IOTA/IOTA-ES occultation update for (1463) Nordenmarkia / TYC 7408-00599-1 event on 2024 Jun 20, 15:56 UT Visible from Summary ------- On 2024 Jun 20 UT, the 38.73 km diameter asteroid (1463) Nordenmarkia will occult a 11.8 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.89 mag to 15.68 mag (the magnitude of the asteroid) for at most 2.790 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 Jun 20, 15:49 - 2024 Jun 20, 16:03 * geocentric midpoint of event [JD]: 2460482.16409154 * magnitude of target star: 11.82 * magnitude drop [mag]: 3.89 * estimated maximum duration [s]: 2.790 * Moon: 98 % sunlit, 27° distance * Sun: 167° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 42 * 1 sigma uncertainty interval [path widths]: +/- 0.16 * 1 sigma uncertainty interval [seconds]: +/- 3.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.002", 81°) * approx speed of asteroid's shadow [km/s]: 13.8651 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7408-00599-1 by 1463 Nordenmarkia on 2024 Jun 20 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 28 0 0 -22 14 13 16 3 21.6 0 124 -7 -22 0 37 -22 27 51 -21 56 12 -22 32 17 .... 29 0 0 -22 51 38 16 3 21.5 1 123 -8 -22 38 1 -23 5 17 -22 33 37 -23 9 43 0.38 30 0 0 -23 28 58 16 3 21.1 2 123 -9 -23 15 21 -23 42 37 -23 10 56 -23 47 3 0.39 31 0 0 -24 6 12 16 3 20.6 4 123 -10 -23 52 34 -24 19 51 -23 48 9 -24 24 17 0.39 32 0 0 -24 43 17 16 3 19.9 5 122 -12 -24 29 39 -24 56 57 -24 25 14 -25 1 23 0.39 33 0 0 -25 20 13 16 3 19.0 6 122 -13 -25 6 35 -25 33 53 -25 2 10 -25 38 20 0.40 34 0 0 -25 57 0 16 3 18.0 7 121 -14 -25 43 21 -26 10 39 -25 38 56 -26 15 6 0.40 35 0 0 -26 33 34 16 3 16.8 8 121 -15 -26 19 56 -26 47 14 -26 15 31 -26 51 41 0.40 36 0 0 -27 9 57 16 3 15.4 9 120 -16 -26 56 19 -27 23 36 -26 51 53 -27 28 3 0.40 37 0 0 -27 46 6 16 3 13.8 10 120 -17 -27 32 28 -27 59 45 -27 28 3 -28 4 11 0.40 38 0 0 -28 22 0 16 3 12.1 11 119 -18 -28 8 22 -28 35 39 -28 3 57 -28 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0.42 -139 0 0 -25 52 54 15 49 33.7 16 243 -3 -25 39 17 -26 6 32 -25 34 52 -26 10 58 0.43 -138 0 0 -25 16 21 15 49 31.1 15 242 -2 -25 2 44 -25 29 59 -24 58 19 -25 34 25 0.43 -137 0 0 -24 39 38 15 49 28.7 14 242 -1 -24 26 1 -24 53 16 -24 21 36 -24 57 42 0.43 -136 0 0 -24 2 46 15 49 26.5 13 242 0 -23 49 10 -24 16 24 -23 44 45 -24 20 50 0.43 -135 0 0 -23 25 47 15 49 24.4 12 241 1 -23 12 11 -23 39 24 -23 7 46 -23 43 50 0.43 -134 0 0 -22 48 41 15 49 22.5 11 241 2 -22 35 6 -23 2 18 -22 30 42 -23 6 44 0.44 -133 0 0 -22 11 31 15 49 20.7 10 240 3 -21 57 56 -22 25 7 -21 53 32 -22 29 32 0.44 -132 0 0 -21 34 16 15 49 19.1 9 240 4 -21 20 42 -21 47 52 -21 16 18 -21 52 17 0.45 -131 0 0 -20 56 59 15 49 17.7 8 240 5 -20 43 26 -21 10 34 -20 39 2 -21 14 59 0.45 -130 0 0 -20 19 41 15 49 16.5 6 239 6 -20 6 8 -20 33 14 -20 1 45 -20 37 39 0.46 -129 0 0 -19 42 22 15 49 15.5 5 239 8 -19 28 51 -19 55 55 -19 24 28 -20 0 19 0.48 -128 0 0 -19 5 4 15 49 14.7 4 239 9 -18 51 34 -19 18 36 -18 47 11 -19 23 0 0.50 -127 0 0 -18 27 49 15 49 14.0 3 238 10 -18 14 20 -18 41 19 -18 9 58 -18 45 43 0.53 -126 0 0 -17 50 37 15 49 13.6 2 238 11 -17 37 10 -18 4 7 -17 32 48 -18 8 30 0.61 -125 0 0 -17 13 31 15 49 13.3 1 238 12 -17 0 5 -17 26 59 -16 55 43 -17 31 21 0.89 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: TYC 7408-00599-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 46 28.9603 DE: -31 05 12.494 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 46 28.9603 DE: -31 05 12.494 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1463) Nordenmarkia asteroid class: approx. diameter [km]: 39 approx. diameter ["]: 0.021 distance from Earth [AU]: 2.49340 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.023", 0.002", 80.6° remarks: * orbital elements for (1463)Nordenmarkia : Mean anomaly = 245.6837994817 deg Arg. of pericenter = 80.1315883359 deg Long. of node = 329.0912793020 deg Inclination = 7.2585819992 deg Eccentricity = 0.1946999502 Semimajor axis = 3.1507659177 AU Perihelion dist = 2.5373119505 AU Mag: H = 10.63, G = 0.15 Epoch of elements : MJD 60481.66409200 TDT (2024 Jun 20.6641) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,2.79,2024,6,20,15.938197,0.021306,-0.385440,-7.813898,-0.431991,-0.001090,0.000693,0.000001,0.000000 133.5951,-31.0606,-58.63,23.44,False TYC 7408-00599-1,18.77471120,-31.0868039,11.95,11.82,11.75,0.0,0,,18.80133523,-31.0606281,3.89,3.53,0,0,0 1463,Nordenmarkia,15.68,38.730,2.4934,0,0,-2.144,-1.52,,2.4,0 0,245.5668,2024,6,20,80.1316,329.0913,7.2586,0.19470,3.15077,2.53731,10.63,5.0,0.15 1.162,0.0230,0.0024,81,0.0035,Known errors,0.87,0,-1,-1 20240620_0599-1,60139.39 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:26 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org