IOTA/IOTA-ES occultation update for (2808) Belgrano / TYC 7411-06266-1 event on 2024 May 15, 04:48 UT Visible from Summary ------- On 2024 May 15 UT, the 14.83441740941 km diameter asteroid (2808) Belgrano will occult a 11.1 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.70 mag to 16.76 mag (the magnitude of the asteroid) for at most 2.760 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: 90 * date and approx. time of event: 2024 May 15, 04:28 - 2024 May 15, 05:07 * geocentric midpoint of event [JD]: 2460445.70007287 * magnitude of target star: 11.07 * magnitude drop [mag]: 5.70 * estimated maximum duration [s]: 2.760 * Moon: 47 % sunlit, 138° distance * Sun: 135° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.52 * 1 sigma uncertainty interval [seconds]: +/- 5.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.004", 77°) * approx speed of asteroid's shadow [km/s]: 5.4391 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7411-06266-1 by 2808 Belgrano on 2024 May 15 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 -128 0 0 -15 20 1 5 7 37.4 1 123 -42 -15 15 10 -15 24 52 -15 10 6 -15 29 55 .... -127 0 0 -15 57 28 5 7 36.7 2 123 -43 -15 52 38 -16 2 19 -15 47 36 -16 7 21 0.07 -126 0 0 -16 34 25 5 7 35.5 3 122 -44 -16 29 36 -16 39 14 -16 24 34 -16 44 16 0.04 -125 0 0 -17 10 50 5 7 34.0 4 122 -45 -17 6 2 -17 15 38 -17 1 1 -17 20 39 0.03 -124 0 0 -17 46 42 5 7 32.0 6 122 -46 -17 41 55 -17 51 30 -17 36 56 -17 56 29 0.02 -123 0 0 -18 22 2 5 7 29.5 7 122 -47 -18 17 16 -18 26 48 -18 12 17 -18 31 47 0.02 -122 0 0 -18 56 49 5 7 26.7 8 121 -48 -18 52 3 -19 1 34 -18 47 6 -19 6 31 0.01 -121 0 0 -19 31 2 5 7 23.4 9 121 -49 -19 26 17 -19 35 46 -19 21 21 -19 40 42 0.01 -120 0 0 -20 4 41 5 7 19.8 10 121 -50 -19 59 58 -20 9 24 -19 55 2 -20 14 19 0.01 -119 0 0 -20 37 46 5 7 15.8 11 120 -51 -20 33 4 -20 42 28 -20 28 9 -20 47 22 0.01 -118 0 0 -21 10 17 5 7 11.4 12 120 -52 -21 5 35 -21 14 58 -21 0 42 -21 19 51 0.01 -117 0 0 -21 42 13 5 7 6.7 13 119 -53 -21 37 33 -21 46 53 -21 32 40 -21 51 45 0.01 -116 0 0 -22 13 34 5 7 1.6 14 119 -54 -22 8 55 -22 18 14 -22 4 4 -22 23 5 0.01 -115 0 0 -22 44 21 5 6 56.2 15 119 -55 -22 39 43 -22 48 59 -22 34 53 -22 53 50 0.01 -114 0 0 -23 14 33 5 6 50.5 16 118 -56 -23 9 56 -23 19 10 -23 5 7 -23 24 0 0.01 -113 0 0 -23 44 10 5 6 44.4 17 118 -57 -23 39 34 -23 48 46 -23 34 46 -23 53 35 0.01 -112 0 0 -24 13 12 5 6 38.1 18 118 -58 -24 8 37 -24 17 48 -24 3 50 -24 22 35 0.01 -111 0 0 -24 41 40 5 6 31.4 19 117 -58 -24 37 5 -24 46 14 -24 32 19 -24 51 0 0.01 -110 0 0 -25 9 32 5 6 24.5 20 117 -59 -25 4 59 -25 14 5 -25 0 14 -25 18 50 0.01 -109 0 0 -25 36 50 5 6 17.4 21 116 -60 -25 32 17 -25 41 22 -25 27 33 -25 46 6 0.01 -108 0 0 -26 3 33 5 6 9.9 22 116 -61 -25 59 1 -26 8 4 -25 54 18 -26 12 47 0.01 -107 0 0 -26 29 41 5 6 2.2 23 115 -62 -26 25 11 -26 34 12 -26 20 29 -26 38 54 0.01 -106 0 0 -26 55 15 5 5 54.3 24 115 -63 -26 50 46 -26 59 44 -26 46 4 -27 4 26 0.01 -105 0 0 -27 20 15 5 5 46.1 25 115 -63 -27 15 46 -27 24 43 -27 11 6 -27 29 23 0.01 -104 0 0 -27 44 40 5 5 37.7 26 114 -64 -27 40 12 -27 49 7 -27 35 33 -27 53 47 0.01 -103 0 0 -28 8 31 5 5 29.1 27 114 -65 -28 4 4 -28 12 58 -27 59 26 -28 17 36 0.01 -102 0 0 -28 31 49 5 5 20.3 28 113 -65 -28 27 23 -28 36 14 -28 22 46 -28 40 52 0.01 -101 0 0 -28 54 32 5 5 11.3 29 113 -66 -28 50 8 -28 58 57 -28 45 31 -29 3 34 0.01 -100 0 0 -29 16 43 5 5 2.0 30 112 -67 -29 12 19 -29 21 7 -29 7 43 -29 25 42 0.01 - 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9 53 51 4 32 36.4 37 237 6 - 9 49 0 - 9 58 42 - 9 43 56 -10 3 45 0.00 32 0 0 - 9 15 15 4 32 22.5 36 237 7 - 9 10 24 - 9 20 7 - 9 5 20 - 9 25 11 0.00 33 0 0 - 8 36 23 4 32 8.9 35 237 8 - 8 31 31 - 8 41 15 - 8 26 27 - 8 46 19 0.00 34 0 0 - 7 57 14 4 31 55.6 34 237 9 - 7 52 22 - 8 2 7 - 7 47 17 - 8 7 11 0.00 35 0 0 - 7 17 50 4 31 42.7 33 236 11 - 7 12 58 - 7 22 43 - 7 7 52 - 7 27 48 0.00 36 0 0 - 6 38 12 4 31 30.1 32 236 12 - 6 33 19 - 6 43 5 - 6 28 13 - 6 48 11 0.00 37 0 0 - 5 58 21 4 31 17.9 31 236 13 - 5 53 27 - 6 3 14 - 5 48 21 - 6 8 20 0.00 38 0 0 - 5 18 18 4 31 6.0 29 236 14 - 5 13 24 - 5 23 11 - 5 8 17 - 5 28 18 0.00 39 0 0 - 4 38 3 4 30 54.5 28 236 15 - 4 33 9 - 4 42 57 - 4 28 2 - 4 48 4 0.00 40 0 0 - 3 57 39 4 30 43.4 27 236 16 - 3 52 45 - 4 2 34 - 3 47 38 - 4 7 41 0.00 41 0 0 - 3 17 7 4 30 32.7 26 236 17 - 3 12 12 - 3 22 1 - 3 7 5 - 3 27 8 0.00 42 0 0 - 2 36 26 4 30 22.4 25 236 18 - 2 31 32 - 2 41 21 - 2 26 24 - 2 46 29 0.00 43 0 0 - 1 55 40 4 30 12.6 24 236 20 - 1 50 45 - 2 0 35 - 1 45 38 - 2 5 43 0.00 44 0 0 - 1 14 49 4 30 3.1 22 236 21 - 1 9 54 - 1 19 44 - 1 4 46 - 1 24 52 0.00 45 0 0 - 0 33 55 4 29 54.1 21 236 22 - 0 29 0 - 0 38 50 - 0 23 52 - 0 43 58 0.00 46 0 0 0 7 2 4 29 45.6 20 236 23 0 11 57 0 2 7 0 17 5 - 0 3 1 0.00 47 0 0 0 48 0 4 29 37.5 19 236 24 0 52 55 0 43 5 0 58 3 0 37 57 0.00 48 0 0 1 28 57 4 29 29.9 18 236 25 1 33 53 1 24 2 1 39 1 1 18 54 0.00 49 0 0 2 9 53 4 29 22.7 17 236 26 2 14 48 2 4 58 2 19 56 1 59 50 0.00 50 0 0 2 50 45 4 29 16.1 15 236 28 2 55 41 2 45 50 3 0 48 2 40 42 0.00 51 0 0 3 31 33 4 29 9.9 14 236 29 3 36 28 3 26 38 3 41 36 3 21 31 0.00 52 0 0 4 12 16 4 29 4.1 13 236 30 4 17 10 4 7 21 4 22 18 4 2 13 0.00 53 0 0 4 52 51 4 28 58.9 12 236 31 4 57 45 4 47 56 5 2 53 4 42 49 0.00 54 0 0 5 33 17 4 28 54.2 11 236 32 5 38 11 5 28 23 5 43 18 5 23 16 0.00 55 0 0 6 13 34 4 28 50.0 9 236 33 6 18 28 6 8 40 6 23 34 6 3 33 0.01 56 0 0 6 53 39 4 28 46.2 8 236 34 6 58 33 6 48 45 7 3 39 6 43 39 0.01 57 0 0 7 33 32 4 28 43.0 7 236 36 7 38 25 7 28 38 7 43 31 7 23 32 0.01 58 0 0 8 13 10 4 28 40.3 6 236 37 8 18 3 8 8 17 8 23 9 8 3 12 0.02 59 0 0 8 52 34 4 28 38.0 5 237 38 8 57 26 8 47 42 9 2 32 8 42 36 0.02 60 0 0 9 31 41 4 28 36.3 4 237 39 9 36 33 9 26 49 9 41 38 9 21 45 0.03 61 0 0 10 10 31 4 28 35.1 2 237 40 10 15 22 10 5 39 10 20 26 10 0 35 0.06 62 0 0 10 49 1 4 28 34.3 1 237 41 10 53 52 10 44 10 10 58 55 10 39 7 0.12 63 0 0 11 27 11 4 28 34.0 0 237 42 11 32 2 11 22 21 .. .. .. 11 17 18 2.11 Uncertainty in time = +/- 6 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: TYC 7411-06266-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 41 47.7289 DE: -31 59 11.031 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 41 47.7290 DE: -31 59 11.031 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 11.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2808) Belgrano asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.44850 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 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): 0.018", 0.004", 76.8° remarks: * orbital elements for (2808)Belgrano : Mean anomaly = 197.4580974091 deg Arg. of pericenter = 116.7030081442 deg Long. of node = 314.2893837732 deg Inclination = 8.9625433920 deg Eccentricity = 0.0810459966 Semimajor axis = 3.0076923638 AU Perihelion dist = 2.7639309387 AU Mag: H = 11.52, G = 0.15 Epoch of elements : MJD 60445.20007396 TDT (2024 May 15.2001) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,2.76,2024,5,15,4.801749,0.009061,-0.032755,-2.959250,-0.817143,-0.004018,0.000327,0.000001,0.000000 -24.5896,-31.9629,107.07,18.98,False TYC 7411-06266-1,18.69659136,-31.9863974,11.79,11.07,10.68,0.1,0,,18.72317828,-31.9628870,5.70,5.64,0,0,0 2808,Belgrano,16.76,15.012,2.4485,0,0,-0.835,-2.94,,1.6,0 0,197.4203,2024,5,15,116.7030,314.2894,8.9625,0.08105,3.00769,2.76393,11.51,5.0,0.15 1.522,0.0180,0.0043,77,0.0044,Known errors,0.76,0,-1,-1 20240515_6266-1,60139.34 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 08:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org