IOTA/IOTA-ES occultation update for (4209) Briggs / TYC 7822-00595-1 event on 2024 Jan 24, 20:56 UT Visible from Summary ------- On 2024 Jan 24 UT, the 29.1062011364957 km diameter asteroid (4209) Briggs will occult a 9.4 mag star in the constellation Lupus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.16 mag to 17.60 mag (the magnitude of the asteroid) for at most 1.050 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: 95 * date and approx. time of event: 2024 Jan 24, 20:52 - 2024 Jan 24, 20:59 * geocentric midpoint of event [JD]: 2460334.37232050 * magnitude of target star: 9.44 * magnitude drop [mag]: 8.16 * estimated maximum duration [s]: 1.050 * Moon: 99 % sunlit, 122° distance * Sun: 69° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 31 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.001", 109°) * approx speed of asteroid's shadow [km/s]: 29.0180 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7822-00595-1 by 4209 Briggs on 2024 Jan 24 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 93 0 0 33 20 9 20 52 31.4 0 137 -49 33 7 55 33 32 24 32 57 15 33 43 6 .... 94 0 0 32 25 1 20 52 31.4 2 138 -48 32 12 42 32 37 20 32 1 56 32 48 7 0.03 95 0 0 31 28 36 20 52 31.6 3 138 -48 31 16 12 31 41 0 31 5 22 31 51 52 -0.05 96 0 0 30 30 55 20 52 31.9 4 139 -47 30 18 26 30 43 25 30 7 33 30 54 20 -0.08 97 0 0 29 32 0 20 52 32.3 5 139 -46 29 19 26 29 44 34 29 8 28 29 55 34 -0.09 98 0 0 28 31 51 20 52 32.8 7 140 -45 28 19 13 28 44 30 28 8 11 28 55 33 -0.10 99 0 0 27 30 30 20 52 33.5 8 140 -44 27 17 48 27 43 13 27 6 42 27 54 21 -0.11 100 0 0 26 27 59 20 52 34.3 9 141 -43 26 15 13 26 40 46 26 4 3 26 51 57 -0.11 101 0 0 25 24 20 20 52 35.2 11 141 -43 25 11 29 25 37 11 25 0 16 25 48 25 -0.12 102 0 0 24 19 34 20 52 36.3 12 142 -42 24 6 40 24 32 29 23 55 24 24 43 46 -0.12 103 0 0 23 13 45 20 52 37.6 14 142 -41 23 0 48 23 26 43 22 49 29 23 38 4 -0.12 104 0 0 22 6 56 20 52 38.9 15 142 -39 21 53 56 22 19 57 21 42 34 22 31 20 -0.12 105 0 0 20 59 10 20 52 40.5 17 143 -38 20 46 7 21 12 14 20 34 43 21 23 39 -0.12 106 0 0 19 50 30 20 52 42.2 18 143 -37 19 37 25 20 3 37 19 25 59 20 15 4 -0.13 107 0 0 18 41 1 20 52 44.0 20 144 -36 18 27 53 18 54 9 18 16 26 19 5 39 -0.13 108 0 0 17 30 47 20 52 46.1 21 144 -35 17 17 37 17 43 57 17 6 8 17 55 28 -0.13 109 0 0 16 19 51 20 52 48.3 23 144 -34 16 6 40 16 33 2 15 55 10 16 44 34 -0.13 110 0 0 15 8 19 20 52 50.6 24 145 -33 14 55 7 15 21 31 14 43 36 15 33 4 -0.13 111 0 0 13 56 15 20 52 53.1 26 145 -31 13 43 3 14 9 28 13 31 31 14 21 2 -0.13 112 0 0 12 43 45 20 52 55.8 27 145 -30 12 30 32 12 56 59 12 19 0 13 8 33 -0.13 113 0 0 11 30 54 20 52 58.6 29 145 -29 11 17 41 11 44 7 11 6 9 11 55 41 -0.13 114 0 0 10 17 47 20 53 1.6 30 146 -28 10 4 35 10 31 0 9 53 3 10 42 33 -0.13 115 0 0 9 4 29 20 53 4.8 32 146 -26 8 51 18 9 17 41 8 39 47 9 29 14 -0.13 116 0 0 7 51 7 20 53 8.1 33 146 -25 7 37 57 8 4 18 7 26 27 8 15 49 -0.13 117 0 0 6 37 45 20 53 11.5 35 146 -24 6 24 37 6 50 54 6 13 8 7 2 24 -0.14 118 0 0 5 24 30 20 53 15.1 37 147 -22 5 11 23 5 37 37 4 59 56 5 49 5 -0.14 119 0 0 4 11 25 20 53 18.8 38 147 -21 3 58 21 4 24 30 3 46 57 4 35 57 -0.14 120 0 0 2 58 38 20 53 22.6 40 147 -20 2 45 37 3 11 40 2 34 14 3 23 4 -0.14 121 0 0 1 46 13 20 53 26.6 41 147 -18 1 33 15 1 59 13 1 21 55 2 10 34 -0.14 122 0 0 0 34 16 20 53 30.7 43 148 -17 0 21 21 0 47 12 0 10 4 0 58 30 -0.14 123 0 0 - 0 37 10 20 53 34.8 44 148 -15 - 0 50 1 - 0 24 17 - 1 1 15 - 0 13 2 -0.14 124 0 0 - 1 47 58 20 53 39.1 46 148 -14 - 2 0 46 - 1 35 10 - 2 11 56 - 1 23 58 -0.14 125 0 0 - 2 58 5 20 53 43.5 47 148 -13 - 3 10 49 - 2 45 21 - 3 21 55 - 2 34 13 -0.14 126 0 0 - 4 7 27 20 53 47.9 49 148 -11 - 4 20 6 - 3 54 47 - 4 31 9 - 3 43 43 -0.14 127 0 0 - 5 15 59 20 53 52.4 50 149 -10 - 5 28 33 - 5 3 24 - 5 39 32 - 4 52 23 -0.14 128 0 0 - 6 23 37 20 53 57.0 52 149 -9 - 6 36 7 - 6 11 7 - 6 47 1 - 6 0 11 -0.14 129 0 0 - 7 30 19 20 54 1.6 53 149 -7 - 7 42 44 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35 -41 35 26 -41 4 20 -0.15 -158 0 0 -41 18 52 20 58 23.2 51 258 58 -41 27 10 -41 10 34 -41 34 25 -41 3 19 -0.15 -157 0 0 -41 17 14 20 58 25.5 50 257 59 -41 25 32 -41 8 56 -41 32 48 -41 1 40 -0.15 -156 0 0 -41 14 59 20 58 27.8 49 257 60 -41 23 17 -41 6 40 -41 30 33 -40 59 24 -0.15 -155 0 0 -41 12 6 20 58 30.0 48 256 60 -41 20 25 -41 3 47 -41 27 40 -40 56 30 -0.15 -154 0 0 -41 8 35 20 58 32.2 48 256 61 -41 16 55 -41 0 15 -41 24 11 -40 52 59 -0.15 -153 0 0 -41 4 27 20 58 34.4 47 255 61 -41 12 47 -40 56 6 -41 20 4 -40 48 49 -0.15 -152 0 0 -40 59 40 20 58 36.5 46 254 62 -41 8 1 -40 51 19 -41 15 19 -40 44 1 -0.15 -151 0 0 -40 54 16 20 58 38.7 45 254 63 -41 2 37 -40 45 54 -41 9 56 -40 38 35 -0.15 -150 0 0 -40 48 13 20 58 40.8 45 253 63 -40 56 35 -40 39 50 -41 3 54 -40 32 31 -0.15 -149 0 0 -40 41 31 20 58 42.9 44 253 64 -40 49 55 -40 33 8 -40 57 15 -40 25 47 -0.15 -148 0 0 -40 34 11 20 58 45.0 43 252 64 -40 42 36 -40 25 46 -40 49 56 -40 18 25 -0.15 -147 0 0 -40 26 11 20 58 47.0 42 252 65 -40 34 37 -40 17 45 -40 41 59 -40 10 23 -0.15 -146 0 0 -40 17 32 20 58 49.1 42 251 66 -40 25 59 -40 9 5 -40 33 22 -40 1 41 -0.15 -145 0 0 -40 8 13 20 58 51.1 41 251 66 -40 16 42 -39 59 44 -40 24 6 -39 52 20 -0.15 -144 0 0 -39 58 14 20 58 53.1 40 250 67 -40 6 44 -39 49 44 -40 14 9 -39 42 18 -0.15 -143 0 0 -39 47 34 20 58 55.0 39 250 67 -39 56 5 -39 39 2 -40 3 32 -39 31 35 -0.15 -142 0 0 -39 36 13 20 58 57.0 38 249 68 -39 44 46 -39 27 39 -39 52 14 -39 20 10 -0.15 -141 0 0 -39 24 10 20 58 58.9 38 248 68 -39 32 45 -39 15 34 -39 40 15 -39 8 4 -0.15 -140 0 0 -39 11 25 20 59 0.8 37 248 69 -39 20 2 -39 2 48 -39 27 33 -38 55 15 -0.15 -139 0 0 -38 57 57 20 59 2.7 36 247 69 -39 6 36 -38 49 18 -39 14 9 -38 41 44 -0.15 -138 0 0 -38 43 46 20 59 4.6 35 247 70 -38 52 27 -38 35 5 -39 0 2 -38 27 29 -0.15 -137 0 0 -38 28 51 20 59 6.4 34 246 70 -38 37 35 -38 20 8 -38 45 12 -38 12 30 -0.15 -136 0 0 -38 13 12 20 59 8.2 34 246 71 -38 21 58 -38 4 26 -38 29 37 -37 56 47 -0.15 -135 0 0 -37 56 48 20 59 10.0 33 245 71 -38 5 36 -37 48 0 -38 13 17 -37 40 18 -0.15 -134 0 0 -37 39 38 20 59 11.8 32 244 71 -37 48 28 -37 30 47 -37 56 12 -37 23 3 -0.15 -133 0 0 -37 21 42 20 59 13.5 31 244 72 -37 30 35 -37 12 48 -37 38 20 -37 5 2 -0.15 -132 0 0 -37 2 58 20 59 15.2 30 243 72 -37 11 54 -36 54 2 -37 19 42 -36 46 13 -0.15 -131 0 0 -36 43 27 20 59 16.9 29 243 72 -36 52 25 -36 34 28 -37 0 15 -36 26 37 -0.15 -130 0 0 -36 23 6 20 59 18.5 28 242 73 -36 32 8 -36 14 5 -36 40 1 -36 6 11 -0.15 -129 0 0 -36 1 57 20 59 20.1 28 242 73 -36 11 1 -35 52 52 -36 18 57 -35 44 56 -0.15 -128 0 0 -35 39 57 20 59 21.7 27 241 73 -35 49 4 -35 30 49 -35 57 3 -35 22 50 -0.15 -127 0 0 -35 17 6 20 59 23.3 26 241 73 -35 26 16 -35 7 54 -35 34 18 -34 59 53 -0.15 -126 0 0 -34 53 22 20 59 24.8 25 240 73 -35 2 37 -34 44 8 -35 10 41 -34 36 3 -0.15 -125 0 0 -34 28 46 20 59 26.3 24 240 73 -34 38 4 -34 19 29 -34 46 11 -34 11 21 -0.15 -124 0 0 -34 3 17 20 59 27.7 23 239 74 -34 12 38 -33 53 55 -34 20 48 -33 45 44 -0.15 -123 0 0 -33 36 52 20 59 29.2 22 238 73 -33 46 17 -33 27 27 -33 54 30 -33 19 13 -0.15 -122 0 0 -33 9 32 20 59 30.5 21 238 73 -33 19 0 -33 0 3 -33 27 17 -32 51 46 -0.14 -121 0 0 -32 41 15 20 59 31.8 20 237 73 -32 50 47 -32 31 42 -32 59 7 -32 23 22 -0.14 -120 0 0 -32 12 1 20 59 33.1 19 237 73 -32 21 37 -32 2 24 -32 30 1 -31 54 0 -0.14 -119 0 0 -31 41 48 20 59 34.4 18 236 73 -31 51 28 -31 32 7 -31 59 55 -31 23 39 -0.14 -118 0 0 -31 10 35 20 59 35.6 17 236 73 -31 20 20 -31 0 50 -31 28 51 -30 52 19 -0.14 -117 0 0 -30 38 22 20 59 36.7 16 235 72 -30 48 11 -30 28 33 -30 56 46 -30 19 58 -0.14 -116 0 0 -30 5 8 20 59 37.8 15 235 72 -30 15 2 -29 55 15 -30 23 40 -29 46 36 -0.14 -115 0 0 -29 30 52 20 59 38.8 14 234 71 -29 40 49 -29 20 53 -29 49 31 -29 12 11 -0.14 -114 0 0 -28 55 32 20 59 39.8 13 234 71 -29 5 34 -28 45 29 -29 14 20 -28 36 42 -0.14 -113 0 0 -28 19 7 20 59 40.7 12 233 70 -28 29 14 -28 9 0 -28 38 5 -28 0 9 -0.14 -112 0 0 -27 41 38 20 59 41.5 11 233 70 -27 51 50 -27 31 26 -28 0 44 -27 22 31 -0.14 -111 0 0 -27 3 3 20 59 42.3 10 232 69 -27 13 19 -26 52 46 -27 22 18 -26 43 47 -0.14 -110 0 0 -26 23 21 20 59 43.0 9 232 69 -26 33 42 -26 12 59 -26 42 45 -26 3 55 -0.14 -109 0 0 -25 42 31 20 59 43.6 8 232 68 -25 52 58 -25 32 4 -26 2 5 -25 22 56 -0.13 -108 0 0 -25 0 33 20 59 44.2 6 231 67 -25 11 5 -24 50 1 -25 20 16 -24 40 49 -0.13 -107 0 0 -24 17 26 20 59 44.6 5 231 66 -24 28 3 -24 6 49 -24 37 19 -23 57 32 -0.13 -106 0 0 -23 33 10 20 59 45.0 4 230 65 -23 43 51 -23 22 27 -23 53 12 -23 13 6 -0.13 -105 0 0 -22 47 43 20 59 45.3 3 230 65 -22 58 30 -22 36 55 -23 7 55 -22 27 29 -0.12 -104 0 0 -22 1 6 20 59 45.5 2 230 64 -22 11 58 -21 50 13 -22 21 28 -21 40 42 -0.10 -103 0 0 -21 13 18 20 59 45.6 0 229 63 -21 24 15 -21 2 20 -21 33 50 -20 52 44 0.03 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 7822-00595-1 * constellation : Lupus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 14 03.5357 DE: -37 39 49.955 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 14 03.5357 DE: -37 39 49.955 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.4 * B mag [mag]: 10.9 * Diameter [mas]: 0.50 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4209) Briggs asteroid class: approx. diameter [km]: 29 approx. diameter ["]: 0.011 distance from Earth [AU]: 3.50710 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.018", 0.001", 108.879° remarks: * orbital elements for (4209)Briggs : Mean anomaly = 244.6133206697 deg Arg. of pericenter = 13.7635266347 deg Long. of node = 330.1577517863 deg Inclination = 21.6020686231 deg Eccentricity = 0.0812680698 Semimajor axis = 3.1587275519 AU Perihelion dist = 2.9020238608 AU Mag: H = 11.43, G = 0.15 Epoch of elements : MJD 60333.87232042 TDT (2024 Jan 24.8723) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,1.05,2024,1,24,20.935692,0.087902,0.123115,13.353736,-9.483462,-0.005559,0.000828,0.000000,0.000001 151.1796,-37.7514,-131.02,-19.17,False TYC 7822-00595-1,15.23431543,-37.6638762,10.90,9.44,8.65,0.5,4,,15.25975203,-37.7514383,8.16,8.50,0,0,0 4209,Briggs,17.60,30.378,3.5071,0,0,2.824,-23.78,,1.8,0 0,244.4602,2024,1,24,13.7635,330.1578,21.6021,0.08127,3.15873,2.90202,11.42,5.0,0.15 1.437,0.0180,0.0011,109,0.0052,Known errors,1.12,0,-1,-1 20240124_0595-1,60137.03 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org