IOTA/IOTA-ES occultation update for (43) Ariadne / TYC 6304-01545-1 event on 2024 Nov 02, 01:12 UT Visible from Summary ------- On 2024 Nov 02 UT, the 60.864 km diameter asteroid (43) Ariadne will occult a 11.3 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.24 mag to 12.15 mag (the magnitude of the asteroid) for at most 1.850 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 Nov 02, 01:09 - 2024 Nov 02, 01:15 * geocentric midpoint of event [JD]: 2460616.55019025 * magnitude of target star: 11.33 * magnitude drop [mag]: 1.24 * estimated maximum duration [s]: 1.850 * Moon: 0 % sunlit, 62° distance * Sun: 68° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 62 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.001", 79°) * approx speed of asteroid's shadow [km/s]: 32.8617 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6304-01545-1 by 43 Ariadne on 2024 Nov 2 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 134 0 0 -17 28 32 1 9 5.8 0 111 66 -17 46 30 -17 10 35 -17 48 7 -17 8 59 .... 135 0 0 -17 50 9 1 9 5.8 1 110 67 -18 8 6 -17 32 12 -18 9 43 -17 30 36 0.21 136 0 0 -18 11 35 1 9 6.0 2 110 68 -18 29 31 -17 53 39 -18 31 8 -17 52 3 0.20 137 0 0 -18 32 50 1 9 6.1 3 110 69 -18 50 46 -18 14 56 -18 52 22 -18 13 19 0.20 138 0 0 -18 53 55 1 9 6.4 4 109 70 -19 11 49 -18 36 1 -19 13 26 -18 34 25 0.20 139 0 0 -19 14 48 1 9 6.7 5 109 71 -19 32 42 -18 56 55 -19 34 18 -18 55 19 0.20 140 0 0 -19 35 29 1 9 7.0 6 109 72 -19 53 22 -19 17 38 -19 54 58 -19 16 2 0.20 141 0 0 -19 55 59 1 9 7.5 7 108 72 -20 13 50 -19 38 8 -20 15 27 -19 36 32 0.20 142 0 0 -20 16 15 1 9 7.9 8 108 73 -20 34 6 -19 58 26 -20 35 42 -19 56 50 0.19 143 0 0 -20 36 19 1 9 8.5 9 108 74 -20 54 8 -20 18 30 -20 55 44 -20 16 55 0.19 144 0 0 -20 56 9 1 9 9.1 10 107 75 -21 13 58 -20 38 22 -21 15 34 -20 36 46 0.19 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23 -13 32 9 -12 52 46 0.20 - 67 0 0 -12 49 10 1 15 4.0 28 254 -38 -13 7 16 -12 31 6 -13 8 53 -12 29 29 0.20 - 66 0 0 -12 25 50 1 15 5.7 27 254 -39 -12 43 56 -12 7 46 -12 45 33 -12 6 9 0.20 - 65 0 0 -12 2 27 1 15 7.3 26 254 -40 -12 20 33 -11 44 23 -12 22 10 -11 42 45 0.20 - 64 0 0 -11 39 1 1 15 8.9 25 253 -41 -11 57 7 -11 20 57 -11 58 44 -11 19 20 0.20 - 63 0 0 -11 15 34 1 15 10.4 24 253 -42 -11 33 39 -10 57 29 -11 35 17 -10 55 52 0.20 - 62 0 0 -10 52 5 1 15 11.9 23 253 -44 -11 10 10 -10 34 0 -11 11 48 -10 32 23 0.20 - 61 0 0 -10 28 35 1 15 13.2 22 253 -45 -10 46 41 -10 10 31 -10 48 18 -10 8 54 0.20 - 60 0 0 -10 5 5 1 15 14.6 21 253 -46 -10 23 11 - 9 47 1 -10 24 48 - 9 45 24 0.20 - 59 0 0 - 9 41 36 1 15 15.8 20 252 -47 - 9 59 41 - 9 23 32 -10 1 18 - 9 21 55 0.20 - 58 0 0 - 9 18 7 1 15 17.0 19 252 -48 - 9 36 12 - 9 0 4 - 9 37 50 - 8 58 27 0.20 - 57 0 0 - 8 54 40 1 15 18.2 17 252 -49 - 9 12 45 - 8 36 37 - 9 14 22 - 8 35 0 0.21 - 56 0 0 - 8 31 15 1 15 19.2 16 252 -50 - 8 49 20 - 8 13 13 - 8 50 57 - 8 11 35 0.21 - 55 0 0 - 8 7 53 1 15 20.2 15 252 -51 - 8 25 57 - 7 49 51 - 8 27 34 - 7 48 14 0.21 - 54 0 0 - 7 44 34 1 15 21.2 14 252 -52 - 8 2 38 - 7 26 32 - 8 4 15 - 7 24 55 0.21 - 53 0 0 - 7 21 19 1 15 22.1 13 251 -53 - 7 39 22 - 7 3 18 - 7 40 59 - 7 1 41 0.21 - 52 0 0 - 6 58 9 1 15 22.9 12 251 -54 - 7 16 11 - 6 40 8 - 7 17 48 - 6 38 31 0.21 - 51 0 0 - 6 35 3 1 15 23.6 11 251 -55 - 6 53 4 - 6 17 2 - 6 54 41 - 6 15 26 0.21 - 50 0 0 - 6 12 2 1 15 24.3 10 251 -56 - 6 30 3 - 5 54 3 - 6 31 40 - 5 52 26 0.22 - 49 0 0 - 5 49 8 1 15 24.9 9 251 -57 - 6 7 8 - 5 31 9 - 6 8 45 - 5 29 32 0.22 - 48 0 0 - 5 26 20 1 15 25.4 8 251 -58 - 5 44 20 - 5 8 22 - 5 45 57 - 5 6 46 0.22 - 47 0 0 - 5 3 40 1 15 25.9 7 251 -59 - 5 21 38 - 4 45 42 - 5 23 15 - 4 44 6 0.23 - 46 0 0 - 4 41 7 1 15 26.3 6 251 -60 - 4 59 4 - 4 23 10 - 5 0 41 - 4 21 34 0.23 - 45 0 0 - 4 18 42 1 15 26.6 5 251 -61 - 4 36 39 - 4 0 46 - 4 38 15 - 3 59 10 0.24 - 44 0 0 - 3 56 26 1 15 26.9 4 250 -62 - 4 14 22 - 3 38 31 - 4 15 58 - 3 36 55 0.26 - 43 0 0 - 3 34 19 1 15 27.1 3 250 -63 - 3 52 14 - 3 16 25 - 3 53 50 - 3 14 49 0.28 - 42 0 0 - 3 12 21 1 15 27.2 1 250 -64 - 3 30 15 - 2 54 29 - 3 31 52 - 2 52 53 0.35 - 41 0 0 - 2 50 34 1 15 27.3 0 250 -65 - 3 8 27 - 2 32 43 - 3 10 3 - 2 31 6 0.73 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6304-01545-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 14 59.5314 DE: -19 44 22.888 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 14 59.5313 DE: -19 44 22.888 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 11.3 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (43) Ariadne asteroid class: approx. diameter [km]: 61 approx. diameter ["]: 0.042 distance from Earth [AU]: 2.01800 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#134 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): 0.021", 0.001", 78.651° remarks: * orbital elements for (43)Ariadne : Mean anomaly = 25.7700003579 deg Arg. of pericenter = 16.1260311463 deg Long. of node = 264.7472150057 deg Inclination = 3.4707001533 deg Eccentricity = 0.1684590704 Semimajor axis = 2.2030964627 AU Perihelion dist = 1.8319648806 AU Mag: H = 7.98, G = 0.11 Epoch of elements : MJD 60616.05019029 TDT (2024 Nov 02.0502) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1342023Apr24,1.85,2024,11,2,1.204566,0.024398,-0.182273,18.378734,2.500683,0.004813,0.000724,-0.000001,0.000000 -130.7677,-19.6974,157.82,-14.85,False TYC 6304-01545-1,19.24986988,-19.7396909,11.90,11.33,11.02,0.0,0,,19.27400971,-19.6974112,1.24,1.14,0,0,0 43,Ariadne,12.15,60.864,2.0180,0,0,5.671,10.91,,3.6,0 0,25.4535,2024,11,1,16.1260,264.7472,3.4707,0.16846,2.20310,1.83196,7.97,5.0,0.15 1.045,0.0207,0.0014,79,0.0019,Known errors,1.74,0,-1,-1 20241102_1545-1,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org