IOTA/IOTA-ES occultation update for (2498) Tsesevich / TYC 1864-00367-1 event on 2024 Mar 12, 23:55 UT Visible from Summary ------- On 2024 Mar 12 UT, the 11.370838851027 km diameter asteroid (2498) Tsesevich will occult a 9.9 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.71 mag to 17.60 mag (the magnitude of the asteroid) for at most 1.080 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: 91 * date and approx. time of event: 2024 Mar 12, 23:46 - 2024 Mar 13, 00:03 * geocentric midpoint of event [JD]: 2460382.49662287 * magnitude of target star: 9.89 * magnitude drop [mag]: 7.71 * estimated maximum duration [s]: 1.080 * Moon: 10 % sunlit, 63° distance * Sun: 99° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.52 * 1 sigma uncertainty interval [seconds]: +/- 2.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.003", 94°) * approx speed of asteroid's shadow [km/s]: 10.7317 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1864-00367-1 by 2498 Tsesevich on 2024 Mar 12 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 178 0 0 33 35 2 23 46 47.1 1 61 53 33 30 43 33 39 20 33 26 18 33 43 46 .... 179 0 0 34 3 29 23 46 47.4 2 62 53 33 59 10 34 7 48 33 54 45 34 12 13 -0.59 -180 0 0 34 31 51 23 46 47.9 3 62 52 34 27 32 34 36 10 34 23 7 34 40 36 -0.61 -179 0 0 35 0 7 23 46 48.5 4 63 52 34 55 48 35 4 27 34 51 23 35 8 52 -0.63 -178 0 0 35 28 17 23 46 49.4 5 63 52 35 23 58 35 32 37 35 19 33 35 37 3 -0.63 -177 0 0 35 56 20 23 46 50.4 5 64 51 35 52 1 36 0 40 35 47 36 36 5 6 -0.64 -176 0 0 36 24 15 23 46 51.6 6 64 51 36 19 56 36 28 35 36 15 31 36 33 1 -0.64 -175 0 0 36 52 1 23 46 53.0 7 65 50 36 47 42 36 56 20 36 43 17 37 0 47 -0.64 -174 0 0 37 19 37 23 46 54.6 8 66 50 37 15 18 37 23 57 37 10 53 37 28 23 -0.64 -173 0 0 37 47 3 23 46 56.3 9 66 49 37 42 44 37 51 23 37 38 19 37 55 49 -0.64 -172 0 0 38 14 18 23 46 58.2 10 67 49 38 9 59 38 18 38 38 5 34 38 23 3 -0.65 -171 0 0 38 41 21 23 47 0.3 11 68 48 38 37 3 38 45 41 38 32 38 38 50 6 -0.65 -170 0 0 39 8 12 23 47 2.5 12 68 48 39 3 53 39 12 31 38 59 28 39 16 57 -0.65 -169 0 0 39 34 49 23 47 4.9 13 69 47 39 30 31 39 39 8 39 26 6 39 43 34 -0.65 -168 0 0 40 1 13 23 47 7.4 14 70 47 39 56 55 40 5 32 39 52 30 40 9 57 -0.65 -167 0 0 40 27 22 23 47 10.1 15 70 46 40 23 4 40 31 41 40 18 40 40 36 5 -0.65 -166 0 0 40 53 16 23 47 12.9 15 71 46 40 48 58 40 57 34 40 44 34 41 1 59 -0.65 -165 0 0 41 18 55 23 47 15.9 16 72 45 41 14 37 41 23 13 41 10 13 41 27 37 -0.65 -164 0 0 41 44 17 23 47 19.0 17 72 45 41 40 0 41 48 34 41 35 36 41 52 58 -0.65 -163 0 0 42 9 22 23 47 22.2 18 73 44 42 5 5 42 13 40 42 0 43 42 18 3 -0.65 -162 0 0 42 34 11 23 47 25.5 19 74 43 42 29 54 42 38 28 42 25 32 42 42 51 -0.65 -161 0 0 42 58 41 23 47 29.0 20 75 43 42 54 25 43 2 58 42 50 3 43 7 21 -0.65 -160 0 0 43 22 54 23 47 32.6 20 75 42 43 18 38 43 27 10 43 14 16 43 31 32 -0.65 -159 0 0 43 46 48 23 47 36.3 21 76 41 43 42 32 43 51 3 43 38 11 43 55 25 -0.65 -158 0 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29 35 0 3 0.4 + 16 289 -59 33 25 16 33 33 55 33 20 51 33 38 21 -0.69 7 0 0 33 0 41 0 3 3.7 + 15 289 -59 32 56 21 33 5 0 32 51 56 33 9 26 -0.69 8 0 0 32 31 42 0 3 6.8 + 14 290 -60 32 27 24 32 36 2 32 22 59 32 40 27 -0.69 9 0 0 32 2 42 0 3 9.7 + 14 290 -60 31 58 23 32 7 1 31 53 59 32 11 26 -0.69 10 0 0 31 33 40 0 3 12.5 + 13 291 -60 31 29 22 31 37 59 31 24 58 31 42 24 -0.70 11 0 0 31 4 38 0 3 15.0 + 12 292 -60 31 0 20 31 8 57 30 55 56 31 13 21 -0.70 12 0 0 30 35 37 0 3 17.4 + 11 292 -61 30 31 19 30 39 55 30 26 55 30 44 19 -0.70 13 0 0 30 6 36 0 3 19.6 + 10 293 -61 30 2 19 30 10 54 29 57 55 30 15 18 -0.71 14 0 0 29 37 38 0 3 21.5 + 9 293 -61 29 33 21 29 41 56 29 28 58 29 46 19 -0.72 15 0 0 29 8 44 0 3 23.3 + 8 294 -61 29 4 27 29 13 0 29 0 4 29 17 24 -0.72 16 0 0 28 39 53 0 3 24.8 + 7 294 -61 28 35 37 28 44 9 28 31 14 28 48 32 -0.74 17 0 0 28 11 7 0 3 26.1 + 6 295 -61 28 6 51 28 15 23 28 2 30 28 19 46 -0.75 18 0 0 27 42 27 0 3 27.3 + 5 295 -61 27 38 12 27 46 43 27 33 51 27 51 5 -0.77 19 0 0 27 13 54 0 3 28.2 + 4 296 -60 27 9 40 27 18 10 27 5 19 27 22 31 -0.80 20 0 0 26 45 29 0 3 28.8 + 3 296 -60 26 41 15 26 49 44 26 36 54 26 54 5 -0.86 21 0 0 26 17 12 0 3 29.3 + 2 296 -60 26 12 58 26 21 26 26 8 38 26 25 47 -0.99 22 0 0 25 49 4 0 3 29.6 + 1 297 -60 25 44 51 25 53 18 25 40 32 25 57 38 -1.60 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: TYC 1864-00367-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 07 02.0546 DE: +24 20 04.496 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 07 02.0546 DE: +24 20 04.496 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.9 * B mag [mag]: 10.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2498) Tsesevich asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.77360 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 date of fit: 2023 Apr 27 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): 0.015", 0.003", 94.2° remarks: * orbital elements for (2498)Tsesevich : Mean anomaly = 130.1946817864 deg Arg. of pericenter = 1.4001873820 deg Long. of node = 331.4721876344 deg Inclination = 1.2303954116 deg Eccentricity = 0.0864839623 Semimajor axis = 2.9153208945 AU Perihelion dist = 2.6631923923 AU Mag: H = 11.98, G = 0.15 Epoch of elements : MJD 60381.99662284 TDT (2024 Mar 12.9966) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr27,1.08,2024,3,12,23.918949,0.040259,0.534249,6.040051,-0.456123,0.005855,-0.000102,0.000000,0.000000 -77.7699,24.3327,-176.42,-2.82,False TYC 1864-00367-1,6.11723742,24.3345821,10.74,9.89,9.43,0.1,0,,6.14194370,24.3327009,7.71,7.72,0,0,0 2498,Tsesevich,17.60,11.572,2.7736,0,0,1.401,-1.45,,1.0,0 0,129.9973,2024,3,12,1.4002,331.4722,1.2304,0.08648,2.91532,2.66319,11.98,5.0,0.15 1.512,0.0150,0.0030,94,0.0030,Known errors,1.08,0,-1,-1 20240312_0367-1,60139.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org