IOTA/IOTA-ES occultation update for (628) Christine / TYC 1942-01025-1 event on 2023 Feb 11, 23:26 UT Visible from Europe, Russia Summary ------- On 2023 Feb 11 UT, the 49.1 km diameter asteroid (628) Christine will occult a 9.7 mag star in the constellation Cancer for observers along a path across Europe, Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.50 mag to 13.18 mag (the magnitude of the asteroid) for at most 4.110 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 Feb 11, 23:18 - 2023 Feb 11, 23:33 * geocentric midpoint of event [JD]: 2459987.47639062 * magnitude of target star: 9.72 * magnitude drop [mag]: 3.50 * estimated maximum duration [s]: 4.110 * Moon: 67 % sunlit, 87° distance * Sun: 162° distance * rough path description: Europe, Russia The occultation path -------------------- * approximate projected width [km]: 64 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.006", 97°) * approx speed of asteroid's shadow [km/s]: 11.9367 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1942-01025-1 by 628 Christine on 2023 Feb 11 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 -141 0 0 .. .. .... .. .. .. .. .. .. 57 50 46 .. .. .. 58 2 0 .. .. .. .... -140 0 0 58 2 49 23 32 46.8 1 40 14 58 30 10 57 35 44 58 41 22 57 24 50 .... -139 0 0 58 41 22 23 32 46.6 1 41 13 59 8 37 58 14 23 59 19 47 58 3 30 -0.75 -138 0 0 59 18 59 23 32 46.2 2 42 13 59 46 9 58 52 6 59 57 16 58 41 16 -0.78 -137 0 0 59 55 40 23 32 45.7 3 42 12 60 22 43 59 28 54 60 33 48 59 18 6 -0.80 -136 0 0 60 31 26 23 32 45.2 4 43 11 60 58 22 60 4 47 61 9 23 59 54 2 -0.81 -135 0 0 61 6 16 23 32 44.5 5 44 10 61 33 4 60 39 44 61 44 2 60 29 3 -0.81 -134 0 0 61 40 11 23 32 43.6 5 45 10 62 6 51 61 13 47 62 17 45 61 3 8 -0.82 -133 0 0 62 13 10 23 32 42.7 6 46 9 62 39 41 61 46 55 62 50 32 61 36 20 -0.82 -132 0 0 62 45 15 23 32 41.8 7 47 8 63 11 37 62 19 9 63 22 24 62 8 37 -0.82 -131 0 0 63 16 25 23 32 40.7 7 48 7 63 42 38 62 50 29 63 53 21 62 40 1 -0.82 -130 0 0 63 46 43 23 32 39.6 8 49 7 64 12 45 63 20 55 64 23 24 63 10 31 -0.83 -129 0 0 64 16 7 23 32 38.4 9 50 6 64 41 59 63 50 30 64 52 34 63 40 10 -0.83 -128 0 0 64 44 40 23 32 37.1 9 50 5 65 10 21 64 19 13 65 20 52 64 8 57 -0.83 -127 0 0 65 12 21 23 32 35.8 10 51 5 65 37 52 64 47 5 65 48 18 64 36 53 -0.83 -126 0 0 65 39 13 23 32 34.5 11 52 4 66 4 33 65 14 7 66 14 54 65 4 0 -0.83 -125 0 0 66 5 15 23 32 33.1 11 53 4 66 30 24 65 40 21 66 40 40 65 30 17 -0.83 -124 0 0 66 30 30 23 32 31.6 12 54 3 66 55 26 66 5 46 67 5 38 65 55 47 -0.83 -123 0 0 66 54 57 23 32 30.2 12 55 2 67 19 42 66 30 24 67 29 49 66 20 30 -0.83 -122 0 0 67 18 38 23 32 28.7 13 56 2 67 43 12 66 54 17 67 53 14 66 44 27 -0.83 -121 0 0 67 41 34 23 32 27.1 13 57 1 68 5 56 67 17 24 68 15 54 67 7 39 -0.84 -120 0 0 68 3 46 23 32 25.6 14 58 1 68 27 57 67 39 48 68 37 49 67 30 8 -0.84 -119 0 0 68 25 16 23 32 24.0 14 59 0 68 49 15 68 1 29 68 59 3 67 51 53 -0.84 -118 0 0 68 46 4 23 32 22.5 15 60 0 69 9 51 68 22 29 69 19 34 68 12 57 -0.84 -117 0 0 69 6 12 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288 -33 24 25 36 23 41 38 24 34 36 23 32 47 -0.85 74 0 0 23 20 15 23 20 4.4 22 289 -32 23 42 9 22 58 31 23 51 5 22 49 44 -0.85 75 0 0 22 37 36 23 19 59.3 21 289 -31 22 59 19 22 16 1 23 8 11 22 7 18 -0.85 76 0 0 21 55 35 23 19 54.4 20 290 -30 22 17 9 21 34 10 22 25 57 21 25 31 -0.85 77 0 0 21 14 14 23 19 49.8 19 290 -29 21 35 38 20 52 59 21 44 22 20 44 23 -0.86 78 0 0 20 33 34 23 19 45.5 17 290 -28 20 54 49 20 12 28 21 3 29 20 3 56 -0.86 79 0 0 19 53 36 23 19 41.5 16 291 -27 20 14 41 19 32 38 20 23 17 19 24 10 -0.86 80 0 0 19 14 20 23 19 37.7 15 291 -27 19 35 16 18 53 32 19 43 48 18 45 7 -0.86 81 0 0 18 35 48 23 19 34.2 14 292 -26 18 56 35 18 15 8 19 5 3 18 6 47 -0.87 82 0 0 17 58 0 23 19 30.9 13 292 -24 18 18 38 17 37 29 18 27 3 17 29 11 -0.87 83 0 0 17 20 57 23 19 27.9 12 292 -23 17 41 27 17 0 34 17 49 48 16 52 20 -0.88 84 0 0 16 44 40 23 19 25.2 11 293 -22 17 5 1 16 24 25 17 13 19 16 16 14 -0.88 85 0 0 16 9 9 23 19 22.7 10 293 -21 16 29 22 15 49 2 16 37 37 15 40 54 -0.89 86 0 0 15 34 24 23 19 20.6 9 293 -20 15 54 30 15 14 26 16 2 41 15 6 21 -0.90 87 0 0 15 0 28 23 19 18.6 8 294 -19 15 20 25 14 40 37 15 28 33 14 32 35 -0.91 88 0 0 14 27 18 23 19 17.0 6 294 -18 14 47 8 14 7 35 14 55 13 13 59 36 -0.92 89 0 0 13 54 58 23 19 15.6 5 294 -17 14 14 40 13 35 22 14 22 42 13 27 26 -0.94 90 0 0 13 23 25 23 19 14.4 4 294 -16 13 43 0 13 3 57 13 51 0 12 56 4 -0.97 91 0 0 12 52 42 23 19 13.6 3 295 -15 13 12 10 12 33 20 13 20 7 12 25 30 -1.02 92 0 0 12 22 49 23 19 12.9 2 295 -14 12 42 10 12 3 33 12 50 3 11 55 46 -1.13 93 0 0 11 53 44 23 19 12.6 1 295 -13 12 12 59 11 34 36 12 20 50 11 26 51 -1.46 94 0 0 .. .. .... .. .. .. .. .. .. 11 44 38 .. .. .. 11 52 26 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2022 Dec 13.0 Data for the target star ------------------------ * name: TYC 1942-01025-1 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 39 13.1805 DE: +24 45 58.417 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 39 13.1803 DE: +24 45 58.419 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 9.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (628) Christine asteroid class: approx. diameter [km]: 49 approx. diameter ["]: 0.039 distance from Earth [AU]: 1.73660 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 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): 0.016", 0.006", 96.511° remarks: * orbital elements for (628)Christine : Mean anomaly = 174.5515885068 deg Arg. of pericenter = 205.1842074933 deg Long. of node = 112.0921299769 deg Inclination = 11.5234965959 deg Eccentricity = 0.0433651657 Semimajor axis = 2.5814256700 AU Perihelion dist = 2.4694817181 AU Mag: H = 9.33, G = 0.15 Epoch of elements : MJD 59986.97638889 TDT (2023 Feb 11.9764) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572022Nov22,4.11,2023,2,11,23.433375,0.300132,0.571576,-5.967558,3.127446,0.001461,-0.001013,0.000001,0.000000 -3.1133,24.6845,-167.95,-13.86,False TYC 1942-01025-1,8.65366125,24.7662271,0.00,9.72,0.00,0.0,0,,8.67668548,24.6845427,3.51,0.00,0,0,0 628,Christine,13.18,49.1,1.7366,0,0,-2.217,15.83,,2.4,0 0,174.3196,2023,2,11,205.1842,112.0921,11.5235,0.04337,2.58143,2.46948,9.34,5.0,0.15 1.203,0.0163,0.0057,97,0.0079,Known errors,-1.00,-1,-1,-1 20230211_1025-1,59926.02 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 13, 00:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org