IOTA/IOTA-ES occultation update for (1140) Crimea / TYC 5605-00993-1 event on 2024 Jan 18, 14:49 UT Visible from Summary ------- On 2024 Jan 18 UT, the 29.477 km diameter asteroid (1140) Crimea will occult a 11.5 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.28 mag to 15.77 mag (the magnitude of the asteroid) for at most 0.980 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 Jan 18, 14:45 - 2024 Jan 18, 14:53 * geocentric midpoint of event [JD]: 2460328.11770333 * magnitude of target star: 11.51 * magnitude drop [mag]: 4.28 * estimated maximum duration [s]: 0.980 * Moon: 56 % sunlit, 156° distance * Sun: 61° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 30 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.001", 114°) * approx speed of asteroid's shadow [km/s]: 29.9349 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5605-00993-1 by 1140 Crimea on 2024 Jan 18 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 174 0 0 24 27 54 14 46 0.5 1 104 -59 24 19 31 24 36 18 24 16 36 24 39 13 .... 175 0 0 24 13 42 14 46 0.6 2 105 -58 24 5 18 24 22 6 24 2 23 24 25 2 -0.08 176 0 0 23 59 15 14 46 0.7 3 105 -58 23 50 50 24 7 39 23 47 55 24 10 35 -0.12 177 0 0 23 44 31 14 46 0.9 4 106 -57 23 36 6 23 52 57 23 33 11 23 55 52 -0.14 178 0 0 23 29 33 14 46 1.1 4 106 -56 23 21 7 23 37 58 23 18 12 23 40 54 -0.15 179 0 0 23 14 19 14 46 1.5 5 106 -55 23 5 53 23 22 45 23 2 57 23 25 41 -0.15 -180 0 0 22 58 50 14 46 1.8 6 107 -54 22 50 23 23 7 16 22 47 27 23 10 13 -0.16 -179 0 0 22 43 6 14 46 2.3 7 107 -53 22 34 38 22 51 33 22 31 42 22 54 29 -0.16 -178 0 0 22 27 7 14 46 2.7 8 108 -52 22 18 39 22 35 35 22 15 43 22 38 31 -0.17 -177 0 0 22 10 53 14 46 3.3 9 108 -51 22 2 25 22 19 22 21 59 29 22 22 19 -0.17 -176 0 0 21 54 26 14 46 3.9 10 108 -50 21 45 57 22 2 55 21 43 1 22 5 52 -0.17 -175 0 0 21 37 44 14 46 4.6 11 109 -49 21 29 15 21 46 14 21 26 18 21 49 11 -0.17 -174 0 0 21 20 49 14 46 5.3 12 109 -48 21 12 19 21 29 19 21 9 22 21 32 16 -0.17 -173 0 0 21 3 40 14 46 6.2 13 110 -47 20 55 10 21 12 10 20 52 13 21 15 8 -0.17 -172 0 0 20 46 18 14 46 7.0 14 110 -46 20 37 47 20 54 48 20 34 50 20 57 46 -0.17 -171 0 0 20 28 42 14 46 8.0 15 110 -45 20 20 11 20 37 14 20 17 14 20 40 11 -0.17 -170 0 0 20 10 54 14 46 9.0 16 111 -44 20 2 23 20 19 26 19 59 25 20 22 24 -0.18 -169 0 0 19 52 54 14 46 10.0 17 111 -43 19 44 22 20 1 26 19 41 24 20 4 24 -0.18 -168 0 0 19 34 41 14 46 11.2 18 111 -42 19 26 8 19 43 14 19 23 10 19 46 12 -0.18 -167 0 0 19 16 16 14 46 12.4 19 112 -41 19 7 43 19 24 49 19 4 45 19 27 48 -0.18 -166 0 0 18 57 40 14 46 13.6 20 112 -40 18 49 7 19 6 14 18 46 8 19 9 12 -0.18 -165 0 0 18 38 53 14 46 15.0 21 112 -39 18 30 19 18 47 27 18 27 20 18 50 25 -0.18 -164 0 0 18 19 54 14 46 16.4 22 113 -38 18 11 20 18 28 29 18 8 22 18 31 28 -0.18 -163 0 0 18 0 46 14 46 17.8 23 113 -37 17 52 11 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257 60 - 3 46 17 - 3 29 37 - 3 49 11 - 3 26 43 -0.20 - 14 0 0 - 3 24 22 14 52 58.8 0 257 59 - 3 32 42 - 3 16 1 - 3 35 36 - 3 13 6 -0.24 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 5605-00993-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 43 57.3956 DE: -12 48 48.119 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 43 57.3958 DE: -12 48 48.119 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.5 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1140) Crimea asteroid class: approx. diameter [km]: 29 approx. diameter ["]: 0.012 distance from Earth [AU]: 3.41270 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.009", 0.001", 113.956° remarks: * orbital elements for (1140)Crimea : Mean anomaly = 200.9304516837 deg Arg. of pericenter = 310.4288217409 deg Long. of node = 72.0622423650 deg Inclination = 14.1167108130 deg Eccentricity = 0.1101126998 Semimajor axis = 2.7736220676 AU Perihelion dist = 2.4682110535 AU Mag: H = 9.80, G = 0.15 Epoch of elements : MJD 60327.61770342 TDT (2024 Jan 18.6177) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,0.98,2024,1,18,14.824880,0.046378,0.182952,16.374281,-4.166727,-0.005069,0.001504,-0.000001,0.000000 -103.5714,-12.8895,-39.80,-20.56,False TYC 5605-00993-1,15.73260986,-12.8133662,11.93,11.51,11.28,0.0,0,,15.75453636,-12.8895053,4.28,4.06,0,0,0 1140,Crimea,15.77,29.477,3.4127,0,0,2.886,-10.74,,1.4,0 0,200.7987,2024,1,18,310.4288,72.0622,14.1167,0.11011,2.77362,2.46821,9.79,5.0,0.15 1.174,0.0090,0.0014,114,0.0021,Known errors,0.89,0,-1,-1 20240118_0993-1,60137.02 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:28 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org