IOTA/IOTA-ES occultation update for (3089) Oujianquan / UCAC4 317-109601 event on 2024 Oct 06, 22:35 UT Visible from Summary ------- On 2024 Oct 06 UT, the 35.5637396733124 km diameter asteroid (3089) Oujianquan will occult a 11.9 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 4.52 mag to 16.42 mag (the magnitude of the asteroid) for at most 1.130 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 Oct 06, 22:31 - 2024 Oct 06, 22:38 * geocentric midpoint of event [JD]: 2460590.44104120 * magnitude of target star: 11.92 * magnitude drop [mag]: 4.52 * estimated maximum duration [s]: 1.130 * Moon: 14 % sunlit, 21° distance * Sun: 66° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 39 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.005", 113°) * approx speed of asteroid's shadow [km/s]: 31.6939 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 317-109601 by 3089 Oujianquan on 2024 Oct 6 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 -167 0 0 30 42 39 22 32 0.1 1 122 53 30 30 22 30 54 57 30 22 32 31 2 49 .... -166 0 0 30 10 21 22 32 0.2 2 123 54 29 58 3 30 22 40 29 50 13 30 30 32 -0.19 -165 0 0 29 37 45 22 32 0.4 3 123 55 29 25 27 29 50 5 29 17 36 29 57 58 -0.26 -164 0 0 29 4 54 22 32 0.6 4 124 55 28 52 35 29 17 14 28 44 44 29 25 7 -0.30 -163 0 0 28 31 46 22 32 0.9 5 124 56 28 19 26 28 44 7 28 11 35 28 52 0 -0.32 -162 0 0 27 58 23 22 32 1.2 6 125 57 27 46 3 28 10 45 27 38 12 28 18 38 -0.34 -161 0 0 27 24 47 22 32 1.7 7 125 57 27 12 27 27 37 8 27 4 35 27 45 2 -0.35 -160 0 0 26 50 57 22 32 2.2 8 125 58 26 38 37 27 3 19 26 30 45 27 11 13 -0.35 -159 0 0 26 16 56 22 32 2.8 9 126 58 26 4 35 26 29 18 25 56 43 26 37 12 -0.36 -158 0 0 25 42 43 22 32 3.5 10 126 59 25 30 22 25 55 5 25 22 30 26 2 59 -0.36 -157 0 0 25 8 20 22 32 4.2 11 127 59 24 55 59 25 20 42 24 48 7 25 28 37 -0.37 -156 0 0 24 33 48 22 32 5.0 12 127 60 24 21 28 24 46 10 24 13 35 24 54 5 -0.37 -155 0 0 23 59 9 22 32 5.9 13 128 60 23 46 48 24 11 30 23 38 56 24 19 25 -0.37 -154 0 0 23 24 22 22 32 6.9 14 128 60 23 12 2 23 36 44 23 4 10 23 44 38 -0.38 -153 0 0 22 49 30 22 32 8.0 16 129 61 22 37 10 23 1 51 22 29 18 23 9 45 -0.38 -152 0 0 22 14 33 22 32 9.1 17 129 61 22 2 13 22 26 53 21 54 22 22 34 47 -0.38 -151 0 0 21 39 32 22 32 10.4 18 129 61 21 27 13 21 51 52 21 19 22 21 59 45 -0.38 -150 0 0 21 4 29 22 32 11.7 19 130 61 20 52 11 21 16 49 20 44 20 21 24 42 -0.38 -149 0 0 20 29 25 22 32 13.1 20 130 61 20 17 7 20 41 44 20 9 17 20 49 36 -0.38 -148 0 0 19 54 21 22 32 14.5 21 131 62 19 42 4 20 6 39 19 34 14 20 14 31 -0.39 -147 0 0 19 19 17 22 32 16.1 22 131 62 19 7 1 19 31 35 18 59 12 19 39 26 -0.39 -146 0 0 18 44 17 22 32 17.7 23 131 62 18 32 1 18 56 33 18 24 13 19 4 24 -0.39 -145 0 0 18 9 19 22 32 19.4 24 132 61 17 57 5 18 21 34 17 49 17 18 29 24 -0.39 -144 0 0 17 34 26 22 32 21.2 25 132 61 17 22 13 17 46 40 17 14 26 17 54 30 -0.39 -143 0 0 16 59 39 22 32 23.1 26 133 61 16 47 27 17 11 52 16 39 40 17 19 40 -0.39 -142 0 0 16 24 58 22 32 25.0 28 133 61 16 12 48 16 37 10 16 5 2 16 44 58 -0.39 -141 0 0 15 50 26 22 32 27.0 29 133 61 15 38 17 16 2 37 15 30 32 16 10 24 -0.39 -140 0 0 15 16 3 22 32 29.1 30 134 60 15 3 55 15 28 12 14 56 11 15 35 58 -0.39 -139 0 0 14 41 50 22 32 31.3 31 134 60 14 29 43 14 53 57 14 22 0 15 1 43 -0.39 -138 0 0 14 7 48 22 32 33.5 32 135 60 13 55 43 14 19 54 13 48 1 14 27 38 -0.39 -137 0 0 13 33 59 22 32 35.8 33 135 59 13 21 55 13 46 3 13 14 14 13 53 47 -0.39 -136 0 0 13 0 23 22 32 38.2 34 136 59 12 48 21 13 12 26 12 40 41 13 20 8 -0.40 -135 0 0 12 27 1 22 32 40.6 35 136 58 12 15 1 12 39 3 12 7 22 12 46 44 -0.40 -134 0 0 11 53 56 22 32 43.1 36 136 58 11 41 57 12 5 55 11 34 19 12 13 35 -0.40 -133 0 0 11 21 6 22 32 45.7 37 137 57 11 9 9 11 33 4 11 1 32 11 40 43 -0.40 -132 0 0 10 48 34 22 32 48.3 38 137 57 10 36 39 11 0 31 10 29 4 11 8 8 -0.40 -131 0 0 10 16 21 22 32 51.0 40 138 56 10 4 28 10 28 15 9 56 53 10 35 52 -0.40 -130 0 0 9 44 27 22 32 53.8 41 138 55 9 32 35 9 56 19 9 25 2 10 3 55 -0.40 -129 0 0 9 12 53 22 32 56.6 42 139 55 9 1 3 9 24 43 8 53 31 9 32 17 -0.40 -128 0 0 8 41 40 22 32 59.4 43 139 54 8 29 52 8 53 28 8 22 21 9 1 1 -0.40 -127 0 0 8 10 49 22 33 2.4 44 140 53 7 59 3 8 22 35 7 51 33 8 30 7 -0.40 -126 0 0 7 40 20 22 33 5.3 45 141 52 7 28 36 7 52 5 7 21 8 7 59 35 -0.40 -125 0 0 7 10 15 22 33 8.4 46 141 52 6 58 33 7 21 58 6 51 6 7 29 27 -0.40 -124 0 0 6 40 34 22 33 11.4 47 142 51 6 28 54 6 52 15 6 21 28 6 59 43 -0.40 -123 0 0 6 11 18 22 33 14.5 48 142 50 5 59 40 6 22 57 5 52 16 6 30 23 -0.40 -122 0 0 5 42 28 22 33 17.7 49 143 49 5 30 52 5 54 4 5 23 29 6 1 30 -0.40 -121 0 0 5 14 3 22 33 20.9 50 144 48 5 2 30 5 25 38 4 55 8 5 33 2 -0.40 -120 0 0 4 46 6 22 33 24.1 51 145 47 4 34 34 4 57 38 4 27 13 5 5 1 -0.40 -119 0 0 4 18 36 22 33 27.4 52 145 47 4 7 6 4 30 6 3 59 46 4 37 27 -0.40 -118 0 0 3 51 33 22 33 30.7 53 146 46 3 40 6 4 3 2 3 32 47 4 10 22 -0.40 -117 0 0 3 24 59 22 33 34.1 54 147 45 3 13 34 3 36 26 3 6 17 3 43 45 -0.40 -116 0 0 2 58 54 22 33 37.5 54 148 44 2 47 31 3 10 19 2 40 15 3 17 36 -0.40 -115 0 0 2 33 19 22 33 40.9 55 149 43 2 21 57 2 44 41 2 14 43 2 51 57 -0.40 -114 0 0 2 8 13 22 33 44.3 56 150 42 1 56 54 2 19 34 1 49 41 2 26 48 -0.41 -113 0 0 1 43 38 22 33 47.8 57 151 41 1 32 20 1 54 56 1 25 8 2 2 10 -0.41 -112 0 0 1 19 33 22 33 51.3 58 152 40 1 8 17 1 30 49 1 1 7 1 38 2 -0.41 -111 0 0 0 55 59 22 33 54.8 59 153 39 0 44 45 1 7 14 0 37 36 1 14 25 -0.41 -110 0 0 0 32 56 22 33 58.3 59 155 38 0 21 45 0 44 9 0 14 37 0 51 19 -0.41 -109 0 0 0 10 26 22 34 1.9 60 156 37 - 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6 59 36 - 6 38 34 - 7 6 18 - 6 31 50 -0.41 - 60 0 0 - 6 43 50 22 36 50.9 50 236 -11 - 6 54 21 - 6 33 18 - 7 1 4 - 6 26 35 -0.41 - 59 0 0 - 6 38 1 22 36 53.8 49 236 -12 - 6 48 33 - 6 27 29 - 6 55 16 - 6 20 45 -0.41 - 58 0 0 - 6 31 38 22 36 56.7 48 237 -13 - 6 42 11 - 6 21 5 - 6 48 54 - 6 14 21 -0.41 - 57 0 0 - 6 24 41 22 36 59.5 47 237 -14 - 6 35 14 - 6 14 7 - 6 41 58 - 6 7 23 -0.41 - 56 0 0 - 6 17 10 22 37 2.3 46 237 -15 - 6 27 44 - 6 6 35 - 6 34 28 - 5 59 50 -0.41 - 55 0 0 - 6 9 5 22 37 5.1 45 238 -17 - 6 19 39 - 5 58 29 - 6 26 23 - 5 51 43 -0.41 - 54 0 0 - 6 0 25 22 37 7.8 44 238 -18 - 6 11 0 - 5 49 49 - 6 17 45 - 5 43 3 -0.41 - 53 0 0 - 5 51 12 22 37 10.5 43 238 -19 - 6 1 48 - 5 40 35 - 6 8 33 - 5 33 48 -0.41 - 52 0 0 - 5 41 24 22 37 13.1 43 238 -20 - 5 52 1 - 5 30 46 - 5 58 47 - 5 23 59 -0.41 - 51 0 0 - 5 31 3 22 37 15.7 42 239 -21 - 5 41 41 - 5 20 24 - 5 48 27 - 5 13 36 -0.41 - 50 0 0 - 5 20 7 22 37 18.2 41 239 -22 - 5 30 46 - 5 9 27 - 5 37 34 - 5 2 39 -0.41 - 49 0 0 - 5 8 38 22 37 20.7 40 239 -23 - 5 19 18 - 4 57 57 - 5 26 6 - 4 51 7 -0.41 - 48 0 0 - 4 56 35 22 37 23.2 39 239 -24 - 5 7 16 - 4 45 53 - 5 14 5 - 4 39 2 -0.41 - 47 0 0 - 4 43 58 22 37 25.6 38 239 -25 - 4 54 40 - 4 33 15 - 5 1 30 - 4 26 24 -0.41 - 46 0 0 - 4 30 47 22 37 28.0 37 240 -26 - 4 41 31 - 4 20 3 - 4 48 21 - 4 13 11 -0.41 - 45 0 0 - 4 17 3 22 37 30.3 36 240 -27 - 4 27 48 - 4 6 17 - 4 34 39 - 3 59 24 -0.41 - 44 0 0 - 4 2 45 22 37 32.6 35 240 -28 - 4 13 31 - 3 51 58 - 4 20 23 - 3 45 4 -0.41 - 43 0 0 - 3 47 53 22 37 34.8 34 240 -29 - 3 58 41 - 3 37 5 - 4 5 34 - 3 30 11 -0.41 - 42 0 0 - 3 32 28 22 37 37.0 33 240 -30 - 3 43 17 - 3 21 39 - 3 50 11 - 3 14 43 -0.41 - 41 0 0 - 3 16 30 22 37 39.1 32 240 -31 - 3 27 21 - 3 5 39 - 3 34 15 - 2 58 43 -0.41 - 40 0 0 - 2 59 59 22 37 41.1 31 240 -32 - 3 10 51 - 2 49 6 - 3 17 46 - 2 42 9 -0.41 - 39 0 0 - 2 42 54 22 37 43.1 30 240 -33 - 2 53 48 - 2 32 0 - 3 0 44 - 2 25 2 -0.41 - 38 0 0 - 2 25 17 22 37 45.1 29 241 -34 - 2 36 12 - 2 14 21 - 2 43 10 - 2 7 22 -0.41 - 37 0 0 - 2 7 7 22 37 47.0 28 241 -35 - 2 18 3 - 1 56 9 - 2 25 2 - 1 49 9 -0.41 - 36 0 0 - 1 48 24 22 37 48.8 27 241 -36 - 1 59 22 - 1 37 25 - 2 6 22 - 1 30 24 -0.41 - 35 0 0 - 1 29 9 22 37 50.6 26 241 -37 - 1 40 9 - 1 18 8 - 1 47 9 - 1 11 6 -0.41 - 34 0 0 - 1 9 21 22 37 52.3 25 241 -38 - 1 20 23 - 0 58 19 - 1 27 24 - 0 51 15 -0.41 - 33 0 0 - 0 49 2 22 37 53.9 24 241 -39 - 1 0 5 - 0 37 57 - 1 7 8 - 0 30 53 -0.41 - 32 0 0 - 0 28 10 22 37 55.5 23 241 -40 - 0 39 15 - 0 17 4 - 0 46 19 - 0 9 59 -0.41 - 31 0 0 - 0 6 47 22 37 57.0 21 241 -41 - 0 17 54 0 4 21 - 0 24 59 0 11 27 -0.41 - 30 0 0 0 15 7 22 37 58.5 20 241 -42 0 3 58 0 26 17 - 0 3 8 0 33 24 -0.41 - 29 0 0 0 37 32 22 37 59.8 19 241 -43 0 26 22 0 48 44 0 19 14 0 55 53 -0.41 - 28 0 0 1 0 28 22 38 1.2 18 241 -44 0 49 16 1 11 42 0 42 7 1 18 52 -0.41 - 27 0 0 1 23 55 22 38 2.4 17 241 -45 1 12 41 1 35 10 1 5 31 1 42 21 -0.41 - 26 0 0 1 47 51 22 38 3.6 16 241 -46 1 36 35 1 59 8 1 29 24 2 6 21 -0.41 - 25 0 0 2 12 18 22 38 4.7 15 242 -48 2 0 59 2 23 37 1 53 47 2 30 50 -0.41 - 24 0 0 2 37 13 22 38 5.7 14 242 -49 2 25 53 2 48 34 2 18 40 2 55 49 -0.41 - 23 0 0 3 2 37 22 38 6.7 13 242 -50 2 51 15 3 14 0 2 44 1 3 21 17 -0.41 - 22 0 0 3 28 30 22 38 7.6 12 242 -51 3 17 6 3 39 55 3 9 50 3 47 13 -0.41 - 21 0 0 3 54 51 22 38 8.4 11 242 -52 3 43 25 4 6 18 3 36 8 4 13 37 -0.41 - 20 0 0 4 21 39 22 38 9.1 10 242 -53 4 10 12 4 33 8 4 2 53 4 40 28 -0.41 - 19 0 0 4 48 55 22 38 9.8 9 242 -54 4 37 25 5 0 25 4 30 5 5 7 47 -0.41 - 18 0 0 5 16 36 22 38 10.3 7 242 -55 5 5 5 5 28 9 4 57 44 5 35 32 -0.41 - 17 0 0 5 44 44 22 38 10.8 6 242 -56 5 33 10 5 56 19 5 25 48 6 3 43 -0.42 - 16 0 0 6 13 17 22 38 11.3 5 242 -57 6 1 41 6 24 54 5 54 18 6 32 19 -0.42 - 15 0 0 6 42 14 22 38 11.6 4 242 -58 6 30 37 6 53 53 6 23 12 7 1 19 -0.42 - 14 0 0 7 11 36 22 38 11.9 3 243 -59 6 59 56 7 23 16 6 52 30 7 30 44 -0.43 - 13 0 0 7 41 20 22 38 12.0 2 243 -60 7 29 39 7 53 3 7 22 12 8 0 32 -0.44 - 12 0 0 8 11 28 22 38 12.1 1 243 -61 7 59 45 8 23 12 7 52 16 8 30 42 -0.48 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 317-109601 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 13 12.9134 DE: -26 44 39.836 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 13 12.9134 DE: -26 44 39.836 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.9 * B mag [mag]: 13.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3089) Oujianquan asteroid class: approx. diameter [km]: 36 approx. diameter ["]: 0.019 distance from Earth [AU]: 2.62330 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.020", 0.005", 112.699° remarks: * orbital elements for (3089)Oujianquan : Mean anomaly = 7.0450851436 deg Arg. of pericenter = 183.9529168556 deg Long. of node = 88.1989813275 deg Inclination = 16.6941868588 deg Eccentricity = 0.1854470749 Semimajor axis = 2.9310482571 AU Perihelion dist = 2.3874939315 AU Mag: H = 11.36, G = 0.15 Epoch of elements : MJD 60589.94104112 TDT (2024 Oct 06.9410) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,1.13,2024,10,6,22.584989,0.083871,0.370814,17.443611,-3.966667,0.005081,-0.000549,-0.000001,0.000000 -96.1646,-26.7746,-161.81,-5.59,False UCAC4 317-109601,17.22025377,-26.7443990,13.32,11.92,11.16,0.1,0,,17.24568987,-26.7745628,4.52,4.82,0,0,0 3089,Oujianquan,16.42,35.754,2.6233,0,0,4.367,-13.29,,2.4,0 0,6.8603,2024,10,6,183.9529,88.1990,16.6942,0.18545,2.93105,2.38749,11.36,5.0,0.15 1.319,0.0200,0.0050,113,0.0060,Known errors,0.79,0,-1,-1 20241006_109601,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:46 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org