IOTA/IOTA-ES occultation update for (4014) Heizman / TYC 1830-00652-1 event on 2024 Dec 18, 07:22 UT Visible from Summary ------- On 2024 Dec 18 UT, the 36.874 km diameter asteroid (4014) Heizman will occult a 10.9 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.53 mag to 17.43 mag (the magnitude of the asteroid) for at most 2.880 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: 2024 Dec 18, 07:15 - 2024 Dec 18, 07:30 * geocentric midpoint of event [JD]: 2460662.80757383 * magnitude of target star: 10.90 * magnitude drop [mag]: 6.53 * estimated maximum duration [s]: 2.880 * Moon: 90 % sunlit, 52° distance * Sun: 165° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 43 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 4.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.033, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.034", 0.001", 83°) * approx speed of asteroid's shadow [km/s]: 12.7834 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1830-00652-1 by 4014 Heizman on 2024 Dec 18 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 159 0 0 -36 48 45 7 30 0.8 1 61 12 -36 35 22 -37 2 11 -36 32 58 -37 4 36 .... 160 0 0 -36 22 11 7 30 0.6 2 60 11 -36 8 47 -36 35 37 -36 6 23 -36 38 1 0.31 161 0 0 -35 55 26 7 30 0.3 2 60 10 -35 42 1 -36 8 52 -35 39 38 -36 11 17 0.43 162 0 0 -35 28 31 7 29 59.8 3 59 9 -35 15 7 -35 41 57 -35 12 43 -35 44 22 0.48 163 0 0 -35 1 27 7 29 59.2 4 59 8 -34 48 3 -35 14 53 -34 45 39 -35 17 18 0.51 164 0 0 -34 34 15 7 29 58.4 5 58 7 -34 20 51 -34 47 41 -34 18 27 -34 50 6 0.53 165 0 0 -34 6 55 7 29 57.5 6 57 6 -33 53 31 -34 20 22 -33 51 8 -34 22 46 0.54 166 0 0 -33 39 29 7 29 56.4 7 57 5 -33 26 5 -33 52 55 -33 23 42 -33 55 20 0.55 167 0 0 -33 11 57 7 29 55.1 8 56 5 -32 58 33 -33 25 22 -32 56 9 -33 27 47 0.56 168 0 0 -32 44 19 7 29 53.7 9 56 4 -32 30 56 -32 57 44 -32 28 32 -33 0 9 0.57 169 0 0 -32 16 37 7 29 52.1 10 55 3 -32 3 14 -32 30 2 -32 0 50 -32 32 26 0.57 170 0 0 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17 .. .. .. .... Uncertainty in time = +/- 5 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 1830-00652-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 38 34.3454 DE: +22 31 01.976 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 38 34.3453 DE: +22 31 01.976 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.9 * B mag [mag]: 11.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4014) Heizman asteroid class: approx. diameter [km]: 37 approx. diameter ["]: 0.021 distance from Earth [AU]: 2.40700 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2023 Feb 10 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): 0.034", 0.001", 82.88° remarks: * orbital elements for (4014)Heizman : Mean anomaly = 56.2219228976 deg Arg. of pericenter = 105.5546525958 deg Long. of node = 270.2218999862 deg Inclination = 1.1124679868 deg Eccentricity = 0.0375516568 Semimajor axis = 3.4344801623 AU Perihelion dist = 3.3055097419 AU Mag: H = 12.50, G = 0.15 Epoch of elements : MJD 60662.30757287 TDT (2024 Dec 18.3076) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Feb10,2.88,2024,12,18,7.381772,0.084694,-0.510155,-7.118262,-1.179559,0.001562,0.000171,0.000001,0.000000 -128.1075,22.5681,68.46,-23.40,False TYC 1830-00652-1,4.64287372,22.5172156,11.34,10.90,10.66,0.0,0,,4.66817179,22.5680945,6.53,6.32,0,0,0 4014,Heizman,17.43,36.874,2.4070,0,0,-1.877,-4.31,,8.0,0 0,56.1743,2024,12,18,105.5547,270.2219,1.1125,0.03755,3.43448,3.30551,12.50,5.0,0.15 1.090,0.0337,0.0013,83,0.0019,Known errors,0.89,0,-1,-1 20241218_0652-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:52 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org