IOTA/IOTA-ES occultation update for (1463) Nordenmarkia / TYC 6855-02670-1 event on 2024 Sep 12, 04:10 UT Visible from Summary ------- On 2024 Sep 12 UT, the 38.767 km diameter asteroid (1463) Nordenmarkia will occult a 11.3 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 5.26 mag to 16.55 mag (the magnitude of the asteroid) for at most 4.440 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: 98 * date and approx. time of event: 2024 Sep 12, 03:57 - 2024 Sep 12, 04:22 * geocentric midpoint of event [JD]: 2460565.67363817 * magnitude of target star: 11.30 * magnitude drop [mag]: 5.26 * estimated maximum duration [s]: 4.440 * Moon: 59 % sunlit, 2° distance * Sun: 103° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 39 * 1 sigma uncertainty interval [path widths]: +/- 0.37 * 1 sigma uncertainty interval [seconds]: +/- 4.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.002", 85°) * approx speed of asteroid's shadow [km/s]: 8.7295 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6855-02670-1 by 1463 Nordenmarkia on 2024 Sep 12 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 112 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. -31 50 32 .. .. .. .... 113 0 0 -32 2 44 3 58 3.5 1 124 54 -32 15 39 -31 49 50 -32 25 8 -31 40 21 .... 114 0 0 -32 36 48 3 58 3.9 2 123 53 -32 49 39 -32 23 57 -32 59 7 -32 14 30 0.24 115 0 0 -33 10 13 3 58 4.5 3 123 53 -33 23 2 -32 57 25 -33 32 27 -32 48 1 0.23 116 0 0 -33 43 0 3 58 5.2 4 122 52 -33 55 46 -33 30 15 -34 5 9 -33 20 54 0.22 117 0 0 -34 15 8 3 58 6.3 5 122 52 -34 27 51 -34 2 27 -34 37 11 -33 53 8 0.22 118 0 0 -34 46 38 3 58 7.5 6 121 51 -34 59 16 -34 33 59 -35 8 35 -34 24 42 0.21 119 0 0 -35 17 28 3 58 8.9 7 120 51 -35 30 3 -35 4 53 -35 39 19 -34 55 38 0.21 120 0 0 -35 47 38 3 58 10.5 8 120 50 -36 0 11 -35 35 7 -36 9 24 -35 25 55 0.21 121 0 0 -36 17 10 3 58 12.3 9 119 50 -36 29 39 -36 4 42 -36 38 50 -35 55 32 0.21 122 0 0 -36 46 2 3 58 14.3 10 119 49 -36 58 28 -36 33 37 -37 7 36 -36 24 30 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- 76 0 0 5 35 44 4 21 32.4 16 238 -76 5 22 33 5 48 54 5 12 51 5 58 34 0.23 - 75 0 0 6 18 8 4 21 36.7 15 238 -77 6 5 1 6 31 15 5 55 22 6 40 53 0.23 - 74 0 0 6 59 55 4 21 40.5 14 238 -77 6 46 51 7 12 58 6 37 14 7 22 33 0.23 - 73 0 0 7 41 2 4 21 44.1 12 238 -77 7 28 2 7 54 1 7 18 28 8 3 33 0.23 - 72 0 0 8 21 29 4 21 47.3 11 238 -76 8 8 33 8 34 25 7 59 2 8 43 54 0.23 - 71 0 0 9 1 16 4 21 50.1 10 239 -76 8 48 24 9 14 8 8 38 55 9 23 35 0.24 - 70 0 0 9 40 22 4 21 52.6 9 239 -76 9 27 33 9 53 10 9 18 8 10 2 35 0.24 - 69 0 0 10 18 47 4 21 54.8 8 239 -76 10 6 2 10 31 31 9 56 39 10 40 53 0.24 - 68 0 0 10 56 29 4 21 56.7 6 239 -75 10 43 48 11 9 10 10 34 28 11 18 29 0.25 - 67 0 0 11 33 29 4 21 58.2 5 239 -74 11 20 52 11 46 7 11 11 34 11 55 23 0.26 - 66 0 0 12 9 47 4 21 59.4 4 240 -74 11 57 13 12 22 20 11 47 58 12 31 34 0.27 - 65 0 0 12 45 22 4 22 0.3 3 240 -73 12 32 51 12 57 52 12 23 40 13 7 2 0.30 - 64 0 0 13 20 14 4 22 0.9 2 240 -73 13 7 47 13 32 40 12 58 38 13 41 48 0.35 - 63 0 0 13 54 22 4 22 1.3 1 240 -72 13 41 59 14 6 45 13 32 52 14 15 50 0.56 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6855-02670-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 09 35.5195 DE: -28 39 54.627 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 09 35.5194 DE: -28 39 54.627 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.3 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1463) Nordenmarkia asteroid class: approx. diameter [km]: 39 approx. diameter ["]: 0.018 distance from Earth [AU]: 2.99680 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): 0.018", 0.002", 84.978° remarks: * orbital elements for (1463)Nordenmarkia : Mean anomaly = 260.3742464874 deg Arg. of pericenter = 80.1582267810 deg Long. of node = 329.0881282632 deg Inclination = 7.2589592710 deg Eccentricity = 0.1947101904 Semimajor axis = 3.1505293004 AU Perihelion dist = 2.5370891404 AU Mag: H = 10.63, G = 0.15 Epoch of elements : MJD 60565.17363771 TDT (2024 Sep 12.1736) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,4.44,2024,9,12,4.167316,0.077657,-0.156832,4.416854,2.183671,0.005648,0.000225,0.000000,0.000000 -141.3828,-28.6621,116.55,4.00,False TYC 6855-02670-1,18.15986656,-28.6651743,11.66,11.30,11.11,0.0,0,,18.18601882,-28.6620661,5.26,5.00,0,0,0 1463,Nordenmarkia,16.55,38.767,2.9968,0,0,0.986,6.41,,2.4,0 0,260.3436,2024,9,12,80.1582,329.0881,7.2590,0.19471,3.15053,2.53709,10.63,5.0,0.15 1.368,0.0177,0.0015,85,0.0066,Known errors,0.48,0,-1,-1 20240912_2670-1,60140.56 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org