IOTA/IOTA-ES occultation update for (490) Veritas / UCAC4 454-050214 event on 2024 Mar 02, 19:58 UT Visible from Summary ------- On 2024 Mar 02 UT, the 112.468 km diameter asteroid (490) Veritas will occult a 11.5 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.19 mag to 13.55 mag (the magnitude of the asteroid) for at most 7.840 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 Mar 02, 19:54 - 2024 Mar 02, 20:02 * geocentric midpoint of event [JD]: 2460372.33233841 * magnitude of target star: 11.52 * magnitude drop [mag]: 2.19 * estimated maximum duration [s]: 7.840 * Moon: 58 % sunlit, 69° distance * Sun: 168° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 226 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 3.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.019) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.018", 104°) * approx speed of asteroid's shadow [km/s]: 14.3401 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 454-050214 by 490 Veritas on 2024 Mar 2 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 .. .. .. -88 0 0 .. .. .... .. .. .. ... .. .. ... .. .. 26 9 34 ... .. .. .... .. .. .. -87 0 0 .. .. .... .. .. .. 29 50 13 ... .. .. 43 43 28 ... .. .. .... 22 55 4 -86 0 0 19 54 56.4 2 52 4 41 30 8 ... .. .. 50 48 37 ... .. .. .... 34 15 36 -85 0 0 19 54 57.3 3 41 2 47 23 21 17 33 47 54 31 29 1 31 17 -1.43 40 28 17 -84 0 0 19 54 58.5 4 35 1 50 50 30 28 32 32 56 40 7 19 52 9 -1.55 44 21 29 -83 0 0 19 55 0.0 5 31 0 53 0 5 34 49 51 57 56 36 28 22 54 -1.61 46 56 24 -82 0 0 19 55 1.7 7 28 -1 54 23 0 38 55 23 58 41 0 33 40 21 -1.64 48 42 10 -81 0 0 19 55 3.7 8 26 -2 55 15 28 41 44 32 59 4 13 37 16 5 -1.66 49 54 45 -80 0 0 19 55 6.0 9 25 -3 55 46 52 43 44 22 59 12 38 39 49 5 -1.68 50 43 46 -79 0 0 19 55 8.5 9 24 -4 56 3 3 45 10 8 59 10 16 41 39 53 -1.69 51 15 22 -78 0 0 19 55 11.2 10 24 -5 56 7 51 46 11 13 58 59 46 43 0 38 -1.70 51 33 40 -77 0 0 19 55 14.2 11 24 -6 56 3 52 46 53 43 58 42 58 43 59 2 -1.71 51 41 33 -76 0 0 19 55 17.4 12 24 -7 55 52 55 47 21 49 58 21 10 44 40 17 -1.71 51 41 4 -75 0 0 19 55 20.9 13 24 -8 55 36 20 47 38 30 57 55 14 45 8 1 1.72 51 33 45 -74 0 0 19 55 24.7 14 24 -9 55 15 7 47 45 56 57 25 55 45 24 52 1.72 51 20 47 -73 0 0 19 55 28.6 15 24 -10 54 50 1 47 45 44 56 53 44 45 32 47 1.73 51 3 1 -72 0 0 19 55 32.9 16 25 -11 54 21 35 47 39 9 56 19 5 45 33 16 1.73 50 41 9 -71 0 0 19 55 37.3 17 25 -12 53 50 18 47 27 7 55 42 16 45 27 25 1.74 50 15 41 -70 0 0 19 55 42.0 18 26 -13 53 16 29 47 10 23 55 3 32 45 16 10 1.74 49 47 6 -69 0 0 19 55 47.0 18 26 -14 52 40 25 46 49 33 54 23 4 45 0 12 1.74 49 15 42 -68 0 0 19 55 52.1 19 27 -15 52 2 19 46 25 6 53 41 1 44 40 5 1.75 48 41 47 -67 0 0 19 55 57.6 20 28 -15 51 22 21 45 57 25 52 57 30 44 16 16 1.75 48 5 35 -66 0 0 19 56 3.2 21 29 -16 50 40 42 45 26 49 52 12 37 43 49 10 1.75 47 27 14 -65 0 0 19 56 9.1 22 29 -17 49 57 26 44 53 33 51 26 27 43 19 1 1.75 46 46 56 -64 0 0 19 56 15.2 22 30 -18 49 12 40 44 17 49 50 39 2 42 46 7 1.75 46 4 46 -63 0 0 19 56 21.5 23 31 -19 48 26 28 43 39 48 49 50 25 42 10 39 1.75 45 20 50 -62 0 0 19 56 28.1 24 32 -20 47 38 52 42 59 37 49 0 39 41 32 47 1.76 44 35 13 -61 0 0 19 56 34.9 24 33 -21 46 49 55 42 17 23 48 9 43 40 52 38 1.76 43 47 58 -60 0 0 19 56 41.9 25 34 -21 45 59 39 41 33 11 47 17 39 40 10 19 1.76 42 59 7 -59 0 0 19 56 49.2 26 35 -22 45 8 4 40 47 6 46 24 27 39 25 55 1.76 42 8 41 -58 0 0 19 56 56.6 26 36 -23 44 15 11 39 59 9 45 30 5 38 39 29 1.76 41 16 42 -57 0 0 19 57 4.3 27 38 -24 43 20 59 39 9 24 44 34 33 37 51 4 1.76 40 23 9 -56 0 0 19 57 12.2 27 39 -24 42 25 27 38 17 49 43 37 50 37 0 41 1.76 39 28 2 -55 0 0 19 57 20.3 28 40 -25 41 28 35 37 24 27 42 39 53 36 8 21 1.76 38 31 19 -54 0 0 19 57 28.6 28 41 -26 40 30 20 36 29 15 41 40 42 35 14 4 1.76 37 32 58 -53 0 0 19 57 37.1 28 43 -26 39 30 39 35 32 13 40 40 11 34 17 48 1.76 36 32 58 -52 0 0 19 57 45.9 29 44 -27 38 29 30 34 33 18 39 38 20 33 19 31 1.76 35 31 14 -51 0 0 19 57 54.8 29 46 -27 37 26 49 33 32 27 38 35 3 32 19 9 1.76 34 27 42 -50 0 0 19 58 3.9 29 47 -28 36 22 32 32 29 36 37 30 18 31 16 40 1.76 33 22 19 -49 0 0 19 58 13.3 29 48 -28 35 16 36 31 24 39 36 23 59 30 11 57 1.76 32 14 57 -48 0 0 19 58 22.8 30 50 -29 34 8 53 30 17 32 35 16 1 29 4 54 1.76 31 5 31 -47 0 0 19 58 32.5 30 52 -29 32 59 19 29 8 5 34 6 18 27 55 23 1.76 29 53 51 -46 0 0 19 58 42.4 30 53 -29 31 47 44 27 56 12 32 54 42 26 43 16 1.76 28 39 51 -45 0 0 19 58 52.5 29 55 -30 30 34 2 26 41 42 31 41 6 25 28 22 1.76 27 23 18 -44 0 0 19 59 2.8 29 56 -30 29 18 2 25 24 23 30 25 21 24 10 26 1.76 26 4 0 -43 0 0 19 59 13.2 29 58 -30 27 59 34 24 3 59 29 7 17 22 49 14 1.76 24 41 43 -42 0 0 19 59 23.9 29 60 -30 26 38 25 22 40 14 27 46 41 21 24 25 1.76 23 16 7 -41 0 0 19 59 34.7 28 61 -30 25 14 18 21 12 47 26 23 19 19 55 37 1.76 21 46 53 -40 0 0 19 59 45.7 28 63 -30 23 46 56 19 41 13 24 56 54 18 22 20 1.77 20 13 35 -39 0 0 19 59 56.9 27 65 -30 22 15 58 18 4 59 23 27 7 16 43 59 1.77 18 35 39 -38 0 0 20 0 8.2 27 66 -29 20 40 57 16 23 26 21 53 34 14 59 48 1.77 16 52 28 -37 0 0 20 0 19.7 26 68 -29 19 1 20 14 35 43 20 15 46 13 8 45 1.77 15 3 8 -36 0 0 20 0 31.4 25 70 -28 17 16 28 12 40 42 18 33 9 11 9 29 1.78 13 6 33 -35 0 0 20 0 43.2 24 71 -27 15 25 28 10 36 51 16 44 55 9 0 6 1.79 11 1 11 -34 0 0 20 0 55.2 22 73 -26 13 27 13 8 21 58 14 50 9 6 37 45 1.79 Latitude Latitude Latitude Latitude 11 0 0 -33 59 27 20 0 55.3 22 73 -26 -32 50 55 -35 10 51 -32 10 51 -35 55 25 1.75 10 0 0 -33 32 24 20 1 0.8 22 74 -26 -32 24 31 -34 43 3 -31 44 49 -35 27 7 1.77 9 0 0 -33 6 24 20 1 6.1 21 75 -25 -31 59 9 -34 16 21 -31 19 47 -34 59 57 1.77 8 0 0 -32 41 27 20 1 11.2 20 76 -25 -31 34 47 -33 50 45 -30 55 45 -34 33 54 1.77 7 0 0 -32 17 33 20 1 16.1 20 76 -24 -31 11 26 -33 26 13 -30 32 42 -34 8 58 1.78 6 0 0 -31 54 41 20 1 20.9 19 77 -24 -30 49 5 -33 2 46 -30 10 38 -33 45 8 1.78 5 0 0 -31 32 51 20 1 25.4 18 78 -23 -30 27 44 -32 40 23 -29 49 34 -33 22 23 1.78 4 0 0 -31 12 3 20 1 29.8 17 78 -22 -30 7 23 -32 19 4 -29 29 28 -33 0 43 1.78 3 0 0 -30 52 16 20 1 33.9 17 79 -22 -29 48 2 -31 58 49 -29 10 21 -32 40 9 1.79 2 0 0 -30 33 30 20 1 37.9 16 80 -21 -29 29 41 -31 39 36 -28 52 14 -32 20 39 1.79 1 0 0 -30 15 46 20 1 41.7 15 80 -20 -29 12 19 -31 21 27 -28 35 4 -32 2 13 1.79 - 0 0 0 -29 59 3 20 1 45.2 14 81 -20 -28 55 57 -31 4 21 -28 18 53 -31 44 51 1.80 - 1 0 0 -29 43 20 20 1 48.6 13 81 -19 -28 40 33 -30 48 17 -28 3 41 -31 28 33 1.80 - 2 0 0 -29 28 38 20 1 51.8 13 82 -18 -28 26 9 -30 33 15 -27 49 27 -31 13 18 1.80 - 3 0 0 -29 14 57 20 1 54.7 12 83 -18 -28 12 44 -30 19 15 -27 36 11 -30 59 7 1.81 - 4 0 0 -29 2 16 20 1 57.5 11 83 -17 -28 0 18 -30 6 18 -27 23 53 -30 45 59 1.82 - 5 0 0 -28 50 35 20 2 0.1 10 84 -16 -27 48 51 -29 54 23 -27 12 34 -30 33 54 1.82 - 6 0 0 -28 39 55 20 2 2.4 9 84 -15 -27 38 23 -29 43 29 -27 2 12 -30 22 51 1.83 - 7 0 0 -28 30 15 20 2 4.6 8 85 -14 -27 28 54 -29 33 37 -26 52 49 -30 12 51 1.84 - 8 0 0 -28 21 35 20 2 6.5 8 85 -14 -27 20 24 -29 24 47 -26 44 24 -30 3 54 1.85 - 9 0 0 -28 13 56 20 2 8.3 7 86 -13 -27 12 52 -29 16 58 -26 36 57 -29 56 0 1.87 - 10 0 0 -28 7 16 20 2 9.8 6 86 -12 -27 6 20 -29 10 11 -26 30 29 -29 49 8 1.88 - 11 0 0 -28 1 37 20 2 11.1 5 87 -11 -27 0 46 -29 4 26 -26 24 58 -29 43 19 1.91 - 12 0 0 -27 56 59 20 2 12.2 4 87 -10 -26 56 11 -28 59 43 -26 20 26 -29 38 33 1.94 - 13 0 0 -27 53 20 20 2 13.1 3 88 -10 -26 52 36 -28 56 1 -26 16 52 -29 34 49 1.99 - 14 0 0 -27 50 43 20 2 13.8 2 88 -9 -26 50 0 -28 53 22 -26 14 17 -29 32 8 2.08 - 15 0 0 -27 49 5 20 2 14.3 2 89 -8 -26 48 23 -28 51 44 -26 12 40 -29 30 30 2.27 - 16 0 0 -27 48 29 20 2 14.5 1 89 -7 -26 47 46 -28 51 8 -26 12 2 -29 29 55 3.01 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 454-050214 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 11 37 22.0630 DE: +00 42 46.339 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 11 37 22.0631 DE: +00 42 46.339 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.5 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (490) Veritas asteroid class: approx. diameter [km]: 112 approx. diameter ["]: 0.063 distance from Earth [AU]: 2.45960 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#58 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): 0.024", 0.018", 104.4° remarks: * orbital elements for (490)Veritas : Mean anomaly = 155.4298689664 deg Arg. of pericenter = 193.6338048920 deg Long. of node = 178.0406967437 deg Inclination = 9.2930641696 deg Eccentricity = 0.0891441710 Semimajor axis = 3.1736220937 AU Perihelion dist = 2.8907121832 AU Mag: H = 8.58, G = 0.15 Epoch of elements : MJD 60371.83233817 TDT (2024 Mar 02.8323) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#582023Apr24,7.84,2024,3,2,19.976122,-0.467404,-0.730917,-6.818949,4.360540,-0.001117,0.000661,0.000001,-0.000001 73.9175,0.5775,-116.66,-6.78,False UCAC4 454-050214,11.62279529,0.7128719,12.06,11.52,11.23,0.0,4,,11.64371701,0.5774986,2.19,2.05,0,0,0 490,Veritas,13.55,112.468,2.4596,0,0,-1.625,15.59,,5.8,0 0,155.2848,2024,3,2,193.6338,178.0407,9.2931,0.08914,3.17362,2.89071,8.58,5.0,0.15 1.301,0.0243,0.0183,104,0.0190,Known errors,1.02,0,-1,-1 20240302_050214,60139.21 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org