,,2.8,0 0,341.1462,2024,11,22,117.7437,240.0166,10.4229,0.13081,2.89864,2.51946,10.16,5.0,0.15 1.121,0.0130,0.0021,70,0.0034,Known errors,1.28,0,-1,-1 20241122_1898-1,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org