IOTA/IOTA-ES occultation update for (4277) Holubov / TYC 7318-01309-1 event on 2024 Jun 14, 03:55 UT Visible from Summary ------- On 2024 Jun 14 UT, the 10.2639106830847 km diameter asteroid (4277) Holubov will occult a 9.9 mag star in the constellation Lupus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.57 mag to 17.50 mag (the magnitude of the asteroid) for at most 0.900 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: 68 * date and approx. time of event: 2024 Jun 14, 03:46 - 2024 Jun 14, 04:04 * geocentric midpoint of event [JD]: 2460475.66327380 * magnitude of target star: 9.93 * magnitude drop [mag]: 7.57 * estimated maximum duration [s]: 0.900 * Moon: 49 % sunlit, 67° distance * Sun: 152° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.87 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.001", 101°) * approx speed of asteroid's shadow [km/s]: 11.6147 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7318-01309-1 by 4277 Holubov on 2024 Jun 14 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 -148 0 0 40 32 53 4 3 52.0 0 135 13 40 37 2 40 28 44 40 44 19 40 21 28 .... -147 0 0 39 47 27 4 3 51.8 2 135 12 39 51 37 39 43 17 39 58 56 39 35 59 -0.08 -146 0 0 39 1 3 4 3 51.4 3 136 11 39 5 14 38 56 51 39 12 35 38 49 31 -0.18 -145 0 0 38 13 41 4 3 50.8 4 136 10 38 17 53 38 9 28 38 25 17 38 2 6 -0.22 -144 0 0 37 25 22 4 3 50.0 5 137 9 37 29 36 37 21 8 37 37 1 37 13 44 -0.25 -143 0 0 36 36 7 4 3 49.0 6 138 8 36 40 22 36 31 53 36 47 49 36 24 26 -0.26 -142 0 0 35 45 58 4 3 47.6 7 138 7 35 50 14 35 41 42 35 57 43 35 34 14 -0.27 -141 0 0 34 54 56 4 3 46.1 8 139 6 34 59 12 34 50 39 35 6 43 34 43 9 -0.28 -140 0 0 34 3 1 4 3 44.3 10 139 4 34 7 19 33 58 44 34 14 51 33 51 13 -0.28 -139 0 0 33 10 17 4 3 42.2 11 140 3 33 14 36 33 5 59 33 22 9 32 58 26 -0.29 -138 0 0 32 16 45 4 3 39.8 12 141 2 32 21 4 32 12 26 32 28 38 32 4 52 -0.29 -137 0 0 31 22 26 4 3 37.1 13 141 1 31 26 46 31 18 6 31 34 21 31 10 32 -0.30 -136 0 0 30 27 23 4 3 34.2 14 142 0 30 31 44 30 23 3 30 39 20 30 15 28 -0.30 -135 0 0 29 31 39 4 3 30.9 16 142 -1 29 36 0 29 27 19 29 43 37 29 19 43 -0.30 -134 0 0 28 35 16 4 3 27.4 17 143 -3 28 39 37 28 30 56 28 47 15 28 23 19 -0.30 -133 0 0 27 38 17 4 3 23.5 18 143 -4 27 42 38 27 33 56 27 50 16 27 26 19 -0.30 -132 0 0 26 40 44 4 3 19.4 20 144 -5 26 45 5 26 36 23 26 52 43 26 28 45 -0.31 -131 0 0 25 42 40 4 3 14.9 21 144 -6 25 47 2 25 38 19 25 54 40 25 30 42 -0.31 -130 0 0 24 44 9 4 3 10.1 22 145 -8 24 48 30 24 39 48 24 56 8 24 32 11 -0.31 -129 0 0 23 45 13 4 3 5.0 23 145 -9 23 49 34 23 40 52 23 57 12 23 33 15 -0.31 -128 0 0 22 45 56 4 2 59.5 25 145 -10 22 50 17 22 41 36 22 57 54 22 33 59 -0.31 -127 0 0 21 46 21 4 2 53.8 26 146 -11 21 50 42 21 42 1 21 58 18 21 34 25 -0.31 -126 0 0 20 46 31 4 2 47.8 27 146 -13 20 50 51 20 42 12 20 58 27 20 34 36 -0.31 -125 0 0 19 46 30 4 2 41.4 29 147 -14 19 50 50 19 42 11 19 58 25 19 34 37 -0.31 -124 0 0 18 46 21 4 2 34.8 30 147 -15 18 50 40 18 42 2 18 58 14 18 34 29 -0.31 -123 0 0 17 46 7 4 2 27.8 31 148 -17 17 50 25 17 41 49 17 57 58 17 34 17 -0.31 -122 0 0 16 45 52 4 2 20.6 33 148 -18 16 50 9 16 41 34 16 57 41 16 34 4 -0.31 -121 0 0 15 45 38 4 2 13.1 34 149 -19 15 49 55 15 41 22 15 57 25 15 33 53 -0.31 -120 0 0 14 45 30 4 2 5.3 35 149 -20 14 49 46 14 41 15 14 57 14 14 33 47 -0.31 -119 0 0 13 45 30 4 1 57.3 37 150 -22 13 49 45 13 41 16 13 57 12 13 33 50 -0.31 -118 0 0 12 45 42 4 1 49.0 38 150 -23 12 49 56 12 41 28 12 57 21 12 34 4 -0.31 -117 0 0 11 46 8 4 1 40.4 39 150 -24 11 50 21 11 41 56 11 57 44 11 34 33 -0.31 -116 0 0 10 46 52 4 1 31.7 41 151 -26 10 51 3 10 42 41 10 58 25 10 35 20 -0.31 -115 0 0 9 47 56 4 1 22.7 42 151 -27 9 52 6 9 43 46 9 59 25 9 36 28 -0.31 -114 0 0 8 49 23 4 1 13.5 43 152 -28 8 53 32 8 45 14 9 0 49 8 37 58 -0.31 -113 0 0 7 51 16 4 1 4.1 45 152 -30 7 55 24 7 47 8 8 2 38 7 39 54 -0.31 -112 0 0 6 53 37 4 0 54.5 46 153 -31 6 57 43 6 49 31 7 4 56 6 42 19 -0.31 -111 0 0 5 56 29 4 0 44.7 47 154 -32 6 0 34 5 52 24 6 7 44 5 45 15 -0.31 -110 0 0 4 59 53 4 0 34.8 48 154 -34 5 3 57 4 55 50 5 11 5 4 48 43 -0.31 -109 0 0 4 3 53 4 0 24.8 50 155 -35 4 7 55 3 59 50 4 15 0 3 52 46 -0.31 -108 0 0 3 8 29 4 0 14.6 51 155 -36 3 12 30 3 4 28 3 19 33 2 57 26 -0.31 -107 0 0 2 13 44 4 0 4.2 52 156 -38 2 17 44 2 9 45 2 24 44 2 2 46 -0.31 -106 0 0 1 19 40 3 59 53.8 53 157 -39 1 23 38 1 15 42 1 30 36 1 8 45 -0.31 -105 0 0 0 26 18 3 59 43.3 55 158 -40 0 30 15 0 22 22 0 37 10 0 15 27 -0.31 -104 0 0 - 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44 0 0 -28 1 29 3 50 11.3 52 253 -77 -27 58 32 -28 4 26 -27 53 21 -28 9 37 -0.30 - 43 0 0 -28 6 22 3 50 4.5 51 253 -76 -28 3 25 -28 9 19 -27 58 14 -28 14 29 -0.30 - 42 0 0 -28 10 36 3 49 57.8 51 253 -75 -28 7 39 -28 13 33 -28 2 29 -28 18 43 -0.30 - 41 0 0 -28 14 11 3 49 51.2 50 253 -74 -28 11 15 -28 17 8 -28 6 5 -28 22 18 -0.30 - 40 0 0 -28 17 8 3 49 44.6 49 253 -74 -28 14 11 -28 20 4 -28 9 1 -28 25 14 -0.30 - 39 0 0 -28 19 25 3 49 38.2 48 252 -73 -28 16 28 -28 22 22 -28 11 19 -28 27 31 -0.30 - 38 0 0 -28 21 4 3 49 31.8 47 252 -72 -28 18 7 -28 24 0 -28 12 57 -28 29 9 -0.30 - 37 0 0 -28 22 3 3 49 25.5 47 252 -71 -28 19 7 -28 25 0 -28 13 57 -28 30 9 -0.30 - 36 0 0 -28 22 24 3 49 19.3 46 252 -70 -28 19 28 -28 25 21 -28 14 18 -28 30 30 -0.30 - 35 0 0 -28 22 6 3 49 13.2 45 252 -69 -28 19 9 -28 25 3 -28 14 0 -28 30 12 -0.30 - 34 0 0 -28 21 9 3 49 7.1 44 252 -68 -28 18 12 -28 24 6 -28 13 3 -28 29 15 -0.30 - 33 0 0 -28 19 33 3 49 1.2 43 251 -68 -28 16 36 -28 22 30 -28 11 26 -28 27 39 -0.30 - 32 0 0 -28 17 18 3 48 55.3 43 251 -67 -28 14 21 -28 20 15 -28 9 11 -28 25 24 -0.30 - 31 0 0 -28 14 24 3 48 49.5 42 251 -66 -28 11 27 -28 17 20 -28 6 16 -28 22 30 -0.30 - 30 0 0 -28 10 50 3 48 43.8 41 251 -65 -28 7 53 -28 13 47 -28 2 42 -28 18 57 -0.30 - 29 0 0 -28 6 37 3 48 38.2 40 250 -64 -28 3 39 -28 9 34 -27 58 29 -28 14 45 -0.31 - 28 0 0 -28 1 44 3 48 32.6 39 250 -63 -27 58 46 -28 4 41 -27 53 35 -28 9 52 -0.31 - 27 0 0 -27 56 11 3 48 27.2 38 250 -63 -27 53 14 -27 59 9 -27 48 2 -28 4 20 -0.31 - 26 0 0 -27 49 59 3 48 21.8 38 249 -62 -27 47 1 -27 52 57 -27 41 48 -27 58 8 -0.31 - 25 0 0 -27 43 6 3 48 16.5 37 249 -61 -27 40 7 -27 46 4 -27 34 55 -27 51 16 -0.31 - 24 0 0 -27 35 32 3 48 11.3 36 249 -60 -27 32 34 -27 38 31 -27 27 20 -27 43 44 -0.31 - 23 0 0 -27 27 18 3 48 6.2 35 249 -59 -27 24 19 -27 30 17 -27 19 5 -27 35 31 -0.31 - 22 0 0 -27 18 23 3 48 1.2 34 248 -58 -27 15 23 -27 21 22 -27 10 9 -27 26 36 -0.31 - 21 0 0 -27 8 46 3 47 56.3 33 248 -57 -27 5 46 -27 11 46 -27 0 31 -27 17 1 -0.31 - 20 0 0 -26 58 28 3 47 51.5 32 248 -56 -26 55 27 -27 1 28 -26 50 11 -27 6 44 -0.31 - 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7 0 0 -23 38 8 3 46 57.8 21 243 -45 -23 34 59 -23 41 17 -23 29 28 -23 46 48 -0.32 - 6 0 0 -23 17 21 3 46 54.5 20 243 -44 -23 14 11 -23 20 31 -23 8 38 -23 26 3 -0.32 - 5 0 0 -22 55 44 3 46 51.3 19 242 -43 -22 52 34 -22 58 55 -22 46 59 -23 4 29 -0.32 - 4 0 0 -22 33 19 3 46 48.2 18 242 -42 -22 30 7 -22 36 30 -22 24 31 -22 42 6 -0.32 - 3 0 0 -22 10 2 3 46 45.3 17 242 -41 -22 6 50 -22 13 15 -22 1 12 -22 18 53 -0.32 - 2 0 0 -21 45 56 3 46 42.5 16 241 -40 -21 42 42 -21 49 9 -21 37 2 -21 54 49 -0.32 - 1 0 0 -21 20 57 3 46 39.9 15 241 -39 -21 17 43 -21 24 12 -21 12 1 -21 29 53 -0.32 0 0 0 -20 55 7 3 46 37.4 14 241 -38 -20 51 51 -20 58 23 -20 46 8 -21 4 6 -0.32 1 0 0 -20 28 24 3 46 35.0 13 240 -37 -20 25 7 -20 31 41 -20 19 22 -20 37 26 -0.32 2 0 0 -20 0 48 3 46 32.9 12 240 -36 -19 57 29 -20 4 6 -19 51 42 -20 9 53 -0.32 3 0 0 -19 32 17 3 46 30.8 10 240 -35 -19 28 58 -19 35 36 -19 23 8 -19 41 25 -0.32 4 0 0 -19 2 52 3 46 29.0 9 239 -34 -18 59 31 -19 6 12 -18 53 39 -19 12 4 -0.32 5 0 0 -18 32 31 3 46 27.3 8 239 -33 -18 29 9 -18 35 53 -18 23 15 -18 41 46 -0.32 6 0 0 -18 1 14 3 46 25.9 7 239 -32 -17 57 51 -18 4 37 -17 51 55 -18 10 33 -0.32 7 0 0 -17 29 1 3 46 24.6 6 238 -31 -17 25 36 -17 32 25 -17 19 38 -17 38 23 -0.33 8 0 0 -16 55 50 3 46 23.5 5 238 -30 -16 52 24 -16 59 16 -16 46 23 -17 5 16 -0.33 9 0 0 -16 21 41 3 46 22.6 4 238 -28 -16 18 14 -16 25 8 -16 12 11 -16 31 11 -0.33 10 0 0 -15 46 34 3 46 21.9 3 238 -27 -15 43 5 -15 50 3 -15 36 59 -15 56 8 -0.33 11 0 0 -15 10 27 3 46 21.4 2 237 -26 -15 6 57 -15 13 58 -15 0 49 -15 20 6 -0.34 12 0 0 -14 33 21 3 46 21.2 1 237 -25 -14 29 50 -14 36 53 -14 23 38 -14 43 4 -0.37 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: TYC 7318-01309-1 * constellation : Lupus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 30 30.8478 DE: -31 53 42.787 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 30 30.8478 DE: -31 53 42.787 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.9 * B mag [mag]: 10.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4277) Holubov asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.09700 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.015", 0.001", 100.5° remarks: * orbital elements for (4277)Holubov : Mean anomaly = 219.9027293232 deg Arg. of pericenter = 94.9197428189 deg Long. of node = 300.0426857264 deg Inclination = 10.6430658150 deg Eccentricity = 0.1381333481 Semimajor axis = 2.7250800404 AU Perihelion dist = 2.3486556106 AU Mag: H = 12.89, G = 0.15 Epoch of elements : MJD 60475.16327396 TDT (2024 Jun 14.1633) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,0.90,2024,6,14,3.918571,0.158790,0.240145,-5.468951,3.614908,0.002609,0.000473,0.000001,0.000000 -88.7099,-31.9809,121.31,23.28,False TYC 7318-01309-1,15.50856884,-31.8952185,10.45,9.93,9.65,0.1,0,,15.53420327,-31.9808514,7.57,7.41,0,0,0 4277,Holubov,17.50,10.416,2.0970,0,0,-1.802,15.16,,0.8,0 0,219.8670,2024,6,14,94.9197,300.0427,10.6431,0.13813,2.72508,2.34866,12.88,5.0,0.15 1.876,0.0150,0.0014,101,0.0060,Known errors,1.13,0,-1,-1 20240614_1309-1,60139.38 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:13 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org