IOTA/IOTA-ES occultation update for (3615) Safronov / TYC 1342-00814-1 event on 2024 Apr 05, 00:01 UT Visible from Summary ------- On 2024 Apr 05 UT, the 24.267 km diameter asteroid (3615) Safronov will occult a 11.0 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 6.81 mag to 17.77 mag (the magnitude of the asteroid) for at most 1.470 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: 99 * date and approx. time of event: 2024 Apr 04, 23:55 - 2024 Apr 05, 00:06 * geocentric midpoint of event [JD]: 2460405.50085079 * magnitude of target star: 10.96 * magnitude drop [mag]: 6.81 * estimated maximum duration [s]: 1.470 * Moon: 19 % sunlit, 136° distance * Sun: 85° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 30 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.002", 94°) * approx speed of asteroid's shadow [km/s]: 16.4699 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1342-00814-1 by 3615 Safronov on 2024 Apr 5 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 -166 0 0 -31 27 47 23 56 1.0 - 1 63 51 -31 36 50 -31 18 45 -31 39 56 -31 15 40 .... -165 0 0 -31 2 12 23 56 1.2 - 2 63 51 -31 11 14 -30 53 10 -31 14 20 -30 50 6 0.39 -164 0 0 -30 36 41 23 56 1.4 - 3 62 51 -30 45 43 -30 27 40 -30 48 48 -30 24 36 0.51 -163 0 0 -30 11 16 23 56 1.9 - 4 62 51 -30 20 17 -30 2 16 -30 23 22 -29 59 12 0.57 -162 0 0 -29 45 57 23 56 2.4 - 5 61 51 -29 54 57 -29 36 58 -29 58 2 -29 33 54 0.60 -161 0 0 -29 20 45 23 56 3.1 - 5 61 51 -29 29 44 -29 11 47 -29 32 49 -29 8 44 0.62 -160 0 0 -28 55 41 23 56 3.9 - 6 60 51 -29 4 40 -28 46 44 -29 7 44 -28 43 41 0.64 -159 0 0 -28 30 46 23 56 4.9 - 7 60 51 -28 39 43 -28 21 50 -28 42 47 -28 18 47 0.65 -158 0 0 -28 6 0 23 56 6.0 - 8 59 51 -28 14 56 -27 57 5 -28 18 0 -27 54 2 0.66 -157 0 0 -27 41 24 23 56 7.3 - 9 59 50 -27 50 19 -27 32 29 -27 53 22 -27 29 27 0.66 -156 0 0 -27 16 58 23 56 8.7 - 10 58 50 -27 25 52 -27 8 5 -27 28 55 -27 5 3 0.67 -155 0 0 -26 52 44 23 56 10.2 - 11 58 50 -27 1 37 -26 43 52 -27 4 40 -26 40 50 0.67 -154 0 0 -26 28 42 23 56 11.9 - 12 57 50 -26 37 34 -26 19 50 -26 40 36 -26 16 49 0.68 -153 0 0 -26 4 52 23 56 13.7 - 13 57 49 -26 13 44 -25 56 2 -26 16 45 -25 53 1 0.68 -152 0 0 -25 41 17 23 56 15.7 - 14 56 49 -25 50 7 -25 32 27 -25 53 8 -25 29 27 0.68 -151 0 0 -25 17 55 23 56 17.8 - 15 56 49 -25 26 44 -25 9 7 -25 29 45 -25 6 7 0.69 -150 0 0 -24 54 48 23 56 20.0 - 16 55 48 -25 3 36 -24 46 1 -25 6 37 -24 43 1 0.69 -149 0 0 -24 31 56 23 56 22.4 - 17 55 48 -24 40 43 -24 23 10 -24 43 44 -24 20 11 0.69 -148 0 0 -24 9 21 23 56 24.9 - 18 54 48 -24 18 7 -24 0 36 -24 21 7 -23 57 37 0.69 -147 0 0 -23 47 2 23 56 27.6 - 19 54 47 -23 55 47 -23 38 18 -23 58 47 -23 35 20 0.69 -146 0 0 -23 25 1 23 56 30.3 - 20 53 47 -23 33 44 -23 16 18 -23 36 44 -23 13 20 0.70 -145 0 0 -23 3 17 23 56 33.3 - 21 53 46 -23 12 0 -22 54 36 -23 14 59 -22 51 38 0.70 -144 0 0 -22 41 52 23 56 36.3 - 22 52 46 -22 50 34 -22 33 12 -22 53 32 -22 30 14 0.70 -143 0 0 -22 20 46 23 56 39.5 - 23 52 45 -22 29 26 -22 12 7 -22 32 25 -22 9 9 0.70 -142 0 0 -21 59 59 23 56 42.8 - 24 51 45 -22 8 39 -21 51 21 -22 11 37 -21 48 24 0.70 -141 0 0 -21 39 33 23 56 46.3 - 25 51 44 -21 48 11 -21 30 56 -21 51 9 -21 27 59 0.70 -140 0 0 -21 19 27 23 56 49.9 - 26 50 43 -21 28 5 -21 10 51 -21 31 2 -21 7 55 0.70 -139 0 0 -20 59 43 23 56 53.6 - 27 50 43 -21 8 19 -20 51 8 -21 11 15 -20 48 12 0.70 -138 0 0 -20 40 20 23 56 57.4 - 28 49 42 -20 48 55 -20 31 46 -20 51 51 -20 28 50 0.71 -137 0 0 -20 21 19 23 57 1.3 - 29 49 41 -20 29 53 -20 12 46 -20 32 49 -20 9 51 0.71 -136 0 0 -20 2 41 23 57 5.4 - 29 48 41 -20 11 14 -19 54 9 -20 14 9 -19 51 14 0.71 -135 0 0 -19 44 26 23 57 9.6 - 30 47 40 -19 52 57 -19 35 55 -19 55 53 -19 33 0 0.71 -134 0 0 -19 26 34 23 57 13.9 - 31 47 39 -19 35 5 -19 18 4 -19 37 59 -19 15 10 0.71 -133 0 0 -19 9 6 23 57 18.3 - 32 46 38 -19 17 36 -19 0 37 -19 20 30 -18 57 43 0.71 -132 0 0 -18 52 2 23 57 22.8 - 33 46 38 -19 0 31 -18 43 35 -19 3 25 -18 40 41 0.71 -131 0 0 -18 35 24 23 57 27.5 - 34 45 37 -18 43 51 -18 26 57 -18 46 45 -18 24 4 0.71 -130 0 0 -18 19 10 23 57 32.2 - 35 44 36 -18 27 37 -18 10 44 -18 30 30 -18 7 51 0.71 -129 0 0 -18 3 21 23 57 37.0 - 36 44 35 -18 11 47 -17 54 56 -18 14 40 -17 52 4 0.71 -128 0 0 -17 47 59 23 57 42.0 - 37 43 35 -17 56 24 -17 39 35 -17 59 17 -17 36 43 0.71 -127 0 0 -17 33 2 23 57 47.0 - 37 42 34 -17 41 26 -17 24 39 -17 44 19 -17 21 47 0.72 -126 0 0 -17 18 32 23 57 52.2 - 38 41 33 -17 26 55 -17 10 10 -17 29 47 -17 7 18 0.72 -125 0 0 -17 4 29 23 57 57.4 - 39 41 32 -17 12 51 -16 56 7 -17 15 43 -16 53 16 0.72 -124 0 0 -16 50 52 23 58 2.8 - 40 40 31 -16 59 14 -16 42 31 -17 2 5 -16 39 41 0.72 -123 0 0 -16 37 43 23 58 8.2 - 41 39 30 -16 46 4 -16 29 23 -16 48 55 -16 26 33 0.72 -122 0 0 -16 25 1 23 58 13.7 - 41 38 29 -16 33 21 -16 16 42 -16 36 12 -16 13 52 0.72 -121 0 0 -16 12 48 23 58 19.3 - 42 37 29 -16 21 7 -16 4 29 -16 23 57 -16 1 39 0.72 -120 0 0 -16 1 2 23 58 24.9 - 43 36 28 -16 9 20 -15 52 44 -16 12 11 -15 49 54 0.72 -119 0 0 -15 49 44 23 58 30.7 - 44 35 27 -15 58 2 -15 41 27 -16 0 52 -15 38 38 0.72 -118 0 0 -15 38 55 23 58 36.5 - 44 34 26 -15 47 12 -15 30 39 -15 50 2 -15 27 50 0.72 -117 0 0 -15 28 35 23 58 42.4 - 45 34 25 -15 36 51 -15 20 19 -15 39 41 -15 17 30 0.72 -116 0 0 -15 18 43 23 58 48.4 - 46 32 24 -15 26 59 -15 10 29 -15 29 49 -15 7 40 0.72 -115 0 0 -15 9 21 23 58 54.4 - 46 31 23 -15 17 36 -15 1 7 -15 20 26 -14 58 18 0.72 -114 0 0 -15 0 28 23 59 0.5 - 47 30 22 -15 8 42 -14 52 14 -15 11 32 -14 49 26 0.72 -113 0 0 -14 52 4 23 59 6.6 - 48 29 21 -15 0 18 -14 43 51 -15 3 7 -14 41 3 0.72 -112 0 0 -14 44 10 23 59 12.9 - 48 28 20 -14 52 23 -14 35 57 -14 55 12 -14 33 9 0.72 -111 0 0 -14 36 45 23 59 19.1 - 49 27 19 -14 44 58 -14 28 33 -14 47 47 -14 25 45 0.72 -110 0 0 -14 29 51 23 59 25.4 - 49 26 18 -14 38 3 -14 21 39 -14 40 52 -14 18 51 0.73 -109 0 0 -14 23 26 23 59 31.8 - 50 24 17 -14 31 38 -14 15 15 -14 34 26 -14 12 27 0.73 -108 0 0 -14 17 31 23 59 38.2 - 50 23 16 -14 25 43 -14 9 20 -14 28 31 -14 6 33 0.73 -107 0 0 -14 12 7 23 59 44.7 - 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42 0 0 -25 37 39 0 5 54.8 21 309 -46 -25 46 30 -25 28 50 -25 49 31 -25 25 49 0.73 - 41 0 0 -26 1 18 0 5 57.7 20 308 -47 -26 10 10 -25 52 28 -26 13 12 -25 49 27 0.73 - 40 0 0 -26 25 11 0 6 0.4 19 308 -48 -26 34 3 -26 16 19 -26 37 6 -26 13 18 0.73 - 39 0 0 -26 49 16 0 6 3.0 18 307 -48 -26 58 10 -26 40 24 -27 1 12 -26 37 22 0.73 - 38 0 0 -27 13 34 0 6 5.4 17 307 -49 -27 22 29 -27 4 40 -27 25 32 -27 1 38 0.73 - 37 0 0 -27 38 3 0 6 7.7 16 306 -50 -27 46 59 -27 29 9 -27 50 2 -27 26 6 0.73 - 36 0 0 -28 2 44 0 6 9.9 15 306 -50 -28 11 40 -27 53 48 -28 14 44 -27 50 45 0.73 - 35 0 0 -28 27 34 0 6 11.9 14 305 -51 -28 36 32 -28 18 38 -28 39 36 -28 15 34 0.73 - 34 0 0 -28 52 34 0 6 13.8 13 305 -51 -29 1 32 -28 43 36 -29 4 37 -28 40 33 0.73 - 33 0 0 -29 17 42 0 6 15.5 12 304 -52 -29 26 42 -29 8 44 -29 29 46 -29 5 40 0.73 - 32 0 0 -29 42 59 0 6 17.1 11 304 -52 -29 51 59 -29 34 0 -29 55 4 -29 30 56 0.73 - 31 0 0 -30 8 23 0 6 18.6 10 303 -53 -30 17 24 -29 59 23 -30 20 29 -29 56 18 0.73 - 30 0 0 -30 33 53 0 6 19.9 9 303 -53 -30 42 55 -30 24 52 -30 46 0 -30 21 47 0.74 - 29 0 0 -30 59 28 0 6 21.1 8 302 -54 -31 8 31 -30 50 27 -31 11 37 -30 47 22 0.74 - 28 0 0 -31 25 9 0 6 22.2 7 302 -54 -31 34 13 -31 16 7 -31 37 19 -31 13 2 0.74 - 27 0 0 -31 50 54 0 6 23.1 6 301 -55 -31 59 58 -31 41 51 -32 3 5 -31 38 46 0.74 - 26 0 0 -32 16 42 0 6 23.9 5 301 -55 -32 25 47 -32 7 39 -32 28 54 -32 4 33 0.75 - 25 0 0 -32 42 33 0 6 24.5 4 300 -55 -32 51 39 -32 33 29 -32 54 46 -32 30 23 0.75 - 24 0 0 -33 8 26 0 6 25.0 3 299 -56 -33 17 33 -32 59 21 -33 20 40 -32 56 15 0.76 - 23 0 0 -33 34 20 0 6 25.4 2 299 -56 -33 43 27 -33 25 14 -33 46 34 -33 22 8 0.78 - 22 0 0 -34 0 15 0 6 25.7 1 298 -56 -34 9 22 -33 51 8 -34 12 29 -33 48 2 0.82 - 21 0 0 -34 26 9 0 6 25.8 1 298 -56 -34 35 17 -34 17 2 -34 38 24 -34 13 55 0.99 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: TYC 1342-00814-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 44 11.8069 DE: +22 24 01.766 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 44 11.8068 DE: +22 24 01.766 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.0 * B mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3615) Safronov asteroid class: approx. diameter [km]: 24 approx. diameter ["]: 0.010 distance from Earth [AU]: 3.32070 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.016", 0.002", 93.7° remarks: * orbital elements for (3615)Safronov : Mean anomaly = 244.3015850869 deg Arg. of pericenter = 111.0679295402 deg Long. of node = 134.8724707218 deg Inclination = 2.1134385632 deg Eccentricity = 0.1352739643 Semimajor axis = 3.1532622484 AU Perihelion dist = 2.7267079637 AU Mag: H = 11.61, G = 0.15 Epoch of elements : MJD 60405.00085075 TDT (2024 Apr 05.0009) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,1.47,2024,4,5,0.020419,-0.016596,-0.588986,9.292295,-0.264407,0.005847,-0.000464,0.000000,0.000000 -92.6821,22.3768,-179.63,6.18,False TYC 1342-00814-1,6.73661304,22.4004905,11.16,10.96,10.85,0.0,0,,6.76085731,22.3767908,6.81,6.47,0,0,0 3615,Safronov,17.77,24.267,3.3207,0,0,1.774,-0.70,,2.2,0 0,244.1254,2024,4,4,111.0679,134.8725,2.1134,0.13527,3.15326,2.72671,11.61,5.0,0.15 1.171,0.0157,0.0016,94,0.0017,Known errors,1.35,0,-1,-1 20240405_0814-1,60139.27 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org