IOTA/IOTA-ES occultation update for (175114) 2004 QQ / UCAC4 375-145444 event on 2024 Nov 04, 11:20 UT Visible from Summary ------- On 2024 Nov 04 UT, the 1.57 km diameter asteroid (175114) 2004 QQ will occult a 12.2 mag star in the constellation Scutum for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.95 mag to 18.14 mag (the magnitude of the asteroid) for at most 0.050 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: 4 * date and approx. time of event: 2024 Nov 04, 11:17 - 2024 Nov 04, 11:23 * geocentric midpoint of event [JD]: 2460618.97258838 * magnitude of target star: 12.19 * magnitude drop [mag]: 5.95 * estimated maximum duration [s]: 0.050 * Moon: 8 % sunlit, 29° distance * Sun: 60° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 2 * 1 sigma uncertainty interval [path widths]: +/- 13.99 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.120, +/- 0.071) * 1 sigma uncertainty ellipse (major, minor, PA): (0.136", 0.030", 61°) * approx speed of asteroid's shadow [km/s]: 32.5410 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 375-145444 by 175114 2004 QQ on 2024 Nov 4 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 - 36 0 0 -43 52 39 11 17 49.9 0 111 44 -43 53 12 -43 52 6 -44 8 31 -43 36 50 .... - 35 0 0 -44 9 9 11 17 50.0 1 110 45 -44 9 42 -44 8 36 -44 25 0 -43 53 21 0.57 - 34 0 0 -44 25 25 11 17 50.0 2 109 45 -44 25 58 -44 24 52 -44 41 15 -44 9 38 0.62 - 33 0 0 -44 41 28 11 17 50.2 3 109 46 -44 42 1 -44 40 55 -44 57 17 -44 25 42 0.64 - 32 0 0 -44 57 17 11 17 50.3 3 108 46 -44 57 50 -44 56 44 -45 13 5 -44 41 33 0.65 - 31 0 0 -45 12 53 11 17 50.5 4 107 47 -45 13 26 -45 12 20 -45 28 39 -44 57 10 0.66 - 30 0 0 -45 28 14 11 17 50.8 5 106 47 -45 28 47 -45 27 41 -45 43 59 -45 12 32 0.66 - 29 0 0 -45 43 22 11 17 51.1 6 106 48 -45 43 55 -45 42 49 -45 59 6 -45 27 41 0.66 - 28 0 0 -45 58 15 11 17 51.4 6 105 48 -45 58 48 -45 57 42 -46 13 58 -45 42 36 0.67 - 27 0 0 -46 12 54 11 17 51.8 7 104 49 -46 13 27 -46 12 21 -46 28 35 -45 57 16 0.67 - 26 0 0 -46 27 18 11 17 52.2 8 104 49 -46 27 51 -46 26 46 -46 42 58 -46 11 41 0.67 - 25 0 0 -46 41 28 11 17 52.6 9 103 49 -46 42 1 -46 40 55 -46 57 7 -46 25 52 0.67 - 24 0 0 -46 55 23 11 17 53.1 9 102 50 -46 55 56 -46 54 50 -47 11 0 -46 39 49 0.67 - 23 0 0 -47 9 3 11 17 53.6 10 101 50 -47 9 36 -47 8 31 -47 24 39 -46 53 30 0.67 - 22 0 0 -47 22 28 11 17 54.1 11 101 50 -47 23 1 -47 21 56 -47 38 3 -47 6 57 0.67 - 21 0 0 -47 35 39 11 17 54.7 11 100 51 -47 36 11 -47 35 6 -47 51 12 -47 20 9 0.67 - 20 0 0 -47 48 34 11 17 55.3 12 99 51 -47 49 6 -47 48 2 -48 4 6 -47 33 5 0.67 - 19 0 0 -48 1 14 11 17 55.9 13 98 51 -48 1 46 -48 0 42 -48 16 44 -47 45 47 0.68 - 18 0 0 -48 13 39 11 17 56.6 13 98 52 -48 14 11 -48 13 7 -48 29 8 -47 58 13 0.68 - 17 0 0 -48 25 49 11 17 57.2 14 97 52 -48 26 21 -48 25 16 -48 41 16 -48 10 24 0.68 - 16 0 0 -48 37 43 11 17 58.0 15 96 52 -48 38 15 -48 37 11 -48 53 9 -48 22 20 0.68 - 15 0 0 -48 49 22 11 17 58.7 16 95 52 -48 49 54 -48 48 50 -49 4 47 -48 34 0 0.68 - 14 0 0 -49 0 45 11 17 59.5 16 94 53 -49 1 18 -49 0 13 -49 16 9 -48 45 25 0.68 - 13 0 0 -49 11 54 11 18 0.3 17 94 53 -49 12 26 -49 11 22 -49 27 16 -48 56 35 0.68 - 12 0 0 -49 22 47 11 18 1.2 18 93 53 -49 23 19 -49 22 15 -49 38 7 -49 7 29 0.68 - 11 0 0 -49 33 24 11 18 2.0 18 92 53 -49 33 56 -49 32 52 -49 48 43 -49 18 8 0.68 - 10 0 0 -49 43 46 11 18 2.9 19 91 53 -49 44 18 -49 43 14 -49 59 4 -49 28 31 0.68 - 9 0 0 -49 53 52 11 18 3.8 19 90 54 -49 54 24 -49 53 20 -50 9 9 -49 38 39 0.68 - 8 0 0 -50 3 43 11 18 4.8 20 90 54 -50 4 15 -50 3 11 -50 18 58 -49 48 31 0.68 - 7 0 0 -50 13 19 11 18 5.7 21 89 54 -50 13 51 -50 12 47 -50 28 33 -49 58 8 0.68 - 6 0 0 -50 22 39 11 18 6.7 21 88 54 -50 23 11 -50 22 7 -50 37 51 -50 7 29 0.68 - 5 0 0 -50 31 43 11 18 7.7 22 87 54 -50 32 15 -50 31 12 -50 46 55 -50 16 35 0.68 - 4 0 0 -50 40 32 11 18 8.8 23 86 54 -50 41 4 -50 40 1 -50 55 43 -50 25 25 0.68 - 3 0 0 -50 49 6 11 18 9.8 23 85 54 -50 49 38 -50 48 35 -51 4 15 -50 34 0 0.68 - 2 0 0 -50 57 24 11 18 10.9 24 84 54 -50 57 56 -50 56 53 -51 12 32 -50 42 19 0.68 - 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33 -52 36 59 -52 7 13 0.68 12 0 0 -52 26 48 11 18 28.2 32 72 53 -52 27 20 -52 26 17 -52 41 42 -52 11 58 0.68 13 0 0 -52 31 17 11 18 29.6 33 71 53 -52 31 49 -52 30 46 -52 46 10 -52 16 27 0.68 14 0 0 -52 35 31 11 18 31.0 33 70 53 -52 36 2 -52 35 0 -52 50 23 -52 20 42 0.68 15 0 0 -52 39 30 11 18 32.4 34 69 52 -52 40 1 -52 38 59 -52 54 22 -52 24 41 0.68 16 0 0 -52 43 14 11 18 33.8 34 68 52 -52 43 45 -52 42 43 -52 58 5 -52 28 26 0.68 17 0 0 -52 46 43 11 18 35.2 35 67 52 -52 47 14 -52 46 12 -53 1 33 -52 31 55 0.68 18 0 0 -52 49 57 11 18 36.7 35 66 52 -52 50 28 -52 49 26 -53 4 46 -52 35 10 0.68 19 0 0 -52 52 55 11 18 38.2 36 65 51 -52 53 26 -52 52 24 -53 7 44 -52 38 9 0.68 20 0 0 -52 55 39 11 18 39.7 36 64 51 -52 56 10 -52 55 8 -53 10 28 -52 40 53 0.68 21 0 0 -52 58 8 11 18 41.2 37 63 51 -52 58 39 -52 57 37 -53 12 56 -52 43 22 0.68 22 0 0 -53 0 22 11 18 42.7 38 62 51 -53 0 53 -52 59 51 -53 15 10 -52 45 37 0.68 23 0 0 -53 2 21 11 18 44.3 38 61 50 -53 2 52 -53 1 50 -53 17 8 -52 47 36 0.68 24 0 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-27 25 3 -26 53 26 0.71 148 0 0 -26 49 31 11 23 5.9 15 260 -34 -26 50 4 -26 48 58 -27 5 19 -26 33 45 0.72 149 0 0 -26 29 58 11 23 6.9 14 260 -35 -26 30 31 -26 29 25 -26 45 46 -26 14 14 0.72 150 0 0 -26 10 36 11 23 7.8 13 259 -36 -26 11 9 -26 10 3 -26 26 22 -25 54 53 0.72 151 0 0 -25 51 24 11 23 8.7 12 259 -37 -25 51 57 -25 50 51 -26 7 9 -25 35 42 0.72 152 0 0 -25 32 23 11 23 9.4 11 258 -38 -25 32 56 -25 31 50 -25 48 7 -25 16 43 0.73 153 0 0 -25 13 34 11 23 10.2 10 258 -39 -25 14 7 -25 13 1 -25 29 16 -24 57 55 0.73 154 0 0 -24 54 57 11 23 10.8 9 258 -39 -24 55 30 -24 54 24 -25 10 38 -24 39 19 0.74 155 0 0 -24 36 32 11 23 11.4 8 257 -40 -24 37 5 -24 35 59 -24 52 12 -24 20 56 0.74 156 0 0 -24 18 20 11 23 11.9 7 257 -41 -24 18 53 -24 17 48 -24 33 58 -24 2 45 0.75 157 0 0 -24 0 22 11 23 12.4 6 256 -42 -24 0 54 -23 59 49 -24 15 58 -23 44 48 0.76 158 0 0 -23 42 37 11 23 12.8 5 256 -43 -23 43 9 -23 42 4 -23 58 12 -23 27 4 0.77 159 0 0 -23 25 6 11 23 13.1 4 255 -43 -23 25 39 -23 24 34 -23 40 40 -23 9 35 0.80 160 0 0 -23 7 50 11 23 13.3 3 255 -44 -23 8 22 -23 7 18 -23 23 23 -22 52 20 0.83 161 0 0 -22 50 49 11 23 13.5 2 255 -45 -22 51 21 -22 50 16 -23 6 20 -22 35 20 0.89 162 0 0 -22 34 3 11 23 13.7 1 254 -46 -22 34 35 -22 33 31 -22 49 33 -22 18 36 1.05 163 0 0 -22 17 33 11 23 13.7 0 254 -46 -22 18 5 -22 17 1 -22 33 2 -22 2 7 2.29 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 375-145444 * constellation : Scutum * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 46 48.9417 DE: -15 02 11.851 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 46 48.9415 DE: -15 02 11.851 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.2 * B mag [mag]: 12.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (175114) 2004 QQ asteroid class: approx. diameter [km]: 2 approx. diameter ["]: 0.004 distance from Earth [AU]: 0.60610 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): 0.136", 0.030", 61.106° remarks: * orbital elements for (175114)2004 QQ : Mean anomaly = 7.5597026436 deg Arg. of pericenter = 31.4890991303 deg Long. of node = 288.0796797246 deg Inclination = 5.7189527544 deg Eccentricity = 0.6632848566 Semimajor axis = 2.2497696317 AU Perihelion dist = 0.7575315041 AU Mag: H = 16.64, G = 0.15 Epoch of elements : MJD 60618.47258846 TDT (2024 Nov 04.4726) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1342023Mar01,0.05,2024,11,4,11.342121,0.109806,-0.550952,18.011272,3.597653,-0.002736,-0.000453,0.000001,0.000000 67.7258,-15.0103,5.76,-15.60,False UCAC4 375-145444,18.78026169,-15.0366250,12.82,12.19,11.85,0.0,0,,18.80364572,-15.0102511,5.95,5.84,0,0,0 175114,2004 QQ,18.14,1.570,0.6061,0,0,18.044,52.26,,0.2,0 0,7.4217,2024,11,4,31.4891,288.0797,5.7190,0.66328,2.24977,0.75753,16.64,5.0,0.15 14.864,0.1363,0.0297,61,0.0500,Known errors,0.95,0,-1,-1 20241104_145444,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org