IOTA/IOTA-ES occultation update for (367) Amicitia / TYC 281-00501-1 event on 2024 Dec 06, 07:21 UT Visible from Summary ------- On 2024 Dec 06 UT, the 18.359 km diameter asteroid (367) Amicitia will occult a 10.6 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.50 mag to 15.08 mag (the magnitude of the asteroid) for at most 0.650 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 Dec 06, 07:18 - 2024 Dec 06, 07:25 * geocentric midpoint of event [JD]: 2460650.80688875 * magnitude of target star: 10.60 * magnitude drop [mag]: 4.50 * estimated maximum duration [s]: 0.650 * Moon: 26 % sunlit, 133° distance * Sun: 72° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 21 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 114°) * approx speed of asteroid's shadow [km/s]: 28.3875 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 281-00501-1 by 367 Amicitia on 2024 Dec 6 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 - 91 0 0 - 8 1 1 7 18 38.6 0 89 -53 - 8 6 42 - 7 55 20 - 8 8 12 - 7 53 50 .... - 90 0 0 - 7 59 59 7 18 38.7 1 88 -53 - 8 5 40 - 7 54 17 - 8 7 10 - 7 52 47 0.34 - 89 0 0 - 7 59 22 7 18 38.8 2 88 -52 - 8 5 3 - 7 53 41 - 8 6 33 - 7 52 11 0.43 - 88 0 0 - 7 59 11 7 18 39.0 3 88 -52 - 8 4 52 - 7 53 29 - 8 6 22 - 7 52 0 0.47 - 87 0 0 - 7 59 25 7 18 39.3 4 88 -51 - 8 5 7 - 7 53 44 - 8 6 37 - 7 52 14 0.49 - 86 0 0 - 8 0 6 7 18 39.7 5 88 -50 - 8 5 47 - 7 54 24 - 8 7 17 - 7 52 54 0.50 - 85 0 0 - 8 1 12 7 18 40.2 6 88 -50 - 8 6 53 - 7 55 30 - 8 8 23 - 7 54 0 0.51 - 84 0 0 - 8 2 43 7 18 40.7 7 88 -49 - 8 8 25 - 7 57 2 - 8 9 55 - 7 55 32 0.52 - 83 0 0 - 8 4 41 7 18 41.3 8 87 -48 - 8 10 23 - 7 58 59 - 8 11 53 - 7 57 29 0.52 - 82 0 0 - 8 7 4 7 18 42.0 9 87 -48 - 8 12 46 - 8 1 22 - 8 14 16 - 7 59 52 0.53 - 81 0 0 - 8 9 53 7 18 42.7 10 87 -47 - 8 15 35 - 8 4 11 - 8 17 5 - 8 2 41 0.53 - 80 0 0 - 8 13 7 7 18 43.6 11 87 -46 - 8 18 50 - 8 7 25 - 8 20 20 - 8 5 55 0.53 - 79 0 0 - 8 16 47 7 18 44.5 12 87 -45 - 8 22 30 - 8 11 5 - 8 24 0 - 8 9 35 0.53 - 78 0 0 - 8 20 53 7 18 45.4 13 87 -45 - 8 26 36 - 8 15 11 - 8 28 6 - 8 13 41 0.53 - 77 0 0 - 8 25 25 7 18 46.5 14 86 -44 - 8 31 7 - 8 19 42 - 8 32 38 - 8 18 12 0.54 - 76 0 0 - 8 30 22 7 18 47.6 15 86 -43 - 8 36 5 - 8 24 39 - 8 37 35 - 8 23 9 0.54 - 75 0 0 - 8 35 45 7 18 48.9 16 86 -42 - 8 41 28 - 8 30 2 - 8 42 58 - 8 28 31 0.54 - 74 0 0 - 8 41 33 7 18 50.1 17 86 -42 - 8 47 16 - 8 35 49 - 8 48 47 - 8 34 19 0.54 - 73 0 0 - 8 47 46 7 18 51.5 18 86 -41 - 8 53 30 - 8 42 3 - 8 55 1 - 8 40 32 0.54 - 72 0 0 - 8 54 25 7 18 52.9 19 85 -40 - 9 0 9 - 8 48 41 - 9 1 40 - 8 47 11 0.54 - 71 0 0 - 9 1 30 7 18 54.4 20 85 -39 - 9 7 14 - 8 55 46 - 9 8 45 - 8 54 15 0.54 - 70 0 0 - 9 8 59 7 18 56.0 21 85 -38 - 9 14 44 - 9 3 15 - 9 16 15 - 9 1 44 0.54 - 69 0 0 - 9 16 54 7 18 57.7 22 85 -37 - 9 22 39 - 9 11 9 - 9 24 10 - 9 9 39 0.54 - 68 0 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34 37 -37 48 36 -37 33 0 0.55 19 0 0 -38 1 10 7 23 47.4 46 328 46 -38 7 20 -37 55 0 -38 8 57 -37 53 23 0.55 20 0 0 -38 21 18 7 23 50.2 45 327 47 -38 27 27 -38 15 8 -38 29 5 -38 13 31 0.55 21 0 0 -38 41 11 7 23 52.9 44 325 48 -38 47 20 -38 35 2 -38 48 57 -38 33 25 0.55 22 0 0 -39 0 49 7 23 55.5 44 324 49 -39 6 58 -38 54 41 -39 8 35 -38 53 4 0.55 23 0 0 -39 20 13 7 23 58.1 43 323 49 -39 26 21 -39 14 5 -39 27 58 -39 12 28 0.55 24 0 0 -39 39 21 7 24 0.7 42 322 50 -39 45 28 -39 33 13 -39 47 5 -39 31 37 0.55 25 0 0 -39 58 13 7 24 3.2 42 321 51 -40 4 20 -39 52 6 -40 5 57 -39 50 30 0.55 26 0 0 -40 16 49 7 24 5.7 41 320 51 -40 22 56 -40 10 43 -40 24 33 -40 9 7 0.55 27 0 0 -40 35 10 7 24 8.1 40 319 52 -40 41 16 -40 29 4 -40 42 53 -40 27 28 0.55 28 0 0 -40 53 14 7 24 10.4 39 318 53 -40 59 20 -40 47 9 -41 0 56 -40 45 33 0.55 29 0 0 -41 11 2 7 24 12.7 39 317 53 -41 17 7 -41 4 57 -41 18 43 -41 3 21 0.55 30 0 0 -41 28 33 7 24 15.0 38 316 54 -41 34 37 -41 22 29 -41 36 13 -41 20 53 0.55 31 0 0 -41 45 47 7 24 17.2 37 315 55 -41 51 51 -41 39 43 -41 53 27 -41 38 8 0.55 32 0 0 -42 2 44 7 24 19.4 36 314 55 -42 8 48 -41 56 41 -42 10 24 -41 55 6 0.55 33 0 0 -42 19 25 7 24 21.5 36 314 56 -42 25 27 -42 13 22 -42 27 3 -42 11 47 0.55 34 0 0 -42 35 48 7 24 23.5 35 313 56 -42 41 50 -42 29 46 -42 43 25 -42 28 10 0.55 35 0 0 -42 51 53 7 24 25.5 34 312 57 -42 57 55 -42 45 52 -42 59 30 -42 44 17 0.55 36 0 0 -43 7 42 7 24 27.5 34 311 57 -43 13 43 -43 1 41 -43 15 18 -43 0 6 0.55 37 0 0 -43 23 12 7 24 29.4 33 310 58 -43 29 13 -43 17 12 -43 30 48 -43 15 37 0.55 38 0 0 -43 38 26 7 24 31.2 32 309 58 -43 44 25 -43 32 26 -43 46 0 -43 30 51 0.55 39 0 0 -43 53 21 7 24 33.1 31 308 59 -43 59 20 -43 47 22 -44 0 55 -43 45 48 0.55 40 0 0 -44 7 59 7 24 34.8 31 307 59 -44 13 58 -44 2 1 -44 15 32 -44 0 26 0.55 41 0 0 -44 22 19 7 24 36.5 30 307 60 -44 28 17 -44 16 22 -44 29 52 -44 14 47 0.55 42 0 0 -44 36 22 7 24 38.2 29 306 60 -44 42 19 -44 30 24 -44 43 53 -44 28 50 0.55 43 0 0 -44 50 6 7 24 39.8 28 305 60 -44 56 3 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0 0 -47 21 38 7 24 56.9 19 295 64 -47 27 28 -47 15 49 -47 29 0 -47 14 17 0.56 57 0 0 -47 31 13 7 24 57.9 19 294 64 -47 37 2 -47 25 24 -47 38 34 -47 23 53 0.56 58 0 0 -47 40 30 7 24 58.9 18 293 64 -47 46 19 -47 34 42 -47 47 51 -47 33 10 0.56 59 0 0 -47 49 30 7 24 59.8 17 292 64 -47 55 18 -47 43 42 -47 56 49 -47 42 10 0.56 60 0 0 -47 58 11 7 25 0.7 17 291 64 -48 3 59 -47 52 24 -48 5 31 -47 50 53 0.56 61 0 0 -48 6 36 7 25 1.6 16 291 64 -48 12 23 -48 0 49 -48 13 54 -47 59 18 0.56 62 0 0 -48 14 42 7 25 2.4 15 290 64 -48 20 29 -48 8 56 -48 22 0 -48 7 25 0.56 63 0 0 -48 22 32 7 25 3.2 15 289 64 -48 28 18 -48 16 46 -48 29 49 -48 15 15 0.56 64 0 0 -48 30 4 7 25 4.0 14 288 64 -48 35 49 -48 24 18 -48 37 21 -48 22 47 0.56 65 0 0 -48 37 18 7 25 4.7 13 288 64 -48 43 4 -48 31 33 -48 44 35 -48 30 2 0.56 66 0 0 -48 44 15 7 25 5.3 13 287 64 -48 50 0 -48 38 30 -48 51 31 -48 37 0 0.56 67 0 0 -48 50 55 7 25 6.0 12 286 64 -48 56 40 -48 45 11 -48 58 11 -48 43 40 0.56 68 0 0 -48 57 18 7 25 6.6 11 285 64 -49 3 2 -48 51 34 -49 4 33 -48 50 3 0.56 69 0 0 -49 3 23 7 25 7.1 11 284 63 -49 9 7 -48 57 40 -49 10 38 -48 56 9 0.56 70 0 0 -49 9 12 7 25 7.7 10 284 63 -49 14 55 -49 3 28 -49 16 26 -49 1 58 0.56 71 0 0 -49 14 43 7 25 8.2 9 283 63 -49 20 26 -49 9 0 -49 21 57 -49 7 30 0.57 72 0 0 -49 19 57 7 25 8.6 9 282 63 -49 25 40 -49 14 15 -49 27 11 -49 12 44 0.57 73 0 0 -49 24 54 7 25 9.1 8 281 63 -49 30 37 -49 19 12 -49 32 7 -49 17 42 0.57 74 0 0 -49 29 35 7 25 9.4 7 281 62 -49 35 17 -49 23 53 -49 36 47 -49 22 23 0.57 75 0 0 -49 33 58 7 25 9.8 7 280 62 -49 39 40 -49 28 16 -49 41 10 -49 26 46 0.57 76 0 0 -49 38 4 7 25 10.1 6 279 62 -49 43 46 -49 32 23 -49 45 16 -49 30 53 0.58 77 0 0 -49 41 54 7 25 10.4 5 278 62 -49 47 36 -49 36 13 -49 49 6 -49 34 43 0.58 78 0 0 -49 45 27 7 25 10.7 5 278 61 -49 51 8 -49 39 46 -49 52 38 -49 38 16 0.58 79 0 0 -49 48 43 7 25 10.9 4 277 61 -49 54 24 -49 43 2 -49 55 54 -49 41 32 0.59 80 0 0 -49 51 42 7 25 11.1 3 276 61 -49 57 23 -49 46 1 -49 58 53 -49 44 32 0.60 81 0 0 -49 54 25 7 25 11.2 3 275 60 -50 0 6 -49 48 44 -50 1 36 -49 47 14 0.61 82 0 0 -49 56 51 7 25 11.3 2 275 60 -50 2 31 -49 51 10 -50 4 1 -49 49 40 0.63 83 0 0 -49 59 0 7 25 11.4 1 274 60 -50 4 40 -49 53 19 -50 6 10 -49 51 50 0.66 84 0 0 -50 0 52 7 25 11.5 1 273 59 -50 6 33 -49 55 12 -50 8 3 -49 53 43 0.76 85 0 0 -50 2 28 7 25 11.5 0 272 59 -50 8 9 -49 56 48 -50 9 39 -49 55 19 1.71 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 281-00501-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 13 26.5895 DE: +01 28 22.804 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 13 26.5897 DE: +01 28 22.802 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.300) * V mag [mag]: 10.6 * B mag [mag]: 10.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (367) Amicitia asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.012 distance from Earth [AU]: 2.09120 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#98 date of fit: 2023 Feb 11 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): 0.012", 0.001", 113.696° remarks: * orbital elements for (367)Amicitia : Mean anomaly = 13.2070369449 deg Arg. of pericenter = 55.3641303599 deg Long. of node = 83.4209824563 deg Inclination = 2.9417755420 deg Eccentricity = 0.0951121355 Semimajor axis = 2.2192017968 AU Perihelion dist = 2.0081287749 AU Mag: H = 10.72, G = 0.15 Epoch of elements : MJD 60650.30688888 TDT (2024 Dec 06.3069) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#982023Feb11,0.65,2024,12,6,7.365330,-0.172967,-0.451151,14.966427,-5.721274,-0.004769,0.002154,-0.000001,0.000000 -2.3768,1.3349,67.31,-22.56,False TYC 281-00501-1,12.22405260,1.4730014,10.90,10.60,10.44,0.0,0,,12.24519959,1.3349369,4.49,4.21,0,0,0 367,Amicitia,15.08,18.359,2.0912,0,0,4.198,-24.06,,1.0,0 0,13.1155,2024,12,6,55.3641,83.4210,2.9418,0.09511,2.21920,2.00813,10.72,5.0,0.15 1.132,0.0120,0.0015,114,0.0016,Known errors,2.06,0,-1,-1 20241206_0501-1,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org