IOTA/IOTA-ES occultation update for (2466) Golson / UCAC4 529-037300 event on 2024 Dec 17, 07:29 UT Visible from Summary ------- On 2024 Dec 17 UT, the 23.2675929539429 km diameter asteroid (2466) Golson will occult a 11.6 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 4.63 mag to 16.17 mag (the magnitude of the asteroid) for at most 2.130 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 Dec 17, 07:20 - 2024 Dec 17, 07:39 * geocentric midpoint of event [JD]: 2460661.81225266 * magnitude of target star: 11.56 * magnitude drop [mag]: 4.63 * estimated maximum duration [s]: 2.130 * Moon: 95 % sunlit, 12° distance * Sun: 158° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 24 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 1.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.002", 93°) * approx speed of asteroid's shadow [km/s]: 11.0593 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 529-037300 by 2466 Golson on 2024 Dec 17 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 178 0 0 - 5 17 49 7 39 2.8 1 74 -19 - 5 11 2 - 5 24 37 - 5 9 38 - 5 26 1 .... 179 0 0 - 5 1 9 7 39 2.6 2 74 -20 - 4 54 22 - 5 7 56 - 4 52 58 - 5 9 20 0.11 -180 0 0 - 4 44 37 7 39 2.1 3 74 -21 - 4 37 51 - 4 51 24 - 4 36 27 - 4 52 48 0.15 -179 0 0 - 4 28 16 7 39 1.5 4 74 -22 - 4 21 29 - 4 35 2 - 4 20 5 - 4 36 26 0.17 -178 0 0 - 4 12 4 7 39 0.7 5 74 -23 - 4 5 18 - 4 18 50 - 4 3 54 - 4 20 14 0.18 -177 0 0 - 3 56 2 7 38 59.6 6 74 -24 - 3 49 16 - 4 2 48 - 3 47 52 - 4 4 12 0.19 -176 0 0 - 3 40 10 7 38 58.4 7 74 -25 - 3 33 25 - 3 46 56 - 3 32 1 - 3 48 20 0.19 -175 0 0 - 3 24 30 7 38 57.1 8 74 -26 - 3 17 45 - 3 31 15 - 3 16 21 - 3 32 39 0.20 -174 0 0 - 3 9 0 7 38 55.5 9 74 -27 - 3 2 16 - 3 15 45 - 3 0 52 - 3 17 9 0.20 -173 0 0 - 2 53 42 7 38 53.7 10 74 -28 - 2 46 58 - 3 0 27 - 2 45 34 - 3 1 51 0.20 -172 0 0 - 2 38 36 7 38 51.8 11 74 -29 - 2 31 52 - 2 45 20 - 2 30 28 - 2 46 44 0.20 -171 0 0 - 2 23 41 7 38 49.7 12 73 -30 - 2 16 57 - 2 30 25 - 2 15 34 - 2 31 49 0.20 -170 0 0 - 2 8 58 7 38 47.4 13 73 -31 - 2 2 15 - 2 15 42 - 2 0 52 - 2 17 6 0.21 -169 0 0 - 1 54 28 7 38 44.9 14 73 -32 - 1 47 45 - 2 1 11 - 1 46 22 - 2 2 35 0.21 -168 0 0 - 1 40 10 7 38 42.2 15 73 -33 - 1 33 28 - 1 46 53 - 1 32 4 - 1 48 17 0.21 -167 0 0 - 1 26 6 7 38 39.4 16 73 -34 - 1 19 23 - 1 32 48 - 1 18 0 - 1 34 11 0.21 -166 0 0 - 1 12 14 7 38 36.4 17 73 -35 - 1 5 32 - 1 18 56 - 1 4 8 - 1 20 19 0.21 -165 0 0 - 0 58 35 7 38 33.2 18 73 -36 - 0 51 53 - 1 5 17 - 0 50 30 - 1 6 40 0.21 -164 0 0 - 0 45 10 7 38 29.9 19 73 -37 - 0 38 29 - 0 51 51 - 0 37 5 - 0 53 15 0.21 -163 0 0 - 0 31 58 7 38 26.4 20 73 -38 - 0 25 17 - 0 38 40 - 0 23 54 - 0 40 3 0.21 -162 0 0 - 0 19 1 7 38 22.7 21 73 -39 - 0 12 20 - 0 25 42 - 0 10 57 - 0 27 5 0.21 -161 0 0 - 0 6 17 7 38 18.9 22 73 -40 0 0 23 - 0 12 58 0 1 46 - 0 14 21 0.21 -160 0 0 0 6 12 7 38 14.9 23 73 -41 0 12 52 - 0 0 28 0 14 15 - 0 1 51 0.21 -159 0 0 0 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- 27 0 0 -10 59 54 7 20 58.9 22 292 -1 -10 53 4 -11 6 44 -10 51 39 -11 8 9 0.22 - 26 0 0 -11 17 50 7 20 55.0 21 292 0 -11 11 0 -11 24 40 -11 9 35 -11 26 5 0.22 - 25 0 0 -11 35 47 7 20 51.3 20 292 1 -11 28 57 -11 42 37 -11 27 32 -11 44 2 0.22 - 24 0 0 -11 53 44 7 20 47.8 19 291 2 -11 46 54 -12 0 34 -11 45 30 -12 1 59 0.22 - 23 0 0 -12 11 42 7 20 44.4 18 291 3 -12 4 52 -12 18 32 -12 3 27 -12 19 57 0.22 - 22 0 0 -12 29 40 7 20 41.2 17 291 4 -12 22 50 -12 36 30 -12 21 25 -12 37 55 0.22 - 21 0 0 -12 47 38 7 20 38.2 16 291 5 -12 40 48 -12 54 28 -12 39 23 -12 55 53 0.22 - 20 0 0 -13 5 35 7 20 35.4 15 290 6 -12 58 45 -13 12 25 -12 57 20 -13 13 50 0.22 - 19 0 0 -13 23 30 7 20 32.8 14 290 7 -13 16 40 -13 30 20 -13 15 15 -13 31 45 0.22 - 18 0 0 -13 41 24 7 20 30.3 13 290 8 -13 34 35 -13 48 15 -13 33 10 -13 49 40 0.22 - 17 0 0 -13 59 17 7 20 28.0 12 290 9 -13 52 27 -14 6 7 -13 51 2 -14 7 32 0.22 - 16 0 0 -14 17 7 7 20 25.9 11 289 10 -14 10 17 -14 23 57 -14 8 52 -14 25 22 0.22 - 15 0 0 -14 34 54 7 20 24.0 10 289 11 -14 28 4 -14 41 44 -14 26 39 -14 43 9 0.22 - 14 0 0 -14 52 38 7 20 22.2 9 289 12 -14 45 49 -14 59 28 -14 44 24 -15 0 53 0.22 - 13 0 0 -15 10 19 7 20 20.6 8 289 13 -15 3 30 -15 17 9 -15 2 5 -15 18 34 0.22 - 12 0 0 -15 27 56 7 20 19.2 7 288 14 -15 21 7 -15 34 46 -15 19 42 -15 36 11 0.22 - 11 0 0 -15 45 29 7 20 18.0 6 288 15 -15 38 40 -15 52 19 -15 37 15 -15 53 44 0.22 - 10 0 0 -16 2 58 7 20 17.0 5 288 16 -15 56 8 -16 9 47 -15 54 44 -16 11 12 0.22 - 9 0 0 -16 20 21 7 20 16.1 4 288 17 -16 13 32 -16 27 11 -16 12 7 -16 28 36 0.22 - 8 0 0 -16 37 40 7 20 15.5 3 287 18 -16 30 51 -16 44 29 -16 29 26 -16 45 54 0.22 - 7 0 0 -16 54 53 7 20 15.0 2 287 19 -16 48 4 -17 1 42 -16 46 39 -17 3 7 0.23 - 6 0 0 -17 12 0 7 20 14.7 1 287 20 -17 5 11 -17 18 49 -17 3 46 -17 20 13 0.23 - 5 0 0 -17 29 0 7 20 14.5 0 286 21 -17 22 12 -17 35 49 -17 20 47 -17 37 14 0.24 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 529-037300 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 05 48.0265 DE: +15 38 32.479 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 05 48.0265 DE: +15 38 32.479 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.6 * B mag [mag]: 13.0 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2466) Golson asteroid class: approx. diameter [km]: 23 approx. diameter ["]: 0.019 distance from Earth [AU]: 1.72630 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 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): 0.017", 0.002", 93.178° remarks: * orbital elements for (2466)Golson : Mean anomaly = 84.2390367817 deg Arg. of pericenter = 195.7340595652 deg Long. of node = 159.6220944755 deg Inclination = 5.0875103202 deg Eccentricity = 0.1646951732 Semimajor axis = 2.6385962122 AU Perihelion dist = 2.2040321520 AU Mag: H = 12.31, G = 0.15 Epoch of elements : MJD 60661.31225458 TDT (2024 Dec 17.3123) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552023Apr24,2.13,2024,12,17,7.494064,-0.022349,-0.205436,-6.205430,0.676221,-0.001976,0.000892,0.000001,0.000000 -92.0206,15.6045,66.65,-23.37,False UCAC4 529-037300,7.09667402,15.6423554,13.02,11.56,10.77,0.2,4,,7.12085178,15.6044645,4.62,4.96,0,0,0 2466,Golson,16.17,23.518,1.7263,0,0,-2.188,3.45,,1.2,0 0,84.1672,2024,12,17,195.7341,159.6221,5.0875,0.16470,2.63860,2.20403,12.30,5.0,0.15 1.104,0.0167,0.0017,93,0.0019,Known errors,1.02,0,-1,-1 20241217_037300,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org