IOTA/IOTA-ES occultation update for (175114) 2004 QQ / UCAC4 363-104565 event on 2024 Oct 25, 12:21 UT Visible from Summary ------- On 2024 Oct 25 UT, the 1.58046234389452 km diameter asteroid (175114) 2004 QQ will occult a 11.8 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.51 mag to 18.27 mag (the magnitude of the asteroid) for at most 0.080 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: 8 * date and approx. time of event: 2024 Oct 25, 12:18 - 2024 Oct 25, 12:24 * geocentric midpoint of event [JD]: 2460609.01473192 * magnitude of target star: 11.76 * magnitude drop [mag]: 6.51 * estimated maximum duration [s]: 0.080 * Moon: 39 % sunlit, 129° distance * Sun: 53° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 3 * 1 sigma uncertainty interval [path widths]: +/- 8.12 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.089, +/- 0.050) * 1 sigma uncertainty ellipse (major, minor, PA): (0.099", 0.025", 63°) * approx speed of asteroid's shadow [km/s]: 31.5887 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 363-104565 by 175114 2004 QQ on 2024 Oct 25 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 - 55 0 0 -33 33 58 12 18 16.1 1 111 43 -33 34 50 -33 33 7 -33 48 32 -33 19 27 - 33 34 9 - 33 33 48 .... - 54 0 0 -33 53 17 12 18 16.2 2 110 43 -33 54 9 -33 52 26 -34 7 50 -33 38 46 - 33 53 28 - 33 53 7 0.49 - 53 0 0 -34 12 28 12 18 16.3 2 110 44 -34 13 20 -34 11 37 -34 27 1 -33 57 58 - 34 12 39 - 34 12 18 0.51 - 52 0 0 -34 31 31 12 18 16.5 3 109 45 -34 32 22 -34 30 40 -34 46 3 -34 17 1 - 34 31 41 - 34 31 20 0.52 - 51 0 0 -34 50 24 12 18 16.7 4 108 46 -34 51 16 -34 49 33 -35 4 56 -34 35 55 - 34 50 35 - 34 50 14 0.53 - 50 0 0 -35 9 9 12 18 17.0 5 108 46 -35 10 0 -35 8 18 -35 23 40 -34 54 40 - 35 9 20 - 35 8 58 0.53 - 49 0 0 -35 27 44 12 18 17.4 6 107 47 -35 28 35 -35 26 53 -35 42 14 -35 13 15 - 35 27 54 - 35 27 33 0.54 - 48 0 0 -35 46 9 12 18 17.8 7 107 48 -35 47 0 -35 45 18 -36 0 39 -35 31 41 - 35 46 19 - 35 45 58 0.54 - 47 0 0 -36 4 24 12 18 18.2 8 106 48 -36 5 15 -36 3 33 -36 18 53 -35 49 56 - 36 4 34 - 36 4 13 0.54 - 46 0 0 -36 22 28 12 18 18.7 9 106 49 -36 23 19 -36 21 37 -36 36 57 -36 8 1 - 36 22 39 - 36 22 17 0.54 - 45 0 0 -36 40 21 12 18 19.2 9 105 49 -36 41 12 -36 39 30 -36 54 49 -36 25 56 - 36 40 32 - 36 40 11 0.54 - 44 0 0 -36 58 4 12 18 19.8 10 104 50 -36 58 55 -36 57 13 -37 12 31 -36 43 39 - 36 58 14 - 36 57 53 0.54 - 43 0 0 -37 15 35 12 18 20.5 11 104 50 -37 16 26 -37 14 44 -37 30 1 -37 1 10 - 37 15 45 - 37 15 24 0.54 - 42 0 0 -37 32 54 12 18 21.2 12 103 51 -37 33 45 -37 32 3 -37 47 19 -37 18 30 - 37 33 4 - 37 32 43 0.55 - 41 0 0 -37 50 1 12 18 21.9 13 102 52 -37 50 52 -37 49 10 -38 4 26 -37 35 38 - 37 50 12 - 37 49 51 0.55 - 40 0 0 -38 6 56 12 18 22.7 14 102 52 -38 7 47 -38 6 5 -38 21 20 -37 52 34 - 38 7 7 - 38 6 46 0.55 - 39 0 0 -38 23 39 12 18 23.5 14 101 53 -38 24 29 -38 22 48 -38 38 2 -38 9 18 - 38 23 49 - 38 23 28 0.55 - 38 0 0 -38 40 8 12 18 24.3 15 100 53 -38 40 59 -38 39 18 -38 54 31 -38 25 48 - 38 40 19 - 38 39 58 0.55 - 37 0 0 -38 56 25 12 18 25.2 16 100 53 -38 57 16 -38 55 35 -39 10 46 -38 42 6 - 38 56 36 - 38 56 15 0.55 - 36 0 0 -39 12 29 12 18 26.2 17 99 54 -39 13 20 -39 11 39 -39 26 49 -38 58 11 - 39 12 40 - 39 12 19 0.55 - 35 0 0 -39 28 20 12 18 27.2 18 98 54 -39 29 10 -39 27 29 -39 42 39 -39 14 2 - 39 28 30 - 39 28 9 0.55 - 34 0 0 -39 43 56 12 18 28.2 18 98 55 -39 44 47 -39 43 6 -39 58 15 -39 29 40 - 39 44 7 - 39 43 46 0.55 - 33 0 0 -39 59 20 12 18 29.3 19 97 55 -40 0 10 -39 58 29 -40 13 37 -39 45 4 - 39 59 30 - 39 59 9 0.55 - 32 0 0 -40 14 29 12 18 30.4 20 96 55 -40 15 19 -40 13 39 -40 28 45 -40 0 15 - 40 14 39 - 40 14 18 0.55 - 31 0 0 -40 29 24 12 18 31.5 21 96 56 -40 30 14 -40 28 34 -40 43 39 -40 15 11 - 40 29 34 - 40 29 14 0.55 - 30 0 0 -40 44 5 12 18 32.7 22 95 56 -40 44 55 -40 43 15 -40 58 19 -40 29 53 - 40 44 15 - 40 43 54 0.55 - 29 0 0 -40 58 31 12 18 33.9 22 94 56 -40 59 22 -40 57 41 -41 12 44 -40 44 21 - 40 58 42 - 40 58 21 0.55 - 28 0 0 -41 12 43 12 18 35.1 23 94 57 -41 13 34 -41 11 53 -41 26 55 -40 58 34 - 41 12 54 - 41 12 33 0.55 - 27 0 0 -41 26 41 12 18 36.4 24 93 57 -41 27 31 -41 25 51 -41 40 52 -41 12 32 - 41 26 51 - 41 26 30 0.55 - 26 0 0 -41 40 23 12 18 37.7 25 92 57 -41 41 13 -41 39 33 -41 54 33 -41 26 16 - 41 40 34 - 41 40 13 0.55 - 25 0 0 -41 53 51 12 18 39.0 25 91 57 -41 54 41 -41 53 1 -42 8 0 -41 39 45 - 41 54 1 - 41 53 41 0.55 - 24 0 0 -42 7 4 12 18 40.4 26 90 57 -42 7 54 -42 6 14 -42 21 11 -41 52 58 - 42 7 14 - 42 6 54 0.55 - 23 0 0 -42 20 1 12 18 41.8 27 90 58 -42 20 51 -42 19 12 -42 34 8 -42 5 57 - 42 20 12 - 42 19 51 0.55 - 22 0 0 -42 32 44 12 18 43.3 28 89 58 -42 33 34 -42 31 54 -42 46 49 -42 18 41 - 42 32 54 - 42 32 34 0.55 - 21 0 0 -42 45 11 12 18 44.7 28 88 58 -42 46 1 -42 44 21 -42 59 15 -42 31 9 - 42 45 21 - 42 45 1 0.55 - 20 0 0 -42 57 23 12 18 46.2 29 87 58 -42 58 12 -42 56 33 -43 11 26 -42 43 22 - 42 57 33 - 42 57 13 0.55 - 19 0 0 -43 9 19 12 18 47.7 30 86 58 -43 10 9 -43 8 30 -43 23 21 -42 55 19 - 43 9 29 - 43 9 9 0.55 - 18 0 0 -43 21 0 12 18 49.3 31 86 58 -43 21 49 -43 20 11 -43 35 1 -43 7 1 - 43 21 10 - 43 20 50 0.55 - 17 0 0 -43 32 25 12 18 50.8 31 85 58 -43 33 15 -43 31 36 -43 46 25 -43 18 28 - 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31 18 6 - 31 17 44 0.57 114 0 0 -30 57 36 12 23 45.2 26 265 -21 -30 58 28 -30 56 45 -31 12 12 -30 43 2 - 30 57 47 - 30 57 25 0.57 115 0 0 -30 37 13 12 23 46.9 26 264 -22 -30 38 4 -30 36 21 -30 51 49 -30 22 39 - 30 37 23 - 30 37 2 0.57 116 0 0 -30 16 45 12 23 48.5 25 263 -23 -30 17 37 -30 15 54 -30 31 21 -30 2 11 - 30 16 56 - 30 16 34 0.57 117 0 0 -29 56 14 12 23 50.0 24 263 -24 -29 57 6 -29 55 23 -30 10 50 -29 41 40 - 29 56 25 - 29 56 3 0.57 118 0 0 -29 35 40 12 23 51.5 23 262 -25 -29 36 31 -29 34 49 -29 50 16 -29 21 6 - 29 35 51 - 29 35 29 0.57 119 0 0 -29 15 3 12 23 53.0 22 262 -26 -29 15 55 -29 14 12 -29 29 39 -29 0 30 - 29 15 14 - 29 14 53 0.57 120 0 0 -28 54 25 12 23 54.4 21 261 -27 -28 55 16 -28 53 33 -29 9 0 -28 39 51 - 28 54 35 - 28 54 14 0.57 121 0 0 -28 33 44 12 23 55.7 20 260 -27 -28 34 36 -28 32 53 -28 48 20 -28 19 11 - 28 33 55 - 28 33 34 0.57 122 0 0 -28 13 3 12 23 57.0 19 260 -28 -28 13 54 -28 12 11 -28 27 38 -27 58 30 - 28 13 13 - 28 12 52 0.57 123 0 0 -27 52 21 12 23 58.2 18 259 -29 -27 53 12 -27 51 29 -28 6 55 -27 37 48 - 27 52 31 - 27 52 10 0.58 124 0 0 -27 31 39 12 23 59.4 17 259 -30 -27 32 30 -27 30 47 -27 46 13 -27 17 6 - 27 31 49 - 27 31 28 0.58 125 0 0 -27 10 57 12 24 0.5 16 258 -31 -27 11 48 -27 10 6 -27 25 31 -26 56 25 - 27 11 8 - 27 10 46 0.58 126 0 0 -26 50 16 12 24 1.6 15 258 -32 -26 51 8 -26 49 25 -27 4 50 -26 35 45 - 26 50 27 - 26 50 6 0.58 127 0 0 -26 29 37 12 24 2.6 14 257 -33 -26 30 28 -26 28 46 -26 44 10 -26 15 6 - 26 29 47 - 26 29 26 0.58 128 0 0 -26 8 59 12 24 3.5 13 257 -34 -26 9 51 -26 8 8 -26 23 32 -25 54 29 - 26 9 10 - 26 8 49 0.58 129 0 0 -25 48 25 12 24 4.4 13 256 -35 -25 49 16 -25 47 33 -26 2 57 -25 33 55 - 25 48 35 - 25 48 14 0.59 130 0 0 -25 27 53 12 24 5.2 12 256 -36 -25 28 44 -25 27 2 -25 42 24 -25 13 23 - 25 28 3 - 25 27 42 0.59 131 0 0 -25 7 24 12 24 5.9 11 255 -37 -25 8 16 -25 6 33 -25 21 55 -24 52 56 - 25 7 35 - 25 7 14 0.59 132 0 0 -24 47 0 12 24 6.6 10 255 -38 -24 47 51 -24 46 9 -25 1 30 -24 32 32 - 24 47 11 - 24 46 49 0.60 133 0 0 -24 26 40 12 24 7.2 9 255 -39 -24 27 31 -24 25 49 -24 41 10 -24 12 13 - 24 26 51 - 24 26 30 0.60 134 0 0 -24 6 25 12 24 7.8 8 254 -39 -24 7 16 -24 5 34 -24 20 54 -23 51 58 - 24 6 36 - 24 6 15 0.61 135 0 0 -23 46 16 12 24 8.3 7 254 -40 -23 47 7 -23 45 25 -24 0 44 -23 31 50 - 23 46 26 - 23 46 5 0.61 136 0 0 -23 26 12 12 24 8.7 6 253 -41 -23 27 3 -23 25 21 -23 40 40 -23 11 47 - 23 26 23 - 23 26 2 0.63 137 0 0 -23 6 16 12 24 9.1 5 253 -42 -23 7 6 -23 5 25 -23 20 42 -22 51 51 - 23 6 26 - 23 6 5 0.64 138 0 0 -22 46 26 12 24 9.4 4 253 -43 -22 47 17 -22 45 35 -23 0 51 -22 32 2 - 22 46 36 - 22 46 15 0.66 139 0 0 -22 26 43 12 24 9.6 3 252 -44 -22 27 34 -22 25 52 -22 41 8 -22 12 20 - 22 26 54 - 22 26 33 0.70 140 0 0 -22 7 9 12 24 9.8 2 252 -45 -22 8 0 -22 6 18 -22 21 33 -21 52 47 - 22 7 19 - 22 6 58 0.78 141 0 0 -21 47 43 12 24 9.9 1 251 -46 -21 48 34 -21 46 52 -22 2 6 -21 33 22 - 21 47 53 - 21 47 32 1.04 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 363-104565 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 39 13.0544 DE: -17 31 34.293 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 39 13.0544 DE: -17 31 34.293 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.300) * V mag [mag]: 11.8 * B mag [mag]: 14.7 * Diameter [mas]: 2.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (175114) 2004 QQ asteroid class: approx. diameter [km]: 2 approx. diameter ["]: 0.003 distance from Earth [AU]: 0.68770 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#134 date of fit: 2023 Mar 01 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): 0.099", 0.025", 63.194° remarks: * orbital elements for (175114)2004 QQ : Mean anomaly = 4.6513106454 deg Arg. of pericenter = 31.4886891165 deg Long. of node = 288.0797703361 deg Inclination = 5.7189560242 deg Eccentricity = 0.6632843286 Semimajor axis = 2.2497628202 AU Perihelion dist = 0.7575303984 AU Mag: H = 16.64, G = 0.15 Epoch of elements : MJD 60608.51473192 TDT (2024 Oct 25.5147) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1342023Mar01,0.08,2024,10,25,12.353566,0.051813,-0.477817,17.723591,1.940894,-0.004480,-0.000199,0.000000,0.000000 45.4756,-17.5402,-9.30,-12.37,False UCAC4 363-104565,17.65362635,-17.5261924,14.74,11.76,10.15,2.0,4,,17.67742372,-17.5402456,6.51,7.67,0,0,0 175114,2004 QQ,18.27,2.578,0.6877,0,0,15.853,24.87,,0.2,0 0,4.5010,2024,10,25,31.4887,288.0798,5.7190,0.66328,2.24976,0.75753,16.64,5.0,0.15 8.997,0.0987,0.0253,63,0.0420,Known errors,0.76,0,-1,-1 20241025_104565,60140.66 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org