IOTA/IOTA-ES occultation update for (1904) Massevitch / TYC 1330-01568-1 event on 2024 Oct 15, 15:22 UT Visible from Summary ------- On 2024 Oct 15 UT, the 14.364 km diameter asteroid (1904) Massevitch will occult a 11.4 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 4.76 mag to 16.15 mag (the magnitude of the asteroid) for at most 1.540 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: 94 * date and approx. time of event: 2024 Oct 15, 15:11 - 2024 Oct 15, 15:32 * geocentric midpoint of event [JD]: 2460599.14030792 * magnitude of target star: 11.40 * magnitude drop [mag]: 4.76 * estimated maximum duration [s]: 1.540 * Moon: 95 % sunlit, 102° distance * Sun: 102° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.45 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.003", 80°) * approx speed of asteroid's shadow [km/s]: 9.3543 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1330-01568-1 by 1904 Massevitch on 2024 Oct 15 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 125 0 0 -20 7 46 15 11 23.0 1 73 -61 -20 12 5 -20 3 27 -20 15 57 -19 59 36 .... 126 0 0 -19 50 28 15 11 23.3 2 72 -61 -19 54 47 -19 46 9 -19 58 39 -19 42 17 0.20 127 0 0 -19 33 8 15 11 23.8 3 72 -62 -19 37 27 -19 28 49 -19 41 19 -19 24 57 0.25 128 0 0 -19 15 47 15 11 24.5 4 72 -62 -19 20 6 -19 11 28 -19 23 58 -19 7 36 0.28 129 0 0 -18 58 25 15 11 25.4 5 71 -62 -19 2 44 -18 54 6 -19 6 36 -18 50 15 0.29 130 0 0 -18 41 4 15 11 26.6 6 71 -63 -18 45 23 -18 36 45 -18 49 14 -18 32 53 0.30 131 0 0 -18 23 42 15 11 28.0 7 71 -63 -18 28 1 -18 19 23 -18 31 53 -18 15 32 0.31 132 0 0 -18 6 21 15 11 29.6 8 70 -63 -18 10 40 -18 2 2 -18 14 32 -17 58 11 0.32 133 0 0 -17 49 1 15 11 31.4 9 70 -63 -17 53 20 -17 44 43 -17 57 12 -17 40 51 0.32 134 0 0 -17 31 43 15 11 33.4 10 70 -63 -17 36 2 -17 27 24 -17 39 53 -17 23 33 0.32 135 0 0 -17 14 26 15 11 35.7 11 69 -63 -17 18 45 -17 10 8 -17 22 36 -17 6 16 0.33 136 0 0 -16 57 12 15 11 38.2 12 69 -63 -17 1 30 -16 52 53 -17 5 22 -16 49 2 0.33 137 0 0 -16 40 0 15 11 40.9 13 69 -63 -16 44 18 -16 35 41 -16 48 10 -16 31 50 0.33 138 0 0 -16 22 51 15 11 43.9 14 69 -63 -16 27 9 -16 18 32 -16 31 0 -16 14 41 0.33 139 0 0 -16 5 45 15 11 47.1 15 68 -63 -16 10 3 -16 1 27 -16 13 55 -15 57 36 0.33 140 0 0 -15 48 43 15 11 50.5 16 68 -63 -15 53 1 -15 44 25 -15 56 52 -15 40 34 0.34 141 0 0 -15 31 45 15 11 54.1 17 68 -63 -15 36 4 -15 27 27 -15 39 55 -15 23 36 0.34 142 0 0 -15 14 52 15 11 57.9 18 67 -62 -15 19 10 -15 10 34 -15 23 1 -15 6 43 0.34 143 0 0 -14 58 4 15 12 2.0 19 67 -62 -15 2 22 -14 53 46 -15 6 13 -14 49 55 0.34 144 0 0 -14 41 21 15 12 6.3 20 67 -62 -14 45 39 -14 37 3 -14 49 30 -14 33 13 0.34 145 0 0 -14 24 44 15 12 10.8 21 66 -62 -14 29 2 -14 20 26 -14 32 52 -14 16 36 0.34 146 0 0 -14 8 13 15 12 15.6 22 66 -61 -14 12 31 -14 3 56 -14 16 21 -14 0 5 0.34 147 0 0 -13 51 49 15 12 20.5 23 66 -61 -13 56 6 -13 47 31 -13 59 57 -13 43 41 0.34 148 0 0 -13 35 32 15 12 25.7 24 65 -60 -13 39 49 -13 31 14 -13 43 39 -13 27 24 0.34 149 0 0 -13 19 22 15 12 31.1 25 65 -60 -13 23 39 -13 15 4 -13 27 29 -13 11 15 0.34 150 0 0 -13 3 19 15 12 36.7 26 65 -59 -13 7 37 -12 59 2 -13 11 27 -12 55 13 0.34 151 0 0 -12 47 25 15 12 42.6 27 65 -59 -12 51 42 -12 43 9 -12 55 32 -12 39 19 0.35 152 0 0 -12 31 40 15 12 48.6 28 64 -58 -12 35 57 -12 27 23 -12 39 46 -12 23 34 0.35 153 0 0 -12 16 3 15 12 54.9 29 64 -58 -12 20 20 -12 11 47 -12 24 10 -12 7 58 0.35 154 0 0 -12 0 36 15 13 1.3 30 64 -57 -12 4 53 -11 56 20 -12 8 42 -11 52 31 0.35 155 0 0 -11 45 19 15 13 8.0 31 63 -56 -11 49 35 -11 41 2 -11 53 24 -11 37 13 0.35 156 0 0 -11 30 11 15 13 14.9 32 63 -56 -11 34 27 -11 25 55 -11 38 16 -11 22 6 0.35 157 0 0 -11 15 14 15 13 22.0 33 62 -55 -11 19 30 -11 10 58 -11 23 19 -11 7 9 0.35 158 0 0 -11 0 28 15 13 29.3 34 62 -54 -11 4 43 -10 56 12 -11 8 32 -10 52 23 0.35 159 0 0 -10 45 53 15 13 36.8 35 62 -53 -10 50 8 -10 41 37 -10 53 57 -10 37 49 0.35 160 0 0 -10 31 29 15 13 44.5 36 61 -53 -10 35 44 -10 27 14 -10 39 33 -10 23 25 0.35 161 0 0 -10 17 17 15 13 52.3 37 61 -52 -10 21 32 -10 13 2 -10 25 21 -10 9 14 0.35 162 0 0 -10 3 18 15 14 0.4 38 61 -51 -10 7 33 - 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73 0 0 -18 25 56 15 32 42.8 0 287 72 -18 30 15 -18 21 37 -18 34 6 -18 17 46 0.56 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1330-01568-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 40 52.3866 DE: +15 54 21.572 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 40 52.3867 DE: +15 54 21.572 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.4 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1904) Massevitch asteroid class: approx. diameter [km]: 14 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.25990 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#61 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): 0.014", 0.003", 79.576° remarks: * orbital elements for (1904)Massevitch : Mean anomaly = 61.1166638828 deg Arg. of pericenter = 262.4594076160 deg Long. of node = 106.2902544530 deg Inclination = 12.8312635844 deg Eccentricity = 0.0747965258 Semimajor axis = 2.7458274533 AU Perihelion dist = 2.5404490993 AU Mag: H = 11.21, G = 0.15 Epoch of elements : MJD 60598.64030692 TDT (2024 Oct 15.6403) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#612023Apr24,1.54,2024,10,15,15.367390,0.005672,-0.344031,5.279080,0.089185,-0.005541,0.000566,0.000000,0.000000 -154.5851,15.8844,-54.10,-8.86,False TYC 1330-01568-1,6.68121848,15.9059924,11.93,11.40,11.11,0.0,0,,6.70502158,15.8843563,4.76,4.60,0,0,0 1904,Massevitch,16.15,14.364,2.2599,0,0,1.424,0.35,,1.2,0 0,60.9780,2024,10,15,262.4594,106.2903,12.8313,0.07480,2.74583,2.54045,11.21,5.0,0.15 1.447,0.0140,0.0032,80,0.0039,Known errors,0.83,0,-1,-1 20241015_1568-1,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:16 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org