IOTA/IOTA-ES occultation update for (976) Benjamina / UCAC4 533-030083 event on 2024 Jan 05, 00:44 UT Visible from Summary ------- On 2024 Jan 05 UT, the 82.1908711854176 km diameter asteroid (976) Benjamina will occult a 11.3 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.76 mag to 13.96 mag (the magnitude of the asteroid) for at most 5.850 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 05, 00:37 - 2024 Jan 05, 00:52 * geocentric midpoint of event [JD]: 2460314.53116284 * magnitude of target star: 11.29 * magnitude drop [mag]: 2.76 * estimated maximum duration [s]: 5.850 * Moon: 41 % sunlit, 105° distance * Sun: 172° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 86 * 1 sigma uncertainty interval [path widths]: +/- 0.12 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.025, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.001", 101°) * approx speed of asteroid's shadow [km/s]: 14.0844 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 533-030083 by 976 Benjamina on 2024 Jan 5 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 -102 0 0 -17 26 39 0 52 8.4 0 73 7 -17 2 20 -17 51 2 -16 56 34 -17 56 49 .... -101 0 0 -17 8 47 0 52 8.2 1 72 6 -16 44 28 -17 33 10 -16 38 42 -17 38 57 0.10 -100 0 0 -16 50 53 0 52 8.0 2 72 5 -16 26 34 -17 15 16 -16 20 48 -17 21 3 0.18 - 99 0 0 -16 32 58 0 52 7.6 3 72 4 -16 8 38 -16 57 20 -16 2 53 -17 3 8 0.21 - 98 0 0 -16 15 1 0 52 7.0 4 72 3 -15 50 42 -16 39 24 -15 44 56 -16 45 11 0.23 - 97 0 0 -15 57 4 0 52 6.3 5 71 2 -15 32 45 -16 21 26 -15 26 59 -16 27 14 0.24 - 96 0 0 -15 39 6 0 52 5.5 6 71 1 -15 14 47 -16 3 28 -15 9 1 -16 9 16 0.25 - 95 0 0 -15 21 9 0 52 4.5 7 71 0 -14 56 50 -15 45 31 -14 51 4 -15 51 18 0.25 - 94 0 0 -15 3 11 0 52 3.4 8 70 -1 -14 38 53 -15 27 33 -14 33 7 -15 33 20 0.26 - 93 0 0 -14 45 15 0 52 2.1 9 70 -2 -14 20 57 -15 9 37 -14 15 11 -15 15 24 0.26 - 92 0 0 -14 27 20 0 52 0.7 10 70 -3 -14 3 2 -14 51 41 -13 57 16 -14 57 28 0.27 - 91 0 0 -14 9 26 0 51 59.1 11 70 -4 -13 45 9 -14 33 47 -13 39 23 -14 39 34 0.27 - 90 0 0 -13 51 35 0 51 57.4 12 69 -5 -13 27 18 -14 15 55 -13 21 32 -14 21 42 0.27 - 89 0 0 -13 33 46 0 51 55.6 13 69 -6 -13 9 29 -13 58 6 -13 3 44 -14 3 52 0.27 - 88 0 0 -13 15 59 0 51 53.6 14 69 -7 -12 51 43 -13 40 19 -12 45 58 -13 46 5 0.27 - 87 0 0 -12 58 16 0 51 51.5 15 69 -8 -12 34 0 -13 22 35 -12 28 15 -13 28 21 0.27 - 86 0 0 -12 40 36 0 51 49.2 16 68 -9 -12 16 21 -13 4 54 -12 10 36 -13 10 41 0.27 - 85 0 0 -12 23 0 0 51 46.8 17 68 -10 -11 58 46 -12 47 18 -11 53 1 -12 53 4 0.28 - 84 0 0 -12 5 28 0 51 44.3 18 68 -11 -11 41 14 -12 29 46 -11 35 30 -12 35 32 0.28 - 83 0 0 -11 48 1 0 51 41.6 19 68 -12 -11 23 48 -12 12 18 -11 18 4 -12 18 4 0.28 - 82 0 0 -11 30 39 0 51 38.8 20 68 -13 -11 6 27 -11 54 55 -11 0 43 -12 0 41 0.28 - 81 0 0 -11 13 23 0 51 35.8 21 67 -14 -10 49 11 -11 37 38 -10 43 27 -11 43 23 0.28 - 80 0 0 -10 56 12 0 51 32.7 22 67 -15 -10 32 1 -11 20 26 -10 26 17 -11 26 11 0.28 - 79 0 0 -10 39 7 0 51 29.5 23 67 -16 -10 14 56 -11 3 20 -10 9 13 -11 9 5 0.28 - 78 0 0 -10 22 8 0 51 26.1 24 67 -17 - 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6 23 6 - 7 11 3 - 6 17 25 - 7 16 45 0.29 52 0 0 - 7 2 12 0 38 6.5 21 290 -24 - 6 38 13 - 7 26 13 - 6 32 33 - 7 31 55 0.29 53 0 0 - 7 17 32 0 38 3.6 20 290 -23 - 6 53 32 - 7 41 34 - 6 47 51 - 7 47 16 0.29 54 0 0 - 7 33 2 0 38 0.9 19 290 -22 - 7 9 1 - 7 57 5 - 7 3 20 - 8 2 48 0.29 55 0 0 - 7 48 43 0 37 58.3 18 290 -21 - 7 24 41 - 8 12 47 - 7 19 0 - 8 18 30 0.29 56 0 0 - 8 4 33 0 37 55.9 17 290 -20 - 7 40 31 - 8 28 39 - 7 34 49 - 8 34 22 0.29 57 0 0 - 8 20 34 0 37 53.6 15 290 -19 - 7 56 30 - 8 44 40 - 7 50 48 - 8 50 24 0.29 58 0 0 - 8 36 43 0 37 51.4 14 289 -18 - 8 12 39 - 9 0 51 - 8 6 56 - 9 6 35 0.29 59 0 0 - 8 53 2 0 37 49.4 13 289 -17 - 8 28 56 - 9 17 11 - 8 23 14 - 9 22 55 0.29 60 0 0 - 9 9 30 0 37 47.5 12 289 -16 - 8 45 23 - 9 33 39 - 8 39 40 - 9 39 24 0.29 61 0 0 - 9 26 6 0 37 45.8 11 289 -15 - 9 1 58 - 9 50 16 - 8 56 15 - 9 56 1 0.29 62 0 0 - 9 42 50 0 37 44.2 10 289 -14 - 9 18 41 -10 7 1 - 9 12 58 -10 12 46 0.29 63 0 0 - 9 59 41 0 37 42.8 9 289 -13 - 9 35 32 -10 23 54 - 9 29 48 -10 29 39 0.29 64 0 0 -10 16 40 0 37 41.5 8 288 -12 - 9 52 30 -10 40 54 - 9 46 46 -10 46 39 0.29 65 0 0 -10 33 47 0 37 40.4 7 288 -11 -10 9 35 -10 58 1 -10 3 51 -11 3 47 0.30 66 0 0 -10 51 0 0 37 39.4 6 288 -10 -10 26 47 -11 15 15 -10 21 3 -11 21 0 0.30 67 0 0 -11 8 19 0 37 38.5 5 288 -9 -10 44 6 -11 32 35 -10 38 22 -11 38 21 0.30 68 0 0 -11 25 44 0 37 37.8 4 288 -8 -11 1 30 -11 50 1 -10 55 46 -11 55 47 0.30 69 0 0 -11 43 15 0 37 37.3 3 287 -7 -11 19 0 -12 7 32 -11 13 16 -12 13 19 0.30 70 0 0 -12 0 51 0 37 36.9 2 287 -6 -11 36 36 -12 25 9 -11 30 51 -12 30 55 0.31 71 0 0 -12 18 32 0 37 36.6 1 287 -5 -11 54 16 -12 42 51 -11 48 31 -12 48 37 0.32 72 0 0 -12 36 17 0 37 36.5 0 287 -4 -12 12 1 -13 0 37 -12 6 15 -13 6 23 0.45 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: UCAC4 533-030083 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 36 39.3745 DE: +16 24 49.030 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 36 39.3745 DE: +16 24 49.030 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.3 * B mag [mag]: 12.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (976) Benjamina asteroid class: approx. diameter [km]: 82 approx. diameter ["]: 0.050 distance from Earth [AU]: 2.26300 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#93 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): 0.026", 0.001", 100.679° remarks: * orbital elements for (976)Benjamina : Mean anomaly = 268.3687709005 deg Arg. of pericenter = 321.6739562986 deg Long. of node = 242.9937101769 deg Inclination = 7.7270574845 deg Eccentricity = 0.1097145773 Semimajor axis = 3.1911421854 AU Perihelion dist = 2.8410273694 AU Mag: H = 9.36, G = 0.15 Epoch of elements : MJD 60314.03116271 TDT (2024 Jan 05.0312) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#932023Apr24,5.85,2024,1,5,0.747908,0.011923,-0.269728,-7.941874,-0.351394,0.000540,0.000675,0.000002,0.000000 -15.8281,16.3938,170.02,-22.69,False UCAC4 533-030083,6.61093735,16.4136194,12.31,11.29,10.74,0.1,0,,6.63433446,16.3938163,2.76,2.85,0,0,0 976,Benjamina,13.96,82.355,2.2630,0,0,-2.144,-1.37,,4.0,0 0,268.1905,2024,1,4,321.6740,242.9937,7.7271,0.10971,3.19114,2.84103,9.36,5.0,0.15 1.119,0.0257,0.0010,101,0.0060,Known errors,0.97,0,-1,-1 20240105_030083,60137.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org