IOTA/IOTA-ES occultation update for (1751) Herget / TYC 6176-00747-1 event on 2024 Jan 11, 00:29 UT Visible from Summary ------- On 2024 Jan 11 UT, the 11.124 km diameter asteroid (1751) Herget will occult a 11.2 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.98 mag to 18.14 mag (the magnitude of the asteroid) for at most 0.380 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: 97 * date and approx. time of event: 2024 Jan 11, 00:26 - 2024 Jan 11, 00:33 * geocentric midpoint of event [JD]: 2460320.52060341 * magnitude of target star: 11.16 * magnitude drop [mag]: 6.98 * estimated maximum duration [s]: 0.380 * Moon: 0 % sunlit, 55° distance * Sun: 62° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.38 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.001", 99°) * approx speed of asteroid's shadow [km/s]: 29.2516 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6176-00747-1 by 1751 Herget on 2024 Jan 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 19 0 0 0 50 59 0 26 8.7 0 111 -59 0 47 39 0 54 19 0 45 7 0 56 50 .... 20 0 0 0 28 2 0 26 8.8 1 111 -58 0 24 42 0 31 22 0 22 10 0 33 54 0.25 21 0 0 0 4 45 0 26 8.9 2 111 -57 0 1 24 0 8 5 - 0 1 8 0 10 38 0.26 22 0 0 - 0 18 53 0 26 9.1 3 111 -56 - 0 22 14 - 0 15 32 - 0 24 47 - 0 12 59 0.26 23 0 0 - 0 42 51 0 26 9.4 4 111 -55 - 0 46 12 - 0 39 29 - 0 48 45 - 0 36 57 0.26 24 0 0 - 1 7 8 0 26 9.7 5 111 -54 - 1 10 30 - 1 3 46 - 1 13 4 - 1 1 13 0.26 25 0 0 - 1 31 45 0 26 10.2 7 111 -53 - 1 35 7 - 1 28 23 - 1 37 41 - 1 25 49 0.26 26 0 0 - 1 56 40 0 26 10.7 8 111 -52 - 2 0 3 - 1 53 17 - 2 2 36 - 1 50 44 0.26 27 0 0 - 2 21 53 0 26 11.3 9 111 -51 - 2 25 16 - 2 18 30 - 2 27 50 - 2 15 56 0.26 28 0 0 - 2 47 24 0 26 12.0 10 110 -50 - 2 50 47 - 2 44 1 - 2 53 22 - 2 41 26 0.26 29 0 0 - 3 13 12 0 26 12.7 11 110 -49 - 3 16 35 - 3 9 48 - 3 19 10 - 3 7 13 0.26 30 0 0 - 3 39 16 0 26 13.6 12 110 -48 - 3 42 40 - 3 35 52 - 3 45 15 - 3 33 17 0.26 31 0 0 - 4 5 36 0 26 14.5 13 110 -46 - 4 9 1 - 4 2 12 - 4 11 36 - 3 59 37 0.26 32 0 0 - 4 32 12 0 26 15.5 14 110 -45 - 4 35 36 - 4 28 47 - 4 38 12 - 4 26 12 0.26 33 0 0 - 4 59 2 0 26 16.6 15 110 -44 - 5 2 27 - 4 55 37 - 5 5 3 - 4 53 1 0.26 34 0 0 - 5 26 6 0 26 17.8 16 110 -43 - 5 29 31 - 5 22 41 - 5 32 7 - 5 20 5 0.26 35 0 0 - 5 53 23 0 26 19.0 17 110 -42 - 5 56 49 - 5 49 58 - 5 59 25 - 5 47 22 0.26 36 0 0 - 6 20 54 0 26 20.4 19 110 -41 - 6 24 20 - 6 17 28 - 6 26 56 - 6 14 51 0.26 37 0 0 - 6 48 36 0 26 21.8 20 110 -40 - 6 52 2 - 6 45 9 - 6 54 39 - 6 42 33 0.26 38 0 0 - 7 16 29 0 26 23.3 21 109 -39 - 7 19 56 - 7 13 3 - 7 22 32 - 7 10 26 0.26 39 0 0 - 7 44 33 0 26 24.8 22 109 -38 - 7 48 0 - 7 41 6 - 7 50 37 - 7 38 29 0.26 40 0 0 - 8 12 47 0 26 26.5 23 109 -37 - 8 16 14 - 8 9 20 - 8 18 51 - 8 6 43 0.26 41 0 0 - 8 41 10 0 26 28.2 24 109 -36 - 8 44 37 - 8 37 42 - 8 47 14 - 8 35 5 0.26 42 0 0 - 9 9 41 0 26 30.0 25 109 -35 - 9 13 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255 71 -33 23 7 -33 16 33 -33 25 37 -33 14 4 0.27 -168 0 0 -33 2 29 0 33 3.5 15 255 70 -33 5 46 -32 59 11 -33 8 16 -32 56 41 0.27 -167 0 0 -32 44 45 0 33 4.4 14 254 70 -32 48 3 -32 41 27 -32 50 33 -32 38 57 0.28 -166 0 0 -32 26 39 0 33 5.2 13 254 69 -32 29 57 -32 23 21 -32 32 28 -32 20 50 0.28 -165 0 0 -32 8 11 0 33 6.0 12 253 68 -32 11 30 -32 4 52 -32 14 1 -32 2 22 0.28 -164 0 0 -31 49 21 0 33 6.8 11 253 68 -31 52 41 -31 46 2 -31 55 12 -31 43 31 0.28 -163 0 0 -31 30 10 0 33 7.4 10 252 67 -31 33 29 -31 26 50 -31 36 1 -31 24 19 0.28 -162 0 0 -31 10 37 0 33 8.1 10 252 66 -31 13 57 -31 7 17 -31 16 28 -31 4 45 0.28 -161 0 0 -30 50 42 0 33 8.6 9 251 66 -30 54 3 -30 47 22 -30 56 35 -30 44 50 0.29 -160 0 0 -30 30 26 0 33 9.2 8 251 65 -30 33 47 -30 27 6 -30 36 20 -30 24 34 0.29 -159 0 0 -30 9 50 0 33 9.6 7 250 64 -30 13 11 -30 6 29 -30 15 43 -30 3 56 0.30 -158 0 0 -29 48 52 0 33 10.0 6 250 63 -29 52 14 -29 45 31 -29 54 46 -29 42 58 0.30 -157 0 0 -29 27 34 0 33 10.4 5 249 62 -29 30 56 -29 24 12 -29 33 29 -29 21 39 0.31 -156 0 0 -29 5 55 0 33 10.7 4 249 62 -29 9 18 -29 2 33 -29 11 51 -29 0 0 0.33 -155 0 0 -28 43 57 0 33 10.9 3 248 61 -28 47 19 -28 40 34 -28 49 53 -28 38 1 0.35 -154 0 0 -28 21 38 0 33 11.1 2 248 60 -28 25 1 -28 18 16 -28 27 35 -28 15 42 0.39 -153 0 0 -27 59 0 0 33 11.2 1 247 59 -28 2 24 -27 55 37 -28 4 58 -27 53 3 0.51 -152 0 0 -27 36 3 0 33 11.2 0 247 58 -27 39 27 -27 32 40 -27 42 2 -27 30 5 2.82 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 6176-00747-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 59 21.7803 DE: -20 32 19.486 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 59 21.7803 DE: -20 32 19.486 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 11.2 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1751) Herget asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.004 distance from Earth [AU]: 3.57460 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.008", 0.001", 98.993° remarks: * orbital elements for (1751)Herget : Mean anomaly = 209.6041454266 deg Arg. of pericenter = 130.8896811052 deg Long. of node = 240.1694626971 deg Inclination = 8.1202833281 deg Eccentricity = 0.1723572780 Semimajor axis = 2.7915081526 AU Perihelion dist = 2.3103714058 AU Mag: H = 11.98, G = 0.15 Epoch of elements : MJD 60320.02060338 TDT (2024 Jan 11.0206) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.38,2024,1,11,0.494482,-0.064110,-0.237851,15.933883,-4.324863,-0.005187,0.001343,-0.000001,0.000000 107.7340,-20.6334,174.47,-21.91,False TYC 6176-00747-1,14.98938338,-20.5387459,11.74,11.16,10.85,0.0,0,,15.01195953,-20.6334329,6.98,6.85,0,0,0 1751,Herget,18.14,11.124,3.5746,0,0,2.794,-10.64,,1.0,0 0,209.3885,2024,1,10,130.8897,240.1695,8.1203,0.17236,2.79151,2.31037,11.98,5.0,0.15 1.380,0.0083,0.0014,99,0.0016,Known errors,1.34,0,-1,-1 20240111_0747-1,60137.01 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org