IOTA/IOTA-ES occultation update for (1116) Catriona / UCAC4-703-045104 event on 2022 Dec 09, 04:17 UT Visible from Europe Summary ------- On 2022 Dec 09 UT, the 38.3 km diameter asteroid (1116) Catriona will occult a 12.4 mag star in the constellation Lynx 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 1.22 mag to 13.22 mag (the magnitude of the asteroid) for at most 5.300 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: 2022 Dec 09, 04:03 - 2022 Dec 09, 04:31 * geocentric midpoint of event [JD]: 2459922.67867696 * magnitude of target star: 12.43 * magnitude drop [mag]: 1.22 * estimated maximum duration [s]: 5.300 * Moon: 99 % sunlit, 27° distance * Sun: 144° distance * rough path description: Europe Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 42 * 1 sigma uncertainty interval [path widths]: +/- 0.40 * 1 sigma uncertainty interval [seconds]: +/- 5.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.040, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.041", 0.005", 101°) * approx speed of asteroid's shadow [km/s]: 7.2250 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-703-045104 by 1116 Catriona on 2022 Dec 9 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 .. .. .. - 6 0 0 .. .. .... .. .. .. ... .. .. 48 31 9 ... .. .. 48 19 37 .... 47 56 57 - 5 0 0 4 3 45.2 1 321 21 48 11 8 47 42 48 48 22 37 47 31 23 .... 47 9 29 - 4 0 0 4 3 45.9 2 321 20 47 23 32 46 55 27 47 34 55 46 44 8 -0.35 46 22 56 - 3 0 0 4 3 47.0 4 321 19 46 36 53 46 9 2 46 48 11 45 57 48 -0.36 45 37 17 - 2 0 0 4 3 48.6 5 321 18 45 51 7 45 23 29 46 2 20 45 12 20 -0.36 44 52 27 - 1 0 0 4 3 50.6 6 321 17 45 6 11 44 38 44 45 17 20 44 27 40 -0.36 44 8 23 0 0 0 4 3 53.1 7 321 16 44 22 3 43 54 46 44 33 7 43 43 45 -0.36 43 25 3 1 0 0 4 3 55.9 9 321 15 43 38 38 43 11 30 43 49 38 43 0 33 -0.36 Latitude Latitude Latitude Latitude 43 0 0 1 35 7 4 3 57.8 9 321 14 1 54 12 1 16 6 2 9 41 1 0 46 -0.37 42 0 0 3 0 31 4 4 2.9 11 321 13 3 19 53 2 41 13 3 35 36 2 25 39 -0.36 41 0 0 4 27 40 4 4 9.0 13 321 11 4 47 20 4 8 6 5 3 17 3 52 18 -0.36 40 0 0 5 56 32 4 4 16.0 15 321 10 6 16 29 5 36 40 6 32 40 5 20 39 -0.36 39 0 0 7 27 2 4 4 23.9 16 320 8 7 47 16 7 6 52 8 3 42 6 50 37 -0.36 38 0 0 8 59 4 4 4 32.9 18 320 7 9 19 35 8 38 37 9 36 16 8 22 8 -0.36 37 0 0 10 32 33 4 4 42.8 20 320 5 10 53 22 10 11 49 11 10 17 9 55 6 -0.36 36 0 0 12 7 23 4 4 53.7 22 320 4 12 28 31 11 46 22 12 45 40 11 29 25 -0.37 35 0 0 13 43 28 4 5 5.6 24 319 2 14 4 53 13 22 9 14 22 17 13 4 58 -0.37 34 0 0 15 20 40 4 5 18.4 25 319 1 15 42 22 14 59 3 16 0 1 14 41 38 -0.37 33 0 0 16 58 50 4 5 32.3 27 319 -1 17 20 51 16 36 56 17 38 44 16 19 18 -0.37 32 0 0 18 37 52 4 5 47.0 29 318 -2 19 0 10 18 15 41 19 18 18 17 57 48 -0.37 31 0 0 20 17 35 4 6 2.7 31 317 -4 20 40 11 19 55 7 20 58 33 19 37 1 -0.37 30 0 0 21 57 51 4 6 19.3 33 317 -5 22 20 44 21 35 6 22 39 20 21 16 47 -0.37 29 0 0 23 38 30 4 6 36.7 34 316 -7 24 1 39 23 15 28 24 20 29 22 56 56 -0.38 28 0 0 25 19 21 4 6 54.8 36 315 -8 25 42 47 24 56 3 26 1 51 24 37 18 -0.38 27 0 0 27 0 15 4 7 13.7 38 314 -9 27 23 57 26 36 41 27 43 14 26 17 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33 54 19 15 -0.41 -165 0 0 53 51 28 4 29 24.5 24 35 -15 54 17 50 53 25 19 54 39 20 53 4 18 -0.41 -166 0 0 52 33 53 4 29 33.9 23 34 -14 53 0 25 52 7 33 53 22 3 51 46 24 -0.41 -167 0 0 51 13 16 4 29 43.2 21 33 -13 51 39 58 50 46 48 52 1 44 50 25 31 -0.41 -168 0 0 49 49 41 4 29 52.1 20 33 -12 50 16 30 49 23 5 50 38 21 49 1 43 -0.41 -169 0 0 48 23 10 4 30 0.8 18 32 -11 48 50 4 47 56 29 49 11 59 47 35 2 -0.41 -170 0 0 46 53 46 4 30 8.9 16 31 -10 47 20 44 46 27 2 47 42 42 46 5 32 -0.42 -171 0 0 45 21 36 4 30 16.6 15 30 -8 45 48 35 44 54 50 46 10 34 44 33 19 -0.42 -172 0 0 43 46 45 4 30 23.6 13 30 -7 44 13 44 43 19 59 44 35 43 42 58 28 -0.42 -173 0 0 42 9 23 4 30 30.0 11 29 -6 42 36 19 41 42 39 42 58 16 41 21 9 -0.43 -174 0 0 40 29 37 4 30 35.6 10 28 -4 40 56 30 40 2 57 41 18 23 39 41 31 -0.43 -175 0 0 38 47 40 4 30 40.3 8 28 -3 39 14 26 38 21 5 39 36 15 37 59 43 -0.45 -176 0 0 37 3 42 4 30 44.2 6 27 -1 37 30 21 36 37 15 37 52 3 36 15 59 -0.47 -177 0 0 35 17 57 4 30 47.0 4 26 0 35 44 26 34 51 39 36 6 1 34 30 30 -0.52 -178 0 0 33 30 39 4 30 48.7 2 26 2 33 56 57 33 4 31 34 18 22 32 43 30 -0.66 -179 0 0 .. .. .... .. .. .. .. .. .. 32 8 7 .. .. .. 32 29 22 .. .. .. .... Uncertainty in time = +/- 6 secs Prediction of 2022 Dec 1.1 Data for the target star ------------------------ * name: UCAC4-703-045104 * constellation : Lynx * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 57 05.7891 DE: +50 25 49.795 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 57 05.7893 DE: +50 25 49.796 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1116) Catriona asteroid class: approx. diameter [km]: 38 approx. diameter ["]: 0.038 distance from Earth [AU]: 1.40280 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2022 Nov 22 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): 0.041", 0.005", 101.272° remarks: * orbital elements for (1116)Catriona : Mean anomaly = 6.3452293808 deg Arg. of pericenter = 83.2436053527 deg Long. of node = 356.2126915738 deg Inclination = 16.5518930394 deg Eccentricity = 0.2239859073 Semimajor axis = 2.9261862500 AU Perihelion dist = 2.2707617678 AU Mag: H = 9.85, G = 0.15 Epoch of elements : MJD 59922.17854167 TDT (2022 Dec 09.1785) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502022Nov22,5.30,2022,12,9,4.288247,0.208771,0.330437,-3.447333,2.178556,-0.002525,-0.002131,0.000001,0.000000 -37.4966,50.3989,113.72,-22.81,False UCAC4-703-045104,6.95160808,50.4304986,0.00,12.43,0.00,0.0,0,,6.98143992,50.3989108,1.22,0.00,0,0,0 1116,Catriona,13.22,38.3,1.4028,0,0,-2.260,13.65,,1.8,0 0,6.3101,2022,12,9,83.2436,356.2127,16.5519,0.22399,2.92619,2.27076,9.88,5.0,0.15 1.405,0.0407,0.0047,101,0.0152,Known errors,-1.00,-1,-1,-1 20221209_045104,59914.08 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 01, 01:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org