IOTA/IOTA-ES occultation update for (4079) Britten / TYC 6171-00028-1 event on 2024 Apr 01, 07:44 UT Visible from Summary ------- On 2024 Apr 01 UT, the 16.439 km diameter asteroid (4079) Britten will occult a 11.5 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 6.26 mag to 17.80 mag (the magnitude of the asteroid) for at most 2.840 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: 96 * date and approx. time of event: 2024 Apr 01, 07:26 - 2024 Apr 01, 08:02 * geocentric midpoint of event [JD]: 2460401.82246412 * magnitude of target star: 11.54 * magnitude drop [mag]: 6.26 * estimated maximum duration [s]: 2.840 * Moon: 59 % sunlit, 39° distance * Sun: 139° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.41 * 1 sigma uncertainty interval [seconds]: +/- 7.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.025, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.004", 106°) * approx speed of asteroid's shadow [km/s]: 5.7965 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6171-00028-1 by 4079 Britten on 2024 Apr 1 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 -161 0 0 25 11 13 8 2 12.5 0 109 -40 25 16 4 25 6 22 25 20 4 25 2 22 .... -160 0 0 24 52 37 8 2 12.2 1 109 -41 24 57 28 24 47 45 25 1 28 24 43 45 -0.07 -159 0 0 24 33 46 8 2 11.7 2 110 -42 24 38 38 24 28 55 24 42 39 24 24 54 -0.15 -158 0 0 24 14 43 8 2 10.8 3 110 -43 24 19 35 24 9 51 24 23 35 24 5 50 -0.18 -157 0 0 23 55 25 8 2 9.6 4 110 -44 24 0 18 23 50 33 24 4 19 23 46 32 -0.19 -156 0 0 23 35 55 8 2 8.0 5 111 -45 23 40 48 23 31 3 23 44 49 23 27 1 -0.21 -155 0 0 23 16 12 8 2 6.2 6 111 -46 23 21 5 23 11 19 23 25 7 23 7 18 -0.21 -154 0 0 22 56 17 8 2 4.0 7 112 -46 23 1 10 22 51 24 23 5 12 22 47 22 -0.22 -153 0 0 22 36 10 8 2 1.5 8 112 -47 22 41 3 22 31 17 22 45 5 22 27 15 -0.22 -152 0 0 22 15 51 8 1 58.6 9 112 -48 22 20 45 22 10 58 22 24 47 22 6 56 -0.23 -151 0 0 21 55 22 8 1 55.5 10 113 -49 22 0 16 21 50 28 22 4 18 21 46 26 -0.23 -150 0 0 21 34 41 8 1 52.0 11 113 -50 21 39 35 21 29 47 21 43 38 21 25 45 -0.23 -149 0 0 21 13 51 8 1 48.1 12 113 -51 21 18 45 21 8 56 21 22 48 21 4 54 -0.23 -148 0 0 20 52 50 8 1 44.0 13 114 -52 20 57 45 20 47 56 21 1 48 20 43 53 -0.23 -147 0 0 20 31 40 8 1 39.5 14 114 -53 20 36 35 20 26 45 20 40 38 20 22 43 -0.24 -146 0 0 20 10 21 8 1 34.7 15 115 -54 20 15 16 20 5 26 20 19 20 20 1 23 -0.24 -145 0 0 19 48 54 8 1 29.5 16 115 -55 19 53 49 19 43 59 19 57 52 19 39 56 -0.24 -144 0 0 19 27 18 8 1 24.0 17 115 -56 19 32 14 19 22 23 19 36 17 19 18 20 -0.24 -143 0 0 19 5 35 8 1 18.2 18 116 -57 19 10 31 19 0 40 19 14 34 18 56 36 -0.24 -142 0 0 18 43 45 8 1 12.1 19 116 -58 18 48 41 18 38 49 18 52 44 18 34 46 -0.24 -141 0 0 18 21 48 8 1 5.6 20 116 -59 18 26 44 18 16 52 18 30 47 18 12 49 -0.24 -140 0 0 17 59 45 8 0 58.9 21 117 -59 18 4 41 17 54 49 18 8 44 17 50 45 -0.24 -139 0 0 17 37 36 8 0 51.7 22 117 -60 17 42 32 17 32 40 17 46 36 17 28 36 -0.24 -138 0 0 17 15 22 8 0 44.3 23 117 -61 17 20 17 17 10 26 17 24 22 17 6 22 -0.24 -137 0 0 16 53 3 8 0 36.6 24 118 -62 16 57 59 16 48 7 17 2 3 16 44 3 -0.24 -136 0 0 16 30 39 8 0 28.5 25 118 -63 16 35 35 16 25 43 16 39 39 16 21 39 -0.24 -135 0 0 16 8 12 8 0 20.1 26 118 -64 16 13 8 16 3 16 16 17 12 15 59 12 -0.24 -134 0 0 15 45 41 8 0 11.4 27 119 -65 15 50 38 15 40 46 15 54 42 15 36 42 -0.24 -133 0 0 15 23 8 8 0 2.4 28 119 -66 15 28 4 15 18 12 15 32 8 15 14 8 -0.24 -132 0 0 15 0 32 7 59 53.0 29 119 -66 15 5 28 14 55 36 15 9 33 14 51 33 -0.24 -131 0 0 14 37 55 7 59 43.4 30 119 -67 14 42 51 14 32 59 14 46 55 14 28 55 -0.25 -130 0 0 14 15 16 7 59 33.5 31 120 -68 14 20 12 14 10 20 14 24 16 14 6 16 -0.25 -129 0 0 13 52 36 7 59 23.3 32 120 -69 13 57 32 13 47 40 14 1 36 13 43 36 -0.25 -128 0 0 13 29 55 7 59 12.7 33 120 -70 13 34 51 13 25 0 13 38 55 13 20 56 -0.25 -127 0 0 13 7 15 7 59 1.9 34 121 -70 13 12 11 13 2 20 13 16 15 12 58 16 -0.25 -126 0 0 12 44 35 7 58 50.8 35 121 -71 12 49 31 12 39 40 12 53 35 12 35 36 -0.25 -125 0 0 12 21 57 7 58 39.4 36 121 -72 12 26 52 12 17 1 12 30 56 12 12 58 -0.25 -124 0 0 11 59 19 7 58 27.8 37 122 -72 12 4 15 11 54 24 12 8 18 11 50 21 -0.24 -123 0 0 11 36 44 7 58 15.9 38 122 -73 11 41 39 11 31 49 11 45 43 11 27 46 -0.24 -122 0 0 11 14 11 7 58 3.7 39 122 -74 11 19 6 11 9 16 11 23 10 11 5 13 -0.24 -121 0 0 10 51 41 7 57 51.2 40 123 -74 10 56 36 10 46 46 11 0 39 10 42 43 -0.24 -120 0 0 10 29 14 7 57 38.5 41 123 -75 10 34 9 10 24 20 10 38 12 10 20 17 -0.24 -119 0 0 10 6 52 7 57 25.5 42 123 -75 10 11 46 10 1 57 10 15 49 9 57 54 -0.24 -118 0 0 9 44 33 7 57 12.3 43 124 -76 9 49 27 9 39 39 9 53 30 9 35 36 -0.24 -117 0 0 9 22 19 7 56 58.8 44 124 -76 9 27 13 9 17 25 9 31 16 9 13 22 -0.24 -116 0 0 9 0 10 7 56 45.1 45 124 -76 9 5 4 8 55 16 9 9 7 8 51 14 -0.24 -115 0 0 8 38 7 7 56 31.2 46 125 -76 8 43 1 8 33 13 8 47 3 8 29 11 -0.24 -114 0 0 8 16 10 7 56 17.0 47 125 -76 8 21 3 8 11 16 8 25 5 8 7 14 -0.24 -113 0 0 7 54 19 7 56 2.7 47 126 -76 7 59 12 7 49 26 8 3 14 7 45 24 -0.24 -112 0 0 7 32 35 7 55 48.1 48 126 -76 7 37 28 7 27 42 7 41 30 7 23 40 -0.24 -111 0 0 7 10 58 7 55 33.3 49 126 -76 7 15 51 7 6 5 7 19 53 7 2 4 -0.24 -110 0 0 6 49 29 7 55 18.3 50 127 -76 6 54 22 6 44 36 6 58 23 6 40 35 -0.24 -109 0 0 6 28 8 7 55 3.1 51 127 -76 6 33 0 6 23 16 6 37 1 6 19 15 -0.24 -108 0 0 6 6 55 7 54 47.7 52 128 -75 6 11 47 6 2 3 6 15 48 5 58 3 -0.24 -107 0 0 5 45 51 7 54 32.1 53 128 -75 5 50 43 5 41 0 5 54 44 5 36 59 -0.24 -106 0 0 5 24 57 7 54 16.4 54 129 -75 5 29 48 5 20 5 5 33 48 5 16 5 -0.24 -105 0 0 5 4 11 7 54 0.5 55 129 -74 5 9 3 4 59 20 5 13 3 4 55 20 -0.24 -104 0 0 4 43 36 7 53 44.4 56 130 -74 4 48 27 4 38 45 4 52 27 4 34 45 -0.24 -103 0 0 4 23 11 7 53 28.2 57 130 -73 4 28 2 4 18 20 4 32 1 4 14 21 -0.24 -102 0 0 4 2 56 7 53 11.8 58 131 -72 4 7 47 3 58 6 4 11 46 3 54 7 -0.24 -101 0 0 3 42 53 7 52 55.3 59 132 -72 3 47 43 3 38 3 3 51 42 3 34 4 -0.24 -100 0 0 3 23 0 7 52 38.6 60 132 -71 3 27 50 3 18 11 3 31 49 3 14 12 -0.24 - 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6 1 4 -0.24 - 1 0 0 - 5 41 33 7 27 42.0 21 254 19 - 5 36 53 - 5 46 13 - 5 33 2 - 5 50 4 -0.24 - 0 0 0 - 5 30 11 7 27 35.2 20 254 20 - 5 25 30 - 5 34 51 - 5 21 39 - 5 38 42 -0.24 1 0 0 - 5 18 27 7 27 28.7 19 254 21 - 5 13 47 - 5 23 8 - 5 9 55 - 5 26 59 -0.25 2 0 0 - 5 6 23 7 27 22.6 18 254 22 - 5 1 42 - 5 11 4 - 4 57 50 - 5 14 55 -0.25 3 0 0 - 4 53 57 7 27 16.7 17 254 23 - 4 49 15 - 4 58 38 - 4 45 23 - 5 2 30 -0.25 4 0 0 - 4 41 10 7 27 11.1 16 254 24 - 4 36 28 - 4 45 51 - 4 32 35 - 4 49 44 -0.25 5 0 0 - 4 28 1 7 27 5.9 15 254 25 - 4 23 19 - 4 32 44 - 4 19 27 - 4 36 36 -0.25 6 0 0 - 4 14 32 7 27 1.0 14 254 26 - 4 9 50 - 4 19 15 - 4 5 57 - 4 23 7 -0.25 7 0 0 - 4 0 42 7 26 56.4 13 254 27 - 3 55 59 - 4 5 25 - 3 52 6 - 4 9 18 -0.25 8 0 0 - 3 46 31 7 26 52.1 12 254 28 - 3 41 47 - 3 51 14 - 3 37 54 - 3 55 7 -0.25 9 0 0 - 3 31 59 7 26 48.1 11 254 29 - 3 27 15 - 3 36 42 - 3 23 21 - 3 40 36 -0.25 10 0 0 - 3 17 6 7 26 44.5 10 254 30 - 3 12 22 - 3 21 50 - 3 8 28 - 3 25 44 -0.25 11 0 0 - 3 1 53 7 26 41.3 9 253 31 - 2 57 8 - 3 6 37 - 2 53 14 - 3 10 32 -0.25 12 0 0 - 2 46 19 7 26 38.3 8 253 32 - 2 41 34 - 2 51 4 - 2 37 39 - 2 54 59 -0.25 13 0 0 - 2 30 25 7 26 35.7 7 253 33 - 2 25 40 - 2 35 10 - 2 21 44 - 2 39 6 -0.25 14 0 0 - 2 14 11 7 26 33.5 6 253 34 - 2 9 25 - 2 18 57 - 2 5 29 - 2 22 52 -0.25 15 0 0 - 1 57 36 7 26 31.6 5 253 35 - 1 52 50 - 2 2 23 - 1 48 54 - 2 6 19 -0.26 16 0 0 - 1 40 42 7 26 30.1 4 253 36 - 1 35 56 - 1 45 29 - 1 31 59 - 1 49 25 -0.26 17 0 0 - 1 23 28 7 26 29.0 3 253 37 - 1 18 41 - 1 28 15 - 1 14 44 - 1 32 12 -0.26 18 0 0 - 1 5 55 7 26 28.2 2 253 38 - 1 1 7 - 1 10 42 - 0 57 10 - 1 14 39 -0.27 19 0 0 - 0 48 2 7 26 27.8 1 253 39 - 0 43 14 - 0 52 50 - 0 39 16 - 0 56 47 -0.29 Uncertainty in time = +/- 7 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: TYC 6171-00028-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 23 26.0774 DE: -16 42 43.591 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 23 26.0774 DE: -16 42 43.591 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4079) Britten asteroid class: approx. diameter [km]: 16 approx. diameter ["]: 0.010 distance from Earth [AU]: 2.24970 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 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): 0.026", 0.004", 106° remarks: * orbital elements for (4079)Britten : Mean anomaly = 66.5084563198 deg Arg. of pericenter = 66.6890803448 deg Long. of node = 74.2296646841 deg Inclination = 2.3871223285 deg Eccentricity = 0.1175235860 Semimajor axis = 3.1837895011 AU Perihelion dist = 2.8096191417 AU Mag: H = 12.87, G = 0.15 Epoch of elements : MJD 60401.32246380 TDT (2024 Apr 01.3225) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr24,2.84,2024,4,1,7.739139,0.051851,0.216408,-3.181386,0.763394,-0.003759,0.000828,0.000001,0.000000 -75.0469,-16.7998,64.85,4.77,False TYC 6171-00028-1,15.39057704,-16.7121086,11.81,11.54,11.39,0.0,0,,15.41355169,-16.7998084,6.26,5.96,0,0,0 4079,Britten,17.80,16.439,2.2497,0,0,-0.866,2.98,,1.8,0 0,66.4525,2024,4,1,66.6891,74.2297,2.3871,0.11752,3.18379,2.80962,12.86,5.0,0.15 1.412,0.0260,0.0040,106,0.0042,Known errors,0.98,0,-1,-1 20240401_0028-1,60139.27 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org