IOTA/IOTA-ES occultation update for (859) Bouzareah / UCAC4 426-057418 event on 2023 Jul 03, 20:19 UT Visible from Europe Summary ------- On 2023 Jul 03 UT, the 71.2 km diameter asteroid (859) Bouzareah will occult a 9.0 mag star in the constellation Virgo for observers along a path across Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 7.04 mag to 16.00 mag (the magnitude of the asteroid) for at most 5.450 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: 2023 Jul 03, 20:16 - 2023 Jul 03, 20:23 * geocentric midpoint of event [JD]: 2460129.34727321 * magnitude of target star: 8.96 * magnitude drop [mag]: 7.04 * estimated maximum duration [s]: 5.450 * Moon: 100 % sunlit, 93° distance * Sun: 93° distance * rough path description: Europe Additional comments ------------------- double star, RUWE high The occultation path -------------------- * approximate projected width [km]: 198 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 3.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.003", 126°) * approx speed of asteroid's shadow [km/s]: 13.0722 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 426-057418 by 859 Bouzareah on 2023 Jul 3 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 ' " Longitude Longitude Longitude Longitude .. .. .. 70 0 0 .. .. .... .. .. .. 38 24 57 ... .. .. 37 10 5 ... .. .. .... 38 17 21 69 0 0 20 17 12.8 2 249 3 33 32 57 ... .. .. 32 38 15 ... .. .. .... 33 50 24 68 0 0 20 17 15.5 4 245 2 30 8 34 38 26 30 29 23 31 39 41 30 2.04 30 40 37 67 0 0 20 17 18.8 6 242 2 27 32 48 34 18 43 26 53 42 35 13 37 2.27 28 15 4 66 0 0 20 17 22.6 7 240 1 25 29 25 31 20 53 24 54 26 32 6 11 2.37 26 19 26 65 0 0 20 17 26.7 8 239 1 23 49 40 29 3 59 23 17 45 29 43 25 2.42 24 45 53 64 0 0 20 17 31.1 9 237 0 22 28 10 27 15 7 21 58 38 27 50 29 2.45 23 29 31 63 0 0 20 17 35.9 10 236 0 21 21 20 25 47 5 20 53 42 26 19 27 2.47 22 27 1 62 0 0 20 17 40.9 11 236 -1 20 26 33 24 35 23 20 0 30 25 5 25 2.49 21 36 3 61 0 0 20 17 46.2 12 235 -2 19 41 59 23 36 56 19 17 15 24 5 6 2.50 20 54 52 60 0 0 20 17 51.8 13 234 -2 19 6 11 22 49 32 18 42 34 23 16 11 2.51 20 22 6 59 0 0 20 17 57.6 14 234 -3 18 38 1 22 11 35 18 15 21 22 36 57 2.52 19 56 45 58 0 0 20 18 3.7 15 234 -4 18 16 35 21 41 48 17 54 44 22 6 6 2.53 19 37 57 57 0 0 20 18 10.0 15 234 -4 18 1 11 21 19 13 17 40 4 21 42 36 2.54 19 25 3 56 0 0 20 18 16.5 16 234 -5 17 51 14 21 3 4 17 30 44 21 25 41 2.54 19 17 31 55 0 0 20 18 23.3 17 234 -6 17 46 15 20 52 44 17 26 18 21 14 41 2.55 19 14 54 54 0 0 20 18 30.3 17 234 -7 17 45 51 20 47 43 17 26 22 21 9 5 2.55 19 16 51 53 0 0 20 18 37.6 18 235 -8 17 49 43 20 47 36 17 30 39 21 8 29 -2.56 19 23 4 52 0 0 20 18 45.1 18 235 -9 17 57 34 20 52 3 17 38 51 21 12 31 -2.56 19 33 19 51 0 0 20 18 52.8 19 236 -9 18 9 13 21 0 49 17 50 48 21 20 57 -2.57 19 47 25 50 0 0 20 19 0.7 19 236 -10 18 24 29 21 13 42 18 6 19 21 33 33 -2.58 20 5 13 49 0 0 20 19 8.9 20 237 -11 18 43 14 21 30 32 18 25 16 21 50 10 -2.58 20 26 38 48 0 0 20 19 17.3 20 237 -12 19 5 22 21 51 13 18 47 35 22 10 41 -2.59 20 51 36 47 0 0 20 19 25.9 20 238 -13 19 30 51 22 15 40 19 13 11 22 35 1 -2.59 21 20 4 46 0 0 20 19 34.7 21 239 -14 19 59 38 22 43 53 19 42 2 23 3 10 -2.60 21 52 4 45 0 0 20 19 43.8 21 240 -15 20 31 44 23 15 51 20 14 9 23 35 9 -2.61 22 27 37 44 0 0 20 19 53.1 21 240 -16 21 7 10 23 51 38 20 49 34 24 11 0 -2.61 23 6 50 43 0 0 20 20 2.6 21 241 -18 21 46 1 24 31 21 21 28 21 24 50 51 -2.62 23 49 50 42 0 0 20 20 12.3 21 242 -19 22 28 24 25 15 10 22 10 37 25 34 53 -2.63 24 36 49 41 0 0 20 20 22.3 21 243 -20 23 14 28 26 3 18 22 56 31 26 23 18 -2.64 25 28 2 40 0 0 20 20 32.5 21 244 -21 24 4 26 26 56 3 23 46 15 27 16 28 -2.65 26 23 49 39 0 0 20 20 42.9 20 245 -22 24 58 35 27 53 52 24 40 5 28 14 48 -2.66 27 24 36 38 0 0 20 20 53.6 20 246 -24 25 57 17 28 57 16 25 38 21 29 18 52 -2.67 28 31 1 37 0 0 20 21 4.6 20 248 -25 27 1 0 30 7 2 26 41 32 30 29 31 -2.68 29 43 49 36 0 0 20 21 15.8 19 249 -26 28 10 23 31 24 11 27 50 15 31 47 48 -2.69 31 4 4 35 0 0 20 21 27.2 18 250 -28 29 26 13 32 50 8 29 5 14 33 15 17 -2.70 32 33 18 34 0 0 20 21 39.0 17 251 -29 30 49 39 34 27 11 30 27 34 34 54 28 -2.72 34 13 52 33 0 0 20 21 51.2 16 253 -31 32 22 20 36 18 48 31 58 47 36 49 12 -2.74 36 9 33 32 0 0 20 22 3.7 15 254 -32 34 6 47 38 31 25 33 41 12 39 6 56 -2.77 38 27 11 31 0 0 20 22 16.8 13 256 -34 36 7 3 41 19 3 35 38 30 42 4 49 -2.82 Latitude Latitude Latitude Latitude 39 0 0 30 47 24 20 22 19.7 13 256 -34 29 49 13 31 48 34 29 36 33 32 2 44 -2.70 40 0 0 30 25 59 20 22 24.6 12 257 -35 29 28 38 31 26 12 29 16 8 31 40 7 -2.74 41 0 0 30 6 37 20 22 29.1 11 257 -35 29 10 0 31 5 59 28 57 39 31 19 42 -2.74 42 0 0 29 49 14 20 22 33.3 11 258 -36 28 53 16 30 47 51 28 41 3 31 1 23 -2.75 43 0 0 29 33 47 20 22 37.2 10 259 -36 28 38 23 30 31 44 28 26 18 30 45 7 -2.76 44 0 0 29 20 13 20 22 40.7 9 259 -37 28 25 20 30 17 36 28 13 20 30 30 50 -2.77 45 0 0 29 8 31 20 22 43.9 8 260 -37 28 14 3 30 5 24 28 2 9 30 18 31 -2.78 46 0 0 28 58 37 20 22 46.8 7 260 -37 28 4 31 29 55 6 27 52 42 30 8 6 -2.79 47 0 0 28 50 31 20 22 49.3 6 261 -38 27 56 43 29 46 39 27 44 58 29 59 34 -2.81 48 0 0 28 44 11 20 22 51.5 6 261 -38 27 50 38 29 40 1 27 38 55 29 52 53 -2.83 49 0 0 28 39 35 20 22 53.4 5 262 -38 27 46 14 29 35 13 27 34 34 29 48 1 -2.87 50 0 0 28 36 43 20 22 54.9 4 262 -38 27 43 30 29 32 11 27 31 52 29 44 57 -2.92 51 0 0 28 35 34 20 22 56.1 3 263 -38 27 42 26 29 30 56 27 30 49 29 43 41 -3.01 52 0 0 28 36 6 20 22 57.0 2 263 -38 27 43 1 29 31 26 27 31 24 29 44 10 -3.17 53 0 0 28 38 21 20 22 57.6 1 264 -39 27 45 14 29 33 43 27 33 37 29 46 27 -3.58 54 0 0 28 42 18 20 22 57.9 0 264 -38 27 49 7 29 37 45 27 37 29 29 50 31 -6.75 Uncertainty in time = +/- 3 secs Prediction of 2023 May 14.2 Data for the target star ------------------------ * name: UCAC4 426-057418 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 56 15.1265 DE: -04 51 55.462 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 56 15.1261 DE: -04 51 55.459 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 9.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (859) Bouzareah asteroid class: approx. diameter [km]: 71 approx. diameter ["]: 0.030 distance from Earth [AU]: 3.32620 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#99 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", 0.003", 126.012° remarks: * orbital elements for (859)Bouzareah : Mean anomaly = 147.6473063643 deg Arg. of pericenter = 22.0410567148 deg Long. of node = 35.6639670569 deg Inclination = 13.5027891553 deg Eccentricity = 0.1101381505 Semimajor axis = 3.2267912317 AU Perihelion dist = 2.8713984135 AU Mag: H = 9.75, G = 0.15 Epoch of elements : MJD 60128.84715278 TDT (2023 Jul 03.8472) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#992023Apr24,5.45,2023,7,3,20.334557,0.605499,0.709726,5.625321,-4.774447,0.005205,-0.002177,0.000000,0.000000 -32.2512,-4.9919,-123.94,22.93,False UCAC4 426-057418,12.93753517,-4.8654062,0.00,8.96,0.00,0.0,0,,12.95767176,-4.9919273,7.05,0.00,0,0,1 859,Bouzareah,16.00,71.2,3.3262,0,0,0.996,-12.63,,4.0,0 0,147.5033,2023,7,3,22.0411,35.6640,13.5028,0.11014,3.22679,2.87140,9.76,5.0,0.15 1.112,0.0163,0.0031,126,0.0033,Known errors,-1.00,-1,-1,-1 20230703_057418,60078.17 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 14, 03:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org