IOTA/IOTA-ES occultation update for (412) Elisabetha / TYC 0057-00232-1 event on 2023 Nov 07, 05:01 UT Visible from South America Summary ------- On 2023 Nov 07 UT, the 98.5 km diameter asteroid (412) Elisabetha will occult a 10.7 mag star in the constellation Taurus 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 2.81 mag to 13.39 mag (the magnitude of the asteroid) for at most 7.620 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: 2023 Nov 07, 04:54 - 2023 Nov 07, 05:10 * geocentric midpoint of event [JD]: 2460255.70985167 * magnitude of target star: 10.67 * magnitude drop [mag]: 2.81 * estimated maximum duration [s]: 7.620 * Moon: 32 % sunlit, 106° distance * Sun: 161° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 102 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 68°) * approx speed of asteroid's shadow [km/s]: 12.9329 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0057-00232-1 by 412 Elisabetha on 2023 Nov 7 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 -161 0 0 -22 59 26 5 10 7.6 0 89 -3 -22 31 51 -23 27 5 -22 29 13 -23 29 43 .... -160 0 0 -22 58 54 5 10 7.5 1 89 -4 -22 31 18 -23 26 33 -22 28 41 -23 29 11 0.17 -159 0 0 -22 58 12 5 10 7.2 2 89 -5 -22 30 37 -23 25 52 -22 27 59 -23 28 30 0.21 -158 0 0 -22 57 23 5 10 6.8 3 88 -6 -22 29 47 -23 25 2 -22 27 10 -23 27 40 0.22 -157 0 0 -22 56 25 5 10 6.3 4 88 -7 -22 28 49 -23 24 5 -22 26 12 -23 26 43 0.23 -156 0 0 -22 55 19 5 10 5.6 5 87 -7 -22 27 43 -23 22 59 -22 25 6 -23 25 37 0.24 -155 0 0 -22 54 5 5 10 4.9 6 87 -8 -22 26 29 -23 21 45 -22 23 51 -23 24 23 0.24 -154 0 0 -22 52 43 5 10 4.0 7 87 -9 -22 25 6 -23 20 22 -22 22 29 -23 23 0 0.25 -153 0 0 -22 51 12 5 10 2.9 8 86 -10 -22 23 35 -23 18 52 -22 20 58 -23 21 30 0.25 -152 0 0 -22 49 33 5 10 1.7 9 86 -11 -22 21 56 -23 17 13 -22 19 19 -23 19 51 0.25 -151 0 0 -22 47 46 5 10 0.4 10 86 -12 -22 20 9 -23 15 26 -22 17 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6 20 51 - 7 16 8 - 6 18 13 - 7 18 46 0.36 22 0 0 - 6 48 45 4 54 14.3 0 270 11 - 6 21 8 - 7 16 26 - 6 18 30 - 7 19 4 0.67 Uncertainty in time = +/- 1 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 0057-00232-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 27 01.4961 DE: +00 18 20.878 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 27 01.4962 DE: +00 18 20.876 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.200) * V mag [mag]: 10.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (412) Elisabetha asteroid class: approx. diameter [km]: 99 approx. diameter ["]: 0.071 distance from Earth [AU]: 1.90950 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#67 date of fit: 2023 Oct 09 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", 0.001", 67.92° remarks: * orbital elements for (412)Elisabetha : Mean anomaly = 208.2618871628 deg Arg. of pericenter = 94.4141354692 deg Long. of node = 106.2778799971 deg Inclination = 13.7644317554 deg Eccentricity = 0.0407078718 Semimajor axis = 2.7661451916 AU Perihelion dist = 2.6535413077 AU Mag: H = 9.20, G = 0.15 Epoch of elements : MJD 60255.20965278 TDT (2023 Nov 07.2097) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#672023Oct09,7.62,2023,11,7,5.036440,0.035533,-0.253143,-7.227926,-1.020958,-0.001009,0.001595,0.000001,0.000000 -69.6276,0.3906,100.37,-16.19,False TYC 0057-00232-1,3.45041558,0.3057996,0.00,10.67,0.00,0.0,0,,3.47105753,0.3906044,2.80,0.00,0,0,0 412,Elisabetha,13.39,98.500,1.9095,0,0,-2.219,-4.70,,5.4,0 0,208.2170,2023,11,7,94.4141,106.2779,13.7644,0.04071,2.76615,2.65354,9.21,5.0,0.15 1.048,0.0137,0.0007,68,0.0137,Known errors,-1.00,0,-1,-1 20231107_0232-1,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org